diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2009-08-26 12:16:46 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-08-27 04:38:51 +0400 |
| commit | d4ec09acdb15cdb5afdb5cd03f6bceb5c3c690a5 (patch) | |
| tree | 11b9a9e797958a86b4c33ffc8710a4528f7b4ba5 | |
| parent | aed0628dae0c26b47d40d65f942abe30279b52a5 (diff) | |
| download | linux-d4ec09acdb15cdb5afdb5cd03f6bceb5c3c690a5.tar.xz | |
sfc: Do not reinitialise XAUI serdes before it has completed reset
falcon_reset_xaui() waits for XGXS reset to complete, but the XAUI
serdes reset may take longer. It needs to check both reset active
bits.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/sfc/falcon_hwdefs.h | 2 | ||||
| -rw-r--r-- | drivers/net/sfc/falcon_xmac.c | 8 |
2 files changed, 7 insertions, 3 deletions
diff --git a/drivers/net/sfc/falcon_hwdefs.h b/drivers/net/sfc/falcon_hwdefs.h index 375e2a5961ec..2d2261117ace 100644 --- a/drivers/net/sfc/falcon_hwdefs.h +++ b/drivers/net/sfc/falcon_hwdefs.h @@ -700,6 +700,8 @@ /* XGXS/XAUI powerdown/reset register */ #define XX_PWR_RST_REG 0x1300 +#define XX_SD_RST_ACT_LBN 16 +#define XX_SD_RST_ACT_WIDTH 1 #define XX_PWRDND_EN_LBN 15 #define XX_PWRDND_EN_WIDTH 1 #define XX_PWRDNC_EN_LBN 14 diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c index 2b3269c03263..bec52ca37eee 100644 --- a/drivers/net/sfc/falcon_xmac.c +++ b/drivers/net/sfc/falcon_xmac.c @@ -64,13 +64,15 @@ int falcon_reset_xaui(struct efx_nic *efx) efx_oword_t reg; int count; + /* Start reset sequence */ EFX_POPULATE_DWORD_1(reg, XX_RST_XX_EN, 1); falcon_write(efx, ®, XX_PWR_RST_REG); - /* Give some time for the link to establish */ - for (count = 0; count < 1000; count++) { /* wait upto 10ms */ + /* Wait up to 10 ms for completion, then reinitialise */ + for (count = 0; count < 1000; count++) { falcon_read(efx, ®, XX_PWR_RST_REG); - if (EFX_OWORD_FIELD(reg, XX_RST_XX_EN) == 0) { + if (EFX_OWORD_FIELD(reg, XX_RST_XX_EN) == 0 && + EFX_OWORD_FIELD(reg, XX_SD_RST_ACT) == 0) { falcon_setup_xaui(efx); return 0; } |