[src/trunk]: src/sys/arch/i386 Implement bus_space_mmap().

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6d68075047d5
branches:  trunk
changeset: 514488:6d68075047d5
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Tue Sep 04 02:37:08 2001 +0000

description:
Implement bus_space_mmap().

diffstat:

 sys/arch/i386/i386/bus_machdep.c |  25 ++++++++++++++++++++++++-
 sys/arch/i386/include/bus.h      |  15 ++++++++++++++-
 2 files changed, 38 insertions(+), 2 deletions(-)

diffs (68 lines):

diff -r 7617b15b3f3e -r 6d68075047d5 sys/arch/i386/i386/bus_machdep.c
--- a/sys/arch/i386/i386/bus_machdep.c  Tue Sep 04 02:10:52 2001 +0000
+++ b/sys/arch/i386/i386/bus_machdep.c  Tue Sep 04 02:37:08 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bus_machdep.c,v 1.9 2001/05/26 21:27:07 chs Exp $      */
+/*     $NetBSD: bus_machdep.c,v 1.10 2001/09/04 02:37:08 thorpej Exp $ */
 
 /*-
  * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
@@ -457,6 +457,29 @@
        return (0);
 }
 
+paddr_t
+i386_memio_mmap(t, addr, off, prot, flags)
+       bus_space_tag_t t;
+       bus_addr_t addr;
+       off_t off;
+       int prot;
+       int flags;
+{
+
+       /* Can't mmap I/O space. */
+       if (t == I386_BUS_SPACE_IO)
+               return (EOPNOTSUPP);
+
+       /*
+        * "addr" is the base address of the device we're mapping.
+        * "off" is the offset into that device.
+        *
+        * Note we are called for each "page" in the device that
+        * the upper layers want to map.
+        */
+       return (i386_btop(addr + off));
+}
+
 /*
  * Common function for DMA map creation.  May be called by bus-specific
  * DMA map creation functions.
diff -r 7617b15b3f3e -r 6d68075047d5 sys/arch/i386/include/bus.h
--- a/sys/arch/i386/include/bus.h       Tue Sep 04 02:10:52 2001 +0000
+++ b/sys/arch/i386/include/bus.h       Tue Sep 04 02:37:08 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bus.h,v 1.35 2001/07/19 15:32:14 thorpej Exp $ */
+/*     $NetBSD: bus.h,v 1.36 2001/09/04 02:37:09 thorpej Exp $ */
 
 /*-
  * Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc.
@@ -209,6 +209,19 @@
        ((t) == I386_BUS_SPACE_MEM ? (void *)(h) : (void *)0)
 
 /*
+ *     paddr_t bus_space_mmap __P((bus_space_tag_t t, bus_addr_t base,
+ *         off_t offset, int prot, int flags));
+ *
+ * Mmap an area of bus space.
+ */
+
+paddr_t        i386_memio_mmap __P((bus_space_tag_t, bus_addr_t, off_t,
+           int, int));
+
+#define        bus_space_mmap(t, b, o, p, f)                                   \
+       i386_memio_mmap((t), (b), (o), (p), (f))
+
+/*
  *     u_intN_t bus_space_read_N __P((bus_space_tag_t tag,
  *         bus_space_handle_t bsh, bus_size_t offset));
  *