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iwlwifi: mvm: Dump FW's virtual image in the case of a NIC error

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When paging is enabled the driver stores part of the FW's
image in the DRAM.

Dump FW's virtual image in the case of a NIC error.

Signed-off-by: Golan Ben-Ami <golan.ben.ami@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Matti Gottlieb 2015-07-20 17:55:51 +03:00 committed by Emmanuel Grumbach
parent e621c2282e
commit f0afea54ee
2 changed files with 43 additions and 0 deletions
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16
drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h
View File

@ -86,6 +86,8 @@
* Structured as &struct iwl_fw_error_dump_trigger_desc.
* @IWL_FW_ERROR_DUMP_RB: the content of an RB structured as
* &struct iwl_fw_error_dump_rb
* @IWL_FW_ERROR_PAGING: UMAC's image memory segments which were
* paged to the DRAM.
*/
enum iwl_fw_error_dump_type {
/* 0 is deprecated */
@ -100,6 +102,7 @@ enum iwl_fw_error_dump_type {
IWL_FW_ERROR_DUMP_MEM = 9,
IWL_FW_ERROR_DUMP_ERROR_INFO = 10,
IWL_FW_ERROR_DUMP_RB = 11,
IWL_FW_ERROR_DUMP_PAGING = 12,
IWL_FW_ERROR_DUMP_MAX,
};
@ -239,6 +242,19 @@ struct iwl_fw_error_dump_rb {
u8 data[];
};
/**
* struct iwl_fw_error_dump_paging - content of the UMAC's image page
* block on DRAM
* @index: the index of the page block
* @reserved:
* @data: the content of the page block
*/
struct iwl_fw_error_dump_paging {
__le32 index;
__le32 reserved;
u8 data[];
};
/**
* iwl_fw_error_next_data - advance fw error dump data pointer
* @data: previous data block

27
drivers/net/wireless/iwlwifi/mvm/mac80211.c
View File

@ -1192,6 +1192,13 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
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)
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) +
@ -1302,6 +1309,26 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
dump_mem->data, IWL8260_ICCM_LEN);
}
/* Dump fw's virtual image */
if (mvm->fw->img[mvm->cur_ucode].paging_mem_size) {
u32 i;
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_trans_data:
fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans,
mvm->fw_dump_trig);