Merge branch 'sfc-Medford2'

Edward Cree says:

====================
sfc: Initial X2000-series (Medford2) support

Basic PCI-level changes to support X2000-series NICs.
Also fix unexpected-PTP-event log messages, since the timestamp format has
 been changed in these NICs and that causes us to fail to probe PTP (but we
 still get the PPS events).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

9 files changed, 162 insertions, 68 deletions

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index e566dbb3343d..1f64c7f60943 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -160,11 +160,31 @@ static int efx_ef10_get_warm_boot_count(struct efx_nic *efx)
 		EFX_DWORD_FIELD(reg, EFX_WORD_0) : -EIO;
 }
 
+/* On all EF10s up to and including SFC9220 (Medford1), all PFs use BAR 0 for
+ * I/O space and BAR 2(&3) for memory.  On SFC9250 (Medford2), there is no I/O
+ * bar; PFs use BAR 0/1 for memory.
+ */
+static unsigned int efx_ef10_pf_mem_bar(struct efx_nic *efx)
+{
+	switch (efx->pci_dev->device) {
+	case 0x0b03: /* SFC9250 PF */
+		return 0;
+	default:
+		return 2;
+	}
+}
+
+/* All VFs use BAR 0/1 for memory */
+static unsigned int efx_ef10_vf_mem_bar(struct efx_nic *efx)
+{
+	return 0;
+}
+
 static unsigned int efx_ef10_mem_map_size(struct efx_nic *efx)
 {
 	int bar;
 
-	bar = efx->type->mem_bar;
+	bar = efx->type->mem_bar(efx);
 	return resource_size(&efx->pci_dev->resource[bar]);
 }
 
@@ -213,7 +233,7 @@ static int efx_ef10_get_vf_index(struct efx_nic *efx)
 
 static int efx_ef10_init_datapath_caps(struct efx_nic *efx)
 {
-	MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_CAPABILITIES_V2_OUT_LEN);
+	MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_CAPABILITIES_V3_OUT_LEN);
 	struct efx_ef10_nic_data *nic_data = efx->nic_data;
 	size_t outlen;
 	int rc;
@@ -257,6 +277,35 @@ static int efx_ef10_init_datapath_caps(struct efx_nic *efx)
 		return -ENODEV;
 	}
 
+	if (outlen >= MC_CMD_GET_CAPABILITIES_V3_OUT_LEN) {
+		u8 vi_window_mode = MCDI_BYTE(outbuf,
+				GET_CAPABILITIES_V3_OUT_VI_WINDOW_MODE);
+
+		switch (vi_window_mode) {
+		case MC_CMD_GET_CAPABILITIES_V3_OUT_VI_WINDOW_MODE_8K:
+			efx->vi_stride = 8192;
+			break;
+		case MC_CMD_GET_CAPABILITIES_V3_OUT_VI_WINDOW_MODE_16K:
+			efx->vi_stride = 16384;
+			break;
+		case MC_CMD_GET_CAPABILITIES_V3_OUT_VI_WINDOW_MODE_64K:
+			efx->vi_stride = 65536;
+			break;
+		default:
+			netif_err(efx, probe, efx->net_dev,
+				  "Unrecognised VI window mode %d\n",
+				  vi_window_mode);
+			return -EIO;
+		}
+		netif_dbg(efx, probe, efx->net_dev, "vi_stride = %u\n",
+			  efx->vi_stride);
+	} else {
+		/* keep default VI stride */
+		netif_dbg(efx, probe, efx->net_dev,
+			  "firmware did not report VI window mode, assuming vi_stride = %u\n",
+			  efx->vi_stride);
+	}
+
 	return 0;
 }
 
@@ -589,17 +638,6 @@ static int efx_ef10_probe(struct efx_nic *efx)
 	struct efx_ef10_nic_data *nic_data;
 	int i, rc;
 
