1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <sys/debug.h> 28 #include <sys/types.h> 29 #include <sys/param.h> 30 #include <sys/time.h> 31 #include <sys/buf.h> 32 #include <sys/errno.h> 33 #include <sys/systm.h> 34 #include <sys/conf.h> 35 #include <sys/signal.h> 36 #include <sys/file.h> 37 #include <sys/uio.h> 38 #include <sys/ioctl.h> 39 #include <sys/map.h> 40 #include <sys/proc.h> 41 #include <sys/user.h> 42 #include <sys/mman.h> 43 #include <sys/cred.h> 44 #include <sys/open.h> 45 #include <sys/stat.h> 46 #include <sys/utsname.h> 47 #include <sys/kmem.h> 48 #include <sys/cmn_err.h> 49 #include <sys/vnode.h> 50 #include <vm/page.h> 51 #include <vm/as.h> 52 #include <vm/hat.h> 53 #include <vm/seg.h> 54 #include <sys/ddi.h> 55 #include <sys/devops.h> 56 #include <sys/sunddi.h> 57 #include <sys/ddi_impldefs.h> 58 #include <sys/fs/snode.h> 59 #include <sys/pci.h> 60 #include <sys/modctl.h> 61 #include <sys/uio.h> 62 #include <sys/visual_io.h> 63 #include <sys/fbio.h> 64 #include <sys/ddidmareq.h> 65 #include <sys/kstat.h> 66 #include <sys/callb.h> 67 #include <sys/pci_cfgspace.h> 68 #include <sys/gfx_private.h> 69 70 typedef struct gfxp_pci_bsf { 71 uint16_t vendor; 72 uint16_t device; 73 uint8_t bus; 74 uint8_t slot; 75 uint8_t function; 76 uint8_t found; 77 dev_info_t *dip; 78 } gfxp_pci_bsf_t; 79 80 /* The use of pci_get?/put?_func() depends on misc/pci_autoconfig */ 81 82 static int 83 gfxp_pci_get_bsf(dev_info_t *dip, uint8_t *bus, uint8_t *dev, uint8_t *func) 84 { 85 pci_regspec_t *pci_rp; 86 uint32_t length; 87 int rc; 88 89 /* get "reg" property */ 90 rc = ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, 91 DDI_PROP_DONTPASS, "reg", (int **)&pci_rp, 92 (uint_t *)&length); 93 if ((rc != DDI_SUCCESS) || (length < 94 (sizeof (pci_regspec_t) / sizeof (int)))) { 95 return (DDI_FAILURE); 96 } 97 98 *bus = PCI_REG_BUS_G(pci_rp->pci_phys_hi); 99 *dev = PCI_REG_DEV_G(pci_rp->pci_phys_hi); 100 *func = PCI_REG_FUNC_G(pci_rp->pci_phys_hi); 101 102 /* 103 * free the memory allocated by ddi_prop_lookup_int_array(). 104 */ 105 ddi_prop_free(pci_rp); 106 107 return (DDI_SUCCESS); 108 } 109 110 static int 111 gfxp_pci_find_bsf(dev_info_t *dip, void *arg) 112 { 113 int rc; 114 uint8_t bus, dev, func; 115 gfxp_pci_bsf_t *pci_bsf; 116 int vendor_id, device_id, class_code; 117 118 /* 119 * Look for vendor-id, device-id, class-code to verify 120 * this is some type of PCI child node. 121 */ 122 vendor_id = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 123 "vendor-id", -1); 124 device_id = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 125 "device-id", -1); 126 class_code = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 127 "class-code", -1); 128 if ((vendor_id == -1) || (device_id == -1) || (class_code == -1)) { 129 return (DDI_WALK_CONTINUE); 130 } 131 132 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS) 133 return (DDI_WALK_TERMINATE); 134 135 pci_bsf = (gfxp_pci_bsf_t *)arg; 136 137 if ((bus == pci_bsf->bus) && (dev == pci_bsf->slot) && 138 (func == pci_bsf->function)) { 139 pci_bsf->dip = dip; 140 pci_bsf->vendor = vendor_id; 141 pci_bsf->device = device_id; 142 pci_bsf->found = 1; 143 rc = DDI_WALK_TERMINATE; 144 } else { 145 rc = DDI_WALK_CONTINUE; 146 } 147 148 return (rc); 149 } 150 151 gfxp_acc_handle_t 152 gfxp_pci_init_handle(uint8_t bus, uint8_t slot, uint8_t function, 153 uint16_t *vendor, uint16_t *device) 154 { 155 dev_info_t *dip; 156 gfxp_pci_bsf_t *pci_bsf; 157 158 /* 159 * Find a PCI device based on its address, and return a unique handle 160 * to be used in subsequent calls to read from or write to the config 161 * space of this device. 