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1// SPDX-License-Identifier: ISC2/*3 * Copyright (c) 2014 Broadcom Corporation4 */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 "fwvid.h"17#include "feature.h"18#include "common.h"19 20#define BRCMF_FW_UNSUPPORTED 2321 22/*23 * expand feature list to array of feature strings.24 */25#define BRCMF_FEAT_DEF(_f) \26 #_f,27static const char *brcmf_feat_names[] = {28 BRCMF_FEAT_LIST29};30#undef BRCMF_FEAT_DEF31 32struct brcmf_feat_fwcap {33 enum brcmf_feat_id feature;34 const char * const fwcap_id;35};36 37static const struct brcmf_feat_fwcap brcmf_fwcap_map[] = {38 { BRCMF_FEAT_MBSS, "mbss" },39 { BRCMF_FEAT_MCHAN, "mchan" },40 { BRCMF_FEAT_P2P, "p2p" },41 { BRCMF_FEAT_MONITOR, "monitor" },42 { BRCMF_FEAT_MONITOR_FLAG, "rtap" },43 { BRCMF_FEAT_MONITOR_FMT_RADIOTAP, "rtap" },44 { BRCMF_FEAT_DOT11H, "802.11h" },45 { BRCMF_FEAT_SAE, "sae" },46 { BRCMF_FEAT_FWAUTH, "idauth" },47};48 49#ifdef DEBUG50/*51 * expand quirk list to array of quirk strings.52 */53#define BRCMF_QUIRK_DEF(_q) \54 #_q,55static const char * const brcmf_quirk_names[] = {56 BRCMF_QUIRK_LIST57};58#undef BRCMF_QUIRK_DEF59 60/**61 * brcmf_feat_debugfs_read() - expose feature info to debugfs.62 *63 * @seq: sequence for debugfs entry.64 * @data: raw data pointer.65 */66static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)67{68 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);69 u32 feats = bus_if->drvr->feat_flags;70 u32 quirks = bus_if->drvr->chip_quirks;71 int id;72 73 seq_printf(seq, "Features: %08x\n", feats);74 for (id = 0; id < BRCMF_FEAT_LAST; id++)75 if (feats & BIT(id))76 seq_printf(seq, "\t%s\n", brcmf_feat_names[id]);77 seq_printf(seq, "\nQuirks: %08x\n", quirks);78 for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++)79 if (quirks & BIT(id))80 seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]);81 return 0;82}83#else84static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)85{86 return 0;87}88#endif /* DEBUG */89 90struct brcmf_feat_fwfeat {91 const char * const fwid;92 u32 feat_flags;93};94 95static const struct brcmf_feat_fwfeat brcmf_feat_fwfeat_map[] = {96 /* brcmfmac43602-pcie.ap.bin from linux-firmware.git commit ea1178515b88 */97 { "01-6cb8e269", BIT(BRCMF_FEAT_MONITOR) },98 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 52442afee990 */99 { "01-c47a91a4", BIT(BRCMF_FEAT_MONITOR) },100 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 211de1679a68 */101 { "01-801fb449", BIT(BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR) },102 /* brcmfmac4366c-pcie.bin from linux-firmware.git commit 211de1679a68 */103 { "01-d2cbb8fd", BIT(BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR) },104};105 106static void brcmf_feat_firmware_overrides(struct brcmf_pub *drv)107{108 const struct brcmf_feat_fwfeat *e;109 u32 feat_flags = 0;110 int i;111 112 for (i = 0; i < ARRAY_SIZE(brcmf_feat_fwfeat_map); i++) {113 e = &brcmf_feat_fwfeat_map[i];114 if (!strcmp(e->fwid, drv->fwver)) {115 feat_flags = e->feat_flags;116 break;117 }118 }119 120 if (!feat_flags)121 return;122 123 for (i = 0; i < BRCMF_FEAT_LAST; i++)124 if (feat_flags & BIT(i))125 brcmf_dbg(INFO, "enabling firmware feature: %s\n",126 brcmf_feat_names[i]);127 drv->feat_flags |= feat_flags;128}129 130struct brcmf_feat_wlcfeat {131 u16 min_ver_major;132 u16 min_ver_minor;133 u32 feat_flags;134};135 136static const struct brcmf_feat_wlcfeat brcmf_feat_wlcfeat_map[] = {137 { 12, 0, BIT(BRCMF_FEAT_PMKID_V2) },138 { 13, 0, BIT(BRCMF_FEAT_PMKID_V3) },139};140 141static void brcmf_feat_wlc_version_overrides(struct brcmf_pub *drv)142{143 struct brcmf_if *ifp = brcmf_get_ifp(drv, 0);144 const struct brcmf_feat_wlcfeat *e;145 struct brcmf_wlc_version_le ver;146 u32 feat_flags = 0;147 int i, err, major, minor;148 149 err = brcmf_fil_iovar_data_get(ifp, "wlc_ver", &ver, sizeof(ver));150 if (err)151 return;152 153 major = le16_to_cpu(ver.wlc_ver_major);154 minor = le16_to_cpu(ver.wlc_ver_minor);155 156 brcmf_dbg(INFO, "WLC version: %d.