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 2007 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 extern uint_t ddi_msix_alloc_limit; 42 43 /* 44 * New DDI interrupt framework 45 */ 46 void 47 i_ddi_intr_devi_init(dev_info_t *dip) 48 { 49 int supported_types; 50 51 DDI_INTR_APIDBG((CE_CONT, "i_ddi_intr_devi_init: dip %p\n", 52 (void *)dip)); 53 54 if (DEVI(dip)->devi_intr_p) 55 return; 56 57 DEVI(dip)->devi_intr_p = kmem_zalloc(sizeof (devinfo_intr_t), 58 KM_SLEEP); 59 60 supported_types = i_ddi_intr_get_supported_types(dip); 61 62 /* Save supported interrupt types information */ 63 i_ddi_intr_set_supported_types(dip, supported_types); 64 } 65 66 void 67 i_ddi_intr_devi_fini(dev_info_t *dip) 68 { 69 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 70 71 DDI_INTR_APIDBG((CE_CONT, "i_ddi_intr_devi_fini: dip %p\n", 72 (void *)dip)); 73 74 if ((DEVI(dip)->devi_intr_p == NULL) || 75 i_ddi_intr_get_current_nintrs(dip)) 76 return; 77 78 /* 79 * devi_intr_handle_p will only be used for devices 80 * which are using the legacy DDI Interrupt interfaces. 81 */ 82 if (intr_p->devi_intr_handle_p) { 83 /* nintrs could be zero; so check for it first */ 84 if (intr_p->devi_intr_sup_nintrs) { 85 kmem_free(intr_p->devi_intr_handle_p, 86 intr_p->devi_intr_sup_nintrs * 87 sizeof (ddi_intr_handle_t)); 88 } 89 } 90 91 kmem_free(DEVI(dip)->devi_intr_p, sizeof (devinfo_intr_t)); 92 DEVI(dip)->devi_intr_p = NULL; 93 } 94 95 uint_t 96 i_ddi_intr_get_supported_types(dev_info_t *dip) 97 { 98 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 99 ddi_intr_handle_impl_t hdl; 100 int ret, intr_types; 101 102 if ((intr_p) && (intr_p->devi_intr_sup_types)) 103 return (intr_p->devi_intr_sup_types); 104 105 bzero(&hdl, sizeof (ddi_intr_handle_impl_t)); 106 hdl.ih_dip = dip; 107 108 ret = i_ddi_intr_ops(dip, dip, DDI_INTROP_SUPPORTED_TYPES, &hdl, 109 (void *)&intr_types); 110 111 return ((ret == DDI_SUCCESS) ? intr_types : 0); 112 } 113 114 /* 115 * NOTE: This function is only called by i_ddi_dev_init(). 116 */ 117 void 118 i_ddi_intr_set_supported_types(dev_info_t *dip, int intr_types) 119 { 120 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 121 122 if (intr_p) 123 intr_p->devi_intr_sup_types = intr_types; 124 } 125 126 uint_t 127 i_ddi_intr_get_supported_nintrs(dev_info_t *dip, int intr_type) 128 { 129 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 130 ddi_intr_handle_impl_t hdl; 131 int ret, nintrs; 132 133 if ((intr_p) && (intr_p->devi_intr_curr_type == intr_type) && 134 (intr_p->devi_intr_sup_nintrs)) 135 return (intr_p->devi_intr_sup_nintrs); 136 137 bzero(&hdl, sizeof (ddi_intr_handle_impl_t)); 138 hdl.ih_dip = dip; 139 hdl.ih_type = intr_type; 140 141 ret = i_ddi_intr_ops(dip, dip, DDI_INTROP_NINTRS, &hdl, 142 (void *)&nintrs); 143 144 return ((ret == DDI_SUCCESS) ? nintrs : 0); 145 } 146 147 /* 148 * NOTE: This function is only called by ddi_intr_alloc(). 149 */ 150 void 151 i_ddi_intr_set_supported_nintrs(dev_info_t *dip, int nintrs) 152 { 153 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 154 155 if (intr_p) 156 intr_p->devi_intr_sup_nintrs = nintrs; 157 } 158 159 uint_t 160 i_ddi_intr_get_current_type(dev_info_t *dip) 161 { 162 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 163 164 return (intr_p ? intr_p->devi_intr_curr_type : 0); 165 } 166 167 /* 168 * NOTE: This function is only called by 169 * ddi_intr_alloc() and ddi_intr_free(). 