1 /* $OpenBSD: irongate_bus_mem.c,v 1.6 2008/06/26 05:42:08 ray Exp $ */
2 /* $NetBSD: irongate_bus_mem.c,v 1.7 2001/04/17 21:52:00 thorpej Exp $ */
3
4 /*-
5 * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
36 #include <sys/syslog.h>
37 #include <sys/device.h>
38
39 #include <uvm/uvm_extern.h>
40
41 #include <machine/bus.h>
42
43 #include <alpha/pci/irongatereg.h>
44 #include <alpha/pci/irongatevar.h>
45
46 #define CHIP irongate
47
48 #define CHIP_EX_MALLOC_SAFE(v) (((struct irongate_config *)(v))->ic_mallocsafe)
49 #define CHIP_MEM_EXTENT(v) (((struct irongate_config *)(v))->ic_mem_ex)
50
51 #define CHIP_MEM_SYS_START(v) IRONGATE_MEM_BASE
52
53 /*
54 * AMD 751 core logic appears on EV6. We require at least EV56
55 * support for the assembler to emit BWX opcodes.
56 */
57 __asm(".arch ev6");
58
59 #include <alpha/pci/pci_bwx_bus_mem_chipdep.c>
60
61 #include <sys/kcore.h>
62
63 #include <dev/isa/isareg.h>
64
65 extern phys_ram_seg_t mem_clusters[];
66 extern int mem_cluster_cnt;
67
68 void
irongate_bus_mem_init2(bus_space_tag_t t,void * v)69 irongate_bus_mem_init2(bus_space_tag_t t, void *v)
70 {
71 u_long size, start, end;
72 int i, error;
73
74 /*
75 * Since the AMD 751 doesn't have DMA windows, we need to
76 * allocate RAM out of the extent map.
77 */
78 for (i = 0; i < mem_cluster_cnt; i++) {
79 start = mem_clusters[i].start;
80 size = mem_clusters[i].size & ~PAGE_MASK;
81 end = mem_clusters[i].start + size;
82
83 if (start <= IOM_BEGIN && end >= IOM_END) {
84 /*
85 * The ISA hole lies somewhere in this
86 * memory cluster. The UP1000 firmware
87 * doesn't report this to us properly,
88 * so we have to cope, since devices are
89 * mapped into the ISA hole, but RAM is
90 * not.
91 *
92 * Sigh, the UP1000 is a really cool machine,
93 * but it is sometimes too PC-like for my
94 * taste.
95 */
96 if (start < IOM_BEGIN) {
97 error = extent_alloc_region(CHIP_MEM_EXTENT(v),
98 start, (IOM_BEGIN - start),
99 EX_NOWAIT |
100 (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
101 if (error) {
102 printf("WARNING: unable to reserve "
103 "chunk from mem cluster %d "
104 "(0x%lx - 0x%lx)\n", i,
105 start, (u_long) IOM_BEGIN - 1);
106 }
107 }
108 if (end > IOM_END) {
109 error = extent_alloc_region(CHIP_MEM_EXTENT(v),
110 IOM_END, (end - IOM_END),
111 EX_NOWAIT |
112 (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
113 if (error) {
114 printf("WARNING: unable to reserve "
115 "chunk from mem cluster %d "
116 "(0x%lx - 0x%lx)\n", i,
117 (u_long) IOM_END, end - 1);
118 }
119 }
120 } else {
121 error = extent_alloc_region(CHIP_MEM_EXTENT(v),
122 start, size,
123 EX_NOWAIT |
124 (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
125 if (error) {
126 printf("WARNING: unable reserve mem cluster %d "
127 "(0x%lx - 0x%lx)\n", i, start,
128 start + (size - 1));
129 }
130 }
131 }
132 }
133