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 { BRCMF_FEAT_SAE_EXT, "sae_ext" },
48 };
49
50 #ifdef DEBUG
51 /*
52 * expand quirk list to array of quirk strings.
53 */
54 #define BRCMF_QUIRK_DEF(_q) \
55 #_q,
56 static const char * const brcmf_quirk_names[] = {
57 BRCMF_QUIRK_LIST
58 };
59 #undef BRCMF_QUIRK_DEF
60
61 /**
62 * brcmf_feat_debugfs_read() - expose feature info to debugfs.
63 *
64 * @seq: sequence for debugfs entry.
65 * @data: raw data pointer.
66 */
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)67 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
68 {
69 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
70 u32 feats = bus_if->drvr->feat_flags;
71 u32 quirks = bus_if->drvr->chip_quirks;
72 int id;
73
74 seq_printf(seq, "Features: %08x\n", feats);
75 for (id = 0; id < BRCMF_FEAT_LAST; id++)
76 if (feats & BIT(id))
77 seq_printf(seq, "\t%s\n", brcmf_feat_names[id]);
78 seq_printf(seq, "\nQuirks: %08x\n", quirks);
79 for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++)
80 if (quirks & BIT(id))
81 seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]);
82 return 0;
83 }
84 #else
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)85 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
86 {
87 return 0;
88 }
89 #endif /* DEBUG */
90
91 struct brcmf_feat_fwfeat {
92 const char * const fwid;
93 u32 feat_flags;
94 };
95
96 static const struct brcmf_feat_fwfeat brcmf_feat_fwfeat_map[] = {
97 /* brcmfmac43602-pcie.ap.bin from linux-firmware.git commit ea1178515b88 */
98 { "01-6cb8e269", BIT(BRCMF_FEAT_MONITOR) },
99 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 52442afee990 */
100 { "01-c47a91a4", BIT(BRCMF_FEAT_MONITOR) },
101 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 211de1679a68 */
102 { "01-801fb449", BIT(BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR) },
103 /* brcmfmac4366c-pcie.bin from linux-firmware.git commit 211de1679a68 */
104 { "01-d2cbb8fd", BIT(BRCMF_FEAT_MONITOR_FMT_HW_RX_HDR) },
105 };
106
brcmf_feat_firmware_overrides(struct brcmf_pub * drv)107 static void brcmf_feat_firmware_overrides(struct brcmf_pub *drv)
108 {
109 const struct brcmf_feat_fwfeat *e;
110 u32 feat_flags = 0;
111 int i;
112
113 for (i = 0; i < ARRAY_SIZE(brcmf_feat_fwfeat_map); i++) {
114 e = &brcmf_feat_fwfeat_map[i];
115 if (!strcmp(e->fwid, drv->fwver)) {
116 feat_flags = e->feat_flags;
117 break;
118 }
119 }
120
121 if (!feat_flags)
122 return;
123
124 for (i = 0; i < BRCMF_FEAT_LAST; i++)
125 if (feat_flags & BIT(i))
126 brcmf_dbg(INFO, "enabling firmware feature: %s\n",
127 brcmf_feat_names[i]);
128 drv->feat_flags |= feat_flags;
129 }
130
131 struct brcmf_feat_wlcfeat {
132 u16 min_ver_major;
133 u16 min_ver_minor;
134 u32 feat_flags;
135 };
136
137 static const struct brcmf_feat_wlcfeat brcmf_feat_wlcfeat_map[] = {
138 { 12, 0, BIT(BRCMF_FEAT_PMKID_V2) },
139 { 13, 0, BIT(BRCMF_FEAT_PMKID_V3) },
140 };
141
brcmf_feat_wlc_version_overrides(struct brcmf_pub * drv)142 static void brcmf_feat_wlc_version_overrides(struct brcmf_pub *drv)
143 {
144 struct brcmf_if *ifp = brcmf_get_ifp(drv, 0);
145 const struct brcmf_feat_wlcfeat *e;
146 struct brcmf_wlc_version_le ver;
147 u32 feat_flags = 0;
