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iwlwifi: implement Bz NMI behaviour

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The method to NMI the firmware also changed in Bz devices,
implement the new logic.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802215208.c9bd2034dc05.I983c25caa09c3776c7640fff73fe739362ecc5b6@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg 2021-08-02 21:58:52 +03:00 • committed by Luca Coelho
parent 9ce041f596
commit 6c0795f1a5
2 changed files with 8 additions and 1 deletions
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4
drivers/net/wireless/intel/iwlwifi/iwl-csr.h
View file

@ -104,6 +104,10 @@
/* GIO Chicken Bits (PCI Express bus link power management) */
#define CSR_GIO_CHICKEN_BITS (CSR_BASE+0x100)
/* Doorbell NMI (since Bz) */
#define CSR_DOORBELL_VECTOR (CSR_BASE + 0x130)
#define CSR_DOORBELL_VECTOR_NMI BIT(1)
/* host chicken bits */
#define CSR_HOST_CHICKEN (CSR_BASE + 0x204)
#define CSR_HOST_CHICKEN_PM_IDLE_SRC_DIS_SB_PME BIT(19)

5
drivers/net/wireless/intel/iwlwifi/iwl-io.c
View file

@ -213,9 +213,12 @@ void iwl_force_nmi(struct iwl_trans *trans)
else if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210)
iwl_write_umac_prph(trans, UREG_NIC_SET_NMI_DRIVER,
UREG_NIC_SET_NMI_DRIVER_NMI_FROM_DRIVER);
else
else if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6,
UREG_DOORBELL_TO_ISR6_NMI_BIT);
else
iwl_write32(trans, CSR_DOORBELL_VECTOR,
CSR_DOORBELL_VECTOR_NMI);
}
IWL_EXPORT_SYMBOL(iwl_force_nmi);