1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*7c478bd9Sstevel@tonic-gate 29*7c478bd9Sstevel@tonic-gate /* 30*7c478bd9Sstevel@tonic-gate * Layered driver support. 31*7c478bd9Sstevel@tonic-gate */ 32*7c478bd9Sstevel@tonic-gate 33*7c478bd9Sstevel@tonic-gate #include <sys/atomic.h> 34*7c478bd9Sstevel@tonic-gate #include <sys/types.h> 35*7c478bd9Sstevel@tonic-gate #include <sys/t_lock.h> 36*7c478bd9Sstevel@tonic-gate #include <sys/param.h> 37*7c478bd9Sstevel@tonic-gate #include <sys/conf.h> 38*7c478bd9Sstevel@tonic-gate #include <sys/systm.h> 39*7c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h> 40*7c478bd9Sstevel@tonic-gate #include <sys/buf.h> 41*7c478bd9Sstevel@tonic-gate #include <sys/cred.h> 42*7c478bd9Sstevel@tonic-gate #include <sys/uio.h> 43*7c478bd9Sstevel@tonic-gate #include <sys/vnode.h> 44*7c478bd9Sstevel@tonic-gate #include <sys/fs/snode.h> 45*7c478bd9Sstevel@tonic-gate #include <sys/open.h> 46*7c478bd9Sstevel@tonic-gate #include <sys/kmem.h> 47*7c478bd9Sstevel@tonic-gate #include <sys/file.h> 48*7c478bd9Sstevel@tonic-gate #include <sys/bootconf.h> 49*7c478bd9Sstevel@tonic-gate #include <sys/pathname.h> 50*7c478bd9Sstevel@tonic-gate #include <sys/bitmap.h> 51*7c478bd9Sstevel@tonic-gate #include <sys/stat.h> 52*7c478bd9Sstevel@tonic-gate #include <sys/dditypes.h> 53*7c478bd9Sstevel@tonic-gate #include <sys/ddi_impldefs.h> 54*7c478bd9Sstevel@tonic-gate #include <sys/ddi.h> 55*7c478bd9Sstevel@tonic-gate #include <sys/sunddi.h> 56*7c478bd9Sstevel@tonic-gate #include <sys/sunndi.h> 57*7c478bd9Sstevel@tonic-gate #include <sys/esunddi.h> 58*7c478bd9Sstevel@tonic-gate #include <sys/autoconf.h> 59*7c478bd9Sstevel@tonic-gate #include <sys/sunldi.h> 60*7c478bd9Sstevel@tonic-gate #include <sys/sunldi_impl.h> 61*7c478bd9Sstevel@tonic-gate #include <sys/errno.h> 62*7c478bd9Sstevel@tonic-gate #include <sys/debug.h> 63*7c478bd9Sstevel@tonic-gate #include <sys/modctl.h> 64*7c478bd9Sstevel@tonic-gate #include <sys/var.h> 65*7c478bd9Sstevel@tonic-gate #include <vm/seg_vn.h> 66*7c478bd9Sstevel@tonic-gate 67*7c478bd9Sstevel@tonic-gate #include <sys/stropts.h> 68*7c478bd9Sstevel@tonic-gate #include <sys/strsubr.h> 69*7c478bd9Sstevel@tonic-gate #include <sys/socket.h> 70*7c478bd9Sstevel@tonic-gate #include <sys/socketvar.h> 71*7c478bd9Sstevel@tonic-gate #include <sys/kstr.h> 72*7c478bd9Sstevel@tonic-gate 73*7c478bd9Sstevel@tonic-gate 74*7c478bd9Sstevel@tonic-gate /* 75*7c478bd9Sstevel@tonic-gate * Define macros to manipulate snode, vnode, and open device flags 76*7c478bd9Sstevel@tonic-gate */ 77*7c478bd9Sstevel@tonic-gate #define VTYP_VALID(i) (((i) == VCHR) || ((i) == VBLK)) 78*7c478bd9Sstevel@tonic-gate #define VTYP_TO_OTYP(i) (((i) == VCHR) ? OTYP_CHR : OTYP_BLK) 79*7c478bd9Sstevel@tonic-gate #define VTYP_TO_STYP(i) (((i) == VCHR) ? S_IFCHR : S_IFBLK) 80*7c478bd9Sstevel@tonic-gate 81*7c478bd9Sstevel@tonic-gate #define OTYP_VALID(i) (((i) == OTYP_CHR) || ((i) == OTYP_BLK)) 82*7c478bd9Sstevel@tonic-gate #define OTYP_TO_VTYP(i) (((i) == OTYP_CHR) ? VCHR : VBLK) 83*7c478bd9Sstevel@tonic-gate #define OTYP_TO_STYP(i) (((i) == OTYP_CHR) ? S_IFCHR : S_IFBLK) 84*7c478bd9Sstevel@tonic-gate 85*7c478bd9Sstevel@tonic-gate #define STYP_VALID(i) (((i) == S_IFCHR) || ((i) == S_IFBLK)) 86*7c478bd9Sstevel@tonic-gate #define STYP_TO_VTYP(i) (((i) == S_IFCHR) ? VCHR : VBLK) 87*7c478bd9Sstevel@tonic-gate 88*7c478bd9Sstevel@tonic-gate /* 89*7c478bd9Sstevel@tonic-gate * Define macros for accessing layered driver hash structures 90*7c478bd9Sstevel@tonic-gate */ 91*7c478bd9Sstevel@tonic-gate #define LH_HASH(vp) (handle_hash_func(vp) % LH_HASH_SZ) 92*7c478bd9Sstevel@tonic-gate #define LI_HASH(mid, dip, dev) (ident_hash_func(mid, dip, dev) % LI_HASH_SZ) 93*7c478bd9Sstevel@tonic-gate 94*7c478bd9Sstevel@tonic-gate /* 95*7c478bd9Sstevel@tonic-gate * Define layered handle flags used in the lh_type field 96*7c478bd9Sstevel@tonic-gate */ 97*7c478bd9Sstevel@tonic-gate #define LH_STREAM (0x1) /* handle to a streams device */ 98*7c478bd9Sstevel@tonic-gate #define LH_CBDEV (0x2) /* handle to a char/block device */ 99*7c478bd9Sstevel@tonic-gate 100*7c478bd9Sstevel@tonic-gate /* 101*7c478bd9Sstevel@tonic-gate * Define marco for devid property lookups 102*7c478bd9Sstevel@tonic-gate */ 103*7c478bd9Sstevel@tonic-gate #define DEVID_PROP_FLAGS (DDI_PROP_DONTPASS | \ 104*7c478bd9Sstevel@tonic-gate DDI_PROP_TYPE_STRING|DDI_PROP_CANSLEEP) 105*7c478bd9Sstevel@tonic-gate 106*7c478bd9Sstevel@tonic-gate 107*7c478bd9Sstevel@tonic-gate /* 108*7c478bd9Sstevel@tonic-gate * globals 109*7c478bd9Sstevel@tonic-gate */ 110*7c478bd9Sstevel@tonic-gate static kmutex_t ldi_ident_hash_lock[LI_HASH_SZ]; 111*7c478bd9Sstevel@tonic-gate static struct ldi_ident *ldi_ident_hash[LI_HASH_SZ]; 112*7c478bd9Sstevel@tonic-gate 113*7c478bd9Sstevel@tonic-gate static kmutex_t ldi_handle_hash_lock[LH_HASH_SZ]; 114*7c478bd9Sstevel@tonic-gate static struct ldi_handle *ldi_handle_hash[LH_HASH_SZ]; 115*7c478bd9Sstevel@tonic-gate static size_t ldi_handle_hash_count; 116*7c478bd9Sstevel@tonic-gate 117*7c478bd9Sstevel@tonic-gate void 118*7c478bd9Sstevel@tonic-gate ldi_init(void) 119*7c478bd9Sstevel@tonic-gate { 120*7c478bd9Sstevel@tonic-gate int i; 121*7c478bd9Sstevel@tonic-gate 122*7c478bd9Sstevel@tonic-gate ldi_handle_hash_count = 0; 123*7c478bd9Sstevel@tonic-gate for (i = 0; i < LH_HASH_SZ; i++) { 124*7c478bd9Sstevel@tonic-gate mutex_init(&ldi_handle_hash_lock[i], NULL, MUTEX_DEFAULT, NULL); 125*7c478bd9Sstevel@tonic-gate ldi_handle_hash[i] = NULL; 126*7c478bd9Sstevel@tonic-gate } 127*7c478bd9Sstevel@tonic-gate for (i = 0; i < LI_HASH_SZ; i++) { 128*7c478bd9Sstevel@tonic-gate mutex_init(&ldi_ident_hash_lock[i], NULL, MUTEX_DEFAULT, NULL); 129*7c478bd9Sstevel@tonic-gate ldi_ident_hash[i] = NULL; 130*7c478bd9Sstevel@tonic-gate } 131*7c478bd9Sstevel@tonic-gate } 132*7c478bd9Sstevel@tonic-gate 133*7c478bd9Sstevel@tonic-gate /* 134*7c478bd9Sstevel@tonic-gate * LDI ident manipulation functions 135*7c478bd9Sstevel@tonic-gate */ 136*7c478bd9Sstevel@tonic-gate static uint_t 137*7c478bd9Sstevel@tonic-gate ident_hash_func(modid_t modid, dev_info_t *dip, dev_t dev) 138*7c478bd9Sstevel@tonic-gate { 139*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 140*7c478bd9Sstevel@tonic-gate uintptr_t k = (uintptr_t)dip; 141*7c478bd9Sstevel@tonic-gate k >>= (int)highbit(sizeof (struct dev_info)); 142*7c478bd9Sstevel@tonic-gate return ((uint_t)k); 143*7c478bd9Sstevel@tonic-gate } else if (dev != DDI_DEV_T_NONE) { 144*7c478bd9Sstevel@tonic-gate return (modid + getminor(dev) + getmajor(dev)); 145*7c478bd9Sstevel@tonic-gate } else { 146*7c478bd9Sstevel@tonic-gate return (modid); 147*7c478bd9Sstevel@tonic-gate } 148*7c478bd9Sstevel@tonic-gate } 149*7c478bd9Sstevel@tonic-gate 150*7c478bd9Sstevel@tonic-gate static struct ldi_ident ** 151*7c478bd9Sstevel@tonic-gate ident_find_ref_nolock(modid_t modid, dev_info_t *dip, dev_t dev, major_t major) 152*7c478bd9Sstevel@tonic-gate { 153*7c478bd9Sstevel@tonic-gate struct ldi_ident **lipp = NULL; 154*7c478bd9Sstevel@tonic-gate uint_t index = LI_HASH(modid, dip, dev); 155*7c478bd9Sstevel@tonic-gate 156*7c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&ldi_ident_hash_lock[index])); 157*7c478bd9Sstevel@tonic-gate 158*7c478bd9Sstevel@tonic-gate for (lipp = &(ldi_ident_hash[index]); 159*7c478bd9Sstevel@tonic-gate (*lipp != NULL); 160*7c478bd9Sstevel@tonic-gate lipp = &((*lipp)->li_next)) { 161*7c478bd9Sstevel@tonic-gate if (((*lipp)->li_modid == modid) && 162*7c478bd9Sstevel@tonic-gate ((*lipp)->li_major == major) && 163*7c478bd9Sstevel@tonic-gate ((*lipp)->li_dip == dip) && 164*7c478bd9Sstevel@tonic-gate ((*lipp)->li_dev == dev)) 165*7c478bd9Sstevel@tonic-gate break; 166*7c478bd9Sstevel@tonic-gate } 167*7c478bd9Sstevel@tonic-gate 168*7c478bd9Sstevel@tonic-gate ASSERT(lipp != NULL); 169*7c478bd9Sstevel@tonic-gate return (lipp); 170*7c478bd9Sstevel@tonic-gate } 171*7c478bd9Sstevel@tonic-gate 172*7c478bd9Sstevel@tonic-gate static struct ldi_ident * 173*7c478bd9Sstevel@tonic-gate ident_alloc(char *mod_name, dev_info_t *dip, dev_t dev, major_t major) 174*7c478bd9Sstevel@tonic-gate { 175*7c478bd9Sstevel@tonic-gate struct ldi_ident *lip, **lipp; 176*7c478bd9Sstevel@tonic-gate modid_t modid; 177*7c478bd9Sstevel@tonic-gate uint_t index; 178*7c478bd9Sstevel@tonic-gate 179*7c478bd9Sstevel@tonic-gate ASSERT(mod_name != NULL); 180*7c478bd9Sstevel@tonic-gate 181*7c478bd9Sstevel@tonic-gate /* get the module id */ 182*7c478bd9Sstevel@tonic-gate modid = mod_name_to_modid(mod_name); 183*7c478bd9Sstevel@tonic-gate ASSERT(modid != -1); 184*7c478bd9Sstevel@tonic-gate 185*7c478bd9Sstevel@tonic-gate /* allocate a new ident in case we need it */ 186*7c478bd9Sstevel@tonic-gate lip = kmem_zalloc(sizeof (*lip), KM_SLEEP); 187*7c478bd9Sstevel@tonic-gate 188*7c478bd9Sstevel@tonic-gate /* search the hash for a matching ident */ 189*7c478bd9Sstevel@tonic-gate index = LI_HASH(modid, dip, dev); 190*7c478bd9Sstevel@tonic-gate mutex_enter(&ldi_ident_hash_lock[index]); 191*7c478bd9Sstevel@tonic-gate lipp = ident_find_ref_nolock(modid, dip, dev, major); 192*7c478bd9Sstevel@tonic-gate 193*7c478bd9Sstevel@tonic-gate if (*lipp != NULL) { 194*7c478bd9Sstevel@tonic-gate /* we found an indent in the hash */ 195*7c478bd9Sstevel@tonic-gate ASSERT(strcmp((*lipp)->li_modname, mod_name) == 0); 196*7c478bd9Sstevel@tonic-gate (*lipp)->li_ref++; 197*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 198*7c478bd9Sstevel@tonic-gate kmem_free(lip, sizeof (struct ldi_ident)); 199*7c478bd9Sstevel@tonic-gate return (*lipp); 200*7c478bd9Sstevel@tonic-gate } 201*7c478bd9Sstevel@tonic-gate 202*7c478bd9Sstevel@tonic-gate /* initialize the new ident */ 203*7c478bd9Sstevel@tonic-gate lip->li_next = NULL; 204*7c478bd9Sstevel@tonic-gate lip->li_ref = 1; 205*7c478bd9Sstevel@tonic-gate lip->li_modid = modid; 206*7c478bd9Sstevel@tonic-gate lip->li_major = major; 207*7c478bd9Sstevel@tonic-gate lip->li_dip = dip; 208*7c478bd9Sstevel@tonic-gate lip->li_dev = dev; 209*7c478bd9Sstevel@tonic-gate (void) strncpy(lip->li_modname, mod_name, sizeof (lip->li_modname) - 1); 210*7c478bd9Sstevel@tonic-gate 211*7c478bd9Sstevel@tonic-gate /* add it to the ident hash */ 212*7c478bd9Sstevel@tonic-gate lip->li_next = ldi_ident_hash[index]; 213*7c478bd9Sstevel@tonic-gate ldi_ident_hash[index] = lip; 214*7c478bd9Sstevel@tonic-gate 215*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 216*7c478bd9Sstevel@tonic-gate return (lip); 217*7c478bd9Sstevel@tonic-gate } 218*7c478bd9Sstevel@tonic-gate 219*7c478bd9Sstevel@tonic-gate static void 220*7c478bd9Sstevel@tonic-gate ident_hold(struct ldi_ident *lip) 221*7c478bd9Sstevel@tonic-gate { 222*7c478bd9Sstevel@tonic-gate uint_t index; 223*7c478bd9Sstevel@tonic-gate 224*7c478bd9Sstevel@tonic-gate ASSERT(lip != NULL); 225*7c478bd9Sstevel@tonic-gate index = LI_HASH(lip->li_modid, lip->li_dip, lip->li_dev); 226*7c478bd9Sstevel@tonic-gate mutex_enter(&ldi_ident_hash_lock[index]); 227*7c478bd9Sstevel@tonic-gate ASSERT(lip->li_ref > 0); 228*7c478bd9Sstevel@tonic-gate lip->li_ref++; 229*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 230*7c478bd9Sstevel@tonic-gate } 231*7c478bd9Sstevel@tonic-gate 232*7c478bd9Sstevel@tonic-gate static void 233*7c478bd9Sstevel@tonic-gate ident_release(struct ldi_ident *lip) 234*7c478bd9Sstevel@tonic-gate { 235*7c478bd9Sstevel@tonic-gate struct ldi_ident **lipp; 236*7c478bd9Sstevel@tonic-gate uint_t index; 237*7c478bd9Sstevel@tonic-gate 238*7c478bd9Sstevel@tonic-gate ASSERT(lip != NULL); 239*7c478bd9Sstevel@tonic-gate index = LI_HASH(lip->li_modid, lip->li_dip, lip->li_dev); 240*7c478bd9Sstevel@tonic-gate mutex_enter(&ldi_ident_hash_lock[index]); 241*7c478bd9Sstevel@tonic-gate 242*7c478bd9Sstevel@tonic-gate ASSERT(lip->li_ref > 0); 243*7c478bd9Sstevel@tonic-gate if (--lip->li_ref > 0) { 244*7c478bd9Sstevel@tonic-gate /* there are more references to this ident */ 245*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 246*7c478bd9Sstevel@tonic-gate return; 247*7c478bd9Sstevel@tonic-gate } 248*7c478bd9Sstevel@tonic-gate 249*7c478bd9Sstevel@tonic-gate /* this was the last reference/open for this ident. free it. */ 250*7c478bd9Sstevel@tonic-gate lipp = ident_find_ref_nolock( 251*7c478bd9Sstevel@tonic-gate lip->li_modid, lip->li_dip, lip->li_dev, lip->li_major); 252*7c478bd9Sstevel@tonic-gate 253*7c478bd9Sstevel@tonic-gate ASSERT((lipp != NULL) && (*lipp != NULL)); 254*7c478bd9Sstevel@tonic-gate *lipp = lip->li_next; 255*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 256*7c478bd9Sstevel@tonic-gate kmem_free(lip, sizeof (struct ldi_ident)); 257*7c478bd9Sstevel@tonic-gate } 258*7c478bd9Sstevel@tonic-gate 259*7c478bd9Sstevel@tonic-gate /* 260*7c478bd9Sstevel@tonic-gate * LDI handle manipulation functions 261*7c478bd9Sstevel@tonic-gate */ 262*7c478bd9Sstevel@tonic-gate static uint_t 263*7c478bd9Sstevel@tonic-gate handle_hash_func(void *vp) 264*7c478bd9Sstevel@tonic-gate { 265*7c478bd9Sstevel@tonic-gate uintptr_t k = (uintptr_t)vp; 266*7c478bd9Sstevel@tonic-gate k >>= (int)highbit(sizeof (vnode_t)); 267*7c478bd9Sstevel@tonic-gate return ((uint_t)k); 268*7c478bd9Sstevel@tonic-gate } 269*7c478bd9Sstevel@tonic-gate 270*7c478bd9Sstevel@tonic-gate static struct ldi_handle ** 271*7c478bd9Sstevel@tonic-gate handle_find_ref_nolock(vnode_t *vp, struct ldi_ident *ident) 272*7c478bd9Sstevel@tonic-gate { 273*7c478bd9Sstevel@tonic-gate struct ldi_handle **lhpp = NULL; 274*7c478bd9Sstevel@tonic-gate uint_t index = LH_HASH(vp); 275*7c478bd9Sstevel@tonic-gate 276*7c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&ldi_handle_hash_lock[index])); 277*7c478bd9Sstevel@tonic-gate 278*7c478bd9Sstevel@tonic-gate for (lhpp = &(ldi_handle_hash[index]); 279*7c478bd9Sstevel@tonic-gate (*lhpp != NULL); 280*7c478bd9Sstevel@tonic-gate lhpp = &((*lhpp)->lh_next)) { 281*7c478bd9Sstevel@tonic-gate if (((*lhpp)->lh_ident == ident) && 282*7c478bd9Sstevel@tonic-gate ((*lhpp)->lh_vp == vp)) 283*7c478bd9Sstevel@tonic-gate break; 284*7c478bd9Sstevel@tonic-gate } 285*7c478bd9Sstevel@tonic-gate 286*7c478bd9Sstevel@tonic-gate ASSERT(lhpp != NULL); 287*7c478bd9Sstevel@tonic-gate return (lhpp); 288*7c478bd9Sstevel@tonic-gate } 289*7c478bd9Sstevel@tonic-gate 290*7c478bd9Sstevel@tonic-gate static struct ldi_handle * 291*7c478bd9Sstevel@tonic-gate handle_find(vnode_t *vp, struct ldi_ident *ident) 292*7c478bd9Sstevel@tonic-gate { 293*7c478bd9Sstevel@tonic-gate struct ldi_handle **lhpp; 294*7c478bd9Sstevel@tonic-gate int index = LH_HASH(vp); 295*7c478bd9Sstevel@tonic-gate 296*7c478bd9Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[index]); 297*7c478bd9Sstevel@tonic-gate lhpp = handle_find_ref_nolock(vp, ident); 298*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 299*7c478bd9Sstevel@tonic-gate ASSERT(lhpp != NULL); 300*7c478bd9Sstevel@tonic-gate return (*lhpp); 301*7c478bd9Sstevel@tonic-gate } 302*7c478bd9Sstevel@tonic-gate 303*7c478bd9Sstevel@tonic-gate static struct ldi_handle * 304*7c478bd9Sstevel@tonic-gate handle_alloc(vnode_t *vp, struct ldi_ident *ident) 305*7c478bd9Sstevel@tonic-gate { 306*7c478bd9Sstevel@tonic-gate struct ldi_handle *lhp, **lhpp; 307*7c478bd9Sstevel@tonic-gate uint_t index; 308*7c478bd9Sstevel@tonic-gate 309*7c478bd9Sstevel@tonic-gate ASSERT((vp != NULL) && (ident != NULL)); 310*7c478bd9Sstevel@tonic-gate 311*7c478bd9Sstevel@tonic-gate /* allocate a new handle in case we need it */ 312*7c478bd9Sstevel@tonic-gate lhp = kmem_zalloc(sizeof (*lhp), KM_SLEEP); 313*7c478bd9Sstevel@tonic-gate 314*7c478bd9Sstevel@tonic-gate /* search the hash for a matching handle */ 315*7c478bd9Sstevel@tonic-gate index = LH_HASH(vp); 316*7c478bd9Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[index]); 317*7c478bd9Sstevel@tonic-gate lhpp = handle_find_ref_nolock(vp, ident); 318*7c478bd9Sstevel@tonic-gate 319*7c478bd9Sstevel@tonic-gate if (*lhpp != NULL) { 320*7c478bd9Sstevel@tonic-gate /* we found a handle in the hash */ 321*7c478bd9Sstevel@tonic-gate (*lhpp)->lh_ref++; 322*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 323*7c478bd9Sstevel@tonic-gate 324*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "ldi handle alloc: dup " 325*7c478bd9Sstevel@tonic-gate "lh=0x%p, ident=0x%p, vp=0x%p, drv=%s, minor=0x%x", 326*7c478bd9Sstevel@tonic-gate (void *)*lhpp, (void *)ident, (void *)vp, 327*7c478bd9Sstevel@tonic-gate mod_major_to_name(getmajor(vp->v_rdev)), 328*7c478bd9Sstevel@tonic-gate getminor(vp->v_rdev))); 329*7c478bd9Sstevel@tonic-gate 330*7c478bd9Sstevel@tonic-gate kmem_free(lhp, sizeof (struct ldi_handle)); 331*7c478bd9Sstevel@tonic-gate return (*lhpp); 332*7c478bd9Sstevel@tonic-gate } 333*7c478bd9Sstevel@tonic-gate 334*7c478bd9Sstevel@tonic-gate /* initialize the new handle */ 335*7c478bd9Sstevel@tonic-gate lhp->lh_ref = 1; 336*7c478bd9Sstevel@tonic-gate lhp->lh_vp = vp; 337*7c478bd9Sstevel@tonic-gate lhp->lh_ident = ident; 338*7c478bd9Sstevel@tonic-gate mutex_init(lhp->lh_lock, NULL, MUTEX_DEFAULT, NULL); 339*7c478bd9Sstevel@tonic-gate 340*7c478bd9Sstevel@tonic-gate /* set the device type for this handle */ 341*7c478bd9Sstevel@tonic-gate lhp->lh_type = 0; 342*7c478bd9Sstevel@tonic-gate if (STREAMSTAB(getmajor(vp->v_rdev))) { 343*7c478bd9Sstevel@tonic-gate ASSERT(vp->v_type == VCHR); 344*7c478bd9Sstevel@tonic-gate lhp->lh_type |= LH_STREAM; 345*7c478bd9Sstevel@tonic-gate } else { 346*7c478bd9Sstevel@tonic-gate lhp->lh_type |= LH_CBDEV; 347*7c478bd9Sstevel@tonic-gate } 348*7c478bd9Sstevel@tonic-gate 349*7c478bd9Sstevel@tonic-gate /* get holds on other objects */ 350*7c478bd9Sstevel@tonic-gate ident_hold(ident); 351*7c478bd9Sstevel@tonic-gate ASSERT(vp->v_count >= 1); 352*7c478bd9Sstevel@tonic-gate VN_HOLD(vp); 353*7c478bd9Sstevel@tonic-gate 354*7c478bd9Sstevel@tonic-gate /* add it to the handle hash */ 355*7c478bd9Sstevel@tonic-gate lhp->lh_next = ldi_handle_hash[index]; 356*7c478bd9Sstevel@tonic-gate ldi_handle_hash[index] = lhp; 357*7c478bd9Sstevel@tonic-gate atomic_add_long(&ldi_handle_hash_count, 1); 358*7c478bd9Sstevel@tonic-gate 359*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "ldi handle alloc: new " 360*7c478bd9Sstevel@tonic-gate "lh=0x%p, ident=0x%p, vp=0x%p, drv=%s, minor=0x%x", 361*7c478bd9Sstevel@tonic-gate (void *)lhp, (void *)ident, (void *)vp, 362*7c478bd9Sstevel@tonic-gate mod_major_to_name(getmajor(vp->v_rdev)), 363*7c478bd9Sstevel@tonic-gate getminor(vp->v_rdev))); 