sfc: remove phy_op indirection

Originally there were several implementations of PHY operations for the
 several different PHYs used on Falcon boards.  But Falcon is now in a
 separate driver, and all sfc NICs since then have had MCDI-managed PHYs.
Thus, there is no need to indirect through function pointers in
 efx->phy_op; we can simply call the efx_mcdi_phy_* functions directly.

This also hooks up these functions for EF100, which was previously using
 the dummy_phy_ops.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/sfc/efx.c

@@ -33,7 +33,7 @@
 #include "selftest.h"
 #include "sriov.h"
 
-#include "mcdi.h"
+#include "mcdi_port_common.h"
 #include "mcdi_pcol.h"
 #include "workarounds.h"
 
@@ -149,23 +149,17 @@ static int efx_init_port(struct efx_nic *efx)
 
 	mutex_lock(&efx->mac_lock);
 
-	rc = efx->phy_op->init(efx);
-	if (rc)
-		goto fail1;
-
 	efx->port_initialized = true;
 
 	/* Ensure the PHY advertises the correct flow control settings */
-	rc = efx->phy_op->reconfigure(efx);
+	rc = efx_mcdi_port_reconfigure(efx);
 	if (rc && rc != -EPERM)
-		goto fail2;
+		goto fail;
 
 	mutex_unlock(&efx->mac_lock);
 	return 0;
 
-fail2:
-	efx->phy_op->fini(efx);
-fail1:
+fail:
 	mutex_unlock(&efx->mac_lock);
 	return rc;
 }
@@ -177,7 +171,6 @@ static void efx_fini_port(struct efx_nic *efx)
 	if (!efx->port_initialized)
 		return;
 
-	efx->phy_op->fini(efx);
 	efx->port_initialized = false;
 
 	efx->link_state.up = false;
@@ -1229,7 +1222,7 @@ static int efx_pm_thaw(struct device *dev)
 			goto fail;
 
 		mutex_lock(&efx->mac_lock);
-		efx->phy_op->reconfigure(efx);
+		efx_mcdi_port_reconfigure(efx);
 		mutex_unlock(&efx->mac_lock);
 
 		efx_start_all(efx);

drivers/net/ethernet/sfc/efx_common.c

@@ -19,6 +19,7 @@
 #include "rx_common.h"
 #include "tx_common.h"
 #include "nic.h"
+#include "mcdi_port_common.h"
 #include "io.h"
 #include "mcdi_pcol.h"
 
@@ -544,7 +545,7 @@ void efx_start_all(struct efx_nic *efx)
 	 * to poll now because we could have missed a change
 	 */
 	mutex_lock(&efx->mac_lock);
-	if (efx->phy_op->poll(efx))
+	if (efx_mcdi_phy_poll(efx))
 		efx_link_status_changed(efx);
 	mutex_unlock(&efx->mac_lock);
 
@@ -714,9 +715,6 @@ void efx_reset_down(struct efx_nic *efx, enum reset_type method)
 	mutex_lock(&efx->mac_lock);
 	down_write(&efx->filter_sem);
 	mutex_lock(&efx->rss_lock);
-	if (efx->port_initialized && method != RESET_TYPE_INVISIBLE &&
-	    method != RESET_TYPE_DATAPATH)
-		efx->phy_op->fini(efx);
 	efx->type->fini(efx);
 }
 
@@ -759,10 +757,7 @@ int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok)
 
 	if (efx->port_initialized && method != RESET_TYPE_INVISIBLE &&
 	    method != RESET_TYPE_DATAPATH) {
-		rc = efx->phy_op->init(efx);
-		if (rc)
-			goto fail;
-		rc = efx->phy_op->reconfigure(efx);
+		rc = efx_mcdi_port_reconfigure(efx);
 		if (rc && rc != -EPERM)
 			netif_err(efx, drv, efx->net_dev,
 				  "could not restore PHY settings\n");
@@ -959,7 +954,7 @@ void efx_schedule_reset(struct efx_nic *efx, enum reset_type type)
 
 /**************************************************************************
  *
- * Dummy PHY/MAC operations
+ * Dummy NIC operations
  *
  * Can be used for some unimplemented operations
  * Needed so all function pointers are valid and do not have to be tested
@@ -972,18 +967,6 @@ int efx_port_dummy_op_int(struct efx_nic *efx)
 }
 void efx_port_dummy_op_void(struct efx_nic *efx) {}
 
