Annotation of sys/arch/alpha/pci/irongate_bus_mem.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: irongate_bus_mem.c,v 1.5 2001/11/06 19:53:13 miod 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: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: #include <sys/param.h>
41: #include <sys/systm.h>
42: #include <sys/malloc.h>
43: #include <sys/syslog.h>
44: #include <sys/device.h>
45:
46: #include <uvm/uvm_extern.h>
47:
48: #include <machine/bus.h>
49:
50: #include <alpha/pci/irongatereg.h>
51: #include <alpha/pci/irongatevar.h>
52:
53: #define CHIP irongate
54:
55: #define CHIP_EX_MALLOC_SAFE(v) (((struct irongate_config *)(v))->ic_mallocsafe)
56: #define CHIP_MEM_EXTENT(v) (((struct irongate_config *)(v))->ic_mem_ex)
57:
58: #define CHIP_MEM_SYS_START(v) IRONGATE_MEM_BASE
59:
60: /*
61: * AMD 751 core logic appears on EV6. We require at least EV56
62: * support for the assembler to emit BWX opcodes.
63: */
64: __asm(".arch ev6");
65:
66: #include <alpha/pci/pci_bwx_bus_mem_chipdep.c>
67:
68: #include <sys/kcore.h>
69:
70: #include <dev/isa/isareg.h>
71:
72: extern phys_ram_seg_t mem_clusters[];
73: extern int mem_cluster_cnt;
74:
75: void
76: irongate_bus_mem_init2(bus_space_tag_t t, void *v)
77: {
78: u_long size, start, end;
79: int i, error;
80:
81: /*
82: * Since the AMD 751 doesn't have DMA windows, we need to
83: * allocate RAM out of the extent map.
84: */
85: for (i = 0; i < mem_cluster_cnt; i++) {
86: start = mem_clusters[i].start;
87: size = mem_clusters[i].size & ~PAGE_MASK;
88: end = mem_clusters[i].start + size;
89:
90: if (start <= IOM_BEGIN && end >= IOM_END) {
91: /*
92: * The ISA hole lies somewhere in this
93: * memory cluster. The UP1000 firmware
94: * doesn't report this to us properly,
95: * so we have to cope, since devices are
96: * mapped into the ISA hole, but RAM is
97: * not.
98: *
99: * Sigh, the UP1000 is a really cool machine,
100: * but it is sometimes too PC-like for my
101: * taste.
102: */
103: if (start < IOM_BEGIN) {
104: error = extent_alloc_region(CHIP_MEM_EXTENT(v),
105: start, (IOM_BEGIN - start),
106: EX_NOWAIT |
107: (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
108: if (error) {
109: printf("WARNING: unable to reserve "
110: "chunk from mem cluster %d "
111: "(0x%lx - 0x%lx)\n", i,
112: start, (u_long) IOM_BEGIN - 1);
113: }
114: }
115: if (end > IOM_END) {
116: error = extent_alloc_region(CHIP_MEM_EXTENT(v),
117: IOM_END, (end - IOM_END),
118: EX_NOWAIT |
119: (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
120: if (error) {
121: printf("WARNING: unable to reserve "
122: "chunk from mem cluster %d "
123: "(0x%lx - 0x%lx)\n", i,
124: (u_long) IOM_END, end - 1);
125: }
126: }
127: } else {
128: error = extent_alloc_region(CHIP_MEM_EXTENT(v),
129: start, size,
130: EX_NOWAIT |
131: (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
132: if (error) {
133: printf("WARNING: unable reserve mem cluster %d "
134: "(0x%lx - 0x%lx)\n", i, start,
135: start + (size - 1));
136: }
137: }
138: }
139: }
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