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