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OpenCloudOS-Kernel/drivers/net/wireless/iwlwifi/iwl-drv.c

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/******************************************************************************
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2007 - 2012 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
#include <linux/completion.h>
#include <linux/dma-mapping.h>
#include <linux/firmware.h>
#include <linux/module.h>
#include "iwl-drv.h"
#include "iwl-trans.h"
#include "iwl-shared.h"
#include "iwl-op-mode.h"
/* private includes */
#include "iwl-fw-file.h"
/**
* struct iwl_drv - drv common data
* @fw: the iwl_fw structure
* @shrd: pointer to common shared structure
* @op_mode: the running op_mode
* @fw_index: firmware revision to try loading
* @firmware_name: composite filename of ucode file to load
* @request_firmware_complete: the firmware has been obtained from user space
*/
struct iwl_drv {
struct iwl_fw fw;
struct iwl_shared *shrd;
struct iwl_op_mode *op_mode;
int fw_index; /* firmware we're trying to load */
char firmware_name[25]; /* name of firmware file to load */
struct completion request_firmware_complete;
};
static void iwl_free_fw_desc(struct iwl_drv *drv, struct fw_desc *desc)
{
if (desc->v_addr)
dma_free_coherent(trans(drv)->dev, desc->len,
desc->v_addr, desc->p_addr);
desc->v_addr = NULL;
desc->len = 0;
}
static void iwl_free_fw_img(struct iwl_drv *drv, struct fw_img *img)
{
iwl_free_fw_desc(drv, &img->code);
iwl_free_fw_desc(drv, &img->data);
}
static void iwl_dealloc_ucode(struct iwl_drv *drv)
{
iwl_free_fw_img(drv, &drv->fw.ucode_rt);
iwl_free_fw_img(drv, &drv->fw.ucode_init);
iwl_free_fw_img(drv, &drv->fw.ucode_wowlan);
}
static int iwl_alloc_fw_desc(struct iwl_drv *drv, struct fw_desc *desc,
const void *data, size_t len)
{
if (!len) {
desc->v_addr = NULL;
return -EINVAL;
}
desc->v_addr = dma_alloc_coherent(trans(drv)->dev, len,
&desc->p_addr, GFP_KERNEL);
if (!desc->v_addr)
return -ENOMEM;
desc->len = len;
memcpy(desc->v_addr, data, len);
return 0;
}
static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
#define UCODE_EXPERIMENTAL_INDEX 100
#define UCODE_EXPERIMENTAL_TAG "exp"
static int iwl_request_firmware(struct iwl_drv *drv, bool first)
{
const struct iwl_cfg *cfg = cfg(drv);
const char *name_pre = cfg->fw_name_pre;
char tag[8];
if (first) {
#ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
drv->fw_index = UCODE_EXPERIMENTAL_INDEX;
strcpy(tag, UCODE_EXPERIMENTAL_TAG);
} else if (drv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
#endif
drv->fw_index = cfg->ucode_api_max;
sprintf(tag, "%d", drv->fw_index);
} else {
drv->fw_index--;
sprintf(tag, "%d", drv->fw_index);
}
if (drv->fw_index < cfg->ucode_api_min) {
IWL_ERR(drv, "no suitable firmware found!\n");
return -ENOENT;
}
sprintf(drv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
IWL_DEBUG_INFO(drv, "attempting to load firmware %s'%s'\n",
(drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
? "EXPERIMENTAL " : "",
drv->firmware_name);
return request_firmware_nowait(THIS_MODULE, 1, drv->firmware_name,
trans(drv)->dev,
GFP_KERNEL, drv, iwl_ucode_callback);
}
struct iwlagn_firmware_pieces {
const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
size_t inst_size, data_size, init_size, init_data_size,
wowlan_inst_size, wowlan_data_size;
u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
};
static int iwl_parse_v1_v2_firmware(struct iwl_drv *drv,
const struct firmware *ucode_raw,
struct iwlagn_firmware_pieces *pieces)
{
struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
u32 api_ver, hdr_size, build;
char buildstr[25];
const u8 *src;
drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
