When using DMA, drivers need to pass special translation info to the hardware.
Signed-off-by: Rafał Miłecki <[email protected]> --- drivers/bcma/main.c | 12 ++++++++++++ include/linux/bcma/bcma.h | 2 ++ 2 files changed, 14 insertions(+), 0 deletions(-) diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c index 873e2e4..660288c 100644 --- a/drivers/bcma/main.c +++ b/drivers/bcma/main.c @@ -164,6 +164,18 @@ int bcma_bus_register(struct bcma_bus *bus) return 0; } +u32 bcma_dma_translation(struct bcma_bus *bus) +{ + switch (bus->hosttype) { + case BCMA_HOSTTYPE_PCI: + return 0x40000000; + default: + pr_err("DMA translation unknown for host %d\n", bus->hosttype); + } + return 0; +} +EXPORT_SYMBOL(bcma_dma_translation); + void bcma_bus_unregister(struct bcma_bus *bus) { bcma_unregister_cores(bus); diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h index cc1582d..921671b 100644 --- a/include/linux/bcma/bcma.h +++ b/include/linux/bcma/bcma.h @@ -255,6 +255,8 @@ void bcma_awrite32(struct bcma_device *core, u16 offset, u32 value) #define bcma_maskset32(cc, offset, mask, set) \ bcma_write32(cc, offset, (bcma_read32(cc, offset) & (mask)) | (set)) +extern u32 bcma_dma_translation(struct bcma_bus *bus); + extern bool bcma_core_is_enabled(struct bcma_device *core); extern void bcma_core_disable(struct bcma_device *core, u32 flags); extern int bcma_core_enable(struct bcma_device *core, u32 flags); -- 1.7.3.4 _______________________________________________ b43-dev mailing list [email protected] http://lists.infradead.org/mailman/listinfo/b43-dev
