diff options
Diffstat (limited to 'sys/ia64')
-rw-r--r-- | sys/ia64/ia64/pmap.c | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/sys/ia64/ia64/pmap.c b/sys/ia64/ia64/pmap.c index f8f86b6..0e34f36 100644 --- a/sys/ia64/ia64/pmap.c +++ b/sys/ia64/ia64/pmap.c @@ -66,6 +66,7 @@ __FBSDID("$FreeBSD$"); #include <vm/uma.h> #include <machine/bootinfo.h> +#include <machine/efi.h> #include <machine/md_var.h> #include <machine/pal.h> @@ -2235,12 +2236,37 @@ pmap_remove_write(vm_page_t m) * NOT real memory. */ void * -pmap_mapdev(vm_paddr_t pa, vm_size_t size) +pmap_mapdev(vm_paddr_t pa, vm_size_t sz) { + static void *last_va = NULL; + static vm_paddr_t last_pa = 0; + static vm_size_t last_sz = 0; + struct efi_md *md; vm_offset_t va; - va = pa | IA64_RR_BASE(6); - return ((void *)va); + if (pa == last_pa && sz == last_sz) + return (last_va); + + md = efi_md_find(pa); + if (md == NULL) { + printf("%s: [%#lx..%#lx] not covered by memory descriptor\n", + __func__, pa, pa + sz - 1); + return (NULL); + } + + if (md->md_type == EFI_MD_TYPE_FREE) { + printf("%s: [%#lx..%#lx] is in DRAM\n", __func__, pa, + pa + sz - 1); + return (NULL); + } + + va = (md->md_attr & EFI_MD_ATTR_WB) ? IA64_PHYS_TO_RR7(pa) : + IA64_PHYS_TO_RR6(pa); + + last_va = (void *)va; + last_pa = pa; + last_sz = sz; + return (last_va); } /* |