-	/* We can have one VI for each 8K region.  However, until we
-	 * use TX option descriptors we need two TX queues per channel.
-	 */
-	efx->max_channels = min_t(unsigned int,
-				  EFX_MAX_CHANNELS,
-				  efx_ef10_mem_map_size(efx) /
-				  (EFX_VI_PAGE_SIZE * EFX_TXQ_TYPES));
-	efx->max_tx_channels = efx->max_channels;
-	if (WARN_ON(efx->max_channels == 0))
-		return -EIO;
-
 	nic_data = kzalloc(sizeof(*nic_data), GFP_KERNEL);
 	if (!nic_data)
 		return -ENOMEM;
@@ -671,6 +709,20 @@ static int efx_ef10_probe(struct efx_nic *efx)
 	if (rc < 0)
 		goto fail5;
 
+	/* We can have one VI for each vi_stride-byte region.
+	 * However, until we use TX option descriptors we need two TX queues
+	 * per channel.
+	 */
+	efx->max_channels = min_t(unsigned int,
+				  EFX_MAX_CHANNELS,
+				  efx_ef10_mem_map_size(efx) /
+				  (efx->vi_stride * EFX_TXQ_TYPES));
+	efx->max_tx_channels = efx->max_channels;
+	if (WARN_ON(efx->max_channels == 0)) {
+		rc = -EIO;
+		goto fail5;
+	}
+
 	efx->rx_packet_len_offset =
 		ES_DZ_RX_PREFIX_PKTLEN_OFST - ES_DZ_RX_PREFIX_SIZE;
 
@@ -695,7 +747,14 @@ static int efx_ef10_probe(struct efx_nic *efx)
 	if (rc && rc != -EPERM)
 		goto fail5;
 
-	efx_ptp_probe(efx, NULL);
+	rc = efx_ptp_probe(efx, NULL);
+	/* Failure to probe PTP is not fatal.
+	 * In the case of EPERM, efx_ptp_probe will print its own message (in
+	 * efx_ptp_get_attributes()), so we don't need to.
+	 */
+	if (rc && rc != -EPERM)
+		netif_warn(efx, drv, efx->net_dev,
+			   "Failed to probe PTP, rc=%d\n", rc);
 
 #ifdef CONFIG_SFC_SRIOV
 	if ((efx->pci_dev->physfn) && (!efx->pci_dev->is_physfn)) {
@@ -907,7 +966,7 @@ static int efx_ef10_link_piobufs(struct efx_nic *efx)
 			} else {
 				tx_queue->piobuf =
 					nic_data->pio_write_base +
-					index * EFX_VI_PAGE_SIZE + offset;
+					index * efx->vi_stride + offset;
 				tx_queue->piobuf_offset = offset;
 				netif_dbg(efx, probe, efx->net_dev,
 					  "linked VI %u to PIO buffer %u offset %x addr %p\n",
@@ -1253,19 +1312,19 @@ static int efx_ef10_dimension_resources(struct efx_nic *efx)
 	 * for writing PIO buffers through.
 	 *
 	 * The UC mapping contains (channel_vis - 1) complete VIs and the
-	 * first half of the next VI.  Then the WC mapping begins with
-	 * the second half of this last VI.
+	 * first 4K of the next VI.  Then the WC mapping begins with
+	 * the remainder of this last VI.
 	 */
-	uc_mem_map_size = PAGE_ALIGN((channel_vis - 1) * EFX_VI_PAGE_SIZE +
+	uc_mem_map_size = PAGE_ALIGN((channel_vis - 1) * efx->vi_stride +
 				     ER_DZ_TX_PIOBUF);
 	if (nic_data->n_piobufs) {
 		/* pio_write_vi_base rounds down to give the number of complete
 		 * VIs inside the UC mapping.
 		 */
-		pio_write_vi_base = uc_mem_map_size / EFX_VI_PAGE_SIZE;
+		pio_write_vi_base = uc_mem_map_size / efx->vi_stride;
 		wc_mem_map_size = (PAGE_ALIGN((pio_write_vi_base +
 					       nic_data->n_piobufs) *
-					      EFX_VI_PAGE_SIZE) -
+					      efx->vi_stride) -
 				   uc_mem_map_size);
 		max_vis = pio_write_vi_base + nic_data->n_piobufs;
 	} else {
@@ -1337,7 +1396,7 @@ static int efx_ef10_dimension_resources(struct efx_nic *efx)
 		nic_data->pio_write_vi_base = pio_write_vi_base;
 		nic_data->pio_write_base =
 			nic_data->wc_membase +
-			(pio_write_vi_base * EFX_VI_PAGE_SIZE + ER_DZ_TX_PIOBUF -
+			(pio_write_vi_base * efx->vi_stride + ER_DZ_TX_PIOBUF -
 			 uc_mem_map_size);
 
