143 lines
4.6 KiB
C
143 lines
4.6 KiB
C
/* $NetBSD: irongate_bus_mem.c,v 1.7 2001/04/17 21:52:00 thorpej Exp $ */
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/*-
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* Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(1, "$NetBSD: irongate_bus_mem.c,v 1.7 2001/04/17 21:52:00 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <uvm/uvm_extern.h>
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#include <machine/bus.h>
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#include <alpha/pci/irongatereg.h>
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#include <alpha/pci/irongatevar.h>
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#define CHIP irongate
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#define CHIP_EX_MALLOC_SAFE(v) (((struct irongate_config *)(v))->ic_mallocsafe)
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#define CHIP_MEM_EXTENT(v) (((struct irongate_config *)(v))->ic_mem_ex)
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#define CHIP_MEM_SYS_START(v) IRONGATE_MEM_BASE
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/*
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* AMD 751 core logic appears on EV6. We require at least EV56
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* support for the assembler to emit BWX opcodes.
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*/
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__asm(".arch ev6");
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#include <alpha/pci/pci_bwx_bus_mem_chipdep.c>
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#include <sys/kcore.h>
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#include <dev/isa/isareg.h>
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extern phys_ram_seg_t mem_clusters[];
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extern int mem_cluster_cnt;
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void
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irongate_bus_mem_init2(bus_space_tag_t t, void *v)
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{
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u_long size, start, end;
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int i, error;
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/*
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* Since the AMD 751 doesn't have DMA windows, we need to
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* allocate RAM out of the extent map.
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*/
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for (i = 0; i < mem_cluster_cnt; i++) {
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start = mem_clusters[i].start;
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size = mem_clusters[i].size & ~PAGE_MASK;
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end = mem_clusters[i].start + size;
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if (start <= IOM_BEGIN && end >= IOM_END) {
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/*
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* The ISA hole lies somewhere in this
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* memory cluster. The UP1000 firmware
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* doesn't report this to us properly,
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* so we have to cope, since devices are
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* mapped into the ISA hole, but RAM is
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* not.
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*
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* Sigh, the UP1000 is a really cool machine,
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* but it is sometimes too PC-like for my
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* taste.
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*/
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if (start < IOM_BEGIN) {
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error = extent_alloc_region(CHIP_MEM_EXTENT(v),
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start, (IOM_BEGIN - start),
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EX_NOWAIT |
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(CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
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if (error) {
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printf("WARNING: unable to reserve "
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"chunk from mem cluster %d "
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"(0x%lx - 0x%lx)\n", i,
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start, (u_long) IOM_BEGIN - 1);
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}
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}
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if (end > IOM_END) {
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error = extent_alloc_region(CHIP_MEM_EXTENT(v),
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IOM_END, (end - IOM_END),
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EX_NOWAIT |
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(CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
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if (error) {
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printf("WARNING: unable to reserve "
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"chunk from mem cluster %d "
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"(0x%lx - 0x%lx)\n", i,
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(u_long) IOM_END, end - 1);
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}
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}
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} else {
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error = extent_alloc_region(CHIP_MEM_EXTENT(v),
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start, size,
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EX_NOWAIT |
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(CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
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if (error) {
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printf("WARNING: unable reserve mem cluster %d "
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"(0x%lx - 0x%lx)\n", i, start,
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start + (size - 1));
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}
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}
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}
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}
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