iwlwifi: pcie: configure more RFH settings
Fine tune RFH registers further:
* Set default queue explicitly
* Set RFH to drop frames exceeding RB size
* Set the maximum rx transfer size to DRAM to 128 instead of 64
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
index c0db681..398dd93 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c
@@ -783,16 +783,26 @@
* Single frame mode
* Rx buffer size 4 or 8k or 12k
* Min RB size 4 or 8
+ * Drop frames that exceed RB size
* 512 RBDs
*/
iwl_write_prph(trans, RFH_RXF_DMA_CFG,
RFH_DMA_EN_ENABLE_VAL |
rb_size | RFH_RXF_DMA_SINGLE_FRAME_MASK |
RFH_RXF_DMA_MIN_RB_4_8 |
+ RFH_RXF_DMA_DROP_TOO_LARGE_MASK |
RFH_RXF_DMA_RBDCB_SIZE_512);
+ /*
+ * Activate DMA snooping.
+ * Set RX DMA chunk size to 128 bit
+ * Default queue is 0
+ */
iwl_write_prph(trans, RFH_GEN_CFG, RFH_GEN_CFG_RFH_DMA_SNOOP |
- RFH_GEN_CFG_SERVICE_DMA_SNOOP);
+ RFH_GEN_CFG_RB_CHUNK_SIZE |
+ (DEFAULT_RXQ_NUM << RFH_GEN_CFG_DEFAULT_RXQ_NUM_POS) |
+ RFH_GEN_CFG_SERVICE_DMA_SNOOP);
+ /* Enable the relevant rx queues */
iwl_write_prph(trans, RFH_RXF_RXQ_ACTIVE, enabled);
/* Set interrupt coalescing timer to default (2048 usecs) */