 		rc = efx_ef10_link_piobufs(efx);
@@ -1951,8 +2010,9 @@ static void efx_ef10_push_irq_moderation(struct efx_channel *channel)
 	} else {
 		unsigned int ticks = efx_usecs_to_ticks(efx, usecs);
 
-		EFX_POPULATE_DWORD_2(timer_cmd, ERF_DZ_TC_TIMER_MODE, mode,
-				     ERF_DZ_TC_TIMER_VAL, ticks);
+		EFX_POPULATE_DWORD_3(timer_cmd, ERF_DZ_TC_TIMER_MODE, mode,
+				     ERF_DZ_TC_TIMER_VAL, ticks,
+				     ERF_FZ_TC_TMR_REL_VAL, ticks);
 		efx_writed_page(efx, &timer_cmd, ER_DZ_EVQ_TMR,
 				channel->channel);
 	}
@@ -3233,8 +3293,8 @@ static u16 efx_ef10_handle_rx_event_errors(struct efx_channel *channel,
 		if (unlikely(rx_encap_hdr != ESE_EZ_ENCAP_HDR_VXLAN &&
 			     ((rx_l3_class != ESE_DZ_L3_CLASS_IP4 &&
 			       rx_l3_class != ESE_DZ_L3_CLASS_IP6) ||
-			      (rx_l4_class != ESE_DZ_L4_CLASS_TCP &&
-			       rx_l4_class != ESE_DZ_L4_CLASS_UDP))))
+			      (rx_l4_class != ESE_FZ_L4_CLASS_TCP &&
+			       rx_l4_class != ESE_FZ_L4_CLASS_UDP))))
 			netdev_WARN(efx->net_dev,
 				    "invalid class for RX_TCPUDP_CKSUM_ERR: event="
 				    EFX_QWORD_FMT "\n",
@@ -3271,8 +3331,8 @@ static u16 efx_ef10_handle_rx_event_errors(struct efx_channel *channel,
 				    EFX_QWORD_VAL(*event));
 		else if (unlikely((rx_l3_class != ESE_DZ_L3_CLASS_IP4 &&
 				   rx_l3_class != ESE_DZ_L3_CLASS_IP6) ||
-				  (rx_l4_class != ESE_DZ_L4_CLASS_TCP &&
-				   rx_l4_class != ESE_DZ_L4_CLASS_UDP)))
+				  (rx_l4_class != ESE_FZ_L4_CLASS_TCP &&
+				   rx_l4_class != ESE_FZ_L4_CLASS_UDP)))
 			netdev_WARN(efx->net_dev,
 				    "invalid class for RX_TCP_UDP_INNER_CHKSUM_ERR: event="
 				    EFX_QWORD_FMT "\n",
@@ -3307,7 +3367,7 @@ static int efx_ef10_handle_rx_event(struct efx_channel *channel,
 	next_ptr_lbits = EFX_QWORD_FIELD(*event, ESF_DZ_RX_DSC_PTR_LBITS);
 	rx_queue_label = EFX_QWORD_FIELD(*event, ESF_DZ_RX_QLABEL);
 	rx_l3_class = EFX_QWORD_FIELD(*event, ESF_DZ_RX_L3_CLASS);
-	rx_l4_class = EFX_QWORD_FIELD(*event, ESF_DZ_RX_L4_CLASS);
+	rx_l4_class = EFX_QWORD_FIELD(*event, ESF_FZ_RX_L4_CLASS);
 	rx_cont = EFX_QWORD_FIELD(*event, ESF_DZ_RX_CONT);
 	rx_encap_hdr =
 		nic_data->datapath_caps &
@@ -3385,8 +3445,8 @@ static int efx_ef10_handle_rx_event(struct efx_channel *channel,
 							 rx_l3_class, rx_l4_class,
 							 event);
 	} else {
-		bool tcpudp = rx_l4_class == ESE_DZ_L4_CLASS_TCP ||
-			      rx_l4_class == ESE_DZ_L4_CLASS_UDP;
+		bool tcpudp = rx_l4_class == ESE_FZ_L4_CLASS_TCP ||
+			      rx_l4_class == ESE_FZ_L4_CLASS_UDP;
 
