1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* 30*0Sstevel@tonic-gate * Layered driver support. 31*0Sstevel@tonic-gate */ 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #include <sys/atomic.h> 34*0Sstevel@tonic-gate #include <sys/types.h> 35*0Sstevel@tonic-gate #include <sys/t_lock.h> 36*0Sstevel@tonic-gate #include <sys/param.h> 37*0Sstevel@tonic-gate #include <sys/conf.h> 38*0Sstevel@tonic-gate #include <sys/systm.h> 39*0Sstevel@tonic-gate #include <sys/sysmacros.h> 40*0Sstevel@tonic-gate #include <sys/buf.h> 41*0Sstevel@tonic-gate #include <sys/cred.h> 42*0Sstevel@tonic-gate #include <sys/uio.h> 43*0Sstevel@tonic-gate #include <sys/vnode.h> 44*0Sstevel@tonic-gate #include <sys/fs/snode.h> 45*0Sstevel@tonic-gate #include <sys/open.h> 46*0Sstevel@tonic-gate #include <sys/kmem.h> 47*0Sstevel@tonic-gate #include <sys/file.h> 48*0Sstevel@tonic-gate #include <sys/bootconf.h> 49*0Sstevel@tonic-gate #include <sys/pathname.h> 50*0Sstevel@tonic-gate #include <sys/bitmap.h> 51*0Sstevel@tonic-gate #include <sys/stat.h> 52*0Sstevel@tonic-gate #include <sys/dditypes.h> 53*0Sstevel@tonic-gate #include <sys/ddi_impldefs.h> 54*0Sstevel@tonic-gate #include <sys/ddi.h> 55*0Sstevel@tonic-gate #include <sys/sunddi.h> 56*0Sstevel@tonic-gate #include <sys/sunndi.h> 57*0Sstevel@tonic-gate #include <sys/esunddi.h> 58*0Sstevel@tonic-gate #include <sys/autoconf.h> 59*0Sstevel@tonic-gate #include <sys/sunldi.h> 60*0Sstevel@tonic-gate #include <sys/sunldi_impl.h> 61*0Sstevel@tonic-gate #include <sys/errno.h> 62*0Sstevel@tonic-gate #include <sys/debug.h> 63*0Sstevel@tonic-gate #include <sys/modctl.h> 64*0Sstevel@tonic-gate #include <sys/var.h> 65*0Sstevel@tonic-gate #include <vm/seg_vn.h> 66*0Sstevel@tonic-gate 67*0Sstevel@tonic-gate #include <sys/stropts.h> 68*0Sstevel@tonic-gate #include <sys/strsubr.h> 69*0Sstevel@tonic-gate #include <sys/socket.h> 70*0Sstevel@tonic-gate #include <sys/socketvar.h> 71*0Sstevel@tonic-gate #include <sys/kstr.h> 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate 74*0Sstevel@tonic-gate /* 75*0Sstevel@tonic-gate * Define macros to manipulate snode, vnode, and open device flags 76*0Sstevel@tonic-gate */ 77*0Sstevel@tonic-gate #define VTYP_VALID(i) (((i) == VCHR) || ((i) == VBLK)) 78*0Sstevel@tonic-gate #define VTYP_TO_OTYP(i) (((i) == VCHR) ? OTYP_CHR : OTYP_BLK) 79*0Sstevel@tonic-gate #define VTYP_TO_STYP(i) (((i) == VCHR) ? S_IFCHR : S_IFBLK) 80*0Sstevel@tonic-gate 81*0Sstevel@tonic-gate #define OTYP_VALID(i) (((i) == OTYP_CHR) || ((i) == OTYP_BLK)) 82*0Sstevel@tonic-gate #define OTYP_TO_VTYP(i) (((i) == OTYP_CHR) ? VCHR : VBLK) 83*0Sstevel@tonic-gate #define OTYP_TO_STYP(i) (((i) == OTYP_CHR) ? S_IFCHR : S_IFBLK) 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate #define STYP_VALID(i) (((i) == S_IFCHR) || ((i) == S_IFBLK)) 86*0Sstevel@tonic-gate #define STYP_TO_VTYP(i) (((i) == S_IFCHR) ? VCHR : VBLK) 87*0Sstevel@tonic-gate 88*0Sstevel@tonic-gate /* 89*0Sstevel@tonic-gate * Define macros for accessing layered driver hash structures 90*0Sstevel@tonic-gate */ 91*0Sstevel@tonic-gate #define LH_HASH(vp) (handle_hash_func(vp) % LH_HASH_SZ) 92*0Sstevel@tonic-gate #define LI_HASH(mid, dip, dev) (ident_hash_func(mid, dip, dev) % LI_HASH_SZ) 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate /* 95*0Sstevel@tonic-gate * Define layered handle flags used in the lh_type field 96*0Sstevel@tonic-gate */ 97*0Sstevel@tonic-gate #define LH_STREAM (0x1) /* handle to a streams device */ 98*0Sstevel@tonic-gate #define LH_CBDEV (0x2) /* handle to a char/block device */ 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate /* 101*0Sstevel@tonic-gate * Define marco for devid property lookups 102*0Sstevel@tonic-gate */ 103*0Sstevel@tonic-gate #define DEVID_PROP_FLAGS (DDI_PROP_DONTPASS | \ 104*0Sstevel@tonic-gate DDI_PROP_TYPE_STRING|DDI_PROP_CANSLEEP) 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate /* 108*0Sstevel@tonic-gate * globals 109*0Sstevel@tonic-gate */ 110*0Sstevel@tonic-gate static kmutex_t ldi_ident_hash_lock[LI_HASH_SZ]; 111*0Sstevel@tonic-gate static struct ldi_ident *ldi_ident_hash[LI_HASH_SZ]; 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate static kmutex_t ldi_handle_hash_lock[LH_HASH_SZ]; 114*0Sstevel@tonic-gate static struct ldi_handle *ldi_handle_hash[LH_HASH_SZ]; 115*0Sstevel@tonic-gate static size_t ldi_handle_hash_count; 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate void 118*0Sstevel@tonic-gate ldi_init(void) 119*0Sstevel@tonic-gate { 120*0Sstevel@tonic-gate int i; 121*0Sstevel@tonic-gate 122*0Sstevel@tonic-gate ldi_handle_hash_count = 0; 123*0Sstevel@tonic-gate for (i = 0; i < LH_HASH_SZ; i++) { 124*0Sstevel@tonic-gate mutex_init(&ldi_handle_hash_lock[i], NULL, MUTEX_DEFAULT, NULL); 125*0Sstevel@tonic-gate ldi_handle_hash[i] = NULL; 126*0Sstevel@tonic-gate } 127*0Sstevel@tonic-gate for (i = 0; i < LI_HASH_SZ; i++) { 128*0Sstevel@tonic-gate mutex_init(&ldi_ident_hash_lock[i], NULL, MUTEX_DEFAULT, NULL); 129*0Sstevel@tonic-gate ldi_ident_hash[i] = NULL; 130*0Sstevel@tonic-gate } 131*0Sstevel@tonic-gate } 132*0Sstevel@tonic-gate 133*0Sstevel@tonic-gate /* 134*0Sstevel@tonic-gate * LDI ident manipulation functions 135*0Sstevel@tonic-gate */ 136*0Sstevel@tonic-gate static uint_t 137*0Sstevel@tonic-gate ident_hash_func(modid_t modid, dev_info_t *dip, dev_t dev) 138*0Sstevel@tonic-gate { 139*0Sstevel@tonic-gate if (dip != NULL) { 140*0Sstevel@tonic-gate uintptr_t k = (uintptr_t)dip; 141*0Sstevel@tonic-gate k >>= (int)highbit(sizeof (struct dev_info)); 142*0Sstevel@tonic-gate return ((uint_t)k); 143*0Sstevel@tonic-gate } else if (dev != DDI_DEV_T_NONE) { 144*0Sstevel@tonic-gate return (modid + getminor(dev) + getmajor(dev)); 145*0Sstevel@tonic-gate } else { 146*0Sstevel@tonic-gate return (modid); 147*0Sstevel@tonic-gate } 148*0Sstevel@tonic-gate } 149*0Sstevel@tonic-gate 150*0Sstevel@tonic-gate static struct ldi_ident ** 151*0Sstevel@tonic-gate ident_find_ref_nolock(modid_t modid, dev_info_t *dip, dev_t dev, major_t major) 152*0Sstevel@tonic-gate { 153*0Sstevel@tonic-gate struct ldi_ident **lipp = NULL; 154*0Sstevel@tonic-gate uint_t index = LI_HASH(modid, dip, dev); 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&ldi_ident_hash_lock[index])); 157*0Sstevel@tonic-gate 158*0Sstevel@tonic-gate for (lipp = &(ldi_ident_hash[index]); 159*0Sstevel@tonic-gate (*lipp != NULL); 160*0Sstevel@tonic-gate lipp = &((*lipp)->li_next)) { 161*0Sstevel@tonic-gate if (((*lipp)->li_modid == modid) && 162*0Sstevel@tonic-gate ((*lipp)->li_major == major) && 163*0Sstevel@tonic-gate ((*lipp)->li_dip == dip) && 164*0Sstevel@tonic-gate ((*lipp)->li_dev == dev)) 165*0Sstevel@tonic-gate break; 166*0Sstevel@tonic-gate } 167*0Sstevel@tonic-gate 168*0Sstevel@tonic-gate ASSERT(lipp != NULL); 169*0Sstevel@tonic-gate return (lipp); 170*0Sstevel@tonic-gate } 171*0Sstevel@tonic-gate 172*0Sstevel@tonic-gate static struct ldi_ident * 173*0Sstevel@tonic-gate ident_alloc(char *mod_name, dev_info_t *dip, dev_t dev, major_t major) 174*0Sstevel@tonic-gate { 175*0Sstevel@tonic-gate struct ldi_ident *lip, **lipp; 176*0Sstevel@tonic-gate modid_t modid; 177*0Sstevel@tonic-gate uint_t index; 178*0Sstevel@tonic-gate 179*0Sstevel@tonic-gate ASSERT(mod_name != NULL); 180*0Sstevel@tonic-gate 181*0Sstevel@tonic-gate /* get the module id */ 182*0Sstevel@tonic-gate modid = mod_name_to_modid(mod_name); 183*0Sstevel@tonic-gate ASSERT(modid != -1); 184*0Sstevel@tonic-gate 185*0Sstevel@tonic-gate /* allocate a new ident in case we need it */ 186*0Sstevel@tonic-gate lip = kmem_zalloc(sizeof (*lip), KM_SLEEP); 187*0Sstevel@tonic-gate 188*0Sstevel@tonic-gate /* search the hash for a matching ident */ 189*0Sstevel@tonic-gate index = LI_HASH(modid, dip, dev); 190*0Sstevel@tonic-gate mutex_enter(&ldi_ident_hash_lock[index]); 191*0Sstevel@tonic-gate lipp = ident_find_ref_nolock(modid, dip, dev, major); 192*0Sstevel@tonic-gate 193*0Sstevel@tonic-gate if (*lipp != NULL) { 194*0Sstevel@tonic-gate /* we found an indent in the hash */ 195*0Sstevel@tonic-gate ASSERT(strcmp((*lipp)->li_modname, mod_name) == 0); 196*0Sstevel@tonic-gate (*lipp)->li_ref++; 197*0Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 198*0Sstevel@tonic-gate kmem_free(lip, sizeof (struct ldi_ident)); 199*0Sstevel@tonic-gate return (*lipp); 200*0Sstevel@tonic-gate } 201*0Sstevel@tonic-gate 202*0Sstevel@tonic-gate /* initialize the new ident */ 203*0Sstevel@tonic-gate lip->li_next = NULL; 204*0Sstevel@tonic-gate lip->li_ref = 1; 205*0Sstevel@tonic-gate lip->li_modid = modid; 206*0Sstevel@tonic-gate lip->li_major = major; 207*0Sstevel@tonic-gate lip->li_dip = dip; 208*0Sstevel@tonic-gate lip->li_dev = dev; 209*0Sstevel@tonic-gate (void) strncpy(lip->li_modname, mod_name, sizeof (lip->li_modname) - 1); 210*0Sstevel@tonic-gate 211*0Sstevel@tonic-gate /* add it to the ident hash */ 212*0Sstevel@tonic-gate lip->li_next = ldi_ident_hash[index]; 213*0Sstevel@tonic-gate ldi_ident_hash[index] = lip; 214*0Sstevel@tonic-gate 215*0Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 216*0Sstevel@tonic-gate return (lip); 217*0Sstevel@tonic-gate } 218*0Sstevel@tonic-gate 219*0Sstevel@tonic-gate static void 220*0Sstevel@tonic-gate ident_hold(struct ldi_ident *lip) 221*0Sstevel@tonic-gate { 222*0Sstevel@tonic-gate uint_t index; 223*0Sstevel@tonic-gate 224*0Sstevel@tonic-gate ASSERT(lip != NULL); 225*0Sstevel@tonic-gate index = LI_HASH(lip->li_modid, lip->li_dip, lip->li_dev); 226*0Sstevel@tonic-gate mutex_enter(&ldi_ident_hash_lock[index]); 227*0Sstevel@tonic-gate ASSERT(lip->li_ref > 0); 228*0Sstevel@tonic-gate lip->li_ref++; 229*0Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 230*0Sstevel@tonic-gate } 231*0Sstevel@tonic-gate 232*0Sstevel@tonic-gate static void 233*0Sstevel@tonic-gate ident_release(struct ldi_ident *lip) 234*0Sstevel@tonic-gate { 235*0Sstevel@tonic-gate struct ldi_ident **lipp; 236*0Sstevel@tonic-gate uint_t index; 237*0Sstevel@tonic-gate 238*0Sstevel@tonic-gate ASSERT(lip != NULL); 239*0Sstevel@tonic-gate index = LI_HASH(lip->li_modid, lip->li_dip, lip->li_dev); 240*0Sstevel@tonic-gate mutex_enter(&ldi_ident_hash_lock[index]); 241*0Sstevel@tonic-gate 242*0Sstevel@tonic-gate ASSERT(lip->li_ref > 0); 243*0Sstevel@tonic-gate if (--lip->li_ref > 0) { 244*0Sstevel@tonic-gate /* there are more references to this ident */ 245*0Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 246*0Sstevel@tonic-gate return; 247*0Sstevel@tonic-gate } 248*0Sstevel@tonic-gate 249*0Sstevel@tonic-gate /* this was the last reference/open for this ident. free it. */ 250*0Sstevel@tonic-gate lipp = ident_find_ref_nolock( 251*0Sstevel@tonic-gate lip->li_modid, lip->li_dip, lip->li_dev, lip->li_major); 252*0Sstevel@tonic-gate 253*0Sstevel@tonic-gate ASSERT((lipp != NULL) && (*lipp != NULL)); 254*0Sstevel@tonic-gate *lipp = lip->li_next; 255*0Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 256*0Sstevel@tonic-gate kmem_free(lip, sizeof (struct ldi_ident)); 257*0Sstevel@tonic-gate } 258*0Sstevel@tonic-gate 259*0Sstevel@tonic-gate /* 260*0Sstevel@tonic-gate * LDI handle manipulation functions 261*0Sstevel@tonic-gate */ 262*0Sstevel@tonic-gate static uint_t 263*0Sstevel@tonic-gate handle_hash_func(void *vp) 264*0Sstevel@tonic-gate { 265*0Sstevel@tonic-gate uintptr_t k = (uintptr_t)vp; 266*0Sstevel@tonic-gate k >>= (int)highbit(sizeof (vnode_t)); 267*0Sstevel@tonic-gate return ((uint_t)k); 268*0Sstevel@tonic-gate } 269*0Sstevel@tonic-gate 270*0Sstevel@tonic-gate static struct ldi_handle ** 271*0Sstevel@tonic-gate handle_find_ref_nolock(vnode_t *vp, struct ldi_ident *ident) 272*0Sstevel@tonic-gate { 273*0Sstevel@tonic-gate struct ldi_handle **lhpp = NULL; 274*0Sstevel@tonic-gate uint_t index = LH_HASH(vp); 275*0Sstevel@tonic-gate 276*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&ldi_handle_hash_lock[index])); 277*0Sstevel@tonic-gate 278*0Sstevel@tonic-gate for (lhpp = &(ldi_handle_hash[index]); 279*0Sstevel@tonic-gate (*lhpp != NULL); 280*0Sstevel@tonic-gate lhpp = &((*lhpp)->lh_next)) { 281*0Sstevel@tonic-gate if (((*lhpp)->lh_ident == ident) && 282*0Sstevel@tonic-gate ((*lhpp)->lh_vp == vp)) 283*0Sstevel@tonic-gate break; 284*0Sstevel@tonic-gate } 285*0Sstevel@tonic-gate 286*0Sstevel@tonic-gate ASSERT(lhpp != NULL); 287*0Sstevel@tonic-gate return (lhpp); 288*0Sstevel@tonic-gate } 289*0Sstevel@tonic-gate 290*0Sstevel@tonic-gate static struct ldi_handle * 291*0Sstevel@tonic-gate handle_find(vnode_t *vp, struct ldi_ident *ident) 292*0Sstevel@tonic-gate { 293*0Sstevel@tonic-gate struct ldi_handle **lhpp; 294*0Sstevel@tonic-gate int index = LH_HASH(vp); 295*0Sstevel@tonic-gate 296*0Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[index]); 297*0Sstevel@tonic-gate lhpp = handle_find_ref_nolock(vp, ident); 298*0Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 299*0Sstevel@tonic-gate ASSERT(lhpp != NULL); 300*0Sstevel@tonic-gate return (*lhpp); 301*0Sstevel@tonic-gate } 302*0Sstevel@tonic-gate 303*0Sstevel@tonic-gate static struct ldi_handle * 304*0Sstevel@tonic-gate handle_alloc(vnode_t *vp, struct ldi_ident *ident) 305*0Sstevel@tonic-gate { 306*0Sstevel@tonic-gate struct ldi_handle *lhp, **lhpp; 307*0Sstevel@tonic-gate uint_t index; 308*0Sstevel@tonic-gate 309*0Sstevel@tonic-gate ASSERT((vp != NULL) && (ident != NULL)); 310*0Sstevel@tonic-gate 311*0Sstevel@tonic-gate /* allocate a new handle in case we need it */ 312*0Sstevel@tonic-gate lhp = kmem_zalloc(sizeof (*lhp), KM_SLEEP); 313*0Sstevel@tonic-gate 314*0Sstevel@tonic-gate /* search the hash for a matching handle */ 315*0Sstevel@tonic-gate index = LH_HASH(vp); 316*0Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[index]); 317*0Sstevel@tonic-gate lhpp = handle_find_ref_nolock(vp, ident); 318*0Sstevel@tonic-gate 319*0Sstevel@tonic-gate if (*lhpp != NULL) { 320*0Sstevel@tonic-gate /* we found a handle in the hash */ 321*0Sstevel@tonic-gate (*lhpp)->lh_ref++; 322*0Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 323*0Sstevel@tonic-gate 324*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "ldi handle alloc: dup " 325*0Sstevel@tonic-gate "lh=0x%p, ident=0x%p, vp=0x%p, drv=%s, minor=0x%x", 326*0Sstevel@tonic-gate (void *)*lhpp, (void *)ident, (void *)vp, 327*0Sstevel@tonic-gate mod_major_to_name(getmajor(vp->v_rdev)), 328*0Sstevel@tonic-gate getminor(vp->v_rdev))); 329*0Sstevel@tonic-gate 330*0Sstevel@tonic-gate kmem_free(lhp, sizeof (struct ldi_handle)); 331*0Sstevel@tonic-gate return (*lhpp); 332*0Sstevel@tonic-gate } 333*0Sstevel@tonic-gate 334*0Sstevel@tonic-gate /* initialize the new handle */ 335*0Sstevel@tonic-gate lhp->lh_ref = 1; 336*0Sstevel@tonic-gate lhp->lh_vp = vp; 337*0Sstevel@tonic-gate lhp->lh_ident = ident; 338*0Sstevel@tonic-gate mutex_init(lhp->lh_lock, NULL, MUTEX_DEFAULT, NULL); 339*0Sstevel@tonic-gate 340*0Sstevel@tonic-gate /* set the device type for this handle */ 341*0Sstevel@tonic-gate lhp->lh_type = 0; 342*0Sstevel@tonic-gate if (STREAMSTAB(getmajor(vp->v_rdev))) { 343*0Sstevel@tonic-gate ASSERT(vp->v_type == VCHR); 344*0Sstevel@tonic-gate lhp->lh_type |= LH_STREAM; 345*0Sstevel@tonic-gate } else { 346*0Sstevel@tonic-gate lhp->lh_type |= LH_CBDEV; 347*0Sstevel@tonic-gate } 348*0Sstevel@tonic-gate 349*0Sstevel@tonic-gate /* get holds on other objects */ 350*0Sstevel@tonic-gate ident_hold(ident); 351*0Sstevel@tonic-gate ASSERT(vp->v_count >= 1); 352*0Sstevel@tonic-gate VN_HOLD(vp); 353*0Sstevel@tonic-gate 354*0Sstevel@tonic-gate /* add it to the handle hash */ 355*0Sstevel@tonic-gate lhp->lh_next = ldi_handle_hash[index]; 356*0Sstevel@tonic-gate ldi_handle_hash[index] = lhp; 357*0Sstevel@tonic-gate atomic_add_long(&ldi_handle_hash_count, 1); 358*0Sstevel@tonic-gate 359*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "ldi handle alloc: new " 360*0Sstevel@tonic-gate "lh=0x%p, ident=0x%p, vp=0x%p, drv=%s, minor=0x%x", 361*0Sstevel@tonic-gate (void *)lhp, (void *)ident, (void *)vp, 362*0Sstevel@tonic-gate mod_major_to_name(getmajor(vp->v_rdev)), 363*0Sstevel@tonic-gate getminor(vp->v_rdev))); 364*0Sstevel@tonic-gate 365*0Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 