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_FLAG, "rtap" },
42 { BRCMF_FEAT_MONITOR_FMT_RADIOTAP, "rtap" },
43 { BRCMF_FEAT_DOT11H, "802.11h" },
44 { BRCMF_FEAT_SAE, "sae" },
45 { BRCMF_FEAT_FWAUTH, "idauth" },
46 };
47
48 #ifdef DEBUG
49 /*
50 * expand quirk list to array of quirk strings.
51 */
52 #define BRCMF_QUIRK_DEF(_q) \
53 #_q,
54 static const char * const brcmf_quirk_names[] = {
55 BRCMF_QUIRK_LIST
56 };
57 #undef BRCMF_QUIRK_DEF
58
59 /**
60 * brcmf_feat_debugfs_read() - expose feature info to debugfs.
61 *
62 * @seq: sequence for debugfs entry.
63 * @data: raw data pointer.
64 */
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)65 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
66 {
67 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
68 u32 feats = bus_if->drvr->feat_flags;
69 u32 quirks = bus_if->drvr->chip_quirks;
70 int id;
71
72 seq_printf(seq, "Features: %08x\n", feats);
73 for (id = 0; id < BRCMF_FEAT_LAST; id++)
74 if (feats & BIT(id))
75 seq_printf(seq, "\t%s\n", brcmf_feat_names[id]);
76 seq_printf(seq, "\nQuirks: %08x\n", quirks);
77 for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++)
78 if (quirks & BIT(id))
79 seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]);
80 return 0;
81 }
82 #else
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)83 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
84 {
85 return 0;
86 }
87 #endif /* DEBUG */
88
89 struct brcmf_feat_fwfeat {
90 const char * const fwid;
91 u32 feat_flags;
92 };
93
94 static const struct brcmf_feat_fwfeat brcmf_feat_fwfeat_map[] = {
95 /* brcmfmac43602-pcie.ap.bin from linux-firmware.git commit ea1178515b88 */
96 { "01-6cb8e269", BIT(BRCMF_FEAT_MONITOR) },
97 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 52442afee990 */
98 { "01-c47a91a4", BIT(BRCMF_FEAT_MONITOR) },
99 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 211de1679a68 */
100 { "01-801fb449", BIT(BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR) },
101 /* brcmfmac4366c-pcie.bin from linux-firmware.git commit 211de1679a68 */
102 { "01-d2cbb8fd", BIT(BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR) },
103 };
104
brcmf_feat_firmware_overrides(struct brcmf_pub * drv)105 static void brcmf_feat_firmware_overrides(struct brcmf_pub *drv)
106 {
107 const struct brcmf_feat_fwfeat *e;
108 u32 feat_flags = 0;
109 int i;
110
111 for (i = 0; i < ARRAY_SIZE(brcmf_feat_fwfeat_map); i++) {
112 e = &brcmf_feat_fwfeat_map[i];
113 if (!strcmp(e->fwid, drv->fwver)) {
114 feat_flags = e->feat_flags;
115 break;
116 }
117 }
118
119 if (!feat_flags)
120 return;
121
122 for (i = 0; i < BRCMF_FEAT_LAST; i++)
123 if (feat_flags & BIT(i))
124 brcmf_dbg(INFO, "enabling firmware feature: %s\n",
125 brcmf_feat_names[i]);
126 drv->feat_flags |= feat_flags;
127 }
128
129 struct brcmf_feat_wlcfeat {
130 u16 min_ver_major;
131 u16 min_ver_minor;
132 u32 feat_flags;
133 };
134
135 static const struct brcmf_feat_wlcfeat brcmf_feat_wlcfeat_map[] = {
136 { 12, 0, BIT(BRCMF_FEAT_PMKID_V2) },
137 { 13, 0, BIT(BRCMF_FEAT_PMKID_V3) },
138 };
139
brcmf_feat_wlc_version_overrides(struct brcmf_pub * drv)140 static void brcmf_feat_wlc_version_overrides(struct brcmf_pub *drv)
141 {
142 struct brcmf_if *ifp = brcmf_get_ifp(drv, 0);
143 const struct brcmf_feat_wlcfeat *e;