 		switch (rx_encap_hdr) {
 		case ESE_EZ_ENCAP_HDR_VXLAN: /* VxLAN or GENEVE */
@@ -3407,7 +3467,7 @@ static int efx_ef10_handle_rx_event(struct efx_channel *channel,
 		}
 	}
 
-	if (rx_l4_class == ESE_DZ_L4_CLASS_TCP)
+	if (rx_l4_class == ESE_FZ_L4_CLASS_TCP)
 		flags |= EFX_RX_PKT_TCP;
 
 	channel->irq_mod_score += 2 * n_packets;
@@ -6392,7 +6452,7 @@ out_unlock:
 
 const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
 	.is_vf = true,
-	.mem_bar = EFX_MEM_VF_BAR,
+	.mem_bar = efx_ef10_vf_mem_bar,
 	.mem_map_size = efx_ef10_mem_map_size,
 	.probe = efx_ef10_probe_vf,
 	.remove = efx_ef10_remove,
@@ -6500,7 +6560,7 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
 
 const struct efx_nic_type efx_hunt_a0_nic_type = {
 	.is_vf = false,
-	.mem_bar = EFX_MEM_BAR,
+	.mem_bar = efx_ef10_pf_mem_bar,
 	.mem_map_size = efx_ef10_mem_map_size,
 	.probe = efx_ef10_probe_pf,
 	.remove = efx_ef10_remove,
diff --git a/drivers/net/ethernet/sfc/ef10_regs.h b/drivers/net/ethernet/sfc/ef10_regs.h
index 2c4bf9476c37..6a56778cf06c 100644
--- a/drivers/net/ethernet/sfc/ef10_regs.h
+++ b/drivers/net/ethernet/sfc/ef10_regs.h
@@ -1,6 +1,6 @@
 /****************************************************************************
  * Driver for Solarflare network controllers and boards
- * Copyright 2012-2015 Solarflare Communications Inc.
+ * Copyright 2012-2017 Solarflare Communications Inc.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published
@@ -79,6 +79,8 @@
 #define	ER_DZ_EVQ_TMR 0x00000420
 #define	ER_DZ_EVQ_TMR_STEP 8192
 #define	ER_DZ_EVQ_TMR_ROWS 2048
+#define	ERF_FZ_TC_TMR_REL_VAL_LBN 16
+#define	ERF_FZ_TC_TMR_REL_VAL_WIDTH 14
 #define	ERF_DZ_TC_TIMER_MODE_LBN 14
 #define	ERF_DZ_TC_TIMER_MODE_WIDTH 2
 #define	ERF_DZ_TC_TIMER_VAL_LBN 0
@@ -159,16 +161,24 @@
 #define	ESF_DZ_RX_EV_SOFT2_WIDTH 2
 #define	ESF_DZ_RX_DSC_PTR_LBITS_LBN 48
