sfc: Add support for sub-10G speeds

The SFC4000 has a separate MAC for use at sub-10G speeds.  Introduce
an efx_mac_operations structure with implementations for the two MACs.
Switch between the MACs as necessary.

PHY settings are independent of the MAC, so add get_settings() and
set_settings() to efx_phy_operations.  Also add macs field to indicate
which MACs the PHY is connected to.

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

1 files changed, 11 insertions, 15 deletions

diff --git a/drivers/net/sfc/selftest.c b/drivers/net/sfc/selftest.c
index 362956e3fe17..8142e37a518f 100644
--- a/drivers/net/sfc/selftest.c
+++ b/drivers/net/sfc/selftest.c
@@ -26,7 +26,6 @@
 #include "selftest.h"
 #include "boards.h"
 #include "workarounds.h"
-#include "mac.h"
 #include "spi.h"
 #include "falcon_io.h"
 #include "mdio_10g.h"
@@ -105,9 +104,11 @@ static int efx_test_mii(struct efx_nic *efx, struct efx_self_tests *tests)
                 goto out;
         }
 
-        rc = mdio_clause45_check_mmds(efx, efx->phy_op->mmds, 0);
-        if (rc)
-                goto out;
+        if (EFX_IS10G(efx)) {
+                rc = mdio_clause45_check_mmds(efx, efx->phy_op->mmds, 0);
+                if (rc)
+                        goto out;
+        }
 
 out:
         mutex_unlock(&efx->mac_lock);
@@ -598,7 +599,7 @@ static int efx_test_loopbacks(struct efx_nic *efx, struct ethtool_cmd ecmd,
                 do {
                         struct efx_channel *channel = &efx->channel[0];
 
-                        falcon_check_xmac(efx);
+                        efx->mac_op->check_hw(efx);
                         schedule_timeout_uninterruptible(HZ / 10);
                         if (channel->work_pending)
                                 efx_process_channel_now(channel);
@@ -606,13 +607,12 @@ static int efx_test_loopbacks(struct efx_nic *efx, struct ethtool_cmd ecmd,
                         flush_workqueue(efx->workqueue);
                         rmb();
 
-                        /* efx->link_up can be 1 even if the XAUI link is down,
-                         * (bug5762). Usually, it's not worth bothering with the
-                         * difference, but for selftests, we need that extra
-                         * guarantee that the link is really, really, up.
-                         */
+                        /* We need both the phy and xaui links to be ok.
+                         * rather than relying on the falcon_xmac irq/poll
+                         * regime, just poll xaui directly */
                         link_up = efx->link_up;
-                        if (!falcon_xaui_link_ok(efx))
+                        if (link_up && EFX_IS10G(efx) &&
+                            !falcon_xaui_link_ok(efx))
                                 link_up = false;
 
                 } while ((++count < 20) && !link_up);
@@ -721,7 +721,6 @@ int efx_offline_test(struct efx_nic *efx,
         if (ecmd_test.autoneg == AUTONEG_ENABLE) {
                 ecmd_test.autoneg = AUTONEG_DISABLE;
                 ecmd_test.duplex = DUPLEX_FULL;
-                ecmd_test.speed = SPEED_10000;
         }
         efx->loopback_mode = LOOPBACK_NONE;
 
@@ -732,9 +731,6 @@ int efx_offline_test(struct efx_nic *efx,
                 return rc;
         }
 
-        tests->loopback_speed = ecmd_test.speed;
-        tests->loopback_full_duplex = ecmd_test.duplex;
-
         rc = efx_test_phy(efx, tests);
         if (rc && !rc2)
                 rc2 = rc;