/*
* Copyright (c) 2010 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/kernel.h>
#include <linux/string.h>
#include <linux/netdevice.h>
#include <linux/module.h>
#include <linux/firmware.h>
#include <brcmu_wifi.h>
#include <brcmu_utils.h>
#include "core.h"
#include "bus.h"
#include "debug.h"
#include "fwil.h"
#include "fwil_types.h"
#include "tracepoint.h"
#include "common.h"
#include "of.h"
#include "firmware.h"
#include "chip.h"
MODULE_AUTHOR("Broadcom Corporation");
MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver.");
MODULE_LICENSE("Dual BSD/GPL");
#define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40
#define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40
/* default boost value for RSSI_DELTA in preferred join selection */
#define BRCMF_JOIN_PREF_RSSI_BOOST 8
#define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */
static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0);
MODULE_PARM_DESC(txglomsz, "Maximum tx packet chain size [SDIO]");
/* Debug level configuration. See debug.h for bits, sysfs modifiable */
int brcmf_msg_level;
module_param_named(debug, brcmf_msg_level, int, 0600);
MODULE_PARM_DESC(debug, "Level of debug output");
static int brcmf_p2p_enable;
module_param_named(p2pon, brcmf_p2p_enable, int, 0);
MODULE_PARM_DESC(p2pon, "Enable legacy p2p management functionality");
static int brcmf_feature_disable;
module_param_named(feature_disable, brcmf_feature_disable, int, 0);
MODULE_PARM_DESC(feature_disable, "Disable features");
static char brcmf_firmware_path[BRCMF_FW_ALTPATH_LEN];
module_param_string(alternative_fw_path, brcmf_firmware_path,
BRCMF_FW_ALTPATH_LEN, 0400);
MODULE_PARM_DESC(alternative_fw_path, "Alternative firmware path");
static int brcmf_fcmode;
module_param_named(fcmode, brcmf_fcmode, int, 0);
MODULE_PARM_DESC(fcmode, "Mode of firmware signalled flow control");
static int brcmf_roamoff;
module_param_named(roamoff, brcmf_roamoff, int, 0400);
MODULE_PARM_DESC(roamoff, "Do not use internal roaming engine");
static int brcmf_iapp_enable;
module_param_named(iapp, brcmf_iapp_enable, int, 0);
MODULE_PARM_DESC(iapp, "Enable partial support for the obsoleted Inter-Access Point Protocol");
#ifdef DEBUG
/* always succeed brcmf_bus_started() */
static int brcmf_ignore_probe_fail;
module_param_named(ignore_probe_fail, brcmf_ignore_probe_fail, int, 0);
MODULE_PARM_DESC(ignore_probe_fail, "always succeed probe for debugging");
#endif
static struct brcmfmac_platform_data *brcmfmac_pdata;
struct brcmf_mp_global_t brcmf_mp_global;
void brcmf_c_set_joinpref_default(struct brcmf_if *ifp)
{
struct brcmf_join_pref_params join_pref_params[2];
int err;
/* Setup join_pref to select target by RSSI (boost on 5GHz) */
join_pref_params[0].type = BRCMF_JOIN_PREF_RSSI_DELTA;
join_pref_params[0].len = 2;
join_pref_params[0].rssi_gain = BRCMF_JOIN_PREF_RSSI_BOOST;
join_pref_params[0].band = WLC_BAND_5G;
join_pref_params[1].type = BRCMF_JOIN_PREF_RSSI;
join_pref_params[1].len = 2;
join_pref_params[1].rssi_gain = 0;
join_pref_params[1].band = 0;
err = brcmf_fil_iovar_data_set(ifp, "join_pref", join_pref_params,
sizeof(join_pref_params));
if (err)
brcmf_err("Set join_pref error (%d)\n", err);
}
