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author | Hante Meuleman <meuleman@broadcom.com> | 2012-10-22 10:36:14 -0700 |
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committer | John W. Linville <linville@tuxdriver.com> | 2012-10-29 15:28:07 -0400 |
commit | 81f5dcb8083077ca9bca10ca8e34bc8daf768dce (patch) | |
tree | 871af0a3b9a94df2f286ce36d4c9b389887cab41 /drivers/net/wireless/brcm80211/brcmfmac/fwil.c | |
parent | 6c4a5f2413da948e7d1d189c9d94f05afde8702a (diff) | |
download | op-kernel-dev-81f5dcb8083077ca9bca10ca8e34bc8daf768dce.zip op-kernel-dev-81f5dcb8083077ca9bca10ca8e34bc8daf768dce.tar.gz |
brcmfmac: refactor firmware interface layer.
Refactor the functions that are related to getting and setting
data to and and from the firmware.
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/fwil.c')
-rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/fwil.c | 345 |
1 files changed, 345 insertions, 0 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwil.c b/drivers/net/wireless/brcm80211/brcmfmac/fwil.c new file mode 100644 index 0000000..8528937 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwil.c @@ -0,0 +1,345 @@ +/* + * 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" + + +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, s32 bssidx, 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", bssidx, name, len); + brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data"); + + buflen = brcmf_create_bsscfg(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, s32 bssidx, 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(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", 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, s32 bssidx, char *name, + u32 data) +{ + __le32 data_le = cpu_to_le32(data); + + return brcmf_fil_bsscfg_data_set(ndev, bssidx, name, &data_le, + sizeof(data_le)); +} + +s32 +brcmf_fil_bsscfg_int_get(struct net_device *ndev, s32 bssidx, char *name, + u32 *data) +{ + __le32 data_le = cpu_to_le32(*data); + s32 err; + + err = brcmf_fil_bsscfg_data_get(ndev, bssidx, name, &data_le, + sizeof(data_le)); + if (err == 0) + *data = le32_to_cpu(data_le); + return err; +} |