| // SPDX-License-Identifier: ISC |
| /* |
| * Copyright (c) 2012 Broadcom Corporation |
| */ |
| |
| /* 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 "xtlv.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) { |
| bphy_err(drvr, "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: error=%d\n", 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; |
| } |
| BRCMF_EXPORT_SYMBOL_GPL(brcmf_fil_cmd_data_set); |
| |
| 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, err=%d\n", ifp->ifidx, cmd, |
| len, err); |
| 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; |
| } |
| BRCMF_EXPORT_SYMBOL_GPL(brcmf_fil_cmd_data_get); |
| |
| static u32 |
| brcmf_create_iovar(const 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, const 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; |
| bphy_err(drvr, "Creating iovar failed\n"); |
| } |
| |
| mutex_unlock(&drvr->proto_block); |
| return err; |
| } |
| BRCMF_EXPORT_SYMBOL_GPL(brcmf_fil_iovar_data_set); |
| |
| s32 |
| brcmf_fil_iovar_data_get(struct brcmf_if *ifp, const 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; |
| bphy_err(drvr, "Creating iovar failed\n"); |
| } |
| |
| brcmf_dbg(FIL, "ifidx=%d, name=%s, len=%d, err=%d\n", ifp->ifidx, name, |
| len, err); |
| 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; |
| } |
| BRCMF_EXPORT_SYMBOL_GPL(brcmf_fil_iovar_data_get); |
| |
| static u32 |
| brcmf_create_bsscfg(s32 bsscfgidx, const 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; /* length 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, const 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; |
| bphy_err(drvr, "Creating bsscfg failed\n"); |
| } |
| |
| mutex_unlock(&drvr->proto_block); |
| return err; |
| } |
| BRCMF_EXPORT_SYMBOL_GPL(brcmf_fil_bsscfg_data_set); |
| |
| s32 |
| brcmf_fil_bsscfg_data_get(struct brcmf_if *ifp, const 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; |
| bphy_err(drvr, "Creating bsscfg failed\n"); |
| } |
| brcmf_dbg(FIL, "ifidx=%d, bsscfgidx=%d, name=%s, len=%d, err=%d\n", |
| ifp->ifidx, ifp->bsscfgidx, name, len, err); |
| 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; |
| } |
| BRCMF_EXPORT_SYMBOL_GPL(brcmf_fil_bsscfg_data_get); |
| |
| static u32 brcmf_create_xtlv(const char *name, u16 id, char *data, u32 len, |
| char *buf, u32 buflen) |
| { |
| u32 iolen; |
| u32 nmlen; |
| |
| nmlen = strlen(name) + 1; |
| iolen = nmlen + brcmf_xtlv_data_size(len, BRCMF_XTLV_OPTION_ALIGN32); |
| |
| if (iolen > buflen) { |
| brcmf_err("buffer is too short\n"); |
| return 0; |
| } |
| |
| memcpy(buf, name, nmlen); |
| brcmf_xtlv_pack_header((void *)(buf + nmlen), id, len, data, |
| BRCMF_XTLV_OPTION_ALIGN32); |
| |
| return iolen; |
| } |
| |
| s32 brcmf_fil_xtlv_data_set(struct brcmf_if *ifp, const char *name, u16 id, |
| 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, id=%u, len=%u\n", ifp->ifidx, name, |
| id, len); |
| brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, |
| min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); |
| |
| buflen = brcmf_create_xtlv(name, id, 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; |
| bphy_err(drvr, "Creating xtlv failed\n"); |
| } |
| |
| mutex_unlock(&drvr->proto_block); |
| return err; |
| } |
| BRCMF_EXPORT_SYMBOL_GPL(brcmf_fil_xtlv_data_set); |
| |
| s32 brcmf_fil_xtlv_data_get(struct brcmf_if *ifp, const char *name, u16 id, |
| void *data, u32 len) |
| { |
| struct brcmf_pub *drvr = ifp->drvr; |
| s32 err; |
| u32 buflen; |
| |
| mutex_lock(&drvr->proto_block); |
| |
| buflen = brcmf_create_xtlv(name, id, 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; |
| bphy_err(drvr, "Creating bsscfg failed\n"); |
| } |
| brcmf_dbg(FIL, "ifidx=%d, name=%s, id=%u, len=%u, err=%d\n", |
| ifp->ifidx, name, id, len, err); |
| 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; |
| } |
| BRCMF_EXPORT_SYMBOL_GPL(brcmf_fil_xtlv_data_get); |
