From 906d4eb84408a4bfd63eef0de4f1bd5262f73ac0 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 9 Dec 2020 23:16:43 +0200 Subject: iwlwifi: support firmware reset handshake There are some races in the hardware that can possibly lead to a bus lockup later during a restart when we manage to kill the firmware at a bad time (while it's accessing the bus). To work around this, add support for a new handshake between firmware and driver to ensure that the firmware is in a well- known state before we kill it. Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20201209231352.7756fcc9865c.I13de65e0ffcb4186dd4c1a465f66df2e98c9a947@changeid Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/iwl-csr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/wireless/intel/iwlwifi/iwl-csr.h') diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h index 1ebb35f55758..fe0c03c8d390 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h @@ -583,6 +583,7 @@ enum msix_hw_int_causes { MSIX_HW_INT_CAUSES_REG_ALIVE = BIT(0), MSIX_HW_INT_CAUSES_REG_WAKEUP = BIT(1), MSIX_HW_INT_CAUSES_REG_IML = BIT(1), + MSIX_HW_INT_CAUSES_REG_RESET_DONE = BIT(2), MSIX_HW_INT_CAUSES_REG_CT_KILL = BIT(6), MSIX_HW_INT_CAUSES_REG_RF_KILL = BIT(7), MSIX_HW_INT_CAUSES_REG_PERIODIC = BIT(8), -- cgit