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authorMax Filippov <jcmvbkbc@gmail.com>2015-09-22 14:27:16 +0300
committerDavid S. Miller <davem@davemloft.net>2015-09-23 15:33:15 -0700
commit06e60e5912c0373b15143cc52e4a11fafeaafff3 (patch)
tree3a42dbd67edfbdd0d4169fb398828b418b24b256
parent1bb6aa56bb388ac4f7dba226aa55142fa8c65361 (diff)
downloadlinux-sh-06e60e5912c0373b15143cc52e4a11fafeaafff3.tar.gz
net/ethoc: support big-endian register layout
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/ethoc.c14
-rw-r--r--include/net/ethoc.h1
2 files changed, 13 insertions, 2 deletions
diff --git a/drivers/net/ethernet/ethoc.c b/drivers/net/ethernet/ethoc.c
index a2c96fd88393..ff665493ca97 100644
--- a/drivers/net/ethernet/ethoc.c
+++ b/drivers/net/ethernet/ethoc.c
@@ -201,6 +201,7 @@ struct ethoc {
void __iomem *membase;
int dma_alloc;
resource_size_t io_region_size;
+ bool big_endian;
unsigned int num_bd;
unsigned int num_tx;
@@ -236,12 +237,18 @@ struct ethoc_bd {
static inline u32 ethoc_read(struct ethoc *dev, loff_t offset)
{
- return ioread32(dev->iobase + offset);
+ if (dev->big_endian)
+ return ioread32be(dev->iobase + offset);
+ else
+ return ioread32(dev->iobase + offset);
}
static inline void ethoc_write(struct ethoc *dev, loff_t offset, u32 data)
{
- iowrite32(data, dev->iobase + offset);
+ if (dev->big_endian)
+ iowrite32be(data, dev->iobase + offset);
+ else
+ iowrite32(data, dev->iobase + offset);
}
static inline void ethoc_read_bd(struct ethoc *dev, int index,
@@ -1106,6 +1113,9 @@ static int ethoc_probe(struct platform_device *pdev)
priv->dma_alloc = buffer_size;
}
+ priv->big_endian = pdata ? pdata->big_endian :
+ of_device_is_big_endian(pdev->dev.of_node);
+
/* calculate the number of TX/RX buffers, maximum 128 supported */
num_bd = min_t(unsigned int,
128, (netdev->mem_end - netdev->mem_start + 1) / ETHOC_BUFSIZ);
diff --git a/include/net/ethoc.h b/include/net/ethoc.h
index 2a2d6bb34eb8..bb7f467da7fc 100644
--- a/include/net/ethoc.h
+++ b/include/net/ethoc.h
@@ -17,6 +17,7 @@ struct ethoc_platform_data {
u8 hwaddr[IFHWADDRLEN];
s8 phy_id;
u32 eth_clkfreq;
+ bool big_endian;
};
#endif /* !LINUX_NET_ETHOC_H */