1 /* Copyright (c) 2014 Broadcom Corporation
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/firmware.h>
19 #include <linux/pci.h>
20 #include <linux/vmalloc.h>
21 #include <linux/delay.h>
22 #include <linux/interrupt.h>
23 #include <linux/bcma/bcma.h>
24 #include <linux/sched.h>
25 #include <asm/unaligned.h>
28 #include <chipcommon.h>
29 #include <brcmu_utils.h>
30 #include <brcmu_wifi.h>
31 #include <brcm_hw_ids.h>
35 #include "commonring.h"
42 enum brcmf_pcie_state {
43 BRCMFMAC_PCIE_STATE_DOWN,
44 BRCMFMAC_PCIE_STATE_UP
48 #define BRCMF_PCIE_43602_FW_NAME "brcm/brcmfmac43602-pcie.bin"
49 #define BRCMF_PCIE_43602_NVRAM_NAME "brcm/brcmfmac43602-pcie.txt"
50 #define BRCMF_PCIE_4354_FW_NAME "brcm/brcmfmac4354-pcie.bin"
51 #define BRCMF_PCIE_4354_NVRAM_NAME "brcm/brcmfmac4354-pcie.txt"
52 #define BRCMF_PCIE_4356_FW_NAME "brcm/brcmfmac4356-pcie.bin"
53 #define BRCMF_PCIE_4356_NVRAM_NAME "brcm/brcmfmac4356-pcie.txt"
54 #define BRCMF_PCIE_43570_FW_NAME "brcm/brcmfmac43570-pcie.bin"
55 #define BRCMF_PCIE_43570_NVRAM_NAME "brcm/brcmfmac43570-pcie.txt"
57 #define BRCMF_PCIE_FW_UP_TIMEOUT 2000 /* msec */
59 #define BRCMF_PCIE_TCM_MAP_SIZE (4096 * 1024)
60 #define BRCMF_PCIE_REG_MAP_SIZE (32 * 1024)
62 /* backplane addres space accessed by BAR0 */
63 #define BRCMF_PCIE_BAR0_WINDOW 0x80
64 #define BRCMF_PCIE_BAR0_REG_SIZE 0x1000
65 #define BRCMF_PCIE_BAR0_WRAPPERBASE 0x70
67 #define BRCMF_PCIE_BAR0_WRAPBASE_DMP_OFFSET 0x1000
68 #define BRCMF_PCIE_BARO_PCIE_ENUM_OFFSET 0x2000
70 #define BRCMF_PCIE_ARMCR4REG_BANKIDX 0x40
71 #define BRCMF_PCIE_ARMCR4REG_BANKPDA 0x4C
73 #define BRCMF_PCIE_REG_INTSTATUS 0x90
74 #define BRCMF_PCIE_REG_INTMASK 0x94
75 #define BRCMF_PCIE_REG_SBMBX 0x98
77 #define BRCMF_PCIE_PCIE2REG_INTMASK 0x24
78 #define BRCMF_PCIE_PCIE2REG_MAILBOXINT 0x48
79 #define BRCMF_PCIE_PCIE2REG_MAILBOXMASK 0x4C
80 #define BRCMF_PCIE_PCIE2REG_CONFIGADDR 0x120
81 #define BRCMF_PCIE_PCIE2REG_CONFIGDATA 0x124
82 #define BRCMF_PCIE_PCIE2REG_H2D_MAILBOX 0x140
84 #define BRCMF_PCIE_GENREV1 1
85 #define BRCMF_PCIE_GENREV2 2
87 #define BRCMF_PCIE2_INTA 0x01
88 #define BRCMF_PCIE2_INTB 0x02
90 #define BRCMF_PCIE_INT_0 0x01
91 #define BRCMF_PCIE_INT_1 0x02
92 #define BRCMF_PCIE_INT_DEF (BRCMF_PCIE_INT_0 | \
95 #define BRCMF_PCIE_MB_INT_FN0_0 0x0100
96 #define BRCMF_PCIE_MB_INT_FN0_1 0x0200
97 #define BRCMF_PCIE_MB_INT_D2H0_DB0 0x10000
98 #define BRCMF_PCIE_MB_INT_D2H0_DB1 0x20000
99 #define BRCMF_PCIE_MB_INT_D2H1_DB0 0x40000
100 #define BRCMF_PCIE_MB_INT_D2H1_DB1 0x80000
101 #define BRCMF_PCIE_MB_INT_D2H2_DB0 0x100000
102 #define BRCMF_PCIE_MB_INT_D2H2_DB1 0x200000
103 #define BRCMF_PCIE_MB_INT_D2H3_DB0 0x400000
104 #define BRCMF_PCIE_MB_INT_D2H3_DB1 0x800000
106 #define BRCMF_PCIE_MB_INT_D2H_DB (BRCMF_PCIE_MB_INT_D2H0_DB0 | \
107 BRCMF_PCIE_MB_INT_D2H0_DB1 | \
108 BRCMF_PCIE_MB_INT_D2H1_DB0 | \
109 BRCMF_PCIE_MB_INT_D2H1_DB1 | \
110 BRCMF_PCIE_MB_INT_D2H2_DB0 | \
111 BRCMF_PCIE_MB_INT_D2H2_DB1 | \
112 BRCMF_PCIE_MB_INT_D2H3_DB0 | \
113 BRCMF_PCIE_MB_INT_D2H3_DB1)
115 #define BRCMF_PCIE_MIN_SHARED_VERSION 4
116 #define BRCMF_PCIE_MAX_SHARED_VERSION 5
117 #define BRCMF_PCIE_SHARED_VERSION_MASK 0x00FF
118 #define BRCMF_PCIE_SHARED_TXPUSH_SUPPORT 0x4000
120 #define BRCMF_PCIE_FLAGS_HTOD_SPLIT 0x4000
121 #define BRCMF_PCIE_FLAGS_DTOH_SPLIT 0x8000
123 #define BRCMF_SHARED_MAX_RXBUFPOST_OFFSET 34
124 #define BRCMF_SHARED_RING_BASE_OFFSET 52
125 #define BRCMF_SHARED_RX_DATAOFFSET_OFFSET 36
126 #define BRCMF_SHARED_CONSOLE_ADDR_OFFSET 20
127 #define BRCMF_SHARED_HTOD_MB_DATA_ADDR_OFFSET 40
128 #define BRCMF_SHARED_DTOH_MB_DATA_ADDR_OFFSET 44
129 #define BRCMF_SHARED_RING_INFO_ADDR_OFFSET 48
130 #define BRCMF_SHARED_DMA_SCRATCH_LEN_OFFSET 52
131 #define BRCMF_SHARED_DMA_SCRATCH_ADDR_OFFSET 56
132 #define BRCMF_SHARED_DMA_RINGUPD_LEN_OFFSET 64
133 #define BRCMF_SHARED_DMA_RINGUPD_ADDR_OFFSET 68
135 #define BRCMF_RING_H2D_RING_COUNT_OFFSET 0
136 #define BRCMF_RING_D2H_RING_COUNT_OFFSET 1
137 #define BRCMF_RING_H2D_RING_MEM_OFFSET 4
138 #define BRCMF_RING_H2D_RING_STATE_OFFSET 8
140 #define BRCMF_RING_MEM_BASE_ADDR_OFFSET 8
141 #define BRCMF_RING_MAX_ITEM_OFFSET 4
142 #define BRCMF_RING_LEN_ITEMS_OFFSET 6
143 #define BRCMF_RING_MEM_SZ 16
144 #define BRCMF_RING_STATE_SZ 8
146 #define BRCMF_SHARED_RING_H2D_W_IDX_PTR_OFFSET 4
147 #define BRCMF_SHARED_RING_H2D_R_IDX_PTR_OFFSET 8
148 #define BRCMF_SHARED_RING_D2H_W_IDX_PTR_OFFSET 12
149 #define BRCMF_SHARED_RING_D2H_R_IDX_PTR_OFFSET 16
150 #define BRCMF_SHARED_RING_TCM_MEMLOC_OFFSET 0
151 #define BRCMF_SHARED_RING_MAX_SUB_QUEUES 52
153 #define BRCMF_DEF_MAX_RXBUFPOST 255
155 #define BRCMF_CONSOLE_BUFADDR_OFFSET 8
156 #define BRCMF_CONSOLE_BUFSIZE_OFFSET 12
157 #define BRCMF_CONSOLE_WRITEIDX_OFFSET 16
159 #define BRCMF_DMA_D2H_SCRATCH_BUF_LEN 8
160 #define BRCMF_DMA_D2H_RINGUPD_BUF_LEN 1024
162 #define BRCMF_D2H_DEV_D3_ACK 0x00000001
163 #define BRCMF_D2H_DEV_DS_ENTER_REQ 0x00000002
164 #define BRCMF_D2H_DEV_DS_EXIT_NOTE 0x00000004
166 #define BRCMF_H2D_HOST_D3_INFORM 0x00000001
167 #define BRCMF_H2D_HOST_DS_ACK 0x00000002
168 #define BRCMF_H2D_HOST_D0_INFORM_IN_USE 0x00000008
169 #define BRCMF_H2D_HOST_D0_INFORM 0x00000010
171 #define BRCMF_PCIE_MBDATA_TIMEOUT 2000
173 #define BRCMF_PCIE_CFGREG_STATUS_CMD 0x4
174 #define BRCMF_PCIE_CFGREG_PM_CSR 0x4C
175 #define BRCMF_PCIE_CFGREG_MSI_CAP 0x58
176 #define BRCMF_PCIE_CFGREG_MSI_ADDR_L 0x5C
177 #define BRCMF_PCIE_CFGREG_MSI_ADDR_H 0x60
178 #define BRCMF_PCIE_CFGREG_MSI_DATA 0x64
179 #define BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL 0xBC
180 #define BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL2 0xDC
181 #define BRCMF_PCIE_CFGREG_RBAR_CTRL 0x228
182 #define BRCMF_PCIE_CFGREG_PML1_SUB_CTRL1 0x248
183 #define BRCMF_PCIE_CFGREG_REG_BAR2_CONFIG 0x4E0
184 #define BRCMF_PCIE_CFGREG_REG_BAR3_CONFIG 0x4F4
185 #define BRCMF_PCIE_LINK_STATUS_CTRL_ASPM_ENAB 3
188 MODULE_FIRMWARE(BRCMF_PCIE_43602_FW_NAME);
189 MODULE_FIRMWARE(BRCMF_PCIE_43602_NVRAM_NAME);
