tg3: Add extend rx ring sizes for 5717 and 5719

This patch increases the rx ring sizes for those asic revs that support
them.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tg3.c

@@ -101,9 +101,15 @@
  * You can't change the ring sizes, but you can change where you place
  * them in the NIC onboard memory.
  */
-#define TG3_RX_STD_RING_SIZE(tp)	512
+#define TG3_RX_STD_RING_SIZE(tp) \
+	((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 || \
+	  GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719) ? \
+	 RX_STD_MAX_SIZE_5717 : 512)
 #define TG3_DEF_RX_RING_PENDING		200
-#define TG3_RX_JMB_RING_SIZE(tp)	256
+#define TG3_RX_JMB_RING_SIZE(tp) \
+	((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 || \
+	  GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719) ? \
+	 1024 : 256)
 #define TG3_DEF_RX_JUMBO_RING_PENDING	100
 #define TG3_RSS_INDIR_TBL_SIZE		128
 
@@ -113,9 +119,6 @@
  * hw multiply/modulo instructions.  Another solution would be to
  * replace things like '% foo' with '& (foo - 1)'.
  */
-#define TG3_RX_RCB_RING_SIZE(tp)	\
-	(((tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE) && \
-	  !(tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) ? 1024 : 512)
 
 #define TG3_TX_RING_SIZE		512
 #define TG3_DEF_TX_RING_PENDING		(TG3_TX_RING_SIZE - 1)
@@ -125,7 +128,7 @@
 #define TG3_RX_JMB_RING_BYTES(tp) \
 	(sizeof(struct tg3_ext_rx_buffer_desc) * TG3_RX_JMB_RING_SIZE(tp))
 #define TG3_RX_RCB_RING_BYTES(tp) \
-	(sizeof(struct tg3_rx_buffer_desc) * TG3_RX_RCB_RING_SIZE(tp))
+	(sizeof(struct tg3_rx_buffer_desc) * (tp->rx_ret_ring_mask + 1))
 #define TG3_TX_RING_BYTES	(sizeof(struct tg3_tx_buffer_desc) * \
 				 TG3_TX_RING_SIZE)
 #define NEXT_TX(N)		(((N) + 1) & (TG3_TX_RING_SIZE - 1))
@@ -4724,7 +4727,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget)
 		}
 next_pkt_nopost:
 		sw_idx++;
-		sw_idx &= (TG3_RX_RCB_RING_SIZE(tp) - 1);
+		sw_idx &= tp->rx_ret_ring_mask;
 
 		/* Refresh hw_idx to see if there is new work */
 		if (sw_idx == hw_idx) {
@@ -7612,8 +7615,8 @@ static void tg3_rings_reset(struct tg3 *tp)
 
 	if (tnapi->rx_rcb) {
 		tg3_set_bdinfo(tp, rxrcb, tnapi->rx_rcb_mapping,
-			       (TG3_RX_RCB_RING_SIZE(tp) <<
-				BDINFO_FLAGS_MAXLEN_SHIFT), 0);
+			       (tp->rx_ret_ring_mask + 1) <<
+				BDINFO_FLAGS_MAXLEN_SHIFT, 0);
 		rxrcb += TG3_BDINFO_SIZE;
 	}
 
@@ -7636,7 +7639,7 @@ static void tg3_rings_reset(struct tg3 *tp)
 		}
 
 		tg3_set_bdinfo(tp, rxrcb, tnapi->rx_rcb_mapping,
-			       (TG3_RX_RCB_RING_SIZE(tp) <<
+			       ((tp->rx_ret_ring_mask + 1) <<
 				BDINFO_FLAGS_MAXLEN_SHIFT), 0);
 
 		stblk += 8;
@@ -7949,10 +7952,14 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 			     BDINFO_FLAGS_DISABLED);
 		}
 
