diff options
Diffstat (limited to 'kernel/arch/x86/include/asm/swiotlb.h')
-rw-r--r-- | kernel/arch/x86/include/asm/swiotlb.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/kernel/arch/x86/include/asm/swiotlb.h b/kernel/arch/x86/include/asm/swiotlb.h new file mode 100644 index 000000000..ab05d73e2 --- /dev/null +++ b/kernel/arch/x86/include/asm/swiotlb.h @@ -0,0 +1,39 @@ +#ifndef _ASM_X86_SWIOTLB_H +#define _ASM_X86_SWIOTLB_H + +#include <linux/swiotlb.h> + +#ifdef CONFIG_SWIOTLB +extern int swiotlb; +extern int __init pci_swiotlb_detect_override(void); +extern int __init pci_swiotlb_detect_4gb(void); +extern void __init pci_swiotlb_init(void); +extern void __init pci_swiotlb_late_init(void); +#else +#define swiotlb 0 +static inline int pci_swiotlb_detect_override(void) +{ + return 0; +} +static inline int pci_swiotlb_detect_4gb(void) +{ + return 0; +} +static inline void pci_swiotlb_init(void) +{ +} +static inline void pci_swiotlb_late_init(void) +{ +} +#endif + +static inline void dma_mark_clean(void *addr, size_t size) {} + +extern void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size, + dma_addr_t *dma_handle, gfp_t flags, + struct dma_attrs *attrs); +extern void x86_swiotlb_free_coherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_addr, + struct dma_attrs *attrs); + +#endif /* _ASM_X86_SWIOTLB_H */ |