diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2018-10-31 08:50:26 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2018-10-31 08:50:26 +0000 |
| commit | 11cd045a6b01fc57b8f558340ee12a6b0d9277a4 (patch) | |
| tree | beb321a7a892ba850aff8e24a218d810317ac868 /sys/uvm/uvm.h | |
| parent | 54d5cb46157164d31a59414e58eab9a960756897 (diff) | |
Add support to uvm to establish write-combining mappings. Use this in the
inteldrm driver to add support for the I915_MMAP_WC flag.
ok deraadt@, jsg@
Diffstat (limited to 'sys/uvm/uvm.h')
| -rw-r--r-- | sys/uvm/uvm.h | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/sys/uvm/uvm.h b/sys/uvm/uvm.h index 3e765a66226..7a93862dd97 100644 --- a/sys/uvm/uvm.h +++ b/sys/uvm/uvm.h @@ -1,4 +1,4 @@ -/* $OpenBSD: uvm.h,v 1.62 2018/04/12 17:13:44 deraadt Exp $ */ +/* $OpenBSD: uvm.h,v 1.63 2018/10/31 08:50:25 kettenis Exp $ */ /* $NetBSD: uvm.h,v 1.24 2000/11/27 08:40:02 chs Exp $ */ /* @@ -82,14 +82,15 @@ struct uvm { * vm_map_entry etype bits: */ -#define UVM_ET_OBJ 0x01 /* it is a uvm_object */ -#define UVM_ET_SUBMAP 0x02 /* it is a vm_map submap */ -#define UVM_ET_COPYONWRITE 0x04 /* copy_on_write */ -#define UVM_ET_NEEDSCOPY 0x08 /* needs_copy */ -#define UVM_ET_HOLE 0x10 /* no backend */ -#define UVM_ET_NOFAULT 0x20 /* don't fault */ -#define UVM_ET_STACK 0x40 /* this is a stack */ -#define UVM_ET_FREEMAPPED 0x80 /* map entry is on free list (DEBUG) */ +#define UVM_ET_OBJ 0x0001 /* it is a uvm_object */ +#define UVM_ET_SUBMAP 0x0002 /* it is a vm_map submap */ +#define UVM_ET_COPYONWRITE 0x0004 /* copy_on_write */ +#define UVM_ET_NEEDSCOPY 0x0008 /* needs_copy */ +#define UVM_ET_HOLE 0x0010 /* no backend */ +#define UVM_ET_NOFAULT 0x0020 /* don't fault */ +#define UVM_ET_STACK 0x0040 /* this is a stack */ +#define UVM_ET_WC 0x0080 /* write combining */ +#define UVM_ET_FREEMAPPED 0x8000 /* map entry is on free list (DEBUG) */ #define UVM_ET_ISOBJ(E) (((E)->etype & UVM_ET_OBJ) != 0) #define UVM_ET_ISSUBMAP(E) (((E)->etype & UVM_ET_SUBMAP) != 0) @@ -98,6 +99,7 @@ struct uvm { #define UVM_ET_ISHOLE(E) (((E)->etype & UVM_ET_HOLE) != 0) #define UVM_ET_ISNOFAULT(E) (((E)->etype & UVM_ET_NOFAULT) != 0) #define UVM_ET_ISSTACK(E) (((E)->etype & UVM_ET_STACK) != 0) +#define UVM_ET_ISWC(E) (((E)->etype & UVM_ET_WC) != 0) #ifdef _KERNEL |