Annotation of sys/arch/alpha/pci/irongate_bus_mem.c, Revision 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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