144 struct brcmf_wlc_version_le ver;
145 u32 feat_flags = 0;
146 int i, err, major, minor;
147
148 err = brcmf_fil_iovar_data_get(ifp, "wlc_ver", &ver, sizeof(ver));
149 if (err)
150 return;
151
152 major = le16_to_cpu(ver.wlc_ver_major);
153 minor = le16_to_cpu(ver.wlc_ver_minor);
154
155 brcmf_dbg(INFO, "WLC version: %d.%d\n", major, minor);
156
157 for (i = 0; i < ARRAY_SIZE(brcmf_feat_wlcfeat_map); i++) {
158 e = &brcmf_feat_wlcfeat_map[i];
159 if (major > e->min_ver_major ||
160 (major == e->min_ver_major &&
161 minor >= e->min_ver_minor)) {
162 feat_flags |= e->feat_flags;
163 }
164 }
165
166 if (!feat_flags)
167 return;
168
169 for (i = 0; i < BRCMF_FEAT_LAST; i++)
170 if (feat_flags & BIT(i))
171 brcmf_dbg(INFO, "enabling firmware feature: %s\n",
172 brcmf_feat_names[i]);
173 drv->feat_flags |= feat_flags;
174 }
175
176 /**
177 * brcmf_feat_iovar_int_get() - determine feature through iovar query.
178 *
179 * @ifp: interface to query.
180 * @id: feature id.
181 * @name: iovar name.
182 */
brcmf_feat_iovar_int_get(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name)183 static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp,
184 enum brcmf_feat_id id, char *name)
185 {
186 u32 data;
187 int err;
188
189 /* we need to know firmware error */
190 ifp->fwil_fwerr = true;
191
192 err = brcmf_fil_iovar_int_get(ifp, name, &data);
193 if (err != -BRCMF_FW_UNSUPPORTED) {
194 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
195 ifp->drvr->feat_flags |= BIT(id);
196 } else {
197 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
198 brcmf_feat_names[id], err);
199 }
200
201 ifp->fwil_fwerr = false;
202 }
203
brcmf_feat_iovar_data_set(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name,const void * data,size_t len)204 static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp,
205 enum brcmf_feat_id id, char *name,
206 const void *data, size_t len)
207 {
208 int err;
209
210 /* we need to know firmware error */
211 ifp->fwil_fwerr = true;
212
213 err = brcmf_fil_iovar_data_set(ifp, name, data, len);
214 if (err != -BRCMF_FW_UNSUPPORTED) {
215 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
216 ifp->drvr->feat_flags |= BIT(id);
217 } else {
218 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
219 brcmf_feat_names[id], err);
220 }
221
222 ifp->fwil_fwerr = false;
223 }
224
225 #define MAX_CAPS_BUFFER_SIZE 768
brcmf_feat_firmware_capabilities(struct brcmf_if * ifp)226 static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp)
227 {
228 struct brcmf_pub *drvr = ifp->drvr;
229 char caps[MAX_CAPS_BUFFER_SIZE];
230 enum brcmf_feat_id id;
231 int i, err;
232
233 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
234 if (err) {
235 bphy_err(drvr, "could not get firmware cap (%d)\n", err);
236 return;
237 }
238
239 brcmf_dbg(INFO, "[ %s]\n", caps);
240
241 for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) {
242 if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) {
243 id = brcmf_fwcap_map[i].feature;
244 brcmf_dbg(INFO, "enabling feature: %s\n",
245 brcmf_feat_names[id]);
246 ifp->drvr->feat_flags |= BIT(id);
247 }
248 }
249 }
250
251 /**
252 * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs.
253 *
254 * @seq: sequence for debugfs entry.
255 * @data: raw data pointer.
