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android-kvm / linux / efc499f9807bfc179c66b7c3524e30370c6fd1b1 / . / drivers / net / wireless / intel / iwlwifi / mvm / fw-dbg.c
blob: 6938cd37be57c6e48ae9efc4d559b58845fd705c [file] [log] [blame]
/******************************************************************************
*
* 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) 2008 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
* Copyright(c) 2015 Intel Deutschland GmbH
*
* 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;
*
* The full GNU General Public License is included in this distribution
* in the file called COPYING.
*
* Contact Information:
* Intel Linux Wireless <linuxwifi@intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
* Copyright(c) 2015 Intel Deutschland GmbH
* 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/devcoredump.h>
#include "fw-dbg.h"
#include "iwl-io.h"
#include "mvm.h"
#include "iwl-prph.h"
#include "iwl-csr.h"
static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
const void *data, size_t datalen)
{
const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
ssize_t bytes_read;
ssize_t bytes_read_trans;
if (offset < dump_ptrs->op_mode_len) {
bytes_read = min_t(ssize_t, count,
dump_ptrs->op_mode_len - offset);
memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
bytes_read);
offset += bytes_read;
count -= bytes_read;
if (count == 0)
return bytes_read;
} else {
bytes_read = 0;
}
if (!dump_ptrs->trans_ptr)
return bytes_read;
offset -= dump_ptrs->op_mode_len;
bytes_read_trans = min_t(ssize_t, count,
dump_ptrs->trans_ptr->len - offset);
memcpy(buffer + bytes_read,
(u8 *)dump_ptrs->trans_ptr->data + offset,
bytes_read_trans);
return bytes_read + bytes_read_trans;
}
static void iwl_mvm_free_coredump(const void *data)
{
const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
vfree(fw_error_dump->op_mode_ptr);
vfree(fw_error_dump->trans_ptr);
kfree(fw_error_dump);
}
#define RADIO_REG_MAX_READ 0x2ad
static void iwl_mvm_read_radio_reg(struct iwl_mvm *mvm,
struct iwl_fw_error_dump_data **dump_data)
{
u8 *pos = (void *)(*dump_data)->data;
unsigned long flags;
int i;
if (!iwl_trans_grab_nic_access(mvm->trans, &flags))
return;
(*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RADIO_REG);
(*dump_data)->len = cpu_to_le32(RADIO_REG_MAX_READ);
for (i = 0; i < RADIO_REG_MAX_READ; i++) {
u32 rd_cmd = RADIO_RSP_RD_CMD;
rd_cmd |= i << RADIO_RSP_ADDR_POS;
iwl_write_prph_no_grab(mvm->trans, RSP_RADIO_CMD, rd_cmd);
*pos = (u8)iwl_read_prph_no_grab(mvm->trans, RSP_RADIO_RDDAT);
pos++;
}
*dump_data = iwl_fw_error_next_data(*dump_data);
iwl_trans_release_nic_access(mvm->trans, &flags);
}
static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
struct iwl_fw_error_dump_data **dump_data)
{
struct iwl_fw_error_dump_fifo *fifo_hdr;
u32 *fifo_data;
u32 fifo_len;
unsigned long flags;
int i, j;
if (!iwl_trans_grab_nic_access(mvm->trans, &flags))
return;
/* Pull RXF data from all RXFs */
for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
/*
* Keep aside the additional offset that might be needed for
* next RXF
*/
u32 offset_diff = RXF_DIFF_FROM_PREV * i;
fifo_hdr = (void *)(*dump_data)->data;
fifo_data = (void *)fifo_hdr->data;
fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
/* No need to try to read the data if the length is 0 */
if (fifo_len == 0)
continue;
/* Add a TLV for the RXF */
(*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
(*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
fifo_hdr->fifo_num = cpu_to_le32(i);
fifo_hdr->available_bytes =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
