Part of reorganising wireless drivers directory and Kconfig.
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
M: Lennert Buytenhek <buytenh@wantstofly.org>
L: linux-wireless@vger.kernel.org
S: Odd Fixes
-F: drivers/net/wireless/mwl8k.c
+F: drivers/net/wireless/marvell/mwl8k.c
MARVELL SOC MMC/SD/SDIO CONTROLLER DRIVER
M: Nicolas Pitre <nico@fluxnic.net>
To compile this driver as a module, choose M here: the module will be
called mac80211_hwsim. If unsure, say N.
-config MWL8K
- tristate "Marvell 88W8xxx PCI/PCIe Wireless support"
- depends on MAC80211 && PCI
- ---help---
- This driver supports Marvell TOPDOG 802.11 wireless cards.
-
- To compile this driver as a module, choose M here: the module
- will be called mwl8k. If unsure, say N.
-
source "drivers/net/wireless/ath/Kconfig"
source "drivers/net/wireless/hostap/Kconfig"
source "drivers/net/wireless/orinoco/Kconfig"
obj-$(CONFIG_USB_ZD1201) += zd1201.o
-obj-$(CONFIG_MWL8K) += mwl8k.o
-
obj-$(CONFIG_RT2X00) += rt2x00/
obj-$(CONFIG_WL_MEDIATEK) += mediatek/
source "drivers/net/wireless/marvell/libertas_tf/Kconfig"
source "drivers/net/wireless/marvell/mwifiex/Kconfig"
+config MWL8K
+ tristate "Marvell 88W8xxx PCI/PCIe Wireless support"
+ depends on MAC80211 && PCI
+ ---help---
+ This driver supports Marvell TOPDOG 802.11 wireless cards.
+
+ To compile this driver as a module, choose M here: the module
+ will be called mwl8k. If unsure, say N.
+
endif # WLAN_VENDOR_MARVELL
obj-$(CONFIG_LIBERTAS_THINFIRM) += libertas_tf/
obj-$(CONFIG_MWIFIEX) += mwifiex/
+
+obj-$(CONFIG_MWL8K) += mwl8k.o
--- /dev/null
+/*
+ * drivers/net/wireless/mwl8k.c
+ * Driver for Marvell TOPDOG 802.11 Wireless cards
+ *
+ * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/completion.h>
+#include <linux/etherdevice.h>
+#include <linux/slab.h>
+#include <net/mac80211.h>
+#include <linux/moduleparam.h>
+#include <linux/firmware.h>
+#include <linux/workqueue.h>
+
+#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
+#define MWL8K_NAME KBUILD_MODNAME
+#define MWL8K_VERSION "0.13"
+
+/* Module parameters */
+static bool ap_mode_default;
+module_param(ap_mode_default, bool, 0);
+MODULE_PARM_DESC(ap_mode_default,
+ "Set to 1 to make ap mode the default instead of sta mode");
+
+/* Register definitions */
+#define MWL8K_HIU_GEN_PTR 0x00000c10
+#define MWL8K_MODE_STA 0x0000005a
+#define MWL8K_MODE_AP 0x000000a5
+#define MWL8K_HIU_INT_CODE 0x00000c14
+#define MWL8K_FWSTA_READY 0xf0f1f2f4
+#define MWL8K_FWAP_READY 0xf1f2f4a5
+#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
+#define MWL8K_HIU_SCRATCH 0x00000c40
+
+/* Host->device communications */
+#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
+#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
+#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
+#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
+#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
+#define MWL8K_H2A_INT_DUMMY (1 << 20)
+#define MWL8K_H2A_INT_RESET (1 << 15)
+#define MWL8K_H2A_INT_DOORBELL (1 << 1)
+#define MWL8K_H2A_INT_PPA_READY (1 << 0)
+
+/* Device->host communications */
+#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
+#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
+#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
+#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
+#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
+#define MWL8K_A2H_INT_DUMMY (1 << 20)
+#define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
+#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
+#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
+#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
+#define MWL8K_A2H_INT_RADIO_ON (1 << 6)
+#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
+#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
+#define MWL8K_A2H_INT_OPC_DONE (1 << 2)
+#define MWL8K_A2H_INT_RX_READY (1 << 1)
+#define MWL8K_A2H_INT_TX_DONE (1 << 0)
+
+/* HW micro second timer register
+ * located at offset 0xA600. This
+ * will be used to timestamp tx
+ * packets.
+ */
+
+#define MWL8K_HW_TIMER_REGISTER 0x0000a600
+#define BBU_RXRDY_CNT_REG 0x0000a860
+#define NOK_CCA_CNT_REG 0x0000a6a0
+#define BBU_AVG_NOISE_VAL 0x67
+
+#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
+ MWL8K_A2H_INT_CHNL_SWITCHED | \
+ MWL8K_A2H_INT_QUEUE_EMPTY | \
+ MWL8K_A2H_INT_RADAR_DETECT | \
+ MWL8K_A2H_INT_RADIO_ON | \
+ MWL8K_A2H_INT_RADIO_OFF | \
+ MWL8K_A2H_INT_MAC_EVENT | \
+ MWL8K_A2H_INT_OPC_DONE | \
+ MWL8K_A2H_INT_RX_READY | \
+ MWL8K_A2H_INT_TX_DONE | \
+ MWL8K_A2H_INT_BA_WATCHDOG)
+
+#define MWL8K_RX_QUEUES 1
+#define MWL8K_TX_WMM_QUEUES 4
+#define MWL8K_MAX_AMPDU_QUEUES 8
+#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
+#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
+
+/* txpriorities are mapped with hw queues.
+ * Each hw queue has a txpriority.
+ */
+#define TOTAL_HW_TX_QUEUES 8
+
+/* Each HW queue can have one AMPDU stream.
+ * But, because one of the hw queue is reserved,
+ * maximum AMPDU queues that can be created are
+ * one short of total tx queues.
+ */
+#define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
+
+#define MWL8K_NUM_CHANS 18
+
+struct rxd_ops {
+ int rxd_size;
+ void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
+ void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
+ int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
+ __le16 *qos, s8 *noise);
+};
+
+struct mwl8k_device_info {
+ char *part_name;
+ char *helper_image;
+ char *fw_image_sta;
+ char *fw_image_ap;
+ struct rxd_ops *ap_rxd_ops;
+ u32 fw_api_ap;
+};
+
+struct mwl8k_rx_queue {
+ int rxd_count;
+
+ /* hw receives here */
+ int head;
+
+ /* refill descs here */
+ int tail;
+
+ void *rxd;
+ dma_addr_t rxd_dma;
+ struct {
+ struct sk_buff *skb;
+ DEFINE_DMA_UNMAP_ADDR(dma);
+ } *buf;
+};
+
+struct mwl8k_tx_queue {
+ /* hw transmits here */
+ int head;
+
+ /* sw appends here */
+ int tail;
+
+ unsigned int len;
+ struct mwl8k_tx_desc *txd;
+ dma_addr_t txd_dma;
+ struct sk_buff **skb;
+};
+
+enum {
+ AMPDU_NO_STREAM,
+ AMPDU_STREAM_NEW,
+ AMPDU_STREAM_IN_PROGRESS,
+ AMPDU_STREAM_ACTIVE,
+};
+
+struct mwl8k_ampdu_stream {
+ struct ieee80211_sta *sta;
+ u8 tid;
+ u8 state;
+ u8 idx;
+};
+
+struct mwl8k_priv {
+ struct ieee80211_hw *hw;
+ struct pci_dev *pdev;
+ int irq;
+
+ struct mwl8k_device_info *device_info;
+
+ void __iomem *sram;
+ void __iomem *regs;
+
+ /* firmware */
+ const struct firmware *fw_helper;
+ const struct firmware *fw_ucode;
+
+ /* hardware/firmware parameters */
+ bool ap_fw;
+ struct rxd_ops *rxd_ops;
+ struct ieee80211_supported_band band_24;
+ struct ieee80211_channel channels_24[14];
+ struct ieee80211_rate rates_24[13];
+ struct ieee80211_supported_band band_50;
+ struct ieee80211_channel channels_50[4];
+ struct ieee80211_rate rates_50[8];
+ u32 ap_macids_supported;
+ u32 sta_macids_supported;
+
+ /* Ampdu stream information */
+ u8 num_ampdu_queues;
+ spinlock_t stream_lock;
+ struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
+ struct work_struct watchdog_ba_handle;
+
+ /* firmware access */
+ struct mutex fw_mutex;
+ struct task_struct *fw_mutex_owner;
+ struct task_struct *hw_restart_owner;
+ int fw_mutex_depth;
+ struct completion *hostcmd_wait;
+
+ atomic_t watchdog_event_pending;
+
+ /* lock held over TX and TX reap */
+ spinlock_t tx_lock;
+
+ /* TX quiesce completion, protected by fw_mutex and tx_lock */
+ struct completion *tx_wait;
+
+ /* List of interfaces. */
+ u32 macids_used;
+ struct list_head vif_list;
+
+ /* power management status cookie from firmware */
+ u32 *cookie;
+ dma_addr_t cookie_dma;
+
+ u16 num_mcaddrs;
+ u8 hw_rev;
+ u32 fw_rev;
+ u32 caps;
+
+ /*
+ * Running count of TX packets in flight, to avoid
+ * iterating over the transmit rings each time.
+ */
+ int pending_tx_pkts;
+
+ struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
+ struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
+ u32 txq_offset[MWL8K_MAX_TX_QUEUES];
+
+ bool radio_on;
+ bool radio_short_preamble;
+ bool sniffer_enabled;
+ bool wmm_enabled;
+
+ /* XXX need to convert this to handle multiple interfaces */
+ bool capture_beacon;
+ u8 capture_bssid[ETH_ALEN];
+ struct sk_buff *beacon_skb;
+
+ /*
+ * This FJ worker has to be global as it is scheduled from the
+ * RX handler. At this point we don't know which interface it
+ * belongs to until the list of bssids waiting to complete join
+ * is checked.
+ */
+ struct work_struct finalize_join_worker;
+
+ /* Tasklet to perform TX reclaim. */
+ struct tasklet_struct poll_tx_task;
+
+ /* Tasklet to perform RX. */
+ struct tasklet_struct poll_rx_task;
+
+ /* Most recently reported noise in dBm */
+ s8 noise;
+
+ /*
+ * preserve the queue configurations so they can be restored if/when
+ * the firmware image is swapped.
+ */
+ struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
+
+ /* To perform the task of reloading the firmware */
+ struct work_struct fw_reload;
+ bool hw_restart_in_progress;
+
+ /* async firmware loading state */
+ unsigned fw_state;
+ char *fw_pref;
+ char *fw_alt;
+ bool is_8764;
+ struct completion firmware_loading_complete;
+
+ /* bitmap of running BSSes */
+ u32 running_bsses;
+
+ /* ACS related */
+ bool sw_scan_start;
+ struct ieee80211_channel *acs_chan;
+ unsigned long channel_time;
+ struct survey_info survey[MWL8K_NUM_CHANS];
+};
+
+#define MAX_WEP_KEY_LEN 13
+#define NUM_WEP_KEYS 4
+
+/* Per interface specific private data */
+struct mwl8k_vif {
+ struct list_head list;
+ struct ieee80211_vif *vif;
+
+ /* Firmware macid for this vif. */
+ int macid;
+
+ /* Non AMPDU sequence number assigned by driver. */
+ u16 seqno;
+
+ /* Saved WEP keys */
+ struct {
+ u8 enabled;
+ u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
+ } wep_key_conf[NUM_WEP_KEYS];
+
+ /* BSSID */
+ u8 bssid[ETH_ALEN];
+
+ /* A flag to indicate is HW crypto is enabled for this bssid */
+ bool is_hw_crypto_enabled;
+};
+#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
+#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
+
+struct tx_traffic_info {
+ u32 start_time;
+ u32 pkts;
+};
+
+#define MWL8K_MAX_TID 8
+struct mwl8k_sta {
+ /* Index into station database. Returned by UPDATE_STADB. */
+ u8 peer_id;
+ u8 is_ampdu_allowed;
+ struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
+};
+#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
+
+static const struct ieee80211_channel mwl8k_channels_24[] = {
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
+ { .band = IEEE80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
+};
+
+static const struct ieee80211_rate mwl8k_rates_24[] = {
+ { .bitrate = 10, .hw_value = 2, },
+ { .bitrate = 20, .hw_value = 4, },
+ { .bitrate = 55, .hw_value = 11, },
+ { .bitrate = 110, .hw_value = 22, },
+ { .bitrate = 220, .hw_value = 44, },
+ { .bitrate = 60, .hw_value = 12, },
+ { .bitrate = 90, .hw_value = 18, },
+ { .bitrate = 120, .hw_value = 24, },
+ { .bitrate = 180, .hw_value = 36, },
+ { .bitrate = 240, .hw_value = 48, },
+ { .bitrate = 360, .hw_value = 72, },
+ { .bitrate = 480, .hw_value = 96, },
+ { .bitrate = 540, .hw_value = 108, },
+};
+
+static const struct ieee80211_channel mwl8k_channels_50[] = {
+ { .band = IEEE80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
+ { .band = IEEE80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
+ { .band = IEEE80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
+ { .band = IEEE80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
+};
+
+static const struct ieee80211_rate mwl8k_rates_50[] = {
+ { .bitrate = 60, .hw_value = 12, },
+ { .bitrate = 90, .hw_value = 18, },
+ { .bitrate = 120, .hw_value = 24, },
+ { .bitrate = 180, .hw_value = 36, },
+ { .bitrate = 240, .hw_value = 48, },
+ { .bitrate = 360, .hw_value = 72, },
+ { .bitrate = 480, .hw_value = 96, },
+ { .bitrate = 540, .hw_value = 108, },
+};
+
+/* Set or get info from Firmware */
+#define MWL8K_CMD_GET 0x0000
+#define MWL8K_CMD_SET 0x0001
+#define MWL8K_CMD_SET_LIST 0x0002
+
+/* Firmware command codes */
+#define MWL8K_CMD_CODE_DNLD 0x0001
+#define MWL8K_CMD_GET_HW_SPEC 0x0003
+#define MWL8K_CMD_SET_HW_SPEC 0x0004
+#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
+#define MWL8K_CMD_GET_STAT 0x0014
+#define MWL8K_CMD_BBP_REG_ACCESS 0x001a
+#define MWL8K_CMD_RADIO_CONTROL 0x001c
+#define MWL8K_CMD_RF_TX_POWER 0x001e
+#define MWL8K_CMD_TX_POWER 0x001f
+#define MWL8K_CMD_RF_ANTENNA 0x0020
+#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
+#define MWL8K_CMD_SET_PRE_SCAN 0x0107
+#define MWL8K_CMD_SET_POST_SCAN 0x0108
+#define MWL8K_CMD_SET_RF_CHANNEL 0x010a
+#define MWL8K_CMD_SET_AID 0x010d
+#define MWL8K_CMD_SET_RATE 0x0110
+#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
+#define MWL8K_CMD_RTS_THRESHOLD 0x0113
+#define MWL8K_CMD_SET_SLOT 0x0114
+#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
+#define MWL8K_CMD_SET_WMM_MODE 0x0123
+#define MWL8K_CMD_MIMO_CONFIG 0x0125
+#define MWL8K_CMD_USE_FIXED_RATE 0x0126
+#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
+#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
+#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
+#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
+#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
+#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
+#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
+#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
+#define MWL8K_CMD_UPDATE_STADB 0x1123
+#define MWL8K_CMD_BASTREAM 0x1125
+
+static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
+{
+ u16 command = le16_to_cpu(cmd);
+
+#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
+ snprintf(buf, bufsize, "%s", #x);\
+ return buf;\
+ } while (0)
+ switch (command & ~0x8000) {
+ MWL8K_CMDNAME(CODE_DNLD);
+ MWL8K_CMDNAME(GET_HW_SPEC);
+ MWL8K_CMDNAME(SET_HW_SPEC);
+ MWL8K_CMDNAME(MAC_MULTICAST_ADR);
+ MWL8K_CMDNAME(GET_STAT);
+ MWL8K_CMDNAME(RADIO_CONTROL);
+ MWL8K_CMDNAME(RF_TX_POWER);
+ MWL8K_CMDNAME(TX_POWER);
+ MWL8K_CMDNAME(RF_ANTENNA);
+ MWL8K_CMDNAME(SET_BEACON);
+ MWL8K_CMDNAME(SET_PRE_SCAN);
+ MWL8K_CMDNAME(SET_POST_SCAN);
+ MWL8K_CMDNAME(SET_RF_CHANNEL);
+ MWL8K_CMDNAME(SET_AID);
+ MWL8K_CMDNAME(SET_RATE);
+ MWL8K_CMDNAME(SET_FINALIZE_JOIN);
+ MWL8K_CMDNAME(RTS_THRESHOLD);
+ MWL8K_CMDNAME(SET_SLOT);
+ MWL8K_CMDNAME(SET_EDCA_PARAMS);
+ MWL8K_CMDNAME(SET_WMM_MODE);
+ MWL8K_CMDNAME(MIMO_CONFIG);
+ MWL8K_CMDNAME(USE_FIXED_RATE);
+ MWL8K_CMDNAME(ENABLE_SNIFFER);
+ MWL8K_CMDNAME(SET_MAC_ADDR);
+ MWL8K_CMDNAME(SET_RATEADAPT_MODE);
+ MWL8K_CMDNAME(BSS_START);
+ MWL8K_CMDNAME(SET_NEW_STN);
+ MWL8K_CMDNAME(UPDATE_ENCRYPTION);
+ MWL8K_CMDNAME(UPDATE_STADB);
+ MWL8K_CMDNAME(BASTREAM);
+ MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
+ default:
+ snprintf(buf, bufsize, "0x%x", cmd);
+ }
+#undef MWL8K_CMDNAME
+
+ return buf;
+}
+
+/* Hardware and firmware reset */
+static void mwl8k_hw_reset(struct mwl8k_priv *priv)
+{
+ iowrite32(MWL8K_H2A_INT_RESET,
+ priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
+ iowrite32(MWL8K_H2A_INT_RESET,
+ priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
+ msleep(20);
+}
+
+/* Release fw image */
+static void mwl8k_release_fw(const struct firmware **fw)
+{
+ if (*fw == NULL)
+ return;
+ release_firmware(*fw);
+ *fw = NULL;
+}
+
+static void mwl8k_release_firmware(struct mwl8k_priv *priv)
+{
+ mwl8k_release_fw(&priv->fw_ucode);
+ mwl8k_release_fw(&priv->fw_helper);
+}
+
+/* states for asynchronous f/w loading */
+static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
+enum {
+ FW_STATE_INIT = 0,
+ FW_STATE_LOADING_PREF,
+ FW_STATE_LOADING_ALT,
+ FW_STATE_ERROR,
+};
+
+/* Request fw image */
+static int mwl8k_request_fw(struct mwl8k_priv *priv,
+ const char *fname, const struct firmware **fw,
+ bool nowait)
+{
+ /* release current image */
+ if (*fw != NULL)
+ mwl8k_release_fw(fw);
+
+ if (nowait)
+ return request_firmware_nowait(THIS_MODULE, 1, fname,
+ &priv->pdev->dev, GFP_KERNEL,
+ priv, mwl8k_fw_state_machine);
+ else
+ return request_firmware(fw, fname, &priv->pdev->dev);
+}
+
+static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
+ bool nowait)
+{
+ struct mwl8k_device_info *di = priv->device_info;
+ int rc;
+
+ if (di->helper_image != NULL) {
+ if (nowait)
+ rc = mwl8k_request_fw(priv, di->helper_image,
+ &priv->fw_helper, true);
+ else
+ rc = mwl8k_request_fw(priv, di->helper_image,
+ &priv->fw_helper, false);
+ if (rc)
+ printk(KERN_ERR "%s: Error requesting helper fw %s\n",
+ pci_name(priv->pdev), di->helper_image);
+
+ if (rc || nowait)
+ return rc;
+ }
+
+ if (nowait) {
+ /*
+ * if we get here, no helper image is needed. Skip the
+ * FW_STATE_INIT state.
+ */
+ priv->fw_state = FW_STATE_LOADING_PREF;
+ rc = mwl8k_request_fw(priv, fw_image,
+ &priv->fw_ucode,
+ true);
+ } else
+ rc = mwl8k_request_fw(priv, fw_image,
+ &priv->fw_ucode, false);
+ if (rc) {
+ printk(KERN_ERR "%s: Error requesting firmware file %s\n",
+ pci_name(priv->pdev), fw_image);
+ mwl8k_release_fw(&priv->fw_helper);
+ return rc;
+ }
+
+ return 0;
+}
+
+struct mwl8k_cmd_pkt {
+ __le16 code;
+ __le16 length;
+ __u8 seq_num;
+ __u8 macid;
+ __le16 result;
+ char payload[0];
+} __packed;
+
+/*
+ * Firmware loading.
+ */
+static int
+mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
+{
+ void __iomem *regs = priv->regs;
+ dma_addr_t dma_addr;
+ int loops;
+
+ dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(priv->pdev, dma_addr))
+ return -ENOMEM;
+
+ iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
+ iowrite32(0, regs + MWL8K_HIU_INT_CODE);
+ iowrite32(MWL8K_H2A_INT_DOORBELL,
+ regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
+ iowrite32(MWL8K_H2A_INT_DUMMY,
+ regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
+
+ loops = 1000;
+ do {
+ u32 int_code;
+ if (priv->is_8764) {
+ int_code = ioread32(regs +
+ MWL8K_HIU_H2A_INTERRUPT_STATUS);
+ if (int_code == 0)
+ break;
+ } else {
+ int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
+ if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
+ iowrite32(0, regs + MWL8K_HIU_INT_CODE);
+ break;
+ }
+ }
+ cond_resched();
+ udelay(1);
+ } while (--loops);
+
+ pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
+
+ return loops ? 0 : -ETIMEDOUT;
+}
+
+static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
+ const u8 *data, size_t length)
+{
+ struct mwl8k_cmd_pkt *cmd;
+ int done;
+ int rc = 0;
+
+ cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
+ cmd->seq_num = 0;
+ cmd->macid = 0;
+ cmd->result = 0;
+
+ done = 0;
+ while (length) {
+ int block_size = length > 256 ? 256 : length;
+
+ memcpy(cmd->payload, data + done, block_size);
+ cmd->length = cpu_to_le16(block_size);
+
+ rc = mwl8k_send_fw_load_cmd(priv, cmd,
+ sizeof(*cmd) + block_size);
+ if (rc)
+ break;
+
+ done += block_size;
+ length -= block_size;
+ }
+
+ if (!rc) {
+ cmd->length = 0;
+ rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
+ }
+
+ kfree(cmd);
+
+ return rc;
+}
+
+static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
+ const u8 *data, size_t length)
+{
+ unsigned char *buffer;
+ int may_continue, rc = 0;
+ u32 done, prev_block_size;
+
+ buffer = kmalloc(1024, GFP_KERNEL);
+ if (buffer == NULL)
+ return -ENOMEM;
+
+ done = 0;
+ prev_block_size = 0;
+ may_continue = 1000;
+ while (may_continue > 0) {
+ u32 block_size;
+
+ block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
+ if (block_size & 1) {
+ block_size &= ~1;
+ may_continue--;
+ } else {
+ done += prev_block_size;
+ length -= prev_block_size;
+ }
+
+ if (block_size > 1024 || block_size > length) {
+ rc = -EOVERFLOW;
+ break;
+ }
+
+ if (length == 0) {
+ rc = 0;
+ break;
+ }
+
+ if (block_size == 0) {
+ rc = -EPROTO;
+ may_continue--;
+ udelay(1);
+ continue;
+ }
+
+ prev_block_size = block_size;
+ memcpy(buffer, data + done, block_size);
+
+ rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
+ if (rc)
+ break;
+ }
+
+ if (!rc && length != 0)
+ rc = -EREMOTEIO;
+
+ kfree(buffer);
+
+ return rc;
+}
+
+static int mwl8k_load_firmware(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ const struct firmware *fw = priv->fw_ucode;
+ int rc;
+ int loops;
+
+ if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
+ const struct firmware *helper = priv->fw_helper;
+
+ if (helper == NULL) {
+ printk(KERN_ERR "%s: helper image needed but none "
+ "given\n", pci_name(priv->pdev));
+ return -EINVAL;
+ }
+
+ rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
+ if (rc) {
+ printk(KERN_ERR "%s: unable to load firmware "
+ "helper image\n", pci_name(priv->pdev));
+ return rc;
+ }
+ msleep(20);
+
+ rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
+ } else {
+ if (priv->is_8764)
+ rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
+ else
+ rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
+ }
+
+ if (rc) {
+ printk(KERN_ERR "%s: unable to load firmware image\n",
+ pci_name(priv->pdev));
+ return rc;
+ }
+
+ iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
+
+ loops = 500000;
+ do {
+ u32 ready_code;
+
+ ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
+ if (ready_code == MWL8K_FWAP_READY) {
+ priv->ap_fw = true;
+ break;
+ } else if (ready_code == MWL8K_FWSTA_READY) {
+ priv->ap_fw = false;
+ break;
+ }
+
+ cond_resched();
+ udelay(1);
+ } while (--loops);
+
+ return loops ? 0 : -ETIMEDOUT;
+}
+
+
+/* DMA header used by firmware and hardware. */
+struct mwl8k_dma_data {
+ __le16 fwlen;
+ struct ieee80211_hdr wh;
+ char data[0];
+} __packed;
+
+/* Routines to add/remove DMA header from skb. */
+static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
+{
+ struct mwl8k_dma_data *tr;
+ int hdrlen;
+
+ tr = (struct mwl8k_dma_data *)skb->data;
+ hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
+
+ if (hdrlen != sizeof(tr->wh)) {
+ if (ieee80211_is_data_qos(tr->wh.frame_control)) {
+ memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
+ *((__le16 *)(tr->data - 2)) = qos;
+ } else {
+ memmove(tr->data - hdrlen, &tr->wh, hdrlen);
+ }
+ }
+
+ if (hdrlen != sizeof(*tr))
+ skb_pull(skb, sizeof(*tr) - hdrlen);
+}
+
+#define REDUCED_TX_HEADROOM 8
+
+static void
+mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
+ int head_pad, int tail_pad)
+{
+ struct ieee80211_hdr *wh;
+ int hdrlen;
+ int reqd_hdrlen;
+ struct mwl8k_dma_data *tr;
+
+ /*
+ * Add a firmware DMA header; the firmware requires that we
+ * present a 2-byte payload length followed by a 4-address
+ * header (without QoS field), followed (optionally) by any
+ * WEP/ExtIV header (but only filled in for CCMP).
+ */
+ wh = (struct ieee80211_hdr *)skb->data;
+
+ hdrlen = ieee80211_hdrlen(wh->frame_control);
+
+ /*
+ * Check if skb_resize is required because of
+ * tx_headroom adjustment.
+ */
+ if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
+ + REDUCED_TX_HEADROOM))) {
+ if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
+
+ wiphy_err(priv->hw->wiphy,
+ "Failed to reallocate TX buffer\n");
+ return;
+ }
+ skb->truesize += REDUCED_TX_HEADROOM;
+ }
+
+ reqd_hdrlen = sizeof(*tr) + head_pad;
+
+ if (hdrlen != reqd_hdrlen)
+ skb_push(skb, reqd_hdrlen - hdrlen);
+
+ if (ieee80211_is_data_qos(wh->frame_control))
+ hdrlen -= IEEE80211_QOS_CTL_LEN;
+
+ tr = (struct mwl8k_dma_data *)skb->data;
+ if (wh != &tr->wh)
+ memmove(&tr->wh, wh, hdrlen);
+ if (hdrlen != sizeof(tr->wh))
+ memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
+
+ /*
+ * Firmware length is the length of the fully formed "802.11
+ * payload". That is, everything except for the 802.11 header.
+ * This includes all crypto material including the MIC.
+ */
+ tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
+}
+
+static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
+ struct sk_buff *skb)
+{
+ struct ieee80211_hdr *wh;
+ struct ieee80211_tx_info *tx_info;
+ struct ieee80211_key_conf *key_conf;
+ int data_pad;
+ int head_pad = 0;
+
+ wh = (struct ieee80211_hdr *)skb->data;
+
+ tx_info = IEEE80211_SKB_CB(skb);
+
+ key_conf = NULL;
+ if (ieee80211_is_data(wh->frame_control))
+ key_conf = tx_info->control.hw_key;
+
+ /*
+ * Make sure the packet header is in the DMA header format (4-address
+ * without QoS), and add head & tail padding when HW crypto is enabled.
+ *
+ * We have the following trailer padding requirements:
+ * - WEP: 4 trailer bytes (ICV)
+ * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
+ * - CCMP: 8 trailer bytes (MIC)
+ */
+ data_pad = 0;
+ if (key_conf != NULL) {
+ head_pad = key_conf->iv_len;
+ switch (key_conf->cipher) {
+ case WLAN_CIPHER_SUITE_WEP40:
+ case WLAN_CIPHER_SUITE_WEP104:
+ data_pad = 4;
+ break;
+ case WLAN_CIPHER_SUITE_TKIP:
+ data_pad = 12;
+ break;
+ case WLAN_CIPHER_SUITE_CCMP:
+ data_pad = 8;
+ break;
+ }
+ }
+ mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
+}
+
+/*
+ * Packet reception for 88w8366/88w8764 AP firmware.
+ */
+struct mwl8k_rxd_ap {
+ __le16 pkt_len;
+ __u8 sq2;
+ __u8 rate;
+ __le32 pkt_phys_addr;
+ __le32 next_rxd_phys_addr;
+ __le16 qos_control;
+ __le16 htsig2;
+ __le32 hw_rssi_info;
+ __le32 hw_noise_floor_info;
+ __u8 noise_floor;
+ __u8 pad0[3];
+ __u8 rssi;
+ __u8 rx_status;
+ __u8 channel;
+ __u8 rx_ctrl;
+} __packed;
+
+#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80
+#define MWL8K_AP_RATE_INFO_40MHZ 0x40
+#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
+
+#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80
+
+/* 8366/8764 AP rx_status bits */
+#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
+#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
+#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
+#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
+#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
+
+static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
+{
+ struct mwl8k_rxd_ap *rxd = _rxd;
+
+ rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
+ rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
+}
+
+static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
+{
+ struct mwl8k_rxd_ap *rxd = _rxd;
+
+ rxd->pkt_len = cpu_to_le16(len);
+ rxd->pkt_phys_addr = cpu_to_le32(addr);
+ wmb();
+ rxd->rx_ctrl = 0;
+}
+
+static int
+mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
+ __le16 *qos, s8 *noise)
+{
+ struct mwl8k_rxd_ap *rxd = _rxd;
+
+ if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
+ return -1;
+ rmb();
+
+ memset(status, 0, sizeof(*status));
+
+ status->signal = -rxd->rssi;
+ *noise = -rxd->noise_floor;
+
+ if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
+ status->flag |= RX_FLAG_HT;
+ if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
+ status->flag |= RX_FLAG_40MHZ;
+ status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
+ } else {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
+ if (mwl8k_rates_24[i].hw_value == rxd->rate) {
+ status->rate_idx = i;
+ break;
+ }
+ }
+ }
+
+ if (rxd->channel > 14) {
+ status->band = IEEE80211_BAND_5GHZ;
+ if (!(status->flag & RX_FLAG_HT))
+ status->rate_idx -= 5;
+ } else {
+ status->band = IEEE80211_BAND_2GHZ;
+ }
+ status->freq = ieee80211_channel_to_frequency(rxd->channel,
+ status->band);
+
+ *qos = rxd->qos_control;
+
+ if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
+ (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
+ (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
+ status->flag |= RX_FLAG_MMIC_ERROR;
+
+ return le16_to_cpu(rxd->pkt_len);
+}
+
+static struct rxd_ops rxd_ap_ops = {
+ .rxd_size = sizeof(struct mwl8k_rxd_ap),
+ .rxd_init = mwl8k_rxd_ap_init,
+ .rxd_refill = mwl8k_rxd_ap_refill,
+ .rxd_process = mwl8k_rxd_ap_process,
+};
+
+/*
+ * Packet reception for STA firmware.
+ */
+struct mwl8k_rxd_sta {
+ __le16 pkt_len;
+ __u8 link_quality;
+ __u8 noise_level;
+ __le32 pkt_phys_addr;
+ __le32 next_rxd_phys_addr;
+ __le16 qos_control;
+ __le16 rate_info;
+ __le32 pad0[4];
+ __u8 rssi;
+ __u8 channel;
+ __le16 pad1;
+ __u8 rx_ctrl;
+ __u8 rx_status;
+ __u8 pad2[2];
+} __packed;
+
+#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
+#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
+#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
+#define MWL8K_STA_RATE_INFO_40MHZ 0x0004
+#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
+#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
+
+#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
+#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
+/* ICV=0 or MIC=1 */
+#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
+/* Key is uploaded only in failure case */
+#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
+
+static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
+{
+ struct mwl8k_rxd_sta *rxd = _rxd;
+
+ rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
+ rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
+}
+
+static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
+{
+ struct mwl8k_rxd_sta *rxd = _rxd;
+
+ rxd->pkt_len = cpu_to_le16(len);
+ rxd->pkt_phys_addr = cpu_to_le32(addr);
+ wmb();
+ rxd->rx_ctrl = 0;
+}
+
+static int
+mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
+ __le16 *qos, s8 *noise)
+{
+ struct mwl8k_rxd_sta *rxd = _rxd;
+ u16 rate_info;
+
+ if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
+ return -1;
+ rmb();
+
+ rate_info = le16_to_cpu(rxd->rate_info);
+
+ memset(status, 0, sizeof(*status));
+
+ status->signal = -rxd->rssi;
+ *noise = -rxd->noise_level;
+ status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
+ status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
+
+ if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
+ status->flag |= RX_FLAG_SHORTPRE;
+ if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
+ status->flag |= RX_FLAG_40MHZ;
+ if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
+ status->flag |= RX_FLAG_SHORT_GI;
+ if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
+ status->flag |= RX_FLAG_HT;
+
+ if (rxd->channel > 14) {
+ status->band = IEEE80211_BAND_5GHZ;
+ if (!(status->flag & RX_FLAG_HT))
+ status->rate_idx -= 5;
+ } else {
+ status->band = IEEE80211_BAND_2GHZ;
+ }
+ status->freq = ieee80211_channel_to_frequency(rxd->channel,
+ status->band);
+
+ *qos = rxd->qos_control;
+ if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
+ (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
+ status->flag |= RX_FLAG_MMIC_ERROR;
+
+ return le16_to_cpu(rxd->pkt_len);
+}
+
+static struct rxd_ops rxd_sta_ops = {
+ .rxd_size = sizeof(struct mwl8k_rxd_sta),
+ .rxd_init = mwl8k_rxd_sta_init,
+ .rxd_refill = mwl8k_rxd_sta_refill,
+ .rxd_process = mwl8k_rxd_sta_process,
+};
+
+
+#define MWL8K_RX_DESCS 256
+#define MWL8K_RX_MAXSZ 3800
+
+static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_rx_queue *rxq = priv->rxq + index;
+ int size;
+ int i;
+
+ rxq->rxd_count = 0;
+ rxq->head = 0;
+ rxq->tail = 0;
+
+ size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
+
+ rxq->rxd = pci_zalloc_consistent(priv->pdev, size, &rxq->rxd_dma);
+ if (rxq->rxd == NULL) {
+ wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
+ return -ENOMEM;
+ }
+
+ rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
+ if (rxq->buf == NULL) {
+ pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < MWL8K_RX_DESCS; i++) {
+ int desc_size;
+ void *rxd;
+ int nexti;
+ dma_addr_t next_dma_addr;
+
+ desc_size = priv->rxd_ops->rxd_size;
+ rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
+
+ nexti = i + 1;
+ if (nexti == MWL8K_RX_DESCS)
+ nexti = 0;
+ next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
+
+ priv->rxd_ops->rxd_init(rxd, next_dma_addr);
+ }
+
+ return 0;
+}
+
+static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_rx_queue *rxq = priv->rxq + index;
+ int refilled;
+
+ refilled = 0;
+ while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
+ struct sk_buff *skb;
+ dma_addr_t addr;
+ int rx;
+ void *rxd;
+
+ skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
+ if (skb == NULL)
+ break;
+
+ addr = pci_map_single(priv->pdev, skb->data,
+ MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
+
+ rxq->rxd_count++;
+ rx = rxq->tail++;
+ if (rxq->tail == MWL8K_RX_DESCS)
+ rxq->tail = 0;
+ rxq->buf[rx].skb = skb;
+ dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
+
+ rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
+ priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
+
+ refilled++;
+ }
+
+ return refilled;
+}
+
+/* Must be called only when the card's reception is completely halted */
+static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_rx_queue *rxq = priv->rxq + index;
+ int i;
+
+ if (rxq->rxd == NULL)
+ return;
+
+ for (i = 0; i < MWL8K_RX_DESCS; i++) {
+ if (rxq->buf[i].skb != NULL) {
+ pci_unmap_single(priv->pdev,
+ dma_unmap_addr(&rxq->buf[i], dma),
+ MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
+ dma_unmap_addr_set(&rxq->buf[i], dma, 0);
+
+ kfree_skb(rxq->buf[i].skb);
+ rxq->buf[i].skb = NULL;
+ }
+ }
+
+ kfree(rxq->buf);
+ rxq->buf = NULL;
+
+ pci_free_consistent(priv->pdev,
+ MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
+ rxq->rxd, rxq->rxd_dma);
+ rxq->rxd = NULL;
+}
+
+
+/*
+ * Scan a list of BSSIDs to process for finalize join.
+ * Allows for extension to process multiple BSSIDs.
+ */
+static inline int
+mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
+{
+ return priv->capture_beacon &&
+ ieee80211_is_beacon(wh->frame_control) &&
+ ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
+}
+
+static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
+ struct sk_buff *skb)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ priv->capture_beacon = false;
+ eth_zero_addr(priv->capture_bssid);
+
+ /*
+ * Use GFP_ATOMIC as rxq_process is called from
+ * the primary interrupt handler, memory allocation call
+ * must not sleep.
