1 /* 2 * Copyright (c) 2014 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/netdevice.h> 18 #include <linux/module.h> 19 20 #include <brcm_hw_ids.h> 21 #include <brcmu_wifi.h> 22 #include "core.h" 23 #include "bus.h" 24 #include "debug.h" 25 #include "fwil.h" 26 #include "fwil_types.h" 27 #include "feature.h" 28 #include "common.h" 29 30 #define BRCMF_FW_UNSUPPORTED 23 31 32 /* 33 * expand feature list to array of feature strings. 34 */ 35 #define BRCMF_FEAT_DEF(_f) \ 36 #_f, 37 static const char *brcmf_feat_names[] = { 38 BRCMF_FEAT_LIST 39 }; 40 #undef BRCMF_FEAT_DEF 41 42 struct brcmf_feat_fwcap { 43 enum brcmf_feat_id feature; 44 const char * const fwcap_id; 45 }; 46 47 static const struct brcmf_feat_fwcap brcmf_fwcap_map[] = { 48 { BRCMF_FEAT_MBSS, "mbss" }, 49 { BRCMF_FEAT_MCHAN, "mchan" }, 50 { BRCMF_FEAT_P2P, "p2p" }, 51 { BRCMF_FEAT_MONITOR, "monitor" }, 52 { BRCMF_FEAT_MONITOR_FMT_RADIOTAP, "rtap" }, 53 }; 54 55 #ifdef DEBUG 56 /* 57 * expand quirk list to array of quirk strings. 58 */ 59 #define BRCMF_QUIRK_DEF(_q) \ 60 #_q, 61 static const char * const brcmf_quirk_names[] = { 62 BRCMF_QUIRK_LIST 63 }; 64 #undef BRCMF_QUIRK_DEF 65 66 /** 67 * brcmf_feat_debugfs_read() - expose feature info to debugfs. 68 * 69 * @seq: sequence for debugfs entry. 70 * @data: raw data pointer. 71 */ 72 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data) 73 { 74 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); 75 u32 feats = bus_if->drvr->feat_flags; 76 u32 quirks = bus_if->drvr->chip_quirks; 77 int id; 78 79 seq_printf(seq, "Features: %08x\n", feats); 80 for (id = 0; id < BRCMF_FEAT_LAST; id++) 81 if (feats & BIT(id)) 82 seq_printf(seq, "\t%s\n", brcmf_feat_names[id]); 83 seq_printf(seq, "\nQuirks: %08x\n", quirks); 84 for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++) 85 if (quirks & BIT(id)) 86 seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]); 87 return 0; 88 } 89 #else 90 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data) 91 { 92 return 0; 93 } 94 #endif /* DEBUG */ 95 96 struct brcmf_feat_fwfeat { 97 const char * const fwid; 98 u32 feat_flags; 99 }; 100 101 static const struct brcmf_feat_fwfeat brcmf_feat_fwfeat_map[] = { 102 /* brcmfmac43602-pcie.ap.bin from linux-firmware.git commit ea1178515b88 */ 103 { "01-6cb8e269", BIT(BRCMF_FEAT_MONITOR) }, 104 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 52442afee990 */ 105 { "01-c47a91a4", BIT(BRCMF_FEAT_MONITOR) }, 106 }; 107 108 static void brcmf_feat_firmware_overrides(struct brcmf_pub *drv) 109 { 110 const struct brcmf_feat_fwfeat *e; 111 u32 feat_flags = 0; 112 int i; 113 114 for (i = 0; i < ARRAY_SIZE(brcmf_feat_fwfeat_map); i++) { 115 e = &brcmf_feat_fwfeat_map[i]; 116 if (!strcmp(e->fwid, drv->fwver)) { 117 feat_flags = e->feat_flags; 118 break; 119 } 120 } 121 122 if (!feat_flags) 123 return; 124 125 for (i = 0; i < BRCMF_FEAT_LAST; i++) 126 if (feat_flags & BIT(i)) 127 brcmf_dbg(INFO, "enabling firmware feature: %s\n", 128 brcmf_feat_names[i]); 129 drv->feat_flags |= feat_flags; 130 } 131 132 /** 133 * brcmf_feat_iovar_int_get() - determine feature through iovar query. 134 * 135 * @ifp: interface to query. 136 * @id: feature id. 137 * @name: iovar name. 138 */ 139 static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp, 140 enum brcmf_feat_id id, char *name) 141 { 142 u32 data; 143 int err; 144 145 /* we need to know firmware error */ 146 ifp->fwil_fwerr = true; 147 148 err = brcmf_fil_iovar_int_get(ifp, name, &data); 149 if (err == 0) { 150 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]); 151 ifp->drvr->feat_flags |= BIT(id); 152 } else { 153 brcmf_dbg(TRACE, "%s feature check failed: %d\n", 154 brcmf_feat_names[id], err); 155 } 156 157 ifp->fwil_fwerr = false; 158 } 159 160 static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp, 161 enum brcmf_feat_id id, char *name, 162 const void *data, size_t len) 163 { 164 int err; 165 166 /* we need to know firmware error */ 167 ifp->fwil_fwerr = true; 168 169 err = brcmf_fil_iovar_data_set(ifp, name, data, len); 170 if (err != -BRCMF_FW_UNSUPPORTED) { 171 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]); 172 ifp->drvr->feat_flags |= BIT(id); 173 } else { 174 brcmf_dbg(TRACE, "%s feature check failed: %d\n", 175 brcmf_feat_names[id], err); 176 } 177 178 ifp->fwil_fwerr = false; 179 } 180 181 #define MAX_CAPS_BUFFER_SIZE 768 182 static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp) 183 { 