Commit 8ecc3928 authored by Johannes Berg's avatar Johannes Berg Committed by Miri Korenblit
Browse files

wifi: iwlwifi: pcie: initiate TOP reset if requested 



At load time, the firmware may request a TOP reset via
bit 6 in the IPC status register. Handle that and set
TOP reset in that case. Since the init will be retried,
there's no need to do anything else.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarMiri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250609211928.0875d5f7e066.I62f14008d89416bc4a3a1056e06762561a7fac57@changeid
parent c8a00a6e

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

+1 −0
Original line number Diff line number Diff line
@@ -113,6 +113,7 @@ 
#define CSR_IPC_STATE_RESET_SW_READY		1

#define CSR_IPC_STATE_RESET_TOP_READY		2

#define CSR_IPC_STATE_RESET_TOP_FOLLOWER	3

#define CSR_IPC_STATE_TOP_RESET_REQ		BIT(6)



#define CSR_IPC_SLEEP_CONTROL	(CSR_BASE + 0x114)

#define CSR_IPC_SLEEP_CONTROL_SUSPEND	0x3

drivers/net/wireless/intel/iwlwifi/pcie/gen1_2/rx.c

+9 −0
Original line number Diff line number Diff line
@@ -1700,6 +1700,15 @@ static void iwl_pcie_irq_handle_error(struct iwl_trans *trans) 
		timer_delete(&trans_pcie->txqs.txq[i]->stuck_timer);

	}



	if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_SC) {

		u32 val = iwl_read32(trans, CSR_IPC_STATE);



		if (val & CSR_IPC_STATE_TOP_RESET_REQ) {

			IWL_ERR(trans, "FW requested TOP reset for FSEQ\n");

			trans->do_top_reset = 1;

		}

	}



	/* The STATUS_FW_ERROR bit is set in this function. This must happen

	 * before we wake up the command caller, to ensure a proper cleanup. */

	iwl_trans_fw_error(trans, IWL_ERR_TYPE_IRQ);