+ */
+ priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
+ if (priv->beacon_skb != NULL)
+ ieee80211_queue_work(hw, &priv->finalize_join_worker);
+}
+
+static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
+ u8 *bssid)
+{
+ struct mwl8k_vif *mwl8k_vif;
+
+ list_for_each_entry(mwl8k_vif,
+ vif_list, list) {
+ if (memcmp(bssid, mwl8k_vif->bssid,
+ ETH_ALEN) == 0)
+ return mwl8k_vif;
+ }
+
+ return NULL;
+}
+
+static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_vif *mwl8k_vif = NULL;
+ struct mwl8k_rx_queue *rxq = priv->rxq + index;
+ int processed;
+
+ processed = 0;
+ while (rxq->rxd_count && limit--) {
+ struct sk_buff *skb;
+ void *rxd;
+ int pkt_len;
+ struct ieee80211_rx_status status;
+ struct ieee80211_hdr *wh;
+ __le16 qos;
+
+ skb = rxq->buf[rxq->head].skb;
+ if (skb == NULL)
+ break;
+
+ rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
+
+ pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
+ &priv->noise);
+ if (pkt_len < 0)
+ break;
+
+ rxq->buf[rxq->head].skb = NULL;
+
+ pci_unmap_single(priv->pdev,
+ dma_unmap_addr(&rxq->buf[rxq->head], dma),
+ MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
+ dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
+
+ rxq->head++;
+ if (rxq->head == MWL8K_RX_DESCS)
+ rxq->head = 0;
+
+ rxq->rxd_count--;
+
+ wh = &((struct mwl8k_dma_data *)skb->data)->wh;
+
+ /*
+ * Check for a pending join operation. Save a
+ * copy of the beacon and schedule a tasklet to
+ * send a FINALIZE_JOIN command to the firmware.
+ */
+ if (mwl8k_capture_bssid(priv, (void *)skb->data))
+ mwl8k_save_beacon(hw, skb);
+
+ if (ieee80211_has_protected(wh->frame_control)) {
+
+ /* Check if hw crypto has been enabled for
+ * this bss. If yes, set the status flags
+ * accordingly
+ */
+ mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
+ wh->addr1);
+
+ if (mwl8k_vif != NULL &&
+ mwl8k_vif->is_hw_crypto_enabled) {
+ /*
+ * When MMIC ERROR is encountered
+ * by the firmware, payload is
+ * dropped and only 32 bytes of
+ * mwl8k Firmware header is sent
+ * to the host.
+ *
+ * We need to add four bytes of
+ * key information. In it
+ * MAC80211 expects keyidx set to
+ * 0 for triggering Counter
+ * Measure of MMIC failure.
+ */
+ if (status.flag & RX_FLAG_MMIC_ERROR) {
+ struct mwl8k_dma_data *tr;
+ tr = (struct mwl8k_dma_data *)skb->data;
+ memset((void *)&(tr->data), 0, 4);
+ pkt_len += 4;
+ }
+
+ if (!ieee80211_is_auth(wh->frame_control))
+ status.flag |= RX_FLAG_IV_STRIPPED |
+ RX_FLAG_DECRYPTED |
+ RX_FLAG_MMIC_STRIPPED;
+ }
+ }
+
+ skb_put(skb, pkt_len);
+ mwl8k_remove_dma_header(skb, qos);
+ memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
+ ieee80211_rx_irqsafe(hw, skb);
+
+ processed++;
+ }
+
+ return processed;
+}
+
+
+/*
+ * Packet transmission.
+ */
+
+#define MWL8K_TXD_STATUS_OK 0x00000001
+#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
+#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
+#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
+#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
+
+#define MWL8K_QOS_QLEN_UNSPEC 0xff00
+#define MWL8K_QOS_ACK_POLICY_MASK 0x0060
+#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
+#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
+#define MWL8K_QOS_EOSP 0x0010
+
+struct mwl8k_tx_desc {
+ __le32 status;
+ __u8 data_rate;
+ __u8 tx_priority;
+ __le16 qos_control;
+ __le32 pkt_phys_addr;
+ __le16 pkt_len;
+ __u8 dest_MAC_addr[ETH_ALEN];
+ __le32 next_txd_phys_addr;
+ __le32 timestamp;
+ __le16 rate_info;
+ __u8 peer_id;
+ __u8 tx_frag_cnt;
+} __packed;
+
+#define MWL8K_TX_DESCS 128
+
+static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_tx_queue *txq = priv->txq + index;
+ int size;
+ int i;
+
+ txq->len = 0;
+ txq->head = 0;
+ txq->tail = 0;
+
+ size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
+
+ txq->txd = pci_zalloc_consistent(priv->pdev, size, &txq->txd_dma);
+ if (txq->txd == NULL) {
+ wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
+ return -ENOMEM;
+ }
+
+ txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
+ if (txq->skb == NULL) {
+ pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < MWL8K_TX_DESCS; i++) {
+ struct mwl8k_tx_desc *tx_desc;
+ int nexti;
+
+ tx_desc = txq->txd + i;
+ nexti = (i + 1) % MWL8K_TX_DESCS;
+
+ tx_desc->status = 0;
+ tx_desc->next_txd_phys_addr =
+ cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
+ }
+
+ return 0;
+}
+
+static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
+{
+ iowrite32(MWL8K_H2A_INT_PPA_READY,
+ priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
+ iowrite32(MWL8K_H2A_INT_DUMMY,
+ priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
+ ioread32(priv->regs + MWL8K_HIU_INT_CODE);
+}
+
+static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int i;
+
+ for (i = 0; i < mwl8k_tx_queues(priv); i++) {
+ struct mwl8k_tx_queue *txq = priv->txq + i;
+ int fw_owned = 0;
+ int drv_owned = 0;
+ int unused = 0;
+ int desc;
+
+ for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
+ struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
+ u32 status;
+
+ status = le32_to_cpu(tx_desc->status);
+ if (status & MWL8K_TXD_STATUS_FW_OWNED)
+ fw_owned++;
+ else
+ drv_owned++;
+
+ if (tx_desc->pkt_len == 0)
+ unused++;
+ }
+
+ wiphy_err(hw->wiphy,
+ "txq[%d] len=%d head=%d tail=%d "
+ "fw_owned=%d drv_owned=%d unused=%d\n",
+ i,
+ txq->len, txq->head, txq->tail,
+ fw_owned, drv_owned, unused);
+ }
+}
+
+/*
+ * Must be called with priv->fw_mutex held and tx queues stopped.
+ */
+#define MWL8K_TX_WAIT_TIMEOUT_MS 5000
+
+static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ DECLARE_COMPLETION_ONSTACK(tx_wait);
+ int retry;
+ int rc;
+
+ might_sleep();
+
+ /* Since fw restart is in progress, allow only the firmware
+ * commands from the restart code and block the other
+ * commands since they are going to fail in any case since
+ * the firmware has crashed
+ */
+ if (priv->hw_restart_in_progress) {
+ if (priv->hw_restart_owner == current)
+ return 0;
+ else
+ return -EBUSY;
+ }
+
+ if (atomic_read(&priv->watchdog_event_pending))
+ return 0;
+
+ /*
+ * The TX queues are stopped at this point, so this test
+ * doesn't need to take ->tx_lock.
+ */
+ if (!priv->pending_tx_pkts)
+ return 0;
+
+ retry = 1;
+ rc = 0;
+
+ spin_lock_bh(&priv->tx_lock);
+ priv->tx_wait = &tx_wait;
+ while (!rc) {
+ int oldcount;
+ unsigned long timeout;
+
+ oldcount = priv->pending_tx_pkts;
+
+ spin_unlock_bh(&priv->tx_lock);
+ timeout = wait_for_completion_timeout(&tx_wait,
+ msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
+
+ if (atomic_read(&priv->watchdog_event_pending)) {
+ spin_lock_bh(&priv->tx_lock);
+ priv->tx_wait = NULL;
+ spin_unlock_bh(&priv->tx_lock);
+ return 0;
+ }
+
+ spin_lock_bh(&priv->tx_lock);
+
+ if (timeout || !priv->pending_tx_pkts) {
+ WARN_ON(priv->pending_tx_pkts);
+ if (retry)
+ wiphy_notice(hw->wiphy, "tx rings drained\n");
+ break;
+ }
+
+ if (retry) {
+ mwl8k_tx_start(priv);
+ retry = 0;
+ continue;
+ }
+
+ if (priv->pending_tx_pkts < oldcount) {
+ wiphy_notice(hw->wiphy,
+ "waiting for tx rings to drain (%d -> %d pkts)\n",
+ oldcount, priv->pending_tx_pkts);
+ retry = 1;
+ continue;
+ }
+
+ priv->tx_wait = NULL;
+
+ wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
+ MWL8K_TX_WAIT_TIMEOUT_MS);
+ mwl8k_dump_tx_rings(hw);
+ priv->hw_restart_in_progress = true;
+ ieee80211_queue_work(hw, &priv->fw_reload);
+
+ rc = -ETIMEDOUT;
+ }
+ priv->tx_wait = NULL;
+ spin_unlock_bh(&priv->tx_lock);
+
+ return rc;
+}
+
+#define MWL8K_TXD_SUCCESS(status) \
+ ((status) & (MWL8K_TXD_STATUS_OK | \
+ MWL8K_TXD_STATUS_OK_RETRY | \
+ MWL8K_TXD_STATUS_OK_MORE_RETRY))
+
+static int mwl8k_tid_queue_mapping(u8 tid)
+{
+ BUG_ON(tid > 7);
+
+ switch (tid) {
+ case 0:
+ case 3:
+ return IEEE80211_AC_BE;
+ case 1:
+ case 2:
+ return IEEE80211_AC_BK;
+ case 4:
+ case 5:
+ return IEEE80211_AC_VI;
+ case 6:
+ case 7:
+ return IEEE80211_AC_VO;
+ default:
+ return -1;
+ }
+}
+
+/* The firmware will fill in the rate information
+ * for each packet that gets queued in the hardware
+ * and these macros will interpret that info.
+ */
+
+#define RI_FORMAT(a) (a & 0x0001)
+#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
+
+static int
+mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_tx_queue *txq = priv->txq + index;
+ int processed;
+
+ processed = 0;
+ while (txq->len > 0 && limit--) {
+ int tx;
+ struct mwl8k_tx_desc *tx_desc;
+ unsigned long addr;
+ int size;
+ struct sk_buff *skb;
+ struct ieee80211_tx_info *info;
+ u32 status;
+ struct ieee80211_sta *sta;
+ struct mwl8k_sta *sta_info = NULL;
+ u16 rate_info;
+ struct ieee80211_hdr *wh;
+
+ tx = txq->head;
+ tx_desc = txq->txd + tx;
+
+ status = le32_to_cpu(tx_desc->status);
+
+ if (status & MWL8K_TXD_STATUS_FW_OWNED) {
+ if (!force)
+ break;
+ tx_desc->status &=
+ ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
+ }
+
+ txq->head = (tx + 1) % MWL8K_TX_DESCS;
+ BUG_ON(txq->len == 0);
+ txq->len--;
+ priv->pending_tx_pkts--;
+
+ addr = le32_to_cpu(tx_desc->pkt_phys_addr);
+ size = le16_to_cpu(tx_desc->pkt_len);
+ skb = txq->skb[tx];
+ txq->skb[tx] = NULL;
+
+ BUG_ON(skb == NULL);
+ pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
+
+ mwl8k_remove_dma_header(skb, tx_desc->qos_control);
+
+ wh = (struct ieee80211_hdr *) skb->data;
+
+ /* Mark descriptor as unused */
+ tx_desc->pkt_phys_addr = 0;
+ tx_desc->pkt_len = 0;
+
+ info = IEEE80211_SKB_CB(skb);
+ if (ieee80211_is_data(wh->frame_control)) {
+ rcu_read_lock();
+ sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
+ wh->addr2);
+ if (sta) {
+ sta_info = MWL8K_STA(sta);
+ BUG_ON(sta_info == NULL);
+ rate_info = le16_to_cpu(tx_desc->rate_info);
+ /* If rate is < 6.5 Mpbs for an ht station
+ * do not form an ampdu. If the station is a
+ * legacy station (format = 0), do not form an
+ * ampdu
+ */
+ if (RI_RATE_ID_MCS(rate_info) < 1 ||
+ RI_FORMAT(rate_info) == 0) {
+ sta_info->is_ampdu_allowed = false;
+ } else {
+ sta_info->is_ampdu_allowed = true;
+ }
+ }
+ rcu_read_unlock();
+ }
+
+ ieee80211_tx_info_clear_status(info);
+
+ /* Rate control is happening in the firmware.
+ * Ensure no tx rate is being reported.
+ */
+ info->status.rates[0].idx = -1;
+ info->status.rates[0].count = 1;
+
+ if (MWL8K_TXD_SUCCESS(status))
+ info->flags |= IEEE80211_TX_STAT_ACK;
+
+ ieee80211_tx_status_irqsafe(hw, skb);
+
+ processed++;
+ }
+
+ return processed;
+}
+
+/* must be called only when the card's transmit is completely halted */
+static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_tx_queue *txq = priv->txq + index;
+
+ if (txq->txd == NULL)
+ return;
+
+ mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
+
+ kfree(txq->skb);
+ txq->skb = NULL;
+
+ pci_free_consistent(priv->pdev,
+ MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
+ txq->txd, txq->txd_dma);
+ txq->txd = NULL;
+}
+
+/* caller must hold priv->stream_lock when calling the stream functions */
+static struct mwl8k_ampdu_stream *
+mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
+{
+ struct mwl8k_ampdu_stream *stream;
+ struct mwl8k_priv *priv = hw->priv;
+ int i;
+
+ for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
+ stream = &priv->ampdu[i];
+ if (stream->state == AMPDU_NO_STREAM) {
+ stream->sta = sta;
+ stream->state = AMPDU_STREAM_NEW;
+ stream->tid = tid;
+ stream->idx = i;
+ wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
+ sta->addr, tid);
+ return stream;
+ }
+ }
+ return NULL;
+}
+
+static int
+mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
+{
+ int ret;
+
+ /* if the stream has already been started, don't start it again */
+ if (stream->state != AMPDU_STREAM_NEW)
+ return 0;
+ ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
+ if (ret)
+ wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
+ "%d\n", stream->sta->addr, stream->tid, ret);
+ else
+ wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
+ stream->sta->addr, stream->tid);
+ return ret;
+}
+
+static void
+mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
+{
+ wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
+ stream->tid);
+ memset(stream, 0, sizeof(*stream));
+}
+
+static struct mwl8k_ampdu_stream *
+mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int i;
+
+ for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
+ struct mwl8k_ampdu_stream *stream;
+ stream = &priv->ampdu[i];
+ if (stream->state == AMPDU_NO_STREAM)
+ continue;
+ if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
+ stream->tid == tid)
+ return stream;
+ }
+ return NULL;
+}
+
+#define MWL8K_AMPDU_PACKET_THRESHOLD 64
+static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
+{
+ struct mwl8k_sta *sta_info = MWL8K_STA(sta);
+ struct tx_traffic_info *tx_stats;
+
+ BUG_ON(tid >= MWL8K_MAX_TID);
+ tx_stats = &sta_info->tx_stats[tid];
+
+ return sta_info->is_ampdu_allowed &&
+ tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
+}
+
+static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
+{
+ struct mwl8k_sta *sta_info = MWL8K_STA(sta);
+ struct tx_traffic_info *tx_stats;
+
+ BUG_ON(tid >= MWL8K_MAX_TID);
+ tx_stats = &sta_info->tx_stats[tid];
+
+ if (tx_stats->start_time == 0)
+ tx_stats->start_time = jiffies;
+
+ /* reset the packet count after each second elapses. If the number of
+ * packets ever exceeds the ampdu_min_traffic threshold, we will allow
+ * an ampdu stream to be started.
+ */
+ if (jiffies - tx_stats->start_time > HZ) {
+ tx_stats->pkts = 0;
+ tx_stats->start_time = 0;
+ } else
+ tx_stats->pkts++;
+}
+
+/* The hardware ampdu queues start from 5.
+ * txpriorities for ampdu queues are
+ * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
+ * and queue 3 is lowest (queue 4 is reserved)
+ */
+#define BA_QUEUE 5
+
+static void
+mwl8k_txq_xmit(struct ieee80211_hw *hw,
+ int index,
+ struct ieee80211_sta *sta,
+ struct sk_buff *skb)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct ieee80211_tx_info *tx_info;
+ struct mwl8k_vif *mwl8k_vif;
+ struct ieee80211_hdr *wh;
+ struct mwl8k_tx_queue *txq;
+ struct mwl8k_tx_desc *tx;
+ dma_addr_t dma;
+ u32 txstatus;
+ u8 txdatarate;
+ u16 qos;
+ int txpriority;
+ u8 tid = 0;
+ struct mwl8k_ampdu_stream *stream = NULL;
+ bool start_ba_session = false;
+ bool mgmtframe = false;
+ struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+ bool eapol_frame = false;
+
+ wh = (struct ieee80211_hdr *)skb->data;
+ if (ieee80211_is_data_qos(wh->frame_control))
+ qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
+ else
+ qos = 0;
+
+ if (skb->protocol == cpu_to_be16(ETH_P_PAE))
+ eapol_frame = true;
+
+ if (ieee80211_is_mgmt(wh->frame_control))
+ mgmtframe = true;
+
+ if (priv->ap_fw)
+ mwl8k_encapsulate_tx_frame(priv, skb);
+ else
+ mwl8k_add_dma_header(priv, skb, 0, 0);
+
+ wh = &((struct mwl8k_dma_data *)skb->data)->wh;
+
+ tx_info = IEEE80211_SKB_CB(skb);
+ mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
+
+ if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
+ wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
+ wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
+ mwl8k_vif->seqno += 0x10;
+ }
+
+ /* Setup firmware control bit fields for each frame type. */
+ txstatus = 0;
+ txdatarate = 0;
+ if (ieee80211_is_mgmt(wh->frame_control) ||
+ ieee80211_is_ctl(wh->frame_control)) {
+ txdatarate = 0;
+ qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
+ } else if (ieee80211_is_data(wh->frame_control)) {
+ txdatarate = 1;
+ if (is_multicast_ether_addr(wh->addr1))
+ txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
+
+ qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
+ if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
+ qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
+ else
+ qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
+ }
+
+ /* Queue ADDBA request in the respective data queue. While setting up
+ * the ampdu stream, mac80211 queues further packets for that
+ * particular ra/tid pair. However, packets piled up in the hardware
+ * for that ra/tid pair will still go out. ADDBA request and the
+ * related data packets going out from different queues asynchronously
+ * will cause a shift in the receiver window which might result in
+ * ampdu packets getting dropped at the receiver after the stream has
+ * been setup.
+ */
+ if (unlikely(ieee80211_is_action(wh->frame_control) &&
+ mgmt->u.action.category == WLAN_CATEGORY_BACK &&
+ mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
+ priv->ap_fw)) {
+ u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
+ tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
+ index = mwl8k_tid_queue_mapping(tid);
+ }
+
+ txpriority = index;
+
+ if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
+ ieee80211_is_data_qos(wh->frame_control)) {
+ tid = qos & 0xf;
+ mwl8k_tx_count_packet(sta, tid);
+ spin_lock(&priv->stream_lock);
+ stream = mwl8k_lookup_stream(hw, sta->addr, tid);
+ if (stream != NULL) {
+ if (stream->state == AMPDU_STREAM_ACTIVE) {
+ WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
+ txpriority = (BA_QUEUE + stream->idx) %
+ TOTAL_HW_TX_QUEUES;
+ if (stream->idx <= 1)
+ index = stream->idx +
+ MWL8K_TX_WMM_QUEUES;
+
+ } else if (stream->state == AMPDU_STREAM_NEW) {
+ /* We get here if the driver sends us packets
+ * after we've initiated a stream, but before
+ * our ampdu_action routine has been called
+ * with IEEE80211_AMPDU_TX_START to get the SSN
+ * for the ADDBA request. So this packet can
+ * go out with no risk of sequence number
+ * mismatch. No special handling is required.
+ */
+ } else {
+ /* Drop packets that would go out after the
+ * ADDBA request was sent but before the ADDBA
+ * response is received. If we don't do this,
+ * the recipient would probably receive it
+ * after the ADDBA request with SSN 0. This
+ * will cause the recipient's BA receive window
+ * to shift, which would cause the subsequent
+ * packets in the BA stream to be discarded.
+ * mac80211 queues our packets for us in this
+ * case, so this is really just a safety check.
+ */
+ wiphy_warn(hw->wiphy,
+ "Cannot send packet while ADDBA "
+ "dialog is underway.\n");
+ spin_unlock(&priv->stream_lock);
+ dev_kfree_skb(skb);
+ return;
+ }
+ } else {
+ /* Defer calling mwl8k_start_stream so that the current
+ * skb can go out before the ADDBA request. This
+ * prevents sequence number mismatch at the recepient
+ * as described above.
+ */
+ if (mwl8k_ampdu_allowed(sta, tid)) {
+ stream = mwl8k_add_stream(hw, sta, tid);
+ if (stream != NULL)
+ start_ba_session = true;
+ }
+ }
+ spin_unlock(&priv->stream_lock);
+ } else {
+ qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
+ qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
+ }
+
+ dma = pci_map_single(priv->pdev, skb->data,
+ skb->len, PCI_DMA_TODEVICE);
+
+ if (pci_dma_mapping_error(priv->pdev, dma)) {
+ wiphy_debug(hw->wiphy,
+ "failed to dma map skb, dropping TX frame.\n");
+ if (start_ba_session) {
+ spin_lock(&priv->stream_lock);
+ mwl8k_remove_stream(hw, stream);
+ spin_unlock(&priv->stream_lock);
+ }
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ spin_lock_bh(&priv->tx_lock);
+
+ txq = priv->txq + index;
+
+ /* Mgmt frames that go out frequently are probe
+ * responses. Other mgmt frames got out relatively
+ * infrequently. Hence reserve 2 buffers so that
+ * other mgmt frames do not get dropped due to an
+ * already queued probe response in one of the
+ * reserved buffers.
+ */
+
+ if (txq->len >= MWL8K_TX_DESCS - 2) {
+ if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
+ if (start_ba_session) {
+ spin_lock(&priv->stream_lock);
+ mwl8k_remove_stream(hw, stream);
+ spin_unlock(&priv->stream_lock);
+ }
+ mwl8k_tx_start(priv);
+ spin_unlock_bh(&priv->tx_lock);
+ pci_unmap_single(priv->pdev, dma, skb->len,
+ PCI_DMA_TODEVICE);
+ dev_kfree_skb(skb);
+ return;
+ }
+ }
+
+ BUG_ON(txq->skb[txq->tail] != NULL);
+ txq->skb[txq->tail] = skb;
+
+ tx = txq->txd + txq->tail;
+ tx->data_rate = txdatarate;
+ tx->tx_priority = txpriority;
+ tx->qos_control = cpu_to_le16(qos);
+ tx->pkt_phys_addr = cpu_to_le32(dma);
+ tx->pkt_len = cpu_to_le16(skb->len);
+ tx->rate_info = 0;
+ if (!priv->ap_fw && sta != NULL)
+ tx->peer_id = MWL8K_STA(sta)->peer_id;
+ else
+ tx->peer_id = 0;
+
+ if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
+ tx->timestamp = cpu_to_le32(ioread32(priv->regs +
+ MWL8K_HW_TIMER_REGISTER));
+ else
+ tx->timestamp = 0;
+
+ wmb();
+ tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
+
+ txq->len++;
+ priv->pending_tx_pkts++;
+
+ txq->tail++;
+ if (txq->tail == MWL8K_TX_DESCS)
+ txq->tail = 0;
+
+ mwl8k_tx_start(priv);
+
+ spin_unlock_bh(&priv->tx_lock);
+
+ /* Initiate the ampdu session here */
+ if (start_ba_session) {
+ spin_lock(&priv->stream_lock);
+ if (mwl8k_start_stream(hw, stream))
+ mwl8k_remove_stream(hw, stream);
+ spin_unlock(&priv->stream_lock);
+ }
+}
+
+
+/*
+ * Firmware access.
+ *
+ * We have the following requirements for issuing firmware commands:
+ * - Some commands require that the packet transmit path is idle when
+ * the command is issued. (For simplicity, we'll just quiesce the
+ * transmit path for every command.)
+ * - There are certain sequences of commands that need to be issued to
+ * the hardware sequentially, with no other intervening commands.
+ *
+ * This leads to an implementation of a "firmware lock" as a mutex that
+ * can be taken recursively, and which is taken by both the low-level
+ * command submission function (mwl8k_post_cmd) as well as any users of
+ * that function that require issuing of an atomic sequence of commands,
+ * and quiesces the transmit path whenever it's taken.
+ */
+static int mwl8k_fw_lock(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ if (priv->fw_mutex_owner != current) {
+ int rc;
+
+ mutex_lock(&priv->fw_mutex);
+ ieee80211_stop_queues(hw);
+
+ rc = mwl8k_tx_wait_empty(hw);
+ if (rc) {
+ if (!priv->hw_restart_in_progress)
+ ieee80211_wake_queues(hw);
+
+ mutex_unlock(&priv->fw_mutex);
+
+ return rc;
+ }
+
+ priv->fw_mutex_owner = current;
+ }
+
+ priv->fw_mutex_depth++;
+
+ return 0;
+}
+
+static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ if (!--priv->fw_mutex_depth) {
+ if (!priv->hw_restart_in_progress)
+ ieee80211_wake_queues(hw);
+
+ priv->fw_mutex_owner = NULL;
+ mutex_unlock(&priv->fw_mutex);
+ }
+}
+
+static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
+ u32 bitmap);
+
+/*
+ * Command processing.
+ */
+
+/* Timeout firmware commands after 10s */
+#define MWL8K_CMD_TIMEOUT_MS 10000
+
+static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
+{
+ DECLARE_COMPLETION_ONSTACK(cmd_wait);
+ struct mwl8k_priv *priv = hw->priv;
+ void __iomem *regs = priv->regs;
+ dma_addr_t dma_addr;
+ unsigned int dma_size;
+ int rc;
+ unsigned long timeout = 0;
+ u8 buf[32];
+ u32 bitmap = 0;
+
+ wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
+ mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
+
+ /* Before posting firmware commands that could change the hardware
+ * characteristics, make sure that all BSSes are stopped temporary.
+ * Enable these stopped BSSes after completion of the commands
+ */
+
+ rc = mwl8k_fw_lock(hw);
+ if (rc)
+ return rc;
+
+ if (priv->ap_fw && priv->running_bsses) {
+ switch (le16_to_cpu(cmd->code)) {
+ case MWL8K_CMD_SET_RF_CHANNEL:
+ case MWL8K_CMD_RADIO_CONTROL:
+ case MWL8K_CMD_RF_TX_POWER:
+ case MWL8K_CMD_TX_POWER:
+ case MWL8K_CMD_RF_ANTENNA:
+ case MWL8K_CMD_RTS_THRESHOLD:
+ case MWL8K_CMD_MIMO_CONFIG:
+ bitmap = priv->running_bsses;
+ mwl8k_enable_bsses(hw, false, bitmap);
+ break;
+ }
+ }
+
+ cmd->result = (__force __le16) 0xffff;
+ dma_size = le16_to_cpu(cmd->length);
+ dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
+ PCI_DMA_BIDIRECTIONAL);
+ if (pci_dma_mapping_error(priv->pdev, dma_addr))
+ return -ENOMEM;
+
+ priv->hostcmd_wait = &cmd_wait;
+ iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
+ iowrite32(MWL8K_H2A_INT_DOORBELL,
+ regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
+ iowrite32(MWL8K_H2A_INT_DUMMY,
+ regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
+
+ timeout = wait_for_completion_timeout(&cmd_wait,
+ msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
+
+ priv->hostcmd_wait = NULL;
+
+
+ pci_unmap_single(priv->pdev, dma_addr, dma_size,
+ PCI_DMA_BIDIRECTIONAL);
+
+ if (!timeout) {
+ wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
+ mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
+ MWL8K_CMD_TIMEOUT_MS);
+ rc = -ETIMEDOUT;
+ } else {
+ int ms;
+
+ ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
+
+ rc = cmd->result ? -EINVAL : 0;
+ if (rc)
+ wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
+ mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
+ le16_to_cpu(cmd->result));
+ else if (ms > 2000)
+ wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
+ mwl8k_cmd_name(cmd->code,
+ buf, sizeof(buf)),
+ ms);
+ }
+
+ if (bitmap)
+ mwl8k_enable_bsses(hw, true, bitmap);
+
+ mwl8k_fw_unlock(hw);
+
+ return rc;
+}
+
+static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct mwl8k_cmd_pkt *cmd)
+{
+ if (vif != NULL)
+ cmd->macid = MWL8K_VIF(vif)->macid;
+ return mwl8k_post_cmd(hw, cmd);
+}
+
+/*
+ * Setup code shared between STA and AP firmware images.
+ */
+static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
+ memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
+
+ BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
+ memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
+
+ priv->band_24.band = IEEE80211_BAND_2GHZ;
+ priv->band_24.channels = priv->channels_24;
+ priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
+ priv->band_24.bitrates = priv->rates_24;
+ priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
+
+ hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
+}
+
+static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
+ memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
+
+ BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
+ memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
+
+ priv->band_50.band = IEEE80211_BAND_5GHZ;
+ priv->band_50.channels = priv->channels_50;
+ priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
+ priv->band_50.bitrates = priv->rates_50;
+ priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
+
+ hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
+}
+
+/*
+ * CMD_GET_HW_SPEC (STA version).
+ */
+struct mwl8k_cmd_get_hw_spec_sta {
+ struct mwl8k_cmd_pkt header;
+ __u8 hw_rev;
+ __u8 host_interface;
+ __le16 num_mcaddrs;
+ __u8 perm_addr[ETH_ALEN];
+ __le16 region_code;
+ __le32 fw_rev;
+ __le32 ps_cookie;
+ __le32 caps;
+ __u8 mcs_bitmap[16];
+ __le32 rx_queue_ptr;
+ __le32 num_tx_queues;
+ __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
+ __le32 caps2;
+ __le32 num_tx_desc_per_queue;
+ __le32 total_rxd;
+} __packed;
+
+#define MWL8K_CAP_MAX_AMSDU 0x20000000
+#define MWL8K_CAP_GREENFIELD 0x08000000
+#define MWL8K_CAP_AMPDU 0x04000000
+#define MWL8K_CAP_RX_STBC 0x01000000
+#define MWL8K_CAP_TX_STBC 0x00800000
+#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
+#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
+#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
+#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
+#define MWL8K_CAP_DELAY_BA 0x00003000
+#define MWL8K_CAP_MIMO 0x00000200
+#define MWL8K_CAP_40MHZ 0x00000100
+#define MWL8K_CAP_BAND_MASK 0x00000007
+#define MWL8K_CAP_5GHZ 0x00000004
+#define MWL8K_CAP_2GHZ4 0x00000001
+
+static void
+mwl8k_set_ht_caps(struct ieee80211_hw *hw,
+ struct ieee80211_supported_band *band, u32 cap)
+{
+ int rx_streams;
+ int tx_streams;
+
+ band->ht_cap.ht_supported = 1;
+
+ if (cap & MWL8K_CAP_MAX_AMSDU)
+ band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
+ if (cap & MWL8K_CAP_GREENFIELD)
+ band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
+ if (cap & MWL8K_CAP_AMPDU) {
+ ieee80211_hw_set(hw, AMPDU_AGGREGATION);
+ band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
+ band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
+ }
+ if (cap & MWL8K_CAP_RX_STBC)
+ band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
+ if (cap & MWL8K_CAP_TX_STBC)
+ band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
+ if (cap & MWL8K_CAP_SHORTGI_40MHZ)
+ band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
+ if (cap & MWL8K_CAP_SHORTGI_20MHZ)
+ band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
+ if (cap & MWL8K_CAP_DELAY_BA)
+ band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
+ if (cap & MWL8K_CAP_40MHZ)
+ band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+
+ rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
+ tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
+
+ band->ht_cap.mcs.rx_mask[0] = 0xff;
+ if (rx_streams >= 2)
+ band->ht_cap.mcs.rx_mask[1] = 0xff;
+ if (rx_streams >= 3)
+ band->ht_cap.mcs.rx_mask[2] = 0xff;
+ band->ht_cap.mcs.rx_mask[4] = 0x01;
+ band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
+
+ if (rx_streams != tx_streams) {
+ band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
+ band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
+ IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
+ }
+}
+
+static void
+mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ if (priv->caps)
+ return;
+
+ if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
+ mwl8k_setup_2ghz_band(hw);
+ if (caps & MWL8K_CAP_MIMO)
+ mwl8k_set_ht_caps(hw, &priv->band_24, caps);
+ }
+
+ if (caps & MWL8K_CAP_5GHZ) {
+ mwl8k_setup_5ghz_band(hw);
+ if (caps & MWL8K_CAP_MIMO)
+ mwl8k_set_ht_caps(hw, &priv->band_50, caps);
+ }
+
+ priv->caps = caps;
+}
+
+static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_cmd_get_hw_spec_sta *cmd;
+ int rc;
+ int i;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+
+ memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
+ cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
+ cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
+ cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
+ for (i = 0; i < mwl8k_tx_queues(priv); i++)
+ cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
+ cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
+ cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+
+ if (!rc) {
+ SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
+ priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
+ priv->fw_rev = le32_to_cpu(cmd->fw_rev);
+ priv->hw_rev = cmd->hw_rev;
+ mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
+ priv->ap_macids_supported = 0x00000000;
+ priv->sta_macids_supported = 0x00000001;
+ }
+
+ kfree(cmd);
+ return rc;
+}
+
+/*
+ * CMD_GET_HW_SPEC (AP version).
+ */
+struct mwl8k_cmd_get_hw_spec_ap {
+ struct mwl8k_cmd_pkt header;
+ __u8 hw_rev;
+ __u8 host_interface;
+ __le16 num_wcb;
+ __le16 num_mcaddrs;
+ __u8 perm_addr[ETH_ALEN];
+ __le16 region_code;
+ __le16 num_antenna;
+ __le32 fw_rev;
+ __le32 wcbbase0;
+ __le32 rxwrptr;
+ __le32 rxrdptr;
+ __le32 ps_cookie;
+ __le32 wcbbase1;
+ __le32 wcbbase2;
+ __le32 wcbbase3;
+ __le32 fw_api_version;
+ __le32 caps;
+ __le32 num_of_ampdu_queues;
+ __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
+} __packed;
+
+static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_cmd_get_hw_spec_ap *cmd;
+ int rc, i;
+ u32 api_version;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+
+ memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
+ cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+
+ if (!rc) {
+ int off;
+
+ api_version = le32_to_cpu(cmd->fw_api_version);
+ if (priv->device_info->fw_api_ap != api_version) {
+ printk(KERN_ERR "%s: Unsupported fw API version for %s."
+ " Expected %d got %d.\n", MWL8K_NAME,
+ priv->device_info->part_name,
+ priv->device_info->fw_api_ap,
+ api_version);
+ rc = -EINVAL;
+ goto done;
+ }
+ SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
+ priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
+ priv->fw_rev = le32_to_cpu(cmd->fw_rev);
+ priv->hw_rev = cmd->hw_rev;
+ mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
+ priv->ap_macids_supported = 0x000000ff;
+ priv->sta_macids_supported = 0x00000100;
+ priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
+ if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
+ wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
+ " but we only support %d.\n",
+ priv->num_ampdu_queues,
+ MWL8K_MAX_AMPDU_QUEUES);
+ priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
+ }
+ off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
+ iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
+
+ off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
+ iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
+
+ priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
+ priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
+ priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
+ priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
+
+ for (i = 0; i < priv->num_ampdu_queues; i++)
+ priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
+ le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
+ }
+
+done:
+ kfree(cmd);
+ return rc;
+}
+
+/*
+ * CMD_SET_HW_SPEC.
+ */
+struct mwl8k_cmd_set_hw_spec {
+ struct mwl8k_cmd_pkt header;
+ __u8 hw_rev;
+ __u8 host_interface;
+ __le16 num_mcaddrs;
+ __u8 perm_addr[ETH_ALEN];
+ __le16 region_code;
+ __le32 fw_rev;
+ __le32 ps_cookie;
+ __le32 caps;
+ __le32 rx_queue_ptr;
+ __le32 num_tx_queues;
+ __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
+ __le32 flags;
+ __le32 num_tx_desc_per_queue;
+ __le32 total_rxd;
+} __packed;
+
+/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
+ * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
+ * the packets that are queued for more than 500ms, will be dropped in the
+ * hardware. This helps minimizing the issues caused due to head-of-line
+ * blocking where a slow client can hog the bandwidth and affect traffic to a
+ * faster client.
+ */
+#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
+#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
+#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
+#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
+#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
+
+static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_cmd_set_hw_spec *cmd;
+ int rc;
+ int i;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+
+ cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
+ cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
+ cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
+
+ /*
+ * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
+ * that order. Firmware has Q3 as highest priority and Q0 as lowest
+ * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
+ * priority is interpreted the right way in firmware.
+ */
+ for (i = 0; i < mwl8k_tx_queues(priv); i++) {
+ int j = mwl8k_tx_queues(priv) - 1 - i;
+ cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
+ }
+
+ cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
+ MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
+ MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
+ MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
+ MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
+ cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
+ cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_MAC_MULTICAST_ADR.
+ */
+struct mwl8k_cmd_mac_multicast_adr {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+ __le16 numaddr;
+ __u8 addr[0][ETH_ALEN];
+};
+
+#define MWL8K_ENABLE_RX_DIRECTED 0x0001
+#define MWL8K_ENABLE_RX_MULTICAST 0x0002
+#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
+#define MWL8K_ENABLE_RX_BROADCAST 0x0008
+
+static struct mwl8k_cmd_pkt *
+__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
+ struct netdev_hw_addr_list *mc_list)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_cmd_mac_multicast_adr *cmd;
+ int size;
+ int mc_count = 0;
+
+ if (mc_list)
+ mc_count = netdev_hw_addr_list_count(mc_list);
+
+ if (allmulti || mc_count > priv->num_mcaddrs) {
+ allmulti = 1;
+ mc_count = 0;
+ }
+
+ size = sizeof(*cmd) + mc_count * ETH_ALEN;
+
+ cmd = kzalloc(size, GFP_ATOMIC);
+ if (cmd == NULL)
+ return NULL;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
+ cmd->header.length = cpu_to_le16(size);
+ cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
+ MWL8K_ENABLE_RX_BROADCAST);
+
+ if (allmulti) {
+ cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
+ } else if (mc_count) {
+ struct netdev_hw_addr *ha;
+ int i = 0;
+
+ cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
+ cmd->numaddr = cpu_to_le16(mc_count);
+ netdev_hw_addr_list_for_each(ha, mc_list) {
+ memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
+ }
+ }
+
+ return &cmd->header;
+}
+
+/*
+ * CMD_GET_STAT.
+ */
+struct mwl8k_cmd_get_stat {
+ struct mwl8k_cmd_pkt header;
+ __le32 stats[64];
+} __packed;
+
+#define MWL8K_STAT_ACK_FAILURE 9
+#define MWL8K_STAT_RTS_FAILURE 12
+#define MWL8K_STAT_FCS_ERROR 24
+#define MWL8K_STAT_RTS_SUCCESS 11
+
+static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
+ struct ieee80211_low_level_stats *stats)
+{
+ struct mwl8k_cmd_get_stat *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ if (!rc) {
+ stats->dot11ACKFailureCount =
+ le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
+ stats->dot11RTSFailureCount =
+ le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
+ stats->dot11FCSErrorCount =
+ le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
+ stats->dot11RTSSuccessCount =
+ le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
+ }
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_RADIO_CONTROL.