170 */ 171 void 172 i_ddi_intr_set_current_type(dev_info_t *dip, int intr_type) 173 { 174 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 175 176 if (intr_p) 177 intr_p->devi_intr_curr_type = intr_type; 178 } 179 180 uint_t 181 i_ddi_intr_get_current_nintrs(dev_info_t *dip) 182 { 183 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 184 185 return (intr_p ? intr_p->devi_intr_curr_nintrs : 0); 186 } 187 188 /* 189 * NOTE: This function is only called by 190 * ddi_intr_alloc() and ddi_intr_free(). 191 */ 192 void 193 i_ddi_intr_set_current_nintrs(dev_info_t *dip, int nintrs) 194 { 195 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 196 197 if (intr_p) 198 intr_p->devi_intr_curr_nintrs = nintrs; 199 } 200 201 ddi_intr_msix_t * 202 i_ddi_get_msix(dev_info_t *dip) 203 { 204 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 205 206 return (intr_p ? intr_p->devi_msix_p : NULL); 207 } 208 209 void 210 i_ddi_set_msix(dev_info_t *dip, ddi_intr_msix_t *msix_p) 211 { 212 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 213 214 if (intr_p) 215 intr_p->devi_msix_p = msix_p; 216 } 217 218 ddi_intr_handle_t * 219 i_ddi_get_intr_handle(dev_info_t *dip, int inum) 220 { 221 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 222 223 if (intr_p == NULL) 224 return (NULL); 225 226 /* 227 * Changed this to a check and return NULL if an invalid inum 228 * is passed to retrieve a handle 229 */ 230 if ((inum < 0) || (inum >= intr_p->devi_intr_sup_nintrs)) 231 return (NULL); 232 233 return ((intr_p->devi_intr_handle_p) ? 234 intr_p->devi_intr_handle_p[inum] : NULL); 235 } 236 237 void 238 i_ddi_set_intr_handle(dev_info_t *dip, int inum, 239 ddi_intr_handle_t *intr_hdlp) 240 { 241 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 242 243 if (intr_p == NULL) 244 return; 245 246 /* 247 * Changed this to a check and return if an invalid inum 248 * is passed to set a handle 249 */ 250 if ((inum < 0) || (inum >= intr_p->devi_intr_sup_nintrs)) 251 return; 252 253 if (intr_hdlp && (intr_p->devi_intr_handle_p == NULL)) { 254 /* nintrs could be zero; so check for it first */ 255 if (intr_p->devi_intr_sup_nintrs) 256 intr_p->devi_intr_handle_p = kmem_zalloc( 257 sizeof (ddi_intr_handle_t) * 258 intr_p->devi_intr_sup_nintrs, KM_SLEEP); 259 } 260 261 if (intr_p->devi_intr_handle_p) 262 intr_p->devi_intr_handle_p[inum] = intr_hdlp; 263 } 264 265 /* 266 * The "ddi-intr-weight" property contains the weight of each interrupt 267 * associated with a dev_info node. For devices with multiple interrupts per 268 * dev_info node, the total load of the device is "devi_intr_weight * nintr", 269 * possibly spread out over multiple CPUs. 270 * 271 * Maintaining this as a property permits possible tweaking in the product 272 * in response to customer problems via driver.conf property definitions at 273 * the driver or the instance level. This does not mean that "ddi-intr_weight" 274 * is a formal or committed interface. 275 */ 276 int32_t 277 i_ddi_get_intr_weight(dev_info_t *dip) 278 { 279 int32_t weight; 280 281 weight = ddi_prop_get_int(DDI_DEV_T_ANY, dip, 282 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "ddi-intr-weight", -1); 283 if (weight < -1) 284 weight = -1; /* undefined */ 285 return (weight); 286 } 287 288 int32_t 289 i_ddi_set_intr_weight(dev_info_t *dip, int32_t weight) 290 { 291 int32_t oweight; 292 293 oweight = i_ddi_get_intr_weight(dip); 294 if ((weight > 0) && (oweight != weight)) 295 (void) ndi_prop_update_int(DDI_DEV_T_NONE, dip, 296 "ddi-intr-weight", weight); 297 return (oweight); 298 } 299 300 /* 301 * Old DDI interrupt framework 302 * 303 * NOTE: 304 * The following 4 busops entry points are obsoleted with version 305 * 9 or greater. Use i_ddi_intr_op interface in place of these 306 * obsolete interfaces. 