static int brcmf_c_download(struct brcmf_if *ifp, u16 flag,
struct brcmf_dload_data_le *dload_buf,
u32 len)
{
s32 err;
flag |= (DLOAD_HANDLER_VER << DLOAD_FLAG_VER_SHIFT);
dload_buf->flag = cpu_to_le16(flag);
dload_buf->dload_type = cpu_to_le16(DL_TYPE_CLM);
dload_buf->len = cpu_to_le32(len);
dload_buf->crc = cpu_to_le32(0);
len = sizeof(*dload_buf) + len - 1;
err = brcmf_fil_iovar_data_set(ifp, "clmload", dload_buf, len);
return err;
}
static int brcmf_c_process_clm_blob(struct brcmf_if *ifp)
{
struct brcmf_bus *bus = ifp->drvr->bus_if;
struct brcmf_dload_data_le *chunk_buf;
const struct firmware *clm = NULL;
u8 clm_name[BRCMF_FW_NAME_LEN];
u32 chunk_len;
u32 datalen;
u32 cumulative_len;
u16 dl_flag = DL_BEGIN;
u32 status;
s32 err;
brcmf_dbg(TRACE, "Enter\n");
memset(clm_name, 0, sizeof(clm_name));
err = brcmf_bus_get_fwname(bus, ".clm_blob", clm_name);
if (err) {
brcmf_err("get CLM blob file name failed (%d)\n", err);
return err;
}
err = request_firmware(&clm, clm_name, bus->dev);
if (err) {
brcmf_info("no clm_blob available (err=%d), device may have limited channels available\n",
err);
return 0;
}
chunk_buf = kzalloc(sizeof(*chunk_buf) + MAX_CHUNK_LEN - 1, GFP_KERNEL);
if (!chunk_buf) {
err = -ENOMEM;
goto done;
}
datalen = clm->size;
cumulative_len = 0;
do {
if (datalen > MAX_CHUNK_LEN) {
chunk_len = MAX_CHUNK_LEN;
} else {
chunk_len = datalen;
dl_flag |= DL_END;
}
memcpy(chunk_buf->data, clm->data + cumulative_len, chunk_len);
err = brcmf_c_download(ifp, dl_flag, chunk_buf, chunk_len);
dl_flag &= ~DL_BEGIN;
cumulative_len += chunk_len;
datalen -= chunk_len;
} while ((datalen > 0) && (err == 0));
if (err) {
brcmf_err("clmload (%zu byte file) failed (%d); ",
clm->size, err);
/* Retrieve clmload_status and print */
err = brcmf_fil_iovar_int_get(ifp, "clmload_status", &status);
if (err)
brcmf_err("get clmload_status failed (%d)\n", err);
else
brcmf_dbg(INFO, "clmload_status=%d\n", status);
err = -EIO;
}
kfree(chunk_buf);
done:
release_firmware(clm);
return err;
}
int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
{
s8 eventmask[BRCMF_EVENTING_MASK_LEN];
u8 buf[BRCMF_DCMD_SMLEN];
struct brcmf_bus *bus;
struct brcmf_rev_info_le revinfo;
struct brcmf_rev_info *ri;
char *clmver;
char *ptr;
s32 err;
/* retreive mac address */
err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr,
sizeof(ifp->mac_addr));
if (err < 0) {
brcmf_err("Retreiving cur_etheraddr failed, %d\n", err);
goto done;
}
memcpy(ifp->drvr->wiphy->perm_addr, ifp->drvr->mac, ETH_ALEN);
memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac));
bus = ifp->drvr->bus_if;
ri = &ifp->drvr->revinfo;
err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_REVINFO,
&revinfo, sizeof(revinfo));
if (err < 0) {
brcmf_err("retrieving revision info failed, %d\n", err);
strlcpy(ri->chipname, "UNKNOWN", sizeof(ri->chipname));
} else {
ri->vendorid = le32_to_cpu(revinfo.vendorid);
ri->deviceid = le32_to_cpu(revinfo.deviceid);
ri->radiorev = le32_to_cpu(revinfo.radiorev);
ri->corerev = le32_to_cpu(revinfo.corerev);
ri->boardid = le32_to_cpu(revinfo.boardid);
ri->boardvendor = le32_to_cpu(revinfo.boardvendor);
ri->boardrev = le32_to_cpu(revinfo.boardrev);
ri->driverrev = le32_to_cpu(revinfo.driverrev);