%d\n", major, minor);157 158 for (i = 0; i < ARRAY_SIZE(brcmf_feat_wlcfeat_map); i++) {159 e = &brcmf_feat_wlcfeat_map[i];160 if (major > e->min_ver_major ||161 (major == e->min_ver_major &&162 minor >= e->min_ver_minor)) {163 feat_flags |= e->feat_flags;164 }165 }166 167 if (!feat_flags)168 return;169 170 for (i = 0; i < BRCMF_FEAT_LAST; i++)171 if (feat_flags & BIT(i))172 brcmf_dbg(INFO, "enabling firmware feature: %s\n",173 brcmf_feat_names[i]);174 drv->feat_flags |= feat_flags;175}176 177/**178 * brcmf_feat_iovar_int_get() - determine feature through iovar query.179 *180 * @ifp: interface to query.181 * @id: feature id.182 * @name: iovar name.183 */184static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp,185 enum brcmf_feat_id id, char *name)186{187 u32 data;188 int err;189 190 /* we need to know firmware error */191 ifp->fwil_fwerr = true;192 193 err = brcmf_fil_iovar_int_get(ifp, name, &data);194 if (err != -BRCMF_FW_UNSUPPORTED) {195 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);196 ifp->drvr->feat_flags |= BIT(id);197 } else {198 brcmf_dbg(TRACE, "%s feature check failed: %d\n",199 brcmf_feat_names[id], err);200 }201 202 ifp->fwil_fwerr = false;203}204 205static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp,206 enum brcmf_feat_id id, char *name,207 const void *data, size_t len)208{209 int err;210 211 /* we need to know firmware error */212 ifp->fwil_fwerr = true;213 214 err = brcmf_fil_iovar_data_set(ifp, name, data, len);215 if (err != -BRCMF_FW_UNSUPPORTED) {216 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);217 ifp->drvr->feat_flags |= BIT(id);218 } else {219 brcmf_dbg(TRACE, "%s feature check failed: %d\n",220 brcmf_feat_names[id], err);221 }222 223 ifp->fwil_fwerr = false;224}225 226#define MAX_CAPS_BUFFER_SIZE 768227static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp)228{229 struct brcmf_pub *drvr = ifp->drvr;230 char caps[MAX_CAPS_BUFFER_SIZE];231 enum brcmf_feat_id id;232 int i, err;233 234 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));235 if (err) {236 bphy_err(drvr, "could not get firmware cap (%d)\n", err);237 return;238 }239 240 brcmf_dbg(INFO, "[ %s]\n", caps);241 242 for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) {243 if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) {244 id = brcmf_fwcap_map[i].feature;245 brcmf_dbg(INFO, "enabling feature: %s\n",246 brcmf_feat_names[id]);247 ifp->drvr->feat_flags |= BIT(id);248 }249 }250}251 252/**253 * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs.254 *255 * @seq: sequence for debugfs entry.256 * @data: raw data pointer.257 */258static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data)259{260 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);261 struct brcmf_pub *drvr = bus_if->drvr;262 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);263 char caps[MAX_CAPS_BUFFER_SIZE + 1] = { };264 char *tmp;265 int err;266 267 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));268 if (err) {269 bphy_err(drvr, "could not get firmware cap (%d)\n", err);270 return err;271 }272 273 /* Put every capability in a new