366*0Sstevel@tonic-gate return (lhp); 367*0Sstevel@tonic-gate } 368*0Sstevel@tonic-gate 369*0Sstevel@tonic-gate static void 370*0Sstevel@tonic-gate handle_release(struct ldi_handle *lhp) 371*0Sstevel@tonic-gate { 372*0Sstevel@tonic-gate struct ldi_handle **lhpp; 373*0Sstevel@tonic-gate uint_t index; 374*0Sstevel@tonic-gate 375*0Sstevel@tonic-gate ASSERT(lhp != NULL); 376*0Sstevel@tonic-gate 377*0Sstevel@tonic-gate index = LH_HASH(lhp->lh_vp); 378*0Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[index]); 379*0Sstevel@tonic-gate 380*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "ldi handle release: " 381*0Sstevel@tonic-gate "lh=0x%p, ident=0x%p, vp=0x%p, drv=%s, minor=0x%x", 382*0Sstevel@tonic-gate (void *)lhp, (void *)lhp->lh_ident, (void *)lhp->lh_vp, 383*0Sstevel@tonic-gate mod_major_to_name(getmajor(lhp->lh_vp->v_rdev)), 384*0Sstevel@tonic-gate getminor(lhp->lh_vp->v_rdev))); 385*0Sstevel@tonic-gate 386*0Sstevel@tonic-gate ASSERT(lhp->lh_ref > 0); 387*0Sstevel@tonic-gate if (--lhp->lh_ref > 0) { 388*0Sstevel@tonic-gate /* there are more references to this handle */ 389*0Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 390*0Sstevel@tonic-gate return; 391*0Sstevel@tonic-gate } 392*0Sstevel@tonic-gate 393*0Sstevel@tonic-gate /* this was the last reference/open for this handle. free it. */ 394*0Sstevel@tonic-gate lhpp = handle_find_ref_nolock(lhp->lh_vp, lhp->lh_ident); 395*0Sstevel@tonic-gate ASSERT((lhpp != NULL) && (*lhpp != NULL)); 396*0Sstevel@tonic-gate *lhpp = lhp->lh_next; 397*0Sstevel@tonic-gate atomic_add_long(&ldi_handle_hash_count, -1); 398*0Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 399*0Sstevel@tonic-gate 400*0Sstevel@tonic-gate VN_RELE(lhp->lh_vp); 401*0Sstevel@tonic-gate ident_release(lhp->lh_ident); 402*0Sstevel@tonic-gate mutex_destroy(lhp->lh_lock); 403*0Sstevel@tonic-gate kmem_free(lhp, sizeof (struct ldi_handle)); 404*0Sstevel@tonic-gate } 405*0Sstevel@tonic-gate 406*0Sstevel@tonic-gate /* 407*0Sstevel@tonic-gate * LDI event manipulation functions 408*0Sstevel@tonic-gate */ 409*0Sstevel@tonic-gate static void 410*0Sstevel@tonic-gate handle_event_add(ldi_event_t *lep) 411*0Sstevel@tonic-gate { 412*0Sstevel@tonic-gate struct ldi_handle *lhp = lep->le_lhp; 413*0Sstevel@tonic-gate 414*0Sstevel@tonic-gate ASSERT(lhp != NULL); 415*0Sstevel@tonic-gate 416*0Sstevel@tonic-gate mutex_enter(lhp->lh_lock); 417*0Sstevel@tonic-gate if (lhp->lh_events == NULL) { 418*0Sstevel@tonic-gate lhp->lh_events = lep; 419*0Sstevel@tonic-gate mutex_exit(lhp->lh_lock); 420*0Sstevel@tonic-gate return; 421*0Sstevel@tonic-gate } 422*0Sstevel@tonic-gate 423*0Sstevel@tonic-gate lep->le_next = lhp->lh_events; 424*0Sstevel@tonic-gate lhp->lh_events->le_prev = lep; 425*0Sstevel@tonic-gate lhp->lh_events = lep; 426*0Sstevel@tonic-gate mutex_exit(lhp->lh_lock); 427*0Sstevel@tonic-gate } 428*0Sstevel@tonic-gate 429*0Sstevel@tonic-gate static void 430*0Sstevel@tonic-gate handle_event_remove(ldi_event_t *lep) 431*0Sstevel@tonic-gate { 432*0Sstevel@tonic-gate struct ldi_handle *lhp = lep->le_lhp; 433*0Sstevel@tonic-gate 434*0Sstevel@tonic-gate ASSERT(lhp != NULL); 435*0Sstevel@tonic-gate 436*0Sstevel@tonic-gate mutex_enter(lhp->lh_lock); 437*0Sstevel@tonic-gate if (lep->le_prev) 438*0Sstevel@tonic-gate lep->le_prev->le_next = lep->le_next; 439*0Sstevel@tonic-gate if (lep->le_next) 440*0Sstevel@tonic-gate lep->le_next->le_prev = lep->le_prev; 441*0Sstevel@tonic-gate if (lhp->lh_events == lep) 442*0Sstevel@tonic-gate lhp->lh_events = lep->le_next; 443*0Sstevel@tonic-gate mutex_exit(lhp->lh_lock); 444*0Sstevel@tonic-gate 445*0Sstevel@tonic-gate } 446*0Sstevel@tonic-gate 447*0Sstevel@tonic-gate static void 448*0Sstevel@tonic-gate i_ldi_callback(dev_info_t *dip, ddi_eventcookie_t event_cookie, 449*0Sstevel@tonic-gate void *arg, void *bus_impldata) 450*0Sstevel@tonic-gate { 451*0Sstevel@tonic-gate ldi_event_t *lep = (ldi_event_t *)arg; 452*0Sstevel@tonic-gate 453*0Sstevel@tonic-gate ASSERT(lep != NULL); 454*0Sstevel@tonic-gate 455*0Sstevel@tonic-gate LDI_EVENTCB((CE_NOTE, "%s: dip=0x%p, " 456*0Sstevel@tonic-gate "event_cookie=0x%p, ldi_eventp=0x%p", "i_ldi_callback", 457*0Sstevel@tonic-gate (void *)dip, (void *)event_cookie, (void *)lep)); 458*0Sstevel@tonic-gate 459*0Sstevel@tonic-gate lep->le_handler(lep->le_lhp, event_cookie, lep->le_arg, bus_impldata); 460*0Sstevel@tonic-gate } 461*0Sstevel@tonic-gate 462*0Sstevel@tonic-gate /* 463*0Sstevel@tonic-gate * LDI open helper functions 464*0Sstevel@tonic-gate */ 465*0Sstevel@tonic-gate 466*0Sstevel@tonic-gate /* get a vnode to a device by dev_t and otyp */ 467*0Sstevel@tonic-gate static int 468*0Sstevel@tonic-gate ldi_vp_from_dev(dev_t dev, int otyp, vnode_t **vpp) 469*0Sstevel@tonic-gate { 470*0Sstevel@tonic-gate dev_info_t *dip; 471*0Sstevel@tonic-gate vnode_t *vp; 472*0Sstevel@tonic-gate 473*0Sstevel@tonic-gate /* sanity check required input parameters */ 474*0Sstevel@tonic-gate if ((dev == DDI_DEV_T_NONE) || (!OTYP_VALID(otyp)) || (vpp == NULL)) 475*0Sstevel@tonic-gate return (EINVAL); 476*0Sstevel@tonic-gate 477*0Sstevel@tonic-gate if ((dip = e_ddi_hold_devi_by_dev(dev, 0)) == NULL) 478*0Sstevel@tonic-gate return (ENODEV); 479*0Sstevel@tonic-gate 480*0Sstevel@tonic-gate if (STREAMSTAB(getmajor(dev)) && (otyp != OTYP_CHR)) { 481*0Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev */ 482*0Sstevel@tonic-gate return (ENXIO); 483*0Sstevel@tonic-gate } 484*0Sstevel@tonic-gate 485*0Sstevel@tonic-gate vp = makespecvp(dev, OTYP_TO_VTYP(otyp)); 486*0Sstevel@tonic-gate spec_assoc_vp_with_devi(vp, dip); 487*0Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev */ 488*0Sstevel@tonic-gate 489*0Sstevel@tonic-gate *vpp = vp; 490*0Sstevel@tonic-gate return (0); 491*0Sstevel@tonic-gate } 492*0Sstevel@tonic-gate 493*0Sstevel@tonic-gate /* get a vnode to a device by pathname */ 494*0Sstevel@tonic-gate static int 495*0Sstevel@tonic-gate ldi_vp_from_name(char *path, vnode_t **vpp) 496*0Sstevel@tonic-gate { 497*0Sstevel@tonic-gate vnode_t *vp = NULL; 498*0Sstevel@tonic-gate int ret; 499*0Sstevel@tonic-gate 500*0Sstevel@tonic-gate /* sanity check required input parameters */ 501*0Sstevel@tonic-gate if ((path == NULL) || (vpp == NULL)) 502*0Sstevel@tonic-gate return (EINVAL); 503*0Sstevel@tonic-gate 504*0Sstevel@tonic-gate if (modrootloaded) { 505*0Sstevel@tonic-gate cred_t *saved_cred = curthread->t_cred; 506*0Sstevel@tonic-gate 507*0Sstevel@tonic-gate /* we don't want lookupname to fail because of credentials */ 508*0Sstevel@tonic-gate curthread->t_cred = kcred; 509*0Sstevel@tonic-gate ret = lookupname(path, UIO_SYSSPACE, FOLLOW, NULLVPP, &vp); 510*0Sstevel@tonic-gate curthread->t_cred = saved_cred; 511*0Sstevel@tonic-gate 512*0Sstevel@tonic-gate if (ret == 0) { 513*0Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops()) || 514*0Sstevel@tonic-gate !VTYP_VALID(vp->v_type)) { 515*0Sstevel@tonic-gate VN_RELE(vp); 516*0Sstevel@tonic-gate return (ENXIO); 517*0Sstevel@tonic-gate } 518*0Sstevel@tonic-gate } 519*0Sstevel@tonic-gate } 520*0Sstevel@tonic-gate 521*0Sstevel@tonic-gate if (vp == NULL) { 522*0Sstevel@tonic-gate dev_info_t *dip; 523*0Sstevel@tonic-gate dev_t dev; 524*0Sstevel@tonic-gate int spec_type; 525*0Sstevel@tonic-gate 526*0Sstevel@tonic-gate /* 527*0Sstevel@tonic-gate * Root is not mounted, the minor node is not specified, 528*0Sstevel@tonic-gate * or an OBP path has been specified. 529*0Sstevel@tonic-gate */ 530*0Sstevel@tonic-gate 531*0Sstevel@tonic-gate /* 532*0Sstevel@tonic-gate * Determine if path can be pruned to produce an 533*0Sstevel@tonic-gate * OBP or devfs path for resolve_pathname. 534*0Sstevel@tonic-gate */ 535*0Sstevel@tonic-gate if (strncmp(path, "/devices/", 9) == 0) 536*0Sstevel@tonic-gate path += strlen("/devices"); 537*0Sstevel@tonic-gate 538*0Sstevel@tonic-gate /* 539*0Sstevel@tonic-gate * if no minor node was specified the DEFAULT minor node 540*0Sstevel@tonic-gate * will be returned. if there is no DEFAULT minor node 541*0Sstevel@tonic-gate * one will be fabricated of type S_IFCHR with the minor 542*0Sstevel@tonic-gate * number equal to the instance number. 543*0Sstevel@tonic-gate */ 544*0Sstevel@tonic-gate ret = resolve_pathname(path, &dip, &dev, &spec_type); 545*0Sstevel@tonic-gate if (ret != 0) 546*0Sstevel@tonic-gate return (ENODEV); 547*0Sstevel@tonic-gate 548*0Sstevel@tonic-gate ASSERT(STYP_VALID(spec_type)); 549*0Sstevel@tonic-gate vp = makespecvp(dev, STYP_TO_VTYP(spec_type)); 550*0Sstevel@tonic-gate spec_assoc_vp_with_devi(vp, dip); 551*0Sstevel@tonic-gate ddi_release_devi(dip); 552*0Sstevel@tonic-gate } 553*0Sstevel@tonic-gate 554*0Sstevel@tonic-gate *vpp = vp; 555*0Sstevel@tonic-gate return (0); 556*0Sstevel@tonic-gate } 557*0Sstevel@tonic-gate 558*0Sstevel@tonic-gate static int 559*0Sstevel@tonic-gate ldi_devid_match(ddi_devid_t devid, dev_info_t *dip, dev_t dev) 560*0Sstevel@tonic-gate { 561*0Sstevel@tonic-gate char *devidstr; 562*0Sstevel@tonic-gate ddi_prop_t *propp; 563*0Sstevel@tonic-gate 564*0Sstevel@tonic-gate /* convert devid as a string property */ 565*0Sstevel@tonic-gate if ((devidstr = ddi_devid_str_encode(devid, NULL)) == NULL) 566*0Sstevel@tonic-gate return (0); 567*0Sstevel@tonic-gate 568*0Sstevel@tonic-gate /* 569*0Sstevel@tonic-gate * Search for the devid. For speed and ease in locking this 570*0Sstevel@tonic-gate * code directly uses the property implementation. See 571*0Sstevel@tonic-gate * ddi_common_devid_to_devlist() for a comment as to why. 572*0Sstevel@tonic-gate */ 573*0Sstevel@tonic-gate mutex_enter(&(DEVI(dip)->devi_lock)); 574*0Sstevel@tonic-gate 575*0Sstevel@tonic-gate /* check if there is a DDI_DEV_T_NONE devid property */ 576*0Sstevel@tonic-gate propp = i_ddi_prop_search(DDI_DEV_T_NONE, 577*0Sstevel@tonic-gate DEVID_PROP_NAME, DEVID_PROP_FLAGS, &DEVI(dip)->devi_hw_prop_ptr); 578*0Sstevel@tonic-gate if (propp != NULL) { 579*0Sstevel@tonic-gate if (ddi_devid_str_compare(propp->prop_val, devidstr) == 0) { 580*0Sstevel@tonic-gate /* a DDI_DEV_T_NONE devid exists and matchs */ 581*0Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 582*0Sstevel@tonic-gate ddi_devid_str_free(devidstr); 583*0Sstevel@tonic-gate return (1); 584*0Sstevel@tonic-gate } else { 585*0Sstevel@tonic-gate /* a DDI_DEV_T_NONE devid exists and doesn't match */ 586*0Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 587*0Sstevel@tonic-gate ddi_devid_str_free(devidstr); 588*0Sstevel@tonic-gate return (0); 589*0Sstevel@tonic-gate } 590*0Sstevel@tonic-gate } 591*0Sstevel@tonic-gate 592*0Sstevel@tonic-gate /* check if there is a devt specific devid property */ 593*0Sstevel@tonic-gate propp = i_ddi_prop_search(dev, 594*0Sstevel@tonic-gate DEVID_PROP_NAME, DEVID_PROP_FLAGS, &(DEVI(dip)->devi_hw_prop_ptr)); 595*0Sstevel@tonic-gate if (propp != NULL) { 596*0Sstevel@tonic-gate if (ddi_devid_str_compare(propp->prop_val, devidstr) == 0) { 597*0Sstevel@tonic-gate /* a devt specific devid exists and matchs */ 598*0Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 599*0Sstevel@tonic-gate ddi_devid_str_free(devidstr); 600*0Sstevel@tonic-gate return (1); 601*0Sstevel@tonic-gate } else { 602*0Sstevel@tonic-gate /* a devt specific devid exists and doesn't match */ 603*0Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 604*0Sstevel@tonic-gate ddi_devid_str_free(devidstr); 605*0Sstevel@tonic-gate return (0); 606*0Sstevel@tonic-gate } 607*0Sstevel@tonic-gate } 608*0Sstevel@tonic-gate 609*0Sstevel@tonic-gate /* we didn't find any devids associated with the device */ 610*0Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 611*0Sstevel@tonic-gate ddi_devid_str_free(devidstr); 612*0Sstevel@tonic-gate return (0); 613*0Sstevel@tonic-gate } 614*0Sstevel@tonic-gate 615*0Sstevel@tonic-gate /* get a handle to a device by devid and minor name */ 616*0Sstevel@tonic-gate static int 617*0Sstevel@tonic-gate ldi_vp_from_devid(ddi_devid_t devid, char *minor_name, vnode_t **vpp) 618*0Sstevel@tonic-gate { 619*0Sstevel@tonic-gate dev_info_t *dip; 620*0Sstevel@tonic-gate vnode_t *vp; 621*0Sstevel@tonic-gate int ret, i, ndevs, styp; 622*0Sstevel@tonic-gate dev_t dev, *devs; 623*0Sstevel@tonic-gate 624*0Sstevel@tonic-gate /* sanity check required input parameters */ 625*0Sstevel@tonic-gate if ((devid == NULL) || (minor_name == NULL) || (vpp == NULL)) 626*0Sstevel@tonic-gate return (EINVAL); 627*0Sstevel@tonic-gate 628*0Sstevel@tonic-gate ret = ddi_lyr_devid_to_devlist(devid, minor_name, &ndevs, &devs); 629*0Sstevel@tonic-gate if ((ret != DDI_SUCCESS) || (ndevs <= 0)) 630*0Sstevel@tonic-gate return (ENODEV); 631*0Sstevel@tonic-gate 632*0Sstevel@tonic-gate for (i = 0; i < ndevs; i++) { 633*0Sstevel@tonic-gate dev = devs[i]; 634*0Sstevel@tonic-gate 635*0Sstevel@tonic-gate if ((dip = e_ddi_hold_devi_by_dev(dev, 0)) == NULL) 636*0Sstevel@tonic-gate continue; 637*0Sstevel@tonic-gate 638*0Sstevel@tonic-gate /* 639*0Sstevel@tonic-gate * now we have to verify that the devid of the disk 640*0Sstevel@tonic-gate * still matches what was requested. 641*0Sstevel@tonic-gate * 642*0Sstevel@tonic-gate * we have to do this because the devid could have 643*0Sstevel@tonic-gate * changed between the call to ddi_lyr_devid_to_devlist() 644*0Sstevel@tonic-gate * and e_ddi_hold_devi_by_dev(). this is because when 645*0Sstevel@tonic-gate * ddi_lyr_devid_to_devlist() returns a list of devts 646*0Sstevel@tonic-gate * there is no kind of hold on those devts so a device 647*0Sstevel@tonic-gate * could have been replaced out from under us in the 648*0Sstevel@tonic-gate * interim. 649*0Sstevel@tonic-gate */ 650*0Sstevel@tonic-gate if ((i_ddi_minorname_to_devtspectype(dip, minor_name, 651*0Sstevel@tonic-gate NULL, &styp) == DDI_SUCCESS) && 652*0Sstevel@tonic-gate ldi_devid_match(devid, dip, dev)) 653*0Sstevel@tonic-gate break; 654*0Sstevel@tonic-gate 655*0Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev() */ 656*0Sstevel@tonic-gate } 657*0Sstevel@tonic-gate 658*0Sstevel@tonic-gate ddi_lyr_free_devlist(devs, ndevs); 659*0Sstevel@tonic-gate 660*0Sstevel@tonic-gate if (i == ndevs) 661*0Sstevel@tonic-gate return (ENODEV); 662*0Sstevel@tonic-gate 663*0Sstevel@tonic-gate ASSERT(STYP_VALID(styp)); 664*0Sstevel@tonic-gate vp = makespecvp(dev, STYP_TO_VTYP(styp)); 665*0Sstevel@tonic-gate spec_assoc_vp_with_devi(vp, dip); 666*0Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev */ 667*0Sstevel@tonic-gate 668*0Sstevel@tonic-gate *vpp = vp; 669*0Sstevel@tonic-gate return (0); 670*0Sstevel@tonic-gate } 671*0Sstevel@tonic-gate 672*0Sstevel@tonic-gate /* given a vnode, open a device */ 673*0Sstevel@tonic-gate static int 674*0Sstevel@tonic-gate ldi_open_by_vp(vnode_t **vpp, int flag, cred_t *cr, 675*0Sstevel@tonic-gate ldi_handle_t *lhp, struct ldi_ident *li) 676*0Sstevel@tonic-gate { 677*0Sstevel@tonic-gate struct ldi_handle *nlhp; 678*0Sstevel@tonic-gate vnode_t *vp; 679*0Sstevel@tonic-gate int err; 680*0Sstevel@tonic-gate 681*0Sstevel@tonic-gate ASSERT((vpp != NULL) && (*vpp != NULL)); 682*0Sstevel@tonic-gate ASSERT((lhp != NULL) && (li != NULL)); 683*0Sstevel@tonic-gate 684*0Sstevel@tonic-gate vp = *vpp; 685*0Sstevel@tonic-gate /* if the vnode passed in is not a device, then bail */ 686*0Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops()) || !VTYP_VALID(vp->v_type)) 687*0Sstevel@tonic-gate return (ENXIO); 688*0Sstevel@tonic-gate 689*0Sstevel@tonic-gate /* 690*0Sstevel@tonic-gate * the caller may have specified a node that 691*0Sstevel@tonic-gate * doesn't have cb_ops defined. the ldi doesn't yet 692*0Sstevel@tonic-gate * support opening devices without a valid cb_ops. 693*0Sstevel@tonic-gate */ 694*0Sstevel@tonic-gate if (devopsp[getmajor(vp->v_rdev)]->devo_cb_ops == NULL) 695*0Sstevel@tonic-gate return (ENXIO); 696*0Sstevel@tonic-gate 697*0Sstevel@tonic-gate /* open the device */ 698*0Sstevel@tonic-gate if ((err = VOP_OPEN(&vp, flag | FKLYR, cr)) != 0) 699*0Sstevel@tonic-gate return (err); 700*0Sstevel@tonic-gate 701*0Sstevel@tonic-gate /* possible clone open, make sure that we still have a spec node */ 702*0Sstevel@tonic-gate ASSERT(vn_matchops(vp, spec_getvnodeops())); 703*0Sstevel@tonic-gate 704*0Sstevel@tonic-gate nlhp = handle_alloc(vp, li); 705*0Sstevel@tonic-gate 706*0Sstevel@tonic-gate if (vp != *vpp) { 707*0Sstevel@tonic-gate /* 708*0Sstevel@tonic-gate * allocating the layered handle took a new hold on the vnode 709*0Sstevel@tonic-gate * so we can release the hold that was returned by the clone 710*0Sstevel@tonic-gate * open 711*0Sstevel@tonic-gate */ 712*0Sstevel@tonic-gate LDI_OPENCLOSE((CE_WARN, "%s: lh=0x%p", 713*0Sstevel@tonic-gate "ldi clone open", (void *)nlhp)); 714*0Sstevel@tonic-gate } else { 715*0Sstevel@tonic-gate LDI_OPENCLOSE((CE_WARN, "%s: lh=0x%p", 716*0Sstevel@tonic-gate "ldi open", (void *)nlhp)); 717*0Sstevel@tonic-gate } 718*0Sstevel@tonic-gate 719*0Sstevel@tonic-gate /* Flush back any dirty pages associated with the device. */ 720*0Sstevel@tonic-gate if (nlhp->lh_type & LH_CBDEV) { 721*0Sstevel@tonic-gate vnode_t *cvp = common_specvp(nlhp->lh_vp); 722*0Sstevel@tonic-gate dev_t dev = cvp->v_rdev; 723*0Sstevel@tonic-gate 724*0Sstevel@tonic-gate (void) VOP_PUTPAGE(cvp, 0, 0, B_INVAL, kcred); 725*0Sstevel@tonic-gate bflush(dev); 726*0Sstevel@tonic-gate } 727*0Sstevel@tonic-gate 728*0Sstevel@tonic-gate *vpp = vp; 729*0Sstevel@tonic-gate *lhp = (ldi_handle_t)nlhp; 730*0Sstevel@tonic-gate return (0); 731*0Sstevel@tonic-gate } 732*0Sstevel@tonic-gate 733*0Sstevel@tonic-gate /* Call a drivers prop_op(9E) interface */ 734*0Sstevel@tonic-gate static int 735*0Sstevel@tonic-gate i_ldi_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, 736*0Sstevel@tonic-gate int flags, char *name, caddr_t valuep, int *lengthp) 737*0Sstevel@tonic-gate { 738*0Sstevel@tonic-gate struct dev_ops *ops = NULL; 739*0Sstevel@tonic-gate int res; 740*0Sstevel@tonic-gate 741*0Sstevel@tonic-gate ASSERT((dip != NULL) && (name != NULL)); 742*0Sstevel@tonic-gate ASSERT((prop_op == PROP_LEN) || (valuep != NULL)); 743*0Sstevel@tonic-gate ASSERT(lengthp != NULL); 744*0Sstevel@tonic-gate 745*0Sstevel@tonic-gate /* 746*0Sstevel@tonic-gate * we can only be invoked after a driver has been opened and 747*0Sstevel@tonic-gate * someone has a layered handle to it, so there had better be 748*0Sstevel@tonic-gate * a valid ops vector. 