+ */
+struct mwl8k_cmd_radio_control {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+ __le16 control;
+ __le16 radio_on;
+} __packed;
+
+static int
+mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_cmd_radio_control *cmd;
+ int rc;
+
+ if (enable == priv->radio_on && !force)
+ return 0;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(MWL8K_CMD_SET);
+ cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
+ cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ if (!rc)
+ priv->radio_on = enable;
+
+ return rc;
+}
+
+static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
+{
+ return mwl8k_cmd_radio_control(hw, 0, 0);
+}
+
+static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
+{
+ return mwl8k_cmd_radio_control(hw, 1, 0);
+}
+
+static int
+mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ priv->radio_short_preamble = short_preamble;
+
+ return mwl8k_cmd_radio_control(hw, 1, 1);
+}
+
+/*
+ * CMD_RF_TX_POWER.
+ */
+#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
+
+struct mwl8k_cmd_rf_tx_power {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+ __le16 support_level;
+ __le16 current_level;
+ __le16 reserved;
+ __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
+} __packed;
+
+static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
+{
+ struct mwl8k_cmd_rf_tx_power *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(MWL8K_CMD_SET);
+ cmd->support_level = cpu_to_le16(dBm);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_TX_POWER.
+ */
+#define MWL8K_TX_POWER_LEVEL_TOTAL 12
+
+struct mwl8k_cmd_tx_power {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+ __le16 band;
+ __le16 channel;
+ __le16 bw;
+ __le16 sub_ch;
+ __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
+} __packed;
+
+static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
+ struct ieee80211_conf *conf,
+ unsigned short pwr)
+{
+ struct ieee80211_channel *channel = conf->chandef.chan;
+ enum nl80211_channel_type channel_type =
+ cfg80211_get_chandef_type(&conf->chandef);
+ struct mwl8k_cmd_tx_power *cmd;
+ int rc;
+ int i;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
+
+ if (channel->band == IEEE80211_BAND_2GHZ)
+ cmd->band = cpu_to_le16(0x1);
+ else if (channel->band == IEEE80211_BAND_5GHZ)
+ cmd->band = cpu_to_le16(0x4);
+
+ cmd->channel = cpu_to_le16(channel->hw_value);
+
+ if (channel_type == NL80211_CHAN_NO_HT ||
+ channel_type == NL80211_CHAN_HT20) {
+ cmd->bw = cpu_to_le16(0x2);
+ } else {
+ cmd->bw = cpu_to_le16(0x4);
+ if (channel_type == NL80211_CHAN_HT40MINUS)
+ cmd->sub_ch = cpu_to_le16(0x3);
+ else if (channel_type == NL80211_CHAN_HT40PLUS)
+ cmd->sub_ch = cpu_to_le16(0x1);
+ }
+
+ for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
+ cmd->power_level_list[i] = cpu_to_le16(pwr);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_RF_ANTENNA.
+ */
+struct mwl8k_cmd_rf_antenna {
+ struct mwl8k_cmd_pkt header;
+ __le16 antenna;
+ __le16 mode;
+} __packed;
+
+#define MWL8K_RF_ANTENNA_RX 1
+#define MWL8K_RF_ANTENNA_TX 2
+
+static int
+mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
+{
+ struct mwl8k_cmd_rf_antenna *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->antenna = cpu_to_le16(antenna);
+ cmd->mode = cpu_to_le16(mask);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_SET_BEACON.
+ */
+struct mwl8k_cmd_set_beacon {
+ struct mwl8k_cmd_pkt header;
+ __le16 beacon_len;
+ __u8 beacon[0];
+};
+
+static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, u8 *beacon, int len)
+{
+ struct mwl8k_cmd_set_beacon *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
+ cmd->beacon_len = cpu_to_le16(len);
+ memcpy(cmd->beacon, beacon, len);
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_SET_PRE_SCAN.
+ */
+struct mwl8k_cmd_set_pre_scan {
+ struct mwl8k_cmd_pkt header;
+} __packed;
+
+static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
+{
+ struct mwl8k_cmd_set_pre_scan *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_BBP_REG_ACCESS.
+ */
+struct mwl8k_cmd_bbp_reg_access {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+ __le16 offset;
+ u8 value;
+ u8 rsrv[3];
+} __packed;
+
+static int
+mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,
+ u16 action,
+ u16 offset,
+ u8 *value)
+{
+ struct mwl8k_cmd_bbp_reg_access *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(action);
+ cmd->offset = cpu_to_le16(offset);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+
+ if (!rc)
+ *value = cmd->value;
+ else
+ *value = 0;
+
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_SET_POST_SCAN.
+ */
+struct mwl8k_cmd_set_post_scan {
+ struct mwl8k_cmd_pkt header;
+ __le32 isibss;
+ __u8 bssid[ETH_ALEN];
+} __packed;
+
+static int
+mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
+{
+ struct mwl8k_cmd_set_post_scan *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->isibss = 0;
+ memcpy(cmd->bssid, mac, ETH_ALEN);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+static int freq_to_idx(struct mwl8k_priv *priv, int freq)
+{
+ struct ieee80211_supported_band *sband;
+ int band, ch, idx = 0;
+
+ for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
+ sband = priv->hw->wiphy->bands[band];
+ if (!sband)
+ continue;
+
+ for (ch = 0; ch < sband->n_channels; ch++, idx++)
+ if (sband->channels[ch].center_freq == freq)
+ goto exit;
+ }
+
+exit:
+ return idx;
+}
+
+static void mwl8k_update_survey(struct mwl8k_priv *priv,
+ struct ieee80211_channel *channel)
+{
+ u32 cca_cnt, rx_rdy;
+ s8 nf = 0, idx;
+ struct survey_info *survey;
+
+ idx = freq_to_idx(priv, priv->acs_chan->center_freq);
+ if (idx >= MWL8K_NUM_CHANS) {
+ wiphy_err(priv->hw->wiphy, "Failed to update survey\n");
+ return;
+ }
+
+ survey = &priv->survey[idx];
+
+ cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);
+ cca_cnt /= 1000; /* uSecs to mSecs */
+ survey->time_busy = (u64) cca_cnt;
+
+ rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);
+ rx_rdy /= 1000; /* uSecs to mSecs */
+ survey->time_rx = (u64) rx_rdy;
+
+ priv->channel_time = jiffies - priv->channel_time;
+ survey->time = jiffies_to_msecs(priv->channel_time);
+
+ survey->channel = channel;
+
+ mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);
+
+ /* Make sure sign is negative else ACS at hostapd fails */
+ survey->noise = nf * -1;
+
+ survey->filled = SURVEY_INFO_NOISE_DBM |
+ SURVEY_INFO_TIME |
+ SURVEY_INFO_TIME_BUSY |
+ SURVEY_INFO_TIME_RX;
+}
+
+/*
+ * CMD_SET_RF_CHANNEL.
+ */
+struct mwl8k_cmd_set_rf_channel {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+ __u8 current_channel;
+ __le32 channel_flags;
+} __packed;
+
+static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
+ struct ieee80211_conf *conf)
+{
+ struct ieee80211_channel *channel = conf->chandef.chan;
+ enum nl80211_channel_type channel_type =
+ cfg80211_get_chandef_type(&conf->chandef);
+ struct mwl8k_cmd_set_rf_channel *cmd;
+ struct mwl8k_priv *priv = hw->priv;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(MWL8K_CMD_SET);
+ cmd->current_channel = channel->hw_value;
+
+ if (channel->band == IEEE80211_BAND_2GHZ)
+ cmd->channel_flags |= cpu_to_le32(0x00000001);
+ else if (channel->band == IEEE80211_BAND_5GHZ)
+ cmd->channel_flags |= cpu_to_le32(0x00000004);
+
+ if (!priv->sw_scan_start) {
+ if (channel_type == NL80211_CHAN_NO_HT ||
+ channel_type == NL80211_CHAN_HT20)
+ cmd->channel_flags |= cpu_to_le32(0x00000080);
+ else if (channel_type == NL80211_CHAN_HT40MINUS)
+ cmd->channel_flags |= cpu_to_le32(0x000001900);
+ else if (channel_type == NL80211_CHAN_HT40PLUS)
+ cmd->channel_flags |= cpu_to_le32(0x000000900);
+ } else {
+ cmd->channel_flags |= cpu_to_le32(0x00000080);
+ }
+
+ if (priv->sw_scan_start) {
+ /* Store current channel stats
+ * before switching to newer one.
+ * This will be processed only for AP fw.
+ */
+ if (priv->channel_time != 0)
+ mwl8k_update_survey(priv, priv->acs_chan);
+
+ priv->channel_time = jiffies;
+ priv->acs_chan = channel;
+ }
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_SET_AID.
+ */
+#define MWL8K_FRAME_PROT_DISABLED 0x00
+#define MWL8K_FRAME_PROT_11G 0x07
+#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
+#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
+
+struct mwl8k_cmd_update_set_aid {
+ struct mwl8k_cmd_pkt header;
+ __le16 aid;
+
+ /* AP's MAC address (BSSID) */
+ __u8 bssid[ETH_ALEN];
+ __le16 protection_mode;
+ __u8 supp_rates[14];
+} __packed;
+
+static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
+{
+ int i;
+ int j;
+
+ /*
+ * Clear nonstandard rate 4.
+ */
+ mask &= 0x1fef;
+
+ for (i = 0, j = 0; i < 13; i++) {
+ if (mask & (1 << i))
+ rates[j++] = mwl8k_rates_24[i].hw_value;
+ }
+}
+
+static int
+mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, u32 legacy_rate_mask)
+{
+ struct mwl8k_cmd_update_set_aid *cmd;
+ u16 prot_mode;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->aid = cpu_to_le16(vif->bss_conf.aid);
+ memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
+
+ if (vif->bss_conf.use_cts_prot) {
+ prot_mode = MWL8K_FRAME_PROT_11G;
+ } else {
+ switch (vif->bss_conf.ht_operation_mode &
+ IEEE80211_HT_OP_MODE_PROTECTION) {
+ case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
+ prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
+ break;
+ case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
+ prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
+ break;
+ default:
+ prot_mode = MWL8K_FRAME_PROT_DISABLED;
+ break;
+ }
+ }
+ cmd->protection_mode = cpu_to_le16(prot_mode);
+
+ legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_SET_RATE.
+ */
+struct mwl8k_cmd_set_rate {
+ struct mwl8k_cmd_pkt header;
+ __u8 legacy_rates[14];
+
+ /* Bitmap for supported MCS codes. */
+ __u8 mcs_set[16];
+ __u8 reserved[16];
+} __packed;
+
+static int
+mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ u32 legacy_rate_mask, u8 *mcs_rates)
+{
+ struct mwl8k_cmd_set_rate *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
+ memcpy(cmd->mcs_set, mcs_rates, 16);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_FINALIZE_JOIN.
+ */
+#define MWL8K_FJ_BEACON_MAXLEN 128
+
+struct mwl8k_cmd_finalize_join {
+ struct mwl8k_cmd_pkt header;
+ __le32 sleep_interval; /* Number of beacon periods to sleep */
+ __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
+} __packed;
+
+static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
+ int framelen, int dtim)
+{
+ struct mwl8k_cmd_finalize_join *cmd;
+ struct ieee80211_mgmt *payload = frame;
+ int payload_len;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
+
+ payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
+ if (payload_len < 0)
+ payload_len = 0;
+ else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
+ payload_len = MWL8K_FJ_BEACON_MAXLEN;
+
+ memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_SET_RTS_THRESHOLD.
+ */
+struct mwl8k_cmd_set_rts_threshold {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+ __le16 threshold;
+} __packed;
+
+static int
+mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
+{
+ struct mwl8k_cmd_set_rts_threshold *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(MWL8K_CMD_SET);
+ cmd->threshold = cpu_to_le16(rts_thresh);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_SET_SLOT.
+ */
+struct mwl8k_cmd_set_slot {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+ __u8 short_slot;
+} __packed;
+
+static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
+{
+ struct mwl8k_cmd_set_slot *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(MWL8K_CMD_SET);
+ cmd->short_slot = short_slot_time;
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_SET_EDCA_PARAMS.
+ */
+struct mwl8k_cmd_set_edca_params {
+ struct mwl8k_cmd_pkt header;
+
+ /* See MWL8K_SET_EDCA_XXX below */
+ __le16 action;
+
+ /* TX opportunity in units of 32 us */
+ __le16 txop;
+
+ union {
+ struct {
+ /* Log exponent of max contention period: 0...15 */
+ __le32 log_cw_max;
+
+ /* Log exponent of min contention period: 0...15 */
+ __le32 log_cw_min;
+
+ /* Adaptive interframe spacing in units of 32us */
+ __u8 aifs;
+
+ /* TX queue to configure */
+ __u8 txq;
+ } ap;
+ struct {
+ /* Log exponent of max contention period: 0...15 */
+ __u8 log_cw_max;
+
+ /* Log exponent of min contention period: 0...15 */
+ __u8 log_cw_min;
+
+ /* Adaptive interframe spacing in units of 32us */
+ __u8 aifs;
+
+ /* TX queue to configure */
+ __u8 txq;
+ } sta;
+ };
+} __packed;
+
+#define MWL8K_SET_EDCA_CW 0x01
+#define MWL8K_SET_EDCA_TXOP 0x02
+#define MWL8K_SET_EDCA_AIFS 0x04
+
+#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
+ MWL8K_SET_EDCA_TXOP | \
+ MWL8K_SET_EDCA_AIFS)
+
+static int
+mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
+ __u16 cw_min, __u16 cw_max,
+ __u8 aifs, __u16 txop)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_cmd_set_edca_params *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
+ cmd->txop = cpu_to_le16(txop);
+ if (priv->ap_fw) {
+ cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
+ cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
+ cmd->ap.aifs = aifs;
+ cmd->ap.txq = qnum;
+ } else {
+ cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
+ cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
+ cmd->sta.aifs = aifs;
+ cmd->sta.txq = qnum;
+ }
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_SET_WMM_MODE.
+ */
+struct mwl8k_cmd_set_wmm_mode {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+} __packed;
+
+static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_cmd_set_wmm_mode *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(!!enable);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ if (!rc)
+ priv->wmm_enabled = enable;
+
+ return rc;
+}
+
+/*
+ * CMD_MIMO_CONFIG.
+ */
+struct mwl8k_cmd_mimo_config {
+ struct mwl8k_cmd_pkt header;
+ __le32 action;
+ __u8 rx_antenna_map;
+ __u8 tx_antenna_map;
+} __packed;
+
+static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
+{
+ struct mwl8k_cmd_mimo_config *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
+ cmd->rx_antenna_map = rx;
+ cmd->tx_antenna_map = tx;
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_USE_FIXED_RATE (STA version).
+ */
+struct mwl8k_cmd_use_fixed_rate_sta {
+ struct mwl8k_cmd_pkt header;
+ __le32 action;
+ __le32 allow_rate_drop;
+ __le32 num_rates;
+ struct {
+ __le32 is_ht_rate;
+ __le32 enable_retry;
+ __le32 rate;
+ __le32 retry_count;
+ } rate_entry[8];
+ __le32 rate_type;
+ __le32 reserved1;
+ __le32 reserved2;
+} __packed;
+
+#define MWL8K_USE_AUTO_RATE 0x0002
+#define MWL8K_UCAST_RATE 0
+
+static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
+{
+ struct mwl8k_cmd_use_fixed_rate_sta *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
+ cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_USE_FIXED_RATE (AP version).
+ */
+struct mwl8k_cmd_use_fixed_rate_ap {
+ struct mwl8k_cmd_pkt header;
+ __le32 action;
+ __le32 allow_rate_drop;
+ __le32 num_rates;
+ struct mwl8k_rate_entry_ap {
+ __le32 is_ht_rate;
+ __le32 enable_retry;
+ __le32 rate;
+ __le32 retry_count;
+ } rate_entry[4];
+ u8 multicast_rate;
+ u8 multicast_rate_type;
+ u8 management_rate;
+} __packed;
+
+static int
+mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
+{
+ struct mwl8k_cmd_use_fixed_rate_ap *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
+ cmd->multicast_rate = mcast;
+ cmd->management_rate = mgmt;
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_ENABLE_SNIFFER.
+ */
+struct mwl8k_cmd_enable_sniffer {
+ struct mwl8k_cmd_pkt header;
+ __le32 action;
+} __packed;
+
+static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
+{
+ struct mwl8k_cmd_enable_sniffer *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le32(!!enable);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+struct mwl8k_cmd_update_mac_addr {
+ struct mwl8k_cmd_pkt header;
+ union {
+ struct {
+ __le16 mac_type;
+ __u8 mac_addr[ETH_ALEN];
+ } mbss;
+ __u8 mac_addr[ETH_ALEN];
+ };
+} __packed;
+
+#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
+#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
+#define MWL8K_MAC_TYPE_PRIMARY_AP 2
+#define MWL8K_MAC_TYPE_SECONDARY_AP 3
+
+static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, u8 *mac, bool set)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
+ struct mwl8k_cmd_update_mac_addr *cmd;
+ int mac_type;
+ int rc;
+
+ mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
+ if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
+ if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
+ if (priv->ap_fw)
+ mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
+ else
+ mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
+ else
+ mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
+ } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
+ if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
+ mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
+ else
+ mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
+ }
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ if (set)
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
+ else
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
+
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ if (priv->ap_fw) {
+ cmd->mbss.mac_type = cpu_to_le16(mac_type);
+ memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
+ } else {
+ memcpy(cmd->mac_addr, mac, ETH_ALEN);
+ }
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * MWL8K_CMD_SET_MAC_ADDR.
+ */
+static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, u8 *mac)
+{
+ return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
+}
+
+/*
+ * MWL8K_CMD_DEL_MAC_ADDR.
+ */
+static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, u8 *mac)
+{
+ return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
+}
+
+/*
+ * CMD_SET_RATEADAPT_MODE.
+ */
+struct mwl8k_cmd_set_rate_adapt_mode {
+ struct mwl8k_cmd_pkt header;
+ __le16 action;
+ __le16 mode;
+} __packed;
+
+static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
+{
+ struct mwl8k_cmd_set_rate_adapt_mode *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le16(MWL8K_CMD_SET);
+ cmd->mode = cpu_to_le16(mode);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_GET_WATCHDOG_BITMAP.
+ */
+struct mwl8k_cmd_get_watchdog_bitmap {
+ struct mwl8k_cmd_pkt header;
+ u8 bitmap;
+} __packed;
+
+static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
+{
+ struct mwl8k_cmd_get_watchdog_bitmap *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ if (!rc)
+ *bitmap = cmd->bitmap;
+
+ kfree(cmd);
+
+ return rc;
+}
+
+#define MWL8K_WMM_QUEUE_NUMBER 3
+
+static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
+ u8 idx);
+
+static void mwl8k_watchdog_ba_events(struct work_struct *work)
+{
+ int rc;
+ u8 bitmap = 0, stream_index;
+ struct mwl8k_ampdu_stream *streams;
+ struct mwl8k_priv *priv =
+ container_of(work, struct mwl8k_priv, watchdog_ba_handle);
+ struct ieee80211_hw *hw = priv->hw;
+ int i;
+ u32 status = 0;
+
+ mwl8k_fw_lock(hw);
+
+ rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
+ if (rc)
+ goto done;
+
+ spin_lock(&priv->stream_lock);
+
+ /* the bitmap is the hw queue number. Map it to the ampdu queue. */
+ for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
+ if (bitmap & (1 << i)) {
+ stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
+ TOTAL_HW_TX_QUEUES;
+ streams = &priv->ampdu[stream_index];
+ if (streams->state == AMPDU_STREAM_ACTIVE) {
+ ieee80211_stop_tx_ba_session(streams->sta,
+ streams->tid);
+ spin_unlock(&priv->stream_lock);
+ mwl8k_destroy_ba(hw, stream_index);
+ spin_lock(&priv->stream_lock);
+ }
+ }
+ }
+
+ spin_unlock(&priv->stream_lock);
+done:
+ atomic_dec(&priv->watchdog_event_pending);
+ status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
+ iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
+ priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
+ mwl8k_fw_unlock(hw);
+ return;
+}
+
+
+/*
+ * CMD_BSS_START.
+ */
+struct mwl8k_cmd_bss_start {
+ struct mwl8k_cmd_pkt header;
+ __le32 enable;
+} __packed;
+
+static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, int enable)
+{
+ struct mwl8k_cmd_bss_start *cmd;
+ struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
+ struct mwl8k_priv *priv = hw->priv;
+ int rc;
+
+ if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
+ return 0;
+
+ if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
+ return 0;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->enable = cpu_to_le32(enable);
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+ kfree(cmd);
+
+ if (!rc) {
+ if (enable)
+ priv->running_bsses |= (1 << mwl8k_vif->macid);
+ else
+ priv->running_bsses &= ~(1 << mwl8k_vif->macid);
+ }
+ return rc;
+}
+
+static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_vif *mwl8k_vif, *tmp_vif;
+ struct ieee80211_vif *vif;
+
+ list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
+ vif = mwl8k_vif->vif;
+
+ if (!(bitmap & (1 << mwl8k_vif->macid)))
+ continue;
+
+ if (vif->type == NL80211_IFTYPE_AP)
+ mwl8k_cmd_bss_start(hw, vif, enable);
+ }
+}
+/*
+ * CMD_BASTREAM.
+ */
+
+/*
+ * UPSTREAM is tx direction
+ */
+#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
+#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
+
+enum ba_stream_action_type {
+ MWL8K_BA_CREATE,
+ MWL8K_BA_UPDATE,
+ MWL8K_BA_DESTROY,
+ MWL8K_BA_FLUSH,
+ MWL8K_BA_CHECK,
+};
+
+
+struct mwl8k_create_ba_stream {
+ __le32 flags;
+ __le32 idle_thrs;
+ __le32 bar_thrs;
+ __le32 window_size;
+ u8 peer_mac_addr[6];
+ u8 dialog_token;
+ u8 tid;
+ u8 queue_id;
+ u8 param_info;
+ __le32 ba_context;
+ u8 reset_seq_no_flag;
+ __le16 curr_seq_no;
+ u8 sta_src_mac_addr[6];
+} __packed;
+
+struct mwl8k_destroy_ba_stream {
+ __le32 flags;
+ __le32 ba_context;
+} __packed;
+
+struct mwl8k_cmd_bastream {
+ struct mwl8k_cmd_pkt header;
+ __le32 action;
+ union {
+ struct mwl8k_create_ba_stream create_params;
+ struct mwl8k_destroy_ba_stream destroy_params;
+ };
+} __packed;
+
+static int
+mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
+ struct ieee80211_vif *vif)
+{
+ struct mwl8k_cmd_bastream *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+
+ cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
+
+ cmd->create_params.queue_id = stream->idx;
+ memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
+ ETH_ALEN);
+ cmd->create_params.tid = stream->tid;
+
+ cmd->create_params.flags =
+ cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
+ cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+
+ kfree(cmd);
+
+ return rc;
+}
+
+static int
+mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
+ u8 buf_size, struct ieee80211_vif *vif)
+{
+ struct mwl8k_cmd_bastream *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+
+ cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
+
+ cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
+ cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
+ cmd->create_params.queue_id = stream->idx;
+
+ memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
+ cmd->create_params.tid = stream->tid;
+ cmd->create_params.curr_seq_no = cpu_to_le16(0);
+ cmd->create_params.reset_seq_no_flag = 1;
+
+ cmd->create_params.param_info =
+ (stream->sta->ht_cap.ampdu_factor &
+ IEEE80211_HT_AMPDU_PARM_FACTOR) |
+ ((stream->sta->ht_cap.ampdu_density << 2) &
+ IEEE80211_HT_AMPDU_PARM_DENSITY);
+
+ cmd->create_params.flags =
+ cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
+ BASTREAM_FLAG_DIRECTION_UPSTREAM);
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+
+ wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
+ stream->sta->addr, stream->tid);
+ kfree(cmd);
+
+ return rc;
+}
+
+static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
+ u8 idx)
+{
+ struct mwl8k_cmd_bastream *cmd;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
+
+ cmd->destroy_params.ba_context = cpu_to_le32(idx);
+ mwl8k_post_cmd(hw, &cmd->header);
+
+ wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
+
+ kfree(cmd);
+}
+
+/*
+ * CMD_SET_NEW_STN.
+ */
+struct mwl8k_cmd_set_new_stn {
+ struct mwl8k_cmd_pkt header;
+ __le16 aid;
+ __u8 mac_addr[6];
+ __le16 stn_id;
+ __le16 action;
+ __le16 rsvd;
+ __le32 legacy_rates;
+ __u8 ht_rates[4];
+ __le16 cap_info;
+ __le16 ht_capabilities_info;
+ __u8 mac_ht_param_info;
+ __u8 rev;
+ __u8 control_channel;
+ __u8 add_channel;
+ __le16 op_mode;
+ __le16 stbc;
+ __u8 add_qos_info;
+ __u8 is_qos_sta;
+ __le32 fw_sta_ptr;
+} __packed;
+
+#define MWL8K_STA_ACTION_ADD 0
+#define MWL8K_STA_ACTION_REMOVE 2
+
+static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mwl8k_cmd_set_new_stn *cmd;
+ u32 rates;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->aid = cpu_to_le16(sta->aid);
+ memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
+ cmd->stn_id = cpu_to_le16(sta->aid);
+ cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
+ if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
+ rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
+ else
+ rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
+ cmd->legacy_rates = cpu_to_le32(rates);
+ if (sta->ht_cap.ht_supported) {
+ cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
+ cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
+ cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
+ cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
+ cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
+ cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
+ ((sta->ht_cap.ampdu_density & 7) << 2);
+ cmd->is_qos_sta = 1;
+ }
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mwl8k_cmd_set_new_stn *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, u8 *addr)
+{
+ struct mwl8k_cmd_set_new_stn *cmd;
+ struct mwl8k_priv *priv = hw->priv;
+ int rc, i;
+ u8 idx;
+
+ spin_lock(&priv->stream_lock);
+ /* Destroy any active ampdu streams for this sta */
+ for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
+ struct mwl8k_ampdu_stream *s;
+ s = &priv->ampdu[i];
+ if (s->state != AMPDU_NO_STREAM) {
+ if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
+ if (s->state == AMPDU_STREAM_ACTIVE) {
+ idx = s->idx;
+ spin_unlock(&priv->stream_lock);
+ mwl8k_destroy_ba(hw, idx);
+ spin_lock(&priv->stream_lock);
+ } else if (s->state == AMPDU_STREAM_NEW) {
+ mwl8k_remove_stream(hw, s);
+ }
+ }
+ }
+ }
+
+ spin_unlock(&priv->stream_lock);
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ memcpy(cmd->mac_addr, addr, ETH_ALEN);
+ cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+/*
+ * CMD_UPDATE_ENCRYPTION.
+ */
+
+#define MAX_ENCR_KEY_LENGTH 16
+#define MIC_KEY_LENGTH 8
+
+struct mwl8k_cmd_update_encryption {
+ struct mwl8k_cmd_pkt header;
+
+ __le32 action;
+ __le32 reserved;
+ __u8 mac_addr[6];
+ __u8 encr_type;
+
+} __packed;
+
+struct mwl8k_cmd_set_key {
+ struct mwl8k_cmd_pkt header;
+
+ __le32 action;
+ __le32 reserved;
+ __le16 length;
+ __le16 key_type_id;
+ __le32 key_info;
+ __le32 key_id;
+ __le16 key_len;
+ __u8 key_material[MAX_ENCR_KEY_LENGTH];
+ __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
+ __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
+ __le16 tkip_rsc_low;
+ __le32 tkip_rsc_high;
+ __le16 tkip_tsc_low;
+ __le32 tkip_tsc_high;
+ __u8 mac_addr[6];
+} __packed;
+
+enum {
+ MWL8K_ENCR_ENABLE,
+ MWL8K_ENCR_SET_KEY,
+ MWL8K_ENCR_REMOVE_KEY,
+ MWL8K_ENCR_SET_GROUP_KEY,
+};
+
+#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
+#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
+#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
+#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
+#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
+
+enum {
+ MWL8K_ALG_WEP,
+ MWL8K_ALG_TKIP,
+ MWL8K_ALG_CCMP,
+};
+
+#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
+#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
+#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
+#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
+#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
+
+static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ u8 *addr,
+ u8 encr_type)
+{
+ struct mwl8k_cmd_update_encryption *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
+ memcpy(cmd->mac_addr, addr, ETH_ALEN);
+ cmd->encr_type = encr_type;
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
+ u8 *addr,
+ struct ieee80211_key_conf *key)
+{
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->length = cpu_to_le16(sizeof(*cmd) -
+ offsetof(struct mwl8k_cmd_set_key, length));
+ cmd->key_id = cpu_to_le32(key->keyidx);
+ cmd->key_len = cpu_to_le16(key->keylen);
+ memcpy(cmd->mac_addr, addr, ETH_ALEN);
+
+ switch (key->cipher) {
+ case WLAN_CIPHER_SUITE_WEP40:
+ case WLAN_CIPHER_SUITE_WEP104:
+ cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
+ if (key->keyidx == 0)
+ cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
+
+ break;
+ case WLAN_CIPHER_SUITE_TKIP:
+ cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
+ cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
+ ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
+ : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
+ cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
+ | MWL8K_KEY_FLAG_TSC_VALID);
+ break;
+ case WLAN_CIPHER_SUITE_CCMP:
+ cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
+ cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
+ ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
+ : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
+ break;
+ default:
+ return -ENOTSUPP;
+ }
+
+ return 0;
+}
+
+static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ u8 *addr,
+ struct ieee80211_key_conf *key)
+{
+ struct mwl8k_cmd_set_key *cmd;
+ int rc;
+ int keymlen;
+ u32 action;
+ u8 idx;
+ struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
+ if (rc < 0)
+ goto done;
+
+ idx = key->keyidx;
+
+ if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
+ action = MWL8K_ENCR_SET_KEY;
+ else
+ action = MWL8K_ENCR_SET_GROUP_KEY;
+
+ switch (key->cipher) {
+ case WLAN_CIPHER_SUITE_WEP40:
+ case WLAN_CIPHER_SUITE_WEP104:
+ if (!mwl8k_vif->wep_key_conf[idx].enabled) {
+ memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
+ sizeof(*key) + key->keylen);
+ mwl8k_vif->wep_key_conf[idx].enabled = 1;
+ }
+
+ keymlen = key->keylen;
+ action = MWL8K_ENCR_SET_KEY;
+ break;
+ case WLAN_CIPHER_SUITE_TKIP:
+ keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
+ break;
+ case WLAN_CIPHER_SUITE_CCMP:
+ keymlen = key->keylen;
+ break;
+ default:
+ rc = -ENOTSUPP;
+ goto done;
+ }
+
+ memcpy(cmd->key_material, key->key, keymlen);
+ cmd->action = cpu_to_le32(action);
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+done:
+ kfree(cmd);
+
+ return rc;
+}
+
+static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ u8 *addr,
+ struct ieee80211_key_conf *key)
+{
+ struct mwl8k_cmd_set_key *cmd;
+ int rc;
+ struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
+ if (rc < 0)
+ goto done;
+
+ if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
+ key->cipher == WLAN_CIPHER_SUITE_WEP104)
+ mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
+
+ cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
+
+ rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
+done:
+ kfree(cmd);
+
+ return rc;
+}
+
+static int mwl8k_set_key(struct ieee80211_hw *hw,
+ enum set_key_cmd cmd_param,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
+{
+ int rc = 0;
+ u8 encr_type;
+ u8 *addr;
+ struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
+ struct mwl8k_priv *priv = hw->priv;
+
+ if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
+ return -EOPNOTSUPP;
+
+ if (sta == NULL)
+ addr = vif->addr;
+ else
+ addr = sta->addr;
+
+ if (cmd_param == SET_KEY) {
+ rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
+ if (rc)
+ goto out;
+
+ if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
+ || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
+ encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
+ else
+ encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
+
+ rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
+ encr_type);
+ if (rc)
+ goto out;
+
+ mwl8k_vif->is_hw_crypto_enabled = true;
+
+ } else {
+ rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
+
+ if (rc)
+ goto out;
+ }
+out:
+ return rc;
+}
+
+/*
+ * CMD_UPDATE_STADB.
+ */
+struct ewc_ht_info {
+ __le16 control1;
+ __le16 control2;
+ __le16 control3;
+} __packed;
+
+struct peer_capability_info {
+ /* Peer type - AP vs. STA. */
+ __u8 peer_type;
+
+ /* Basic 802.11 capabilities from assoc resp. */
+ __le16 basic_caps;
+
+ /* Set if peer supports 802.11n high throughput (HT). */
+ __u8 ht_support;
+
+ /* Valid if HT is supported. */
+ __le16 ht_caps;
+ __u8 extended_ht_caps;
+ struct ewc_ht_info ewc_info;
+
+ /* Legacy rate table. Intersection of our rates and peer rates. */
+ __u8 legacy_rates[12];
+
+ /* HT rate table. Intersection of our rates and peer rates. */
+ __u8 ht_rates[16];
+ __u8 pad[16];
+
+ /* If set, interoperability mode, no proprietary extensions. */
+ __u8 interop;
+ __u8 pad2;
+ __u8 station_id;
+ __le16 amsdu_enabled;
+} __packed;
+
+struct mwl8k_cmd_update_stadb {
+ struct mwl8k_cmd_pkt header;
+
+ /* See STADB_ACTION_TYPE */
+ __le32 action;
+
+ /* Peer MAC address */
+ __u8 peer_addr[ETH_ALEN];
+
+ __le32 reserved;
+
+ /* Peer info - valid during add/update. */
+ struct peer_capability_info peer_info;
+} __packed;
+
+#define MWL8K_STA_DB_MODIFY_ENTRY 1
+#define MWL8K_STA_DB_DEL_ENTRY 2
+
+/* Peer Entry flags - used to define the type of the peer node */
+#define MWL8K_PEER_TYPE_ACCESSPOINT 2
+
+static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mwl8k_cmd_update_stadb *cmd;
+ struct peer_capability_info *p;
+ u32 rates;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
+ memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
+
+ p = &cmd->peer_info;
+ p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
+ p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
+ p->ht_support = sta->ht_cap.ht_supported;
+ p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
+ p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
+ ((sta->ht_cap.ampdu_density & 7) << 2);
+ if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
+ rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
+ else
+ rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
+ legacy_rate_mask_to_array(p->legacy_rates, rates);
+ memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
+ p->interop = 1;
+ p->amsdu_enabled = 0;
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ if (!rc)
+ rc = p->station_id;
+ kfree(cmd);
+
+ return rc;
+}
+
+static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, u8 *addr)
+{
+ struct mwl8k_cmd_update_stadb *cmd;
+ int rc;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+
+ cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
+ cmd->header.length = cpu_to_le16(sizeof(*cmd));
+ cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
+ memcpy(cmd->peer_addr, addr, ETH_ALEN);
+
+ rc = mwl8k_post_cmd(hw, &cmd->header);
+ kfree(cmd);
+
+ return rc;
+}
+
+
+/*
+ * Interrupt handling.
+ */
+static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
+{
+ struct ieee80211_hw *hw = dev_id;
+ struct mwl8k_priv *priv = hw->priv;
+ u32 status;
+
+ status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
+ if (!status)
+ return IRQ_NONE;
+
+ if (status & MWL8K_A2H_INT_TX_DONE) {
+ status &= ~MWL8K_A2H_INT_TX_DONE;
+ tasklet_schedule(&priv->poll_tx_task);
+ }
+
+ if (status & MWL8K_A2H_INT_RX_READY) {
+ status &= ~MWL8K_A2H_INT_RX_READY;
+ tasklet_schedule(&priv->poll_rx_task);
+ }
+
+ if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
+ iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
+ priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
+
+ atomic_inc(&priv->watchdog_event_pending);
+ status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
+ ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
+ }
+
+ if (status)
+ iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
+
+ if (status & MWL8K_A2H_INT_OPC_DONE) {
+ if (priv->hostcmd_wait != NULL)
+ complete(priv->hostcmd_wait);
+ }
+
+ if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
+ if (!mutex_is_locked(&priv->fw_mutex) &&
+ priv->radio_on && priv->pending_tx_pkts)
+ mwl8k_tx_start(priv);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void mwl8k_tx_poll(unsigned long data)
+{
+ struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
+ struct mwl8k_priv *priv = hw->priv;
+ int limit;
+ int i;
+
+ limit = 32;
+
+ spin_lock_bh(&priv->tx_lock);
+
+ for (i = 0; i < mwl8k_tx_queues(priv); i++)
+ limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
+
+ if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
+ complete(priv->tx_wait);
+ priv->tx_wait = NULL;
+ }
+
+ spin_unlock_bh(&priv->tx_lock);
+
+ if (limit) {
+ writel(~MWL8K_A2H_INT_TX_DONE,
+ priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
+ } else {
+ tasklet_schedule(&priv->poll_tx_task);
+ }
+}
+
+static void mwl8k_rx_poll(unsigned long data)
+{
+ struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
+ struct mwl8k_priv *priv = hw->priv;
+ int limit;
+
+ limit = 32;
+ limit -= rxq_process(hw, 0, limit);
+ limit -= rxq_refill(hw, 0, limit);
+
+ if (limit) {
+ writel(~MWL8K_A2H_INT_RX_READY,
+ priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
+ } else {
+ tasklet_schedule(&priv->poll_rx_task);
+ }
+}
+
+
+/*
+ * Core driver operations.
