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