summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/broadcom/brcm80211/brcmfmac/feature.c
blob: 8347da632a5b0de85f9a68d9eedfd0436d2da915 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
/*
 * Copyright (c) 2014 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/netdevice.h>
#include <linux/module.h>

#include <brcm_hw_ids.h>
#include <brcmu_wifi.h>
#include "core.h"
#include "bus.h"
#include "debug.h"
#include "fwil.h"
#include "fwil_types.h"
#include "feature.h"
#include "common.h"

#define BRCMF_FW_UNSUPPORTED	23

/*
 * expand feature list to array of feature strings.
 */
#define BRCMF_FEAT_DEF(_f) \
	#_f,
static const char *brcmf_feat_names[] = {
	BRCMF_FEAT_LIST
};
#undef BRCMF_FEAT_DEF

struct brcmf_feat_fwcap {
	enum brcmf_feat_id feature;
	const char * const fwcap_id;
};

static const struct brcmf_feat_fwcap brcmf_fwcap_map[] = {
	{ BRCMF_FEAT_MBSS, "mbss" },
	{ BRCMF_FEAT_MCHAN, "mchan" },
	{ BRCMF_FEAT_P2P, "p2p" },
	{ BRCMF_FEAT_MONITOR, "monitor" },
	{ BRCMF_FEAT_MONITOR_FMT_RADIOTAP, "rtap" },
};

#ifdef DEBUG
/*
 * expand quirk list to array of quirk strings.
 */
#define BRCMF_QUIRK_DEF(_q) \
	#_q,
static const char * const brcmf_quirk_names[] = {
	BRCMF_QUIRK_LIST
};
#undef BRCMF_QUIRK_DEF

/**
 * brcmf_feat_debugfs_read() - expose feature info to debugfs.
 *
 * @seq: sequence for debugfs entry.
 * @data: raw data pointer.
 */
static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
{
	struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
	u32 feats = bus_if->drvr->feat_flags;
	u32 quirks = bus_if->drvr->chip_quirks;
	int id;

	seq_printf(seq, "Features: %08x\n", feats);
	for (id = 0; id < BRCMF_FEAT_LAST; id++)
		if (feats & BIT(id))
			seq_printf(seq, "\t%s\n", brcmf_feat_names[id]);
	seq_printf(seq, "\nQuirks:   %08x\n", quirks);
	for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++)
		if (quirks & BIT(id))
			seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]);
	return 0;
}
#else
static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
{
	return 0;
}
#endif /* DEBUG */

struct brcmf_feat_fwfeat {
	const char * const fwid;
	u32 feat_flags;
};

static const struct brcmf_feat_fwfeat brcmf_feat_fwfeat_map[] = {
	/* brcmfmac43602-pcie.ap.bin from linux-firmware.git commit ea1178515b88 */
	{ "01-6cb8e269", BIT(BRCMF_FEAT_MONITOR) },
	/* brcmfmac4366b-pcie.bin from linux-firmware.git commit 52442afee990 */
	{ "01-c47a91a4", BIT(BRCMF_FEAT_MONITOR) },
};

static void brcmf_feat_firmware_overrides(struct brcmf_pub *drv)
{
	const struct brcmf_feat_fwfeat *e;
	u32 feat_flags = 0;
	int i;

	for (i = 0; i < ARRAY_SIZE(brcmf_feat_fwfeat_map); i++) {
		e = &brcmf_feat_fwfeat_map[i];
		if (!strcmp(e->fwid, drv->fwver)) {
			feat_flags = e->feat_flags;
			break;
		}
	}

	if (!feat_flags)
		return;

	for (i = 0; i < BRCMF_FEAT_LAST; i++)
		if (feat_flags & BIT(i))
			brcmf_dbg(INFO, "enabling firmware feature: %s\n",
				  brcmf_feat_names[i]);
	drv->feat_flags |= feat_flags;
}

/**
 * brcmf_feat_iovar_int_get() - determine feature through iovar query.
 *
 * @ifp: interface to query.
 * @id: feature id.
 * @name: iovar name.
 */
static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp,
				     enum brcmf_feat_id id, char *name)
{
	u32 data;
	int err;

	/* we need to know firmware error */
	ifp->fwil_fwerr = true;

	err = brcmf_fil_iovar_int_get(ifp, name, &data);
	if (err == 0) {
		brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
		ifp->drvr->feat_flags |= BIT(id);
	} else {
		brcmf_dbg(TRACE, "%s feature check failed: %d\n",
			  brcmf_feat_names[id], err);
	}

	ifp->fwil_fwerr = false;
}

static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp,
				      enum brcmf_feat_id id, char *name,
				      const void *data, size_t len)
{
	int err;

