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/*
* 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" },
};
#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 */
/**
* 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");
/* 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));
}
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