| /* |
| * 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 "dhd.h" |
| #include "dhd_bus.h" |
| #include "dhd_dbg.h" |
| #include "tracepoint.h" |
| #include "fwil.h" |
| #include "proto.h" |
| |
| |
| #define MAX_HEX_DUMP_LEN 64 |
| |
| |
| 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_DATA) { |
| 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); |
| else |
| err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, data, len); |
| |
| if (err >= 0) |
| err = 0; |
| else |
| brcmf_err("Failed err=%d\n", err); |
| |
| 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, "cmd=%d, len=%d\n", 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, "cmd=%d, len=%d\n", 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, "cmd=%d, value=%d\n", 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, "cmd=%d, value=%d\n", 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, "name=%s, len=%d\n", 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, "name=%s, len=%d\n", 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 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_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 */ |
| 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 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, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, 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->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_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->bssidx, 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, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, 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; |
| } |
