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| author | Ben Hutchings <bhutchings@solarflare.com> | 2012-01-05 20:14:10 +0000 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2012-01-27 00:10:52 +0000 |
| commit | 1646a6f352a6f70fcca828589ed04797aa09d494 (patch) | |
| tree | 7f39f32e75140e831c26dd57caa7c28515252053 /drivers/net/ethernet/sfc/falcon.c | |
| parent | f70d1847348e9548a9a56e4434946315bca297c8 (diff) | |
| download | op-kernel-dev-1646a6f352a6f70fcca828589ed04797aa09d494.zip op-kernel-dev-1646a6f352a6f70fcca828589ed04797aa09d494.tar.gz | |
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/falcon.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/falcon.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/sfc/falcon.c b/drivers/net/ethernet/sfc/falcon.c index b4e91ed..9828511 100644 --- a/drivers/net/ethernet/sfc/falcon.c +++ b/drivers/net/ethernet/sfc/falcon.c @@ -189,9 +189,9 @@ irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id) falcon_irq_ack_a1(efx); if (queues & 1) - efx_schedule_channel(efx_get_channel(efx, 0)); + efx_schedule_channel_irq(efx_get_channel(efx, 0)); if (queues & 2) - efx_schedule_channel(efx_get_channel(efx, 1)); + efx_schedule_channel_irq(efx_get_channel(efx, 1)); return IRQ_HANDLED; } /************************************************************************** |