line */274 for (tmp = caps; *tmp; tmp++) {275 if (*tmp == ' ')276 *tmp = '\n';277 }278 279 /* Usually there is a space at the end of capabilities string */280 seq_printf(seq, "%s", caps);281 /* So make sure we don't print two line breaks */282 if (tmp > caps && *(tmp - 1) != '\n')283 seq_printf(seq, "\n");284 285 return 0;286}287 288void brcmf_feat_attach(struct brcmf_pub *drvr)289{290 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);291 struct brcmf_pno_macaddr_le pfn_mac;292 struct brcmf_gscan_config gscan_cfg;293 u32 wowl_cap;294 s32 err;295 296 brcmf_feat_firmware_capabilities(ifp);297 memset(&gscan_cfg, 0, sizeof(gscan_cfg));298 if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID &&299 drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID &&300 drvr->bus_if->chip != BRCM_CC_43454_CHIP_ID &&301 drvr->bus_if->chip != CY_CC_43439_CHIP_ID)302 brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN,303 "pfn_gscan_cfg",304 &gscan_cfg, sizeof(gscan_cfg));305 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn");306 if (drvr->bus_if->wowl_supported)307 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");308 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) {309 err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap);310 if (!err) {311 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND);312 if (wowl_cap & BRCMF_WOWL_PFN_FOUND)313 ifp->drvr->feat_flags |=314 BIT(BRCMF_FEAT_WOWL_ND);315 if (wowl_cap & BRCMF_WOWL_GTK_FAILURE)316 ifp->drvr->feat_flags |=317 BIT(BRCMF_FEAT_WOWL_GTK);318 }319 }320 /* MBSS does not work for all chips */321 switch (drvr->bus_if->chip) {322 case BRCM_CC_4330_CHIP_ID:323 case BRCM_CC_43362_CHIP_ID:324 ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS);325 break;326 default:327 break;328 }329 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode");330 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable");331 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp");332 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_DUMP_OBSS, "dump_obss");333 334 pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;335 err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac,336 sizeof(pfn_mac));337 if (!err)338 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC);339 340 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa");341 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_SCAN_V2, "scan_ver");342 343 brcmf_feat_wlc_version_overrides(drvr);344 brcmf_feat_firmware_overrides(drvr);345 346 brcmf_fwvid_feat_attach(ifp);347 348 if (drvr->settings->feature_disable) {349 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n",350 ifp->drvr->feat_flags,351 drvr->settings->feature_disable);352 ifp->drvr->feat_flags &= ~drvr->settings->feature_disable;353 }354 355 /* set chip related quirks */356 switch (drvr->bus_if->chip) {357 case BRCM_CC_43236_CHIP_ID:358 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH);359 break;360 case BRCM_CC_4329_CHIP_ID:361 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC);362 break;363 default:364 /* no quirks */365 break;366 }367}368 369void brcmf_feat_debugfs_create(struct brcmf_pub *drvr)370{371 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read);372 brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read);373}374 375bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)376{377 return (ifp->drvr->feat_flags & BIT(id));378}379 380bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp,381 enum brcmf_feat_quirk quirk)382{383 return (ifp->drvr->chip_quirks & BIT(quirk));384}385