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bcma: host pci: implement block R/W operations

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Signed-off-by: Rafał Miłecki <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
This commit is contained in:
Rafał Miłecki 2011-05-20 03:27:06 +02:00 • committed by John W. Linville
commit 9d75ef0f8f
3 changed files with 75 additions and 0 deletions
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5
drivers/bcma/Kconfig
View file

@ -13,6 +13,11 @@ config BCMA
Bus driver for Broadcom specific Advanced Microcontroller Bus
Architecture.
# Support for Block-I/O. SELECT this from the driver that needs it.
config BCMA_BLOCKIO
bool
depends on BCMA
config BCMA_HOST_PCI_POSSIBLE
bool
depends on BCMA && PCI = y

52
drivers/bcma/host_pci.c
View file

@ -64,6 +64,54 @@ static void bcma_host_pci_write32(struct bcma_device *core, u16 offset,
iowrite32(value, core->bus->mmio + offset);
}
#ifdef CONFIG_BCMA_BLOCKIO
void bcma_host_pci_block_read(struct bcma_device *core, void *buffer,
size_t count, u16 offset, u8 reg_width)
{
void __iomem *addr = core->bus->mmio + offset;
if (core->bus->mapped_core != core)
bcma_host_pci_switch_core(core);
switch (reg_width) {
case sizeof(u8):
ioread8_rep(addr, buffer, count);
break;
case sizeof(u16):
WARN_ON(count & 1);
ioread16_rep(addr, buffer, count >> 1);
break;
case sizeof(u32):
WARN_ON(count & 3);
ioread32_rep(addr, buffer, count >> 2);
break;
default:
WARN_ON(1);
}
}
void bcma_host_pci_block_write(struct bcma_device *core, const void *buffer,
size_t count, u16 offset, u8 reg_width)
{
void __iomem *addr = core->bus->mmio + offset;
if (core->bus->mapped_core != core)
bcma_host_pci_switch_core(core);
switch (reg_width) {
case sizeof(u8):
iowrite8_rep(addr, buffer, count);
break;
case sizeof(u16):
WARN_ON(count & 1);
iowrite16_rep(addr, buffer, count >> 1);
break;
case sizeof(u32):
WARN_ON(count & 3);
iowrite32_rep(addr, buffer, count >> 2);
break;
default:
WARN_ON(1);
}
}
#endif
static u32 bcma_host_pci_aread32(struct bcma_device *core, u16 offset)
{
if (core->bus->mapped_core != core)
@ -86,6 +134,10 @@ const struct bcma_host_ops bcma_host_pci_ops = {
.write8 = bcma_host_pci_write8,
.write16 = bcma_host_pci_write16,
.write32 = bcma_host_pci_write32,
#ifdef CONFIG_BCMA_BLOCKIO
.block_read = bcma_host_pci_block_read,
.block_write = bcma_host_pci_block_write,
#endif
.aread32 = bcma_host_pci_aread32,
.awrite32 = bcma_host_pci_awrite32,
};