diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2012-01-06 00:14:10 +0400 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2012-01-27 04:10:52 +0400 |
| commit | 1646a6f352a6f70fcca828589ed04797aa09d494 (patch) | |
| tree | 7f39f32e75140e831c26dd57caa7c28515252053 /drivers/net/ethernet/sfc/efx.h | |
| parent | f70d1847348e9548a9a56e4434946315bca297c8 (diff) | |
| download | linux-1646a6f352a6f70fcca828589ed04797aa09d494.tar.xz | |
sfc: Clean up test interrupt handling
Interrupts are normally generated by the event queues, moderated by
timers. However, they may also be triggered by detection of a 'fatal'
error condition (e.g. memory parity error) or by the host writing to
certain CSR fields as part of a self-test.
The IRQ level/index used for these on Falcon rev B0 and Siena is set
by the KER_INT_LEVE_SEL field and cached by the driver in
efx_nic::fatal_irq_level. Since this value is also relevant to
self-tests rename the field to just 'irq_level'.
Avoid unnecessary cache traffic by using a per-channel 'last_irq_cpu'
field and only writing to the per-controller field when the interrupt
matches efx_nic::irq_level. Remove the volatile qualifier and use
ACCESS_ONCE in the places we read these fields.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/ethernet/sfc/efx.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/efx.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h index a3541ac6ea01..e0b66d158d79 100644 --- a/drivers/net/ethernet/sfc/efx.h +++ b/drivers/net/ethernet/sfc/efx.h @@ -145,6 +145,12 @@ static inline void efx_schedule_channel(struct efx_channel *channel) napi_schedule(&channel->napi_str); } +static inline void efx_schedule_channel_irq(struct efx_channel *channel) +{ + channel->last_irq_cpu = raw_smp_processor_id(); + efx_schedule_channel(channel); +} + extern void efx_link_status_changed(struct efx_nic *efx); extern void efx_link_set_advertising(struct efx_nic *efx, u32); extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8); |