17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5184cd04cScth * Common Development and Distribution License (the "License"). 6184cd04cScth * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*dcba9f3fSGeorge Wilson * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate /* 277c478bd9Sstevel@tonic-gate * Layered driver support. 287c478bd9Sstevel@tonic-gate */ 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate #include <sys/atomic.h> 317c478bd9Sstevel@tonic-gate #include <sys/types.h> 327c478bd9Sstevel@tonic-gate #include <sys/t_lock.h> 337c478bd9Sstevel@tonic-gate #include <sys/param.h> 347c478bd9Sstevel@tonic-gate #include <sys/conf.h> 357c478bd9Sstevel@tonic-gate #include <sys/systm.h> 367c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h> 377c478bd9Sstevel@tonic-gate #include <sys/buf.h> 387c478bd9Sstevel@tonic-gate #include <sys/cred.h> 397c478bd9Sstevel@tonic-gate #include <sys/uio.h> 407c478bd9Sstevel@tonic-gate #include <sys/vnode.h> 417c478bd9Sstevel@tonic-gate #include <sys/fs/snode.h> 427c478bd9Sstevel@tonic-gate #include <sys/open.h> 437c478bd9Sstevel@tonic-gate #include <sys/kmem.h> 447c478bd9Sstevel@tonic-gate #include <sys/file.h> 457c478bd9Sstevel@tonic-gate #include <sys/bootconf.h> 467c478bd9Sstevel@tonic-gate #include <sys/pathname.h> 477c478bd9Sstevel@tonic-gate #include <sys/bitmap.h> 487c478bd9Sstevel@tonic-gate #include <sys/stat.h> 497c478bd9Sstevel@tonic-gate #include <sys/dditypes.h> 507c478bd9Sstevel@tonic-gate #include <sys/ddi_impldefs.h> 517c478bd9Sstevel@tonic-gate #include <sys/ddi.h> 527c478bd9Sstevel@tonic-gate #include <sys/sunddi.h> 537c478bd9Sstevel@tonic-gate #include <sys/sunndi.h> 547c478bd9Sstevel@tonic-gate #include <sys/esunddi.h> 557c478bd9Sstevel@tonic-gate #include <sys/autoconf.h> 567c478bd9Sstevel@tonic-gate #include <sys/sunldi.h> 577c478bd9Sstevel@tonic-gate #include <sys/sunldi_impl.h> 587c478bd9Sstevel@tonic-gate #include <sys/errno.h> 597c478bd9Sstevel@tonic-gate #include <sys/debug.h> 607c478bd9Sstevel@tonic-gate #include <sys/modctl.h> 617c478bd9Sstevel@tonic-gate #include <sys/var.h> 627c478bd9Sstevel@tonic-gate #include <vm/seg_vn.h> 637c478bd9Sstevel@tonic-gate 647c478bd9Sstevel@tonic-gate #include <sys/stropts.h> 657c478bd9Sstevel@tonic-gate #include <sys/strsubr.h> 667c478bd9Sstevel@tonic-gate #include <sys/socket.h> 677c478bd9Sstevel@tonic-gate #include <sys/socketvar.h> 687c478bd9Sstevel@tonic-gate #include <sys/kstr.h> 697c478bd9Sstevel@tonic-gate 7025e8c5aaSvikram /* 7125e8c5aaSvikram * Device contract related 7225e8c5aaSvikram */ 7325e8c5aaSvikram #include <sys/contract_impl.h> 7425e8c5aaSvikram #include <sys/contract/device_impl.h> 757c478bd9Sstevel@tonic-gate 767c478bd9Sstevel@tonic-gate /* 777c478bd9Sstevel@tonic-gate * Define macros to manipulate snode, vnode, and open device flags 787c478bd9Sstevel@tonic-gate */ 797c478bd9Sstevel@tonic-gate #define VTYP_VALID(i) (((i) == VCHR) || ((i) == VBLK)) 807c478bd9Sstevel@tonic-gate #define VTYP_TO_OTYP(i) (((i) == VCHR) ? OTYP_CHR : OTYP_BLK) 817c478bd9Sstevel@tonic-gate #define VTYP_TO_STYP(i) (((i) == VCHR) ? S_IFCHR : S_IFBLK) 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate #define OTYP_VALID(i) (((i) == OTYP_CHR) || ((i) == OTYP_BLK)) 847c478bd9Sstevel@tonic-gate #define OTYP_TO_VTYP(i) (((i) == OTYP_CHR) ? VCHR : VBLK) 857c478bd9Sstevel@tonic-gate #define OTYP_TO_STYP(i) (((i) == OTYP_CHR) ? S_IFCHR : S_IFBLK) 867c478bd9Sstevel@tonic-gate 877c478bd9Sstevel@tonic-gate #define STYP_VALID(i) (((i) == S_IFCHR) || ((i) == S_IFBLK)) 887c478bd9Sstevel@tonic-gate #define STYP_TO_VTYP(i) (((i) == S_IFCHR) ? VCHR : VBLK) 897c478bd9Sstevel@tonic-gate 907c478bd9Sstevel@tonic-gate /* 917c478bd9Sstevel@tonic-gate * Define macros for accessing layered driver hash structures 927c478bd9Sstevel@tonic-gate */ 937c478bd9Sstevel@tonic-gate #define LH_HASH(vp) (handle_hash_func(vp) % LH_HASH_SZ) 947c478bd9Sstevel@tonic-gate #define LI_HASH(mid, dip, dev) (ident_hash_func(mid, dip, dev) % LI_HASH_SZ) 957c478bd9Sstevel@tonic-gate 967c478bd9Sstevel@tonic-gate /* 977c478bd9Sstevel@tonic-gate * Define layered handle flags used in the lh_type field 987c478bd9Sstevel@tonic-gate */ 997c478bd9Sstevel@tonic-gate #define LH_STREAM (0x1) /* handle to a streams device */ 1007c478bd9Sstevel@tonic-gate #define LH_CBDEV (0x2) /* handle to a char/block device */ 1017c478bd9Sstevel@tonic-gate 1027c478bd9Sstevel@tonic-gate /* 10325e8c5aaSvikram * Define macro for devid property lookups 1047c478bd9Sstevel@tonic-gate */ 1057c478bd9Sstevel@tonic-gate #define DEVID_PROP_FLAGS (DDI_PROP_DONTPASS | \ 1067c478bd9Sstevel@tonic-gate DDI_PROP_TYPE_STRING|DDI_PROP_CANSLEEP) 1077c478bd9Sstevel@tonic-gate 10825e8c5aaSvikram /* 10925e8c5aaSvikram * Dummy string for NDI events 11025e8c5aaSvikram */ 11125e8c5aaSvikram #define NDI_EVENT_SERVICE "NDI_EVENT_SERVICE" 11225e8c5aaSvikram 11325e8c5aaSvikram static void ldi_ev_lock(void); 11425e8c5aaSvikram static void ldi_ev_unlock(void); 11525e8c5aaSvikram 11625e8c5aaSvikram #ifdef LDI_OBSOLETE_EVENT 11725e8c5aaSvikram int ldi_remove_event_handler(ldi_handle_t lh, ldi_callback_id_t id); 11825e8c5aaSvikram #endif 11925e8c5aaSvikram 1207c478bd9Sstevel@tonic-gate 1217c478bd9Sstevel@tonic-gate /* 1227c478bd9Sstevel@tonic-gate * globals 1237c478bd9Sstevel@tonic-gate */ 1247c478bd9Sstevel@tonic-gate static kmutex_t ldi_ident_hash_lock[LI_HASH_SZ]; 1257c478bd9Sstevel@tonic-gate static struct ldi_ident *ldi_ident_hash[LI_HASH_SZ]; 1267c478bd9Sstevel@tonic-gate 1277c478bd9Sstevel@tonic-gate static kmutex_t ldi_handle_hash_lock[LH_HASH_SZ]; 1287c478bd9Sstevel@tonic-gate static struct ldi_handle *ldi_handle_hash[LH_HASH_SZ]; 1297c478bd9Sstevel@tonic-gate static size_t ldi_handle_hash_count; 1307c478bd9Sstevel@tonic-gate 13125e8c5aaSvikram static struct ldi_ev_callback_list ldi_ev_callback_list; 13225e8c5aaSvikram 13325e8c5aaSvikram static uint32_t ldi_ev_id_pool = 0; 13425e8c5aaSvikram 13525e8c5aaSvikram struct ldi_ev_cookie { 13625e8c5aaSvikram char *ck_evname; 13725e8c5aaSvikram uint_t ck_sync; 13825e8c5aaSvikram uint_t ck_ctype; 13925e8c5aaSvikram }; 14025e8c5aaSvikram 14125e8c5aaSvikram static struct ldi_ev_cookie ldi_ev_cookies[] = { 14225e8c5aaSvikram { LDI_EV_OFFLINE, 1, CT_DEV_EV_OFFLINE}, 14325e8c5aaSvikram { LDI_EV_DEGRADE, 0, CT_DEV_EV_DEGRADED}, 14425e8c5aaSvikram { NULL} /* must terminate list */ 14525e8c5aaSvikram }; 14625e8c5aaSvikram 1477c478bd9Sstevel@tonic-gate void 1487c478bd9Sstevel@tonic-gate ldi_init(void) 1497c478bd9Sstevel@tonic-gate { 1507c478bd9Sstevel@tonic-gate int i; 1517c478bd9Sstevel@tonic-gate 1527c478bd9Sstevel@tonic-gate ldi_handle_hash_count = 0; 1537c478bd9Sstevel@tonic-gate for (i = 0; i < LH_HASH_SZ; i++) { 1547c478bd9Sstevel@tonic-gate mutex_init(&ldi_handle_hash_lock[i], NULL, MUTEX_DEFAULT, NULL); 1557c478bd9Sstevel@tonic-gate ldi_handle_hash[i] = NULL; 1567c478bd9Sstevel@tonic-gate } 1577c478bd9Sstevel@tonic-gate for (i = 0; i < LI_HASH_SZ; i++) { 1587c478bd9Sstevel@tonic-gate mutex_init(&ldi_ident_hash_lock[i], NULL, MUTEX_DEFAULT, NULL); 1597c478bd9Sstevel@tonic-gate ldi_ident_hash[i] = NULL; 1607c478bd9Sstevel@tonic-gate } 16125e8c5aaSvikram 16225e8c5aaSvikram /* 16325e8c5aaSvikram * Initialize the LDI event subsystem 16425e8c5aaSvikram */ 16525e8c5aaSvikram mutex_init(&ldi_ev_callback_list.le_lock, NULL, MUTEX_DEFAULT, NULL); 16625e8c5aaSvikram cv_init(&ldi_ev_callback_list.le_cv, NULL, CV_DEFAULT, NULL); 16725e8c5aaSvikram ldi_ev_callback_list.le_busy = 0; 16825e8c5aaSvikram ldi_ev_callback_list.le_thread = NULL; 16925e8c5aaSvikram list_create(&ldi_ev_callback_list.le_head, 17025e8c5aaSvikram sizeof (ldi_ev_callback_impl_t), 17125e8c5aaSvikram offsetof(ldi_ev_callback_impl_t, lec_list)); 1727c478bd9Sstevel@tonic-gate } 1737c478bd9Sstevel@tonic-gate 1747c478bd9Sstevel@tonic-gate /* 1757c478bd9Sstevel@tonic-gate * LDI ident manipulation functions 1767c478bd9Sstevel@tonic-gate */ 1777c478bd9Sstevel@tonic-gate static uint_t 1787c478bd9Sstevel@tonic-gate ident_hash_func(modid_t modid, dev_info_t *dip, dev_t dev) 1797c478bd9Sstevel@tonic-gate { 1807c478bd9Sstevel@tonic-gate if (dip != NULL) { 1817c478bd9Sstevel@tonic-gate uintptr_t k = (uintptr_t)dip; 1827c478bd9Sstevel@tonic-gate k >>= (int)highbit(sizeof (struct dev_info)); 1837c478bd9Sstevel@tonic-gate return ((uint_t)k); 1847c478bd9Sstevel@tonic-gate } else if (dev != DDI_DEV_T_NONE) { 1857c478bd9Sstevel@tonic-gate return (modid + getminor(dev) + getmajor(dev)); 1867c478bd9Sstevel@tonic-gate } else { 1877c478bd9Sstevel@tonic-gate return (modid); 1887c478bd9Sstevel@tonic-gate } 1897c478bd9Sstevel@tonic-gate } 1907c478bd9Sstevel@tonic-gate 1917c478bd9Sstevel@tonic-gate static struct ldi_ident ** 1927c478bd9Sstevel@tonic-gate ident_find_ref_nolock(modid_t modid, dev_info_t *dip, dev_t dev, major_t major) 1937c478bd9Sstevel@tonic-gate { 1947c478bd9Sstevel@tonic-gate struct ldi_ident **lipp = NULL; 1957c478bd9Sstevel@tonic-gate uint_t index = LI_HASH(modid, dip, dev); 1967c478bd9Sstevel@tonic-gate 1977c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&ldi_ident_hash_lock[index])); 1987c478bd9Sstevel@tonic-gate 1997c478bd9Sstevel@tonic-gate for (lipp = &(ldi_ident_hash[index]); 2007c478bd9Sstevel@tonic-gate (*lipp != NULL); 2017c478bd9Sstevel@tonic-gate lipp = &((*lipp)->li_next)) { 2027c478bd9Sstevel@tonic-gate if (((*lipp)->li_modid == modid) && 2037c478bd9Sstevel@tonic-gate ((*lipp)->li_major == major) && 2047c478bd9Sstevel@tonic-gate ((*lipp)->li_dip == dip) && 2057c478bd9Sstevel@tonic-gate ((*lipp)->li_dev == dev)) 2067c478bd9Sstevel@tonic-gate break; 2077c478bd9Sstevel@tonic-gate } 2087c478bd9Sstevel@tonic-gate 2097c478bd9Sstevel@tonic-gate ASSERT(lipp != NULL); 2107c478bd9Sstevel@tonic-gate return (lipp); 2117c478bd9Sstevel@tonic-gate } 2127c478bd9Sstevel@tonic-gate 2137c478bd9Sstevel@tonic-gate static struct ldi_ident * 2147c478bd9Sstevel@tonic-gate ident_alloc(char *mod_name, dev_info_t *dip, dev_t dev, major_t major) 2157c478bd9Sstevel@tonic-gate { 2167c478bd9Sstevel@tonic-gate struct ldi_ident *lip, **lipp; 2177c478bd9Sstevel@tonic-gate modid_t modid; 2187c478bd9Sstevel@tonic-gate uint_t index; 2197c478bd9Sstevel@tonic-gate 2207c478bd9Sstevel@tonic-gate ASSERT(mod_name != NULL); 2217c478bd9Sstevel@tonic-gate 2227c478bd9Sstevel@tonic-gate /* get the module id */ 2237c478bd9Sstevel@tonic-gate modid = mod_name_to_modid(mod_name); 2247c478bd9Sstevel@tonic-gate ASSERT(modid != -1); 2257c478bd9Sstevel@tonic-gate 2267c478bd9Sstevel@tonic-gate /* allocate a new ident in case we need it */ 2277c478bd9Sstevel@tonic-gate lip = kmem_zalloc(sizeof (*lip), KM_SLEEP); 2287c478bd9Sstevel@tonic-gate 2297c478bd9Sstevel@tonic-gate /* search the hash for a matching ident */ 2307c478bd9Sstevel@tonic-gate index = LI_HASH(modid, dip, dev); 2317c478bd9Sstevel@tonic-gate mutex_enter(&ldi_ident_hash_lock[index]); 2327c478bd9Sstevel@tonic-gate lipp = ident_find_ref_nolock(modid, dip, dev, major); 2337c478bd9Sstevel@tonic-gate 2347c478bd9Sstevel@tonic-gate if (*lipp != NULL) { 235e88e0d0aSJerry Gilliam /* we found an ident in the hash */ 2367c478bd9Sstevel@tonic-gate ASSERT(strcmp((*lipp)->li_modname, mod_name) == 0); 2377c478bd9Sstevel@tonic-gate (*lipp)->li_ref++; 2387c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 2397c478bd9Sstevel@tonic-gate kmem_free(lip, sizeof (struct ldi_ident)); 2407c478bd9Sstevel@tonic-gate return (*lipp); 2417c478bd9Sstevel@tonic-gate } 2427c478bd9Sstevel@tonic-gate 2437c478bd9Sstevel@tonic-gate /* initialize the new ident */ 2447c478bd9Sstevel@tonic-gate lip->li_next = NULL; 2457c478bd9Sstevel@tonic-gate lip->li_ref = 1; 2467c478bd9Sstevel@tonic-gate lip->li_modid = modid; 2477c478bd9Sstevel@tonic-gate lip->li_major = major; 2487c478bd9Sstevel@tonic-gate lip->li_dip = dip; 2497c478bd9Sstevel@tonic-gate lip->li_dev = dev; 2507c478bd9Sstevel@tonic-gate (void) strncpy(lip->li_modname, mod_name, sizeof (lip->li_modname) - 1); 2517c478bd9Sstevel@tonic-gate 2527c478bd9Sstevel@tonic-gate /* add it to the ident hash */ 2537c478bd9Sstevel@tonic-gate lip->li_next = ldi_ident_hash[index]; 2547c478bd9Sstevel@tonic-gate ldi_ident_hash[index] = lip; 2557c478bd9Sstevel@tonic-gate 2567c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 2577c478bd9Sstevel@tonic-gate return (lip); 2587c478bd9Sstevel@tonic-gate } 2597c478bd9Sstevel@tonic-gate 2607c478bd9Sstevel@tonic-gate static void 2617c478bd9Sstevel@tonic-gate ident_hold(struct ldi_ident *lip) 2627c478bd9Sstevel@tonic-gate { 2637c478bd9Sstevel@tonic-gate uint_t index; 2647c478bd9Sstevel@tonic-gate 2657c478bd9Sstevel@tonic-gate ASSERT(lip != NULL); 2667c478bd9Sstevel@tonic-gate index = LI_HASH(lip->li_modid, lip->li_dip, lip->li_dev); 2677c478bd9Sstevel@tonic-gate mutex_enter(&ldi_ident_hash_lock[index]); 2687c478bd9Sstevel@tonic-gate ASSERT(lip->li_ref > 0); 2697c478bd9Sstevel@tonic-gate lip->li_ref++; 2707c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 2717c478bd9Sstevel@tonic-gate } 2727c478bd9Sstevel@tonic-gate 2737c478bd9Sstevel@tonic-gate static void 2747c478bd9Sstevel@tonic-gate ident_release(struct ldi_ident *lip) 2757c478bd9Sstevel@tonic-gate { 2767c478bd9Sstevel@tonic-gate struct ldi_ident **lipp; 2777c478bd9Sstevel@tonic-gate uint_t index; 2787c478bd9Sstevel@tonic-gate 2797c478bd9Sstevel@tonic-gate ASSERT(lip != NULL); 2807c478bd9Sstevel@tonic-gate index = LI_HASH(lip->li_modid, lip->li_dip, lip->li_dev); 2817c478bd9Sstevel@tonic-gate mutex_enter(&ldi_ident_hash_lock[index]); 2827c478bd9Sstevel@tonic-gate 2837c478bd9Sstevel@tonic-gate ASSERT(lip->li_ref > 0); 2847c478bd9Sstevel@tonic-gate if (--lip->li_ref > 0) { 2857c478bd9Sstevel@tonic-gate /* there are more references to this ident */ 2867c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 2877c478bd9Sstevel@tonic-gate return; 2887c478bd9Sstevel@tonic-gate } 2897c478bd9Sstevel@tonic-gate 2907c478bd9Sstevel@tonic-gate /* this was the last reference/open for this ident. free it. */ 2917c478bd9Sstevel@tonic-gate lipp = ident_find_ref_nolock( 2927c478bd9Sstevel@tonic-gate lip->li_modid, lip->li_dip, lip->li_dev, lip->li_major); 2937c478bd9Sstevel@tonic-gate 2947c478bd9Sstevel@tonic-gate ASSERT((lipp != NULL) && (*lipp != NULL)); 2957c478bd9Sstevel@tonic-gate *lipp = lip->li_next; 2967c478bd9Sstevel@tonic-gate mutex_exit(&ldi_ident_hash_lock[index]); 2977c478bd9Sstevel@tonic-gate kmem_free(lip, sizeof (struct ldi_ident)); 2987c478bd9Sstevel@tonic-gate } 2997c478bd9Sstevel@tonic-gate 3007c478bd9Sstevel@tonic-gate /* 3017c478bd9Sstevel@tonic-gate * LDI handle manipulation functions 3027c478bd9Sstevel@tonic-gate */ 3037c478bd9Sstevel@tonic-gate static uint_t 3047c478bd9Sstevel@tonic-gate handle_hash_func(void *vp) 3057c478bd9Sstevel@tonic-gate { 3067c478bd9Sstevel@tonic-gate uintptr_t k = (uintptr_t)vp; 3077c478bd9Sstevel@tonic-gate k >>= (int)highbit(sizeof (vnode_t)); 3087c478bd9Sstevel@tonic-gate return ((uint_t)k); 3097c478bd9Sstevel@tonic-gate } 3107c478bd9Sstevel@tonic-gate 3117c478bd9Sstevel@tonic-gate static struct ldi_handle ** 3127c478bd9Sstevel@tonic-gate handle_find_ref_nolock(vnode_t *vp, struct ldi_ident *ident) 3137c478bd9Sstevel@tonic-gate { 3147c478bd9Sstevel@tonic-gate struct ldi_handle **lhpp = NULL; 3157c478bd9Sstevel@tonic-gate uint_t index = LH_HASH(vp); 3167c478bd9Sstevel@tonic-gate 3177c478bd9Sstevel@tonic-gate ASSERT(MUTEX_HELD(&ldi_handle_hash_lock[index])); 3187c478bd9Sstevel@tonic-gate 3197c478bd9Sstevel@tonic-gate for (lhpp = &(ldi_handle_hash[index]); 3207c478bd9Sstevel@tonic-gate (*lhpp != NULL); 3217c478bd9Sstevel@tonic-gate lhpp = &((*lhpp)->lh_next)) { 3227c478bd9Sstevel@tonic-gate if (((*lhpp)->lh_ident == ident) && 3237c478bd9Sstevel@tonic-gate ((*lhpp)->lh_vp == vp)) 3247c478bd9Sstevel@tonic-gate break; 3257c478bd9Sstevel@tonic-gate } 3267c478bd9Sstevel@tonic-gate 3277c478bd9Sstevel@tonic-gate ASSERT(lhpp != NULL); 3287c478bd9Sstevel@tonic-gate return (lhpp); 3297c478bd9Sstevel@tonic-gate } 3307c478bd9Sstevel@tonic-gate 3317c478bd9Sstevel@tonic-gate static struct ldi_handle * 3327c478bd9Sstevel@tonic-gate handle_find(vnode_t *vp, struct ldi_ident *ident) 3337c478bd9Sstevel@tonic-gate { 3347c478bd9Sstevel@tonic-gate struct ldi_handle **lhpp; 3357c478bd9Sstevel@tonic-gate int index = LH_HASH(vp); 3367c478bd9Sstevel@tonic-gate 3377c478bd9Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[index]); 3387c478bd9Sstevel@tonic-gate lhpp = handle_find_ref_nolock(vp, ident); 3397c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 3407c478bd9Sstevel@tonic-gate ASSERT(lhpp != NULL); 3417c478bd9Sstevel@tonic-gate return (*lhpp); 3427c478bd9Sstevel@tonic-gate } 3437c478bd9Sstevel@tonic-gate 3447c478bd9Sstevel@tonic-gate static struct ldi_handle * 3457c478bd9Sstevel@tonic-gate handle_alloc(vnode_t *vp, struct ldi_ident *ident) 3467c478bd9Sstevel@tonic-gate { 3477c478bd9Sstevel@tonic-gate struct ldi_handle *lhp, **lhpp; 3487c478bd9Sstevel@tonic-gate uint_t index; 3497c478bd9Sstevel@tonic-gate 3507c478bd9Sstevel@tonic-gate ASSERT((vp != NULL) && (ident != NULL)); 3517c478bd9Sstevel@tonic-gate 3527c478bd9Sstevel@tonic-gate /* allocate a new handle in case we need it */ 3537c478bd9Sstevel@tonic-gate lhp = kmem_zalloc(sizeof (*lhp), KM_SLEEP); 3547c478bd9Sstevel@tonic-gate 3557c478bd9Sstevel@tonic-gate /* search the hash for a matching handle */ 3567c478bd9Sstevel@tonic-gate index = LH_HASH(vp); 3577c478bd9Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[index]); 3587c478bd9Sstevel@tonic-gate lhpp = handle_find_ref_nolock(vp, ident); 3597c478bd9Sstevel@tonic-gate 3607c478bd9Sstevel@tonic-gate if (*lhpp != NULL) { 3617c478bd9Sstevel@tonic-gate /* we found a handle in the hash */ 3627c478bd9Sstevel@tonic-gate (*lhpp)->lh_ref++; 3637c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 3647c478bd9Sstevel@tonic-gate 3657c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "ldi handle alloc: dup " 366184cd04cScth "lh=0x%p, ident=0x%p, vp=0x%p, drv=%s, minor=0x%x", 367184cd04cScth (void *)*lhpp, (void *)ident, (void *)vp, 368184cd04cScth mod_major_to_name(getmajor(vp->v_rdev)), 369184cd04cScth getminor(vp->v_rdev))); 3707c478bd9Sstevel@tonic-gate 3717c478bd9Sstevel@tonic-gate kmem_free(lhp, sizeof (struct ldi_handle)); 3727c478bd9Sstevel@tonic-gate return (*lhpp); 3737c478bd9Sstevel@tonic-gate } 3747c478bd9Sstevel@tonic-gate 3757c478bd9Sstevel@tonic-gate /* initialize the new handle */ 3767c478bd9Sstevel@tonic-gate lhp->lh_ref = 1; 3777c478bd9Sstevel@tonic-gate lhp->lh_vp = vp; 3787c478bd9Sstevel@tonic-gate lhp->lh_ident = ident; 37925e8c5aaSvikram #ifdef LDI_OBSOLETE_EVENT 3807c478bd9Sstevel@tonic-gate mutex_init(lhp->lh_lock, NULL, MUTEX_DEFAULT, NULL); 38125e8c5aaSvikram #endif 3827c478bd9Sstevel@tonic-gate 3837c478bd9Sstevel@tonic-gate /* set the device type for this handle */ 3847c478bd9Sstevel@tonic-gate lhp->lh_type = 0; 385349dcea3SGarrett D'Amore if (vp->v_stream) { 3867c478bd9Sstevel@tonic-gate ASSERT(vp->v_type == VCHR); 3877c478bd9Sstevel@tonic-gate lhp->lh_type |= LH_STREAM; 3887c478bd9Sstevel@tonic-gate } else { 3897c478bd9Sstevel@tonic-gate lhp->lh_type |= LH_CBDEV; 3907c478bd9Sstevel@tonic-gate } 3917c478bd9Sstevel@tonic-gate 3927c478bd9Sstevel@tonic-gate /* get holds on other objects */ 3937c478bd9Sstevel@tonic-gate ident_hold(ident); 3947c478bd9Sstevel@tonic-gate ASSERT(vp->v_count >= 1); 3957c478bd9Sstevel@tonic-gate VN_HOLD(vp); 3967c478bd9Sstevel@tonic-gate 3977c478bd9Sstevel@tonic-gate /* add it to the handle hash */ 3987c478bd9Sstevel@tonic-gate lhp->lh_next = ldi_handle_hash[index]; 3997c478bd9Sstevel@tonic-gate ldi_handle_hash[index] = lhp; 4007c478bd9Sstevel@tonic-gate atomic_add_long(&ldi_handle_hash_count, 1); 4017c478bd9Sstevel@tonic-gate 4027c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "ldi handle alloc: new " 403184cd04cScth "lh=0x%p, ident=0x%p, vp=0x%p, drv=%s, minor=0x%x", 404184cd04cScth (void *)lhp, (void *)ident, (void *)vp, 405184cd04cScth mod_major_to_name(getmajor(vp->v_rdev)), 406184cd04cScth getminor(vp->v_rdev))); 4077c478bd9Sstevel@tonic-gate 4087c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 4097c478bd9Sstevel@tonic-gate return (lhp); 4107c478bd9Sstevel@tonic-gate } 4117c478bd9Sstevel@tonic-gate 4127c478bd9Sstevel@tonic-gate static void 4137c478bd9Sstevel@tonic-gate handle_release(struct ldi_handle *lhp) 4147c478bd9Sstevel@tonic-gate { 4157c478bd9Sstevel@tonic-gate struct ldi_handle **lhpp; 4167c478bd9Sstevel@tonic-gate uint_t index; 4177c478bd9Sstevel@tonic-gate 4187c478bd9Sstevel@tonic-gate ASSERT(lhp != NULL); 4197c478bd9Sstevel@tonic-gate 4207c478bd9Sstevel@tonic-gate index = LH_HASH(lhp->lh_vp); 4217c478bd9Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[index]); 4227c478bd9Sstevel@tonic-gate 4237c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "ldi handle release: " 424184cd04cScth "lh=0x%p, ident=0x%p, vp=0x%p, drv=%s, minor=0x%x", 425184cd04cScth (void *)lhp, (void *)lhp->lh_ident, (void *)lhp->lh_vp, 426184cd04cScth mod_major_to_name(getmajor(lhp->lh_vp->v_rdev)), 427184cd04cScth getminor(lhp->lh_vp->v_rdev))); 4287c478bd9Sstevel@tonic-gate 4297c478bd9Sstevel@tonic-gate ASSERT(lhp->lh_ref > 0); 4307c478bd9Sstevel@tonic-gate if (--lhp->lh_ref > 0) { 4317c478bd9Sstevel@tonic-gate /* there are more references to this handle */ 4327c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 4337c478bd9Sstevel@tonic-gate return; 4347c478bd9Sstevel@tonic-gate } 4357c478bd9Sstevel@tonic-gate 4367c478bd9Sstevel@tonic-gate /* this was the last reference/open for this handle. free it. */ 4377c478bd9Sstevel@tonic-gate lhpp = handle_find_ref_nolock(lhp->lh_vp, lhp->lh_ident); 4387c478bd9Sstevel@tonic-gate ASSERT((lhpp != NULL) && (*lhpp != NULL)); 4397c478bd9Sstevel@tonic-gate *lhpp = lhp->lh_next; 4407c478bd9Sstevel@tonic-gate atomic_add_long(&ldi_handle_hash_count, -1); 4417c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[index]); 4427c478bd9Sstevel@tonic-gate 4437c478bd9Sstevel@tonic-gate VN_RELE(lhp->lh_vp); 4447c478bd9Sstevel@tonic-gate ident_release(lhp->lh_ident); 44525e8c5aaSvikram #ifdef LDI_OBSOLETE_EVENT 4467c478bd9Sstevel@tonic-gate mutex_destroy(lhp->lh_lock); 44725e8c5aaSvikram #endif 4487c478bd9Sstevel@tonic-gate kmem_free(lhp, sizeof (struct ldi_handle)); 4497c478bd9Sstevel@tonic-gate } 4507c478bd9Sstevel@tonic-gate 45125e8c5aaSvikram #ifdef LDI_OBSOLETE_EVENT 4527c478bd9Sstevel@tonic-gate /* 4537c478bd9Sstevel@tonic-gate * LDI event manipulation functions 4547c478bd9Sstevel@tonic-gate */ 4557c478bd9Sstevel@tonic-gate static void 4567c478bd9Sstevel@tonic-gate handle_event_add(ldi_event_t *lep) 4577c478bd9Sstevel@tonic-gate { 4587c478bd9Sstevel@tonic-gate struct ldi_handle *lhp = lep->le_lhp; 4597c478bd9Sstevel@tonic-gate 4607c478bd9Sstevel@tonic-gate ASSERT(lhp != NULL); 4617c478bd9Sstevel@tonic-gate 4627c478bd9Sstevel@tonic-gate mutex_enter(lhp->lh_lock); 4637c478bd9Sstevel@tonic-gate if (lhp->lh_events == NULL) { 4647c478bd9Sstevel@tonic-gate lhp->lh_events = lep; 4657c478bd9Sstevel@tonic-gate mutex_exit(lhp->lh_lock); 4667c478bd9Sstevel@tonic-gate return; 4677c478bd9Sstevel@tonic-gate } 4687c478bd9Sstevel@tonic-gate 4697c478bd9Sstevel@tonic-gate lep->le_next = lhp->lh_events; 4707c478bd9Sstevel@tonic-gate lhp->lh_events->le_prev = lep; 4717c478bd9Sstevel@tonic-gate lhp->lh_events = lep; 4727c478bd9Sstevel@tonic-gate mutex_exit(lhp->lh_lock); 4737c478bd9Sstevel@tonic-gate } 4747c478bd9Sstevel@tonic-gate 4757c478bd9Sstevel@tonic-gate static void 4767c478bd9Sstevel@tonic-gate handle_event_remove(ldi_event_t *lep) 4777c478bd9Sstevel@tonic-gate { 4787c478bd9Sstevel@tonic-gate struct ldi_handle *lhp = lep->le_lhp; 4797c478bd9Sstevel@tonic-gate 4807c478bd9Sstevel@tonic-gate ASSERT(lhp != NULL); 4817c478bd9Sstevel@tonic-gate 4827c478bd9Sstevel@tonic-gate mutex_enter(lhp->lh_lock); 4837c478bd9Sstevel@tonic-gate if (lep->le_prev) 4847c478bd9Sstevel@tonic-gate lep->le_prev->le_next = lep->le_next; 4857c478bd9Sstevel@tonic-gate if (lep->le_next) 4867c478bd9Sstevel@tonic-gate lep->le_next->le_prev = lep->le_prev; 4877c478bd9Sstevel@tonic-gate if (lhp->lh_events == lep) 4887c478bd9Sstevel@tonic-gate lhp->lh_events = lep->le_next; 4897c478bd9Sstevel@tonic-gate mutex_exit(lhp->lh_lock); 4907c478bd9Sstevel@tonic-gate 4917c478bd9Sstevel@tonic-gate } 4927c478bd9Sstevel@tonic-gate 4937c478bd9Sstevel@tonic-gate static void 4947c478bd9Sstevel@tonic-gate i_ldi_callback(dev_info_t *dip, ddi_eventcookie_t event_cookie, 4957c478bd9Sstevel@tonic-gate void *arg, void *bus_impldata) 4967c478bd9Sstevel@tonic-gate { 4977c478bd9Sstevel@tonic-gate ldi_event_t *lep = (ldi_event_t *)arg; 4987c478bd9Sstevel@tonic-gate 4997c478bd9Sstevel@tonic-gate ASSERT(lep != NULL); 5007c478bd9Sstevel@tonic-gate 5017c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_NOTE, "%s: dip=0x%p, " 5027c478bd9Sstevel@tonic-gate "event_cookie=0x%p, ldi_eventp=0x%p", "i_ldi_callback", 5037c478bd9Sstevel@tonic-gate (void *)dip, (void *)event_cookie, (void *)lep)); 5047c478bd9Sstevel@tonic-gate 5057c478bd9Sstevel@tonic-gate lep->le_handler(lep->le_lhp, event_cookie, lep->le_arg, bus_impldata); 5067c478bd9Sstevel@tonic-gate } 50725e8c5aaSvikram #endif 5087c478bd9Sstevel@tonic-gate 5097c478bd9Sstevel@tonic-gate /* 5107c478bd9Sstevel@tonic-gate * LDI open helper functions 5117c478bd9Sstevel@tonic-gate */ 5127c478bd9Sstevel@tonic-gate 5137c478bd9Sstevel@tonic-gate /* get a vnode to a device by dev_t and otyp */ 5147c478bd9Sstevel@tonic-gate static int 5157c478bd9Sstevel@tonic-gate ldi_vp_from_dev(dev_t dev, int otyp, vnode_t **vpp) 5167c478bd9Sstevel@tonic-gate { 5177c478bd9Sstevel@tonic-gate dev_info_t *dip; 5187c478bd9Sstevel@tonic-gate vnode_t *vp; 5197c478bd9Sstevel@tonic-gate 5207c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 5217c478bd9Sstevel@tonic-gate if ((dev == DDI_DEV_T_NONE) || (!OTYP_VALID(otyp)) || (vpp == NULL)) 5227c478bd9Sstevel@tonic-gate return (EINVAL); 5237c478bd9Sstevel@tonic-gate 5247c478bd9Sstevel@tonic-gate if ((dip = e_ddi_hold_devi_by_dev(dev, 0)) == NULL) 5257c478bd9Sstevel@tonic-gate return (ENODEV); 5267c478bd9Sstevel@tonic-gate 5277c478bd9Sstevel@tonic-gate vp = makespecvp(dev, OTYP_TO_VTYP(otyp)); 5287c478bd9Sstevel@tonic-gate spec_assoc_vp_with_devi(vp, dip); 5297c478bd9Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev */ 5307c478bd9Sstevel@tonic-gate 5317c478bd9Sstevel@tonic-gate *vpp = vp; 5327c478bd9Sstevel@tonic-gate return (0); 5337c478bd9Sstevel@tonic-gate } 5347c478bd9Sstevel@tonic-gate 5357c478bd9Sstevel@tonic-gate /* get a vnode to a device by pathname */ 536*dcba9f3fSGeorge Wilson int 5377c478bd9Sstevel@tonic-gate ldi_vp_from_name(char *path, vnode_t **vpp) 5387c478bd9Sstevel@tonic-gate { 5397c478bd9Sstevel@tonic-gate vnode_t *vp = NULL; 5407c478bd9Sstevel@tonic-gate int ret; 5417c478bd9Sstevel@tonic-gate 5427c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 5437c478bd9Sstevel@tonic-gate if ((path == NULL) || (vpp == NULL)) 5447c478bd9Sstevel@tonic-gate return (EINVAL); 5457c478bd9Sstevel@tonic-gate 5467c478bd9Sstevel@tonic-gate if (modrootloaded) { 5477c478bd9Sstevel@tonic-gate cred_t *saved_cred = curthread->t_cred; 5487c478bd9Sstevel@tonic-gate 5497c478bd9Sstevel@tonic-gate /* we don't want lookupname to fail because of credentials */ 5507c478bd9Sstevel@tonic-gate curthread->t_cred = kcred; 55186f07f8fSedp 55286f07f8fSedp /* 55386f07f8fSedp * all lookups should be done in the global zone. but 55486f07f8fSedp * lookupnameat() won't actually do this if an absolute 55586f07f8fSedp * path is passed in. since the ldi interfaces require an 55686f07f8fSedp * absolute path we pass lookupnameat() a pointer to 55786f07f8fSedp * the character after the leading '/' and tell it to 55886f07f8fSedp * start searching at the current system root directory. 55986f07f8fSedp */ 56086f07f8fSedp ASSERT(*path == '/'); 56186f07f8fSedp ret = lookupnameat(path + 1, UIO_SYSSPACE, FOLLOW, NULLVPP, 56286f07f8fSedp &vp, rootdir); 56386f07f8fSedp 56486f07f8fSedp /* restore this threads credentials */ 5657c478bd9Sstevel@tonic-gate curthread->t_cred = saved_cred; 5667c478bd9Sstevel@tonic-gate 5677c478bd9Sstevel@tonic-gate if (ret == 0) { 5687c478bd9Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops()) || 5697c478bd9Sstevel@tonic-gate !VTYP_VALID(vp->v_type)) { 5707c478bd9Sstevel@tonic-gate VN_RELE(vp); 5717c478bd9Sstevel@tonic-gate return (ENXIO); 5727c478bd9Sstevel@tonic-gate } 5737c478bd9Sstevel@tonic-gate } 5747c478bd9Sstevel@tonic-gate } 5757c478bd9Sstevel@tonic-gate 5767c478bd9Sstevel@tonic-gate if (vp == NULL) { 5777c478bd9Sstevel@tonic-gate dev_info_t *dip; 5787c478bd9Sstevel@tonic-gate dev_t dev; 5797c478bd9Sstevel@tonic-gate int spec_type; 5807c478bd9Sstevel@tonic-gate 5817c478bd9Sstevel@tonic-gate /* 5827c478bd9Sstevel@tonic-gate * Root is not mounted, the minor node is not specified, 5837c478bd9Sstevel@tonic-gate * or an OBP path has been specified. 5847c478bd9Sstevel@tonic-gate */ 5857c478bd9Sstevel@tonic-gate 5867c478bd9Sstevel@tonic-gate /* 5877c478bd9Sstevel@tonic-gate * Determine if path can be pruned to produce an 5887c478bd9Sstevel@tonic-gate * OBP or devfs path for resolve_pathname. 5897c478bd9Sstevel@tonic-gate */ 5907c478bd9Sstevel@tonic-gate if (strncmp(path, "/devices/", 9) == 0) 5917c478bd9Sstevel@tonic-gate path += strlen("/devices"); 5927c478bd9Sstevel@tonic-gate 5937c478bd9Sstevel@tonic-gate /* 5947c478bd9Sstevel@tonic-gate * if no minor node was specified the DEFAULT minor node 5957c478bd9Sstevel@tonic-gate * will be returned. if there is no DEFAULT minor node 5967c478bd9Sstevel@tonic-gate * one will be fabricated of type S_IFCHR with the minor 5977c478bd9Sstevel@tonic-gate * number equal to the instance number. 