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 }; 52 53 #ifdef DEBUG 54 /* 55 * expand quirk list to array of quirk strings. 56 */ 57 #define BRCMF_QUIRK_DEF(_q) \ 58 #_q, 59 static const char * const brcmf_quirk_names[] = { 60 BRCMF_QUIRK_LIST 61 }; 62 #undef BRCMF_QUIRK_DEF 63 64 /** 65 * brcmf_feat_debugfs_read() - expose feature info to debugfs. 66 * 67 * @seq: sequence for debugfs entry. 68 * @data: raw data pointer. 69 */ 70 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data) 71 { 72 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private); 73 u32 feats = bus_if->drvr->feat_flags; 74 u32 quirks = bus_if->drvr->chip_quirks; 75 int id; 76 77 seq_printf(seq, "Features: %08x\n", feats); 78 for (id = 0; id < BRCMF_FEAT_LAST; id++) 79 if (feats & BIT(id)) 80 seq_printf(seq, "\t%s\n", brcmf_feat_names[id]); 81 seq_printf(seq, "\nQuirks: %08x\n", quirks); 82 for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++) 83 if (quirks & BIT(id)) 84 seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]); 85 return 0; 86 } 87 #else 88 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data) 89 { 90 return 0; 91 } 92 #endif /* DEBUG */ 93 94 /** 95 * brcmf_feat_iovar_int_get() - determine feature through iovar query. 96 * 97 * @ifp: interface to query. 98 * @id: feature id. 99 * @name: iovar name. 100 */ 101 static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp, 102 enum brcmf_feat_id id, char *name) 103 { 104 u32 data; 105 int err; 106 107 err = brcmf_fil_iovar_int_get(ifp, name, &data); 108 if (err == 0) { 109 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]); 110 ifp->drvr->feat_flags |= BIT(id); 111 } else { 112 brcmf_dbg(TRACE, "%s feature check failed: %d\n", 113 brcmf_feat_names[id], err); 114 } 115 } 116 117 static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp, 118 enum brcmf_feat_id id, char *name, 119 const void *data, size_t len) 120 { 121 int err; 122 123 err = brcmf_fil_iovar_data_set(ifp, name, data, len); 124 if (err != -BRCMF_FW_UNSUPPORTED) { 125 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]); 126 ifp->drvr->feat_flags |= BIT(id); 127 } else { 128 brcmf_dbg(TRACE, "%s feature check failed: %d\n", 129 brcmf_feat_names[id], err); 130 } 131 } 132 133 static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp) 134 { 135 char caps[256]; 136 enum brcmf_feat_id id; 137 int i; 138 139 brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps)); 140 brcmf_dbg(INFO, "[ %s]\n", caps); 141 142 for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) { 143 if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) { 144 id = brcmf_fwcap_map[i].feature; 145 brcmf_dbg(INFO, "enabling feature: %s\n", 146 brcmf_feat_names[id]); 147 ifp->drvr->feat_flags |= BIT(id); 148 } 149 } 150 } 151 152 void brcmf_feat_attach(struct brcmf_pub *drvr) 153 { 154 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0); 155 struct brcmf_pno_macaddr_le pfn_mac; 156 struct brcmf_gscan_config gscan_cfg; 157 u32 wowl_cap; 158 s32 err; 159 160 brcmf_feat_firmware_capabilities(ifp); 161 memset(&gscan_cfg, 0, sizeof(gscan_cfg)); 162 if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID && 163 drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID) 164 brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN, 165 "pfn_gscan_cfg", 166 &gscan_cfg, sizeof(gscan_cfg)); 167 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn"); 168 if (drvr->bus_if->wowl_supported) 169 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl"); 170 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) { 171 err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap); 172 if (!err) { 173 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND); 174 if (wowl_cap & BRCMF_WOWL_PFN_FOUND) 175 ifp->drvr->feat_flags |= 176 BIT(BRCMF_FEAT_WOWL_ND); 177 if (wowl_cap & BRCMF_WOWL_GTK_FAILURE) 178 ifp->drvr->feat_flags |= 179 BIT(BRCMF_FEAT_WOWL_GTK); 180 } 181 } 182 /* MBSS does not work for 43362 */ 183 if (drvr->bus_if->chip == BRCM_CC_43362_CHIP_ID) 184 ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS); 185 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode"); 186 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable"); 187 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp"); 188 189 pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER; 190 err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac, 191 sizeof(pfn_mac)); 192 if (!err) 193 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC); 194 195 if (drvr->settings->feature_disable) { 196 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n", 197 ifp->drvr->feat_flags, 198 drvr->settings->feature_disable); 199 ifp->drvr->feat_flags &= ~drvr->settings->feature_disable; 200 } 201 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa"); 202 203 /* set chip related quirks */ 204 switch (drvr->bus_if->chip) { 205 case BRCM_CC_43236_CHIP_ID: 206 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH); 207 break; 208 case BRCM_CC_4329_CHIP_ID: 209 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC); 210 break; 211 default: 212 /* no quirks */ 213 break; 214 } 215 216 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read); 217 } 218 219 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id) 220 { 221 return (ifp->drvr->feat_flags & BIT(id)); 222 } 223 224 bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp, 225 enum brcmf_feat_quirk quirk) 226 { 227 return (ifp->drvr->chip_quirks & BIT(quirk)); 228 } 229