190 MODULE_FIRMWARE(BRCMF_PCIE_4354_FW_NAME);
191 MODULE_FIRMWARE(BRCMF_PCIE_4354_NVRAM_NAME);
192 MODULE_FIRMWARE(BRCMF_PCIE_43570_FW_NAME);
193 MODULE_FIRMWARE(BRCMF_PCIE_43570_NVRAM_NAME);
196 struct brcmf_pcie_console {
205 struct brcmf_pcie_shared_info {
206 u32 tcm_base_address;
208 struct brcmf_pcie_ringbuf *commonrings[BRCMF_NROF_COMMON_MSGRINGS];
209 struct brcmf_pcie_ringbuf *flowrings;
213 u32 htod_mb_data_addr;
214 u32 dtoh_mb_data_addr;
216 struct brcmf_pcie_console console;
218 dma_addr_t scratch_dmahandle;
220 dma_addr_t ringupd_dmahandle;
223 struct brcmf_pcie_core_info {
228 struct brcmf_pciedev_info {
229 enum brcmf_pcie_state state;
232 struct pci_dev *pdev;
233 char fw_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
234 char nvram_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
240 struct brcmf_chip *ci;
243 struct brcmf_pcie_shared_info shared;
244 void (*ringbell)(struct brcmf_pciedev_info *devinfo);
245 wait_queue_head_t mbdata_resp_wait;
246 bool mbdata_completed;
251 struct brcmf_pcie_ringbuf {
252 struct brcmf_commonring commonring;
253 dma_addr_t dma_handle;
256 struct brcmf_pciedev_info *devinfo;
261 static const u32 brcmf_ring_max_item[BRCMF_NROF_COMMON_MSGRINGS] = {
262 BRCMF_H2D_MSGRING_CONTROL_SUBMIT_MAX_ITEM,
263 BRCMF_H2D_MSGRING_RXPOST_SUBMIT_MAX_ITEM,
264 BRCMF_D2H_MSGRING_CONTROL_COMPLETE_MAX_ITEM,
265 BRCMF_D2H_MSGRING_TX_COMPLETE_MAX_ITEM,
266 BRCMF_D2H_MSGRING_RX_COMPLETE_MAX_ITEM
269 static const u32 brcmf_ring_itemsize[BRCMF_NROF_COMMON_MSGRINGS] = {
270 BRCMF_H2D_MSGRING_CONTROL_SUBMIT_ITEMSIZE,
271 BRCMF_H2D_MSGRING_RXPOST_SUBMIT_ITEMSIZE,
272 BRCMF_D2H_MSGRING_CONTROL_COMPLETE_ITEMSIZE,
273 BRCMF_D2H_MSGRING_TX_COMPLETE_ITEMSIZE,
274 BRCMF_D2H_MSGRING_RX_COMPLETE_ITEMSIZE
278 /* dma flushing needs implementation for mips and arm platforms. Should
279 * be put in util. Note, this is not real flushing. It is virtual non
280 * cached memory. Only write buffers should have to be drained. Though
281 * this may be different depending on platform......
283 #define brcmf_dma_flush(addr, len)
284 #define brcmf_dma_invalidate_cache(addr, len)
288 brcmf_pcie_read_reg32(struct brcmf_pciedev_info *devinfo, u32 reg_offset)
290 void __iomem *address = devinfo->regs + reg_offset;
292 return (ioread32(address));
297 brcmf_pcie_write_reg32(struct brcmf_pciedev_info *devinfo, u32 reg_offset,
300 void __iomem *address = devinfo->regs + reg_offset;
302 iowrite32(value, address);
307 brcmf_pcie_read_tcm8(struct brcmf_pciedev_info *devinfo, u32 mem_offset)
309 void __iomem *address = devinfo->tcm + mem_offset;
311 return (ioread8(address));
316 brcmf_pcie_read_tcm16(struct brcmf_pciedev_info *devinfo, u32 mem_offset)
318 void __iomem *address = devinfo->tcm + mem_offset;
320 return (ioread16(address));
325 brcmf_pcie_write_tcm16(struct brcmf_pciedev_info *devinfo, u32 mem_offset,
328 void __iomem *address = devinfo->tcm + mem_offset;
330 iowrite16(value, address);
335 brcmf_pcie_read_tcm32(struct brcmf_pciedev_info *devinfo, u32 mem_offset)
337 void __iomem *address = devinfo->tcm + mem_offset;
339 return (ioread32(address));
344 brcmf_pcie_write_tcm32(struct brcmf_pciedev_info *devinfo, u32 mem_offset,
347 void __iomem *address = devinfo->tcm + mem_offset;
349 iowrite32(value, address);
354 brcmf_pcie_read_ram32(struct brcmf_pciedev_info *devinfo, u32 mem_offset)
356 void __iomem *addr = devinfo->tcm + devinfo->ci->rambase + mem_offset;
358 return (ioread32(addr));
363 brcmf_pcie_write_ram32(struct brcmf_pciedev_info *devinfo, u32 mem_offset,
366 void __iomem *addr = devinfo->tcm + devinfo->ci->rambase + mem_offset;
368 iowrite32(value, addr);
373 brcmf_pcie_copy_mem_todev(struct brcmf_pciedev_info *devinfo, u32 mem_offset,
374 void *srcaddr, u32 len)
376 void __iomem *address = devinfo->tcm + mem_offset;
381 if (((ulong)address & 4) || ((ulong)srcaddr & 4) || (len & 4)) {
382 if (((ulong)address & 2) || ((ulong)srcaddr & 2) || (len & 2)) {
383 src8 = (u8 *)srcaddr;
385 iowrite8(*src8, address);
392 src16 = (__le16 *)srcaddr;
394 iowrite16(le16_to_cpu(*src16), address);
402 src32 = (__le32 *)srcaddr;
404 iowrite32(le32_to_cpu(*src32), address);
413 #define WRITECC32(devinfo, reg, value) brcmf_pcie_write_reg32(devinfo, \
414 CHIPCREGOFFS(reg), value)
418 brcmf_pcie_select_core(struct brcmf_pciedev_info *devinfo, u16 coreid)
420 const struct pci_dev *pdev = devinfo->pdev;
421 struct brcmf_core *core;
424 core = brcmf_chip_get_core(devinfo->ci, coreid);
426 bar0_win = core->base;
427 pci_write_config_dword(pdev, BRCMF_PCIE_BAR0_WINDOW, bar0_win);
428 if (pci_read_config_dword(pdev, BRCMF_PCIE_BAR0_WINDOW,
430 if (bar0_win != core->base) {
431 bar0_win = core->base;
432 pci_write_config_dword(pdev,
433 BRCMF_PCIE_BAR0_WINDOW,
438 brcmf_err("Unsupported core selected %x\n", coreid);
443 static void brcmf_pcie_reset_device(struct brcmf_pciedev_info *devinfo)
445 u16 cfg_offset[] = { BRCMF_PCIE_CFGREG_STATUS_CMD,
446 BRCMF_PCIE_CFGREG_PM_CSR,
447 BRCMF_PCIE_CFGREG_MSI_CAP,
448 BRCMF_PCIE_CFGREG_MSI_ADDR_L,
449 BRCMF_PCIE_CFGREG_MSI_ADDR_H,
450 BRCMF_PCIE_CFGREG_MSI_DATA,
451 BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL2,
452 BRCMF_PCIE_CFGREG_RBAR_CTRL,
453 BRCMF_PCIE_CFGREG_PML1_SUB_CTRL1,
454 BRCMF_PCIE_CFGREG_REG_BAR2_CONFIG,
455 BRCMF_PCIE_CFGREG_REG_BAR3_CONFIG };
463 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
464 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR,
465 BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL);
466 lsc = brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA);
467 val = lsc & (~BRCMF_PCIE_LINK_STATUS_CTRL_ASPM_ENAB);
468 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA, val);
470 brcmf_pcie_select_core(devinfo, BCMA_CORE_CHIPCOMMON);
471 WRITECC32(devinfo, watchdog, 4);
474 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
475 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR,
