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 */
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)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
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)90 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
91 {
92 return 0;
93 }
94 #endif /* DEBUG */
95
96 struct brcmf_feat_fwfeat {
97 const char * const fwid;
98 u32 feat_flags;
99 };
100
101 static const struct brcmf_feat_fwfeat brcmf_feat_fwfeat_map[] = {
102 /* brcmfmac43602-pcie.ap.bin from linux-firmware.git commit ea1178515b88 */
103 { "01-6cb8e269", BIT(BRCMF_FEAT_MONITOR) },
104 /* brcmfmac4366b-pcie.bin from linux-firmware.git commit 52442afee990 */
105 { "01-c47a91a4", BIT(BRCMF_FEAT_MONITOR) },
106 };
107
brcmf_feat_firmware_overrides(struct brcmf_pub * drv)108 static void brcmf_feat_firmware_overrides(struct brcmf_pub *drv)
109 {
110 const struct brcmf_feat_fwfeat *e;
111 u32 feat_flags = 0;
112 int i;
113
114 for (i = 0; i < ARRAY_SIZE(brcmf_feat_fwfeat_map); i++) {
115 e = &brcmf_feat_fwfeat_map[i];
116 if (!strcmp(e->fwid, drv->fwver)) {
117 feat_flags = e->feat_flags;
118 break;
119 }
120 }
121
122 if (!feat_flags)
123 return;
124
125 for (i = 0; i < BRCMF_FEAT_LAST; i++)
126 if (feat_flags & BIT(i))
127 brcmf_dbg(INFO, "enabling firmware feature: %s\n",
128 brcmf_feat_names[i]);
129 drv->feat_flags |= feat_flags;
130 }
131
132 /**
133 * brcmf_feat_iovar_int_get() - determine feature through iovar query.
134 *
135 * @ifp: interface to query.
136 * @id: feature id.
137 * @name: iovar name.
138 */
brcmf_feat_iovar_int_get(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name)139 static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp,
140 enum brcmf_feat_id id, char *name)
141 {
142 u32 data;
143 int err;
144
145 /* we need to know firmware error */
146 ifp->fwil_fwerr = true;
147
148 err = brcmf_fil_iovar_int_get(ifp, name, &data);
149 if (err == 0) {
150 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
151 ifp->drvr->feat_flags |= BIT(id);
152 } else {
153 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
154 brcmf_feat_names[id], err);
155 }
156
157 ifp->fwil_fwerr = false;
158 }
159
brcmf_feat_iovar_data_set(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name,const void * data,size_t len)160 static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp,
161 enum brcmf_feat_id id, char *name,
162 const void *data, size_t len)
163 {
164 int err;
165
166 /* we need to know firmware error */
167 ifp->fwil_fwerr = true;
168
169 err = brcmf_fil_iovar_data_set(ifp, name, data, len);
170 if (err != -BRCMF_FW_UNSUPPORTED) {
171 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
172 ifp->drvr->feat_flags |= BIT(id);
173 } else {
174 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
175 brcmf_feat_names[id], err);
176 }
177
178 ifp->fwil_fwerr = false;
179 }
180
181 #define MAX_CAPS_BUFFER_SIZE 512
brcmf_feat_firmware_capabilities(struct brcmf_if * ifp)182 static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp)
183 {
184 char caps[MAX_CAPS_BUFFER_SIZE];
185 enum brcmf_feat_id id;
186 int i, err;
187
188 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
189 if (err) {
190 brcmf_err("could not get firmware cap (%d)\n", err);
191 return;
192 }
193
194 brcmf_dbg(INFO, "[ %s]\n", caps);
195
196 for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) {
197 if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) {
198 id = brcmf_fwcap_map[i].feature;
199 brcmf_dbg(INFO, "enabling feature: %s\n",
200 brcmf_feat_names[id]);
201 ifp->drvr->feat_flags |= BIT(id);
202 }
203 }
204 }
205
206 /**
207 * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs.
