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Introduction of write-combined memory type mappings.

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Introduction of VR_WRITE_COMBINED, PTATTR_WRITE_COMBINED and modification
to the memobj's get_page() interface so that Linux communicates back mapping
flags (such as write-combined).
This commit is contained in:
Balazs Gerofi
2015-03-05 15:43:43 +09:00
parent ea5681232e
commit bf12a5c45e
10 changed files with 46 additions and 12 deletions
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6
kernel/include/memobj.h
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@ -34,7 +34,7 @@ struct memobj {
typedef void memobj_release_func_t(struct memobj *obj);
typedef void memobj_ref_func_t(struct memobj *obj);
typedef int memobj_get_page_func_t(struct memobj *obj, off_t off, int p2align, uintptr_t *physp);
typedef int memobj_get_page_func_t(struct memobj *obj, off_t off, int p2align, uintptr_t *physp, unsigned long *flag);
typedef uintptr_t memobj_copy_page_func_t(struct memobj *obj, uintptr_t orgphys, int p2align);
typedef int memobj_flush_page_func_t(struct memobj *obj, uintptr_t phys, size_t pgsize);
typedef int memobj_invalidate_page_func_t(struct memobj *obj, uintptr_t phys, size_t pgsize);
@ -63,10 +63,10 @@ static inline void memobj_ref(struct memobj *obj)
}
static inline int memobj_get_page(struct memobj *obj, off_t off,
int p2align, uintptr_t *physp)
int p2align, uintptr_t *physp, unsigned long *pflag)
{
if (obj->ops->get_page) {
return (*obj->ops->get_page)(obj, off, p2align, physp);
return (*obj->ops->get_page)(obj, off, p2align, physp, pflag);
}
return -ENXIO;
}