476 BRCMF_PCIE_CFGREG_LINK_STATUS_CTRL);
477 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA, lsc);
479 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
480 for (i = 0; i < ARRAY_SIZE(cfg_offset); i++) {
481 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR,
483 val = brcmf_pcie_read_reg32(devinfo,
484 BRCMF_PCIE_PCIE2REG_CONFIGDATA);
485 brcmf_dbg(PCIE, "config offset 0x%04x, value 0x%04x\n",
487 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA,
493 static void brcmf_pcie_attach(struct brcmf_pciedev_info *devinfo)
497 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
498 if (brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_INTMASK) != 0)
499 brcmf_pcie_reset_device(devinfo);
500 /* BAR1 window may not be sized properly */
501 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
502 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGADDR, 0x4e0);
503 config = brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA);
504 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_CONFIGDATA, config);
506 device_wakeup_enable(&devinfo->pdev->dev);
510 static int brcmf_pcie_enter_download_state(struct brcmf_pciedev_info *devinfo)
512 brcmf_chip_enter_download(devinfo->ci);
514 if (devinfo->ci->chip == BRCM_CC_43602_CHIP_ID) {
515 brcmf_pcie_select_core(devinfo, BCMA_CORE_ARM_CR4);
516 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_ARMCR4REG_BANKIDX,
518 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_ARMCR4REG_BANKPDA,
520 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_ARMCR4REG_BANKIDX,
522 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_ARMCR4REG_BANKPDA,
529 static int brcmf_pcie_exit_download_state(struct brcmf_pciedev_info *devinfo,
532 struct brcmf_core *core;
534 if (devinfo->ci->chip == BRCM_CC_43602_CHIP_ID) {
535 core = brcmf_chip_get_core(devinfo->ci, BCMA_CORE_INTERNAL_MEM);
536 brcmf_chip_resetcore(core, 0, 0, 0);
539 return !brcmf_chip_exit_download(devinfo->ci, resetintr);
544 brcmf_pcie_send_mb_data(struct brcmf_pciedev_info *devinfo, u32 htod_mb_data)
546 struct brcmf_pcie_shared_info *shared;
548 u32 cur_htod_mb_data;
551 shared = &devinfo->shared;
552 addr = shared->htod_mb_data_addr;
553 cur_htod_mb_data = brcmf_pcie_read_tcm32(devinfo, addr);
555 if (cur_htod_mb_data != 0)
556 brcmf_dbg(PCIE, "MB transaction is already pending 0x%04x\n",
560 while (cur_htod_mb_data != 0) {
565 cur_htod_mb_data = brcmf_pcie_read_tcm32(devinfo, addr);
568 brcmf_pcie_write_tcm32(devinfo, addr, htod_mb_data);
569 pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
570 pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
576 static void brcmf_pcie_handle_mb_data(struct brcmf_pciedev_info *devinfo)
578 struct brcmf_pcie_shared_info *shared;
582 shared = &devinfo->shared;
583 addr = shared->dtoh_mb_data_addr;
584 dtoh_mb_data = brcmf_pcie_read_tcm32(devinfo, addr);
589 brcmf_pcie_write_tcm32(devinfo, addr, 0);
591 brcmf_dbg(PCIE, "D2H_MB_DATA: 0x%04x\n", dtoh_mb_data);
592 if (dtoh_mb_data & BRCMF_D2H_DEV_DS_ENTER_REQ) {
593 brcmf_dbg(PCIE, "D2H_MB_DATA: DEEP SLEEP REQ\n");
594 brcmf_pcie_send_mb_data(devinfo, BRCMF_H2D_HOST_DS_ACK);
595 brcmf_dbg(PCIE, "D2H_MB_DATA: sent DEEP SLEEP ACK\n");
597 if (dtoh_mb_data & BRCMF_D2H_DEV_DS_EXIT_NOTE)
598 brcmf_dbg(PCIE, "D2H_MB_DATA: DEEP SLEEP EXIT\n");
599 if (dtoh_mb_data & BRCMF_D2H_DEV_D3_ACK) {
600 brcmf_dbg(PCIE, "D2H_MB_DATA: D3 ACK\n");
601 if (waitqueue_active(&devinfo->mbdata_resp_wait)) {
602 devinfo->mbdata_completed = true;
603 wake_up(&devinfo->mbdata_resp_wait);
609 static void brcmf_pcie_bus_console_init(struct brcmf_pciedev_info *devinfo)
611 struct brcmf_pcie_shared_info *shared;
612 struct brcmf_pcie_console *console;
615 shared = &devinfo->shared;
616 console = &shared->console;
617 addr = shared->tcm_base_address + BRCMF_SHARED_CONSOLE_ADDR_OFFSET;
618 console->base_addr = brcmf_pcie_read_tcm32(devinfo, addr);
620 addr = console->base_addr + BRCMF_CONSOLE_BUFADDR_OFFSET;
621 console->buf_addr = brcmf_pcie_read_tcm32(devinfo, addr);
622 addr = console->base_addr + BRCMF_CONSOLE_BUFSIZE_OFFSET;
623 console->bufsize = brcmf_pcie_read_tcm32(devinfo, addr);
625 brcmf_dbg(PCIE, "Console: base %x, buf %x, size %d\n",
626 console->base_addr, console->buf_addr, console->bufsize);
630 static void brcmf_pcie_bus_console_read(struct brcmf_pciedev_info *devinfo)
632 struct brcmf_pcie_console *console;
637 console = &devinfo->shared.console;
638 addr = console->base_addr + BRCMF_CONSOLE_WRITEIDX_OFFSET;
639 newidx = brcmf_pcie_read_tcm32(devinfo, addr);
640 while (newidx != console->read_idx) {
641 addr = console->buf_addr + console->read_idx;
642 ch = brcmf_pcie_read_tcm8(devinfo, addr);
644 if (console->read_idx == console->bufsize)
645 console->read_idx = 0;
648 console->log_str[console->log_idx] = ch;
651 (console->log_idx == (sizeof(console->log_str) - 2))) {
653 console->log_str[console->log_idx] = ch;
658 console->log_str[console->log_idx] = 0;
659 brcmf_dbg(PCIE, "CONSOLE: %s\n", console->log_str);
660 console->log_idx = 0;
666 static __used void brcmf_pcie_ringbell_v1(struct brcmf_pciedev_info *devinfo)
670 brcmf_dbg(PCIE, "RING !\n");
671 reg_value = brcmf_pcie_read_reg32(devinfo,
672 BRCMF_PCIE_PCIE2REG_MAILBOXINT);
673 reg_value |= BRCMF_PCIE2_INTB;
674 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT,
679 static void brcmf_pcie_ringbell_v2(struct brcmf_pciedev_info *devinfo)
681 brcmf_dbg(PCIE, "RING !\n");
682 /* Any arbitrary value will do, lets use 1 */
683 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_H2D_MAILBOX, 1);
687 static void brcmf_pcie_intr_disable(struct brcmf_pciedev_info *devinfo)
689 if (devinfo->generic_corerev == BRCMF_PCIE_GENREV1)
690 pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_INTMASK,
693 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXMASK,
698 static void brcmf_pcie_intr_enable(struct brcmf_pciedev_info *devinfo)
700 if (devinfo->generic_corerev == BRCMF_PCIE_GENREV1)