-static bool efx_port_dummy_op_poll(struct efx_nic *efx)
-{
-	return false;
-}
-
-static const struct efx_phy_operations efx_dummy_phy_operations = {
-	.init		 = efx_port_dummy_op_int,
-	.reconfigure	 = efx_port_dummy_op_int,
-	.poll		 = efx_port_dummy_op_poll,
-	.fini		 = efx_port_dummy_op_void,
-};
-
 /**************************************************************************
  *
  * Data housekeeping
@@ -1037,7 +1020,6 @@ int efx_init_struct(struct efx_nic *efx,
 	efx->rps_hash_table = kcalloc(EFX_ARFS_HASH_TABLE_SIZE,
 				      sizeof(*efx->rps_hash_table), GFP_KERNEL);
 #endif
-	efx->phy_op = &efx_dummy_phy_operations;
 	efx->mdio.dev = net_dev;
 	INIT_WORK(&efx->mac_work, efx_mac_work);
 	init_waitqueue_head(&efx->flush_wq);

drivers/net/ethernet/sfc/ethtool_common.c

@@ -15,6 +15,7 @@
 #include "selftest.h"
 #include "rx_common.h"
 #include "ethtool_common.h"
+#include "mcdi_port_common.h"
 
 struct efx_sw_stat_desc {
 	const char *name;
@@ -221,7 +222,7 @@ int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 	efx_link_set_wanted_fc(efx, wanted_fc);
 	if (efx->link_advertising[0] != old_adv ||
 	    (efx->wanted_fc ^ old_fc) & EFX_FC_AUTO) {
-		rc = efx->phy_op->reconfigure(efx);
+		rc = efx_mcdi_port_reconfigure(efx);
 		if (rc) {
 			netif_err(efx, drv, efx->net_dev,
 				  "Unable to advertise requested flow "
@@ -372,20 +373,15 @@ int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 	efx_fill_test(n++, strings, data, &tests->registers,
 		      "core", 0, "registers", NULL);
 
-	if (efx->phy_op->run_tests != NULL) {
-		EFX_WARN_ON_PARANOID(efx->phy_op->test_name == NULL);
+	for (i = 0; true; ++i) {
+		const char *name;
 
-		for (i = 0; true; ++i) {
-			const char *name;
-
-			EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
-			name = efx->phy_op->test_name(efx, i);
-			if (name == NULL)
-				break;
+		EFX_WARN_ON_PARANOID(i >= EFX_MAX_PHY_TESTS);
+		name = efx_mcdi_phy_test_name(efx, i);
+		if (name == NULL)
+			break;
 
-			efx_fill_test(n++, strings, data, &tests->phy_ext[i],
-				      "phy", 0, name, NULL);
-		}
+		efx_fill_test(n++, strings, data, &tests->phy_ext[i], "phy", 0, name, NULL);
 	}
 
 	/* Loopback tests */
@@ -571,7 +567,7 @@ int efx_ethtool_get_link_ksettings(struct net_device *net_dev,
 	u32 supported;
 
 	mutex_lock(&efx->mac_lock);
-	efx->phy_op->get_link_ksettings(efx, cmd);
+	efx_mcdi_phy_get_link_ksettings(efx, cmd);
 	mutex_unlock(&efx->mac_lock);
 
 	/* Both MACs support pause frames (bidirectional and respond-only) */
@@ -607,7 +603,7 @@ int efx_ethtool_set_link_ksettings(struct net_device *net_dev,
 	}
 
 	mutex_lock(&efx->mac_lock);
-	rc = efx->phy_op->set_link_ksettings(efx, cmd);
+	rc = efx_mcdi_phy_set_link_ksettings(efx, cmd);
 	mutex_unlock(&efx->mac_lock);
 	return rc;
 }
@@ -618,10 +614,8 @@ int efx_ethtool_get_fecparam(struct net_device *net_dev,
 	struct efx_nic *efx = netdev_priv(net_dev);
 	int rc;
 
-	if (!efx->phy_op || !efx->phy_op->get_fecparam)
-		return -EOPNOTSUPP;
 	mutex_lock(&efx->mac_lock);
-	rc = efx->phy_op->get_fecparam(efx, fecparam);
+	rc = efx_mcdi_phy_get_fecparam(efx, fecparam);
 	mutex_unlock(&efx->mac_lock);
 
 	return rc;
@@ -633,10 +627,8 @@ int efx_ethtool_set_fecparam(struct net_device *net_dev,
 	struct efx_nic *efx = netdev_priv(net_dev);
 	int rc;
 
