diff options
author | Ben Hutchings <bhutchings@solarflare.com> | 2012-10-05 19:31:02 +0100 |
---|---|---|
committer | Ben Hutchings <bhutchings@solarflare.com> | 2013-08-21 20:20:43 +0100 |
commit | ab3b82506046c0038e46bb793591b9a758835645 (patch) | |
tree | 2e0362e0968d2f5334a95b400c8eb8154580206c /drivers | |
parent | b105798fa5597f248256fa03ec25c2fbef922f92 (diff) |
sfc: EFX_WORKAROUND_ALWAYS is really specific to Falcon-architecture
The workarounds that currently use EFX_WORKAROUND_ALWAYS are in
Falcon-specific or Falcon-arch-specific code, so get rid of the
conditions altogether. Add/move comments as appropriate.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/sfc/falcon.c | 35 | ||||
-rw-r--r-- | drivers/net/ethernet/sfc/farch.c | 10 | ||||
-rw-r--r-- | drivers/net/ethernet/sfc/workarounds.h | 10 |
3 files changed, 19 insertions, 36 deletions
diff --git a/drivers/net/ethernet/sfc/falcon.c b/drivers/net/ethernet/sfc/falcon.c index 17bd7dc7b2af..0fd8a88905a6 100644 --- a/drivers/net/ethernet/sfc/falcon.c +++ b/drivers/net/ethernet/sfc/falcon.c @@ -686,7 +686,7 @@ static void falcon_ack_status_intr(struct efx_nic *efx) return; /* We expect xgmii faults if the wireside link is down */ - if (!EFX_WORKAROUND_5147(efx) || !efx->link_state.up) + if (!efx->link_state.up) return; /* We can only use this interrupt to signal the negative edge of @@ -795,29 +795,22 @@ static void falcon_reconfigure_xgxs_core(struct efx_nic *efx) bool xgxs_loopback = (efx->loopback_mode == LOOPBACK_XGXS); bool xaui_loopback = (efx->loopback_mode == LOOPBACK_XAUI); bool xgmii_loopback = (efx->loopback_mode == LOOPBACK_XGMII); + bool old_xgmii_loopback, old_xgxs_loopback, old_xaui_loopback; /* XGXS block is flaky and will need to be reset if moving * into our out of XGMII, XGXS or XAUI loopbacks. */ - if (EFX_WORKAROUND_5147(efx)) { - bool old_xgmii_loopback, old_xgxs_loopback, old_xaui_loopback; - bool reset_xgxs; - - efx_reado(efx, ®, FR_AB_XX_CORE_STAT); - old_xgxs_loopback = EFX_OWORD_FIELD(reg, FRF_AB_XX_XGXS_LB_EN); - old_xgmii_loopback = - EFX_OWORD_FIELD(reg, FRF_AB_XX_XGMII_LB_EN); - - efx_reado(efx, ®, FR_AB_XX_SD_CTL); - old_xaui_loopback = EFX_OWORD_FIELD(reg, FRF_AB_XX_LPBKA); + efx_reado(efx, ®, FR_AB_XX_CORE_STAT); + old_xgxs_loopback = EFX_OWORD_FIELD(reg, FRF_AB_XX_XGXS_LB_EN); + old_xgmii_loopback = EFX_OWORD_FIELD(reg, FRF_AB_XX_XGMII_LB_EN); - /* The PHY driver may have turned XAUI off */ - reset_xgxs = ((xgxs_loopback != old_xgxs_loopback) || - (xaui_loopback != old_xaui_loopback) || - (xgmii_loopback != old_xgmii_loopback)); + efx_reado(efx, ®, FR_AB_XX_SD_CTL); + old_xaui_loopback = EFX_OWORD_FIELD(reg, FRF_AB_XX_LPBKA); - if (reset_xgxs) - falcon_reset_xaui(efx); - } + /* The PHY driver may have turned XAUI off */ + if ((xgxs_loopback != old_xgxs_loopback) || + (xaui_loopback != old_xaui_loopback) || + (xgmii_loopback != old_xgmii_loopback)) + falcon_reset_xaui(efx); efx_reado(efx, ®, FR_AB_XX_CORE_STAT); EFX_SET_OWORD_FIELD(reg, FRF_AB_XX_FORCE_SIG, @@ -946,8 +939,8 @@ static void falcon_poll_xmac(struct efx_nic *efx) { struct falcon_nic_data *nic_data = efx->nic_data; - if (!EFX_WORKAROUND_5147(efx) || !efx->link_state.up || - !nic_data->xmac_poll_required) + /* We expect xgmii faults if the wireside link is down */ + if (!efx->link_state.up || !nic_data->xmac_poll_required) return; nic_data->xmac_poll_required = !falcon_xmac_link_ok_retry(efx, 1); diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c index c3d07c556569..7f50882f11ab 100644 --- a/drivers/net/ethernet/sfc/farch.c +++ b/drivers/net/ethernet/sfc/farch.c @@ -830,8 +830,7 @@ efx_farch_handle_tx_event(struct efx_channel *channel, efx_qword_t *event) netif_tx_lock(efx->net_dev); efx_farch_notify_tx_desc(tx_queue); netif_tx_unlock(efx->net_dev); - } else if (EFX_QWORD_FIELD(*event, FSF_AZ_TX_EV_PKT_ERR) && - EFX_WORKAROUND_10727(efx)) { + } else if (EFX_QWORD_FIELD(*event, FSF_AZ_TX_EV_PKT_ERR)) { efx_schedule_reset(efx, RESET_TYPE_TX_DESC_FETCH); } else { netif_err(efx, tx_err, efx->net_dev, @@ -1531,8 +1530,7 @@ irqreturn_t efx_farch_legacy_interrupt(int irq, void *dev_id) } if (queues != 0) { - if (EFX_WORKAROUND_15783(efx)) - efx->irq_zero_count = 0; + efx->irq_zero_count = 0; /* Schedule processing of any interrupting queues */ if (likely(soft_enabled)) { @@ -1544,9 +1542,11 @@ irqreturn_t efx_farch_legacy_interrupt(int irq, void *dev_id) } result = IRQ_HANDLED; - } else if (EFX_WORKAROUND_15783(efx)) { + } else { efx_qword_t *event; + /* Legacy ISR read can return zero once (SF bug 15783) */ + /* We can't return IRQ_HANDLED more than once on seeing ISR=0 * because this might be a shared interrupt. */ if (efx->irq_zero_count++ == 0) diff --git a/drivers/net/ethernet/sfc/workarounds.h b/drivers/net/ethernet/sfc/workarounds.h index dff565a476ff..7e5be1d873a7 100644 --- a/drivers/net/ethernet/sfc/workarounds.h +++ b/drivers/net/ethernet/sfc/workarounds.h @@ -15,25 +15,15 @@ * Bug numbers are from Solarflare's Bugzilla. */ -#define EFX_WORKAROUND_ALWAYS(efx) 1 #define EFX_WORKAROUND_FALCON_A(efx) (efx_nic_rev(efx) <= EFX_REV_FALCON_A1) #define EFX_WORKAROUND_FALCON_AB(efx) (efx_nic_rev(efx) <= EFX_REV_FALCON_B0) #define EFX_WORKAROUND_SIENA(efx) (efx_nic_rev(efx) == EFX_REV_SIENA_A0) #define EFX_WORKAROUND_10G(efx) 1 -/* XAUI resets if link not detected */ -#define EFX_WORKAROUND_5147 EFX_WORKAROUND_ALWAYS -/* RX PCIe double split performance issue */ -#define EFX_WORKAROUND_7575 EFX_WORKAROUND_ALWAYS /* Bit-bashed I2C reads cause performance drop */ #define EFX_WORKAROUND_7884 EFX_WORKAROUND_10G -/* TX_EV_PKT_ERR can be caused by a dangling TX descriptor - * or a PCIe error (bug 11028) */ -#define EFX_WORKAROUND_10727 EFX_WORKAROUND_ALWAYS /* Truncated IPv4 packets can confuse the TX packet parser */ #define EFX_WORKAROUND_15592 EFX_WORKAROUND_FALCON_AB -/* Legacy ISR read can return zero once */ -#define EFX_WORKAROUND_15783 EFX_WORKAROUND_ALWAYS /* Legacy interrupt storm when interrupt fifo fills */ #define EFX_WORKAROUND_17213 EFX_WORKAROUND_SIENA |