208 *
209 * @seq: sequence for debugfs entry.
210 * @data: raw data pointer.
211 */
brcmf_feat_fwcap_debugfs_read(struct seq_file * seq,void * data)212 static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data)
213 {
214 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
215 struct brcmf_if *ifp = brcmf_get_ifp(bus_if->drvr, 0);
216 char caps[MAX_CAPS_BUFFER_SIZE + 1] = { };
217 char *tmp;
218 int err;
219
220 err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
221 if (err) {
222 brcmf_err("could not get firmware cap (%d)\n", err);
223 return err;
224 }
225
226 /* Put every capability in a new line */
227 for (tmp = caps; *tmp; tmp++) {
228 if (*tmp == ' ')
229 *tmp = '\n';
230 }
231
232 /* Usually there is a space at the end of capabilities string */
233 seq_printf(seq, "%s", caps);
234 /* So make sure we don't print two line breaks */
235 if (tmp > caps && *(tmp - 1) != '\n')
236 seq_printf(seq, "\n");
237
238 return 0;
239 }
240
brcmf_feat_attach(struct brcmf_pub * drvr)241 void brcmf_feat_attach(struct brcmf_pub *drvr)
242 {
243 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
244 struct brcmf_pno_macaddr_le pfn_mac;
245 struct brcmf_gscan_config gscan_cfg;
246 u32 wowl_cap;
247 s32 err;
248
249 brcmf_feat_firmware_capabilities(ifp);
250 memset(&gscan_cfg, 0, sizeof(gscan_cfg));
251 if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID &&
252 drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID)
253 brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN,
254 "pfn_gscan_cfg",
255 &gscan_cfg, sizeof(gscan_cfg));
256 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn");
257 if (drvr->bus_if->wowl_supported)
258 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");
259 if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) {
260 err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap);
261 if (!err) {
262 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND);
263 if (wowl_cap & BRCMF_WOWL_PFN_FOUND)
264 ifp->drvr->feat_flags |=
265 BIT(BRCMF_FEAT_WOWL_ND);
266 if (wowl_cap & BRCMF_WOWL_GTK_FAILURE)
267 ifp->drvr->feat_flags |=
268 BIT(BRCMF_FEAT_WOWL_GTK);
269 }
270 }
271 /* MBSS does not work for 43362 */
272 if (drvr->bus_if->chip == BRCM_CC_43362_CHIP_ID)
273 ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS);
274 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode");
275 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable");
276 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp");
277
278 pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;
279 err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac,
280 sizeof(pfn_mac));
281 if (!err)
282 ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC);
283
284 if (drvr->settings->feature_disable) {
285 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n",
286 ifp->drvr->feat_flags,
287 drvr->settings->feature_disable);
288 ifp->drvr->feat_flags &= ~drvr->settings->feature_disable;
289 }
290 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa");
291
292 brcmf_feat_firmware_overrides(drvr);
293
294 /* set chip related quirks */
295 switch (drvr->bus_if->chip) {
296 case BRCM_CC_43236_CHIP_ID:
297 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH);
298 break;
299 case BRCM_CC_4329_CHIP_ID:
300 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC);
301 break;
302 default:
303 /* no quirks */
304 break;
305 }
306 }
307
brcmf_feat_debugfs_create(struct brcmf_pub * drvr)308 void brcmf_feat_debugfs_create(struct brcmf_pub *drvr)
309 {
310 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read);
311 brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read);
312 }
313
brcmf_feat_is_enabled(struct brcmf_if * ifp,enum brcmf_feat_id id)314 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)
315 {
316 return (ifp->drvr->feat_flags & BIT(id));
317 }
318
brcmf_feat_is_quirk_enabled(struct brcmf_if * ifp,enum brcmf_feat_quirk quirk)319 bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp,
320 enum brcmf_feat_quirk quirk)
321 {
322 return (ifp->drvr->chip_quirks & BIT(quirk));
323 }
324