RXF_RD_D_SPACE +
offset_diff));
fifo_hdr->wr_ptr =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
RXF_RD_WR_PTR +
offset_diff));
fifo_hdr->rd_ptr =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
RXF_RD_RD_PTR +
offset_diff));
fifo_hdr->fence_ptr =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
RXF_RD_FENCE_PTR +
offset_diff));
fifo_hdr->fence_mode =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
RXF_SET_FENCE_MODE +
offset_diff));
/* Lock fence */
iwl_trans_write_prph(mvm->trans,
RXF_SET_FENCE_MODE + offset_diff, 0x1);
/* Set fence pointer to the same place like WR pointer */
iwl_trans_write_prph(mvm->trans,
RXF_LD_WR2FENCE + offset_diff, 0x1);
/* Set fence offset */
iwl_trans_write_prph(mvm->trans,
RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
0x0);
/* Read FIFO */
fifo_len /= sizeof(u32); /* Size in DWORDS */
for (j = 0; j < fifo_len; j++)
fifo_data[j] = iwl_trans_read_prph(mvm->trans,
RXF_FIFO_RD_FENCE_INC +
offset_diff);
*dump_data = iwl_fw_error_next_data(*dump_data);
}
/* Pull TXF data from all TXFs */
for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
/* Mark the number of TXF we're pulling now */
iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
fifo_hdr = (void *)(*dump_data)->data;
fifo_data = (void *)fifo_hdr->data;
fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
/* No need to try to read the data if the length is 0 */
if (fifo_len == 0)
continue;
/* Add a TLV for the FIFO */
(*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
(*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
fifo_hdr->fifo_num = cpu_to_le32(i);
fifo_hdr->available_bytes =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
TXF_FIFO_ITEM_CNT));
fifo_hdr->wr_ptr =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
TXF_WR_PTR));
fifo_hdr->rd_ptr =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
TXF_RD_PTR));
fifo_hdr->fence_ptr =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
TXF_FENCE_PTR));
fifo_hdr->fence_mode =
cpu_to_le32(iwl_trans_read_prph(mvm->trans,
TXF_LOCK_FENCE));
/* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
TXF_WR_PTR);
/* Dummy-read to advance the read pointer to the head */
iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
/* Read FIFO */
fifo_len /= sizeof(u32); /* Size in DWORDS */
for (j = 0; j < fifo_len; j++)
fifo_data[j] = iwl_trans_read_prph(mvm->trans,
TXF_READ_MODIFY_DATA);
*dump_data = iwl_fw_error_next_data(*dump_data);
}
iwl_trans_release_nic_access(mvm->trans, &flags);
}
void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
{
if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert)
return;
kfree(mvm->fw_dump_desc);
mvm->fw_dump_desc = NULL;
}
#define IWL8260_ICCM_OFFSET 0x44000 /* Only for B-step */
#define IWL8260_ICCM_LEN 0xC000 /* Only for B-step */
static const struct {
u32 start, end;
} iwl_prph_dump_addr[] = {
{ .start = 0x00a00000, .end = 0x00a00000 },
{ .start = 0x00a0000c, .end = 0x00a00024 },
{ .start = 0x00a0002c, .end = 0x00a0003c },
{ .start = 0x00a00410, .end = 0x00a00418 },
{ .start = 0x00a00420, .end = 0x00a00420 },
{ .start = 0x00a00428, .end = 0x00a00428 },
{ .start = 0x00a00430, .end = 0x00a0043c },
{ .start = 0x00a00444, .end = 0x00a00444 },
{ .start = 0x00a004c0, .end = 0x00a004cc },
{ .start = 0x00a004d8, .end = 0x00a004d8 },
{ .start = 0x00a004e0, .end = 0x00a004f0 },
{ .start = 0x00a00840, .end = 0x00a00840 },
{ .start = 0x00a00850, .end = 0x00a00858 },
{ .start = 0x00a01004, .end = 0x00a01008 },
{ .start = 0x00a01010, .end = 0x00a01010 },
{ .start = 0x00a01018, .end = 0x00a01018 },