5987c478bd9Sstevel@tonic-gate */ 5997c478bd9Sstevel@tonic-gate ret = resolve_pathname(path, &dip, &dev, &spec_type); 6007c478bd9Sstevel@tonic-gate if (ret != 0) 6017c478bd9Sstevel@tonic-gate return (ENODEV); 6027c478bd9Sstevel@tonic-gate 6037c478bd9Sstevel@tonic-gate ASSERT(STYP_VALID(spec_type)); 6047c478bd9Sstevel@tonic-gate vp = makespecvp(dev, STYP_TO_VTYP(spec_type)); 6057c478bd9Sstevel@tonic-gate spec_assoc_vp_with_devi(vp, dip); 6067c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 6077c478bd9Sstevel@tonic-gate } 6087c478bd9Sstevel@tonic-gate 6097c478bd9Sstevel@tonic-gate *vpp = vp; 6107c478bd9Sstevel@tonic-gate return (0); 6117c478bd9Sstevel@tonic-gate } 6127c478bd9Sstevel@tonic-gate 6137c478bd9Sstevel@tonic-gate static int 6147c478bd9Sstevel@tonic-gate ldi_devid_match(ddi_devid_t devid, dev_info_t *dip, dev_t dev) 6157c478bd9Sstevel@tonic-gate { 6167c478bd9Sstevel@tonic-gate char *devidstr; 6177c478bd9Sstevel@tonic-gate ddi_prop_t *propp; 6187c478bd9Sstevel@tonic-gate 6197c478bd9Sstevel@tonic-gate /* convert devid as a string property */ 6207c478bd9Sstevel@tonic-gate if ((devidstr = ddi_devid_str_encode(devid, NULL)) == NULL) 6217c478bd9Sstevel@tonic-gate return (0); 6227c478bd9Sstevel@tonic-gate 6237c478bd9Sstevel@tonic-gate /* 6247c478bd9Sstevel@tonic-gate * Search for the devid. For speed and ease in locking this 6257c478bd9Sstevel@tonic-gate * code directly uses the property implementation. See 6267c478bd9Sstevel@tonic-gate * ddi_common_devid_to_devlist() for a comment as to why. 6277c478bd9Sstevel@tonic-gate */ 6287c478bd9Sstevel@tonic-gate mutex_enter(&(DEVI(dip)->devi_lock)); 6297c478bd9Sstevel@tonic-gate 6307c478bd9Sstevel@tonic-gate /* check if there is a DDI_DEV_T_NONE devid property */ 6317c478bd9Sstevel@tonic-gate propp = i_ddi_prop_search(DDI_DEV_T_NONE, 6327c478bd9Sstevel@tonic-gate DEVID_PROP_NAME, DEVID_PROP_FLAGS, &DEVI(dip)->devi_hw_prop_ptr); 6337c478bd9Sstevel@tonic-gate if (propp != NULL) { 6347c478bd9Sstevel@tonic-gate if (ddi_devid_str_compare(propp->prop_val, devidstr) == 0) { 6357c478bd9Sstevel@tonic-gate /* a DDI_DEV_T_NONE devid exists and matchs */ 6367c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 6377c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 6387c478bd9Sstevel@tonic-gate return (1); 6397c478bd9Sstevel@tonic-gate } else { 6407c478bd9Sstevel@tonic-gate /* a DDI_DEV_T_NONE devid exists and doesn't match */ 6417c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 6427c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 6437c478bd9Sstevel@tonic-gate return (0); 6447c478bd9Sstevel@tonic-gate } 6457c478bd9Sstevel@tonic-gate } 6467c478bd9Sstevel@tonic-gate 6477c478bd9Sstevel@tonic-gate /* check if there is a devt specific devid property */ 6487c478bd9Sstevel@tonic-gate propp = i_ddi_prop_search(dev, 6497c478bd9Sstevel@tonic-gate DEVID_PROP_NAME, DEVID_PROP_FLAGS, &(DEVI(dip)->devi_hw_prop_ptr)); 6507c478bd9Sstevel@tonic-gate if (propp != NULL) { 6517c478bd9Sstevel@tonic-gate if (ddi_devid_str_compare(propp->prop_val, devidstr) == 0) { 6527c478bd9Sstevel@tonic-gate /* a devt specific devid exists and matchs */ 6537c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 6547c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 6557c478bd9Sstevel@tonic-gate return (1); 6567c478bd9Sstevel@tonic-gate } else { 6577c478bd9Sstevel@tonic-gate /* a devt specific devid exists and doesn't match */ 6587c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 6597c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 6607c478bd9Sstevel@tonic-gate return (0); 6617c478bd9Sstevel@tonic-gate } 6627c478bd9Sstevel@tonic-gate } 6637c478bd9Sstevel@tonic-gate 6647c478bd9Sstevel@tonic-gate /* we didn't find any devids associated with the device */ 6657c478bd9Sstevel@tonic-gate mutex_exit(&(DEVI(dip)->devi_lock)); 6667c478bd9Sstevel@tonic-gate ddi_devid_str_free(devidstr); 6677c478bd9Sstevel@tonic-gate return (0); 6687c478bd9Sstevel@tonic-gate } 6697c478bd9Sstevel@tonic-gate 6707c478bd9Sstevel@tonic-gate /* get a handle to a device by devid and minor name */ 671*dcba9f3fSGeorge Wilson int 6727c478bd9Sstevel@tonic-gate ldi_vp_from_devid(ddi_devid_t devid, char *minor_name, vnode_t **vpp) 6737c478bd9Sstevel@tonic-gate { 6747c478bd9Sstevel@tonic-gate dev_info_t *dip; 6757c478bd9Sstevel@tonic-gate vnode_t *vp; 6767c478bd9Sstevel@tonic-gate int ret, i, ndevs, styp; 6777c478bd9Sstevel@tonic-gate dev_t dev, *devs; 6787c478bd9Sstevel@tonic-gate 6797c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 6807c478bd9Sstevel@tonic-gate if ((devid == NULL) || (minor_name == NULL) || (vpp == NULL)) 6817c478bd9Sstevel@tonic-gate return (EINVAL); 6827c478bd9Sstevel@tonic-gate 6837c478bd9Sstevel@tonic-gate ret = ddi_lyr_devid_to_devlist(devid, minor_name, &ndevs, &devs); 6847c478bd9Sstevel@tonic-gate if ((ret != DDI_SUCCESS) || (ndevs <= 0)) 6857c478bd9Sstevel@tonic-gate return (ENODEV); 6867c478bd9Sstevel@tonic-gate 6877c478bd9Sstevel@tonic-gate for (i = 0; i < ndevs; i++) { 6887c478bd9Sstevel@tonic-gate dev = devs[i]; 6897c478bd9Sstevel@tonic-gate 6907c478bd9Sstevel@tonic-gate if ((dip = e_ddi_hold_devi_by_dev(dev, 0)) == NULL) 6917c478bd9Sstevel@tonic-gate continue; 6927c478bd9Sstevel@tonic-gate 6937c478bd9Sstevel@tonic-gate /* 6947c478bd9Sstevel@tonic-gate * now we have to verify that the devid of the disk 6957c478bd9Sstevel@tonic-gate * still matches what was requested. 6967c478bd9Sstevel@tonic-gate * 6977c478bd9Sstevel@tonic-gate * we have to do this because the devid could have 6987c478bd9Sstevel@tonic-gate * changed between the call to ddi_lyr_devid_to_devlist() 6997c478bd9Sstevel@tonic-gate * and e_ddi_hold_devi_by_dev(). this is because when 7007c478bd9Sstevel@tonic-gate * ddi_lyr_devid_to_devlist() returns a list of devts 7017c478bd9Sstevel@tonic-gate * there is no kind of hold on those devts so a device 7027c478bd9Sstevel@tonic-gate * could have been replaced out from under us in the 7037c478bd9Sstevel@tonic-gate * interim. 7047c478bd9Sstevel@tonic-gate */ 7057c478bd9Sstevel@tonic-gate if ((i_ddi_minorname_to_devtspectype(dip, minor_name, 7067c478bd9Sstevel@tonic-gate NULL, &styp) == DDI_SUCCESS) && 7077c478bd9Sstevel@tonic-gate ldi_devid_match(devid, dip, dev)) 7087c478bd9Sstevel@tonic-gate break; 7097c478bd9Sstevel@tonic-gate 7107c478bd9Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev() */ 7117c478bd9Sstevel@tonic-gate } 7127c478bd9Sstevel@tonic-gate 7137c478bd9Sstevel@tonic-gate ddi_lyr_free_devlist(devs, ndevs); 7147c478bd9Sstevel@tonic-gate 7157c478bd9Sstevel@tonic-gate if (i == ndevs) 7167c478bd9Sstevel@tonic-gate return (ENODEV); 7177c478bd9Sstevel@tonic-gate 7187c478bd9Sstevel@tonic-gate ASSERT(STYP_VALID(styp)); 7197c478bd9Sstevel@tonic-gate vp = makespecvp(dev, STYP_TO_VTYP(styp)); 7207c478bd9Sstevel@tonic-gate spec_assoc_vp_with_devi(vp, dip); 7217c478bd9Sstevel@tonic-gate ddi_release_devi(dip); /* from e_ddi_hold_devi_by_dev */ 7227c478bd9Sstevel@tonic-gate 7237c478bd9Sstevel@tonic-gate *vpp = vp; 7247c478bd9Sstevel@tonic-gate return (0); 7257c478bd9Sstevel@tonic-gate } 7267c478bd9Sstevel@tonic-gate 7277c478bd9Sstevel@tonic-gate /* given a vnode, open a device */ 7287c478bd9Sstevel@tonic-gate static int 7297c478bd9Sstevel@tonic-gate ldi_open_by_vp(vnode_t **vpp, int flag, cred_t *cr, 7307c478bd9Sstevel@tonic-gate ldi_handle_t *lhp, struct ldi_ident *li) 7317c478bd9Sstevel@tonic-gate { 7327c478bd9Sstevel@tonic-gate struct ldi_handle *nlhp; 7337c478bd9Sstevel@tonic-gate vnode_t *vp; 7347c478bd9Sstevel@tonic-gate int err; 7357c478bd9Sstevel@tonic-gate 7367c478bd9Sstevel@tonic-gate ASSERT((vpp != NULL) && (*vpp != NULL)); 7377c478bd9Sstevel@tonic-gate ASSERT((lhp != NULL) && (li != NULL)); 7387c478bd9Sstevel@tonic-gate 7397c478bd9Sstevel@tonic-gate vp = *vpp; 7407c478bd9Sstevel@tonic-gate /* if the vnode passed in is not a device, then bail */ 7417c478bd9Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops()) || !VTYP_VALID(vp->v_type)) 7427c478bd9Sstevel@tonic-gate return (ENXIO); 7437c478bd9Sstevel@tonic-gate 7447c478bd9Sstevel@tonic-gate /* 7457c478bd9Sstevel@tonic-gate * the caller may have specified a node that 7467c478bd9Sstevel@tonic-gate * doesn't have cb_ops defined. the ldi doesn't yet 7477c478bd9Sstevel@tonic-gate * support opening devices without a valid cb_ops. 7487c478bd9Sstevel@tonic-gate */ 7497c478bd9Sstevel@tonic-gate if (devopsp[getmajor(vp->v_rdev)]->devo_cb_ops == NULL) 7507c478bd9Sstevel@tonic-gate return (ENXIO); 7517c478bd9Sstevel@tonic-gate 7527c478bd9Sstevel@tonic-gate /* open the device */ 753da6c28aaSamw if ((err = VOP_OPEN(&vp, flag | FKLYR, cr, NULL)) != 0) 7547c478bd9Sstevel@tonic-gate return (err); 7557c478bd9Sstevel@tonic-gate 7567c478bd9Sstevel@tonic-gate /* possible clone open, make sure that we still have a spec node */ 7577c478bd9Sstevel@tonic-gate ASSERT(vn_matchops(vp, spec_getvnodeops())); 7587c478bd9Sstevel@tonic-gate 7597c478bd9Sstevel@tonic-gate nlhp = handle_alloc(vp, li); 7607c478bd9Sstevel@tonic-gate 7617c478bd9Sstevel@tonic-gate if (vp != *vpp) { 7627c478bd9Sstevel@tonic-gate /* 7637c478bd9Sstevel@tonic-gate * allocating the layered handle took a new hold on the vnode 7647c478bd9Sstevel@tonic-gate * so we can release the hold that was returned by the clone 7657c478bd9Sstevel@tonic-gate * open 7667c478bd9Sstevel@tonic-gate */ 7677c478bd9Sstevel@tonic-gate LDI_OPENCLOSE((CE_WARN, "%s: lh=0x%p", 768184cd04cScth "ldi clone open", (void *)nlhp)); 7697c478bd9Sstevel@tonic-gate } else { 7707c478bd9Sstevel@tonic-gate LDI_OPENCLOSE((CE_WARN, "%s: lh=0x%p", 771184cd04cScth "ldi open", (void *)nlhp)); 7727c478bd9Sstevel@tonic-gate } 7737c478bd9Sstevel@tonic-gate 7747c478bd9Sstevel@tonic-gate *vpp = vp; 7757c478bd9Sstevel@tonic-gate *lhp = (ldi_handle_t)nlhp; 7767c478bd9Sstevel@tonic-gate return (0); 7777c478bd9Sstevel@tonic-gate } 7787c478bd9Sstevel@tonic-gate 7797c478bd9Sstevel@tonic-gate /* Call a drivers prop_op(9E) interface */ 7807c478bd9Sstevel@tonic-gate static int 7817c478bd9Sstevel@tonic-gate i_ldi_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, 7827c478bd9Sstevel@tonic-gate int flags, char *name, caddr_t valuep, int *lengthp) 7837c478bd9Sstevel@tonic-gate { 7847c478bd9Sstevel@tonic-gate struct dev_ops *ops = NULL; 7857c478bd9Sstevel@tonic-gate int res; 7867c478bd9Sstevel@tonic-gate 7877c478bd9Sstevel@tonic-gate ASSERT((dip != NULL) && (name != NULL)); 7887c478bd9Sstevel@tonic-gate ASSERT((prop_op == PROP_LEN) || (valuep != NULL)); 7897c478bd9Sstevel@tonic-gate ASSERT(lengthp != NULL); 7907c478bd9Sstevel@tonic-gate 7917c478bd9Sstevel@tonic-gate /* 7927c478bd9Sstevel@tonic-gate * we can only be invoked after a driver has been opened and 7937c478bd9Sstevel@tonic-gate * someone has a layered handle to it, so there had better be 7947c478bd9Sstevel@tonic-gate * a valid ops vector. 7957c478bd9Sstevel@tonic-gate */ 7967c478bd9Sstevel@tonic-gate ops = DEVI(dip)->devi_ops; 7977c478bd9Sstevel@tonic-gate ASSERT(ops && ops->devo_cb_ops); 7987c478bd9Sstevel@tonic-gate 7997c478bd9Sstevel@tonic-gate /* 8007c478bd9Sstevel@tonic-gate * Some nexus drivers incorrectly set cb_prop_op to nodev, 8017c478bd9Sstevel@tonic-gate * nulldev or even NULL. 8027c478bd9Sstevel@tonic-gate */ 8037c478bd9Sstevel@tonic-gate if ((ops->devo_cb_ops->cb_prop_op == nodev) || 8047c478bd9Sstevel@tonic-gate (ops->devo_cb_ops->cb_prop_op == nulldev) || 8057c478bd9Sstevel@tonic-gate (ops->devo_cb_ops->cb_prop_op == NULL)) { 8067c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 8077c478bd9Sstevel@tonic-gate } 8087c478bd9Sstevel@tonic-gate 8097c478bd9Sstevel@tonic-gate /* check if this is actually DDI_DEV_T_ANY query */ 8107c478bd9Sstevel@tonic-gate if (flags & LDI_DEV_T_ANY) { 8117c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 8127c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 8137c478bd9Sstevel@tonic-gate } 8147c478bd9Sstevel@tonic-gate 8157c478bd9Sstevel@tonic-gate res = cdev_prop_op(dev, dip, prop_op, flags, name, valuep, lengthp); 8167c478bd9Sstevel@tonic-gate return (res); 8177c478bd9Sstevel@tonic-gate } 8187c478bd9Sstevel@tonic-gate 8197c478bd9Sstevel@tonic-gate static void 8207c478bd9Sstevel@tonic-gate i_ldi_prop_op_free(struct prop_driver_data *pdd) 8217c478bd9Sstevel@tonic-gate { 8227c478bd9Sstevel@tonic-gate kmem_free(pdd, pdd->pdd_size); 8237c478bd9Sstevel@tonic-gate } 8247c478bd9Sstevel@tonic-gate 8257c478bd9Sstevel@tonic-gate static caddr_t 8267c478bd9Sstevel@tonic-gate i_ldi_prop_op_alloc(int prop_len) 8277c478bd9Sstevel@tonic-gate { 8287c478bd9Sstevel@tonic-gate struct prop_driver_data *pdd; 8297c478bd9Sstevel@tonic-gate int pdd_size; 8307c478bd9Sstevel@tonic-gate 8317c478bd9Sstevel@tonic-gate pdd_size = sizeof (struct prop_driver_data) + prop_len; 8327c478bd9Sstevel@tonic-gate pdd = kmem_alloc(pdd_size, KM_SLEEP); 8337c478bd9Sstevel@tonic-gate pdd->pdd_size = pdd_size; 8347c478bd9Sstevel@tonic-gate pdd->pdd_prop_free = i_ldi_prop_op_free; 8357c478bd9Sstevel@tonic-gate return ((caddr_t)&pdd[1]); 8367c478bd9Sstevel@tonic-gate } 8377c478bd9Sstevel@tonic-gate 8387c478bd9Sstevel@tonic-gate /* 8397c478bd9Sstevel@tonic-gate * i_ldi_prop_op_typed() is a wrapper for i_ldi_prop_op that is used 8407c478bd9Sstevel@tonic-gate * by the typed ldi property lookup interfaces. 8417c478bd9Sstevel@tonic-gate */ 8427c478bd9Sstevel@tonic-gate static int 8437c478bd9Sstevel@tonic-gate i_ldi_prop_op_typed(dev_t dev, dev_info_t *dip, int flags, char *name, 8447c478bd9Sstevel@tonic-gate caddr_t *datap, int *lengthp, int elem_size) 8457c478bd9Sstevel@tonic-gate { 8467c478bd9Sstevel@tonic-gate caddr_t prop_val; 8477c478bd9Sstevel@tonic-gate int prop_len, res; 8487c478bd9Sstevel@tonic-gate 8497c478bd9Sstevel@tonic-gate ASSERT((dip != NULL) && (name != NULL)); 8507c478bd9Sstevel@tonic-gate ASSERT((datap != NULL) && (lengthp != NULL)); 8517c478bd9Sstevel@tonic-gate 8527c478bd9Sstevel@tonic-gate /* 8537c478bd9Sstevel@tonic-gate * first call the drivers prop_op() interface to allow it 8547c478bd9Sstevel@tonic-gate * it to override default property values. 8557c478bd9Sstevel@tonic-gate */ 8567c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN, 8577c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, NULL, &prop_len); 8587c478bd9Sstevel@tonic-gate if (res != DDI_PROP_SUCCESS) 8597c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 8607c478bd9Sstevel@tonic-gate 8617c478bd9Sstevel@tonic-gate /* sanity check the property length */ 8627c478bd9Sstevel@tonic-gate if (prop_len == 0) { 8637c478bd9Sstevel@tonic-gate /* 8647c478bd9Sstevel@tonic-gate * the ddi typed interfaces don't allow a drivers to 8657c478bd9Sstevel@tonic-gate * create properties with a length of 0. so we should 8667c478bd9Sstevel@tonic-gate * prevent drivers from returning 0 length dynamic 8677c478bd9Sstevel@tonic-gate * properties for typed property lookups. 8687c478bd9Sstevel@tonic-gate */ 8697c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 8707c478bd9Sstevel@tonic-gate } 8717c478bd9Sstevel@tonic-gate 8727c478bd9Sstevel@tonic-gate /* sanity check the property length against the element size */ 8737c478bd9Sstevel@tonic-gate if (elem_size && ((prop_len % elem_size) != 0)) 8747c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 8757c478bd9Sstevel@tonic-gate 8767c478bd9Sstevel@tonic-gate /* 8777c478bd9Sstevel@tonic-gate * got it. now allocate a prop_driver_data struct so that the 8787c478bd9Sstevel@tonic-gate * user can free the property via ddi_prop_free(). 