-	if (!efx->phy_op || !efx->phy_op->get_fecparam)
-		return -EOPNOTSUPP;
 	mutex_lock(&efx->mac_lock);
-	rc = efx->phy_op->set_fecparam(efx, fecparam);
+	rc = efx_mcdi_phy_set_fecparam(efx, fecparam);
 	mutex_unlock(&efx->mac_lock);
 
 	return rc;
@@ -1332,11 +1324,8 @@ int efx_ethtool_get_module_eeprom(struct net_device *net_dev,
 	struct efx_nic *efx = netdev_priv(net_dev);
 	int ret;
 
-	if (!efx->phy_op || !efx->phy_op->get_module_eeprom)
-		return -EOPNOTSUPP;
-
 	mutex_lock(&efx->mac_lock);
-	ret = efx->phy_op->get_module_eeprom(efx, ee, data);
+	ret = efx_mcdi_phy_get_module_eeprom(efx, ee, data);
 	mutex_unlock(&efx->mac_lock);
 
 	return ret;
@@ -1348,11 +1337,8 @@ int efx_ethtool_get_module_info(struct net_device *net_dev,
 	struct efx_nic *efx = netdev_priv(net_dev);
 	int ret;
 
-	if (!efx->phy_op || !efx->phy_op->get_module_info)
-		return -EOPNOTSUPP;
-
 	mutex_lock(&efx->mac_lock);
-	ret = efx->phy_op->get_module_info(efx, modinfo);
+	ret = efx_mcdi_phy_get_module_info(efx, modinfo);
 	mutex_unlock(&efx->mac_lock);
 
 	return ret;

drivers/net/ethernet/sfc/mcdi.h

@@ -355,7 +355,6 @@ int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out);
 int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id);
 int efx_mcdi_wol_filter_reset(struct efx_nic *efx);
 int efx_mcdi_flush_rxqs(struct efx_nic *efx);
-int efx_mcdi_port_reconfigure(struct efx_nic *efx);
 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev);
 void efx_mcdi_mac_start_stats(struct efx_nic *efx);
 void efx_mcdi_mac_stop_stats(struct efx_nic *efx);

drivers/net/ethernet/sfc/mcdi_port_common.h

@@ -45,9 +45,18 @@ u32 ethtool_fec_caps_to_mcdi(u32 ethtool_cap);
 u32 mcdi_fec_caps_to_ethtool(u32 caps, bool is_25g);
 void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa);
 bool efx_mcdi_phy_poll(struct efx_nic *efx);
-int efx_mcdi_phy_get_fecparam(struct efx_nic *efx,
-			      struct ethtool_fecparam *fec);
+int efx_mcdi_phy_probe(struct efx_nic *efx);
+void efx_mcdi_phy_remove(struct efx_nic *efx);
+void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx, struct ethtool_link_ksettings *cmd);
+int efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx, const struct ethtool_link_ksettings *cmd);
+int efx_mcdi_phy_get_fecparam(struct efx_nic *efx, struct ethtool_fecparam *fec);
+int efx_mcdi_phy_set_fecparam(struct efx_nic *efx, const struct ethtool_fecparam *fec);
 int efx_mcdi_phy_test_alive(struct efx_nic *efx);
+int efx_mcdi_port_reconfigure(struct efx_nic *efx);
+int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, unsigned flags);
+const char *efx_mcdi_phy_test_name(struct efx_nic *efx, unsigned int index);
+int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, struct ethtool_eeprom *ee, u8 *data);
+int efx_mcdi_phy_get_module_info(struct efx_nic *efx, struct ethtool_modinfo *modinfo);
 int efx_mcdi_set_mac(struct efx_nic *efx);
 int efx_mcdi_set_mtu(struct efx_nic *efx);
 int efx_mcdi_mac_init_stats(struct efx_nic *efx);

drivers/net/ethernet/sfc/net_driver.h

@@ -657,51 +657,6 @@ static inline bool efx_link_state_equal(const struct efx_link_state *left,
 		left->fc == right->fc && left->speed == right->speed;
 }
 
