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Add pmap_kenter_flags(), which is used by MD bus code that will be

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committed soon, add a stub form pmap_kenter_temporary(), and implement
pmap_extract() and pmap_kextract().
This commit is contained in:
Thomas Moestl 2001-10-12 15:49:51 +00:00
parent 62601deb33
commit 4bc38523ec
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=84844
2 changed files with 49 additions and 4 deletions
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3
sys/sparc64/include/pmap.h
View File

@ -66,6 +66,9 @@ struct pmap {
void pmap_bootstrap(vm_offset_t skpa, vm_offset_t ekva);
vm_offset_t pmap_kextract(vm_offset_t va);
void pmap_kenter_flags(vm_offset_t va, vm_offset_t pa, u_long flags);
#define vtophys(va) pmap_kextract(((vm_offset_t) (va)))
extern vm_offset_t avail_start;
extern vm_offset_t avail_end;

50
sys/sparc64/sparc64/pmap.c
View File

@ -412,6 +412,39 @@ pmap_kenter(vm_offset_t va, vm_offset_t pa)
stp->st_tte = tte;
}
/*
* Map a wired page into kernel virtual address space. This additionally
* takes a flag argument wich is or'ed to the TTE data. This is used by
* bus_space_map().
*/
void
pmap_kenter_flags(vm_offset_t va, vm_offset_t pa, u_long flags)
{
struct stte *stp;
struct tte tte;
tte.tte_tag = TT_CTX(TLB_CTX_KERNEL) | TT_VA(va);
if ((flags & TD_W) != 0)
flags |= TD_SW;
tte.tte_data = TD_V | TD_8K | TD_VA_LOW(va) | TD_PA(pa) |
TD_REF | TD_P | flags;
stp = tsb_kvtostte(va);
CTR4(KTR_PMAP, "pmap_kenter: va=%#lx pa=%#lx stp=%p data=%#lx",
va, pa, stp, stp->st_tte.tte_data);
stp->st_tte = tte;
}
/*
* Make a temporary mapping for a physical address. This is only intended
* to be used for panic dumps.
*/
void *
pmap_kenter_temporary(vm_offset_t pa, int i)
{
TODO;
}
/*
* Remove a wired page from kernel virtual address space.
*/
@ -970,15 +1003,24 @@ pmap_zero_page_area(vm_offset_t pa, int off, int size)
vm_offset_t
pmap_extract(pmap_t pmap, vm_offset_t va)
{
TODO;
return (0);
struct stte *stp;
stp = tsb_stte_lookup(pmap, va);
if (stp == NULL)
return (0);
else
return (TD_PA(stp->st_tte.tte_data) | (va & PAGE_MASK));
}
vm_offset_t
pmap_kextract(vm_offset_t va)
{
TODO;
return (0);
struct stte *stp;
stp = tsb_kvtostte(va);
KASSERT((stp->st_tte.tte_data & TD_V) != 0,
("pmap_kextract: invalid virtual address 0x%lx", va));
return (TD_PA(stp->st_tte.tte_data) | (va & PAGE_MASK));
}
int