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Commit 82ea7966 authored by Sara Sharon's avatar Sara Sharon Committed by Luca Coelho
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iwlwifi: pcie: use WFPM_GP for debugging D3 flows 



This register is helpful for debugging D3 issues.
Driver turns all bits on, and then on exit reads the
updated value there.

Signed-off-by: default avatarSara Sharon <sara.sharon@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent de74c455

drivers/net/wireless/intel/iwlwifi/iwl-prph.h

+1 −0
Original line number Diff line number Diff line
@@ -378,6 +378,7 @@ 
#define RADIO_REG_SYS_MANUAL_DFT_0	0xAD4078

#define RFIC_REG_RD			0xAD0470

#define WFPM_CTRL_REG			0xA03030

#define WFPM_GP2			0xA030B4

enum {

	ENABLE_WFPM = BIT(31),

	WFPM_AUX_CTL_AUX_IF_MAC_OWNER_MSK	= 0x80000000,

drivers/net/wireless/intel/iwlwifi/pcie/trans.c

+13 −0
Original line number Diff line number Diff line
@@ -1047,6 +1047,16 @@ static int iwl_pcie_load_given_ucode_8000(struct iwl_trans *trans, 
	if (ret)

		return ret;



	IWL_DEBUG_POWER(trans, "Original WFPM value = 0x%08X\n",

			iwl_read_prph(trans, WFPM_GP2));



	/*

	 * Set default value. On resume reading the values that were

	 * zeored can provide debug data on the resume flow.

	 * This is for debugging only and has no functional impact.

	 */

	iwl_write_prph(trans, WFPM_GP2, 0x01010101);



	/* configure the ucode to be ready to get the secured image */

	/* release CPU reset */

	iwl_write_prph(trans, RELEASE_CPU_RESET, RELEASE_CPU_RESET_BIT);
@@ -1527,6 +1537,9 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans, 
		}

	}



	IWL_DEBUG_POWER(trans, "WFPM value upon resume = 0x%08X\n",

			iwl_read_prph(trans, WFPM_GP2));



	val = iwl_read32(trans, CSR_RESET);

	if (val & CSR_RESET_REG_FLAG_NEVO_RESET)

		*status = IWL_D3_STATUS_RESET;