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wifi: iwlwifi: pcie: print function scratch before writing

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We may want to know the value of this register for certain
debug scenarios before we overwrite it, it indicates which
parts of the chip have recently been reset.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20240729201718.737e5f8bb8df.Ia3f3637ac4a0fb4b35ffd652f92eb75de652ee12@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2024-07-29 20:20:06 +03:00
parent 4f1591d292
commit 70d400ba7f
1 changed files with 2 additions and 0 deletions
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2
drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c
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@ -526,6 +526,8 @@ int iwl_trans_pcie_gen2_start_fw(struct iwl_trans *trans,
keep_ram_busy = !iwl_pcie_set_ltr(trans);
if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) {
IWL_DEBUG_POWER(trans, "function scratch register value is 0x%08x\n",
iwl_read32(trans, CSR_FUNC_SCRATCH));
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);