switch (api_ver) {
default:
hdr_size = 28;
if (ucode_raw->size < hdr_size) {
IWL_ERR(drv, "File size too small!\n");
return -EINVAL;
}
build = le32_to_cpu(ucode->u.v2.build);
pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
pieces->init_data_size =
le32_to_cpu(ucode->u.v2.init_data_size);
src = ucode->u.v2.data;
break;
case 0:
case 1:
case 2:
hdr_size = 24;
if (ucode_raw->size < hdr_size) {
IWL_ERR(drv, "File size too small!\n");
return -EINVAL;
}
build = 0;
pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
pieces->init_data_size =
le32_to_cpu(ucode->u.v1.init_data_size);
src = ucode->u.v1.data;
break;
}
if (build)
sprintf(buildstr, " build %u%s", build,
(drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
? " (EXP)" : "");
else
buildstr[0] = '\0';
snprintf(drv->fw.fw_version,
sizeof(drv->fw.fw_version),
"%u.%u.%u.%u%s",
IWL_UCODE_MAJOR(drv->fw.ucode_ver),
IWL_UCODE_MINOR(drv->fw.ucode_ver),
IWL_UCODE_API(drv->fw.ucode_ver),
IWL_UCODE_SERIAL(drv->fw.ucode_ver),
buildstr);
/* Verify size of file vs. image size info in file's header */
if (ucode_raw->size != hdr_size + pieces->inst_size +
pieces->data_size + pieces->init_size +
pieces->init_data_size) {
IWL_ERR(drv,
"uCode file size %d does not match expected size\n",
(int)ucode_raw->size);
return -EINVAL;
}
pieces->inst = src;
src += pieces->inst_size;
pieces->data = src;
src += pieces->data_size;
pieces->init = src;
src += pieces->init_size;
pieces->init_data = src;
src += pieces->init_data_size;
return 0;
}
static int iwl_parse_tlv_firmware(struct iwl_drv *drv,
const struct firmware *ucode_raw,
struct iwlagn_firmware_pieces *pieces,
struct iwl_ucode_capabilities *capa)
{
struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
struct iwl_ucode_tlv *tlv;
size_t len = ucode_raw->size;
const u8 *data;
int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
int tmp;
u64 alternatives;
u32 tlv_len;
enum iwl_ucode_tlv_type tlv_type;
const u8 *tlv_data;
char buildstr[25];
u32 build;
if (len < sizeof(*ucode)) {
IWL_ERR(drv, "uCode has invalid length: %zd\n", len);
return -EINVAL;
}
if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
IWL_ERR(drv, "invalid uCode magic: 0X%x\n",
le32_to_cpu(ucode->magic));
return -EINVAL;
}
/*
* Check which alternatives are present, and "downgrade"
* when the chosen alternative is not present, warning
* the user when that happens. Some files may not have
* any alternatives, so don't warn in that case.
*/
alternatives = le64_to_cpu(ucode->alternatives);
tmp = wanted_alternative;
if (wanted_alternative > 63)
wanted_alternative = 63;
while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
wanted_alternative--;
if (wanted_alternative && wanted_alternative != tmp)
IWL_WARN(drv,
"uCode alternative %d not available, choosing %d\n",
tmp, wanted_alternative);
drv->fw.ucode_ver = le32_to_cpu(ucode->ver);
build = le32_to_cpu(ucode->build);
if (build)
sprintf(buildstr, " build %u%s", build,
(drv->fw_index == UCODE_EXPERIMENTAL_INDEX)
? " (EXP)" : "");
else
buildstr[0] = '\0';
snprintf(drv->fw.fw_version,
sizeof(drv->fw.fw_version),
"%u.%u.%u.%u%s",
IWL_UCODE_MAJOR(drv->fw.ucode_ver),
IWL_UCODE_MINOR(drv->fw.ucode_ver),
IWL_UCODE_API(drv->fw.ucode_ver),
IWL_UCODE_SERIAL(drv->fw.ucode_ver),
buildstr);
data = ucode->data;
len -= sizeof(*ucode);
while (len >= sizeof(*tlv)) {
u16 tlv_alt;
len -= sizeof(*tlv);
tlv = (void *)data;
tlv_len = le32_to_cpu(tlv->length);
tlv_type = le16_to_cpu(tlv->type);
tlv_alt = le16_to_cpu(tlv->alternative);
tlv_data = tlv->data;
if (len < tlv_len) {
IWL_ERR(drv, "invalid TLV len: %zd/%u\n",
len, tlv_len);
return -EINVAL;
}
len -= ALIGN(tlv_len, 4);
data += sizeof(*tlv) + ALIGN(tlv_len, 4);
/*
* Alternative 0 is always valid.