8797c478bd9Sstevel@tonic-gate */ 8807c478bd9Sstevel@tonic-gate prop_val = i_ldi_prop_op_alloc(prop_len); 8817c478bd9Sstevel@tonic-gate 8827c478bd9Sstevel@tonic-gate /* lookup the property again, this time get the value */ 8837c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN_AND_VAL_BUF, 8847c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, prop_val, &prop_len); 8857c478bd9Sstevel@tonic-gate if (res != DDI_PROP_SUCCESS) { 8867c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 8877c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 8887c478bd9Sstevel@tonic-gate } 8897c478bd9Sstevel@tonic-gate 8907c478bd9Sstevel@tonic-gate /* sanity check the property length */ 8917c478bd9Sstevel@tonic-gate if (prop_len == 0) { 8927c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 8937c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 8947c478bd9Sstevel@tonic-gate } 8957c478bd9Sstevel@tonic-gate 8967c478bd9Sstevel@tonic-gate /* sanity check the property length against the element size */ 8977c478bd9Sstevel@tonic-gate if (elem_size && ((prop_len % elem_size) != 0)) { 8987c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 8997c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 9007c478bd9Sstevel@tonic-gate } 9017c478bd9Sstevel@tonic-gate 9027c478bd9Sstevel@tonic-gate /* 9037c478bd9Sstevel@tonic-gate * return the prop_driver_data struct and, optionally, the length 9047c478bd9Sstevel@tonic-gate * of the data. 9057c478bd9Sstevel@tonic-gate */ 9067c478bd9Sstevel@tonic-gate *datap = prop_val; 9077c478bd9Sstevel@tonic-gate *lengthp = prop_len; 9087c478bd9Sstevel@tonic-gate 9097c478bd9Sstevel@tonic-gate return (DDI_PROP_SUCCESS); 9107c478bd9Sstevel@tonic-gate } 9117c478bd9Sstevel@tonic-gate 9127c478bd9Sstevel@tonic-gate /* 9137c478bd9Sstevel@tonic-gate * i_check_string looks at a string property and makes sure its 9147c478bd9Sstevel@tonic-gate * a valid null terminated string 9157c478bd9Sstevel@tonic-gate */ 9167c478bd9Sstevel@tonic-gate static int 9177c478bd9Sstevel@tonic-gate i_check_string(char *str, int prop_len) 9187c478bd9Sstevel@tonic-gate { 9197c478bd9Sstevel@tonic-gate int i; 9207c478bd9Sstevel@tonic-gate 9217c478bd9Sstevel@tonic-gate ASSERT(str != NULL); 9227c478bd9Sstevel@tonic-gate 9237c478bd9Sstevel@tonic-gate for (i = 0; i < prop_len; i++) { 9247c478bd9Sstevel@tonic-gate if (str[i] == '\0') 9257c478bd9Sstevel@tonic-gate return (0); 9267c478bd9Sstevel@tonic-gate } 9277c478bd9Sstevel@tonic-gate return (1); 9287c478bd9Sstevel@tonic-gate } 9297c478bd9Sstevel@tonic-gate 9307c478bd9Sstevel@tonic-gate /* 9317c478bd9Sstevel@tonic-gate * i_pack_string_array takes a a string array property that is represented 932da6c28aaSamw * as a concatenation of strings (with the NULL character included for 9337c478bd9Sstevel@tonic-gate * each string) and converts it into a format that can be returned by 9347c478bd9Sstevel@tonic-gate * ldi_prop_lookup_string_array. 9357c478bd9Sstevel@tonic-gate */ 9367c478bd9Sstevel@tonic-gate static int 9377c478bd9Sstevel@tonic-gate i_pack_string_array(char *str_concat, int prop_len, 9387c478bd9Sstevel@tonic-gate char ***str_arrayp, int *nelemp) 9397c478bd9Sstevel@tonic-gate { 9407c478bd9Sstevel@tonic-gate int i, nelem, pack_size; 9417c478bd9Sstevel@tonic-gate char **str_array, *strptr; 9427c478bd9Sstevel@tonic-gate 9437c478bd9Sstevel@tonic-gate /* 9447c478bd9Sstevel@tonic-gate * first we need to sanity check the input string array. 9457c478bd9Sstevel@tonic-gate * in essence this can be done my making sure that the last 9467c478bd9Sstevel@tonic-gate * character of the array passed in is null. (meaning the last 9477c478bd9Sstevel@tonic-gate * string in the array is NULL terminated. 9487c478bd9Sstevel@tonic-gate */ 9497c478bd9Sstevel@tonic-gate if (str_concat[prop_len - 1] != '\0') 9507c478bd9Sstevel@tonic-gate return (1); 9517c478bd9Sstevel@tonic-gate 9527c478bd9Sstevel@tonic-gate /* now let's count the number of strings in the array */ 9537c478bd9Sstevel@tonic-gate for (nelem = i = 0; i < prop_len; i++) 9547c478bd9Sstevel@tonic-gate if (str_concat[i] == '\0') 9557c478bd9Sstevel@tonic-gate nelem++; 9567c478bd9Sstevel@tonic-gate ASSERT(nelem >= 1); 9577c478bd9Sstevel@tonic-gate 9587c478bd9Sstevel@tonic-gate /* now let's allocate memory for the new packed property */ 9597c478bd9Sstevel@tonic-gate pack_size = (sizeof (char *) * (nelem + 1)) + prop_len; 9607c478bd9Sstevel@tonic-gate str_array = (char **)i_ldi_prop_op_alloc(pack_size); 9617c478bd9Sstevel@tonic-gate 9627c478bd9Sstevel@tonic-gate /* let's copy the actual string data into the new property */ 9637c478bd9Sstevel@tonic-gate strptr = (char *)&(str_array[nelem + 1]); 9647c478bd9Sstevel@tonic-gate bcopy(str_concat, strptr, prop_len); 9657c478bd9Sstevel@tonic-gate 9667c478bd9Sstevel@tonic-gate /* now initialize the string array pointers */ 9677c478bd9Sstevel@tonic-gate for (i = 0; i < nelem; i++) { 9687c478bd9Sstevel@tonic-gate str_array[i] = strptr; 9697c478bd9Sstevel@tonic-gate strptr += strlen(strptr) + 1; 9707c478bd9Sstevel@tonic-gate } 9717c478bd9Sstevel@tonic-gate str_array[nelem] = NULL; 9727c478bd9Sstevel@tonic-gate 9737c478bd9Sstevel@tonic-gate /* set the return values */ 9747c478bd9Sstevel@tonic-gate *str_arrayp = str_array; 9757c478bd9Sstevel@tonic-gate *nelemp = nelem; 9767c478bd9Sstevel@tonic-gate 9777c478bd9Sstevel@tonic-gate return (0); 9787c478bd9Sstevel@tonic-gate } 9797c478bd9Sstevel@tonic-gate 9807c478bd9Sstevel@tonic-gate 9817c478bd9Sstevel@tonic-gate /* 9827c478bd9Sstevel@tonic-gate * LDI Project private device usage interfaces 9837c478bd9Sstevel@tonic-gate */ 9847c478bd9Sstevel@tonic-gate 9857c478bd9Sstevel@tonic-gate /* 9867c478bd9Sstevel@tonic-gate * Get a count of how many devices are currentl open by different consumers 9877c478bd9Sstevel@tonic-gate */ 9887c478bd9Sstevel@tonic-gate int 9897c478bd9Sstevel@tonic-gate ldi_usage_count() 9907c478bd9Sstevel@tonic-gate { 9917c478bd9Sstevel@tonic-gate return (ldi_handle_hash_count); 9927c478bd9Sstevel@tonic-gate } 9937c478bd9Sstevel@tonic-gate 9947c478bd9Sstevel@tonic-gate static void 9957c478bd9Sstevel@tonic-gate ldi_usage_walker_tgt_helper(ldi_usage_t *ldi_usage, vnode_t *vp) 9967c478bd9Sstevel@tonic-gate { 9977c478bd9Sstevel@tonic-gate dev_info_t *dip; 9987c478bd9Sstevel@tonic-gate dev_t dev; 9997c478bd9Sstevel@tonic-gate 10007c478bd9Sstevel@tonic-gate ASSERT(STYP_VALID(VTYP_TO_STYP(vp->v_type))); 10017c478bd9Sstevel@tonic-gate 10027c478bd9Sstevel@tonic-gate /* get the target devt */ 10037c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 10047c478bd9Sstevel@tonic-gate 10057c478bd9Sstevel@tonic-gate /* try to get the target dip */ 10067c478bd9Sstevel@tonic-gate dip = VTOCS(vp)->s_dip; 10077c478bd9Sstevel@tonic-gate if (dip != NULL) { 10087c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 10097c478bd9Sstevel@tonic-gate } else if (dev != DDI_DEV_T_NONE) { 10107c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 10117c478bd9Sstevel@tonic-gate } 10127c478bd9Sstevel@tonic-gate 10137c478bd9Sstevel@tonic-gate /* set the target information */ 10147c478bd9Sstevel@tonic-gate ldi_usage->tgt_name = mod_major_to_name(getmajor(dev)); 10157c478bd9Sstevel@tonic-gate ldi_usage->tgt_modid = mod_name_to_modid(ldi_usage->tgt_name); 10167c478bd9Sstevel@tonic-gate ldi_usage->tgt_devt = dev; 10177c478bd9Sstevel@tonic-gate ldi_usage->tgt_spec_type = VTYP_TO_STYP(vp->v_type); 10187c478bd9Sstevel@tonic-gate ldi_usage->tgt_dip = dip; 10197c478bd9Sstevel@tonic-gate } 10207c478bd9Sstevel@tonic-gate 10217c478bd9Sstevel@tonic-gate 10227c478bd9Sstevel@tonic-gate static int 10237c478bd9Sstevel@tonic-gate ldi_usage_walker_helper(struct ldi_ident *lip, vnode_t *vp, 10247c478bd9Sstevel@tonic-gate void *arg, int (*callback)(const ldi_usage_t *, void *)) 10257c478bd9Sstevel@tonic-gate { 10267c478bd9Sstevel@tonic-gate ldi_usage_t ldi_usage; 10277c478bd9Sstevel@tonic-gate struct devnames *dnp; 10287c478bd9Sstevel@tonic-gate dev_info_t *dip; 10297c478bd9Sstevel@tonic-gate major_t major; 10307c478bd9Sstevel@tonic-gate dev_t dev; 10317c478bd9Sstevel@tonic-gate int ret = LDI_USAGE_CONTINUE; 10327c478bd9Sstevel@tonic-gate 10337c478bd9Sstevel@tonic-gate /* set the target device information */ 10347c478bd9Sstevel@tonic-gate ldi_usage_walker_tgt_helper(&ldi_usage, vp); 10357c478bd9Sstevel@tonic-gate 10367c478bd9Sstevel@tonic-gate /* get the source devt */ 10377c478bd9Sstevel@tonic-gate dev = lip->li_dev; 10387c478bd9Sstevel@tonic-gate 10397c478bd9Sstevel@tonic-gate /* try to get the source dip */ 10407c478bd9Sstevel@tonic-gate dip = lip->li_dip; 10417c478bd9Sstevel@tonic-gate if (dip != NULL) { 10427c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 10437c478bd9Sstevel@tonic-gate } else if (dev != DDI_DEV_T_NONE) { 10447c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 10457c478bd9Sstevel@tonic-gate } 10467c478bd9Sstevel@tonic-gate 10477c478bd9Sstevel@tonic-gate /* set the valid source information */ 10487c478bd9Sstevel@tonic-gate ldi_usage.src_modid = lip->li_modid; 10497c478bd9Sstevel@tonic-gate ldi_usage.src_name = lip->li_modname; 10507c478bd9Sstevel@tonic-gate ldi_usage.src_devt = dev; 10517c478bd9Sstevel@tonic-gate ldi_usage.src_dip = dip; 10527c478bd9Sstevel@tonic-gate 10537c478bd9Sstevel@tonic-gate /* 10547c478bd9Sstevel@tonic-gate * if the source ident represents either: 10557c478bd9Sstevel@tonic-gate * 10567c478bd9Sstevel@tonic-gate * - a kernel module (and not a device or device driver) 10577c478bd9Sstevel@tonic-gate * - a device node 10587c478bd9Sstevel@tonic-gate * 10597c478bd9Sstevel@tonic-gate * then we currently have all the info we need to report the 10607c478bd9Sstevel@tonic-gate * usage information so invoke the callback function. 10617c478bd9Sstevel@tonic-gate */ 10627c478bd9Sstevel@tonic-gate if (((lip->li_major == -1) && (dev == DDI_DEV_T_NONE)) || 10637c478bd9Sstevel@tonic-gate (dip != NULL)) { 10647c478bd9Sstevel@tonic-gate ret = callback(&ldi_usage, arg); 10657c478bd9Sstevel@tonic-gate if (dip != NULL) 10667c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 10677c478bd9Sstevel@tonic-gate if (ldi_usage.tgt_dip != NULL) 10687c478bd9Sstevel@tonic-gate ddi_release_devi(ldi_usage.tgt_dip); 10697c478bd9Sstevel@tonic-gate return (ret); 10707c478bd9Sstevel@tonic-gate } 10717c478bd9Sstevel@tonic-gate 10727c478bd9Sstevel@tonic-gate /* 10737c478bd9Sstevel@tonic-gate * now this is kinda gross. 10747c478bd9Sstevel@tonic-gate * 10757c478bd9Sstevel@tonic-gate * what we do here is attempt to associate every device instance 10767c478bd9Sstevel@tonic-gate * of the source driver on the system with the open target driver. 10777c478bd9Sstevel@tonic-gate * we do this because we don't know which instance of the device 10787c478bd9Sstevel@tonic-gate * could potentially access the lower device so we assume that all 10797c478bd9Sstevel@tonic-gate * the instances could access it. 10807c478bd9Sstevel@tonic-gate * 10817c478bd9Sstevel@tonic-gate * there are two ways we could have gotten here: 10827c478bd9Sstevel@tonic-gate * 10837c478bd9Sstevel@tonic-gate * 1) this layered ident represents one created using only a 10847c478bd9Sstevel@tonic-gate * major number or a driver module name. this means that when 10857c478bd9Sstevel@tonic-gate * it was created we could not associate it with a particular 10867c478bd9Sstevel@tonic-gate * dev_t or device instance. 10877c478bd9Sstevel@tonic-gate * 10887c478bd9Sstevel@tonic-gate * when could this possibly happen you ask? 10897c478bd9Sstevel@tonic-gate * 10907c478bd9Sstevel@tonic-gate * a perfect example of this is streams persistent links. 10917c478bd9Sstevel@tonic-gate * when a persistant streams link is formed we can't associate 10927c478bd9Sstevel@tonic-gate * the lower device stream with any particular upper device 10937c478bd9Sstevel@tonic-gate * stream or instance. this is because any particular upper 10947c478bd9Sstevel@tonic-gate * device stream could be closed, then another could be 10957c478bd9Sstevel@tonic-gate * opened with a different dev_t and device instance, and it 10967c478bd9Sstevel@tonic-gate * would still have access to the lower linked stream. 10977c478bd9Sstevel@tonic-gate * 10987c478bd9Sstevel@tonic-gate * since any instance of the upper streams driver could 10997c478bd9Sstevel@tonic-gate * potentially access the lower stream whenever it wants, 11007c478bd9Sstevel@tonic-gate * we represent that here by associating the opened lower 11017c478bd9Sstevel@tonic-gate * device with every existing device instance of the upper 11027c478bd9Sstevel@tonic-gate * streams driver. 11037c478bd9Sstevel@tonic-gate * 11047c478bd9Sstevel@tonic-gate * 2) This case should really never happen but we'll include it 11057c478bd9Sstevel@tonic-gate * for completeness. 11067c478bd9Sstevel@tonic-gate * 11077c478bd9Sstevel@tonic-gate * it's possible that we could have gotten here because we 11087c478bd9Sstevel@tonic-gate * have a dev_t for the upper device but we couldn't find a 11097c478bd9Sstevel@tonic-gate * dip associated with that dev_t. 11107c478bd9Sstevel@tonic-gate * 11117c478bd9Sstevel@tonic-gate * the only types of devices that have dev_t without an 11127c478bd9Sstevel@tonic-gate * associated dip are unbound DLPIv2 network devices. These 11137c478bd9Sstevel@tonic-gate * types of devices exist to be able to attach a stream to any 11147c478bd9Sstevel@tonic-gate * instance of a hardware network device. since these types of 11157c478bd9Sstevel@tonic-gate * devices are usually hardware devices they should never 11167c478bd9Sstevel@tonic-gate * really have other devices open. 11177c478bd9Sstevel@tonic-gate */ 11187c478bd9Sstevel@tonic-gate if (dev != DDI_DEV_T_NONE) 11197c478bd9Sstevel@tonic-gate major = getmajor(dev); 11207c478bd9Sstevel@tonic-gate else 11217c478bd9Sstevel@tonic-gate major = lip->li_major; 11227c478bd9Sstevel@tonic-gate 11237c478bd9Sstevel@tonic-gate ASSERT((major >= 0) && (major < devcnt)); 11247c478bd9Sstevel@tonic-gate 11257c478bd9Sstevel@tonic-gate dnp = &devnamesp[major]; 11267c478bd9Sstevel@tonic-gate LOCK_DEV_OPS(&dnp->dn_lock); 11277c478bd9Sstevel@tonic-gate dip = dnp->dn_head; 11287c478bd9Sstevel@tonic-gate while ((dip) && (ret == LDI_USAGE_CONTINUE)) { 11297c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 11307c478bd9Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock); 11317c478bd9Sstevel@tonic-gate 11327c478bd9Sstevel@tonic-gate /* set the source dip */ 11337c478bd9Sstevel@tonic-gate ldi_usage.src_dip = dip; 11347c478bd9Sstevel@tonic-gate 11357c478bd9Sstevel@tonic-gate /* invoke the callback function */ 11367c478bd9Sstevel@tonic-gate ret = callback(&ldi_usage, arg); 11377c478bd9Sstevel@tonic-gate 11387c478bd9Sstevel@tonic-gate LOCK_DEV_OPS(&dnp->dn_lock); 11397c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 11407c478bd9Sstevel@tonic-gate dip = ddi_get_next(dip); 11417c478bd9Sstevel@tonic-gate } 11427c478bd9Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock); 11437c478bd9Sstevel@tonic-gate 11447c478bd9Sstevel@tonic-gate /* if there was a target dip, release it */ 11457c478bd9Sstevel@tonic-gate if (ldi_usage.tgt_dip != NULL) 11467c478bd9Sstevel@tonic-gate ddi_release_devi(ldi_usage.tgt_dip); 11477c478bd9Sstevel@tonic-gate 11487c478bd9Sstevel@tonic-gate return (ret); 11497c478bd9Sstevel@tonic-gate } 11507c478bd9Sstevel@tonic-gate 11517c478bd9Sstevel@tonic-gate /* 11527c478bd9Sstevel@tonic-gate * ldi_usage_walker() - this walker reports LDI kernel device usage 11537c478bd9Sstevel@tonic-gate * information via the callback() callback function. the LDI keeps track 11547c478bd9Sstevel@tonic-gate * of what devices are being accessed in its own internal data structures. 