364*7c478bd9Sstevel@tonic-gate 365*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 366*7c478bd9Sstevel@tonic-gate return (lhp); 367*7c478bd9Sstevel@tonic-gate } 368*7c478bd9Sstevel@tonic-gate 369*7c478bd9Sstevel@tonic-gate static void 370*7c478bd9Sstevel@tonic-gate handle_release(struct ldi_handle *lhp) 371*7c478bd9Sstevel@tonic-gate { 372*7c478bd9Sstevel@tonic-gate struct ldi_handle **lhpp; 373*7c478bd9Sstevel@tonic-gate uint_t index; 374*7c478bd9Sstevel@tonic-gate 375*7c478bd9Sstevel@tonic-gate ASSERT(lhp != NULL); 376*7c478bd9Sstevel@tonic-gate 377*7c478bd9Sstevel@tonic-gate index = LH_HASH(lhp->lh_vp); 378*7c478bd9Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[index]); 379*7c478bd9Sstevel@tonic-gate 380*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "ldi handle release: " 381*7c478bd9Sstevel@tonic-gate "lh=0x%p, ident=0x%p, vp=0x%p, drv=%s, minor=0x%x", 382*7c478bd9Sstevel@tonic-gate (void *)lhp, (void *)lhp->lh_ident, (void *)lhp->lh_vp, 383*7c478bd9Sstevel@tonic-gate mod_major_to_name(getmajor(lhp->lh_vp->v_rdev)), 384*7c478bd9Sstevel@tonic-gate getminor(lhp->lh_vp->v_rdev))); 385*7c478bd9Sstevel@tonic-gate 386*7c478bd9Sstevel@tonic-gate ASSERT(lhp->lh_ref > 0); 387*7c478bd9Sstevel@tonic-gate if (--lhp->lh_ref > 0) { 388*7c478bd9Sstevel@tonic-gate /* there are more references to this handle */ 389*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 390*7c478bd9Sstevel@tonic-gate return; 391*7c478bd9Sstevel@tonic-gate } 392*7c478bd9Sstevel@tonic-gate 393*7c478bd9Sstevel@tonic-gate /* this was the last reference/open for this handle. free it. */ 394*7c478bd9Sstevel@tonic-gate lhpp = handle_find_ref_nolock(lhp->lh_vp, lhp->lh_ident); 395*7c478bd9Sstevel@tonic-gate ASSERT((lhpp != NULL) && (*lhpp != NULL)); 396*7c478bd9Sstevel@tonic-gate *lhpp = lhp->lh_next; 397*7c478bd9Sstevel@tonic-gate atomic_add_long(&ldi_handle_hash_count, -1); 398*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 399*7c478bd9Sstevel@tonic-gate 400*7c478bd9Sstevel@tonic-gate VN_RELE(lhp->lh_vp); 401*7c478bd9Sstevel@tonic-gate ident_release(lhp->lh_ident); 402*7c478bd9Sstevel@tonic-gate mutex_destroy(lhp->lh_lock); 403*7c478bd9Sstevel@tonic-gate kmem_free(lhp, sizeof (struct ldi_handle)); 404*7c478bd9Sstevel@tonic-gate } 405*7c478bd9Sstevel@tonic-gate 406*7c478bd9Sstevel@tonic-gate /* 407*7c478bd9Sstevel@tonic-gate * LDI event manipulation functions 408*7c478bd9Sstevel@tonic-gate */ 409*7c478bd9Sstevel@tonic-gate static void 410*7c478bd9Sstevel@tonic-gate handle_event_add(ldi_event_t *lep) 411*7c478bd9Sstevel@tonic-gate { 412*7c478bd9Sstevel@tonic-gate struct ldi_handle *lhp = lep->le_lhp; 413*7c478bd9Sstevel@tonic-gate 414*7c478bd9Sstevel@tonic-gate ASSERT(lhp != NULL); 415*7c478bd9Sstevel@tonic-gate 416*7c478bd9Sstevel@tonic-gate mutex_enter(lhp->lh_lock); 417*7c478bd9Sstevel@tonic-gate if (lhp->lh_events == NULL) { 418*7c478bd9Sstevel@tonic-gate lhp->lh_events = lep; 419*7c478bd9Sstevel@tonic-gate mutex_exit(lhp->lh_lock); 420*7c478bd9Sstevel@tonic-gate return; 421*7c478bd9Sstevel@tonic-gate } 422*7c478bd9Sstevel@tonic-gate 423*7c478bd9Sstevel@tonic-gate lep->le_next = lhp->lh_events; 424*7c478bd9Sstevel@tonic-gate lhp->lh_events->le_prev = lep; 425*7c478bd9Sstevel@tonic-gate lhp->lh_events = lep; 426*7c478bd9Sstevel@tonic-gate mutex_exit(lhp->lh_lock); 427*7c478bd9Sstevel@tonic-gate } 428*7c478bd9Sstevel@tonic-gate 429*7c478bd9Sstevel@tonic-gate static void 430*7c478bd9Sstevel@tonic-gate handle_event_remove(ldi_event_t *lep) 431*7c478bd9Sstevel@tonic-gate { 432*7c478bd9Sstevel@tonic-gate struct ldi_handle *lhp = lep->le_lhp; 433*7c478bd9Sstevel@tonic-gate 434*7c478bd9Sstevel@tonic-gate ASSERT(lhp != NULL); 435*7c478bd9Sstevel@tonic-gate 436*7c478bd9Sstevel@tonic-gate mutex_enter(lhp->lh_lock); 437*7c478bd9Sstevel@tonic-gate if (lep->le_prev) 438*7c478bd9Sstevel@tonic-gate lep->le_prev->le_next = lep->le_next; 439*7c478bd9Sstevel@tonic-gate if (lep->le_next) 440*7c478bd9Sstevel@tonic-gate lep->le_next->le_prev = lep->le_prev; 441*7c478bd9Sstevel@tonic-gate if (lhp->lh_events == lep) 442*7c478bd9Sstevel@tonic-gate lhp->lh_events = lep->le_next; 443*7c478bd9Sstevel@tonic-gate mutex_exit(lhp->lh_lock); 444*7c478bd9Sstevel@tonic-gate 445*7c478bd9Sstevel@tonic-gate } 446*7c478bd9Sstevel@tonic-gate 447*7c478bd9Sstevel@tonic-gate static void 448*7c478bd9Sstevel@tonic-gate i_ldi_callback(dev_info_t *dip, ddi_eventcookie_t event_cookie, 449*7c478bd9Sstevel@tonic-gate void *arg, void *bus_impldata) 450*7c478bd9Sstevel@tonic-gate { 451*7c478bd9Sstevel@tonic-gate ldi_event_t *lep = (ldi_event_t *)arg; 452*7c478bd9Sstevel@tonic-gate 453*7c478bd9Sstevel@tonic-gate ASSERT(lep != NULL); 454*7c478bd9Sstevel@tonic-gate 455*7c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_NOTE, "%s: dip=0x%p, " 456*7c478bd9Sstevel@tonic-gate "event_cookie=0x%p, ldi_eventp=0x%p", "i_ldi_callback", 457*7c478bd9Sstevel@tonic-gate (void *)dip, (void *)event_cookie, (void *)lep)); 458*7c478bd9Sstevel@tonic-gate 459*7c478bd9Sstevel@tonic-gate lep->le_handler(lep->le_lhp, event_cookie, lep->le_arg, bus_impldata); 460*7c478bd9Sstevel@tonic-gate } 461*7c478bd9Sstevel@tonic-gate 462*7c478bd9Sstevel@tonic-gate /* 463*7c478bd9Sstevel@tonic-gate * LDI open helper functions 464*7c478bd9Sstevel@tonic-gate */ 465*7c478bd9Sstevel@tonic-gate 466*7c478bd9Sstevel@tonic-gate /* get a vnode to a device by dev_t and otyp */ 467*7c478bd9Sstevel@tonic-gate static int 468*7c478bd9Sstevel@tonic-gate ldi_vp_from_dev(dev_t dev, int otyp, vnode_t **vpp) 469*7c478bd9Sstevel@tonic-gate { 470*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 471*7c478bd9Sstevel@tonic-gate vnode_t *vp; 472*7c478bd9Sstevel@tonic-gate 473*7c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 474*7c478bd9Sstevel@tonic-gate if ((dev == DDI_DEV_T_NONE) || (!OTYP_VALID(otyp)) || (vpp == NULL)) 475*7c478bd9Sstevel@tonic-gate return (EINVAL); 476*7c478bd9Sstevel@tonic-gate 477*7c478bd9Sstevel@tonic-gate if ((dip = e_ddi_hold_devi_by_dev(dev, 0)) == NULL) 478*7c478bd9Sstevel@tonic-gate return (ENODEV); 479*7c478bd9Sstevel@tonic-gate 480*7c478bd9Sstevel@tonic-gate if (STREAMSTAB(getmajor(dev)) && (otyp != OTYP_CHR)) { 481*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev */ 482*7c478bd9Sstevel@tonic-gate return (ENXIO); 483*7c478bd9Sstevel@tonic-gate } 484*7c478bd9Sstevel@tonic-gate 485*7c478bd9Sstevel@tonic-gate vp = makespecvp(dev, OTYP_TO_VTYP(otyp)); 486*7c478bd9Sstevel@tonic-gate spec_assoc_vp_with_devi(vp, dip); 487*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev */ 488*7c478bd9Sstevel@tonic-gate 489*7c478bd9Sstevel@tonic-gate *vpp = vp; 490*7c478bd9Sstevel@tonic-gate return (0); 491*7c478bd9Sstevel@tonic-gate } 492*7c478bd9Sstevel@tonic-gate 493*7c478bd9Sstevel@tonic-gate /* get a vnode to a device by pathname */ 494*7c478bd9Sstevel@tonic-gate static int 495*7c478bd9Sstevel@tonic-gate ldi_vp_from_name(char *path, vnode_t **vpp) 496*7c478bd9Sstevel@tonic-gate { 497*7c478bd9Sstevel@tonic-gate vnode_t *vp = NULL; 498*7c478bd9Sstevel@tonic-gate int ret; 499*7c478bd9Sstevel@tonic-gate 500*7c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 501*7c478bd9Sstevel@tonic-gate if ((path == NULL) || (vpp == NULL)) 502*7c478bd9Sstevel@tonic-gate return (EINVAL); 503*7c478bd9Sstevel@tonic-gate 504*7c478bd9Sstevel@tonic-gate if (modrootloaded) { 505*7c478bd9Sstevel@tonic-gate cred_t *saved_cred = curthread->t_cred; 506*7c478bd9Sstevel@tonic-gate 507*7c478bd9Sstevel@tonic-gate /* we don't want lookupname to fail because of credentials */ 508*7c478bd9Sstevel@tonic-gate curthread->t_cred = kcred; 509*7c478bd9Sstevel@tonic-gate ret = lookupname(path, UIO_SYSSPACE, FOLLOW, NULLVPP, &vp); 510*7c478bd9Sstevel@tonic-gate curthread->t_cred = saved_cred; 511*7c478bd9Sstevel@tonic-gate 512*7c478bd9Sstevel@tonic-gate if (ret == 0) { 513*7c478bd9Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops()) || 514*7c478bd9Sstevel@tonic-gate !VTYP_VALID(vp->v_type)) { 515*7c478bd9Sstevel@tonic-gate VN_RELE(vp); 516*7c478bd9Sstevel@tonic-gate return (ENXIO); 517*7c478bd9Sstevel@tonic-gate } 518*7c478bd9Sstevel@tonic-gate } 519*7c478bd9Sstevel@tonic-gate } 520*7c478bd9Sstevel@tonic-gate 521*7c478bd9Sstevel@tonic-gate if (vp == NULL) { 522*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 523*7c478bd9Sstevel@tonic-gate dev_t dev; 524*7c478bd9Sstevel@tonic-gate int spec_type; 525*7c478bd9Sstevel@tonic-gate 526*7c478bd9Sstevel@tonic-gate /* 527*7c478bd9Sstevel@tonic-gate * Root is not mounted, the minor node is not specified, 528*7c478bd9Sstevel@tonic-gate * or an OBP path has been specified. 529*7c478bd9Sstevel@tonic-gate */ 530*7c478bd9Sstevel@tonic-gate 531*7c478bd9Sstevel@tonic-gate /* 532*7c478bd9Sstevel@tonic-gate * Determine if path can be pruned to produce an 533*7c478bd9Sstevel@tonic-gate * OBP or devfs path for resolve_pathname. 534*7c478bd9Sstevel@tonic-gate */ 535*7c478bd9Sstevel@tonic-gate if (strncmp(path, "/devices/", 9) == 0) 536*7c478bd9Sstevel@tonic-gate path += strlen("/devices"); 537*7c478bd9Sstevel@tonic-gate 538*7c478bd9Sstevel@tonic-gate /* 539*7c478bd9Sstevel@tonic-gate * if no minor node was specified the DEFAULT minor node 540*7c478bd9Sstevel@tonic-gate * will be returned. if there is no DEFAULT minor node 541*7c478bd9Sstevel@tonic-gate * one will be fabricated of type S_IFCHR with the minor 542*7c478bd9Sstevel@tonic-gate * number equal to the instance number. 543*7c478bd9Sstevel@tonic-gate */ 544*7c478bd9Sstevel@tonic-gate ret = resolve_pathname(path, &dip, &dev, &spec_type); 545*7c478bd9Sstevel@tonic-gate if (ret != 0) 546*7c478bd9Sstevel@tonic-gate return (ENODEV); 547*7c478bd9Sstevel@tonic-gate 548*7c478bd9Sstevel@tonic-gate ASSERT(STYP_VALID(spec_type)); 549*7c478bd9Sstevel@tonic-gate vp = makespecvp(dev, STYP_TO_VTYP(spec_type)); 550*7c478bd9Sstevel@tonic-gate spec_assoc_vp_with_devi(vp, dip); 551*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 552*7c478bd9Sstevel@tonic-gate } 553*7c478bd9Sstevel@tonic-gate 554*7c478bd9Sstevel@tonic-gate *vpp = vp; 555*7c478bd9Sstevel@tonic-gate return (0); 556*7c478bd9Sstevel@tonic-gate } 557*7c478bd9Sstevel@tonic-gate 558*7c478bd9Sstevel@tonic-gate static int 559*7c478bd9Sstevel@tonic-gate ldi_devid_match(ddi_devid_t devid, dev_info_t *dip, dev_t dev) 560*7c478bd9Sstevel@tonic-gate { 561*7c478bd9Sstevel@tonic-gate char *devidstr; 562*7c478bd9Sstevel@tonic-gate ddi_prop_t *propp; 563*7c478bd9Sstevel@tonic-gate 564*7c478bd9Sstevel@tonic-gate /* convert devid as a string property */ 565*7c478bd9Sstevel@tonic-gate if ((devidstr = ddi_devid_str_encode(devid, NULL)) == NULL) 566*7c478bd9Sstevel@tonic-gate return (0); 567*7c478bd9Sstevel@tonic-gate 568*7c478bd9Sstevel@tonic-gate /* 569*7c478bd9Sstevel@tonic-gate * Search for the devid. For speed and ease in locking this 570*7c478bd9Sstevel@tonic-gate * code directly uses the property implementation. See 571*7c478bd9Sstevel@tonic-gate * ddi_common_devid_to_devlist() for a comment as to why. 572*7c478bd9Sstevel@tonic-gate */ 573*7c478bd9Sstevel@tonic-gate mutex_enter(&(DEVI(dip)->devi_lock)); 574*7c478bd9Sstevel@tonic-gate 575*7c478bd9Sstevel@tonic-gate /* check if there is a DDI_DEV_T_NONE devid property */ 576*7c478bd9Sstevel@tonic-gate propp = i_ddi_prop_search(DDI_DEV_T_NONE, 577*7c478bd9Sstevel@tonic-gate DEVID_PROP_NAME, DEVID_PROP_FLAGS, &DEVI(dip)->devi_hw_prop_ptr); 578*7c478bd9Sstevel@tonic-gate if (propp != NULL) { 579*7c478bd9Sstevel@tonic-gate if (ddi_devid_str_compare(propp->prop_val, devidstr) == 0) { 580*7c478bd9Sstevel@tonic-gate /* a DDI_DEV_T_NONE devid exists and matchs */ 581*7c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 582*7c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 583*7c478bd9Sstevel@tonic-gate return (1); 584*7c478bd9Sstevel@tonic-gate } else { 585*7c478bd9Sstevel@tonic-gate /* a DDI_DEV_T_NONE devid exists and doesn't match */ 586*7c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 587*7c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 588*7c478bd9Sstevel@tonic-gate return (0); 589*7c478bd9Sstevel@tonic-gate } 590*7c478bd9Sstevel@tonic-gate } 591*7c478bd9Sstevel@tonic-gate 592*7c478bd9Sstevel@tonic-gate /* check if there is a devt specific devid property */ 593*7c478bd9Sstevel@tonic-gate propp = i_ddi_prop_search(dev, 594*7c478bd9Sstevel@tonic-gate DEVID_PROP_NAME, DEVID_PROP_FLAGS, &(DEVI(dip)->devi_hw_prop_ptr)); 595*7c478bd9Sstevel@tonic-gate if (propp != NULL) { 596*7c478bd9Sstevel@tonic-gate if (ddi_devid_str_compare(propp->prop_val, devidstr) == 0) { 597*7c478bd9Sstevel@tonic-gate /* a devt specific devid exists and matchs */ 598*7c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 599*7c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 600*7c478bd9Sstevel@tonic-gate return (1); 601*7c478bd9Sstevel@tonic-gate } else { 602*7c478bd9Sstevel@tonic-gate /* a devt specific devid exists and doesn't match */ 603*7c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 604*7c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 605*7c478bd9Sstevel@tonic-gate return (0); 606*7c478bd9Sstevel@tonic-gate } 607*7c478bd9Sstevel@tonic-gate } 608*7c478bd9Sstevel@tonic-gate 609*7c478bd9Sstevel@tonic-gate /* we didn't find any devids associated with the device */ 610*7c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 611*7c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 612*7c478bd9Sstevel@tonic-gate return (0); 613*7c478bd9Sstevel@tonic-gate } 614*7c478bd9Sstevel@tonic-gate 615*7c478bd9Sstevel@tonic-gate /* get a handle to a device by devid and minor name */ 616*7c478bd9Sstevel@tonic-gate static int 617*7c478bd9Sstevel@tonic-gate ldi_vp_from_devid(ddi_devid_t devid, char *minor_name, vnode_t **vpp) 618*7c478bd9Sstevel@tonic-gate { 619*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 620*7c478bd9Sstevel@tonic-gate vnode_t *vp; 621*7c478bd9Sstevel@tonic-gate int ret, i, ndevs, styp; 622*7c478bd9Sstevel@tonic-gate dev_t dev, *devs; 623*7c478bd9Sstevel@tonic-gate 624*7c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 625*7c478bd9Sstevel@tonic-gate if ((devid == NULL) || (minor_name == NULL) || (vpp == NULL)) 626*7c478bd9Sstevel@tonic-gate return (EINVAL); 627*7c478bd9Sstevel@tonic-gate 628*7c478bd9Sstevel@tonic-gate ret = ddi_lyr_devid_to_devlist(devid, minor_name, &ndevs, &devs); 629*7c478bd9Sstevel@tonic-gate if ((ret != DDI_SUCCESS) || (ndevs <= 0)) 630*7c478bd9Sstevel@tonic-gate return (ENODEV); 631*7c478bd9Sstevel@tonic-gate 632*7c478bd9Sstevel@tonic-gate for (i = 0; i < ndevs; i++) { 633*7c478bd9Sstevel@tonic-gate dev = devs[i]; 634*7c478bd9Sstevel@tonic-gate 635*7c478bd9Sstevel@tonic-gate if ((dip = e_ddi_hold_devi_by_dev(dev, 0)) == NULL) 636*7c478bd9Sstevel@tonic-gate continue; 637*7c478bd9Sstevel@tonic-gate 638*7c478bd9Sstevel@tonic-gate /* 639*7c478bd9Sstevel@tonic-gate * now we have to verify that the devid of the disk 640*7c478bd9Sstevel@tonic-gate * still matches what was requested. 641*7c478bd9Sstevel@tonic-gate * 642*7c478bd9Sstevel@tonic-gate * we have to do this because the devid could have 643*7c478bd9Sstevel@tonic-gate * changed between the call to ddi_lyr_devid_to_devlist() 644*7c478bd9Sstevel@tonic-gate * and e_ddi_hold_devi_by_dev(). this is because when 645*7c478bd9Sstevel@tonic-gate * ddi_lyr_devid_to_devlist() returns a list of devts 646*7c478bd9Sstevel@tonic-gate * there is no kind of hold on those devts so a device 647*7c478bd9Sstevel@tonic-gate * could have been replaced out from under us in the 648*7c478bd9Sstevel@tonic-gate * interim. 649*7c478bd9Sstevel@tonic-gate */ 650*7c478bd9Sstevel@tonic-gate if ((i_ddi_minorname_to_devtspectype(dip, minor_name, 651*7c478bd9Sstevel@tonic-gate NULL, &styp) == DDI_SUCCESS) && 652*7c478bd9Sstevel@tonic-gate ldi_devid_match(devid, dip, dev)) 653*7c478bd9Sstevel@tonic-gate break; 654*7c478bd9Sstevel@tonic-gate 655*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev() */ 656*7c478bd9Sstevel@tonic-gate } 657*7c478bd9Sstevel@tonic-gate 658*7c478bd9Sstevel@tonic-gate ddi_lyr_free_devlist(devs, ndevs); 659*7c478bd9Sstevel@tonic-gate 660*7c478bd9Sstevel@tonic-gate if (i == ndevs) 661*7c478bd9Sstevel@tonic-gate return (ENODEV); 662*7c478bd9Sstevel@tonic-gate 663*7c478bd9Sstevel@tonic-gate ASSERT(STYP_VALID(styp)); 664*7c478bd9Sstevel@tonic-gate vp = makespecvp(dev, STYP_TO_VTYP(styp)); 665*7c478bd9Sstevel@tonic-gate spec_assoc_vp_with_devi(vp, dip); 666*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev */ 667*7c478bd9Sstevel@tonic-gate 668*7c478bd9Sstevel@tonic-gate *vpp = vp; 669*7c478bd9Sstevel@tonic-gate return (0); 670*7c478bd9Sstevel@tonic-gate } 671*7c478bd9Sstevel@tonic-gate 672*7c478bd9Sstevel@tonic-gate /* given a vnode, open a device */ 673*7c478bd9Sstevel@tonic-gate static int 674*7c478bd9Sstevel@tonic-gate ldi_open_by_vp(vnode_t **vpp, int flag, cred_t *cr, 675*7c478bd9Sstevel@tonic-gate ldi_handle_t *lhp, struct ldi_ident *li) 676*7c478bd9Sstevel@tonic-gate { 677*7c478bd9Sstevel@tonic-gate struct ldi_handle *nlhp; 678*7c478bd9Sstevel@tonic-gate vnode_t *vp; 679*7c478bd9Sstevel@tonic-gate int err; 680*7c478bd9Sstevel@tonic-gate 681*7c478bd9Sstevel@tonic-gate ASSERT((vpp != NULL) && (*vpp != NULL)); 682*7c478bd9Sstevel@tonic-gate ASSERT((lhp != NULL) && (li != NULL)); 683*7c478bd9Sstevel@tonic-gate 684*7c478bd9Sstevel@tonic-gate vp = *vpp; 685*7c478bd9Sstevel@tonic-gate /* if the vnode passed in is not a device, then bail */ 686*7c478bd9Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops()) || !VTYP_VALID(vp->v_type)) 687*7c478bd9Sstevel@tonic-gate return (ENXIO); 688*7c478bd9Sstevel@tonic-gate 689*7c478bd9Sstevel@tonic-gate /* 690*7c478bd9Sstevel@tonic-gate * the caller may have specified a node that 691*7c478bd9Sstevel@tonic-gate * doesn't have cb_ops defined. the ldi doesn't yet 692*7c478bd9Sstevel@tonic-gate * support opening devices without a valid cb_ops. 693*7c478bd9Sstevel@tonic-gate */ 694*7c478bd9Sstevel@tonic-gate if (devopsp[getmajor(vp->v_rdev)]->devo_cb_ops == NULL) 695*7c478bd9Sstevel@tonic-gate return (ENXIO); 696*7c478bd9Sstevel@tonic-gate 697*7c478bd9Sstevel@tonic-gate /* open the device */ 698*7c478bd9Sstevel@tonic-gate if ((err = VOP_OPEN(&vp, flag | FKLYR, cr)) != 0) 699*7c478bd9Sstevel@tonic-gate return (err); 700*7c478bd9Sstevel@tonic-gate 701*7c478bd9Sstevel@tonic-gate /* possible clone open, make sure that we still have a spec node */ 702*7c478bd9Sstevel@tonic-gate ASSERT(vn_matchops(vp, spec_getvnodeops())); 703*7c478bd9Sstevel@tonic-gate 704*7c478bd9Sstevel@tonic-gate nlhp = handle_alloc(vp, li); 705*7c478bd9Sstevel@tonic-gate 706*7c478bd9Sstevel@tonic-gate if (vp != *vpp) { 707*7c478bd9Sstevel@tonic-gate /* 708*7c478bd9Sstevel@tonic-gate * allocating the layered handle took a new hold on the vnode 709*7c478bd9Sstevel@tonic-gate * so we can release the hold that was returned by the clone 710*7c478bd9Sstevel@tonic-gate * open 711*7c478bd9Sstevel@tonic-gate */ 712*7c478bd9Sstevel@tonic-gate LDI_OPENCLOSE((CE_WARN, "%s: lh=0x%p", 713*7c478bd9Sstevel@tonic-gate "ldi clone open", (void *)nlhp)); 714*7c478bd9Sstevel@tonic-gate } else { 715*7c478bd9Sstevel@tonic-gate LDI_OPENCLOSE((CE_WARN, "%s: lh=0x%p", 716*7c478bd9Sstevel@tonic-gate "ldi open", (void *)nlhp)); 717*7c478bd9Sstevel@tonic-gate } 718*7c478bd9Sstevel@tonic-gate 719*7c478bd9Sstevel@tonic-gate /* Flush back any dirty pages associated with the device. */ 720*7c478bd9Sstevel@tonic-gate if (nlhp->lh_type & LH_CBDEV) { 721*7c478bd9Sstevel@tonic-gate vnode_t *cvp = common_specvp(nlhp->lh_vp); 722*7c478bd9Sstevel@tonic-gate dev_t dev = cvp->v_rdev; 723*7c478bd9Sstevel@tonic-gate 724*7c478bd9Sstevel@tonic-gate (void) VOP_PUTPAGE(cvp, 0, 0, B_INVAL, kcred); 725*7c478bd9Sstevel@tonic-gate bflush(dev); 726*7c478bd9Sstevel@tonic-gate } 727*7c478bd9Sstevel@tonic-gate 728*7c478bd9Sstevel@tonic-gate *vpp = vp; 729*7c478bd9Sstevel@tonic-gate *lhp = (ldi_handle_t)nlhp; 730*7c478bd9Sstevel@tonic-gate return (0); 731*7c478bd9Sstevel@tonic-gate } 732*7c478bd9Sstevel@tonic-gate 733*7c478bd9Sstevel@tonic-gate /* Call a drivers prop_op(9E) interface */ 734*7c478bd9Sstevel@tonic-gate static int 735*7c478bd9Sstevel@tonic-gate i_ldi_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, 736*7c478bd9Sstevel@tonic-gate int flags, char *name, caddr_t valuep, int *lengthp) 737*7c478bd9Sstevel@tonic-gate { 738*7c478bd9Sstevel@tonic-gate struct dev_ops *ops = NULL; 739*7c478bd9Sstevel@tonic-gate int res; 740*7c478bd9Sstevel@tonic-gate 741*7c478bd9Sstevel@tonic-gate ASSERT((dip != NULL) && (name != NULL)); 742*7c478bd9Sstevel@tonic-gate ASSERT((prop_op == PROP_LEN) || (valuep != NULL)); 743*7c478bd9Sstevel@tonic-gate ASSERT(lengthp != NULL); 744*7c478bd9Sstevel@tonic-gate 745*7c478bd9Sstevel@tonic-gate /* 746*7c478bd9Sstevel@tonic-gate * we can only be invoked after a driver has been opened and 747*7c478bd9Sstevel@tonic-gate * someone has a layered handle to it, so there had better be 748*7c478bd9Sstevel@tonic-gate * a valid ops vector. 