90e921d836
some MI PCI code that uses it, and soon there will be more. (The rationale for not making it available previously was that it could be mis-used, but that's true of a lot of things.)
219 lines
6.0 KiB
C
219 lines
6.0 KiB
C
/* $NetBSD: pci_up1000.c,v 1.8 2002/05/15 16:57:43 thorpej Exp $ */
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/*-
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* Copyright (c) 2000 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(0, "$NetBSD: pci_up1000.c,v 1.8 2002/05/15 16:57:43 thorpej Exp $");
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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 <uvm/uvm_extern.h>
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#include <machine/autoconf.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/isa/isavar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pciidereg.h>
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#include <dev/pci/pciidevar.h>
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#include <alpha/pci/irongatevar.h>
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#include <alpha/pci/pci_up1000.h>
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#include <alpha/pci/siovar.h>
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#include <alpha/pci/sioreg.h>
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#include "sio.h"
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int api_up1000_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
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const char *api_up1000_intr_string(void *, pci_intr_handle_t);
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const struct evcnt *api_up1000_intr_evcnt(void *, pci_intr_handle_t);
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void *api_up1000_intr_establish(void *, pci_intr_handle_t,
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int, int (*func)(void *), void *);
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void api_up1000_intr_disestablish(void *, void *);
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void *api_up1000_pciide_compat_intr_establish(void *, struct device *,
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struct pci_attach_args *, int, int (*)(void *), void *);
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void
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pci_up1000_pickintr(struct irongate_config *icp)
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{
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bus_space_tag_t iot = &icp->ic_iot;
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pci_chipset_tag_t pc = &icp->ic_pc;
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pc->pc_intr_v = icp;
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pc->pc_intr_map = api_up1000_intr_map;
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pc->pc_intr_string = api_up1000_intr_string;
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pc->pc_intr_evcnt = api_up1000_intr_evcnt;
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pc->pc_intr_establish = api_up1000_intr_establish;
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pc->pc_intr_disestablish = api_up1000_intr_disestablish;
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pc->pc_pciide_compat_intr_establish =
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api_up1000_pciide_compat_intr_establish;
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#if NSIO
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sio_intr_setup(pc, iot);
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#else
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panic("pci_up1000_pickintr: no I/O interrupt handler (no sio)");
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#endif
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}
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int
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api_up1000_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
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{
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pci_chipset_tag_t pc = pa->pa_pc;
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int buspin = pa->pa_intrpin;
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int bustag = pa->pa_intrtag;
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int line = pa->pa_intrline;
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int bus, device, function;
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if (buspin == 0) {
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/* No IRQ used. */
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return 1;
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}
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if (buspin > 4) {
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printf("api_up1000_intr_map: bad interrupt pin %d\n",
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buspin);
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return 1;
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}
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pci_decompose_tag(pc, bustag, &bus, &device, &function);
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/*
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* The console places the interrupt mapping in the "line" value.
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* A value of (char)-1 indicates there is no mapping.
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*/
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if (line == 0xff) {
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printf("api_up1000_intr_map: no mapping for %d/%d/%d\n",
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bus, device, function);
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return (1);
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}
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/* XXX Check for 0? */
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if (line > 15) {
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printf("api_up1000_intr_map: ISA IRQ too large (%d)\n",
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line);
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return (1);
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}
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if (line == 2) {
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printf("api_up1000_intr_map: changed IRQ 2 to IRQ 9\n");
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line = 9;
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}
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*ihp = line;
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return (0);
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}
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const char *
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api_up1000_intr_string(void *icv, pci_intr_handle_t ih)
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{
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#if 0
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struct irongate_config *icp = icv;
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#endif
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return sio_intr_string(NULL /*XXX*/, ih);
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}
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const struct evcnt *
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api_up1000_intr_evcnt(void *icv, pci_intr_handle_t ih)
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{
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#if 0
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struct irongate_config *icp = icv;
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#endif
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return sio_intr_evcnt(NULL /*XXX*/, ih);
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}
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void *
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api_up1000_intr_establish(void *icv, pci_intr_handle_t ih, int level,
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int (*func)(void *), void *arg)
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{
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#if 0
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struct irongate_config *icp = icv;
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#endif
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return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func,
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arg);
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}
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void
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api_up1000_intr_disestablish(void *icv, void *cookie)
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{
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#if 0
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struct irongate_config *icp = icv;
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#endif
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sio_intr_disestablish(NULL /*XXX*/, cookie);
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}
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void *
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api_up1000_pciide_compat_intr_establish(void *icv, struct device *dev,
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struct pci_attach_args *pa, int chan, int (*func)(void *), void *arg)
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{
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pci_chipset_tag_t pc = pa->pa_pc;
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void *cookie = NULL;
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int bus, irq;
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pci_decompose_tag(pc, pa->pa_tag, &bus, NULL, NULL);
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/*
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* If this isn't PCI bus #0, all bets are off.
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*/
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if (bus != 0)
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return (NULL);
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irq = PCIIDE_COMPAT_IRQ(chan);
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#if NSIO
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cookie = sio_intr_establish(NULL /*XXX*/, irq, IST_EDGE, IPL_BIO,
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func, arg);
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if (cookie == NULL)
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return (NULL);
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printf("%s: %s channel interrupting at %s\n", dev->dv_xname,
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PCIIDE_CHANNEL_NAME(chan), sio_intr_string(NULL /*XXX*/, irq));
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#endif
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return (cookie);
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}
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