162 */ 163 164 if ((pci_bsf = kmem_zalloc(sizeof (gfxp_pci_bsf_t), KM_SLEEP)) 165 == NULL) { 166 return (NULL); 167 } 168 169 pci_bsf->bus = bus; 170 pci_bsf->slot = slot; 171 pci_bsf->function = function; 172 173 ddi_walk_devs(ddi_root_node(), gfxp_pci_find_bsf, pci_bsf); 174 175 if (pci_bsf->found) { 176 dip = pci_bsf->dip; 177 178 if (vendor) *vendor = pci_bsf->vendor; 179 if (device) *device = pci_bsf->device; 180 } else { 181 dip = NULL; 182 if (vendor) *vendor = 0x0000; 183 if (device) *device = 0x0000; 184 } 185 186 kmem_free(pci_bsf, sizeof (gfxp_pci_bsf_t)); 187 188 return ((gfxp_acc_handle_t)dip); 189 } 190 191 uint8_t 192 gfxp_pci_read_byte(gfxp_acc_handle_t handle, uint16_t offset) 193 { 194 dev_info_t *dip = (dev_info_t *)handle; 195 uint8_t val; 196 uint8_t bus, dev, func; 197 198 if (dip == NULL) 199 return ((uint8_t)~0); 200 201 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS) 202 return ((uint8_t)~0); 203 204 val = (*pci_getb_func)(bus, dev, func, offset); 205 return (val); 206 } 207 208 uint16_t 209 gfxp_pci_read_word(gfxp_acc_handle_t handle, uint16_t offset) 210 { 211 dev_info_t *dip = (dev_info_t *)handle; 212 uint16_t val; 213 uint8_t bus, dev, func; 214 215 if (dip == NULL) 216 return ((uint16_t)~0); 217 218 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS) 219 return ((uint16_t)~0); 220 221 val = (*pci_getw_func)(bus, dev, func, offset); 222 return (val); 223 } 224 225 uint32_t 226 gfxp_pci_read_dword(gfxp_acc_handle_t handle, uint16_t offset) 227 { 228 dev_info_t *dip = (dev_info_t *)handle; 229 uint32_t val; 230 uint8_t bus, dev, func; 231 232 if (dip == NULL) 233 return ((uint32_t)~0); 234 235 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS) 236 return ((uint32_t)~0); 237 238 val = (*pci_getl_func)(bus, dev, func, offset); 239 return (val); 240 } 241 242 void 243 gfxp_pci_write_byte(gfxp_acc_handle_t handle, uint16_t offset, uint8_t value) 244 { 245 dev_info_t *dip = (dev_info_t *)handle; 246 uint8_t bus, dev, func; 247 248 if (dip == NULL) 249 return; 250 251 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS) 252 return; 253 254 (*pci_putb_func)(bus, dev, func, offset, value); 255 } 256 257 void 258 gfxp_pci_write_word(gfxp_acc_handle_t handle, uint16_t offset, uint16_t value) 259 { 260 dev_info_t *dip = (dev_info_t *)handle; 261 uint8_t bus, dev, func; 262 263 if (dip == NULL) 264 return; 265 266 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS) 267 return; 268 269 (*pci_putw_func)(bus, dev, func, offset, value); 270 } 271 272 void 273 gfxp_pci_write_dword(gfxp_acc_handle_t handle, uint16_t offset, uint32_t value) 274 { 275 dev_info_t *dip = (dev_info_t *)handle; 276 uint8_t bus, dev, func; 277 278 if (dip == NULL) 279 return; 280 281 if (gfxp_pci_get_bsf(dip, &bus, &dev, &func) != DDI_SUCCESS) 282 return; 283 284 (*pci_putl_func)(bus, dev, func, offset, value); 285 } 286 287 static int 288 gfxp_pci_find_vd(dev_info_t *dip, void *arg) 289 { 290 int rc; 291 gfxp_pci_bsf_t *pci_bsf; 292 int vendor_id, device_id, class_code; 293 294 /* 295 * Look for vendor-id, device-id, class-code to verify 296 * this is some type of PCI child node. 297 */ 298 vendor_id = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 299 "vendor-id", -1); 300 device_id = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 301 "device-id", -1); 302 class_code = ddi_prop_get_int(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, 303 "class-code", -1); 304 if ((vendor_id == -1) || (device_id == -1) || (class_code == -1)) { 305 return (DDI_WALK_CONTINUE); 306 } 307 308 pci_bsf = (gfxp_pci_bsf_t *)arg; 309 310 if ((vendor_id == pci_bsf->vendor) && (device_id == pci_bsf->device)) { 311 pci_bsf->found = 1; 312 rc = DDI_WALK_TERMINATE; 313 } else { 314 rc = DDI_WALK_CONTINUE; 315 } 316 317 return (rc); 318 } 319 320 int 321 gfxp_pci_device_present(uint16_t vendor, uint16_t device) 322 { 323 gfxp_pci_bsf_t *pci_bsf; 324 int rv; 325 326 /* 327 * Find a PCI device based on its device and vendor id. 328 */ 329 330 if ((pci_bsf = kmem_zalloc(sizeof (gfxp_pci_bsf_t), KM_SLEEP)) == NULL) 331 return (0); 332 333 pci_bsf->vendor = vendor; 334 pci_bsf->device = device; 335 ddi_walk_devs(ddi_root_node(), gfxp_pci_find_vd, pci_bsf); 336 337 if (pci_bsf->found) { 338 rv = 1; 339 } else { 340 rv = 0; 341 } 342 343 kmem_free(pci_bsf, sizeof (gfxp_pci_bsf_t)); 344 345 return (rv); 346 } 347