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 "fwvid.h"
17 #include "feature.h"
18 #include "common.h"
19
20 #define BRCMF_FW_UNSUPPORTED 23
21
22 /*
23 * expand feature list to array of feature strings.
24 */
25 #define BRCMF_FEAT_DEF(_f) \
26 #_f,
27 static const char *brcmf_feat_names[] = {
28 BRCMF_FEAT_LIST
29 };
30 #undef BRCMF_FEAT_DEF
31
32 struct brcmf_feat_fwcap {
33 enum brcmf_feat_id feature;
34 const char * const fwcap_id;
35 };
36
37 static 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 DEBUG
50 /*
51 * expand quirk list to array of quirk strings.
52 */
53 #define BRCMF_QUIRK_DEF(_q) \
54 #_q,
55 static const char * const brcmf_quirk_names[] = {
56 BRCMF_QUIRK_LIST
57 };
58 #undef BRCMF_QUIRK_DEF
59
60 /**
61 * brcmf_feat_debugfs_read() - expose feature info to debugfs.
62 *
63 * @seq: sequence for debugfs entry.
64 * @data: raw data pointer.
65 */
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)66 static 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 #else
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)84 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
85 {
86 return 0;
87 }
88 #endif /* DEBUG */
89
90 struct brcmf_feat_fwfeat {
91 const char * const fwid;
92 u32 feat_flags;
93 };
94
95 static 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
brcmf_feat_firmware_overrides(struct brcmf_pub * drv)106 static 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
130 struct brcmf_feat_wlcfeat {
131 u16 min_ver_major;
132 u16 min_ver_minor;
133 u32 feat_flags;
134 };
135
136 static 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
brcmf_feat_wlc_version_overrides(struct brcmf_pub * drv)141 static 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 */
brcmf_feat_iovar_int_get(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name)184 static 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
brcmf_feat_iovar_data_set(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name,const void * data,size_t len)205 static 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 768
brcmf_feat_firmware_capabilities(struct brcmf_if * ifp)227 static 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 */
brcmf_feat_fwcap_debugfs_read(struct seq_file * seq,void * data)258 static 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
brcmf_feat_attach(struct brcmf_pub * drvr)288 void 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_fwvid_feat_attach(ifp);
344
345 if (drvr->settings->feature_disable) {
346 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n",
347 ifp->drvr->feat_flags,
348 drvr->settings->feature_disable);
349 ifp->drvr->feat_flags &= ~drvr->settings->feature_disable;
350 }
351
352 brcmf_feat_wlc_version_overrides(drvr);
353 brcmf_feat_firmware_overrides(drvr);
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
brcmf_feat_debugfs_create(struct brcmf_pub * drvr)369 void 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
brcmf_feat_is_enabled(struct brcmf_if * ifp,enum brcmf_feat_id id)375 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)
376 {
377 return (ifp->drvr->feat_flags & BIT(id));
378 }
379
brcmf_feat_is_quirk_enabled(struct brcmf_if * ifp,enum brcmf_feat_quirk quirk)380 bool 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