drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c

   1 /*
   2  * Copyright (c) 2010 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/string.h>
  19 #include <linux/netdevice.h>
  20 #include <brcmu_wifi.h>
  21 #include <brcmu_utils.h>
  22 #include "core.h"
  23 #include "bus.h"
  24 #include "debug.h"
  25 #include "fwil.h"
  26 #include "fwil_types.h"
  27 #include "tracepoint.h"
  28 #include "common.h"
  29
  30 const u8 ALLFFMAC[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
  31
  32 #define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40
  33 #define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40
  34
  35 /* boost value for RSSI_DELTA in preferred join selection */
  36 #define BRCMF_JOIN_PREF_RSSI_BOOST      8
  37
  38 #define BRCMF_DEFAULT_TXGLOM_SIZE       32  /* max tx frames in glom chain */
  39
  40 static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
  41 module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0);
  42 MODULE_PARM_DESC(txglomsz, "Maximum tx packet chain size [SDIO]");
  43
  44 /* Debug level configuration. See debug.h for bits, sysfs modifiable */
  45 int brcmf_msg_level;
  46 module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR);
  47 MODULE_PARM_DESC(debug, "Level of debug output");
  48
  49 static int brcmf_p2p_enable;
  50 module_param_named(p2pon, brcmf_p2p_enable, int, 0);
  51 MODULE_PARM_DESC(p2pon, "Enable legacy p2p management functionality");
  52
  53 static int brcmf_feature_disable;
  54 module_param_named(feature_disable, brcmf_feature_disable, int, 0);
  55 MODULE_PARM_DESC(feature_disable, "Disable features");
  56
  57 static char brcmf_firmware_path[BRCMF_FW_ALTPATH_LEN];
  58 module_param_string(alternative_fw_path, brcmf_firmware_path,
  59                     BRCMF_FW_ALTPATH_LEN, S_IRUSR);
  60 MODULE_PARM_DESC(alternative_fw_path, "Alternative firmware path");
  61
  62 static int brcmf_fcmode;
  63 module_param_named(fcmode, brcmf_fcmode, int, 0);
  64 MODULE_PARM_DESC(fcmode, "Mode of firmware signalled flow control");
  65
  66 static int brcmf_roamoff;
  67 module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR);
  68 MODULE_PARM_DESC(roamoff, "Do not use internal roaming engine");
  69
  70 #ifdef DEBUG
  71 /* always succeed brcmf_bus_start() */
  72 static int brcmf_ignore_probe_fail;
  73 module_param_named(ignore_probe_fail, brcmf_ignore_probe_fail, int, 0);
  74 MODULE_PARM_DESC(ignore_probe_fail, "always succeed probe for debugging");
  75 #endif
  76
  77 struct brcmf_mp_global_t brcmf_mp_global;
  78
  79 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
  80 {
  81         s8 eventmask[BRCMF_EVENTING_MASK_LEN];
  82         u8 buf[BRCMF_DCMD_SMLEN];
  83         struct brcmf_join_pref_params join_pref_params[2];
  84         struct brcmf_rev_info_le revinfo;
  85         struct brcmf_rev_info *ri;
  86         char *ptr;
  87         s32 err;
  88
  89         /* retreive mac address */
  90         err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr,
  91                                        sizeof(ifp->mac_addr));
  92         if (err < 0) {
  93                 brcmf_err("Retreiving cur_etheraddr failed, %d\n", err);
  94                 goto done;
  95         }
  96         memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac));
  97
  98         err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO,
  99                                      &revinfo, sizeof(revinfo));
 100         ri = &ifp->drvr->revinfo;
 101         if (err < 0) {
 102                 brcmf_err("retrieving revision info failed, %d\n", err);
 103         } else {
 104                 ri->vendorid = le32_to_cpu(revinfo.vendorid);
 105                 ri->deviceid = le32_to_cpu(revinfo.deviceid);
 106                 ri->radiorev = le32_to_cpu(revinfo.radiorev);
 107                 ri->chiprev = le32_to_cpu(revinfo.chiprev);
 108                 ri->corerev = le32_to_cpu(revinfo.corerev);
 109                 ri->boardid = le32_to_cpu(revinfo.boardid);
 110                 ri->boardvendor = le32_to_cpu(revinfo.boardvendor);
 111                 ri->boardrev = le32_to_cpu(revinfo.boardrev);
 112                 ri->driverrev = le32_to_cpu(revinfo.driverrev);
 113                 ri->ucoderev = le32_to_cpu(revinfo.ucoderev);
 114                 ri->bus = le32_to_cpu(revinfo.bus);
 115                 ri->chipnum = le32_to_cpu(revinfo.chipnum);
 116                 ri->phytype = le32_to_cpu(revinfo.phytype);
 117                 ri->phyrev = le32_to_cpu(revinfo.phyrev);
 118                 ri->anarev = le32_to_cpu(revinfo.anarev);
 119                 ri->chippkg = le32_to_cpu(revinfo.chippkg);
 120                 ri->nvramrev = le32_to_cpu(revinfo.nvramrev);
 121         }
 122         ri->result = err;
 123
 124         /* query for 'ver' to get version info from firmware */
 125         memset(buf, 0, sizeof(buf));
