Author: marcel
Date: Sat Oct 25 03:36:21 2008
New Revision: 184244
URL: http://svn.freebsd.org/changeset/base/184244
Log:
In mmu_booke_mapdev(), handle mappings that cannot be represented
by a single TLB entry. The boot ROM on the MPC85555CDS is 8MB, for
example, and in order to map that we need 2 4MB TLB entries.
Modified:
head/sys/powerpc/booke/pmap.c
Modified: head/sys/powerpc/booke/pmap.c
==============================================================================
--- head/sys/powerpc/booke/pmap.c Sat Oct 25 03:06:47 2008
(r184243)
+++ head/sys/powerpc/booke/pmap.c Sat Oct 25 03:36:21 2008
(r184244)
@@ -2296,14 +2296,25 @@ mmu_booke_dev_direct_mapped(mmu_t mmu, v
static void *
mmu_booke_mapdev(mmu_t mmu, vm_offset_t pa, vm_size_t size)
{
+ void *res;
uintptr_t va;
+ vm_size_t sz;
va = (pa >= 0x80000000) ? pa : (0xe2000000 + pa);
- if (bootverbose)
- printf("Wiring VA=%x to PA=%x (size=%x), using TLB1[%d]\n",
- va, pa, size, tlb1_idx);
- tlb1_set_entry(va, pa, size, _TLB_ENTRY_IO);
- return ((void *)va);
+ res = (void *)va;
+
+ do {
+ sz = 1 << (ilog2(size) & ~1);
+ if (bootverbose)
+ printf("Wiring VA=%x to PA=%x (size=%x), "
+ "using TLB1[%d]\n", va, pa, sz, tlb1_idx);
+ tlb1_set_entry(va, pa, sz, _TLB_ENTRY_IO);
+ size -= sz;
+ pa += sz;
+ va += sz;
+ } while (size > 0);
+
+ return (res);
}
/*
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
