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