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
19 #include <brcm_hw_ids.h>
20 #include "core.h"
21 #include "bus.h"
22 #include "debug.h"
23 #include "fwil.h"
24 #include "feature.h"
25
26 /*
27 * expand feature list to array of feature strings.
28 */
29 #define BRCMF_FEAT_DEF(_f) \
30 #_f,
31 static const char *brcmf_feat_names[] = {
32 BRCMF_FEAT_LIST
33 };
34 #undef BRCMF_FEAT_DEF
35
36 #ifdef DEBUG
37 /*
38 * expand quirk list to array of quirk strings.
39 */
40 #define BRCMF_QUIRK_DEF(_q) \
41 #_q,
42 static const char * const brcmf_quirk_names[] = {
43 BRCMF_QUIRK_LIST
44 };
45 #undef BRCMF_QUIRK_DEF
46
47 /**
48 * brcmf_feat_debugfs_read() - expose feature info to debugfs.
49 *
50 * @seq: sequence for debugfs entry.
51 * @data: raw data pointer.
52 */
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)53 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
54 {
55 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
56 u32 feats = bus_if->drvr->feat_flags;
57 u32 quirks = bus_if->drvr->chip_quirks;
58 int id;
59
60 seq_printf(seq, "Features: %08x\n", feats);
61 for (id = 0; id < BRCMF_FEAT_LAST; id++)
62 if (feats & BIT(id))
63 seq_printf(seq, "\t%s\n", brcmf_feat_names[id]);
64 seq_printf(seq, "\nQuirks: %08x\n", quirks);
65 for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++)
66 if (quirks & BIT(id))
67 seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]);
68 return 0;
69 }
70 #else
brcmf_feat_debugfs_read(struct seq_file * seq,void * data)71 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
72 {
73 return 0;
74 }
75 #endif /* DEBUG */
76
77 /**
78 * brcmf_feat_iovar_int_get() - determine feature through iovar query.
79 *
80 * @ifp: interface to query.
81 * @id: feature id.
82 * @name: iovar name.
83 */
brcmf_feat_iovar_int_get(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name)84 static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp,
85 enum brcmf_feat_id id, char *name)
86 {
87 u32 data;
88 int err;
89
90 err = brcmf_fil_iovar_int_get(ifp, name, &data);
91 if (err == 0) {
92 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
93 ifp->drvr->feat_flags |= BIT(id);
94 } else {
95 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
96 brcmf_feat_names[id], err);
97 }
98 }
99
100 /**
101 * brcmf_feat_iovar_int_set() - determine feature through iovar set.
102 *
103 * @ifp: interface to query.
104 * @id: feature id.
105 * @name: iovar name.
106 */
brcmf_feat_iovar_int_set(struct brcmf_if * ifp,enum brcmf_feat_id id,char * name,u32 val)107 static void brcmf_feat_iovar_int_set(struct brcmf_if *ifp,
108 enum brcmf_feat_id id, char *name, u32 val)
109 {
110 int err;
111
112 err = brcmf_fil_iovar_int_set(ifp, name, val);
113 if (err == 0) {
114 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
115 ifp->drvr->feat_flags |= BIT(id);
116 } else {
117 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
118 brcmf_feat_names[id], err);
119 }
120 }
121
brcmf_feat_attach(struct brcmf_pub * drvr)122 void brcmf_feat_attach(struct brcmf_pub *drvr)
123 {
124 struct brcmf_if *ifp = drvr->iflist[0];
125
126 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MCHAN, "mchan");
127 if (drvr->bus_if->wowl_supported)
128 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");
129 if (drvr->bus_if->chip != BRCM_CC_43362_CHIP_ID)
130 brcmf_feat_iovar_int_set(ifp, BRCMF_FEAT_MBSS, "mbss", 0);
131
132 /* set chip related quirks */
133 switch (drvr->bus_if->chip) {
134 case BRCM_CC_43236_CHIP_ID:
135 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH);
136 break;
137 case BRCM_CC_4329_CHIP_ID:
138 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC);
139 break;
140 default:
141 /* no quirks */
142 break;
143 }
144
145 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read);
146 }
147
brcmf_feat_is_enabled(struct brcmf_if * ifp,enum brcmf_feat_id id)148 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)
149 {
150 return (ifp->drvr->feat_flags & BIT(id));
151 }
152
brcmf_feat_is_quirk_enabled(struct brcmf_if * ifp,enum brcmf_feat_quirk quirk)153 bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp,
154 enum brcmf_feat_quirk quirk)
155 {
156 return (ifp->drvr->chip_quirks & BIT(quirk));
157 }
158