diff options
| author | Dale S. Rahn <rahnds@cvs.openbsd.org> | 2000-09-19 05:26:35 +0000 |
|---|---|---|
| committer | Dale S. Rahn <rahnds@cvs.openbsd.org> | 2000-09-19 05:26:35 +0000 |
| commit | 6b4c45e9c091a4323972887c847d632db49d5d24 (patch) | |
| tree | 6b896e6ba383110c4f9c0fb1381fcbee950b04fc /sys/arch | |
| parent | 00b17a6f5dcfde0d22a01005fc9ac67939e8fe6a (diff) | |
Use the BATs to map devices. This is partially so that larger
displays can be mapped so that the pmap module does not need to
allocate potables before vm is inited (vga console).
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/powerpc/powerpc/machdep.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/sys/arch/powerpc/powerpc/machdep.c b/sys/arch/powerpc/powerpc/machdep.c index 36667a1cf03..c1e9cf1ac0b 100644 --- a/sys/arch/powerpc/powerpc/machdep.c +++ b/sys/arch/powerpc/powerpc/machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: machdep.c,v 1.47 2000/09/15 03:52:37 rahnds Exp $ */ +/* $OpenBSD: machdep.c,v 1.48 2000/09/19 05:26:34 rahnds Exp $ */ /* $NetBSD: machdep.c,v 1.4 1996/10/16 19:33:11 ws Exp $ */ /* @@ -139,7 +139,7 @@ struct extent *devio_ex; static int devio_malloc_safe = 0; /* HACK - XXX */ -int segment8_mapped = 0; +int segment8_a_mapped = 0; extern int OF_stdout; extern int where; @@ -199,9 +199,13 @@ where = 3; battable[0].batu = BATU(0x00000000); #if 1 - battable[1].batl = BATL(0x80000000, BAT_I); - battable[1].batu = BATU(0x80000000); - segment8_mapped = 1; + battable[0x8].batl = BATL(0x80000000, BAT_I); + battable[0x8].batu = BATU(0x80000000); + battable[0x9].batl = BATL(0x90000000, BAT_I); + battable[0x9].batu = BATU(0x90000000); + battable[0xa].batl = BATL(0xa0000000, BAT_I); + battable[0xa].batu = BATU(0xa0000000); + segment8_a_mapped = 1; #if 0 if(system_type == POWER4e) { /* Map ISA I/O */ @@ -225,7 +229,7 @@ where = 3; __asm__ volatile ("mtdbatl 0,%0; mtdbatu 0,%1" :: "r"(battable[0].batl), "r"(battable[0].batu)); -#if 1 +#if 0 __asm__ volatile ("mtdbatl 1,%0; mtdbatu 1,%1" :: "r"(battable[1].batl), "r"(battable[1].batu)); __asm__ volatile ("sync;isync"); @@ -1096,6 +1100,12 @@ bus_space_map(t, bpa, size, cacheable, bshp) { return error; } + if ((bpa >= 0x80000000) && ((bpa+size) < 0xb0000000)) { + if (segment8_a_mapped) { + *bshp = bpa; + return 0; + } + } if (error = bus_mem_add_mapping(bpa, size, cacheable, bshp)) { if (extent_free(devio_ex, bpa, size, EX_NOWAIT | (ppc_malloc_ok ? EX_MALLOCOK : 0))) @@ -1206,9 +1216,8 @@ mapiodev(pa, len) spa = trunc_page(pa); off = pa - spa; size = round_page(off+len); - if ((pa >= 0x80000000) && ((pa+len) < 0x90000000)) { - extern int segment8_mapped; - if (segment8_mapped) { + if ((pa >= 0x80000000) && ((pa+len) < 0xb0000000)) { + if (segment8_a_mapped) { return (void *)pa; } } |