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Extract the common parts of pmap_kenter_device to a new function. This will

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be used when superpage support is added.

Obtained from:	ABT Systems Ltd
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Andrew Turner 2016-07-31 17:53:09 +00:00
parent 267c747003
commit ed24579135
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=303592
1 changed files with 15 additions and 9 deletions
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24
sys/arm64/arm64/pmap.c
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@ -1037,8 +1037,8 @@ pmap_kextract(vm_offset_t va)
* Low level mapping routines.....
***************************************************/
void
pmap_kenter_device(vm_offset_t sva, vm_size_t size, vm_paddr_t pa)
static void
pmap_kenter(vm_offset_t sva, vm_size_t size, vm_paddr_t pa, int mode)
{
pd_entry_t *pde;
pt_entry_t *pte;
@ -1046,23 +1046,22 @@ pmap_kenter_device(vm_offset_t sva, vm_size_t size, vm_paddr_t pa)
int lvl;
KASSERT((pa & L3_OFFSET) == 0,
("pmap_kenter_device: Invalid physical address"));
("pmap_kenter: Invalid physical address"));
KASSERT((sva & L3_OFFSET) == 0,
("pmap_kenter_device: Invalid virtual address"));
("pmap_kenter: Invalid virtual address"));
KASSERT((size & PAGE_MASK) == 0,
("pmap_kenter_device: Mapping is not page-sized"));
("pmap_kenter: Mapping is not page-sized"));
va = sva;
while (size != 0) {
pde = pmap_pde(kernel_pmap, va, &lvl);
KASSERT(pde != NULL,
("pmap_kenter_device: Invalid page entry, va: 0x%lx", va));
KASSERT(lvl == 2,
("pmap_kenter_device: Invalid level %d", lvl));
("pmap_kenter: Invalid page entry, va: 0x%lx", va));
KASSERT(lvl == 2, ("pmap_kenter: Invalid level %d", lvl));
pte = pmap_l2_to_l3(pde, va);
pmap_load_store(pte, (pa & ~L3_OFFSET) | ATTR_DEFAULT |
ATTR_IDX(DEVICE_MEMORY) | L3_PAGE);
ATTR_IDX(mode) | L3_PAGE);
PTE_SYNC(pte);
va += PAGE_SIZE;
@ -1072,6 +1071,13 @@ pmap_kenter_device(vm_offset_t sva, vm_size_t size, vm_paddr_t pa)
pmap_invalidate_range(kernel_pmap, sva, va);
}
void
pmap_kenter_device(vm_offset_t sva, vm_size_t size, vm_paddr_t pa)
{
pmap_kenter(sva, size, pa, DEVICE_MEMORY);
}
/*
* Remove a page from the kernel pagetables.
*/