295 lines
7.9 KiB
C
295 lines
7.9 KiB
C
/* $NetBSD: eisa_machdep.c,v 1.32 2008/06/27 11:12:06 cegger Exp $ */
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/*-
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* Copyright (c) 1997, 1998 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 of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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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*
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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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/*
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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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: eisa_machdep.c,v 1.32 2008/06/27 11:12:06 cegger Exp $");
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#include "ioapic.h"
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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 <machine/bus.h>
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#include <machine/bus_private.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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#if NIOAPIC > 0
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#include <machine/i82093var.h>
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#include <machine/mpbiosvar.h>
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#endif
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/*
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* EISA doesn't have any special needs; just use the generic versions
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* of these funcions.
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*/
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struct x86_bus_dma_tag eisa_bus_dma_tag = {
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0, /* _tag_needs_free */
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0, /* _bounce_thresh */
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0, /* _bounce_alloc_lo */
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0, /* _bounce_alloc_hi */
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NULL, /* _may_bounce */
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_bus_dmamap_create,
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_bus_dmamap_destroy,
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_bus_dmamap_load,
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_bus_dmamap_load_mbuf,
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_bus_dmamap_load_uio,
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_bus_dmamap_load_raw,
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_bus_dmamap_unload,
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NULL, /* _dmamap_sync */
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_bus_dmamem_alloc,
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_bus_dmamem_free,
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_bus_dmamem_map,
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_bus_dmamem_unmap,
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_bus_dmamem_mmap,
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_bus_dmatag_subregion,
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_bus_dmatag_destroy,
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};
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void
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eisa_attach_hook(device_t parent, device_t self,
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struct eisabus_attach_args *eba)
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{
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extern int eisa_has_been_seen;
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/*
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* Notify others that might need to know that the EISA bus
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* has now been attached.
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*/
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if (eisa_has_been_seen)
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panic("eisaattach: EISA bus already seen!");
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eisa_has_been_seen = 1;
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}
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int
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eisa_maxslots(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(eisa_chipset_tag_t ec, u_int irq,
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eisa_intr_handle_t *ihp)
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{
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if (irq >= NUM_LEGACY_IRQS) {
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aprint_error("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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aprint_verbose("eisa_intr_map: changed IRQ 2 to IRQ 9\n");
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irq = 9;
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}
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#if NIOAPIC > 0
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if (mp_busses != NULL) {
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if (intr_find_mpmapping(mp_eisa_bus, irq, ihp) == 0 ||
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intr_find_mpmapping(mp_isa_bus, irq, ihp) == 0) {
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*ihp |= irq;
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return 0;
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} else
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aprint_verbose("eisa_intr_map: no MP mapping found\n");
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}
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#endif
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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(eisa_chipset_tag_t ec, 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 & 0xff) >= NUM_LEGACY_IRQS || ih == 2)
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panic("eisa_intr_string: bogus handle 0x%x", ih);
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#if NIOAPIC > 0
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if (ih & APIC_INT_VIA_APIC)
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snprintf(irqstr, sizeof(irqstr), "apic %d int %d (irq %d)",
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APIC_IRQ_APIC(ih),
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APIC_IRQ_PIN(ih),
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ih&0xff);
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else
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snprintf(irqstr, sizeof(irqstr), "irq %d", ih&0xff);
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#else
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snprintf(irqstr, sizeof(irqstr), "irq %d", ih);
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#endif
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return (irqstr);
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}
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const struct evcnt *
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eisa_intr_evcnt(eisa_chipset_tag_t ec, eisa_intr_handle_t ih)
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{
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/* XXX for now, no evcnt parent reported */
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return NULL;
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}
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void *
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eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih,
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int type, int level, int (*func)(void *), void *arg)
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{
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int pin, irq;
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struct pic *pic;
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pic = &i8259_pic;
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pin = irq = ih;
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#if NIOAPIC > 0
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if (ih & APIC_INT_VIA_APIC) {
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pic = (struct pic *)ioapic_find(APIC_IRQ_APIC(ih));
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if (pic == NULL) {
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aprint_error("eisa_intr_establish: bad ioapic %d\n",
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APIC_IRQ_APIC(ih));
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return NULL;
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}
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pin = APIC_IRQ_PIN(ih);
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irq = APIC_IRQ_LEGACY_IRQ(ih);
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if (irq < 0 || irq >= NUM_LEGACY_IRQS)
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irq = -1;
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}
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#endif
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return intr_establish(irq, pic, pin, type, level, func, arg, false);
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}
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void
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eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie)
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{
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intr_disestablish(cookie);
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}
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int
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eisa_mem_alloc(bus_space_tag_t t, bus_size_t size, bus_size_t align,
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bus_addr_t boundary, int cacheable,
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bus_addr_t *addrp, 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(bus_space_tag_t t, bus_space_handle_t bah, 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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int
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eisa_conf_read_mem(eisa_chipset_tag_t ec, int slot,
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int func, int entry, struct eisa_cfg_mem *ecm)
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{
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/* XXX XXX XXX */
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return (ENOENT);
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}
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int
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eisa_conf_read_irq(eisa_chipset_tag_t ec, int slot,
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int func, int entry, struct eisa_cfg_irq *eci)
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{
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/* XXX XXX XXX */
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return (ENOENT);
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}
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int
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eisa_conf_read_dma(eisa_chipset_tag_t ec, int slot,
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int func, int entry, struct eisa_cfg_dma *ecd)
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{
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/* XXX XXX XXX */
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return (ENOENT);
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}
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int
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eisa_conf_read_io(eisa_chipset_tag_t ec, int slot,
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int func, int entry, struct eisa_cfg_io *ecio)
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{
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/* XXX XXX XXX */
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return (ENOENT);
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}
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