sfc: Simplify PHY polling

Falcon can generate events for LASI interrupts from the PHY, but in
practice we have never implemented this in reference designs.  Instead
we have polled, inserted the appropriate events, and then handled the
events later.  This is a waste of time and code.

Instead, make PHY poll functions update the link state synchronously
and report whether it changed.  We can still make use of the LASI
registers as a shortcut on the SFT9001.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/sfc/efx.h b/drivers/net/sfc/efx.h
index 01b93f93d316..15edda2a2242 100644
--- a/drivers/net/sfc/efx.h
+++ b/drivers/net/sfc/efx.h
@@ -90,6 +90,7 @@ extern int efx_port_dummy_op_int(struct efx_nic *efx);
 extern void efx_port_dummy_op_void(struct efx_nic *efx);
 extern void
 efx_port_dummy_op_set_id_led(struct efx_nic *efx, enum efx_led_mode mode);
+extern bool efx_port_dummy_op_poll(struct efx_nic *efx);
 
 /* MTD */
 #ifdef CONFIG_SFC_MTD
@@ -113,4 +114,6 @@ static inline void efx_schedule_channel(struct efx_channel *channel)
         napi_schedule(&channel->napi_str);
 }
 
+extern void efx_link_status_changed(struct efx_nic *efx);
+
 #endif /* EFX_EFX_H */