From d625a29ba649a4df6027520ffc378f23c0e6883e Mon Sep 17 00:00:00 2001 From: Michael Buesch Date: Wed, 2 Apr 2008 19:46:56 +0200 Subject: ssb: Add support for block-I/O This adds support for block based I/O to SSB. This is needed in order to efficiently support PIO data transfers to the card. The block-I/O support is only compiled, if it's selected by the weird driver that needs it. So there's no overhead for sane devices. Signed-off-by: Michael Buesch Signed-off-by: John W. Linville --- include/linux/ssb/ssb.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include') diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h index a8ca396f810..9f95afd0e9e 100644 --- a/include/linux/ssb/ssb.h +++ b/include/linux/ssb/ssb.h @@ -78,6 +78,12 @@ struct ssb_bus_ops { void (*write8)(struct ssb_device *dev, u16 offset, u8 value); void (*write16)(struct ssb_device *dev, u16 offset, u16 value); void (*write32)(struct ssb_device *dev, u16 offset, u32 value); +#ifdef CONFIG_SSB_BLOCKIO + void (*block_read)(struct ssb_device *dev, void *buffer, + size_t count, u16 offset, u8 reg_width); + void (*block_write)(struct ssb_device *dev, const void *buffer, + size_t count, u16 offset, u8 reg_width); +#endif }; @@ -374,6 +380,19 @@ static inline void ssb_write32(struct ssb_device *dev, u16 offset, u32 value) { dev->ops->write32(dev, offset, value); } +#ifdef CONFIG_SSB_BLOCKIO +static inline void ssb_block_read(struct ssb_device *dev, void *buffer, + size_t count, u16 offset, u8 reg_width) +{ + dev->ops->block_read(dev, buffer, count, offset, reg_width); +} + +static inline void ssb_block_write(struct ssb_device *dev, const void *buffer, + size_t count, u16 offset, u8 reg_width) +{ + dev->ops->block_write(dev, buffer, count, offset, reg_width); +} +#endif /* CONFIG_SSB_BLOCKIO */ /* Translation (routing) bits that need to be ORed to DMA -- cgit v1.2.3