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Release 4.11 drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.c

/*
 * 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 "core.h"
#include "bus.h"
#include "debug.h"
#include "tracepoint.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]; }

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#else
static const char *brcmf_fil_get_errstr(u32 err) { return ""; }

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#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; if (drvr->bus_if->state != BRCMF_BUS_UP) { 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) return 0; brcmf_dbg(FIL, "Failed: %s (%d)\n", brcmf_fil_get_errstr((u32)(-err)), err); return err; }

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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; }

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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\n", ifp->ifidx, 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; }

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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, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, data); err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), true); mutex_unlock(&ifp->drvr->proto_block); return err; }

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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, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, *data); return err; }

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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; }

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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, "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; brcmf_err("Creating iovar failed\n"); } mutex_unlock(&drvr->proto_block); return err; }

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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, "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"); mutex_unlock(&drvr->proto_block); return err; }

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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)); }

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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; }

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static u32 brcmf_create_bsscfg(s32 bsscfgidx, 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; /* lengh 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; }

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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, "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; brcmf_err("Creating bsscfg failed\n"); } mutex_unlock(&drvr->proto_block); return err; }

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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->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; brcmf_err("Creating bsscfg failed\n"); } 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"); mutex_unlock(&drvr->proto_block); return err; }

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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)); }

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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; }

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