 #define	ESF_DZ_RX_DSC_PTR_LBITS_WIDTH 4
-#define	ESF_DZ_RX_L4_CLASS_LBN 45
-#define	ESF_DZ_RX_L4_CLASS_WIDTH 3
-#define	ESE_DZ_L4_CLASS_RSVD7 7
-#define	ESE_DZ_L4_CLASS_RSVD6 6
-#define	ESE_DZ_L4_CLASS_RSVD5 5
-#define	ESE_DZ_L4_CLASS_RSVD4 4
-#define	ESE_DZ_L4_CLASS_RSVD3 3
-#define	ESE_DZ_L4_CLASS_UDP 2
-#define	ESE_DZ_L4_CLASS_TCP 1
-#define	ESE_DZ_L4_CLASS_UNKNOWN 0
+#define	ESF_DE_RX_L4_CLASS_LBN 45
+#define	ESF_DE_RX_L4_CLASS_WIDTH 3
+#define	ESE_DE_L4_CLASS_RSVD7 7
+#define	ESE_DE_L4_CLASS_RSVD6 6
+#define	ESE_DE_L4_CLASS_RSVD5 5
+#define	ESE_DE_L4_CLASS_RSVD4 4
+#define	ESE_DE_L4_CLASS_RSVD3 3
+#define	ESE_DE_L4_CLASS_UDP 2
+#define	ESE_DE_L4_CLASS_TCP 1
+#define	ESE_DE_L4_CLASS_UNKNOWN 0
+#define	ESF_FZ_RX_FASTPD_INDCTR_LBN 47
+#define	ESF_FZ_RX_FASTPD_INDCTR_WIDTH 1
+#define	ESF_FZ_RX_L4_CLASS_LBN 45
+#define	ESF_FZ_RX_L4_CLASS_WIDTH 2
+#define	ESE_FZ_L4_CLASS_RSVD3 3
+#define	ESE_FZ_L4_CLASS_UDP 2
+#define	ESE_FZ_L4_CLASS_TCP 1
+#define	ESE_FZ_L4_CLASS_UNKNOWN 0
 #define	ESF_DZ_RX_L3_CLASS_LBN 42
 #define	ESF_DZ_RX_L3_CLASS_WIDTH 3
 #define	ESE_DZ_L3_CLASS_RSVD7 7
@@ -215,6 +225,8 @@
 #define	ESF_EZ_RX_ABORT_WIDTH 1
 #define	ESF_DZ_RX_ECC_ERR_LBN 29
 #define	ESF_DZ_RX_ECC_ERR_WIDTH 1
+#define	ESF_DZ_RX_TRUNC_ERR_LBN 29
+#define	ESF_DZ_RX_TRUNC_ERR_WIDTH 1
 #define	ESF_DZ_RX_CRC1_ERR_LBN 28
 #define	ESF_DZ_RX_CRC1_ERR_WIDTH 1
 #define	ESF_DZ_RX_CRC0_ERR_LBN 27
@@ -332,6 +344,8 @@
 #define	ESE_DZ_TX_OPTION_DESC_CRC_CSUM 0
 #define	ESF_DZ_TX_TSO_OPTION_TYPE_LBN 56
 #define	ESF_DZ_TX_TSO_OPTION_TYPE_WIDTH 4
+#define	ESE_DZ_TX_TSO_OPTION_DESC_FATSO2B 3
+#define	ESE_DZ_TX_TSO_OPTION_DESC_FATSO2A 2
 #define	ESE_DZ_TX_TSO_OPTION_DESC_ENCAP 1
 #define	ESE_DZ_TX_TSO_OPTION_DESC_NORMAL 0
 #define	ESF_DZ_TX_TSO_TCP_FLAGS_LBN 48
@@ -341,7 +355,7 @@
 #define	ESF_DZ_TX_TSO_TCP_SEQNO_LBN 0
 #define	ESF_DZ_TX_TSO_TCP_SEQNO_WIDTH 32
 