+ */
+static void mwl8k_tx(struct ieee80211_hw *hw,
+ struct ieee80211_tx_control *control,
+ struct sk_buff *skb)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int index = skb_get_queue_mapping(skb);
+
+ if (!priv->radio_on) {
+ wiphy_debug(hw->wiphy,
+ "dropped TX frame since radio disabled\n");
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ mwl8k_txq_xmit(hw, index, control->sta, skb);
+}
+
+static int mwl8k_start(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int rc;
+
+ rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
+ IRQF_SHARED, MWL8K_NAME, hw);
+ if (rc) {
+ priv->irq = -1;
+ wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
+ return -EIO;
+ }
+ priv->irq = priv->pdev->irq;
+
+ /* Enable TX reclaim and RX tasklets. */
+ tasklet_enable(&priv->poll_tx_task);
+ tasklet_enable(&priv->poll_rx_task);
+
+ /* Enable interrupts */
+ iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
+ iowrite32(MWL8K_A2H_EVENTS,
+ priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
+
+ rc = mwl8k_fw_lock(hw);
+ if (!rc) {
+ rc = mwl8k_cmd_radio_enable(hw);
+
+ if (!priv->ap_fw) {
+ if (!rc)
+ rc = mwl8k_cmd_enable_sniffer(hw, 0);
+
+ if (!rc)
+ rc = mwl8k_cmd_set_pre_scan(hw);
+
+ if (!rc)
+ rc = mwl8k_cmd_set_post_scan(hw,
+ "\x00\x00\x00\x00\x00\x00");
+ }
+
+ if (!rc)
+ rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
+
+ if (!rc)
+ rc = mwl8k_cmd_set_wmm_mode(hw, 0);
+
+ mwl8k_fw_unlock(hw);
+ }
+
+ if (rc) {
+ iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
+ free_irq(priv->pdev->irq, hw);
+ priv->irq = -1;
+ tasklet_disable(&priv->poll_tx_task);
+ tasklet_disable(&priv->poll_rx_task);
+ } else {
+ ieee80211_wake_queues(hw);
+ }
+
+ return rc;
+}
+
+static void mwl8k_stop(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int i;
+
+ if (!priv->hw_restart_in_progress)
+ mwl8k_cmd_radio_disable(hw);
+
+ ieee80211_stop_queues(hw);
+
+ /* Disable interrupts */
+ iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
+ if (priv->irq != -1) {
+ free_irq(priv->pdev->irq, hw);
+ priv->irq = -1;
+ }
+
+ /* Stop finalize join worker */
+ cancel_work_sync(&priv->finalize_join_worker);
+ cancel_work_sync(&priv->watchdog_ba_handle);
+ if (priv->beacon_skb != NULL)
+ dev_kfree_skb(priv->beacon_skb);
+
+ /* Stop TX reclaim and RX tasklets. */
+ tasklet_disable(&priv->poll_tx_task);
+ tasklet_disable(&priv->poll_rx_task);
+
+ /* Return all skbs to mac80211 */
+ for (i = 0; i < mwl8k_tx_queues(priv); i++)
+ mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
+}
+
+static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
+
+static int mwl8k_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_vif *mwl8k_vif;
+ u32 macids_supported;
+ int macid, rc;
+ struct mwl8k_device_info *di;
+
+ /*
+ * Reject interface creation if sniffer mode is active, as
+ * STA operation is mutually exclusive with hardware sniffer
+ * mode. (Sniffer mode is only used on STA firmware.)
+ */
+ if (priv->sniffer_enabled) {
+ wiphy_info(hw->wiphy,
+ "unable to create STA interface because sniffer mode is enabled\n");
+ return -EINVAL;
+ }
+
+ di = priv->device_info;
+ switch (vif->type) {
+ case NL80211_IFTYPE_AP:
+ if (!priv->ap_fw && di->fw_image_ap) {
+ /* we must load the ap fw to meet this request */
+ if (!list_empty(&priv->vif_list))
+ return -EBUSY;
+ rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
+ if (rc)
+ return rc;
+ }
+ macids_supported = priv->ap_macids_supported;
+ break;
+ case NL80211_IFTYPE_STATION:
+ if (priv->ap_fw && di->fw_image_sta) {
+ if (!list_empty(&priv->vif_list)) {
+ wiphy_warn(hw->wiphy, "AP interface is running.\n"
+ "Adding STA interface for WDS");
+ } else {
+ /* we must load the sta fw to
+ * meet this request.
+ */
+ rc = mwl8k_reload_firmware(hw,
+ di->fw_image_sta);
+ if (rc)
+ return rc;
+ }
+ }
+ macids_supported = priv->sta_macids_supported;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ macid = ffs(macids_supported & ~priv->macids_used);
+ if (!macid--)
+ return -EBUSY;
+
+ /* Setup driver private area. */
+ mwl8k_vif = MWL8K_VIF(vif);
+ memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
+ mwl8k_vif->vif = vif;
+ mwl8k_vif->macid = macid;
+ mwl8k_vif->seqno = 0;
+ memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
+ mwl8k_vif->is_hw_crypto_enabled = false;
+
+ /* Set the mac address. */
+ mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
+
+ if (vif->type == NL80211_IFTYPE_AP)
+ mwl8k_cmd_set_new_stn_add_self(hw, vif);
+
+ priv->macids_used |= 1 << mwl8k_vif->macid;
+ list_add_tail(&mwl8k_vif->list, &priv->vif_list);
+
+ return 0;
+}
+
+static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
+{
+ /* Has ieee80211_restart_hw re-added the removed interfaces? */
+ if (!priv->macids_used)
+ return;
+
+ priv->macids_used &= ~(1 << vif->macid);
+ list_del(&vif->list);
+}
+
+static void mwl8k_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
+
+ if (vif->type == NL80211_IFTYPE_AP)
+ mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
+
+ mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
+
+ mwl8k_remove_vif(priv, mwl8k_vif);
+}
+
+static void mwl8k_hw_restart_work(struct work_struct *work)
+{
+ struct mwl8k_priv *priv =
+ container_of(work, struct mwl8k_priv, fw_reload);
+ struct ieee80211_hw *hw = priv->hw;
+ struct mwl8k_device_info *di;
+ int rc;
+
+ /* If some command is waiting for a response, clear it */
+ if (priv->hostcmd_wait != NULL) {
+ complete(priv->hostcmd_wait);
+ priv->hostcmd_wait = NULL;
+ }
+
+ priv->hw_restart_owner = current;
+ di = priv->device_info;
+ mwl8k_fw_lock(hw);
+
+ if (priv->ap_fw)
+ rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
+ else
+ rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
+
+ if (rc)
+ goto fail;
+
+ priv->hw_restart_owner = NULL;
+ priv->hw_restart_in_progress = false;
+
+ /*
+ * This unlock will wake up the queues and
+ * also opens the command path for other
+ * commands
+ */
+ mwl8k_fw_unlock(hw);
+
+ ieee80211_restart_hw(hw);
+
+ wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
+
+ return;
+fail:
+ mwl8k_fw_unlock(hw);
+
+ wiphy_err(hw->wiphy, "Firmware restart failed\n");
+}
+
+static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct ieee80211_conf *conf = &hw->conf;
+ struct mwl8k_priv *priv = hw->priv;
+ int rc;
+
+ rc = mwl8k_fw_lock(hw);
+ if (rc)
+ return rc;
+
+ if (conf->flags & IEEE80211_CONF_IDLE)
+ rc = mwl8k_cmd_radio_disable(hw);
+ else
+ rc = mwl8k_cmd_radio_enable(hw);
+ if (rc)
+ goto out;
+
+ if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+ rc = mwl8k_cmd_set_rf_channel(hw, conf);
+ if (rc)
+ goto out;
+ }
+
+ if (conf->power_level > 18)
+ conf->power_level = 18;
+
+ if (priv->ap_fw) {
+
+ if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
+ rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
+ if (rc)
+ goto out;
+ }
+
+
+ } else {
+ rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
+ if (rc)
+ goto out;
+ rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
+ }
+
+out:
+ mwl8k_fw_unlock(hw);
+
+ return rc;
+}
+
+static void
+mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info, u32 changed)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ u32 ap_legacy_rates = 0;
+ u8 ap_mcs_rates[16];
+ int rc;
+
+ if (mwl8k_fw_lock(hw))
+ return;
+
+ /*
+ * No need to capture a beacon if we're no longer associated.
+ */
+ if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
+ priv->capture_beacon = false;
+
+ /*
+ * Get the AP's legacy and MCS rates.
+ */
+ if (vif->bss_conf.assoc) {
+ struct ieee80211_sta *ap;
+
+ rcu_read_lock();
+
+ ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
+ if (ap == NULL) {
+ rcu_read_unlock();
+ goto out;
+ }
+
+ if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) {
+ ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
+ } else {
+ ap_legacy_rates =
+ ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
+ }
+ memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
+
+ rcu_read_unlock();
+
+ if (changed & BSS_CHANGED_ASSOC) {
+ if (!priv->ap_fw) {
+ rc = mwl8k_cmd_set_rate(hw, vif,
+ ap_legacy_rates,
+ ap_mcs_rates);
+ if (rc)
+ goto out;
+
+ rc = mwl8k_cmd_use_fixed_rate_sta(hw);
+ if (rc)
+ goto out;
+ } else {
+ int idx;
+ int rate;
+
+ /* Use AP firmware specific rate command.
+ */
+ idx = ffs(vif->bss_conf.basic_rates);
+ if (idx)
+ idx--;
+
+ if (hw->conf.chandef.chan->band ==
+ IEEE80211_BAND_2GHZ)
+ rate = mwl8k_rates_24[idx].hw_value;
+ else
+ rate = mwl8k_rates_50[idx].hw_value;
+
+ mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
+ }
+ }
+ }
+
+ if (changed & BSS_CHANGED_ERP_PREAMBLE) {
+ rc = mwl8k_set_radio_preamble(hw,
+ vif->bss_conf.use_short_preamble);
+ if (rc)
+ goto out;
+ }
+
+ if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
+ rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
+ if (rc)
+ goto out;
+ }
+
+ if (vif->bss_conf.assoc && !priv->ap_fw &&
+ (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
+ BSS_CHANGED_HT))) {
+ rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
+ if (rc)
+ goto out;
+ }
+
+ if (vif->bss_conf.assoc &&
+ (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
+ /*
+ * Finalize the join. Tell rx handler to process
+ * next beacon from our BSSID.
+ */
+ memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
+ priv->capture_beacon = true;
+ }
+
+out:
+ mwl8k_fw_unlock(hw);
+}
+
+static void
+mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info, u32 changed)
+{
+ int rc;
+
+ if (mwl8k_fw_lock(hw))
+ return;
+
+ if (changed & BSS_CHANGED_ERP_PREAMBLE) {
+ rc = mwl8k_set_radio_preamble(hw,
+ vif->bss_conf.use_short_preamble);
+ if (rc)
+ goto out;
+ }
+
+ if (changed & BSS_CHANGED_BASIC_RATES) {
+ int idx;
+ int rate;
+
+ /*
+ * Use lowest supported basic rate for multicasts
+ * and management frames (such as probe responses --
+ * beacons will always go out at 1 Mb/s).
+ */
+ idx = ffs(vif->bss_conf.basic_rates);
+ if (idx)
+ idx--;
+
+ if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
+ rate = mwl8k_rates_24[idx].hw_value;
+ else
+ rate = mwl8k_rates_50[idx].hw_value;
+
+ mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
+ }
+
+ if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
+ struct sk_buff *skb;
+
+ skb = ieee80211_beacon_get(hw, vif);
+ if (skb != NULL) {
+ mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
+ kfree_skb(skb);
+ }
+ }
+
+ if (changed & BSS_CHANGED_BEACON_ENABLED)
+ mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
+
+out:
+ mwl8k_fw_unlock(hw);
+}
+
+static void
+mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info, u32 changed)
+{
+ if (vif->type == NL80211_IFTYPE_STATION)
+ mwl8k_bss_info_changed_sta(hw, vif, info, changed);
+ if (vif->type == NL80211_IFTYPE_AP)
+ mwl8k_bss_info_changed_ap(hw, vif, info, changed);
+}
+
+static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
+ struct netdev_hw_addr_list *mc_list)
+{
+ struct mwl8k_cmd_pkt *cmd;
+
+ /*
+ * Synthesize and return a command packet that programs the
+ * hardware multicast address filter. At this point we don't
+ * know whether FIF_ALLMULTI is being requested, but if it is,
+ * we'll end up throwing this packet away and creating a new
+ * one in mwl8k_configure_filter().
+ */
+ cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
+
+ return (unsigned long)cmd;
+}
+
+static int
+mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *total_flags)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ /*
+ * Hardware sniffer mode is mutually exclusive with STA
+ * operation, so refuse to enable sniffer mode if a STA
+ * interface is active.
+ */
+ if (!list_empty(&priv->vif_list)) {
+ if (net_ratelimit())
+ wiphy_info(hw->wiphy,
+ "not enabling sniffer mode because STA interface is active\n");
+ return 0;
+ }
+
+ if (!priv->sniffer_enabled) {
+ if (mwl8k_cmd_enable_sniffer(hw, 1))
+ return 0;
+ priv->sniffer_enabled = true;
+ }
+
+ *total_flags &= FIF_ALLMULTI |
+ FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
+ FIF_OTHER_BSS;
+
+ return 1;
+}
+
+static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
+{
+ if (!list_empty(&priv->vif_list))
+ return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
+
+ return NULL;
+}
+
+static void mwl8k_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ u64 multicast)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
+
+ /*
+ * AP firmware doesn't allow fine-grained control over
+ * the receive filter.
+ */
+ if (priv->ap_fw) {
+ *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
+ kfree(cmd);
+ return;
+ }
+
+ /*
+ * Enable hardware sniffer mode if FIF_CONTROL or
+ * FIF_OTHER_BSS is requested.
+ */
+ if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
+ mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
+ kfree(cmd);
+ return;
+ }
+
+ /* Clear unsupported feature flags */
+ *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
+
+ if (mwl8k_fw_lock(hw)) {
+ kfree(cmd);
+ return;
+ }
+
+ if (priv->sniffer_enabled) {
+ mwl8k_cmd_enable_sniffer(hw, 0);
+ priv->sniffer_enabled = false;
+ }
+
+ if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
+ if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
+ /*
+ * Disable the BSS filter.
+ */
+ mwl8k_cmd_set_pre_scan(hw);
+ } else {
+ struct mwl8k_vif *mwl8k_vif;
+ const u8 *bssid;
+
+ /*
+ * Enable the BSS filter.
+ *
+ * If there is an active STA interface, use that
+ * interface's BSSID, otherwise use a dummy one
+ * (where the OUI part needs to be nonzero for
+ * the BSSID to be accepted by POST_SCAN).
+ */
+ mwl8k_vif = mwl8k_first_vif(priv);
+ if (mwl8k_vif != NULL)
+ bssid = mwl8k_vif->vif->bss_conf.bssid;
+ else
+ bssid = "\x01\x00\x00\x00\x00\x00";
+
+ mwl8k_cmd_set_post_scan(hw, bssid);
+ }
+ }
+
+ /*
+ * If FIF_ALLMULTI is being requested, throw away the command
+ * packet that ->prepare_multicast() built and replace it with
+ * a command packet that enables reception of all multicast
+ * packets.
+ */
+ if (*total_flags & FIF_ALLMULTI) {
+ kfree(cmd);
+ cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
+ }
+
+ if (cmd != NULL) {
+ mwl8k_post_cmd(hw, cmd);
+ kfree(cmd);
+ }
+
+ mwl8k_fw_unlock(hw);
+}
+
+static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+ return mwl8k_cmd_set_rts_threshold(hw, value);
+}
+
+static int mwl8k_sta_remove(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mwl8k_priv *priv = hw->priv;
+
+ if (priv->ap_fw)
+ return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
+ else
+ return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
+}
+
+static int mwl8k_sta_add(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int ret;
+ int i;
+ struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
+ struct ieee80211_key_conf *key;
+
+ if (!priv->ap_fw) {
+ ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
+ if (ret >= 0) {
+ MWL8K_STA(sta)->peer_id = ret;
+ if (sta->ht_cap.ht_supported)
+ MWL8K_STA(sta)->is_ampdu_allowed = true;
+ ret = 0;
+ }
+
+ } else {
+ ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
+ }
+
+ for (i = 0; i < NUM_WEP_KEYS; i++) {
+ key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
+ if (mwl8k_vif->wep_key_conf[i].enabled)
+ mwl8k_set_key(hw, SET_KEY, vif, sta, key);
+ }
+ return ret;
+}
+
+static int mwl8k_conf_tx(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, u16 queue,
+ const struct ieee80211_tx_queue_params *params)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int rc;
+
+ rc = mwl8k_fw_lock(hw);
+ if (!rc) {
+ BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
+ memcpy(&priv->wmm_params[queue], params, sizeof(*params));
+
+ if (!priv->wmm_enabled)
+ rc = mwl8k_cmd_set_wmm_mode(hw, 1);
+
+ if (!rc) {
+ int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
+ rc = mwl8k_cmd_set_edca_params(hw, q,
+ params->cw_min,
+ params->cw_max,
+ params->aifs,
+ params->txop);
+ }
+
+ mwl8k_fw_unlock(hw);
+ }
+
+ return rc;
+}
+
+static int mwl8k_get_stats(struct ieee80211_hw *hw,
+ struct ieee80211_low_level_stats *stats)
+{
+ return mwl8k_cmd_get_stat(hw, stats);
+}
+
+static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
+ struct survey_info *survey)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ struct ieee80211_conf *conf = &hw->conf;
+ struct ieee80211_supported_band *sband;
+
+ if (priv->ap_fw) {
+ sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
+
+ if (sband && idx >= sband->n_channels) {
+ idx -= sband->n_channels;
+ sband = NULL;
+ }
+
+ if (!sband)
+ sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
+
+ if (!sband || idx >= sband->n_channels)
+ return -ENOENT;
+
+ memcpy(survey, &priv->survey[idx], sizeof(*survey));
+ survey->channel = &sband->channels[idx];
+
+ return 0;
+ }
+
+ if (idx != 0)
+ return -ENOENT;
+
+ survey->channel = conf->chandef.chan;
+ survey->filled = SURVEY_INFO_NOISE_DBM;
+ survey->noise = priv->noise;
+
+ return 0;
+}
+
+#define MAX_AMPDU_ATTEMPTS 5
+
+static int
+mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ enum ieee80211_ampdu_mlme_action action,
+ struct ieee80211_sta *sta, u16 tid, u16 *ssn,
+ u8 buf_size, bool amsdu)
+{
+
+ int i, rc = 0;
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_ampdu_stream *stream;
+ u8 *addr = sta->addr, idx;
+ struct mwl8k_sta *sta_info = MWL8K_STA(sta);
+
+ if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION))
+ return -ENOTSUPP;
+
+ spin_lock(&priv->stream_lock);
+ stream = mwl8k_lookup_stream(hw, addr, tid);
+
+ switch (action) {
+ case IEEE80211_AMPDU_RX_START:
+ case IEEE80211_AMPDU_RX_STOP:
+ break;
+ case IEEE80211_AMPDU_TX_START:
+ /* By the time we get here the hw queues may contain outgoing
+ * packets for this RA/TID that are not part of this BA
+ * session. The hw will assign sequence numbers to these
+ * packets as they go out. So if we query the hw for its next
+ * sequence number and use that for the SSN here, it may end up
+ * being wrong, which will lead to sequence number mismatch at
+ * the recipient. To avoid this, we reset the sequence number
+ * to O for the first MPDU in this BA stream.
+ */
+ *ssn = 0;
+ if (stream == NULL) {
+ /* This means that somebody outside this driver called
+ * ieee80211_start_tx_ba_session. This is unexpected
+ * because we do our own rate control. Just warn and
+ * move on.
+ */
+ wiphy_warn(hw->wiphy, "Unexpected call to %s. "
+ "Proceeding anyway.\n", __func__);
+ stream = mwl8k_add_stream(hw, sta, tid);
+ }
+ if (stream == NULL) {
+ wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
+ rc = -EBUSY;
+ break;
+ }
+ stream->state = AMPDU_STREAM_IN_PROGRESS;
+
+ /* Release the lock before we do the time consuming stuff */
+ spin_unlock(&priv->stream_lock);
+ for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
+
+ /* Check if link is still valid */
+ if (!sta_info->is_ampdu_allowed) {
+ spin_lock(&priv->stream_lock);
+ mwl8k_remove_stream(hw, stream);
+ spin_unlock(&priv->stream_lock);
+ return -EBUSY;
+ }
+
+ rc = mwl8k_check_ba(hw, stream, vif);
+
+ /* If HW restart is in progress mwl8k_post_cmd will
+ * return -EBUSY. Avoid retrying mwl8k_check_ba in
+ * such cases
+ */
+ if (!rc || rc == -EBUSY)
+ break;
+ /*
+ * HW queues take time to be flushed, give them
+ * sufficient time
+ */
+
+ msleep(1000);
+ }
+ spin_lock(&priv->stream_lock);
+ if (rc) {
+ wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
+ " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
+ mwl8k_remove_stream(hw, stream);
+ rc = -EBUSY;
+ break;
+ }
+ ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
+ break;
+ case IEEE80211_AMPDU_TX_STOP_CONT:
+ case IEEE80211_AMPDU_TX_STOP_FLUSH:
+ case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
+ if (stream) {
+ if (stream->state == AMPDU_STREAM_ACTIVE) {
+ idx = stream->idx;
+ spin_unlock(&priv->stream_lock);
+ mwl8k_destroy_ba(hw, idx);
+ spin_lock(&priv->stream_lock);
+ }
+ mwl8k_remove_stream(hw, stream);
+ }
+ ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
+ break;
+ case IEEE80211_AMPDU_TX_OPERATIONAL:
+ BUG_ON(stream == NULL);
+ BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
+ spin_unlock(&priv->stream_lock);
+ rc = mwl8k_create_ba(hw, stream, buf_size, vif);
+ spin_lock(&priv->stream_lock);
+ if (!rc)
+ stream->state = AMPDU_STREAM_ACTIVE;
+ else {
+ idx = stream->idx;
+ spin_unlock(&priv->stream_lock);
+ mwl8k_destroy_ba(hw, idx);
+ spin_lock(&priv->stream_lock);
+ wiphy_debug(hw->wiphy,
+ "Failed adding stream for sta %pM tid %d\n",
+ addr, tid);
+ mwl8k_remove_stream(hw, stream);
+ }
+ break;
+
+ default:
+ rc = -ENOTSUPP;
+ }
+
+ spin_unlock(&priv->stream_lock);
+ return rc;
+}
+
+static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ const u8 *mac_addr)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ u8 tmp;
+
+ if (!priv->ap_fw)
+ return;
+
+ /* clear all stats */
+ priv->channel_time = 0;
+ ioread32(priv->regs + BBU_RXRDY_CNT_REG);
+ ioread32(priv->regs + NOK_CCA_CNT_REG);
+ mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
+
+ priv->sw_scan_start = true;
+}
+
+static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ u8 tmp;
+
+ if (!priv->ap_fw)
+ return;
+
+ priv->sw_scan_start = false;
+
+ /* clear all stats */
+ priv->channel_time = 0;
+ ioread32(priv->regs + BBU_RXRDY_CNT_REG);
+ ioread32(priv->regs + NOK_CCA_CNT_REG);
+ mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
+}
+
+static const struct ieee80211_ops mwl8k_ops = {
+ .tx = mwl8k_tx,
+ .start = mwl8k_start,
+ .stop = mwl8k_stop,
+ .add_interface = mwl8k_add_interface,
+ .remove_interface = mwl8k_remove_interface,
+ .config = mwl8k_config,
+ .bss_info_changed = mwl8k_bss_info_changed,
+ .prepare_multicast = mwl8k_prepare_multicast,
+ .configure_filter = mwl8k_configure_filter,
+ .set_key = mwl8k_set_key,
+ .set_rts_threshold = mwl8k_set_rts_threshold,
+ .sta_add = mwl8k_sta_add,
+ .sta_remove = mwl8k_sta_remove,
+ .conf_tx = mwl8k_conf_tx,
+ .get_stats = mwl8k_get_stats,
+ .get_survey = mwl8k_get_survey,
+ .ampdu_action = mwl8k_ampdu_action,
+ .sw_scan_start = mwl8k_sw_scan_start,
+ .sw_scan_complete = mwl8k_sw_scan_complete,
+};
+
+static void mwl8k_finalize_join_worker(struct work_struct *work)
+{
+ struct mwl8k_priv *priv =
+ container_of(work, struct mwl8k_priv, finalize_join_worker);
+ struct sk_buff *skb = priv->beacon_skb;
+ struct ieee80211_mgmt *mgmt = (void *)skb->data;
+ int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
+ const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
+ mgmt->u.beacon.variable, len);
+ int dtim_period = 1;
+
+ if (tim && tim[1] >= 2)
+ dtim_period = tim[3];
+
+ mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
+
+ dev_kfree_skb(skb);
+ priv->beacon_skb = NULL;
+}
+
+enum {
+ MWL8363 = 0,
+ MWL8687,
+ MWL8366,
+ MWL8764,
+};
+
+#define MWL8K_8366_AP_FW_API 3
+#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
+#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
+
+#define MWL8K_8764_AP_FW_API 1
+#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
+#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
+
+static struct mwl8k_device_info mwl8k_info_tbl[] = {
+ [MWL8363] = {
+ .part_name = "88w8363",
+ .helper_image = "mwl8k/helper_8363.fw",
+ .fw_image_sta = "mwl8k/fmimage_8363.fw",
+ },
+ [MWL8687] = {
+ .part_name = "88w8687",
+ .helper_image = "mwl8k/helper_8687.fw",
+ .fw_image_sta = "mwl8k/fmimage_8687.fw",
+ },
+ [MWL8366] = {
+ .part_name = "88w8366",
+ .helper_image = "mwl8k/helper_8366.fw",
+ .fw_image_sta = "mwl8k/fmimage_8366.fw",
+ .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
+ .fw_api_ap = MWL8K_8366_AP_FW_API,
+ .ap_rxd_ops = &rxd_ap_ops,
+ },
+ [MWL8764] = {
+ .part_name = "88w8764",
+ .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
+ .fw_api_ap = MWL8K_8764_AP_FW_API,
+ .ap_rxd_ops = &rxd_ap_ops,
+ },
+};
+
+MODULE_FIRMWARE("mwl8k/helper_8363.fw");
+MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
+MODULE_FIRMWARE("mwl8k/helper_8687.fw");
+MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
+MODULE_FIRMWARE("mwl8k/helper_8366.fw");
+MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
+MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
+
+static const struct pci_device_id mwl8k_pci_id_table[] = {
+ { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
+ { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
+ { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
+ { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
+ { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
+ { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
+ { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
+ { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
+ { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
+ { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
+ { },
+};
+MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
+
+static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
+{
+ int rc;
+ printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
+ "Trying alternative firmware %s\n", pci_name(priv->pdev),
+ priv->fw_pref, priv->fw_alt);
+ rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
+ if (rc) {
+ printk(KERN_ERR "%s: Error requesting alt fw %s\n",
+ pci_name(priv->pdev), priv->fw_alt);
+ return rc;
+ }
+ return 0;
+}
+
+static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
+static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
+{
+ struct mwl8k_priv *priv = context;
+ struct mwl8k_device_info *di = priv->device_info;
+ int rc;
+
+ switch (priv->fw_state) {
+ case FW_STATE_INIT:
+ if (!fw) {
+ printk(KERN_ERR "%s: Error requesting helper fw %s\n",
+ pci_name(priv->pdev), di->helper_image);
+ goto fail;
+ }
+ priv->fw_helper = fw;
+ rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
+ true);
+ if (rc && priv->fw_alt) {
+ rc = mwl8k_request_alt_fw(priv);
+ if (rc)
+ goto fail;
+ priv->fw_state = FW_STATE_LOADING_ALT;
+ } else if (rc)
+ goto fail;
+ else
+ priv->fw_state = FW_STATE_LOADING_PREF;
+ break;
+
+ case FW_STATE_LOADING_PREF:
+ if (!fw) {
+ if (priv->fw_alt) {
+ rc = mwl8k_request_alt_fw(priv);
+ if (rc)
+ goto fail;
+ priv->fw_state = FW_STATE_LOADING_ALT;
+ } else
+ goto fail;
+ } else {
+ priv->fw_ucode = fw;
+ rc = mwl8k_firmware_load_success(priv);
+ if (rc)
+ goto fail;
+ else
+ complete(&priv->firmware_loading_complete);
+ }
+ break;
+
+ case FW_STATE_LOADING_ALT:
+ if (!fw) {
+ printk(KERN_ERR "%s: Error requesting alt fw %s\n",
+ pci_name(priv->pdev), di->helper_image);
+ goto fail;
+ }
+ priv->fw_ucode = fw;
+ rc = mwl8k_firmware_load_success(priv);
+ if (rc)
+ goto fail;
+ else
+ complete(&priv->firmware_loading_complete);
+ break;
+
+ default:
+ printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
+ MWL8K_NAME, priv->fw_state);
+ BUG_ON(1);
+ }
+
+ return;
+
+fail:
+ priv->fw_state = FW_STATE_ERROR;
+ complete(&priv->firmware_loading_complete);
+ device_release_driver(&priv->pdev->dev);
+ mwl8k_release_firmware(priv);
+}
+
+#define MAX_RESTART_ATTEMPTS 1
+static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
+ bool nowait)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int rc;
+ int count = MAX_RESTART_ATTEMPTS;
+
+retry:
+ /* Reset firmware and hardware */
+ mwl8k_hw_reset(priv);
+
+ /* Ask userland hotplug daemon for the device firmware */
+ rc = mwl8k_request_firmware(priv, fw_image, nowait);
+ if (rc) {
+ wiphy_err(hw->wiphy, "Firmware files not found\n");
+ return rc;
+ }
+
+ if (nowait)
+ return rc;
+
+ /* Load firmware into hardware */
+ rc = mwl8k_load_firmware(hw);
+ if (rc)
+ wiphy_err(hw->wiphy, "Cannot start firmware\n");
+
+ /* Reclaim memory once firmware is successfully loaded */
+ mwl8k_release_firmware(priv);
+
+ if (rc && count) {
+ /* FW did not start successfully;
+ * lets try one more time
+ */
+ count--;
+ wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
+ msleep(20);
+ goto retry;
+ }
+
+ return rc;
+}
+
+static int mwl8k_init_txqs(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int rc = 0;
+ int i;
+
+ for (i = 0; i < mwl8k_tx_queues(priv); i++) {
+ rc = mwl8k_txq_init(hw, i);
+ if (rc)
+ break;
+ if (priv->ap_fw)
+ iowrite32(priv->txq[i].txd_dma,
+ priv->sram + priv->txq_offset[i]);
+ }
+ return rc;
+}
+
+/* initialize hw after successfully loading a firmware image */
+static int mwl8k_probe_hw(struct ieee80211_hw *hw)
+{
+ struct mwl8k_priv *priv = hw->priv;
+ int rc = 0;
+ int i;
+
+ if (priv->ap_fw) {
+ priv->rxd_ops = priv->device_info->ap_rxd_ops;
+ if (priv->rxd_ops == NULL) {
+ wiphy_err(hw->wiphy,
+ "Driver does not have AP firmware image support for this hardware\n");
+ rc = -ENOENT;
+ goto err_stop_firmware;
+ }
+ } else {
+ priv->rxd_ops = &rxd_sta_ops;
+ }
+
+ priv->sniffer_enabled = false;
+ priv->wmm_enabled = false;
+ priv->pending_tx_pkts = 0;
+ atomic_set(&priv->watchdog_event_pending, 0);
+
+ rc = mwl8k_rxq_init(hw, 0);
+ if (rc)
+ goto err_stop_firmware;
+ rxq_refill(hw, 0, INT_MAX);
+
+ /* For the sta firmware, we need to know the dma addresses of tx queues
+ * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
+ * prior to issuing this command. But for the AP case, we learn the
+ * total number of queues from the result CMD_GET_HW_SPEC, so for this
+ * case we must initialize the tx queues after.
+ */
+ priv->num_ampdu_queues = 0;
+ if (!priv->ap_fw) {
+ rc = mwl8k_init_txqs(hw);
+ if (rc)
+ goto err_free_queues;
+ }
+
+ iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
+ iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
+ iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
+ MWL8K_A2H_INT_BA_WATCHDOG,
+ priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
+ iowrite32(MWL8K_A2H_INT_OPC_DONE,
+ priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
+
+ rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
+ IRQF_SHARED, MWL8K_NAME, hw);
+ if (rc) {
+ wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
+ goto err_free_queues;
+ }
+
+ /*
+ * When hw restart is requested,
+ * mac80211 will take care of clearing
+ * the ampdu streams, so do not clear
+ * the ampdu state here
+ */
+ if (!priv->hw_restart_in_progress)
+ memset(priv->ampdu, 0, sizeof(priv->ampdu));
+
+ /*
+ * Temporarily enable interrupts. Initial firmware host
+ * commands use interrupts and avoid polling. Disable
+ * interrupts when done.
+ */
+ iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
+
+ /* Get config data, mac addrs etc */
+ if (priv->ap_fw) {
+ rc = mwl8k_cmd_get_hw_spec_ap(hw);
+ if (!rc)
+ rc = mwl8k_init_txqs(hw);
+ if (!rc)
+ rc = mwl8k_cmd_set_hw_spec(hw);
+ } else {
+ rc = mwl8k_cmd_get_hw_spec_sta(hw);
+ }
+ if (rc) {
+ wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
+ goto err_free_irq;
+ }
+
+ /* Turn radio off */
+ rc = mwl8k_cmd_radio_disable(hw);
+ if (rc) {
+ wiphy_err(hw->wiphy, "Cannot disable\n");
+ goto err_free_irq;
+ }
+
+ /* Clear MAC address */
+ rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
+ if (rc) {
+ wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
+ goto err_free_irq;
+ }
+
+ /* Configure Antennas */
+ rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
+ if (rc)
+ wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
+ rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
+ if (rc)
+ wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
+
+
+ /* Disable interrupts */
+ iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
+ free_irq(priv->pdev->irq, hw);
+
+ wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
+ priv->device_info->part_name,
+ priv->hw_rev, hw->wiphy->perm_addr,
+ priv->ap_fw ? "AP" : "STA",
+ (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
+ (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
+
+ return 0;
+
+err_free_irq:
+ iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
+ free_irq(priv->pdev->irq, hw);
+
+err_free_queues:
+ for (i = 0; i < mwl8k_tx_queues(priv); i++)
+ mwl8k_txq_deinit(hw, i);
+ mwl8k_rxq_deinit(hw, 0);
+
+err_stop_firmware:
+ mwl8k_hw_reset(priv);
+
+ return rc;
+}
+
+/*
+ * invoke mwl8k_reload_firmware to change the firmware image after the device
+ * has already been registered
+ */
+static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
+{
+ int i, rc = 0;
+ struct mwl8k_priv *priv = hw->priv;
+ struct mwl8k_vif *vif, *tmp_vif;
+
+ mwl8k_stop(hw);
+ mwl8k_rxq_deinit(hw, 0);
+
+ /*
+ * All the existing interfaces are re-added by the ieee80211_reconfig;
+ * which means driver should remove existing interfaces before calling
+ * ieee80211_restart_hw
+ */
+ if (priv->hw_restart_in_progress)
+ list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
+ mwl8k_remove_vif(priv, vif);
+
+ for (i = 0; i < mwl8k_tx_queues(priv); i++)
+ mwl8k_txq_deinit(hw, i);
+
+ rc = mwl8k_init_firmware(hw, fw_image, false);
+ if (rc)
+ goto fail;
+
+ rc = mwl8k_probe_hw(hw);
+ if (rc)
+ goto fail;
+
+ if (priv->hw_restart_in_progress)
+ return rc;
+
+ rc = mwl8k_start(hw);
+ if (rc)
+ goto fail;
+
+ rc = mwl8k_config(hw, ~0);
+ if (rc)
+ goto fail;
+
+ for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
+ rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
+ if (rc)
+ goto fail;
+ }
+
+ return rc;
+
+fail:
+ printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
+ return rc;
+}
+
+static const struct ieee80211_iface_limit ap_if_limits[] = {
+ { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
+ { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
+};
+
+static const struct ieee80211_iface_combination ap_if_comb = {
+ .limits = ap_if_limits,
+ .n_limits = ARRAY_SIZE(ap_if_limits),
+ .max_interfaces = 8,
+ .num_different_channels = 1,
+};
+
+
+static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
+{
+ struct ieee80211_hw *hw = priv->hw;
+ int i, rc;
+
+ rc = mwl8k_load_firmware(hw);
+ mwl8k_release_firmware(priv);
+ if (rc) {
+ wiphy_err(hw->wiphy, "Cannot start firmware\n");
+ return rc;
+ }
+
+ /*
+ * Extra headroom is the size of the required DMA header
+ * minus the size of the smallest 802.11 frame (CTS frame).
+ */
+ hw->extra_tx_headroom =
+ sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
+
+ hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
+
+ hw->queues = MWL8K_TX_WMM_QUEUES;
+
+ /* Set rssi values to dBm */
+ ieee80211_hw_set(hw, SIGNAL_DBM);
+ ieee80211_hw_set(hw, HAS_RATE_CONTROL);
+
+ /*
+ * Ask mac80211 to not to trigger PS mode
+ * based on PM bit of incoming frames.
+ */
+ if (priv->ap_fw)
+ ieee80211_hw_set(hw, AP_LINK_PS);
+
+ hw->vif_data_size = sizeof(struct mwl8k_vif);
+ hw->sta_data_size = sizeof(struct mwl8k_sta);
+
+ priv->macids_used = 0;
+ INIT_LIST_HEAD(&priv->vif_list);
+
+ /* Set default radio state and preamble */
+ priv->radio_on = false;
+ priv->radio_short_preamble = false;
+
+ /* Finalize join worker */
+ INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
+ /* Handle watchdog ba events */
+ INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
+ /* To reload the firmware if it crashes */
+ INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
+
+ /* TX reclaim and RX tasklets. */
+ tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
+ tasklet_disable(&priv->poll_tx_task);
+ tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
+ tasklet_disable(&priv->poll_rx_task);
+
+ /* Power management cookie */
+ priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
+ if (priv->cookie == NULL)
+ return -ENOMEM;
+
+ mutex_init(&priv->fw_mutex);
+ priv->fw_mutex_owner = NULL;
+ priv->fw_mutex_depth = 0;
+ priv->hostcmd_wait = NULL;
+
+ spin_lock_init(&priv->tx_lock);
+
+ spin_lock_init(&priv->stream_lock);
+
+ priv->tx_wait = NULL;
+
+ rc = mwl8k_probe_hw(hw);
+ if (rc)
+ goto err_free_cookie;
+
+ hw->wiphy->interface_modes = 0;
+
+ if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
+ hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
+ hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
+ hw->wiphy->iface_combinations = &ap_if_comb;
+ hw->wiphy->n_iface_combinations = 1;
+ }
+
+ if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
+ hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
+
+ rc = ieee80211_register_hw(hw);
+ if (rc) {
+ wiphy_err(hw->wiphy, "Cannot register device\n");
+ goto err_unprobe_hw;
+ }
+
+ return 0;
+
+err_unprobe_hw:
+ for (i = 0; i < mwl8k_tx_queues(priv); i++)
+ mwl8k_txq_deinit(hw, i);
+ mwl8k_rxq_deinit(hw, 0);
+
+err_free_cookie:
+ if (priv->cookie != NULL)
+ pci_free_consistent(priv->pdev, 4,
+ priv->cookie, priv->cookie_dma);
+
+ return rc;
+}
+static int mwl8k_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ static int printed_version;
+ struct ieee80211_hw *hw;
+ struct mwl8k_priv *priv;
+ struct mwl8k_device_info *di;
+ int rc;
+
+ if (!printed_version) {
+ printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
+ printed_version = 1;
+ }
+
+
+ rc = pci_enable_device(pdev);
+ if (rc) {
+ printk(KERN_ERR "%s: Cannot enable new PCI device\n",
+ MWL8K_NAME);
+ return rc;
+ }
+
+ rc = pci_request_regions(pdev, MWL8K_NAME);
+ if (rc) {
+ printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
+ MWL8K_NAME);
+ goto err_disable_device;
+ }
+
+ pci_set_master(pdev);
+
+
+ hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
+ if (hw == NULL) {
+ printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
+ rc = -ENOMEM;
+ goto err_free_reg;
+ }
+
+ SET_IEEE80211_DEV(hw, &pdev->dev);
+ pci_set_drvdata(pdev, hw);
+
+ priv = hw->priv;
+ priv->hw = hw;
+ priv->pdev = pdev;
+ priv->device_info = &mwl8k_info_tbl[id->driver_data];
+
+ if (id->driver_data == MWL8764)
+ priv->is_8764 = true;
+
+ priv->sram = pci_iomap(pdev, 0, 0x10000);
+ if (priv->sram == NULL) {
+ wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
+ rc = -EIO;
+ goto err_iounmap;
+ }
+
+ /*
+ * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
+ * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
+ */
+ priv->regs = pci_iomap(pdev, 1, 0x10000);
+ if (priv->regs == NULL) {
+ priv->regs = pci_iomap(pdev, 2, 0x10000);
+ if (priv->regs == NULL) {
+ wiphy_err(hw->wiphy, "Cannot map device registers\n");
+ rc = -EIO;
+ goto err_iounmap;
+ }
+ }
+
+ /*
+ * Choose the initial fw image depending on user input. If a second
+ * image is available, make it the alternative image that will be
+ * loaded if the first one fails.