749*0Sstevel@tonic-gate */ 750*0Sstevel@tonic-gate ops = DEVI(dip)->devi_ops; 751*0Sstevel@tonic-gate ASSERT(ops && ops->devo_cb_ops); 752*0Sstevel@tonic-gate 753*0Sstevel@tonic-gate /* 754*0Sstevel@tonic-gate * Some nexus drivers incorrectly set cb_prop_op to nodev, 755*0Sstevel@tonic-gate * nulldev or even NULL. 756*0Sstevel@tonic-gate */ 757*0Sstevel@tonic-gate if ((ops->devo_cb_ops->cb_prop_op == nodev) || 758*0Sstevel@tonic-gate (ops->devo_cb_ops->cb_prop_op == nulldev) || 759*0Sstevel@tonic-gate (ops->devo_cb_ops->cb_prop_op == NULL)) { 760*0Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 761*0Sstevel@tonic-gate } 762*0Sstevel@tonic-gate 763*0Sstevel@tonic-gate /* check if this is actually DDI_DEV_T_ANY query */ 764*0Sstevel@tonic-gate if (flags & LDI_DEV_T_ANY) { 765*0Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 766*0Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 767*0Sstevel@tonic-gate } 768*0Sstevel@tonic-gate 769*0Sstevel@tonic-gate res = cdev_prop_op(dev, dip, prop_op, flags, name, valuep, lengthp); 770*0Sstevel@tonic-gate return (res); 771*0Sstevel@tonic-gate } 772*0Sstevel@tonic-gate 773*0Sstevel@tonic-gate static void 774*0Sstevel@tonic-gate i_ldi_prop_op_free(struct prop_driver_data *pdd) 775*0Sstevel@tonic-gate { 776*0Sstevel@tonic-gate kmem_free(pdd, pdd->pdd_size); 777*0Sstevel@tonic-gate } 778*0Sstevel@tonic-gate 779*0Sstevel@tonic-gate static caddr_t 780*0Sstevel@tonic-gate i_ldi_prop_op_alloc(int prop_len) 781*0Sstevel@tonic-gate { 782*0Sstevel@tonic-gate struct prop_driver_data *pdd; 783*0Sstevel@tonic-gate int pdd_size; 784*0Sstevel@tonic-gate 785*0Sstevel@tonic-gate pdd_size = sizeof (struct prop_driver_data) + prop_len; 786*0Sstevel@tonic-gate pdd = kmem_alloc(pdd_size, KM_SLEEP); 787*0Sstevel@tonic-gate pdd->pdd_size = pdd_size; 788*0Sstevel@tonic-gate pdd->pdd_prop_free = i_ldi_prop_op_free; 789*0Sstevel@tonic-gate return ((caddr_t)&pdd[1]); 790*0Sstevel@tonic-gate } 791*0Sstevel@tonic-gate 792*0Sstevel@tonic-gate /* 793*0Sstevel@tonic-gate * i_ldi_prop_op_typed() is a wrapper for i_ldi_prop_op that is used 794*0Sstevel@tonic-gate * by the typed ldi property lookup interfaces. 795*0Sstevel@tonic-gate */ 796*0Sstevel@tonic-gate static int 797*0Sstevel@tonic-gate i_ldi_prop_op_typed(dev_t dev, dev_info_t *dip, int flags, char *name, 798*0Sstevel@tonic-gate caddr_t *datap, int *lengthp, int elem_size) 799*0Sstevel@tonic-gate { 800*0Sstevel@tonic-gate caddr_t prop_val; 801*0Sstevel@tonic-gate int prop_len, res; 802*0Sstevel@tonic-gate 803*0Sstevel@tonic-gate ASSERT((dip != NULL) && (name != NULL)); 804*0Sstevel@tonic-gate ASSERT((datap != NULL) && (lengthp != NULL)); 805*0Sstevel@tonic-gate 806*0Sstevel@tonic-gate /* 807*0Sstevel@tonic-gate * first call the drivers prop_op() interface to allow it 808*0Sstevel@tonic-gate * it to override default property values. 809*0Sstevel@tonic-gate */ 810*0Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN, 811*0Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, NULL, &prop_len); 812*0Sstevel@tonic-gate if (res != DDI_PROP_SUCCESS) 813*0Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 814*0Sstevel@tonic-gate 815*0Sstevel@tonic-gate /* sanity check the property length */ 816*0Sstevel@tonic-gate if (prop_len == 0) { 817*0Sstevel@tonic-gate /* 818*0Sstevel@tonic-gate * the ddi typed interfaces don't allow a drivers to 819*0Sstevel@tonic-gate * create properties with a length of 0. so we should 820*0Sstevel@tonic-gate * prevent drivers from returning 0 length dynamic 821*0Sstevel@tonic-gate * properties for typed property lookups. 822*0Sstevel@tonic-gate */ 823*0Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 824*0Sstevel@tonic-gate } 825*0Sstevel@tonic-gate 826*0Sstevel@tonic-gate /* sanity check the property length against the element size */ 827*0Sstevel@tonic-gate if (elem_size && ((prop_len % elem_size) != 0)) 828*0Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 829*0Sstevel@tonic-gate 830*0Sstevel@tonic-gate /* 831*0Sstevel@tonic-gate * got it. now allocate a prop_driver_data struct so that the 832*0Sstevel@tonic-gate * user can free the property via ddi_prop_free(). 833*0Sstevel@tonic-gate */ 834*0Sstevel@tonic-gate prop_val = i_ldi_prop_op_alloc(prop_len); 835*0Sstevel@tonic-gate 836*0Sstevel@tonic-gate /* lookup the property again, this time get the value */ 837*0Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN_AND_VAL_BUF, 838*0Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, prop_val, &prop_len); 839*0Sstevel@tonic-gate if (res != DDI_PROP_SUCCESS) { 840*0Sstevel@tonic-gate ddi_prop_free(prop_val); 841*0Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 842*0Sstevel@tonic-gate } 843*0Sstevel@tonic-gate 844*0Sstevel@tonic-gate /* sanity check the property length */ 845*0Sstevel@tonic-gate if (prop_len == 0) { 846*0Sstevel@tonic-gate ddi_prop_free(prop_val); 847*0Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 848*0Sstevel@tonic-gate } 849*0Sstevel@tonic-gate 850*0Sstevel@tonic-gate /* sanity check the property length against the element size */ 851*0Sstevel@tonic-gate if (elem_size && ((prop_len % elem_size) != 0)) { 852*0Sstevel@tonic-gate ddi_prop_free(prop_val); 853*0Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 854*0Sstevel@tonic-gate } 855*0Sstevel@tonic-gate 856*0Sstevel@tonic-gate /* 857*0Sstevel@tonic-gate * return the prop_driver_data struct and, optionally, the length 858*0Sstevel@tonic-gate * of the data. 859*0Sstevel@tonic-gate */ 860*0Sstevel@tonic-gate *datap = prop_val; 861*0Sstevel@tonic-gate *lengthp = prop_len; 862*0Sstevel@tonic-gate 863*0Sstevel@tonic-gate return (DDI_PROP_SUCCESS); 864*0Sstevel@tonic-gate } 865*0Sstevel@tonic-gate 866*0Sstevel@tonic-gate /* 867*0Sstevel@tonic-gate * i_check_string looks at a string property and makes sure its 868*0Sstevel@tonic-gate * a valid null terminated string 869*0Sstevel@tonic-gate */ 870*0Sstevel@tonic-gate static int 871*0Sstevel@tonic-gate i_check_string(char *str, int prop_len) 872*0Sstevel@tonic-gate { 873*0Sstevel@tonic-gate int i; 874*0Sstevel@tonic-gate 875*0Sstevel@tonic-gate ASSERT(str != NULL); 876*0Sstevel@tonic-gate 877*0Sstevel@tonic-gate for (i = 0; i < prop_len; i++) { 878*0Sstevel@tonic-gate if (str[i] == '\0') 879*0Sstevel@tonic-gate return (0); 880*0Sstevel@tonic-gate } 881*0Sstevel@tonic-gate return (1); 882*0Sstevel@tonic-gate } 883*0Sstevel@tonic-gate 884*0Sstevel@tonic-gate /* 885*0Sstevel@tonic-gate * i_pack_string_array takes a a string array property that is represented 886*0Sstevel@tonic-gate * as a concatination of strings (with the NULL character included for 887*0Sstevel@tonic-gate * each string) and converts it into a format that can be returned by 888*0Sstevel@tonic-gate * ldi_prop_lookup_string_array. 889*0Sstevel@tonic-gate */ 890*0Sstevel@tonic-gate static int 891*0Sstevel@tonic-gate i_pack_string_array(char *str_concat, int prop_len, 892*0Sstevel@tonic-gate char ***str_arrayp, int *nelemp) 893*0Sstevel@tonic-gate { 894*0Sstevel@tonic-gate int i, nelem, pack_size; 895*0Sstevel@tonic-gate char **str_array, *strptr; 896*0Sstevel@tonic-gate 897*0Sstevel@tonic-gate /* 898*0Sstevel@tonic-gate * first we need to sanity check the input string array. 899*0Sstevel@tonic-gate * in essence this can be done my making sure that the last 900*0Sstevel@tonic-gate * character of the array passed in is null. (meaning the last 901*0Sstevel@tonic-gate * string in the array is NULL terminated. 902*0Sstevel@tonic-gate */ 903*0Sstevel@tonic-gate if (str_concat[prop_len - 1] != '\0') 904*0Sstevel@tonic-gate return (1); 905*0Sstevel@tonic-gate 906*0Sstevel@tonic-gate /* now let's count the number of strings in the array */ 907*0Sstevel@tonic-gate for (nelem = i = 0; i < prop_len; i++) 908*0Sstevel@tonic-gate if (str_concat[i] == '\0') 909*0Sstevel@tonic-gate nelem++; 910*0Sstevel@tonic-gate ASSERT(nelem >= 1); 911*0Sstevel@tonic-gate 912*0Sstevel@tonic-gate /* now let's allocate memory for the new packed property */ 913*0Sstevel@tonic-gate pack_size = (sizeof (char *) * (nelem + 1)) + prop_len; 914*0Sstevel@tonic-gate str_array = (char **)i_ldi_prop_op_alloc(pack_size); 915*0Sstevel@tonic-gate 916*0Sstevel@tonic-gate /* let's copy the actual string data into the new property */ 917*0Sstevel@tonic-gate strptr = (char *)&(str_array[nelem + 1]); 918*0Sstevel@tonic-gate bcopy(str_concat, strptr, prop_len); 919*0Sstevel@tonic-gate 920*0Sstevel@tonic-gate /* now initialize the string array pointers */ 921*0Sstevel@tonic-gate for (i = 0; i < nelem; i++) { 922*0Sstevel@tonic-gate str_array[i] = strptr; 923*0Sstevel@tonic-gate strptr += strlen(strptr) + 1; 924*0Sstevel@tonic-gate } 925*0Sstevel@tonic-gate str_array[nelem] = NULL; 926*0Sstevel@tonic-gate 927*0Sstevel@tonic-gate /* set the return values */ 928*0Sstevel@tonic-gate *str_arrayp = str_array; 929*0Sstevel@tonic-gate *nelemp = nelem; 930*0Sstevel@tonic-gate 931*0Sstevel@tonic-gate return (0); 932*0Sstevel@tonic-gate } 933*0Sstevel@tonic-gate 934*0Sstevel@tonic-gate 935*0Sstevel@tonic-gate /* 936*0Sstevel@tonic-gate * LDI Project private device usage interfaces 937*0Sstevel@tonic-gate */ 938*0Sstevel@tonic-gate 939*0Sstevel@tonic-gate /* 940*0Sstevel@tonic-gate * Get a count of how many devices are currentl open by different consumers 941*0Sstevel@tonic-gate */ 942*0Sstevel@tonic-gate int 943*0Sstevel@tonic-gate ldi_usage_count() 944*0Sstevel@tonic-gate { 945*0Sstevel@tonic-gate return (ldi_handle_hash_count); 946*0Sstevel@tonic-gate } 947*0Sstevel@tonic-gate 948*0Sstevel@tonic-gate static void 949*0Sstevel@tonic-gate ldi_usage_walker_tgt_helper(ldi_usage_t *ldi_usage, vnode_t *vp) 950*0Sstevel@tonic-gate { 951*0Sstevel@tonic-gate dev_info_t *dip; 952*0Sstevel@tonic-gate dev_t dev; 953*0Sstevel@tonic-gate 954*0Sstevel@tonic-gate ASSERT(STYP_VALID(VTYP_TO_STYP(vp->v_type))); 955*0Sstevel@tonic-gate 956*0Sstevel@tonic-gate /* get the target devt */ 957*0Sstevel@tonic-gate dev = vp->v_rdev; 958*0Sstevel@tonic-gate 959*0Sstevel@tonic-gate /* try to get the target dip */ 960*0Sstevel@tonic-gate dip = VTOCS(vp)->s_dip; 961*0Sstevel@tonic-gate if (dip != NULL) { 962*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 963*0Sstevel@tonic-gate } else if (dev != DDI_DEV_T_NONE) { 964*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 965*0Sstevel@tonic-gate } 966*0Sstevel@tonic-gate 967*0Sstevel@tonic-gate /* set the target information */ 968*0Sstevel@tonic-gate ldi_usage->tgt_name = mod_major_to_name(getmajor(dev)); 969*0Sstevel@tonic-gate ldi_usage->tgt_modid = mod_name_to_modid(ldi_usage->tgt_name); 970*0Sstevel@tonic-gate ldi_usage->tgt_devt = dev; 971*0Sstevel@tonic-gate ldi_usage->tgt_spec_type = VTYP_TO_STYP(vp->v_type); 972*0Sstevel@tonic-gate ldi_usage->tgt_dip = dip; 973*0Sstevel@tonic-gate } 974*0Sstevel@tonic-gate 975*0Sstevel@tonic-gate 976*0Sstevel@tonic-gate static int 977*0Sstevel@tonic-gate ldi_usage_walker_helper(struct ldi_ident *lip, vnode_t *vp, 978*0Sstevel@tonic-gate void *arg, int (*callback)(const ldi_usage_t *, void *)) 979*0Sstevel@tonic-gate { 980*0Sstevel@tonic-gate ldi_usage_t ldi_usage; 981*0Sstevel@tonic-gate struct devnames *dnp; 982*0Sstevel@tonic-gate dev_info_t *dip; 983*0Sstevel@tonic-gate major_t major; 984*0Sstevel@tonic-gate dev_t dev; 985*0Sstevel@tonic-gate int ret = LDI_USAGE_CONTINUE; 986*0Sstevel@tonic-gate 987*0Sstevel@tonic-gate /* set the target device information */ 988*0Sstevel@tonic-gate ldi_usage_walker_tgt_helper(&ldi_usage, vp); 989*0Sstevel@tonic-gate 990*0Sstevel@tonic-gate /* get the source devt */ 991*0Sstevel@tonic-gate dev = lip->li_dev; 992*0Sstevel@tonic-gate 993*0Sstevel@tonic-gate /* try to get the source dip */ 994*0Sstevel@tonic-gate dip = lip->li_dip; 995*0Sstevel@tonic-gate if (dip != NULL) { 996*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 997*0Sstevel@tonic-gate } else if (dev != DDI_DEV_T_NONE) { 998*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 999*0Sstevel@tonic-gate } 1000*0Sstevel@tonic-gate 1001*0Sstevel@tonic-gate /* set the valid source information */ 1002*0Sstevel@tonic-gate ldi_usage.src_modid = lip->li_modid; 1003*0Sstevel@tonic-gate ldi_usage.src_name = lip->li_modname; 1004*0Sstevel@tonic-gate ldi_usage.src_devt = dev; 1005*0Sstevel@tonic-gate ldi_usage.src_dip = dip; 1006*0Sstevel@tonic-gate 1007*0Sstevel@tonic-gate /* 1008*0Sstevel@tonic-gate * if the source ident represents either: 1009*0Sstevel@tonic-gate * 1010*0Sstevel@tonic-gate * - a kernel module (and not a device or device driver) 1011*0Sstevel@tonic-gate * - a device node 1012*0Sstevel@tonic-gate * 1013*0Sstevel@tonic-gate * then we currently have all the info we need to report the 1014*0Sstevel@tonic-gate * usage information so invoke the callback function. 1015*0Sstevel@tonic-gate */ 1016*0Sstevel@tonic-gate if (((lip->li_major == -1) && (dev == DDI_DEV_T_NONE)) || 1017*0Sstevel@tonic-gate (dip != NULL)) { 1018*0Sstevel@tonic-gate ret = callback(&ldi_usage, arg); 1019*0Sstevel@tonic-gate if (dip != NULL) 1020*0Sstevel@tonic-gate ddi_release_devi(dip); 1021*0Sstevel@tonic-gate if (ldi_usage.tgt_dip != NULL) 1022*0Sstevel@tonic-gate ddi_release_devi(ldi_usage.tgt_dip); 1023*0Sstevel@tonic-gate return (ret); 1024*0Sstevel@tonic-gate } 1025*0Sstevel@tonic-gate 1026*0Sstevel@tonic-gate /* 1027*0Sstevel@tonic-gate * now this is kinda gross. 1028*0Sstevel@tonic-gate * 1029*0Sstevel@tonic-gate * what we do here is attempt to associate every device instance 1030*0Sstevel@tonic-gate * of the source driver on the system with the open target driver. 