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net/ethoc: support big-endian register layout 

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Max Filippov 2015-09-22 14:27:16 +03:00 committed by David S. Miller
parent 1bb6aa56bb
commit 06e60e5912
2 changed files with 13 additions and 2 deletions
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14
drivers/net/ethernet/ethoc.c
View File

@ -201,6 +201,7 @@ struct ethoc {
void __iomem *membase; void __iomem *membase;
int dma_alloc; int dma_alloc;
resource_size_t io_region_size; resource_size_t io_region_size;
bool big_endian;
unsigned int num_bd; unsigned int num_bd;
unsigned int num_tx; unsigned int num_tx;
@ -236,12 +237,18 @@ struct ethoc_bd {
static inline u32 ethoc_read(struct ethoc *dev, loff_t offset) 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) 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, 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->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 */ /* calculate the number of TX/RX buffers, maximum 128 supported */
num_bd = min_t(unsigned int, num_bd = min_t(unsigned int,
128, (netdev->mem_end - netdev->mem_start + 1) / ETHOC_BUFSIZ); 128, (netdev->mem_end - netdev->mem_start + 1) / ETHOC_BUFSIZ);

1
include/net/ethoc.h
View File

@ -17,6 +17,7 @@ struct ethoc_platform_data {
u8 hwaddr[IFHWADDRLEN]; u8 hwaddr[IFHWADDRLEN];
s8 phy_id; s8 phy_id;
u32 eth_clkfreq; u32 eth_clkfreq;
bool big_endian;
}; };
#endif /* !LINUX_NET_ETHOC_H */ #endif /* !LINUX_NET_ETHOC_H */