11557c478bd9Sstevel@tonic-gate * this function walks those data structures to determine device usage. 11567c478bd9Sstevel@tonic-gate */ 11577c478bd9Sstevel@tonic-gate void 11587c478bd9Sstevel@tonic-gate ldi_usage_walker(void *arg, int (*callback)(const ldi_usage_t *, void *)) 11597c478bd9Sstevel@tonic-gate { 11607c478bd9Sstevel@tonic-gate struct ldi_handle *lhp; 11617c478bd9Sstevel@tonic-gate struct ldi_ident *lip; 11627c478bd9Sstevel@tonic-gate vnode_t *vp; 11637c478bd9Sstevel@tonic-gate int i; 11647c478bd9Sstevel@tonic-gate int ret = LDI_USAGE_CONTINUE; 11657c478bd9Sstevel@tonic-gate 11667c478bd9Sstevel@tonic-gate for (i = 0; i < LH_HASH_SZ; i++) { 11677c478bd9Sstevel@tonic-gate mutex_enter(&ldi_handle_hash_lock[i]); 11687c478bd9Sstevel@tonic-gate 11697c478bd9Sstevel@tonic-gate lhp = ldi_handle_hash[i]; 11707c478bd9Sstevel@tonic-gate while ((lhp != NULL) && (ret == LDI_USAGE_CONTINUE)) { 11717c478bd9Sstevel@tonic-gate lip = lhp->lh_ident; 11727c478bd9Sstevel@tonic-gate vp = lhp->lh_vp; 11737c478bd9Sstevel@tonic-gate 11747c478bd9Sstevel@tonic-gate /* invoke the devinfo callback function */ 11757c478bd9Sstevel@tonic-gate ret = ldi_usage_walker_helper(lip, vp, arg, callback); 11767c478bd9Sstevel@tonic-gate 11777c478bd9Sstevel@tonic-gate lhp = lhp->lh_next; 11787c478bd9Sstevel@tonic-gate } 11797c478bd9Sstevel@tonic-gate mutex_exit(&ldi_handle_hash_lock[i]); 11807c478bd9Sstevel@tonic-gate 11817c478bd9Sstevel@tonic-gate if (ret != LDI_USAGE_CONTINUE) 11827c478bd9Sstevel@tonic-gate break; 11837c478bd9Sstevel@tonic-gate } 11847c478bd9Sstevel@tonic-gate } 11857c478bd9Sstevel@tonic-gate 11867c478bd9Sstevel@tonic-gate /* 11877c478bd9Sstevel@tonic-gate * LDI Project private interfaces (streams linking interfaces) 11887c478bd9Sstevel@tonic-gate * 11897c478bd9Sstevel@tonic-gate * Streams supports a type of built in device layering via linking. 11907c478bd9Sstevel@tonic-gate * Certain types of streams drivers can be streams multiplexors. 11917c478bd9Sstevel@tonic-gate * A streams multiplexor supports the I_LINK/I_PLINK operation. 11927c478bd9Sstevel@tonic-gate * These operations allows other streams devices to be linked under the 11937c478bd9Sstevel@tonic-gate * multiplexor. By definition all streams multiplexors are devices 11947c478bd9Sstevel@tonic-gate * so this linking is a type of device layering where the multiplexor 11957c478bd9Sstevel@tonic-gate * device is layered on top of the device linked below it. 11967c478bd9Sstevel@tonic-gate */ 11977c478bd9Sstevel@tonic-gate 11987c478bd9Sstevel@tonic-gate /* 11997c478bd9Sstevel@tonic-gate * ldi_mlink_lh() is invoked when streams are linked using LDI handles. 12007c478bd9Sstevel@tonic-gate * It is not used for normal I_LINKs and I_PLINKs using file descriptors. 12017c478bd9Sstevel@tonic-gate * 12027c478bd9Sstevel@tonic-gate * The streams framework keeps track of links via the file_t of the lower 12037c478bd9Sstevel@tonic-gate * stream. The LDI keeps track of devices using a vnode. In the case 12047c478bd9Sstevel@tonic-gate * of a streams link created via an LDI handle, fnk_lh() allocates 12057c478bd9Sstevel@tonic-gate * a file_t that the streams framework can use to track the linkage. 12067c478bd9Sstevel@tonic-gate */ 12077c478bd9Sstevel@tonic-gate int 12087c478bd9Sstevel@tonic-gate ldi_mlink_lh(vnode_t *vp, int cmd, intptr_t arg, cred_t *crp, int *rvalp) 12097c478bd9Sstevel@tonic-gate { 12107c478bd9Sstevel@tonic-gate struct ldi_handle *lhp = (struct ldi_handle *)arg; 12117c478bd9Sstevel@tonic-gate vnode_t *vpdown; 12127c478bd9Sstevel@tonic-gate file_t *fpdown; 12137c478bd9Sstevel@tonic-gate int err; 12147c478bd9Sstevel@tonic-gate 12157c478bd9Sstevel@tonic-gate if (lhp == NULL) 12167c478bd9Sstevel@tonic-gate return (EINVAL); 12177c478bd9Sstevel@tonic-gate 12187c478bd9Sstevel@tonic-gate vpdown = lhp->lh_vp; 12197c478bd9Sstevel@tonic-gate ASSERT(vn_matchops(vpdown, spec_getvnodeops())); 12207c478bd9Sstevel@tonic-gate ASSERT(cmd == _I_PLINK_LH); 12217c478bd9Sstevel@tonic-gate 12227c478bd9Sstevel@tonic-gate /* 12237c478bd9Sstevel@tonic-gate * create a new lower vnode and a file_t that points to it, 12247c478bd9Sstevel@tonic-gate * streams linking requires a file_t. falloc() returns with 12257c478bd9Sstevel@tonic-gate * fpdown locked. 12267c478bd9Sstevel@tonic-gate */ 12277c478bd9Sstevel@tonic-gate VN_HOLD(vpdown); 12287c478bd9Sstevel@tonic-gate (void) falloc(vpdown, FREAD|FWRITE, &fpdown, NULL); 12297c478bd9Sstevel@tonic-gate mutex_exit(&fpdown->f_tlock); 12307c478bd9Sstevel@tonic-gate 12317c478bd9Sstevel@tonic-gate /* try to establish the link */ 12327c478bd9Sstevel@tonic-gate err = mlink_file(vp, I_PLINK, fpdown, crp, rvalp, 1); 12337c478bd9Sstevel@tonic-gate 12347c478bd9Sstevel@tonic-gate if (err != 0) { 12357c478bd9Sstevel@tonic-gate /* the link failed, free the file_t and release the vnode */ 12367c478bd9Sstevel@tonic-gate mutex_enter(&fpdown->f_tlock); 12377c478bd9Sstevel@tonic-gate unfalloc(fpdown); 12387c478bd9Sstevel@tonic-gate VN_RELE(vpdown); 12397c478bd9Sstevel@tonic-gate } 12407c478bd9Sstevel@tonic-gate 12417c478bd9Sstevel@tonic-gate return (err); 12427c478bd9Sstevel@tonic-gate } 12437c478bd9Sstevel@tonic-gate 12447c478bd9Sstevel@tonic-gate /* 1245da6c28aaSamw * ldi_mlink_fp() is invoked for all successful streams linkages created 12467c478bd9Sstevel@tonic-gate * via I_LINK and I_PLINK. ldi_mlink_fp() records the linkage information 12477c478bd9Sstevel@tonic-gate * in its internal state so that the devinfo snapshot code has some 12487c478bd9Sstevel@tonic-gate * observability into streams device linkage information. 12497c478bd9Sstevel@tonic-gate */ 12507c478bd9Sstevel@tonic-gate void 12517c478bd9Sstevel@tonic-gate ldi_mlink_fp(struct stdata *stp, file_t *fpdown, int lhlink, int type) 12527c478bd9Sstevel@tonic-gate { 12537c478bd9Sstevel@tonic-gate vnode_t *vp = fpdown->f_vnode; 12547c478bd9Sstevel@tonic-gate struct snode *sp, *csp; 12557c478bd9Sstevel@tonic-gate ldi_ident_t li; 12567c478bd9Sstevel@tonic-gate major_t major; 12577c478bd9Sstevel@tonic-gate int ret; 12587c478bd9Sstevel@tonic-gate 12597c478bd9Sstevel@tonic-gate /* if the lower stream is not a device then return */ 12607c478bd9Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops())) 12617c478bd9Sstevel@tonic-gate return; 12627c478bd9Sstevel@tonic-gate 12637c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 12647c478bd9Sstevel@tonic-gate 12657c478bd9Sstevel@tonic-gate LDI_STREAMS_LNK((CE_NOTE, "%s: linking streams " 1266184cd04cScth "stp=0x%p, fpdown=0x%p", "ldi_mlink_fp", 1267184cd04cScth (void *)stp, (void *)fpdown)); 12687c478bd9Sstevel@tonic-gate 12697c478bd9Sstevel@tonic-gate sp = VTOS(vp); 12707c478bd9Sstevel@tonic-gate csp = VTOS(sp->s_commonvp); 12717c478bd9Sstevel@tonic-gate 12727c478bd9Sstevel@tonic-gate /* check if this was a plink via a layered handle */ 12737c478bd9Sstevel@tonic-gate if (lhlink) { 12747c478bd9Sstevel@tonic-gate /* 12757c478bd9Sstevel@tonic-gate * increment the common snode s_count. 12767c478bd9Sstevel@tonic-gate * 12777c478bd9Sstevel@tonic-gate * this is done because after the link operation there 12787c478bd9Sstevel@tonic-gate * are two ways that s_count can be decremented. 12797c478bd9Sstevel@tonic-gate * 12807c478bd9Sstevel@tonic-gate * when the layered handle used to create the link is 12817c478bd9Sstevel@tonic-gate * closed, spec_close() is called and it will decrement 12827c478bd9Sstevel@tonic-gate * s_count in the common snode. if we don't increment 12837c478bd9Sstevel@tonic-gate * s_count here then this could cause spec_close() to 12847c478bd9Sstevel@tonic-gate * actually close the device while it's still linked 12857c478bd9Sstevel@tonic-gate * under a multiplexer. 12867c478bd9Sstevel@tonic-gate * 12877c478bd9Sstevel@tonic-gate * also, when the lower stream is unlinked, closef() is 12887c478bd9Sstevel@tonic-gate * called for the file_t associated with this snode. 12897c478bd9Sstevel@tonic-gate * closef() will call spec_close(), which will decrement 12907c478bd9Sstevel@tonic-gate * s_count. if we dont't increment s_count here then this 12917c478bd9Sstevel@tonic-gate * could cause spec_close() to actually close the device 12927c478bd9Sstevel@tonic-gate * while there may still be valid layered handles 12937c478bd9Sstevel@tonic-gate * pointing to it. 12947c478bd9Sstevel@tonic-gate */ 12957c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 12967c478bd9Sstevel@tonic-gate ASSERT(csp->s_count >= 1); 12977c478bd9Sstevel@tonic-gate csp->s_count++; 12987c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 12997c478bd9Sstevel@tonic-gate 13007c478bd9Sstevel@tonic-gate /* 13017c478bd9Sstevel@tonic-gate * decrement the f_count. 13027c478bd9Sstevel@tonic-gate * this is done because the layered driver framework does 13037c478bd9Sstevel@tonic-gate * not actually cache a copy of the file_t allocated to 13047c478bd9Sstevel@tonic-gate * do the link. this is done here instead of in ldi_mlink_lh() 13057c478bd9Sstevel@tonic-gate * because there is a window in ldi_mlink_lh() between where 13067c478bd9Sstevel@tonic-gate * milnk_file() returns and we would decrement the f_count 13077c478bd9Sstevel@tonic-gate * when the stream could be unlinked. 13087c478bd9Sstevel@tonic-gate */ 13097c478bd9Sstevel@tonic-gate mutex_enter(&fpdown->f_tlock); 13107c478bd9Sstevel@tonic-gate fpdown->f_count--; 13117c478bd9Sstevel@tonic-gate mutex_exit(&fpdown->f_tlock); 13127c478bd9Sstevel@tonic-gate } 13137c478bd9Sstevel@tonic-gate 13147c478bd9Sstevel@tonic-gate /* 13157c478bd9Sstevel@tonic-gate * NOTE: here we rely on the streams subsystem not allowing 13167c478bd9Sstevel@tonic-gate * a stream to be multiplexed more than once. if this 13177c478bd9Sstevel@tonic-gate * changes, we break. 13187c478bd9Sstevel@tonic-gate * 13197c478bd9Sstevel@tonic-gate * mark the snode/stream as multiplexed 13207c478bd9Sstevel@tonic-gate */ 13217c478bd9Sstevel@tonic-gate mutex_enter(&sp->s_lock); 13227c478bd9Sstevel@tonic-gate ASSERT(!(sp->s_flag & SMUXED)); 13237c478bd9Sstevel@tonic-gate sp->s_flag |= SMUXED; 13247c478bd9Sstevel@tonic-gate mutex_exit(&sp->s_lock); 13257c478bd9Sstevel@tonic-gate 13267c478bd9Sstevel@tonic-gate /* get a layered ident for the upper stream */ 13277c478bd9Sstevel@tonic-gate if (type == LINKNORMAL) { 13287c478bd9Sstevel@tonic-gate /* 13297c478bd9Sstevel@tonic-gate * if the link is not persistant then we can associate 13307c478bd9Sstevel@tonic-gate * the upper stream with a dev_t. this is because the 13317c478bd9Sstevel@tonic-gate * upper stream is associated with a vnode, which is 13327c478bd9Sstevel@tonic-gate * associated with a dev_t and this binding can't change 13337c478bd9Sstevel@tonic-gate * during the life of the stream. since the link isn't 13347c478bd9Sstevel@tonic-gate * persistant once the stream is destroyed the link is 13357c478bd9Sstevel@tonic-gate * destroyed. so the dev_t will be valid for the life 13367c478bd9Sstevel@tonic-gate * of the link. 13377c478bd9Sstevel@tonic-gate */ 13387c478bd9Sstevel@tonic-gate ret = ldi_ident_from_stream(getendq(stp->sd_wrq), &li); 13397c478bd9Sstevel@tonic-gate } else { 13407c478bd9Sstevel@tonic-gate /* 13417c478bd9Sstevel@tonic-gate * if the link is persistant we can only associate the 13427c478bd9Sstevel@tonic-gate * link with a driver (and not a dev_t.) this is 13437c478bd9Sstevel@tonic-gate * because subsequent opens of the upper device may result 13447c478bd9Sstevel@tonic-gate * in a different stream (and dev_t) having access to 13457c478bd9Sstevel@tonic-gate * the lower stream. 13467c478bd9Sstevel@tonic-gate * 13477c478bd9Sstevel@tonic-gate * for example, if the upper stream is closed after the 13487c478bd9Sstevel@tonic-gate * persistant link operation is compleated, a subsequent 13497c478bd9Sstevel@tonic-gate * open of the upper device will create a new stream which 13507c478bd9Sstevel@tonic-gate * may have a different dev_t and an unlink operation 13517c478bd9Sstevel@tonic-gate * can be performed using this new upper stream. 13527c478bd9Sstevel@tonic-gate */ 13537c478bd9Sstevel@tonic-gate ASSERT(type == LINKPERSIST); 13547c478bd9Sstevel@tonic-gate major = getmajor(stp->sd_vnode->v_rdev); 13557c478bd9Sstevel@tonic-gate ret = ldi_ident_from_major(major, &li); 13567c478bd9Sstevel@tonic-gate } 13577c478bd9Sstevel@tonic-gate 13587c478bd9Sstevel@tonic-gate ASSERT(ret == 0); 13597c478bd9Sstevel@tonic-gate (void) handle_alloc(vp, (struct ldi_ident *)li); 13607c478bd9Sstevel@tonic-gate ldi_ident_release(li); 13617c478bd9Sstevel@tonic-gate } 13627c478bd9Sstevel@tonic-gate 13637c478bd9Sstevel@tonic-gate void 13647c478bd9Sstevel@tonic-gate ldi_munlink_fp(struct stdata *stp, file_t *fpdown, int type) 13657c478bd9Sstevel@tonic-gate { 13667c478bd9Sstevel@tonic-gate struct ldi_handle *lhp; 13677c478bd9Sstevel@tonic-gate vnode_t *vp = (vnode_t *)fpdown->f_vnode; 13687c478bd9Sstevel@tonic-gate struct snode *sp; 13697c478bd9Sstevel@tonic-gate ldi_ident_t li; 13707c478bd9Sstevel@tonic-gate major_t major; 13717c478bd9Sstevel@tonic-gate int ret; 13727c478bd9Sstevel@tonic-gate 13737c478bd9Sstevel@tonic-gate /* if the lower stream is not a device then return */ 13747c478bd9Sstevel@tonic-gate if (!vn_matchops(vp, spec_getvnodeops())) 13757c478bd9Sstevel@tonic-gate return; 13767c478bd9Sstevel@tonic-gate 13777c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 13787c478bd9Sstevel@tonic-gate ASSERT((type == LINKNORMAL) || (type == LINKPERSIST)); 13797c478bd9Sstevel@tonic-gate 13807c478bd9Sstevel@tonic-gate LDI_STREAMS_LNK((CE_NOTE, "%s: unlinking streams " 1381184cd04cScth "stp=0x%p, fpdown=0x%p", "ldi_munlink_fp", 1382184cd04cScth (void *)stp, (void *)fpdown)); 13837c478bd9Sstevel@tonic-gate 13847c478bd9Sstevel@tonic-gate /* 13857c478bd9Sstevel@tonic-gate * NOTE: here we rely on the streams subsystem not allowing 13867c478bd9Sstevel@tonic-gate * a stream to be multiplexed more than once. if this 13877c478bd9Sstevel@tonic-gate * changes, we break. 