{ .start = 0x00a01024, .end = 0x00a01024 },
{ .start = 0x00a0102c, .end = 0x00a01034 },
{ .start = 0x00a0103c, .end = 0x00a01040 },
{ .start = 0x00a01048, .end = 0x00a01094 },
{ .start = 0x00a01c00, .end = 0x00a01c20 },
{ .start = 0x00a01c58, .end = 0x00a01c58 },
{ .start = 0x00a01c7c, .end = 0x00a01c7c },
{ .start = 0x00a01c28, .end = 0x00a01c54 },
{ .start = 0x00a01c5c, .end = 0x00a01c5c },
{ .start = 0x00a01c60, .end = 0x00a01cdc },
{ .start = 0x00a01ce0, .end = 0x00a01d0c },
{ .start = 0x00a01d18, .end = 0x00a01d20 },
{ .start = 0x00a01d2c, .end = 0x00a01d30 },
{ .start = 0x00a01d40, .end = 0x00a01d5c },
{ .start = 0x00a01d80, .end = 0x00a01d80 },
{ .start = 0x00a01d98, .end = 0x00a01d9c },
{ .start = 0x00a01da8, .end = 0x00a01da8 },
{ .start = 0x00a01db8, .end = 0x00a01df4 },
{ .start = 0x00a01dc0, .end = 0x00a01dfc },
{ .start = 0x00a01e00, .end = 0x00a01e2c },
{ .start = 0x00a01e40, .end = 0x00a01e60 },
{ .start = 0x00a01e68, .end = 0x00a01e6c },
{ .start = 0x00a01e74, .end = 0x00a01e74 },
{ .start = 0x00a01e84, .end = 0x00a01e90 },
{ .start = 0x00a01e9c, .end = 0x00a01ec4 },
{ .start = 0x00a01ed0, .end = 0x00a01ee0 },
{ .start = 0x00a01f00, .end = 0x00a01f1c },
{ .start = 0x00a01f44, .end = 0x00a01ffc },
{ .start = 0x00a02000, .end = 0x00a02048 },
{ .start = 0x00a02068, .end = 0x00a020f0 },
{ .start = 0x00a02100, .end = 0x00a02118 },
{ .start = 0x00a02140, .end = 0x00a0214c },
{ .start = 0x00a02168, .end = 0x00a0218c },
{ .start = 0x00a021c0, .end = 0x00a021c0 },
{ .start = 0x00a02400, .end = 0x00a02410 },
{ .start = 0x00a02418, .end = 0x00a02420 },
{ .start = 0x00a02428, .end = 0x00a0242c },
{ .start = 0x00a02434, .end = 0x00a02434 },
{ .start = 0x00a02440, .end = 0x00a02460 },
{ .start = 0x00a02468, .end = 0x00a024b0 },
{ .start = 0x00a024c8, .end = 0x00a024cc },
{ .start = 0x00a02500, .end = 0x00a02504 },
{ .start = 0x00a0250c, .end = 0x00a02510 },
{ .start = 0x00a02540, .end = 0x00a02554 },
{ .start = 0x00a02580, .end = 0x00a025f4 },
{ .start = 0x00a02600, .end = 0x00a0260c },
{ .start = 0x00a02648, .end = 0x00a02650 },
{ .start = 0x00a02680, .end = 0x00a02680 },
{ .start = 0x00a026c0, .end = 0x00a026d0 },
{ .start = 0x00a02700, .end = 0x00a0270c },
{ .start = 0x00a02804, .end = 0x00a02804 },
{ .start = 0x00a02818, .end = 0x00a0281c },
{ .start = 0x00a02c00, .end = 0x00a02db4 },
{ .start = 0x00a02df4, .end = 0x00a02fb0 },
{ .start = 0x00a03000, .end = 0x00a03014 },
{ .start = 0x00a0301c, .end = 0x00a0302c },
{ .start = 0x00a03034, .end = 0x00a03038 },
{ .start = 0x00a03040, .end = 0x00a03048 },
{ .start = 0x00a03060, .end = 0x00a03068 },
{ .start = 0x00a03070, .end = 0x00a03074 },
{ .start = 0x00a0307c, .end = 0x00a0307c },
{ .start = 0x00a03080, .end = 0x00a03084 },
{ .start = 0x00a0308c, .end = 0x00a03090 },
{ .start = 0x00a03098, .end = 0x00a03098 },
{ .start = 0x00a030a0, .end = 0x00a030a0 },
{ .start = 0x00a030a8, .end = 0x00a030b4 },
{ .start = 0x00a030bc, .end = 0x00a030bc },
{ .start = 0x00a030c0, .end = 0x00a0312c },
{ .start = 0x00a03c00, .end = 0x00a03c5c },
{ .start = 0x00a04400, .end = 0x00a04454 },
{ .start = 0x00a04460, .end = 0x00a04474 },
{ .start = 0x00a044c0, .end = 0x00a044ec },
{ .start = 0x00a04500, .end = 0x00a04504 },
{ .start = 0x00a04510, .end = 0x00a04538 },
{ .start = 0x00a04540, .end = 0x00a04548 },
{ .start = 0x00a04560, .end = 0x00a0457c },
{ .start = 0x00a04590, .end = 0x00a04598 },
{ .start = 0x00a045c0, .end = 0x00a045f4 },
{ .start = 0x00a44000, .end = 0x00a7bf80 },
};
static u32 iwl_dump_prph(struct iwl_trans *trans,
struct iwl_fw_error_dump_data **data)
{
struct iwl_fw_error_dump_prph *prph;
unsigned long flags;
