/* $NetBSD: irongate_bus_mem.c,v 1.13 2023/12/04 00:32:10 thorpej Exp $ */
/*-
* Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(1, "$NetBSD: irongate_bus_mem.c,v 1.13 2023/12/04 00:32:10 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/bus.h>
#include <alpha/pci/irongatereg.h>
#include <alpha/pci/irongatevar.h>
#define CHIP irongate
#define CHIP_MEM_ARENA(v) (((struct irongate_config *)(v))->ic_mem_arena)
#define CHIP_MEM_SYS_START(v) IRONGATE_MEM_BASE
/*
* AMD 751 core logic appears on EV6. We require at least EV56
* support for the assembler to emit BWX opcodes.
*/
__asm(".arch ev6");
#include <alpha/pci/pci_bwx_bus_mem_chipdep.c>
#include <sys/kcore.h>
#include <dev/isa/isareg.h>
extern phys_ram_seg_t mem_clusters[];
extern int mem_cluster_cnt;
void
irongate_bus_mem_init2(bus_space_tag_t t, void *v)
{
u_long size, start, end;
int i, error;
/*
* Since the AMD 751 doesn't have DMA windows, we need to
* reserve the space used by RAM in the PCI memory arena.
*/
for (i = 0; i < mem_cluster_cnt; i++) {
start = mem_clusters[i].start;
size = mem_clusters[i].size & ~PAGE_MASK;
end = mem_clusters[i].start + size;
if (start <= IOM_BEGIN && end >= IOM_END) {
/*
* The ISA hole lies somewhere in this
* memory cluster. The UP1000 firmware
* doesn't report this to us properly,
* so we have to cope, since devices are
* mapped into the ISA hole, but RAM is
* not.
*
* Sigh, the UP1000 is a really cool machine,
* but it is sometimes too PC-like for my
* taste.
*/
if (start < IOM_BEGIN) {
error = vmem_xalloc_addr(CHIP_MEM_ARENA(v),
start, (IOM_BEGIN - start), VM_NOSLEEP);
if (error) {
printf("WARNING: unable to reserve "
"chunk from mem cluster %d "
"(0x%lx - 0x%lx)\n", i,
start, (u_long) IOM_BEGIN - 1);
}
}
if (end > IOM_END) {
error = vmem_xalloc_addr(CHIP_MEM_ARENA(v),
IOM_END, (end - IOM_END), VM_NOSLEEP);
if (error) {
printf("WARNING: unable to reserve "
"chunk from mem cluster %d "
"(0x%lx - 0x%lx)\n", i,
(u_long) IOM_END, end - 1);
}
}
} else {
error = vmem_xalloc_addr(CHIP_MEM_ARENA(v),
start, size, VM_NOSLEEP);
if (error) {
printf("WARNING: unable reserve mem cluster %d "
"(0x%lx - 0x%lx)\n", i, start,
start + (size - 1));
}
}
}
}