749*7c478bd9Sstevel@tonic-gate */ 750*7c478bd9Sstevel@tonic-gate ops = DEVI(dip)->devi_ops; 751*7c478bd9Sstevel@tonic-gate ASSERT(ops && ops->devo_cb_ops); 752*7c478bd9Sstevel@tonic-gate 753*7c478bd9Sstevel@tonic-gate /* 754*7c478bd9Sstevel@tonic-gate * Some nexus drivers incorrectly set cb_prop_op to nodev, 755*7c478bd9Sstevel@tonic-gate * nulldev or even NULL. 756*7c478bd9Sstevel@tonic-gate */ 757*7c478bd9Sstevel@tonic-gate if ((ops->devo_cb_ops->cb_prop_op == nodev) || 758*7c478bd9Sstevel@tonic-gate (ops->devo_cb_ops->cb_prop_op == nulldev) || 759*7c478bd9Sstevel@tonic-gate (ops->devo_cb_ops->cb_prop_op == NULL)) { 760*7c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 761*7c478bd9Sstevel@tonic-gate } 762*7c478bd9Sstevel@tonic-gate 763*7c478bd9Sstevel@tonic-gate /* check if this is actually DDI_DEV_T_ANY query */ 764*7c478bd9Sstevel@tonic-gate if (flags & LDI_DEV_T_ANY) { 765*7c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 766*7c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 767*7c478bd9Sstevel@tonic-gate } 768*7c478bd9Sstevel@tonic-gate 769*7c478bd9Sstevel@tonic-gate res = cdev_prop_op(dev, dip, prop_op, flags, name, valuep, lengthp); 770*7c478bd9Sstevel@tonic-gate return (res); 771*7c478bd9Sstevel@tonic-gate } 772*7c478bd9Sstevel@tonic-gate 773*7c478bd9Sstevel@tonic-gate static void 774*7c478bd9Sstevel@tonic-gate i_ldi_prop_op_free(struct prop_driver_data *pdd) 775*7c478bd9Sstevel@tonic-gate { 776*7c478bd9Sstevel@tonic-gate kmem_free(pdd, pdd->pdd_size); 777*7c478bd9Sstevel@tonic-gate } 778*7c478bd9Sstevel@tonic-gate 779*7c478bd9Sstevel@tonic-gate static caddr_t 780*7c478bd9Sstevel@tonic-gate i_ldi_prop_op_alloc(int prop_len) 781*7c478bd9Sstevel@tonic-gate { 782*7c478bd9Sstevel@tonic-gate struct prop_driver_data *pdd; 783*7c478bd9Sstevel@tonic-gate int pdd_size; 784*7c478bd9Sstevel@tonic-gate 785*7c478bd9Sstevel@tonic-gate pdd_size = sizeof (struct prop_driver_data) + prop_len; 786*7c478bd9Sstevel@tonic-gate pdd = kmem_alloc(pdd_size, KM_SLEEP); 787*7c478bd9Sstevel@tonic-gate pdd->pdd_size = pdd_size; 788*7c478bd9Sstevel@tonic-gate pdd->pdd_prop_free = i_ldi_prop_op_free; 789*7c478bd9Sstevel@tonic-gate return ((caddr_t)&pdd[1]); 790*7c478bd9Sstevel@tonic-gate } 791*7c478bd9Sstevel@tonic-gate 792*7c478bd9Sstevel@tonic-gate /* 793*7c478bd9Sstevel@tonic-gate * i_ldi_prop_op_typed() is a wrapper for i_ldi_prop_op that is used 794*7c478bd9Sstevel@tonic-gate * by the typed ldi property lookup interfaces. 795*7c478bd9Sstevel@tonic-gate */ 796*7c478bd9Sstevel@tonic-gate static int 797*7c478bd9Sstevel@tonic-gate i_ldi_prop_op_typed(dev_t dev, dev_info_t *dip, int flags, char *name, 798*7c478bd9Sstevel@tonic-gate caddr_t *datap, int *lengthp, int elem_size) 799*7c478bd9Sstevel@tonic-gate { 800*7c478bd9Sstevel@tonic-gate caddr_t prop_val; 801*7c478bd9Sstevel@tonic-gate int prop_len, res; 802*7c478bd9Sstevel@tonic-gate 803*7c478bd9Sstevel@tonic-gate ASSERT((dip != NULL) && (name != NULL)); 804*7c478bd9Sstevel@tonic-gate ASSERT((datap != NULL) && (lengthp != NULL)); 805*7c478bd9Sstevel@tonic-gate 806*7c478bd9Sstevel@tonic-gate /* 807*7c478bd9Sstevel@tonic-gate * first call the drivers prop_op() interface to allow it 808*7c478bd9Sstevel@tonic-gate * it to override default property values. 809*7c478bd9Sstevel@tonic-gate */ 810*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN, 811*7c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, NULL, &prop_len); 812*7c478bd9Sstevel@tonic-gate if (res != DDI_PROP_SUCCESS) 813*7c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 814*7c478bd9Sstevel@tonic-gate 815*7c478bd9Sstevel@tonic-gate /* sanity check the property length */ 816*7c478bd9Sstevel@tonic-gate if (prop_len == 0) { 817*7c478bd9Sstevel@tonic-gate /* 818*7c478bd9Sstevel@tonic-gate * the ddi typed interfaces don't allow a drivers to 819*7c478bd9Sstevel@tonic-gate * create properties with a length of 0. so we should 820*7c478bd9Sstevel@tonic-gate * prevent drivers from returning 0 length dynamic 821*7c478bd9Sstevel@tonic-gate * properties for typed property lookups. 822*7c478bd9Sstevel@tonic-gate */ 823*7c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 824*7c478bd9Sstevel@tonic-gate } 825*7c478bd9Sstevel@tonic-gate 826*7c478bd9Sstevel@tonic-gate /* sanity check the property length against the element size */ 827*7c478bd9Sstevel@tonic-gate if (elem_size && ((prop_len % elem_size) != 0)) 828*7c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 829*7c478bd9Sstevel@tonic-gate 830*7c478bd9Sstevel@tonic-gate /* 831*7c478bd9Sstevel@tonic-gate * got it. now allocate a prop_driver_data struct so that the 832*7c478bd9Sstevel@tonic-gate * user can free the property via ddi_prop_free(). 833*7c478bd9Sstevel@tonic-gate */ 834*7c478bd9Sstevel@tonic-gate prop_val = i_ldi_prop_op_alloc(prop_len); 835*7c478bd9Sstevel@tonic-gate 836*7c478bd9Sstevel@tonic-gate /* lookup the property again, this time get the value */ 837*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN_AND_VAL_BUF, 838*7c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, prop_val, &prop_len); 839*7c478bd9Sstevel@tonic-gate if (res != DDI_PROP_SUCCESS) { 840*7c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 841*7c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 842*7c478bd9Sstevel@tonic-gate } 843*7c478bd9Sstevel@tonic-gate 844*7c478bd9Sstevel@tonic-gate /* sanity check the property length */ 845*7c478bd9Sstevel@tonic-gate if (prop_len == 0) { 846*7c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 847*7c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 848*7c478bd9Sstevel@tonic-gate } 849*7c478bd9Sstevel@tonic-gate 850*7c478bd9Sstevel@tonic-gate /* sanity check the property length against the element size */ 851*7c478bd9Sstevel@tonic-gate if (elem_size && ((prop_len % elem_size) != 0)) { 852*7c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 853*7c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 854*7c478bd9Sstevel@tonic-gate } 855*7c478bd9Sstevel@tonic-gate 856*7c478bd9Sstevel@tonic-gate /* 857*7c478bd9Sstevel@tonic-gate * return the prop_driver_data struct and, optionally, the length 858*7c478bd9Sstevel@tonic-gate * of the data. 859*7c478bd9Sstevel@tonic-gate */ 860*7c478bd9Sstevel@tonic-gate *datap = prop_val; 861*7c478bd9Sstevel@tonic-gate *lengthp = prop_len; 862*7c478bd9Sstevel@tonic-gate 863*7c478bd9Sstevel@tonic-gate return (DDI_PROP_SUCCESS); 864*7c478bd9Sstevel@tonic-gate } 865*7c478bd9Sstevel@tonic-gate 866*7c478bd9Sstevel@tonic-gate /* 867*7c478bd9Sstevel@tonic-gate * i_check_string looks at a string property and makes sure its 868*7c478bd9Sstevel@tonic-gate * a valid null terminated string 869*7c478bd9Sstevel@tonic-gate */ 870*7c478bd9Sstevel@tonic-gate static int 871*7c478bd9Sstevel@tonic-gate i_check_string(char *str, int prop_len) 872*7c478bd9Sstevel@tonic-gate { 873*7c478bd9Sstevel@tonic-gate int i; 874*7c478bd9Sstevel@tonic-gate 875*7c478bd9Sstevel@tonic-gate ASSERT(str != NULL); 876*7c478bd9Sstevel@tonic-gate 877*7c478bd9Sstevel@tonic-gate for (i = 0; i < prop_len; i++) { 878*7c478bd9Sstevel@tonic-gate if (str[i] == '\0') 879*7c478bd9Sstevel@tonic-gate return (0); 880*7c478bd9Sstevel@tonic-gate } 881*7c478bd9Sstevel@tonic-gate return (1); 882*7c478bd9Sstevel@tonic-gate } 883*7c478bd9Sstevel@tonic-gate 884*7c478bd9Sstevel@tonic-gate /* 885*7c478bd9Sstevel@tonic-gate * i_pack_string_array takes a a string array property that is represented 886*7c478bd9Sstevel@tonic-gate * as a concatination of strings (with the NULL character included for 887*7c478bd9Sstevel@tonic-gate * each string) and converts it into a format that can be returned by 888*7c478bd9Sstevel@tonic-gate * ldi_prop_lookup_string_array. 889*7c478bd9Sstevel@tonic-gate */ 890*7c478bd9Sstevel@tonic-gate static int 891*7c478bd9Sstevel@tonic-gate i_pack_string_array(char *str_concat, int prop_len, 892*7c478bd9Sstevel@tonic-gate char ***str_arrayp, int *nelemp) 893*7c478bd9Sstevel@tonic-gate { 894*7c478bd9Sstevel@tonic-gate int i, nelem, pack_size; 895*7c478bd9Sstevel@tonic-gate char **str_array, *strptr; 896*7c478bd9Sstevel@tonic-gate 897*7c478bd9Sstevel@tonic-gate /* 898*7c478bd9Sstevel@tonic-gate * first we need to sanity check the input string array. 899*7c478bd9Sstevel@tonic-gate * in essence this can be done my making sure that the last 900*7c478bd9Sstevel@tonic-gate * character of the array passed in is null. (meaning the last 901*7c478bd9Sstevel@tonic-gate * string in the array is NULL terminated. 902*7c478bd9Sstevel@tonic-gate */ 903*7c478bd9Sstevel@tonic-gate if (str_concat[prop_len - 1] != '\0') 904*7c478bd9Sstevel@tonic-gate return (1); 905*7c478bd9Sstevel@tonic-gate 906*7c478bd9Sstevel@tonic-gate /* now let's count the number of strings in the array */ 907*7c478bd9Sstevel@tonic-gate for (nelem = i = 0; i < prop_len; i++) 908*7c478bd9Sstevel@tonic-gate if (str_concat[i] == '\0') 909*7c478bd9Sstevel@tonic-gate nelem++; 910*7c478bd9Sstevel@tonic-gate ASSERT(nelem >= 1); 911*7c478bd9Sstevel@tonic-gate 912*7c478bd9Sstevel@tonic-gate /* now let's allocate memory for the new packed property */ 913*7c478bd9Sstevel@tonic-gate pack_size = (sizeof (char *) * (nelem + 1)) + prop_len; 914*7c478bd9Sstevel@tonic-gate str_array = (char **)i_ldi_prop_op_alloc(pack_size); 915*7c478bd9Sstevel@tonic-gate 916*7c478bd9Sstevel@tonic-gate /* let's copy the actual string data into the new property */ 917*7c478bd9Sstevel@tonic-gate strptr = (char *)&(str_array[nelem + 1]); 918*7c478bd9Sstevel@tonic-gate bcopy(str_concat, strptr, prop_len); 919*7c478bd9Sstevel@tonic-gate 920*7c478bd9Sstevel@tonic-gate /* now initialize the string array pointers */ 921*7c478bd9Sstevel@tonic-gate for (i = 0; i < nelem; i++) { 922*7c478bd9Sstevel@tonic-gate str_array[i] = strptr; 923*7c478bd9Sstevel@tonic-gate strptr += strlen(strptr) + 1; 924*7c478bd9Sstevel@tonic-gate } 925*7c478bd9Sstevel@tonic-gate str_array[nelem] = NULL; 926*7c478bd9Sstevel@tonic-gate 927*7c478bd9Sstevel@tonic-gate /* set the return values */ 928*7c478bd9Sstevel@tonic-gate *str_arrayp = str_array; 929*7c478bd9Sstevel@tonic-gate *nelemp = nelem; 930*7c478bd9Sstevel@tonic-gate 931*7c478bd9Sstevel@tonic-gate return (0); 932*7c478bd9Sstevel@tonic-gate } 933*7c478bd9Sstevel@tonic-gate 934*7c478bd9Sstevel@tonic-gate 935*7c478bd9Sstevel@tonic-gate /* 936*7c478bd9Sstevel@tonic-gate * LDI Project private device usage interfaces 937*7c478bd9Sstevel@tonic-gate */ 938*7c478bd9Sstevel@tonic-gate 939*7c478bd9Sstevel@tonic-gate /* 940*7c478bd9Sstevel@tonic-gate * Get a count of how many devices are currentl open by different consumers 941*7c478bd9Sstevel@tonic-gate */ 942*7c478bd9Sstevel@tonic-gate int 943*7c478bd9Sstevel@tonic-gate ldi_usage_count() 944*7c478bd9Sstevel@tonic-gate { 945*7c478bd9Sstevel@tonic-gate return (ldi_handle_hash_count); 946*7c478bd9Sstevel@tonic-gate } 947*7c478bd9Sstevel@tonic-gate 948*7c478bd9Sstevel@tonic-gate static void 949*7c478bd9Sstevel@tonic-gate ldi_usage_walker_tgt_helper(ldi_usage_t *ldi_usage, vnode_t *vp) 950*7c478bd9Sstevel@tonic-gate { 951*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 952*7c478bd9Sstevel@tonic-gate dev_t dev; 953*7c478bd9Sstevel@tonic-gate 954*7c478bd9Sstevel@tonic-gate ASSERT(STYP_VALID(VTYP_TO_STYP(vp->v_type))); 955*7c478bd9Sstevel@tonic-gate 956*7c478bd9Sstevel@tonic-gate /* get the target devt */ 957*7c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 958*7c478bd9Sstevel@tonic-gate 959*7c478bd9Sstevel@tonic-gate /* try to get the target dip */ 960*7c478bd9Sstevel@tonic-gate dip = VTOCS(vp)->s_dip; 961*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 962*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 963*7c478bd9Sstevel@tonic-gate } else if (dev != DDI_DEV_T_NONE) { 964*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 965*7c478bd9Sstevel@tonic-gate } 966*7c478bd9Sstevel@tonic-gate 967*7c478bd9Sstevel@tonic-gate /* set the target information */ 968*7c478bd9Sstevel@tonic-gate ldi_usage->tgt_name = mod_major_to_name(getmajor(dev)); 969*7c478bd9Sstevel@tonic-gate ldi_usage->tgt_modid = mod_name_to_modid(ldi_usage->tgt_name); 970*7c478bd9Sstevel@tonic-gate ldi_usage->tgt_devt = dev; 971*7c478bd9Sstevel@tonic-gate ldi_usage->tgt_spec_type = VTYP_TO_STYP(vp->v_type); 972*7c478bd9Sstevel@tonic-gate ldi_usage->tgt_dip = dip; 973*7c478bd9Sstevel@tonic-gate } 974*7c478bd9Sstevel@tonic-gate 975*7c478bd9Sstevel@tonic-gate 976*7c478bd9Sstevel@tonic-gate static int 977*7c478bd9Sstevel@tonic-gate ldi_usage_walker_helper(struct ldi_ident *lip, vnode_t *vp, 978*7c478bd9Sstevel@tonic-gate void *arg, int (*callback)(const ldi_usage_t *, void *)) 979*7c478bd9Sstevel@tonic-gate { 980*7c478bd9Sstevel@tonic-gate ldi_usage_t ldi_usage; 981*7c478bd9Sstevel@tonic-gate struct devnames *dnp; 982*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 983*7c478bd9Sstevel@tonic-gate major_t major; 984*7c478bd9Sstevel@tonic-gate dev_t dev; 985*7c478bd9Sstevel@tonic-gate int ret = LDI_USAGE_CONTINUE; 986*7c478bd9Sstevel@tonic-gate 987*7c478bd9Sstevel@tonic-gate /* set the target device information */ 988*7c478bd9Sstevel@tonic-gate ldi_usage_walker_tgt_helper(&ldi_usage, vp); 989*7c478bd9Sstevel@tonic-gate 990*7c478bd9Sstevel@tonic-gate /* get the source devt */ 991*7c478bd9Sstevel@tonic-gate dev = lip->li_dev; 992*7c478bd9Sstevel@tonic-gate 993*7c478bd9Sstevel@tonic-gate /* try to get the source dip */ 994*7c478bd9Sstevel@tonic-gate dip = lip->li_dip; 995*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 996*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 997*7c478bd9Sstevel@tonic-gate } else if (dev != DDI_DEV_T_NONE) { 998*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 999*7c478bd9Sstevel@tonic-gate } 1000*7c478bd9Sstevel@tonic-gate 1001*7c478bd9Sstevel@tonic-gate /* set the valid source information */ 1002*7c478bd9Sstevel@tonic-gate ldi_usage.src_modid = lip->li_modid; 1003*7c478bd9Sstevel@tonic-gate ldi_usage.src_name = lip->li_modname; 1004*7c478bd9Sstevel@tonic-gate ldi_usage.src_devt = dev; 1005*7c478bd9Sstevel@tonic-gate ldi_usage.src_dip = dip; 1006*7c478bd9Sstevel@tonic-gate 1007*7c478bd9Sstevel@tonic-gate /* 1008*7c478bd9Sstevel@tonic-gate * if the source ident represents either: 1009*7c478bd9Sstevel@tonic-gate * 1010*7c478bd9Sstevel@tonic-gate * - a kernel module (and not a device or device driver) 1011*7c478bd9Sstevel@tonic-gate * - a device node 1012*7c478bd9Sstevel@tonic-gate * 1013*7c478bd9Sstevel@tonic-gate * then we currently have all the info we need to report the 1014*7c478bd9Sstevel@tonic-gate * usage information so invoke the callback function. 1015*7c478bd9Sstevel@tonic-gate */ 1016*7c478bd9Sstevel@tonic-gate if (((lip->li_major == -1) && (dev == DDI_DEV_T_NONE)) || 1017*7c478bd9Sstevel@tonic-gate (dip != NULL)) { 1018*7c478bd9Sstevel@tonic-gate ret = callback(&ldi_usage, arg); 1019*7c478bd9Sstevel@tonic-gate if (dip != NULL) 1020*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 1021*7c478bd9Sstevel@tonic-gate if (ldi_usage.tgt_dip != NULL) 1022*7c478bd9Sstevel@tonic-gate ddi_release_devi(ldi_usage.tgt_dip); 1023*7c478bd9Sstevel@tonic-gate return (ret); 1024*7c478bd9Sstevel@tonic-gate } 1025*7c478bd9Sstevel@tonic-gate 1026*7c478bd9Sstevel@tonic-gate /* 1027*7c478bd9Sstevel@tonic-gate * now this is kinda gross. 1028*7c478bd9Sstevel@tonic-gate * 1029*7c478bd9Sstevel@tonic-gate * what we do here is attempt to associate every device instance 1030*7c478bd9Sstevel@tonic-gate * of the source driver on the system with the open target driver. 