13887c478bd9Sstevel@tonic-gate * 13897c478bd9Sstevel@tonic-gate * mark the snode/stream as not multiplexed 13907c478bd9Sstevel@tonic-gate */ 13917c478bd9Sstevel@tonic-gate sp = VTOS(vp); 13927c478bd9Sstevel@tonic-gate mutex_enter(&sp->s_lock); 13937c478bd9Sstevel@tonic-gate ASSERT(sp->s_flag & SMUXED); 13947c478bd9Sstevel@tonic-gate sp->s_flag &= ~SMUXED; 13957c478bd9Sstevel@tonic-gate mutex_exit(&sp->s_lock); 13967c478bd9Sstevel@tonic-gate 13977c478bd9Sstevel@tonic-gate /* 13987c478bd9Sstevel@tonic-gate * clear the owner for this snode 13997c478bd9Sstevel@tonic-gate * see the comment in ldi_mlink_fp() for information about how 14007c478bd9Sstevel@tonic-gate * the ident is allocated 14017c478bd9Sstevel@tonic-gate */ 14027c478bd9Sstevel@tonic-gate if (type == LINKNORMAL) { 14037c478bd9Sstevel@tonic-gate ret = ldi_ident_from_stream(getendq(stp->sd_wrq), &li); 14047c478bd9Sstevel@tonic-gate } else { 14057c478bd9Sstevel@tonic-gate ASSERT(type == LINKPERSIST); 14067c478bd9Sstevel@tonic-gate major = getmajor(stp->sd_vnode->v_rdev); 14077c478bd9Sstevel@tonic-gate ret = ldi_ident_from_major(major, &li); 14087c478bd9Sstevel@tonic-gate } 14097c478bd9Sstevel@tonic-gate 14107c478bd9Sstevel@tonic-gate ASSERT(ret == 0); 14117c478bd9Sstevel@tonic-gate lhp = handle_find(vp, (struct ldi_ident *)li); 14127c478bd9Sstevel@tonic-gate handle_release(lhp); 14137c478bd9Sstevel@tonic-gate ldi_ident_release(li); 14147c478bd9Sstevel@tonic-gate } 14157c478bd9Sstevel@tonic-gate 14167c478bd9Sstevel@tonic-gate /* 14177c478bd9Sstevel@tonic-gate * LDI Consolidation private interfaces 14187c478bd9Sstevel@tonic-gate */ 14197c478bd9Sstevel@tonic-gate int 14207c478bd9Sstevel@tonic-gate ldi_ident_from_mod(struct modlinkage *modlp, ldi_ident_t *lip) 14217c478bd9Sstevel@tonic-gate { 14227c478bd9Sstevel@tonic-gate struct modctl *modp; 14237c478bd9Sstevel@tonic-gate major_t major; 14247c478bd9Sstevel@tonic-gate char *name; 14257c478bd9Sstevel@tonic-gate 14267c478bd9Sstevel@tonic-gate if ((modlp == NULL) || (lip == NULL)) 14277c478bd9Sstevel@tonic-gate return (EINVAL); 14287c478bd9Sstevel@tonic-gate 14297c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 14307c478bd9Sstevel@tonic-gate 14317c478bd9Sstevel@tonic-gate modp = mod_getctl(modlp); 14327c478bd9Sstevel@tonic-gate if (modp == NULL) 14337c478bd9Sstevel@tonic-gate return (EINVAL); 14347c478bd9Sstevel@tonic-gate name = modp->mod_modname; 14357c478bd9Sstevel@tonic-gate if (name == NULL) 14367c478bd9Sstevel@tonic-gate return (EINVAL); 14377c478bd9Sstevel@tonic-gate major = mod_name_to_major(name); 14387c478bd9Sstevel@tonic-gate 14397c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, DDI_DEV_T_NONE, major); 14407c478bd9Sstevel@tonic-gate 14417c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "%s: li=0x%p, mod=%s", 1442184cd04cScth "ldi_ident_from_mod", (void *)*lip, name)); 14437c478bd9Sstevel@tonic-gate 14447c478bd9Sstevel@tonic-gate return (0); 14457c478bd9Sstevel@tonic-gate } 14467c478bd9Sstevel@tonic-gate 14477c478bd9Sstevel@tonic-gate ldi_ident_t 14487c478bd9Sstevel@tonic-gate ldi_ident_from_anon() 14497c478bd9Sstevel@tonic-gate { 14507c478bd9Sstevel@tonic-gate ldi_ident_t lip; 14517c478bd9Sstevel@tonic-gate 14527c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 14537c478bd9Sstevel@tonic-gate 14547c478bd9Sstevel@tonic-gate lip = (ldi_ident_t)ident_alloc("genunix", NULL, DDI_DEV_T_NONE, -1); 14557c478bd9Sstevel@tonic-gate 14567c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, "%s: li=0x%p, mod=%s", 1457184cd04cScth "ldi_ident_from_anon", (void *)lip, "genunix")); 14587c478bd9Sstevel@tonic-gate 14597c478bd9Sstevel@tonic-gate return (lip); 14607c478bd9Sstevel@tonic-gate } 14617c478bd9Sstevel@tonic-gate 14627c478bd9Sstevel@tonic-gate 14637c478bd9Sstevel@tonic-gate /* 14647c478bd9Sstevel@tonic-gate * LDI Public interfaces 14657c478bd9Sstevel@tonic-gate */ 14667c478bd9Sstevel@tonic-gate int 14677c478bd9Sstevel@tonic-gate ldi_ident_from_stream(struct queue *sq, ldi_ident_t *lip) 14687c478bd9Sstevel@tonic-gate { 14697c478bd9Sstevel@tonic-gate struct stdata *stp; 14707c478bd9Sstevel@tonic-gate dev_t dev; 14717c478bd9Sstevel@tonic-gate char *name; 14727c478bd9Sstevel@tonic-gate 14737c478bd9Sstevel@tonic-gate if ((sq == NULL) || (lip == NULL)) 14747c478bd9Sstevel@tonic-gate return (EINVAL); 14757c478bd9Sstevel@tonic-gate 14767c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 14777c478bd9Sstevel@tonic-gate 14787c478bd9Sstevel@tonic-gate stp = sq->q_stream; 14797c478bd9Sstevel@tonic-gate if (!vn_matchops(stp->sd_vnode, spec_getvnodeops())) 14807c478bd9Sstevel@tonic-gate return (EINVAL); 14817c478bd9Sstevel@tonic-gate 14827c478bd9Sstevel@tonic-gate dev = stp->sd_vnode->v_rdev; 14837c478bd9Sstevel@tonic-gate name = mod_major_to_name(getmajor(dev)); 14847c478bd9Sstevel@tonic-gate if (name == NULL) 14857c478bd9Sstevel@tonic-gate return (EINVAL); 14867c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, dev, -1); 14877c478bd9Sstevel@tonic-gate 14887c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1489184cd04cScth "%s: li=0x%p, mod=%s, minor=0x%x, stp=0x%p", 1490184cd04cScth "ldi_ident_from_stream", (void *)*lip, name, getminor(dev), 1491184cd04cScth (void *)stp)); 14927c478bd9Sstevel@tonic-gate 14937c478bd9Sstevel@tonic-gate return (0); 14947c478bd9Sstevel@tonic-gate } 14957c478bd9Sstevel@tonic-gate 14967c478bd9Sstevel@tonic-gate int 14977c478bd9Sstevel@tonic-gate ldi_ident_from_dev(dev_t dev, ldi_ident_t *lip) 14987c478bd9Sstevel@tonic-gate { 14997c478bd9Sstevel@tonic-gate char *name; 15007c478bd9Sstevel@tonic-gate 15017c478bd9Sstevel@tonic-gate if (lip == NULL) 15027c478bd9Sstevel@tonic-gate return (EINVAL); 15037c478bd9Sstevel@tonic-gate 15047c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 15057c478bd9Sstevel@tonic-gate 15067c478bd9Sstevel@tonic-gate name = mod_major_to_name(getmajor(dev)); 15077c478bd9Sstevel@tonic-gate if (name == NULL) 15087c478bd9Sstevel@tonic-gate return (EINVAL); 15097c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, dev, -1); 15107c478bd9Sstevel@tonic-gate 15117c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1512184cd04cScth "%s: li=0x%p, mod=%s, minor=0x%x", 1513184cd04cScth "ldi_ident_from_dev", (void *)*lip, name, getminor(dev))); 15147c478bd9Sstevel@tonic-gate 15157c478bd9Sstevel@tonic-gate return (0); 15167c478bd9Sstevel@tonic-gate } 15177c478bd9Sstevel@tonic-gate 15187c478bd9Sstevel@tonic-gate int 15197c478bd9Sstevel@tonic-gate ldi_ident_from_dip(dev_info_t *dip, ldi_ident_t *lip) 15207c478bd9Sstevel@tonic-gate { 15217c478bd9Sstevel@tonic-gate struct dev_info *devi = (struct dev_info *)dip; 15227c478bd9Sstevel@tonic-gate char *name; 15237c478bd9Sstevel@tonic-gate 15247c478bd9Sstevel@tonic-gate if ((dip == NULL) || (lip == NULL)) 15257c478bd9Sstevel@tonic-gate return (EINVAL); 15267c478bd9Sstevel@tonic-gate 15277c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 15287c478bd9Sstevel@tonic-gate 15297c478bd9Sstevel@tonic-gate name = mod_major_to_name(devi->devi_major); 15307c478bd9Sstevel@tonic-gate if (name == NULL) 15317c478bd9Sstevel@tonic-gate return (EINVAL); 15327c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, dip, DDI_DEV_T_NONE, -1); 15337c478bd9Sstevel@tonic-gate 15347c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1535184cd04cScth "%s: li=0x%p, mod=%s, dip=0x%p", 1536184cd04cScth "ldi_ident_from_dip", (void *)*lip, name, (void *)devi)); 15377c478bd9Sstevel@tonic-gate 15387c478bd9Sstevel@tonic-gate return (0); 15397c478bd9Sstevel@tonic-gate } 15407c478bd9Sstevel@tonic-gate 15417c478bd9Sstevel@tonic-gate int 15427c478bd9Sstevel@tonic-gate ldi_ident_from_major(major_t major, ldi_ident_t *lip) 15437c478bd9Sstevel@tonic-gate { 15447c478bd9Sstevel@tonic-gate char *name; 15457c478bd9Sstevel@tonic-gate 15467c478bd9Sstevel@tonic-gate if (lip == NULL) 15477c478bd9Sstevel@tonic-gate return (EINVAL); 15487c478bd9Sstevel@tonic-gate 15497c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 15507c478bd9Sstevel@tonic-gate 15517c478bd9Sstevel@tonic-gate name = mod_major_to_name(major); 15527c478bd9Sstevel@tonic-gate if (name == NULL) 15537c478bd9Sstevel@tonic-gate return (EINVAL); 15547c478bd9Sstevel@tonic-gate *lip = (ldi_ident_t)ident_alloc(name, NULL, DDI_DEV_T_NONE, major); 15557c478bd9Sstevel@tonic-gate 15567c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1557184cd04cScth "%s: li=0x%p, mod=%s", 1558184cd04cScth "ldi_ident_from_major", (void *)*lip, name)); 15597c478bd9Sstevel@tonic-gate 15607c478bd9Sstevel@tonic-gate return (0); 15617c478bd9Sstevel@tonic-gate } 15627c478bd9Sstevel@tonic-gate 15637c478bd9Sstevel@tonic-gate void 15647c478bd9Sstevel@tonic-gate ldi_ident_release(ldi_ident_t li) 15657c478bd9Sstevel@tonic-gate { 15667c478bd9Sstevel@tonic-gate struct ldi_ident *ident = (struct ldi_ident *)li; 15677c478bd9Sstevel@tonic-gate char *name; 15687c478bd9Sstevel@tonic-gate 15697c478bd9Sstevel@tonic-gate if (li == NULL) 15707c478bd9Sstevel@tonic-gate return; 15717c478bd9Sstevel@tonic-gate 15727c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 15737c478bd9Sstevel@tonic-gate 15747c478bd9Sstevel@tonic-gate name = ident->li_modname; 15757c478bd9Sstevel@tonic-gate 15767c478bd9Sstevel@tonic-gate LDI_ALLOCFREE((CE_WARN, 1577184cd04cScth "%s: li=0x%p, mod=%s", 1578184cd04cScth "ldi_ident_release", (void *)li, name)); 15797c478bd9Sstevel@tonic-gate 15807c478bd9Sstevel@tonic-gate ident_release((struct ldi_ident *)li); 15817c478bd9Sstevel@tonic-gate } 15827c478bd9Sstevel@tonic-gate 15837c478bd9Sstevel@tonic-gate /* get a handle to a device by dev_t and otyp */ 15847c478bd9Sstevel@tonic-gate int 15857c478bd9Sstevel@tonic-gate ldi_open_by_dev(dev_t *devp, int otyp, int flag, cred_t *cr, 15867c478bd9Sstevel@tonic-gate ldi_handle_t *lhp, ldi_ident_t li) 15877c478bd9Sstevel@tonic-gate { 15887c478bd9Sstevel@tonic-gate struct ldi_ident *lip = (struct ldi_ident *)li; 1589184cd04cScth int ret; 15907c478bd9Sstevel@tonic-gate vnode_t *vp; 15917c478bd9Sstevel@tonic-gate 15927c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 15937c478bd9Sstevel@tonic-gate if ((devp == NULL) || (!OTYP_VALID(otyp)) || (cr == NULL) || 15947c478bd9Sstevel@tonic-gate (lhp == NULL) || (lip == NULL)) 15957c478bd9Sstevel@tonic-gate return (EINVAL); 15967c478bd9Sstevel@tonic-gate 15977c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 15987c478bd9Sstevel@tonic-gate 15997c478bd9Sstevel@tonic-gate if ((ret = ldi_vp_from_dev(*devp, otyp, &vp)) != 0) 16007c478bd9Sstevel@tonic-gate return (ret); 16017c478bd9Sstevel@tonic-gate 16027c478bd9Sstevel@tonic-gate if ((ret = ldi_open_by_vp(&vp, flag, cr, lhp, lip)) == 0) { 16037c478bd9Sstevel@tonic-gate *devp = vp->v_rdev; 16047c478bd9Sstevel@tonic-gate } 16057c478bd9Sstevel@tonic-gate VN_RELE(vp); 16067c478bd9Sstevel@tonic-gate 16077c478bd9Sstevel@tonic-gate return (ret); 16087c478bd9Sstevel@tonic-gate } 16097c478bd9Sstevel@tonic-gate 16107c478bd9Sstevel@tonic-gate /* get a handle to a device by pathname */ 16117c478bd9Sstevel@tonic-gate int 16127c478bd9Sstevel@tonic-gate ldi_open_by_name(char *pathname, int flag, cred_t *cr, 16137c478bd9Sstevel@tonic-gate ldi_handle_t *lhp, ldi_ident_t li) 16147c478bd9Sstevel@tonic-gate { 16157c478bd9Sstevel@tonic-gate struct ldi_ident *lip = (struct ldi_ident *)li; 1616184cd04cScth int ret; 16177c478bd9Sstevel@tonic-gate vnode_t *vp; 16187c478bd9Sstevel@tonic-gate 16197c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 16207c478bd9Sstevel@tonic-gate if ((pathname == NULL) || (*pathname != '/') || 16217c478bd9Sstevel@tonic-gate (cr == NULL) || (lhp == NULL) || (lip == NULL)) 16227c478bd9Sstevel@tonic-gate return (EINVAL); 16237c478bd9Sstevel@tonic-gate 16247c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 16257c478bd9Sstevel@tonic-gate 16267c478bd9Sstevel@tonic-gate if ((ret = ldi_vp_from_name(pathname, &vp)) != 0) 16277c478bd9Sstevel@tonic-gate return (ret); 16287c478bd9Sstevel@tonic-gate 16297c478bd9Sstevel@tonic-gate ret = ldi_open_by_vp(&vp, flag, cr, lhp, lip); 16307c478bd9Sstevel@tonic-gate VN_RELE(vp); 16317c478bd9Sstevel@tonic-gate 16327c478bd9Sstevel@tonic-gate return (ret); 16337c478bd9Sstevel@tonic-gate } 16347c478bd9Sstevel@tonic-gate 16357c478bd9Sstevel@tonic-gate /* get a handle to a device by devid and minor_name */ 16367c478bd9Sstevel@tonic-gate int 16377c478bd9Sstevel@tonic-gate ldi_open_by_devid(ddi_devid_t devid, char *minor_name, 16387c478bd9Sstevel@tonic-gate int flag, cred_t *cr, ldi_handle_t *lhp, ldi_ident_t li) 16397c478bd9Sstevel@tonic-gate { 16407c478bd9Sstevel@tonic-gate struct ldi_ident *lip = (struct ldi_ident *)li; 16417c478bd9Sstevel@tonic-gate int ret; 16427c478bd9Sstevel@tonic-gate vnode_t *vp; 16437c478bd9Sstevel@tonic-gate 16447c478bd9Sstevel@tonic-gate /* sanity check required input parameters */ 16457c478bd9Sstevel@tonic-gate if ((minor_name == NULL) || (cr == NULL) || 16467c478bd9Sstevel@tonic-gate (lhp == NULL) || (lip == NULL)) 16477c478bd9Sstevel@tonic-gate return (EINVAL); 16487c478bd9Sstevel@tonic-gate 16497c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 16507c478bd9Sstevel@tonic-gate 16517c478bd9Sstevel@tonic-gate if ((ret = ldi_vp_from_devid(devid, minor_name, &vp)) != 0) 16527c478bd9Sstevel@tonic-gate return (ret); 16537c478bd9Sstevel@tonic-gate 16547c478bd9Sstevel@tonic-gate ret = ldi_open_by_vp(&vp, flag, cr, lhp, lip); 16557c478bd9Sstevel@tonic-gate VN_RELE(vp); 16567c478bd9Sstevel@tonic-gate 16577c478bd9Sstevel@tonic-gate return (ret); 16587c478bd9Sstevel@tonic-gate } 16597c478bd9Sstevel@tonic-gate 16607c478bd9Sstevel@tonic-gate int 16617c478bd9Sstevel@tonic-gate ldi_close(ldi_handle_t lh, int flag, cred_t *cr) 16627c478bd9Sstevel@tonic-gate { 16637c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 16647c478bd9Sstevel@tonic-gate struct ldi_event *lep; 1665184cd04cScth int err = 0; 166625e8c5aaSvikram int notify = 0; 166725e8c5aaSvikram list_t *listp; 166825e8c5aaSvikram ldi_ev_callback_impl_t *lecp; 16697c478bd9Sstevel@tonic-gate 16707c478bd9Sstevel@tonic-gate if (lh == NULL) 16717c478bd9Sstevel@tonic-gate return (EINVAL); 16727c478bd9Sstevel@tonic-gate 16737c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 16747c478bd9Sstevel@tonic-gate 167525e8c5aaSvikram #ifdef LDI_OBSOLETE_EVENT 167625e8c5aaSvikram 16777c478bd9Sstevel@tonic-gate /* 16787c478bd9Sstevel@tonic-gate * Any event handlers should have been unregistered by the 16797c478bd9Sstevel@tonic-gate * time ldi_close() is called. If they haven't then it's a 16807c478bd9Sstevel@tonic-gate * bug. 16817c478bd9Sstevel@tonic-gate * 16827c478bd9Sstevel@tonic-gate * In a debug kernel we'll panic to make the problem obvious. 16837c478bd9Sstevel@tonic-gate */ 16847c478bd9Sstevel@tonic-gate ASSERT(handlep->lh_events == NULL); 16857c478bd9Sstevel@tonic-gate 16867c478bd9Sstevel@tonic-gate /* 16877c478bd9Sstevel@tonic-gate * On a production kernel we'll "do the right thing" (unregister 16887c478bd9Sstevel@tonic-gate * the event handlers) and then complain about having to do the 16897c478bd9Sstevel@tonic-gate * work ourselves. 16907c478bd9Sstevel@tonic-gate */ 16917c478bd9Sstevel@tonic-gate while ((lep = handlep->lh_events) != NULL) { 16927c478bd9Sstevel@tonic-gate err = 1; 16937c478bd9Sstevel@tonic-gate (void) ldi_remove_event_handler(lh, (ldi_callback_id_t)lep); 16947c478bd9Sstevel@tonic-gate } 16957c478bd9Sstevel@tonic-gate if (err) { 16967c478bd9Sstevel@tonic-gate struct ldi_ident *lip = handlep->lh_ident; 16977c478bd9Sstevel@tonic-gate ASSERT(lip != NULL); 16987c478bd9Sstevel@tonic-gate cmn_err(CE_NOTE, "ldi err: %s " 16997c478bd9Sstevel@tonic-gate "failed to unregister layered event handlers before " 17007c478bd9Sstevel@tonic-gate "closing devices", lip->li_modname); 17017c478bd9Sstevel@tonic-gate } 170225e8c5aaSvikram #endif 17037c478bd9Sstevel@tonic-gate 17047c478bd9Sstevel@tonic-gate /* do a layered close on the device */ 1705da6c28aaSamw err = VOP_CLOSE(handlep->lh_vp, flag | FKLYR, 1, (offset_t)0, cr, NULL); 17067c478bd9Sstevel@tonic-gate 17077c478bd9Sstevel@tonic-gate LDI_OPENCLOSE((CE_WARN, "%s: lh=0x%p", "ldi close", (void *)lh)); 17087c478bd9Sstevel@tonic-gate 170925e8c5aaSvikram /* 171025e8c5aaSvikram * Search the event callback list for callbacks with this 171125e8c5aaSvikram * handle. There are 2 cases 171225e8c5aaSvikram * 1. Called in the context of a notify. The handle consumer 171325e8c5aaSvikram * is releasing its hold on the device to allow a reconfiguration 171425e8c5aaSvikram * of the device. Simply NULL out the handle and the notify callback. 171525e8c5aaSvikram * The finalize callback is still available so that the consumer 171625e8c5aaSvikram * knows of the final disposition of the device. 171725e8c5aaSvikram * 2. Not called in the context of notify. NULL out the handle as well 171825e8c5aaSvikram * as the notify and finalize callbacks. Since the consumer has 171925e8c5aaSvikram * closed the handle, we assume it is not interested in the 172025e8c5aaSvikram * notify and finalize callbacks. 172125e8c5aaSvikram */ 172225e8c5aaSvikram ldi_ev_lock(); 172325e8c5aaSvikram 172425e8c5aaSvikram if (handlep->lh_flags & LH_FLAGS_NOTIFY) 172525e8c5aaSvikram notify = 1; 172625e8c5aaSvikram listp = &ldi_ev_callback_list.le_head; 172725e8c5aaSvikram for (lecp = list_head(listp); lecp; lecp = list_next(listp, lecp)) { 172825e8c5aaSvikram if (lecp->lec_lhp != handlep) 172925e8c5aaSvikram continue; 173025e8c5aaSvikram lecp->lec_lhp = NULL; 173125e8c5aaSvikram lecp->lec_notify = NULL; 173225e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_close: NULLed lh and notify")); 173325e8c5aaSvikram if (!notify) { 173425e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_close: NULLed finalize")); 173525e8c5aaSvikram lecp->lec_finalize = NULL; 173625e8c5aaSvikram } 173725e8c5aaSvikram } 173825e8c5aaSvikram 173925e8c5aaSvikram if (notify) 174025e8c5aaSvikram handlep->lh_flags &= ~LH_FLAGS_NOTIFY; 174125e8c5aaSvikram ldi_ev_unlock(); 174225e8c5aaSvikram 17437c478bd9Sstevel@tonic-gate /* 17447c478bd9Sstevel@tonic-gate * Free the handle even if the device close failed. why? 17457c478bd9Sstevel@tonic-gate * 17467c478bd9Sstevel@tonic-gate * If the device close failed we can't really make assumptions 17477c478bd9Sstevel@tonic-gate * about the devices state so we shouldn't allow access to the 17487c478bd9Sstevel@tonic-gate * device via this handle any more. If the device consumer wants 17497c478bd9Sstevel@tonic-gate * to access the device again they should open it again. 17507c478bd9Sstevel@tonic-gate * 17517c478bd9Sstevel@tonic-gate * This is the same way file/device close failures are handled 17527c478bd9Sstevel@tonic-gate * in other places like spec_close() and closeandsetf(). 17537c478bd9Sstevel@tonic-gate */ 17547c478bd9Sstevel@tonic-gate handle_release(handlep); 17557c478bd9Sstevel@tonic-gate return (err); 17567c478bd9Sstevel@tonic-gate } 17577c478bd9Sstevel@tonic-gate 17587c478bd9Sstevel@tonic-gate int 17597c478bd9Sstevel@tonic-gate ldi_read(ldi_handle_t lh, struct uio *uiop, cred_t *credp) 17607c478bd9Sstevel@tonic-gate { 17617c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 17627c478bd9Sstevel@tonic-gate vnode_t *vp; 17637c478bd9Sstevel@tonic-gate dev_t dev; 17647c478bd9Sstevel@tonic-gate int ret; 17657c478bd9Sstevel@tonic-gate 17667c478bd9Sstevel@tonic-gate if (lh == NULL) 17677c478bd9Sstevel@tonic-gate return (EINVAL); 17687c478bd9Sstevel@tonic-gate 17697c478bd9Sstevel@tonic-gate vp = handlep->lh_vp; 17707c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 17717c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 17727c478bd9Sstevel@tonic-gate ret = cdev_read(dev, uiop, credp); 17737c478bd9Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 17747c478bd9Sstevel@tonic-gate ret = strread(vp, uiop, credp); 17757c478bd9Sstevel@tonic-gate } else { 17767c478bd9Sstevel@tonic-gate return (ENOTSUP); 17777c478bd9Sstevel@tonic-gate } 17787c478bd9Sstevel@tonic-gate return (ret); 17797c478bd9Sstevel@tonic-gate } 17807c478bd9Sstevel@tonic-gate 17817c478bd9Sstevel@tonic-gate int 17827c478bd9Sstevel@tonic-gate ldi_write(ldi_handle_t lh, struct uio *uiop, cred_t *credp) 17837c478bd9Sstevel@tonic-gate { 17847c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 17857c478bd9Sstevel@tonic-gate vnode_t *vp; 17867c478bd9Sstevel@tonic-gate dev_t dev; 17877c478bd9Sstevel@tonic-gate int ret; 17887c478bd9Sstevel@tonic-gate 17897c478bd9Sstevel@tonic-gate if (lh == NULL) 17907c478bd9Sstevel@tonic-gate return (EINVAL); 17917c478bd9Sstevel@tonic-gate 17927c478bd9Sstevel@tonic-gate vp = handlep->lh_vp; 17937c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 17947c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 17957c478bd9Sstevel@tonic-gate ret = cdev_write(dev, uiop, credp); 17967c478bd9Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 17977c478bd9Sstevel@tonic-gate ret = strwrite(vp, uiop, credp); 17987c478bd9Sstevel@tonic-gate } else { 17997c478bd9Sstevel@tonic-gate return (ENOTSUP); 18007c478bd9Sstevel@tonic-gate } 18017c478bd9Sstevel@tonic-gate return (ret); 18027c478bd9Sstevel@tonic-gate } 18037c478bd9Sstevel@tonic-gate 18047c478bd9Sstevel@tonic-gate int 18057c478bd9Sstevel@tonic-gate ldi_get_size(ldi_handle_t lh, uint64_t *sizep) 18067c478bd9Sstevel@tonic-gate { 1807184cd04cScth int otyp; 18087c478bd9Sstevel@tonic-gate uint_t value; 18097c478bd9Sstevel@tonic-gate int64_t drv_prop64; 18107c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 1811184cd04cScth uint_t blksize; 1812184cd04cScth int blkshift; 18137c478bd9Sstevel@tonic-gate 18147c478bd9Sstevel@tonic-gate 18157c478bd9Sstevel@tonic-gate if ((lh == NULL) || (sizep == NULL)) 18167c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 18177c478bd9Sstevel@tonic-gate 18187c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_STREAM) 18197c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 18207c478bd9Sstevel@tonic-gate 18217c478bd9Sstevel@tonic-gate /* 18227c478bd9Sstevel@tonic-gate * Determine device type (char or block). 18237c478bd9Sstevel@tonic-gate * Character devices support Size/size 18247c478bd9Sstevel@tonic-gate * property value. Block devices may support 18257c478bd9Sstevel@tonic-gate * Nblocks/nblocks or Size/size property value. 18267c478bd9Sstevel@tonic-gate */ 18277c478bd9Sstevel@tonic-gate if ((ldi_get_otyp(lh, &otyp)) != 0) 18287c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 18297c478bd9Sstevel@tonic-gate 18307c478bd9Sstevel@tonic-gate if (otyp == OTYP_BLK) { 18317c478bd9Sstevel@tonic-gate if (ldi_prop_exists(lh, 1832184cd04cScth DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "Nblocks")) { 18337c478bd9Sstevel@tonic-gate 18347c478bd9Sstevel@tonic-gate drv_prop64 = ldi_prop_get_int64(lh, 18357c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 18367c478bd9Sstevel@tonic-gate "Nblocks", 0); 1837184cd04cScth blksize = ldi_prop_get_int(lh, 1838184cd04cScth DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1839184cd04cScth "blksize", DEV_BSIZE); 1840184cd04cScth if (blksize == DEV_BSIZE) 1841184cd04cScth blksize = ldi_prop_get_int(lh, LDI_DEV_T_ANY | 1842184cd04cScth DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1843184cd04cScth "device-blksize", DEV_BSIZE); 1844184cd04cScth 1845184cd04cScth /* blksize must be a power of two */ 1846184cd04cScth ASSERT(BIT_ONLYONESET(blksize)); 1847184cd04cScth blkshift = highbit(blksize) - 1; 1848184cd04cScth 1849184cd04cScth /* 1850184cd04cScth * We don't support Nblocks values that don't have 1851184cd04cScth * an accurate uint64_t byte count representation. 1852184cd04cScth */ 1853184cd04cScth if ((uint64_t)drv_prop64 >= (UINT64_MAX >> blkshift)) 1854184cd04cScth return (DDI_FAILURE); 1855184cd04cScth 1856184cd04cScth *sizep = (uint64_t) 1857184cd04cScth (((u_offset_t)drv_prop64) << blkshift); 18587c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 18597c478bd9Sstevel@tonic-gate } 18607c478bd9Sstevel@tonic-gate 18617c478bd9Sstevel@tonic-gate if (ldi_prop_exists(lh, 1862184cd04cScth DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "nblocks")) { 18637c478bd9Sstevel@tonic-gate 18647c478bd9Sstevel@tonic-gate value = ldi_prop_get_int(lh, 18657c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 18667c478bd9Sstevel@tonic-gate "nblocks", 0); 1867184cd04cScth blksize = ldi_prop_get_int(lh, 1868184cd04cScth DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1869184cd04cScth "blksize", DEV_BSIZE); 1870184cd04cScth if (blksize == DEV_BSIZE) 1871184cd04cScth blksize = ldi_prop_get_int(lh, LDI_DEV_T_ANY | 1872184cd04cScth DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, 1873184cd04cScth "device-blksize", DEV_BSIZE); 1874184cd04cScth 1875184cd04cScth /* blksize must be a power of two */ 1876184cd04cScth ASSERT(BIT_ONLYONESET(blksize)); 1877184cd04cScth blkshift = highbit(blksize) - 1; 1878184cd04cScth 1879184cd04cScth /* 1880184cd04cScth * We don't support nblocks values that don't have an 1881184cd04cScth * accurate uint64_t byte count representation. 1882184cd04cScth */ 1883184cd04cScth if ((uint64_t)value >= (UINT64_MAX >> blkshift)) 1884184cd04cScth return (DDI_FAILURE); 1885184cd04cScth 1886184cd04cScth *sizep = (uint64_t) 1887184cd04cScth (((u_offset_t)value) << blkshift); 18887c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 18897c478bd9Sstevel@tonic-gate } 18907c478bd9Sstevel@tonic-gate } 18917c478bd9Sstevel@tonic-gate 18927c478bd9Sstevel@tonic-gate if (ldi_prop_exists(lh, 1893184cd04cScth DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "Size")) { 18947c478bd9Sstevel@tonic-gate 18957c478bd9Sstevel@tonic-gate drv_prop64 = ldi_prop_get_int64(lh, 18967c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "Size", 0); 18977c478bd9Sstevel@tonic-gate *sizep = (uint64_t)drv_prop64; 18987c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 18997c478bd9Sstevel@tonic-gate } 19007c478bd9Sstevel@tonic-gate 19017c478bd9Sstevel@tonic-gate if (ldi_prop_exists(lh, 1902184cd04cScth DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "size")) { 19037c478bd9Sstevel@tonic-gate 19047c478bd9Sstevel@tonic-gate value = ldi_prop_get_int(lh, 19057c478bd9Sstevel@tonic-gate DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "size", 0); 19067c478bd9Sstevel@tonic-gate *sizep = (uint64_t)value; 19077c478bd9Sstevel@tonic-gate return (DDI_SUCCESS); 19087c478bd9Sstevel@tonic-gate } 19097c478bd9Sstevel@tonic-gate 19107c478bd9Sstevel@tonic-gate /* unable to determine device size */ 19117c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 19127c478bd9Sstevel@tonic-gate } 19137c478bd9Sstevel@tonic-gate 19147c478bd9Sstevel@tonic-gate int 19157c478bd9Sstevel@tonic-gate ldi_ioctl(ldi_handle_t lh, int cmd, intptr_t arg, int mode, 19167c478bd9Sstevel@tonic-gate cred_t *cr, int *rvalp) 19177c478bd9Sstevel@tonic-gate { 19187c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 19197c478bd9Sstevel@tonic-gate vnode_t *vp; 19207c478bd9Sstevel@tonic-gate dev_t dev; 19217c478bd9Sstevel@tonic-gate int ret, copymode; 19227c478bd9Sstevel@tonic-gate 19237c478bd9Sstevel@tonic-gate if (lh == NULL) 19247c478bd9Sstevel@tonic-gate return (EINVAL); 19257c478bd9Sstevel@tonic-gate 19267c478bd9Sstevel@tonic-gate /* 19277c478bd9Sstevel@tonic-gate * if the data pointed to by arg is located in the kernel then 19287c478bd9Sstevel@tonic-gate * make sure the FNATIVE flag is set. 19297c478bd9Sstevel@tonic-gate */ 19307c478bd9Sstevel@tonic-gate if (mode & FKIOCTL) 19317c478bd9Sstevel@tonic-gate mode = (mode & ~FMODELS) | FNATIVE | FKIOCTL; 19327c478bd9Sstevel@tonic-gate 19337c478bd9Sstevel@tonic-gate vp = handlep->lh_vp; 19347c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 19357c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 19367c478bd9Sstevel@tonic-gate ret = cdev_ioctl(dev, cmd, arg, mode, cr, rvalp); 19377c478bd9Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 19387c478bd9Sstevel@tonic-gate copymode = (mode & FKIOCTL) ? K_TO_K : U_TO_K; 19397c478bd9Sstevel@tonic-gate 19407c478bd9Sstevel@tonic-gate /* 19417c478bd9Sstevel@tonic-gate * if we get an I_PLINK from within the kernel the 19427c478bd9Sstevel@tonic-gate * arg is a layered handle pointer instead of 19437c478bd9Sstevel@tonic-gate * a file descriptor, so we translate this ioctl 19447c478bd9Sstevel@tonic-gate * into a private one that can handle this. 19457c478bd9Sstevel@tonic-gate */ 19467c478bd9Sstevel@tonic-gate if ((mode & FKIOCTL) && (cmd == I_PLINK)) 19477c478bd9Sstevel@tonic-gate cmd = _I_PLINK_LH; 19487c478bd9Sstevel@tonic-gate 19497c478bd9Sstevel@tonic-gate ret = strioctl(vp, cmd, arg, mode, copymode, cr, rvalp); 19507c478bd9Sstevel@tonic-gate } else { 19517c478bd9Sstevel@tonic-gate return (ENOTSUP); 19527c478bd9Sstevel@tonic-gate } 19537c478bd9Sstevel@tonic-gate 19547c478bd9Sstevel@tonic-gate return (ret); 19557c478bd9Sstevel@tonic-gate } 19567c478bd9Sstevel@tonic-gate 19577c478bd9Sstevel@tonic-gate int 19587c478bd9Sstevel@tonic-gate ldi_poll(ldi_handle_t lh, short events, int anyyet, short *reventsp, 19597c478bd9Sstevel@tonic-gate struct pollhead **phpp) 19607c478bd9Sstevel@tonic-gate { 19617c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 19627c478bd9Sstevel@tonic-gate vnode_t *vp; 19637c478bd9Sstevel@tonic-gate dev_t dev; 19647c478bd9Sstevel@tonic-gate int ret; 19657c478bd9Sstevel@tonic-gate 19667c478bd9Sstevel@tonic-gate if (lh == NULL) 19677c478bd9Sstevel@tonic-gate return (EINVAL); 19687c478bd9Sstevel@tonic-gate 19697c478bd9Sstevel@tonic-gate vp = handlep->lh_vp; 19707c478bd9Sstevel@tonic-gate dev = vp->v_rdev; 19717c478bd9Sstevel@tonic-gate if (handlep->lh_type & LH_CBDEV) { 19727c478bd9Sstevel@tonic-gate ret = cdev_poll(dev, events, anyyet, reventsp, phpp); 19737c478bd9Sstevel@tonic-gate } else if (handlep->lh_type & LH_STREAM) { 19747c478bd9Sstevel@tonic-gate ret = strpoll(vp->v_stream, events, anyyet, reventsp, phpp); 19757c478bd9Sstevel@tonic-gate } else { 19767c478bd9Sstevel@tonic-gate return (ENOTSUP); 19777c478bd9Sstevel@tonic-gate } 19787c478bd9Sstevel@tonic-gate 19797c478bd9Sstevel@tonic-gate return (ret); 19807c478bd9Sstevel@tonic-gate } 19817c478bd9Sstevel@tonic-gate 19827c478bd9Sstevel@tonic-gate int 19837c478bd9Sstevel@tonic-gate ldi_prop_op(ldi_handle_t lh, ddi_prop_op_t prop_op, 19847c478bd9Sstevel@tonic-gate int flags, char *name, caddr_t valuep, int *length) 19857c478bd9Sstevel@tonic-gate { 19867c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 19877c478bd9Sstevel@tonic-gate dev_t dev; 19887c478bd9Sstevel@tonic-gate dev_info_t *dip; 19897c478bd9Sstevel@tonic-gate int ret; 19907c478bd9Sstevel@tonic-gate struct snode *csp; 19917c478bd9Sstevel@tonic-gate 19927c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 19937c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 19947c478bd9Sstevel@tonic-gate 19957c478bd9Sstevel@tonic-gate if ((prop_op != PROP_LEN) && (valuep == NULL)) 19967c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 19977c478bd9Sstevel@tonic-gate 