iq31244_pci.c revision 1.3
1/* $NetBSD: iq31244_pci.c,v 1.3 2005/12/11 12:17:09 christos Exp $ */ 2 3/* 4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * IQ31244 PCI interrupt support. 40 */ 41 42#include <sys/cdefs.h> 43__KERNEL_RCSID(0, "$NetBSD: iq31244_pci.c,v 1.3 2005/12/11 12:17:09 christos Exp $"); 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/device.h> 48 49#include <machine/autoconf.h> 50#include <machine/bus.h> 51 52#include <evbarm/iq80321/iq80321reg.h> 53#include <evbarm/iq80321/iq80321var.h> 54 55#include <arm/xscale/i80321reg.h> 56#include <arm/xscale/i80321var.h> 57 58#include <dev/pci/pcidevs.h> 59#include <dev/pci/ppbreg.h> 60 61int iq80321_pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 62const char *iq80321_pci_intr_string(void *, pci_intr_handle_t); 63const struct evcnt *iq80321_pci_intr_evcnt(void *, pci_intr_handle_t); 64void *iq80321_pci_intr_establish(void *, pci_intr_handle_t, 65 int, int (*func)(void *), void *); 66void iq80321_pci_intr_disestablish(void *, void *); 67 68void 69iq80321_pci_init(pci_chipset_tag_t pc, void *cookie) 70{ 71 72 pc->pc_intr_v = cookie; /* the i80321 softc */ 73 pc->pc_intr_map = iq80321_pci_intr_map; 74 pc->pc_intr_string = iq80321_pci_intr_string; 75 pc->pc_intr_evcnt = iq80321_pci_intr_evcnt; 76 pc->pc_intr_establish = iq80321_pci_intr_establish; 77 pc->pc_intr_disestablish = iq80321_pci_intr_disestablish; 78} 79 80int 81iq80321_pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 82{ 83 struct i80321_softc *sc = pa->pa_pc->pc_intr_v; 84 int b, d, f; 85 uint32_t busno; 86 87 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 88 busno = PCIXSR_BUSNO(busno); 89 if (busno == 0xff) 90 busno = 0; 91 92 pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f); 93 94 /* No mappings for devices not on our bus. */ 95 if (b != busno) 96 goto no_mapping; 97 98 switch (d) { 99 case 1: /* PCIX-PCIX bridge */ 100 /* 101 * The S-ATA chips are behind the bridge, and all of 102 * the S-ATA interrupts are wired together. 103 */ 104 *ihp = ICU_INT_XINT(2); 105 return (0); 106 107 case 2: /* PCI slot */ 108 /* All pins are wired together. */ 109 *ihp = ICU_INT_XINT(3); 110 return (0); 111 112 case 3: /* i82546 dual Gig-E */ 113 if (pa->pa_intrpin == 1 || pa->pa_intrpin == 2) { 114 *ihp = ICU_INT_XINT(0); 115 return (0); 116 } 117 goto no_mapping; 118 119 default: 120 no_mapping: 121 printf("iq80321_pci_intr_map: no mapping for %d/%d/%d/%c\n", 122 pa->pa_bus, pa->pa_device, pa->pa_function, 123 '@' + pa->pa_intrpin); 124 return (1); 125 } 126 127 return (0); 128} 129 130const char * 131iq80321_pci_intr_string(void *v, pci_intr_handle_t ih) 132{ 133 134 return (i80321_irqnames[ih]); 135} 136 137const struct evcnt * 138iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih) 139{ 140 141 /* XXX For now. */ 142 return (NULL); 143} 144 145void * 146iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl, 147 int (*func)(void *), void *arg) 148{ 149 150 return (i80321_intr_establish(ih, ipl, func, arg)); 151} 152 153void 154iq80321_pci_intr_disestablish(void *v, void *cookie) 155{ 156 157 i80321_intr_disestablish(cookie); 158} 159