diff mbox series

[iwlwifi-next,11/15] wifi: iwlwifi: pcie: initiate TOP reset if requested

Message ID 20250609211928.0875d5f7e066.I62f14008d89416bc4a3a1056e06762561a7fac57@changeid
State New
Headers show
Series [iwlwifi-next,01/15] wifi: iwlwifi: mld: remove unneeded compilations | expand

Commit Message

Korenblit, Miriam Rachel June 9, 2025, 6:21 p.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

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: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/iwl-csr.h        | 1 +
 drivers/net/wireless/intel/iwlwifi/pcie/gen1_2/rx.c | 9 +++++++++
 2 files changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h
index 0fd452cb94ae..f3fa37fee2e4 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h
@@ -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
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/gen1_2/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/gen1_2/rx.c
index 7b56eb78663c..0c73b1fe3645 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/gen1_2/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/gen1_2/rx.c
@@ -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);