 126         strcpy(buf, "ver");
 127         err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf));
 128         if (err < 0) {
 129                 brcmf_err("Retreiving version information failed, %d\n",
 130                           err);
 131                 goto done;
 132         }
 133         ptr = (char *)buf;
 134         strsep(&ptr, "\n");
 135
 136         /* Print fw version info */
 137         brcmf_err("Firmware version = %s\n", buf);
 138
 139         /* locate firmware version number for ethtool */
 140         ptr = strrchr(buf, ' ') + 1;
 141         strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver));
 142
 143         /* set mpc */
 144         err = brcmf_fil_iovar_int_set(ifp, "mpc", 1);
 145         if (err) {
 146                 brcmf_err("failed setting mpc\n");
 147                 goto done;
 148         }
 149
 150         /* Setup join_pref to select target by RSSI(with boost on 5GHz) */
 151         join_pref_params[0].type = BRCMF_JOIN_PREF_RSSI_DELTA;
 152         join_pref_params[0].len = 2;
 153         join_pref_params[0].rssi_gain = BRCMF_JOIN_PREF_RSSI_BOOST;
 154         join_pref_params[0].band = WLC_BAND_5G;
 155         join_pref_params[1].type = BRCMF_JOIN_PREF_RSSI;
 156         join_pref_params[1].len = 2;
 157         join_pref_params[1].rssi_gain = 0;
 158         join_pref_params[1].band = 0;
 159         err = brcmf_fil_iovar_data_set(ifp, "join_pref", join_pref_params,
 160                                        sizeof(join_pref_params));
 161         if (err)
 162                 brcmf_err("Set join_pref error (%d)\n", err);
 163
 164         /* Setup event_msgs, enable E_IF */
 165         err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask,
 166                                        BRCMF_EVENTING_MASK_LEN);
 167         if (err) {
 168                 brcmf_err("Get event_msgs error (%d)\n", err);
 169                 goto done;
 170         }
 171         setbit(eventmask, BRCMF_E_IF);
 172         err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask,
 173                                        BRCMF_EVENTING_MASK_LEN);
 174         if (err) {
 175                 brcmf_err("Set event_msgs error (%d)\n", err);
 176                 goto done;
 177         }
 178
 179         /* Setup default scan channel time */
 180         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME,
 181                                     BRCMF_DEFAULT_SCAN_CHANNEL_TIME);
 182         if (err) {
 183                 brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n",
 184                           err);
 185                 goto done;
 186         }
 187
 188         /* Setup default scan unassoc time */
 189         err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME,
 190                                     BRCMF_DEFAULT_SCAN_UNASSOC_TIME);
 191         if (err) {
 192                 brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n",
 193                           err);
 194                 goto done;
 195         }
 196
 197         /* Enable tx beamforming, errors can be ignored (not supported) */
 198         (void)brcmf_fil_iovar_int_set(ifp, "txbf", 1);
 199
 200         /* do bus specific preinit here */
 201         err = brcmf_bus_preinit(ifp->drvr->bus_if);
 202 done:
 203         return err;
 204 }
 205
 206 #if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG)
 207 void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...)
 208 {
 209         struct va_format vaf = {
 210                 .fmt = fmt,
 211         };
 212         va_list args;
 213
 214         va_start(args, fmt);
 215         vaf.va = &args;
 216         if (brcmf_msg_level & level)
 217                 pr_debug("%s %pV", func, &vaf);
 218         trace_brcmf_dbg(level, func, &vaf);
 219         va_end(args);
 220 }
 221 #endif
 222
 223 void brcmf_mp_attach(void)
 224 {
 225         strlcpy(brcmf_mp_global.firmware_path, brcmf_firmware_path,
 226                 BRCMF_FW_ALTPATH_LEN);
 227 }
 228
 229 int brcmf_mp_device_attach(struct brcmf_pub *drvr)
 230 {
 231         drvr->settings = kzalloc(sizeof(*drvr->settings), GFP_ATOMIC);
 232         if (!drvr->settings) {
 233                 brcmf_err("Failed to alloca storage space for settings\n");
 234                 return -ENOMEM;
 235         }
 236
 237         drvr->settings->sdiod_txglomsz = brcmf_sdiod_txglomsz;
 238         drvr->settings->p2p_enable = !!brcmf_p2p_enable;
 239         drvr->settings->feature_disable = brcmf_feature_disable;
 240         drvr->settings->fcmode = brcmf_fcmode;
 241         drvr->settings->roamoff = !!brcmf_roamoff;
 242 #ifdef DEBUG
 243         drvr->settings->ignore_probe_fail = !!brcmf_ignore_probe_fail;
 244 #endif
 245         return 0;
 246 }
 247
 248 void brcmf_mp_device_detach(struct brcmf_pub *drvr)
 249 {
 250         kfree(drvr->settings);
 251 }
 252