pci_machdep.c revision 1.6
1 /* $NetBSD: pci_machdep.c,v 1.6 2003/01/06 06:19:41 rafal Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Soren S. Jorvang 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed for the 18 * NetBSD Project. See http://www.netbsd.org/ for 19 * information about NetBSD. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/types.h> 36 #include <sys/param.h> 37 #include <sys/time.h> 38 #include <sys/systm.h> 39 #include <sys/errno.h> 40 #include <sys/device.h> 41 42 #include <uvm/uvm_extern.h> 43 44 #define _SGIMIPS_BUS_DMA_PRIVATE 45 #include <machine/bus.h> 46 #include <machine/intr.h> 47 48 #include <dev/pci/pcivar.h> 49 #include <dev/pci/pcireg.h> 50 #include <dev/pci/pcidevs.h> 51 52 /* 53 * PCI doesn't have any special needs; just use 54 * the generic versions of these functions. 55 */ 56 struct sgimips_bus_dma_tag pci_bus_dma_tag = { 57 _bus_dmamap_create, 58 _bus_dmamap_destroy, 59 _bus_dmamap_load, 60 _bus_dmamap_load_mbuf, 61 _bus_dmamap_load_uio, 62 _bus_dmamap_load_raw, 63 _bus_dmamap_unload, 64 _bus_dmamap_sync, 65 _bus_dmamem_alloc, 66 _bus_dmamem_free, 67 _bus_dmamem_map, 68 _bus_dmamem_unmap, 69 _bus_dmamem_mmap, 70 }; 71 72 void 73 pci_attach_hook(parent, self, pba) 74 struct device *parent, *self; 75 struct pcibus_attach_args *pba; 76 { 77 /* XXX */ 78 79 return; 80 } 81 82 int 83 pci_bus_maxdevs(pc, busno) 84 pci_chipset_tag_t pc; 85 int busno; 86 { 87 return 5; /* 2 on-board SCSI chips, slots 0, 1 and 2 */ 88 } 89 90 pcitag_t 91 pci_make_tag(pc, bus, device, function) 92 pci_chipset_tag_t pc; 93 int bus, device, function; 94 { 95 return (bus << 16) | (device << 11) | (function << 8); 96 } 97 98 void 99 pci_decompose_tag(pc, tag, bp, dp, fp) 100 pci_chipset_tag_t pc; 101 pcitag_t tag; 102 int *bp, *dp, *fp; 103 { 104 if (bp != NULL) 105 *bp = (tag >> 16) & 0xff; 106 if (dp != NULL) 107 *dp = (tag >> 11) & 0x1f; 108 if (fp != NULL) 109 *fp = (tag >> 8) & 0x07; 110 } 111 112 pcireg_t 113 pci_conf_read(pc, tag, reg) 114 pci_chipset_tag_t pc; 115 pcitag_t tag; 116 int reg; 117 { 118 return (*pc->pc_conf_read)(pc, tag, reg); 119 } 120 121 void 122 pci_conf_write(pc, tag, reg, data) 123 pci_chipset_tag_t pc; 124 pcitag_t tag; 125 int reg; 126 pcireg_t data; 127 { 128 (*pc->pc_conf_write)(pc, tag, reg, data); 129 } 130 131 int 132 pci_intr_map(pa, ihp) 133 struct pci_attach_args *pa; 134 pci_intr_handle_t *ihp; 135 { 136 pci_chipset_tag_t pc = pa->pa_pc; 137 pcitag_t intrtag = pa->pa_intrtag; 138 int pin = pa->pa_intrpin; 139 int bus, dev, func, start; 140 141 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 142 143 if (dev < 3 && pin != PCI_INTERRUPT_PIN_A) 144 panic("SCSI0 and SCSI1 must be hardwired!"); 145 146 switch (pin) { 147 case PCI_INTERRUPT_PIN_NONE: 148 return -1; 149 150 case PCI_INTERRUPT_PIN_A: 151 /* 152 * Each of SCSI{0,1}, & slots 0 - 2 has dedicated interrupt 153 * for pin A? 154 */ 155 *ihp = dev + 7; 156 return 0; 157 158 case PCI_INTERRUPT_PIN_B: 159 start = 0; 160 break; 161 case PCI_INTERRUPT_PIN_C: 162 start = 1; 163 break; 164 case PCI_INTERRUPT_PIN_D: 165 start = 2; 166 break; 167 } 168 169 /* Pins B,C,D are mapped to PCI_SHARED0 - PCI_SHARED2 interrupts */ 170 *ihp = 13 /* PCI_SHARED0 */ + (start + dev - 3) % 3; 171 return 0; 172 } 173 174 const char * 175 pci_intr_string(pc, ih) 176 pci_chipset_tag_t pc; 177 pci_intr_handle_t ih; 178 { 179 static char irqstr[32]; 180 181 sprintf(irqstr, "crime interrupt %d", ih); 182 return irqstr; 183 } 184 185 const struct evcnt * 186 pci_intr_evcnt(pc, ih) 187 pci_chipset_tag_t pc; 188 pci_intr_handle_t ih; 189 { 190 191 /* XXX for now, no evcnt parent reported */ 192 return NULL; 193 } 194 195 extern void * crime_intr_establish(int, int, int, int (*)(void *), void *); 196 197 void * 198 pci_intr_establish(pc, ih, level, func, arg) 199 pci_chipset_tag_t pc; 200 pci_intr_handle_t ih; 201 int level, (*func)(void *); 202 void *arg; 203 { 204 return crime_intr_establish(ih, 0, 0, func, arg); 205 } 206 207 void 208 pci_intr_disestablish(pc, cookie) 209 pci_chipset_tag_t pc; 210 void *cookie; 211 { 212 panic("pci_intr_disestablish: not implemented"); 213 214 return; 215 } 216
Indexes created Wed Sep 24 15:09:51 GMT 2025