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authorSteve Hodgson <shodgson@solarflare.com>2010-04-28 09:29:32 +0000
committerDavid S. Miller <davem@davemloft.net>2010-04-28 12:44:38 -0700
commit3a595102d4298a357d70aaf1d47ae86d92708ea9 (patch)
tree8feb409e2707f54a94b569c83f3cbf2558ef4c23 /drivers
parentfbcfe8e1525e6f2f633329147cdbb9ab7029f58a (diff)
sfc: Set PERIODIC_NOEVENT flag for MC_CMD_MAC_STATS
When set, an event is not sent whenever periodic MAC statistics are raised. This avoids unnecessary wake-ups. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/sfc/mcdi_mac.c25
1 files changed, 9 insertions, 16 deletions
diff --git a/drivers/net/sfc/mcdi_mac.c b/drivers/net/sfc/mcdi_mac.c
index 06d24a1e412..39182631ac9 100644
--- a/drivers/net/sfc/mcdi_mac.c
+++ b/drivers/net/sfc/mcdi_mac.c
@@ -80,7 +80,7 @@ int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
u8 inbuf[MC_CMD_MAC_STATS_IN_LEN];
int rc;
efx_dword_t *cmd_ptr;
- int period = 1000;
+ int period = enable ? 1000 : 0;
u32 addr_hi;
u32 addr_lo;
@@ -92,21 +92,14 @@ int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_LO, addr_lo);
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_ADDR_HI, addr_hi);
cmd_ptr = (efx_dword_t *)MCDI_PTR(inbuf, MAC_STATS_IN_CMD);
- if (enable)
- EFX_POPULATE_DWORD_6(*cmd_ptr,
- MC_CMD_MAC_STATS_CMD_DMA, 1,
- MC_CMD_MAC_STATS_CMD_CLEAR, clear,
- MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1,
- MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, 1,
- MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0,
- MC_CMD_MAC_STATS_CMD_PERIOD_MS, period);
- else
- EFX_POPULATE_DWORD_5(*cmd_ptr,
- MC_CMD_MAC_STATS_CMD_DMA, 0,
- MC_CMD_MAC_STATS_CMD_CLEAR, clear,
- MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1,
- MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, 0,
- MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0);
+ EFX_POPULATE_DWORD_7(*cmd_ptr,
+ MC_CMD_MAC_STATS_CMD_DMA, !!enable,
+ MC_CMD_MAC_STATS_CMD_CLEAR, clear,
+ MC_CMD_MAC_STATS_CMD_PERIODIC_CHANGE, 1,
+ MC_CMD_MAC_STATS_CMD_PERIODIC_ENABLE, !!enable,
+ MC_CMD_MAC_STATS_CMD_PERIODIC_CLEAR, 0,
+ MC_CMD_MAC_STATS_CMD_PERIODIC_NOEVENT, 1,
+ MC_CMD_MAC_STATS_CMD_PERIOD_MS, period);
MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),