u32 prph_len = 0, i;
if (!iwl_trans_grab_nic_access(trans, &flags))
return 0;
for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr); i++) {
/* The range includes both boundaries */
int num_bytes_in_chunk = iwl_prph_dump_addr[i].end -
iwl_prph_dump_addr[i].start + 4;
int reg;
__le32 *val;
prph_len += sizeof(**data) + sizeof(*prph) + num_bytes_in_chunk;
(*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PRPH);
(*data)->len = cpu_to_le32(sizeof(*prph) +
num_bytes_in_chunk);
prph = (void *)(*data)->data;
prph->prph_start = cpu_to_le32(iwl_prph_dump_addr[i].start);
val = (void *)prph->data;
for (reg = iwl_prph_dump_addr[i].start;
reg <= iwl_prph_dump_addr[i].end;
reg += 4)
*val++ = cpu_to_le32(iwl_read_prph_no_grab(trans,
reg));
*data = iwl_fw_error_next_data(*data);
}
iwl_trans_release_nic_access(trans, &flags);
return prph_len;
}
void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
{
struct iwl_fw_error_dump_file *dump_file;
struct iwl_fw_error_dump_data *dump_data;
struct iwl_fw_error_dump_info *dump_info;
struct iwl_fw_error_dump_mem *dump_mem;
struct iwl_fw_error_dump_trigger_desc *dump_trig;
struct iwl_mvm_dump_ptrs *fw_error_dump;
u32 sram_len, sram_ofs;
u32 file_len, fifo_data_len = 0, prph_len = 0, radio_len = 0;
u32 smem_len = mvm->cfg->smem_len;
u32 sram2_len = mvm->cfg->dccm2_len;
bool monitor_dump_only = false;
int i;
if (!IWL_MVM_COLLECT_FW_ERR_DUMP &&
!mvm->trans->dbg_dest_tlv)
return;
lockdep_assert_held(&mvm->mutex);
/* there's no point in fw dump if the bus is dead */
if (test_bit(STATUS_TRANS_DEAD, &mvm->trans->status)) {
IWL_ERR(mvm, "Skip fw error dump since bus is dead\n");
goto out;
}
if (mvm->fw_dump_trig &&
mvm->fw_dump_trig->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)
monitor_dump_only = true;
fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
if (!fw_error_dump)
goto out;
/* SRAM - include stack CCM if driver knows the values for it */
if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
const struct fw_img *img;
img = &mvm->fw->img[mvm->cur_ucode];
sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
} else {
sram_ofs = mvm->cfg->dccm_offset;
sram_len = mvm->cfg->dccm_len;
}
/* reading RXF/TXF sizes */
if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
fifo_data_len = 0;
/* Count RXF size */
for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
if (!mem_cfg->rxfifo_size[i])
continue;
/* Add header info */
fifo_data_len += mem_cfg->rxfifo_size[i] +
sizeof(*dump_data) +
sizeof(struct iwl_fw_error_dump_fifo);
}
for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
if (!mem_cfg->txfifo_size[i])
continue;
/* Add header info */
fifo_data_len += mem_cfg->txfifo_size[i] +
sizeof(*dump_data) +
sizeof(struct iwl_fw_error_dump_fifo);
}
/* Make room for PRPH registers */
for (i = 0; i < ARRAY_SIZE(iwl_prph_dump_addr); i++) {
/* The range includes both boundaries */
int num_bytes_in_chunk = iwl_prph_dump_addr[i].end -
iwl_prph_dump_addr[i].start + 4;
prph_len += sizeof(*dump_data) +
sizeof(struct iwl_fw_error_dump_prph) +
num_bytes_in_chunk;
}
if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000)
radio_len = sizeof(*dump_data) + RADIO_REG_MAX_READ;
}
file_len = sizeof(*dump_file) +
sizeof(*dump_data) * 2 +
sram_len + sizeof(*dump_mem) +
fifo_data_len +
prph_len +
radio_len +
sizeof(*dump_info);
/* Make room for the SMEM, if it exists */
if (smem_len)
file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
/* Make room for the secondary SRAM, if it exists */
if (sram2_len)
file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
/* Make room for fw's virtual image pages, if it exists */