+ */
+ init_completion(&priv->firmware_loading_complete);
+ di = priv->device_info;
+ if (ap_mode_default && di->fw_image_ap) {
+ priv->fw_pref = di->fw_image_ap;
+ priv->fw_alt = di->fw_image_sta;
+ } else if (!ap_mode_default && di->fw_image_sta) {
+ priv->fw_pref = di->fw_image_sta;
+ priv->fw_alt = di->fw_image_ap;
+ } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
+ printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
+ priv->fw_pref = di->fw_image_sta;
+ } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
+ printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
+ priv->fw_pref = di->fw_image_ap;
+ }
+ rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
+ if (rc)
+ goto err_stop_firmware;
+
+ priv->hw_restart_in_progress = false;
+
+ priv->running_bsses = 0;
+
+ return rc;
+
+err_stop_firmware:
+ mwl8k_hw_reset(priv);
+
+err_iounmap:
+ if (priv->regs != NULL)
+ pci_iounmap(pdev, priv->regs);
+
+ if (priv->sram != NULL)
+ pci_iounmap(pdev, priv->sram);
+
+ ieee80211_free_hw(hw);
+
+err_free_reg:
+ pci_release_regions(pdev);
+
+err_disable_device:
+ pci_disable_device(pdev);
+
+ return rc;
+}
+
+static void mwl8k_remove(struct pci_dev *pdev)
+{
+ struct ieee80211_hw *hw = pci_get_drvdata(pdev);
+ struct mwl8k_priv *priv;
+ int i;
+
+ if (hw == NULL)
+ return;
+ priv = hw->priv;
+
+ wait_for_completion(&priv->firmware_loading_complete);
+
+ if (priv->fw_state == FW_STATE_ERROR) {
+ mwl8k_hw_reset(priv);
+ goto unmap;
+ }
+
+ ieee80211_stop_queues(hw);
+
+ ieee80211_unregister_hw(hw);
+
+ /* Remove TX reclaim and RX tasklets. */
+ tasklet_kill(&priv->poll_tx_task);
+ tasklet_kill(&priv->poll_rx_task);
+
+ /* Stop hardware */
+ mwl8k_hw_reset(priv);
+
+ /* Return all skbs to mac80211 */
+ for (i = 0; i < mwl8k_tx_queues(priv); i++)
+ mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
+
+ for (i = 0; i < mwl8k_tx_queues(priv); i++)
+ mwl8k_txq_deinit(hw, i);
+
+ mwl8k_rxq_deinit(hw, 0);
+
+ pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
+
+unmap:
+ pci_iounmap(pdev, priv->regs);
+ pci_iounmap(pdev, priv->sram);
+ ieee80211_free_hw(hw);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+}
+
+static struct pci_driver mwl8k_driver = {
+ .name = MWL8K_NAME,
+ .id_table = mwl8k_pci_id_table,
+ .probe = mwl8k_probe,
+ .remove = mwl8k_remove,
+};
+
+module_pci_driver(mwl8k_driver);
+
+MODULE_DESCRIPTION(MWL8K_DESC);
+MODULE_VERSION(MWL8K_VERSION);
+MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
+MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * drivers/net/wireless/mwl8k.c
- * Driver for Marvell TOPDOG 802.11 Wireless cards
- *
- * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/completion.h>
-#include <linux/etherdevice.h>
-#include <linux/slab.h>
-#include <net/mac80211.h>
-#include <linux/moduleparam.h>
-#include <linux/firmware.h>
-#include <linux/workqueue.h>
-
-#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
-#define MWL8K_NAME KBUILD_MODNAME
-#define MWL8K_VERSION "0.13"
-
-/* Module parameters */
-static bool ap_mode_default;
-module_param(ap_mode_default, bool, 0);
-MODULE_PARM_DESC(ap_mode_default,
- "Set to 1 to make ap mode the default instead of sta mode");
-
-/* Register definitions */
-#define MWL8K_HIU_GEN_PTR 0x00000c10
-#define MWL8K_MODE_STA 0x0000005a
-#define MWL8K_MODE_AP 0x000000a5
-#define MWL8K_HIU_INT_CODE 0x00000c14
-#define MWL8K_FWSTA_READY 0xf0f1f2f4
-#define MWL8K_FWAP_READY 0xf1f2f4a5
-#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
-#define MWL8K_HIU_SCRATCH 0x00000c40
-
-/* Host->device communications */
-#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
-#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
-#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
-#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
-#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
-#define MWL8K_H2A_INT_DUMMY (1 << 20)
-#define MWL8K_H2A_INT_RESET (1 << 15)
-#define MWL8K_H2A_INT_DOORBELL (1 << 1)
-#define MWL8K_H2A_INT_PPA_READY (1 << 0)
-
-/* Device->host communications */
-#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
-#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
-#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
-#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
-#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
-#define MWL8K_A2H_INT_DUMMY (1 << 20)
-#define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
-#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
-#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
-#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
-#define MWL8K_A2H_INT_RADIO_ON (1 << 6)
-#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
-#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
-#define MWL8K_A2H_INT_OPC_DONE (1 << 2)
-#define MWL8K_A2H_INT_RX_READY (1 << 1)
-#define MWL8K_A2H_INT_TX_DONE (1 << 0)
-
-/* HW micro second timer register
- * located at offset 0xA600. This
- * will be used to timestamp tx
- * packets.
- */
-
-#define MWL8K_HW_TIMER_REGISTER 0x0000a600
-#define BBU_RXRDY_CNT_REG 0x0000a860
-#define NOK_CCA_CNT_REG 0x0000a6a0
-#define BBU_AVG_NOISE_VAL 0x67
-
-#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
- MWL8K_A2H_INT_CHNL_SWITCHED | \
- MWL8K_A2H_INT_QUEUE_EMPTY | \
- MWL8K_A2H_INT_RADAR_DETECT | \
- MWL8K_A2H_INT_RADIO_ON | \
- MWL8K_A2H_INT_RADIO_OFF | \
- MWL8K_A2H_INT_MAC_EVENT | \
- MWL8K_A2H_INT_OPC_DONE | \
- MWL8K_A2H_INT_RX_READY | \
- MWL8K_A2H_INT_TX_DONE | \
- MWL8K_A2H_INT_BA_WATCHDOG)
-
-#define MWL8K_RX_QUEUES 1
-#define MWL8K_TX_WMM_QUEUES 4
-#define MWL8K_MAX_AMPDU_QUEUES 8
-#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
-#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
-
-/* txpriorities are mapped with hw queues.
- * Each hw queue has a txpriority.
- */
-#define TOTAL_HW_TX_QUEUES 8
-
-/* Each HW queue can have one AMPDU stream.
- * But, because one of the hw queue is reserved,
- * maximum AMPDU queues that can be created are
- * one short of total tx queues.
- */
-#define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
-
-#define MWL8K_NUM_CHANS 18
-
-struct rxd_ops {
- int rxd_size;
- void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
- void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
- int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
- __le16 *qos, s8 *noise);
-};
-
-struct mwl8k_device_info {
- char *part_name;
- char *helper_image;
- char *fw_image_sta;
- char *fw_image_ap;
- struct rxd_ops *ap_rxd_ops;
- u32 fw_api_ap;
-};
-
-struct mwl8k_rx_queue {
- int rxd_count;
-
- /* hw receives here */
- int head;
-
- /* refill descs here */
- int tail;
-
- void *rxd;
- dma_addr_t rxd_dma;
- struct {
- struct sk_buff *skb;
- DEFINE_DMA_UNMAP_ADDR(dma);
- } *buf;
-};
-
-struct mwl8k_tx_queue {
- /* hw transmits here */
- int head;
-
- /* sw appends here */
- int tail;
-
- unsigned int len;
- struct mwl8k_tx_desc *txd;
- dma_addr_t txd_dma;
- struct sk_buff **skb;
-};
-
-enum {
- AMPDU_NO_STREAM,
- AMPDU_STREAM_NEW,
- AMPDU_STREAM_IN_PROGRESS,
- AMPDU_STREAM_ACTIVE,
-};
-
-struct mwl8k_ampdu_stream {
- struct ieee80211_sta *sta;
- u8 tid;
- u8 state;
- u8 idx;
-};
-
-struct mwl8k_priv {
- struct ieee80211_hw *hw;
- struct pci_dev *pdev;
- int irq;
-
- struct mwl8k_device_info *device_info;
-
- void __iomem *sram;
- void __iomem *regs;
-
- /* firmware */
- const struct firmware *fw_helper;
- const struct firmware *fw_ucode;
-
- /* hardware/firmware parameters */
- bool ap_fw;
- struct rxd_ops *rxd_ops;
- struct ieee80211_supported_band band_24;
- struct ieee80211_channel channels_24[14];
- struct ieee80211_rate rates_24[13];
- struct ieee80211_supported_band band_50;
- struct ieee80211_channel channels_50[4];
- struct ieee80211_rate rates_50[8];
- u32 ap_macids_supported;
- u32 sta_macids_supported;
-
- /* Ampdu stream information */
- u8 num_ampdu_queues;
- spinlock_t stream_lock;
- struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
- struct work_struct watchdog_ba_handle;
-
- /* firmware access */
- struct mutex fw_mutex;
- struct task_struct *fw_mutex_owner;
- struct task_struct *hw_restart_owner;
- int fw_mutex_depth;
- struct completion *hostcmd_wait;
-
- atomic_t watchdog_event_pending;
-
- /* lock held over TX and TX reap */
- spinlock_t tx_lock;
-
- /* TX quiesce completion, protected by fw_mutex and tx_lock */
- struct completion *tx_wait;
-
- /* List of interfaces. */
- u32 macids_used;
- struct list_head vif_list;
-
- /* power management status cookie from firmware */
- u32 *cookie;
- dma_addr_t cookie_dma;
-
- u16 num_mcaddrs;
- u8 hw_rev;
- u32 fw_rev;
- u32 caps;
-
- /*
- * Running count of TX packets in flight, to avoid
- * iterating over the transmit rings each time.
- */
- int pending_tx_pkts;
-
- struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
- struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
- u32 txq_offset[MWL8K_MAX_TX_QUEUES];
-
- bool radio_on;
- bool radio_short_preamble;
- bool sniffer_enabled;
- bool wmm_enabled;
-
- /* XXX need to convert this to handle multiple interfaces */
- bool capture_beacon;
- u8 capture_bssid[ETH_ALEN];
- struct sk_buff *beacon_skb;
-
- /*
- * This FJ worker has to be global as it is scheduled from the
- * RX handler. At this point we don't know which interface it
- * belongs to until the list of bssids waiting to complete join
- * is checked.
- */
- struct work_struct finalize_join_worker;
-
- /* Tasklet to perform TX reclaim. */
- struct tasklet_struct poll_tx_task;
-
- /* Tasklet to perform RX. */
- struct tasklet_struct poll_rx_task;
-
- /* Most recently reported noise in dBm */
- s8 noise;
-
- /*
- * preserve the queue configurations so they can be restored if/when
- * the firmware image is swapped.
- */
- struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
-
- /* To perform the task of reloading the firmware */
- struct work_struct fw_reload;
- bool hw_restart_in_progress;
-
- /* async firmware loading state */
- unsigned fw_state;
- char *fw_pref;
- char *fw_alt;
- bool is_8764;
- struct completion firmware_loading_complete;
-
- /* bitmap of running BSSes */
- u32 running_bsses;
-
- /* ACS related */
- bool sw_scan_start;
- struct ieee80211_channel *acs_chan;
- unsigned long channel_time;
- struct survey_info survey[MWL8K_NUM_CHANS];
-};
-
-#define MAX_WEP_KEY_LEN 13
-#define NUM_WEP_KEYS 4
-
-/* Per interface specific private data */
-struct mwl8k_vif {
- struct list_head list;
- struct ieee80211_vif *vif;
-
- /* Firmware macid for this vif. */
- int macid;
-
- /* Non AMPDU sequence number assigned by driver. */
- u16 seqno;
-
- /* Saved WEP keys */
- struct {
- u8 enabled;
- u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
- } wep_key_conf[NUM_WEP_KEYS];
-
- /* BSSID */
- u8 bssid[ETH_ALEN];
-
- /* A flag to indicate is HW crypto is enabled for this bssid */
- bool is_hw_crypto_enabled;
-};
-#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
-#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
-
-struct tx_traffic_info {
- u32 start_time;
- u32 pkts;
-};
-
-#define MWL8K_MAX_TID 8
-struct mwl8k_sta {
- /* Index into station database. Returned by UPDATE_STADB. */
- u8 peer_id;
- u8 is_ampdu_allowed;
- struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
-};
-#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
-
-static const struct ieee80211_channel mwl8k_channels_24[] = {
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
-};
-
-static const struct ieee80211_rate mwl8k_rates_24[] = {
- { .bitrate = 10, .hw_value = 2, },
- { .bitrate = 20, .hw_value = 4, },
- { .bitrate = 55, .hw_value = 11, },
- { .bitrate = 110, .hw_value = 22, },
- { .bitrate = 220, .hw_value = 44, },
- { .bitrate = 60, .hw_value = 12, },
- { .bitrate = 90, .hw_value = 18, },
- { .bitrate = 120, .hw_value = 24, },
- { .bitrate = 180, .hw_value = 36, },
- { .bitrate = 240, .hw_value = 48, },
- { .bitrate = 360, .hw_value = 72, },
- { .bitrate = 480, .hw_value = 96, },
- { .bitrate = 540, .hw_value = 108, },
-};
-
-static const struct ieee80211_channel mwl8k_channels_50[] = {
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
-};
-
-static const struct ieee80211_rate mwl8k_rates_50[] = {
- { .bitrate = 60, .hw_value = 12, },
- { .bitrate = 90, .hw_value = 18, },
- { .bitrate = 120, .hw_value = 24, },
- { .bitrate = 180, .hw_value = 36, },
- { .bitrate = 240, .hw_value = 48, },
- { .bitrate = 360, .hw_value = 72, },
- { .bitrate = 480, .hw_value = 96, },
- { .bitrate = 540, .hw_value = 108, },
-};
-
-/* Set or get info from Firmware */
-#define MWL8K_CMD_GET 0x0000
-#define MWL8K_CMD_SET 0x0001
-#define MWL8K_CMD_SET_LIST 0x0002
-
-/* Firmware command codes */
-#define MWL8K_CMD_CODE_DNLD 0x0001
-#define MWL8K_CMD_GET_HW_SPEC 0x0003
-#define MWL8K_CMD_SET_HW_SPEC 0x0004
-#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
-#define MWL8K_CMD_GET_STAT 0x0014
-#define MWL8K_CMD_BBP_REG_ACCESS 0x001a
-#define MWL8K_CMD_RADIO_CONTROL 0x001c
-#define MWL8K_CMD_RF_TX_POWER 0x001e
-#define MWL8K_CMD_TX_POWER 0x001f
-#define MWL8K_CMD_RF_ANTENNA 0x0020
-#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
-#define MWL8K_CMD_SET_PRE_SCAN 0x0107
-#define MWL8K_CMD_SET_POST_SCAN 0x0108
-#define MWL8K_CMD_SET_RF_CHANNEL 0x010a
-#define MWL8K_CMD_SET_AID 0x010d
-#define MWL8K_CMD_SET_RATE 0x0110
-#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
-#define MWL8K_CMD_RTS_THRESHOLD 0x0113
-#define MWL8K_CMD_SET_SLOT 0x0114
-#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
-#define MWL8K_CMD_SET_WMM_MODE 0x0123
-#define MWL8K_CMD_MIMO_CONFIG 0x0125
-#define MWL8K_CMD_USE_FIXED_RATE 0x0126
-#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
-#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
-#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
-#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
-#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
-#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
-#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
-#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
-#define MWL8K_CMD_UPDATE_STADB 0x1123
-#define MWL8K_CMD_BASTREAM 0x1125
-
-static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
-{
- u16 command = le16_to_cpu(cmd);
-
-#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
- snprintf(buf, bufsize, "%s", #x);\
- return buf;\
- } while (0)
- switch (command & ~0x8000) {
- MWL8K_CMDNAME(CODE_DNLD);
- MWL8K_CMDNAME(GET_HW_SPEC);
- MWL8K_CMDNAME(SET_HW_SPEC);
- MWL8K_CMDNAME(MAC_MULTICAST_ADR);
- MWL8K_CMDNAME(GET_STAT);
- MWL8K_CMDNAME(RADIO_CONTROL);
- MWL8K_CMDNAME(RF_TX_POWER);
- MWL8K_CMDNAME(TX_POWER);
- MWL8K_CMDNAME(RF_ANTENNA);
- MWL8K_CMDNAME(SET_BEACON);
- MWL8K_CMDNAME(SET_PRE_SCAN);
- MWL8K_CMDNAME(SET_POST_SCAN);
- MWL8K_CMDNAME(SET_RF_CHANNEL);
- MWL8K_CMDNAME(SET_AID);
- MWL8K_CMDNAME(SET_RATE);
- MWL8K_CMDNAME(SET_FINALIZE_JOIN);
- MWL8K_CMDNAME(RTS_THRESHOLD);
- MWL8K_CMDNAME(SET_SLOT);
- MWL8K_CMDNAME(SET_EDCA_PARAMS);
- MWL8K_CMDNAME(SET_WMM_MODE);
- MWL8K_CMDNAME(MIMO_CONFIG);
- MWL8K_CMDNAME(USE_FIXED_RATE);
- MWL8K_CMDNAME(ENABLE_SNIFFER);
- MWL8K_CMDNAME(SET_MAC_ADDR);
- MWL8K_CMDNAME(SET_RATEADAPT_MODE);
- MWL8K_CMDNAME(BSS_START);
- MWL8K_CMDNAME(SET_NEW_STN);
- MWL8K_CMDNAME(UPDATE_ENCRYPTION);
- MWL8K_CMDNAME(UPDATE_STADB);
- MWL8K_CMDNAME(BASTREAM);
- MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
- default:
- snprintf(buf, bufsize, "0x%x", cmd);
- }
-#undef MWL8K_CMDNAME
-
- return buf;
-}
-
-/* Hardware and firmware reset */
-static void mwl8k_hw_reset(struct mwl8k_priv *priv)
-{
- iowrite32(MWL8K_H2A_INT_RESET,
- priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
- iowrite32(MWL8K_H2A_INT_RESET,
- priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
- msleep(20);
-}
-
-/* Release fw image */
-static void mwl8k_release_fw(const struct firmware **fw)
-{
- if (*fw == NULL)
- return;
- release_firmware(*fw);
- *fw = NULL;
-}
-
-static void mwl8k_release_firmware(struct mwl8k_priv *priv)
-{
- mwl8k_release_fw(&priv->fw_ucode);
- mwl8k_release_fw(&priv->fw_helper);
-}
-
-/* states for asynchronous f/w loading */
-static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
-enum {
- FW_STATE_INIT = 0,
- FW_STATE_LOADING_PREF,
- FW_STATE_LOADING_ALT,
- FW_STATE_ERROR,
-};
-
-/* Request fw image */
-static int mwl8k_request_fw(struct mwl8k_priv *priv,
- const char *fname, const struct firmware **fw,
- bool nowait)
-{
- /* release current image */
- if (*fw != NULL)
- mwl8k_release_fw(fw);
-
- if (nowait)
- return request_firmware_nowait(THIS_MODULE, 1, fname,
- &priv->pdev->dev, GFP_KERNEL,
- priv, mwl8k_fw_state_machine);
- else
- return request_firmware(fw, fname, &priv->pdev->dev);
-}
-
-static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
- bool nowait)
-{
- struct mwl8k_device_info *di = priv->device_info;
- int rc;
-
- if (di->helper_image != NULL) {
- if (nowait)
- rc = mwl8k_request_fw(priv, di->helper_image,
- &priv->fw_helper, true);
- else
- rc = mwl8k_request_fw(priv, di->helper_image,
- &priv->fw_helper, false);
- if (rc)
- printk(KERN_ERR "%s: Error requesting helper fw %s\n",
- pci_name(priv->pdev), di->helper_image);
-
- if (rc || nowait)
- return rc;
- }
-
- if (nowait) {
- /*
- * if we get here, no helper image is needed. Skip the
- * FW_STATE_INIT state.
- */
- priv->fw_state = FW_STATE_LOADING_PREF;
- rc = mwl8k_request_fw(priv, fw_image,
- &priv->fw_ucode,
- true);
- } else
- rc = mwl8k_request_fw(priv, fw_image,
- &priv->fw_ucode, false);
- if (rc) {
- printk(KERN_ERR "%s: Error requesting firmware file %s\n",
- pci_name(priv->pdev), fw_image);
- mwl8k_release_fw(&priv->fw_helper);
- return rc;
- }
-
- return 0;
-}
-
-struct mwl8k_cmd_pkt {
- __le16 code;
- __le16 length;
- __u8 seq_num;
- __u8 macid;
- __le16 result;
- char payload[0];
-} __packed;
-
-/*
- * Firmware loading.
- */
-static int
-mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
-{
- void __iomem *regs = priv->regs;
- dma_addr_t dma_addr;
- int loops;
-
- dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
- if (pci_dma_mapping_error(priv->pdev, dma_addr))
- return -ENOMEM;
-
- iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
- iowrite32(0, regs + MWL8K_HIU_INT_CODE);
- iowrite32(MWL8K_H2A_INT_DOORBELL,
- regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
- iowrite32(MWL8K_H2A_INT_DUMMY,
- regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
-
- loops = 1000;
- do {
- u32 int_code;
- if (priv->is_8764) {
- int_code = ioread32(regs +
- MWL8K_HIU_H2A_INTERRUPT_STATUS);
- if (int_code == 0)
- break;
- } else {
- int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
- if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
- iowrite32(0, regs + MWL8K_HIU_INT_CODE);
- break;
- }
- }
- cond_resched();
- udelay(1);
- } while (--loops);
-
- pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
-
- return loops ? 0 : -ETIMEDOUT;
-}
-
-static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
- const u8 *data, size_t length)
-{
- struct mwl8k_cmd_pkt *cmd;
- int done;
- int rc = 0;
-
- cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
- cmd->seq_num = 0;
- cmd->macid = 0;
- cmd->result = 0;
-
- done = 0;
- while (length) {
- int block_size = length > 256 ? 256 : length;
-
- memcpy(cmd->payload, data + done, block_size);
- cmd->length = cpu_to_le16(block_size);
-
- rc = mwl8k_send_fw_load_cmd(priv, cmd,
- sizeof(*cmd) + block_size);
- if (rc)
- break;
-
- done += block_size;
- length -= block_size;
- }
-
- if (!rc) {
- cmd->length = 0;
- rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
- }
-
- kfree(cmd);
-
- return rc;
-}
-
-static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
- const u8 *data, size_t length)
-{
- unsigned char *buffer;
- int may_continue, rc = 0;
- u32 done, prev_block_size;
-
- buffer = kmalloc(1024, GFP_KERNEL);
- if (buffer == NULL)
- return -ENOMEM;
-
- done = 0;
- prev_block_size = 0;
- may_continue = 1000;
- while (may_continue > 0) {
- u32 block_size;
-
- block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
- if (block_size & 1) {
- block_size &= ~1;
- may_continue--;
- } else {
- done += prev_block_size;
- length -= prev_block_size;
- }
-
- if (block_size > 1024 || block_size > length) {
- rc = -EOVERFLOW;
- break;
- }
-
- if (length == 0) {
- rc = 0;
- break;
- }
-
- if (block_size == 0) {
- rc = -EPROTO;
- may_continue--;
- udelay(1);
- continue;
- }
-
- prev_block_size = block_size;
- memcpy(buffer, data + done, block_size);
-
- rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
- if (rc)
- break;
- }
-
- if (!rc && length != 0)
- rc = -EREMOTEIO;
-
- kfree(buffer);
-
- return rc;
-}
-
-static int mwl8k_load_firmware(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- const struct firmware *fw = priv->fw_ucode;
- int rc;
- int loops;
-
- if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
- const struct firmware *helper = priv->fw_helper;
-
- if (helper == NULL) {
- printk(KERN_ERR "%s: helper image needed but none "
- "given\n", pci_name(priv->pdev));
- return -EINVAL;
- }
-
- rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
- if (rc) {
- printk(KERN_ERR "%s: unable to load firmware "
- "helper image\n", pci_name(priv->pdev));
- return rc;
- }
- msleep(20);
-
- rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
- } else {
- if (priv->is_8764)
- rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
- else
- rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
- }
-
- if (rc) {
- printk(KERN_ERR "%s: unable to load firmware image\n",
- pci_name(priv->pdev));
- return rc;
- }
-
- iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
-
- loops = 500000;
- do {
- u32 ready_code;
-
- ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
- if (ready_code == MWL8K_FWAP_READY) {
- priv->ap_fw = true;
- break;
- } else if (ready_code == MWL8K_FWSTA_READY) {
- priv->ap_fw = false;
- break;
- }
-
- cond_resched();
- udelay(1);
- } while (--loops);
-
- return loops ? 0 : -ETIMEDOUT;
-}
-
-
-/* DMA header used by firmware and hardware. */
-struct mwl8k_dma_data {
- __le16 fwlen;
- struct ieee80211_hdr wh;
- char data[0];
-} __packed;
-
-/* Routines to add/remove DMA header from skb. */
-static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
-{
- struct mwl8k_dma_data *tr;
- int hdrlen;
-
- tr = (struct mwl8k_dma_data *)skb->data;
- hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
-
- if (hdrlen != sizeof(tr->wh)) {
- if (ieee80211_is_data_qos(tr->wh.frame_control)) {
- memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
- *((__le16 *)(tr->data - 2)) = qos;
- } else {
- memmove(tr->data - hdrlen, &tr->wh, hdrlen);
- }
- }
-
- if (hdrlen != sizeof(*tr))
- skb_pull(skb, sizeof(*tr) - hdrlen);
-}
-
-#define REDUCED_TX_HEADROOM 8
-
-static void
-mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
- int head_pad, int tail_pad)
-{
- struct ieee80211_hdr *wh;
- int hdrlen;
- int reqd_hdrlen;
- struct mwl8k_dma_data *tr;
-
- /*
- * Add a firmware DMA header; the firmware requires that we
- * present a 2-byte payload length followed by a 4-address
- * header (without QoS field), followed (optionally) by any
- * WEP/ExtIV header (but only filled in for CCMP).
- */
- wh = (struct ieee80211_hdr *)skb->data;
-
- hdrlen = ieee80211_hdrlen(wh->frame_control);
-
- /*
- * Check if skb_resize is required because of
- * tx_headroom adjustment.
- */
- if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
- + REDUCED_TX_HEADROOM))) {
- if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
-
- wiphy_err(priv->hw->wiphy,
- "Failed to reallocate TX buffer\n");
- return;
- }
- skb->truesize += REDUCED_TX_HEADROOM;
- }
-
- reqd_hdrlen = sizeof(*tr) + head_pad;
-
- if (hdrlen != reqd_hdrlen)
- skb_push(skb, reqd_hdrlen - hdrlen);
-
- if (ieee80211_is_data_qos(wh->frame_control))
- hdrlen -= IEEE80211_QOS_CTL_LEN;
-
- tr = (struct mwl8k_dma_data *)skb->data;
- if (wh != &tr->wh)
- memmove(&tr->wh, wh, hdrlen);
- if (hdrlen != sizeof(tr->wh))
- memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
-
- /*
- * Firmware length is the length of the fully formed "802.11
- * payload". That is, everything except for the 802.11 header.
- * This includes all crypto material including the MIC.
- */
- tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
-}
-
-static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
- struct sk_buff *skb)
-{
- struct ieee80211_hdr *wh;
- struct ieee80211_tx_info *tx_info;
- struct ieee80211_key_conf *key_conf;
- int data_pad;
- int head_pad = 0;
-
- wh = (struct ieee80211_hdr *)skb->data;
-
- tx_info = IEEE80211_SKB_CB(skb);
-
- key_conf = NULL;
- if (ieee80211_is_data(wh->frame_control))
- key_conf = tx_info->control.hw_key;
-
- /*
- * Make sure the packet header is in the DMA header format (4-address
- * without QoS), and add head & tail padding when HW crypto is enabled.
- *
- * We have the following trailer padding requirements:
- * - WEP: 4 trailer bytes (ICV)
- * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
- * - CCMP: 8 trailer bytes (MIC)
- */
- data_pad = 0;
- if (key_conf != NULL) {
- head_pad = key_conf->iv_len;
- switch (key_conf->cipher) {
- case WLAN_CIPHER_SUITE_WEP40:
- case WLAN_CIPHER_SUITE_WEP104:
- data_pad = 4;
- break;
- case WLAN_CIPHER_SUITE_TKIP:
- data_pad = 12;
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- data_pad = 8;
- break;
- }
- }
- mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
-}
-
-/*
- * Packet reception for 88w8366/88w8764 AP firmware.
- */
-struct mwl8k_rxd_ap {
- __le16 pkt_len;
- __u8 sq2;
- __u8 rate;
- __le32 pkt_phys_addr;
- __le32 next_rxd_phys_addr;
- __le16 qos_control;
- __le16 htsig2;
- __le32 hw_rssi_info;
- __le32 hw_noise_floor_info;
- __u8 noise_floor;
- __u8 pad0[3];
- __u8 rssi;
- __u8 rx_status;
- __u8 channel;
- __u8 rx_ctrl;
-} __packed;
-
-#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80
-#define MWL8K_AP_RATE_INFO_40MHZ 0x40
-#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
-
-#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80
-
-/* 8366/8764 AP rx_status bits */
-#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
-#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
-#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
-#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
-#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
-
-static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
-{
- struct mwl8k_rxd_ap *rxd = _rxd;
-
- rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
- rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
-}
-
-static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
-{
- struct mwl8k_rxd_ap *rxd = _rxd;
-
- rxd->pkt_len = cpu_to_le16(len);
- rxd->pkt_phys_addr = cpu_to_le32(addr);
- wmb();
- rxd->rx_ctrl = 0;
-}
-
-static int
-mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
- __le16 *qos, s8 *noise)
-{
- struct mwl8k_rxd_ap *rxd = _rxd;
-
- if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
- return -1;
- rmb();
-
- memset(status, 0, sizeof(*status));
-
- status->signal = -rxd->rssi;
- *noise = -rxd->noise_floor;
-
- if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
- status->flag |= RX_FLAG_HT;
- if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
- status->flag |= RX_FLAG_40MHZ;
- status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
- } else {
- int i;
-
- for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
- if (mwl8k_rates_24[i].hw_value == rxd->rate) {
- status->rate_idx = i;
- break;
- }
- }
- }
-
- if (rxd->channel > 14) {
- status->band = IEEE80211_BAND_5GHZ;
- if (!(status->flag & RX_FLAG_HT))
- status->rate_idx -= 5;
- } else {
- status->band = IEEE80211_BAND_2GHZ;
- }
- status->freq = ieee80211_channel_to_frequency(rxd->channel,
- status->band);
-
- *qos = rxd->qos_control;
-
- if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
- (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
- (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
- status->flag |= RX_FLAG_MMIC_ERROR;
-
- return le16_to_cpu(rxd->pkt_len);
-}
-
-static struct rxd_ops rxd_ap_ops = {
- .rxd_size = sizeof(struct mwl8k_rxd_ap),
- .rxd_init = mwl8k_rxd_ap_init,
- .rxd_refill = mwl8k_rxd_ap_refill,
- .rxd_process = mwl8k_rxd_ap_process,
-};
-
-/*
- * Packet reception for STA firmware.
- */
-struct mwl8k_rxd_sta {
- __le16 pkt_len;
- __u8 link_quality;
- __u8 noise_level;
- __le32 pkt_phys_addr;
- __le32 next_rxd_phys_addr;
- __le16 qos_control;
- __le16 rate_info;
- __le32 pad0[4];
- __u8 rssi;
- __u8 channel;
- __le16 pad1;
- __u8 rx_ctrl;
- __u8 rx_status;
- __u8 pad2[2];
-} __packed;
-
-#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
-#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
-#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
-#define MWL8K_STA_RATE_INFO_40MHZ 0x0004
-#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
-#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
-
-#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
-#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
-/* ICV=0 or MIC=1 */
-#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
-/* Key is uploaded only in failure case */
-#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
-
-static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
-{
- struct mwl8k_rxd_sta *rxd = _rxd;
-
- rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
- rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
-}
-
-static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
-{
- struct mwl8k_rxd_sta *rxd = _rxd;
-
- rxd->pkt_len = cpu_to_le16(len);
- rxd->pkt_phys_addr = cpu_to_le32(addr);
- wmb();
- rxd->rx_ctrl = 0;
-}
-
-static int
-mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
- __le16 *qos, s8 *noise)
-{
- struct mwl8k_rxd_sta *rxd = _rxd;
- u16 rate_info;
-
- if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
- return -1;
- rmb();
-
- rate_info = le16_to_cpu(rxd->rate_info);
-
- memset(status, 0, sizeof(*status));
-
- status->signal = -rxd->rssi;
- *noise = -rxd->noise_level;
- status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
- status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
-
- if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
- status->flag |= RX_FLAG_SHORTPRE;
- if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
- status->flag |= RX_FLAG_40MHZ;
- if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
- status->flag |= RX_FLAG_SHORT_GI;
- if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
- status->flag |= RX_FLAG_HT;
-
- if (rxd->channel > 14) {
- status->band = IEEE80211_BAND_5GHZ;
- if (!(status->flag & RX_FLAG_HT))
- status->rate_idx -= 5;
- } else {
- status->band = IEEE80211_BAND_2GHZ;
- }
- status->freq = ieee80211_channel_to_frequency(rxd->channel,
- status->band);
-
- *qos = rxd->qos_control;
- if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
- (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
- status->flag |= RX_FLAG_MMIC_ERROR;
-
- return le16_to_cpu(rxd->pkt_len);
-}
-
-static struct rxd_ops rxd_sta_ops = {
- .rxd_size = sizeof(struct mwl8k_rxd_sta),
- .rxd_init = mwl8k_rxd_sta_init,
- .rxd_refill = mwl8k_rxd_sta_refill,
- .rxd_process = mwl8k_rxd_sta_process,
-};
-
-
-#define MWL8K_RX_DESCS 256
-#define MWL8K_RX_MAXSZ 3800
-
-static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_rx_queue *rxq = priv->rxq + index;
- int size;
- int i;
-
- rxq->rxd_count = 0;
- rxq->head = 0;
- rxq->tail = 0;
-
- size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
-
- rxq->rxd = pci_zalloc_consistent(priv->pdev, size, &rxq->rxd_dma);
- if (rxq->rxd == NULL) {
- wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
- return -ENOMEM;
- }
-
- rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
- if (rxq->buf == NULL) {
- pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
- return -ENOMEM;
- }
-
- for (i = 0; i < MWL8K_RX_DESCS; i++) {
- int desc_size;
- void *rxd;
- int nexti;
- dma_addr_t next_dma_addr;
-
- desc_size = priv->rxd_ops->rxd_size;
- rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
-
- nexti = i + 1;
- if (nexti == MWL8K_RX_DESCS)
- nexti = 0;
- next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
-
- priv->rxd_ops->rxd_init(rxd, next_dma_addr);
- }
-
- return 0;
-}
-
-static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_rx_queue *rxq = priv->rxq + index;
- int refilled;
-
- refilled = 0;
- while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
- struct sk_buff *skb;
- dma_addr_t addr;
- int rx;
- void *rxd;
-
- skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
- if (skb == NULL)
- break;
-
- addr = pci_map_single(priv->pdev, skb->data,
- MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
-
- rxq->rxd_count++;
- rx = rxq->tail++;
- if (rxq->tail == MWL8K_RX_DESCS)
- rxq->tail = 0;
- rxq->buf[rx].skb = skb;
- dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
-
- rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
- priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
-
- refilled++;
- }
-
- return refilled;
-}
-
-/* Must be called only when the card's reception is completely halted */
-static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_rx_queue *rxq = priv->rxq + index;
- int i;
-
- if (rxq->rxd == NULL)
- return;
-
- for (i = 0; i < MWL8K_RX_DESCS; i++) {
- if (rxq->buf[i].skb != NULL) {
- pci_unmap_single(priv->pdev,
- dma_unmap_addr(&rxq->buf[i], dma),
- MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
- dma_unmap_addr_set(&rxq->buf[i], dma, 0);
-
- kfree_skb(rxq->buf[i].skb);
- rxq->buf[i].skb = NULL;
- }
- }
-
- kfree(rxq->buf);
- rxq->buf = NULL;
-
- pci_free_consistent(priv->pdev,
- MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
- rxq->rxd, rxq->rxd_dma);
- rxq->rxd = NULL;
-}
-
-
-/*
- * Scan a list of BSSIDs to process for finalize join.
- * Allows for extension to process multiple BSSIDs.
- */
-static inline int
-mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
-{
- return priv->capture_beacon &&
- ieee80211_is_beacon(wh->frame_control) &&
- ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
-}
-
-static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
- struct sk_buff *skb)
-{
- struct mwl8k_priv *priv = hw->priv;
-
- priv->capture_beacon = false;
- eth_zero_addr(priv->capture_bssid);
-
- /*
- * Use GFP_ATOMIC as rxq_process is called from
- * the primary interrupt handler, memory allocation call
- * must not sleep.
