diff options
| author | Matti Gottlieb <matti.gottlieb@intel.com> | 2021-08-26 22:47:48 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2021-10-22 10:40:58 +0300 |
| commit | 595c230b95130b2bdb1e210f1c4e70faf796764c (patch) | |
| tree | 8679dc17f0868a6bd3ea3a9a834f3c5e4df884da /drivers/net/wireless | |
| parent | af82c00736b4d1ef6a77b0467a1065916e0b15bf (diff) | |
iwlwifi: Start scratch debug register for Bz family
Start scratch debug register for Bz family.
This register is used for FW debug, and the driver
should start this register with a fixed value, during
init, and upon an error, should read it, and add it to
the dump.
Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210826224715.609ad58a49f3.I05c351233601ecc51dddfa5df69ace292216eb95@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/fw/dump.c | 7 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-csr.h | 7 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c | 8 |
3 files changed, 19 insertions, 3 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dump.c b/drivers/net/wireless/intel/iwlwifi/fw/dump.c index a1842205e86a..1f9cf4e40547 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dump.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dump.c @@ -328,6 +328,13 @@ static void iwl_fwrt_dump_tcm_error_log(struct iwl_fw_runtime *fwrt) for (i = 0; i < ARRAY_SIZE(table.sw_status); i++) IWL_ERR(fwrt, "0x%08X | tcm SW status[%d]\n", table.sw_status[i], i); + + if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) { + u32 scratch = iwl_read32(trans, CSR_FUNC_SCRATCH); + + IWL_ERR(fwrt, "Function Scratch status:\n"); + IWL_ERR(fwrt, "0x%08X | Func Scratch\n", scratch); + } } static void iwl_fwrt_dump_iml_error_log(struct iwl_fw_runtime *fwrt) diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h index cf796403c45c..2c4d70fb32fa 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h @@ -34,6 +34,7 @@ #define CSR_GPIO_IN (CSR_BASE+0x018) /* read external chip pins */ #define CSR_RESET (CSR_BASE+0x020) /* busmaster enable, NMI, etc*/ #define CSR_GP_CNTRL (CSR_BASE+0x024) +#define CSR_FUNC_SCRATCH (CSR_BASE+0x02c) /* Scratch register - used for FW dbg */ /* 2nd byte of CSR_INT_COALESCING, not accessible via iwl_write32()! */ #define CSR_INT_PERIODIC_REG (CSR_BASE+0x005) @@ -135,6 +136,12 @@ #define CSR_DBG_HPET_MEM_REG (CSR_BASE+0x240) #define CSR_DBG_LINK_PWR_MGMT_REG (CSR_BASE+0x250) +/* + * Scratch register initial configuration - this is set on init, and read + * during a error FW error. + */ +#define CSR_FUNC_SCRATCH_INIT_VALUE (0x01010101) + /* Bits for CSR_HW_IF_CONFIG_REG */ #define CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH (0x00000003) #define CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP (0x0000000C) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c index bf0c32a74ca4..53bc5b7d8d5c 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c @@ -466,13 +466,15 @@ int iwl_trans_pcie_gen2_start_fw(struct iwl_trans *trans, iwl_pcie_set_ltr(trans); - if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) + if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) { + iwl_write32(trans, CSR_FUNC_SCRATCH, CSR_FUNC_SCRATCH_INIT_VALUE); iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_ROM_START); - else if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) + } else if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { iwl_write_umac_prph(trans, UREG_CPU_INIT_RUN, 1); - else + } else { iwl_write_prph(trans, UREG_CPU_INIT_RUN, 1); + } /* re-check RF-Kill state since we may have missed the interrupt */ hw_rfkill = iwl_pcie_check_hw_rf_kill(trans); |