325 lines
8.6 KiB
C
325 lines
8.6 KiB
C
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/*
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* Copyright (c) 2014 Broadcom Corporation
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/netdevice.h>
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#include <linux/module.h>
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#include <brcm_hw_ids.h>
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#include <brcmu_wifi.h>
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#include "core.h"
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#include "bus.h"
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#include "debug.h"
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#include "fwil.h"
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#include "fwil_types.h"
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#include "feature.h"
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#include "common.h"
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#define BRCMF_FW_UNSUPPORTED 23
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/*
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* expand feature list to array of feature strings.
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*/
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#define BRCMF_FEAT_DEF(_f) \
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#_f,
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static const char *brcmf_feat_names[] = {
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BRCMF_FEAT_LIST
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};
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#undef BRCMF_FEAT_DEF
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struct brcmf_feat_fwcap {
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enum brcmf_feat_id feature;
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const char * const fwcap_id;
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};
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static const struct brcmf_feat_fwcap brcmf_fwcap_map[] = {
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{ BRCMF_FEAT_MBSS, "mbss" },
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{ BRCMF_FEAT_MCHAN, "mchan" },
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{ BRCMF_FEAT_P2P, "p2p" },
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{ BRCMF_FEAT_MONITOR, "monitor" },
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{ BRCMF_FEAT_MONITOR_FMT_RADIOTAP, "rtap" },
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};
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#ifdef DEBUG
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/*
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* expand quirk list to array of quirk strings.
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*/
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#define BRCMF_QUIRK_DEF(_q) \
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#_q,
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static const char * const brcmf_quirk_names[] = {
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BRCMF_QUIRK_LIST
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};
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#undef BRCMF_QUIRK_DEF
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/**
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* brcmf_feat_debugfs_read() - expose feature info to debugfs.
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*
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* @seq: sequence for debugfs entry.
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* @data: raw data pointer.
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*/
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static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
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{
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struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
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u32 feats = bus_if->drvr->feat_flags;
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u32 quirks = bus_if->drvr->chip_quirks;
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int id;
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seq_printf(seq, "Features: %08x\n", feats);
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for (id = 0; id < BRCMF_FEAT_LAST; id++)
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if (feats & BIT(id))
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seq_printf(seq, "\t%s\n", brcmf_feat_names[id]);
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seq_printf(seq, "\nQuirks: %08x\n", quirks);
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for (id = 0; id < BRCMF_FEAT_QUIRK_LAST; id++)
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if (quirks & BIT(id))
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seq_printf(seq, "\t%s\n", brcmf_quirk_names[id]);
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return 0;
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}
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#else
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static int brcmf_feat_debugfs_read(struct seq_file *seq, void *data)
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{
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return 0;
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}
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#endif /* DEBUG */
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struct brcmf_feat_fwfeat {
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const char * const fwid;
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u32 feat_flags;
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};
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static const struct brcmf_feat_fwfeat brcmf_feat_fwfeat_map[] = {
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/* brcmfmac43602-pcie.ap.bin from linux-firmware.git commit ea1178515b88 */
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{ "01-6cb8e269", BIT(BRCMF_FEAT_MONITOR) },
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/* brcmfmac4366b-pcie.bin from linux-firmware.git commit 52442afee990 */
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{ "01-c47a91a4", BIT(BRCMF_FEAT_MONITOR) },
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};
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static void brcmf_feat_firmware_overrides(struct brcmf_pub *drv)
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{
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const struct brcmf_feat_fwfeat *e;
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u32 feat_flags = 0;
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int i;
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for (i = 0; i < ARRAY_SIZE(brcmf_feat_fwfeat_map); i++) {
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e = &brcmf_feat_fwfeat_map[i];
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if (!strcmp(e->fwid, drv->fwver)) {
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feat_flags = e->feat_flags;
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break;
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}
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}
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if (!feat_flags)
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return;
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for (i = 0; i < BRCMF_FEAT_LAST; i++)
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if (feat_flags & BIT(i))
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brcmf_dbg(INFO, "enabling firmware feature: %s\n",
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brcmf_feat_names[i]);
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drv->feat_flags |= feat_flags;
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}
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/**
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* brcmf_feat_iovar_int_get() - determine feature through iovar query.
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*
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* @ifp: interface to query.
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* @id: feature id.
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* @name: iovar name.
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*/
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static void brcmf_feat_iovar_int_get(struct brcmf_if *ifp,
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enum brcmf_feat_id id, char *name)
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{
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u32 data;
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int err;
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/* we need to know firmware error */
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ifp->fwil_fwerr = true;
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err = brcmf_fil_iovar_int_get(ifp, name, &data);
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if (err == 0) {
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brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
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ifp->drvr->feat_flags |= BIT(id);
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} else {
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brcmf_dbg(TRACE, "%s feature check failed: %d\n",
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brcmf_feat_names[id], err);
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}
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ifp->fwil_fwerr = false;
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}
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static void brcmf_feat_iovar_data_set(struct brcmf_if *ifp,
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enum brcmf_feat_id id, char *name,
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const void *data, size_t len)
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{
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int err;
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/* we need to know firmware error */
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ifp->fwil_fwerr = true;
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err = brcmf_fil_iovar_data_set(ifp, name, data, len);
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if (err != -BRCMF_FW_UNSUPPORTED) {
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brcmf_dbg(INFO, "enabling feature: %s\n", brcmf_feat_names[id]);
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ifp->drvr->feat_flags |= BIT(id);
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} else {
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brcmf_dbg(TRACE, "%s feature check failed: %d\n",
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brcmf_feat_names[id], err);
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}
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ifp->fwil_fwerr = false;
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}
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#define MAX_CAPS_BUFFER_SIZE 768
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static void brcmf_feat_firmware_capabilities(struct brcmf_if *ifp)
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{
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char caps[MAX_CAPS_BUFFER_SIZE];
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enum brcmf_feat_id id;
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int i, err;
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err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
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if (err) {
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brcmf_err("could not get firmware cap (%d)\n", err);
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return;
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}
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brcmf_dbg(INFO, "[ %s]\n", caps);
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for (i = 0; i < ARRAY_SIZE(brcmf_fwcap_map); i++) {
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if (strnstr(caps, brcmf_fwcap_map[i].fwcap_id, sizeof(caps))) {
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id = brcmf_fwcap_map[i].feature;
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brcmf_dbg(INFO, "enabling feature: %s\n",
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brcmf_feat_names[id]);
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ifp->drvr->feat_flags |= BIT(id);
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}
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}
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}
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/**
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* brcmf_feat_fwcap_debugfs_read() - expose firmware capabilities to debugfs.