148 int i, err, major, minor;
149
150 err = brcmf_fil_iovar_data_get(ifp, "wlc_ver", &ver, sizeof(ver));
151 if (err)
152 return;
153
154 major = le16_to_cpu(ver.wlc_ver_major);
155 minor = le16_to_cpu(ver.wlc_ver_minor);
156
157 brcmf_dbg(INFO, "WLC version: %d.%d\n", major, minor);
158
159 for (i = 0; i < ARRAY_SIZE(brcmf_feat_wlcfeat_map); i++) {
160 e = &brcmf_feat_wlcfeat_map[i];
161 if (major > e->min_ver_major ||
162 (major == e->min_ver_major &&
163 minor >= e->min_ver_minor)) {
164 feat_flags |= e->feat_flags;
165 }
166 }
167
168 if (!feat_flags)
169 return;
170
171 for (i = 0; i < BRCMF_FEAT_LAST; i++)
172 if (feat_flags & BIT(i))
173 brcmf_dbg(INFO, "enabling firmware feature: %s\n",
174 brcmf_feat_names[i]);
175 drv->feat_flags |= feat_flags;
176 }
177
178 /**
179 * brcmf_feat_iovar_int_get() - determine feature through iovar query.
180 *
181 * @ifp: interface to query.
182 * @id: feature id.
183 * @name: iovar name.
184 */
brcmf_feat_iovar_int_get(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name)185 static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp,
186 enum brcmf_feat_id id, char *name)
187 {
188 u32 data;
189 int err;
190
191 /* we need to know firmware error */
192 ifp->fwil_fwerr = true;
193
194 err = brcmf_fil_iovar_int_get(ifp, name, &data);
195 if (err != -BRCMF_FW_UNSUPPORTED) {
196 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
197 ifp->drvr->feat_flags |= BIT(id);
198 } else {
199 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
200 brcmf_feat_names[id], err);
201 }
202
203 ifp->fwil_fwerr = false;
204 }
205
brcmf_feat_iovar_data_set(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name,const void * data,size_t len)206 static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp,
207 enum brcmf_feat_id id, char *name,
208 const void *data, size_t len)
209 {
210 int err;
211
212 /* we need to know firmware error */
213 ifp->fwil_fwerr = true;
214
215 err = brcmf_fil_iovar_data_set(ifp, name, data, len);
216 if (err != -BRCMF_FW_UNSUPPORTED) {
217 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
218 ifp->drvr->feat_flags |= BIT(id);
219 } else {
220 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
221 brcmf_feat_names[id], err);
222 }
223
224 ifp->fwil_fwerr = false;
225 }
226
227 #define MAX_CAPS_BUFFER_SIZE 768
brcmf_feat_firmware_capabilities(struct brcmf_if * ifp)228 static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp)
229 {
230 struct brcmf_pub *drvr = ifp->drvr;
231 char caps[MAX_CAPS_BUFFER_SIZE];
232 enum brcmf_feat_id id;
233 int i, err;
234
235 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
236 if (err) {
237 bphy_err(drvr, "could not get firmware cap (%d)\n", err);
238 return;
239 }
240
241 brcmf_dbg(INFO, "[ %s]\n", caps);
242
243 for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) {
244 if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) {
245 id = brcmf_fwcap_map[i].feature;
246 brcmf_dbg(INFO, "enabling feature: %s\n",
247 brcmf_feat_names[id]);
248 ifp->drvr->feat_flags |= BIT(id);
249 }
250 }
251 }
252
253 /**
254 * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs.
255 *
256 * @seq: sequence for debugfs entry.
257 * @data: raw data pointer.
