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48483760 AK |
1 | #include <linux/mm.h> |
2 | #include <linux/hugetlb.h> | |
3 | #include <asm/pgtable.h> | |
4 | #include <asm/pgalloc.h> | |
5 | #include <asm/cacheflush.h> | |
6 | #include <asm/machdep.h> | |
7 | #include <asm/mman.h> | |
fbfa26d8 | 8 | #include <asm/tlb.h> |
48483760 AK |
9 | |
10 | void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr) | |
11 | { | |
fbfa26d8 | 12 | int psize; |
48483760 AK |
13 | struct hstate *hstate = hstate_file(vma->vm_file); |
14 | ||
fbfa26d8 AK |
15 | psize = hstate_get_psize(hstate); |
16 | radix__flush_tlb_page_psize(vma->vm_mm, vmaddr, psize); | |
48483760 AK |
17 | } |
18 | ||
19 | void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr) | |
20 | { | |
fbfa26d8 | 21 | int psize; |
48483760 AK |
22 | struct hstate *hstate = hstate_file(vma->vm_file); |
23 | ||
fbfa26d8 AK |
24 | psize = hstate_get_psize(hstate); |
25 | radix__local_flush_tlb_page_psize(vma->vm_mm, vmaddr, psize); | |
48483760 AK |
26 | } |
27 | ||
5491ae7b AK |
28 | void radix__flush_hugetlb_tlb_range(struct vm_area_struct *vma, unsigned long start, |
29 | unsigned long end) | |
30 | { | |
31 | int psize; | |
32 | struct hstate *hstate = hstate_file(vma->vm_file); | |
33 | ||
34 | psize = hstate_get_psize(hstate); | |
35 | radix__flush_tlb_range_psize(vma->vm_mm, start, end, psize); | |
36 | } | |
37 | ||
48483760 AK |
38 | /* |
39 | * A vairant of hugetlb_get_unmapped_area doing topdown search | |
40 | * FIXME!! should we do as x86 does or non hugetlb area does ? | |
41 | * ie, use topdown or not based on mmap_is_legacy check ? | |
42 | */ | |
43 | unsigned long | |
44 | radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr, | |
45 | unsigned long len, unsigned long pgoff, | |
46 | unsigned long flags) | |
47 | { | |
48 | struct mm_struct *mm = current->mm; | |
49 | struct vm_area_struct *vma; | |
50 | struct hstate *h = hstate_file(file); | |
51 | struct vm_unmapped_area_info info; | |
52 | ||
f4ea6dcb AK |
53 | if (unlikely(addr > mm->context.addr_limit && addr < TASK_SIZE)) |
54 | mm->context.addr_limit = TASK_SIZE; | |
55 | ||
48483760 AK |
56 | if (len & ~huge_page_mask(h)) |
57 | return -EINVAL; | |
be77e999 | 58 | if (len > mm->task_size) |
48483760 AK |
59 | return -ENOMEM; |
60 | ||
61 | if (flags & MAP_FIXED) { | |
62 | if (prepare_hugepage_range(file, addr, len)) | |
63 | return -EINVAL; | |
64 | return addr; | |
65 | } | |
66 | ||
67 | if (addr) { | |
68 | addr = ALIGN(addr, huge_page_size(h)); | |
69 | vma = find_vma(mm, addr); | |
be77e999 | 70 | if (mm->task_size - len >= addr && |
48483760 AK |
71 | (!vma || addr + len <= vma->vm_start)) |
72 | return addr; | |
73 | } | |
74 | /* | |
75 | * We are always doing an topdown search here. Slice code | |
76 | * does that too. | |
77 | */ | |
78 | info.flags = VM_UNMAPPED_AREA_TOPDOWN; | |
79 | info.length = len; | |
80 | info.low_limit = PAGE_SIZE; | |
81 | info.high_limit = current->mm->mmap_base; | |
82 | info.align_mask = PAGE_MASK & ~huge_page_mask(h); | |
83 | info.align_offset = 0; | |
f4ea6dcb AK |
84 | |
85 | if (addr > DEFAULT_MAP_WINDOW) | |
86 | info.high_limit += mm->context.addr_limit - DEFAULT_MAP_WINDOW; | |
87 | ||
48483760 AK |
88 | return vm_unmapped_area(&info); |
89 | } |