1 /* $NetBSD: iq80321_pci.c,v 1.1 2002/03/27 21:51:29 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 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 * IQ80321 PCI interrupt support. 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 46 #include <machine/autoconf.h> 47 #include <machine/bus.h> 48 49 #include <evbarm/iq80321/iq80321reg.h> 50 #include <evbarm/iq80321/iq80321var.h> 51 52 #include <arm/xscale/i80321reg.h> 53 #include <arm/xscale/i80321var.h> 54 55 #include <dev/pci/pcidevs.h> 56 #include <dev/pci/ppbreg.h> 57 58 int iq80321_pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 59 const char *iq80321_pci_intr_string(void *, pci_intr_handle_t); 60 const struct evcnt *iq80321_pci_intr_evcnt(void *, pci_intr_handle_t); 61 void *iq80321_pci_intr_establish(void *, pci_intr_handle_t, 62 int, int (*func)(void *), void *); 63 void iq80321_pci_intr_disestablish(void *, void *); 64 65 void 66 iq80321_pci_init(pci_chipset_tag_t pc, void *cookie) 67 { 68 69 pc->pc_intr_v = cookie; /* the i80321 softc */ 70 pc->pc_intr_map = iq80321_pci_intr_map; 71 pc->pc_intr_string = iq80321_pci_intr_string; 72 pc->pc_intr_evcnt = iq80321_pci_intr_evcnt; 73 pc->pc_intr_establish = iq80321_pci_intr_establish; 74 pc->pc_intr_disestablish = iq80321_pci_intr_disestablish; 75 } 76 77 int 78 iq80321_pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 79 { 80 struct i80321_softc *sc = pa->pa_pc->pc_intr_v; 81 uint32_t busno; 82 83 /* 84 * The IQ80321's interrupts are routed like so: 85 * 86 * XINT0 i82544 Gig-E 87 * 88 * XINT1 UART 89 * 90 * XINT2 INTA# from S-PCI-X slot 91 * 92 * XINT3 INTB# from S-PCI-X slot 93 */ 94 95 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 96 busno = PCIXSR_BUSNO(busno); 97 if (busno == 0xff) 98 busno = 0; 99 100 /* No mappings for devices not on our bus. */ 101 if (pa->pa_bus != busno) 102 goto no_mapping; 103 104 switch (pa->pa_device) { 105 case 4: /* i82544 Gig-E */ 106 if (pa->pa_intrpin == 1) { 107 *ihp = ICU_INT_XINT(0); 108 return (0); 109 } 110 goto no_mapping; 111 112 case 6: /* S-PCI-X slot */ 113 if (pa->pa_intrpin == 1) { 114 *ihp = ICU_INT_XINT(2); 115 return (0); 116 } 117 if (pa->pa_intrpin == 2) { 118 *ihp = ICU_INT_XINT(3); 119 return (0); 120 } 121 goto no_mapping; 122 123 default: 124 no_mapping: 125 printf("iq80321_pci_intr_map: no mapping for %d/%d/%d\n", 126 pa->pa_bus, pa->pa_device, pa->pa_function); 127 return (1); 128 } 129 130 return (0); 131 } 132 133 const char * 134 iq80321_pci_intr_string(void *v, pci_intr_handle_t ih) 135 { 136 static char irqstr[IRQNAMESIZE]; 137 138 sprintf(irqstr, "iop321 irq %ld", ih); 139 return (irqstr); 140 } 141 142 const struct evcnt * 143 iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih) 144 { 145 146 /* XXX For now. */ 147 return (NULL); 148 } 149 150 void * 151 iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl, 152 int (*func)(void *), void *arg) 153 { 154 155 return (i80321_intr_establish(ih, ipl, func, arg)); 156 } 157 158 void 159 iq80321_pci_intr_disestablish(void *v, void *cookie) 160 { 161 162 i80321_intr_disestablish(cookie); 163 } 164