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Handle managed and unmanaged mapping better. Allocate an vm object for

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the tsb pages.
This commit is contained in:
Jake Burkholder 2001-08-06 02:27:34 +00:00
parent 2a9921d8bd
commit 9592342320
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=81181
1 changed files with 32 additions and 17 deletions
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49
sys/sparc64/sparc64/pmap.c
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@ -345,12 +345,14 @@ pmap_map(vm_offset_t *virt, vm_offset_t pa_start, vm_offset_t pa_end, int prot)
void
pmap_kenter(vm_offset_t va, vm_offset_t pa)
{
struct stte *stp;
struct tte tte;
tte.tte_tag = TT_CTX(TLB_CTX_KERNEL) | TT_VA(va);
tte.tte_data = TD_V | TD_8K | TD_VA_LOW(va) | TD_PA(pa) |
TD_MOD | TD_REF | TD_CP | TD_P | TD_W;
tsb_tte_enter_kernel(va, tte);
stp = tsb_kvtostte(va);
stp->st_tte = tte;
}
/*
@ -359,7 +361,10 @@ pmap_kenter(vm_offset_t va, vm_offset_t pa)
void
pmap_kremove(vm_offset_t va)
{
tsb_remove_kernel(va);
struct stte *stp;
stp = tsb_kvtostte(va);
tte_invalidate(&stp->st_tte);
}
/*
@ -417,19 +422,18 @@ pmap_enter(pmap_t pm, vm_offset_t va, vm_page_t m, vm_prot_t prot,
tte.tte_data |= TD_W;
if (prot & VM_PROT_EXECUTE) {
tte.tte_data |= TD_EXEC;
icache_global_flush(&pa);
}
if (pm == kernel_pmap) {
tsb_tte_enter_kernel(va, tte);
return;
icache_global_flush(pa);
}
if ((m->flags & (PG_FICTITIOUS | PG_UNMANAGED)) == 0)
tte.tte_data |= TD_MNG;
PMAP_LOCK(pm);
if ((stp = tsb_stte_lookup(pm, va)) != NULL) {
pv_remove_virt(stp);
if (stp->st_tte.tte_data & TD_MNG)
pv_remove_virt(stp);
tsb_stte_remove(stp);
pv_insert(pm, pa, va, stp);
if (tte.tte_data & TD_MNG)
pv_insert(pm, pa, va, stp);
stp->st_tte = tte;
} else {
tsb_tte_enter(pm, va, tte);
@ -437,6 +441,22 @@ pmap_enter(pmap_t pm, vm_offset_t va, vm_page_t m, vm_prot_t prot,
PMAP_UNLOCK(pm);
}
void
pmap_remove(pmap_t pm, vm_offset_t start, vm_offset_t end)
{
struct stte *stp;
PMAP_LOCK(pm);
for (; start < end; start += PAGE_SIZE) {
if ((stp = tsb_stte_lookup(pm, start)) == NULL)
continue;
if (stp->st_tte.tte_data & TD_MNG)
pv_remove_virt(stp);
tsb_stte_remove(stp);
}
PMAP_UNLOCK(pm);
}
/*
* Initialize the pmap module.
*/
@ -472,6 +492,7 @@ pmap_pinit(pmap_t pm)
{
struct stte *stp;
pm->pm_object = vm_object_allocate(OBJT_DEFAULT, 16);
pm->pm_context = pmap_context_alloc();
pm->pm_active = 0;
pm->pm_count = 1;
@ -679,7 +700,7 @@ pmap_page_exists(pmap_t pmap, vm_page_t m)
void
pmap_prefault(pmap_t pmap, vm_offset_t va, vm_map_entry_t entry)
{
TODO;
/* XXX */
}
void
@ -708,12 +729,6 @@ pmap_release(pmap_t pmap)
TODO;
}
void
pmap_remove(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
{
TODO;
}
void
pmap_remove_pages(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
{