ri->ucoderev = le32_to_cpu(revinfo.ucoderev);
ri->bus = le32_to_cpu(revinfo.bus);
ri->phytype = le32_to_cpu(revinfo.phytype);
ri->phyrev = le32_to_cpu(revinfo.phyrev);
ri->anarev = le32_to_cpu(revinfo.anarev);
ri->chippkg = le32_to_cpu(revinfo.chippkg);
ri->nvramrev = le32_to_cpu(revinfo.nvramrev);
/* use revinfo if not known yet */
if (!bus->chip) {
bus->chip = le32_to_cpu(revinfo.chipnum);
bus->chiprev = le32_to_cpu(revinfo.chiprev);
}
}
ri->result = err;
if (bus->chip)
brcmf_chip_name(bus->chip, bus->chiprev,
ri->chipname, sizeof(ri->chipname));
/* Do any CLM downloading */
err = brcmf_c_process_clm_blob(ifp);
if (err < 0) {
brcmf_err("download CLM blob file failed, %d\n", err);
goto done;
}
/* query for 'ver' to get version info from firmware */
memset(buf, 0, sizeof(buf));
strcpy(buf, "ver");
err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf));
if (err < 0) {
brcmf_err("Retreiving version information failed, %d\n",
err);
goto done;
}
ptr = (char *)buf;
strsep(&ptr, "\n");
/* Print fw version info */
brcmf_info("Firmware: %s %s\n", ri->chipname, buf);
/* locate firmware version number for ethtool */
ptr = strrchr(buf, ' ') + 1;
strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver));
/* Query for 'clmver' to get CLM version info from firmware */
memset(buf, 0, sizeof(buf));
err = brcmf_fil_iovar_data_get(ifp, "clmver", buf, sizeof(buf));
if (err) {
brcmf_dbg(TRACE, "retrieving clmver failed, %d\n", err);
} else {
clmver = (char *)buf;
/* store CLM version for adding it to revinfo debugfs file */
memcpy(ifp->drvr->clmver, clmver, sizeof(ifp->drvr->clmver));
/* Replace all newline/linefeed characters with space
* character
*/
strreplace(clmver, '\n', ' ');
brcmf_dbg(INFO, "CLM version = %s\n", clmver);
}
/* set mpc */
err = brcmf_fil_iovar_int_set(ifp, "mpc", 1);
if (err) {
brcmf_err("failed setting mpc\n");
goto done;
}
brcmf_c_set_joinpref_default(ifp);
/* Setup event_msgs, enable E_IF */
err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask,
BRCMF_EVENTING_MASK_LEN);
if (err) {
brcmf_err("Get event_msgs error (%d)\n", err);
goto done;
}
setbit(eventmask, BRCMF_E_IF);
err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask,
BRCMF_EVENTING_MASK_LEN);
if (err) {
brcmf_err("Set event_msgs error (%d)\n", err);
goto done;
}
/* Setup default scan channel time */
err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME,
BRCMF_DEFAULT_SCAN_CHANNEL_TIME);
if (err) {
brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n",
err);
goto done;
}
/* Setup default scan unassoc time */
err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME,
BRCMF_DEFAULT_SCAN_UNASSOC_TIME);
if (err) {
brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n",
err);
goto done;
}
/* Enable tx beamforming, errors can be ignored (not supported) */
(void)brcmf_fil_iovar_int_set(ifp, "txbf", 1);
done:
return err;
}
#ifndef CONFIG_BRCM_TRACING
void __brcmf_err(const char *func, const char *fmt, ...)
{
struct va_format vaf;
va_list args;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
pr_err("%s: %pV", func, &vaf);
va_end(args);
}
#endif
#if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG)
void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...)
