0fb6b9a8f8
Rather than an "iointr" routine that decomposes a vector into an IRQ, we maintain a vector table directly, hooking up each "iointr" routine at the correct vector. This also allows us to hook device interrupts up to specific vectors (c.f. Jensen). We can shave even more cycles off, here, and I will, but it requires some changes to the alpha_shared_intr stuff.
219 lines
6.1 KiB
C
219 lines
6.1 KiB
C
/* $NetBSD: pci_up1000.c,v 1.7 2001/07/27 00:25:20 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 1.7 2001/07/27 00:25:20 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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alpha_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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alpha_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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