1031*0Sstevel@tonic-gate * we do this because we don't know which instance of the device 1032*0Sstevel@tonic-gate * could potentially access the lower device so we assume that all 1033*0Sstevel@tonic-gate * the instances could access it. 1034*0Sstevel@tonic-gate * 1035*0Sstevel@tonic-gate * there are two ways we could have gotten here: 1036*0Sstevel@tonic-gate * 1037*0Sstevel@tonic-gate * 1) this layered ident represents one created using only a 1038*0Sstevel@tonic-gate * major number or a driver module name. this means that when 1039*0Sstevel@tonic-gate * it was created we could not associate it with a particular 1040*0Sstevel@tonic-gate * dev_t or device instance. 1041*0Sstevel@tonic-gate * 1042*0Sstevel@tonic-gate * when could this possibly happen you ask? 1043*0Sstevel@tonic-gate * 1044*0Sstevel@tonic-gate * a perfect example of this is streams persistent links. 1045*0Sstevel@tonic-gate * when a persistant streams link is formed we can't associate 1046*0Sstevel@tonic-gate * the lower device stream with any particular upper device 1047*0Sstevel@tonic-gate * stream or instance. this is because any particular upper 1048*0Sstevel@tonic-gate * device stream could be closed, then another could be 1049*0Sstevel@tonic-gate * opened with a different dev_t and device instance, and it 1050*0Sstevel@tonic-gate * would still have access to the lower linked stream. 1051*0Sstevel@tonic-gate * 1052*0Sstevel@tonic-gate * since any instance of the upper streams driver could 1053*0Sstevel@tonic-gate * potentially access the lower stream whenever it wants, 1054*0Sstevel@tonic-gate * we represent that here by associating the opened lower 1055*0Sstevel@tonic-gate * device with every existing device instance of the upper 1056*0Sstevel@tonic-gate * streams driver. 1057*0Sstevel@tonic-gate * 1058*0Sstevel@tonic-gate * 2) This case should really never happen but we'll include it 1059*0Sstevel@tonic-gate * for completeness. 1060*0Sstevel@tonic-gate * 1061*0Sstevel@tonic-gate * it's possible that we could have gotten here because we 1062*0Sstevel@tonic-gate * have a dev_t for the upper device but we couldn't find a 1063*0Sstevel@tonic-gate * dip associated with that dev_t. 1064*0Sstevel@tonic-gate * 1065*0Sstevel@tonic-gate * the only types of devices that have dev_t without an 1066*0Sstevel@tonic-gate * associated dip are unbound DLPIv2 network devices. These 1067*0Sstevel@tonic-gate * types of devices exist to be able to attach a stream to any 1068*0Sstevel@tonic-gate * instance of a hardware network device. since these types of 1069*0Sstevel@tonic-gate * devices are usually hardware devices they should never 1070*0Sstevel@tonic-gate * really have other devices open. 1071*0Sstevel@tonic-gate */ 1072*0Sstevel@tonic-gate if (dev != DDI_DEV_T_NONE) 1073*0Sstevel@tonic-gate major = getmajor(dev); 1074*0Sstevel@tonic-gate else 1075*0Sstevel@tonic-gate major = lip->li_major; 1076*0Sstevel@tonic-gate 1077*0Sstevel@tonic-gate ASSERT((major >= 0) && (major < devcnt)); 1078*0Sstevel@tonic-gate 1079*0Sstevel@tonic-gate dnp = &devnamesp[major]; 1080*0Sstevel@tonic-gate LOCK_DEV_OPS(&dnp->dn_lock); 1081*0Sstevel@tonic-gate dip = dnp->dn_head; 1082*0Sstevel@tonic-gate while ((dip) && (ret == LDI_USAGE_CONTINUE)) { 1083*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 1084*0Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock); 1085*0Sstevel@tonic-gate 1086*0Sstevel@tonic-gate /* set the source dip */ 1087*0Sstevel@tonic-gate ldi_usage.src_dip = dip; 1088*0Sstevel@tonic-gate 1089*0Sstevel@tonic-gate /* invoke the callback function */ 1090*0Sstevel@tonic-gate ret = callback(&ldi_usage, arg); 1091*0Sstevel@tonic-gate 1092*0Sstevel@tonic-gate LOCK_DEV_OPS(&dnp->dn_lock); 1093*0Sstevel@tonic-gate ddi_release_devi(dip); 1094*0Sstevel@tonic-gate dip = ddi_get_next(dip); 1095*0Sstevel@tonic-gate } 1096*0Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock); 1097*0Sstevel@tonic-gate 1098*0Sstevel@tonic-gate /* if there was a target dip, release it */ 1099*0Sstevel@tonic-gate if (ldi_usage.tgt_dip != NULL) 1100*0Sstevel@tonic-gate ddi_release_devi(ldi_usage.tgt_dip); 1101*0Sstevel@tonic-gate 1102*0Sstevel@tonic-gate return (ret); 1103*0Sstevel@tonic-gate } 1104*0Sstevel@tonic-gate 1105*0Sstevel@tonic-gate /* 1106*0Sstevel@tonic-gate * ldi_usage_walker() - this walker reports LDI kernel device usage 1107*0Sstevel@tonic-gate * information via the callback() callback function. the LDI keeps track 1108*0Sstevel@tonic-gate * of what devices are being accessed in its own internal data structures. 1109*0Sstevel@tonic-gate * this function walks those data structures to determine device usage. 1110*0Sstevel@tonic-gate */ 1111*0Sstevel@tonic-gate void 1112*0Sstevel@tonic-gate ldi_usage_walker(void *arg, int (*callback)(const ldi_usage_t *, void *)) 1113*0Sstevel@tonic-gate { 1114*0Sstevel@tonic-gate struct ldi_handle *lhp; 1115*0Sstevel@tonic-gate struct ldi_ident *lip; 1116*0Sstevel@tonic-gate vnode_t *vp; 1117*0Sstevel@tonic-gate int i; 1118*0Sstevel@tonic-gate int ret = LDI_USAGE_CONTINUE; 1119*0Sstevel@tonic-gate 1120*0Sstevel@tonic-gate for (i = 0; i < LH_HASH_SZ; i++) { 1121*0Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[i]); 1122*0Sstevel@tonic-gate 1123*0Sstevel@tonic-gate lhp = ldi_handle_hash[i]; 1124*0Sstevel@tonic-gate while ((lhp != NULL) && (ret == LDI_USAGE_CONTINUE)) { 1125*0Sstevel@tonic-gate lip = lhp->lh_ident; 1126*0Sstevel@tonic-gate vp = lhp->lh_vp; 1127*0Sstevel@tonic-gate 1128*0Sstevel@tonic-gate /* invoke the devinfo callback function */ 1129*0Sstevel@tonic-gate ret = ldi_usage_walker_helper(lip, vp, arg, callback); 1130*0Sstevel@tonic-gate 1131*0Sstevel@tonic-gate lhp = lhp->lh_next; 1132*0Sstevel@tonic-gate } 1133*0Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[i]); 1134*0Sstevel@tonic-gate 1135*0Sstevel@tonic-gate if (ret != LDI_USAGE_CONTINUE) 1136*0Sstevel@tonic-gate break; 1137*0Sstevel@tonic-gate } 1138*0Sstevel@tonic-gate } 1139*0Sstevel@tonic-gate 1140*0Sstevel@tonic-gate /* 1141*0Sstevel@tonic-gate * LDI Project private interfaces (streams linking interfaces) 1142*0Sstevel@tonic-gate * 1143*0Sstevel@tonic-gate * Streams supports a type of built in device layering via linking. 1144*0Sstevel@tonic-gate * Certain types of streams drivers can be streams multiplexors. 1145*0Sstevel@tonic-gate * A streams multiplexor supports the I_LINK/I_PLINK operation. 1146*0Sstevel@tonic-gate * These operations allows other streams devices to be linked under the 1147*0Sstevel@tonic-gate * multiplexor. By definition all streams multiplexors are devices 1148*0Sstevel@tonic-gate * so this linking is a type of device layering where the multiplexor 1149*0Sstevel@tonic-gate * device is layered on top of the device linked below it. 1150*0Sstevel@tonic-gate */ 1151*0Sstevel@tonic-gate 1152*0Sstevel@tonic-gate /* 1153*0Sstevel@tonic-gate * ldi_mlink_lh() is invoked when streams are linked using LDI handles. 1154*0Sstevel@tonic-gate * It is not used for normal I_LINKs and I_PLINKs using file descriptors. 1155*0Sstevel@tonic-gate * 1156*0Sstevel@tonic-gate * The streams framework keeps track of links via the file_t of the lower 1157*0Sstevel@tonic-gate * stream. The LDI keeps track of devices using a vnode. In the case 1158*0Sstevel@tonic-gate * of a streams link created via an LDI handle, fnk_lh() allocates 1159*0Sstevel@tonic-gate * a file_t that the streams framework can use to track the linkage. 1160*0Sstevel@tonic-gate */ 1161*0Sstevel@tonic-gate int 1162*0Sstevel@tonic-gate ldi_mlink_lh(vnode_t *vp, int cmd, intptr_t arg, cred_t *crp, int *rvalp) 1163*0Sstevel@tonic-gate { 1164*0Sstevel@tonic-gate struct ldi_handle *lhp = (struct ldi_handle *)arg; 1165*0Sstevel@tonic-gate vnode_t *vpdown; 1166*0Sstevel@tonic-gate file_t *fpdown; 1167*0Sstevel@tonic-gate int err; 1168*0Sstevel@tonic-gate 1169*0Sstevel@tonic-gate if (lhp == NULL) 1170*0Sstevel@tonic-gate return (EINVAL); 1171*0Sstevel@tonic-gate 1172*0Sstevel@tonic-gate vpdown = lhp->lh_vp; 1173*0Sstevel@tonic-gate ASSERT(vn_matchops(vpdown, spec_getvnodeops())); 1174*0Sstevel@tonic-gate ASSERT(cmd == _I_PLINK_LH); 1175*0Sstevel@tonic-gate 1176*0Sstevel@tonic-gate /* 1177*0Sstevel@tonic-gate * create a new lower vnode and a file_t that points to it, 1178*0Sstevel@tonic-gate * streams linking requires a file_t. falloc() returns with 1179*0Sstevel@tonic-gate * fpdown locked. 1180*0Sstevel@tonic-gate */ 1181*0Sstevel@tonic-gate VN_HOLD(vpdown); 1182*0Sstevel@tonic-gate (void) falloc(vpdown, FREAD|FWRITE, &fpdown, NULL); 1183*0Sstevel@tonic-gate mutex_exit(&fpdown->f_tlock); 1184*0Sstevel@tonic-gate 1185*0Sstevel@tonic-gate /* try to establish the link */ 1186*0Sstevel@tonic-gate err = mlink_file(vp, I_PLINK, fpdown, crp, rvalp, 1); 1187*0Sstevel@tonic-gate 1188*0Sstevel@tonic-gate if (err != 0) { 1189*0Sstevel@tonic-gate /* the link failed, free the file_t and release the vnode */ 1190*0Sstevel@tonic-gate mutex_enter(&fpdown->f_tlock); 1191*0Sstevel@tonic-gate unfalloc(fpdown); 1192*0Sstevel@tonic-gate VN_RELE(vpdown); 1193*0Sstevel@tonic-gate } 1194*0Sstevel@tonic-gate 1195*0Sstevel@tonic-gate return (err); 1196*0Sstevel@tonic-gate } 1197*0Sstevel@tonic-gate 1198*0Sstevel@tonic-gate /* 1199*0Sstevel@tonic-gate * ldi_mlink_fp() is invoked for all successfull streams linkages created 1200*0Sstevel@tonic-gate * via I_LINK and I_PLINK. ldi_mlink_fp() records the linkage information 1201*0Sstevel@tonic-gate * in its internal state so that the devinfo snapshot code has some 1202*0Sstevel@tonic-gate * observability into streams device linkage information. 1203*0Sstevel@tonic-gate */ 1204*0Sstevel@tonic-gate void 1205*0Sstevel@tonic-gate ldi_mlink_fp(struct stdata *stp, file_t *fpdown, int lhlink, int type) 1206*0Sstevel@tonic-gate { 1207*0Sstevel@tonic-gate vnode_t *vp = fpdown->f_vnode; 1208*0Sstevel@tonic-gate struct snode *sp, *csp; 1209*0Sstevel@tonic-gate ldi_ident_t li; 1210*0Sstevel@tonic-gate major_t major; 1211*0Sstevel@tonic-gate int ret; 1212*0Sstevel@tonic-gate 1213*0Sstevel@tonic-gate /* if the lower stream is not a device then return */ 1214*0Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops())) 1215*0Sstevel@tonic-gate return; 1216*0Sstevel@tonic-gate 1217*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1218*0Sstevel@tonic-gate 1219*0Sstevel@tonic-gate LDI_STREAMS_LNK((CE_NOTE, "%s: linking streams " 1220*0Sstevel@tonic-gate "stp=0x%p, fpdown=0x%p", "ldi_mlink_fp", 1221*0Sstevel@tonic-gate (void *)stp, (void *)fpdown)); 1222*0Sstevel@tonic-gate 1223*0Sstevel@tonic-gate sp = VTOS(vp); 1224*0Sstevel@tonic-gate csp = VTOS(sp->s_commonvp); 1225*0Sstevel@tonic-gate 1226*0Sstevel@tonic-gate /* check if this was a plink via a layered handle */ 1227*0Sstevel@tonic-gate if (lhlink) { 1228*0Sstevel@tonic-gate /* 1229*0Sstevel@tonic-gate * increment the common snode s_count. 1230*0Sstevel@tonic-gate * 1231*0Sstevel@tonic-gate * this is done because after the link operation there 1232*0Sstevel@tonic-gate * are two ways that s_count can be decremented. 1233*0Sstevel@tonic-gate * 1234*0Sstevel@tonic-gate * when the layered handle used to create the link is 1235*0Sstevel@tonic-gate * closed, spec_close() is called and it will decrement 1236*0Sstevel@tonic-gate * s_count in the common snode. if we don't increment 1237*0Sstevel@tonic-gate * s_count here then this could cause spec_close() to 1238*0Sstevel@tonic-gate * actually close the device while it's still linked 1239*0Sstevel@tonic-gate * under a multiplexer. 1240*0Sstevel@tonic-gate * 1241*0Sstevel@tonic-gate * also, when the lower stream is unlinked, closef() is 1242*0Sstevel@tonic-gate * called for the file_t associated with this snode. 1243*0Sstevel@tonic-gate * closef() will call spec_close(), which will decrement 1244*0Sstevel@tonic-gate * s_count. if we dont't increment s_count here then this 1245*0Sstevel@tonic-gate * could cause spec_close() to actually close the device 1246*0Sstevel@tonic-gate * while there may still be valid layered handles 1247*0Sstevel@tonic-gate * pointing to it. 1248*0Sstevel@tonic-gate */ 1249*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 1250*0Sstevel@tonic-gate ASSERT(csp->s_count >= 1); 1251*0Sstevel@tonic-gate csp->s_count++; 1252*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 1253*0Sstevel@tonic-gate 1254*0Sstevel@tonic-gate /* 1255*0Sstevel@tonic-gate * decrement the f_count. 1256*0Sstevel@tonic-gate * this is done because the layered driver framework does 1257*0Sstevel@tonic-gate * not actually cache a copy of the file_t allocated to 1258*0Sstevel@tonic-gate * do the link. this is done here instead of in ldi_mlink_lh() 1259*0Sstevel@tonic-gate * because there is a window in ldi_mlink_lh() between where 1260*0Sstevel@tonic-gate * milnk_file() returns and we would decrement the f_count 1261*0Sstevel@tonic-gate * when the stream could be unlinked. 1262*0Sstevel@tonic-gate */ 1263*0Sstevel@tonic-gate mutex_enter(&fpdown->f_tlock); 1264*0Sstevel@tonic-gate fpdown->f_count--; 1265*0Sstevel@tonic-gate mutex_exit(&fpdown->f_tlock); 1266*0Sstevel@tonic-gate } 1267*0Sstevel@tonic-gate 1268*0Sstevel@tonic-gate /* 1269*0Sstevel@tonic-gate * NOTE: here we rely on the streams subsystem not allowing 1270*0Sstevel@tonic-gate * a stream to be multiplexed more than once. if this 1271*0Sstevel@tonic-gate * changes, we break. 1272*0Sstevel@tonic-gate * 1273*0Sstevel@tonic-gate * mark the snode/stream as multiplexed 1274*0Sstevel@tonic-gate */ 1275*0Sstevel@tonic-gate mutex_enter(&sp->s_lock); 1276*0Sstevel@tonic-gate ASSERT(!(sp->s_flag & SMUXED)); 1277*0Sstevel@tonic-gate sp->s_flag |= SMUXED; 1278*0Sstevel@tonic-gate mutex_exit(&sp->s_lock); 1279*0Sstevel@tonic-gate 1280*0Sstevel@tonic-gate /* get a layered ident for the upper stream */ 1281*0Sstevel@tonic-gate if (type == LINKNORMAL) { 1282*0Sstevel@tonic-gate /* 1283*0Sstevel@tonic-gate * if the link is not persistant then we can associate 1284*0Sstevel@tonic-gate * the upper stream with a dev_t. this is because the 1285*0Sstevel@tonic-gate * upper stream is associated with a vnode, which is 1286*0Sstevel@tonic-gate * associated with a dev_t and this binding can't change 1287*0Sstevel@tonic-gate * during the life of the stream. since the link isn't 1288*0Sstevel@tonic-gate * persistant once the stream is destroyed the link is 1289*0Sstevel@tonic-gate * destroyed. so the dev_t will be valid for the life 1290*0Sstevel@tonic-gate * of the link. 1291*0Sstevel@tonic-gate */ 1292*0Sstevel@tonic-gate ret = ldi_ident_from_stream(getendq(stp->sd_wrq), &li); 1293*0Sstevel@tonic-gate } else { 1294*0Sstevel@tonic-gate /* 1295*0Sstevel@tonic-gate * if the link is persistant we can only associate the 1296*0Sstevel@tonic-gate * link with a driver (and not a dev_t.) this is 1297*0Sstevel@tonic-gate * because subsequent opens of the upper device may result 1298*0Sstevel@tonic-gate * in a different stream (and dev_t) having access to 1299*0Sstevel@tonic-gate * the lower stream. 1300*0Sstevel@tonic-gate * 1301*0Sstevel@tonic-gate * for example, if the upper stream is closed after the 1302*0Sstevel@tonic-gate * persistant link operation is compleated, a subsequent 1303*0Sstevel@tonic-gate * open of the upper device will create a new stream which 1304*0Sstevel@tonic-gate * may have a different dev_t and an unlink operation 1305*0Sstevel@tonic-gate * can be performed using this new upper stream. 1306*0Sstevel@tonic-gate */ 1307*0Sstevel@tonic-gate ASSERT(type == LINKPERSIST); 1308*0Sstevel@tonic-gate major = getmajor(stp->sd_vnode->v_rdev); 1309*0Sstevel@tonic-gate ret = ldi_ident_from_major(major, &li); 1310*0Sstevel@tonic-gate } 1311*0Sstevel@tonic-gate 1312*0Sstevel@tonic-gate ASSERT(ret == 0); 1313*0Sstevel@tonic-gate (void) handle_alloc(vp, (struct ldi_ident *)li); 1314*0Sstevel@tonic-gate ldi_ident_release(li); 1315*0Sstevel@tonic-gate } 1316*0Sstevel@tonic-gate 1317*0Sstevel@tonic-gate void 1318*0Sstevel@tonic-gate ldi_munlink_fp(struct stdata *stp, file_t *fpdown, int type) 1319*0Sstevel@tonic-gate { 1320*0Sstevel@tonic-gate struct ldi_handle *lhp; 1321*0Sstevel@tonic-gate vnode_t *vp = (vnode_t *)fpdown->f_vnode; 1322*0Sstevel@tonic-gate struct snode *sp; 1323*0Sstevel@tonic-gate ldi_ident_t li; 1324*0Sstevel@tonic-gate major_t major; 1325*0Sstevel@tonic-gate int ret; 1326*0Sstevel@tonic-gate 1327*0Sstevel@tonic-gate /* if the lower stream is not a device then return */ 1328*0Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops())) 1329*0Sstevel@tonic-gate return; 1330*0Sstevel@tonic-gate 1331*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1332*0Sstevel@tonic-gate ASSERT((type == LINKNORMAL) || (type == LINKPERSIST)); 1333*0Sstevel@tonic-gate 1334*0Sstevel@tonic-gate LDI_STREAMS_LNK((CE_NOTE, "%s: unlinking streams " 1335*0Sstevel@tonic-gate "stp=0x%p, fpdown=0x%p", "ldi_munlink_fp", 1336*0Sstevel@tonic-gate (void *)stp, (void *)fpdown)); 1337*0Sstevel@tonic-gate 1338*0Sstevel@tonic-gate /* 1339*0Sstevel@tonic-gate * NOTE: here we rely on the streams subsystem not allowing 1340*0Sstevel@tonic-gate * a stream to be multiplexed more than once. if this 1341*0Sstevel@tonic-gate * changes, we break. 