Merge branch 'bnxt_en-Add-support-for-new-57500-chips'

Michael Chan says:

====================
bnxt_en: Add support for new 57500 chips.

This patch-set is larger than normal because I wanted a complete series
to add basic support for the new 57500 chips.  The new chips have the
following main differences compared to legacy chips:

1. Requires the PF driver to allocate DMA context memory as a backing
store.
2. New NQ (notification queue) for interrupt events.
3. One or more CP rings can be associated with an NQ.
4. 64-bit doorbells.

Most other structures and firmware APIs are compatible with legacy
devices with some exceptions.  For example, ring groups are no longer
used and RSS table format has changed.

The patch-set includes the usual firmware spec. update, some refactoring
and restructuring, and adding the new code to add basic support for the
new class of devices.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c

@@ -148,6 +148,65 @@ static int bnxt_set_coalesce(struct net_device *dev,
 #define BNXT_RX_STATS_EXT_ENTRY(counter)	\
 	{ BNXT_RX_STATS_EXT_OFFSET(counter), __stringify(counter) }
 
+#define BNXT_TX_STATS_EXT_ENTRY(counter)	\
+	{ BNXT_TX_STATS_EXT_OFFSET(counter), __stringify(counter) }
+
+#define BNXT_RX_STATS_EXT_PFC_ENTRY(n)				\
+	BNXT_RX_STATS_EXT_ENTRY(pfc_pri##n##_rx_duration_us),	\
+	BNXT_RX_STATS_EXT_ENTRY(pfc_pri##n##_rx_transitions)
+
+#define BNXT_TX_STATS_EXT_PFC_ENTRY(n)				\
+	BNXT_TX_STATS_EXT_ENTRY(pfc_pri##n##_tx_duration_us),	\
+	BNXT_TX_STATS_EXT_ENTRY(pfc_pri##n##_tx_transitions)
+
+#define BNXT_RX_STATS_EXT_PFC_ENTRIES				\
+	BNXT_RX_STATS_EXT_PFC_ENTRY(0),				\
+	BNXT_RX_STATS_EXT_PFC_ENTRY(1),				\
+	BNXT_RX_STATS_EXT_PFC_ENTRY(2),				\
+	BNXT_RX_STATS_EXT_PFC_ENTRY(3),				\
+	BNXT_RX_STATS_EXT_PFC_ENTRY(4),				\
+	BNXT_RX_STATS_EXT_PFC_ENTRY(5),				\
+	BNXT_RX_STATS_EXT_PFC_ENTRY(6),				\
+	BNXT_RX_STATS_EXT_PFC_ENTRY(7)
+
+#define BNXT_TX_STATS_EXT_PFC_ENTRIES				\
+	BNXT_TX_STATS_EXT_PFC_ENTRY(0),				\
+	BNXT_TX_STATS_EXT_PFC_ENTRY(1),				\
+	BNXT_TX_STATS_EXT_PFC_ENTRY(2),				\
+	BNXT_TX_STATS_EXT_PFC_ENTRY(3),				\
+	BNXT_TX_STATS_EXT_PFC_ENTRY(4),				\
+	BNXT_TX_STATS_EXT_PFC_ENTRY(5),				\
+	BNXT_TX_STATS_EXT_PFC_ENTRY(6),				\
+	BNXT_TX_STATS_EXT_PFC_ENTRY(7)
+
+#define BNXT_RX_STATS_EXT_COS_ENTRY(n)				\
+	BNXT_RX_STATS_EXT_ENTRY(rx_bytes_cos##n),		\
+	BNXT_RX_STATS_EXT_ENTRY(rx_packets_cos##n)
+
+#define BNXT_TX_STATS_EXT_COS_ENTRY(n)				\
+	BNXT_TX_STATS_EXT_ENTRY(tx_bytes_cos##n),		\
+	BNXT_TX_STATS_EXT_ENTRY(tx_packets_cos##n)
+
+#define BNXT_RX_STATS_EXT_COS_ENTRIES				\
+	BNXT_RX_STATS_EXT_COS_ENTRY(0),				\
+	BNXT_RX_STATS_EXT_COS_ENTRY(1),				\
+	BNXT_RX_STATS_EXT_COS_ENTRY(2),				\
+	BNXT_RX_STATS_EXT_COS_ENTRY(3),				\
+	BNXT_RX_STATS_EXT_COS_ENTRY(4),				\
+	BNXT_RX_STATS_EXT_COS_ENTRY(5),				\
+	BNXT_RX_STATS_EXT_COS_ENTRY(6),				\
+	BNXT_RX_STATS_EXT_COS_ENTRY(7)				\
+
+#define BNXT_TX_STATS_EXT_COS_ENTRIES				\
+	BNXT_TX_STATS_EXT_COS_ENTRY(0),				\
+	BNXT_TX_STATS_EXT_COS_ENTRY(1),				\
+	BNXT_TX_STATS_EXT_COS_ENTRY(2),				\
+	BNXT_TX_STATS_EXT_COS_ENTRY(3),				\
+	BNXT_TX_STATS_EXT_COS_ENTRY(4),				\
+	BNXT_TX_STATS_EXT_COS_ENTRY(5),				\
+	BNXT_TX_STATS_EXT_COS_ENTRY(6),				\
+	BNXT_TX_STATS_EXT_COS_ENTRY(7)				\
+
 enum {
 	RX_TOTAL_DISCARDS,
 	TX_TOTAL_DISCARDS,
@@ -256,11 +315,20 @@ static const struct {
 	BNXT_RX_STATS_EXT_ENTRY(resume_pause_events),
 	BNXT_RX_STATS_EXT_ENTRY(continuous_roce_pause_events),
 	BNXT_RX_STATS_EXT_ENTRY(resume_roce_pause_events),
+	BNXT_RX_STATS_EXT_COS_ENTRIES,
+	BNXT_RX_STATS_EXT_PFC_ENTRIES,
+};
+
+static const struct {
+	long offset;
+	char string[ETH_GSTRING_LEN];
+} bnxt_tx_port_stats_ext_arr[] = {
+	BNXT_TX_STATS_EXT_COS_ENTRIES,
+	BNXT_TX_STATS_EXT_PFC_ENTRIES,
 };
 
