1 // SPDX-License-Identifier: ISC 2 /* 3 * Copyright (c) 2014 Broadcom Corporation 4 */ 5 6 #include <linux/netdevice.h> 7 #include <linux/module.h> 8 9 #include <brcm_hw_ids.h> 10 #include <brcmu_wifi.h> 11 #include "core.h" 12 #include "bus.h" 13 #include "debug.h" 14 #include "fwil.h" 15 #include "fwil_types.h" 16 #include "feature.h" 17 #include "common.h" 18 19 #define BRCMF_FW_UNSUPPORTED 23 20 21 /* 22 * expand feature list to array of feature strings. 23 */ 24 #define BRCMF_FEAT_DEF(_f) \ 25 #_f, 26 static const char *brcmf_feat_names[] = { 27 BRCMF_FEAT_LIST 28 }; 29 #undef BRCMF_FEAT_DEF 30 31 struct brcmf_feat_fwcap { 32 enum brcmf_feat_id feature; 33 const char * const fwcap_id; 34 }; 35 36 static const struct brcmf_feat_fwcap brcmf_fwcap_map[] = { 37 { BRCMF_FEAT_MBSS, "mbss" }, 38 { BRCMF_FEAT_MCHAN, "mchan" }, 39 { BRCMF_FEAT_P2P, "p2p" }, 40 { BRCMF_FEAT_MONITOR, "monitor" }, 41 { BRCMF_FEAT_MONITOR_FLAG, "rtap" }, 42 { BRCMF_FEAT_MONITOR_FMT_RADIOTAP, "rtap" }, 43 { BRCMF_FEAT_DOT11H, "802.11h" }, 44 { BRCMF_FEAT_SAE, "sae" }, 45 { BRCMF_FEAT_FWAUTH, "idauth" }, 46 }; 47 48 #ifdef DEBUG 49 /* 50 * expand quirk list to array of quirk strings. 51 */ 52 #define BRCMF_QUIRK_DEF(_q) \ 53 #_q, 54 static const char * const brcmf_quirk_names[] = { 55 BRCMF_QUIRK_LIST 56 }; 57 #undef BRCMF_QUIRK_DEF 58 59 /** 60 * brcmf_feat_debugfs_read() - expose feature info to debugfs. 61 * 62 * @seq: sequence for debugfs entry. 63 * @data: raw data pointer. 64 */ 65 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data) 66 { 67 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); 68 u32 feats = bus_if->drvr->feat_flags; 69 u32 quirks = bus_if->drvr->chip_quirks; 70 int id; 71 72 seq_printf(seq, "Features: %08x\n", feats); 73 for (id = 0; id < BRCMF_FEAT_LAST; id++) 74 if (feats & BIT(id)) 75 seq_printf(seq, "\t%s\n", brcmf_feat_names[id]); 76 seq_printf(seq, "\nQuirks: %08x\n", quirks); 77 for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++) 78 if (quirks & BIT(id)) 79 seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]); 80 return 0; 81 } 82 #else 83 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data) 84 { 85 return 0; 86 } 87 #endif /* DEBUG */ 88 89 struct brcmf_feat_fwfeat { 90 const char * const fwid; 91 u32 feat_flags; 92 }; 93 94 static const struct brcmf_feat_fwfeat brcmf_feat_fwfeat_map[] = { 95 /* brcmfmac43602-pcie.ap.bin from linux-firmware.git commit ea1178515b88 */ 96 { "01-6cb8e269", BIT(BRCMF_FEAT_MONITOR) }, 97 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 52442afee990 */ 98 { "01-c47a91a4", BIT(BRCMF_FEAT_MONITOR) }, 99 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 211de1679a68 */ 100 { "01-801fb449", BIT(BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR) }, 101 /* brcmfmac4366c-pcie.bin from linux-firmware.git commit 211de1679a68 */ 102 { "01-d2cbb8fd", BIT(BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR) }, 103 }; 104 105 static void brcmf_feat_firmware_overrides(struct brcmf_pub *drv) 106 { 107 const struct brcmf_feat_fwfeat *e; 108 u32 feat_flags = 0; 109 int i; 110 111 for (i = 0; i < ARRAY_SIZE(brcmf_feat_fwfeat_map); i++) { 112 e = &brcmf_feat_fwfeat_map[i]; 113 if (!strcmp(e->fwid, drv->fwver)) { 114 feat_flags = e->feat_flags; 115 break; 116 } 117 } 118 119 if (!feat_flags) 120 return; 121 122 for (i = 0; i < BRCMF_FEAT_LAST; i++) 123 if (feat_flags & BIT(i)) 124 brcmf_dbg(INFO, "enabling firmware feature: %s\n", 125 brcmf_feat_names[i]); 126 drv->feat_flags |= feat_flags; 127 } 128 129 /** 130 * brcmf_feat_iovar_int_get() - determine feature through iovar query. 131 * 132 * @ifp: interface to query. 133 * @id: feature id. 134 * @name: iovar name. 135 */ 136 static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp, 137 enum brcmf_feat_id id, char *name) 138 { 139 u32 data; 140 int err; 141 142 /* we need to know firmware error */ 143 ifp->fwil_fwerr = true; 144 145 err = brcmf_fil_iovar_int_get(ifp, name, &data); 146 if (err != -BRCMF_FW_UNSUPPORTED) { 147 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]); 148 ifp->drvr->feat_flags |= BIT(id); 149 } else { 150 brcmf_dbg(TRACE, "%s feature check failed: %d\n", 151 brcmf_feat_names[id], err); 152 } 153 154 ifp->fwil_fwerr = false; 155 } 156 157 static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp, 158 enum brcmf_feat_id id, char *name, 159 const void *data, size_t len) 160 { 161 int err; 162 163 /* we need to know firmware error */ 164 ifp->fwil_fwerr = true; 165 166 err = brcmf_fil_iovar_data_set(ifp, name, data, len); 167 if (err != -BRCMF_FW_UNSUPPORTED) { 168 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]); 169 ifp->drvr->feat_flags |= BIT(id); 170 } else { 171 brcmf_dbg(TRACE, "%s feature check failed: %d\n", 172 brcmf_feat_names[id], err); 173 } 174 175 ifp->fwil_fwerr = false; 176 } 177 178 #define MAX_CAPS_BUFFER_SIZE 768 179 