1342*0Sstevel@tonic-gate * 1343*0Sstevel@tonic-gate * mark the snode/stream as not multiplexed 1344*0Sstevel@tonic-gate */ 1345*0Sstevel@tonic-gate sp = VTOS(vp); 1346*0Sstevel@tonic-gate mutex_enter(&sp->s_lock); 1347*0Sstevel@tonic-gate ASSERT(sp->s_flag & SMUXED); 1348*0Sstevel@tonic-gate sp->s_flag &= ~SMUXED; 1349*0Sstevel@tonic-gate mutex_exit(&sp->s_lock); 1350*0Sstevel@tonic-gate 1351*0Sstevel@tonic-gate /* 1352*0Sstevel@tonic-gate * clear the owner for this snode 1353*0Sstevel@tonic-gate * see the comment in ldi_mlink_fp() for information about how 1354*0Sstevel@tonic-gate * the ident is allocated 1355*0Sstevel@tonic-gate */ 1356*0Sstevel@tonic-gate if (type == LINKNORMAL) { 1357*0Sstevel@tonic-gate ret = ldi_ident_from_stream(getendq(stp->sd_wrq), &li); 1358*0Sstevel@tonic-gate } else { 1359*0Sstevel@tonic-gate ASSERT(type == LINKPERSIST); 1360*0Sstevel@tonic-gate major = getmajor(stp->sd_vnode->v_rdev); 1361*0Sstevel@tonic-gate ret = ldi_ident_from_major(major, &li); 1362*0Sstevel@tonic-gate } 1363*0Sstevel@tonic-gate 1364*0Sstevel@tonic-gate ASSERT(ret == 0); 1365*0Sstevel@tonic-gate lhp = handle_find(vp, (struct ldi_ident *)li); 1366*0Sstevel@tonic-gate handle_release(lhp); 1367*0Sstevel@tonic-gate ldi_ident_release(li); 1368*0Sstevel@tonic-gate } 1369*0Sstevel@tonic-gate 1370*0Sstevel@tonic-gate /* 1371*0Sstevel@tonic-gate * LDI Consolidation private interfaces 1372*0Sstevel@tonic-gate */ 1373*0Sstevel@tonic-gate int 1374*0Sstevel@tonic-gate ldi_ident_from_mod(struct modlinkage *modlp, ldi_ident_t *lip) 1375*0Sstevel@tonic-gate { 1376*0Sstevel@tonic-gate struct modctl *modp; 1377*0Sstevel@tonic-gate major_t major; 1378*0Sstevel@tonic-gate char *name; 1379*0Sstevel@tonic-gate 1380*0Sstevel@tonic-gate if ((modlp == NULL) || (lip == NULL)) 1381*0Sstevel@tonic-gate return (EINVAL); 1382*0Sstevel@tonic-gate 1383*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1384*0Sstevel@tonic-gate 1385*0Sstevel@tonic-gate modp = mod_getctl(modlp); 1386*0Sstevel@tonic-gate if (modp == NULL) 1387*0Sstevel@tonic-gate return (EINVAL); 1388*0Sstevel@tonic-gate name = modp->mod_modname; 1389*0Sstevel@tonic-gate if (name == NULL) 1390*0Sstevel@tonic-gate return (EINVAL); 1391*0Sstevel@tonic-gate major = mod_name_to_major(name); 1392*0Sstevel@tonic-gate 1393*0Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, DDI_DEV_T_NONE, major); 1394*0Sstevel@tonic-gate 1395*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "%s: li=0x%p, mod=%s", 1396*0Sstevel@tonic-gate "ldi_ident_from_mod", (void *)*lip, name)); 1397*0Sstevel@tonic-gate 1398*0Sstevel@tonic-gate return (0); 1399*0Sstevel@tonic-gate } 1400*0Sstevel@tonic-gate 1401*0Sstevel@tonic-gate ldi_ident_t 1402*0Sstevel@tonic-gate ldi_ident_from_anon() 1403*0Sstevel@tonic-gate { 1404*0Sstevel@tonic-gate ldi_ident_t lip; 1405*0Sstevel@tonic-gate 1406*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1407*0Sstevel@tonic-gate 1408*0Sstevel@tonic-gate lip = (ldi_ident_t)ident_alloc("genunix", NULL, DDI_DEV_T_NONE, -1); 1409*0Sstevel@tonic-gate 1410*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "%s: li=0x%p, mod=%s", 1411*0Sstevel@tonic-gate "ldi_ident_from_anon", (void *)lip, "genunix")); 1412*0Sstevel@tonic-gate 1413*0Sstevel@tonic-gate return (lip); 1414*0Sstevel@tonic-gate } 1415*0Sstevel@tonic-gate 1416*0Sstevel@tonic-gate 1417*0Sstevel@tonic-gate /* 1418*0Sstevel@tonic-gate * LDI Public interfaces 1419*0Sstevel@tonic-gate */ 1420*0Sstevel@tonic-gate int 1421*0Sstevel@tonic-gate ldi_ident_from_stream(struct queue *sq, ldi_ident_t *lip) 1422*0Sstevel@tonic-gate { 1423*0Sstevel@tonic-gate struct stdata *stp; 1424*0Sstevel@tonic-gate dev_t dev; 1425*0Sstevel@tonic-gate char *name; 1426*0Sstevel@tonic-gate 1427*0Sstevel@tonic-gate if ((sq == NULL) || (lip == NULL)) 1428*0Sstevel@tonic-gate return (EINVAL); 1429*0Sstevel@tonic-gate 1430*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1431*0Sstevel@tonic-gate 1432*0Sstevel@tonic-gate stp = sq->q_stream; 1433*0Sstevel@tonic-gate if (!vn_matchops(stp->sd_vnode, spec_getvnodeops())) 1434*0Sstevel@tonic-gate return (EINVAL); 1435*0Sstevel@tonic-gate 1436*0Sstevel@tonic-gate dev = stp->sd_vnode->v_rdev; 1437*0Sstevel@tonic-gate name = mod_major_to_name(getmajor(dev)); 1438*0Sstevel@tonic-gate if (name == NULL) 1439*0Sstevel@tonic-gate return (EINVAL); 1440*0Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, dev, -1); 1441*0Sstevel@tonic-gate 1442*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1443*0Sstevel@tonic-gate "%s: li=0x%p, mod=%s, minor=0x%x, stp=0x%p", 1444*0Sstevel@tonic-gate "ldi_ident_from_stream", (void *)*lip, name, getminor(dev), 1445*0Sstevel@tonic-gate (void *)stp)); 1446*0Sstevel@tonic-gate 1447*0Sstevel@tonic-gate return (0); 1448*0Sstevel@tonic-gate } 1449*0Sstevel@tonic-gate 1450*0Sstevel@tonic-gate int 1451*0Sstevel@tonic-gate ldi_ident_from_dev(dev_t dev, ldi_ident_t *lip) 1452*0Sstevel@tonic-gate { 1453*0Sstevel@tonic-gate char *name; 1454*0Sstevel@tonic-gate 1455*0Sstevel@tonic-gate if (lip == NULL) 1456*0Sstevel@tonic-gate return (EINVAL); 1457*0Sstevel@tonic-gate 1458*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1459*0Sstevel@tonic-gate 1460*0Sstevel@tonic-gate name = mod_major_to_name(getmajor(dev)); 1461*0Sstevel@tonic-gate if (name == NULL) 1462*0Sstevel@tonic-gate return (EINVAL); 1463*0Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, dev, -1); 1464*0Sstevel@tonic-gate 1465*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1466*0Sstevel@tonic-gate "%s: li=0x%p, mod=%s, minor=0x%x", 1467*0Sstevel@tonic-gate "ldi_ident_from_dev", (void *)*lip, name, getminor(dev))); 1468*0Sstevel@tonic-gate 1469*0Sstevel@tonic-gate return (0); 1470*0Sstevel@tonic-gate } 1471*0Sstevel@tonic-gate 1472*0Sstevel@tonic-gate int 1473*0Sstevel@tonic-gate ldi_ident_from_dip(dev_info_t *dip, ldi_ident_t *lip) 1474*0Sstevel@tonic-gate { 1475*0Sstevel@tonic-gate struct dev_info *devi = (struct dev_info *)dip; 1476*0Sstevel@tonic-gate char *name; 1477*0Sstevel@tonic-gate 1478*0Sstevel@tonic-gate if ((dip == NULL) || (lip == NULL)) 1479*0Sstevel@tonic-gate return (EINVAL); 1480*0Sstevel@tonic-gate 1481*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1482*0Sstevel@tonic-gate 1483*0Sstevel@tonic-gate name = mod_major_to_name(devi->devi_major); 1484*0Sstevel@tonic-gate if (name == NULL) 1485*0Sstevel@tonic-gate return (EINVAL); 1486*0Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, dip, DDI_DEV_T_NONE, -1); 1487*0Sstevel@tonic-gate 1488*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1489*0Sstevel@tonic-gate "%s: li=0x%p, mod=%s, dip=0x%p", 1490*0Sstevel@tonic-gate "ldi_ident_from_dip", (void *)*lip, name, (void *)devi)); 1491*0Sstevel@tonic-gate 1492*0Sstevel@tonic-gate return (0); 1493*0Sstevel@tonic-gate } 1494*0Sstevel@tonic-gate 1495*0Sstevel@tonic-gate int 1496*0Sstevel@tonic-gate ldi_ident_from_major(major_t major, ldi_ident_t *lip) 1497*0Sstevel@tonic-gate { 1498*0Sstevel@tonic-gate char *name; 1499*0Sstevel@tonic-gate 1500*0Sstevel@tonic-gate if (lip == NULL) 1501*0Sstevel@tonic-gate return (EINVAL); 1502*0Sstevel@tonic-gate 1503*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1504*0Sstevel@tonic-gate 1505*0Sstevel@tonic-gate name = mod_major_to_name(major); 1506*0Sstevel@tonic-gate if (name == NULL) 1507*0Sstevel@tonic-gate return (EINVAL); 1508*0Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, DDI_DEV_T_NONE, major); 1509*0Sstevel@tonic-gate 1510*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1511*0Sstevel@tonic-gate "%s: li=0x%p, mod=%s", 1512*0Sstevel@tonic-gate "ldi_ident_from_major", (void *)*lip, name)); 1513*0Sstevel@tonic-gate 1514*0Sstevel@tonic-gate return (0); 1515*0Sstevel@tonic-gate } 1516*0Sstevel@tonic-gate 1517*0Sstevel@tonic-gate void 1518*0Sstevel@tonic-gate ldi_ident_release(ldi_ident_t li) 1519*0Sstevel@tonic-gate { 1520*0Sstevel@tonic-gate struct ldi_ident *ident = (struct ldi_ident *)li; 1521*0Sstevel@tonic-gate char *name; 1522*0Sstevel@tonic-gate 1523*0Sstevel@tonic-gate if (li == NULL) 1524*0Sstevel@tonic-gate return; 1525*0Sstevel@tonic-gate 1526*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1527*0Sstevel@tonic-gate 1528*0Sstevel@tonic-gate name = ident->li_modname; 1529*0Sstevel@tonic-gate 1530*0Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1531*0Sstevel@tonic-gate "%s: li=0x%p, mod=%s", 1532*0Sstevel@tonic-gate "ldi_ident_release", (void *)li, name)); 1533*0Sstevel@tonic-gate 1534*0Sstevel@tonic-gate ident_release((struct ldi_ident *)li); 1535*0Sstevel@tonic-gate } 1536*0Sstevel@tonic-gate 1537*0Sstevel@tonic-gate /* get a handle to a device by dev_t and otyp */ 1538*0Sstevel@tonic-gate int 1539*0Sstevel@tonic-gate ldi_open_by_dev(dev_t *devp, int otyp, int flag, cred_t *cr, 1540*0Sstevel@tonic-gate ldi_handle_t *lhp, ldi_ident_t li) 1541*0Sstevel@tonic-gate { 1542*0Sstevel@tonic-gate struct ldi_ident *lip = (struct ldi_ident *)li; 1543*0Sstevel@tonic-gate int ret; 1544*0Sstevel@tonic-gate vnode_t *vp; 1545*0Sstevel@tonic-gate 1546*0Sstevel@tonic-gate /* sanity check required input parameters */ 1547*0Sstevel@tonic-gate if ((devp == NULL) || (!OTYP_VALID(otyp)) || (cr == NULL) || 1548*0Sstevel@tonic-gate (lhp == NULL) || (lip == NULL)) 1549*0Sstevel@tonic-gate return (EINVAL); 1550*0Sstevel@tonic-gate 1551*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1552*0Sstevel@tonic-gate 1553*0Sstevel@tonic-gate if ((ret = ldi_vp_from_dev(*devp, otyp, &vp)) != 0) 1554*0Sstevel@tonic-gate return (ret); 1555*0Sstevel@tonic-gate 1556*0Sstevel@tonic-gate if ((ret = ldi_open_by_vp(&vp, flag, cr, lhp, lip)) == 0) { 1557*0Sstevel@tonic-gate *devp = vp->v_rdev; 1558*0Sstevel@tonic-gate } 1559*0Sstevel@tonic-gate VN_RELE(vp); 1560*0Sstevel@tonic-gate 1561*0Sstevel@tonic-gate return (ret); 1562*0Sstevel@tonic-gate } 1563*0Sstevel@tonic-gate 1564*0Sstevel@tonic-gate /* get a handle to a device by pathname */ 1565*0Sstevel@tonic-gate int 1566*0Sstevel@tonic-gate ldi_open_by_name(char *pathname, int flag, cred_t *cr, 1567*0Sstevel@tonic-gate ldi_handle_t *lhp, ldi_ident_t li) 1568*0Sstevel@tonic-gate { 1569*0Sstevel@tonic-gate struct ldi_ident *lip = (struct ldi_ident *)li; 1570*0Sstevel@tonic-gate int ret; 1571*0Sstevel@tonic-gate vnode_t *vp; 1572*0Sstevel@tonic-gate 1573*0Sstevel@tonic-gate /* sanity check required input parameters */ 1574*0Sstevel@tonic-gate if ((pathname == NULL) || (*pathname != '/') || 1575*0Sstevel@tonic-gate (cr == NULL) || (lhp == NULL) || (lip == NULL)) 1576*0Sstevel@tonic-gate return (EINVAL); 1577*0Sstevel@tonic-gate 1578*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1579*0Sstevel@tonic-gate 1580*0Sstevel@tonic-gate if ((ret = ldi_vp_from_name(pathname, &vp)) != 0) 1581*0Sstevel@tonic-gate return (ret); 1582*0Sstevel@tonic-gate 1583*0Sstevel@tonic-gate ret = ldi_open_by_vp(&vp, flag, cr, lhp, lip); 1584*0Sstevel@tonic-gate VN_RELE(vp); 1585*0Sstevel@tonic-gate 1586*0Sstevel@tonic-gate return (ret); 1587*0Sstevel@tonic-gate } 1588*0Sstevel@tonic-gate 1589*0Sstevel@tonic-gate /* get a handle to a device by devid and minor_name */ 1590*0Sstevel@tonic-gate int 1591*0Sstevel@tonic-gate ldi_open_by_devid(ddi_devid_t devid, char *minor_name, 1592*0Sstevel@tonic-gate int flag, cred_t *cr, ldi_handle_t *lhp, ldi_ident_t li) 1593*0Sstevel@tonic-gate { 1594*0Sstevel@tonic-gate struct ldi_ident *lip = (struct ldi_ident *)li; 1595*0Sstevel@tonic-gate int ret; 1596*0Sstevel@tonic-gate vnode_t *vp; 1597*0Sstevel@tonic-gate 1598*0Sstevel@tonic-gate /* sanity check required input parameters */ 1599*0Sstevel@tonic-gate if ((minor_name == NULL) || (cr == NULL) || 1600*0Sstevel@tonic-gate (lhp == NULL) || (lip == NULL)) 1601*0Sstevel@tonic-gate return (EINVAL); 1602*0Sstevel@tonic-gate 1603*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1604*0Sstevel@tonic-gate 1605*0Sstevel@tonic-gate if ((ret = ldi_vp_from_devid(devid, minor_name, &vp)) != 0) 1606*0Sstevel@tonic-gate return (ret); 1607*0Sstevel@tonic-gate 1608*0Sstevel@tonic-gate ret = ldi_open_by_vp(&vp, flag, cr, lhp, lip); 1609*0Sstevel@tonic-gate VN_RELE(vp); 1610*0Sstevel@tonic-gate 1611*0Sstevel@tonic-gate return (ret); 1612*0Sstevel@tonic-gate } 1613*0Sstevel@tonic-gate 1614*0Sstevel@tonic-gate int 1615*0Sstevel@tonic-gate ldi_close(ldi_handle_t lh, int flag, cred_t *cr) 1616*0Sstevel@tonic-gate { 1617*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1618*0Sstevel@tonic-gate struct ldi_event *lep; 1619*0Sstevel@tonic-gate int err = 0; 1620*0Sstevel@tonic-gate 1621*0Sstevel@tonic-gate if (lh == NULL) 1622*0Sstevel@tonic-gate return (EINVAL); 1623*0Sstevel@tonic-gate 1624*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1625*0Sstevel@tonic-gate 1626*0Sstevel@tonic-gate /* Flush back any dirty pages associated with the device. */ 1627*0Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1628*0Sstevel@tonic-gate vnode_t *cvp = common_specvp(handlep->lh_vp); 1629*0Sstevel@tonic-gate dev_t dev = cvp->v_rdev; 1630*0Sstevel@tonic-gate 1631*0Sstevel@tonic-gate (void) VOP_PUTPAGE(cvp, 0, 0, B_INVAL, kcred); 1632*0Sstevel@tonic-gate bflush(dev); 1633*0Sstevel@tonic-gate } 1634*0Sstevel@tonic-gate 1635*0Sstevel@tonic-gate /* 1636*0Sstevel@tonic-gate * Any event handlers should have been unregistered by the 1637*0Sstevel@tonic-gate * time ldi_close() is called. If they haven't then it's a 1638*0Sstevel@tonic-gate * bug. 1639*0Sstevel@tonic-gate * 1640*0Sstevel@tonic-gate * In a debug kernel we'll panic to make the problem obvious. 1641*0Sstevel@tonic-gate */ 1642*0Sstevel@tonic-gate ASSERT(handlep->lh_events == NULL); 1643*0Sstevel@tonic-gate 1644*0Sstevel@tonic-gate /* 1645*0Sstevel@tonic-gate * On a production kernel we'll "do the right thing" (unregister 1646*0Sstevel@tonic-gate * the event handlers) and then complain about having to do the 1647*0Sstevel@tonic-gate * work ourselves. 1648*0Sstevel@tonic-gate */ 1649*0Sstevel@tonic-gate while ((lep = handlep->lh_events) != NULL) { 1650*0Sstevel@tonic-gate err = 1; 1651*0Sstevel@tonic-gate (void) ldi_remove_event_handler(lh, (ldi_callback_id_t)lep); 1652*0Sstevel@tonic-gate } 1653*0Sstevel@tonic-gate if (err) { 1654*0Sstevel@tonic-gate struct ldi_ident *lip = handlep->lh_ident; 1655*0Sstevel@tonic-gate ASSERT(lip != NULL); 1656*0Sstevel@tonic-gate cmn_err(CE_NOTE, "ldi err: %s " 1657*0Sstevel@tonic-gate "failed to unregister layered event handlers before " 1658*0Sstevel@tonic-gate "closing devices", lip->li_modname); 1659*0Sstevel@tonic-gate } 1660*0Sstevel@tonic-gate 1661*0Sstevel@tonic-gate /* do a layered close on the device */ 1662*0Sstevel@tonic-gate err = VOP_CLOSE(handlep->lh_vp, flag | FKLYR, 1, (offset_t)0, cr); 1663*0Sstevel@tonic-gate 1664*0Sstevel@tonic-gate LDI_OPENCLOSE((CE_WARN, "%s: lh=0x%p", "ldi close", (void *)lh)); 1665*0Sstevel@tonic-gate 1666*0Sstevel@tonic-gate /* 1667*0Sstevel@tonic-gate * Free the handle even if the device close failed. why? 1668*0Sstevel@tonic-gate * 1669*0Sstevel@tonic-gate * If the device close failed we can't really make assumptions 1670*0Sstevel@tonic-gate * about the devices state so we shouldn't allow access to the 1671*0Sstevel@tonic-gate * device via this handle any more. If the device consumer wants 1672*0Sstevel@tonic-gate * to access the device again they should open it again. 