	/* we need to know firmware error */
	ifp->fwil_fwerr = true;

	err = brcmf_fil_iovar_data_set(ifp, name, data, len);
	if (err != -BRCMF_FW_UNSUPPORTED) {
		brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
		ifp->drvr->feat_flags |= BIT(id);
	} else {
		brcmf_dbg(TRACE, "%s feature check failed: %d\n",
			  brcmf_feat_names[id], err);
	}

	ifp->fwil_fwerr = false;
}

#define MAX_CAPS_BUFFER_SIZE	512
static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp)
{
	char caps[MAX_CAPS_BUFFER_SIZE];
	enum brcmf_feat_id id;
	int i, err;

	err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
	if (err) {
		brcmf_err("could not get firmware cap (%d)\n", err);
		return;
	}

	brcmf_dbg(INFO, "[ %s]\n", caps);

	for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) {
		if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) {
			id = brcmf_fwcap_map[i].feature;
			brcmf_dbg(INFO, "enabling feature: %s\n",
				  brcmf_feat_names[id]);
			ifp->drvr->feat_flags |= BIT(id);
		}
	}
}

/**
 * brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs.
 *
 * @seq: sequence for debugfs entry.
 * @data: raw data pointer.
 */
static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data)
{
	struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
	struct brcmf_if *ifp = brcmf_get_ifp(bus_if->drvr, 0);
	char caps[MAX_CAPS_BUFFER_SIZE + 1] = { };
	char *tmp;
	int err;

	err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
	if (err) {
		brcmf_err("could not get firmware cap (%d)\n", err);
		return err;
	}

	/* Put every capability in a new line */
	for (tmp = caps; *tmp; tmp++) {
		if (*tmp == ' ')
			*tmp = '\n';
	}

	/* Usually there is a space at the end of capabilities string */
	seq_printf(seq, "%s", caps);
	/* So make sure we don't print two line breaks */
	if (tmp > caps && *(tmp - 1) != '\n')
		seq_printf(seq, "\n");

	return 0;
}

void brcmf_feat_attach(struct brcmf_pub *drvr)
{
	struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
	struct brcmf_pno_macaddr_le pfn_mac;
	struct brcmf_gscan_config gscan_cfg;
	u32 wowl_cap;
	s32 err;

	brcmf_feat_firmware_capabilities(ifp);
	memset(&gscan_cfg, 0, sizeof(gscan_cfg));
	if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID &&
	    drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID)
		brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN,
					  "pfn_gscan_cfg",
					  &gscan_cfg, sizeof(gscan_cfg));
	brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn");
	if (drvr->bus_if->wowl_supported)
		brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");
	if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) {
		err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap);
		if (!err) {
			ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND);
			if (wowl_cap & BRCMF_WOWL_PFN_FOUND)
				ifp->drvr->feat_flags |=
					BIT(BRCMF_FEAT_WOWL_ND);
			if (wowl_cap & BRCMF_WOWL_GTK_FAILURE)
				ifp->drvr->feat_flags |=
					BIT(BRCMF_FEAT_WOWL_GTK);
		}
	}
	/* MBSS does not work for 43362 */
	if (drvr->bus_if->chip == BRCM_CC_43362_CHIP_ID)
		ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS);
	brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode");
	brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable");
	brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp");

	pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;
	err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac,
				       sizeof(pfn_mac));
	if (!err)
		ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC);

	if (drvr->settings->feature_disable) {
		brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n",
			  ifp->drvr->feat_flags,
			  drvr->settings->feature_disable);
		ifp->drvr->feat_flags &= ~drvr->settings->feature_disable;
	}
	brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa");

	brcmf_feat_firmware_overrides(drvr);

	/* set chip related quirks */
	switch (drvr->bus_if->chip) {
	case BRCM_CC_43236_CHIP_ID:
		drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH);
		break;
	case BRCM_CC_4329_CHIP_ID:
		drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC);
		break;
	default:
		/* no quirks */
		break;
	}
}

void brcmf_feat_debugfs_create(struct brcmf_pub *drvr)
{
	brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read);
	brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read);
}

bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)
{
	return (ifp->drvr->feat_flags & BIT(id));
}

bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp,
				 enum brcmf_feat_quirk quirk)
{
	return (ifp->drvr->chip_quirks & BIT(quirk));
}
OpenPOWER on IntegriCloud