1031*7c478bd9Sstevel@tonic-gate * we do this because we don't know which instance of the device 1032*7c478bd9Sstevel@tonic-gate * could potentially access the lower device so we assume that all 1033*7c478bd9Sstevel@tonic-gate * the instances could access it. 1034*7c478bd9Sstevel@tonic-gate * 1035*7c478bd9Sstevel@tonic-gate * there are two ways we could have gotten here: 1036*7c478bd9Sstevel@tonic-gate * 1037*7c478bd9Sstevel@tonic-gate * 1) this layered ident represents one created using only a 1038*7c478bd9Sstevel@tonic-gate * major number or a driver module name. this means that when 1039*7c478bd9Sstevel@tonic-gate * it was created we could not associate it with a particular 1040*7c478bd9Sstevel@tonic-gate * dev_t or device instance. 1041*7c478bd9Sstevel@tonic-gate * 1042*7c478bd9Sstevel@tonic-gate * when could this possibly happen you ask? 1043*7c478bd9Sstevel@tonic-gate * 1044*7c478bd9Sstevel@tonic-gate * a perfect example of this is streams persistent links. 1045*7c478bd9Sstevel@tonic-gate * when a persistant streams link is formed we can't associate 1046*7c478bd9Sstevel@tonic-gate * the lower device stream with any particular upper device 1047*7c478bd9Sstevel@tonic-gate * stream or instance. this is because any particular upper 1048*7c478bd9Sstevel@tonic-gate * device stream could be closed, then another could be 1049*7c478bd9Sstevel@tonic-gate * opened with a different dev_t and device instance, and it 1050*7c478bd9Sstevel@tonic-gate * would still have access to the lower linked stream. 1051*7c478bd9Sstevel@tonic-gate * 1052*7c478bd9Sstevel@tonic-gate * since any instance of the upper streams driver could 1053*7c478bd9Sstevel@tonic-gate * potentially access the lower stream whenever it wants, 1054*7c478bd9Sstevel@tonic-gate * we represent that here by associating the opened lower 1055*7c478bd9Sstevel@tonic-gate * device with every existing device instance of the upper 1056*7c478bd9Sstevel@tonic-gate * streams driver. 1057*7c478bd9Sstevel@tonic-gate * 1058*7c478bd9Sstevel@tonic-gate * 2) This case should really never happen but we'll include it 1059*7c478bd9Sstevel@tonic-gate * for completeness. 1060*7c478bd9Sstevel@tonic-gate * 1061*7c478bd9Sstevel@tonic-gate * it's possible that we could have gotten here because we 1062*7c478bd9Sstevel@tonic-gate * have a dev_t for the upper device but we couldn't find a 1063*7c478bd9Sstevel@tonic-gate * dip associated with that dev_t. 1064*7c478bd9Sstevel@tonic-gate * 1065*7c478bd9Sstevel@tonic-gate * the only types of devices that have dev_t without an 1066*7c478bd9Sstevel@tonic-gate * associated dip are unbound DLPIv2 network devices. These 1067*7c478bd9Sstevel@tonic-gate * types of devices exist to be able to attach a stream to any 1068*7c478bd9Sstevel@tonic-gate * instance of a hardware network device. since these types of 1069*7c478bd9Sstevel@tonic-gate * devices are usually hardware devices they should never 1070*7c478bd9Sstevel@tonic-gate * really have other devices open. 1071*7c478bd9Sstevel@tonic-gate */ 1072*7c478bd9Sstevel@tonic-gate if (dev != DDI_DEV_T_NONE) 1073*7c478bd9Sstevel@tonic-gate major = getmajor(dev); 1074*7c478bd9Sstevel@tonic-gate else 1075*7c478bd9Sstevel@tonic-gate major = lip->li_major; 1076*7c478bd9Sstevel@tonic-gate 1077*7c478bd9Sstevel@tonic-gate ASSERT((major >= 0) && (major < devcnt)); 1078*7c478bd9Sstevel@tonic-gate 1079*7c478bd9Sstevel@tonic-gate dnp = &devnamesp[major]; 1080*7c478bd9Sstevel@tonic-gate LOCK_DEV_OPS(&dnp->dn_lock); 1081*7c478bd9Sstevel@tonic-gate dip = dnp->dn_head; 1082*7c478bd9Sstevel@tonic-gate while ((dip) && (ret == LDI_USAGE_CONTINUE)) { 1083*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 1084*7c478bd9Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock); 1085*7c478bd9Sstevel@tonic-gate 1086*7c478bd9Sstevel@tonic-gate /* set the source dip */ 1087*7c478bd9Sstevel@tonic-gate ldi_usage.src_dip = dip; 1088*7c478bd9Sstevel@tonic-gate 1089*7c478bd9Sstevel@tonic-gate /* invoke the callback function */ 1090*7c478bd9Sstevel@tonic-gate ret = callback(&ldi_usage, arg); 1091*7c478bd9Sstevel@tonic-gate 1092*7c478bd9Sstevel@tonic-gate LOCK_DEV_OPS(&dnp->dn_lock); 1093*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 1094*7c478bd9Sstevel@tonic-gate dip = ddi_get_next(dip); 1095*7c478bd9Sstevel@tonic-gate } 1096*7c478bd9Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock); 1097*7c478bd9Sstevel@tonic-gate 1098*7c478bd9Sstevel@tonic-gate /* if there was a target dip, release it */ 1099*7c478bd9Sstevel@tonic-gate if (ldi_usage.tgt_dip != NULL) 1100*7c478bd9Sstevel@tonic-gate ddi_release_devi(ldi_usage.tgt_dip); 1101*7c478bd9Sstevel@tonic-gate 1102*7c478bd9Sstevel@tonic-gate return (ret); 1103*7c478bd9Sstevel@tonic-gate } 1104*7c478bd9Sstevel@tonic-gate 1105*7c478bd9Sstevel@tonic-gate /* 1106*7c478bd9Sstevel@tonic-gate * ldi_usage_walker() - this walker reports LDI kernel device usage 1107*7c478bd9Sstevel@tonic-gate * information via the callback() callback function. the LDI keeps track 1108*7c478bd9Sstevel@tonic-gate * of what devices are being accessed in its own internal data structures. 1109*7c478bd9Sstevel@tonic-gate * this function walks those data structures to determine device usage. 1110*7c478bd9Sstevel@tonic-gate */ 1111*7c478bd9Sstevel@tonic-gate void 1112*7c478bd9Sstevel@tonic-gate ldi_usage_walker(void *arg, int (*callback)(const ldi_usage_t *, void *)) 1113*7c478bd9Sstevel@tonic-gate { 1114*7c478bd9Sstevel@tonic-gate struct ldi_handle *lhp; 1115*7c478bd9Sstevel@tonic-gate struct ldi_ident *lip; 1116*7c478bd9Sstevel@tonic-gate vnode_t *vp; 1117*7c478bd9Sstevel@tonic-gate int i; 1118*7c478bd9Sstevel@tonic-gate int ret = LDI_USAGE_CONTINUE; 1119*7c478bd9Sstevel@tonic-gate 1120*7c478bd9Sstevel@tonic-gate for (i = 0; i < LH_HASH_SZ; i++) { 1121*7c478bd9Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[i]); 1122*7c478bd9Sstevel@tonic-gate 1123*7c478bd9Sstevel@tonic-gate lhp = ldi_handle_hash[i]; 1124*7c478bd9Sstevel@tonic-gate while ((lhp != NULL) && (ret == LDI_USAGE_CONTINUE)) { 1125*7c478bd9Sstevel@tonic-gate lip = lhp->lh_ident; 1126*7c478bd9Sstevel@tonic-gate vp = lhp->lh_vp; 1127*7c478bd9Sstevel@tonic-gate 1128*7c478bd9Sstevel@tonic-gate /* invoke the devinfo callback function */ 1129*7c478bd9Sstevel@tonic-gate ret = ldi_usage_walker_helper(lip, vp, arg, callback); 1130*7c478bd9Sstevel@tonic-gate 1131*7c478bd9Sstevel@tonic-gate lhp = lhp->lh_next; 1132*7c478bd9Sstevel@tonic-gate } 1133*7c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[i]); 1134*7c478bd9Sstevel@tonic-gate 1135*7c478bd9Sstevel@tonic-gate if (ret != LDI_USAGE_CONTINUE) 1136*7c478bd9Sstevel@tonic-gate break; 1137*7c478bd9Sstevel@tonic-gate } 1138*7c478bd9Sstevel@tonic-gate } 1139*7c478bd9Sstevel@tonic-gate 1140*7c478bd9Sstevel@tonic-gate /* 1141*7c478bd9Sstevel@tonic-gate * LDI Project private interfaces (streams linking interfaces) 1142*7c478bd9Sstevel@tonic-gate * 1143*7c478bd9Sstevel@tonic-gate * Streams supports a type of built in device layering via linking. 1144*7c478bd9Sstevel@tonic-gate * Certain types of streams drivers can be streams multiplexors. 1145*7c478bd9Sstevel@tonic-gate * A streams multiplexor supports the I_LINK/I_PLINK operation. 1146*7c478bd9Sstevel@tonic-gate * These operations allows other streams devices to be linked under the 1147*7c478bd9Sstevel@tonic-gate * multiplexor. By definition all streams multiplexors are devices 1148*7c478bd9Sstevel@tonic-gate * so this linking is a type of device layering where the multiplexor 1149*7c478bd9Sstevel@tonic-gate * device is layered on top of the device linked below it. 1150*7c478bd9Sstevel@tonic-gate */ 1151*7c478bd9Sstevel@tonic-gate 1152*7c478bd9Sstevel@tonic-gate /* 1153*7c478bd9Sstevel@tonic-gate * ldi_mlink_lh() is invoked when streams are linked using LDI handles. 1154*7c478bd9Sstevel@tonic-gate * It is not used for normal I_LINKs and I_PLINKs using file descriptors. 1155*7c478bd9Sstevel@tonic-gate * 1156*7c478bd9Sstevel@tonic-gate * The streams framework keeps track of links via the file_t of the lower 1157*7c478bd9Sstevel@tonic-gate * stream. The LDI keeps track of devices using a vnode. In the case 1158*7c478bd9Sstevel@tonic-gate * of a streams link created via an LDI handle, fnk_lh() allocates 1159*7c478bd9Sstevel@tonic-gate * a file_t that the streams framework can use to track the linkage. 1160*7c478bd9Sstevel@tonic-gate */ 1161*7c478bd9Sstevel@tonic-gate int 1162*7c478bd9Sstevel@tonic-gate ldi_mlink_lh(vnode_t *vp, int cmd, intptr_t arg, cred_t *crp, int *rvalp) 1163*7c478bd9Sstevel@tonic-gate { 1164*7c478bd9Sstevel@tonic-gate struct ldi_handle *lhp = (struct ldi_handle *)arg; 1165*7c478bd9Sstevel@tonic-gate vnode_t *vpdown; 1166*7c478bd9Sstevel@tonic-gate file_t *fpdown; 1167*7c478bd9Sstevel@tonic-gate int err; 1168*7c478bd9Sstevel@tonic-gate 1169*7c478bd9Sstevel@tonic-gate if (lhp == NULL) 1170*7c478bd9Sstevel@tonic-gate return (EINVAL); 1171*7c478bd9Sstevel@tonic-gate 1172*7c478bd9Sstevel@tonic-gate vpdown = lhp->lh_vp; 1173*7c478bd9Sstevel@tonic-gate ASSERT(vn_matchops(vpdown, spec_getvnodeops())); 1174*7c478bd9Sstevel@tonic-gate ASSERT(cmd == _I_PLINK_LH); 1175*7c478bd9Sstevel@tonic-gate 1176*7c478bd9Sstevel@tonic-gate /* 1177*7c478bd9Sstevel@tonic-gate * create a new lower vnode and a file_t that points to it, 1178*7c478bd9Sstevel@tonic-gate * streams linking requires a file_t. falloc() returns with 1179*7c478bd9Sstevel@tonic-gate * fpdown locked. 1180*7c478bd9Sstevel@tonic-gate */ 1181*7c478bd9Sstevel@tonic-gate VN_HOLD(vpdown); 1182*7c478bd9Sstevel@tonic-gate (void) falloc(vpdown, FREAD|FWRITE, &fpdown, NULL); 1183*7c478bd9Sstevel@tonic-gate mutex_exit(&fpdown->f_tlock); 1184*7c478bd9Sstevel@tonic-gate 1185*7c478bd9Sstevel@tonic-gate /* try to establish the link */ 1186*7c478bd9Sstevel@tonic-gate err = mlink_file(vp, I_PLINK, fpdown, crp, rvalp, 1); 1187*7c478bd9Sstevel@tonic-gate 1188*7c478bd9Sstevel@tonic-gate if (err != 0) { 1189*7c478bd9Sstevel@tonic-gate /* the link failed, free the file_t and release the vnode */ 1190*7c478bd9Sstevel@tonic-gate mutex_enter(&fpdown->f_tlock); 1191*7c478bd9Sstevel@tonic-gate unfalloc(fpdown); 1192*7c478bd9Sstevel@tonic-gate VN_RELE(vpdown); 1193*7c478bd9Sstevel@tonic-gate } 1194*7c478bd9Sstevel@tonic-gate 1195*7c478bd9Sstevel@tonic-gate return (err); 1196*7c478bd9Sstevel@tonic-gate } 1197*7c478bd9Sstevel@tonic-gate 1198*7c478bd9Sstevel@tonic-gate /* 1199*7c478bd9Sstevel@tonic-gate * ldi_mlink_fp() is invoked for all successfull streams linkages created 1200*7c478bd9Sstevel@tonic-gate * via I_LINK and I_PLINK. ldi_mlink_fp() records the linkage information 1201*7c478bd9Sstevel@tonic-gate * in its internal state so that the devinfo snapshot code has some 1202*7c478bd9Sstevel@tonic-gate * observability into streams device linkage information. 1203*7c478bd9Sstevel@tonic-gate */ 1204*7c478bd9Sstevel@tonic-gate void 1205*7c478bd9Sstevel@tonic-gate ldi_mlink_fp(struct stdata *stp, file_t *fpdown, int lhlink, int type) 1206*7c478bd9Sstevel@tonic-gate { 1207*7c478bd9Sstevel@tonic-gate vnode_t *vp = fpdown->f_vnode; 1208*7c478bd9Sstevel@tonic-gate struct snode *sp, *csp; 1209*7c478bd9Sstevel@tonic-gate ldi_ident_t li; 1210*7c478bd9Sstevel@tonic-gate major_t major; 1211*7c478bd9Sstevel@tonic-gate int ret; 1212*7c478bd9Sstevel@tonic-gate 1213*7c478bd9Sstevel@tonic-gate /* if the lower stream is not a device then return */ 1214*7c478bd9Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops())) 1215*7c478bd9Sstevel@tonic-gate return; 1216*7c478bd9Sstevel@tonic-gate 1217*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1218*7c478bd9Sstevel@tonic-gate 1219*7c478bd9Sstevel@tonic-gate LDI_STREAMS_LNK((CE_NOTE, "%s: linking streams " 1220*7c478bd9Sstevel@tonic-gate "stp=0x%p, fpdown=0x%p", "ldi_mlink_fp", 1221*7c478bd9Sstevel@tonic-gate (void *)stp, (void *)fpdown)); 1222*7c478bd9Sstevel@tonic-gate 1223*7c478bd9Sstevel@tonic-gate sp = VTOS(vp); 1224*7c478bd9Sstevel@tonic-gate csp = VTOS(sp->s_commonvp); 1225*7c478bd9Sstevel@tonic-gate 1226*7c478bd9Sstevel@tonic-gate /* check if this was a plink via a layered handle */ 1227*7c478bd9Sstevel@tonic-gate if (lhlink) { 1228*7c478bd9Sstevel@tonic-gate /* 1229*7c478bd9Sstevel@tonic-gate * increment the common snode s_count. 1230*7c478bd9Sstevel@tonic-gate * 1231*7c478bd9Sstevel@tonic-gate * this is done because after the link operation there 1232*7c478bd9Sstevel@tonic-gate * are two ways that s_count can be decremented. 1233*7c478bd9Sstevel@tonic-gate * 1234*7c478bd9Sstevel@tonic-gate * when the layered handle used to create the link is 1235*7c478bd9Sstevel@tonic-gate * closed, spec_close() is called and it will decrement 1236*7c478bd9Sstevel@tonic-gate * s_count in the common snode. if we don't increment 1237*7c478bd9Sstevel@tonic-gate * s_count here then this could cause spec_close() to 1238*7c478bd9Sstevel@tonic-gate * actually close the device while it's still linked 1239*7c478bd9Sstevel@tonic-gate * under a multiplexer. 1240*7c478bd9Sstevel@tonic-gate * 1241*7c478bd9Sstevel@tonic-gate * also, when the lower stream is unlinked, closef() is 1242*7c478bd9Sstevel@tonic-gate * called for the file_t associated with this snode. 1243*7c478bd9Sstevel@tonic-gate * closef() will call spec_close(), which will decrement 1244*7c478bd9Sstevel@tonic-gate * s_count. if we dont't increment s_count here then this 1245*7c478bd9Sstevel@tonic-gate * could cause spec_close() to actually close the device 1246*7c478bd9Sstevel@tonic-gate * while there may still be valid layered handles 1247*7c478bd9Sstevel@tonic-gate * pointing to it. 1248*7c478bd9Sstevel@tonic-gate */ 1249*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 1250*7c478bd9Sstevel@tonic-gate ASSERT(csp->s_count >= 1); 1251*7c478bd9Sstevel@tonic-gate csp->s_count++; 1252*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 1253*7c478bd9Sstevel@tonic-gate 1254*7c478bd9Sstevel@tonic-gate /* 1255*7c478bd9Sstevel@tonic-gate * decrement the f_count. 1256*7c478bd9Sstevel@tonic-gate * this is done because the layered driver framework does 1257*7c478bd9Sstevel@tonic-gate * not actually cache a copy of the file_t allocated to 1258*7c478bd9Sstevel@tonic-gate * do the link. this is done here instead of in ldi_mlink_lh() 1259*7c478bd9Sstevel@tonic-gate * because there is a window in ldi_mlink_lh() between where 1260*7c478bd9Sstevel@tonic-gate * milnk_file() returns and we would decrement the f_count 1261*7c478bd9Sstevel@tonic-gate * when the stream could be unlinked. 1262*7c478bd9Sstevel@tonic-gate */ 1263*7c478bd9Sstevel@tonic-gate mutex_enter(&fpdown->f_tlock); 1264*7c478bd9Sstevel@tonic-gate fpdown->f_count--; 1265*7c478bd9Sstevel@tonic-gate mutex_exit(&fpdown->f_tlock); 1266*7c478bd9Sstevel@tonic-gate } 1267*7c478bd9Sstevel@tonic-gate 1268*7c478bd9Sstevel@tonic-gate /* 1269*7c478bd9Sstevel@tonic-gate * NOTE: here we rely on the streams subsystem not allowing 1270*7c478bd9Sstevel@tonic-gate * a stream to be multiplexed more than once. if this 1271*7c478bd9Sstevel@tonic-gate * changes, we break. 1272*7c478bd9Sstevel@tonic-gate * 1273*7c478bd9Sstevel@tonic-gate * mark the snode/stream as multiplexed 1274*7c478bd9Sstevel@tonic-gate */ 1275*7c478bd9Sstevel@tonic-gate mutex_enter(&sp->s_lock); 1276*7c478bd9Sstevel@tonic-gate ASSERT(!(sp->s_flag & SMUXED)); 1277*7c478bd9Sstevel@tonic-gate sp->s_flag |= SMUXED; 1278*7c478bd9Sstevel@tonic-gate mutex_exit(&sp->s_lock); 1279*7c478bd9Sstevel@tonic-gate 1280*7c478bd9Sstevel@tonic-gate /* get a layered ident for the upper stream */ 1281*7c478bd9Sstevel@tonic-gate if (type == LINKNORMAL) { 1282*7c478bd9Sstevel@tonic-gate /* 1283*7c478bd9Sstevel@tonic-gate * if the link is not persistant then we can associate 1284*7c478bd9Sstevel@tonic-gate * the upper stream with a dev_t. this is because the 1285*7c478bd9Sstevel@tonic-gate * upper stream is associated with a vnode, which is 1286*7c478bd9Sstevel@tonic-gate * associated with a dev_t and this binding can't change 1287*7c478bd9Sstevel@tonic-gate * during the life of the stream. since the link isn't 1288*7c478bd9Sstevel@tonic-gate * persistant once the stream is destroyed the link is 1289*7c478bd9Sstevel@tonic-gate * destroyed. so the dev_t will be valid for the life 1290*7c478bd9Sstevel@tonic-gate * of the link. 1291*7c478bd9Sstevel@tonic-gate */ 1292*7c478bd9Sstevel@tonic-gate ret = ldi_ident_from_stream(getendq(stp->sd_wrq), &li); 1293*7c478bd9Sstevel@tonic-gate } else { 1294*7c478bd9Sstevel@tonic-gate /* 1295*7c478bd9Sstevel@tonic-gate * if the link is persistant we can only associate the 1296*7c478bd9Sstevel@tonic-gate * link with a driver (and not a dev_t.) this is 1297*7c478bd9Sstevel@tonic-gate * because subsequent opens of the upper device may result 1298*7c478bd9Sstevel@tonic-gate * in a different stream (and dev_t) having access to 1299*7c478bd9Sstevel@tonic-gate * the lower stream. 1300*7c478bd9Sstevel@tonic-gate * 1301*7c478bd9Sstevel@tonic-gate * for example, if the upper stream is closed after the 1302*7c478bd9Sstevel@tonic-gate * persistant link operation is compleated, a subsequent 1303*7c478bd9Sstevel@tonic-gate * open of the upper device will create a new stream which 1304*7c478bd9Sstevel@tonic-gate * may have a different dev_t and an unlink operation 1305*7c478bd9Sstevel@tonic-gate * can be performed using this new upper stream. 1306*7c478bd9Sstevel@tonic-gate */ 1307*7c478bd9Sstevel@tonic-gate ASSERT(type == LINKPERSIST); 1308*7c478bd9Sstevel@tonic-gate major = getmajor(stp->sd_vnode->v_rdev); 1309*7c478bd9Sstevel@tonic-gate ret = ldi_ident_from_major(major, &li); 1310*7c478bd9Sstevel@tonic-gate } 1311*7c478bd9Sstevel@tonic-gate 1312*7c478bd9Sstevel@tonic-gate ASSERT(ret == 0); 1313*7c478bd9Sstevel@tonic-gate (void) handle_alloc(vp, (struct ldi_ident *)li); 1314*7c478bd9Sstevel@tonic-gate ldi_ident_release(li); 1315*7c478bd9Sstevel@tonic-gate } 1316*7c478bd9Sstevel@tonic-gate 1317*7c478bd9Sstevel@tonic-gate void 1318*7c478bd9Sstevel@tonic-gate ldi_munlink_fp(struct stdata *stp, file_t *fpdown, int type) 1319*7c478bd9Sstevel@tonic-gate { 1320*7c478bd9Sstevel@tonic-gate struct ldi_handle *lhp; 1321*7c478bd9Sstevel@tonic-gate vnode_t *vp = (vnode_t *)fpdown->f_vnode; 1322*7c478bd9Sstevel@tonic-gate struct snode *sp; 1323*7c478bd9Sstevel@tonic-gate ldi_ident_t li; 1324*7c478bd9Sstevel@tonic-gate major_t major; 1325*7c478bd9Sstevel@tonic-gate int ret; 1326*7c478bd9Sstevel@tonic-gate 1327*7c478bd9Sstevel@tonic-gate /* if the lower stream is not a device then return */ 1328*7c478bd9Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops())) 1329*7c478bd9Sstevel@tonic-gate return; 1330*7c478bd9Sstevel@tonic-gate 1331*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1332*7c478bd9Sstevel@tonic-gate ASSERT((type == LINKNORMAL) || (type == LINKPERSIST)); 1333*7c478bd9Sstevel@tonic-gate 1334*7c478bd9Sstevel@tonic-gate LDI_STREAMS_LNK((CE_NOTE, "%s: unlinking streams " 1335*7c478bd9Sstevel@tonic-gate "stp=0x%p, fpdown=0x%p", "ldi_munlink_fp", 1336*7c478bd9Sstevel@tonic-gate (void *)stp, (void *)fpdown)); 1337*7c478bd9Sstevel@tonic-gate 1338*7c478bd9Sstevel@tonic-gate /* 1339*7c478bd9Sstevel@tonic-gate * NOTE: here we rely on the streams subsystem not allowing 1340*7c478bd9Sstevel@tonic-gate * a stream to be multiplexed more than once. if this 1341*7c478bd9Sstevel@tonic-gate * changes, we break. 