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/*
* Copyright (c) 2012 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.
*/
/* FWIL is the Firmware Interface Layer. In this module the support functions
* are located to set and get variables to and from the firmware.
*/
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include "core.h"
#include "bus.h"
#include "debug.h"
#include "tracepoint.h"
#include "fwil.h"
#include "proto.h"
#define MAX_HEX_DUMP_LEN 64
#ifdef DEBUG
static const char * const brcmf_fil_errstr[] = {
"BCME_OK",
"BCME_ERROR",
"BCME_BADARG",
"BCME_BADOPTION",
"BCME_NOTUP",
"BCME_NOTDOWN",
"BCME_NOTAP",
"BCME_NOTSTA",
"BCME_BADKEYIDX",
"BCME_RADIOOFF",
"BCME_NOTBANDLOCKED",
"BCME_NOCLK",
"BCME_BADRATESET",
"BCME_BADBAND",
"BCME_BUFTOOSHORT",
"BCME_BUFTOOLONG",
"BCME_BUSY",
"BCME_NOTASSOCIATED",
"BCME_BADSSIDLEN",
"BCME_OUTOFRANGECHAN",
"BCME_BADCHAN",
"BCME_BADADDR",
"BCME_NORESOURCE",
"BCME_UNSUPPORTED",
"BCME_BADLEN",
"BCME_NOTREADY",
"BCME_EPERM",
"BCME_NOMEM",
"BCME_ASSOCIATED",
"BCME_RANGE",
"BCME_NOTFOUND",
"BCME_WME_NOT_ENABLED",
"BCME_TSPEC_NOTFOUND",
"BCME_ACM_NOTSUPPORTED",
"BCME_NOT_WME_ASSOCIATION",
"BCME_SDIO_ERROR",
"BCME_DONGLE_DOWN",
"BCME_VERSION",
"BCME_TXFAIL",
"BCME_RXFAIL",
"BCME_NODEVICE",
"BCME_NMODE_DISABLED",
"BCME_NONRESIDENT",
"BCME_SCANREJECT",
"BCME_USAGE_ERROR",
"BCME_IOCTL_ERROR",
"BCME_SERIAL_PORT_ERR",
"BCME_DISABLED",
"BCME_DECERR",
"BCME_ENCERR",
"BCME_MICERR",
"BCME_REPLAY",
"BCME_IE_NOTFOUND",
};
static const char *brcmf_fil_get_errstr(u32 err)
{
if (err >= ARRAY_SIZE(brcmf_fil_errstr))
return "(unknown)";
return brcmf_fil_errstr[err];
}
#else
static const char *brcmf_fil_get_errstr(u32 err)
{
return "";
}
#endif /* DEBUG */
static s32
brcmf_fil_cmd_data(struct brcmf_if *ifp, u32 cmd, void *data, u32 len, bool set)
{
struct brcmf_pub *drvr = ifp->drvr;
s32 err, fwerr;
if (drvr->bus_if->state != BRCMF_BUS_UP) {
brcmf_err("bus is down. we have nothing to do.\n");
return -EIO;
}
if (data != NULL)
len = min_t(uint, len, BRCMF_DCMD_MAXLEN);
if (set)
err = brcmf_proto_set_dcmd(drvr, ifp->ifidx, cmd,
data, len, &fwerr);
else
err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd,
data, len, &fwerr);
if (err) {
brcmf_dbg(FIL, "Failed: %s (%d)\n",
brcmf_fil_get_errstr((u32)(-err)), err);
} else if (fwerr < 0) {
brcmf_dbg(FIL, "Firmware error: %s (%d)\n",
brcmf_fil_get_errstr((u32)(-fwerr)), fwerr);
err = -EBADE;
}
if (ifp->fwil_fwerr)
return fwerr;
return err;
}
s32
brcmf_fil_cmd_data_set(struct brcmf_if *ifp, u32 cmd, void *data, u32 len)
{
s32 err;
mutex_lock(&ifp->drvr->proto_block);
brcmf_dbg(FIL, "ifidx=%d, cmd=%d, len=%d\n", ifp->ifidx, cmd, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
err = brcmf_fil_cmd_data(ifp, cmd, data, len, true);
mutex_unlock(&ifp->drvr->proto_block);
return err;
}
s32
brcmf_fil_cmd_data_get(struct brcmf_if *ifp, u32 cmd, void *data, u32 len)
{
s32 err;
mutex_lock(&ifp->drvr->proto_block);
err = brcmf_fil_cmd_data(ifp, cmd, data, len, false);
brcmf_dbg(FIL, "ifidx=%d, cmd=%d, len=%d\n", ifp->ifidx, cmd, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
mutex_unlock(&ifp->drvr->proto_block);
return err;
}
s32
brcmf_fil_cmd_int_set(struct brcmf_if *ifp, u32 cmd, u32 data)
{
s32 err;
__le32 data_le = cpu_to_le32(data);
mutex_lock(&ifp->drvr->proto_block);
brcmf_dbg(FIL, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, data);
err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), true);
mutex_unlock(&ifp->drvr->proto_block);
return err;
}
s32
brcmf_fil_cmd_int_get(struct brcmf_if *ifp, u32 cmd, u32 *data)
{
s32 err;
__le32 data_le = cpu_to_le32(*data);
mutex_lock(&ifp->drvr->proto_block);
err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), false);
mutex_unlock(&ifp->drvr->proto_block);
*data = le32_to_cpu(data_le);
brcmf_dbg(FIL, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, *data);
return err;
}
static u32
brcmf_create_iovar(char *name, const char *data, u32 datalen,
char *buf, u32 buflen)
{
u32 len;
len = strlen(name) + 1;
if ((len + datalen) > buflen)
return 0;
memcpy(buf, name, len);
/* append data onto the end of the name string */
if (data && datalen)
memcpy(&buf[len], data, datalen);
return len + datalen;
}
s32