static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp) 180 { 181 struct brcmf_pub *drvr = ifp->drvr; 182 char caps[MAX_CAPS_BUFFER_SIZE]; 183 enum brcmf_feat_id id; 184 int i, err; 185 186 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps)); 187 if (err) { 188 bphy_err(drvr, "could not get firmware cap (%d)\n", err); 189 return; 190 } 191 192 brcmf_dbg(INFO, "[ %s]\n", caps); 193 194 for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) { 195 if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) { 196 id = brcmf_fwcap_map[i].feature; 197 brcmf_dbg(INFO, "enabling feature: %s\n", 198 brcmf_feat_names[id]); 199 ifp->drvr->feat_flags |= BIT(id); 200 } 201 } 202 } 203 204 /** 205 * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs. 206 * 207 * @seq: sequence for debugfs entry. 208 * @data: raw data pointer. 209 */ 210 static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data) 211 { 212 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); 213 struct brcmf_pub *drvr = bus_if->drvr; 214 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0); 215 char caps[MAX_CAPS_BUFFER_SIZE + 1] = { }; 216 char *tmp; 217 int err; 218 219 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps)); 220 if (err) { 221 bphy_err(drvr, "could not get firmware cap (%d)\n", err); 222 return err; 223 } 224 225 /* Put every capability in a new line */ 226 for (tmp = caps; *tmp; tmp++) { 227 if (*tmp == ' ') 228 *tmp = '\n'; 229 } 230 231 /* Usually there is a space at the end of capabilities string */ 232 seq_printf(seq, "%s", caps); 233 /* So make sure we don't print two line breaks */ 234 if (tmp > caps && *(tmp - 1) != '\n') 235 seq_printf(seq, "\n"); 236 237 return 0; 238 } 239 240 void brcmf_feat_attach(struct brcmf_pub *drvr) 241 { 242 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0); 243 struct brcmf_pno_macaddr_le pfn_mac; 244 struct brcmf_gscan_config gscan_cfg; 245 u32 wowl_cap; 246 s32 err; 247 248 brcmf_feat_firmware_capabilities(ifp); 249 memset(&gscan_cfg, 0, sizeof(gscan_cfg)); 250 if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID && 251 drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID && 252 drvr->bus_if->chip != BRCM_CC_43454_CHIP_ID && 253 drvr->bus_if->chip != CY_CC_43439_CHIP_ID) 254 brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN, 255 "pfn_gscan_cfg", 256 &gscan_cfg, sizeof(gscan_cfg)); 257 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn"); 258 if (drvr->bus_if->wowl_supported) 259 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl"); 260 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) { 261 err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap); 262 if (!err) { 263 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND); 264 if (wowl_cap & BRCMF_WOWL_PFN_FOUND) 265 ifp->drvr->feat_flags |= 266 BIT(BRCMF_FEAT_WOWL_ND); 267 if (wowl_cap & BRCMF_WOWL_GTK_FAILURE) 268 ifp->drvr->feat_flags |= 269 BIT(BRCMF_FEAT_WOWL_GTK); 270 } 271 } 272 /* MBSS does not work for all chips */ 273 switch (drvr->bus_if->chip) { 274 case BRCM_CC_4330_CHIP_ID: 275 case BRCM_CC_43362_CHIP_ID: 276 ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS); 277 break; 278 default: 279 break; 280 } 281 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode"); 282 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable"); 283 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp"); 284 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_DUMP_OBSS, "dump_obss"); 285 286 pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER; 287 err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac, 288 sizeof(pfn_mac)); 289 if (!err) 290 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC); 291 292 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa"); 293 294 if (drvr->settings->feature_disable) { 295 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n", 296 ifp->drvr->feat_flags, 297 drvr->settings->feature_disable); 298 ifp->drvr->feat_flags &= ~drvr->settings->feature_disable; 299 } 300 301 brcmf_feat_firmware_overrides(drvr); 302 303 /* set chip related quirks */ 304 switch (drvr->bus_if->chip) { 305 case BRCM_CC_43236_CHIP_ID: 306 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH); 307 break; 308 case BRCM_CC_4329_CHIP_ID: 309 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC); 310 break; 311 default: 312 /* no quirks */ 313 break; 314 } 315 } 316 317 void brcmf_feat_debugfs_create(struct brcmf_pub *drvr) 318 { 319 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read); 320 brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read); 321 } 322 323 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id) 324 { 325 return (ifp->drvr->feat_flags & BIT(id)); 326 } 327 328 bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp, 329 enum brcmf_feat_quirk quirk) 330 { 331 return (ifp->drvr->chip_quirks & BIT(quirk)); 332 } 333