701 pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_INTMASK,
704 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXMASK,
705 BRCMF_PCIE_MB_INT_D2H_DB |
706 BRCMF_PCIE_MB_INT_FN0_0 |
707 BRCMF_PCIE_MB_INT_FN0_1);
711 static irqreturn_t brcmf_pcie_quick_check_isr_v1(int irq, void *arg)
713 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)arg;
717 pci_read_config_dword(devinfo->pdev, BRCMF_PCIE_REG_INTSTATUS, &status);
719 brcmf_pcie_intr_disable(devinfo);
720 brcmf_dbg(PCIE, "Enter\n");
721 return IRQ_WAKE_THREAD;
727 static irqreturn_t brcmf_pcie_quick_check_isr_v2(int irq, void *arg)
729 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)arg;
731 if (brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT)) {
732 brcmf_pcie_intr_disable(devinfo);
733 brcmf_dbg(PCIE, "Enter\n");
734 return IRQ_WAKE_THREAD;
740 static irqreturn_t brcmf_pcie_isr_thread_v1(int irq, void *arg)
742 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)arg;
743 const struct pci_dev *pdev = devinfo->pdev;
746 devinfo->in_irq = true;
748 pci_read_config_dword(pdev, BRCMF_PCIE_REG_INTSTATUS, &status);
749 brcmf_dbg(PCIE, "Enter %x\n", status);
751 pci_write_config_dword(pdev, BRCMF_PCIE_REG_INTSTATUS, status);
752 if (devinfo->state == BRCMFMAC_PCIE_STATE_UP)
753 brcmf_proto_msgbuf_rx_trigger(&devinfo->pdev->dev);
755 if (devinfo->state == BRCMFMAC_PCIE_STATE_UP)
756 brcmf_pcie_intr_enable(devinfo);
757 devinfo->in_irq = false;
762 static irqreturn_t brcmf_pcie_isr_thread_v2(int irq, void *arg)
764 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)arg;
767 devinfo->in_irq = true;
768 status = brcmf_pcie_read_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT);
769 brcmf_dbg(PCIE, "Enter %x\n", status);
771 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT,
773 if (status & (BRCMF_PCIE_MB_INT_FN0_0 |
774 BRCMF_PCIE_MB_INT_FN0_1))
775 brcmf_pcie_handle_mb_data(devinfo);
776 if (status & BRCMF_PCIE_MB_INT_D2H_DB) {
777 if (devinfo->state == BRCMFMAC_PCIE_STATE_UP)
778 brcmf_proto_msgbuf_rx_trigger(
779 &devinfo->pdev->dev);
782 brcmf_pcie_bus_console_read(devinfo);
783 if (devinfo->state == BRCMFMAC_PCIE_STATE_UP)
784 brcmf_pcie_intr_enable(devinfo);
785 devinfo->in_irq = false;
790 static int brcmf_pcie_request_irq(struct brcmf_pciedev_info *devinfo)
792 struct pci_dev *pdev;
794 pdev = devinfo->pdev;
796 brcmf_pcie_intr_disable(devinfo);
798 brcmf_dbg(PCIE, "Enter\n");
799 /* is it a v1 or v2 implementation */
800 devinfo->irq_requested = false;
801 pci_enable_msi(pdev);
802 if (devinfo->generic_corerev == BRCMF_PCIE_GENREV1) {
803 if (request_threaded_irq(pdev->irq,
804 brcmf_pcie_quick_check_isr_v1,
805 brcmf_pcie_isr_thread_v1,
806 IRQF_SHARED, "brcmf_pcie_intr",
808 pci_disable_msi(pdev);
809 brcmf_err("Failed to request IRQ %d\n", pdev->irq);
813 if (request_threaded_irq(pdev->irq,
814 brcmf_pcie_quick_check_isr_v2,
815 brcmf_pcie_isr_thread_v2,
816 IRQF_SHARED, "brcmf_pcie_intr",
818 pci_disable_msi(pdev);
819 brcmf_err("Failed to request IRQ %d\n", pdev->irq);
823 devinfo->irq_requested = true;
824 devinfo->irq_allocated = true;
829 static void brcmf_pcie_release_irq(struct brcmf_pciedev_info *devinfo)
831 struct pci_dev *pdev;
835 if (!devinfo->irq_allocated)
838 pdev = devinfo->pdev;
840 brcmf_pcie_intr_disable(devinfo);
841 if (!devinfo->irq_requested)
843 devinfo->irq_requested = false;
844 free_irq(pdev->irq, devinfo);
845 pci_disable_msi(pdev);
849 while ((devinfo->in_irq) && (count < 20)) {
854 brcmf_err("Still in IRQ (processing) !!!\n");
856 if (devinfo->generic_corerev == BRCMF_PCIE_GENREV1) {
858 pci_read_config_dword(pdev, BRCMF_PCIE_REG_INTSTATUS, &status);
859 pci_write_config_dword(pdev, BRCMF_PCIE_REG_INTSTATUS, status);
861 status = brcmf_pcie_read_reg32(devinfo,
862 BRCMF_PCIE_PCIE2REG_MAILBOXINT);
863 brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_MAILBOXINT,
866 devinfo->irq_allocated = false;
870 static int brcmf_pcie_ring_mb_write_rptr(void *ctx)
872 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
873 struct brcmf_pciedev_info *devinfo = ring->devinfo;
874 struct brcmf_commonring *commonring = &ring->commonring;
876 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
879 brcmf_dbg(PCIE, "W r_ptr %d (%d), ring %d\n", commonring->r_ptr,
880 commonring->w_ptr, ring->id);
882 brcmf_pcie_write_tcm16(devinfo, ring->r_idx_addr, commonring->r_ptr);
888 static int brcmf_pcie_ring_mb_write_wptr(void *ctx)
890 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
891 struct brcmf_pciedev_info *devinfo = ring->devinfo;
892 struct brcmf_commonring *commonring = &ring->commonring;
894 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
897 brcmf_dbg(PCIE, "W w_ptr %d (%d), ring %d\n", commonring->w_ptr,
898 commonring->r_ptr, ring->id);
900 brcmf_pcie_write_tcm16(devinfo, ring->w_idx_addr, commonring->w_ptr);
906 static int brcmf_pcie_ring_mb_ring_bell(void *ctx)
908 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
909 struct brcmf_pciedev_info *devinfo = ring->devinfo;
911 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
914 devinfo->ringbell(devinfo);
920 static int brcmf_pcie_ring_mb_update_rptr(void *ctx)
922 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
923 struct brcmf_pciedev_info *devinfo = ring->devinfo;
924 struct brcmf_commonring *commonring = &ring->commonring;
926 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
929 commonring->r_ptr = brcmf_pcie_read_tcm16(devinfo, ring->r_idx_addr);
931 brcmf_dbg(PCIE, "R r_ptr %d (%d), ring %d\n", commonring->r_ptr,
932 commonring->w_ptr, ring->id);
938 static int brcmf_pcie_ring_mb_update_wptr(void *ctx)
940 struct brcmf_pcie_ringbuf *ring = (struct brcmf_pcie_ringbuf *)ctx;
941 struct brcmf_pciedev_info *devinfo = ring->devinfo;
942 struct brcmf_commonring *commonring = &ring->commonring;
944 if (devinfo->state != BRCMFMAC_PCIE_STATE_UP)
947 commonring->w_ptr = brcmf_pcie_read_tcm16(devinfo, ring->w_idx_addr);
