[TG3]: consolidate all DMA water mark settings

Consolidate all DMA watermark settings for standard and jumbo frames on
all chips in tg3_init_bufmgr_config() and add new settings for 5780.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/tg3.c

@@ -9826,19 +9826,35 @@ static void __devinit tg3_init_link_config(struct tg3 *tp)
 
 static void __devinit tg3_init_bufmgr_config(struct tg3 *tp)
 {
-	tp->bufmgr_config.mbuf_read_dma_low_water =
-		DEFAULT_MB_RDMA_LOW_WATER;
-	tp->bufmgr_config.mbuf_mac_rx_low_water =
-		DEFAULT_MB_MACRX_LOW_WATER;
-	tp->bufmgr_config.mbuf_high_water =
-		DEFAULT_MB_HIGH_WATER;
-
-	tp->bufmgr_config.mbuf_read_dma_low_water_jumbo =
-		DEFAULT_MB_RDMA_LOW_WATER_JUMBO;
-	tp->bufmgr_config.mbuf_mac_rx_low_water_jumbo =
-		DEFAULT_MB_MACRX_LOW_WATER_JUMBO;
-	tp->bufmgr_config.mbuf_high_water_jumbo =
-		DEFAULT_MB_HIGH_WATER_JUMBO;
+	if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS) {
+		tp->bufmgr_config.mbuf_read_dma_low_water =
+			DEFAULT_MB_RDMA_LOW_WATER_5705;
+		tp->bufmgr_config.mbuf_mac_rx_low_water =
+			DEFAULT_MB_MACRX_LOW_WATER_5705;
+		tp->bufmgr_config.mbuf_high_water =
+			DEFAULT_MB_HIGH_WATER_5705;
+
+		tp->bufmgr_config.mbuf_read_dma_low_water_jumbo =
+			DEFAULT_MB_RDMA_LOW_WATER_JUMBO_5780;
+		tp->bufmgr_config.mbuf_mac_rx_low_water_jumbo =
+			DEFAULT_MB_MACRX_LOW_WATER_JUMBO_5780;
+		tp->bufmgr_config.mbuf_high_water_jumbo =
+			DEFAULT_MB_HIGH_WATER_JUMBO_5780;
+	} else {
+		tp->bufmgr_config.mbuf_read_dma_low_water =
+			DEFAULT_MB_RDMA_LOW_WATER;
+		tp->bufmgr_config.mbuf_mac_rx_low_water =
+			DEFAULT_MB_MACRX_LOW_WATER;
+		tp->bufmgr_config.mbuf_high_water =
+			DEFAULT_MB_HIGH_WATER;
+
+		tp->bufmgr_config.mbuf_read_dma_low_water_jumbo =
+			DEFAULT_MB_RDMA_LOW_WATER_JUMBO;
+		tp->bufmgr_config.mbuf_mac_rx_low_water_jumbo =
+			DEFAULT_MB_MACRX_LOW_WATER_JUMBO;
+		tp->bufmgr_config.mbuf_high_water_jumbo =
+			DEFAULT_MB_HIGH_WATER_JUMBO;
+	}
 
 	tp->bufmgr_config.dma_low_water = DEFAULT_DMA_LOW_WATER;
 	tp->bufmgr_config.dma_high_water = DEFAULT_DMA_HIGH_WATER;
@@ -10052,8 +10068,6 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
 
 	tg3_init_link_config(tp);
 
-	tg3_init_bufmgr_config(tp);
-
 	tp->rx_pending = TG3_DEF_RX_RING_PENDING;
 	tp->rx_jumbo_pending = TG3_DEF_RX_JUMBO_RING_PENDING;
 	tp->tx_pending = TG3_DEF_TX_RING_PENDING;
@@ -10082,14 +10096,7 @@ static int __devinit tg3_init_one(struct pci_dev *pdev,
 		goto err_out_iounmap;
 	}
 
-	if (tp->tg3_flags2 & TG3_FLG2_5705_PLUS) {
-		tp->bufmgr_config.mbuf_read_dma_low_water =
-			DEFAULT_MB_RDMA_LOW_WATER_5705;
-		tp->bufmgr_config.mbuf_mac_rx_low_water =
-			DEFAULT_MB_MACRX_LOW_WATER_5705;
-		tp->bufmgr_config.mbuf_high_water =
-			DEFAULT_MB_HIGH_WATER_5705;
-	}
+	tg3_init_bufmgr_config(tp);
 
 #if TG3_TSO_SUPPORT != 0
 	if (tp->tg3_flags2 & TG3_FLG2_HW_TSO) {

drivers/net/tg3.h

@@ -985,14 +985,17 @@
 #define  DEFAULT_MB_RDMA_LOW_WATER	 0x00000050
 #define  DEFAULT_MB_RDMA_LOW_WATER_5705	 0x00000000
 #define  DEFAULT_MB_RDMA_LOW_WATER_JUMBO 0x00000130
+#define  DEFAULT_MB_RDMA_LOW_WATER_JUMBO_5780 0x00000000
 #define BUFMGR_MB_MACRX_LOW_WATER	0x00004414
 #define  DEFAULT_MB_MACRX_LOW_WATER	  0x00000020
 #define  DEFAULT_MB_MACRX_LOW_WATER_5705  0x00000010
 #define  DEFAULT_MB_MACRX_LOW_WATER_JUMBO 0x00000098
+#define  DEFAULT_MB_MACRX_LOW_WATER_JUMBO_5780 0x0000004b
 #define BUFMGR_MB_HIGH_WATER		0x00004418
 #define  DEFAULT_MB_HIGH_WATER		 0x00000060
 #define  DEFAULT_MB_HIGH_WATER_5705	 0x00000060
 #define  DEFAULT_MB_HIGH_WATER_JUMBO	 0x0000017c
+#define  DEFAULT_MB_HIGH_WATER_JUMBO_5780 0x00000096
 #define BUFMGR_RX_MB_ALLOC_REQ		0x0000441c
 #define  BUFMGR_MB_ALLOC_BIT		 0x10000000
 #define BUFMGR_RX_MB_ALLOC_RESP		0x00004420