sfc: Fix descriptor cache sizes
These were accidentally undersized by a factor of 2, which limited
performance.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index 41a321b..7b19686 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -49,11 +49,11 @@
* goes idle.
*/
#define TX_DC_ENTRIES 16
-#define TX_DC_ENTRIES_ORDER 0
+#define TX_DC_ENTRIES_ORDER 1
#define TX_DC_BASE 0x130000
#define RX_DC_ENTRIES 64
-#define RX_DC_ENTRIES_ORDER 2
+#define RX_DC_ENTRIES_ORDER 3
#define RX_DC_BASE 0x100000
static const unsigned int
@@ -2974,14 +2974,14 @@
efx_writeo(efx, &temp, FR_AZ_SRM_RX_DC_CFG);
/* Set TX descriptor cache size. */
- BUILD_BUG_ON(TX_DC_ENTRIES != (16 << TX_DC_ENTRIES_ORDER));
+ BUILD_BUG_ON(TX_DC_ENTRIES != (8 << TX_DC_ENTRIES_ORDER));
EFX_POPULATE_OWORD_1(temp, FRF_AZ_TX_DC_SIZE, TX_DC_ENTRIES_ORDER);
efx_writeo(efx, &temp, FR_AZ_TX_DC_CFG);
/* Set RX descriptor cache size. Set low watermark to size-8, as
* this allows most efficient prefetching.
*/
- BUILD_BUG_ON(RX_DC_ENTRIES != (16 << RX_DC_ENTRIES_ORDER));
+ BUILD_BUG_ON(RX_DC_ENTRIES != (8 << RX_DC_ENTRIES_ORDER));
EFX_POPULATE_OWORD_1(temp, FRF_AZ_RX_DC_SIZE, RX_DC_ENTRIES_ORDER);
efx_writeo(efx, &temp, FR_AZ_RX_DC_CFG);
EFX_POPULATE_OWORD_1(temp, FRF_AZ_RX_DC_PF_LWM, RX_DC_ENTRIES - 8);