949 brcmf_dbg(PCIE, "R w_ptr %d (%d), ring %d\n", commonring->w_ptr,
950 commonring->r_ptr, ring->id);
957 brcmf_pcie_init_dmabuffer_for_device(struct brcmf_pciedev_info *devinfo,
958 u32 size, u32 tcm_dma_phys_addr,
959 dma_addr_t *dma_handle)
964 ring = dma_alloc_coherent(&devinfo->pdev->dev, size, dma_handle,
969 address = (long long)(long)*dma_handle;
970 brcmf_pcie_write_tcm32(devinfo, tcm_dma_phys_addr,
971 address & 0xffffffff);
972 brcmf_pcie_write_tcm32(devinfo, tcm_dma_phys_addr + 4, address >> 32);
974 memset(ring, 0, size);
980 static struct brcmf_pcie_ringbuf *
981 brcmf_pcie_alloc_dma_and_ring(struct brcmf_pciedev_info *devinfo, u32 ring_id,
982 u32 tcm_ring_phys_addr)
985 dma_addr_t dma_handle;
986 struct brcmf_pcie_ringbuf *ring;
990 size = brcmf_ring_max_item[ring_id] * brcmf_ring_itemsize[ring_id];
991 dma_buf = brcmf_pcie_init_dmabuffer_for_device(devinfo, size,
992 tcm_ring_phys_addr + BRCMF_RING_MEM_BASE_ADDR_OFFSET,
997 addr = tcm_ring_phys_addr + BRCMF_RING_MAX_ITEM_OFFSET;
998 brcmf_pcie_write_tcm16(devinfo, addr, brcmf_ring_max_item[ring_id]);
999 addr = tcm_ring_phys_addr + BRCMF_RING_LEN_ITEMS_OFFSET;
1000 brcmf_pcie_write_tcm16(devinfo, addr, brcmf_ring_itemsize[ring_id]);
1002 ring = kzalloc(sizeof(*ring), GFP_KERNEL);
1004 dma_free_coherent(&devinfo->pdev->dev, size, dma_buf,
1008 brcmf_commonring_config(&ring->commonring, brcmf_ring_max_item[ring_id],
1009 brcmf_ring_itemsize[ring_id], dma_buf);
1010 ring->dma_handle = dma_handle;
1011 ring->devinfo = devinfo;
1012 brcmf_commonring_register_cb(&ring->commonring,
1013 brcmf_pcie_ring_mb_ring_bell,
1014 brcmf_pcie_ring_mb_update_rptr,
1015 brcmf_pcie_ring_mb_update_wptr,
1016 brcmf_pcie_ring_mb_write_rptr,
1017 brcmf_pcie_ring_mb_write_wptr, ring);
1023 static void brcmf_pcie_release_ringbuffer(struct device *dev,
1024 struct brcmf_pcie_ringbuf *ring)
1032 dma_buf = ring->commonring.buf_addr;
1034 size = ring->commonring.depth * ring->commonring.item_len;
1035 dma_free_coherent(dev, size, dma_buf, ring->dma_handle);
1041 static void brcmf_pcie_release_ringbuffers(struct brcmf_pciedev_info *devinfo)
1045 for (i = 0; i < BRCMF_NROF_COMMON_MSGRINGS; i++) {
1046 brcmf_pcie_release_ringbuffer(&devinfo->pdev->dev,
1047 devinfo->shared.commonrings[i]);
1048 devinfo->shared.commonrings[i] = NULL;
1050 kfree(devinfo->shared.flowrings);
1051 devinfo->shared.flowrings = NULL;
1055 static int brcmf_pcie_init_ringbuffers(struct brcmf_pciedev_info *devinfo)
1057 struct brcmf_pcie_ringbuf *ring;
1058 struct brcmf_pcie_ringbuf *rings;
1069 ring_addr = devinfo->shared.ring_info_addr;
1070 brcmf_dbg(PCIE, "Base ring addr = 0x%08x\n", ring_addr);
1072 addr = ring_addr + BRCMF_SHARED_RING_D2H_W_IDX_PTR_OFFSET;
1073 d2h_w_idx_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1074 addr = ring_addr + BRCMF_SHARED_RING_D2H_R_IDX_PTR_OFFSET;
1075 d2h_r_idx_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1076 addr = ring_addr + BRCMF_SHARED_RING_H2D_W_IDX_PTR_OFFSET;
1077 h2d_w_idx_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1078 addr = ring_addr + BRCMF_SHARED_RING_H2D_R_IDX_PTR_OFFSET;
1079 h2d_r_idx_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1081 addr = ring_addr + BRCMF_SHARED_RING_TCM_MEMLOC_OFFSET;
1082 ring_mem_ptr = brcmf_pcie_read_tcm32(devinfo, addr);
1084 for (i = 0; i < BRCMF_NROF_H2D_COMMON_MSGRINGS; i++) {
1085 ring = brcmf_pcie_alloc_dma_and_ring(devinfo, i, ring_mem_ptr);
1088 ring->w_idx_addr = h2d_w_idx_ptr;
1089 ring->r_idx_addr = h2d_r_idx_ptr;
1091 devinfo->shared.commonrings[i] = ring;
1093 h2d_w_idx_ptr += sizeof(u32);
1094 h2d_r_idx_ptr += sizeof(u32);
1095 ring_mem_ptr += BRCMF_RING_MEM_SZ;
1098 for (i = BRCMF_NROF_H2D_COMMON_MSGRINGS;
1099 i < BRCMF_NROF_COMMON_MSGRINGS; i++) {
1100 ring = brcmf_pcie_alloc_dma_and_ring(devinfo, i, ring_mem_ptr);
1103 ring->w_idx_addr = d2h_w_idx_ptr;
1104 ring->r_idx_addr = d2h_r_idx_ptr;
1106 devinfo->shared.commonrings[i] = ring;
1108 d2h_w_idx_ptr += sizeof(u32);
1109 d2h_r_idx_ptr += sizeof(u32);
1110 ring_mem_ptr += BRCMF_RING_MEM_SZ;
1113 addr = ring_addr + BRCMF_SHARED_RING_MAX_SUB_QUEUES;
1114 max_sub_queues = brcmf_pcie_read_tcm16(devinfo, addr);
1115 devinfo->shared.nrof_flowrings =
1116 max_sub_queues - BRCMF_NROF_H2D_COMMON_MSGRINGS;
1117 rings = kcalloc(devinfo->shared.nrof_flowrings, sizeof(*ring),
1122 brcmf_dbg(PCIE, "Nr of flowrings is %d\n",
1123 devinfo->shared.nrof_flowrings);
1125 for (i = 0; i < devinfo->shared.nrof_flowrings; i++) {
1127 ring->devinfo = devinfo;
1128 ring->id = i + BRCMF_NROF_COMMON_MSGRINGS;
1129 brcmf_commonring_register_cb(&ring->commonring,
1130 brcmf_pcie_ring_mb_ring_bell,
1131 brcmf_pcie_ring_mb_update_rptr,
1132 brcmf_pcie_ring_mb_update_wptr,
1133 brcmf_pcie_ring_mb_write_rptr,
1134 brcmf_pcie_ring_mb_write_wptr,
1136 ring->w_idx_addr = h2d_w_idx_ptr;
1137 ring->r_idx_addr = h2d_r_idx_ptr;
1138 h2d_w_idx_ptr += sizeof(u32);
1139 h2d_r_idx_ptr += sizeof(u32);
1141 devinfo->shared.flowrings = rings;
1146 brcmf_err("Allocating commonring buffers failed\n");
1147 brcmf_pcie_release_ringbuffers(devinfo);
1153 brcmf_pcie_release_scratchbuffers(struct brcmf_pciedev_info *devinfo)
1155 if (devinfo->shared.scratch)
1156 dma_free_coherent(&devinfo->pdev->dev,
1157 BRCMF_DMA_D2H_SCRATCH_BUF_LEN,
1158 devinfo->shared.scratch,
1159 devinfo->shared.scratch_dmahandle);
1160 if (devinfo->shared.ringupd)
1161 dma_free_coherent(&devinfo->pdev->dev,
1162 BRCMF_DMA_D2H_RINGUPD_BUF_LEN,
1163 devinfo->shared.ringupd,
1164 devinfo->shared.ringupd_dmahandle);
1167 static int brcmf_pcie_init_scratchbuffers(struct brcmf_pciedev_info *devinfo)
1172 devinfo->shared.scratch = dma_alloc_coherent(&devinfo->pdev->dev,
1173 BRCMF_DMA_D2H_SCRATCH_BUF_LEN,
1174 &devinfo->shared.scratch_dmahandle, GFP_KERNEL);
1175 if (!devinfo->shared.scratch)
1178 memset(devinfo->shared.scratch, 0, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
