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iwlwifi: dump CSRs to fw-error-dump

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Add the Control Status Registers to the firmware error dump
infrastructure.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Emmanuel Grumbach 2014-07-08 19:44:25 +03:00
parent 67c65f2cf7
commit 473ad712a4
2 changed files with 34 additions and 3 deletions
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4
drivers/net/wireless/iwlwifi/iwl-fw-error-dump.h
View file

@ -70,7 +70,7 @@
/**
* enum iwl_fw_error_dump_type - types of data in the dump file
* @IWL_FW_ERROR_DUMP_SRAM:
* @IWL_FW_ERROR_DUMP_REG:
* @IWL_FW_ERROR_DUMP_CSR: Control Status Registers - from offset 0
* @IWL_FW_ERROR_DUMP_RXF:
* @IWL_FW_ERROR_DUMP_TXCMD: last TX command data, structured as
* &struct iwl_fw_error_dump_txcmd packets
@ -82,7 +82,7 @@
*/
enum iwl_fw_error_dump_type {
IWL_FW_ERROR_DUMP_SRAM = 0,
IWL_FW_ERROR_DUMP_REG = 1,
IWL_FW_ERROR_DUMP_CSR = 1,
IWL_FW_ERROR_DUMP_RXF = 2,
IWL_FW_ERROR_DUMP_TXCMD = 3,
IWL_FW_ERROR_DUMP_DEV_FW_INFO = 4,

33
drivers/net/wireless/iwlwifi/pcie/trans.c
View file

@ -1912,6 +1912,27 @@ static u32 iwl_trans_pcie_dump_prph(struct iwl_trans *trans,
return prph_len;
}
#define IWL_CSR_TO_DUMP (0x250)
static u32 iwl_trans_pcie_dump_csr(struct iwl_trans *trans,
struct iwl_fw_error_dump_data **data)
{
u32 csr_len = sizeof(**data) + IWL_CSR_TO_DUMP;
__le32 *val;
int i;
(*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_CSR);
(*data)->len = cpu_to_le32(IWL_CSR_TO_DUMP);
val = (void *)(*data)->data;
for (i = 0; i < IWL_CSR_TO_DUMP; i += 4)
*val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i));
*data = iwl_fw_error_next_data(*data);
return csr_len;
}
static
struct iwl_trans_dump_data *iwl_trans_pcie_dump_data(struct iwl_trans *trans)
{
@ -1923,9 +1944,17 @@ struct iwl_trans_dump_data *iwl_trans_pcie_dump_data(struct iwl_trans *trans)
u32 len;
int i, ptr;
len = sizeof(*dump_data) + sizeof(*data) +
/* transport dump header */
len = sizeof(*dump_data);
/* host commands */
len += sizeof(*data) +
cmdq->q.n_window * (sizeof(*txcmd) + TFD_MAX_PAYLOAD_SIZE);
/* CSR registers */
len += sizeof(*data) + IWL_CSR_TO_DUMP;
/* 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 -
@ -1935,6 +1964,7 @@ struct iwl_trans_dump_data *iwl_trans_pcie_dump_data(struct iwl_trans *trans)
num_bytes_in_chunk;
}
/* FW monitor */
if (trans_pcie->fw_mon_page)
len += sizeof(*data) + sizeof(struct iwl_fw_error_dump_fw_mon) +
trans_pcie->fw_mon_size;
@ -1973,6 +2003,7 @@ struct iwl_trans_dump_data *iwl_trans_pcie_dump_data(struct iwl_trans *trans)
data = iwl_fw_error_next_data(data);
len += iwl_trans_pcie_dump_prph(trans, &data);
len += iwl_trans_pcie_dump_csr(trans, &data);
/* data is already pointing to the next section */
if (trans_pcie->fw_mon_page) {