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author | Shahar S Matityahu <shahar.s.matityahu@intel.com> | 2019-01-27 11:22:21 +0200 |
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committer | Luca Coelho <luciano.coelho@intel.com> | 2019-02-20 20:48:01 +0200 |
commit | 8d7dea25ada762f68d9522fb070a7cf6935cf822 (patch) | |
tree | 3e80504ee19ec0ab022875f5dc156c29f0fac98e | |
parent | 1b64d58bd4cb60cd7b0251d8654e18e5b1539ef4 (diff) | |
download | linux-8d7dea25ada762f68d9522fb070a7cf6935cf822.tar.bz2 |
iwlwifi: dbg_ini: implement Rx fifos dump
Implement Rx fifos dump in the new dump mechanism.
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 133 | ||||
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/error-dump.h | 3 |
2 files changed, 134 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c index 744d831b4dbb..f119c49cd39c 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -1279,6 +1279,105 @@ out: return sizeof(*range) + le32_to_cpu(range->range_data_size); } +struct iwl_ini_rxf_data { + u32 fifo_num; + u32 size; + u32 offset; +}; + +static void iwl_ini_get_rxf_data(struct iwl_fw_runtime *fwrt, + struct iwl_fw_ini_region_cfg *reg, + struct iwl_ini_rxf_data *data) +{ + u32 fid1 = le32_to_cpu(reg->fifos.fid1); + u32 fid2 = le32_to_cpu(reg->fifos.fid2); + u32 fifo_idx; + + if (!data) + return; + + memset(data, 0, sizeof(*data)); + + if (WARN_ON_ONCE((fid1 && fid2) || (!fid1 && !fid2))) + return; + + fifo_idx = ffs(fid1) - 1; + if (fid1 && !WARN_ON_ONCE((~BIT(fifo_idx) & fid1) || + fifo_idx >= MAX_NUM_LMAC)) { + data->size = fwrt->smem_cfg.lmac[fifo_idx].rxfifo1_size; + data->fifo_num = fifo_idx; + return; + } + + fifo_idx = ffs(fid2) - 1; + if (fid2 && !WARN_ON_ONCE(fifo_idx != 0)) { + data->size = fwrt->smem_cfg.rxfifo2_size; + data->offset = RXF_DIFF_FROM_PREV; + /* use bit 31 to distinguish between umac and lmac rxf while + * parsing the dump + */ + data->fifo_num = fifo_idx | IWL_RXF_UMAC_BIT; + return; + } +} + +static int iwl_dump_ini_rxf_iter(struct iwl_fw_runtime *fwrt, + struct iwl_fw_ini_region_cfg *reg, + void *range_ptr, int idx) +{ + struct iwl_fw_ini_fifo_error_dump_range *range = range_ptr; + struct iwl_ini_rxf_data rxf_data; + u32 offs = le32_to_cpu(reg->offset), addr; + u32 registers_size = + le32_to_cpu(reg->fifos.num_of_registers) * sizeof(__le32); + __le32 *val = range->data; + unsigned long flags; + int i; + + iwl_ini_get_rxf_data(fwrt, reg, &rxf_data); + if (!rxf_data.size) + return -EIO; + + if (!iwl_trans_grab_nic_access(fwrt->trans, &flags)) + return -EBUSY; + + offs += rxf_data.offset; + + range->fifo_num = cpu_to_le32(rxf_data.fifo_num); + range->num_of_registers = reg->fifos.num_of_registers; + range->range_data_size = cpu_to_le32(rxf_data.size + registers_size); + + /* read rxf registers */ + for (i = 0; i < le32_to_cpu(reg->fifos.num_of_registers); i++) { + addr = le32_to_cpu(reg->start_addr[i]) + offs; + + *val++ = cpu_to_le32(iwl_read_prph_no_grab(fwrt->trans, addr)); + } + + if (reg->fifos.header_only) { + range->range_data_size = cpu_to_le32(registers_size); + goto out; + } + + /* Lock