1 /* $NetBSD: pci_machdep.c,v 1.16 2004/08/28 13:33:31 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Soren S. Jorvang. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions, and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.16 2004/08/28 13:33:31 tsutsui Exp $"); 30 31 #include <sys/types.h> 32 #include <sys/param.h> 33 #include <sys/time.h> 34 #include <sys/systm.h> 35 #include <sys/errno.h> 36 #include <sys/device.h> 37 38 #define _COBALT_BUS_DMA_PRIVATE 39 #include <machine/bus.h> 40 #include <machine/intr.h> 41 42 #include <dev/pci/pcivar.h> 43 #include <dev/pci/pcireg.h> 44 #include <dev/pci/pcidevs.h> 45 46 #include <cobalt/dev/gtreg.h> 47 48 /* 49 * PCI doesn't have any special needs; just use 50 * the generic versions of these functions. 51 */ 52 struct cobalt_bus_dma_tag pci_bus_dma_tag = { 53 _bus_dmamap_create, 54 _bus_dmamap_destroy, 55 _bus_dmamap_load, 56 _bus_dmamap_load_mbuf, 57 _bus_dmamap_load_uio, 58 _bus_dmamap_load_raw, 59 _bus_dmamap_unload, 60 _bus_dmamap_sync, 61 _bus_dmamem_alloc, 62 _bus_dmamem_free, 63 _bus_dmamem_map, 64 _bus_dmamem_unmap, 65 _bus_dmamem_mmap, 66 }; 67 68 void 69 pci_attach_hook(parent, self, pba) 70 struct device *parent, *self; 71 struct pcibus_attach_args *pba; 72 { 73 /* XXX */ 74 75 return; 76 } 77 78 int 79 pci_bus_maxdevs(pc, busno) 80 pci_chipset_tag_t pc; 81 int busno; 82 { 83 return 32; 84 } 85 86 pcitag_t 87 pci_make_tag(pc, bus, device, function) 88 pci_chipset_tag_t pc; 89 int bus, device, function; 90 { 91 return (bus << 16) | (device << 11) | (function << 8); 92 } 93 94 void 95 pci_decompose_tag(pc, tag, bp, dp, fp) 96 pci_chipset_tag_t pc; 97 pcitag_t tag; 98 int *bp, *dp, *fp; 99 { 100 if (bp != NULL) 101 *bp = (tag >> 16) & 0xff; 102 if (dp != NULL) 103 *dp = (tag >> 11) & 0x1f; 104 if (fp != NULL) 105 *fp = (tag >> 8) & 0x07; 106 } 107 108 pcireg_t 109 pci_conf_read(pc, tag, reg) 110 pci_chipset_tag_t pc; 111 pcitag_t tag; 112 int reg; 113 { 114 pcireg_t data; 115 int bus, dev, func; 116 117 pci_decompose_tag(pc, tag, &bus, &dev, &func); 118 119 /* 120 * 2700 hardware wedges on accesses to device 6. 121 */ 122 if (bus == 0 && dev == 6) 123 return 0; 124 /* 125 * 2800 hardware wedges on accesses to device 31. 126 */ 127 if (bus == 0 && dev == 31) 128 return 0; 129 130 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_ADDR, 131 0x80000000 | tag | reg); 132 data = bus_space_read_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_DATA); 133 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_ADDR, 0); 134 135 return data; 136 } 137 138 void 139 pci_conf_write(pc, tag, reg, data) 140 pci_chipset_tag_t pc; 141 pcitag_t tag; 142 int reg; 143 pcireg_t data; 144 { 145 146 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_ADDR, 147 0x80000000 | tag | reg); 148 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_DATA, data); 149 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_ADDR, 0); 150 } 151 152 int 153 pci_intr_map(pa, ihp) 154 struct pci_attach_args *pa; 155 pci_intr_handle_t *ihp; 156 { 157 pci_chipset_tag_t pc = pa->pa_pc; 158 pcitag_t intrtag = pa->pa_intrtag; 159 int pin = pa->pa_intrpin; 160 int line = pa->pa_intrline; 161 int bus, dev, func; 162 163 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 164 165 /* 166 * The interrupt lines of the two Tulips are connected 167 * directly to the CPU. 168 */ 169 170 if (bus == 0 && dev == 7 && pin == PCI_INTERRUPT_PIN_A) 171 *ihp = 16 + 1; 172 else if (bus == 0 && dev == 12 && pin == PCI_INTERRUPT_PIN_A) 173 *ihp = 16 + 2; 174 else 175 *ihp = line; 176 177 return 0; 178 } 179 180 const char * 181 pci_intr_string(pc, ih) 182 pci_chipset_tag_t pc; 183 pci_intr_handle_t ih; 184 { 185 static char irqstr[8]; 186 187 if (ih >= 16) 188 sprintf(irqstr, "level %d", ih - 16); 189 else 190 sprintf(irqstr, "irq %d", ih); 191 192 return irqstr; 193 } 194 195 const struct evcnt * 196 pci_intr_evcnt(pc, ih) 197 pci_chipset_tag_t pc; 198 pci_intr_handle_t ih; 199 { 200 201 /* XXX for now, no evcnt parent reported */ 202 return NULL; 203 } 204 205 void * 206 pci_intr_establish(pc, ih, level, func, arg) 207 pci_chipset_tag_t pc; 208 pci_intr_handle_t ih; 209 int level, (*func)(void *); 210 void *arg; 211 { 212 if (ih >= 16) 213 return cpu_intr_establish(ih - 16, level, func, arg); 214 else 215 return icu_intr_establish(ih, IST_LEVEL, level, func, arg); 216 } 217 218 void 219 pci_intr_disestablish(pc, cookie) 220 pci_chipset_tag_t pc; 221 void *cookie; 222 { 223 /* Try both, only the valid one will disestablish. */ 224 cpu_intr_disestablish(cookie); 225 icu_intr_disestablish(cookie); 226 } 227