1179 brcmf_dma_flush(devinfo->shared.scratch, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
1181 addr = devinfo->shared.tcm_base_address +
1182 BRCMF_SHARED_DMA_SCRATCH_ADDR_OFFSET;
1183 address = (long long)(long)devinfo->shared.scratch_dmahandle;
1184 brcmf_pcie_write_tcm32(devinfo, addr, address & 0xffffffff);
1185 brcmf_pcie_write_tcm32(devinfo, addr + 4, address >> 32);
1186 addr = devinfo->shared.tcm_base_address +
1187 BRCMF_SHARED_DMA_SCRATCH_LEN_OFFSET;
1188 brcmf_pcie_write_tcm32(devinfo, addr, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
1190 devinfo->shared.ringupd = dma_alloc_coherent(&devinfo->pdev->dev,
1191 BRCMF_DMA_D2H_RINGUPD_BUF_LEN,
1192 &devinfo->shared.ringupd_dmahandle, GFP_KERNEL);
1193 if (!devinfo->shared.ringupd)
1196 memset(devinfo->shared.ringupd, 0, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
1197 brcmf_dma_flush(devinfo->shared.ringupd, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
1199 addr = devinfo->shared.tcm_base_address +
1200 BRCMF_SHARED_DMA_RINGUPD_ADDR_OFFSET;
1201 address = (long long)(long)devinfo->shared.ringupd_dmahandle;
1202 brcmf_pcie_write_tcm32(devinfo, addr, address & 0xffffffff);
1203 brcmf_pcie_write_tcm32(devinfo, addr + 4, address >> 32);
1204 addr = devinfo->shared.tcm_base_address +
1205 BRCMF_SHARED_DMA_RINGUPD_LEN_OFFSET;
1206 brcmf_pcie_write_tcm32(devinfo, addr, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
1210 brcmf_err("Allocating scratch buffers failed\n");
1211 brcmf_pcie_release_scratchbuffers(devinfo);
1216 static void brcmf_pcie_down(struct device *dev)
1221 static int brcmf_pcie_tx(struct device *dev, struct sk_buff *skb)
1227 static int brcmf_pcie_tx_ctlpkt(struct device *dev, unsigned char *msg,
1234 static int brcmf_pcie_rx_ctlpkt(struct device *dev, unsigned char *msg,
1241 static void brcmf_pcie_wowl_config(struct device *dev, bool enabled)
1243 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1244 struct brcmf_pciedev *buspub = bus_if->bus_priv.pcie;
1245 struct brcmf_pciedev_info *devinfo = buspub->devinfo;
1247 brcmf_dbg(PCIE, "Configuring WOWL, enabled=%d\n", enabled);
1248 devinfo->wowl_enabled = enabled;
1250 device_set_wakeup_enable(&devinfo->pdev->dev, true);
1252 device_set_wakeup_enable(&devinfo->pdev->dev, false);
1256 static struct brcmf_bus_ops brcmf_pcie_bus_ops = {
1257 .txdata = brcmf_pcie_tx,
1258 .stop = brcmf_pcie_down,
1259 .txctl = brcmf_pcie_tx_ctlpkt,
1260 .rxctl = brcmf_pcie_rx_ctlpkt,
1261 .wowl_config = brcmf_pcie_wowl_config,
1266 brcmf_pcie_init_share_ram_info(struct brcmf_pciedev_info *devinfo,
1269 struct brcmf_pcie_shared_info *shared;
1273 shared = &devinfo->shared;
1274 shared->tcm_base_address = sharedram_addr;
1276 shared->flags = brcmf_pcie_read_tcm32(devinfo, sharedram_addr);
1277 version = shared->flags & BRCMF_PCIE_SHARED_VERSION_MASK;
1278 brcmf_dbg(PCIE, "PCIe protocol version %d\n", version);
1279 if ((version > BRCMF_PCIE_MAX_SHARED_VERSION) ||
1280 (version < BRCMF_PCIE_MIN_SHARED_VERSION)) {
1281 brcmf_err("Unsupported PCIE version %d\n", version);
1284 if (shared->flags & BRCMF_PCIE_SHARED_TXPUSH_SUPPORT) {
1285 brcmf_err("Unsupported legacy TX mode 0x%x\n",
1286 shared->flags & BRCMF_PCIE_SHARED_TXPUSH_SUPPORT);
1290 addr = sharedram_addr + BRCMF_SHARED_MAX_RXBUFPOST_OFFSET;
1291 shared->max_rxbufpost = brcmf_pcie_read_tcm16(devinfo, addr);
1292 if (shared->max_rxbufpost == 0)
1293 shared->max_rxbufpost = BRCMF_DEF_MAX_RXBUFPOST;
1295 addr = sharedram_addr + BRCMF_SHARED_RX_DATAOFFSET_OFFSET;
1296 shared->rx_dataoffset = brcmf_pcie_read_tcm32(devinfo, addr);
1298 addr = sharedram_addr + BRCMF_SHARED_HTOD_MB_DATA_ADDR_OFFSET;
1299 shared->htod_mb_data_addr = brcmf_pcie_read_tcm32(devinfo, addr);
1301 addr = sharedram_addr + BRCMF_SHARED_DTOH_MB_DATA_ADDR_OFFSET;
1302 shared->dtoh_mb_data_addr = brcmf_pcie_read_tcm32(devinfo, addr);
1304 addr = sharedram_addr + BRCMF_SHARED_RING_INFO_ADDR_OFFSET;
1305 shared->ring_info_addr = brcmf_pcie_read_tcm32(devinfo, addr);
1307 brcmf_dbg(PCIE, "max rx buf post %d, rx dataoffset %d\n",
1308 shared->max_rxbufpost, shared->rx_dataoffset);
1310 brcmf_pcie_bus_console_init(devinfo);
1316 static int brcmf_pcie_get_fwnames(struct brcmf_pciedev_info *devinfo)
1320 uint fw_len, nv_len;
1323 brcmf_dbg(PCIE, "Enter, chip 0x%04x chiprev %d\n", devinfo->ci->chip,
1324 devinfo->ci->chiprev);
1326 switch (devinfo->ci->chip) {
1327 case BRCM_CC_43602_CHIP_ID:
1328 fw_name = BRCMF_PCIE_43602_FW_NAME;
1329 nvram_name = BRCMF_PCIE_43602_NVRAM_NAME;
1331 case BRCM_CC_4354_CHIP_ID:
1332 fw_name = BRCMF_PCIE_4354_FW_NAME;
1333 nvram_name = BRCMF_PCIE_4354_NVRAM_NAME;
1335 case BRCM_CC_4356_CHIP_ID:
1336 fw_name = BRCMF_PCIE_4356_FW_NAME;
1337 nvram_name = BRCMF_PCIE_4356_NVRAM_NAME;
1339 case BRCM_CC_43567_CHIP_ID:
1340 case BRCM_CC_43569_CHIP_ID:
1341 case BRCM_CC_43570_CHIP_ID:
1342 fw_name = BRCMF_PCIE_43570_FW_NAME;
1343 nvram_name = BRCMF_PCIE_43570_NVRAM_NAME;
1346 brcmf_err("Unsupported chip 0x%04x\n", devinfo->ci->chip);
1350 fw_len = sizeof(devinfo->fw_name) - 1;
1351 nv_len = sizeof(devinfo->nvram_name) - 1;
1352 /* check if firmware path is provided by module parameter */
1353 if (brcmf_firmware_path[0] != '\0') {
1354 strncpy(devinfo->fw_name, brcmf_firmware_path, fw_len);
1355 strncpy(devinfo->nvram_name, brcmf_firmware_path, nv_len);
1356 fw_len -= strlen(devinfo->fw_name);
1357 nv_len -= strlen(devinfo->nvram_name);
1359 end = brcmf_firmware_path[strlen(brcmf_firmware_path) - 1];
1361 strncat(devinfo->fw_name, "/", fw_len);
1362 strncat(devinfo->nvram_name, "/", nv_len);
1367 strncat(devinfo->fw_name, fw_name, fw_len);
1368 strncat(devinfo->nvram_name, nvram_name, nv_len);
1374 static int brcmf_pcie_download_fw_nvram(struct brcmf_pciedev_info *devinfo,
1375 const struct firmware *fw, void *nvram,
1379 u32 sharedram_addr_written;
1385 devinfo->ringbell = brcmf_pcie_ringbell_v2;
1386 devinfo->generic_corerev = BRCMF_PCIE_GENREV2;
