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Diffstat (limited to 'target/linux/ixp4xx/patches-3.18/002-ixp4xx_eth-use-parent-device-for-dma-allocations.patch')
-rw-r--r--target/linux/ixp4xx/patches-3.18/002-ixp4xx_eth-use-parent-device-for-dma-allocations.patch95
1 files changed, 95 insertions, 0 deletions
diff --git a/target/linux/ixp4xx/patches-3.18/002-ixp4xx_eth-use-parent-device-for-dma-allocations.patch b/target/linux/ixp4xx/patches-3.18/002-ixp4xx_eth-use-parent-device-for-dma-allocations.patch
new file mode 100644
index 0000000..702d182
--- /dev/null
+++ b/target/linux/ixp4xx/patches-3.18/002-ixp4xx_eth-use-parent-device-for-dma-allocations.patch
@@ -0,0 +1,95 @@
+From 1d67040af0144c549f4db8144d2ccc253ff8639c Mon Sep 17 00:00:00 2001
+From: Jonas Gorski <jogo@openwrt.org>
+Date: Mon, 1 Jul 2013 16:39:28 +0200
+Subject: [PATCH 2/2] net: ixp4xx_eth: use parent device for dma allocations
+
+Now that the platfomr device provides a dma_cohorent_mask, use it for
+dma operations.
+
+This fixes ethernet on ixp4xx which was broken since 3.7.
+
+Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+---
+ drivers/net/ethernet/xscale/ixp4xx_eth.c | 23 ++++++++++++-----------
+ 1 file changed, 12 insertions(+), 11 deletions(-)
+
+--- a/drivers/net/ethernet/xscale/ixp4xx_eth.c
++++ b/drivers/net/ethernet/xscale/ixp4xx_eth.c
+@@ -661,10 +661,10 @@ static inline void queue_put_desc(unsign
+ static inline void dma_unmap_tx(struct port *port, struct desc *desc)
+ {
+ #ifdef __ARMEB__
+- dma_unmap_single(&port->netdev->dev, desc->data,
++ dma_unmap_single(port->netdev->dev.parent, desc->data,
+ desc->buf_len, DMA_TO_DEVICE);
+ #else
+- dma_unmap_single(&port->netdev->dev, desc->data & ~3,
++ dma_unmap_single(port->netdev->dev.parent, desc->data & ~3,
+ ALIGN((desc->data & 3) + desc->buf_len, 4),
+ DMA_TO_DEVICE);
+ #endif
+@@ -731,9 +731,9 @@ static int eth_poll(struct napi_struct *
+
+ #ifdef __ARMEB__
+ if ((skb = netdev_alloc_skb(dev, RX_BUFF_SIZE))) {
+- phys = dma_map_single(&dev->dev, skb->data,
++ phys = dma_map_single(dev->dev.parent, skb->data,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+- if (dma_mapping_error(&dev->dev, phys)) {
++ if (dma_mapping_error(dev->dev.parent, phys)) {
+ dev_kfree_skb(skb);
+ skb = NULL;
+ }
+@@ -756,10 +756,11 @@ static int eth_poll(struct napi_struct *
+ #ifdef __ARMEB__
+ temp = skb;
+ skb = port->rx_buff_tab[n];
+- dma_unmap_single(&dev->dev, desc->data - NET_IP_ALIGN,
++ dma_unmap_single(dev->dev.parent, desc->data - NET_IP_ALIGN,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+ #else
+- dma_sync_single_for_cpu(&dev->dev, desc->data - NET_IP_ALIGN,
++ dma_sync_single_for_cpu(dev->dev.parent,
++ desc->data - NET_IP_ALIGN,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+ memcpy_swab32((u32 *)skb->data, (u32 *)port->rx_buff_tab[n],
+ ALIGN(NET_IP_ALIGN + desc->pkt_len, 4) / 4);
+@@ -878,7 +879,7 @@ static int eth_xmit(struct sk_buff *skb,
+ memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4);
+ #endif
+
+- phys = dma_map_single(&dev->dev, mem, bytes, DMA_TO_DEVICE);
++ phys = dma_map_single(dev->dev.parent, mem, bytes, DMA_TO_DEVICE);
+ if (dma_mapping_error(&dev->dev, phys)) {
+ dev_kfree_skb(skb);
+ #ifndef __ARMEB__
+@@ -1128,7 +1129,7 @@ static int init_queues(struct port *port
+ int i;
+
+ if (!ports_open) {
+- dma_pool = dma_pool_create(DRV_NAME, &port->netdev->dev,
++ dma_pool = dma_pool_create(DRV_NAME, port->netdev->dev.parent,
+ POOL_ALLOC_SIZE, 32, 0);
+ if (!dma_pool)
+ return -ENOMEM;
+@@ -1156,9 +1157,9 @@ static int init_queues(struct port *port
+ data = buff;
+ #endif
+ desc->buf_len = MAX_MRU;
+- desc->data = dma_map_single(&port->netdev->dev, data,
++ desc->data = dma_map_single(port->netdev->dev.parent, data,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+- if (dma_mapping_error(&port->netdev->dev, desc->data)) {
++ if (dma_mapping_error(port->netdev->dev.parent, desc->data)) {
+ free_buffer(buff);
+ return -EIO;
+ }
+@@ -1178,7 +1179,7 @@ static void destroy_queues(struct port *
+ struct desc *desc = rx_desc_ptr(port, i);
+ buffer_t *buff = port->rx_buff_tab[i];
+ if (buff) {
+- dma_unmap_single(&port->netdev->dev,
++ dma_unmap_single(port->netdev->dev.parent,
+ desc->data - NET_IP_ALIGN,
+ RX_BUFF_SIZE, DMA_FROM_DEVICE);
+ free_buffer(buff);