/* * 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_dbg(FIL, "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; }