b84a8f42d9
EISA bus physical address space. This i386 implementation allocates system physical address space after the end of RAM.
156 lines
3.9 KiB
C
156 lines
3.9 KiB
C
/* $NetBSD: eisa_machdep.c,v 1.5 1996/10/21 23:12:56 thorpej Exp $ */
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/*
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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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 Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Machine-specific functions for EISA autoconfiguration.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/extent.h>
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#include <i386/isa/icu.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/eisa/eisavar.h>
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void
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eisa_attach_hook(parent, self, eba)
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struct device *parent, *self;
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struct eisabus_attach_args *eba;
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{
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/* Nothing to do */
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}
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int
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eisa_maxslots(ec)
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eisa_chipset_tag_t ec;
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{
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/*
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* Always try 16 slots.
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*/
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return (16);
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}
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int
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eisa_intr_map(ec, irq, ihp)
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eisa_chipset_tag_t ec;
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u_int irq;
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eisa_intr_handle_t *ihp;
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{
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if (irq >= ICU_LEN) {
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printf("eisa_intr_map: bad IRQ %d\n", irq);
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*ihp = -1;
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return 1;
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}
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if (irq == 2) {
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printf("eisa_intr_map: changed IRQ 2 to IRQ 9\n");
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irq = 9;
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}
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*ihp = irq;
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return 0;
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}
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const char *
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eisa_intr_string(ec, ih)
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eisa_chipset_tag_t ec;
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eisa_intr_handle_t ih;
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{
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static char irqstr[8]; /* 4 + 2 + NULL + sanity */
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if (ih == 0 || ih >= ICU_LEN || ih == 2)
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panic("eisa_intr_string: bogus handle 0x%x\n", ih);
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sprintf(irqstr, "irq %d", ih);
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return (irqstr);
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}
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void *
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eisa_intr_establish(ec, ih, type, level, func, arg)
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eisa_chipset_tag_t ec;
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eisa_intr_handle_t ih;
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int type, level, (*func) __P((void *));
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void *arg;
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{
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if (ih == 0 || ih >= ICU_LEN || ih == 2)
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panic("eisa_intr_establish: bogus handle 0x%x\n", ih);
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return isa_intr_establish(NULL, ih, type, level, func, arg);
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}
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void
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eisa_intr_disestablish(ec, cookie)
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eisa_chipset_tag_t ec;
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void *cookie;
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{
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return isa_intr_disestablish(NULL, cookie);
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}
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int
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eisa_mem_alloc(t, size, align, boundary, cacheable, addrp, bahp)
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bus_space_tag_t t;
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bus_size_t size, align;
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bus_addr_t boundary;
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int cacheable;
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bus_addr_t *addrp;
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bus_space_handle_t *bahp;
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{
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extern struct extent *iomem_ex;
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/*
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* Allocate physical address space after the ISA hole.
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*/
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return bus_space_alloc(t, IOM_END, iomem_ex->ex_end, size, align,
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boundary, cacheable, addrp, bahp);
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}
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void
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eisa_mem_free(t, bah, size)
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bus_space_tag_t t;
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bus_space_handle_t bah;
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bus_size_t size;
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{
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bus_space_free(t, bah, size);
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}
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