if (mvm->fw->img[mvm->cur_ucode].paging_mem_size &&
mvm->fw_paging_db[0].fw_paging_block)
file_len += mvm->num_of_paging_blk *
(sizeof(*dump_data) +
sizeof(struct iwl_fw_error_dump_paging) +
PAGING_BLOCK_SIZE);
/* If we only want a monitor dump, reset the file length */
if (monitor_dump_only) {
file_len = sizeof(*dump_file) + sizeof(*dump_data) +
sizeof(*dump_info);
}
/*
* In 8000 HW family B-step include the ICCM (which resides separately)
*/
if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
IWL8260_ICCM_LEN;
if (mvm->fw_dump_desc)
file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
mvm->fw_dump_desc->len;
dump_file = vzalloc(file_len);
if (!dump_file) {
kfree(fw_error_dump);
goto out;
}
fw_error_dump->op_mode_ptr = dump_file;
dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
dump_data = (void *)dump_file->data;
dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
dump_data->len = cpu_to_le32(sizeof(*dump_info));
dump_info = (void *)dump_data->data;
dump_info->device_family =
mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
sizeof(dump_info->fw_human_readable));
strncpy(dump_info->dev_human_readable, mvm->cfg->name,
sizeof(dump_info->dev_human_readable));
strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
sizeof(dump_info->bus_human_readable));
dump_data = iwl_fw_error_next_data(dump_data);
/* We only dump the FIFOs if the FW is in error state */
if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
iwl_mvm_dump_fifos(mvm, &dump_data);
if (radio_len)
iwl_mvm_read_radio_reg(mvm, &dump_data);
}
if (mvm->fw_dump_desc) {
dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
mvm->fw_dump_desc->len);
dump_trig = (void *)dump_data->data;
memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
sizeof(*dump_trig) + mvm->fw_dump_desc->len);
dump_data = iwl_fw_error_next_data(dump_data);
}
/* In case we only want monitor dump, skip to dump trasport data */
if (monitor_dump_only)
goto dump_trans_data;
dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
dump_mem = (void *)dump_data->data;
dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
dump_mem->offset = cpu_to_le32(sram_ofs);
iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
sram_len);
if (smem_len) {
dump_data = iwl_fw_error_next_data(dump_data);
dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
dump_mem = (void *)dump_data->data;
dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
dump_mem->data, smem_len);
}
if (sram2_len) {
dump_data = iwl_fw_error_next_data(dump_data);
dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
dump_mem = (void *)dump_data->data;
dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
dump_mem->data, sram2_len);
}
if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
dump_data = iwl_fw_error_next_data(dump_data);
dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
sizeof(*dump_mem));
dump_mem = (void *)dump_data->data;
dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
dump_mem->data, IWL8260_ICCM_LEN);
}
/* Dump fw's virtual image */
if (mvm->fw->img[mvm->cur_ucode].paging_mem_size &&
mvm->fw_paging_db[0].fw_paging_block) {
for (i = 1; i < mvm->num_of_paging_blk + 1; i++) {
struct iwl_fw_error_dump_paging *paging;
struct page *pages =
mvm->fw_paging_db[i].fw_paging_block;
dump_data = iwl_fw_error_next_data(dump_data);
dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING);
dump_data->len = cpu_to_le32(sizeof(*paging) +
PAGING_BLOCK_SIZE);
paging = (void *)dump_data->data;
paging->index = cpu_to_le32(i);
memcpy(paging->data, page_address(pages),
PAGING_BLOCK_SIZE);
}
}
