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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 <defs.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include "dhd.h"
#include "dhd_bus.h"
#include "dhd_dbg.h"
#include "fwil.h"
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;
if (drvr->bus_if->state == BRCMF_BUS_DOWN) {
brcmf_dbg(ERROR, "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_cdc_set_dcmd(drvr, ifp->idx, cmd, data, len);
else
err = brcmf_proto_cdc_query_dcmd(drvr, ifp->idx, cmd, data,
len);
if (err >= 0)
err = 0;
else
brcmf_dbg(ERROR, "Failed err=%d\n", err);
return err;
}
s32
brcmf_fil_cmd_data_set(struct net_device *ndev, u32 cmd, void *data, u32 len)
{
struct brcmf_if *ifp = netdev_priv(ndev);
s32 err;
mutex_lock(&ifp->drvr->proto_block);
brcmf_dbg(FIL, "cmd=%d, len=%d\n", cmd, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
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 net_device *ndev, u32 cmd, void *data, u32 len)
{
struct brcmf_if *ifp = netdev_priv(ndev);
s32 err;
mutex_lock(&ifp->drvr->proto_block);
err = brcmf_fil_cmd_data(ifp, cmd, data, len, false);
brcmf_dbg(FIL, "cmd=%d, len=%d\n", cmd, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
mutex_unlock(&ifp->drvr->proto_block);
return err;
}
s32
brcmf_fil_cmd_int_set(struct net_device *ndev, u32 cmd, u32 data)
{
struct brcmf_if *ifp = netdev_priv(ndev);
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), true);
mutex_unlock(&ifp->drvr->proto_block);
return err;
}
s32
brcmf_fil_cmd_int_get(struct net_device *ndev, u32 cmd, u32 *data)
{
struct brcmf_if *ifp = netdev_priv(ndev);
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);
return err;
}
static u32
brcmf_create_iovar(char *name, 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 net_device *ndev, char *name, void *data,
u32 len)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
s32 err;
u32 buflen;
mutex_lock(&drvr->proto_block);
brcmf_dbg(FIL, "name=%s, len=%d\n", name, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
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_dbg(ERROR, "Creating iovar failed\n");
}
mutex_unlock(&drvr->proto_block);
return err;
}
s32
brcmf_fil_iovar_data_get(struct net_device *ndev, char *name, void *data,
u32 len)
{
struct brcmf_if *ifp = netdev_priv(ndev);
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_dbg(ERROR, "Creating iovar failed\n");
}
brcmf_dbg(FIL, "name=%s, len=%d\n", name, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
mutex_unlock(&drvr->proto_block);
return err;
}
s32
brcmf_fil_iovar_int_set(struct net_device *ndev, char *name, u32 data)
{
__le32 data_le = cpu_to_le32(data);
return brcmf_fil_iovar_data_set(ndev, name, &data_le, sizeof(data_le));
}
s32
brcmf_fil_iovar_int_get(struct net_device *ndev, char *name, u32 *data)
{
__le32 data_le = cpu_to_le32(*data);
s32 err;
err = brcmf_fil_iovar_data_get(ndev, name, &data_le, sizeof(data_le));
if (err == 0)
*data = le32_to_cpu(data_le);
return err;
}
static u32
brcmf_create_bsscfg(s32 bssidx, char *name, char *data, u32 datalen, char *buf,
u32 buflen)
{
const s8 *prefix = "bsscfg:";
s8 *p;
u32 prefixlen;
u32 namelen;
u32 iolen;
__le32 bssidx_le;
if (bssidx == 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(bssidx_le) + datalen;
if (buflen < iolen) {
brcmf_dbg(ERROR, "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 */
bssidx_le = cpu_to_le32(bssidx);
memcpy(p, &bssidx_le, sizeof(bssidx_le));
p += sizeof(bssidx_le);
/* parameter buffer follows */
if (datalen)
memcpy(p, data, datalen);
return iolen;
}
s32
brcmf_fil_bsscfg_data_set(struct net_device *ndev, char *name,
void *data, u32 len)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
s32 err;
u32 buflen;
mutex_lock(&drvr->proto_block);
brcmf_dbg(FIL, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, name, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
buflen = brcmf_create_bsscfg(ifp->bssidx, 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_dbg(ERROR, "Creating bsscfg failed\n");
}
mutex_unlock(&drvr->proto_block);
return err;
}
s32
brcmf_fil_bsscfg_data_get(struct net_device *ndev, char *name,
void *data, u32 len)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
s32 err;
u32 buflen;
mutex_lock(&drvr->proto_block);
buflen = brcmf_create_bsscfg(ifp->bssidx, name, NULL, 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_dbg(ERROR, "Creating bsscfg failed\n");
}
brcmf_dbg(FIL, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, name, len);
brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
mutex_unlock(&drvr->proto_block);
return err;
}
s32
brcmf_fil_bsscfg_int_set(struct net_device *ndev, char *name, u32 data)
{
__le32 data_le = cpu_to_le32(data);
return brcmf_fil_bsscfg_data_set(ndev, name, &data_le,
sizeof(data_le));
}
s32
brcmf_fil_bsscfg_int_get(struct net_device *ndev, char *name, u32 *data)
{
__le32 data_le = cpu_to_le32(*data);
s32 err;
err = brcmf_fil_bsscfg_data_get(ndev, name, &data_le,
sizeof(data_le));
if (err == 0)
*data = le32_to_cpu(data_le);
return err;
}
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