 #define BNXT_NUM_SW_FUNC_STATS	ARRAY_SIZE(bnxt_sw_func_stats)
 #define BNXT_NUM_PORT_STATS ARRAY_SIZE(bnxt_port_stats_arr)
-#define BNXT_NUM_PORT_STATS_EXT ARRAY_SIZE(bnxt_port_stats_ext_arr)
 
 static int bnxt_get_num_stats(struct bnxt *bp)
 {
@@ -272,7 +340,8 @@ static int bnxt_get_num_stats(struct bnxt *bp)
 		num_stats += BNXT_NUM_PORT_STATS;
 
 	if (bp->flags & BNXT_FLAG_PORT_STATS_EXT)
-		num_stats += BNXT_NUM_PORT_STATS_EXT;
+		num_stats += bp->fw_rx_stats_ext_size +
+			     bp->fw_tx_stats_ext_size;
 
 	return num_stats;
 }
@@ -334,12 +403,17 @@ static void bnxt_get_ethtool_stats(struct net_device *dev,
 		}
 	}
 	if (bp->flags & BNXT_FLAG_PORT_STATS_EXT) {
-		__le64 *port_stats_ext = (__le64 *)bp->hw_rx_port_stats_ext;
+		__le64 *rx_port_stats_ext = (__le64 *)bp->hw_rx_port_stats_ext;
+		__le64 *tx_port_stats_ext = (__le64 *)bp->hw_tx_port_stats_ext;
 
-		for (i = 0; i < BNXT_NUM_PORT_STATS_EXT; i++, j++) {
-			buf[j] = le64_to_cpu(*(port_stats_ext +
+		for (i = 0; i < bp->fw_rx_stats_ext_size; i++, j++) {
+			buf[j] = le64_to_cpu(*(rx_port_stats_ext +
 					    bnxt_port_stats_ext_arr[i].offset));
 		}
+		for (i = 0; i < bp->fw_tx_stats_ext_size; i++, j++) {
+			buf[j] = le64_to_cpu(*(tx_port_stats_ext +
+					bnxt_tx_port_stats_ext_arr[i].offset));
+		}
 	}
 }
 
@@ -407,10 +481,15 @@ static void bnxt_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
 			}
 		}
 		if (bp->flags & BNXT_FLAG_PORT_STATS_EXT) {
-			for (i = 0; i < BNXT_NUM_PORT_STATS_EXT; i++) {
+			for (i = 0; i < bp->fw_rx_stats_ext_size; i++) {
 				strcpy(buf, bnxt_port_stats_ext_arr[i].string);
 				buf += ETH_GSTRING_LEN;
 			}
+			for (i = 0; i < bp->fw_tx_stats_ext_size; i++) {
+				strcpy(buf,
+				       bnxt_tx_port_stats_ext_arr[i].string);
+				buf += ETH_GSTRING_LEN;
+			}
 		}
 		break;
 	case ETH_SS_TEST:
@@ -2419,11 +2498,11 @@ static int bnxt_hwrm_phy_loopback(struct bnxt *bp, bool enable, bool ext)
 	return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 }
 