307 * 308 * Remove these busops entry points and all related data structures 309 * in future major/minor solaris release. 310 */ 311 312 /* ARGSUSED */ 313 ddi_intrspec_t 314 i_ddi_get_intrspec(dev_info_t *dip, dev_info_t *rdip, uint_t inumber) 315 { 316 dev_info_t *pdip = ddi_get_parent(dip); 317 318 cmn_err(CE_WARN, "Failed to process interrupt " 319 "for %s%d due to down-rev nexus driver %s%d", 320 ddi_driver_name(rdip), ddi_get_instance(rdip), 321 ddi_driver_name(pdip), ddi_get_instance(pdip)); 322 323 return (NULL); 324 } 325 326 /* ARGSUSED */ 327 int 328 i_ddi_add_intrspec(dev_info_t *dip, dev_info_t *rdip, ddi_intrspec_t intrspec, 329 ddi_iblock_cookie_t *iblock_cookiep, 330 ddi_idevice_cookie_t *idevice_cookiep, 331 uint_t (*int_handler)(caddr_t int_handler_arg), 332 caddr_t int_handler_arg, int kind) 333 { 334 dev_info_t *pdip = ddi_get_parent(dip); 335 336 cmn_err(CE_WARN, "Failed to process interrupt " 337 "for %s%d due to down-rev nexus driver %s%d", 338 ddi_driver_name(rdip), ddi_get_instance(rdip), 339 ddi_driver_name(pdip), ddi_get_instance(pdip)); 340 341 return (DDI_ENOTSUP); 342 } 343 344 /* ARGSUSED */ 345 void 346 i_ddi_remove_intrspec(dev_info_t *dip, dev_info_t *rdip, 347 ddi_intrspec_t intrspec, ddi_iblock_cookie_t iblock_cookie) 348 { 349 dev_info_t *pdip = ddi_get_parent(dip); 350 351 cmn_err(CE_WARN, "Failed to process interrupt " 352 "for %s%d due to down-rev nexus driver %s%d", 353 ddi_driver_name(rdip), ddi_get_instance(rdip), 354 ddi_driver_name(pdip), ddi_get_instance(pdip)); 355 } 356 357 /* ARGSUSED */ 358 int 359 i_ddi_intr_ctlops(dev_info_t *dip, dev_info_t *rdip, ddi_intr_ctlop_t op, 360 void *arg, void *val) 361 { 362 dev_info_t *pdip = ddi_get_parent(dip); 363 364 cmn_err(CE_WARN, "Failed to process interrupt " 365 "for %s%d due to down-rev nexus driver %s%d", 366 ddi_driver_name(rdip), ddi_get_instance(rdip), 367 ddi_driver_name(pdip), ddi_get_instance(pdip)); 368 369 return (DDI_ENOTSUP); 370 } 371 372 #if defined(__i386) || defined(__amd64) 373 ddi_acc_handle_t 374 i_ddi_get_pci_config_handle(dev_info_t *dip) 375 { 376 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 377 378 return (intr_p ? intr_p->devi_cfg_handle : NULL); 379 } 380 381 void 382 i_ddi_set_pci_config_handle(dev_info_t *dip, ddi_acc_handle_t handle) 383 { 384 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 385 386 if (intr_p) 387 intr_p->devi_cfg_handle = handle; 388 } 389 390 391 int 392 i_ddi_get_msi_msix_cap_ptr(dev_info_t *dip) 393 { 394 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 395 396 return (intr_p ? intr_p->devi_cap_ptr : 0); 397 } 398 399 void 400 i_ddi_set_msi_msix_cap_ptr(dev_info_t *dip, int cap_ptr) 401 { 402 devinfo_intr_t *intr_p = DEVI(dip)->devi_intr_p; 403 404 if (intr_p) 405 intr_p->devi_cap_ptr = cap_ptr; 406 } 407 #endif 408 409 /* ARGSUSED */ 410 uint_t 411 i_ddi_get_msix_alloc_limit(dev_info_t *dip) 412 { 413 uint_t msix_alloc_limit = ddi_msix_alloc_limit; 414 415 #if defined(__sparc) 416 if (ddi_prop_exists(DDI_DEV_T_ANY, dip, DDI_PROP_NOTPROM | 417 DDI_PROP_DONTPASS, "#msix-request")) { 418 msix_alloc_limit = MAX(DDI_MAX_MSIX_ALLOC, 419 ddi_msix_alloc_limit); 420 } 421 #endif 422 423 return (msix_alloc_limit); 424 } 425