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| author | Ido Yariv <ido@wizery.com> | 2016-06-14 10:27:57 -0400 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2016-07-06 09:39:16 +0300 |
| commit | 54f315cb082bf98290575e858d1e0274bb0eebe0 (patch) | |
| tree | 95f5f102f3997c010e31d03719b174786e14dc5b /drivers/net/wireless/intel | |
| parent | da2830acf15aab9cb2c376b74463d6d6ecc18716 (diff) | |
| download | linux-54f315cb082bf98290575e858d1e0274bb0eebe0.tar.gz linux-54f315cb082bf98290575e858d1e0274bb0eebe0.tar.bz2 linux-54f315cb082bf98290575e858d1e0274bb0eebe0.zip | |
iwlwifi: pcie: Enable MSI mode when using MSI interrupts
On some of the chipsets MSI & INTA interrupts are disabled by default in
the HW registers, and need to be explicitly enabled to be used.
In case MSI-X isn't used, make sure MSI mode is enabled by setting
the relevant HW register.
Signed-off-by: Ido Yariv <idox.yariv@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/iwl-prph.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 6 |
2 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-prph.h b/drivers/net/wireless/intel/iwlwifi/iwl-prph.h index 6c1d20ded04b..459bf736fd5b 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-prph.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-prph.h @@ -417,5 +417,6 @@ enum { }; #define UREG_CHICK (0xA05C00) +#define UREG_CHICK_MSI_ENABLE BIT(24) #define UREG_CHICK_MSIX_ENABLE BIT(25) #endif /* __iwl_prph_h__ */ diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index ac623c3e3f24..f5ace924e76a 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -1396,8 +1396,12 @@ static void iwl_pcie_init_msix(struct iwl_trans_pcie *trans_pcie) max_rx_vector = trans_pcie->allocated_vector - 1; - if (!trans_pcie->msix_enabled) + if (!trans_pcie->msix_enabled) { + if (trans->cfg->mq_rx_supported) + iwl_write_prph(trans, UREG_CHICK, + UREG_CHICK_MSI_ENABLE); return; + } iwl_write_prph(trans, UREG_CHICK, UREG_CHICK_MSIX_ENABLE); |