1 /* $NetBSD: irongate_bus_mem.c,v 1.7 2001/04/17 21:52:00 thorpej 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 40 41 __KERNEL_RCSID(1, "$NetBSD: irongate_bus_mem.c,v 1.7 2001/04/17 21:52:00 thorpej Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/malloc.h> 46 #include <sys/syslog.h> 47 #include <sys/device.h> 48 49 #include <uvm/uvm_extern.h> 50 51 #include <machine/bus.h> 52 53 #include <alpha/pci/irongatereg.h> 54 #include <alpha/pci/irongatevar.h> 55 56 #define CHIP irongate 57 58 #define CHIP_EX_MALLOC_SAFE(v) (((struct irongate_config *)(v))->ic_mallocsafe) 59 #define CHIP_MEM_EXTENT(v) (((struct irongate_config *)(v))->ic_mem_ex) 60 61 #define CHIP_MEM_SYS_START(v) IRONGATE_MEM_BASE 62 63 /* 64 * AMD 751 core logic appears on EV6. We require at least EV56 65 * support for the assembler to emit BWX opcodes. 66 */ 67 __asm(".arch ev6"); 68 69 #include <alpha/pci/pci_bwx_bus_mem_chipdep.c> 70 71 #include <sys/kcore.h> 72 73 #include <dev/isa/isareg.h> 74 75 extern phys_ram_seg_t mem_clusters[]; 76 extern int mem_cluster_cnt; 77 78 void 79 irongate_bus_mem_init2(bus_space_tag_t t, void *v) 80 { 81 u_long size, start, end; 82 int i, error; 83 84 /* 85 * Since the AMD 751 doesn't have DMA windows, we need to 86 * allocate RAM out of the extent map. 87 */ 88 for (i = 0; i < mem_cluster_cnt; i++) { 89 start = mem_clusters[i].start; 90 size = mem_clusters[i].size & ~PAGE_MASK; 91 end = mem_clusters[i].start + size; 92 93 if (start <= IOM_BEGIN && end >= IOM_END) { 94 /* 95 * The ISA hole lies somewhere in this 96 * memory cluster. The UP1000 firmware 97 * doesn't report this to us properly, 98 * so we have to cope, since devices are 99 * mapped into the ISA hole, but RAM is 100 * not. 101 * 102 * Sigh, the UP1000 is a really cool machine, 103 * but it is sometimes too PC-like for my 104 * taste. 105 */ 106 if (start < IOM_BEGIN) { 107 error = extent_alloc_region(CHIP_MEM_EXTENT(v), 108 start, (IOM_BEGIN - start), 109 EX_NOWAIT | 110 (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0)); 111 if (error) { 112 printf("WARNING: unable to reserve " 113 "chunk from mem cluster %d " 114 "(0x%lx - 0x%lx)\n", i, 115 start, (u_long) IOM_BEGIN - 1); 116 } 117 } 118 if (end > IOM_END) { 119 error = extent_alloc_region(CHIP_MEM_EXTENT(v), 120 IOM_END, (end - IOM_END), 121 EX_NOWAIT | 122 (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0)); 123 if (error) { 124 printf("WARNING: unable to reserve " 125 "chunk from mem cluster %d " 126 "(0x%lx - 0x%lx)\n", i, 127 (u_long) IOM_END, end - 1); 128 } 129 } 130 } else { 131 error = extent_alloc_region(CHIP_MEM_EXTENT(v), 132 start, size, 133 EX_NOWAIT | 134 (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0)); 135 if (error) { 136 printf("WARNING: unable reserve mem cluster %d " 137 "(0x%lx - 0x%lx)\n", i, start, 138 start + (size - 1)); 139 } 140 } 141 } 142 } 143