forked from luck/tmp_suning_uos_patched
1b65c4e5a9
Use xen_alloc_coherent_pages and xen_free_coherent_pages to allocate or free coherent pages. We need to be careful handling the pointer returned by xen_alloc_coherent_pages, because on ARM the pointer is not equal to phys_to_virt(*dma_handle). In fact virt_to_phys only works for kernel direct mapped RAM memory. In ARM case the pointer could be an ioremap address, therefore passing it to virt_to_phys would give you another physical address that doesn't correspond to it. Make xen_create_contiguous_region take a phys_addr_t as start parameter to avoid the virt_to_phys calls which would be incorrect. Changes in v6: - remove extra spaces. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
#ifndef INCLUDE_XEN_OPS_H
|
|
#define INCLUDE_XEN_OPS_H
|
|
|
|
#include <linux/percpu.h>
|
|
#include <asm/xen/interface.h>
|
|
|
|
DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
|
|
|
|
void xen_arch_pre_suspend(void);
|
|
void xen_arch_post_suspend(int suspend_cancelled);
|
|
void xen_arch_hvm_post_suspend(int suspend_cancelled);
|
|
|
|
void xen_mm_pin_all(void);
|
|
void xen_mm_unpin_all(void);
|
|
|
|
void xen_timer_resume(void);
|
|
void xen_arch_resume(void);
|
|
|
|
int xen_setup_shutdown_event(void);
|
|
|
|
extern unsigned long *xen_contiguous_bitmap;
|
|
int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,
|
|
unsigned int address_bits,
|
|
dma_addr_t *dma_handle);
|
|
|
|
void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order);
|
|
|
|
struct vm_area_struct;
|
|
int xen_remap_domain_mfn_range(struct vm_area_struct *vma,
|
|
unsigned long addr,
|
|
xen_pfn_t mfn, int nr,
|
|
pgprot_t prot, unsigned domid,
|
|
struct page **pages);
|
|
int xen_unmap_domain_mfn_range(struct vm_area_struct *vma,
|
|
int numpgs, struct page **pages);
|
|
|
|
bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
|
|
#endif /* INCLUDE_XEN_OPS_H */
|