- */
- priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
- if (priv->beacon_skb != NULL)
- ieee80211_queue_work(hw, &priv->finalize_join_worker);
-}
-
-static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
- u8 *bssid)
-{
- struct mwl8k_vif *mwl8k_vif;
-
- list_for_each_entry(mwl8k_vif,
- vif_list, list) {
- if (memcmp(bssid, mwl8k_vif->bssid,
- ETH_ALEN) == 0)
- return mwl8k_vif;
- }
-
- return NULL;
-}
-
-static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_vif *mwl8k_vif = NULL;
- struct mwl8k_rx_queue *rxq = priv->rxq + index;
- int processed;
-
- processed = 0;
- while (rxq->rxd_count && limit--) {
- struct sk_buff *skb;
- void *rxd;
- int pkt_len;
- struct ieee80211_rx_status status;
- struct ieee80211_hdr *wh;
- __le16 qos;
-
- skb = rxq->buf[rxq->head].skb;
- if (skb == NULL)
- break;
-
- rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
-
- pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
- &priv->noise);
- if (pkt_len < 0)
- break;
-
- rxq->buf[rxq->head].skb = NULL;
-
- pci_unmap_single(priv->pdev,
- dma_unmap_addr(&rxq->buf[rxq->head], dma),
- MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
- dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
-
- rxq->head++;
- if (rxq->head == MWL8K_RX_DESCS)
- rxq->head = 0;
-
- rxq->rxd_count--;
-
- wh = &((struct mwl8k_dma_data *)skb->data)->wh;
-
- /*
- * Check for a pending join operation. Save a
- * copy of the beacon and schedule a tasklet to
- * send a FINALIZE_JOIN command to the firmware.
- */
- if (mwl8k_capture_bssid(priv, (void *)skb->data))
- mwl8k_save_beacon(hw, skb);
-
- if (ieee80211_has_protected(wh->frame_control)) {
-
- /* Check if hw crypto has been enabled for
- * this bss. If yes, set the status flags
- * accordingly
- */
- mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
- wh->addr1);
-
- if (mwl8k_vif != NULL &&
- mwl8k_vif->is_hw_crypto_enabled) {
- /*
- * When MMIC ERROR is encountered
- * by the firmware, payload is
- * dropped and only 32 bytes of
- * mwl8k Firmware header is sent
- * to the host.
- *
- * We need to add four bytes of
- * key information. In it
- * MAC80211 expects keyidx set to
- * 0 for triggering Counter
- * Measure of MMIC failure.
- */
- if (status.flag & RX_FLAG_MMIC_ERROR) {
- struct mwl8k_dma_data *tr;
- tr = (struct mwl8k_dma_data *)skb->data;
- memset((void *)&(tr->data), 0, 4);
- pkt_len += 4;
- }
-
- if (!ieee80211_is_auth(wh->frame_control))
- status.flag |= RX_FLAG_IV_STRIPPED |
- RX_FLAG_DECRYPTED |
- RX_FLAG_MMIC_STRIPPED;
- }
- }
-
- skb_put(skb, pkt_len);
- mwl8k_remove_dma_header(skb, qos);
- memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
- ieee80211_rx_irqsafe(hw, skb);
-
- processed++;
- }
-
- return processed;
-}
-
-
-/*
- * Packet transmission.
- */
-
-#define MWL8K_TXD_STATUS_OK 0x00000001
-#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
-#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
-#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
-#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
-
-#define MWL8K_QOS_QLEN_UNSPEC 0xff00
-#define MWL8K_QOS_ACK_POLICY_MASK 0x0060
-#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
-#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
-#define MWL8K_QOS_EOSP 0x0010
-
-struct mwl8k_tx_desc {
- __le32 status;
- __u8 data_rate;
- __u8 tx_priority;
- __le16 qos_control;
- __le32 pkt_phys_addr;
- __le16 pkt_len;
- __u8 dest_MAC_addr[ETH_ALEN];
- __le32 next_txd_phys_addr;
- __le32 timestamp;
- __le16 rate_info;
- __u8 peer_id;
- __u8 tx_frag_cnt;
-} __packed;
-
-#define MWL8K_TX_DESCS 128
-
-static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_tx_queue *txq = priv->txq + index;
- int size;
- int i;
-
- txq->len = 0;
- txq->head = 0;
- txq->tail = 0;
-
- size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
-
- txq->txd = pci_zalloc_consistent(priv->pdev, size, &txq->txd_dma);
- if (txq->txd == NULL) {
- wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
- return -ENOMEM;
- }
-
- txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
- if (txq->skb == NULL) {
- pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
- return -ENOMEM;
- }
-
- for (i = 0; i < MWL8K_TX_DESCS; i++) {
- struct mwl8k_tx_desc *tx_desc;
- int nexti;
-
- tx_desc = txq->txd + i;
- nexti = (i + 1) % MWL8K_TX_DESCS;
-
- tx_desc->status = 0;
- tx_desc->next_txd_phys_addr =
- cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
- }
-
- return 0;
-}
-
-static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
-{
- iowrite32(MWL8K_H2A_INT_PPA_READY,
- priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
- iowrite32(MWL8K_H2A_INT_DUMMY,
- priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
- ioread32(priv->regs + MWL8K_HIU_INT_CODE);
-}
-
-static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- int i;
-
- for (i = 0; i < mwl8k_tx_queues(priv); i++) {
- struct mwl8k_tx_queue *txq = priv->txq + i;
- int fw_owned = 0;
- int drv_owned = 0;
- int unused = 0;
- int desc;
-
- for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
- struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
- u32 status;
-
- status = le32_to_cpu(tx_desc->status);
- if (status & MWL8K_TXD_STATUS_FW_OWNED)
- fw_owned++;
- else
- drv_owned++;
-
- if (tx_desc->pkt_len == 0)
- unused++;
- }
-
- wiphy_err(hw->wiphy,
- "txq[%d] len=%d head=%d tail=%d "
- "fw_owned=%d drv_owned=%d unused=%d\n",
- i,
- txq->len, txq->head, txq->tail,
- fw_owned, drv_owned, unused);
- }
-}
-
-/*
- * Must be called with priv->fw_mutex held and tx queues stopped.
- */
-#define MWL8K_TX_WAIT_TIMEOUT_MS 5000
-
-static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- DECLARE_COMPLETION_ONSTACK(tx_wait);
- int retry;
- int rc;
-
- might_sleep();
-
- /* Since fw restart is in progress, allow only the firmware
- * commands from the restart code and block the other
- * commands since they are going to fail in any case since
- * the firmware has crashed
- */
- if (priv->hw_restart_in_progress) {
- if (priv->hw_restart_owner == current)
- return 0;
- else
- return -EBUSY;
- }
-
- if (atomic_read(&priv->watchdog_event_pending))
- return 0;
-
- /*
- * The TX queues are stopped at this point, so this test
- * doesn't need to take ->tx_lock.
- */
- if (!priv->pending_tx_pkts)
- return 0;
-
- retry = 1;
- rc = 0;
-
- spin_lock_bh(&priv->tx_lock);
- priv->tx_wait = &tx_wait;
- while (!rc) {
- int oldcount;
- unsigned long timeout;
-
- oldcount = priv->pending_tx_pkts;
-
- spin_unlock_bh(&priv->tx_lock);
- timeout = wait_for_completion_timeout(&tx_wait,
- msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
-
- if (atomic_read(&priv->watchdog_event_pending)) {
- spin_lock_bh(&priv->tx_lock);
- priv->tx_wait = NULL;
- spin_unlock_bh(&priv->tx_lock);
- return 0;
- }
-
- spin_lock_bh(&priv->tx_lock);
-
- if (timeout || !priv->pending_tx_pkts) {
- WARN_ON(priv->pending_tx_pkts);
- if (retry)
- wiphy_notice(hw->wiphy, "tx rings drained\n");
- break;
- }
-
- if (retry) {
- mwl8k_tx_start(priv);
- retry = 0;
- continue;
- }
-
- if (priv->pending_tx_pkts < oldcount) {
- wiphy_notice(hw->wiphy,
- "waiting for tx rings to drain (%d -> %d pkts)\n",
- oldcount, priv->pending_tx_pkts);
- retry = 1;
- continue;
- }
-
- priv->tx_wait = NULL;
-
- wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
- MWL8K_TX_WAIT_TIMEOUT_MS);
- mwl8k_dump_tx_rings(hw);
- priv->hw_restart_in_progress = true;
- ieee80211_queue_work(hw, &priv->fw_reload);
-
- rc = -ETIMEDOUT;
- }
- priv->tx_wait = NULL;
- spin_unlock_bh(&priv->tx_lock);
-
- return rc;
-}
-
-#define MWL8K_TXD_SUCCESS(status) \
- ((status) & (MWL8K_TXD_STATUS_OK | \
- MWL8K_TXD_STATUS_OK_RETRY | \
- MWL8K_TXD_STATUS_OK_MORE_RETRY))
-
-static int mwl8k_tid_queue_mapping(u8 tid)
-{
- BUG_ON(tid > 7);
-
- switch (tid) {
- case 0:
- case 3:
- return IEEE80211_AC_BE;
- case 1:
- case 2:
- return IEEE80211_AC_BK;
- case 4:
- case 5:
- return IEEE80211_AC_VI;
- case 6:
- case 7:
- return IEEE80211_AC_VO;
- default:
- return -1;
- }
-}
-
-/* The firmware will fill in the rate information
- * for each packet that gets queued in the hardware
- * and these macros will interpret that info.
- */
-
-#define RI_FORMAT(a) (a & 0x0001)
-#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
-
-static int
-mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_tx_queue *txq = priv->txq + index;
- int processed;
-
- processed = 0;
- while (txq->len > 0 && limit--) {
- int tx;
- struct mwl8k_tx_desc *tx_desc;
- unsigned long addr;
- int size;
- struct sk_buff *skb;
- struct ieee80211_tx_info *info;
- u32 status;
- struct ieee80211_sta *sta;
- struct mwl8k_sta *sta_info = NULL;
- u16 rate_info;
- struct ieee80211_hdr *wh;
-
- tx = txq->head;
- tx_desc = txq->txd + tx;
-
- status = le32_to_cpu(tx_desc->status);
-
- if (status & MWL8K_TXD_STATUS_FW_OWNED) {
- if (!force)
- break;
- tx_desc->status &=
- ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
- }
-
- txq->head = (tx + 1) % MWL8K_TX_DESCS;
- BUG_ON(txq->len == 0);
- txq->len--;
- priv->pending_tx_pkts--;
-
- addr = le32_to_cpu(tx_desc->pkt_phys_addr);
- size = le16_to_cpu(tx_desc->pkt_len);
- skb = txq->skb[tx];
- txq->skb[tx] = NULL;
-
- BUG_ON(skb == NULL);
- pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
-
- mwl8k_remove_dma_header(skb, tx_desc->qos_control);
-
- wh = (struct ieee80211_hdr *) skb->data;
-
- /* Mark descriptor as unused */
- tx_desc->pkt_phys_addr = 0;
- tx_desc->pkt_len = 0;
-
- info = IEEE80211_SKB_CB(skb);
- if (ieee80211_is_data(wh->frame_control)) {
- rcu_read_lock();
- sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
- wh->addr2);
- if (sta) {
- sta_info = MWL8K_STA(sta);
- BUG_ON(sta_info == NULL);
- rate_info = le16_to_cpu(tx_desc->rate_info);
- /* If rate is < 6.5 Mpbs for an ht station
- * do not form an ampdu. If the station is a
- * legacy station (format = 0), do not form an
- * ampdu
- */
- if (RI_RATE_ID_MCS(rate_info) < 1 ||
- RI_FORMAT(rate_info) == 0) {
- sta_info->is_ampdu_allowed = false;
- } else {
- sta_info->is_ampdu_allowed = true;
- }
- }
- rcu_read_unlock();
- }
-
- ieee80211_tx_info_clear_status(info);
-
- /* Rate control is happening in the firmware.
- * Ensure no tx rate is being reported.
- */
- info->status.rates[0].idx = -1;
- info->status.rates[0].count = 1;
-
- if (MWL8K_TXD_SUCCESS(status))
- info->flags |= IEEE80211_TX_STAT_ACK;
-
- ieee80211_tx_status_irqsafe(hw, skb);
-
- processed++;
- }
-
- return processed;
-}
-
-/* must be called only when the card's transmit is completely halted */
-static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_tx_queue *txq = priv->txq + index;
-
- if (txq->txd == NULL)
- return;
-
- mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
-
- kfree(txq->skb);
- txq->skb = NULL;
-
- pci_free_consistent(priv->pdev,
- MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
- txq->txd, txq->txd_dma);
- txq->txd = NULL;
-}
-
-/* caller must hold priv->stream_lock when calling the stream functions */
-static struct mwl8k_ampdu_stream *
-mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
-{
- struct mwl8k_ampdu_stream *stream;
- struct mwl8k_priv *priv = hw->priv;
- int i;
-
- for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
- stream = &priv->ampdu[i];
- if (stream->state == AMPDU_NO_STREAM) {
- stream->sta = sta;
- stream->state = AMPDU_STREAM_NEW;
- stream->tid = tid;
- stream->idx = i;
- wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
- sta->addr, tid);
- return stream;
- }
- }
- return NULL;
-}
-
-static int
-mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
-{
- int ret;
-
- /* if the stream has already been started, don't start it again */
- if (stream->state != AMPDU_STREAM_NEW)
- return 0;
- ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
- if (ret)
- wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
- "%d\n", stream->sta->addr, stream->tid, ret);
- else
- wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
- stream->sta->addr, stream->tid);
- return ret;
-}
-
-static void
-mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
-{
- wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
- stream->tid);
- memset(stream, 0, sizeof(*stream));
-}
-
-static struct mwl8k_ampdu_stream *
-mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
-{
- struct mwl8k_priv *priv = hw->priv;
- int i;
-
- for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
- struct mwl8k_ampdu_stream *stream;
- stream = &priv->ampdu[i];
- if (stream->state == AMPDU_NO_STREAM)
- continue;
- if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
- stream->tid == tid)
- return stream;
- }
- return NULL;
-}
-
-#define MWL8K_AMPDU_PACKET_THRESHOLD 64
-static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
-{
- struct mwl8k_sta *sta_info = MWL8K_STA(sta);
- struct tx_traffic_info *tx_stats;
-
- BUG_ON(tid >= MWL8K_MAX_TID);
- tx_stats = &sta_info->tx_stats[tid];
-
- return sta_info->is_ampdu_allowed &&
- tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
-}
-
-static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
-{
- struct mwl8k_sta *sta_info = MWL8K_STA(sta);
- struct tx_traffic_info *tx_stats;
-
- BUG_ON(tid >= MWL8K_MAX_TID);
- tx_stats = &sta_info->tx_stats[tid];
-
- if (tx_stats->start_time == 0)
- tx_stats->start_time = jiffies;
-
- /* reset the packet count after each second elapses. If the number of
- * packets ever exceeds the ampdu_min_traffic threshold, we will allow
- * an ampdu stream to be started.
- */
- if (jiffies - tx_stats->start_time > HZ) {
- tx_stats->pkts = 0;
- tx_stats->start_time = 0;
- } else
- tx_stats->pkts++;
-}
-
-/* The hardware ampdu queues start from 5.
- * txpriorities for ampdu queues are
- * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
- * and queue 3 is lowest (queue 4 is reserved)
- */
-#define BA_QUEUE 5
-
-static void
-mwl8k_txq_xmit(struct ieee80211_hw *hw,
- int index,
- struct ieee80211_sta *sta,
- struct sk_buff *skb)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct ieee80211_tx_info *tx_info;
- struct mwl8k_vif *mwl8k_vif;
- struct ieee80211_hdr *wh;
- struct mwl8k_tx_queue *txq;
- struct mwl8k_tx_desc *tx;
- dma_addr_t dma;
- u32 txstatus;
- u8 txdatarate;
- u16 qos;
- int txpriority;
- u8 tid = 0;
- struct mwl8k_ampdu_stream *stream = NULL;
- bool start_ba_session = false;
- bool mgmtframe = false;
- struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
- bool eapol_frame = false;
-
- wh = (struct ieee80211_hdr *)skb->data;
- if (ieee80211_is_data_qos(wh->frame_control))
- qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
- else
- qos = 0;
-
- if (skb->protocol == cpu_to_be16(ETH_P_PAE))
- eapol_frame = true;
-
- if (ieee80211_is_mgmt(wh->frame_control))
- mgmtframe = true;
-
- if (priv->ap_fw)
- mwl8k_encapsulate_tx_frame(priv, skb);
- else
- mwl8k_add_dma_header(priv, skb, 0, 0);
-
- wh = &((struct mwl8k_dma_data *)skb->data)->wh;
-
- tx_info = IEEE80211_SKB_CB(skb);
- mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
-
- if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
- wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
- wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
- mwl8k_vif->seqno += 0x10;
- }
-
- /* Setup firmware control bit fields for each frame type. */
- txstatus = 0;
- txdatarate = 0;
- if (ieee80211_is_mgmt(wh->frame_control) ||
- ieee80211_is_ctl(wh->frame_control)) {
- txdatarate = 0;
- qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
- } else if (ieee80211_is_data(wh->frame_control)) {
- txdatarate = 1;
- if (is_multicast_ether_addr(wh->addr1))
- txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
-
- qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
- if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
- qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
- else
- qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
- }
-
- /* Queue ADDBA request in the respective data queue. While setting up
- * the ampdu stream, mac80211 queues further packets for that
- * particular ra/tid pair. However, packets piled up in the hardware
- * for that ra/tid pair will still go out. ADDBA request and the
- * related data packets going out from different queues asynchronously
- * will cause a shift in the receiver window which might result in
- * ampdu packets getting dropped at the receiver after the stream has
- * been setup.
- */
- if (unlikely(ieee80211_is_action(wh->frame_control) &&
- mgmt->u.action.category == WLAN_CATEGORY_BACK &&
- mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
- priv->ap_fw)) {
- u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
- tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
- index = mwl8k_tid_queue_mapping(tid);
- }
-
- txpriority = index;
-
- if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
- ieee80211_is_data_qos(wh->frame_control)) {
- tid = qos & 0xf;
- mwl8k_tx_count_packet(sta, tid);
- spin_lock(&priv->stream_lock);
- stream = mwl8k_lookup_stream(hw, sta->addr, tid);
- if (stream != NULL) {
- if (stream->state == AMPDU_STREAM_ACTIVE) {
- WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
- txpriority = (BA_QUEUE + stream->idx) %
- TOTAL_HW_TX_QUEUES;
- if (stream->idx <= 1)
- index = stream->idx +
- MWL8K_TX_WMM_QUEUES;
-
- } else if (stream->state == AMPDU_STREAM_NEW) {
- /* We get here if the driver sends us packets
- * after we've initiated a stream, but before
- * our ampdu_action routine has been called
- * with IEEE80211_AMPDU_TX_START to get the SSN
- * for the ADDBA request. So this packet can
- * go out with no risk of sequence number
- * mismatch. No special handling is required.
- */
- } else {
- /* Drop packets that would go out after the
- * ADDBA request was sent but before the ADDBA
- * response is received. If we don't do this,
- * the recipient would probably receive it
- * after the ADDBA request with SSN 0. This
- * will cause the recipient's BA receive window
- * to shift, which would cause the subsequent
- * packets in the BA stream to be discarded.
- * mac80211 queues our packets for us in this
- * case, so this is really just a safety check.
- */
- wiphy_warn(hw->wiphy,
- "Cannot send packet while ADDBA "
- "dialog is underway.\n");
- spin_unlock(&priv->stream_lock);
- dev_kfree_skb(skb);
- return;
- }
- } else {
- /* Defer calling mwl8k_start_stream so that the current
- * skb can go out before the ADDBA request. This
- * prevents sequence number mismatch at the recepient
- * as described above.
- */
- if (mwl8k_ampdu_allowed(sta, tid)) {
- stream = mwl8k_add_stream(hw, sta, tid);
- if (stream != NULL)
- start_ba_session = true;
- }
- }
- spin_unlock(&priv->stream_lock);
- } else {
- qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
- qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
- }
-
- dma = pci_map_single(priv->pdev, skb->data,
- skb->len, PCI_DMA_TODEVICE);
-
- if (pci_dma_mapping_error(priv->pdev, dma)) {
- wiphy_debug(hw->wiphy,
- "failed to dma map skb, dropping TX frame.\n");
- if (start_ba_session) {
- spin_lock(&priv->stream_lock);
- mwl8k_remove_stream(hw, stream);
- spin_unlock(&priv->stream_lock);
- }
- dev_kfree_skb(skb);
- return;
- }
-
- spin_lock_bh(&priv->tx_lock);
-
- txq = priv->txq + index;
-
- /* Mgmt frames that go out frequently are probe
- * responses. Other mgmt frames got out relatively
- * infrequently. Hence reserve 2 buffers so that
- * other mgmt frames do not get dropped due to an
- * already queued probe response in one of the
- * reserved buffers.
- */
-
- if (txq->len >= MWL8K_TX_DESCS - 2) {
- if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
- if (start_ba_session) {
- spin_lock(&priv->stream_lock);
- mwl8k_remove_stream(hw, stream);
- spin_unlock(&priv->stream_lock);
- }
- mwl8k_tx_start(priv);
- spin_unlock_bh(&priv->tx_lock);
- pci_unmap_single(priv->pdev, dma, skb->len,
- PCI_DMA_TODEVICE);
- dev_kfree_skb(skb);
- return;
- }
- }
-
- BUG_ON(txq->skb[txq->tail] != NULL);
- txq->skb[txq->tail] = skb;
-
- tx = txq->txd + txq->tail;
- tx->data_rate = txdatarate;
- tx->tx_priority = txpriority;
- tx->qos_control = cpu_to_le16(qos);
- tx->pkt_phys_addr = cpu_to_le32(dma);
- tx->pkt_len = cpu_to_le16(skb->len);
- tx->rate_info = 0;
- if (!priv->ap_fw && sta != NULL)
- tx->peer_id = MWL8K_STA(sta)->peer_id;
- else
- tx->peer_id = 0;
-
- if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
- tx->timestamp = cpu_to_le32(ioread32(priv->regs +
- MWL8K_HW_TIMER_REGISTER));
- else
- tx->timestamp = 0;
-
- wmb();
- tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
-
- txq->len++;
- priv->pending_tx_pkts++;
-
- txq->tail++;
- if (txq->tail == MWL8K_TX_DESCS)
- txq->tail = 0;
-
- mwl8k_tx_start(priv);
-
- spin_unlock_bh(&priv->tx_lock);
-
- /* Initiate the ampdu session here */
- if (start_ba_session) {
- spin_lock(&priv->stream_lock);
- if (mwl8k_start_stream(hw, stream))
- mwl8k_remove_stream(hw, stream);
- spin_unlock(&priv->stream_lock);
- }
-}
-
-
-/*
- * Firmware access.
- *
- * We have the following requirements for issuing firmware commands:
- * - Some commands require that the packet transmit path is idle when
- * the command is issued. (For simplicity, we'll just quiesce the
- * transmit path for every command.)
- * - There are certain sequences of commands that need to be issued to
- * the hardware sequentially, with no other intervening commands.
- *
- * This leads to an implementation of a "firmware lock" as a mutex that
- * can be taken recursively, and which is taken by both the low-level
- * command submission function (mwl8k_post_cmd) as well as any users of
- * that function that require issuing of an atomic sequence of commands,
- * and quiesces the transmit path whenever it's taken.
- */
-static int mwl8k_fw_lock(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
-
- if (priv->fw_mutex_owner != current) {
- int rc;
-
- mutex_lock(&priv->fw_mutex);
- ieee80211_stop_queues(hw);
-
- rc = mwl8k_tx_wait_empty(hw);
- if (rc) {
- if (!priv->hw_restart_in_progress)
- ieee80211_wake_queues(hw);
-
- mutex_unlock(&priv->fw_mutex);
-
- return rc;
- }
-
- priv->fw_mutex_owner = current;
- }
-
- priv->fw_mutex_depth++;
-
- return 0;
-}
-
-static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
-
- if (!--priv->fw_mutex_depth) {
- if (!priv->hw_restart_in_progress)
- ieee80211_wake_queues(hw);
-
- priv->fw_mutex_owner = NULL;
- mutex_unlock(&priv->fw_mutex);
- }
-}
-
-static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
- u32 bitmap);
-
-/*
- * Command processing.
- */
-
-/* Timeout firmware commands after 10s */
-#define MWL8K_CMD_TIMEOUT_MS 10000
-
-static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
-{
- DECLARE_COMPLETION_ONSTACK(cmd_wait);
- struct mwl8k_priv *priv = hw->priv;
- void __iomem *regs = priv->regs;
- dma_addr_t dma_addr;
- unsigned int dma_size;
- int rc;
- unsigned long timeout = 0;
- u8 buf[32];
- u32 bitmap = 0;
-
- wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
- mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
-
- /* Before posting firmware commands that could change the hardware
- * characteristics, make sure that all BSSes are stopped temporary.
- * Enable these stopped BSSes after completion of the commands
- */
-
- rc = mwl8k_fw_lock(hw);
- if (rc)
- return rc;
-
- if (priv->ap_fw && priv->running_bsses) {
- switch (le16_to_cpu(cmd->code)) {
- case MWL8K_CMD_SET_RF_CHANNEL:
- case MWL8K_CMD_RADIO_CONTROL:
- case MWL8K_CMD_RF_TX_POWER:
- case MWL8K_CMD_TX_POWER:
- case MWL8K_CMD_RF_ANTENNA:
- case MWL8K_CMD_RTS_THRESHOLD:
- case MWL8K_CMD_MIMO_CONFIG:
- bitmap = priv->running_bsses;
- mwl8k_enable_bsses(hw, false, bitmap);
- break;
- }
- }
-
- cmd->result = (__force __le16) 0xffff;
- dma_size = le16_to_cpu(cmd->length);
- dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
- PCI_DMA_BIDIRECTIONAL);
- if (pci_dma_mapping_error(priv->pdev, dma_addr))
- return -ENOMEM;
-
- priv->hostcmd_wait = &cmd_wait;
- iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
- iowrite32(MWL8K_H2A_INT_DOORBELL,
- regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
- iowrite32(MWL8K_H2A_INT_DUMMY,
- regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
-
- timeout = wait_for_completion_timeout(&cmd_wait,
- msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
-
- priv->hostcmd_wait = NULL;
-
-
- pci_unmap_single(priv->pdev, dma_addr, dma_size,
- PCI_DMA_BIDIRECTIONAL);
-
- if (!timeout) {
- wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
- mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
- MWL8K_CMD_TIMEOUT_MS);
- rc = -ETIMEDOUT;
- } else {
- int ms;
-
- ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
-
- rc = cmd->result ? -EINVAL : 0;
- if (rc)
- wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
- mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
- le16_to_cpu(cmd->result));
- else if (ms > 2000)
- wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
- mwl8k_cmd_name(cmd->code,
- buf, sizeof(buf)),
- ms);
- }
-
- if (bitmap)
- mwl8k_enable_bsses(hw, true, bitmap);
-
- mwl8k_fw_unlock(hw);
-
- return rc;
-}
-
-static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct mwl8k_cmd_pkt *cmd)
-{
- if (vif != NULL)
- cmd->macid = MWL8K_VIF(vif)->macid;
- return mwl8k_post_cmd(hw, cmd);
-}
-
-/*
- * Setup code shared between STA and AP firmware images.
- */
-static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
-
- BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
- memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
-
- BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
- memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
-
- priv->band_24.band = IEEE80211_BAND_2GHZ;
- priv->band_24.channels = priv->channels_24;
- priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
- priv->band_24.bitrates = priv->rates_24;
- priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
-
- hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
-}
-
-static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
-
- BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
- memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
-
- BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
- memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
-
- priv->band_50.band = IEEE80211_BAND_5GHZ;
- priv->band_50.channels = priv->channels_50;
- priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
- priv->band_50.bitrates = priv->rates_50;
- priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
-
- hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
-}
-
-/*
- * CMD_GET_HW_SPEC (STA version).
- */
-struct mwl8k_cmd_get_hw_spec_sta {
- struct mwl8k_cmd_pkt header;
- __u8 hw_rev;
- __u8 host_interface;
- __le16 num_mcaddrs;
- __u8 perm_addr[ETH_ALEN];
- __le16 region_code;
- __le32 fw_rev;
- __le32 ps_cookie;
- __le32 caps;
- __u8 mcs_bitmap[16];
- __le32 rx_queue_ptr;
- __le32 num_tx_queues;
- __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
- __le32 caps2;
- __le32 num_tx_desc_per_queue;
- __le32 total_rxd;
-} __packed;
-
-#define MWL8K_CAP_MAX_AMSDU 0x20000000
-#define MWL8K_CAP_GREENFIELD 0x08000000
-#define MWL8K_CAP_AMPDU 0x04000000
-#define MWL8K_CAP_RX_STBC 0x01000000
-#define MWL8K_CAP_TX_STBC 0x00800000
-#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
-#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
-#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
-#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
-#define MWL8K_CAP_DELAY_BA 0x00003000
-#define MWL8K_CAP_MIMO 0x00000200
-#define MWL8K_CAP_40MHZ 0x00000100
-#define MWL8K_CAP_BAND_MASK 0x00000007
-#define MWL8K_CAP_5GHZ 0x00000004
-#define MWL8K_CAP_2GHZ4 0x00000001
-
-static void
-mwl8k_set_ht_caps(struct ieee80211_hw *hw,
- struct ieee80211_supported_band *band, u32 cap)
-{
- int rx_streams;
- int tx_streams;
-
- band->ht_cap.ht_supported = 1;
-
- if (cap & MWL8K_CAP_MAX_AMSDU)
- band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
- if (cap & MWL8K_CAP_GREENFIELD)
- band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
- if (cap & MWL8K_CAP_AMPDU) {
- ieee80211_hw_set(hw, AMPDU_AGGREGATION);
- band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
- band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
- }
- if (cap & MWL8K_CAP_RX_STBC)
- band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
- if (cap & MWL8K_CAP_TX_STBC)
- band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
- if (cap & MWL8K_CAP_SHORTGI_40MHZ)
- band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
- if (cap & MWL8K_CAP_SHORTGI_20MHZ)
- band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
- if (cap & MWL8K_CAP_DELAY_BA)
- band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
- if (cap & MWL8K_CAP_40MHZ)
- band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
-
- rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
- tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
-
- band->ht_cap.mcs.rx_mask[0] = 0xff;
- if (rx_streams >= 2)
- band->ht_cap.mcs.rx_mask[1] = 0xff;
- if (rx_streams >= 3)
- band->ht_cap.mcs.rx_mask[2] = 0xff;
- band->ht_cap.mcs.rx_mask[4] = 0x01;
- band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
-
- if (rx_streams != tx_streams) {
- band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
- band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
- IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
- }
-}
-
-static void
-mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
-{
- struct mwl8k_priv *priv = hw->priv;
-
- if (priv->caps)
- return;
-
- if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
- mwl8k_setup_2ghz_band(hw);
- if (caps & MWL8K_CAP_MIMO)
- mwl8k_set_ht_caps(hw, &priv->band_24, caps);
- }
-
- if (caps & MWL8K_CAP_5GHZ) {
- mwl8k_setup_5ghz_band(hw);
- if (caps & MWL8K_CAP_MIMO)
- mwl8k_set_ht_caps(hw, &priv->band_50, caps);
- }
-
- priv->caps = caps;
-}
-
-static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_cmd_get_hw_spec_sta *cmd;
- int rc;
- int i;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
- memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
- cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
- cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
- cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
- for (i = 0; i < mwl8k_tx_queues(priv); i++)
- cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
- cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
- cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
-
- if (!rc) {
- SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
- priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
- priv->fw_rev = le32_to_cpu(cmd->fw_rev);
- priv->hw_rev = cmd->hw_rev;
- mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
- priv->ap_macids_supported = 0x00000000;
- priv->sta_macids_supported = 0x00000001;
- }
-
- kfree(cmd);
- return rc;
-}
-
-/*
- * CMD_GET_HW_SPEC (AP version).
- */
-struct mwl8k_cmd_get_hw_spec_ap {
- struct mwl8k_cmd_pkt header;
- __u8 hw_rev;
- __u8 host_interface;
- __le16 num_wcb;
- __le16 num_mcaddrs;
- __u8 perm_addr[ETH_ALEN];
- __le16 region_code;
- __le16 num_antenna;
- __le32 fw_rev;
- __le32 wcbbase0;
- __le32 rxwrptr;
- __le32 rxrdptr;
- __le32 ps_cookie;
- __le32 wcbbase1;
- __le32 wcbbase2;
- __le32 wcbbase3;
- __le32 fw_api_version;
- __le32 caps;
- __le32 num_of_ampdu_queues;
- __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
-} __packed;
-
-static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_cmd_get_hw_spec_ap *cmd;
- int rc, i;
- u32 api_version;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
- memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
- cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
-
- if (!rc) {
- int off;
-
- api_version = le32_to_cpu(cmd->fw_api_version);
- if (priv->device_info->fw_api_ap != api_version) {
- printk(KERN_ERR "%s: Unsupported fw API version for %s."
- " Expected %d got %d.\n", MWL8K_NAME,
- priv->device_info->part_name,
- priv->device_info->fw_api_ap,
- api_version);
- rc = -EINVAL;
- goto done;
- }
- SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
- priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
- priv->fw_rev = le32_to_cpu(cmd->fw_rev);
- priv->hw_rev = cmd->hw_rev;
- mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
- priv->ap_macids_supported = 0x000000ff;
- priv->sta_macids_supported = 0x00000100;
- priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
- if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
- wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
- " but we only support %d.\n",
- priv->num_ampdu_queues,
- MWL8K_MAX_AMPDU_QUEUES);
- priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
- }
- off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
- iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
-
- off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
- iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
-
- priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
- priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
- priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
- priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
-
- for (i = 0; i < priv->num_ampdu_queues; i++)
- priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
- le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
- }
-
-done:
- kfree(cmd);
- return rc;
-}
-
-/*
- * CMD_SET_HW_SPEC.
- */
-struct mwl8k_cmd_set_hw_spec {
- struct mwl8k_cmd_pkt header;
- __u8 hw_rev;
- __u8 host_interface;
- __le16 num_mcaddrs;
- __u8 perm_addr[ETH_ALEN];
- __le16 region_code;
- __le32 fw_rev;
- __le32 ps_cookie;
- __le32 caps;
- __le32 rx_queue_ptr;
- __le32 num_tx_queues;
- __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
- __le32 flags;
- __le32 num_tx_desc_per_queue;
- __le32 total_rxd;
-} __packed;
-
-/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
- * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
- * the packets that are queued for more than 500ms, will be dropped in the
- * hardware. This helps minimizing the issues caused due to head-of-line
- * blocking where a slow client can hog the bandwidth and affect traffic to a
- * faster client.
- */
-#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
-#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
-#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
-#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
-#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
-
-static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_cmd_set_hw_spec *cmd;
- int rc;
- int i;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
- cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
- cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
- cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
-
- /*
- * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
- * that order. Firmware has Q3 as highest priority and Q0 as lowest
- * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
- * priority is interpreted the right way in firmware.
- */
- for (i = 0; i < mwl8k_tx_queues(priv); i++) {
- int j = mwl8k_tx_queues(priv) - 1 - i;
- cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
- }
-
- cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
- MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
- MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
- MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
- MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
- cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
- cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_MAC_MULTICAST_ADR.
- */
-struct mwl8k_cmd_mac_multicast_adr {
- struct mwl8k_cmd_pkt header;
- __le16 action;
- __le16 numaddr;
- __u8 addr[0][ETH_ALEN];
-};
-
-#define MWL8K_ENABLE_RX_DIRECTED 0x0001
-#define MWL8K_ENABLE_RX_MULTICAST 0x0002
-#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
-#define MWL8K_ENABLE_RX_BROADCAST 0x0008
-
-static struct mwl8k_cmd_pkt *
-__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
- struct netdev_hw_addr_list *mc_list)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_cmd_mac_multicast_adr *cmd;
- int size;
- int mc_count = 0;
-
- if (mc_list)
- mc_count = netdev_hw_addr_list_count(mc_list);
-
- if (allmulti || mc_count > priv->num_mcaddrs) {
- allmulti = 1;
- mc_count = 0;
- }
-
- size = sizeof(*cmd) + mc_count * ETH_ALEN;
-
- cmd = kzalloc(size, GFP_ATOMIC);
- if (cmd == NULL)
- return NULL;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
- cmd->header.length = cpu_to_le16(size);
- cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
- MWL8K_ENABLE_RX_BROADCAST);
-
- if (allmulti) {
- cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
- } else if (mc_count) {
- struct netdev_hw_addr *ha;
- int i = 0;
-
- cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
- cmd->numaddr = cpu_to_le16(mc_count);
- netdev_hw_addr_list_for_each(ha, mc_list) {
- memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
- }
- }
-
- return &cmd->header;
-}
-
-/*
- * CMD_GET_STAT.
- */
-struct mwl8k_cmd_get_stat {
- struct mwl8k_cmd_pkt header;
- __le32 stats[64];
-} __packed;
-
-#define MWL8K_STAT_ACK_FAILURE 9
-#define MWL8K_STAT_RTS_FAILURE 12
-#define MWL8K_STAT_FCS_ERROR 24
-#define MWL8K_STAT_RTS_SUCCESS 11
-
-static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
- struct ieee80211_low_level_stats *stats)
-{
- struct mwl8k_cmd_get_stat *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- if (!rc) {
- stats->dot11ACKFailureCount =
- le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
- stats->dot11RTSFailureCount =
- le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
- stats->dot11FCSErrorCount =
- le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
- stats->dot11RTSSuccessCount =
- le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
- }
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_RADIO_CONTROL.
- */
-struct mwl8k_cmd_radio_control {
- struct mwl8k_cmd_pkt header;
- __le16 action;
- __le16 control;
- __le16 radio_on;
-} __packed;
-
-static int
-mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_cmd_radio_control *cmd;
- int rc;
-
- if (enable == priv->radio_on && !force)
- return 0;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(MWL8K_CMD_SET);
- cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
- cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- if (!rc)
- priv->radio_on = enable;
-
- return rc;
-}
-
-static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
-{
- return mwl8k_cmd_radio_control(hw, 0, 0);
-}
-
-static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
-{
- return mwl8k_cmd_radio_control(hw, 1, 0);
-}
-
-static int
-mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
-{
- struct mwl8k_priv *priv = hw->priv;
-
- priv->radio_short_preamble = short_preamble;
-
- return mwl8k_cmd_radio_control(hw, 1, 1);
-}
-
-/*
- * CMD_RF_TX_POWER.
- */
-#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
-
-struct mwl8k_cmd_rf_tx_power {
- struct mwl8k_cmd_pkt header;
- __le16 action;
- __le16 support_level;
- __le16 current_level;
- __le16 reserved;
- __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
-} __packed;
-
-static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
-{
- struct mwl8k_cmd_rf_tx_power *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(MWL8K_CMD_SET);
- cmd->support_level = cpu_to_le16(dBm);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_TX_POWER.
