diff options
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-csr.h | 10 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c | 20 |
2 files changed, 30 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h index cb9e8e189a1a..1d48c7d7fffd 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-csr.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-csr.h @@ -147,6 +147,16 @@ #define CSR_MAC_SHADOW_REG_CTL2 (CSR_BASE + 0x0AC) #define CSR_MAC_SHADOW_REG_CTL2_RX_WAKE 0xFFFF +/* LTR control (since IWL_DEVICE_FAMILY_22000) */ +#define CSR_LTR_LONG_VAL_AD (CSR_BASE + 0x0D4) +#define CSR_LTR_LONG_VAL_AD_NO_SNOOP_REQ 0x80000000 +#define CSR_LTR_LONG_VAL_AD_NO_SNOOP_SCALE 0x1c000000 +#define CSR_LTR_LONG_VAL_AD_NO_SNOOP_VAL 0x03ff0000 +#define CSR_LTR_LONG_VAL_AD_SNOOP_REQ 0x00008000 +#define CSR_LTR_LONG_VAL_AD_SNOOP_SCALE 0x00001c00 +#define CSR_LTR_LONG_VAL_AD_SNOOP_VAL 0x000003ff +#define CSR_LTR_LONG_VAL_AD_SCALE_USEC 2 + /* GIO Chicken Bits (PCI Express bus link power management) */ #define CSR_GIO_CHICKEN_BITS (CSR_BASE+0x100) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c index a0352fa873d9..5512e3c630c3 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c @@ -252,6 +252,26 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans, iwl_set_bit(trans, CSR_CTXT_INFO_BOOT_CTRL, CSR_AUTO_FUNC_BOOT_ENA); + + if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_AX210) { + /* + * The firmware initializes this again later (to a smaller + * value), but for the boot process initialize the LTR to + * ~250 usec. + */ + u32 val = CSR_LTR_LONG_VAL_AD_NO_SNOOP_REQ | + u32_encode_bits(CSR_LTR_LONG_VAL_AD_SCALE_USEC, + CSR_LTR_LONG_VAL_AD_NO_SNOOP_SCALE) | + u32_encode_bits(250, + CSR_LTR_LONG_VAL_AD_NO_SNOOP_VAL) | + CSR_LTR_LONG_VAL_AD_SNOOP_REQ | + u32_encode_bits(CSR_LTR_LONG_VAL_AD_SCALE_USEC, + CSR_LTR_LONG_VAL_AD_SNOOP_SCALE) | + u32_encode_bits(250, CSR_LTR_LONG_VAL_AD_SNOOP_VAL); + + iwl_write32(trans, CSR_LTR_LONG_VAL_AD, val); + } + if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) iwl_write_umac_prph(trans, UREG_CPU_INIT_RUN, 1); else |