Cleanup of the d_mmap_t interface.

- Get rid of the useless atop() / pmap_phys_address() detour.  The
  device mmap handlers must now give back the physical address
  without atop()'ing it.
- Don't borrow the physical address of the mapping in the returned
  int.  Now we properly pass a vm_offset_t * and expect it to be
  filled by the mmap handler when the mapping was successful.  The
  mmap handler must now return 0 when successful, any other value
  is considered as an error.  Previously, returning -1 was the only
  way to fail.  This change thus accidentally fixes some devices
  which were bogusly returning errno constants which would have been
  considered as addresses by the device pager.
- Garbage collect the poorly named pmap_phys_address() now that it's
  no longer used.
- Convert all the d_mmap_t consumers to the new API.

I'm still not sure wheter we need a __FreeBSD_version bump for this,
since and we didn't guarantee API/ABI stability until 5.1-RELEASE.

Discussed with:		alc, phk, jake
Reviewed by:		peter
Compile-tested on:	LINT (i386), GENERIC (alpha and sparc64)
Runtime-tested on:	i386

3 files changed, 0 insertions, 21 deletions

diff --git a/sys/powerpc/aim/mmu_oea.c b/sys/powerpc/aim/mmu_oea.c
index 77f3451548b5..318076896792 100644
--- a/sys/powerpc/aim/mmu_oea.c
+++ b/sys/powerpc/aim/mmu_oea.c
@@ -1452,13 +1452,6 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot)
 	}
 }
 
-vm_offset_t
-pmap_phys_address(int ppn)
-{
-	TODO;
-	return (0);
-}
-
 /*
  * Map a list of wired pages into kernel virtual address space.  This is
  * intended for temporary mappings which do not need page modification or
diff --git a/sys/powerpc/powerpc/mmu_oea.c b/sys/powerpc/powerpc/mmu_oea.c
index 77f3451548b5..318076896792 100644
--- a/sys/powerpc/powerpc/mmu_oea.c
+++ b/sys/powerpc/powerpc/mmu_oea.c
@@ -1452,13 +1452,6 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot)
 	}
 }
 
-vm_offset_t
-pmap_phys_address(int ppn)
-{
-	TODO;
-	return (0);
-}
-
 /*
  * Map a list of wired pages into kernel virtual address space.  This is
  * intended for temporary mappings which do not need page modification or
diff --git a/sys/powerpc/powerpc/pmap.c b/sys/powerpc/powerpc/pmap.c
index 77f3451548b5..318076896792 100644
--- a/sys/powerpc/powerpc/pmap.c
+++ b/sys/powerpc/powerpc/pmap.c
@@ -1452,13 +1452,6 @@ pmap_protect(pmap_t pm, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot)
 	}
 }
 
-vm_offset_t
-pmap_phys_address(int ppn)
-{
-	TODO;
-	return (0);
-}
-
 /*
  * Map a list of wired pages into kernel virtual address space.  This is
  * intended for temporary mappings which do not need page modification or