-/* TX_TSO_FATSO2A_DESC */
+/* TX_TSO_V2_DESC_A */
 #define	ESF_DZ_TX_DESC_IS_OPT_LBN 63
 #define	ESF_DZ_TX_DESC_IS_OPT_WIDTH 1
 #define	ESF_DZ_TX_OPTION_TYPE_LBN 60
@@ -360,8 +374,7 @@
 #define	ESF_DZ_TX_TSO_TCP_SEQNO_LBN 0
 #define	ESF_DZ_TX_TSO_TCP_SEQNO_WIDTH 32
 
-
-/* TX_TSO_FATSO2B_DESC */
+/* TX_TSO_V2_DESC_B */
 #define	ESF_DZ_TX_DESC_IS_OPT_LBN 63
 #define	ESF_DZ_TX_DESC_IS_OPT_WIDTH 1
 #define	ESF_DZ_TX_OPTION_TYPE_LBN 60
@@ -375,11 +388,10 @@
 #define	ESE_DZ_TX_TSO_OPTION_DESC_FATSO2A 2
 #define	ESE_DZ_TX_TSO_OPTION_DESC_ENCAP 1
 #define	ESE_DZ_TX_TSO_OPTION_DESC_NORMAL 0
-#define	ESF_DZ_TX_TSO_OUTER_IP_ID_LBN 0
-#define	ESF_DZ_TX_TSO_OUTER_IP_ID_WIDTH 16
 #define	ESF_DZ_TX_TSO_TCP_MSS_LBN 32
 #define	ESF_DZ_TX_TSO_TCP_MSS_WIDTH 16
-
+#define	ESF_DZ_TX_TSO_OUTER_IPID_LBN 0
+#define	ESF_DZ_TX_TSO_OUTER_IPID_WIDTH 16
 
 /*************************************************************************/
 
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index e3c492fcaff0..7bcbedce07a5 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -27,6 +27,7 @@
 #include <net/udp_tunnel.h>
 #include "efx.h"
 #include "nic.h"
+#include "io.h"
 #include "selftest.h"
 #include "sriov.h"
 
@@ -1248,7 +1249,7 @@ static int efx_init_io(struct efx_nic *efx)
 
 	netif_dbg(efx, probe, efx->net_dev, "initialising I/O\n");
 
-	bar = efx->type->mem_bar;
+	bar = efx->type->mem_bar(efx);
 
 	rc = pci_enable_device(pci_dev);
 	if (rc) {
@@ -1323,7 +1324,7 @@ static void efx_fini_io(struct efx_nic *efx)
 	}
 
 	if (efx->membase_phys) {
-		bar = efx->type->mem_bar;
+		bar = efx->type->mem_bar(efx);
 		pci_release_region(efx->pci_dev, bar);
 		efx->membase_phys = 0;
 	}
@@ -2909,6 +2910,10 @@ static const struct pci_device_id efx_pci_table[] = {
 	 .driver_data = (unsigned long) &efx_hunt_a0_nic_type},
 	{PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1a03),  /* SFC9220 VF */
 	 .driver_data = (unsigned long) &efx_hunt_a0_vf_nic_type},
+	{PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0b03),  /* SFC9250 PF */
+	 .driver_data = (unsigned long) &efx_hunt_a0_nic_type},
+	{PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x1b03),  /* SFC9250 VF */
+	 .driver_data = (unsigned long) &efx_hunt_a0_vf_nic_type},
 	{0}			/* end of list */
 };
 
