1 /* $NetBSD: pci_up1000.c,v 1.10 2008/04/28 20:23:11 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 33 34 __KERNEL_RCSID(0, "$NetBSD: pci_up1000.c,v 1.10 2008/04/28 20:23:11 martin Exp $"); 35 36 #include <sys/types.h> 37 #include <sys/param.h> 38 #include <sys/time.h> 39 #include <sys/systm.h> 40 #include <sys/errno.h> 41 #include <sys/device.h> 42 43 #include <uvm/uvm_extern.h> 44 45 #include <machine/autoconf.h> 46 #include <machine/bus.h> 47 #include <machine/intr.h> 48 49 #include <dev/isa/isavar.h> 50 51 #include <dev/pci/pcireg.h> 52 #include <dev/pci/pcivar.h> 53 #include <dev/pci/pciidereg.h> 54 #include <dev/pci/pciidevar.h> 55 56 #include <alpha/pci/irongatevar.h> 57 58 #include <alpha/pci/pci_up1000.h> 59 #include <alpha/pci/siovar.h> 60 #include <alpha/pci/sioreg.h> 61 62 #include "sio.h" 63 64 int api_up1000_intr_map(struct pci_attach_args *, pci_intr_handle_t *); 65 const char *api_up1000_intr_string(void *, pci_intr_handle_t); 66 const struct evcnt *api_up1000_intr_evcnt(void *, pci_intr_handle_t); 67 void *api_up1000_intr_establish(void *, pci_intr_handle_t, 68 int, int (*func)(void *), void *); 69 void api_up1000_intr_disestablish(void *, void *); 70 71 void *api_up1000_pciide_compat_intr_establish(void *, struct device *, 72 struct pci_attach_args *, int, int (*)(void *), void *); 73 74 void 75 pci_up1000_pickintr(struct irongate_config *icp) 76 { 77 #if NSIO 78 bus_space_tag_t iot = &icp->ic_iot; 79 pci_chipset_tag_t pc = &icp->ic_pc; 80 81 pc->pc_intr_v = icp; 82 pc->pc_intr_map = api_up1000_intr_map; 83 pc->pc_intr_string = api_up1000_intr_string; 84 pc->pc_intr_evcnt = api_up1000_intr_evcnt; 85 pc->pc_intr_establish = api_up1000_intr_establish; 86 pc->pc_intr_disestablish = api_up1000_intr_disestablish; 87 88 pc->pc_pciide_compat_intr_establish = 89 api_up1000_pciide_compat_intr_establish; 90 91 sio_intr_setup(pc, iot); 92 #else 93 panic("pci_up1000_pickintr: no I/O interrupt handler (no sio)"); 94 #endif 95 } 96 97 int 98 api_up1000_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 99 { 100 pci_chipset_tag_t pc = pa->pa_pc; 101 int buspin = pa->pa_intrpin; 102 int bustag = pa->pa_intrtag; 103 int line = pa->pa_intrline; 104 int bus, device, function; 105 106 if (buspin == 0) { 107 /* No IRQ used. */ 108 return 1; 109 } 110 if (buspin > 4) { 111 printf("api_up1000_intr_map: bad interrupt pin %d\n", 112 buspin); 113 return 1; 114 } 115 116 pci_decompose_tag(pc, bustag, &bus, &device, &function); 117 118 /* 119 * The console places the interrupt mapping in the "line" value. 120 * A value of (char)-1 indicates there is no mapping. 121 */ 122 if (line == 0xff) { 123 printf("api_up1000_intr_map: no mapping for %d/%d/%d\n", 124 bus, device, function); 125 return (1); 126 } 127 128 /* XXX Check for 0? */ 129 if (line > 15) { 130 printf("api_up1000_intr_map: ISA IRQ too large (%d)\n", 131 line); 132 return (1); 133 } 134 if (line == 2) { 135 printf("api_up1000_intr_map: changed IRQ 2 to IRQ 9\n"); 136 line = 9; 137 } 138 139 *ihp = line; 140 return (0); 141 } 142 143 const char * 144 api_up1000_intr_string(void *icv, pci_intr_handle_t ih) 145 { 146 #if 0 147 struct irongate_config *icp = icv; 148 #endif 149 150 return sio_intr_string(NULL /*XXX*/, ih); 151 } 152 153 const struct evcnt * 154 api_up1000_intr_evcnt(void *icv, pci_intr_handle_t ih) 155 { 156 #if 0 157 struct irongate_config *icp = icv; 158 #endif 159 160 return sio_intr_evcnt(NULL /*XXX*/, ih); 161 } 162 163 void * 164 api_up1000_intr_establish(void *icv, pci_intr_handle_t ih, int level, 165 int (*func)(void *), void *arg) 166 { 167 #if 0 168 struct irongate_config *icp = icv; 169 #endif 170 171 return sio_intr_establish(NULL /*XXX*/, ih, IST_LEVEL, level, func, 172 arg); 173 } 174 175 void 176 api_up1000_intr_disestablish(void *icv, void *cookie) 177 { 178 #if 0 179 struct irongate_config *icp = icv; 180 #endif 181 182 sio_intr_disestablish(NULL /*XXX*/, cookie); 183 } 184 185 void * 186 api_up1000_pciide_compat_intr_establish(void *icv, struct device *dev, 187 struct pci_attach_args *pa, int chan, int (*func)(void *), void *arg) 188 { 189 pci_chipset_tag_t pc = pa->pa_pc; 190 void *cookie = NULL; 191 int bus, irq; 192 193 pci_decompose_tag(pc, pa->pa_tag, &bus, NULL, NULL); 194 195 /* 196 * If this isn't PCI bus #0, all bets are off. 197 */ 198 if (bus != 0) 199 return (NULL); 200 201 irq = PCIIDE_COMPAT_IRQ(chan); 202 #if NSIO 203 cookie = sio_intr_establish(NULL /*XXX*/, irq, IST_EDGE, IPL_BIO, 204 func, arg); 205 if (cookie == NULL) 206 return (NULL); 207 printf("%s: %s channel interrupting at %s\n", dev->dv_xname, 208 PCIIDE_CHANNEL_NAME(chan), sio_intr_string(NULL /*XXX*/, irq)); 209 #endif 210 return (cookie); 211 } 212