1673*0Sstevel@tonic-gate * 1674*0Sstevel@tonic-gate * This is the same way file/device close failures are handled 1675*0Sstevel@tonic-gate * in other places like spec_close() and closeandsetf(). 1676*0Sstevel@tonic-gate */ 1677*0Sstevel@tonic-gate handle_release(handlep); 1678*0Sstevel@tonic-gate return (err); 1679*0Sstevel@tonic-gate } 1680*0Sstevel@tonic-gate 1681*0Sstevel@tonic-gate int 1682*0Sstevel@tonic-gate ldi_read(ldi_handle_t lh, struct uio *uiop, cred_t *credp) 1683*0Sstevel@tonic-gate { 1684*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1685*0Sstevel@tonic-gate vnode_t *vp; 1686*0Sstevel@tonic-gate dev_t dev; 1687*0Sstevel@tonic-gate int ret; 1688*0Sstevel@tonic-gate 1689*0Sstevel@tonic-gate if (lh == NULL) 1690*0Sstevel@tonic-gate return (EINVAL); 1691*0Sstevel@tonic-gate 1692*0Sstevel@tonic-gate vp = handlep->lh_vp; 1693*0Sstevel@tonic-gate dev = vp->v_rdev; 1694*0Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1695*0Sstevel@tonic-gate ret = cdev_read(dev, uiop, credp); 1696*0Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 1697*0Sstevel@tonic-gate ret = strread(vp, uiop, credp); 1698*0Sstevel@tonic-gate } else { 1699*0Sstevel@tonic-gate return (ENOTSUP); 1700*0Sstevel@tonic-gate } 1701*0Sstevel@tonic-gate return (ret); 1702*0Sstevel@tonic-gate } 1703*0Sstevel@tonic-gate 1704*0Sstevel@tonic-gate int 1705*0Sstevel@tonic-gate ldi_write(ldi_handle_t lh, struct uio *uiop, cred_t *credp) 1706*0Sstevel@tonic-gate { 1707*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1708*0Sstevel@tonic-gate vnode_t *vp; 1709*0Sstevel@tonic-gate dev_t dev; 1710*0Sstevel@tonic-gate int ret; 1711*0Sstevel@tonic-gate 1712*0Sstevel@tonic-gate if (lh == NULL) 1713*0Sstevel@tonic-gate return (EINVAL); 1714*0Sstevel@tonic-gate 1715*0Sstevel@tonic-gate vp = handlep->lh_vp; 1716*0Sstevel@tonic-gate dev = vp->v_rdev; 1717*0Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1718*0Sstevel@tonic-gate ret = cdev_write(dev, uiop, credp); 1719*0Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 1720*0Sstevel@tonic-gate ret = strwrite(vp, uiop, credp); 1721*0Sstevel@tonic-gate } else { 1722*0Sstevel@tonic-gate return (ENOTSUP); 1723*0Sstevel@tonic-gate } 1724*0Sstevel@tonic-gate return (ret); 1725*0Sstevel@tonic-gate } 1726*0Sstevel@tonic-gate 1727*0Sstevel@tonic-gate int 1728*0Sstevel@tonic-gate ldi_get_size(ldi_handle_t lh, uint64_t *sizep) 1729*0Sstevel@tonic-gate { 1730*0Sstevel@tonic-gate int otyp; 1731*0Sstevel@tonic-gate uint_t value; 1732*0Sstevel@tonic-gate int64_t drv_prop64; 1733*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1734*0Sstevel@tonic-gate 1735*0Sstevel@tonic-gate 1736*0Sstevel@tonic-gate if ((lh == NULL) || (sizep == NULL)) 1737*0Sstevel@tonic-gate return (DDI_FAILURE); 1738*0Sstevel@tonic-gate 1739*0Sstevel@tonic-gate if (handlep->lh_type & LH_STREAM) 1740*0Sstevel@tonic-gate return (DDI_FAILURE); 1741*0Sstevel@tonic-gate 1742*0Sstevel@tonic-gate /* 1743*0Sstevel@tonic-gate * Determine device type (char or block). 1744*0Sstevel@tonic-gate * Character devices support Size/size 1745*0Sstevel@tonic-gate * property value. Block devices may support 1746*0Sstevel@tonic-gate * Nblocks/nblocks or Size/size property value. 1747*0Sstevel@tonic-gate */ 1748*0Sstevel@tonic-gate if ((ldi_get_otyp(lh, &otyp)) != 0) 1749*0Sstevel@tonic-gate return (DDI_FAILURE); 1750*0Sstevel@tonic-gate 1751*0Sstevel@tonic-gate if (otyp == OTYP_BLK) { 1752*0Sstevel@tonic-gate if (ldi_prop_exists(lh, 1753*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "Nblocks")) { 1754*0Sstevel@tonic-gate 1755*0Sstevel@tonic-gate drv_prop64 = ldi_prop_get_int64(lh, 1756*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1757*0Sstevel@tonic-gate "Nblocks", 0); 1758*0Sstevel@tonic-gate *sizep = (uint64_t)ldbtob((uint64_t)drv_prop64); 1759*0Sstevel@tonic-gate return (DDI_SUCCESS); 1760*0Sstevel@tonic-gate } 1761*0Sstevel@tonic-gate 1762*0Sstevel@tonic-gate if (ldi_prop_exists(lh, 1763*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "nblocks")) { 1764*0Sstevel@tonic-gate 1765*0Sstevel@tonic-gate value = ldi_prop_get_int(lh, 1766*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1767*0Sstevel@tonic-gate "nblocks", 0); 1768*0Sstevel@tonic-gate *sizep = (uint64_t)ldbtob(value); 1769*0Sstevel@tonic-gate return (DDI_SUCCESS); 1770*0Sstevel@tonic-gate } 1771*0Sstevel@tonic-gate } 1772*0Sstevel@tonic-gate 1773*0Sstevel@tonic-gate if (ldi_prop_exists(lh, 1774*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "Size")) { 1775*0Sstevel@tonic-gate 1776*0Sstevel@tonic-gate drv_prop64 = ldi_prop_get_int64(lh, 1777*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "Size", 0); 1778*0Sstevel@tonic-gate *sizep = (uint64_t)drv_prop64; 1779*0Sstevel@tonic-gate return (DDI_SUCCESS); 1780*0Sstevel@tonic-gate } 1781*0Sstevel@tonic-gate 1782*0Sstevel@tonic-gate if (ldi_prop_exists(lh, 1783*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "size")) { 1784*0Sstevel@tonic-gate 1785*0Sstevel@tonic-gate value = ldi_prop_get_int(lh, 1786*0Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "size", 0); 1787*0Sstevel@tonic-gate *sizep = (uint64_t)value; 1788*0Sstevel@tonic-gate return (DDI_SUCCESS); 1789*0Sstevel@tonic-gate } 1790*0Sstevel@tonic-gate 1791*0Sstevel@tonic-gate /* unable to determine device size */ 1792*0Sstevel@tonic-gate return (DDI_FAILURE); 1793*0Sstevel@tonic-gate } 1794*0Sstevel@tonic-gate 1795*0Sstevel@tonic-gate int 1796*0Sstevel@tonic-gate ldi_ioctl(ldi_handle_t lh, int cmd, intptr_t arg, int mode, 1797*0Sstevel@tonic-gate cred_t *cr, int *rvalp) 1798*0Sstevel@tonic-gate { 1799*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1800*0Sstevel@tonic-gate vnode_t *vp; 1801*0Sstevel@tonic-gate dev_t dev; 1802*0Sstevel@tonic-gate int ret, copymode; 1803*0Sstevel@tonic-gate 1804*0Sstevel@tonic-gate if (lh == NULL) 1805*0Sstevel@tonic-gate return (EINVAL); 1806*0Sstevel@tonic-gate 1807*0Sstevel@tonic-gate /* 1808*0Sstevel@tonic-gate * if the data pointed to by arg is located in the kernel then 1809*0Sstevel@tonic-gate * make sure the FNATIVE flag is set. 1810*0Sstevel@tonic-gate */ 1811*0Sstevel@tonic-gate if (mode & FKIOCTL) 1812*0Sstevel@tonic-gate mode = (mode & ~FMODELS) | FNATIVE | FKIOCTL; 1813*0Sstevel@tonic-gate 1814*0Sstevel@tonic-gate vp = handlep->lh_vp; 1815*0Sstevel@tonic-gate dev = vp->v_rdev; 1816*0Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1817*0Sstevel@tonic-gate ret = cdev_ioctl(dev, cmd, arg, mode, cr, rvalp); 1818*0Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 1819*0Sstevel@tonic-gate copymode = (mode & FKIOCTL) ? K_TO_K : U_TO_K; 1820*0Sstevel@tonic-gate 1821*0Sstevel@tonic-gate /* 1822*0Sstevel@tonic-gate * if we get an I_PLINK from within the kernel the 1823*0Sstevel@tonic-gate * arg is a layered handle pointer instead of 1824*0Sstevel@tonic-gate * a file descriptor, so we translate this ioctl 1825*0Sstevel@tonic-gate * into a private one that can handle this. 1826*0Sstevel@tonic-gate */ 1827*0Sstevel@tonic-gate if ((mode & FKIOCTL) && (cmd == I_PLINK)) 1828*0Sstevel@tonic-gate cmd = _I_PLINK_LH; 1829*0Sstevel@tonic-gate 1830*0Sstevel@tonic-gate ret = strioctl(vp, cmd, arg, mode, copymode, cr, rvalp); 1831*0Sstevel@tonic-gate } else { 1832*0Sstevel@tonic-gate return (ENOTSUP); 1833*0Sstevel@tonic-gate } 1834*0Sstevel@tonic-gate 1835*0Sstevel@tonic-gate return (ret); 1836*0Sstevel@tonic-gate } 1837*0Sstevel@tonic-gate 1838*0Sstevel@tonic-gate int 1839*0Sstevel@tonic-gate ldi_poll(ldi_handle_t lh, short events, int anyyet, short *reventsp, 1840*0Sstevel@tonic-gate struct pollhead **phpp) 1841*0Sstevel@tonic-gate { 1842*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1843*0Sstevel@tonic-gate vnode_t *vp; 1844*0Sstevel@tonic-gate dev_t dev; 1845*0Sstevel@tonic-gate int ret; 1846*0Sstevel@tonic-gate 1847*0Sstevel@tonic-gate if (lh == NULL) 1848*0Sstevel@tonic-gate return (EINVAL); 1849*0Sstevel@tonic-gate 1850*0Sstevel@tonic-gate vp = handlep->lh_vp; 1851*0Sstevel@tonic-gate dev = vp->v_rdev; 1852*0Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1853*0Sstevel@tonic-gate ret = cdev_poll(dev, events, anyyet, reventsp, phpp); 1854*0Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 1855*0Sstevel@tonic-gate ret = strpoll(vp->v_stream, events, anyyet, reventsp, phpp); 1856*0Sstevel@tonic-gate } else { 1857*0Sstevel@tonic-gate return (ENOTSUP); 1858*0Sstevel@tonic-gate } 1859*0Sstevel@tonic-gate 1860*0Sstevel@tonic-gate return (ret); 1861*0Sstevel@tonic-gate } 1862*0Sstevel@tonic-gate 1863*0Sstevel@tonic-gate int 1864*0Sstevel@tonic-gate ldi_prop_op(ldi_handle_t lh, ddi_prop_op_t prop_op, 1865*0Sstevel@tonic-gate int flags, char *name, caddr_t valuep, int *length) 1866*0Sstevel@tonic-gate { 1867*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1868*0Sstevel@tonic-gate dev_t dev; 1869*0Sstevel@tonic-gate dev_info_t *dip; 1870*0Sstevel@tonic-gate int ret; 1871*0Sstevel@tonic-gate struct snode *csp; 1872*0Sstevel@tonic-gate 1873*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 1874*0Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 1875*0Sstevel@tonic-gate 1876*0Sstevel@tonic-gate if ((prop_op != PROP_LEN) && (valuep == NULL)) 1877*0Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 1878*0Sstevel@tonic-gate 1879*0Sstevel@tonic-gate if (length == NULL) 1880*0Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 1881*0Sstevel@tonic-gate 1882*0Sstevel@tonic-gate /* 1883*0Sstevel@tonic-gate * try to find the associated dip, 1884*0Sstevel@tonic-gate * this places a hold on the driver 1885*0Sstevel@tonic-gate */ 1886*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1887*0Sstevel@tonic-gate 1888*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 1889*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 1890*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 1891*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 1892*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 1893*0Sstevel@tonic-gate if (dip == NULL) 1894*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 1895*0Sstevel@tonic-gate 1896*0Sstevel@tonic-gate if (dip == NULL) 1897*0Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 1898*0Sstevel@tonic-gate 1899*0Sstevel@tonic-gate ret = i_ldi_prop_op(dev, dip, prop_op, flags, name, valuep, length); 1900*0Sstevel@tonic-gate ddi_release_devi(dip); 1901*0Sstevel@tonic-gate 1902*0Sstevel@tonic-gate return (ret); 1903*0Sstevel@tonic-gate } 1904*0Sstevel@tonic-gate 1905*0Sstevel@tonic-gate int 1906*0Sstevel@tonic-gate ldi_strategy(ldi_handle_t lh, struct buf *bp) 1907*0Sstevel@tonic-gate { 1908*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1909*0Sstevel@tonic-gate dev_t dev; 1910*0Sstevel@tonic-gate 1911*0Sstevel@tonic-gate if ((lh == NULL) || (bp == NULL)) 1912*0Sstevel@tonic-gate return (EINVAL); 1913*0Sstevel@tonic-gate 1914*0Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1915*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1916*0Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1917*0Sstevel@tonic-gate return (ENOTSUP); 1918*0Sstevel@tonic-gate 1919*0Sstevel@tonic-gate bp->b_edev = dev; 1920*0Sstevel@tonic-gate bp->b_dev = cmpdev(dev); 1921*0Sstevel@tonic-gate return (bdev_strategy(bp)); 1922*0Sstevel@tonic-gate } 1923*0Sstevel@tonic-gate 1924*0Sstevel@tonic-gate int 1925*0Sstevel@tonic-gate ldi_dump(ldi_handle_t lh, caddr_t addr, daddr_t blkno, int nblk) 1926*0Sstevel@tonic-gate { 1927*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1928*0Sstevel@tonic-gate dev_t dev; 1929*0Sstevel@tonic-gate 1930*0Sstevel@tonic-gate if (lh == NULL) 1931*0Sstevel@tonic-gate return (EINVAL); 1932*0Sstevel@tonic-gate 1933*0Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1934*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1935*0Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1936*0Sstevel@tonic-gate return (ENOTSUP); 1937*0Sstevel@tonic-gate 1938*0Sstevel@tonic-gate return (bdev_dump(dev, addr, blkno, nblk)); 1939*0Sstevel@tonic-gate } 1940*0Sstevel@tonic-gate 1941*0Sstevel@tonic-gate int 1942*0Sstevel@tonic-gate ldi_devmap(ldi_handle_t lh, devmap_cookie_t dhp, offset_t off, 1943*0Sstevel@tonic-gate size_t len, size_t *maplen, uint_t model) 1944*0Sstevel@tonic-gate { 1945*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1946*0Sstevel@tonic-gate dev_t dev; 1947*0Sstevel@tonic-gate 1948*0Sstevel@tonic-gate if (lh == NULL) 1949*0Sstevel@tonic-gate return (EINVAL); 1950*0Sstevel@tonic-gate 1951*0Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1952*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1953*0Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1954*0Sstevel@tonic-gate return (ENOTSUP); 1955*0Sstevel@tonic-gate 1956*0Sstevel@tonic-gate return (cdev_devmap(dev, dhp, off, len, maplen, model)); 1957*0Sstevel@tonic-gate } 1958*0Sstevel@tonic-gate 1959*0Sstevel@tonic-gate int 1960*0Sstevel@tonic-gate ldi_aread(ldi_handle_t lh, struct aio_req *aio_reqp, cred_t *cr) 1961*0Sstevel@tonic-gate { 1962*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1963*0Sstevel@tonic-gate dev_t dev; 1964*0Sstevel@tonic-gate struct cb_ops *cb; 1965*0Sstevel@tonic-gate 1966*0Sstevel@tonic-gate if (lh == NULL) 1967*0Sstevel@tonic-gate return (EINVAL); 1968*0Sstevel@tonic-gate 1969*0Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1970*0Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1971*0Sstevel@tonic-gate return (ENOTSUP); 1972*0Sstevel@tonic-gate 1973*0Sstevel@tonic-gate /* 1974*0Sstevel@tonic-gate * Kaio is only supported on block devices. 1975*0Sstevel@tonic-gate */ 1976*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1977*0Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops; 1978*0Sstevel@tonic-gate if (cb->cb_strategy == nodev || cb->cb_strategy == NULL) 1979*0Sstevel@tonic-gate return (ENOTSUP); 1980*0Sstevel@tonic-gate 1981*0Sstevel@tonic-gate if (cb->cb_aread == NULL) 1982*0Sstevel@tonic-gate return (ENOTSUP); 1983*0Sstevel@tonic-gate 1984*0Sstevel@tonic-gate return (cb->cb_aread(dev, aio_reqp, cr)); 1985*0Sstevel@tonic-gate } 1986*0Sstevel@tonic-gate 1987*0Sstevel@tonic-gate int 1988*0Sstevel@tonic-gate ldi_awrite(ldi_handle_t lh, struct aio_req *aio_reqp, cred_t *cr) 1989*0Sstevel@tonic-gate { 1990*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1991*0Sstevel@tonic-gate struct cb_ops *cb; 1992*0Sstevel@tonic-gate dev_t dev; 1993*0Sstevel@tonic-gate 1994*0Sstevel@tonic-gate if (lh == NULL) 1995*0Sstevel@tonic-gate return (EINVAL); 1996*0Sstevel@tonic-gate 1997*0Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1998*0Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1999*0Sstevel@tonic-gate return (ENOTSUP); 2000*0Sstevel@tonic-gate 2001*0Sstevel@tonic-gate /* 2002*0Sstevel@tonic-gate * Kaio is only supported on block devices. 2003*0Sstevel@tonic-gate */ 2004*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2005*0Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops; 2006*0Sstevel@tonic-gate if (cb->cb_strategy == nodev || cb->cb_strategy == NULL) 2007*0Sstevel@tonic-gate return (ENOTSUP); 2008*0Sstevel@tonic-gate 2009*0Sstevel@tonic-gate if (cb->cb_awrite == NULL) 2010*0Sstevel@tonic-gate return (ENOTSUP); 2011*0Sstevel@tonic-gate 2012*0Sstevel@tonic-gate return (cb->cb_awrite(dev, aio_reqp, cr)); 2013*0Sstevel@tonic-gate } 2014*0Sstevel@tonic-gate 2015*0Sstevel@tonic-gate int 2016*0Sstevel@tonic-gate ldi_putmsg(ldi_handle_t lh, mblk_t *smp) 2017*0Sstevel@tonic-gate { 2018*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2019*0Sstevel@tonic-gate int ret; 2020*0Sstevel@tonic-gate 2021*0Sstevel@tonic-gate if ((lh == NULL) || (smp == NULL)) 2022*0Sstevel@tonic-gate return (EINVAL); 2023*0Sstevel@tonic-gate 2024*0Sstevel@tonic-gate if (!