1 /* $NetBSD: cp3100_pci.c,v 1.5 2018/11/16 15:06:23 jmcneill Exp $ */ 2 3 /* 4 * Copyright 2006 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Steve C. Woodford 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 * CP3100 PCI interrupt support. 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: cp3100_pci.c,v 1.5 2018/11/16 15:06:23 jmcneill 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 <sys/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(const struct pci_attach_args *, 62 pci_intr_handle_t *); 63 const char *iq80321_pci_intr_string(void *, pci_intr_handle_t, char *, size_t); 64 const struct evcnt *iq80321_pci_intr_evcnt(void *, pci_intr_handle_t); 65 void *iq80321_pci_intr_establish(void *, pci_intr_handle_t, 66 int, int (*func)(void *), void *, const char *); 67 void iq80321_pci_intr_disestablish(void *, void *); 68 69 void 70 iq80321_pci_init(pci_chipset_tag_t pc, void *cookie) 71 { 72 73 pc->pc_intr_v = cookie; /* the i80321 softc */ 74 pc->pc_intr_map = iq80321_pci_intr_map; 75 pc->pc_intr_string = iq80321_pci_intr_string; 76 pc->pc_intr_evcnt = iq80321_pci_intr_evcnt; 77 pc->pc_intr_establish = iq80321_pci_intr_establish; 78 pc->pc_intr_disestablish = iq80321_pci_intr_disestablish; 79 } 80 81 int 82 iq80321_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 83 { 84 struct i80321_softc *sc = pa->pa_pc->pc_intr_v; 85 int b, d, f; 86 uint32_t busno; 87 88 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 89 busno = PCIXSR_BUSNO(busno); 90 if (busno == 0xff) 91 busno = 0; 92 93 pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f); 94 95 /* No mappings for devices not on our bus. */ 96 if (b != busno) 97 goto no_mapping; 98 99 switch (d) { 100 case 0: /* i82546EB Dual GigE */ 101 /* 102 * This is a dual-function chip which uses INTA and INTB, 103 * connected to XINT0 and XINT1 respectively. 104 */ 105 if (f != 0 && f != 1) 106 goto no_mapping; 107 *ihp = ICU_INT_XINT(f); 108 return (0); 109 110 case 1: /* i31244 S-ATA Interface */ 111 *ihp = ICU_INT_XINT(2); 112 return (0); 113 114 case 2: /* Symbios Logic 53c1010 SCSI Controllers */ 115 case 3: 116 /* 117 * Both controllers share a single pin 118 */ 119 *ihp = ICU_INT_XINT(3); 120 return (0); 121 122 default: 123 no_mapping: 124 printf("iq80321_pci_intr_map: no mapping for %d/%d/%d/%c\n", 125 pa->pa_bus, pa->pa_device, pa->pa_function, 126 '@' + pa->pa_intrpin); 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, char *buf, size_t len) 135 { 136 137 strlcpy(buf, i80321_irqnames[ih], len); 138 return buf; 139 } 140 141 const struct evcnt * 142 iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih) 143 { 144 145 /* XXX For now. */ 146 return (NULL); 147 } 148 149 void * 150 iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl, 151 int (*func)(void *), void *arg, const char *xname) 152 { 153 154 return (i80321_intr_establish(ih, ipl, func, arg)); 155 } 156 157 void 158 iq80321_pci_intr_disestablish(void *v, void *cookie) 159 { 160 161 i80321_intr_disestablish(cookie); 162 } 163