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Commit 3bc0f40c authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Paul Mackerras
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[POWERPC] Spider uses low level BE MMIO accessors 



We use the powerpc specific low level MMIO accessor variants instead
of readl() or readl_be() because we know spidernet is not a real PCI
device and we can thus avoid the performance hit caused by the PCI
workarounds.

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 014da7ff

drivers/net/spider_net.c

+10 −8
Original line number Diff line number Diff line
@@ -88,12 +88,11 @@ MODULE_DEVICE_TABLE(pci, spider_net_pci_tbl); 
static inline u32

spider_net_read_reg(struct spider_net_card *card, u32 reg)

{

	u32 value;



	value = readl(card->regs + reg);

	value = le32_to_cpu(value);



	return value;

	/* We use the powerpc specific variants instead of readl_be() because

	 * we know spidernet is not a real PCI device and we can thus avoid the

	 * performance hit caused by the PCI workarounds.

	 */

	return in_be32(card->regs + reg);

}



/**
@@ -105,8 +104,11 @@ spider_net_read_reg(struct spider_net_card *card, u32 reg) 
static inline void

spider_net_write_reg(struct spider_net_card *card, u32 reg, u32 value)

{

	value = cpu_to_le32(value);

	writel(value, card->regs + reg);

	/* We use the powerpc specific variants instead of writel_be() because

	 * we know spidernet is not a real PCI device and we can thus avoid the

	 * performance hit caused by the PCI workarounds.

	 */

	out_be32(card->regs + reg, value);

}



/** spider_net_write_phy - write to phy register