(handlep->lh_type & LH_STREAM)) { 2025*0Sstevel@tonic-gate freemsg(smp); 2026*0Sstevel@tonic-gate return (ENOTSUP); 2027*0Sstevel@tonic-gate } 2028*0Sstevel@tonic-gate 2029*0Sstevel@tonic-gate /* Send message while honoring flow control */ 2030*0Sstevel@tonic-gate ret = kstrputmsg(handlep->lh_vp, smp, NULL, 0, 0, 2031*0Sstevel@tonic-gate MSG_BAND | MSG_HOLDSIG | MSG_IGNERROR, 0); 2032*0Sstevel@tonic-gate 2033*0Sstevel@tonic-gate return (ret); 2034*0Sstevel@tonic-gate } 2035*0Sstevel@tonic-gate 2036*0Sstevel@tonic-gate int 2037*0Sstevel@tonic-gate ldi_getmsg(ldi_handle_t lh, mblk_t **rmp, timestruc_t *timeo) 2038*0Sstevel@tonic-gate { 2039*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2040*0Sstevel@tonic-gate clock_t timout; /* milliseconds */ 2041*0Sstevel@tonic-gate uchar_t pri; 2042*0Sstevel@tonic-gate rval_t rval; 2043*0Sstevel@tonic-gate int ret, pflag; 2044*0Sstevel@tonic-gate 2045*0Sstevel@tonic-gate 2046*0Sstevel@tonic-gate if (lh == NULL) 2047*0Sstevel@tonic-gate return (EINVAL); 2048*0Sstevel@tonic-gate 2049*0Sstevel@tonic-gate if (!(handlep->lh_type & LH_STREAM)) 2050*0Sstevel@tonic-gate return (ENOTSUP); 2051*0Sstevel@tonic-gate 2052*0Sstevel@tonic-gate /* Convert from nanoseconds to milliseconds */ 2053*0Sstevel@tonic-gate if (timeo != NULL) { 2054*0Sstevel@tonic-gate timout = timeo->tv_sec * 1000 + timeo->tv_nsec / 1000000; 2055*0Sstevel@tonic-gate if (timout > INT_MAX) 2056*0Sstevel@tonic-gate return (EINVAL); 2057*0Sstevel@tonic-gate } else 2058*0Sstevel@tonic-gate timout = -1; 2059*0Sstevel@tonic-gate 2060*0Sstevel@tonic-gate /* Wait for timeout millseconds for a message */ 2061*0Sstevel@tonic-gate pflag = MSG_ANY; 2062*0Sstevel@tonic-gate pri = 0; 2063*0Sstevel@tonic-gate *rmp = NULL; 2064*0Sstevel@tonic-gate ret = kstrgetmsg(handlep->lh_vp, 2065*0Sstevel@tonic-gate rmp, NULL, &pri, &pflag, timout, &rval); 2066*0Sstevel@tonic-gate return (ret); 2067*0Sstevel@tonic-gate } 2068*0Sstevel@tonic-gate 2069*0Sstevel@tonic-gate int 2070*0Sstevel@tonic-gate ldi_get_dev(ldi_handle_t lh, dev_t *devp) 2071*0Sstevel@tonic-gate { 2072*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2073*0Sstevel@tonic-gate 2074*0Sstevel@tonic-gate if ((lh == NULL) || (devp == NULL)) 2075*0Sstevel@tonic-gate return (EINVAL); 2076*0Sstevel@tonic-gate 2077*0Sstevel@tonic-gate *devp = handlep->lh_vp->v_rdev; 2078*0Sstevel@tonic-gate return (0); 2079*0Sstevel@tonic-gate } 2080*0Sstevel@tonic-gate 2081*0Sstevel@tonic-gate int 2082*0Sstevel@tonic-gate ldi_get_otyp(ldi_handle_t lh, int *otyp) 2083*0Sstevel@tonic-gate { 2084*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2085*0Sstevel@tonic-gate 2086*0Sstevel@tonic-gate if ((lh == NULL) || (otyp == NULL)) 2087*0Sstevel@tonic-gate return (EINVAL); 2088*0Sstevel@tonic-gate 2089*0Sstevel@tonic-gate *otyp = VTYP_TO_OTYP(handlep->lh_vp->v_type); 2090*0Sstevel@tonic-gate return (0); 2091*0Sstevel@tonic-gate } 2092*0Sstevel@tonic-gate 2093*0Sstevel@tonic-gate int 2094*0Sstevel@tonic-gate ldi_get_devid(ldi_handle_t lh, ddi_devid_t *devid) 2095*0Sstevel@tonic-gate { 2096*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2097*0Sstevel@tonic-gate int ret; 2098*0Sstevel@tonic-gate dev_t dev; 2099*0Sstevel@tonic-gate 2100*0Sstevel@tonic-gate if ((lh == NULL) || (devid == NULL)) 2101*0Sstevel@tonic-gate return (EINVAL); 2102*0Sstevel@tonic-gate 2103*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2104*0Sstevel@tonic-gate 2105*0Sstevel@tonic-gate ret = ddi_lyr_get_devid(dev, devid); 2106*0Sstevel@tonic-gate if (ret != DDI_SUCCESS) 2107*0Sstevel@tonic-gate return (ENOTSUP); 2108*0Sstevel@tonic-gate 2109*0Sstevel@tonic-gate return (0); 2110*0Sstevel@tonic-gate } 2111*0Sstevel@tonic-gate 2112*0Sstevel@tonic-gate int 2113*0Sstevel@tonic-gate ldi_get_minor_name(ldi_handle_t lh, char **minor_name) 2114*0Sstevel@tonic-gate { 2115*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2116*0Sstevel@tonic-gate int ret, otyp; 2117*0Sstevel@tonic-gate dev_t dev; 2118*0Sstevel@tonic-gate 2119*0Sstevel@tonic-gate if ((lh == NULL) || (minor_name == NULL)) 2120*0Sstevel@tonic-gate return (EINVAL); 2121*0Sstevel@tonic-gate 2122*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2123*0Sstevel@tonic-gate otyp = VTYP_TO_OTYP(handlep->lh_vp->v_type); 2124*0Sstevel@tonic-gate 2125*0Sstevel@tonic-gate ret = ddi_lyr_get_minor_name(dev, OTYP_TO_STYP(otyp), minor_name); 2126*0Sstevel@tonic-gate if (ret != DDI_SUCCESS) 2127*0Sstevel@tonic-gate return (ENOTSUP); 2128*0Sstevel@tonic-gate 2129*0Sstevel@tonic-gate return (0); 2130*0Sstevel@tonic-gate } 2131*0Sstevel@tonic-gate 2132*0Sstevel@tonic-gate int 2133*0Sstevel@tonic-gate ldi_prop_lookup_int_array(ldi_handle_t lh, 2134*0Sstevel@tonic-gate uint_t flags, char *name, int **data, uint_t *nelements) 2135*0Sstevel@tonic-gate { 2136*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2137*0Sstevel@tonic-gate dev_info_t *dip; 2138*0Sstevel@tonic-gate dev_t dev; 2139*0Sstevel@tonic-gate int res; 2140*0Sstevel@tonic-gate struct snode *csp; 2141*0Sstevel@tonic-gate 2142*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2143*0Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2144*0Sstevel@tonic-gate 2145*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2146*0Sstevel@tonic-gate 2147*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2148*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2149*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2150*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2151*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2152*0Sstevel@tonic-gate if (dip == NULL) 2153*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2154*0Sstevel@tonic-gate 2155*0Sstevel@tonic-gate if (dip == NULL) { 2156*0Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2157*0Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2158*0Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2159*0Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2160*0Sstevel@tonic-gate } 2161*0Sstevel@tonic-gate 2162*0Sstevel@tonic-gate if (dip != NULL) { 2163*0Sstevel@tonic-gate int *prop_val, prop_len; 2164*0Sstevel@tonic-gate 2165*0Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2166*0Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, sizeof (int)); 2167*0Sstevel@tonic-gate 2168*0Sstevel@tonic-gate /* if we got it then return it */ 2169*0Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2170*0Sstevel@tonic-gate *nelements = prop_len / sizeof (int); 2171*0Sstevel@tonic-gate *data = prop_val; 2172*0Sstevel@tonic-gate 2173*0Sstevel@tonic-gate ddi_release_devi(dip); 2174*0Sstevel@tonic-gate return (res); 2175*0Sstevel@tonic-gate } 2176*0Sstevel@tonic-gate } 2177*0Sstevel@tonic-gate 2178*0Sstevel@tonic-gate /* call the normal property interfaces */ 2179*0Sstevel@tonic-gate res = ddi_prop_lookup_int_array(dev, dip, flags, 2180*0Sstevel@tonic-gate name, data, nelements); 2181*0Sstevel@tonic-gate 2182*0Sstevel@tonic-gate if (dip != NULL) 2183*0Sstevel@tonic-gate ddi_release_devi(dip); 2184*0Sstevel@tonic-gate 2185*0Sstevel@tonic-gate return (res); 2186*0Sstevel@tonic-gate } 2187*0Sstevel@tonic-gate 2188*0Sstevel@tonic-gate int 2189*0Sstevel@tonic-gate ldi_prop_lookup_int64_array(ldi_handle_t lh, 2190*0Sstevel@tonic-gate uint_t flags, char *name, int64_t **data, uint_t *nelements) 2191*0Sstevel@tonic-gate { 2192*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2193*0Sstevel@tonic-gate dev_info_t *dip; 2194*0Sstevel@tonic-gate dev_t dev; 2195*0Sstevel@tonic-gate int res; 2196*0Sstevel@tonic-gate struct snode *csp; 2197*0Sstevel@tonic-gate 2198*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2199*0Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2200*0Sstevel@tonic-gate 2201*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2202*0Sstevel@tonic-gate 2203*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2204*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2205*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2206*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2207*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2208*0Sstevel@tonic-gate if (dip == NULL) 2209*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2210*0Sstevel@tonic-gate 2211*0Sstevel@tonic-gate if (dip == NULL) { 2212*0Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2213*0Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2214*0Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2215*0Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2216*0Sstevel@tonic-gate } 2217*0Sstevel@tonic-gate 2218*0Sstevel@tonic-gate if (dip != NULL) { 2219*0Sstevel@tonic-gate int64_t *prop_val; 2220*0Sstevel@tonic-gate int prop_len; 2221*0Sstevel@tonic-gate 2222*0Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2223*0Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, sizeof (int64_t)); 2224*0Sstevel@tonic-gate 2225*0Sstevel@tonic-gate /* if we got it then return it */ 2226*0Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2227*0Sstevel@tonic-gate *nelements = prop_len / sizeof (int64_t); 2228*0Sstevel@tonic-gate *data = prop_val; 2229*0Sstevel@tonic-gate 2230*0Sstevel@tonic-gate ddi_release_devi(dip); 2231*0Sstevel@tonic-gate return (res); 2232*0Sstevel@tonic-gate } 2233*0Sstevel@tonic-gate } 2234*0Sstevel@tonic-gate 2235*0Sstevel@tonic-gate /* call the normal property interfaces */ 2236*0Sstevel@tonic-gate res = ddi_prop_lookup_int64_array(dev, dip, flags, 2237*0Sstevel@tonic-gate name, data, nelements); 2238*0Sstevel@tonic-gate 2239*0Sstevel@tonic-gate if (dip != NULL) 2240*0Sstevel@tonic-gate ddi_release_devi(dip); 2241*0Sstevel@tonic-gate 2242*0Sstevel@tonic-gate return (res); 2243*0Sstevel@tonic-gate } 2244*0Sstevel@tonic-gate 2245*0Sstevel@tonic-gate int 2246*0Sstevel@tonic-gate ldi_prop_lookup_string_array(ldi_handle_t lh, 2247*0Sstevel@tonic-gate uint_t flags, char *name, char ***data, uint_t *nelements) 2248*0Sstevel@tonic-gate { 2249*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2250*0Sstevel@tonic-gate dev_info_t *dip; 2251*0Sstevel@tonic-gate dev_t dev; 2252*0Sstevel@tonic-gate int res; 2253*0Sstevel@tonic-gate struct snode *csp; 2254*0Sstevel@tonic-gate 2255*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2256*0Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2257*0Sstevel@tonic-gate 2258*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2259*0Sstevel@tonic-gate 2260*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2261*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2262*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2263*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2264*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2265*0Sstevel@tonic-gate if (dip == NULL) 2266*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2267*0Sstevel@tonic-gate 2268*0Sstevel@tonic-gate if (dip == NULL) { 2269*0Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2270*0Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2271*0Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2272*0Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2273*0Sstevel@tonic-gate } 2274*0Sstevel@tonic-gate 2275*0Sstevel@tonic-gate if (dip != NULL) { 2276*0Sstevel@tonic-gate char *prop_val; 2277*0Sstevel@tonic-gate int prop_len; 2278*0Sstevel@tonic-gate 2279*0Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2280*0Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, 0); 2281*0Sstevel@tonic-gate 2282*0Sstevel@tonic-gate /* if we got it then return it */ 2283*0Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2284*0Sstevel@tonic-gate char **str_array; 2285*0Sstevel@tonic-gate int nelem; 2286*0Sstevel@tonic-gate 2287*0Sstevel@tonic-gate /* 2288*0Sstevel@tonic-gate * pack the returned string array into the format 2289*0Sstevel@tonic-gate * our callers expect 2290*0Sstevel@tonic-gate */ 2291*0Sstevel@tonic-gate if (i_pack_string_array(prop_val, prop_len, 2292*0Sstevel@tonic-gate &str_array, &nelem) == 0) { 2293*0Sstevel@tonic-gate 2294*0Sstevel@tonic-gate *data = str_array; 2295*0Sstevel@tonic-gate *nelements = nelem; 2296*0Sstevel@tonic-gate 2297*0Sstevel@tonic-gate ddi_prop_free(prop_val); 2298*0Sstevel@tonic-gate ddi_release_devi(dip); 2299*0Sstevel@tonic-gate return (res); 2300*0Sstevel@tonic-gate } 2301*0Sstevel@tonic-gate 2302*0Sstevel@tonic-gate /* 2303*0Sstevel@tonic-gate * the format of the returned property must have 2304*0Sstevel@tonic-gate * been bad so throw it out 2305*0Sstevel@tonic-gate */ 2306*0Sstevel@tonic-gate ddi_prop_free(prop_val); 2307*0Sstevel@tonic-gate } 2308*0Sstevel@tonic-gate } 2309*0Sstevel@tonic-gate 2310*0Sstevel@tonic-gate /* call the normal property interfaces */ 2311*0Sstevel@tonic-gate res = ddi_prop_lookup_string_array(dev, dip, flags, 2312*0Sstevel@tonic-gate name, data, nelements); 2313*0Sstevel@tonic-gate 2314*0Sstevel@tonic-gate if (dip != NULL) 2315*0Sstevel@tonic-gate ddi_release_devi(dip); 2316*0Sstevel@tonic-gate 2317*0Sstevel@tonic-gate return (res); 2318*0Sstevel@tonic-gate } 2319*0Sstevel@tonic-gate 2320*0Sstevel@tonic-gate int 2321*0Sstevel@tonic-gate ldi_prop_lookup_string(ldi_handle_t lh, 2322*0Sstevel@tonic-gate uint_t flags, char *name, char **data) 2323*0Sstevel@tonic-gate { 2324*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2325*0Sstevel@tonic-gate dev_info_t *dip; 2326*0Sstevel@tonic-gate dev_t dev; 2327*0Sstevel@tonic-gate int res; 2328*0Sstevel@tonic-gate struct snode *csp; 2329*0Sstevel@tonic-gate 2330*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2331*0Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2332*0Sstevel@tonic-gate 2333*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2334*0Sstevel@tonic-gate 2335*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2336*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2337*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2338*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2339*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2340*0Sstevel@tonic-gate if (dip == NULL) 2341*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2342*0Sstevel@tonic-gate 2343*0Sstevel@tonic-gate if (dip == NULL) { 2344*0Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2345*0Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2346*0Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2347*0Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2348*0Sstevel@tonic-gate } 2349*0Sstevel@tonic-gate 2350*0Sstevel@tonic-gate if (dip != NULL) { 2351*0Sstevel@tonic-gate char *prop_val; 2352*0Sstevel@tonic-gate int prop_len; 2353*0Sstevel@tonic-gate 2354*0Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2355*0Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, 0); 2356*0Sstevel@tonic-gate 2357*0Sstevel@tonic-gate /* if we got it then return it */ 2358*0Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2359*0Sstevel@tonic-gate /* 2360*0Sstevel@tonic-gate * sanity check the vaule returned. 2361*0Sstevel@tonic-gate */ 2362*0Sstevel@tonic-gate if (i_check_string(prop_val, prop_len)) { 2363*0Sstevel@tonic-gate ddi_prop_free(prop_val); 2364*0Sstevel@tonic-gate } else { 2365*0Sstevel@tonic-gate *data = prop_val; 2366*0Sstevel@tonic-gate ddi_release_devi(dip); 2367*0Sstevel@tonic-gate return (res); 2368*0Sstevel@tonic-gate } 2369*0Sstevel@tonic-gate } 2370*0Sstevel@tonic-gate } 2371*0Sstevel@tonic-gate 2372*0Sstevel@tonic-gate /* call the normal property interfaces */ 2373*0Sstevel@tonic-gate res = ddi_prop_lookup_string(dev, dip, flags, name, data); 2374*0Sstevel@tonic-gate 2375*0Sstevel@tonic-gate if (dip != NULL) 2376*0Sstevel@tonic-gate ddi_release_devi(dip); 2377*0Sstevel@tonic-gate 2378*0Sstevel@tonic-gate #ifdef DEBUG 2379*0Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2380*0Sstevel@tonic-gate /* 2381*0Sstevel@tonic-gate * keep ourselves honest 2382*0Sstevel@tonic-gate * make sure the framework returns strings in the 2383*0Sstevel@tonic-gate * same format as we're demanding from drivers. 