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