1388 brcmf_dbg(PCIE, "Halt ARM.\n");
1389 err = brcmf_pcie_enter_download_state(devinfo);
1393 brcmf_dbg(PCIE, "Download FW %s\n", devinfo->fw_name);
1394 brcmf_pcie_copy_mem_todev(devinfo, devinfo->ci->rambase,
1395 (void *)fw->data, fw->size);
1397 resetintr = get_unaligned_le32(fw->data);
1398 release_firmware(fw);
1400 /* reset last 4 bytes of RAM address. to be used for shared
1401 * area. This identifies when FW is running
1403 brcmf_pcie_write_ram32(devinfo, devinfo->ci->ramsize - 4, 0);
1406 brcmf_dbg(PCIE, "Download NVRAM %s\n", devinfo->nvram_name);
1407 address = devinfo->ci->rambase + devinfo->ci->ramsize -
1409 brcmf_pcie_copy_mem_todev(devinfo, address, nvram, nvram_len);
1410 brcmf_fw_nvram_free(nvram);
1412 brcmf_dbg(PCIE, "No matching NVRAM file found %s\n",
1413 devinfo->nvram_name);
1416 sharedram_addr_written = brcmf_pcie_read_ram32(devinfo,
1417 devinfo->ci->ramsize -
1419 brcmf_dbg(PCIE, "Bring ARM in running state\n");
1420 err = brcmf_pcie_exit_download_state(devinfo, resetintr);
1424 brcmf_dbg(PCIE, "Wait for FW init\n");
1425 sharedram_addr = sharedram_addr_written;
1426 loop_counter = BRCMF_PCIE_FW_UP_TIMEOUT / 50;
1427 while ((sharedram_addr == sharedram_addr_written) && (loop_counter)) {
1429 sharedram_addr = brcmf_pcie_read_ram32(devinfo,
1430 devinfo->ci->ramsize -
1434 if (sharedram_addr == sharedram_addr_written) {
1435 brcmf_err("FW failed to initialize\n");
1438 brcmf_dbg(PCIE, "Shared RAM addr: 0x%08x\n", sharedram_addr);
1440 return (brcmf_pcie_init_share_ram_info(devinfo, sharedram_addr));
1444 static int brcmf_pcie_get_resource(struct brcmf_pciedev_info *devinfo)
1446 struct pci_dev *pdev;
1448 phys_addr_t bar0_addr, bar1_addr;
1451 pdev = devinfo->pdev;
1453 err = pci_enable_device(pdev);
1455 brcmf_err("pci_enable_device failed err=%d\n", err);
1459 pci_set_master(pdev);
1461 /* Bar-0 mapped address */
1462 bar0_addr = pci_resource_start(pdev, 0);
1463 /* Bar-1 mapped address */
1464 bar1_addr = pci_resource_start(pdev, 2);
1465 /* read Bar-1 mapped memory range */
1466 bar1_size = pci_resource_len(pdev, 2);
1467 if ((bar1_size == 0) || (bar1_addr == 0)) {
1468 brcmf_err("BAR1 Not enabled, device size=%ld, addr=%#016llx\n",
1469 bar1_size, (unsigned long long)bar1_addr);
1473 devinfo->regs = ioremap_nocache(bar0_addr, BRCMF_PCIE_REG_MAP_SIZE);
1474 devinfo->tcm = ioremap_nocache(bar1_addr, BRCMF_PCIE_TCM_MAP_SIZE);
1475 devinfo->tcm_size = BRCMF_PCIE_TCM_MAP_SIZE;
1477 if (!devinfo->regs || !devinfo->tcm) {
1478 brcmf_err("ioremap() failed (%p,%p)\n", devinfo->regs,
1482 brcmf_dbg(PCIE, "Phys addr : reg space = %p base addr %#016llx\n",
1483 devinfo->regs, (unsigned long long)bar0_addr);
1484 brcmf_dbg(PCIE, "Phys addr : mem space = %p base addr %#016llx\n",
1485 devinfo->tcm, (unsigned long long)bar1_addr);
1491 static void brcmf_pcie_release_resource(struct brcmf_pciedev_info *devinfo)
1494 iounmap(devinfo->tcm);
1496 iounmap(devinfo->regs);
1498 pci_disable_device(devinfo->pdev);
1502 static int brcmf_pcie_attach_bus(struct device *dev)
1506 /* Attach to the common driver interface */
1507 ret = brcmf_attach(dev);
1509 brcmf_err("brcmf_attach failed\n");
1511 ret = brcmf_bus_start(dev);
1513 brcmf_err("dongle is not responding\n");
1520 static u32 brcmf_pcie_buscore_prep_addr(const struct pci_dev *pdev, u32 addr)
1524 ret_addr = addr & (BRCMF_PCIE_BAR0_REG_SIZE - 1);
1525 addr &= ~(BRCMF_PCIE_BAR0_REG_SIZE - 1);
1526 pci_write_config_dword(pdev, BRCMF_PCIE_BAR0_WINDOW, addr);
1532 static u32 brcmf_pcie_buscore_read32(void *ctx, u32 addr)
1534 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)ctx;
1536 addr = brcmf_pcie_buscore_prep_addr(devinfo->pdev, addr);
1537 return brcmf_pcie_read_reg32(devinfo, addr);
1541 static void brcmf_pcie_buscore_write32(void *ctx, u32 addr, u32 value)
1543 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)ctx;
1545 addr = brcmf_pcie_buscore_prep_addr(devinfo->pdev, addr);
1546 brcmf_pcie_write_reg32(devinfo, addr, value);
1550 static int brcmf_pcie_buscoreprep(void *ctx)
1552 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)ctx;
1555 err = brcmf_pcie_get_resource(devinfo);
1557 /* Set CC watchdog to reset all the cores on the chip to bring
1558 * back dongle to a sane state.
1560 brcmf_pcie_buscore_write32(ctx, CORE_CC_REG(SI_ENUM_BASE,
1569 static void brcmf_pcie_buscore_exitdl(void *ctx, struct brcmf_chip *chip,
1572 struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)ctx;
1574 brcmf_pcie_write_tcm32(devinfo, 0, rstvec);
1578 static const struct brcmf_buscore_ops brcmf_pcie_buscore_ops = {
1579 .prepare = brcmf_pcie_buscoreprep,
1580 .exit_dl = brcmf_pcie_buscore_exitdl,
1581 .read32 = brcmf_pcie_buscore_read32,
1582 .write32 = brcmf_pcie_buscore_write32,
1585 static void brcmf_pcie_setup(struct device *dev, const struct firmware *fw,
1586 void *nvram, u32 nvram_len)
1588 struct brcmf_bus *bus = dev_get_drvdata(dev);
1589 struct brcmf_pciedev *pcie_bus_dev = bus->bus_priv.pcie;
1590 struct brcmf_pciedev_info *devinfo = pcie_bus_dev->devinfo;
1591 struct brcmf_commonring **flowrings;
1595 brcmf_pcie_attach(devinfo);
1597 ret = brcmf_pcie_download_fw_nvram(devinfo, fw, nvram, nvram_len);
1601 devinfo->state = BRCMFMAC_PCIE_STATE_UP;
1603 ret = brcmf_pcie_init_ringbuffers(devinfo);
1607 ret = brcmf_pcie_init_scratchbuffers(devinfo);
1611 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
1612 ret = brcmf_pcie_request_irq(devinfo);
1616 /* hook the commonrings in the bus structure. */
1617 for (i = 0; i < BRCMF_NROF_COMMON_MSGRINGS; i++)
1618 bus->msgbuf->commonrings[i] =
1619 &devinfo->shared.commonrings[i]->commonring;
1621 flowrings = kcalloc(devinfo->shared.nrof_flowrings, sizeof(flowrings),
1626 for (i = 0; i < devinfo->shared.nrof_flowrings; i++)
1627 flowrings[i] = &devinfo->shared.flowrings[i].commonring;
1628 bus->msgbuf->flowrings = flowrings;
1630 bus->msgbuf->rx_dataoffset = devinfo->shared.rx_dataoffset;