-		if (tp->tg3_flags3 & TG3_FLG3_5717_PLUS)
-			val = (RX_STD_MAX_SIZE_5705 << BDINFO_FLAGS_MAXLEN_SHIFT) |
-			      (TG3_RX_STD_DMA_SZ << 2);
-		else
+		if (tp->tg3_flags3 & TG3_FLG3_5717_PLUS) {
+			if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_57765)
+				val = RX_STD_MAX_SIZE_5705;
+			else
+				val = RX_STD_MAX_SIZE_5717;
+			val <<= BDINFO_FLAGS_MAXLEN_SHIFT;
+			val |= (TG3_RX_STD_DMA_SZ << 2);
+		} else
 			val = TG3_RX_STD_DMA_SZ << BDINFO_FLAGS_MAXLEN_SHIFT;
 	} else
 		val = RX_STD_MAX_SIZE_5705 << BDINFO_FLAGS_MAXLEN_SHIFT;
@@ -8235,7 +8242,11 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
 
 	tw32(SNDBDC_MODE, SNDBDC_MODE_ENABLE | SNDBDC_MODE_ATTN_ENABLE);
 	tw32(RCVBDI_MODE, RCVBDI_MODE_ENABLE | RCVBDI_MODE_RCB_ATTN_ENAB);
-	tw32(RCVDBDI_MODE, RCVDBDI_MODE_ENABLE | RCVDBDI_MODE_INV_RING_SZ);
+	val = RCVDBDI_MODE_ENABLE | RCVDBDI_MODE_INV_RING_SZ;
+	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
+	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
+		val |= RCVDBDI_MODE_LRG_RING_SZ;
+	tw32(RCVDBDI_MODE, val);
 	tw32(SNDDATAI_MODE, SNDDATAI_MODE_ENABLE);
 	if (tp->tg3_flags2 & TG3_FLG2_HW_TSO)
 		tw32(SNDDATAI_MODE, SNDDATAI_MODE_ENABLE | 0x8);
@@ -12851,6 +12862,18 @@ static void inline vlan_features_add(struct net_device *dev, unsigned long flags
 #endif
 }
 
+static inline u32 tg3_rx_ret_ring_size(struct tg3 *tp)
+{
+	if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717 ||
+	    GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719)
+		return 4096;
+	else if ((tp->tg3_flags & TG3_FLAG_JUMBO_CAPABLE) &&
+		 !(tp->tg3_flags2 & TG3_FLG2_5780_CLASS))
+		return 1024;
+	else
+		return 512;
+}
+
 static int __devinit tg3_get_invariants(struct tg3 *tp)
 {
 	static struct pci_device_id write_reorder_chipsets[] = {
@@ -13606,6 +13629,8 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
 
 	tp->rx_std_ring_mask = TG3_RX_STD_RING_SIZE(tp) - 1;
 	tp->rx_jmb_ring_mask = TG3_RX_JMB_RING_SIZE(tp) - 1;
+	tp->rx_ret_ring_mask = tg3_rx_ret_ring_size(tp) - 1;
+
 	tp->rx_std_max_post = tp->rx_std_ring_mask + 1;
 
 	/* Increment the rx prod index on the rx std ring by at most

drivers/net/tg3.h

@@ -26,6 +26,7 @@
 #define TG3_RX_INTERNAL_RING_SZ_5906	32
 
 #define RX_STD_MAX_SIZE_5705		512
+#define RX_STD_MAX_SIZE_5717		2048
 #define RX_JUMBO_MAX_SIZE		0xdeadbeef /* XXX */
 
 /* First 256 bytes are a mirror of PCI config space. */
@@ -972,6 +973,7 @@
 #define  RCVDBDI_MODE_JUMBOBD_NEEDED	 0x00000004
 #define  RCVDBDI_MODE_FRM_TOO_BIG	 0x00000008
 #define  RCVDBDI_MODE_INV_RING_SZ	 0x00000010
+#define  RCVDBDI_MODE_LRG_RING_SZ	 0x00010000
 #define RCVDBDI_STATUS			0x00002404
 #define  RCVDBDI_STATUS_JUMBOBD_NEEDED	 0x00000004
 #define  RCVDBDI_STATUS_FRM_TOO_BIG	 0x00000008
@@ -2764,6 +2766,7 @@ struct tg3 {
 	u32				rx_copy_thresh;
 	u32				rx_std_ring_mask;
 	u32				rx_jmb_ring_mask;
+	u32				rx_ret_ring_mask;
 	u32				rx_pending;
 	u32				rx_jumbo_pending;
 	u32				rx_std_max_post;