diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2009-11-25 16:08:30 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-11-26 15:58:57 -0800 |
| commit | 46e1ac0f42c7ff20a7e47c172e4835273b0e6899 (patch) | |
| tree | ea782833df53dc7bc7c039335693750b8b58233d | |
| parent | 27c0b1a850cdea6298f573d835782f3337be913c (diff) | |
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>
| -rw-r--r-- | drivers/net/sfc/falcon.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c index 41a321b0e8c..7b19686218a 100644 --- a/drivers/net/sfc/falcon.c +++ b/drivers/net/sfc/falcon.c @@ -49,11 +49,11 @@ static int disable_dma_stats; * 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 @@ int falcon_init_nic(struct efx_nic *efx) 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); |