*
* Skip alternative TLVs that are not selected.
*/
if (tlv_alt != 0 && tlv_alt != wanted_alternative)
continue;
switch (tlv_type) {
case IWL_UCODE_TLV_INST:
pieces->inst = tlv_data;
pieces->inst_size = tlv_len;
break;
case IWL_UCODE_TLV_DATA:
pieces->data = tlv_data;
pieces->data_size = tlv_len;
break;
case IWL_UCODE_TLV_INIT:
pieces->init = tlv_data;
pieces->init_size = tlv_len;
break;
case IWL_UCODE_TLV_INIT_DATA:
pieces->init_data = tlv_data;
pieces->init_data_size = tlv_len;
break;
case IWL_UCODE_TLV_BOOT:
IWL_ERR(drv, "Found unexpected BOOT ucode\n");
break;
case IWL_UCODE_TLV_PROBE_MAX_LEN:
if (tlv_len != sizeof(u32))
goto invalid_tlv_len;
capa->max_probe_length =
le32_to_cpup((__le32 *)tlv_data);
break;
case IWL_UCODE_TLV_PAN:
if (tlv_len)
goto invalid_tlv_len;
capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
break;
case IWL_UCODE_TLV_FLAGS:
/* must be at least one u32 */
if (tlv_len < sizeof(u32))
goto invalid_tlv_len;
/* and a proper number of u32s */
if (tlv_len % sizeof(u32))
goto invalid_tlv_len;
/*
* This driver only reads the first u32 as
* right now no more features are defined,
* if that changes then either the driver
* will not work with the new firmware, or
* it'll not take advantage of new features.
*/
capa->flags = le32_to_cpup((__le32 *)tlv_data);
break;
case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
if (tlv_len != sizeof(u32))
goto invalid_tlv_len;
pieces->init_evtlog_ptr =
le32_to_cpup((__le32 *)tlv_data);
break;
case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
if (tlv_len != sizeof(u32))
goto invalid_tlv_len;
pieces->init_evtlog_size =
le32_to_cpup((__le32 *)tlv_data);
break;
case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
if (tlv_len != sizeof(u32))
goto invalid_tlv_len;
pieces->init_errlog_ptr =
le32_to_cpup((__le32 *)tlv_data);
break;
case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
if (tlv_len != sizeof(u32))
goto invalid_tlv_len;
pieces->inst_evtlog_ptr =
le32_to_cpup((__le32 *)tlv_data);
break;
case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
if (tlv_len != sizeof(u32))
goto invalid_tlv_len;
pieces->inst_evtlog_size =
le32_to_cpup((__le32 *)tlv_data);
break;
case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
if (tlv_len != sizeof(u32))
goto invalid_tlv_len;
pieces->inst_errlog_ptr =
le32_to_cpup((__le32 *)tlv_data);
break;
case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
if (tlv_len)
goto invalid_tlv_len;
drv->fw.enhance_sensitivity_table = true;
break;
case IWL_UCODE_TLV_WOWLAN_INST:
pieces->wowlan_inst = tlv_data;
pieces->wowlan_inst_size = tlv_len;
break;
case IWL_UCODE_TLV_WOWLAN_DATA:
pieces->wowlan_data = tlv_data;
pieces->wowlan_data_size = tlv_len;
break;
case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
if (tlv_len != sizeof(u32))
goto invalid_tlv_len;
capa->standard_phy_calibration_size =
le32_to_cpup((__le32 *)tlv_data);
break;
default:
IWL_DEBUG_INFO(drv, "unknown TLV: %d\n", tlv_type);
break;
}
}
if (len) {
IWL_ERR(drv, "invalid TLV after parsing: %zd\n", len);
iwl_print_hex_dump(drv, IWL_DL_FW, (u8 *)data, len);
return -EINVAL;
}
return 0;
invalid_tlv_len:
IWL_ERR(drv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
iwl_print_hex_dump(drv, IWL_DL_FW, tlv_data, tlv_len);
return -EINVAL;
}
/**
* iwl_ucode_callback - callback when firmware was loaded
*
* If loaded successfully, copies the firmware into buffers
* for the card to fetch (via DMA).
