1 /* $NetBSD: irongate_bus_mem.c,v 1.9 2010/12/15 01:27:18 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 33 34 __KERNEL_RCSID(1, "$NetBSD: irongate_bus_mem.c,v 1.9 2010/12/15 01:27:18 matt Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/malloc.h> 39 #include <sys/syslog.h> 40 #include <sys/device.h> 41 42 #include <machine/bus.h> 43 44 #include <alpha/pci/irongatereg.h> 45 #include <alpha/pci/irongatevar.h> 46 47 #define CHIP irongate 48 49 #define CHIP_EX_MALLOC_SAFE(v) (((struct irongate_config *)(v))->ic_mallocsafe) 50 #define CHIP_MEM_EXTENT(v) (((struct irongate_config *)(v))->ic_mem_ex) 51 52 #define CHIP_MEM_SYS_START(v) IRONGATE_MEM_BASE 53 54 /* 55 * AMD 751 core logic appears on EV6. We require at least EV56 56 * support for the assembler to emit BWX opcodes. 57 */ 58 __asm(".arch ev6"); 59 60 #include <alpha/pci/pci_bwx_bus_mem_chipdep.c> 61 62 #include <sys/kcore.h> 63 64 #include <dev/isa/isareg.h> 65 66 extern phys_ram_seg_t mem_clusters[]; 67 extern int mem_cluster_cnt; 68 69 void 70 irongate_bus_mem_init2(bus_space_tag_t t, void *v) 71 { 72 u_long size, start, end; 73 int i, error; 74 75 /* 76 * Since the AMD 751 doesn't have DMA windows, we need to 77 * allocate RAM out of the extent map. 78 */ 79 for (i = 0; i < mem_cluster_cnt; i++) { 80 start = mem_clusters[i].start; 81 size = mem_clusters[i].size & ~PAGE_MASK; 82 end = mem_clusters[i].start + size; 83 84 if (start <= IOM_BEGIN && end >= IOM_END) { 85 /* 86 * The ISA hole lies somewhere in this 87 * memory cluster. The UP1000 firmware 88 * doesn't report this to us properly, 89 * so we have to cope, since devices are 90 * mapped into the ISA hole, but RAM is 91 * not. 92 * 93 * Sigh, the UP1000 is a really cool machine, 94 * but it is sometimes too PC-like for my 95 * taste. 96 */ 97 if (start < IOM_BEGIN) { 98 error = extent_alloc_region(CHIP_MEM_EXTENT(v), 99 start, (IOM_BEGIN - start), 100 EX_NOWAIT | 101 (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0)); 102 if (error) { 103 printf("WARNING: unable to reserve " 104 "chunk from mem cluster %d " 105 "(0x%lx - 0x%lx)\n", i, 106 start, (u_long) IOM_BEGIN - 1); 107 } 108 } 109 if (end > IOM_END) { 110 error = extent_alloc_region(CHIP_MEM_EXTENT(v), 111 IOM_END, (end - IOM_END), 112 EX_NOWAIT | 113 (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0)); 114 if (error) { 115 printf("WARNING: unable to reserve " 116 "chunk from mem cluster %d " 117 "(0x%lx - 0x%lx)\n", i, 118 (u_long) IOM_END, end - 1); 119 } 120 } 121 } else { 122 error = extent_alloc_region(CHIP_MEM_EXTENT(v), 123 start, size, 124 EX_NOWAIT | 125 (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0)); 126 if (error) { 127 printf("WARNING: unable reserve mem cluster %d " 128 "(0x%lx - 0x%lx)\n", i, start, 129 start + (size - 1)); 130 } 131 } 132 } 133 } 134