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author | 2022-01-29 13:16:19 +0200 | |
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committer | 2022-02-18 10:40:51 +0200 | |
commit | c0941ace9a134bd1a9c2c09afad4e6bf0066c1e3 (patch) | |
tree | a22d3d98ec7a3f87ae722f4832248a819ead7b72 /drivers/net/wireless/intel/iwlwifi/fw | |
parent | iwlwifi: yoyo: fix DBGC allocation flow (diff) | |
download | linux-c0941ace9a134bd1a9c2c09afad4e6bf0066c1e3.tar.gz linux-c0941ace9a134bd1a9c2c09afad4e6bf0066c1e3.tar.bz2 linux-c0941ace9a134bd1a9c2c09afad4e6bf0066c1e3.zip |
iwlwifi: yoyo: add IMR DRAM dump support
Support debug collection of the platform IMR memory region,
where data is copied by FW during d3 state
Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220129105618.715f04ecc635.Ib89a6caa06c1324c1c0dd3f9f4cf7407f2857155@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/fw')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 97 |
1 files changed, 94 insertions, 3 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c index 101d9085e835..d3e1c89d9be7 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -12,7 +12,7 @@ #include "iwl-io.h" #include "iwl-prph.h" #include "iwl-csr.h" - +#include "iwl-fh.h" /** * struct iwl_fw_dump_ptrs - set of pointers needed for the fw-error-dump * @@ -1598,6 +1598,33 @@ static int iwl_dump_ini_fw_pkt_iter(struct iwl_fw_runtime *fwrt, return sizeof(*range) + le32_to_cpu(range->range_data_size); } +static int iwl_dump_ini_imr_iter(struct iwl_fw_runtime *fwrt, + struct iwl_dump_ini_region_data *reg_data, + void *range_ptr, u32 range_len, int idx) +{ + /* read the IMR memory and DMA it to SRAM */ + struct iwl_fw_ini_error_dump_range *range = range_ptr; + u64 imr_curr_addr = fwrt->trans->dbg.imr_data.imr_curr_addr; + u32 imr_rem_bytes = fwrt->trans->dbg.imr_data.imr2sram_remainbyte; + u32 sram_addr = fwrt->trans->dbg.imr_data.sram_addr; + u32 sram_size = fwrt->trans->dbg.imr_data.sram_size; + u32 size_to_dump = (imr_rem_bytes > sram_size) ? sram_size : imr_rem_bytes; + + range->range_data_size = cpu_to_le32(size_to_dump); + if (iwl_trans_write_imr_mem(fwrt->trans, sram_addr, + imr_curr_addr, size_to_dump)) { + IWL_ERR(fwrt, "WRT_DEBUG: IMR Memory transfer failed\n"); + return -1; + } + + fwrt->trans->dbg.imr_data.imr_curr_addr = imr_curr_addr + size_to_dump; + fwrt->trans->dbg.imr_data.imr2sram_remainbyte -= size_to_dump; + + iwl_trans_read_mem_bytes(fwrt->trans, sram_addr, range->data, + size_to_dump); + return sizeof(*range) + le32_to_cpu(range->range_data_size); +} + static void * iwl_dump_ini_mem_fill_header(struct iwl_fw_runtime *fwrt, struct iwl_dump_ini_region_data *reg_data, @@ -1736,6 +1763,18 @@ iwl_dump_ini_special_mem_fill_header(struct iwl_fw_runtime *fwrt, return dump->data; } +static void * +iwl_dump_ini_imr_fill_header(struct iwl_fw_runtime *fwrt, + struct iwl_dump_ini_region_data *reg_data, + void *data, u32 data_len) +{ + struct iwl_fw_ini_error_dump *dump = data; + + dump->header.version = cpu_to_le32(IWL_INI_DUMP_VER); + + return dump->data; +} + static u32 iwl_dump_ini_mem_ranges(struct iwl_fw_runtime *fwrt, struct iwl_dump_ini_region_data *reg_data) { @@ -1795,6 +1834,26 @@ static u32 iwl_dump_ini_single_range(struct iwl_fw_runtime *fwrt, return 1; } +static u32 iwl_dump_ini_imr_ranges(struct iwl_fw_runtime *fwrt, + struct iwl_dump_ini_region_data *reg_data) +{ + /* range is total number of pages need to copied from + *IMR memory to SRAM and later from SRAM to DRAM + */ + u32 imr_enable = fwrt->trans->dbg.imr_data.imr_enable; + u32 imr_size = fwrt->trans->dbg.imr_data.imr_size; + u32 sram_size = fwrt->trans->dbg.imr_data.sram_size; + + if (imr_enable == 0 || imr_size == 0 || sram_size == 0) { + IWL_DEBUG_INFO(fwrt, + "WRT: Invalid imr data enable: %d, imr_size: %d, sram_size: %d\n", + imr_enable, imr_size, sram_size); + return 0; + } + + return((imr_size % sram_size) ? (imr_size / sram_size + 1) : (imr_size / sram_size)); +} + static u32 iwl_dump_ini_mem_get_size(struct iwl_fw_runtime *fwrt, struct iwl_dump_ini_region_data *reg_data) { @@ -1973,6 +2032,33 @@ iwl_dump_ini_fw_pkt_get_size(struct iwl_fw_runtime *fwrt, return size; } +static u32 +iwl_dump_ini_imr_get_size(struct iwl_fw_runtime *fwrt, + struct iwl_dump_ini_region_data *reg_data) +{ + u32 size = 0; + u32 ranges = 0; + u32 imr_enable = fwrt->trans->dbg.imr_data.imr_enable; + u32 imr_size = fwrt->trans->dbg.imr_data.imr_size; + u32 sram_size = fwrt->trans->dbg.imr_data.sram_size; + + if (imr_enable == 0 || imr_size == 0 || sram_size == 0) { + IWL_DEBUG_INFO(fwrt, + "WRT: Invalid imr data enable: %d, imr_size: %d, sram_size: %d\n", + imr_enable, imr_size, sram_size); + return size; + } + size = imr_size; + ranges = iwl_dump_ini_imr_ranges(fwrt, reg_data); + if (!size && !ranges) { + IWL_ERR(fwrt, "WRT: imr_size :=%d, ranges :=%d\n", size, ranges); + return 0; + } + size += sizeof(struct iwl_fw_ini_error_dump) + + ranges * sizeof(struct iwl_fw_ini_error_dump_range); + return size; +} + /** * struct iwl_dump_ini_mem_ops - ini memory dump operations * @get_num_of_ranges: returns the number of memory ranges in the region. @@ -2040,7 +2126,7 @@ static u32 iwl_dump_ini_mem(struct iwl_fw_runtime *fwrt, struct list_head *list, size = ops->get_size(fwrt, reg_data); if (size < sizeof(*header)) { - IWL_DEBUG_FW(fwrt, "WRT: size didn't include space for haeder\n"); + IWL_DEBUG_FW(fwrt, "WRT: size didn't include space for header\n"); return 0; } @@ -2295,7 +2381,12 @@ static const struct iwl_dump_ini_mem_ops iwl_dump_ini_region_ops[] = { .fill_mem_hdr = iwl_dump_ini_mem_fill_header, .fill_range = iwl_dump_ini_csr_iter, }, - [IWL_FW_INI_REGION_DRAM_IMR] = {}, + [IWL_FW_INI_REGION_DRAM_IMR] = { + .get_num_of_ranges = iwl_dump_ini_imr_ranges, + .get_size = iwl_dump_ini_imr_get_size, + .fill_mem_hdr = iwl_dump_ini_imr_fill_header, + .fill_range = iwl_dump_ini_imr_iter, + }, [IWL_FW_INI_REGION_PCI_IOSF_CONFIG] = { .get_num_of_ranges = iwl_dump_ini_mem_ranges, .get_size = iwl_dump_ini_mem_get_size, |