1631 bus->msgbuf->max_rxbufpost = devinfo->shared.max_rxbufpost;
1632 bus->msgbuf->nrof_flowrings = devinfo->shared.nrof_flowrings;
1634 init_waitqueue_head(&devinfo->mbdata_resp_wait);
1636 brcmf_pcie_intr_enable(devinfo);
1637 if (brcmf_pcie_attach_bus(bus->dev) == 0)
1640 brcmf_pcie_bus_console_read(devinfo);
1643 device_release_driver(dev);
1647 brcmf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1650 struct brcmf_pciedev_info *devinfo;
1651 struct brcmf_pciedev *pcie_bus_dev;
1652 struct brcmf_bus *bus;
1654 brcmf_dbg(PCIE, "Enter %x:%x\n", pdev->vendor, pdev->device);
1657 devinfo = kzalloc(sizeof(*devinfo), GFP_KERNEL);
1658 if (devinfo == NULL)
1661 devinfo->pdev = pdev;
1662 pcie_bus_dev = NULL;
1663 devinfo->ci = brcmf_chip_attach(devinfo, &brcmf_pcie_buscore_ops);
1664 if (IS_ERR(devinfo->ci)) {
1665 ret = PTR_ERR(devinfo->ci);
1670 pcie_bus_dev = kzalloc(sizeof(*pcie_bus_dev), GFP_KERNEL);
1671 if (pcie_bus_dev == NULL) {
1676 bus = kzalloc(sizeof(*bus), GFP_KERNEL);
1681 bus->msgbuf = kzalloc(sizeof(*bus->msgbuf), GFP_KERNEL);
1688 /* hook it all together. */
1689 pcie_bus_dev->devinfo = devinfo;
1690 pcie_bus_dev->bus = bus;
1691 bus->dev = &pdev->dev;
1692 bus->bus_priv.pcie = pcie_bus_dev;
1693 bus->ops = &brcmf_pcie_bus_ops;
1694 bus->proto_type = BRCMF_PROTO_MSGBUF;
1695 bus->chip = devinfo->coreid;
1696 bus->wowl_supported = pci_pme_capable(pdev, PCI_D3hot);
1697 dev_set_drvdata(&pdev->dev, bus);
1699 ret = brcmf_pcie_get_fwnames(devinfo);
1703 ret = brcmf_fw_get_firmwares(bus->dev, BRCMF_FW_REQUEST_NVRAM |
1704 BRCMF_FW_REQ_NV_OPTIONAL,
1705 devinfo->fw_name, devinfo->nvram_name,
1713 brcmf_err("failed %x:%x\n", pdev->vendor, pdev->device);
1714 brcmf_pcie_release_resource(devinfo);
1716 brcmf_chip_detach(devinfo->ci);
1717 kfree(pcie_bus_dev);
1724 brcmf_pcie_remove(struct pci_dev *pdev)
1726 struct brcmf_pciedev_info *devinfo;
1727 struct brcmf_bus *bus;
1729 brcmf_dbg(PCIE, "Enter\n");
1731 bus = dev_get_drvdata(&pdev->dev);
1735 devinfo = bus->bus_priv.pcie->devinfo;
1737 devinfo->state = BRCMFMAC_PCIE_STATE_DOWN;
1739 brcmf_pcie_intr_disable(devinfo);
1741 brcmf_detach(&pdev->dev);
1743 kfree(bus->bus_priv.pcie);
1744 kfree(bus->msgbuf->flowrings);
1748 brcmf_pcie_release_irq(devinfo);
1749 brcmf_pcie_release_scratchbuffers(devinfo);
1750 brcmf_pcie_release_ringbuffers(devinfo);
1751 brcmf_pcie_reset_device(devinfo);
1752 brcmf_pcie_release_resource(devinfo);
1755 brcmf_chip_detach(devinfo->ci);
1758 dev_set_drvdata(&pdev->dev, NULL);
1765 static int brcmf_pcie_suspend(struct pci_dev *pdev, pm_message_t state)
1767 struct brcmf_pciedev_info *devinfo;
1768 struct brcmf_bus *bus;
1771 brcmf_dbg(PCIE, "Enter, state=%d, pdev=%p\n", state.event, pdev);
1773 bus = dev_get_drvdata(&pdev->dev);
1774 devinfo = bus->bus_priv.pcie->devinfo;
1776 brcmf_bus_change_state(bus, BRCMF_BUS_DOWN);
1778 devinfo->mbdata_completed = false;
1779 brcmf_pcie_send_mb_data(devinfo, BRCMF_H2D_HOST_D3_INFORM);
1781 wait_event_timeout(devinfo->mbdata_resp_wait,
1782 devinfo->mbdata_completed,
1783 msecs_to_jiffies(BRCMF_PCIE_MBDATA_TIMEOUT));
1784 if (!devinfo->mbdata_completed) {
1785 brcmf_err("Timeout on response for entering D3 substate\n");
1788 brcmf_pcie_send_mb_data(devinfo, BRCMF_H2D_HOST_D0_INFORM_IN_USE);
1790 err = pci_save_state(pdev);
1792 brcmf_err("pci_save_state failed, err=%d\n", err);
1793 if ((err) || (!devinfo->wowl_enabled)) {
1794 brcmf_chip_detach(devinfo->ci);
1796 brcmf_pcie_remove(pdev);
1800 return pci_prepare_to_sleep(pdev);
1803 static int brcmf_pcie_resume(struct pci_dev *pdev)
1805 struct brcmf_pciedev_info *devinfo;
1806 struct brcmf_bus *bus;
1809 bus = dev_get_drvdata(&pdev->dev);
1810 brcmf_dbg(PCIE, "Enter, pdev=%p, bus=%p\n", pdev, bus);
1812 err = pci_set_power_state(pdev, PCI_D0);
1814 brcmf_err("pci_set_power_state failed, err=%d\n", err);
1817 pci_restore_state(pdev);
1818 pci_enable_wake(pdev, PCI_D3hot, false);
1819 pci_enable_wake(pdev, PCI_D3cold, false);
1821 /* Check if device is still up and running, if so we are ready */
1823 devinfo = bus->bus_priv.pcie->devinfo;
1824 if (brcmf_pcie_read_reg32(devinfo,
1825 BRCMF_PCIE_PCIE2REG_INTMASK) != 0) {
1826 if (brcmf_pcie_send_mb_data(devinfo,
1827 BRCMF_H2D_HOST_D0_INFORM))
1829 brcmf_dbg(PCIE, "Hot resume, continue....\n");
1830 brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
1831 brcmf_bus_change_state(bus, BRCMF_BUS_DATA);
1832 brcmf_pcie_intr_enable(devinfo);
1839 devinfo = bus->bus_priv.pcie->devinfo;
1840 brcmf_chip_detach(devinfo->ci);
1842 brcmf_pcie_remove(pdev);
1844 err = brcmf_pcie_probe(pdev, NULL);
1846 brcmf_err("probe after resume failed, err=%d\n", err);
1852 #endif /* CONFIG_PM */
1855 #define BRCMF_PCIE_DEVICE(dev_id) { BRCM_PCIE_VENDOR_ID_BROADCOM, dev_id,\
1856 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_OTHER << 8, 0xffff00, 0 }
1858 static struct pci_device_id brcmf_pcie_devid_table[] = {
1859 BRCMF_PCIE_DEVICE(BRCM_PCIE_4354_DEVICE_ID),
1860 BRCMF_PCIE_DEVICE(BRCM_PCIE_4356_DEVICE_ID),
1861 BRCMF_PCIE_DEVICE(BRCM_PCIE_43567_DEVICE_ID),
1862 BRCMF_PCIE_DEVICE(BRCM_PCIE_43570_DEVICE_ID),
1863 BRCMF_PCIE_DEVICE(BRCM_PCIE_43602_DEVICE_ID),
1864 BRCMF_PCIE_DEVICE(BRCM_PCIE_43602_2G_DEVICE_ID),
1865 BRCMF_PCIE_DEVICE(BRCM_PCIE_43602_5G_DEVICE_ID),
1866 { /* end: all zeroes */ }
1870 MODULE_DEVICE_TABLE(pci, brcmf_pcie_devid_table);
1873 static struct pci_driver brcmf_pciedrvr = {
1875 .name = KBUILD_MODNAME,
1876 .id_table = brcmf_pcie_devid_table,
1877 .probe = brcmf_pcie_probe,
1878 .remove = brcmf_pcie_remove,
1880 .suspend = brcmf_pcie_suspend,
1881 .resume = brcmf_pcie_resume
1882 #endif /* CONFIG_PM */
1886 void brcmf_pcie_register(void)
1890 brcmf_dbg(PCIE, "Enter\n");
1891 err = pci_register_driver(&brcmf_pciedrvr);
1893 brcmf_err("PCIE driver registration failed, err=%d\n", err);
1897 void brcmf_pcie_exit(void)
1899 brcmf_dbg(PCIE, "Enter\n");
1900 pci_unregister_driver(&brcmf_pciedrvr);