dump_data = iwl_fw_error_next_data(dump_data);
if (prph_len)
iwl_dump_prph(mvm->trans, &dump_data);
dump_trans_data:
fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans,
mvm->fw_dump_trig);
fw_error_dump->op_mode_len = file_len;
if (fw_error_dump->trans_ptr)
file_len += fw_error_dump->trans_ptr->len;
dump_file->file_len = cpu_to_le32(file_len);
dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
out:
iwl_mvm_free_fw_dump_desc(mvm);
mvm->fw_dump_trig = NULL;
clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
}
const struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
.trig_desc = {
.type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
},
};
int iwl_mvm_fw_dbg_collect_desc(struct iwl_mvm *mvm,
const struct iwl_mvm_dump_desc *desc,
const struct iwl_fw_dbg_trigger_tlv *trigger)
{
unsigned int delay = 0;
if (trigger)
delay = msecs_to_jiffies(le32_to_cpu(trigger->stop_delay));
if (test_and_set_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status))
return -EBUSY;
if (WARN_ON(mvm->fw_dump_desc))
iwl_mvm_free_fw_dump_desc(mvm);
IWL_WARN(mvm, "Collecting data: trigger %d fired.\n",
le32_to_cpu(desc->trig_desc.type));
mvm->fw_dump_desc = desc;
mvm->fw_dump_trig = trigger;
queue_delayed_work(system_wq, &mvm->fw_dump_wk, delay);
return 0;
}
int iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm, enum iwl_fw_dbg_trigger trig,
const char *str, size_t len,
const struct iwl_fw_dbg_trigger_tlv *trigger)
{
struct iwl_mvm_dump_desc *desc;
desc = kzalloc(sizeof(*desc) + len, GFP_ATOMIC);
if (!desc)
return -ENOMEM;
desc->len = len;
desc->trig_desc.type = cpu_to_le32(trig);
memcpy(desc->trig_desc.data, str, len);
return iwl_mvm_fw_dbg_collect_desc(mvm, desc, trigger);
}
int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm,
struct iwl_fw_dbg_trigger_tlv *trigger,
const char *fmt, ...)
{
u16 occurrences = le16_to_cpu(trigger->occurrences);
int ret, len = 0;
char buf[64];
if (!occurrences)
return 0;
if (fmt) {
va_list ap;
buf[sizeof(buf) - 1] = '\0';
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
/* check for truncation */
if (WARN_ON_ONCE(buf[sizeof(buf) - 1]))
buf[sizeof(buf) - 1] = '\0';
len = strlen(buf) + 1;
}
ret = iwl_mvm_fw_dbg_collect(mvm, le32_to_cpu(trigger->id), buf, len,
trigger);
if (ret)
return ret;
trigger->occurrences = cpu_to_le16(occurrences - 1);
return 0;
}
static inline void iwl_mvm_restart_early_start(struct iwl_mvm *mvm)
{
if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000)
iwl_clear_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
else
iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 1);
}
int iwl_mvm_start_fw_dbg_conf(struct iwl_mvm *mvm, u8 conf_id)
{
u8 *ptr;
int ret;
int i;
if (WARN_ONCE(conf_id >= ARRAY_SIZE(mvm->fw->dbg_conf_tlv),
"Invalid configuration %d\n", conf_id))
return -EINVAL;
/* EARLY START - firmware's configuration is hard coded */
if ((!mvm->fw->dbg_conf_tlv[conf_id] ||
!mvm->fw->dbg_conf_tlv[conf_id]->num_of_hcmds) &&
conf_id == FW_DBG_START_FROM_ALIVE) {
iwl_mvm_restart_early_start(mvm);
return 0;
}
if (!mvm->fw->dbg_conf_tlv[conf_id])
return -EINVAL;
if (mvm->fw_dbg_conf != FW_DBG_INVALID)
IWL_WARN(mvm, "FW already configured (%d) - re-configuring\n",
mvm->fw_dbg_conf);
/* Send all HCMDs for configuring the FW debug */
ptr = (void *)&mvm->fw->dbg_conf_tlv[conf_id]->hcmd;
for (i = 0; i < mvm->fw->dbg_conf_tlv[conf_id]->num_of_hcmds; i++) {
struct iwl_fw_dbg_conf_hcmd *cmd = (void *)ptr;
ret = iwl_mvm_send_cmd_pdu(mvm, cmd->id, 0,
le16_to_cpu(cmd->len), cmd->data);
if (ret)
return ret;
ptr += sizeof(*cmd);
ptr += le16_to_cpu(cmd->len);
}
mvm->fw_dbg_conf = conf_id;
return ret;
}