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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/note.h> 29 #include <sys/sysmacros.h> 30 #include <sys/types.h> 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kmem.h> 34 #include <sys/cmn_err.h> 35 #include <sys/debug.h> 36 #include <sys/avintr.h> 37 #include <sys/autoconf.h> 38 #include <sys/sunndi.h> 39 #include <sys/ndi_impldefs.h> /* include prototypes */ 40 41 /* 42 * New DDI interrupt framework 43 */ 44 void 45 i_ddi_intr_devi_init(dev_info_t *dip) 46 { 47 int supported_types; 48 49 DDI_INTR_APIDBG((CE_CONT, "i_ddi_intr_devi_init: dip %p\n", 50 (void *)dip)); 51 52 if (DEVI(dip)->devi_intr_p) 53 return; 54 55 DEVI(dip)->devi_intr_p = kmem_zalloc(sizeof (devinfo_intr_t), 56 KM_SLEEP); 57 58 supported_types = i_ddi_intr_get_supported_types(dip); 59 60 /* Save supported interrupt types information */ 61 i_ddi_intr_set_supported_types(dip, supported_types); 62 } 63 64 void 65 i_ddi_intr_devi_fini(dev_info_t *dip) 66 { 67 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 68 69 DDI_INTR_APIDBG((CE_CONT, "i_ddi_intr_devi_fini: dip %p\n", 70 (void *)dip)); 71 72 if (DEVI(dip)->devi_intr_p == NULL) 73 return; 74 75 /* 76 * devi_intr_handle_p will only be used for devices 77 * which are using the legacy DDI Interrupt interfaces. 78 */ 79 if (intr_p->devi_intr_handle_p) { 80 /* nintrs could be zero; so check for it first */ 81 if (intr_p->devi_intr_sup_nintrs) { 82 kmem_free(intr_p->devi_intr_handle_p, 83 intr_p->devi_intr_sup_nintrs * 84 sizeof (ddi_intr_handle_t)); 85 } 86 } 87 88 kmem_free(DEVI(dip)->devi_intr_p, sizeof (devinfo_intr_t)); 89 DEVI(dip)->devi_intr_p = NULL; 90 } 91 92 uint_t 93 i_ddi_intr_get_supported_types(dev_info_t *dip) 94 { 95 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 96 ddi_intr_handle_impl_t hdl; 97 int ret, intr_types; 98 99 if ((intr_p) && (intr_p->devi_intr_sup_types)) 100 return (intr_p->devi_intr_sup_types); 101 102 bzero(&hdl, sizeof (ddi_intr_handle_impl_t)); 103 hdl.ih_dip = dip; 104 105 ret = i_ddi_intr_ops(dip, dip, DDI_INTROP_SUPPORTED_TYPES, &hdl, 106 (void *)&intr_types); 107 108 return ((ret == DDI_SUCCESS) ? intr_types : 0); 109 } 110 111 /* 112 * NOTE: This function is only called by i_ddi_dev_init(). 113 */ 114 void 115 i_ddi_intr_set_supported_types(dev_info_t *dip, int intr_types) 116 { 117 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 118 119 if (intr_p) 120 intr_p->devi_intr_sup_types = intr_types; 121 } 122 123 uint_t 124 i_ddi_intr_get_supported_nintrs(dev_info_t *dip, int intr_type) 125 { 126 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 127 ddi_intr_handle_impl_t hdl; 128 int ret, nintrs; 129 130 if ((intr_p) && (intr_p->devi_intr_curr_type == intr_type) && 131 (intr_p->devi_intr_sup_nintrs)) 132 return (intr_p->devi_intr_sup_nintrs); 133 134 bzero(&hdl, sizeof (ddi_intr_handle_impl_t)); 135 hdl.ih_dip = dip; 136 hdl.ih_type = intr_type; 137 138 ret = i_ddi_intr_ops(dip, dip, DDI_INTROP_NINTRS, &hdl, 139 (void *)&nintrs); 140 141 return ((ret == DDI_SUCCESS) ? nintrs : 0); 142 } 143 144 /* 145 * NOTE: This function is only called by ddi_intr_alloc(). 146 */ 147 void 148 i_ddi_intr_set_supported_nintrs(dev_info_t *dip, int nintrs) 149 { 150 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 151 152 if (intr_p) 153 intr_p->devi_intr_sup_nintrs = nintrs; 154 } 155 156 uint_t 157 i_ddi_intr_get_current_type(dev_info_t *dip) 158 { 159 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 160 161 return (intr_p ? intr_p->devi_intr_curr_type : 0); 162 } 163 164 /* 165 * NOTE: This function is only called by 166 * ddi_intr_alloc() and ddi_intr_free(). 