{
struct va_format vaf = {
.fmt = fmt,
};
va_list args;
va_start(args, fmt);
vaf.va = &args;
if (brcmf_msg_level & level)
pr_debug("%s %pV", func, &vaf);
trace_brcmf_dbg(level, func, &vaf);
va_end(args);
}
#endif
static void brcmf_mp_attach(void)
{
/* If module param firmware path is set then this will always be used,
* if not set then if available use the platform data version. To make
* sure it gets initialized at all, always copy the module param version
*/
strlcpy(brcmf_mp_global.firmware_path, brcmf_firmware_path,
BRCMF_FW_ALTPATH_LEN);
if ((brcmfmac_pdata) && (brcmfmac_pdata->fw_alternative_path) &&
(brcmf_mp_global.firmware_path[0] == '\0')) {
strlcpy(brcmf_mp_global.firmware_path,
brcmfmac_pdata->fw_alternative_path,
BRCMF_FW_ALTPATH_LEN);
}
}
struct brcmf_mp_device *brcmf_get_module_param(struct device *dev,
enum brcmf_bus_type bus_type,
u32 chip, u32 chiprev)
{
struct brcmf_mp_device *settings;
struct brcmfmac_pd_device *device_pd;
bool found;
int i;
brcmf_dbg(INFO, "Enter, bus=%d, chip=%d, rev=%d\n", bus_type, chip,
chiprev);
settings = kzalloc(sizeof(*settings), GFP_ATOMIC);
if (!settings)
return NULL;
/* start by using the module paramaters */
settings->p2p_enable = !!brcmf_p2p_enable;
settings->feature_disable = brcmf_feature_disable;
settings->fcmode = brcmf_fcmode;
settings->roamoff = !!brcmf_roamoff;
settings->iapp = !!brcmf_iapp_enable;
#ifdef DEBUG
settings->ignore_probe_fail = !!brcmf_ignore_probe_fail;
#endif
if (bus_type == BRCMF_BUSTYPE_SDIO)
settings->bus.sdio.txglomsz = brcmf_sdiod_txglomsz;
/* See if there is any device specific platform data configured */
found = false;
if (brcmfmac_pdata) {
for (i = 0; i < brcmfmac_pdata->device_count; i++) {
device_pd = &brcmfmac_pdata->devices[i];
if ((device_pd->bus_type == bus_type) &&
(device_pd->id == chip) &&
((device_pd->rev == chiprev) ||
(device_pd->rev == -1))) {
brcmf_dbg(INFO, "Platform data for device found\n");
settings->country_codes =
device_pd->country_codes;
if (device_pd->bus_type == BRCMF_BUSTYPE_SDIO)
memcpy(&settings->bus.sdio,
&device_pd->bus.sdio,
sizeof(settings->bus.sdio));
found = true;
break;
}
}
}
if (!found) {
/* No platform data for this device, try OF (Open Firwmare) */
brcmf_of_probe(dev, bus_type, settings);
}
return settings;
}
void brcmf_release_module_param(struct brcmf_mp_device *module_param)
{
kfree(module_param);
}
static int __init brcmf_common_pd_probe(struct platform_device *pdev)
{
brcmf_dbg(INFO, "Enter\n");
brcmfmac_pdata = dev_get_platdata(&pdev->dev);
if (brcmfmac_pdata->power_on)
brcmfmac_pdata->power_on();
return 0;
}
static int brcmf_common_pd_remove(struct platform_device *pdev)
{
brcmf_dbg(INFO, "Enter\n");
if (brcmfmac_pdata->power_off)
brcmfmac_pdata->power_off();
return 0;
}
static struct platform_driver brcmf_pd = {
.remove = brcmf_common_pd_remove,
.driver = {
.name = BRCMFMAC_PDATA_NAME,
}
};
static int __init brcmfmac_module_init(void)
{
int err;
/* Get the platform data (if available) for our devices */
err = platform_driver_probe(&brcmf_pd, brcmf_common_pd_probe);
if (err == -ENODEV)
brcmf_dbg(INFO, "No platform data available.\n");
/* Initialize global module paramaters */
brcmf_mp_attach();
/* Continue the initialization by registering the different busses */
err = brcmf_core_init();
if (err) {
if (brcmfmac_pdata)
platform_driver_unregister(&brcmf_pd);
}
return err;
}
static void __exit brcmfmac_module_exit(void)
{
brcmf_core_exit();
if (brcmfmac_pdata)
platform_driver_unregister(&brcmf_pd);
}
module_init(brcmfmac_module_init);
module_exit(brcmfmac_module_exit);
