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linux/drivers/net/wireless/iwlwifi/iwl-drv.c
Johannes Berg 965974a631 iwlwifi: remove iwl-wifi.h 
This file was recently introduced, but then
directly abused -- it contained private data
that shouldn't have been used by anything
but the implementation of firmware requests
and some very core code. Now that it is no
longer accessed by any code but the code in
iwl-drv.c, we can dissolve it.

Also rename the iwl_nic struct to iwl_drv to
better reflect where and how it is used.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-03-07 13:51:48 -05:00

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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-ucode.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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