From c854de7273991a8ebafd7fd9971e0012013035c6 Mon Sep 17 00:00:00 2001 From: marcel Date: Sat, 25 Oct 2008 03:36:21 +0000 Subject: 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. --- sys/powerpc/booke/pmap.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) (limited to 'sys/powerpc') diff --git a/sys/powerpc/booke/pmap.c b/sys/powerpc/booke/pmap.c index 9a4de40..ce09a83 100644 --- a/sys/powerpc/booke/pmap.c +++ b/sys/powerpc/booke/pmap.c @@ -2296,14 +2296,25 @@ mmu_booke_dev_direct_mapped(mmu_t mmu, vm_offset_t pa, vm_size_t size) 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); } /* -- cgit v1.1