diff options
author | Glauber Costa <gcosta@redhat.com> | 2008-03-25 18:36:21 -0300 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-04-19 19:19:56 +0200 |
commit | 22456b97148be300e25e9cb97244656775972475 (patch) | |
tree | d85225c64c776f61c9485a5ca1b06f32c53cc5fe /arch | |
parent | 6f5366354bf86f8d2c1cf241c9bbf44b2d350e30 (diff) |
x86: implement dma_map_single through dma_ops
That's already the name of the game for x86_64. For i386,
we add a pci-base_32.c, that will hold the default operations.
The function call itself goes through dma-mapping.h , the common
header
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/kernel/Makefile | 1 | ||||
-rw-r--r-- | arch/x86/kernel/pci-base_32.c | 20 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 7a2a2e93e84..edd5c54ffde 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -26,6 +26,7 @@ obj-y += pci-dma_$(BITS).o bootflag.o e820_$(BITS).o obj-y += quirks.o i8237.o topology.o kdebugfs.o obj-y += alternative.o i8253.o obj-$(CONFIG_X86_64) += pci-nommu_64.o bugs_64.o +obj-$(CONFIG_X86_32) += pci-base_32.o obj-y += tsc_$(BITS).o io_delay.o rtc.o obj-$(CONFIG_X86_TRAMPOLINE) += trampoline.o diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c new file mode 100644 index 00000000000..b613d735f76 --- /dev/null +++ b/arch/x86/kernel/pci-base_32.c @@ -0,0 +1,20 @@ +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/dma-mapping.h> +#include <asm/dma-mapping.h> + +static dma_addr_t pci32_map_single(struct device *dev, void *ptr, + size_t size, int direction) +{ + WARN_ON(size == 0); + flush_write_buffers(); + return virt_to_phys(ptr); +} + +static const struct dma_mapping_ops pci32_dma_ops = { + .map_single = pci32_map_single, +}; + +const struct dma_mapping_ops *dma_ops = &pci32_dma_ops; +EXPORT_SYMBOL(dma_ops); |