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*
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* @seq: sequence for debugfs entry.
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* @data: raw data pointer.
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*/
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static int brcmf_feat_fwcap_debugfs_read(struct seq_file *seq, void *data)
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{
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struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
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struct brcmf_if *ifp = brcmf_get_ifp(bus_if->drvr, 0);
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char caps[MAX_CAPS_BUFFER_SIZE + 1] = { };
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char *tmp;
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int err;
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err = brcmf_fil_iovar_data_get(ifp, "cap", caps, sizeof(caps));
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if (err) {
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brcmf_err("could not get firmware cap (%d)\n", err);
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return err;
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}
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/* Put every capability in a new line */
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for (tmp = caps; *tmp; tmp++) {
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if (*tmp == ' ')
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*tmp = '\n';
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}
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/* Usually there is a space at the end of capabilities string */
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seq_printf(seq, "%s", caps);
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/* So make sure we don't print two line breaks */
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if (tmp > caps && *(tmp - 1) != '\n')
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seq_printf(seq, "\n");
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return 0;
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}
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void brcmf_feat_attach(struct brcmf_pub *drvr)
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{
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struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0);
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struct brcmf_pno_macaddr_le pfn_mac;
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struct brcmf_gscan_config gscan_cfg;
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u32 wowl_cap;
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s32 err;
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brcmf_feat_firmware_capabilities(ifp);
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memset(&gscan_cfg, 0, sizeof(gscan_cfg));
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if (drvr->bus_if->chip != BRCM_CC_43430_CHIP_ID &&
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drvr->bus_if->chip != BRCM_CC_4345_CHIP_ID)
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brcmf_feat_iovar_data_set(ifp, BRCMF_FEAT_GSCAN,
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"pfn_gscan_cfg",
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&gscan_cfg, sizeof(gscan_cfg));
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_PNO, "pfn");
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if (drvr->bus_if->wowl_supported)
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_WOWL, "wowl");
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if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) {
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err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap);
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if (!err) {
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ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_WOWL_ARP_ND);
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if (wowl_cap & BRCMF_WOWL_PFN_FOUND)
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ifp->drvr->feat_flags |=
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BIT(BRCMF_FEAT_WOWL_ND);
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if (wowl_cap & BRCMF_WOWL_GTK_FAILURE)
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ifp->drvr->feat_flags |=
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BIT(BRCMF_FEAT_WOWL_GTK);
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}
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}
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/* MBSS does not work for 43362 */
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if (drvr->bus_if->chip == BRCM_CC_43362_CHIP_ID)
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ifp->drvr->feat_flags &= ~BIT(BRCMF_FEAT_MBSS);
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_RSDB, "rsdb_mode");
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_TDLS, "tdls_enable");
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_MFP, "mfp");
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pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;
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err = brcmf_fil_iovar_data_get(ifp, "pfn_macaddr", &pfn_mac,
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sizeof(pfn_mac));
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if (!err)
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ifp->drvr->feat_flags |= BIT(BRCMF_FEAT_SCAN_RANDOM_MAC);
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brcmf_feat_iovar_int_get(ifp, BRCMF_FEAT_FWSUP, "sup_wpa");
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if (drvr->settings->feature_disable) {
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brcmf_dbg(INFO, "Features: 0x%02x, disable: 0x%02x\n",
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ifp->drvr->feat_flags,
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drvr->settings->feature_disable);
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ifp->drvr->feat_flags &= ~drvr->settings->feature_disable;
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}
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brcmf_feat_firmware_overrides(drvr);
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/* set chip related quirks */
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switch (drvr->bus_if->chip) {
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case BRCM_CC_43236_CHIP_ID:
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drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_AUTO_AUTH);
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break;
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case BRCM_CC_4329_CHIP_ID:
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drvr->chip_quirks |= BIT(BRCMF_FEAT_QUIRK_NEED_MPC);
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break;
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default:
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/* no quirks */
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break;
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}
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}
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void brcmf_feat_debugfs_create(struct brcmf_pub *drvr)
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{
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brcmf_debugfs_add_entry(drvr, "features", brcmf_feat_debugfs_read);
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brcmf_debugfs_add_entry(drvr, "fwcap", brcmf_feat_fwcap_debugfs_read);
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}
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bool brcmf_feat_is_enabled(struct brcmf_if *ifp, enum brcmf_feat_id id)
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{
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return (ifp->drvr->feat_flags & BIT(id));
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}
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bool brcmf_feat_is_quirk_enabled(struct brcmf_if *ifp,
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enum brcmf_feat_quirk quirk)
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{
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return (ifp->drvr->chip_quirks & BIT(quirk));
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}
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