diff options
Diffstat (limited to 'drivers/ssb/main.c')
| -rw-r--r-- | drivers/ssb/main.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c index 3e58db7ef60..19ddd2bd105 100644 --- a/drivers/ssb/main.c +++ b/drivers/ssb/main.c @@ -555,6 +555,55 @@ static u32 ssb_ssb_read32(struct ssb_device *dev, u16 offset) return readl(bus->mmio + offset); } +#ifdef CONFIG_SSB_BLOCKIO +static void ssb_ssb_block_read(struct ssb_device *dev, void *buffer, + size_t count, u16 offset, u8 reg_width) +{ + struct ssb_bus *bus = dev->bus; + void __iomem *addr; + + offset += dev->core_index * SSB_CORE_SIZE; + addr = bus->mmio + offset; + + switch (reg_width) { + case sizeof(u8): { + u8 *buf = buffer; + + while (count) { + *buf = __raw_readb(addr); + buf++; + count--; + } + break; + } + case sizeof(u16): { + __le16 *buf = buffer; + + SSB_WARN_ON(count & 1); + while (count) { + *buf = (__force __le16)__raw_readw(addr); + buf++; + count -= 2; + } + break; + } + case sizeof(u32): { + __le32 *buf = buffer; + + SSB_WARN_ON(count & 3); + while (count) { + *buf = (__force __le32)__raw_readl(addr); + buf++; + count -= 4; + } + break; + } + default: + SSB_WARN_ON(1); + } +} +#endif /* CONFIG_SSB_BLOCKIO */ + static void ssb_ssb_write8(struct ssb_device *dev, u16 offset, u8 value) { struct ssb_bus *bus = dev->bus; @@ -579,6 +628,55 @@ static void ssb_ssb_write32(struct ssb_device *dev, u16 offset, u32 value) writel(value, bus->mmio + offset); } +#ifdef CONFIG_SSB_BLOCKIO +static void ssb_ssb_block_write(struct ssb_device *dev, const void *buffer, + size_t count, u16 offset, u8 reg_width) +{ + struct ssb_bus *bus = dev->bus; + void __iomem *addr; + + offset += dev->core_index * SSB_CORE_SIZE; + addr = bus->mmio + offset; + + switch (reg_width) { + case sizeof(u8): { + const u8 *buf = buffer; + + while (count) { + __raw_writeb(*buf, addr); + buf++; + count--; + } + break; + } + case sizeof(u16): { + const __le16 *buf = buffer; + + SSB_WARN_ON(count & 1); + while (count) { + __raw_writew((__force u16)(*buf), addr); + buf++; + count -= 2; + } + break; + } + case sizeof(u32): { + const __le32 *buf = buffer; + + SSB_WARN_ON(count & 3); + while (count) { + __raw_writel((__force u32)(*buf), addr); + buf++; + count -= 4; + } + break; + } + default: + SSB_WARN_ON(1); + } +} +#endif /* CONFIG_SSB_BLOCKIO */ + /* Ops for the plain SSB bus without a host-device (no PCI or PCMCIA). */ static const struct ssb_bus_ops ssb_ssb_ops = { .read8 = ssb_ssb_read8, @@ -587,6 +685,10 @@ static const struct ssb_bus_ops ssb_ssb_ops = { .write8 = ssb_ssb_write8, .write16 = ssb_ssb_write16, .write32 = ssb_ssb_write32, +#ifdef CONFIG_SSB_BLOCKIO + .block_read = ssb_ssb_block_read, + .block_write = ssb_ssb_block_write, +#endif }; static int ssb_fetch_invariants(struct ssb_bus *bus, |