1342*7c478bd9Sstevel@tonic-gate * 1343*7c478bd9Sstevel@tonic-gate * mark the snode/stream as not multiplexed 1344*7c478bd9Sstevel@tonic-gate */ 1345*7c478bd9Sstevel@tonic-gate sp = VTOS(vp); 1346*7c478bd9Sstevel@tonic-gate mutex_enter(&sp->s_lock); 1347*7c478bd9Sstevel@tonic-gate ASSERT(sp->s_flag & SMUXED); 1348*7c478bd9Sstevel@tonic-gate sp->s_flag &= ~SMUXED; 1349*7c478bd9Sstevel@tonic-gate mutex_exit(&sp->s_lock); 1350*7c478bd9Sstevel@tonic-gate 1351*7c478bd9Sstevel@tonic-gate /* 1352*7c478bd9Sstevel@tonic-gate * clear the owner for this snode 1353*7c478bd9Sstevel@tonic-gate * see the comment in ldi_mlink_fp() for information about how 1354*7c478bd9Sstevel@tonic-gate * the ident is allocated 1355*7c478bd9Sstevel@tonic-gate */ 1356*7c478bd9Sstevel@tonic-gate if (type == LINKNORMAL) { 1357*7c478bd9Sstevel@tonic-gate ret = ldi_ident_from_stream(getendq(stp->sd_wrq), &li); 1358*7c478bd9Sstevel@tonic-gate } else { 1359*7c478bd9Sstevel@tonic-gate ASSERT(type == LINKPERSIST); 1360*7c478bd9Sstevel@tonic-gate major = getmajor(stp->sd_vnode->v_rdev); 1361*7c478bd9Sstevel@tonic-gate ret = ldi_ident_from_major(major, &li); 1362*7c478bd9Sstevel@tonic-gate } 1363*7c478bd9Sstevel@tonic-gate 1364*7c478bd9Sstevel@tonic-gate ASSERT(ret == 0); 1365*7c478bd9Sstevel@tonic-gate lhp = handle_find(vp, (struct ldi_ident *)li); 1366*7c478bd9Sstevel@tonic-gate handle_release(lhp); 1367*7c478bd9Sstevel@tonic-gate ldi_ident_release(li); 1368*7c478bd9Sstevel@tonic-gate } 1369*7c478bd9Sstevel@tonic-gate 1370*7c478bd9Sstevel@tonic-gate /* 1371*7c478bd9Sstevel@tonic-gate * LDI Consolidation private interfaces 1372*7c478bd9Sstevel@tonic-gate */ 1373*7c478bd9Sstevel@tonic-gate int 1374*7c478bd9Sstevel@tonic-gate ldi_ident_from_mod(struct modlinkage *modlp, ldi_ident_t *lip) 1375*7c478bd9Sstevel@tonic-gate { 1376*7c478bd9Sstevel@tonic-gate struct modctl *modp; 1377*7c478bd9Sstevel@tonic-gate major_t major; 1378*7c478bd9Sstevel@tonic-gate char *name; 1379*7c478bd9Sstevel@tonic-gate 1380*7c478bd9Sstevel@tonic-gate if ((modlp == NULL) || (lip == NULL)) 1381*7c478bd9Sstevel@tonic-gate return (EINVAL); 1382*7c478bd9Sstevel@tonic-gate 1383*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1384*7c478bd9Sstevel@tonic-gate 1385*7c478bd9Sstevel@tonic-gate modp = mod_getctl(modlp); 1386*7c478bd9Sstevel@tonic-gate if (modp == NULL) 1387*7c478bd9Sstevel@tonic-gate return (EINVAL); 1388*7c478bd9Sstevel@tonic-gate name = modp->mod_modname; 1389*7c478bd9Sstevel@tonic-gate if (name == NULL) 1390*7c478bd9Sstevel@tonic-gate return (EINVAL); 1391*7c478bd9Sstevel@tonic-gate major = mod_name_to_major(name); 1392*7c478bd9Sstevel@tonic-gate 1393*7c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, DDI_DEV_T_NONE, major); 1394*7c478bd9Sstevel@tonic-gate 1395*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "%s: li=0x%p, mod=%s", 1396*7c478bd9Sstevel@tonic-gate "ldi_ident_from_mod", (void *)*lip, name)); 1397*7c478bd9Sstevel@tonic-gate 1398*7c478bd9Sstevel@tonic-gate return (0); 1399*7c478bd9Sstevel@tonic-gate } 1400*7c478bd9Sstevel@tonic-gate 1401*7c478bd9Sstevel@tonic-gate ldi_ident_t 1402*7c478bd9Sstevel@tonic-gate ldi_ident_from_anon() 1403*7c478bd9Sstevel@tonic-gate { 1404*7c478bd9Sstevel@tonic-gate ldi_ident_t lip; 1405*7c478bd9Sstevel@tonic-gate 1406*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1407*7c478bd9Sstevel@tonic-gate 1408*7c478bd9Sstevel@tonic-gate lip = (ldi_ident_t)ident_alloc("genunix", NULL, DDI_DEV_T_NONE, -1); 1409*7c478bd9Sstevel@tonic-gate 1410*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "%s: li=0x%p, mod=%s", 1411*7c478bd9Sstevel@tonic-gate "ldi_ident_from_anon", (void *)lip, "genunix")); 1412*7c478bd9Sstevel@tonic-gate 1413*7c478bd9Sstevel@tonic-gate return (lip); 1414*7c478bd9Sstevel@tonic-gate } 1415*7c478bd9Sstevel@tonic-gate 1416*7c478bd9Sstevel@tonic-gate 1417*7c478bd9Sstevel@tonic-gate /* 1418*7c478bd9Sstevel@tonic-gate * LDI Public interfaces 1419*7c478bd9Sstevel@tonic-gate */ 1420*7c478bd9Sstevel@tonic-gate int 1421*7c478bd9Sstevel@tonic-gate ldi_ident_from_stream(struct queue *sq, ldi_ident_t *lip) 1422*7c478bd9Sstevel@tonic-gate { 1423*7c478bd9Sstevel@tonic-gate struct stdata *stp; 1424*7c478bd9Sstevel@tonic-gate dev_t dev; 1425*7c478bd9Sstevel@tonic-gate char *name; 1426*7c478bd9Sstevel@tonic-gate 1427*7c478bd9Sstevel@tonic-gate if ((sq == NULL) || (lip == NULL)) 1428*7c478bd9Sstevel@tonic-gate return (EINVAL); 1429*7c478bd9Sstevel@tonic-gate 1430*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1431*7c478bd9Sstevel@tonic-gate 1432*7c478bd9Sstevel@tonic-gate stp = sq->q_stream; 1433*7c478bd9Sstevel@tonic-gate if (!vn_matchops(stp->sd_vnode, spec_getvnodeops())) 1434*7c478bd9Sstevel@tonic-gate return (EINVAL); 1435*7c478bd9Sstevel@tonic-gate 1436*7c478bd9Sstevel@tonic-gate dev = stp->sd_vnode->v_rdev; 1437*7c478bd9Sstevel@tonic-gate name = mod_major_to_name(getmajor(dev)); 1438*7c478bd9Sstevel@tonic-gate if (name == NULL) 1439*7c478bd9Sstevel@tonic-gate return (EINVAL); 1440*7c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, dev, -1); 1441*7c478bd9Sstevel@tonic-gate 1442*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1443*7c478bd9Sstevel@tonic-gate "%s: li=0x%p, mod=%s, minor=0x%x, stp=0x%p", 1444*7c478bd9Sstevel@tonic-gate "ldi_ident_from_stream", (void *)*lip, name, getminor(dev), 1445*7c478bd9Sstevel@tonic-gate (void *)stp)); 1446*7c478bd9Sstevel@tonic-gate 1447*7c478bd9Sstevel@tonic-gate return (0); 1448*7c478bd9Sstevel@tonic-gate } 1449*7c478bd9Sstevel@tonic-gate 1450*7c478bd9Sstevel@tonic-gate int 1451*7c478bd9Sstevel@tonic-gate ldi_ident_from_dev(dev_t dev, ldi_ident_t *lip) 1452*7c478bd9Sstevel@tonic-gate { 1453*7c478bd9Sstevel@tonic-gate char *name; 1454*7c478bd9Sstevel@tonic-gate 1455*7c478bd9Sstevel@tonic-gate if (lip == NULL) 1456*7c478bd9Sstevel@tonic-gate return (EINVAL); 1457*7c478bd9Sstevel@tonic-gate 1458*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1459*7c478bd9Sstevel@tonic-gate 1460*7c478bd9Sstevel@tonic-gate name = mod_major_to_name(getmajor(dev)); 1461*7c478bd9Sstevel@tonic-gate if (name == NULL) 1462*7c478bd9Sstevel@tonic-gate return (EINVAL); 1463*7c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, dev, -1); 1464*7c478bd9Sstevel@tonic-gate 1465*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1466*7c478bd9Sstevel@tonic-gate "%s: li=0x%p, mod=%s, minor=0x%x", 1467*7c478bd9Sstevel@tonic-gate "ldi_ident_from_dev", (void *)*lip, name, getminor(dev))); 1468*7c478bd9Sstevel@tonic-gate 1469*7c478bd9Sstevel@tonic-gate return (0); 1470*7c478bd9Sstevel@tonic-gate } 1471*7c478bd9Sstevel@tonic-gate 1472*7c478bd9Sstevel@tonic-gate int 1473*7c478bd9Sstevel@tonic-gate ldi_ident_from_dip(dev_info_t *dip, ldi_ident_t *lip) 1474*7c478bd9Sstevel@tonic-gate { 1475*7c478bd9Sstevel@tonic-gate struct dev_info *devi = (struct dev_info *)dip; 1476*7c478bd9Sstevel@tonic-gate char *name; 1477*7c478bd9Sstevel@tonic-gate 1478*7c478bd9Sstevel@tonic-gate if ((dip == NULL) || (lip == NULL)) 1479*7c478bd9Sstevel@tonic-gate return (EINVAL); 1480*7c478bd9Sstevel@tonic-gate 1481*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1482*7c478bd9Sstevel@tonic-gate 1483*7c478bd9Sstevel@tonic-gate name = mod_major_to_name(devi->devi_major); 1484*7c478bd9Sstevel@tonic-gate if (name == NULL) 1485*7c478bd9Sstevel@tonic-gate return (EINVAL); 1486*7c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, dip, DDI_DEV_T_NONE, -1); 1487*7c478bd9Sstevel@tonic-gate 1488*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1489*7c478bd9Sstevel@tonic-gate "%s: li=0x%p, mod=%s, dip=0x%p", 1490*7c478bd9Sstevel@tonic-gate "ldi_ident_from_dip", (void *)*lip, name, (void *)devi)); 1491*7c478bd9Sstevel@tonic-gate 1492*7c478bd9Sstevel@tonic-gate return (0); 1493*7c478bd9Sstevel@tonic-gate } 1494*7c478bd9Sstevel@tonic-gate 1495*7c478bd9Sstevel@tonic-gate int 1496*7c478bd9Sstevel@tonic-gate ldi_ident_from_major(major_t major, ldi_ident_t *lip) 1497*7c478bd9Sstevel@tonic-gate { 1498*7c478bd9Sstevel@tonic-gate char *name; 1499*7c478bd9Sstevel@tonic-gate 1500*7c478bd9Sstevel@tonic-gate if (lip == NULL) 1501*7c478bd9Sstevel@tonic-gate return (EINVAL); 1502*7c478bd9Sstevel@tonic-gate 1503*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1504*7c478bd9Sstevel@tonic-gate 1505*7c478bd9Sstevel@tonic-gate name = mod_major_to_name(major); 1506*7c478bd9Sstevel@tonic-gate if (name == NULL) 1507*7c478bd9Sstevel@tonic-gate return (EINVAL); 1508*7c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, DDI_DEV_T_NONE, major); 1509*7c478bd9Sstevel@tonic-gate 1510*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1511*7c478bd9Sstevel@tonic-gate "%s: li=0x%p, mod=%s", 1512*7c478bd9Sstevel@tonic-gate "ldi_ident_from_major", (void *)*lip, name)); 1513*7c478bd9Sstevel@tonic-gate 1514*7c478bd9Sstevel@tonic-gate return (0); 1515*7c478bd9Sstevel@tonic-gate } 1516*7c478bd9Sstevel@tonic-gate 1517*7c478bd9Sstevel@tonic-gate void 1518*7c478bd9Sstevel@tonic-gate ldi_ident_release(ldi_ident_t li) 1519*7c478bd9Sstevel@tonic-gate { 1520*7c478bd9Sstevel@tonic-gate struct ldi_ident *ident = (struct ldi_ident *)li; 1521*7c478bd9Sstevel@tonic-gate char *name; 1522*7c478bd9Sstevel@tonic-gate 1523*7c478bd9Sstevel@tonic-gate if (li == NULL) 1524*7c478bd9Sstevel@tonic-gate return; 1525*7c478bd9Sstevel@tonic-gate 1526*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1527*7c478bd9Sstevel@tonic-gate 1528*7c478bd9Sstevel@tonic-gate name = ident->li_modname; 1529*7c478bd9Sstevel@tonic-gate 1530*7c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1531*7c478bd9Sstevel@tonic-gate "%s: li=0x%p, mod=%s", 1532*7c478bd9Sstevel@tonic-gate "ldi_ident_release", (void *)li, name)); 1533*7c478bd9Sstevel@tonic-gate 1534*7c478bd9Sstevel@tonic-gate ident_release((struct ldi_ident *)li); 1535*7c478bd9Sstevel@tonic-gate } 1536*7c478bd9Sstevel@tonic-gate 1537*7c478bd9Sstevel@tonic-gate /* get a handle to a device by dev_t and otyp */ 1538*7c478bd9Sstevel@tonic-gate int 1539*7c478bd9Sstevel@tonic-gate ldi_open_by_dev(dev_t *devp, int otyp, int flag, cred_t *cr, 1540*7c478bd9Sstevel@tonic-gate ldi_handle_t *lhp, ldi_ident_t li) 1541*7c478bd9Sstevel@tonic-gate { 1542*7c478bd9Sstevel@tonic-gate struct ldi_ident *lip = (struct ldi_ident *)li; 1543*7c478bd9Sstevel@tonic-gate int ret; 1544*7c478bd9Sstevel@tonic-gate vnode_t *vp; 1545*7c478bd9Sstevel@tonic-gate 1546*7c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 1547*7c478bd9Sstevel@tonic-gate if ((devp == NULL) || (!OTYP_VALID(otyp)) || (cr == NULL) || 1548*7c478bd9Sstevel@tonic-gate (lhp == NULL) || (lip == NULL)) 1549*7c478bd9Sstevel@tonic-gate return (EINVAL); 1550*7c478bd9Sstevel@tonic-gate 1551*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1552*7c478bd9Sstevel@tonic-gate 1553*7c478bd9Sstevel@tonic-gate if ((ret = ldi_vp_from_dev(*devp, otyp, &vp)) != 0) 1554*7c478bd9Sstevel@tonic-gate return (ret); 1555*7c478bd9Sstevel@tonic-gate 1556*7c478bd9Sstevel@tonic-gate if ((ret = ldi_open_by_vp(&vp, flag, cr, lhp, lip)) == 0) { 1557*7c478bd9Sstevel@tonic-gate *devp = vp->v_rdev; 1558*7c478bd9Sstevel@tonic-gate } 1559*7c478bd9Sstevel@tonic-gate VN_RELE(vp); 1560*7c478bd9Sstevel@tonic-gate 1561*7c478bd9Sstevel@tonic-gate return (ret); 1562*7c478bd9Sstevel@tonic-gate } 1563*7c478bd9Sstevel@tonic-gate 1564*7c478bd9Sstevel@tonic-gate /* get a handle to a device by pathname */ 1565*7c478bd9Sstevel@tonic-gate int 1566*7c478bd9Sstevel@tonic-gate ldi_open_by_name(char *pathname, int flag, cred_t *cr, 1567*7c478bd9Sstevel@tonic-gate ldi_handle_t *lhp, ldi_ident_t li) 1568*7c478bd9Sstevel@tonic-gate { 1569*7c478bd9Sstevel@tonic-gate struct ldi_ident *lip = (struct ldi_ident *)li; 1570*7c478bd9Sstevel@tonic-gate int ret; 1571*7c478bd9Sstevel@tonic-gate vnode_t *vp; 1572*7c478bd9Sstevel@tonic-gate 1573*7c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 1574*7c478bd9Sstevel@tonic-gate if ((pathname == NULL) || (*pathname != '/') || 1575*7c478bd9Sstevel@tonic-gate (cr == NULL) || (lhp == NULL) || (lip == NULL)) 1576*7c478bd9Sstevel@tonic-gate return (EINVAL); 1577*7c478bd9Sstevel@tonic-gate 1578*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1579*7c478bd9Sstevel@tonic-gate 1580*7c478bd9Sstevel@tonic-gate if ((ret = ldi_vp_from_name(pathname, &vp)) != 0) 1581*7c478bd9Sstevel@tonic-gate return (ret); 1582*7c478bd9Sstevel@tonic-gate 1583*7c478bd9Sstevel@tonic-gate ret = ldi_open_by_vp(&vp, flag, cr, lhp, lip); 1584*7c478bd9Sstevel@tonic-gate VN_RELE(vp); 1585*7c478bd9Sstevel@tonic-gate 1586*7c478bd9Sstevel@tonic-gate return (ret); 1587*7c478bd9Sstevel@tonic-gate } 1588*7c478bd9Sstevel@tonic-gate 1589*7c478bd9Sstevel@tonic-gate /* get a handle to a device by devid and minor_name */ 1590*7c478bd9Sstevel@tonic-gate int 1591*7c478bd9Sstevel@tonic-gate ldi_open_by_devid(ddi_devid_t devid, char *minor_name, 1592*7c478bd9Sstevel@tonic-gate int flag, cred_t *cr, ldi_handle_t *lhp, ldi_ident_t li) 1593*7c478bd9Sstevel@tonic-gate { 1594*7c478bd9Sstevel@tonic-gate struct ldi_ident *lip = (struct ldi_ident *)li; 1595*7c478bd9Sstevel@tonic-gate int ret; 1596*7c478bd9Sstevel@tonic-gate vnode_t *vp; 1597*7c478bd9Sstevel@tonic-gate 1598*7c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 1599*7c478bd9Sstevel@tonic-gate if ((minor_name == NULL) || (cr == NULL) || 1600*7c478bd9Sstevel@tonic-gate (lhp == NULL) || (lip == NULL)) 1601*7c478bd9Sstevel@tonic-gate return (EINVAL); 1602*7c478bd9Sstevel@tonic-gate 1603*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1604*7c478bd9Sstevel@tonic-gate 1605*7c478bd9Sstevel@tonic-gate if ((ret = ldi_vp_from_devid(devid, minor_name, &vp)) != 0) 1606*7c478bd9Sstevel@tonic-gate return (ret); 1607*7c478bd9Sstevel@tonic-gate 1608*7c478bd9Sstevel@tonic-gate ret = ldi_open_by_vp(&vp, flag, cr, lhp, lip); 1609*7c478bd9Sstevel@tonic-gate VN_RELE(vp); 1610*7c478bd9Sstevel@tonic-gate 1611*7c478bd9Sstevel@tonic-gate return (ret); 1612*7c478bd9Sstevel@tonic-gate } 1613*7c478bd9Sstevel@tonic-gate 1614*7c478bd9Sstevel@tonic-gate int 1615*7c478bd9Sstevel@tonic-gate ldi_close(ldi_handle_t lh, int flag, cred_t *cr) 1616*7c478bd9Sstevel@tonic-gate { 1617*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1618*7c478bd9Sstevel@tonic-gate struct ldi_event *lep; 1619*7c478bd9Sstevel@tonic-gate int err = 0; 1620*7c478bd9Sstevel@tonic-gate 1621*7c478bd9Sstevel@tonic-gate if (lh == NULL) 1622*7c478bd9Sstevel@tonic-gate return (EINVAL); 1623*7c478bd9Sstevel@tonic-gate 1624*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 1625*7c478bd9Sstevel@tonic-gate 1626*7c478bd9Sstevel@tonic-gate /* Flush back any dirty pages associated with the device. */ 1627*7c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1628*7c478bd9Sstevel@tonic-gate vnode_t *cvp = common_specvp(handlep->lh_vp); 1629*7c478bd9Sstevel@tonic-gate dev_t dev = cvp->v_rdev; 1630*7c478bd9Sstevel@tonic-gate 1631*7c478bd9Sstevel@tonic-gate (void) VOP_PUTPAGE(cvp, 0, 0, B_INVAL, kcred); 1632*7c478bd9Sstevel@tonic-gate bflush(dev); 1633*7c478bd9Sstevel@tonic-gate } 1634*7c478bd9Sstevel@tonic-gate 1635*7c478bd9Sstevel@tonic-gate /* 1636*7c478bd9Sstevel@tonic-gate * Any event handlers should have been unregistered by the 1637*7c478bd9Sstevel@tonic-gate * time ldi_close() is called. If they haven't then it's a 1638*7c478bd9Sstevel@tonic-gate * bug. 1639*7c478bd9Sstevel@tonic-gate * 1640*7c478bd9Sstevel@tonic-gate * In a debug kernel we'll panic to make the problem obvious. 1641*7c478bd9Sstevel@tonic-gate */ 1642*7c478bd9Sstevel@tonic-gate ASSERT(handlep->lh_events == NULL); 1643*7c478bd9Sstevel@tonic-gate 1644*7c478bd9Sstevel@tonic-gate /* 1645*7c478bd9Sstevel@tonic-gate * On a production kernel we'll "do the right thing" (unregister 1646*7c478bd9Sstevel@tonic-gate * the event handlers) and then complain about having to do the 1647*7c478bd9Sstevel@tonic-gate * work ourselves. 1648*7c478bd9Sstevel@tonic-gate */ 1649*7c478bd9Sstevel@tonic-gate while ((lep = handlep->lh_events) != NULL) { 1650*7c478bd9Sstevel@tonic-gate err = 1; 1651*7c478bd9Sstevel@tonic-gate (void) ldi_remove_event_handler(lh, (ldi_callback_id_t)lep); 1652*7c478bd9Sstevel@tonic-gate } 1653*7c478bd9Sstevel@tonic-gate if (err) { 1654*7c478bd9Sstevel@tonic-gate struct ldi_ident *lip = handlep->lh_ident; 1655*7c478bd9Sstevel@tonic-gate ASSERT(lip != NULL); 1656*7c478bd9Sstevel@tonic-gate cmn_err(CE_NOTE, "ldi err: %s " 1657*7c478bd9Sstevel@tonic-gate "failed to unregister layered event handlers before " 1658*7c478bd9Sstevel@tonic-gate "closing devices", lip->li_modname); 1659*7c478bd9Sstevel@tonic-gate } 1660*7c478bd9Sstevel@tonic-gate 1661*7c478bd9Sstevel@tonic-gate /* do a layered close on the device */ 1662*7c478bd9Sstevel@tonic-gate err = VOP_CLOSE(handlep->lh_vp, flag | FKLYR, 1, (offset_t)0, cr); 1663*7c478bd9Sstevel@tonic-gate 1664*7c478bd9Sstevel@tonic-gate LDI_OPENCLOSE((CE_WARN, "%s: lh=0x%p", "ldi close", (void *)lh)); 1665*7c478bd9Sstevel@tonic-gate 1666*7c478bd9Sstevel@tonic-gate /* 1667*7c478bd9Sstevel@tonic-gate * Free the handle even if the device close failed. why? 1668*7c478bd9Sstevel@tonic-gate * 1669*7c478bd9Sstevel@tonic-gate * If the device close failed we can't really make assumptions 1670*7c478bd9Sstevel@tonic-gate * about the devices state so we shouldn't allow access to the 1671*7c478bd9Sstevel@tonic-gate * device via this handle any more. If the device consumer wants 1672*7c478bd9Sstevel@tonic-gate * to access the device again they should open it again. 