256 */
brcmf_feat_fwcap_debugfs_read(struct seq_file * seq,void * data)257 static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data)
258 {
259 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
260 struct brcmf_pub *drvr = bus_if->drvr;
261 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
262 char caps[MAX_CAPS_BUFFER_SIZE + 1] = { };
263 char *tmp;
264 int err;
265
266 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
267 if (err) {
268 bphy_err(drvr, "could not get firmware cap (%d)\n", err);
269 return err;
270 }
271
272 /* Put every capability in a new line */
273 for (tmp = caps; *tmp; tmp++) {
274 if (*tmp == ' ')
275 *tmp = '\n';
276 }
277
278 /* Usually there is a space at the end of capabilities string */
279 seq_printf(seq, "%s", caps);
280 /* So make sure we don't print two line breaks */
281 if (tmp > caps && *(tmp - 1) != '\n')
282 seq_printf(seq, "\n");
283
284 return 0;
285 }
286
brcmf_feat_attach(struct brcmf_pub * drvr)287 void brcmf_feat_attach(struct brcmf_pub *drvr)
288 {
289 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
290 struct brcmf_pno_macaddr_le pfn_mac;
291 struct brcmf_gscan_config gscan_cfg;
292 u32 wowl_cap;
293 s32 err;
294
295 brcmf_feat_firmware_capabilities(ifp);
296 memset(&gscan_cfg, 0, sizeof(gscan_cfg));
297 if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID &&
298 drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID &&
299 drvr->bus_if->chip != BRCM_CC_43454_CHIP_ID &&
300 drvr->bus_if->chip != CY_CC_43439_CHIP_ID)
301 brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN,
302 "pfn_gscan_cfg",
303 &gscan_cfg, sizeof(gscan_cfg));
304 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn");
305 if (drvr->bus_if->wowl_supported)
306 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");
307 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) {
308 err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap);
309 if (!err) {
310 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND);
311 if (wowl_cap & BRCMF_WOWL_PFN_FOUND)
312 ifp->drvr->feat_flags |=
313 BIT(BRCMF_FEAT_WOWL_ND);
314 if (wowl_cap & BRCMF_WOWL_GTK_FAILURE)
315 ifp->drvr->feat_flags |=
316 BIT(BRCMF_FEAT_WOWL_GTK);
317 }
318 }
319 /* MBSS does not work for all chips */
320 switch (drvr->bus_if->chip) {
321 case BRCM_CC_4330_CHIP_ID:
322 case BRCM_CC_43362_CHIP_ID:
323 ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS);
324 break;
325 default:
326 break;
327 }
328 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode");
329 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable");
330 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp");
331 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_DUMP_OBSS, "dump_obss");
332
333 pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;
334 err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac,
335 sizeof(pfn_mac));
336 if (!err)
337 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC);
338
339 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa");
340 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_SCAN_V2, "scan_ver");
341
342 if (drvr->settings->feature_disable) {
343 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n",
344 ifp->drvr->feat_flags,
345 drvr->settings->feature_disable);
346 ifp->drvr->feat_flags &= ~drvr->settings->feature_disable;
347 }
348
349 brcmf_feat_wlc_version_overrides(drvr);
350 brcmf_feat_firmware_overrides(drvr);
351
352 /* set chip related quirks */
353 switch (drvr->bus_if->chip) {
354 case BRCM_CC_43236_CHIP_ID:
355 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH);
356 break;
357 case BRCM_CC_4329_CHIP_ID:
358 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC);
359 break;
360 default:
361 /* no quirks */
362 break;
363 }
364 }
365
brcmf_feat_debugfs_create(struct brcmf_pub * drvr)366 void brcmf_feat_debugfs_create(struct brcmf_pub *drvr)
367 {
368 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read);
369 brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read);
370 }
371
brcmf_feat_is_enabled(struct brcmf_if * ifp,enum brcmf_feat_id id)372 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)
373 {
374 return (ifp->drvr->feat_flags & BIT(id));
375 }
376
brcmf_feat_is_quirk_enabled(struct brcmf_if * ifp,enum brcmf_feat_quirk quirk)377 bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp,
378 enum brcmf_feat_quirk quirk)
379 {
380 return (ifp->drvr->chip_quirks & BIT(quirk));
381 }
382
