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 /** 97 * brcmf_feat_iovar_int_get() - determine feature through iovar query. 98 * 99 * @ifp: interface to query. 100 * @id: feature id. 101 * @name: iovar name. 102 */ 103 static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp, 104 enum brcmf_feat_id id, char *name) 105 { 106 u32 data; 107 int err; 108 109 /* we need to know firmware error */ 110 ifp->fwil_fwerr = true; 111 112 err = brcmf_fil_iovar_int_get(ifp, name, &data); 113 if (err == 0) { 114 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]); 115 ifp->drvr->feat_flags |= BIT(id); 116 } else { 117 brcmf_dbg(TRACE, "%s feature check failed: %d\n", 118 brcmf_feat_names[id], err); 119 } 120 121 ifp->fwil_fwerr = false; 122 } 123 124 static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp, 125 enum brcmf_feat_id id, char *name, 126 const void *data, size_t len) 127 { 128 int err; 129 130 /* we need to know firmware error */ 131 ifp->fwil_fwerr = true; 132 133 err = brcmf_fil_iovar_data_set(ifp, name, data, len); 134 if (err != -BRCMF_FW_UNSUPPORTED) { 135 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]); 136 ifp->drvr->feat_flags |= BIT(id); 137 } else { 138 brcmf_dbg(TRACE, "%s feature check failed: %d\n", 139 brcmf_feat_names[id], err); 140 } 141 142 ifp->fwil_fwerr = false; 143 } 144 145 #define MAX_CAPS_BUFFER_SIZE 512 146 static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp) 147 { 148 char caps[MAX_CAPS_BUFFER_SIZE]; 149 enum brcmf_feat_id id; 150 int i, err; 151 152 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps)); 153 if (err) { 154 brcmf_err("could not get firmware cap (%d)\n", err); 155 return; 156 } 157 158 brcmf_dbg(INFO, "[ %s]\n", caps); 159 160 for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) { 161 if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) { 162 id = brcmf_fwcap_map[i].feature; 163 brcmf_dbg(INFO, "enabling feature: %s\n", 164 brcmf_feat_names[id]); 165 ifp->drvr->feat_flags |= BIT(id); 166 } 167 } 168 } 169 170 /** 171 * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs. 172 * 173 * @seq: sequence for debugfs entry. 174 * @data: raw data pointer. 175 */ 176 static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data) 177 { 178 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); 179 struct brcmf_if *ifp = brcmf_get_ifp(bus_if->drvr, 0); 180 char caps[MAX_CAPS_BUFFER_SIZE + 1] = { }; 181 char *tmp; 182 int err; 183 184 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps)); 185 if (err) { 186 brcmf_err("could not get firmware cap (%d)\n", err); 187 return err; 188 } 189 190 /* Put every capability in a new line */ 191 for (tmp = caps; *tmp; tmp++) { 192 if (*tmp == ' ') 193 *tmp = '\n'; 194 } 195 196 /* Usually there is a space at the end of capabilities string */ 197 seq_printf(seq, "%s", caps); 198 /* So make sure we don't print two line breaks */ 199 if (tmp > caps && *(tmp - 1) != '\n') 200 seq_printf(seq, "\n"); 201 202 return 0; 203 } 204 205 void brcmf_feat_attach(struct brcmf_pub *drvr) 206 { 207 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0); 208 struct brcmf_pno_macaddr_le pfn_mac; 209 struct brcmf_gscan_config gscan_cfg; 210 u32 wowl_cap; 211 s32 err; 212 213 brcmf_feat_firmware_capabilities(ifp); 214 memset(&gscan_cfg, 0, sizeof(gscan_cfg)); 215 if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID && 216 drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID) 217 brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN, 218 "pfn_gscan_cfg", 219 &gscan_cfg, sizeof(gscan_cfg)); 220 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn"); 221 if (drvr->bus_if->wowl_supported) 222 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl"); 223 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) { 224 err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap); 225 if (!err) { 226 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND); 227 if (wowl_cap & BRCMF_WOWL_PFN_FOUND) 228 ifp->drvr->feat_flags |= 229 BIT(BRCMF_FEAT_WOWL_ND); 230 if (wowl_cap & BRCMF_WOWL_GTK_FAILURE) 231 ifp->drvr->feat_flags |= 232 BIT(BRCMF_FEAT_WOWL_GTK); 233 } 234 } 235 /* MBSS does not work for 43362 */ 236 if (drvr->bus_if->chip == BRCM_CC_43362_CHIP_ID) 237 ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS); 238 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode"); 239 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable"); 240 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp"); 241 242 pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER; 243 err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac, 244 sizeof(pfn_mac)); 245 if (!err) 246 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC); 247 248 if (drvr->settings->feature_disable) { 249 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n", 250 ifp->drvr->feat_flags, 251 drvr->settings->feature_disable); 252 ifp->drvr->feat_flags &= ~drvr->settings->feature_disable; 253 } 254 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa"); 255 256 /* set chip related quirks */ 257 switch (drvr->bus_if->chip) { 258 case BRCM_CC_43236_CHIP_ID: 259 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH); 260 break; 261 case BRCM_CC_4329_CHIP_ID: 262 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC); 263 break; 264 default: 265 /* no quirks */ 266 break; 267 } 268 } 269 270 void brcmf_feat_debugfs_create(struct brcmf_pub *drvr) 271 { 272 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read); 273 brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read); 274 } 275 276 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id) 277 { 278 return (ifp->drvr->feat_flags & BIT(id)); 279 } 280 281 bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp, 282 enum brcmf_feat_quirk quirk) 283 { 284 return (ifp->drvr->chip_quirks & BIT(quirk)); 285 } 286