1673*7c478bd9Sstevel@tonic-gate * 1674*7c478bd9Sstevel@tonic-gate * This is the same way file/device close failures are handled 1675*7c478bd9Sstevel@tonic-gate * in other places like spec_close() and closeandsetf(). 1676*7c478bd9Sstevel@tonic-gate */ 1677*7c478bd9Sstevel@tonic-gate handle_release(handlep); 1678*7c478bd9Sstevel@tonic-gate return (err); 1679*7c478bd9Sstevel@tonic-gate } 1680*7c478bd9Sstevel@tonic-gate 1681*7c478bd9Sstevel@tonic-gate int 1682*7c478bd9Sstevel@tonic-gate ldi_read(ldi_handle_t lh, struct uio *uiop, cred_t *credp) 1683*7c478bd9Sstevel@tonic-gate { 1684*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1685*7c478bd9Sstevel@tonic-gate vnode_t *vp; 1686*7c478bd9Sstevel@tonic-gate dev_t dev; 1687*7c478bd9Sstevel@tonic-gate int ret; 1688*7c478bd9Sstevel@tonic-gate 1689*7c478bd9Sstevel@tonic-gate if (lh == NULL) 1690*7c478bd9Sstevel@tonic-gate return (EINVAL); 1691*7c478bd9Sstevel@tonic-gate 1692*7c478bd9Sstevel@tonic-gate vp = handlep->lh_vp; 1693*7c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 1694*7c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1695*7c478bd9Sstevel@tonic-gate ret = cdev_read(dev, uiop, credp); 1696*7c478bd9Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 1697*7c478bd9Sstevel@tonic-gate ret = strread(vp, uiop, credp); 1698*7c478bd9Sstevel@tonic-gate } else { 1699*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1700*7c478bd9Sstevel@tonic-gate } 1701*7c478bd9Sstevel@tonic-gate return (ret); 1702*7c478bd9Sstevel@tonic-gate } 1703*7c478bd9Sstevel@tonic-gate 1704*7c478bd9Sstevel@tonic-gate int 1705*7c478bd9Sstevel@tonic-gate ldi_write(ldi_handle_t lh, struct uio *uiop, cred_t *credp) 1706*7c478bd9Sstevel@tonic-gate { 1707*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1708*7c478bd9Sstevel@tonic-gate vnode_t *vp; 1709*7c478bd9Sstevel@tonic-gate dev_t dev; 1710*7c478bd9Sstevel@tonic-gate int ret; 1711*7c478bd9Sstevel@tonic-gate 1712*7c478bd9Sstevel@tonic-gate if (lh == NULL) 1713*7c478bd9Sstevel@tonic-gate return (EINVAL); 1714*7c478bd9Sstevel@tonic-gate 1715*7c478bd9Sstevel@tonic-gate vp = handlep->lh_vp; 1716*7c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 1717*7c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1718*7c478bd9Sstevel@tonic-gate ret = cdev_write(dev, uiop, credp); 1719*7c478bd9Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 1720*7c478bd9Sstevel@tonic-gate ret = strwrite(vp, uiop, credp); 1721*7c478bd9Sstevel@tonic-gate } else { 1722*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1723*7c478bd9Sstevel@tonic-gate } 1724*7c478bd9Sstevel@tonic-gate return (ret); 1725*7c478bd9Sstevel@tonic-gate } 1726*7c478bd9Sstevel@tonic-gate 1727*7c478bd9Sstevel@tonic-gate int 1728*7c478bd9Sstevel@tonic-gate ldi_get_size(ldi_handle_t lh, uint64_t *sizep) 1729*7c478bd9Sstevel@tonic-gate { 1730*7c478bd9Sstevel@tonic-gate int otyp; 1731*7c478bd9Sstevel@tonic-gate uint_t value; 1732*7c478bd9Sstevel@tonic-gate int64_t drv_prop64; 1733*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1734*7c478bd9Sstevel@tonic-gate 1735*7c478bd9Sstevel@tonic-gate 1736*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (sizep == NULL)) 1737*7c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 1738*7c478bd9Sstevel@tonic-gate 1739*7c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_STREAM) 1740*7c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 1741*7c478bd9Sstevel@tonic-gate 1742*7c478bd9Sstevel@tonic-gate /* 1743*7c478bd9Sstevel@tonic-gate * Determine device type (char or block). 1744*7c478bd9Sstevel@tonic-gate * Character devices support Size/size 1745*7c478bd9Sstevel@tonic-gate * property value. Block devices may support 1746*7c478bd9Sstevel@tonic-gate * Nblocks/nblocks or Size/size property value. 1747*7c478bd9Sstevel@tonic-gate */ 1748*7c478bd9Sstevel@tonic-gate if ((ldi_get_otyp(lh, &otyp)) != 0) 1749*7c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 1750*7c478bd9Sstevel@tonic-gate 1751*7c478bd9Sstevel@tonic-gate if (otyp == OTYP_BLK) { 1752*7c478bd9Sstevel@tonic-gate if (ldi_prop_exists(lh, 1753*7c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "Nblocks")) { 1754*7c478bd9Sstevel@tonic-gate 1755*7c478bd9Sstevel@tonic-gate drv_prop64 = ldi_prop_get_int64(lh, 1756*7c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1757*7c478bd9Sstevel@tonic-gate "Nblocks", 0); 1758*7c478bd9Sstevel@tonic-gate *sizep = (uint64_t)ldbtob((uint64_t)drv_prop64); 1759*7c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 1760*7c478bd9Sstevel@tonic-gate } 1761*7c478bd9Sstevel@tonic-gate 1762*7c478bd9Sstevel@tonic-gate if (ldi_prop_exists(lh, 1763*7c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "nblocks")) { 1764*7c478bd9Sstevel@tonic-gate 1765*7c478bd9Sstevel@tonic-gate value = ldi_prop_get_int(lh, 1766*7c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1767*7c478bd9Sstevel@tonic-gate "nblocks", 0); 1768*7c478bd9Sstevel@tonic-gate *sizep = (uint64_t)ldbtob(value); 1769*7c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 1770*7c478bd9Sstevel@tonic-gate } 1771*7c478bd9Sstevel@tonic-gate } 1772*7c478bd9Sstevel@tonic-gate 1773*7c478bd9Sstevel@tonic-gate if (ldi_prop_exists(lh, 1774*7c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "Size")) { 1775*7c478bd9Sstevel@tonic-gate 1776*7c478bd9Sstevel@tonic-gate drv_prop64 = ldi_prop_get_int64(lh, 1777*7c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "Size", 0); 1778*7c478bd9Sstevel@tonic-gate *sizep = (uint64_t)drv_prop64; 1779*7c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 1780*7c478bd9Sstevel@tonic-gate } 1781*7c478bd9Sstevel@tonic-gate 1782*7c478bd9Sstevel@tonic-gate if (ldi_prop_exists(lh, 1783*7c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "size")) { 1784*7c478bd9Sstevel@tonic-gate 1785*7c478bd9Sstevel@tonic-gate value = ldi_prop_get_int(lh, 1786*7c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "size", 0); 1787*7c478bd9Sstevel@tonic-gate *sizep = (uint64_t)value; 1788*7c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 1789*7c478bd9Sstevel@tonic-gate } 1790*7c478bd9Sstevel@tonic-gate 1791*7c478bd9Sstevel@tonic-gate /* unable to determine device size */ 1792*7c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 1793*7c478bd9Sstevel@tonic-gate } 1794*7c478bd9Sstevel@tonic-gate 1795*7c478bd9Sstevel@tonic-gate int 1796*7c478bd9Sstevel@tonic-gate ldi_ioctl(ldi_handle_t lh, int cmd, intptr_t arg, int mode, 1797*7c478bd9Sstevel@tonic-gate cred_t *cr, int *rvalp) 1798*7c478bd9Sstevel@tonic-gate { 1799*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1800*7c478bd9Sstevel@tonic-gate vnode_t *vp; 1801*7c478bd9Sstevel@tonic-gate dev_t dev; 1802*7c478bd9Sstevel@tonic-gate int ret, copymode; 1803*7c478bd9Sstevel@tonic-gate 1804*7c478bd9Sstevel@tonic-gate if (lh == NULL) 1805*7c478bd9Sstevel@tonic-gate return (EINVAL); 1806*7c478bd9Sstevel@tonic-gate 1807*7c478bd9Sstevel@tonic-gate /* 1808*7c478bd9Sstevel@tonic-gate * if the data pointed to by arg is located in the kernel then 1809*7c478bd9Sstevel@tonic-gate * make sure the FNATIVE flag is set. 1810*7c478bd9Sstevel@tonic-gate */ 1811*7c478bd9Sstevel@tonic-gate if (mode & FKIOCTL) 1812*7c478bd9Sstevel@tonic-gate mode = (mode & ~FMODELS) | FNATIVE | FKIOCTL; 1813*7c478bd9Sstevel@tonic-gate 1814*7c478bd9Sstevel@tonic-gate vp = handlep->lh_vp; 1815*7c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 1816*7c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1817*7c478bd9Sstevel@tonic-gate ret = cdev_ioctl(dev, cmd, arg, mode, cr, rvalp); 1818*7c478bd9Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 1819*7c478bd9Sstevel@tonic-gate copymode = (mode & FKIOCTL) ? K_TO_K : U_TO_K; 1820*7c478bd9Sstevel@tonic-gate 1821*7c478bd9Sstevel@tonic-gate /* 1822*7c478bd9Sstevel@tonic-gate * if we get an I_PLINK from within the kernel the 1823*7c478bd9Sstevel@tonic-gate * arg is a layered handle pointer instead of 1824*7c478bd9Sstevel@tonic-gate * a file descriptor, so we translate this ioctl 1825*7c478bd9Sstevel@tonic-gate * into a private one that can handle this. 1826*7c478bd9Sstevel@tonic-gate */ 1827*7c478bd9Sstevel@tonic-gate if ((mode & FKIOCTL) && (cmd == I_PLINK)) 1828*7c478bd9Sstevel@tonic-gate cmd = _I_PLINK_LH; 1829*7c478bd9Sstevel@tonic-gate 1830*7c478bd9Sstevel@tonic-gate ret = strioctl(vp, cmd, arg, mode, copymode, cr, rvalp); 1831*7c478bd9Sstevel@tonic-gate } else { 1832*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1833*7c478bd9Sstevel@tonic-gate } 1834*7c478bd9Sstevel@tonic-gate 1835*7c478bd9Sstevel@tonic-gate return (ret); 1836*7c478bd9Sstevel@tonic-gate } 1837*7c478bd9Sstevel@tonic-gate 1838*7c478bd9Sstevel@tonic-gate int 1839*7c478bd9Sstevel@tonic-gate ldi_poll(ldi_handle_t lh, short events, int anyyet, short *reventsp, 1840*7c478bd9Sstevel@tonic-gate struct pollhead **phpp) 1841*7c478bd9Sstevel@tonic-gate { 1842*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1843*7c478bd9Sstevel@tonic-gate vnode_t *vp; 1844*7c478bd9Sstevel@tonic-gate dev_t dev; 1845*7c478bd9Sstevel@tonic-gate int ret; 1846*7c478bd9Sstevel@tonic-gate 1847*7c478bd9Sstevel@tonic-gate if (lh == NULL) 1848*7c478bd9Sstevel@tonic-gate return (EINVAL); 1849*7c478bd9Sstevel@tonic-gate 1850*7c478bd9Sstevel@tonic-gate vp = handlep->lh_vp; 1851*7c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 1852*7c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 1853*7c478bd9Sstevel@tonic-gate ret = cdev_poll(dev, events, anyyet, reventsp, phpp); 1854*7c478bd9Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 1855*7c478bd9Sstevel@tonic-gate ret = strpoll(vp->v_stream, events, anyyet, reventsp, phpp); 1856*7c478bd9Sstevel@tonic-gate } else { 1857*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1858*7c478bd9Sstevel@tonic-gate } 1859*7c478bd9Sstevel@tonic-gate 1860*7c478bd9Sstevel@tonic-gate return (ret); 1861*7c478bd9Sstevel@tonic-gate } 1862*7c478bd9Sstevel@tonic-gate 1863*7c478bd9Sstevel@tonic-gate int 1864*7c478bd9Sstevel@tonic-gate ldi_prop_op(ldi_handle_t lh, ddi_prop_op_t prop_op, 1865*7c478bd9Sstevel@tonic-gate int flags, char *name, caddr_t valuep, int *length) 1866*7c478bd9Sstevel@tonic-gate { 1867*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1868*7c478bd9Sstevel@tonic-gate dev_t dev; 1869*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 1870*7c478bd9Sstevel@tonic-gate int ret; 1871*7c478bd9Sstevel@tonic-gate struct snode *csp; 1872*7c478bd9Sstevel@tonic-gate 1873*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 1874*7c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 1875*7c478bd9Sstevel@tonic-gate 1876*7c478bd9Sstevel@tonic-gate if ((prop_op != PROP_LEN) && (valuep == NULL)) 1877*7c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 1878*7c478bd9Sstevel@tonic-gate 1879*7c478bd9Sstevel@tonic-gate if (length == NULL) 1880*7c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 1881*7c478bd9Sstevel@tonic-gate 1882*7c478bd9Sstevel@tonic-gate /* 1883*7c478bd9Sstevel@tonic-gate * try to find the associated dip, 1884*7c478bd9Sstevel@tonic-gate * this places a hold on the driver 1885*7c478bd9Sstevel@tonic-gate */ 1886*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1887*7c478bd9Sstevel@tonic-gate 1888*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 1889*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 1890*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 1891*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 1892*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 1893*7c478bd9Sstevel@tonic-gate if (dip == NULL) 1894*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 1895*7c478bd9Sstevel@tonic-gate 1896*7c478bd9Sstevel@tonic-gate if (dip == NULL) 1897*7c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 1898*7c478bd9Sstevel@tonic-gate 1899*7c478bd9Sstevel@tonic-gate ret = i_ldi_prop_op(dev, dip, prop_op, flags, name, valuep, length); 1900*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 1901*7c478bd9Sstevel@tonic-gate 1902*7c478bd9Sstevel@tonic-gate return (ret); 1903*7c478bd9Sstevel@tonic-gate } 1904*7c478bd9Sstevel@tonic-gate 1905*7c478bd9Sstevel@tonic-gate int 1906*7c478bd9Sstevel@tonic-gate ldi_strategy(ldi_handle_t lh, struct buf *bp) 1907*7c478bd9Sstevel@tonic-gate { 1908*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1909*7c478bd9Sstevel@tonic-gate dev_t dev; 1910*7c478bd9Sstevel@tonic-gate 1911*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (bp == NULL)) 1912*7c478bd9Sstevel@tonic-gate return (EINVAL); 1913*7c478bd9Sstevel@tonic-gate 1914*7c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1915*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1916*7c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1917*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1918*7c478bd9Sstevel@tonic-gate 1919*7c478bd9Sstevel@tonic-gate bp->b_edev = dev; 1920*7c478bd9Sstevel@tonic-gate bp->b_dev = cmpdev(dev); 1921*7c478bd9Sstevel@tonic-gate return (bdev_strategy(bp)); 1922*7c478bd9Sstevel@tonic-gate } 1923*7c478bd9Sstevel@tonic-gate 1924*7c478bd9Sstevel@tonic-gate int 1925*7c478bd9Sstevel@tonic-gate ldi_dump(ldi_handle_t lh, caddr_t addr, daddr_t blkno, int nblk) 1926*7c478bd9Sstevel@tonic-gate { 1927*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1928*7c478bd9Sstevel@tonic-gate dev_t dev; 1929*7c478bd9Sstevel@tonic-gate 1930*7c478bd9Sstevel@tonic-gate if (lh == NULL) 1931*7c478bd9Sstevel@tonic-gate return (EINVAL); 1932*7c478bd9Sstevel@tonic-gate 1933*7c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1934*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1935*7c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1936*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1937*7c478bd9Sstevel@tonic-gate 1938*7c478bd9Sstevel@tonic-gate return (bdev_dump(dev, addr, blkno, nblk)); 1939*7c478bd9Sstevel@tonic-gate } 1940*7c478bd9Sstevel@tonic-gate 1941*7c478bd9Sstevel@tonic-gate int 1942*7c478bd9Sstevel@tonic-gate ldi_devmap(ldi_handle_t lh, devmap_cookie_t dhp, offset_t off, 1943*7c478bd9Sstevel@tonic-gate size_t len, size_t *maplen, uint_t model) 1944*7c478bd9Sstevel@tonic-gate { 1945*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1946*7c478bd9Sstevel@tonic-gate dev_t dev; 1947*7c478bd9Sstevel@tonic-gate 1948*7c478bd9Sstevel@tonic-gate if (lh == NULL) 1949*7c478bd9Sstevel@tonic-gate return (EINVAL); 1950*7c478bd9Sstevel@tonic-gate 1951*7c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1952*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1953*7c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1954*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1955*7c478bd9Sstevel@tonic-gate 1956*7c478bd9Sstevel@tonic-gate return (cdev_devmap(dev, dhp, off, len, maplen, model)); 1957*7c478bd9Sstevel@tonic-gate } 1958*7c478bd9Sstevel@tonic-gate 1959*7c478bd9Sstevel@tonic-gate int 1960*7c478bd9Sstevel@tonic-gate ldi_aread(ldi_handle_t lh, struct aio_req *aio_reqp, cred_t *cr) 1961*7c478bd9Sstevel@tonic-gate { 1962*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1963*7c478bd9Sstevel@tonic-gate dev_t dev; 1964*7c478bd9Sstevel@tonic-gate struct cb_ops *cb; 1965*7c478bd9Sstevel@tonic-gate 1966*7c478bd9Sstevel@tonic-gate if (lh == NULL) 1967*7c478bd9Sstevel@tonic-gate return (EINVAL); 1968*7c478bd9Sstevel@tonic-gate 1969*7c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1970*7c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1971*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1972*7c478bd9Sstevel@tonic-gate 1973*7c478bd9Sstevel@tonic-gate /* 1974*7c478bd9Sstevel@tonic-gate * Kaio is only supported on block devices. 1975*7c478bd9Sstevel@tonic-gate */ 1976*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 1977*7c478bd9Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops; 1978*7c478bd9Sstevel@tonic-gate if (cb->cb_strategy == nodev || cb->cb_strategy == NULL) 1979*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1980*7c478bd9Sstevel@tonic-gate 1981*7c478bd9Sstevel@tonic-gate if (cb->cb_aread == NULL) 1982*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 1983*7c478bd9Sstevel@tonic-gate 1984*7c478bd9Sstevel@tonic-gate return (cb->cb_aread(dev, aio_reqp, cr)); 1985*7c478bd9Sstevel@tonic-gate } 1986*7c478bd9Sstevel@tonic-gate 1987*7c478bd9Sstevel@tonic-gate int 1988*7c478bd9Sstevel@tonic-gate ldi_awrite(ldi_handle_t lh, struct aio_req *aio_reqp, cred_t *cr) 1989*7c478bd9Sstevel@tonic-gate { 1990*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1991*7c478bd9Sstevel@tonic-gate struct cb_ops *cb; 1992*7c478bd9Sstevel@tonic-gate dev_t dev; 1993*7c478bd9Sstevel@tonic-gate 1994*7c478bd9Sstevel@tonic-gate if (lh == NULL) 1995*7c478bd9Sstevel@tonic-gate return (EINVAL); 1996*7c478bd9Sstevel@tonic-gate 1997*7c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 1998*7c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 1999*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 2000*7c478bd9Sstevel@tonic-gate 2001*7c478bd9Sstevel@tonic-gate /* 2002*7c478bd9Sstevel@tonic-gate * Kaio is only supported on block devices. 