258 */
brcmf_feat_fwcap_debugfs_read(struct seq_file * seq,void * data)259 static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data)
260 {
261 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
262 struct brcmf_pub *drvr = bus_if->drvr;
263 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
264 char caps[MAX_CAPS_BUFFER_SIZE + 1] = { };
265 char *tmp;
266 int err;
267
268 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
269 if (err) {
270 bphy_err(drvr, "could not get firmware cap (%d)\n", err);
271 return err;
272 }
273
274 /* Put every capability in a new line */
275 for (tmp = caps; *tmp; tmp++) {
276 if (*tmp == ' ')
277 *tmp = '\n';
278 }
279
280 /* Usually there is a space at the end of capabilities string */
281 seq_printf(seq, "%s", caps);
282 /* So make sure we don't print two line breaks */
283 if (tmp > caps && *(tmp - 1) != '\n')
284 seq_printf(seq, "\n");
285
286 return 0;
287 }
288
brcmf_feat_attach(struct brcmf_pub * drvr)289 void brcmf_feat_attach(struct brcmf_pub *drvr)
290 {
291 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
292 struct brcmf_pno_macaddr_le pfn_mac;
293 struct brcmf_gscan_config gscan_cfg;
294 u32 wowl_cap;
295 s32 err;
296
297 brcmf_feat_firmware_capabilities(ifp);
298 memset(&gscan_cfg, 0, sizeof(gscan_cfg));
299 if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID &&
300 drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID &&
301 drvr->bus_if->chip != BRCM_CC_43454_CHIP_ID &&
302 drvr->bus_if->chip != CY_CC_43439_CHIP_ID)
303 brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN,
304 "pfn_gscan_cfg",
305 &gscan_cfg, sizeof(gscan_cfg));
306 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn");
307 if (drvr->bus_if->wowl_supported)
308 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");
309 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) {
310 err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap);
311 if (!err) {
312 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND);
313 if (wowl_cap & BRCMF_WOWL_PFN_FOUND)
314 ifp->drvr->feat_flags |=
315 BIT(BRCMF_FEAT_WOWL_ND);
316 if (wowl_cap & BRCMF_WOWL_GTK_FAILURE)
317 ifp->drvr->feat_flags |=
318 BIT(BRCMF_FEAT_WOWL_GTK);
319 }
320 }
321 /* MBSS does not work for all chips */
322 switch (drvr->bus_if->chip) {
323 case BRCM_CC_4330_CHIP_ID:
324 case BRCM_CC_43362_CHIP_ID:
325 ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS);
326 break;
327 default:
328 break;
329 }
330 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode");
331 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable");
332 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp");
333 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_DUMP_OBSS, "dump_obss");
334
335 pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;
336 err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac,
337 sizeof(pfn_mac));
338 if (!err)
339 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC);
340
341 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa");
342 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_SCAN_V2, "scan_ver");
343
344 brcmf_feat_wlc_version_overrides(drvr);
345 brcmf_feat_firmware_overrides(drvr);
346
347 brcmf_fwvid_feat_attach(ifp);
348
349 if (drvr->settings->feature_disable) {
350 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n",
351 ifp->drvr->feat_flags,
352 drvr->settings->feature_disable);
353 ifp->drvr->feat_flags &= ~drvr->settings->feature_disable;
354 }
355
356 /* set chip related quirks */
357 switch (drvr->bus_if->chip) {
358 case BRCM_CC_43236_CHIP_ID:
359 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH);
360 break;
361 case BRCM_CC_4329_CHIP_ID:
362 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC);
363 break;
364 default:
365 /* no quirks */
366 break;
367 }
368 }
369
brcmf_feat_debugfs_create(struct brcmf_pub * drvr)370 void brcmf_feat_debugfs_create(struct brcmf_pub *drvr)
371 {
372 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read);
373 brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read);
374 }
375
brcmf_feat_is_enabled(struct brcmf_if * ifp,enum brcmf_feat_id id)376 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)
377 {
378 return (ifp->drvr->feat_flags & BIT(id));
379 }
380
brcmf_feat_is_quirk_enabled(struct brcmf_if * ifp,enum brcmf_feat_quirk quirk)381 bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp,
382 enum brcmf_feat_quirk quirk)
383 {
384 return (ifp->drvr->chip_quirks & BIT(quirk));
385 }
386