*/
static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
{
struct iwl_drv *drv = context;
const struct iwl_cfg *cfg = cfg(drv);
struct iwl_fw *fw = &drv->fw;
struct iwl_ucode_header *ucode;
int err;
struct iwlagn_firmware_pieces pieces;
const unsigned int api_max = cfg->ucode_api_max;
unsigned int api_ok = cfg->ucode_api_ok;
const unsigned int api_min = cfg->ucode_api_min;
u32 api_ver;
fw->ucode_capa.max_probe_length = 200;
fw->ucode_capa.standard_phy_calibration_size =
IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;
if (!api_ok)
api_ok = api_max;
memset(&pieces, 0, sizeof(pieces));
if (!ucode_raw) {
if (drv->fw_index <= api_ok)
IWL_ERR(drv,
"request for firmware file '%s' failed.\n",
drv->firmware_name);
goto try_again;
}
IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
drv->firmware_name, ucode_raw->size);
/* Make sure that we got at least the API version number */
if (ucode_raw->size < 4) {
IWL_ERR(drv, "File size way too small!\n");
goto try_again;
}
/* Data from ucode file: header followed by uCode images */
ucode = (struct iwl_ucode_header *)ucode_raw->data;
if (ucode->ver)
err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
else
err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
&fw->ucode_capa);
if (err)
goto try_again;
api_ver = IWL_UCODE_API(drv->fw.ucode_ver);
/*
* api_ver should match the api version forming part of the
* firmware filename ... but we don't check for that and only rely
* on the API version read from firmware header from here on forward
*/
/* no api version check required for experimental uCode */
if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
if (api_ver < api_min || api_ver > api_max) {
IWL_ERR(drv,
"Driver unable to support your firmware API. "
"Driver supports v%u, firmware is v%u.\n",
api_max, api_ver);
goto try_again;
}
if (api_ver < api_ok) {
if (api_ok != api_max)
IWL_ERR(drv, "Firmware has old API version, "
"expected v%u through v%u, got v%u.\n",
api_ok, api_max, api_ver);
else
IWL_ERR(drv, "Firmware has old API version, "
"expected v%u, got v%u.\n",
api_max, api_ver);
IWL_ERR(drv, "New firmware can be obtained from "
"http://www.intellinuxwireless.org/.\n");
}
}
IWL_INFO(drv, "loaded firmware version %s", drv->fw.fw_version);
/*
* For any of the failures below (before allocating pci memory)
* we will try to load a version with a smaller API -- maybe the
* user just got a corrupted version of the latest API.
