openwrt/target/linux/generic/patches-3.10/770-bgmac-backport.patch

patches for bgmac backported from net-next/master

--- a/drivers/net/ethernet/broadcom/Kconfig
+++ b/drivers/net/ethernet/broadcom/Kconfig
@@ -132,7 +132,8 @@ config BNX2X_SRIOV
 
 config BGMAC
 	tristate "BCMA bus GBit core support"
-	depends on BCMA_HOST_SOC && HAS_DMA
+	depends on BCMA_HOST_SOC && HAS_DMA && BCM47XX
+	select PHYLIB
 	---help---
 	  This driver supports GBit MAC and BCM4706 GBit MAC cores on BCMA bus.
 	  They can be found on BCM47xx SoCs and provide gigabit ethernet.
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -149,6 +149,8 @@ static netdev_tx_t bgmac_dma_tx_add(stru
 	dma_desc->ctl0 = cpu_to_le32(ctl0);
 	dma_desc->ctl1 = cpu_to_le32(ctl1);
 
+	netdev_sent_queue(net_dev, skb->len);
+
 	wmb();
 
 	/* Increase ring->end to point empty slot. We tell hardware the first
@@ -157,6 +159,7 @@ static netdev_tx_t bgmac_dma_tx_add(stru
 	if (++ring->end >= BGMAC_TX_RING_SLOTS)
 		ring->end = 0;
 	bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_INDEX,
+		    ring->index_base +
 		    ring->end * sizeof(struct bgmac_dma_desc));
 
 	/* Always keep one slot free to allow detecting bugged calls. */
@@ -177,10 +180,13 @@ static void bgmac_dma_tx_free(struct bgm
 	struct device *dma_dev = bgmac->core->dma_dev;
 	int empty_slot;
 	bool freed = false;
+	unsigned bytes_compl = 0, pkts_compl = 0;
 
 	/* The last slot that hardware didn't consume yet */
 	empty_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_TX_STATUS);
 	empty_slot &= BGMAC_DMA_TX_STATDPTR;
+	empty_slot -= ring->index_base;
+	empty_slot &= BGMAC_DMA_TX_STATDPTR;
 	empty_slot /= sizeof(struct bgmac_dma_desc);
 
 	while (ring->start != empty_slot) {
@@ -192,6 +198,9 @@ static void bgmac_dma_tx_free(struct bgm
 					 slot->skb->len, DMA_TO_DEVICE);
 			slot->dma_addr = 0;
 
+			bytes_compl += slot->skb->len;
+			pkts_compl++;
+
 			/* Free memory! :) */
 			dev_kfree_skb(slot->skb);
 			slot->skb = NULL;
@@ -205,6 +214,8 @@ static void bgmac_dma_tx_free(struct bgm
 		freed = true;
 	}
 
+	netdev_completed_queue(bgmac->net_dev, pkts_compl, bytes_compl);
+
 	if (freed && netif_queue_stopped(bgmac->net_dev))
 		netif_wake_queue(bgmac->net_dev);
 }
@@ -274,6 +285,8 @@ static int bgmac_dma_rx_read(struct bgma
 
 	end_slot = bgmac_read(bgmac, ring->mmio_base + BGMAC_DMA_RX_STATUS);
 	end_slot &= BGMAC_DMA_RX_STATDPTR;
+	end_slot -= ring->index_base;
+	end_slot &= BGMAC_DMA_RX_STATDPTR;
 	end_slot /= sizeof(struct bgmac_dma_desc);
 
 	ring->end = end_slot;
@@ -418,9 +431,6 @@ static int bgmac_dma_alloc(struct bgmac
 		ring = &bgmac->tx_ring[i];
 		ring->num_slots = BGMAC_TX_RING_SLOTS;
 		ring->mmio_base = ring_base[i];
-		if (bgmac_dma_unaligned(bgmac, ring, BGMAC_DMA_RING_TX))
-			bgmac_warn(bgmac, "TX on ring 0x%X supports unaligned addressing but this feature is not implemented\n",
-				   ring->mmio_base);
 
 		/* Alloc ring of descriptors */
 		size = ring->num_slots * sizeof(struct bgmac_dma_desc);
@@ -435,6 +445,13 @@ static int bgmac_dma_alloc(struct bgmac
 		if (ring->dma_base & 0xC0000000)
 			bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
 
+		ring->unaligned = bgmac_dma_unaligned(bgmac, ring,
+						      BGMAC_DMA_RING_TX);
+		if (ring->unaligned)
+			ring->index_base = lower_32_bits(ring->dma_base);
+		else
+			ring->index_base = 0;
+
 		/* No need to alloc TX slots yet */
 	}
 