fence */ + iwl_write_prph_no_grab(fwrt->trans, RXF_SET_FENCE_MODE + offs, 0x1); + /* Set fence pointer to the same place like WR pointer */ + iwl_write_prph_no_grab(fwrt->trans, RXF_LD_WR2FENCE + offs, 0x1); + /* Set fence offset */ + iwl_write_prph_no_grab(fwrt->trans, RXF_LD_FENCE_OFFSET_ADDR + offs, + 0x0); + + /* Read FIFO */ + addr = RXF_FIFO_RD_FENCE_INC + offs; + for (i = 0; i < rxf_data.size; i += sizeof(__le32)) + *val++ = cpu_to_le32(iwl_read_prph_no_grab(fwrt->trans, addr)); + +out: + iwl_trans_release_nic_access(fwrt->trans, &flags); + + 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_fw_ini_region_cfg *reg, void *data) @@ -1362,6 +1461,15 @@ static u32 iwl_dump_ini_txf_ranges(struct iwl_fw_runtime *fwrt, return num_of_fifos; } +static u32 iwl_dump_ini_rxf_ranges(struct iwl_fw_runtime *fwrt, + struct iwl_fw_ini_region_cfg *reg) +{ + /* Each Rx fifo needs a different offset and therefore, it's + * region can contain only one fifo, i.e. 1 memory range. + */ + return 1; +} + static u32 iwl_dump_ini_mem_get_size(struct iwl_fw_runtime *fwrt, struct iwl_fw_ini_region_cfg *reg) { @@ -1433,6 +1541,23 @@ static u32 iwl_dump_ini_txf_get_size(struct iwl_fw_runtime *fwrt, return size; } +static u32 iwl_dump_ini_rxf_get_size(struct iwl_fw_runtime *fwrt, + struct iwl_fw_ini_region_cfg *reg) +{ + struct iwl_ini_rxf_data rx_data; + u32 size = sizeof(struct iwl_fw_ini_fifo_error_dump) + + sizeof(struct iwl_fw_ini_fifo_error_dump_range) + + le32_to_cpu(reg->fifos.num_of_registers) * sizeof(__le32); + + if (reg->fifos.header_only) + return size; + + iwl_ini_get_rxf_data(fwrt, reg, &rx_data); + size += rx_data.size; + + 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. @@ -1539,7 +1664,7 @@ static int iwl_fw_ini_get_trigger_len(struct iwl_fw_runtime *fwrt, size += hdr_len + iwl_dump_ini_txf_get_size(fwrt, reg); break; case IWL_FW_INI_REGION_RXF: - size += iwl_fw_rxf_len(fwrt, &fwrt->smem_cfg); + size += hdr_len + iwl_dump_ini_rxf_get_size(fwrt, reg); break; case IWL_FW_INI_REGION_PAGING: { size += hdr_len; @@ -1644,7 +1769,11 @@ static void iwl_fw_ini_dump_trigger(struct iwl_fw_runtime *fwrt, break; } case IWL_FW_INI_REGION_RXF: - iwl_fw_dump_rxf(fwrt, data); + ops.get_num_of_ranges = iwl_dump_ini_rxf_ranges; + ops.get_size = iwl_dump_ini_rxf_get_size; + ops.fill_mem_hdr = iwl_dump_ini_fifo_fill_header; + ops.fill_range = iwl_dump_ini_rxf_iter; + iwl_dump_ini_mem(fwrt, type, data, reg, &ops); break; case IWL_FW_INI_REGION_CSR: ops.get_num_of_ranges = iwl_dump_ini_mem_ranges; diff --git a/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h b/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h index 2cc4f13d0abb..9b5077bd46c3 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/error-dump.h @@ -308,6 +308,9 @@ struct iwl_fw_ini_error_dump { struct iwl_fw_ini_error_dump_range ranges[]; } __packed; +/* This bit is used to differentiate between lmac and umac rxf */ +#define IWL_RXF_UMAC_BIT BIT(31) + /** * struct iwl_fw_ini_fifo_error_dump_range - ini fifo range dump * @fifo_num: the fifo num. In case of rxf and umac rxf, set BIT(31) to |