1 /* $NetBSD: npwr_fc_pci.c,v 1.4 2014/03/29 19:28:28 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: npwr_fc_pci.c,v 1.4 2014/03/29 19:28:28 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 <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 *); 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 /* 89 * The IQ80321's interrupts are routed like so: 90 * 91 * XINT0 i82544 Gig-E 92 * 93 * XINT1 UART 94 * 95 * XINT2 INTA# from S-PCI-X slot 96 * 97 * XINT3 INTB# from S-PCI-X slot 98 */ 99 100 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 101 busno = PCIXSR_BUSNO(busno); 102 if (busno == 0xff) 103 busno = 0; 104 105 pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f); 106 107 /* No mappings for devices not on our bus. */ 108 if (b != busno) 109 goto no_mapping; 110 111 switch (d) { 112 case 0: /* i82546 Dual Gig-E */ 113 if (pa->pa_intrpin == 1) { 114 *ihp = ICU_INT_XINT(0); 115 return (0); 116 } 117 if (pa->pa_intrpin == 2) { 118 *ihp = ICU_INT_XINT(1); 119 return (0); 120 } 121 goto no_mapping; 122 123 case 1: /* i31244 SATA */ 124 if (pa->pa_intrpin == 1) { 125 *ihp = ICU_INT_XINT(2); 126 return (0); 127 } 128 goto no_mapping; 129 130 case 2: /* LSI Fibre */ 131 if (pa->pa_intrpin == 1) { 132 *ihp = ICU_INT_XINT(3); 133 return (0); 134 } 135 goto no_mapping; 136 137 default: 138 no_mapping: 139 printf("iq80321_pci_intr_map: no mapping for %d/%d/%d\n", 140 pa->pa_bus, pa->pa_device, pa->pa_function); 141 return (1); 142 } 143 144 return (0); 145 } 146 147 const char * 148 iq80321_pci_intr_string(void *v, pci_intr_handle_t ih, char *buf, size_t len) 149 { 150 151 strlcpy(buf, i80321_irqnames[ih], len); 152 return buf; 153 } 154 155 const struct evcnt * 156 iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih) 157 { 158 159 /* XXX For now. */ 160 return (NULL); 161 } 162 163 void * 164 iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl, 165 int (*func)(void *), void *arg) 166 { 167 168 return (i80321_intr_establish(ih, ipl, func, arg)); 169 } 170 171 void 172 iq80321_pci_intr_disestablish(void *v, void *cookie) 173 { 174 175 i80321_intr_disestablish(cookie); 176 } 177