2384*0Sstevel@tonic-gate */ 2385*0Sstevel@tonic-gate struct prop_driver_data *pdd; 2386*0Sstevel@tonic-gate int pdd_prop_size; 2387*0Sstevel@tonic-gate 2388*0Sstevel@tonic-gate pdd = ((struct prop_driver_data *)(*data)) - 1; 2389*0Sstevel@tonic-gate pdd_prop_size = pdd->pdd_size - 2390*0Sstevel@tonic-gate sizeof (struct prop_driver_data); 2391*0Sstevel@tonic-gate ASSERT(i_check_string(*data, pdd_prop_size) == 0); 2392*0Sstevel@tonic-gate } 2393*0Sstevel@tonic-gate #endif /* DEBUG */ 2394*0Sstevel@tonic-gate 2395*0Sstevel@tonic-gate return (res); 2396*0Sstevel@tonic-gate } 2397*0Sstevel@tonic-gate 2398*0Sstevel@tonic-gate int 2399*0Sstevel@tonic-gate ldi_prop_lookup_byte_array(ldi_handle_t lh, 2400*0Sstevel@tonic-gate uint_t flags, char *name, uchar_t **data, uint_t *nelements) 2401*0Sstevel@tonic-gate { 2402*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2403*0Sstevel@tonic-gate dev_info_t *dip; 2404*0Sstevel@tonic-gate dev_t dev; 2405*0Sstevel@tonic-gate int res; 2406*0Sstevel@tonic-gate struct snode *csp; 2407*0Sstevel@tonic-gate 2408*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2409*0Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2410*0Sstevel@tonic-gate 2411*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2412*0Sstevel@tonic-gate 2413*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2414*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2415*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2416*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2417*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2418*0Sstevel@tonic-gate if (dip == NULL) 2419*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2420*0Sstevel@tonic-gate 2421*0Sstevel@tonic-gate if (dip == NULL) { 2422*0Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2423*0Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2424*0Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2425*0Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2426*0Sstevel@tonic-gate } 2427*0Sstevel@tonic-gate 2428*0Sstevel@tonic-gate if (dip != NULL) { 2429*0Sstevel@tonic-gate uchar_t *prop_val; 2430*0Sstevel@tonic-gate int prop_len; 2431*0Sstevel@tonic-gate 2432*0Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2433*0Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, sizeof (uchar_t)); 2434*0Sstevel@tonic-gate 2435*0Sstevel@tonic-gate /* if we got it then return it */ 2436*0Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2437*0Sstevel@tonic-gate *nelements = prop_len / sizeof (uchar_t); 2438*0Sstevel@tonic-gate *data = prop_val; 2439*0Sstevel@tonic-gate 2440*0Sstevel@tonic-gate ddi_release_devi(dip); 2441*0Sstevel@tonic-gate return (res); 2442*0Sstevel@tonic-gate } 2443*0Sstevel@tonic-gate } 2444*0Sstevel@tonic-gate 2445*0Sstevel@tonic-gate /* call the normal property interfaces */ 2446*0Sstevel@tonic-gate res = ddi_prop_lookup_byte_array(dev, dip, flags, 2447*0Sstevel@tonic-gate name, data, nelements); 2448*0Sstevel@tonic-gate 2449*0Sstevel@tonic-gate if (dip != NULL) 2450*0Sstevel@tonic-gate ddi_release_devi(dip); 2451*0Sstevel@tonic-gate 2452*0Sstevel@tonic-gate return (res); 2453*0Sstevel@tonic-gate } 2454*0Sstevel@tonic-gate 2455*0Sstevel@tonic-gate int 2456*0Sstevel@tonic-gate ldi_prop_get_int(ldi_handle_t lh, 2457*0Sstevel@tonic-gate uint_t flags, char *name, int defvalue) 2458*0Sstevel@tonic-gate { 2459*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2460*0Sstevel@tonic-gate dev_info_t *dip; 2461*0Sstevel@tonic-gate dev_t dev; 2462*0Sstevel@tonic-gate int res; 2463*0Sstevel@tonic-gate struct snode *csp; 2464*0Sstevel@tonic-gate 2465*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2466*0Sstevel@tonic-gate return (defvalue); 2467*0Sstevel@tonic-gate 2468*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2469*0Sstevel@tonic-gate 2470*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2471*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2472*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2473*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2474*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2475*0Sstevel@tonic-gate if (dip == NULL) 2476*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2477*0Sstevel@tonic-gate 2478*0Sstevel@tonic-gate if (dip == NULL) { 2479*0Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2480*0Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2481*0Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2482*0Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2483*0Sstevel@tonic-gate } 2484*0Sstevel@tonic-gate 2485*0Sstevel@tonic-gate if (dip != NULL) { 2486*0Sstevel@tonic-gate int prop_val; 2487*0Sstevel@tonic-gate int prop_len; 2488*0Sstevel@tonic-gate 2489*0Sstevel@tonic-gate /* 2490*0Sstevel@tonic-gate * first call the drivers prop_op interface to allow it 2491*0Sstevel@tonic-gate * it to override default property values. 2492*0Sstevel@tonic-gate */ 2493*0Sstevel@tonic-gate prop_len = sizeof (int); 2494*0Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN_AND_VAL_BUF, 2495*0Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, 2496*0Sstevel@tonic-gate (caddr_t)&prop_val, &prop_len); 2497*0Sstevel@tonic-gate 2498*0Sstevel@tonic-gate /* if we got it then return it */ 2499*0Sstevel@tonic-gate if ((res == DDI_PROP_SUCCESS) && 2500*0Sstevel@tonic-gate (prop_len == sizeof (int))) { 2501*0Sstevel@tonic-gate res = prop_val; 2502*0Sstevel@tonic-gate ddi_release_devi(dip); 2503*0Sstevel@tonic-gate return (res); 2504*0Sstevel@tonic-gate } 2505*0Sstevel@tonic-gate } 2506*0Sstevel@tonic-gate 2507*0Sstevel@tonic-gate /* call the normal property interfaces */ 2508*0Sstevel@tonic-gate res = ddi_prop_get_int(dev, dip, flags, name, defvalue); 2509*0Sstevel@tonic-gate 2510*0Sstevel@tonic-gate if (dip != NULL) 2511*0Sstevel@tonic-gate ddi_release_devi(dip); 2512*0Sstevel@tonic-gate 2513*0Sstevel@tonic-gate return (res); 2514*0Sstevel@tonic-gate } 2515*0Sstevel@tonic-gate 2516*0Sstevel@tonic-gate int64_t 2517*0Sstevel@tonic-gate ldi_prop_get_int64(ldi_handle_t lh, 2518*0Sstevel@tonic-gate uint_t flags, char *name, int64_t defvalue) 2519*0Sstevel@tonic-gate { 2520*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2521*0Sstevel@tonic-gate dev_info_t *dip; 2522*0Sstevel@tonic-gate dev_t dev; 2523*0Sstevel@tonic-gate int64_t res; 2524*0Sstevel@tonic-gate struct snode *csp; 2525*0Sstevel@tonic-gate 2526*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2527*0Sstevel@tonic-gate return (defvalue); 2528*0Sstevel@tonic-gate 2529*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2530*0Sstevel@tonic-gate 2531*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2532*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2533*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2534*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2535*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2536*0Sstevel@tonic-gate if (dip == NULL) 2537*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2538*0Sstevel@tonic-gate 2539*0Sstevel@tonic-gate if (dip == NULL) { 2540*0Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2541*0Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2542*0Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2543*0Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2544*0Sstevel@tonic-gate } 2545*0Sstevel@tonic-gate 2546*0Sstevel@tonic-gate if (dip != NULL) { 2547*0Sstevel@tonic-gate int64_t prop_val; 2548*0Sstevel@tonic-gate int prop_len; 2549*0Sstevel@tonic-gate 2550*0Sstevel@tonic-gate /* 2551*0Sstevel@tonic-gate * first call the drivers prop_op interface to allow it 2552*0Sstevel@tonic-gate * it to override default property values. 2553*0Sstevel@tonic-gate */ 2554*0Sstevel@tonic-gate prop_len = sizeof (int64_t); 2555*0Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN_AND_VAL_BUF, 2556*0Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, 2557*0Sstevel@tonic-gate (caddr_t)&prop_val, &prop_len); 2558*0Sstevel@tonic-gate 2559*0Sstevel@tonic-gate /* if we got it then return it */ 2560*0Sstevel@tonic-gate if ((res == DDI_PROP_SUCCESS) && 2561*0Sstevel@tonic-gate (prop_len == sizeof (int64_t))) { 2562*0Sstevel@tonic-gate res = prop_val; 2563*0Sstevel@tonic-gate ddi_release_devi(dip); 2564*0Sstevel@tonic-gate return (res); 2565*0Sstevel@tonic-gate } 2566*0Sstevel@tonic-gate } 2567*0Sstevel@tonic-gate 2568*0Sstevel@tonic-gate /* call the normal property interfaces */ 2569*0Sstevel@tonic-gate res = ddi_prop_get_int64(dev, dip, flags, name, defvalue); 2570*0Sstevel@tonic-gate 2571*0Sstevel@tonic-gate if (dip != NULL) 2572*0Sstevel@tonic-gate ddi_release_devi(dip); 2573*0Sstevel@tonic-gate 2574*0Sstevel@tonic-gate return (res); 2575*0Sstevel@tonic-gate } 2576*0Sstevel@tonic-gate 2577*0Sstevel@tonic-gate int 2578*0Sstevel@tonic-gate ldi_prop_exists(ldi_handle_t lh, uint_t flags, char *name) 2579*0Sstevel@tonic-gate { 2580*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2581*0Sstevel@tonic-gate dev_info_t *dip; 2582*0Sstevel@tonic-gate dev_t dev; 2583*0Sstevel@tonic-gate int res, prop_len; 2584*0Sstevel@tonic-gate struct snode *csp; 2585*0Sstevel@tonic-gate 2586*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2587*0Sstevel@tonic-gate return (0); 2588*0Sstevel@tonic-gate 2589*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2590*0Sstevel@tonic-gate 2591*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2592*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2593*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2594*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2595*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2596*0Sstevel@tonic-gate if (dip == NULL) 2597*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2598*0Sstevel@tonic-gate 2599*0Sstevel@tonic-gate /* if NULL dip, prop does NOT exist */ 2600*0Sstevel@tonic-gate if (dip == NULL) 2601*0Sstevel@tonic-gate return (0); 2602*0Sstevel@tonic-gate 2603*0Sstevel@tonic-gate if (flags & LDI_DEV_T_ANY) { 2604*0Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2605*0Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2606*0Sstevel@tonic-gate } 2607*0Sstevel@tonic-gate 2608*0Sstevel@tonic-gate /* 2609*0Sstevel@tonic-gate * first call the drivers prop_op interface to allow it 2610*0Sstevel@tonic-gate * it to override default property values. 2611*0Sstevel@tonic-gate */ 2612*0Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN, 2613*0Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, NULL, &prop_len); 2614*0Sstevel@tonic-gate 2615*0Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2616*0Sstevel@tonic-gate ddi_release_devi(dip); 2617*0Sstevel@tonic-gate return (1); 2618*0Sstevel@tonic-gate } 2619*0Sstevel@tonic-gate 2620*0Sstevel@tonic-gate /* call the normal property interfaces */ 2621*0Sstevel@tonic-gate res = ddi_prop_exists(dev, dip, flags, name); 2622*0Sstevel@tonic-gate 2623*0Sstevel@tonic-gate ddi_release_devi(dip); 2624*0Sstevel@tonic-gate return (res); 2625*0Sstevel@tonic-gate } 2626*0Sstevel@tonic-gate 2627*0Sstevel@tonic-gate int 2628*0Sstevel@tonic-gate ldi_get_eventcookie(ldi_handle_t lh, char *name, ddi_eventcookie_t *ecp) 2629*0Sstevel@tonic-gate { 2630*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2631*0Sstevel@tonic-gate dev_info_t *dip; 2632*0Sstevel@tonic-gate dev_t dev; 2633*0Sstevel@tonic-gate int res; 2634*0Sstevel@tonic-gate struct snode *csp; 2635*0Sstevel@tonic-gate 2636*0Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || 2637*0Sstevel@tonic-gate (strlen(name) == 0) || (ecp == NULL)) { 2638*0Sstevel@tonic-gate return (DDI_FAILURE); 2639*0Sstevel@tonic-gate } 2640*0Sstevel@tonic-gate 2641*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 2642*0Sstevel@tonic-gate 2643*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2644*0Sstevel@tonic-gate 2645*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2646*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2647*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2648*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2649*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2650*0Sstevel@tonic-gate if (dip == NULL) 2651*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2652*0Sstevel@tonic-gate 2653*0Sstevel@tonic-gate if (dip == NULL) 2654*0Sstevel@tonic-gate return (DDI_FAILURE); 2655*0Sstevel@tonic-gate 2656*0Sstevel@tonic-gate LDI_EVENTCB((CE_NOTE, "%s: event_name=%s, " 2657*0Sstevel@tonic-gate "dip=0x%p, event_cookiep=0x%p", "ldi_get_eventcookie", 2658*0Sstevel@tonic-gate name, (void *)dip, (void *)ecp)); 2659*0Sstevel@tonic-gate 2660*0Sstevel@tonic-gate res = ddi_get_eventcookie(dip, name, ecp); 2661*0Sstevel@tonic-gate 2662*0Sstevel@tonic-gate ddi_release_devi(dip); 2663*0Sstevel@tonic-gate return (res); 2664*0Sstevel@tonic-gate } 2665*0Sstevel@tonic-gate 2666*0Sstevel@tonic-gate int 2667*0Sstevel@tonic-gate ldi_add_event_handler(ldi_handle_t lh, ddi_eventcookie_t ec, 2668*0Sstevel@tonic-gate void (*handler)(ldi_handle_t, ddi_eventcookie_t, void *, void *), 2669*0Sstevel@tonic-gate void *arg, ldi_callback_id_t *id) 2670*0Sstevel@tonic-gate { 2671*0Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2672*0Sstevel@tonic-gate struct ldi_event *lep; 2673*0Sstevel@tonic-gate dev_info_t *dip; 2674*0Sstevel@tonic-gate dev_t dev; 2675*0Sstevel@tonic-gate int res; 2676*0Sstevel@tonic-gate struct snode *csp; 2677*0Sstevel@tonic-gate 2678*0Sstevel@tonic-gate if ((lh == NULL) || (ec == NULL) || (handler == NULL) || (id == NULL)) 2679*0Sstevel@tonic-gate return (DDI_FAILURE); 2680*0Sstevel@tonic-gate 2681*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 2682*0Sstevel@tonic-gate 2683*0Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2684*0Sstevel@tonic-gate 2685*0Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2686*0Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2687*0Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2688*0Sstevel@tonic-gate e_ddi_hold_devi(dip); 2689*0Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2690*0Sstevel@tonic-gate if (dip == NULL) 2691*0Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2692*0Sstevel@tonic-gate 2693*0Sstevel@tonic-gate if (dip == NULL) 2694*0Sstevel@tonic-gate return (DDI_FAILURE); 2695*0Sstevel@tonic-gate 2696*0Sstevel@tonic-gate lep = kmem_zalloc(sizeof (struct ldi_event), KM_SLEEP); 2697*0Sstevel@tonic-gate lep->le_lhp = handlep; 2698*0Sstevel@tonic-gate lep->le_arg = arg; 2699*0Sstevel@tonic-gate lep->le_handler = handler; 2700*0Sstevel@tonic-gate 2701*0Sstevel@tonic-gate if ((res = ddi_add_event_handler(dip, ec, i_ldi_callback, 2702*0Sstevel@tonic-gate (void *)lep, &lep->le_id)) != DDI_SUCCESS) { 2703*0Sstevel@tonic-gate LDI_EVENTCB((CE_WARN, "%s: unable to add" 2704*0Sstevel@tonic-gate "event callback", "ldi_add_event_handler")); 2705*0Sstevel@tonic-gate ddi_release_devi(dip); 2706*0Sstevel@tonic-gate kmem_free(lep, sizeof (struct ldi_event)); 2707*0Sstevel@tonic-gate return (res); 2708*0Sstevel@tonic-gate } 2709*0Sstevel@tonic-gate 2710*0Sstevel@tonic-gate *id = (ldi_callback_id_t)lep; 2711*0Sstevel@tonic-gate 2712*0Sstevel@tonic-gate LDI_EVENTCB((CE_NOTE, "%s: dip=0x%p, event=0x%p, " 2713*0Sstevel@tonic-gate "ldi_eventp=0x%p, cb_id=0x%p", "ldi_add_event_handler", 2714*0Sstevel@tonic-gate (void *)dip, (void *)ec, (void *)lep, (void *)id)); 2715*0Sstevel@tonic-gate 2716*0Sstevel@tonic-gate handle_event_add(lep); 2717*0Sstevel@tonic-gate ddi_release_devi(dip); 2718*0Sstevel@tonic-gate return (res); 2719*0Sstevel@tonic-gate } 2720*0Sstevel@tonic-gate 2721*0Sstevel@tonic-gate int 2722*0Sstevel@tonic-gate ldi_remove_event_handler(ldi_handle_t lh, ldi_callback_id_t id) 2723*0Sstevel@tonic-gate { 2724*0Sstevel@tonic-gate ldi_event_t *lep = (ldi_event_t *)id; 2725*0Sstevel@tonic-gate int res; 2726*0Sstevel@tonic-gate 2727*0Sstevel@tonic-gate if ((lh == NULL) || (id == NULL)) 2728*0Sstevel@tonic-gate return (DDI_FAILURE); 2729*0Sstevel@tonic-gate 2730*0Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 2731*0Sstevel@tonic-gate 2732*0Sstevel@tonic-gate if ((res = ddi_remove_event_handler(lep->le_id)) 2733*0Sstevel@tonic-gate != DDI_SUCCESS) { 2734*0Sstevel@tonic-gate LDI_EVENTCB((CE_WARN, "%s: unable to remove " 2735*0Sstevel@tonic-gate "event callback", "ldi_remove_event_handler")); 2736*0Sstevel@tonic-gate return (res); 2737*0Sstevel@tonic-gate } 2738*0Sstevel@tonic-gate 2739*0Sstevel@tonic-gate handle_event_remove(lep); 2740*0Sstevel@tonic-gate kmem_free(lep, sizeof (struct ldi_event)); 2741*0Sstevel@tonic-gate return (res); 2742*0Sstevel@tonic-gate } 2743