@@ -444,9 +461,6 @@ static int bgmac_dma_alloc(struct bgmac
 		ring = &bgmac->rx_ring[i];
 		ring->num_slots = BGMAC_RX_RING_SLOTS;
 		ring->mmio_base = ring_base[i];
-		if (bgmac_dma_unaligned(bgmac, ring, BGMAC_DMA_RING_RX))
-			bgmac_warn(bgmac, "RX on ring 0x%X supports unaligned addressing but this feature is not implemented\n",
-				   ring->mmio_base);
 
 		/* Alloc ring of descriptors */
 		size = ring->num_slots * sizeof(struct bgmac_dma_desc);
@@ -462,6 +476,13 @@ static int bgmac_dma_alloc(struct bgmac
 		if (ring->dma_base & 0xC0000000)
 			bgmac_warn(bgmac, "DMA address using 0xC0000000 bit(s), it may need translation trick\n");
 
+		ring->unaligned = bgmac_dma_unaligned(bgmac, ring,
+						      BGMAC_DMA_RING_RX);
+		if (ring->unaligned)
+			ring->index_base = lower_32_bits(ring->dma_base);
+		else
+			ring->index_base = 0;
+
 		/* Alloc RX slots */
 		for (j = 0; j < ring->num_slots; j++) {
 			err = bgmac_dma_rx_skb_for_slot(bgmac, &ring->slots[j]);
@@ -489,12 +510,14 @@ static void bgmac_dma_init(struct bgmac
 	for (i = 0; i < BGMAC_MAX_TX_RINGS; i++) {
 		ring = &bgmac->tx_ring[i];
 
-		/* We don't implement unaligned addressing, so enable first */
-		bgmac_dma_tx_enable(bgmac, ring);
+		if (!ring->unaligned)
+			bgmac_dma_tx_enable(bgmac, ring);
 		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGLO,
 			    lower_32_bits(ring->dma_base));
 		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_TX_RINGHI,
 			    upper_32_bits(ring->dma_base));
+		if (ring->unaligned)
+			bgmac_dma_tx_enable(bgmac, ring);
 
 		ring->start = 0;
 		ring->end = 0;	/* Points the slot that should *not* be read */
@@ -505,12 +528,14 @@ static void bgmac_dma_init(struct bgmac
 
 		ring = &bgmac->rx_ring[i];
 
-		/* We don't implement unaligned addressing, so enable first */
-		bgmac_dma_rx_enable(bgmac, ring);
+		if (!ring->unaligned)
+			bgmac_dma_rx_enable(bgmac, ring);
 		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGLO,
 			    lower_32_bits(ring->dma_base));
 		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_RINGHI,
 			    upper_32_bits(ring->dma_base));
+		if (ring->unaligned)
+			bgmac_dma_rx_enable(bgmac, ring);
 
 		for (j = 0, dma_desc = ring->cpu_base; j < ring->num_slots;
 		     j++, dma_desc++) {
@@ -531,6 +556,7 @@ static void bgmac_dma_init(struct bgmac
 		}
 
 		bgmac_write(bgmac, ring->mmio_base + BGMAC_DMA_RX_INDEX,
+			    ring->index_base +
 			    ring->num_slots * sizeof(struct bgmac_dma_desc));
 
 		ring->start = 0;
@@ -909,9 +935,9 @@ static void bgmac_chip_reset(struct bgma
 		u8 et_swtype = 0;
 		u8 sw_type = BGMAC_CHIPCTL_1_SW_TYPE_EPHY |
 			     BGMAC_CHIPCTL_1_IF_TYPE_MII;
-		char buf[2];
+		char buf[4];
 
-		if (bcm47xx_nvram_getenv("et_swtype", buf, 1) > 0) {
+		if (bcm47xx_nvram_getenv("et_swtype", buf, sizeof(buf)) > 0) {
 			if (kstrtou8(buf, 0, &et_swtype))
 				bgmac_err(bgmac, "Failed to parse et_swtype (%s)\n",
 					  buf);
@@ -970,6 +996,8 @@ static void bgmac_chip_reset(struct bgma
 	bgmac_miiconfig(bgmac);
 	bgmac_phy_init(bgmac);
 
+	netdev_reset_queue(bgmac->net_dev);
+
 	bgmac->int_status = 0;
 }
 
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -384,6 +384,8 @@ struct bgmac_dma_ring {
 	u16 mmio_base;
 	struct bgmac_dma_desc *cpu_base;
 	dma_addr_t dma_base;
+	u32 index_base; /* Used for unaligned rings only, otherwise 0 */
+	bool unaligned;
 
 	struct bgmac_slot_info slots[BGMAC_RX_RING_SLOTS];
 };