brcmf_fil_iovar_data_set(struct brcmf_if *ifp, char *name, const void *data,
u32 len)
{
struct brcmf_pub *drvr = ifp->drvr;
s32 err;
u32 buflen;
mutex_lock(&drvr->proto_block);
brcmf_dbg(FIL, "ifidx=%d, name=%s, len=%d\n", ifp->ifidx, name, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf,
sizeof(drvr->proto_buf));
if (buflen) {
err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf,
buflen, true);
} else {
err = -EPERM;
brcmf_err("Creating iovar failed\n");
}
mutex_unlock(&drvr->proto_block);
return err;
}
s32
brcmf_fil_iovar_data_get(struct brcmf_if *ifp, char *name, void *data,
u32 len)
{
struct brcmf_pub *drvr = ifp->drvr;
s32 err;
u32 buflen;
mutex_lock(&drvr->proto_block);
buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf,
sizeof(drvr->proto_buf));
if (buflen) {
err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf,
buflen, false);
if (err == 0)
memcpy(data, drvr->proto_buf, len);
} else {
err = -EPERM;
brcmf_err("Creating iovar failed\n");
}
brcmf_dbg(FIL, "ifidx=%d, name=%s, len=%d\n", ifp->ifidx, name, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
mutex_unlock(&drvr->proto_block);
return err;
}
s32
brcmf_fil_iovar_int_set(struct brcmf_if *ifp, char *name, u32 data)
{
__le32 data_le = cpu_to_le32(data);
return brcmf_fil_iovar_data_set(ifp, name, &data_le, sizeof(data_le));
}
s32
brcmf_fil_iovar_int_get(struct brcmf_if *ifp, char *name, u32 *data)
{
__le32 data_le = cpu_to_le32(*data);
s32 err;
err = brcmf_fil_iovar_data_get(ifp, name, &data_le, sizeof(data_le));
if (err == 0)
*data = le32_to_cpu(data_le);
return err;
}
static u32
brcmf_create_bsscfg(s32 bsscfgidx, char *name, char *data, u32 datalen,
char *buf, u32 buflen)
{
const s8 *prefix = "bsscfg:";
s8 *p;
u32 prefixlen;
u32 namelen;
u32 iolen;
__le32 bsscfgidx_le;
if (bsscfgidx == 0)
return brcmf_create_iovar(name, data, datalen, buf, buflen);
prefixlen = strlen(prefix);
namelen = strlen(name) + 1; /* lengh of iovar name + null */
iolen = prefixlen + namelen + sizeof(bsscfgidx_le) + datalen;
if (buflen < iolen) {
brcmf_err("buffer is too short\n");
return 0;
}
p = buf;
/* copy prefix, no null */
memcpy(p, prefix, prefixlen);
p += prefixlen;
/* copy iovar name including null */
memcpy(p, name, namelen);
p += namelen;
/* bss config index as first data */
bsscfgidx_le = cpu_to_le32(bsscfgidx);
memcpy(p, &bsscfgidx_le, sizeof(bsscfgidx_le));
p += sizeof(bsscfgidx_le);
/* parameter buffer follows */
if (datalen)
memcpy(p, data, datalen);
return iolen;
}
s32
brcmf_fil_bsscfg_data_set(struct brcmf_if *ifp, char *name,
void *data, u32 len)
{
struct brcmf_pub *drvr = ifp->drvr;
s32 err;
u32 buflen;
mutex_lock(&drvr->proto_block);
brcmf_dbg(FIL, "ifidx=%d, bsscfgidx=%d, name=%s, len=%d\n", ifp->ifidx,
ifp->bsscfgidx, name, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
buflen = brcmf_create_bsscfg(ifp->bsscfgidx, name, data, len,
drvr->proto_buf, sizeof(drvr->proto_buf));
if (buflen) {
err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf,
buflen, true);
} else {
err = -EPERM;
brcmf_err("Creating bsscfg failed\n");
}
mutex_unlock(&drvr->proto_block);
return err;
}
s32
brcmf_fil_bsscfg_data_get(struct brcmf_if *ifp, char *name,
void *data, u32 len)
{
struct brcmf_pub *drvr = ifp->drvr;
s32 err;
u32 buflen;
mutex_lock(&drvr->proto_block);
buflen = brcmf_create_bsscfg(ifp->bsscfgidx, name, data, len,
drvr->proto_buf, sizeof(drvr->proto_buf));
if (buflen) {
err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf,
buflen, false);
if (err == 0)
memcpy(data, drvr->proto_buf, len);
} else {
err = -EPERM;
brcmf_err("Creating bsscfg failed\n");
}
brcmf_dbg(FIL, "ifidx=%d, bsscfgidx=%d, name=%s, len=%d\n", ifp->ifidx,
ifp->bsscfgidx, name, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
mutex_unlock(&drvr->proto_block);
return err;
}
s32
brcmf_fil_bsscfg_int_set(struct brcmf_if *ifp, char *name, u32 data)
{
__le32 data_le = cpu_to_le32(data);
return brcmf_fil_bsscfg_data_set(ifp, name, &data_le,
sizeof(data_le));
}
s32
brcmf_fil_bsscfg_int_get(struct brcmf_if *ifp, char *name, u32 *data)
{
__le32 data_le = cpu_to_le32(*data);
s32 err;
err = brcmf_fil_bsscfg_data_get(ifp, name, &data_le,
sizeof(data_le));
if (err == 0)
*data = le32_to_cpu(data_le);
return err;
}
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