184 char caps[MAX_CAPS_BUFFER_SIZE]; 185 enum brcmf_feat_id id; 186 int i, err; 187 188 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps)); 189 if (err) { 190 brcmf_err("could not get firmware cap (%d)\n", err); 191 return; 192 } 193 194 brcmf_dbg(INFO, "[ %s]\n", caps); 195 196 for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) { 197 if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) { 198 id = brcmf_fwcap_map[i].feature; 199 brcmf_dbg(INFO, "enabling feature: %s\n", 200 brcmf_feat_names[id]); 201 ifp->drvr->feat_flags |= BIT(id); 202 } 203 } 204 } 205 206 /** 207 * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs. 208 * 209 * @seq: sequence for debugfs entry. 210 * @data: raw data pointer. 211 */ 212 static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data) 213 { 214 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); 215 struct brcmf_if *ifp = brcmf_get_ifp(bus_if->drvr, 0); 216 char caps[MAX_CAPS_BUFFER_SIZE + 1] = { }; 217 char *tmp; 218 int err; 219 220 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps)); 221 if (err) { 222 brcmf_err("could not get firmware cap (%d)\n", err); 223 return err; 224 } 225 226 /* Put every capability in a new line */ 227 for (tmp = caps; *tmp; tmp++) { 228 if (*tmp == ' ') 229 *tmp = '\n'; 230 } 231 232 /* Usually there is a space at the end of capabilities string */ 233 seq_printf(seq, "%s", caps); 234 /* So make sure we don't print two line breaks */ 235 if (tmp > caps && *(tmp - 1) != '\n') 236 seq_printf(seq, "\n"); 237 238 return 0; 239 } 240 241 void brcmf_feat_attach(struct brcmf_pub *drvr) 242 { 243 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0); 244 struct brcmf_pno_macaddr_le pfn_mac; 245 struct brcmf_gscan_config gscan_cfg; 246 u32 wowl_cap; 247 s32 err; 248 249 brcmf_feat_firmware_capabilities(ifp); 250 memset(&gscan_cfg, 0, sizeof(gscan_cfg)); 251 if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID && 252 drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID) 253 brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN, 254 "pfn_gscan_cfg", 255 &gscan_cfg, sizeof(gscan_cfg)); 256 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn"); 257 if (drvr->bus_if->wowl_supported) 258 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl"); 259 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) { 260 err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap); 261 if (!err) { 262 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND); 263 if (wowl_cap & BRCMF_WOWL_PFN_FOUND) 264 ifp->drvr->feat_flags |= 265 BIT(BRCMF_FEAT_WOWL_ND); 266 if (wowl_cap & BRCMF_WOWL_GTK_FAILURE) 267 ifp->drvr->feat_flags |= 268 BIT(BRCMF_FEAT_WOWL_GTK); 269 } 270 } 271 /* MBSS does not work for 43362 */ 272 if (drvr->bus_if->chip == BRCM_CC_43362_CHIP_ID) 273 ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS); 274 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode"); 275 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable"); 276 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp"); 277 278 pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER; 279 err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac, 280 sizeof(pfn_mac)); 281 if (!err) 282 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC); 283 284 if (drvr->settings->feature_disable) { 285 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n", 286 ifp->drvr->feat_flags, 287 drvr->settings->feature_disable); 288 ifp->drvr->feat_flags &= ~drvr->settings->feature_disable; 289 } 290 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa"); 291 292 brcmf_feat_firmware_overrides(drvr); 293 294 /* set chip related quirks */ 295 switch (drvr->bus_if->chip) { 296 case BRCM_CC_43236_CHIP_ID: 297 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH); 298 break; 299 case BRCM_CC_4329_CHIP_ID: 300 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC); 301 break; 302 default: 303 /* no quirks */ 304 break; 305 } 306 } 307 308 void brcmf_feat_debugfs_create(struct brcmf_pub *drvr) 309 { 310 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read); 311 brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read); 312 } 313 314 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id) 315 { 316 return (ifp->drvr->feat_flags & BIT(id)); 317 } 318 319 bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp, 320 enum brcmf_feat_quirk quirk) 321 { 322 return (ifp->drvr->chip_quirks & BIT(quirk)); 323 } 324