- */
-#define MWL8K_TX_POWER_LEVEL_TOTAL 12
-
-struct mwl8k_cmd_tx_power {
- struct mwl8k_cmd_pkt header;
- __le16 action;
- __le16 band;
- __le16 channel;
- __le16 bw;
- __le16 sub_ch;
- __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
-} __packed;
-
-static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
- struct ieee80211_conf *conf,
- unsigned short pwr)
-{
- struct ieee80211_channel *channel = conf->chandef.chan;
- enum nl80211_channel_type channel_type =
- cfg80211_get_chandef_type(&conf->chandef);
- struct mwl8k_cmd_tx_power *cmd;
- int rc;
- int i;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
-
- if (channel->band == IEEE80211_BAND_2GHZ)
- cmd->band = cpu_to_le16(0x1);
- else if (channel->band == IEEE80211_BAND_5GHZ)
- cmd->band = cpu_to_le16(0x4);
-
- cmd->channel = cpu_to_le16(channel->hw_value);
-
- if (channel_type == NL80211_CHAN_NO_HT ||
- channel_type == NL80211_CHAN_HT20) {
- cmd->bw = cpu_to_le16(0x2);
- } else {
- cmd->bw = cpu_to_le16(0x4);
- if (channel_type == NL80211_CHAN_HT40MINUS)
- cmd->sub_ch = cpu_to_le16(0x3);
- else if (channel_type == NL80211_CHAN_HT40PLUS)
- cmd->sub_ch = cpu_to_le16(0x1);
- }
-
- for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
- cmd->power_level_list[i] = cpu_to_le16(pwr);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_RF_ANTENNA.
- */
-struct mwl8k_cmd_rf_antenna {
- struct mwl8k_cmd_pkt header;
- __le16 antenna;
- __le16 mode;
-} __packed;
-
-#define MWL8K_RF_ANTENNA_RX 1
-#define MWL8K_RF_ANTENNA_TX 2
-
-static int
-mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
-{
- struct mwl8k_cmd_rf_antenna *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->antenna = cpu_to_le16(antenna);
- cmd->mode = cpu_to_le16(mask);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_SET_BEACON.
- */
-struct mwl8k_cmd_set_beacon {
- struct mwl8k_cmd_pkt header;
- __le16 beacon_len;
- __u8 beacon[0];
-};
-
-static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u8 *beacon, int len)
-{
- struct mwl8k_cmd_set_beacon *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
- cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
- cmd->beacon_len = cpu_to_le16(len);
- memcpy(cmd->beacon, beacon, len);
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_SET_PRE_SCAN.
- */
-struct mwl8k_cmd_set_pre_scan {
- struct mwl8k_cmd_pkt header;
-} __packed;
-
-static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
-{
- struct mwl8k_cmd_set_pre_scan *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_BBP_REG_ACCESS.
- */
-struct mwl8k_cmd_bbp_reg_access {
- struct mwl8k_cmd_pkt header;
- __le16 action;
- __le16 offset;
- u8 value;
- u8 rsrv[3];
-} __packed;
-
-static int
-mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,
- u16 action,
- u16 offset,
- u8 *value)
-{
- struct mwl8k_cmd_bbp_reg_access *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(action);
- cmd->offset = cpu_to_le16(offset);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
-
- if (!rc)
- *value = cmd->value;
- else
- *value = 0;
-
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_SET_POST_SCAN.
- */
-struct mwl8k_cmd_set_post_scan {
- struct mwl8k_cmd_pkt header;
- __le32 isibss;
- __u8 bssid[ETH_ALEN];
-} __packed;
-
-static int
-mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
-{
- struct mwl8k_cmd_set_post_scan *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->isibss = 0;
- memcpy(cmd->bssid, mac, ETH_ALEN);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-static int freq_to_idx(struct mwl8k_priv *priv, int freq)
-{
- struct ieee80211_supported_band *sband;
- int band, ch, idx = 0;
-
- for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
- sband = priv->hw->wiphy->bands[band];
- if (!sband)
- continue;
-
- for (ch = 0; ch < sband->n_channels; ch++, idx++)
- if (sband->channels[ch].center_freq == freq)
- goto exit;
- }
-
-exit:
- return idx;
-}
-
-static void mwl8k_update_survey(struct mwl8k_priv *priv,
- struct ieee80211_channel *channel)
-{
- u32 cca_cnt, rx_rdy;
- s8 nf = 0, idx;
- struct survey_info *survey;
-
- idx = freq_to_idx(priv, priv->acs_chan->center_freq);
- if (idx >= MWL8K_NUM_CHANS) {
- wiphy_err(priv->hw->wiphy, "Failed to update survey\n");
- return;
- }
-
- survey = &priv->survey[idx];
-
- cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);
- cca_cnt /= 1000; /* uSecs to mSecs */
- survey->time_busy = (u64) cca_cnt;
-
- rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);
- rx_rdy /= 1000; /* uSecs to mSecs */
- survey->time_rx = (u64) rx_rdy;
-
- priv->channel_time = jiffies - priv->channel_time;
- survey->time = jiffies_to_msecs(priv->channel_time);
-
- survey->channel = channel;
-
- mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);
-
- /* Make sure sign is negative else ACS at hostapd fails */
- survey->noise = nf * -1;
-
- survey->filled = SURVEY_INFO_NOISE_DBM |
- SURVEY_INFO_TIME |
- SURVEY_INFO_TIME_BUSY |
- SURVEY_INFO_TIME_RX;
-}
-
-/*
- * CMD_SET_RF_CHANNEL.
- */
-struct mwl8k_cmd_set_rf_channel {
- struct mwl8k_cmd_pkt header;
- __le16 action;
- __u8 current_channel;
- __le32 channel_flags;
-} __packed;
-
-static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
- struct ieee80211_conf *conf)
-{
- struct ieee80211_channel *channel = conf->chandef.chan;
- enum nl80211_channel_type channel_type =
- cfg80211_get_chandef_type(&conf->chandef);
- struct mwl8k_cmd_set_rf_channel *cmd;
- struct mwl8k_priv *priv = hw->priv;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(MWL8K_CMD_SET);
- cmd->current_channel = channel->hw_value;
-
- if (channel->band == IEEE80211_BAND_2GHZ)
- cmd->channel_flags |= cpu_to_le32(0x00000001);
- else if (channel->band == IEEE80211_BAND_5GHZ)
- cmd->channel_flags |= cpu_to_le32(0x00000004);
-
- if (!priv->sw_scan_start) {
- if (channel_type == NL80211_CHAN_NO_HT ||
- channel_type == NL80211_CHAN_HT20)
- cmd->channel_flags |= cpu_to_le32(0x00000080);
- else if (channel_type == NL80211_CHAN_HT40MINUS)
- cmd->channel_flags |= cpu_to_le32(0x000001900);
- else if (channel_type == NL80211_CHAN_HT40PLUS)
- cmd->channel_flags |= cpu_to_le32(0x000000900);
- } else {
- cmd->channel_flags |= cpu_to_le32(0x00000080);
- }
-
- if (priv->sw_scan_start) {
- /* Store current channel stats
- * before switching to newer one.
- * This will be processed only for AP fw.
- */
- if (priv->channel_time != 0)
- mwl8k_update_survey(priv, priv->acs_chan);
-
- priv->channel_time = jiffies;
- priv->acs_chan = channel;
- }
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_SET_AID.
- */
-#define MWL8K_FRAME_PROT_DISABLED 0x00
-#define MWL8K_FRAME_PROT_11G 0x07
-#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
-#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
-
-struct mwl8k_cmd_update_set_aid {
- struct mwl8k_cmd_pkt header;
- __le16 aid;
-
- /* AP's MAC address (BSSID) */
- __u8 bssid[ETH_ALEN];
- __le16 protection_mode;
- __u8 supp_rates[14];
-} __packed;
-
-static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
-{
- int i;
- int j;
-
- /*
- * Clear nonstandard rate 4.
- */
- mask &= 0x1fef;
-
- for (i = 0, j = 0; i < 13; i++) {
- if (mask & (1 << i))
- rates[j++] = mwl8k_rates_24[i].hw_value;
- }
-}
-
-static int
-mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u32 legacy_rate_mask)
-{
- struct mwl8k_cmd_update_set_aid *cmd;
- u16 prot_mode;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->aid = cpu_to_le16(vif->bss_conf.aid);
- memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
-
- if (vif->bss_conf.use_cts_prot) {
- prot_mode = MWL8K_FRAME_PROT_11G;
- } else {
- switch (vif->bss_conf.ht_operation_mode &
- IEEE80211_HT_OP_MODE_PROTECTION) {
- case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
- prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
- break;
- case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
- prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
- break;
- default:
- prot_mode = MWL8K_FRAME_PROT_DISABLED;
- break;
- }
- }
- cmd->protection_mode = cpu_to_le16(prot_mode);
-
- legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_SET_RATE.
- */
-struct mwl8k_cmd_set_rate {
- struct mwl8k_cmd_pkt header;
- __u8 legacy_rates[14];
-
- /* Bitmap for supported MCS codes. */
- __u8 mcs_set[16];
- __u8 reserved[16];
-} __packed;
-
-static int
-mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
- u32 legacy_rate_mask, u8 *mcs_rates)
-{
- struct mwl8k_cmd_set_rate *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
- memcpy(cmd->mcs_set, mcs_rates, 16);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_FINALIZE_JOIN.
- */
-#define MWL8K_FJ_BEACON_MAXLEN 128
-
-struct mwl8k_cmd_finalize_join {
- struct mwl8k_cmd_pkt header;
- __le32 sleep_interval; /* Number of beacon periods to sleep */
- __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
-} __packed;
-
-static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
- int framelen, int dtim)
-{
- struct mwl8k_cmd_finalize_join *cmd;
- struct ieee80211_mgmt *payload = frame;
- int payload_len;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
-
- payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
- if (payload_len < 0)
- payload_len = 0;
- else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
- payload_len = MWL8K_FJ_BEACON_MAXLEN;
-
- memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_SET_RTS_THRESHOLD.
- */
-struct mwl8k_cmd_set_rts_threshold {
- struct mwl8k_cmd_pkt header;
- __le16 action;
- __le16 threshold;
-} __packed;
-
-static int
-mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
-{
- struct mwl8k_cmd_set_rts_threshold *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(MWL8K_CMD_SET);
- cmd->threshold = cpu_to_le16(rts_thresh);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_SET_SLOT.
- */
-struct mwl8k_cmd_set_slot {
- struct mwl8k_cmd_pkt header;
- __le16 action;
- __u8 short_slot;
-} __packed;
-
-static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
-{
- struct mwl8k_cmd_set_slot *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(MWL8K_CMD_SET);
- cmd->short_slot = short_slot_time;
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_SET_EDCA_PARAMS.
- */
-struct mwl8k_cmd_set_edca_params {
- struct mwl8k_cmd_pkt header;
-
- /* See MWL8K_SET_EDCA_XXX below */
- __le16 action;
-
- /* TX opportunity in units of 32 us */
- __le16 txop;
-
- union {
- struct {
- /* Log exponent of max contention period: 0...15 */
- __le32 log_cw_max;
-
- /* Log exponent of min contention period: 0...15 */
- __le32 log_cw_min;
-
- /* Adaptive interframe spacing in units of 32us */
- __u8 aifs;
-
- /* TX queue to configure */
- __u8 txq;
- } ap;
- struct {
- /* Log exponent of max contention period: 0...15 */
- __u8 log_cw_max;
-
- /* Log exponent of min contention period: 0...15 */
- __u8 log_cw_min;
-
- /* Adaptive interframe spacing in units of 32us */
- __u8 aifs;
-
- /* TX queue to configure */
- __u8 txq;
- } sta;
- };
-} __packed;
-
-#define MWL8K_SET_EDCA_CW 0x01
-#define MWL8K_SET_EDCA_TXOP 0x02
-#define MWL8K_SET_EDCA_AIFS 0x04
-
-#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
- MWL8K_SET_EDCA_TXOP | \
- MWL8K_SET_EDCA_AIFS)
-
-static int
-mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
- __u16 cw_min, __u16 cw_max,
- __u8 aifs, __u16 txop)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_cmd_set_edca_params *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
- cmd->txop = cpu_to_le16(txop);
- if (priv->ap_fw) {
- cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
- cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
- cmd->ap.aifs = aifs;
- cmd->ap.txq = qnum;
- } else {
- cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
- cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
- cmd->sta.aifs = aifs;
- cmd->sta.txq = qnum;
- }
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_SET_WMM_MODE.
- */
-struct mwl8k_cmd_set_wmm_mode {
- struct mwl8k_cmd_pkt header;
- __le16 action;
-} __packed;
-
-static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_cmd_set_wmm_mode *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(!!enable);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- if (!rc)
- priv->wmm_enabled = enable;
-
- return rc;
-}
-
-/*
- * CMD_MIMO_CONFIG.
- */
-struct mwl8k_cmd_mimo_config {
- struct mwl8k_cmd_pkt header;
- __le32 action;
- __u8 rx_antenna_map;
- __u8 tx_antenna_map;
-} __packed;
-
-static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
-{
- struct mwl8k_cmd_mimo_config *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
- cmd->rx_antenna_map = rx;
- cmd->tx_antenna_map = tx;
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_USE_FIXED_RATE (STA version).
- */
-struct mwl8k_cmd_use_fixed_rate_sta {
- struct mwl8k_cmd_pkt header;
- __le32 action;
- __le32 allow_rate_drop;
- __le32 num_rates;
- struct {
- __le32 is_ht_rate;
- __le32 enable_retry;
- __le32 rate;
- __le32 retry_count;
- } rate_entry[8];
- __le32 rate_type;
- __le32 reserved1;
- __le32 reserved2;
-} __packed;
-
-#define MWL8K_USE_AUTO_RATE 0x0002
-#define MWL8K_UCAST_RATE 0
-
-static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
-{
- struct mwl8k_cmd_use_fixed_rate_sta *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
- cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_USE_FIXED_RATE (AP version).
- */
-struct mwl8k_cmd_use_fixed_rate_ap {
- struct mwl8k_cmd_pkt header;
- __le32 action;
- __le32 allow_rate_drop;
- __le32 num_rates;
- struct mwl8k_rate_entry_ap {
- __le32 is_ht_rate;
- __le32 enable_retry;
- __le32 rate;
- __le32 retry_count;
- } rate_entry[4];
- u8 multicast_rate;
- u8 multicast_rate_type;
- u8 management_rate;
-} __packed;
-
-static int
-mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
-{
- struct mwl8k_cmd_use_fixed_rate_ap *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
- cmd->multicast_rate = mcast;
- cmd->management_rate = mgmt;
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_ENABLE_SNIFFER.
- */
-struct mwl8k_cmd_enable_sniffer {
- struct mwl8k_cmd_pkt header;
- __le32 action;
-} __packed;
-
-static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
-{
- struct mwl8k_cmd_enable_sniffer *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le32(!!enable);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-struct mwl8k_cmd_update_mac_addr {
- struct mwl8k_cmd_pkt header;
- union {
- struct {
- __le16 mac_type;
- __u8 mac_addr[ETH_ALEN];
- } mbss;
- __u8 mac_addr[ETH_ALEN];
- };
-} __packed;
-
-#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
-#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
-#define MWL8K_MAC_TYPE_PRIMARY_AP 2
-#define MWL8K_MAC_TYPE_SECONDARY_AP 3
-
-static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u8 *mac, bool set)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
- struct mwl8k_cmd_update_mac_addr *cmd;
- int mac_type;
- int rc;
-
- mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
- if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
- if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
- if (priv->ap_fw)
- mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
- else
- mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
- else
- mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
- } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
- if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
- mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
- else
- mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
- }
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- if (set)
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
- else
- cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
-
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- if (priv->ap_fw) {
- cmd->mbss.mac_type = cpu_to_le16(mac_type);
- memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
- } else {
- memcpy(cmd->mac_addr, mac, ETH_ALEN);
- }
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * MWL8K_CMD_SET_MAC_ADDR.
- */
-static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u8 *mac)
-{
- return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
-}
-
-/*
- * MWL8K_CMD_DEL_MAC_ADDR.
- */
-static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u8 *mac)
-{
- return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
-}
-
-/*
- * CMD_SET_RATEADAPT_MODE.
- */
-struct mwl8k_cmd_set_rate_adapt_mode {
- struct mwl8k_cmd_pkt header;
- __le16 action;
- __le16 mode;
-} __packed;
-
-static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
-{
- struct mwl8k_cmd_set_rate_adapt_mode *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le16(MWL8K_CMD_SET);
- cmd->mode = cpu_to_le16(mode);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_GET_WATCHDOG_BITMAP.
- */
-struct mwl8k_cmd_get_watchdog_bitmap {
- struct mwl8k_cmd_pkt header;
- u8 bitmap;
-} __packed;
-
-static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
-{
- struct mwl8k_cmd_get_watchdog_bitmap *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- if (!rc)
- *bitmap = cmd->bitmap;
-
- kfree(cmd);
-
- return rc;
-}
-
-#define MWL8K_WMM_QUEUE_NUMBER 3
-
-static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
- u8 idx);
-
-static void mwl8k_watchdog_ba_events(struct work_struct *work)
-{
- int rc;
- u8 bitmap = 0, stream_index;
- struct mwl8k_ampdu_stream *streams;
- struct mwl8k_priv *priv =
- container_of(work, struct mwl8k_priv, watchdog_ba_handle);
- struct ieee80211_hw *hw = priv->hw;
- int i;
- u32 status = 0;
-
- mwl8k_fw_lock(hw);
-
- rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
- if (rc)
- goto done;
-
- spin_lock(&priv->stream_lock);
-
- /* the bitmap is the hw queue number. Map it to the ampdu queue. */
- for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
- if (bitmap & (1 << i)) {
- stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
- TOTAL_HW_TX_QUEUES;
- streams = &priv->ampdu[stream_index];
- if (streams->state == AMPDU_STREAM_ACTIVE) {
- ieee80211_stop_tx_ba_session(streams->sta,
- streams->tid);
- spin_unlock(&priv->stream_lock);
- mwl8k_destroy_ba(hw, stream_index);
- spin_lock(&priv->stream_lock);
- }
- }
- }
-
- spin_unlock(&priv->stream_lock);
-done:
- atomic_dec(&priv->watchdog_event_pending);
- status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
- iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
- priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
- mwl8k_fw_unlock(hw);
- return;
-}
-
-
-/*
- * CMD_BSS_START.
- */
-struct mwl8k_cmd_bss_start {
- struct mwl8k_cmd_pkt header;
- __le32 enable;
-} __packed;
-
-static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, int enable)
-{
- struct mwl8k_cmd_bss_start *cmd;
- struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
- struct mwl8k_priv *priv = hw->priv;
- int rc;
-
- if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
- return 0;
-
- if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
- return 0;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->enable = cpu_to_le32(enable);
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
- kfree(cmd);
-
- if (!rc) {
- if (enable)
- priv->running_bsses |= (1 << mwl8k_vif->macid);
- else
- priv->running_bsses &= ~(1 << mwl8k_vif->macid);
- }
- return rc;
-}
-
-static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_vif *mwl8k_vif, *tmp_vif;
- struct ieee80211_vif *vif;
-
- list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
- vif = mwl8k_vif->vif;
-
- if (!(bitmap & (1 << mwl8k_vif->macid)))
- continue;
-
- if (vif->type == NL80211_IFTYPE_AP)
- mwl8k_cmd_bss_start(hw, vif, enable);
- }
-}
-/*
- * CMD_BASTREAM.
- */
-
-/*
- * UPSTREAM is tx direction
- */
-#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
-#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
-
-enum ba_stream_action_type {
- MWL8K_BA_CREATE,
- MWL8K_BA_UPDATE,
- MWL8K_BA_DESTROY,
- MWL8K_BA_FLUSH,
- MWL8K_BA_CHECK,
-};
-
-
-struct mwl8k_create_ba_stream {
- __le32 flags;
- __le32 idle_thrs;
- __le32 bar_thrs;
- __le32 window_size;
- u8 peer_mac_addr[6];
- u8 dialog_token;
- u8 tid;
- u8 queue_id;
- u8 param_info;
- __le32 ba_context;
- u8 reset_seq_no_flag;
- __le16 curr_seq_no;
- u8 sta_src_mac_addr[6];
-} __packed;
-
-struct mwl8k_destroy_ba_stream {
- __le32 flags;
- __le32 ba_context;
-} __packed;
-
-struct mwl8k_cmd_bastream {
- struct mwl8k_cmd_pkt header;
- __le32 action;
- union {
- struct mwl8k_create_ba_stream create_params;
- struct mwl8k_destroy_ba_stream destroy_params;
- };
-} __packed;
-
-static int
-mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
- struct ieee80211_vif *vif)
-{
- struct mwl8k_cmd_bastream *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
- cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
-
- cmd->create_params.queue_id = stream->idx;
- memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
- ETH_ALEN);
- cmd->create_params.tid = stream->tid;
-
- cmd->create_params.flags =
- cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
- cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
-
- kfree(cmd);
-
- return rc;
-}
-
-static int
-mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
- u8 buf_size, struct ieee80211_vif *vif)
-{
- struct mwl8k_cmd_bastream *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
-
- cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
-
- cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
- cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
- cmd->create_params.queue_id = stream->idx;
-
- memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
- cmd->create_params.tid = stream->tid;
- cmd->create_params.curr_seq_no = cpu_to_le16(0);
- cmd->create_params.reset_seq_no_flag = 1;
-
- cmd->create_params.param_info =
- (stream->sta->ht_cap.ampdu_factor &
- IEEE80211_HT_AMPDU_PARM_FACTOR) |
- ((stream->sta->ht_cap.ampdu_density << 2) &
- IEEE80211_HT_AMPDU_PARM_DENSITY);
-
- cmd->create_params.flags =
- cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
- BASTREAM_FLAG_DIRECTION_UPSTREAM);
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
-
- wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
- stream->sta->addr, stream->tid);
- kfree(cmd);
-
- return rc;
-}
-
-static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
- u8 idx)
-{
- struct mwl8k_cmd_bastream *cmd;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
-
- cmd->destroy_params.ba_context = cpu_to_le32(idx);
- mwl8k_post_cmd(hw, &cmd->header);
-
- wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
-
- kfree(cmd);
-}
-
-/*
- * CMD_SET_NEW_STN.
- */
-struct mwl8k_cmd_set_new_stn {
- struct mwl8k_cmd_pkt header;
- __le16 aid;
- __u8 mac_addr[6];
- __le16 stn_id;
- __le16 action;
- __le16 rsvd;
- __le32 legacy_rates;
- __u8 ht_rates[4];
- __le16 cap_info;
- __le16 ht_capabilities_info;
- __u8 mac_ht_param_info;
- __u8 rev;
- __u8 control_channel;
- __u8 add_channel;
- __le16 op_mode;
- __le16 stbc;
- __u8 add_qos_info;
- __u8 is_qos_sta;
- __le32 fw_sta_ptr;
-} __packed;
-
-#define MWL8K_STA_ACTION_ADD 0
-#define MWL8K_STA_ACTION_REMOVE 2
-
-static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
-{
- struct mwl8k_cmd_set_new_stn *cmd;
- u32 rates;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->aid = cpu_to_le16(sta->aid);
- memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
- cmd->stn_id = cpu_to_le16(sta->aid);
- cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
- if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
- rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
- else
- rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
- cmd->legacy_rates = cpu_to_le32(rates);
- if (sta->ht_cap.ht_supported) {
- cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
- cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
- cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
- cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
- cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
- cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
- ((sta->ht_cap.ampdu_density & 7) << 2);
- cmd->is_qos_sta = 1;
- }
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct mwl8k_cmd_set_new_stn *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u8 *addr)
-{
- struct mwl8k_cmd_set_new_stn *cmd;
- struct mwl8k_priv *priv = hw->priv;
- int rc, i;
- u8 idx;
-
- spin_lock(&priv->stream_lock);
- /* Destroy any active ampdu streams for this sta */
- for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
- struct mwl8k_ampdu_stream *s;
- s = &priv->ampdu[i];
- if (s->state != AMPDU_NO_STREAM) {
- if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
- if (s->state == AMPDU_STREAM_ACTIVE) {
- idx = s->idx;
- spin_unlock(&priv->stream_lock);
- mwl8k_destroy_ba(hw, idx);
- spin_lock(&priv->stream_lock);
- } else if (s->state == AMPDU_STREAM_NEW) {
- mwl8k_remove_stream(hw, s);
- }
- }
- }
- }
-
- spin_unlock(&priv->stream_lock);
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- memcpy(cmd->mac_addr, addr, ETH_ALEN);
- cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-/*
- * CMD_UPDATE_ENCRYPTION.
- */
-
-#define MAX_ENCR_KEY_LENGTH 16
-#define MIC_KEY_LENGTH 8
-
-struct mwl8k_cmd_update_encryption {
- struct mwl8k_cmd_pkt header;
-
- __le32 action;
- __le32 reserved;
- __u8 mac_addr[6];
- __u8 encr_type;
-
-} __packed;
-
-struct mwl8k_cmd_set_key {
- struct mwl8k_cmd_pkt header;
-
- __le32 action;
- __le32 reserved;
- __le16 length;
- __le16 key_type_id;
- __le32 key_info;
- __le32 key_id;
- __le16 key_len;
- __u8 key_material[MAX_ENCR_KEY_LENGTH];
- __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
- __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
- __le16 tkip_rsc_low;
- __le32 tkip_rsc_high;
- __le16 tkip_tsc_low;
- __le32 tkip_tsc_high;
- __u8 mac_addr[6];
-} __packed;
-
-enum {
- MWL8K_ENCR_ENABLE,
- MWL8K_ENCR_SET_KEY,
- MWL8K_ENCR_REMOVE_KEY,
- MWL8K_ENCR_SET_GROUP_KEY,
-};
-
-#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
-#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
-#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
-#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
-#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
-
-enum {
- MWL8K_ALG_WEP,
- MWL8K_ALG_TKIP,
- MWL8K_ALG_CCMP,
-};
-
-#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
-#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
-#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
-#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
-#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
-
-static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- u8 *addr,
- u8 encr_type)
-{
- struct mwl8k_cmd_update_encryption *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
- memcpy(cmd->mac_addr, addr, ETH_ALEN);
- cmd->encr_type = encr_type;
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
- u8 *addr,
- struct ieee80211_key_conf *key)
-{
- cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->length = cpu_to_le16(sizeof(*cmd) -
- offsetof(struct mwl8k_cmd_set_key, length));
- cmd->key_id = cpu_to_le32(key->keyidx);
- cmd->key_len = cpu_to_le16(key->keylen);
- memcpy(cmd->mac_addr, addr, ETH_ALEN);
-
- switch (key->cipher) {
- case WLAN_CIPHER_SUITE_WEP40:
- case WLAN_CIPHER_SUITE_WEP104:
- cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
- if (key->keyidx == 0)
- cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
-
- break;
- case WLAN_CIPHER_SUITE_TKIP:
- cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
- cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
- ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
- : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
- cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
- | MWL8K_KEY_FLAG_TSC_VALID);
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
- cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
- ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
- : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
- break;
- default:
- return -ENOTSUPP;
- }
-
- return 0;
-}
-
-static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- u8 *addr,
- struct ieee80211_key_conf *key)
-{
- struct mwl8k_cmd_set_key *cmd;
- int rc;
- int keymlen;
- u32 action;
- u8 idx;
- struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
- if (rc < 0)
- goto done;
-
- idx = key->keyidx;
-
- if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
- action = MWL8K_ENCR_SET_KEY;
- else
- action = MWL8K_ENCR_SET_GROUP_KEY;
-
- switch (key->cipher) {
- case WLAN_CIPHER_SUITE_WEP40:
- case WLAN_CIPHER_SUITE_WEP104:
- if (!mwl8k_vif->wep_key_conf[idx].enabled) {
- memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
- sizeof(*key) + key->keylen);
- mwl8k_vif->wep_key_conf[idx].enabled = 1;
- }
-
- keymlen = key->keylen;
- action = MWL8K_ENCR_SET_KEY;
- break;
- case WLAN_CIPHER_SUITE_TKIP:
- keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- keymlen = key->keylen;
- break;
- default:
- rc = -ENOTSUPP;
- goto done;
- }
-
- memcpy(cmd->key_material, key->key, keymlen);
- cmd->action = cpu_to_le32(action);
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
-done:
- kfree(cmd);
-
- return rc;
-}
-
-static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- u8 *addr,
- struct ieee80211_key_conf *key)
-{
- struct mwl8k_cmd_set_key *cmd;
- int rc;
- struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
- if (rc < 0)
- goto done;
-
- if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
- key->cipher == WLAN_CIPHER_SUITE_WEP104)
- mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
-
- cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
-
- rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
-done:
- kfree(cmd);
-
- return rc;
-}
-
-static int mwl8k_set_key(struct ieee80211_hw *hw,
- enum set_key_cmd cmd_param,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- struct ieee80211_key_conf *key)
-{
- int rc = 0;
- u8 encr_type;
- u8 *addr;
- struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
- struct mwl8k_priv *priv = hw->priv;
-
- if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
- return -EOPNOTSUPP;
-
- if (sta == NULL)
- addr = vif->addr;
- else
- addr = sta->addr;
-
- if (cmd_param == SET_KEY) {
- rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
- if (rc)
- goto out;
-
- if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
- || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
- encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
- else
- encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
-
- rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
- encr_type);
- if (rc)
- goto out;
-
- mwl8k_vif->is_hw_crypto_enabled = true;
-
- } else {
- rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
-
- if (rc)
- goto out;
- }
-out:
- return rc;
-}
-
-/*
- * CMD_UPDATE_STADB.
- */
-struct ewc_ht_info {
- __le16 control1;
- __le16 control2;
- __le16 control3;
-} __packed;
-
-struct peer_capability_info {
- /* Peer type - AP vs. STA. */
- __u8 peer_type;
-
- /* Basic 802.11 capabilities from assoc resp. */
- __le16 basic_caps;
-
- /* Set if peer supports 802.11n high throughput (HT). */
- __u8 ht_support;
-
- /* Valid if HT is supported. */
- __le16 ht_caps;
- __u8 extended_ht_caps;
- struct ewc_ht_info ewc_info;
-
- /* Legacy rate table. Intersection of our rates and peer rates. */
- __u8 legacy_rates[12];
-
- /* HT rate table. Intersection of our rates and peer rates. */
- __u8 ht_rates[16];
- __u8 pad[16];
-
- /* If set, interoperability mode, no proprietary extensions. */
- __u8 interop;
- __u8 pad2;
- __u8 station_id;
- __le16 amsdu_enabled;
-} __packed;
-
-struct mwl8k_cmd_update_stadb {
- struct mwl8k_cmd_pkt header;
-
- /* See STADB_ACTION_TYPE */
- __le32 action;
-
- /* Peer MAC address */
- __u8 peer_addr[ETH_ALEN];
-
- __le32 reserved;
-
- /* Peer info - valid during add/update. */
- struct peer_capability_info peer_info;
-} __packed;
-
-#define MWL8K_STA_DB_MODIFY_ENTRY 1
-#define MWL8K_STA_DB_DEL_ENTRY 2
-
-/* Peer Entry flags - used to define the type of the peer node */
-#define MWL8K_PEER_TYPE_ACCESSPOINT 2
-
-static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
-{
- struct mwl8k_cmd_update_stadb *cmd;
- struct peer_capability_info *p;
- u32 rates;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
- memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
-
- p = &cmd->peer_info;
- p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
- p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
- p->ht_support = sta->ht_cap.ht_supported;
- p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
- p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
- ((sta->ht_cap.ampdu_density & 7) << 2);
- if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
- rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
- else
- rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
- legacy_rate_mask_to_array(p->legacy_rates, rates);
- memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
- p->interop = 1;
- p->amsdu_enabled = 0;
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- if (!rc)
- rc = p->station_id;
- kfree(cmd);
-
- return rc;
-}
-
-static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u8 *addr)
-{
- struct mwl8k_cmd_update_stadb *cmd;
- int rc;
-
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- return -ENOMEM;
-
- cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
- cmd->header.length = cpu_to_le16(sizeof(*cmd));
- cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
- memcpy(cmd->peer_addr, addr, ETH_ALEN);
-
- rc = mwl8k_post_cmd(hw, &cmd->header);
- kfree(cmd);
-
- return rc;
-}
-
-
-/*
- * Interrupt handling.
- */
-static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
-{
- struct ieee80211_hw *hw = dev_id;
- struct mwl8k_priv *priv = hw->priv;
- u32 status;
-
- status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
- if (!status)
- return IRQ_NONE;
-
- if (status & MWL8K_A2H_INT_TX_DONE) {
- status &= ~MWL8K_A2H_INT_TX_DONE;
- tasklet_schedule(&priv->poll_tx_task);
- }
-
- if (status & MWL8K_A2H_INT_RX_READY) {
- status &= ~MWL8K_A2H_INT_RX_READY;
- tasklet_schedule(&priv->poll_rx_task);
- }
-
- if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
- iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
- priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
-
- atomic_inc(&priv->watchdog_event_pending);
- status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
- ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
- }
-
- if (status)
- iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
-
- if (status & MWL8K_A2H_INT_OPC_DONE) {
- if (priv->hostcmd_wait != NULL)
- complete(priv->hostcmd_wait);
- }
-
- if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
- if (!mutex_is_locked(&priv->fw_mutex) &&
- priv->radio_on && priv->pending_tx_pkts)
- mwl8k_tx_start(priv);
- }
-
- return IRQ_HANDLED;
-}
-
-static void mwl8k_tx_poll(unsigned long data)
-{
- struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
- struct mwl8k_priv *priv = hw->priv;
- int limit;
- int i;
-
- limit = 32;
-
- spin_lock_bh(&priv->tx_lock);
-
- for (i = 0; i < mwl8k_tx_queues(priv); i++)
- limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
-
- if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
- complete(priv->tx_wait);
- priv->tx_wait = NULL;
- }
-
- spin_unlock_bh(&priv->tx_lock);
-
- if (limit) {
- writel(~MWL8K_A2H_INT_TX_DONE,
- priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
- } else {
- tasklet_schedule(&priv->poll_tx_task);
- }
-}
-
-static void mwl8k_rx_poll(unsigned long data)
-{
- struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
- struct mwl8k_priv *priv = hw->priv;
- int limit;
-
- limit = 32;
- limit -= rxq_process(hw, 0, limit);
- limit -= rxq_refill(hw, 0, limit);
-
- if (limit) {
- writel(~MWL8K_A2H_INT_RX_READY,
- priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
- } else {
- tasklet_schedule(&priv->poll_rx_task);
- }
-}
-
-
-/*
- * Core driver operations.
- */
-static void mwl8k_tx(struct ieee80211_hw *hw,
- struct ieee80211_tx_control *control,
- struct sk_buff *skb)
-{
- struct mwl8k_priv *priv = hw->priv;
- int index = skb_get_queue_mapping(skb);
-
- if (!priv->radio_on) {
- wiphy_debug(hw->wiphy,
- "dropped TX frame since radio disabled\n");
- dev_kfree_skb(skb);
- return;
- }
-
- mwl8k_txq_xmit(hw, index, control->sta, skb);
-}
-
-static int mwl8k_start(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- int rc;
-
- rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
- IRQF_SHARED, MWL8K_NAME, hw);
- if (rc) {
- priv->irq = -1;
- wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
- return -EIO;
- }
- priv->irq = priv->pdev->irq;
-
- /* Enable TX reclaim and RX tasklets. */
- tasklet_enable(&priv->poll_tx_task);
- tasklet_enable(&priv->poll_rx_task);
-
- /* Enable interrupts */
- iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- iowrite32(MWL8K_A2H_EVENTS,
- priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
-
- rc = mwl8k_fw_lock(hw);
- if (!rc) {
- rc = mwl8k_cmd_radio_enable(hw);
-
- if (!priv->ap_fw) {
- if (!rc)
- rc = mwl8k_cmd_enable_sniffer(hw, 0);
-
- if (!rc)
- rc = mwl8k_cmd_set_pre_scan(hw);
-
- if (!rc)
- rc = mwl8k_cmd_set_post_scan(hw,
- "\x00\x00\x00\x00\x00\x00");
- }
-
- if (!rc)
- rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
-
- if (!rc)
- rc = mwl8k_cmd_set_wmm_mode(hw, 0);
-
- mwl8k_fw_unlock(hw);
- }
-
- if (rc) {
- iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- free_irq(priv->pdev->irq, hw);
- priv->irq = -1;
- tasklet_disable(&priv->poll_tx_task);
- tasklet_disable(&priv->poll_rx_task);
- } else {
- ieee80211_wake_queues(hw);
- }
-
- return rc;
-}
-
-static void mwl8k_stop(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- int i;
-
- if (!priv->hw_restart_in_progress)
- mwl8k_cmd_radio_disable(hw);
-
- ieee80211_stop_queues(hw);
-
- /* Disable interrupts */
- iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- if (priv->irq != -1) {
- free_irq(priv->pdev->irq, hw);
- priv->irq = -1;
- }
-
- /* Stop finalize join worker */
- cancel_work_sync(&priv->finalize_join_worker);
- cancel_work_sync(&priv->watchdog_ba_handle);
- if (priv->beacon_skb != NULL)
- dev_kfree_skb(priv->beacon_skb);
-
- /* Stop TX reclaim and RX tasklets. */
- tasklet_disable(&priv->poll_tx_task);
- tasklet_disable(&priv->poll_rx_task);
-
- /* Return all skbs to mac80211 */
- for (i = 0; i < mwl8k_tx_queues(priv); i++)
- mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
-}
-
-static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
-
-static int mwl8k_add_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_vif *mwl8k_vif;
- u32 macids_supported;
- int macid, rc;
- struct mwl8k_device_info *di;
-
- /*
- * Reject interface creation if sniffer mode is active, as
- * STA operation is mutually exclusive with hardware sniffer
- * mode. (Sniffer mode is only used on STA firmware.)
- */
- if (priv->sniffer_enabled) {
- wiphy_info(hw->wiphy,
- "unable to create STA interface because sniffer mode is enabled\n");
- return -EINVAL;
- }
-
- di = priv->device_info;
- switch (vif->type) {
- case NL80211_IFTYPE_AP:
- if (!priv->ap_fw && di->fw_image_ap) {
- /* we must load the ap fw to meet this request */
- if (!list_empty(&priv->vif_list))
- return -EBUSY;
- rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
- if (rc)
- return rc;
- }
- macids_supported = priv->ap_macids_supported;
- break;
- case NL80211_IFTYPE_STATION:
- if (priv->ap_fw && di->fw_image_sta) {
- if (!list_empty(&priv->vif_list)) {
- wiphy_warn(hw->wiphy, "AP interface is running.\n"
- "Adding STA interface for WDS");
- } else {
- /* we must load the sta fw to
- * meet this request.
