diff options
Diffstat (limited to 'drivers/ssb/pcmcia.c')
| -rw-r--r-- | drivers/ssb/pcmcia.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/drivers/ssb/pcmcia.c b/drivers/ssb/pcmcia.c index dcaf2412bea7..24c2a46c1476 100644 --- a/drivers/ssb/pcmcia.c +++ b/drivers/ssb/pcmcia.c @@ -285,6 +285,64 @@ static u32 ssb_pcmcia_read32(struct ssb_device *dev, u16 offset) return (lo | (hi << 16)); } +#ifdef CONFIG_SSB_BLOCKIO +static void ssb_pcmcia_block_read(struct ssb_device *dev, void *buffer, + size_t count, u16 offset, u8 reg_width) +{ + struct ssb_bus *bus = dev->bus; + unsigned long flags; + void __iomem *addr = bus->mmio + offset; + int err; + + spin_lock_irqsave(&bus->bar_lock, flags); + err = select_core_and_segment(dev, &offset); + if (unlikely(err)) { + memset(buffer, 0xFF, count); + goto unlock; + } + 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): { + __le16 *buf = buffer; + + SSB_WARN_ON(count & 3); + while (count) { + *buf = (__force __le16)__raw_readw(addr); + buf++; + *buf = (__force __le16)__raw_readw(addr + 2); + buf++; + count -= 4; + } + break; + } + default: + SSB_WARN_ON(1); + } +unlock: + spin_unlock_irqrestore(&bus->bar_lock, flags); +} +#endif /* CONFIG_SSB_BLOCKIO */ + static void ssb_pcmcia_write8(struct ssb_device *dev, u16 offset, u8 value) { struct ssb_bus *bus = dev->bus; @@ -329,6 +387,63 @@ static void ssb_pcmcia_write32(struct ssb_device *dev, u16 offset, u32 value) spin_unlock_irqrestore(&bus->bar_lock, flags); } +#ifdef CONFIG_SSB_BLOCKIO +static void ssb_pcmcia_block_write(struct ssb_device *dev, const void *buffer, + size_t count, u16 offset, u8 reg_width) +{ + struct ssb_bus *bus = dev->bus; + unsigned long flags; + void __iomem *addr = bus->mmio + offset; + int err; + + spin_lock_irqsave(&bus->bar_lock, flags); + err = select_core_and_segment(dev, &offset); + if (unlikely(err)) + goto unlock; + 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 __le16 *buf = buffer; + + SSB_WARN_ON(count & 3); + while (count) { + __raw_writew((__force u16)(*buf), addr); + buf++; + __raw_writew((__force u16)(*buf), addr + 2); + buf++; + count -= 4; + } + break; + } + default: + SSB_WARN_ON(1); + } +unlock: + mmiowb(); + spin_unlock_irqrestore(&bus->bar_lock, flags); +} +#endif /* CONFIG_SSB_BLOCKIO */ + /* Not "static", as it's used in main.c */ const struct ssb_bus_ops ssb_pcmcia_ops = { .read8 = ssb_pcmcia_read8, @@ -337,6 +452,10 @@ const struct ssb_bus_ops ssb_pcmcia_ops = { .write8 = ssb_pcmcia_write8, .write16 = ssb_pcmcia_write16, .write32 = ssb_pcmcia_write32, +#ifdef CONFIG_SSB_BLOCKIO + .block_read = ssb_pcmcia_block_read, + .block_write = ssb_pcmcia_block_write, +#endif }; static int ssb_pcmcia_sprom_command(struct ssb_bus *bus, u8 command) |