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 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