2003*7c478bd9Sstevel@tonic-gate */ 2004*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2005*7c478bd9Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops; 2006*7c478bd9Sstevel@tonic-gate if (cb->cb_strategy == nodev || cb->cb_strategy == NULL) 2007*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 2008*7c478bd9Sstevel@tonic-gate 2009*7c478bd9Sstevel@tonic-gate if (cb->cb_awrite == NULL) 2010*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 2011*7c478bd9Sstevel@tonic-gate 2012*7c478bd9Sstevel@tonic-gate return (cb->cb_awrite(dev, aio_reqp, cr)); 2013*7c478bd9Sstevel@tonic-gate } 2014*7c478bd9Sstevel@tonic-gate 2015*7c478bd9Sstevel@tonic-gate int 2016*7c478bd9Sstevel@tonic-gate ldi_putmsg(ldi_handle_t lh, mblk_t *smp) 2017*7c478bd9Sstevel@tonic-gate { 2018*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2019*7c478bd9Sstevel@tonic-gate int ret; 2020*7c478bd9Sstevel@tonic-gate 2021*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (smp == NULL)) 2022*7c478bd9Sstevel@tonic-gate return (EINVAL); 2023*7c478bd9Sstevel@tonic-gate 2024*7c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_STREAM)) { 2025*7c478bd9Sstevel@tonic-gate freemsg(smp); 2026*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 2027*7c478bd9Sstevel@tonic-gate } 2028*7c478bd9Sstevel@tonic-gate 2029*7c478bd9Sstevel@tonic-gate /* Send message while honoring flow control */ 2030*7c478bd9Sstevel@tonic-gate ret = kstrputmsg(handlep->lh_vp, smp, NULL, 0, 0, 2031*7c478bd9Sstevel@tonic-gate MSG_BAND | MSG_HOLDSIG | MSG_IGNERROR, 0); 2032*7c478bd9Sstevel@tonic-gate 2033*7c478bd9Sstevel@tonic-gate return (ret); 2034*7c478bd9Sstevel@tonic-gate } 2035*7c478bd9Sstevel@tonic-gate 2036*7c478bd9Sstevel@tonic-gate int 2037*7c478bd9Sstevel@tonic-gate ldi_getmsg(ldi_handle_t lh, mblk_t **rmp, timestruc_t *timeo) 2038*7c478bd9Sstevel@tonic-gate { 2039*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2040*7c478bd9Sstevel@tonic-gate clock_t timout; /* milliseconds */ 2041*7c478bd9Sstevel@tonic-gate uchar_t pri; 2042*7c478bd9Sstevel@tonic-gate rval_t rval; 2043*7c478bd9Sstevel@tonic-gate int ret, pflag; 2044*7c478bd9Sstevel@tonic-gate 2045*7c478bd9Sstevel@tonic-gate 2046*7c478bd9Sstevel@tonic-gate if (lh == NULL) 2047*7c478bd9Sstevel@tonic-gate return (EINVAL); 2048*7c478bd9Sstevel@tonic-gate 2049*7c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_STREAM)) 2050*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 2051*7c478bd9Sstevel@tonic-gate 2052*7c478bd9Sstevel@tonic-gate /* Convert from nanoseconds to milliseconds */ 2053*7c478bd9Sstevel@tonic-gate if (timeo != NULL) { 2054*7c478bd9Sstevel@tonic-gate timout = timeo->tv_sec * 1000 + timeo->tv_nsec / 1000000; 2055*7c478bd9Sstevel@tonic-gate if (timout > INT_MAX) 2056*7c478bd9Sstevel@tonic-gate return (EINVAL); 2057*7c478bd9Sstevel@tonic-gate } else 2058*7c478bd9Sstevel@tonic-gate timout = -1; 2059*7c478bd9Sstevel@tonic-gate 2060*7c478bd9Sstevel@tonic-gate /* Wait for timeout millseconds for a message */ 2061*7c478bd9Sstevel@tonic-gate pflag = MSG_ANY; 2062*7c478bd9Sstevel@tonic-gate pri = 0; 2063*7c478bd9Sstevel@tonic-gate *rmp = NULL; 2064*7c478bd9Sstevel@tonic-gate ret = kstrgetmsg(handlep->lh_vp, 2065*7c478bd9Sstevel@tonic-gate rmp, NULL, &pri, &pflag, timout, &rval); 2066*7c478bd9Sstevel@tonic-gate return (ret); 2067*7c478bd9Sstevel@tonic-gate } 2068*7c478bd9Sstevel@tonic-gate 2069*7c478bd9Sstevel@tonic-gate int 2070*7c478bd9Sstevel@tonic-gate ldi_get_dev(ldi_handle_t lh, dev_t *devp) 2071*7c478bd9Sstevel@tonic-gate { 2072*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2073*7c478bd9Sstevel@tonic-gate 2074*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (devp == NULL)) 2075*7c478bd9Sstevel@tonic-gate return (EINVAL); 2076*7c478bd9Sstevel@tonic-gate 2077*7c478bd9Sstevel@tonic-gate *devp = handlep->lh_vp->v_rdev; 2078*7c478bd9Sstevel@tonic-gate return (0); 2079*7c478bd9Sstevel@tonic-gate } 2080*7c478bd9Sstevel@tonic-gate 2081*7c478bd9Sstevel@tonic-gate int 2082*7c478bd9Sstevel@tonic-gate ldi_get_otyp(ldi_handle_t lh, int *otyp) 2083*7c478bd9Sstevel@tonic-gate { 2084*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2085*7c478bd9Sstevel@tonic-gate 2086*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (otyp == NULL)) 2087*7c478bd9Sstevel@tonic-gate return (EINVAL); 2088*7c478bd9Sstevel@tonic-gate 2089*7c478bd9Sstevel@tonic-gate *otyp = VTYP_TO_OTYP(handlep->lh_vp->v_type); 2090*7c478bd9Sstevel@tonic-gate return (0); 2091*7c478bd9Sstevel@tonic-gate } 2092*7c478bd9Sstevel@tonic-gate 2093*7c478bd9Sstevel@tonic-gate int 2094*7c478bd9Sstevel@tonic-gate ldi_get_devid(ldi_handle_t lh, ddi_devid_t *devid) 2095*7c478bd9Sstevel@tonic-gate { 2096*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2097*7c478bd9Sstevel@tonic-gate int ret; 2098*7c478bd9Sstevel@tonic-gate dev_t dev; 2099*7c478bd9Sstevel@tonic-gate 2100*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (devid == NULL)) 2101*7c478bd9Sstevel@tonic-gate return (EINVAL); 2102*7c478bd9Sstevel@tonic-gate 2103*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2104*7c478bd9Sstevel@tonic-gate 2105*7c478bd9Sstevel@tonic-gate ret = ddi_lyr_get_devid(dev, devid); 2106*7c478bd9Sstevel@tonic-gate if (ret != DDI_SUCCESS) 2107*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 2108*7c478bd9Sstevel@tonic-gate 2109*7c478bd9Sstevel@tonic-gate return (0); 2110*7c478bd9Sstevel@tonic-gate } 2111*7c478bd9Sstevel@tonic-gate 2112*7c478bd9Sstevel@tonic-gate int 2113*7c478bd9Sstevel@tonic-gate ldi_get_minor_name(ldi_handle_t lh, char **minor_name) 2114*7c478bd9Sstevel@tonic-gate { 2115*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2116*7c478bd9Sstevel@tonic-gate int ret, otyp; 2117*7c478bd9Sstevel@tonic-gate dev_t dev; 2118*7c478bd9Sstevel@tonic-gate 2119*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (minor_name == NULL)) 2120*7c478bd9Sstevel@tonic-gate return (EINVAL); 2121*7c478bd9Sstevel@tonic-gate 2122*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2123*7c478bd9Sstevel@tonic-gate otyp = VTYP_TO_OTYP(handlep->lh_vp->v_type); 2124*7c478bd9Sstevel@tonic-gate 2125*7c478bd9Sstevel@tonic-gate ret = ddi_lyr_get_minor_name(dev, OTYP_TO_STYP(otyp), minor_name); 2126*7c478bd9Sstevel@tonic-gate if (ret != DDI_SUCCESS) 2127*7c478bd9Sstevel@tonic-gate return (ENOTSUP); 2128*7c478bd9Sstevel@tonic-gate 2129*7c478bd9Sstevel@tonic-gate return (0); 2130*7c478bd9Sstevel@tonic-gate } 2131*7c478bd9Sstevel@tonic-gate 2132*7c478bd9Sstevel@tonic-gate int 2133*7c478bd9Sstevel@tonic-gate ldi_prop_lookup_int_array(ldi_handle_t lh, 2134*7c478bd9Sstevel@tonic-gate uint_t flags, char *name, int **data, uint_t *nelements) 2135*7c478bd9Sstevel@tonic-gate { 2136*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2137*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2138*7c478bd9Sstevel@tonic-gate dev_t dev; 2139*7c478bd9Sstevel@tonic-gate int res; 2140*7c478bd9Sstevel@tonic-gate struct snode *csp; 2141*7c478bd9Sstevel@tonic-gate 2142*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2143*7c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2144*7c478bd9Sstevel@tonic-gate 2145*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2146*7c478bd9Sstevel@tonic-gate 2147*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2148*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2149*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2150*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2151*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2152*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2153*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2154*7c478bd9Sstevel@tonic-gate 2155*7c478bd9Sstevel@tonic-gate if (dip == NULL) { 2156*7c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2157*7c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2158*7c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2159*7c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2160*7c478bd9Sstevel@tonic-gate } 2161*7c478bd9Sstevel@tonic-gate 2162*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 2163*7c478bd9Sstevel@tonic-gate int *prop_val, prop_len; 2164*7c478bd9Sstevel@tonic-gate 2165*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2166*7c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, sizeof (int)); 2167*7c478bd9Sstevel@tonic-gate 2168*7c478bd9Sstevel@tonic-gate /* if we got it then return it */ 2169*7c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2170*7c478bd9Sstevel@tonic-gate *nelements = prop_len / sizeof (int); 2171*7c478bd9Sstevel@tonic-gate *data = prop_val; 2172*7c478bd9Sstevel@tonic-gate 2173*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2174*7c478bd9Sstevel@tonic-gate return (res); 2175*7c478bd9Sstevel@tonic-gate } 2176*7c478bd9Sstevel@tonic-gate } 2177*7c478bd9Sstevel@tonic-gate 2178*7c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 2179*7c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_int_array(dev, dip, flags, 2180*7c478bd9Sstevel@tonic-gate name, data, nelements); 2181*7c478bd9Sstevel@tonic-gate 2182*7c478bd9Sstevel@tonic-gate if (dip != NULL) 2183*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2184*7c478bd9Sstevel@tonic-gate 2185*7c478bd9Sstevel@tonic-gate return (res); 2186*7c478bd9Sstevel@tonic-gate } 2187*7c478bd9Sstevel@tonic-gate 2188*7c478bd9Sstevel@tonic-gate int 2189*7c478bd9Sstevel@tonic-gate ldi_prop_lookup_int64_array(ldi_handle_t lh, 2190*7c478bd9Sstevel@tonic-gate uint_t flags, char *name, int64_t **data, uint_t *nelements) 2191*7c478bd9Sstevel@tonic-gate { 2192*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2193*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2194*7c478bd9Sstevel@tonic-gate dev_t dev; 2195*7c478bd9Sstevel@tonic-gate int res; 2196*7c478bd9Sstevel@tonic-gate struct snode *csp; 2197*7c478bd9Sstevel@tonic-gate 2198*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2199*7c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2200*7c478bd9Sstevel@tonic-gate 2201*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2202*7c478bd9Sstevel@tonic-gate 2203*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2204*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2205*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2206*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2207*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2208*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2209*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2210*7c478bd9Sstevel@tonic-gate 2211*7c478bd9Sstevel@tonic-gate if (dip == NULL) { 2212*7c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2213*7c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2214*7c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2215*7c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2216*7c478bd9Sstevel@tonic-gate } 2217*7c478bd9Sstevel@tonic-gate 2218*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 2219*7c478bd9Sstevel@tonic-gate int64_t *prop_val; 2220*7c478bd9Sstevel@tonic-gate int prop_len; 2221*7c478bd9Sstevel@tonic-gate 2222*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2223*7c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, sizeof (int64_t)); 2224*7c478bd9Sstevel@tonic-gate 2225*7c478bd9Sstevel@tonic-gate /* if we got it then return it */ 2226*7c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2227*7c478bd9Sstevel@tonic-gate *nelements = prop_len / sizeof (int64_t); 2228*7c478bd9Sstevel@tonic-gate *data = prop_val; 2229*7c478bd9Sstevel@tonic-gate 2230*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2231*7c478bd9Sstevel@tonic-gate return (res); 2232*7c478bd9Sstevel@tonic-gate } 2233*7c478bd9Sstevel@tonic-gate } 2234*7c478bd9Sstevel@tonic-gate 2235*7c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 2236*7c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_int64_array(dev, dip, flags, 2237*7c478bd9Sstevel@tonic-gate name, data, nelements); 2238*7c478bd9Sstevel@tonic-gate 2239*7c478bd9Sstevel@tonic-gate if (dip != NULL) 2240*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2241*7c478bd9Sstevel@tonic-gate 2242*7c478bd9Sstevel@tonic-gate return (res); 2243*7c478bd9Sstevel@tonic-gate } 2244*7c478bd9Sstevel@tonic-gate 2245*7c478bd9Sstevel@tonic-gate int 2246*7c478bd9Sstevel@tonic-gate ldi_prop_lookup_string_array(ldi_handle_t lh, 2247*7c478bd9Sstevel@tonic-gate uint_t flags, char *name, char ***data, uint_t *nelements) 2248*7c478bd9Sstevel@tonic-gate { 2249*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2250*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2251*7c478bd9Sstevel@tonic-gate dev_t dev; 2252*7c478bd9Sstevel@tonic-gate int res; 2253*7c478bd9Sstevel@tonic-gate struct snode *csp; 2254*7c478bd9Sstevel@tonic-gate 2255*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2256*7c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2257*7c478bd9Sstevel@tonic-gate 2258*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2259*7c478bd9Sstevel@tonic-gate 2260*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2261*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2262*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2263*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2264*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2265*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2266*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2267*7c478bd9Sstevel@tonic-gate 2268*7c478bd9Sstevel@tonic-gate if (dip == NULL) { 2269*7c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2270*7c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2271*7c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2272*7c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2273*7c478bd9Sstevel@tonic-gate } 2274*7c478bd9Sstevel@tonic-gate 2275*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 2276*7c478bd9Sstevel@tonic-gate char *prop_val; 2277*7c478bd9Sstevel@tonic-gate int prop_len; 2278*7c478bd9Sstevel@tonic-gate 2279*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2280*7c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, 0); 2281*7c478bd9Sstevel@tonic-gate 2282*7c478bd9Sstevel@tonic-gate /* if we got it then return it */ 2283*7c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2284*7c478bd9Sstevel@tonic-gate char **str_array; 2285*7c478bd9Sstevel@tonic-gate int nelem; 2286*7c478bd9Sstevel@tonic-gate 2287*7c478bd9Sstevel@tonic-gate /* 2288*7c478bd9Sstevel@tonic-gate * pack the returned string array into the format 2289*7c478bd9Sstevel@tonic-gate * our callers expect 2290*7c478bd9Sstevel@tonic-gate */ 2291*7c478bd9Sstevel@tonic-gate if (i_pack_string_array(prop_val, prop_len, 2292*7c478bd9Sstevel@tonic-gate &str_array, &nelem) == 0) { 2293*7c478bd9Sstevel@tonic-gate 2294*7c478bd9Sstevel@tonic-gate *data = str_array; 2295*7c478bd9Sstevel@tonic-gate *nelements = nelem; 2296*7c478bd9Sstevel@tonic-gate 2297*7c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 2298*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2299*7c478bd9Sstevel@tonic-gate return (res); 2300*7c478bd9Sstevel@tonic-gate } 2301*7c478bd9Sstevel@tonic-gate 2302*7c478bd9Sstevel@tonic-gate /* 2303*7c478bd9Sstevel@tonic-gate * the format of the returned property must have 2304*7c478bd9Sstevel@tonic-gate * been bad so throw it out 2305*7c478bd9Sstevel@tonic-gate */ 2306*7c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 2307*7c478bd9Sstevel@tonic-gate } 2308*7c478bd9Sstevel@tonic-gate } 2309*7c478bd9Sstevel@tonic-gate 2310*7c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 2311*7c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_string_array(dev, dip, flags, 2312*7c478bd9Sstevel@tonic-gate name, data, nelements); 2313*7c478bd9Sstevel@tonic-gate 2314*7c478bd9Sstevel@tonic-gate if (dip != NULL) 2315*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2316*7c478bd9Sstevel@tonic-gate 2317*7c478bd9Sstevel@tonic-gate return (res); 2318*7c478bd9Sstevel@tonic-gate } 2319*7c478bd9Sstevel@tonic-gate 2320*7c478bd9Sstevel@tonic-gate int 2321*7c478bd9Sstevel@tonic-gate ldi_prop_lookup_string(ldi_handle_t lh, 2322*7c478bd9Sstevel@tonic-gate uint_t flags, char *name, char **data) 2323*7c478bd9Sstevel@tonic-gate { 2324*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2325*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2326*7c478bd9Sstevel@tonic-gate dev_t dev; 2327*7c478bd9Sstevel@tonic-gate int res; 2328*7c478bd9Sstevel@tonic-gate struct snode *csp; 2329*7c478bd9Sstevel@tonic-gate 2330*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2331*7c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2332*7c478bd9Sstevel@tonic-gate 2333*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2334*7c478bd9Sstevel@tonic-gate 2335*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2336*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2337*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2338*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2339*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2340*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2341*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2342*7c478bd9Sstevel@tonic-gate 2343*7c478bd9Sstevel@tonic-gate if (dip == NULL) { 2344*7c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2345*7c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2346*7c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2347*7c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2348*7c478bd9Sstevel@tonic-gate } 2349*7c478bd9Sstevel@tonic-gate 2350*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 2351*7c478bd9Sstevel@tonic-gate char *prop_val; 2352*7c478bd9Sstevel@tonic-gate int prop_len; 2353*7c478bd9Sstevel@tonic-gate 2354*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2355*7c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, 0); 2356*7c478bd9Sstevel@tonic-gate 2357*7c478bd9Sstevel@tonic-gate /* if we got it then return it */ 2358*7c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2359*7c478bd9Sstevel@tonic-gate /* 2360*7c478bd9Sstevel@tonic-gate * sanity check the vaule returned. 2361*7c478bd9Sstevel@tonic-gate */ 2362*7c478bd9Sstevel@tonic-gate if (i_check_string(prop_val, prop_len)) { 2363*7c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 2364*7c478bd9Sstevel@tonic-gate } else { 2365*7c478bd9Sstevel@tonic-gate *data = prop_val; 2366*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2367*7c478bd9Sstevel@tonic-gate return (res); 2368*7c478bd9Sstevel@tonic-gate } 2369*7c478bd9Sstevel@tonic-gate } 2370*7c478bd9Sstevel@tonic-gate } 2371*7c478bd9Sstevel@tonic-gate 2372*7c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 2373*7c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_string(dev, dip, flags, name, data); 2374*7c478bd9Sstevel@tonic-gate 2375*7c478bd9Sstevel@tonic-gate if (dip != NULL) 2376*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2377*7c478bd9Sstevel@tonic-gate 2378*7c478bd9Sstevel@tonic-gate #ifdef DEBUG 2379*7c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2380*7c478bd9Sstevel@tonic-gate /* 2381*7c478bd9Sstevel@tonic-gate * keep ourselves honest 2382*7c478bd9Sstevel@tonic-gate * make sure the framework returns strings in the 2383*7c478bd9Sstevel@tonic-gate * same format as we're demanding from drivers. 