pci_machdep.c revision 1.15
1 /* $NetBSD: pci_machdep.c,v 1.15 2004/09/29 04:06:52 sekiya 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 1.15 2004/09/29 04:06:52 sekiya Exp $"); 37 38 #include <sys/types.h> 39 #include <sys/param.h> 40 #include <sys/time.h> 41 #include <sys/systm.h> 42 #include <sys/errno.h> 43 #include <sys/device.h> 44 45 #include <uvm/uvm_extern.h> 46 47 #define _SGIMIPS_BUS_DMA_PRIVATE 48 #include <machine/bus.h> 49 #include <machine/intr.h> 50 #include <machine/sysconf.h> 51 52 #include <dev/pci/pcivar.h> 53 #include <dev/pci/pcireg.h> 54 #include <dev/pci/pcidevs.h> 55 56 /* 57 * PCI doesn't have any special needs; just use 58 * the generic versions of these functions. 59 */ 60 struct sgimips_bus_dma_tag pci_bus_dma_tag = { 61 _bus_dmamap_create, 62 _bus_dmamap_destroy, 63 _bus_dmamap_load, 64 _bus_dmamap_load_mbuf, 65 _bus_dmamap_load_uio, 66 _bus_dmamap_load_raw, 67 _bus_dmamap_unload, 68 _bus_dmamap_sync_mips3, 69 _bus_dmamem_alloc, 70 _bus_dmamem_free, 71 _bus_dmamem_map, 72 _bus_dmamem_unmap, 73 _bus_dmamem_mmap, 74 }; 75 76 void 77 pci_attach_hook(struct device *parent, struct device *self, struct pcibus_attach_args *pba) 78 { 79 /* XXX */ 80 81 return; 82 } 83 84 int 85 pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 86 { 87 88 if (busno == 0) 89 return 5; /* 2 on-board SCSI chips, slots 0, 1 and 2 */ 90 else 91 return 0; /* XXX */ 92 } 93 94 pcitag_t 95 pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 96 { 97 98 return (bus << 16) | (device << 11) | (function << 8); 99 } 100 101 void 102 pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, int *fp) 103 { 104 105 if (bp != NULL) 106 *bp = (tag >> 16) & 0xff; 107 if (dp != NULL) 108 *dp = (tag >> 11) & 0x1f; 109 if (fp != NULL) 110 *fp = (tag >> 8) & 0x07; 111 } 112 113 pcireg_t 114 pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 115 { 116 117 return (*pc->pc_conf_read)(pc, tag, reg); 118 } 119 120 void 121 pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t data) 122 { 123 124 (*pc->pc_conf_write)(pc, tag, reg, data); 125 } 126 127 int 128 pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 129 { 130 pci_chipset_tag_t pc = pa->pa_pc; 131 pcitag_t intrtag = pa->pa_intrtag; 132 int pin = pa->pa_intrpin; 133 int bus, dev, func, start; 134 135 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 136 137 if (dev < 3 && pin != PCI_INTERRUPT_PIN_A) 138 panic("SCSI0 and SCSI1 must be hardwired!"); 139 140 switch (pin) { 141 default: 142 case PCI_INTERRUPT_PIN_NONE: 143 return -1; 144 145 case PCI_INTERRUPT_PIN_A: 146 /* 147 * Each of SCSI{0,1}, & slots 0 - 2 has dedicated interrupt 148 * for pin A? 149 */ 150 *ihp = dev + 7; 151 return 0; 152 153 case PCI_INTERRUPT_PIN_B: 154 start = 0; 155 break; 156 case PCI_INTERRUPT_PIN_C: 157 start = 1; 158 break; 159 case PCI_INTERRUPT_PIN_D: 160 start = 2; 161 break; 162 } 163 164 /* Pins B,C,D are mapped to PCI_SHARED0 - PCI_SHARED2 interrupts */ 165 *ihp = 13 /* PCI_SHARED0 */ + (start + dev - 3) % 3; 166 return 0; 167 } 168 169 const char * 170 pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 171 { 172 static char irqstr[32]; 173 174 sprintf(irqstr, "crime interrupt %d", ih); 175 return irqstr; 176 } 177 178 const struct evcnt * 179 pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 180 { 181 182 /* XXX for now, no evcnt parent reported */ 183 return NULL; 184 } 185 186 void * 187 pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, 188 int (*func)(void *), void *arg) 189 { 190 191 return (void *)(pc->intr_establish)(ih, 0, func, arg); 192 } 193 194 void 195 pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 196 { 197 198 (pc->intr_disestablish)(cookie); 199 } 200
Indexes created Fri Sep 26 20:09:58 GMT 2025