diff options
| author | Wey-Yi Guy <wey-yi.w.guy@intel.com> | 2010-01-16 00:43:37 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-01-20 00:25:11 +0300 |
| commit | 2be76703a3afb281155894ac52d34f7f5d736633 (patch) | |
| tree | 2eccad07339ac4d116cde6d3d9c710ead048b42a /drivers | |
| parent | 937c397eb633b804d9a806d08c395ecfc42b1fec (diff) | |
| download | linux-2be76703a3afb281155894ac52d34f7f5d736633.tar.xz | |
iwlwifi: set interrupt coalescing timer range and default
For interrupt coalescing timer, the CSR_INT_COALESCING is an 8 bit
register in 32-usec unit, the range can go from 0x00 - 0xFF. set the
range and default timeout value for both calibration mode and operation mode.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.c | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 15 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-rx.c | 4 |
3 files changed, 19 insertions, 4 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 5b56307a3812..29eb7b4dc7d4 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -257,8 +257,8 @@ int iwl_hw_nic_init(struct iwl_priv *priv) spin_lock_irqsave(&priv->lock, flags); priv->cfg->ops->lib->apm_ops.init(priv); - /* Set interrupt coalescing timer to 512 usecs */ - iwl_write8(priv, CSR_INT_COALESCING, 512 / 32); + /* Set interrupt coalescing calibration timer to default (512 usecs) */ + iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF); spin_unlock_irqrestore(&priv->lock, flags); diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 63e45cd3f634..251eb737860c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -1011,6 +1011,21 @@ struct iwl_event_log { int wraps_more_count; }; +/* + * host interrupt timeout value + * used with setting interrupt coalescing timer + * the CSR_INT_COALESCING is an 8 bit register in 32-usec unit + * + * default interrupt coalescing timer is 64 x 32 = 2048 usecs + * default interrupt coalescing calibration timer is 16 x 32 = 512 usecs + */ +#define IWL_HOST_INT_TIMEOUT_MAX (0xFF) +#define IWL_HOST_INT_TIMEOUT_DEF (0x40) +#define IWL_HOST_INT_TIMEOUT_MIN (0x0) +#define IWL_HOST_INT_CALIB_TIMEOUT_MAX (0xFF) +#define IWL_HOST_INT_CALIB_TIMEOUT_DEF (0x10) +#define IWL_HOST_INT_CALIB_TIMEOUT_MIN (0x0) + struct iwl_priv { /* ieee device used by generic ieee processing code */ diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c index 5bbe5f1f749c..07bdba93c179 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-rx.c @@ -473,8 +473,8 @@ int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) (rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)| (rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS)); - /* Set interrupt coalescing timer to 64 x 32 = 2048 usecs */ - iwl_write8(priv, CSR_INT_COALESCING, 0x40); + /* Set interrupt coalescing timer to default (2048 usecs) */ + iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_TIMEOUT_DEF); return 0; } |