-static int bnxt_rx_loopback(struct bnxt *bp, struct bnxt_napi *bnapi,
+static int bnxt_rx_loopback(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
 			    u32 raw_cons, int pkt_size)
 {
-	struct bnxt_cp_ring_info *cpr = &bnapi->cp_ring;
-	struct bnxt_rx_ring_info *rxr = bnapi->rx_ring;
+	struct bnxt_napi *bnapi = cpr->bnapi;
+	struct bnxt_rx_ring_info *rxr;
 	struct bnxt_sw_rx_bd *rx_buf;
 	struct rx_cmp *rxcmp;
 	u16 cp_cons, cons;
@@ -2431,6 +2510,7 @@ static int bnxt_rx_loopback(struct bnxt *bp, struct bnxt_napi *bnapi,
 	u32 len;
 	int i;
 
+	rxr = bnapi->rx_ring;
 	cp_cons = RING_CMP(raw_cons);
 	rxcmp = (struct rx_cmp *)
 		&cpr->cp_desc_ring[CP_RING(cp_cons)][CP_IDX(cp_cons)];
@@ -2451,17 +2531,15 @@ static int bnxt_rx_loopback(struct bnxt *bp, struct bnxt_napi *bnapi,
 	return 0;
 }
 
-static int bnxt_poll_loopback(struct bnxt *bp, int pkt_size)
+static int bnxt_poll_loopback(struct bnxt *bp, struct bnxt_cp_ring_info *cpr,
+			      int pkt_size)
 {
-	struct bnxt_napi *bnapi = bp->bnapi[0];
-	struct bnxt_cp_ring_info *cpr;
 	struct tx_cmp *txcmp;
 	int rc = -EIO;
 	u32 raw_cons;
 	u32 cons;
 	int i;
 
-	cpr = &bnapi->cp_ring;
 	raw_cons = cpr->cp_raw_cons;
 	for (i = 0; i < 200; i++) {
 		cons = RING_CMP(raw_cons);
@@ -2477,7 +2555,7 @@ static int bnxt_poll_loopback(struct bnxt *bp, int pkt_size)
 		 */
 		dma_rmb();
 		if (TX_CMP_TYPE(txcmp) == CMP_TYPE_RX_L2_CMP) {
-			rc = bnxt_rx_loopback(bp, bnapi, raw_cons, pkt_size);
+			rc = bnxt_rx_loopback(bp, cpr, raw_cons, pkt_size);
 			raw_cons = NEXT_RAW_CMP(raw_cons);
 			raw_cons = NEXT_RAW_CMP(raw_cons);
 			break;
@@ -2491,12 +2569,14 @@ static int bnxt_poll_loopback(struct bnxt *bp, int pkt_size)
 static int bnxt_run_loopback(struct bnxt *bp)
 {
 	struct bnxt_tx_ring_info *txr = &bp->tx_ring[0];
+	struct bnxt_cp_ring_info *cpr;
 	int pkt_size, i = 0;
 	struct sk_buff *skb;
 	dma_addr_t map;
 	u8 *data;
 	int rc;
 
+	cpr = &txr->bnapi->cp_ring;
 	pkt_size = min(bp->dev->mtu + ETH_HLEN, bp->rx_copy_thresh);
 	skb = netdev_alloc_skb(bp->dev, pkt_size);
 	if (!skb)
@@ -2520,8 +2600,8 @@ static int bnxt_run_loopback(struct bnxt *bp)
 	/* Sync BD data before updating doorbell */
 	wmb();
 
-	bnxt_db_write(bp, txr->tx_doorbell, DB_KEY_TX | txr->tx_prod);
-	rc = bnxt_poll_loopback(bp, pkt_size);
+	bnxt_db_write(bp, &txr->tx_db, txr->tx_prod);
+	rc = bnxt_poll_loopback(bp, cpr, pkt_size);
 
 	dma_unmap_single(&bp->pdev->dev, map, pkt_size, PCI_DMA_TODEVICE);
 	dev_kfree_skb(skb);

drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c

@@ -63,7 +63,7 @@ void bnxt_tx_int_xdp(struct bnxt *bp, struct bnxt_napi *bnapi, int nr_pkts)
 		tx_buf = &txr->tx_buf_ring[last_tx_cons];
 		rx_prod = tx_buf->rx_prod;
 	}
-	bnxt_db_write(bp, rxr->rx_doorbell, DB_KEY_RX | rx_prod);
+	bnxt_db_write(bp, &rxr->rx_db, rx_prod);
 }
 
 /* returns the following: