#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, unsigned long attrs); extern void x86_swiotlb_free_coherent(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_addr, unsigned long attrs); #endif /* _ASM_X86_SWIOTLB_H */