@@ -2977,6 +2982,7 @@ static int efx_init_struct(struct efx_nic *efx,
 	efx->rx_packet_ts_offset =
 		efx->type->rx_ts_offset - efx->type->rx_prefix_size;
 	spin_lock_init(&efx->stats_lock);
+	efx->vi_stride = EFX_DEFAULT_VI_STRIDE;
 	mutex_init(&efx->mac_lock);
 	efx->phy_op = &efx_dummy_phy_operations;
 	efx->mdio.dev = net_dev;
diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h
index 52c84b782901..16da3e9a6000 100644
--- a/drivers/net/ethernet/sfc/efx.h
+++ b/drivers/net/ethernet/sfc/efx.h
@@ -14,11 +14,6 @@
 #include "net_driver.h"
 #include "filter.h"
 
-/* All controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
-/* All VFs use BAR 0/1 for memory */
-#define EFX_MEM_BAR 2
-#define EFX_MEM_VF_BAR 0
-
 int efx_net_open(struct net_device *net_dev);
 int efx_net_stop(struct net_device *net_dev);
 
diff --git a/drivers/net/ethernet/sfc/io.h b/drivers/net/ethernet/sfc/io.h
index afb94aa2c15e..89563170af52 100644
--- a/drivers/net/ethernet/sfc/io.h
+++ b/drivers/net/ethernet/sfc/io.h
@@ -222,18 +222,21 @@ static inline void efx_reado_table(struct efx_nic *efx, efx_oword_t *value,
 	efx_reado(efx, value, reg + index * sizeof(efx_oword_t));
 }
 
-/* Page size used as step between per-VI registers */
-#define EFX_VI_PAGE_SIZE 0x2000
+/* default VI stride (step between per-VI registers) is 8K */
+#define EFX_DEFAULT_VI_STRIDE 0x2000
 
 /* Calculate offset to page-mapped register */
-#define EFX_PAGED_REG(page, reg) \
-	((page) * EFX_VI_PAGE_SIZE + (reg))
+static inline unsigned int efx_paged_reg(struct efx_nic *efx, unsigned int page,
+					 unsigned int reg)
+{
+	return page * efx->vi_stride + reg;
+}
 
 /* Write the whole of RX_DESC_UPD or TX_DESC_UPD */
 static inline void _efx_writeo_page(struct efx_nic *efx, efx_oword_t *value,
 				    unsigned int reg, unsigned int page)
 {
-	reg = EFX_PAGED_REG(page, reg);
+	reg = efx_paged_reg(efx, page, reg);
 
 	netif_vdbg(efx, hw, efx->net_dev,
 		   "writing register %x with " EFX_OWORD_FMT "\n", reg,
@@ -262,7 +265,7 @@ static inline void
 _efx_writed_page(struct efx_nic *efx, const efx_dword_t *value,
 		 unsigned int reg, unsigned int page)
 {
-	efx_writed(efx, value, EFX_PAGED_REG(page, reg));
+	efx_writed(efx, value, efx_paged_reg(efx, page, reg));
 }
 #define efx_writed_page(efx, value, reg, page)				\
 	_efx_writed_page(efx, value,					\
@@ -288,10 +291,10 @@ static inline void _efx_writed_page_locked(struct efx_nic *efx,
 
 	if (page == 0) {
 		spin_lock_irqsave(&efx->biu_lock, flags);
-		efx_writed(efx, value, EFX_PAGED_REG(page, reg));
+		efx_writed(efx, value, efx_paged_reg(efx, page, reg));
 		spin_unlock_irqrestore(&efx->biu_lock, flags);
 	} else {
-		efx_writed(efx, value, EFX_PAGED_REG(page, reg));
+		efx_writed(efx, value, efx_paged_reg(efx, page, reg));
 	}
 }
 #define efx_writed_page_locked(efx, value, reg, page)			\
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index 154ef41d1927..ebd95972ae7b 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -208,6 +208,9 @@ void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
 #define _MCDI_DWORD(_buf, _field)					\
 	((_buf) + (_MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, 4) >> 2))
 
