1 /* $NetBSD: iq80321_pci.c,v 1.5 2005/12/11 12:17:09 christos 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/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: iq80321_pci.c,v 1.5 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 61 int iq80321_pci_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 62 const char *iq80321_pci_intr_string(void *, pci_intr_handle_t); 63 const struct evcnt *iq80321_pci_intr_evcnt(void *, pci_intr_handle_t); 64 void *iq80321_pci_intr_establish(void *, pci_intr_handle_t, 65 int, int (*func)(void *), void *); 66 void iq80321_pci_intr_disestablish(void *, void *); 67 68 void 69 iq80321_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 80 int 81 iq80321_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 /* 88 * The IQ80321's interrupts are routed like so: 89 * 90 * XINT0 i82544 Gig-E 91 * 92 * XINT1 UART 93 * 94 * XINT2 INTA# from S-PCI-X slot 95 * 96 * XINT3 INTB# from S-PCI-X slot 97 */ 98 99 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 100 busno = PCIXSR_BUSNO(busno); 101 if (busno == 0xff) 102 busno = 0; 103 104 pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f); 105 106 /* No mappings for devices not on our bus. */ 107 if (b != busno) 108 goto no_mapping; 109 110 switch (d) { 111 case 4: /* i82544 Gig-E */ 112 if (pa->pa_intrpin == 1) { 113 *ihp = ICU_INT_XINT(0); 114 return (0); 115 } 116 goto no_mapping; 117 118 case 6: /* S-PCI-X slot */ 119 if (pa->pa_intrpin == 1) { 120 *ihp = ICU_INT_XINT(2); 121 return (0); 122 } 123 if (pa->pa_intrpin == 2) { 124 *ihp = ICU_INT_XINT(3); 125 return (0); 126 } 127 goto no_mapping; 128 129 default: 130 no_mapping: 131 printf("iq80321_pci_intr_map: no mapping for %d/%d/%d\n", 132 pa->pa_bus, pa->pa_device, pa->pa_function); 133 return (1); 134 } 135 136 return (0); 137 } 138 139 const char * 140 iq80321_pci_intr_string(void *v, pci_intr_handle_t ih) 141 { 142 143 return (i80321_irqnames[ih]); 144 } 145 146 const struct evcnt * 147 iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih) 148 { 149 150 /* XXX For now. */ 151 return (NULL); 152 } 153 154 void * 155 iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl, 156 int (*func)(void *), void *arg) 157 { 158 159 return (i80321_intr_establish(ih, ipl, func, arg)); 160 } 161 162 void 163 iq80321_pci_intr_disestablish(void *v, void *cookie) 164 { 165 166 i80321_intr_disestablish(cookie); 167 } 168