167 */ 168 void 169 i_ddi_intr_set_current_type(dev_info_t *dip, int intr_type) 170 { 171 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 172 173 if (intr_p) 174 intr_p->devi_intr_curr_type = intr_type; 175 } 176 177 uint_t 178 i_ddi_intr_get_current_nintrs(dev_info_t *dip) 179 { 180 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 181 182 return (intr_p ? intr_p->devi_intr_curr_nintrs : 0); 183 } 184 185 /* 186 * NOTE: This function is only called by 187 * ddi_intr_alloc() and ddi_intr_free(). 188 */ 189 void 190 i_ddi_intr_set_current_nintrs(dev_info_t *dip, int nintrs) 191 { 192 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 193 194 if (intr_p) 195 intr_p->devi_intr_curr_nintrs = nintrs; 196 } 197 198 ddi_intr_msix_t * 199 i_ddi_get_msix(dev_info_t *dip) 200 { 201 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 202 203 return (intr_p ? intr_p->devi_msix_p : NULL); 204 } 205 206 void 207 i_ddi_set_msix(dev_info_t *dip, ddi_intr_msix_t *msix_p) 208 { 209 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 210 211 if (intr_p) 212 intr_p->devi_msix_p = msix_p; 213 } 214 215 ddi_intr_handle_t * 216 i_ddi_get_intr_handle(dev_info_t *dip, int inum) 217 { 218 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 219 220 if (intr_p == NULL) 221 return (NULL); 222 223 /* 224 * Changed this to a check and return NULL if an invalid inum 225 * is passed to retrieve a handle 226 */ 227 if ((inum < 0) || (inum >= intr_p->devi_intr_sup_nintrs)) 228 return (NULL); 229 230 return ((intr_p->devi_intr_handle_p) ? 231 intr_p->devi_intr_handle_p[inum] : NULL); 232 } 233 234 void 235 i_ddi_set_intr_handle(dev_info_t *dip, int inum, 236 ddi_intr_handle_t *intr_hdlp) 237 { 238 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 239 240 if (intr_p == NULL) 241 return; 242 243 /* 244 * Changed this to a check and return if an invalid inum 245 * is passed to set a handle 246 */ 247 if ((inum < 0) || (inum >= intr_p->devi_intr_sup_nintrs)) 248 return; 249 250 if (intr_hdlp && (intr_p->devi_intr_handle_p == NULL)) { 251 /* nintrs could be zero; so check for it first */ 252 if (intr_p->devi_intr_sup_nintrs) 253 intr_p->devi_intr_handle_p = kmem_zalloc( 254 sizeof (ddi_intr_handle_t) * 255 intr_p->devi_intr_sup_nintrs, KM_SLEEP); 256 } 257 258 if (intr_p->devi_intr_handle_p) 259 intr_p->devi_intr_handle_p[inum] = intr_hdlp; 260 } 261 262 /* 263 * The "ddi-intr-weight" property contains the weight of each interrupt 264 * associated with a dev_info node. For devices with multiple interrupts per 265 * dev_info node, the total load of the device is "devi_intr_weight * nintr", 266 * possibly spread out over multiple CPUs. 267 * 268 * Maintaining this as a property permits possible tweaking in the product 269 * in response to customer problems via driver.conf property definitions at 270 * the driver or the instance level. This does not mean that "ddi-intr_weight" 271 * is a formal or committed interface. 