pci_machdep.c revision 1.17
1 /* $NetBSD: pci_machdep.c,v 1.17 2006/04/17 14:01:08 tsutsui 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/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.17 2006/04/17 14:01:08 tsutsui Exp $"); 37 38 #include "opt_pci.h" 39 #include "pci.h" 40 41 #include <sys/types.h> 42 #include <sys/param.h> 43 #include <sys/time.h> 44 #include <sys/systm.h> 45 #include <sys/errno.h> 46 #include <sys/device.h> 47 48 #include <uvm/uvm_extern.h> 49 50 #define _SGIMIPS_BUS_DMA_PRIVATE 51 #include <machine/bus.h> 52 #include <machine/intr.h> 53 #include <machine/sysconf.h> 54 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/pcireg.h> 57 #include <dev/pci/pcidevs.h> 58 59 /* 60 * PCI doesn't have any special needs; just use 61 * the generic versions of these functions. 62 */ 63 struct sgimips_bus_dma_tag pci_bus_dma_tag = { 64 _bus_dmamap_create, 65 _bus_dmamap_destroy, 66 _bus_dmamap_load, 67 _bus_dmamap_load_mbuf, 68 _bus_dmamap_load_uio, 69 _bus_dmamap_load_raw, 70 _bus_dmamap_unload, 71 _bus_dmamap_sync_mips3, 72 _bus_dmamem_alloc, 73 _bus_dmamem_free, 74 _bus_dmamem_map, 75 _bus_dmamem_unmap, 76 _bus_dmamem_mmap, 77 }; 78 79 void 80 pci_attach_hook(struct device *parent, struct device *self, struct pcibus_attach_args *pba) 81 { 82 /* XXX */ 83 84 return; 85 } 86 87 int 88 pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 89 { 90 91 if (busno == 0) 92 return 5; /* 2 on-board SCSI chips, slots 0, 1 and 2 */ 93 else 94 return 32; /* XXX */ 95 } 96 97 pcitag_t 98 pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 99 { 100 101 return (bus << 16) | (device << 11) | (function << 8); 102 } 103 104 void 105 pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, int *fp) 106 { 107 108 if (bp != NULL) 109 *bp = (tag >> 16) & 0xff; 110 if (dp != NULL) 111 *dp = (tag >> 11) & 0x1f; 112 if (fp != NULL) 113 *fp = (tag >> 8) & 0x07; 114 } 115 116 pcireg_t 117 pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 118 { 119 120 return (*pc->pc_conf_read)(pc, tag, reg); 121 } 122 123 void 124 pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t data) 125 { 126 127 (*pc->pc_conf_write)(pc, tag, reg, data); 128 } 129 130 int 131 pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 132 { 133 pci_chipset_tag_t pc = pa->pa_pc; 134 pcitag_t intrtag = pa->pa_intrtag; 135 int pin = pa->pa_intrpin; 136 int bus, dev, func, start; 137 138 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 139 140 if (dev < 3 && pin != PCI_INTERRUPT_PIN_A) 141 panic("SCSI0 and SCSI1 must be hardwired!"); 142 143 switch (pin) { 144 default: 145 case PCI_INTERRUPT_PIN_NONE: 146 return -1; 147 148 case PCI_INTERRUPT_PIN_A: 149 /* 150 * Each of SCSI{0,1}, & slots 0 - 2 has dedicated interrupt 151 * for pin A? 152 */ 153 *ihp = dev + 7; 154 return 0; 155 156 case PCI_INTERRUPT_PIN_B: 157 start = 0; 158 break; 159 case PCI_INTERRUPT_PIN_C: 160 start = 1; 161 break; 162 case PCI_INTERRUPT_PIN_D: 163 start = 2; 164 break; 165 } 166 167 /* Pins B,C,D are mapped to PCI_SHARED0 - PCI_SHARED2 interrupts */ 168 *ihp = 13 /* PCI_SHARED0 */ + (start + dev - 3) % 3; 169 return 0; 170 } 171 172 const char * 173 pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 174 { 175 static char irqstr[32]; 176 177 sprintf(irqstr, "crime interrupt %d", ih); 178 return irqstr; 179 } 180 181 const struct evcnt * 182 pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 183 { 184 185 /* XXX for now, no evcnt parent reported */ 186 return NULL; 187 } 188 189 void * 190 pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, 191 int (*func)(void *), void *arg) 192 { 193 194 return (void *)(pc->intr_establish)(ih, 0, func, arg); 195 } 196 197 void 198 pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 199 { 200 201 (pc->intr_disestablish)(cookie); 202 } 203 204 #ifdef PCI_NETBSD_CONFIGURE 205 void 206 pci_conf_interrupt(pci_chipset_tag_t pc, int bus, int dev, int pin, int swiz, 207 int *iline) 208 { 209 210 return; 211 } 212 #endif 213
Indexes created Fri Sep 26 20:09:58 GMT 2025