-/**
- * struct efx_phy_operations - Efx PHY operations table
- * @probe: Probe PHY and initialise efx->mdio.mode_support, efx->mdio.mmds,
- *	efx->loopback_modes.
- * @init: Initialise PHY
- * @fini: Shut down PHY
- * @reconfigure: Reconfigure PHY (e.g. for new link parameters)
- * @poll: Update @link_state and report whether it changed.
- *	Serialised by the mac_lock.
- * @get_link_ksettings: Get ethtool settings. Serialised by the mac_lock.
- * @set_link_ksettings: Set ethtool settings. Serialised by the mac_lock.
- * @get_fecparam: Get Forward Error Correction settings. Serialised by mac_lock.
- * @set_fecparam: Set Forward Error Correction settings. Serialised by mac_lock.
- * @set_npage_adv: Set abilities advertised in (Extended) Next Page
- *	(only needed where AN bit is set in mmds)
- * @test_alive: Test that PHY is 'alive' (online)
- * @test_name: Get the name of a PHY-specific test/result
- * @run_tests: Run tests and record results as appropriate (offline).
- *	Flags are the ethtool tests flags.
- */
-struct efx_phy_operations {
-	int (*probe) (struct efx_nic *efx);
-	int (*init) (struct efx_nic *efx);
-	void (*fini) (struct efx_nic *efx);
-	void (*remove) (struct efx_nic *efx);
-	int (*reconfigure) (struct efx_nic *efx);
-	bool (*poll) (struct efx_nic *efx);
-	void (*get_link_ksettings)(struct efx_nic *efx,
-				   struct ethtool_link_ksettings *cmd);
-	int (*set_link_ksettings)(struct efx_nic *efx,
-				  const struct ethtool_link_ksettings *cmd);
-	int (*get_fecparam)(struct efx_nic *efx, struct ethtool_fecparam *fec);
-	int (*set_fecparam)(struct efx_nic *efx,
-			    const struct ethtool_fecparam *fec);
-	void (*set_npage_adv) (struct efx_nic *efx, u32);
-	int (*test_alive) (struct efx_nic *efx);
-	const char *(*test_name) (struct efx_nic *efx, unsigned int index);
-	int (*run_tests) (struct efx_nic *efx, int *results, unsigned flags);
-	int (*get_module_eeprom) (struct efx_nic *efx,
-			       struct ethtool_eeprom *ee,
-			       u8 *data);
-	int (*get_module_info) (struct efx_nic *efx,
-				struct ethtool_modinfo *modinfo);
-};
-
 /**
  * enum efx_phy_mode - PHY operating mode flags
  * @PHY_MODE_NORMAL: on and should pass traffic
@@ -920,7 +875,6 @@ struct efx_async_filter_insertion {
  *	field of %MC_CMD_GET_CAPABILITIES_V4 response, or %MC_CMD_MAC_NSTATS)
  * @stats_buffer: DMA buffer for statistics
  * @phy_type: PHY type
- * @phy_op: PHY interface
  * @phy_data: PHY private data (including PHY-specific stats)
  * @mdio: PHY MDIO interface
  * @mdio_bus: PHY MDIO bus ID (only used by Siena)
@@ -1094,7 +1048,6 @@ struct efx_nic {
 	bool rx_nodesc_drops_prev_state;
 
 	unsigned int phy_type;
-	const struct efx_phy_operations *phy_op;
 	void *phy_data;
 	struct mdio_if_info mdio;
 	unsigned int mdio_bus;

drivers/net/ethernet/sfc/selftest.c

@@ -21,6 +21,7 @@
 #include "efx_common.h"
 #include "efx_channels.h"
 #include "nic.h"
+#include "mcdi_port_common.h"
 #include "selftest.h"
 #include "workarounds.h"
 
@@ -99,10 +100,8 @@ static int efx_test_phy_alive(struct efx_nic *efx, struct efx_self_tests *tests)
 {
 	int rc = 0;
 
-	if (efx->phy_op->test_alive) {
-		rc = efx->phy_op->test_alive(efx);
-		tests->phy_alive = rc ? -1 : 1;
-	}
+	rc = efx_mcdi_phy_test_alive(efx);
+	tests->phy_alive = rc ? -1 : 1;
 
 	return rc;
 }
@@ -257,11 +256,8 @@ static int efx_test_phy(struct efx_nic *efx, struct efx_self_tests *tests,
 {
 	int rc;
 
-	if (!efx->phy_op->run_tests)
-		return 0;
-
 	mutex_lock(&efx->mac_lock);
-	rc = efx->phy_op->run_tests(efx, tests->phy_ext, flags);
+	rc = efx_mcdi_phy_run_tests(efx, tests->phy_ext, flags);
 	mutex_unlock(&efx->mac_lock);
 	if (rc == -EPERM)
 		rc = 0;