2384*7c478bd9Sstevel@tonic-gate */ 2385*7c478bd9Sstevel@tonic-gate struct prop_driver_data *pdd; 2386*7c478bd9Sstevel@tonic-gate int pdd_prop_size; 2387*7c478bd9Sstevel@tonic-gate 2388*7c478bd9Sstevel@tonic-gate pdd = ((struct prop_driver_data *)(*data)) - 1; 2389*7c478bd9Sstevel@tonic-gate pdd_prop_size = pdd->pdd_size - 2390*7c478bd9Sstevel@tonic-gate sizeof (struct prop_driver_data); 2391*7c478bd9Sstevel@tonic-gate ASSERT(i_check_string(*data, pdd_prop_size) == 0); 2392*7c478bd9Sstevel@tonic-gate } 2393*7c478bd9Sstevel@tonic-gate #endif /* DEBUG */ 2394*7c478bd9Sstevel@tonic-gate 2395*7c478bd9Sstevel@tonic-gate return (res); 2396*7c478bd9Sstevel@tonic-gate } 2397*7c478bd9Sstevel@tonic-gate 2398*7c478bd9Sstevel@tonic-gate int 2399*7c478bd9Sstevel@tonic-gate ldi_prop_lookup_byte_array(ldi_handle_t lh, 2400*7c478bd9Sstevel@tonic-gate uint_t flags, char *name, uchar_t **data, uint_t *nelements) 2401*7c478bd9Sstevel@tonic-gate { 2402*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2403*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2404*7c478bd9Sstevel@tonic-gate dev_t dev; 2405*7c478bd9Sstevel@tonic-gate int res; 2406*7c478bd9Sstevel@tonic-gate struct snode *csp; 2407*7c478bd9Sstevel@tonic-gate 2408*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2409*7c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 2410*7c478bd9Sstevel@tonic-gate 2411*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2412*7c478bd9Sstevel@tonic-gate 2413*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2414*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2415*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2416*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2417*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2418*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2419*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2420*7c478bd9Sstevel@tonic-gate 2421*7c478bd9Sstevel@tonic-gate if (dip == NULL) { 2422*7c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2423*7c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2424*7c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2425*7c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2426*7c478bd9Sstevel@tonic-gate } 2427*7c478bd9Sstevel@tonic-gate 2428*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 2429*7c478bd9Sstevel@tonic-gate uchar_t *prop_val; 2430*7c478bd9Sstevel@tonic-gate int prop_len; 2431*7c478bd9Sstevel@tonic-gate 2432*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 2433*7c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, sizeof (uchar_t)); 2434*7c478bd9Sstevel@tonic-gate 2435*7c478bd9Sstevel@tonic-gate /* if we got it then return it */ 2436*7c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2437*7c478bd9Sstevel@tonic-gate *nelements = prop_len / sizeof (uchar_t); 2438*7c478bd9Sstevel@tonic-gate *data = prop_val; 2439*7c478bd9Sstevel@tonic-gate 2440*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2441*7c478bd9Sstevel@tonic-gate return (res); 2442*7c478bd9Sstevel@tonic-gate } 2443*7c478bd9Sstevel@tonic-gate } 2444*7c478bd9Sstevel@tonic-gate 2445*7c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 2446*7c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_byte_array(dev, dip, flags, 2447*7c478bd9Sstevel@tonic-gate name, data, nelements); 2448*7c478bd9Sstevel@tonic-gate 2449*7c478bd9Sstevel@tonic-gate if (dip != NULL) 2450*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2451*7c478bd9Sstevel@tonic-gate 2452*7c478bd9Sstevel@tonic-gate return (res); 2453*7c478bd9Sstevel@tonic-gate } 2454*7c478bd9Sstevel@tonic-gate 2455*7c478bd9Sstevel@tonic-gate int 2456*7c478bd9Sstevel@tonic-gate ldi_prop_get_int(ldi_handle_t lh, 2457*7c478bd9Sstevel@tonic-gate uint_t flags, char *name, int defvalue) 2458*7c478bd9Sstevel@tonic-gate { 2459*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2460*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2461*7c478bd9Sstevel@tonic-gate dev_t dev; 2462*7c478bd9Sstevel@tonic-gate int res; 2463*7c478bd9Sstevel@tonic-gate struct snode *csp; 2464*7c478bd9Sstevel@tonic-gate 2465*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2466*7c478bd9Sstevel@tonic-gate return (defvalue); 2467*7c478bd9Sstevel@tonic-gate 2468*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2469*7c478bd9Sstevel@tonic-gate 2470*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2471*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2472*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2473*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2474*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2475*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2476*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2477*7c478bd9Sstevel@tonic-gate 2478*7c478bd9Sstevel@tonic-gate if (dip == NULL) { 2479*7c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2480*7c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2481*7c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2482*7c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2483*7c478bd9Sstevel@tonic-gate } 2484*7c478bd9Sstevel@tonic-gate 2485*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 2486*7c478bd9Sstevel@tonic-gate int prop_val; 2487*7c478bd9Sstevel@tonic-gate int prop_len; 2488*7c478bd9Sstevel@tonic-gate 2489*7c478bd9Sstevel@tonic-gate /* 2490*7c478bd9Sstevel@tonic-gate * first call the drivers prop_op interface to allow it 2491*7c478bd9Sstevel@tonic-gate * it to override default property values. 2492*7c478bd9Sstevel@tonic-gate */ 2493*7c478bd9Sstevel@tonic-gate prop_len = sizeof (int); 2494*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN_AND_VAL_BUF, 2495*7c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, 2496*7c478bd9Sstevel@tonic-gate (caddr_t)&prop_val, &prop_len); 2497*7c478bd9Sstevel@tonic-gate 2498*7c478bd9Sstevel@tonic-gate /* if we got it then return it */ 2499*7c478bd9Sstevel@tonic-gate if ((res == DDI_PROP_SUCCESS) && 2500*7c478bd9Sstevel@tonic-gate (prop_len == sizeof (int))) { 2501*7c478bd9Sstevel@tonic-gate res = prop_val; 2502*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2503*7c478bd9Sstevel@tonic-gate return (res); 2504*7c478bd9Sstevel@tonic-gate } 2505*7c478bd9Sstevel@tonic-gate } 2506*7c478bd9Sstevel@tonic-gate 2507*7c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 2508*7c478bd9Sstevel@tonic-gate res = ddi_prop_get_int(dev, dip, flags, name, defvalue); 2509*7c478bd9Sstevel@tonic-gate 2510*7c478bd9Sstevel@tonic-gate if (dip != NULL) 2511*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2512*7c478bd9Sstevel@tonic-gate 2513*7c478bd9Sstevel@tonic-gate return (res); 2514*7c478bd9Sstevel@tonic-gate } 2515*7c478bd9Sstevel@tonic-gate 2516*7c478bd9Sstevel@tonic-gate int64_t 2517*7c478bd9Sstevel@tonic-gate ldi_prop_get_int64(ldi_handle_t lh, 2518*7c478bd9Sstevel@tonic-gate uint_t flags, char *name, int64_t defvalue) 2519*7c478bd9Sstevel@tonic-gate { 2520*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2521*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2522*7c478bd9Sstevel@tonic-gate dev_t dev; 2523*7c478bd9Sstevel@tonic-gate int64_t res; 2524*7c478bd9Sstevel@tonic-gate struct snode *csp; 2525*7c478bd9Sstevel@tonic-gate 2526*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2527*7c478bd9Sstevel@tonic-gate return (defvalue); 2528*7c478bd9Sstevel@tonic-gate 2529*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2530*7c478bd9Sstevel@tonic-gate 2531*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2532*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2533*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2534*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2535*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2536*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2537*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2538*7c478bd9Sstevel@tonic-gate 2539*7c478bd9Sstevel@tonic-gate if (dip == NULL) { 2540*7c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 2541*7c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 2542*7c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2543*7c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2544*7c478bd9Sstevel@tonic-gate } 2545*7c478bd9Sstevel@tonic-gate 2546*7c478bd9Sstevel@tonic-gate if (dip != NULL) { 2547*7c478bd9Sstevel@tonic-gate int64_t prop_val; 2548*7c478bd9Sstevel@tonic-gate int prop_len; 2549*7c478bd9Sstevel@tonic-gate 2550*7c478bd9Sstevel@tonic-gate /* 2551*7c478bd9Sstevel@tonic-gate * first call the drivers prop_op interface to allow it 2552*7c478bd9Sstevel@tonic-gate * it to override default property values. 2553*7c478bd9Sstevel@tonic-gate */ 2554*7c478bd9Sstevel@tonic-gate prop_len = sizeof (int64_t); 2555*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN_AND_VAL_BUF, 2556*7c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, 2557*7c478bd9Sstevel@tonic-gate (caddr_t)&prop_val, &prop_len); 2558*7c478bd9Sstevel@tonic-gate 2559*7c478bd9Sstevel@tonic-gate /* if we got it then return it */ 2560*7c478bd9Sstevel@tonic-gate if ((res == DDI_PROP_SUCCESS) && 2561*7c478bd9Sstevel@tonic-gate (prop_len == sizeof (int64_t))) { 2562*7c478bd9Sstevel@tonic-gate res = prop_val; 2563*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2564*7c478bd9Sstevel@tonic-gate return (res); 2565*7c478bd9Sstevel@tonic-gate } 2566*7c478bd9Sstevel@tonic-gate } 2567*7c478bd9Sstevel@tonic-gate 2568*7c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 2569*7c478bd9Sstevel@tonic-gate res = ddi_prop_get_int64(dev, dip, flags, name, defvalue); 2570*7c478bd9Sstevel@tonic-gate 2571*7c478bd9Sstevel@tonic-gate if (dip != NULL) 2572*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2573*7c478bd9Sstevel@tonic-gate 2574*7c478bd9Sstevel@tonic-gate return (res); 2575*7c478bd9Sstevel@tonic-gate } 2576*7c478bd9Sstevel@tonic-gate 2577*7c478bd9Sstevel@tonic-gate int 2578*7c478bd9Sstevel@tonic-gate ldi_prop_exists(ldi_handle_t lh, uint_t flags, char *name) 2579*7c478bd9Sstevel@tonic-gate { 2580*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2581*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2582*7c478bd9Sstevel@tonic-gate dev_t dev; 2583*7c478bd9Sstevel@tonic-gate int res, prop_len; 2584*7c478bd9Sstevel@tonic-gate struct snode *csp; 2585*7c478bd9Sstevel@tonic-gate 2586*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 2587*7c478bd9Sstevel@tonic-gate return (0); 2588*7c478bd9Sstevel@tonic-gate 2589*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2590*7c478bd9Sstevel@tonic-gate 2591*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2592*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2593*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2594*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2595*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2596*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2597*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2598*7c478bd9Sstevel@tonic-gate 2599*7c478bd9Sstevel@tonic-gate /* if NULL dip, prop does NOT exist */ 2600*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2601*7c478bd9Sstevel@tonic-gate return (0); 2602*7c478bd9Sstevel@tonic-gate 2603*7c478bd9Sstevel@tonic-gate if (flags & LDI_DEV_T_ANY) { 2604*7c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 2605*7c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 2606*7c478bd9Sstevel@tonic-gate } 2607*7c478bd9Sstevel@tonic-gate 2608*7c478bd9Sstevel@tonic-gate /* 2609*7c478bd9Sstevel@tonic-gate * first call the drivers prop_op interface to allow it 2610*7c478bd9Sstevel@tonic-gate * it to override default property values. 2611*7c478bd9Sstevel@tonic-gate */ 2612*7c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN, 2613*7c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, NULL, &prop_len); 2614*7c478bd9Sstevel@tonic-gate 2615*7c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 2616*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2617*7c478bd9Sstevel@tonic-gate return (1); 2618*7c478bd9Sstevel@tonic-gate } 2619*7c478bd9Sstevel@tonic-gate 2620*7c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 2621*7c478bd9Sstevel@tonic-gate res = ddi_prop_exists(dev, dip, flags, name); 2622*7c478bd9Sstevel@tonic-gate 2623*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2624*7c478bd9Sstevel@tonic-gate return (res); 2625*7c478bd9Sstevel@tonic-gate } 2626*7c478bd9Sstevel@tonic-gate 2627*7c478bd9Sstevel@tonic-gate int 2628*7c478bd9Sstevel@tonic-gate ldi_get_eventcookie(ldi_handle_t lh, char *name, ddi_eventcookie_t *ecp) 2629*7c478bd9Sstevel@tonic-gate { 2630*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2631*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2632*7c478bd9Sstevel@tonic-gate dev_t dev; 2633*7c478bd9Sstevel@tonic-gate int res; 2634*7c478bd9Sstevel@tonic-gate struct snode *csp; 2635*7c478bd9Sstevel@tonic-gate 2636*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || 2637*7c478bd9Sstevel@tonic-gate (strlen(name) == 0) || (ecp == NULL)) { 2638*7c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 2639*7c478bd9Sstevel@tonic-gate } 2640*7c478bd9Sstevel@tonic-gate 2641*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 2642*7c478bd9Sstevel@tonic-gate 2643*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2644*7c478bd9Sstevel@tonic-gate 2645*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2646*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2647*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2648*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2649*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2650*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2651*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2652*7c478bd9Sstevel@tonic-gate 2653*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2654*7c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 2655*7c478bd9Sstevel@tonic-gate 2656*7c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_NOTE, "%s: event_name=%s, " 2657*7c478bd9Sstevel@tonic-gate "dip=0x%p, event_cookiep=0x%p", "ldi_get_eventcookie", 2658*7c478bd9Sstevel@tonic-gate name, (void *)dip, (void *)ecp)); 2659*7c478bd9Sstevel@tonic-gate 2660*7c478bd9Sstevel@tonic-gate res = ddi_get_eventcookie(dip, name, ecp); 2661*7c478bd9Sstevel@tonic-gate 2662*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2663*7c478bd9Sstevel@tonic-gate return (res); 2664*7c478bd9Sstevel@tonic-gate } 2665*7c478bd9Sstevel@tonic-gate 2666*7c478bd9Sstevel@tonic-gate int 2667*7c478bd9Sstevel@tonic-gate ldi_add_event_handler(ldi_handle_t lh, ddi_eventcookie_t ec, 2668*7c478bd9Sstevel@tonic-gate void (*handler)(ldi_handle_t, ddi_eventcookie_t, void *, void *), 2669*7c478bd9Sstevel@tonic-gate void *arg, ldi_callback_id_t *id) 2670*7c478bd9Sstevel@tonic-gate { 2671*7c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2672*7c478bd9Sstevel@tonic-gate struct ldi_event *lep; 2673*7c478bd9Sstevel@tonic-gate dev_info_t *dip; 2674*7c478bd9Sstevel@tonic-gate dev_t dev; 2675*7c478bd9Sstevel@tonic-gate int res; 2676*7c478bd9Sstevel@tonic-gate struct snode *csp; 2677*7c478bd9Sstevel@tonic-gate 2678*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (ec == NULL) || (handler == NULL) || (id == NULL)) 2679*7c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 2680*7c478bd9Sstevel@tonic-gate 2681*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 2682*7c478bd9Sstevel@tonic-gate 2683*7c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 2684*7c478bd9Sstevel@tonic-gate 2685*7c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 2686*7c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 2687*7c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 2688*7c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 2689*7c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 2690*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2691*7c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 2692*7c478bd9Sstevel@tonic-gate 2693*7c478bd9Sstevel@tonic-gate if (dip == NULL) 2694*7c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 2695*7c478bd9Sstevel@tonic-gate 2696*7c478bd9Sstevel@tonic-gate lep = kmem_zalloc(sizeof (struct ldi_event), KM_SLEEP); 2697*7c478bd9Sstevel@tonic-gate lep->le_lhp = handlep; 2698*7c478bd9Sstevel@tonic-gate lep->le_arg = arg; 2699*7c478bd9Sstevel@tonic-gate lep->le_handler = handler; 2700*7c478bd9Sstevel@tonic-gate 2701*7c478bd9Sstevel@tonic-gate if ((res = ddi_add_event_handler(dip, ec, i_ldi_callback, 2702*7c478bd9Sstevel@tonic-gate (void *)lep, &lep->le_id)) != DDI_SUCCESS) { 2703*7c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_WARN, "%s: unable to add" 2704*7c478bd9Sstevel@tonic-gate "event callback", "ldi_add_event_handler")); 2705*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2706*7c478bd9Sstevel@tonic-gate kmem_free(lep, sizeof (struct ldi_event)); 2707*7c478bd9Sstevel@tonic-gate return (res); 2708*7c478bd9Sstevel@tonic-gate } 2709*7c478bd9Sstevel@tonic-gate 2710*7c478bd9Sstevel@tonic-gate *id = (ldi_callback_id_t)lep; 2711*7c478bd9Sstevel@tonic-gate 2712*7c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_NOTE, "%s: dip=0x%p, event=0x%p, " 2713*7c478bd9Sstevel@tonic-gate "ldi_eventp=0x%p, cb_id=0x%p", "ldi_add_event_handler", 2714*7c478bd9Sstevel@tonic-gate (void *)dip, (void *)ec, (void *)lep, (void *)id)); 2715*7c478bd9Sstevel@tonic-gate 2716*7c478bd9Sstevel@tonic-gate handle_event_add(lep); 2717*7c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 2718*7c478bd9Sstevel@tonic-gate return (res); 2719*7c478bd9Sstevel@tonic-gate } 2720*7c478bd9Sstevel@tonic-gate 2721*7c478bd9Sstevel@tonic-gate int 2722*7c478bd9Sstevel@tonic-gate ldi_remove_event_handler(ldi_handle_t lh, ldi_callback_id_t id) 2723*7c478bd9Sstevel@tonic-gate { 2724*7c478bd9Sstevel@tonic-gate ldi_event_t *lep = (ldi_event_t *)id; 2725*7c478bd9Sstevel@tonic-gate int res; 2726*7c478bd9Sstevel@tonic-gate 2727*7c478bd9Sstevel@tonic-gate if ((lh == NULL) || (id == NULL)) 2728*7c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 2729*7c478bd9Sstevel@tonic-gate 2730*7c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 2731*7c478bd9Sstevel@tonic-gate 2732*7c478bd9Sstevel@tonic-gate if ((res = ddi_remove_event_handler(lep->le_id)) 2733*7c478bd9Sstevel@tonic-gate != DDI_SUCCESS) { 2734*7c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_WARN, "%s: unable to remove " 2735*7c478bd9Sstevel@tonic-gate "event callback", "ldi_remove_event_handler")); 2736*7c478bd9Sstevel@tonic-gate return (res); 2737*7c478bd9Sstevel@tonic-gate } 2738*7c478bd9Sstevel@tonic-gate 2739*7c478bd9Sstevel@tonic-gate handle_event_remove(lep); 2740*7c478bd9Sstevel@tonic-gate kmem_free(lep, sizeof (struct ldi_event)); 2741*7c478bd9Sstevel@tonic-gate return (res); 2742*7c478bd9Sstevel@tonic-gate } 2743