+#define MCDI_BYTE(_buf, _field)						\
+	((void)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 1),	\
+	 *MCDI_PTR(_buf, _field))
 #define MCDI_WORD(_buf, _field)						\
 	((u16)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) +	\
 	 le16_to_cpu(*(__force const __le16 *)MCDI_PTR(_buf, _field)))
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index c0537ea06c9a..6b8730a24513 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -708,6 +708,7 @@ struct vfdi_status;
  * @reset_work: Scheduled reset workitem
  * @membase_phys: Memory BAR value as physical address
  * @membase: Memory BAR value
+ * @vi_stride: step between per-VI registers / memory regions
  * @interrupt_mode: Interrupt mode
  * @timer_quantum_ns: Interrupt timer quantum, in nanoseconds
  * @timer_max_ns: Interrupt timer maximum value, in nanoseconds
@@ -812,6 +813,7 @@ struct vfdi_status;
  * @vf_init_count: Number of VFs that have been fully initialised.
  * @vi_scale: log2 number of vnics per VF.
  * @ptp_data: PTP state data
+ * @ptp_warned: has this NIC seen and warned about unexpected PTP events?
  * @vpd_sn: Serial number read from VPD
  * @monitor_work: Hardware monitor workitem
  * @biu_lock: BIU (bus interface unit) lock
@@ -842,6 +844,8 @@ struct efx_nic {
 	resource_size_t membase_phys;
 	void __iomem *membase;
 
+	unsigned int vi_stride;
+
 	enum efx_int_mode interrupt_mode;
 	unsigned int timer_quantum_ns;
 	unsigned int timer_max_ns;
@@ -965,6 +969,7 @@ struct efx_nic {
 #endif
 
 	struct efx_ptp_data *ptp_data;
+	bool ptp_warned;
 
 	char *vpd_sn;
 
@@ -1154,7 +1159,7 @@ struct efx_udp_tunnel {
  */
 struct efx_nic_type {
 	bool is_vf;
-	unsigned int mem_bar;
+	unsigned int (*mem_bar)(struct efx_nic *efx);
 	unsigned int (*mem_map_size)(struct efx_nic *efx);
 	int (*probe)(struct efx_nic *efx);
 	void (*remove)(struct efx_nic *efx);
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index caa89bf7603e..3b37d7ded3c4 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -1662,9 +1662,11 @@ void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev)
 	int code = EFX_QWORD_FIELD(*ev, MCDI_EVENT_CODE);
 
 	if (!ptp) {
-		if (net_ratelimit())
+		if (!efx->ptp_warned) {
 			netif_warn(efx, drv, efx->net_dev,
 				   "Received PTP event but PTP not set up\n");
+			efx->ptp_warned = true;
+		}
 		return;
 	}
 
diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c
index a617f657eae3..22d49ebb347c 100644
--- a/drivers/net/ethernet/sfc/siena.c
+++ b/drivers/net/ethernet/sfc/siena.c
@@ -242,6 +242,14 @@ static int siena_dimension_resources(struct efx_nic *efx)
 	return 0;
 }
 
+/* On all Falcon-architecture NICs, PFs use BAR 0 for I/O space and BAR 2(&3)
+ * for memory.
+ */
+static unsigned int siena_mem_bar(struct efx_nic *efx)
+{
+	return 2;
+}
+
 static unsigned int siena_mem_map_size(struct efx_nic *efx)
 {
 	return FR_CZ_MC_TREG_SMEM +
@@ -950,7 +958,7 @@ fail:
 
 const struct efx_nic_type siena_a0_nic_type = {
 	.is_vf = false,
-	.mem_bar = EFX_MEM_BAR,
+	.mem_bar = siena_mem_bar,
 	.mem_map_size = siena_mem_map_size,
 	.probe = siena_probe_nic,
 	.remove = siena_remove_nic,