*/
IWL_DEBUG_INFO(drv, "f/w package hdr ucode version raw = 0x%x\n",
drv->fw.ucode_ver);
IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
pieces.inst_size);
IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
pieces.data_size);
IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
pieces.init_size);
IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
pieces.init_data_size);
/* Verify that uCode images will fit in card's SRAM */
if (pieces.inst_size > cfg->max_inst_size) {
IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
pieces.inst_size);
goto try_again;
}
if (pieces.data_size > cfg->max_data_size) {
IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
pieces.data_size);
goto try_again;
}
if (pieces.init_size > cfg->max_inst_size) {
IWL_ERR(drv, "uCode init instr len %Zd too large to fit in\n",
pieces.init_size);
goto try_again;
}
if (pieces.init_data_size > cfg->max_data_size) {
IWL_ERR(drv, "uCode init data len %Zd too large to fit in\n",
pieces.init_data_size);
goto try_again;
}
/* Allocate ucode buffers for card's bus-master loading ... */
/* Runtime instructions and 2 copies of data:
* 1) unmodified from disk
* 2) backup cache for save/restore during power-downs */
if (iwl_alloc_fw_desc(drv, &drv->fw.ucode_rt.code,
pieces.inst, pieces.inst_size))
goto err_pci_alloc;
if (iwl_alloc_fw_desc(drv, &drv->fw.ucode_rt.data,
pieces.data, pieces.data_size))
goto err_pci_alloc;
/* Initialization instructions and data */
if (pieces.init_size && pieces.init_data_size) {
if (iwl_alloc_fw_desc(drv,
&drv->fw.ucode_init.code,
pieces.init, pieces.init_size))
goto err_pci_alloc;
if (iwl_alloc_fw_desc(drv,
&drv->fw.ucode_init.data,
pieces.init_data, pieces.init_data_size))
goto err_pci_alloc;
}
/* WoWLAN instructions and data */
if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
if (iwl_alloc_fw_desc(drv,
&drv->fw.ucode_wowlan.code,
pieces.wowlan_inst,
pieces.wowlan_inst_size))
goto err_pci_alloc;
if (iwl_alloc_fw_desc(drv,
&drv->fw.ucode_wowlan.data,
pieces.wowlan_data,
pieces.wowlan_data_size))
goto err_pci_alloc;
}
/* Now that we can no longer fail, copy information */
/*
* The (size - 16) / 12 formula is based on the information recorded
* for each event, which is of mode 1 (including timestamp) for all
* new microcodes that include this information.
*/
fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
if (pieces.init_evtlog_size)
fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
else
fw->init_evtlog_size =
cfg->base_params->max_event_log_size;
fw->init_errlog_ptr = pieces.init_errlog_ptr;
fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
if (pieces.inst_evtlog_size)
fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
else
fw->inst_evtlog_size =
cfg->base_params->max_event_log_size;
fw->inst_errlog_ptr = pieces.inst_errlog_ptr;
/*
* figure out the offset of chain noise reset and gain commands
* base on the size of standard phy calibration commands table size
*/
if (fw->ucode_capa.standard_phy_calibration_size >
IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
fw->ucode_capa.standard_phy_calibration_size =
IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
/* We have our copies now, allow OS release its copies */
release_firmware(ucode_raw);
complete(&drv->request_firmware_complete);
drv->op_mode = iwl_dvm_ops.start(drv->shrd->trans, &drv->fw);
if (!drv->op_mode)
goto out_unbind;
return;
try_again:
/* try next, if any */
release_firmware(ucode_raw);
if (iwl_request_firmware(drv, false))
goto out_unbind;
return;
err_pci_alloc:
IWL_ERR(drv, "failed to allocate pci memory\n");
iwl_dealloc_ucode(drv);
release_firmware(ucode_raw);
out_unbind:
complete(&drv->request_firmware_complete);
device_release_driver(trans(drv)->dev);
}
int iwl_drv_start(struct iwl_shared *shrd,
struct iwl_trans *trans, const struct iwl_cfg *cfg)
{
struct iwl_drv *drv;
int ret;
shrd->cfg = cfg;
drv = kzalloc(sizeof(*drv), GFP_KERNEL);
if (!drv) {
dev_printk(KERN_ERR, trans->dev, "Couldn't allocate iwl_drv");
return -ENOMEM;
}
drv->shrd = shrd;
shrd->drv = drv;
init_completion(&drv->request_firmware_complete);
ret = iwl_request_firmware(drv, true);
if (ret) {
dev_printk(KERN_ERR, trans->dev, "Couldn't request the fw");
kfree(drv);
shrd->drv = NULL;
}
return ret;
}
void iwl_drv_stop(struct iwl_shared *shrd)
{
struct iwl_drv *drv = shrd->drv;
wait_for_completion(&drv->request_firmware_complete);
/* op_mode can be NULL if its start failed */
if (drv->op_mode)
iwl_op_mode_stop(drv->op_mode);
iwl_dealloc_ucode(drv);
kfree(drv);
shrd->drv = NULL;
}
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