2 * Copyright (c) 2014 Broadcom Corporation
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.
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.
17 #include <linux/netdevice.h>
18 #include <linux/module.h>
20 #include <brcm_hw_ids.h>
28 /* Module param feature_disable (global for all devices) */
29 static int brcmf_feature_disable;
30 module_param_named(feature_disable, brcmf_feature_disable, int, 0);
31 MODULE_PARM_DESC(feature_disable, "Disable features");
34 * expand feature list to array of feature strings.
36 #define BRCMF_FEAT_DEF(_f) \
38 static const char *brcmf_feat_names[] = {
45 * expand quirk list to array of quirk strings.
47 #define BRCMF_QUIRK_DEF(_q) \
49 static const char * const brcmf_quirk_names[] = {
52 #undef BRCMF_QUIRK_DEF
55 * brcmf_feat_debugfs_read() - expose feature info to debugfs.
57 * @seq: sequence for debugfs entry.
58 * @data: raw data pointer.
60 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
62 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
63 u32 feats = bus_if->drvr->feat_flags;
64 u32 quirks = bus_if->drvr->chip_quirks;
67 seq_printf(seq, "Features: %08x\n", feats);
68 for (id = 0; id < BRCMF_FEAT_LAST; id++)
70 seq_printf(seq, "\t%s\n", brcmf_feat_names[id]);
71 seq_printf(seq, "\nQuirks: %08x\n", quirks);
72 for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++)
74 seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]);
78 static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
85 * brcmf_feat_iovar_int_get() - determine feature through iovar query.
87 * @ifp: interface to query.
91 static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp,
92 enum brcmf_feat_id id, char *name)
97 err = brcmf_fil_iovar_int_get(ifp, name, &data);
99 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
100 ifp->drvr->feat_flags |= BIT(id);
102 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
103 brcmf_feat_names[id], err);
108 * brcmf_feat_iovar_int_set() - determine feature through iovar set.
110 * @ifp: interface to query.
114 static void brcmf_feat_iovar_int_set(struct brcmf_if *ifp,
115 enum brcmf_feat_id id, char *name, u32 val)
119 err = brcmf_fil_iovar_int_set(ifp, name, val);
121 brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
122 ifp->drvr->feat_flags |= BIT(id);
124 brcmf_dbg(TRACE, "%s feature check failed: %d\n",
125 brcmf_feat_names[id], err);
129 void brcmf_feat_attach(struct brcmf_pub *drvr)
131 struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
133 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MCHAN, "mchan");
134 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn");
135 if (drvr->bus_if->wowl_supported)
136 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");
137 if (drvr->bus_if->chip != BRCM_CC_43362_CHIP_ID)
138 brcmf_feat_iovar_int_set(ifp, BRCMF_FEAT_MBSS, "mbss", 0);
139 brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_P2P, "p2p");
141 if (brcmf_feature_disable) {
142 brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n",
143 ifp->drvr->feat_flags, brcmf_feature_disable);
144 ifp->drvr->feat_flags &= ~brcmf_feature_disable;
147 /* set chip related quirks */
148 switch (drvr->bus_if->chip) {
149 case BRCM_CC_43236_CHIP_ID:
150 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH);
152 case BRCM_CC_4329_CHIP_ID:
153 drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC);
160 brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read);
163 bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)
165 return (ifp->drvr->feat_flags & BIT(id));
168 bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp,
169 enum brcmf_feat_quirk quirk)
171 return (ifp->drvr->chip_quirks & BIT(quirk));