- */
- rc = mwl8k_reload_firmware(hw,
- di->fw_image_sta);
- if (rc)
- return rc;
- }
- }
- macids_supported = priv->sta_macids_supported;
- break;
- default:
- return -EINVAL;
- }
-
- macid = ffs(macids_supported & ~priv->macids_used);
- if (!macid--)
- return -EBUSY;
-
- /* Setup driver private area. */
- mwl8k_vif = MWL8K_VIF(vif);
- memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
- mwl8k_vif->vif = vif;
- mwl8k_vif->macid = macid;
- mwl8k_vif->seqno = 0;
- memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
- mwl8k_vif->is_hw_crypto_enabled = false;
-
- /* Set the mac address. */
- mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
-
- if (vif->type == NL80211_IFTYPE_AP)
- mwl8k_cmd_set_new_stn_add_self(hw, vif);
-
- priv->macids_used |= 1 << mwl8k_vif->macid;
- list_add_tail(&mwl8k_vif->list, &priv->vif_list);
-
- return 0;
-}
-
-static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
-{
- /* Has ieee80211_restart_hw re-added the removed interfaces? */
- if (!priv->macids_used)
- return;
-
- priv->macids_used &= ~(1 << vif->macid);
- list_del(&vif->list);
-}
-
-static void mwl8k_remove_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
-
- if (vif->type == NL80211_IFTYPE_AP)
- mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
-
- mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
-
- mwl8k_remove_vif(priv, mwl8k_vif);
-}
-
-static void mwl8k_hw_restart_work(struct work_struct *work)
-{
- struct mwl8k_priv *priv =
- container_of(work, struct mwl8k_priv, fw_reload);
- struct ieee80211_hw *hw = priv->hw;
- struct mwl8k_device_info *di;
- int rc;
-
- /* If some command is waiting for a response, clear it */
- if (priv->hostcmd_wait != NULL) {
- complete(priv->hostcmd_wait);
- priv->hostcmd_wait = NULL;
- }
-
- priv->hw_restart_owner = current;
- di = priv->device_info;
- mwl8k_fw_lock(hw);
-
- if (priv->ap_fw)
- rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
- else
- rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
-
- if (rc)
- goto fail;
-
- priv->hw_restart_owner = NULL;
- priv->hw_restart_in_progress = false;
-
- /*
- * This unlock will wake up the queues and
- * also opens the command path for other
- * commands
- */
- mwl8k_fw_unlock(hw);
-
- ieee80211_restart_hw(hw);
-
- wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
-
- return;
-fail:
- mwl8k_fw_unlock(hw);
-
- wiphy_err(hw->wiphy, "Firmware restart failed\n");
-}
-
-static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
-{
- struct ieee80211_conf *conf = &hw->conf;
- struct mwl8k_priv *priv = hw->priv;
- int rc;
-
- rc = mwl8k_fw_lock(hw);
- if (rc)
- return rc;
-
- if (conf->flags & IEEE80211_CONF_IDLE)
- rc = mwl8k_cmd_radio_disable(hw);
- else
- rc = mwl8k_cmd_radio_enable(hw);
- if (rc)
- goto out;
-
- if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
- rc = mwl8k_cmd_set_rf_channel(hw, conf);
- if (rc)
- goto out;
- }
-
- if (conf->power_level > 18)
- conf->power_level = 18;
-
- if (priv->ap_fw) {
-
- if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
- rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
- if (rc)
- goto out;
- }
-
-
- } else {
- rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
- if (rc)
- goto out;
- rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
- }
-
-out:
- mwl8k_fw_unlock(hw);
-
- return rc;
-}
-
-static void
-mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *info, u32 changed)
-{
- struct mwl8k_priv *priv = hw->priv;
- u32 ap_legacy_rates = 0;
- u8 ap_mcs_rates[16];
- int rc;
-
- if (mwl8k_fw_lock(hw))
- return;
-
- /*
- * No need to capture a beacon if we're no longer associated.
- */
- if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
- priv->capture_beacon = false;
-
- /*
- * Get the AP's legacy and MCS rates.
- */
- if (vif->bss_conf.assoc) {
- struct ieee80211_sta *ap;
-
- rcu_read_lock();
-
- ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
- if (ap == NULL) {
- rcu_read_unlock();
- goto out;
- }
-
- if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) {
- ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
- } else {
- ap_legacy_rates =
- ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
- }
- memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
-
- rcu_read_unlock();
-
- if (changed & BSS_CHANGED_ASSOC) {
- if (!priv->ap_fw) {
- rc = mwl8k_cmd_set_rate(hw, vif,
- ap_legacy_rates,
- ap_mcs_rates);
- if (rc)
- goto out;
-
- rc = mwl8k_cmd_use_fixed_rate_sta(hw);
- if (rc)
- goto out;
- } else {
- int idx;
- int rate;
-
- /* Use AP firmware specific rate command.
- */
- idx = ffs(vif->bss_conf.basic_rates);
- if (idx)
- idx--;
-
- if (hw->conf.chandef.chan->band ==
- IEEE80211_BAND_2GHZ)
- rate = mwl8k_rates_24[idx].hw_value;
- else
- rate = mwl8k_rates_50[idx].hw_value;
-
- mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
- }
- }
- }
-
- if (changed & BSS_CHANGED_ERP_PREAMBLE) {
- rc = mwl8k_set_radio_preamble(hw,
- vif->bss_conf.use_short_preamble);
- if (rc)
- goto out;
- }
-
- if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
- rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
- if (rc)
- goto out;
- }
-
- if (vif->bss_conf.assoc && !priv->ap_fw &&
- (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
- BSS_CHANGED_HT))) {
- rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
- if (rc)
- goto out;
- }
-
- if (vif->bss_conf.assoc &&
- (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
- /*
- * Finalize the join. Tell rx handler to process
- * next beacon from our BSSID.
- */
- memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
- priv->capture_beacon = true;
- }
-
-out:
- mwl8k_fw_unlock(hw);
-}
-
-static void
-mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *info, u32 changed)
-{
- int rc;
-
- if (mwl8k_fw_lock(hw))
- return;
-
- if (changed & BSS_CHANGED_ERP_PREAMBLE) {
- rc = mwl8k_set_radio_preamble(hw,
- vif->bss_conf.use_short_preamble);
- if (rc)
- goto out;
- }
-
- if (changed & BSS_CHANGED_BASIC_RATES) {
- int idx;
- int rate;
-
- /*
- * Use lowest supported basic rate for multicasts
- * and management frames (such as probe responses --
- * beacons will always go out at 1 Mb/s).
- */
- idx = ffs(vif->bss_conf.basic_rates);
- if (idx)
- idx--;
-
- if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
- rate = mwl8k_rates_24[idx].hw_value;
- else
- rate = mwl8k_rates_50[idx].hw_value;
-
- mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
- }
-
- if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
- struct sk_buff *skb;
-
- skb = ieee80211_beacon_get(hw, vif);
- if (skb != NULL) {
- mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
- kfree_skb(skb);
- }
- }
-
- if (changed & BSS_CHANGED_BEACON_ENABLED)
- mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
-
-out:
- mwl8k_fw_unlock(hw);
-}
-
-static void
-mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *info, u32 changed)
-{
- if (vif->type == NL80211_IFTYPE_STATION)
- mwl8k_bss_info_changed_sta(hw, vif, info, changed);
- if (vif->type == NL80211_IFTYPE_AP)
- mwl8k_bss_info_changed_ap(hw, vif, info, changed);
-}
-
-static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
- struct netdev_hw_addr_list *mc_list)
-{
- struct mwl8k_cmd_pkt *cmd;
-
- /*
- * Synthesize and return a command packet that programs the
- * hardware multicast address filter. At this point we don't
- * know whether FIF_ALLMULTI is being requested, but if it is,
- * we'll end up throwing this packet away and creating a new
- * one in mwl8k_configure_filter().
- */
- cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
-
- return (unsigned long)cmd;
-}
-
-static int
-mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
- unsigned int changed_flags,
- unsigned int *total_flags)
-{
- struct mwl8k_priv *priv = hw->priv;
-
- /*
- * Hardware sniffer mode is mutually exclusive with STA
- * operation, so refuse to enable sniffer mode if a STA
- * interface is active.
- */
- if (!list_empty(&priv->vif_list)) {
- if (net_ratelimit())
- wiphy_info(hw->wiphy,
- "not enabling sniffer mode because STA interface is active\n");
- return 0;
- }
-
- if (!priv->sniffer_enabled) {
- if (mwl8k_cmd_enable_sniffer(hw, 1))
- return 0;
- priv->sniffer_enabled = true;
- }
-
- *total_flags &= FIF_ALLMULTI |
- FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
- FIF_OTHER_BSS;
-
- return 1;
-}
-
-static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
-{
- if (!list_empty(&priv->vif_list))
- return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
-
- return NULL;
-}
-
-static void mwl8k_configure_filter(struct ieee80211_hw *hw,
- unsigned int changed_flags,
- unsigned int *total_flags,
- u64 multicast)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
-
- /*
- * AP firmware doesn't allow fine-grained control over
- * the receive filter.
- */
- if (priv->ap_fw) {
- *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
- kfree(cmd);
- return;
- }
-
- /*
- * Enable hardware sniffer mode if FIF_CONTROL or
- * FIF_OTHER_BSS is requested.
- */
- if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
- mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
- kfree(cmd);
- return;
- }
-
- /* Clear unsupported feature flags */
- *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
-
- if (mwl8k_fw_lock(hw)) {
- kfree(cmd);
- return;
- }
-
- if (priv->sniffer_enabled) {
- mwl8k_cmd_enable_sniffer(hw, 0);
- priv->sniffer_enabled = false;
- }
-
- if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
- if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
- /*
- * Disable the BSS filter.
- */
- mwl8k_cmd_set_pre_scan(hw);
- } else {
- struct mwl8k_vif *mwl8k_vif;
- const u8 *bssid;
-
- /*
- * Enable the BSS filter.
- *
- * If there is an active STA interface, use that
- * interface's BSSID, otherwise use a dummy one
- * (where the OUI part needs to be nonzero for
- * the BSSID to be accepted by POST_SCAN).
- */
- mwl8k_vif = mwl8k_first_vif(priv);
- if (mwl8k_vif != NULL)
- bssid = mwl8k_vif->vif->bss_conf.bssid;
- else
- bssid = "\x01\x00\x00\x00\x00\x00";
-
- mwl8k_cmd_set_post_scan(hw, bssid);
- }
- }
-
- /*
- * If FIF_ALLMULTI is being requested, throw away the command
- * packet that ->prepare_multicast() built and replace it with
- * a command packet that enables reception of all multicast
- * packets.
- */
- if (*total_flags & FIF_ALLMULTI) {
- kfree(cmd);
- cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
- }
-
- if (cmd != NULL) {
- mwl8k_post_cmd(hw, cmd);
- kfree(cmd);
- }
-
- mwl8k_fw_unlock(hw);
-}
-
-static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
-{
- return mwl8k_cmd_set_rts_threshold(hw, value);
-}
-
-static int mwl8k_sta_remove(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
-{
- struct mwl8k_priv *priv = hw->priv;
-
- if (priv->ap_fw)
- return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
- else
- return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
-}
-
-static int mwl8k_sta_add(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
-{
- struct mwl8k_priv *priv = hw->priv;
- int ret;
- int i;
- struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
- struct ieee80211_key_conf *key;
-
- if (!priv->ap_fw) {
- ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
- if (ret >= 0) {
- MWL8K_STA(sta)->peer_id = ret;
- if (sta->ht_cap.ht_supported)
- MWL8K_STA(sta)->is_ampdu_allowed = true;
- ret = 0;
- }
-
- } else {
- ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
- }
-
- for (i = 0; i < NUM_WEP_KEYS; i++) {
- key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
- if (mwl8k_vif->wep_key_conf[i].enabled)
- mwl8k_set_key(hw, SET_KEY, vif, sta, key);
- }
- return ret;
-}
-
-static int mwl8k_conf_tx(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u16 queue,
- const struct ieee80211_tx_queue_params *params)
-{
- struct mwl8k_priv *priv = hw->priv;
- int rc;
-
- rc = mwl8k_fw_lock(hw);
- if (!rc) {
- BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
- memcpy(&priv->wmm_params[queue], params, sizeof(*params));
-
- if (!priv->wmm_enabled)
- rc = mwl8k_cmd_set_wmm_mode(hw, 1);
-
- if (!rc) {
- int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
- rc = mwl8k_cmd_set_edca_params(hw, q,
- params->cw_min,
- params->cw_max,
- params->aifs,
- params->txop);
- }
-
- mwl8k_fw_unlock(hw);
- }
-
- return rc;
-}
-
-static int mwl8k_get_stats(struct ieee80211_hw *hw,
- struct ieee80211_low_level_stats *stats)
-{
- return mwl8k_cmd_get_stat(hw, stats);
-}
-
-static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
- struct survey_info *survey)
-{
- struct mwl8k_priv *priv = hw->priv;
- struct ieee80211_conf *conf = &hw->conf;
- struct ieee80211_supported_band *sband;
-
- if (priv->ap_fw) {
- sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
-
- if (sband && idx >= sband->n_channels) {
- idx -= sband->n_channels;
- sband = NULL;
- }
-
- if (!sband)
- sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
-
- if (!sband || idx >= sband->n_channels)
- return -ENOENT;
-
- memcpy(survey, &priv->survey[idx], sizeof(*survey));
- survey->channel = &sband->channels[idx];
-
- return 0;
- }
-
- if (idx != 0)
- return -ENOENT;
-
- survey->channel = conf->chandef.chan;
- survey->filled = SURVEY_INFO_NOISE_DBM;
- survey->noise = priv->noise;
-
- return 0;
-}
-
-#define MAX_AMPDU_ATTEMPTS 5
-
-static int
-mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
- enum ieee80211_ampdu_mlme_action action,
- struct ieee80211_sta *sta, u16 tid, u16 *ssn,
- u8 buf_size, bool amsdu)
-{
-
- int i, rc = 0;
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_ampdu_stream *stream;
- u8 *addr = sta->addr, idx;
- struct mwl8k_sta *sta_info = MWL8K_STA(sta);
-
- if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION))
- return -ENOTSUPP;
-
- spin_lock(&priv->stream_lock);
- stream = mwl8k_lookup_stream(hw, addr, tid);
-
- switch (action) {
- case IEEE80211_AMPDU_RX_START:
- case IEEE80211_AMPDU_RX_STOP:
- break;
- case IEEE80211_AMPDU_TX_START:
- /* By the time we get here the hw queues may contain outgoing
- * packets for this RA/TID that are not part of this BA
- * session. The hw will assign sequence numbers to these
- * packets as they go out. So if we query the hw for its next
- * sequence number and use that for the SSN here, it may end up
- * being wrong, which will lead to sequence number mismatch at
- * the recipient. To avoid this, we reset the sequence number
- * to O for the first MPDU in this BA stream.
- */
- *ssn = 0;
- if (stream == NULL) {
- /* This means that somebody outside this driver called
- * ieee80211_start_tx_ba_session. This is unexpected
- * because we do our own rate control. Just warn and
- * move on.
- */
- wiphy_warn(hw->wiphy, "Unexpected call to %s. "
- "Proceeding anyway.\n", __func__);
- stream = mwl8k_add_stream(hw, sta, tid);
- }
- if (stream == NULL) {
- wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
- rc = -EBUSY;
- break;
- }
- stream->state = AMPDU_STREAM_IN_PROGRESS;
-
- /* Release the lock before we do the time consuming stuff */
- spin_unlock(&priv->stream_lock);
- for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
-
- /* Check if link is still valid */
- if (!sta_info->is_ampdu_allowed) {
- spin_lock(&priv->stream_lock);
- mwl8k_remove_stream(hw, stream);
- spin_unlock(&priv->stream_lock);
- return -EBUSY;
- }
-
- rc = mwl8k_check_ba(hw, stream, vif);
-
- /* If HW restart is in progress mwl8k_post_cmd will
- * return -EBUSY. Avoid retrying mwl8k_check_ba in
- * such cases
- */
- if (!rc || rc == -EBUSY)
- break;
- /*
- * HW queues take time to be flushed, give them
- * sufficient time
- */
-
- msleep(1000);
- }
- spin_lock(&priv->stream_lock);
- if (rc) {
- wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
- " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
- mwl8k_remove_stream(hw, stream);
- rc = -EBUSY;
- break;
- }
- ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
- break;
- case IEEE80211_AMPDU_TX_STOP_CONT:
- case IEEE80211_AMPDU_TX_STOP_FLUSH:
- case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
- if (stream) {
- if (stream->state == AMPDU_STREAM_ACTIVE) {
- idx = stream->idx;
- spin_unlock(&priv->stream_lock);
- mwl8k_destroy_ba(hw, idx);
- spin_lock(&priv->stream_lock);
- }
- mwl8k_remove_stream(hw, stream);
- }
- ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
- break;
- case IEEE80211_AMPDU_TX_OPERATIONAL:
- BUG_ON(stream == NULL);
- BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
- spin_unlock(&priv->stream_lock);
- rc = mwl8k_create_ba(hw, stream, buf_size, vif);
- spin_lock(&priv->stream_lock);
- if (!rc)
- stream->state = AMPDU_STREAM_ACTIVE;
- else {
- idx = stream->idx;
- spin_unlock(&priv->stream_lock);
- mwl8k_destroy_ba(hw, idx);
- spin_lock(&priv->stream_lock);
- wiphy_debug(hw->wiphy,
- "Failed adding stream for sta %pM tid %d\n",
- addr, tid);
- mwl8k_remove_stream(hw, stream);
- }
- break;
-
- default:
- rc = -ENOTSUPP;
- }
-
- spin_unlock(&priv->stream_lock);
- return rc;
-}
-
-static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- const u8 *mac_addr)
-{
- struct mwl8k_priv *priv = hw->priv;
- u8 tmp;
-
- if (!priv->ap_fw)
- return;
-
- /* clear all stats */
- priv->channel_time = 0;
- ioread32(priv->regs + BBU_RXRDY_CNT_REG);
- ioread32(priv->regs + NOK_CCA_CNT_REG);
- mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
-
- priv->sw_scan_start = true;
-}
-
-static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
-{
- struct mwl8k_priv *priv = hw->priv;
- u8 tmp;
-
- if (!priv->ap_fw)
- return;
-
- priv->sw_scan_start = false;
-
- /* clear all stats */
- priv->channel_time = 0;
- ioread32(priv->regs + BBU_RXRDY_CNT_REG);
- ioread32(priv->regs + NOK_CCA_CNT_REG);
- mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
-}
-
-static const struct ieee80211_ops mwl8k_ops = {
- .tx = mwl8k_tx,
- .start = mwl8k_start,
- .stop = mwl8k_stop,
- .add_interface = mwl8k_add_interface,
- .remove_interface = mwl8k_remove_interface,
- .config = mwl8k_config,
- .bss_info_changed = mwl8k_bss_info_changed,
- .prepare_multicast = mwl8k_prepare_multicast,
- .configure_filter = mwl8k_configure_filter,
- .set_key = mwl8k_set_key,
- .set_rts_threshold = mwl8k_set_rts_threshold,
- .sta_add = mwl8k_sta_add,
- .sta_remove = mwl8k_sta_remove,
- .conf_tx = mwl8k_conf_tx,
- .get_stats = mwl8k_get_stats,
- .get_survey = mwl8k_get_survey,
- .ampdu_action = mwl8k_ampdu_action,
- .sw_scan_start = mwl8k_sw_scan_start,
- .sw_scan_complete = mwl8k_sw_scan_complete,
-};
-
-static void mwl8k_finalize_join_worker(struct work_struct *work)
-{
- struct mwl8k_priv *priv =
- container_of(work, struct mwl8k_priv, finalize_join_worker);
- struct sk_buff *skb = priv->beacon_skb;
- struct ieee80211_mgmt *mgmt = (void *)skb->data;
- int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
- const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
- mgmt->u.beacon.variable, len);
- int dtim_period = 1;
-
- if (tim && tim[1] >= 2)
- dtim_period = tim[3];
-
- mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
-
- dev_kfree_skb(skb);
- priv->beacon_skb = NULL;
-}
-
-enum {
- MWL8363 = 0,
- MWL8687,
- MWL8366,
- MWL8764,
-};
-
-#define MWL8K_8366_AP_FW_API 3
-#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
-#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
-
-#define MWL8K_8764_AP_FW_API 1
-#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
-#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
-
-static struct mwl8k_device_info mwl8k_info_tbl[] = {
- [MWL8363] = {
- .part_name = "88w8363",
- .helper_image = "mwl8k/helper_8363.fw",
- .fw_image_sta = "mwl8k/fmimage_8363.fw",
- },
- [MWL8687] = {
- .part_name = "88w8687",
- .helper_image = "mwl8k/helper_8687.fw",
- .fw_image_sta = "mwl8k/fmimage_8687.fw",
- },
- [MWL8366] = {
- .part_name = "88w8366",
- .helper_image = "mwl8k/helper_8366.fw",
- .fw_image_sta = "mwl8k/fmimage_8366.fw",
- .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
- .fw_api_ap = MWL8K_8366_AP_FW_API,
- .ap_rxd_ops = &rxd_ap_ops,
- },
- [MWL8764] = {
- .part_name = "88w8764",
- .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
- .fw_api_ap = MWL8K_8764_AP_FW_API,
- .ap_rxd_ops = &rxd_ap_ops,
- },
-};
-
-MODULE_FIRMWARE("mwl8k/helper_8363.fw");
-MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
-MODULE_FIRMWARE("mwl8k/helper_8687.fw");
-MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
-MODULE_FIRMWARE("mwl8k/helper_8366.fw");
-MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
-MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
-
-static const struct pci_device_id mwl8k_pci_id_table[] = {
- { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
- { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
- { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
- { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
- { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
- { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
- { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
- { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
- { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
- { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
- { },
-};
-MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
-
-static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
-{
- int rc;
- printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
- "Trying alternative firmware %s\n", pci_name(priv->pdev),
- priv->fw_pref, priv->fw_alt);
- rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
- if (rc) {
- printk(KERN_ERR "%s: Error requesting alt fw %s\n",
- pci_name(priv->pdev), priv->fw_alt);
- return rc;
- }
- return 0;
-}
-
-static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
-static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
-{
- struct mwl8k_priv *priv = context;
- struct mwl8k_device_info *di = priv->device_info;
- int rc;
-
- switch (priv->fw_state) {
- case FW_STATE_INIT:
- if (!fw) {
- printk(KERN_ERR "%s: Error requesting helper fw %s\n",
- pci_name(priv->pdev), di->helper_image);
- goto fail;
- }
- priv->fw_helper = fw;
- rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
- true);
- if (rc && priv->fw_alt) {
- rc = mwl8k_request_alt_fw(priv);
- if (rc)
- goto fail;
- priv->fw_state = FW_STATE_LOADING_ALT;
- } else if (rc)
- goto fail;
- else
- priv->fw_state = FW_STATE_LOADING_PREF;
- break;
-
- case FW_STATE_LOADING_PREF:
- if (!fw) {
- if (priv->fw_alt) {
- rc = mwl8k_request_alt_fw(priv);
- if (rc)
- goto fail;
- priv->fw_state = FW_STATE_LOADING_ALT;
- } else
- goto fail;
- } else {
- priv->fw_ucode = fw;
- rc = mwl8k_firmware_load_success(priv);
- if (rc)
- goto fail;
- else
- complete(&priv->firmware_loading_complete);
- }
- break;
-
- case FW_STATE_LOADING_ALT:
- if (!fw) {
- printk(KERN_ERR "%s: Error requesting alt fw %s\n",
- pci_name(priv->pdev), di->helper_image);
- goto fail;
- }
- priv->fw_ucode = fw;
- rc = mwl8k_firmware_load_success(priv);
- if (rc)
- goto fail;
- else
- complete(&priv->firmware_loading_complete);
- break;
-
- default:
- printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
- MWL8K_NAME, priv->fw_state);
- BUG_ON(1);
- }
-
- return;
-
-fail:
- priv->fw_state = FW_STATE_ERROR;
- complete(&priv->firmware_loading_complete);
- device_release_driver(&priv->pdev->dev);
- mwl8k_release_firmware(priv);
-}
-
-#define MAX_RESTART_ATTEMPTS 1
-static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
- bool nowait)
-{
- struct mwl8k_priv *priv = hw->priv;
- int rc;
- int count = MAX_RESTART_ATTEMPTS;
-
-retry:
- /* Reset firmware and hardware */
- mwl8k_hw_reset(priv);
-
- /* Ask userland hotplug daemon for the device firmware */
- rc = mwl8k_request_firmware(priv, fw_image, nowait);
- if (rc) {
- wiphy_err(hw->wiphy, "Firmware files not found\n");
- return rc;
- }
-
- if (nowait)
- return rc;
-
- /* Load firmware into hardware */
- rc = mwl8k_load_firmware(hw);
- if (rc)
- wiphy_err(hw->wiphy, "Cannot start firmware\n");
-
- /* Reclaim memory once firmware is successfully loaded */
- mwl8k_release_firmware(priv);
-
- if (rc && count) {
- /* FW did not start successfully;
- * lets try one more time
- */
- count--;
- wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
- msleep(20);
- goto retry;
- }
-
- return rc;
-}
-
-static int mwl8k_init_txqs(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- int rc = 0;
- int i;
-
- for (i = 0; i < mwl8k_tx_queues(priv); i++) {
- rc = mwl8k_txq_init(hw, i);
- if (rc)
- break;
- if (priv->ap_fw)
- iowrite32(priv->txq[i].txd_dma,
- priv->sram + priv->txq_offset[i]);
- }
- return rc;
-}
-
-/* initialize hw after successfully loading a firmware image */
-static int mwl8k_probe_hw(struct ieee80211_hw *hw)
-{
- struct mwl8k_priv *priv = hw->priv;
- int rc = 0;
- int i;
-
- if (priv->ap_fw) {
- priv->rxd_ops = priv->device_info->ap_rxd_ops;
- if (priv->rxd_ops == NULL) {
- wiphy_err(hw->wiphy,
- "Driver does not have AP firmware image support for this hardware\n");
- rc = -ENOENT;
- goto err_stop_firmware;
- }
- } else {
- priv->rxd_ops = &rxd_sta_ops;
- }
-
- priv->sniffer_enabled = false;
- priv->wmm_enabled = false;
- priv->pending_tx_pkts = 0;
- atomic_set(&priv->watchdog_event_pending, 0);
-
- rc = mwl8k_rxq_init(hw, 0);
- if (rc)
- goto err_stop_firmware;
- rxq_refill(hw, 0, INT_MAX);
-
- /* For the sta firmware, we need to know the dma addresses of tx queues
- * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
- * prior to issuing this command. But for the AP case, we learn the
- * total number of queues from the result CMD_GET_HW_SPEC, so for this
- * case we must initialize the tx queues after.
- */
- priv->num_ampdu_queues = 0;
- if (!priv->ap_fw) {
- rc = mwl8k_init_txqs(hw);
- if (rc)
- goto err_free_queues;
- }
-
- iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
- iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
- MWL8K_A2H_INT_BA_WATCHDOG,
- priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
- iowrite32(MWL8K_A2H_INT_OPC_DONE,
- priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
-
- rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
- IRQF_SHARED, MWL8K_NAME, hw);
- if (rc) {
- wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
- goto err_free_queues;
- }
-
- /*
- * When hw restart is requested,
- * mac80211 will take care of clearing
- * the ampdu streams, so do not clear
- * the ampdu state here
- */
- if (!priv->hw_restart_in_progress)
- memset(priv->ampdu, 0, sizeof(priv->ampdu));
-
- /*
- * Temporarily enable interrupts. Initial firmware host
- * commands use interrupts and avoid polling. Disable
- * interrupts when done.
- */
- iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
-
- /* Get config data, mac addrs etc */
- if (priv->ap_fw) {
- rc = mwl8k_cmd_get_hw_spec_ap(hw);
- if (!rc)
- rc = mwl8k_init_txqs(hw);
- if (!rc)
- rc = mwl8k_cmd_set_hw_spec(hw);
- } else {
- rc = mwl8k_cmd_get_hw_spec_sta(hw);
- }
- if (rc) {
- wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
- goto err_free_irq;
- }
-
- /* Turn radio off */
- rc = mwl8k_cmd_radio_disable(hw);
- if (rc) {
- wiphy_err(hw->wiphy, "Cannot disable\n");
- goto err_free_irq;
- }
-
- /* Clear MAC address */
- rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
- if (rc) {
- wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
- goto err_free_irq;
- }
-
- /* Configure Antennas */
- rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
- if (rc)
- wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
- rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
- if (rc)
- wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
-
-
- /* Disable interrupts */
- iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- free_irq(priv->pdev->irq, hw);
-
- wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
- priv->device_info->part_name,
- priv->hw_rev, hw->wiphy->perm_addr,
- priv->ap_fw ? "AP" : "STA",
- (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
- (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
-
- return 0;
-
-err_free_irq:
- iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
- free_irq(priv->pdev->irq, hw);
-
-err_free_queues:
- for (i = 0; i < mwl8k_tx_queues(priv); i++)
- mwl8k_txq_deinit(hw, i);
- mwl8k_rxq_deinit(hw, 0);
-
-err_stop_firmware:
- mwl8k_hw_reset(priv);
-
- return rc;
-}
-
-/*
- * invoke mwl8k_reload_firmware to change the firmware image after the device
- * has already been registered
- */
-static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
-{
- int i, rc = 0;
- struct mwl8k_priv *priv = hw->priv;
- struct mwl8k_vif *vif, *tmp_vif;
-
- mwl8k_stop(hw);
- mwl8k_rxq_deinit(hw, 0);
-
- /*
- * All the existing interfaces are re-added by the ieee80211_reconfig;
- * which means driver should remove existing interfaces before calling
- * ieee80211_restart_hw
- */
- if (priv->hw_restart_in_progress)
- list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
- mwl8k_remove_vif(priv, vif);
-
- for (i = 0; i < mwl8k_tx_queues(priv); i++)
- mwl8k_txq_deinit(hw, i);
-
- rc = mwl8k_init_firmware(hw, fw_image, false);
- if (rc)
- goto fail;
-
- rc = mwl8k_probe_hw(hw);
- if (rc)
- goto fail;
-
- if (priv->hw_restart_in_progress)
- return rc;
-
- rc = mwl8k_start(hw);
- if (rc)
- goto fail;
-
- rc = mwl8k_config(hw, ~0);
- if (rc)
- goto fail;
-
- for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
- rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
- if (rc)
- goto fail;
- }
-
- return rc;
-
-fail:
- printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
- return rc;
-}
-
-static const struct ieee80211_iface_limit ap_if_limits[] = {
- { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
- { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
-};
-
-static const struct ieee80211_iface_combination ap_if_comb = {
- .limits = ap_if_limits,
- .n_limits = ARRAY_SIZE(ap_if_limits),
- .max_interfaces = 8,
- .num_different_channels = 1,
-};
-
-
-static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
-{
- struct ieee80211_hw *hw = priv->hw;
- int i, rc;
-
- rc = mwl8k_load_firmware(hw);
- mwl8k_release_firmware(priv);
- if (rc) {
- wiphy_err(hw->wiphy, "Cannot start firmware\n");
- return rc;
- }
-
- /*
- * Extra headroom is the size of the required DMA header
- * minus the size of the smallest 802.11 frame (CTS frame).
- */
- hw->extra_tx_headroom =
- sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
-
- hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
-
- hw->queues = MWL8K_TX_WMM_QUEUES;
-
- /* Set rssi values to dBm */
- ieee80211_hw_set(hw, SIGNAL_DBM);
- ieee80211_hw_set(hw, HAS_RATE_CONTROL);
-
- /*
- * Ask mac80211 to not to trigger PS mode
- * based on PM bit of incoming frames.
- */
- if (priv->ap_fw)
- ieee80211_hw_set(hw, AP_LINK_PS);
-
- hw->vif_data_size = sizeof(struct mwl8k_vif);
- hw->sta_data_size = sizeof(struct mwl8k_sta);
-
- priv->macids_used = 0;
- INIT_LIST_HEAD(&priv->vif_list);
-
- /* Set default radio state and preamble */
- priv->radio_on = false;
- priv->radio_short_preamble = false;
-
- /* Finalize join worker */
- INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
- /* Handle watchdog ba events */
- INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
- /* To reload the firmware if it crashes */
- INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
-
- /* TX reclaim and RX tasklets. */
- tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
- tasklet_disable(&priv->poll_tx_task);
- tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
- tasklet_disable(&priv->poll_rx_task);
-
- /* Power management cookie */
- priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
- if (priv->cookie == NULL)
- return -ENOMEM;
-
- mutex_init(&priv->fw_mutex);
- priv->fw_mutex_owner = NULL;
- priv->fw_mutex_depth = 0;
- priv->hostcmd_wait = NULL;
-
- spin_lock_init(&priv->tx_lock);
-
- spin_lock_init(&priv->stream_lock);
-
- priv->tx_wait = NULL;
-
- rc = mwl8k_probe_hw(hw);
- if (rc)
- goto err_free_cookie;
-
- hw->wiphy->interface_modes = 0;
-
- if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
- hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
- hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
- hw->wiphy->iface_combinations = &ap_if_comb;
- hw->wiphy->n_iface_combinations = 1;
- }
-
- if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
- hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
-
- rc = ieee80211_register_hw(hw);
- if (rc) {
- wiphy_err(hw->wiphy, "Cannot register device\n");
- goto err_unprobe_hw;
- }
-
- return 0;
-
-err_unprobe_hw:
- for (i = 0; i < mwl8k_tx_queues(priv); i++)
- mwl8k_txq_deinit(hw, i);
- mwl8k_rxq_deinit(hw, 0);
-
-err_free_cookie:
- if (priv->cookie != NULL)
- pci_free_consistent(priv->pdev, 4,
- priv->cookie, priv->cookie_dma);
-
- return rc;
-}
-static int mwl8k_probe(struct pci_dev *pdev,
- const struct pci_device_id *id)
-{
- static int printed_version;
- struct ieee80211_hw *hw;
- struct mwl8k_priv *priv;
- struct mwl8k_device_info *di;
- int rc;
-
- if (!printed_version) {
- printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
- printed_version = 1;
- }
-
-
- rc = pci_enable_device(pdev);
- if (rc) {
- printk(KERN_ERR "%s: Cannot enable new PCI device\n",
- MWL8K_NAME);
- return rc;
- }
-
- rc = pci_request_regions(pdev, MWL8K_NAME);
- if (rc) {
- printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
- MWL8K_NAME);
- goto err_disable_device;
- }
-
- pci_set_master(pdev);
-
-
- hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
- if (hw == NULL) {
- printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
- rc = -ENOMEM;
- goto err_free_reg;
- }
-
- SET_IEEE80211_DEV(hw, &pdev->dev);
- pci_set_drvdata(pdev, hw);
-
- priv = hw->priv;
- priv->hw = hw;
- priv->pdev = pdev;
- priv->device_info = &mwl8k_info_tbl[id->driver_data];
-
- if (id->driver_data == MWL8764)
- priv->is_8764 = true;
-
- priv->sram = pci_iomap(pdev, 0, 0x10000);
- if (priv->sram == NULL) {
- wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
- rc = -EIO;
- goto err_iounmap;
- }
-
- /*
- * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
- * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
- */
- priv->regs = pci_iomap(pdev, 1, 0x10000);
- if (priv->regs == NULL) {
- priv->regs = pci_iomap(pdev, 2, 0x10000);
- if (priv->regs == NULL) {
- wiphy_err(hw->wiphy, "Cannot map device registers\n");
- rc = -EIO;
- goto err_iounmap;
- }
- }
-
- /*
- * Choose the initial fw image depending on user input. If a second
- * image is available, make it the alternative image that will be
- * loaded if the first one fails.
- */
- init_completion(&priv->firmware_loading_complete);
- di = priv->device_info;
- if (ap_mode_default && di->fw_image_ap) {
- priv->fw_pref = di->fw_image_ap;
- priv->fw_alt = di->fw_image_sta;
- } else if (!ap_mode_default && di->fw_image_sta) {
- priv->fw_pref = di->fw_image_sta;
- priv->fw_alt = di->fw_image_ap;
- } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
- printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
- priv->fw_pref = di->fw_image_sta;
- } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
- printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
- priv->fw_pref = di->fw_image_ap;
- }
- rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
- if (rc)
- goto err_stop_firmware;
-
- priv->hw_restart_in_progress = false;
-
- priv->running_bsses = 0;
-
- return rc;
-
-err_stop_firmware:
- mwl8k_hw_reset(priv);
-
-err_iounmap:
- if (priv->regs != NULL)
- pci_iounmap(pdev, priv->regs);
-
- if (priv->sram != NULL)
- pci_iounmap(pdev, priv->sram);
-
- ieee80211_free_hw(hw);
-
-err_free_reg:
- pci_release_regions(pdev);
-
-err_disable_device:
- pci_disable_device(pdev);
-
- return rc;
-}
-
-static void mwl8k_remove(struct pci_dev *pdev)
-{
- struct ieee80211_hw *hw = pci_get_drvdata(pdev);
- struct mwl8k_priv *priv;
- int i;
-
- if (hw == NULL)
- return;
- priv = hw->priv;
-
- wait_for_completion(&priv->firmware_loading_complete);
-
- if (priv->fw_state == FW_STATE_ERROR) {
- mwl8k_hw_reset(priv);
- goto unmap;
- }
-
- ieee80211_stop_queues(hw);
-
- ieee80211_unregister_hw(hw);
-
- /* Remove TX reclaim and RX tasklets. */
- tasklet_kill(&priv->poll_tx_task);
- tasklet_kill(&priv->poll_rx_task);
-
- /* Stop hardware */
- mwl8k_hw_reset(priv);
-
- /* Return all skbs to mac80211 */
- for (i = 0; i < mwl8k_tx_queues(priv); i++)
- mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
-
- for (i = 0; i < mwl8k_tx_queues(priv); i++)
- mwl8k_txq_deinit(hw, i);
-
- mwl8k_rxq_deinit(hw, 0);
-
- pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
-
-unmap:
- pci_iounmap(pdev, priv->regs);
- pci_iounmap(pdev, priv->sram);
- ieee80211_free_hw(hw);
- pci_release_regions(pdev);
- pci_disable_device(pdev);
-}
-
-static struct pci_driver mwl8k_driver = {
- .name = MWL8K_NAME,
- .id_table = mwl8k_pci_id_table,
- .probe = mwl8k_probe,
- .remove = mwl8k_remove,
-};
-
-module_pci_driver(mwl8k_driver);
-
-MODULE_DESCRIPTION(MWL8K_DESC);
-MODULE_VERSION(MWL8K_VERSION);
-MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
-MODULE_LICENSE("GPL");
projects / cascardo / linux.git / commitdiff