272 */ 273 int32_t 274 i_ddi_get_intr_weight(dev_info_t *dip) 275 { 276 int32_t weight; 277 278 weight = ddi_prop_get_int(DDI_DEV_T_ANY, dip, 279 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "ddi-intr-weight", -1); 280 if (weight < -1) 281 weight = -1; /* undefined */ 282 return (weight); 283 } 284 285 int32_t 286 i_ddi_set_intr_weight(dev_info_t *dip, int32_t weight) 287 { 288 int32_t oweight; 289 290 oweight = i_ddi_get_intr_weight(dip); 291 if ((weight > 0) && (oweight != weight)) 292 (void) ndi_prop_update_int(DDI_DEV_T_NONE, dip, 293 "ddi-intr-weight", weight); 294 return (oweight); 295 } 296 297 /* 298 * Old DDI interrupt framework 299 * 300 * NOTE: 301 * The following 4 busops entry points are obsoleted with version 302 * 9 or greater. Use i_ddi_intr_op interface in place of these 303 * obsolete interfaces. 304 * 305 * Remove these busops entry points and all related data structures 306 * in future major/minor solaris release. 307 */ 308 309 /* ARGSUSED */ 310 ddi_intrspec_t 311 i_ddi_get_intrspec(dev_info_t *dip, dev_info_t *rdip, uint_t inumber) 312 { 313 dev_info_t *pdip = ddi_get_parent(dip); 314 315 cmn_err(CE_WARN, "Failed to process interrupt " 316 "for %s%d due to down-rev nexus driver %s%d", 317 ddi_driver_name(rdip), ddi_get_instance(rdip), 318 ddi_driver_name(pdip), ddi_get_instance(pdip)); 319 320 return (NULL); 321 } 322 323 /* ARGSUSED */ 324 int 325 i_ddi_add_intrspec(dev_info_t *dip, dev_info_t *rdip, ddi_intrspec_t intrspec, 326 ddi_iblock_cookie_t *iblock_cookiep, 327 ddi_idevice_cookie_t *idevice_cookiep, 328 uint_t (*int_handler)(caddr_t int_handler_arg), 329 caddr_t int_handler_arg, int kind) 330 { 331 dev_info_t *pdip = ddi_get_parent(dip); 332 333 cmn_err(CE_WARN, "Failed to process interrupt " 334 "for %s%d due to down-rev nexus driver %s%d", 335 ddi_driver_name(rdip), ddi_get_instance(rdip), 336 ddi_driver_name(pdip), ddi_get_instance(pdip)); 337 338 return (DDI_ENOTSUP); 339 } 340 341 /* ARGSUSED */ 342 void 343 i_ddi_remove_intrspec(dev_info_t *dip, dev_info_t *rdip, 344 ddi_intrspec_t intrspec, ddi_iblock_cookie_t iblock_cookie) 345 { 346 dev_info_t *pdip = ddi_get_parent(dip); 347 348 cmn_err(CE_WARN, "Failed to process interrupt " 349 "for %s%d due to down-rev nexus driver %s%d", 350 ddi_driver_name(rdip), ddi_get_instance(rdip), 351 ddi_driver_name(pdip), ddi_get_instance(pdip)); 352 } 353 354 /* ARGSUSED */ 355 int 356 i_ddi_intr_ctlops(dev_info_t *dip, dev_info_t *rdip, ddi_intr_ctlop_t op, 357 void *arg, void *val) 358 { 359 dev_info_t *pdip = ddi_get_parent(dip); 360 361 cmn_err(CE_WARN, "Failed to process interrupt " 362 "for %s%d due to down-rev nexus driver %s%d", 363 ddi_driver_name(rdip), ddi_get_instance(rdip), 364 ddi_driver_name(pdip), ddi_get_instance(pdip)); 365 366 return (DDI_ENOTSUP); 367 } 368 369 #if defined(__i386) || defined(__amd64) 370 ddi_acc_handle_t 371 i_ddi_get_pci_config_handle(dev_info_t *dip) 372 { 373 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 374 375 return (intr_p ? intr_p->devi_cfg_handle : NULL); 376 } 377 378 void 379 i_ddi_set_pci_config_handle(dev_info_t *dip, ddi_acc_handle_t handle) 380 { 381 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 382 383 if (intr_p) 384 intr_p->devi_cfg_handle = handle; 385 } 386 387 388 int 389 i_ddi_get_msi_msix_cap_ptr(dev_info_t *dip) 390 { 391 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 392 393 return (intr_p ? intr_p->devi_cap_ptr : 0); 394 } 395 396 void 397 i_ddi_set_msi_msix_cap_ptr(dev_info_t *dip, int cap_ptr) 398 { 399 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 400 401 if (intr_p) 402 intr_p->devi_cap_ptr = cap_ptr; 403 } 404 #endif 405