19987c478bd9Sstevel@tonic-gate if (length == NULL) 19997c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 20007c478bd9Sstevel@tonic-gate 20017c478bd9Sstevel@tonic-gate /* 20027c478bd9Sstevel@tonic-gate * try to find the associated dip, 20037c478bd9Sstevel@tonic-gate * this places a hold on the driver 20047c478bd9Sstevel@tonic-gate */ 20057c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 20067c478bd9Sstevel@tonic-gate 20077c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 20087c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 20097c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 20107c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 20117c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 20127c478bd9Sstevel@tonic-gate if (dip == NULL) 20137c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 20147c478bd9Sstevel@tonic-gate 20157c478bd9Sstevel@tonic-gate if (dip == NULL) 20167c478bd9Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND); 20177c478bd9Sstevel@tonic-gate 20187c478bd9Sstevel@tonic-gate ret = i_ldi_prop_op(dev, dip, prop_op, flags, name, valuep, length); 20197c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 20207c478bd9Sstevel@tonic-gate 20217c478bd9Sstevel@tonic-gate return (ret); 20227c478bd9Sstevel@tonic-gate } 20237c478bd9Sstevel@tonic-gate 20247c478bd9Sstevel@tonic-gate int 20257c478bd9Sstevel@tonic-gate ldi_strategy(ldi_handle_t lh, struct buf *bp) 20267c478bd9Sstevel@tonic-gate { 20277c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 20287c478bd9Sstevel@tonic-gate dev_t dev; 20297c478bd9Sstevel@tonic-gate 20307c478bd9Sstevel@tonic-gate if ((lh == NULL) || (bp == NULL)) 20317c478bd9Sstevel@tonic-gate return (EINVAL); 20327c478bd9Sstevel@tonic-gate 20337c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 20347c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 20357c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 20367c478bd9Sstevel@tonic-gate return (ENOTSUP); 20377c478bd9Sstevel@tonic-gate 20387c478bd9Sstevel@tonic-gate bp->b_edev = dev; 20397c478bd9Sstevel@tonic-gate bp->b_dev = cmpdev(dev); 20407c478bd9Sstevel@tonic-gate return (bdev_strategy(bp)); 20417c478bd9Sstevel@tonic-gate } 20427c478bd9Sstevel@tonic-gate 20437c478bd9Sstevel@tonic-gate int 20447c478bd9Sstevel@tonic-gate ldi_dump(ldi_handle_t lh, caddr_t addr, daddr_t blkno, int nblk) 20457c478bd9Sstevel@tonic-gate { 20467c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 20477c478bd9Sstevel@tonic-gate dev_t dev; 20487c478bd9Sstevel@tonic-gate 20497c478bd9Sstevel@tonic-gate if (lh == NULL) 20507c478bd9Sstevel@tonic-gate return (EINVAL); 20517c478bd9Sstevel@tonic-gate 20527c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 20537c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 20547c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 20557c478bd9Sstevel@tonic-gate return (ENOTSUP); 20567c478bd9Sstevel@tonic-gate 20577c478bd9Sstevel@tonic-gate return (bdev_dump(dev, addr, blkno, nblk)); 20587c478bd9Sstevel@tonic-gate } 20597c478bd9Sstevel@tonic-gate 20607c478bd9Sstevel@tonic-gate int 20617c478bd9Sstevel@tonic-gate ldi_devmap(ldi_handle_t lh, devmap_cookie_t dhp, offset_t off, 20627c478bd9Sstevel@tonic-gate size_t len, size_t *maplen, uint_t model) 20637c478bd9Sstevel@tonic-gate { 20647c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 20657c478bd9Sstevel@tonic-gate dev_t dev; 20667c478bd9Sstevel@tonic-gate 20677c478bd9Sstevel@tonic-gate if (lh == NULL) 20687c478bd9Sstevel@tonic-gate return (EINVAL); 20697c478bd9Sstevel@tonic-gate 20707c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 20717c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 20727c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 20737c478bd9Sstevel@tonic-gate return (ENOTSUP); 20747c478bd9Sstevel@tonic-gate 20757c478bd9Sstevel@tonic-gate return (cdev_devmap(dev, dhp, off, len, maplen, model)); 20767c478bd9Sstevel@tonic-gate } 20777c478bd9Sstevel@tonic-gate 20787c478bd9Sstevel@tonic-gate int 20797c478bd9Sstevel@tonic-gate ldi_aread(ldi_handle_t lh, struct aio_req *aio_reqp, cred_t *cr) 20807c478bd9Sstevel@tonic-gate { 20817c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 20827c478bd9Sstevel@tonic-gate dev_t dev; 20837c478bd9Sstevel@tonic-gate struct cb_ops *cb; 20847c478bd9Sstevel@tonic-gate 20857c478bd9Sstevel@tonic-gate if (lh == NULL) 20867c478bd9Sstevel@tonic-gate return (EINVAL); 20877c478bd9Sstevel@tonic-gate 20887c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 20897c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 20907c478bd9Sstevel@tonic-gate return (ENOTSUP); 20917c478bd9Sstevel@tonic-gate 20927c478bd9Sstevel@tonic-gate /* 20937c478bd9Sstevel@tonic-gate * Kaio is only supported on block devices. 20947c478bd9Sstevel@tonic-gate */ 20957c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 20967c478bd9Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops; 20977c478bd9Sstevel@tonic-gate if (cb->cb_strategy == nodev || cb->cb_strategy == NULL) 20987c478bd9Sstevel@tonic-gate return (ENOTSUP); 20997c478bd9Sstevel@tonic-gate 21007c478bd9Sstevel@tonic-gate if (cb->cb_aread == NULL) 21017c478bd9Sstevel@tonic-gate return (ENOTSUP); 21027c478bd9Sstevel@tonic-gate 21037c478bd9Sstevel@tonic-gate return (cb->cb_aread(dev, aio_reqp, cr)); 21047c478bd9Sstevel@tonic-gate } 21057c478bd9Sstevel@tonic-gate 21067c478bd9Sstevel@tonic-gate int 21077c478bd9Sstevel@tonic-gate ldi_awrite(ldi_handle_t lh, struct aio_req *aio_reqp, cred_t *cr) 21087c478bd9Sstevel@tonic-gate { 21097c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 21107c478bd9Sstevel@tonic-gate struct cb_ops *cb; 21117c478bd9Sstevel@tonic-gate dev_t dev; 21127c478bd9Sstevel@tonic-gate 21137c478bd9Sstevel@tonic-gate if (lh == NULL) 21147c478bd9Sstevel@tonic-gate return (EINVAL); 21157c478bd9Sstevel@tonic-gate 21167c478bd9Sstevel@tonic-gate /* this entry point is only supported for cb devices */ 21177c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_CBDEV)) 21187c478bd9Sstevel@tonic-gate return (ENOTSUP); 21197c478bd9Sstevel@tonic-gate 21207c478bd9Sstevel@tonic-gate /* 21217c478bd9Sstevel@tonic-gate * Kaio is only supported on block devices. 21227c478bd9Sstevel@tonic-gate */ 21237c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 21247c478bd9Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops; 21257c478bd9Sstevel@tonic-gate if (cb->cb_strategy == nodev || cb->cb_strategy == NULL) 21267c478bd9Sstevel@tonic-gate return (ENOTSUP); 21277c478bd9Sstevel@tonic-gate 21287c478bd9Sstevel@tonic-gate if (cb->cb_awrite == NULL) 21297c478bd9Sstevel@tonic-gate return (ENOTSUP); 21307c478bd9Sstevel@tonic-gate 21317c478bd9Sstevel@tonic-gate return (cb->cb_awrite(dev, aio_reqp, cr)); 21327c478bd9Sstevel@tonic-gate } 21337c478bd9Sstevel@tonic-gate 21347c478bd9Sstevel@tonic-gate int 21357c478bd9Sstevel@tonic-gate ldi_putmsg(ldi_handle_t lh, mblk_t *smp) 21367c478bd9Sstevel@tonic-gate { 21377c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 21387c478bd9Sstevel@tonic-gate int ret; 21397c478bd9Sstevel@tonic-gate 21407c478bd9Sstevel@tonic-gate if ((lh == NULL) || (smp == NULL)) 21417c478bd9Sstevel@tonic-gate return (EINVAL); 21427c478bd9Sstevel@tonic-gate 21437c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_STREAM)) { 21447c478bd9Sstevel@tonic-gate freemsg(smp); 21457c478bd9Sstevel@tonic-gate return (ENOTSUP); 21467c478bd9Sstevel@tonic-gate } 21477c478bd9Sstevel@tonic-gate 2148de8c4a14SErik Nordmark /* 2149de8c4a14SErik Nordmark * If we don't have db_credp, set it. Note that we can not be called 2150de8c4a14SErik Nordmark * from interrupt context. 2151de8c4a14SErik Nordmark */ 2152de8c4a14SErik Nordmark if (msg_getcred(smp, NULL) == NULL) 2153de8c4a14SErik Nordmark mblk_setcred(smp, CRED(), curproc->p_pid); 2154de8c4a14SErik Nordmark 21557c478bd9Sstevel@tonic-gate /* Send message while honoring flow control */ 21567c478bd9Sstevel@tonic-gate ret = kstrputmsg(handlep->lh_vp, smp, NULL, 0, 0, 2157184cd04cScth MSG_BAND | MSG_HOLDSIG | MSG_IGNERROR, 0); 21587c478bd9Sstevel@tonic-gate 21597c478bd9Sstevel@tonic-gate return (ret); 21607c478bd9Sstevel@tonic-gate } 21617c478bd9Sstevel@tonic-gate 21627c478bd9Sstevel@tonic-gate int 21637c478bd9Sstevel@tonic-gate ldi_getmsg(ldi_handle_t lh, mblk_t **rmp, timestruc_t *timeo) 21647c478bd9Sstevel@tonic-gate { 21657c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 21667c478bd9Sstevel@tonic-gate clock_t timout; /* milliseconds */ 21677c478bd9Sstevel@tonic-gate uchar_t pri; 21687c478bd9Sstevel@tonic-gate rval_t rval; 21697c478bd9Sstevel@tonic-gate int ret, pflag; 21707c478bd9Sstevel@tonic-gate 21717c478bd9Sstevel@tonic-gate 21727c478bd9Sstevel@tonic-gate if (lh == NULL) 21737c478bd9Sstevel@tonic-gate return (EINVAL); 21747c478bd9Sstevel@tonic-gate 21757c478bd9Sstevel@tonic-gate if (!(handlep->lh_type & LH_STREAM)) 21767c478bd9Sstevel@tonic-gate return (ENOTSUP); 21777c478bd9Sstevel@tonic-gate 21787c478bd9Sstevel@tonic-gate /* Convert from nanoseconds to milliseconds */ 21797c478bd9Sstevel@tonic-gate if (timeo != NULL) { 21807c478bd9Sstevel@tonic-gate timout = timeo->tv_sec * 1000 + timeo->tv_nsec / 1000000; 21817c478bd9Sstevel@tonic-gate if (timout > INT_MAX) 21827c478bd9Sstevel@tonic-gate return (EINVAL); 21837c478bd9Sstevel@tonic-gate } else 21847c478bd9Sstevel@tonic-gate timout = -1; 21857c478bd9Sstevel@tonic-gate 21867c478bd9Sstevel@tonic-gate /* Wait for timeout millseconds for a message */ 21877c478bd9Sstevel@tonic-gate pflag = MSG_ANY; 21887c478bd9Sstevel@tonic-gate pri = 0; 21897c478bd9Sstevel@tonic-gate *rmp = NULL; 21907c478bd9Sstevel@tonic-gate ret = kstrgetmsg(handlep->lh_vp, 2191184cd04cScth rmp, NULL, &pri, &pflag, timout, &rval); 21927c478bd9Sstevel@tonic-gate return (ret); 21937c478bd9Sstevel@tonic-gate } 21947c478bd9Sstevel@tonic-gate 21957c478bd9Sstevel@tonic-gate int 21967c478bd9Sstevel@tonic-gate ldi_get_dev(ldi_handle_t lh, dev_t *devp) 21977c478bd9Sstevel@tonic-gate { 21987c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 21997c478bd9Sstevel@tonic-gate 22007c478bd9Sstevel@tonic-gate if ((lh == NULL) || (devp == NULL)) 22017c478bd9Sstevel@tonic-gate return (EINVAL); 22027c478bd9Sstevel@tonic-gate 22037c478bd9Sstevel@tonic-gate *devp = handlep->lh_vp->v_rdev; 22047c478bd9Sstevel@tonic-gate return (0); 22057c478bd9Sstevel@tonic-gate } 22067c478bd9Sstevel@tonic-gate 22077c478bd9Sstevel@tonic-gate int 22087c478bd9Sstevel@tonic-gate ldi_get_otyp(ldi_handle_t lh, int *otyp) 22097c478bd9Sstevel@tonic-gate { 22107c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 22117c478bd9Sstevel@tonic-gate 22127c478bd9Sstevel@tonic-gate if ((lh == NULL) || (otyp == NULL)) 22137c478bd9Sstevel@tonic-gate return (EINVAL); 22147c478bd9Sstevel@tonic-gate 22157c478bd9Sstevel@tonic-gate *otyp = VTYP_TO_OTYP(handlep->lh_vp->v_type); 22167c478bd9Sstevel@tonic-gate return (0); 22177c478bd9Sstevel@tonic-gate } 22187c478bd9Sstevel@tonic-gate 22197c478bd9Sstevel@tonic-gate int 22207c478bd9Sstevel@tonic-gate ldi_get_devid(ldi_handle_t lh, ddi_devid_t *devid) 22217c478bd9Sstevel@tonic-gate { 22227c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 22237c478bd9Sstevel@tonic-gate int ret; 22247c478bd9Sstevel@tonic-gate dev_t dev; 22257c478bd9Sstevel@tonic-gate 22267c478bd9Sstevel@tonic-gate if ((lh == NULL) || (devid == NULL)) 22277c478bd9Sstevel@tonic-gate return (EINVAL); 22287c478bd9Sstevel@tonic-gate 22297c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 22307c478bd9Sstevel@tonic-gate 22317c478bd9Sstevel@tonic-gate ret = ddi_lyr_get_devid(dev, devid); 22327c478bd9Sstevel@tonic-gate if (ret != DDI_SUCCESS) 22337c478bd9Sstevel@tonic-gate return (ENOTSUP); 22347c478bd9Sstevel@tonic-gate 22357c478bd9Sstevel@tonic-gate return (0); 22367c478bd9Sstevel@tonic-gate } 22377c478bd9Sstevel@tonic-gate 22387c478bd9Sstevel@tonic-gate int 22397c478bd9Sstevel@tonic-gate ldi_get_minor_name(ldi_handle_t lh, char **minor_name) 22407c478bd9Sstevel@tonic-gate { 22417c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 22427c478bd9Sstevel@tonic-gate int ret, otyp; 22437c478bd9Sstevel@tonic-gate dev_t dev; 22447c478bd9Sstevel@tonic-gate 22457c478bd9Sstevel@tonic-gate if ((lh == NULL) || (minor_name == NULL)) 22467c478bd9Sstevel@tonic-gate return (EINVAL); 22477c478bd9Sstevel@tonic-gate 22487c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 22497c478bd9Sstevel@tonic-gate otyp = VTYP_TO_OTYP(handlep->lh_vp->v_type); 22507c478bd9Sstevel@tonic-gate 22517c478bd9Sstevel@tonic-gate ret = ddi_lyr_get_minor_name(dev, OTYP_TO_STYP(otyp), minor_name); 22527c478bd9Sstevel@tonic-gate if (ret != DDI_SUCCESS) 22537c478bd9Sstevel@tonic-gate return (ENOTSUP); 22547c478bd9Sstevel@tonic-gate 22557c478bd9Sstevel@tonic-gate return (0); 22567c478bd9Sstevel@tonic-gate } 22577c478bd9Sstevel@tonic-gate 22587c478bd9Sstevel@tonic-gate int 22597c478bd9Sstevel@tonic-gate ldi_prop_lookup_int_array(ldi_handle_t lh, 22607c478bd9Sstevel@tonic-gate uint_t flags, char *name, int **data, uint_t *nelements) 22617c478bd9Sstevel@tonic-gate { 22627c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 22637c478bd9Sstevel@tonic-gate dev_info_t *dip; 22647c478bd9Sstevel@tonic-gate dev_t dev; 22657c478bd9Sstevel@tonic-gate int res; 22667c478bd9Sstevel@tonic-gate struct snode *csp; 22677c478bd9Sstevel@tonic-gate 22687c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 22697c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 22707c478bd9Sstevel@tonic-gate 22717c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 22727c478bd9Sstevel@tonic-gate 22737c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 22747c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 22757c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 22767c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 22777c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 22787c478bd9Sstevel@tonic-gate if (dip == NULL) 22797c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 22807c478bd9Sstevel@tonic-gate 22817c478bd9Sstevel@tonic-gate if (dip == NULL) { 22827c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 22837c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 22847c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 22857c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 22867c478bd9Sstevel@tonic-gate } 22877c478bd9Sstevel@tonic-gate 22887c478bd9Sstevel@tonic-gate if (dip != NULL) { 22897c478bd9Sstevel@tonic-gate int *prop_val, prop_len; 22907c478bd9Sstevel@tonic-gate 22917c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 22927c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, sizeof (int)); 22937c478bd9Sstevel@tonic-gate 22947c478bd9Sstevel@tonic-gate /* if we got it then return it */ 22957c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 22967c478bd9Sstevel@tonic-gate *nelements = prop_len / sizeof (int); 22977c478bd9Sstevel@tonic-gate *data = prop_val; 22987c478bd9Sstevel@tonic-gate 22997c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 23007c478bd9Sstevel@tonic-gate return (res); 23017c478bd9Sstevel@tonic-gate } 23027c478bd9Sstevel@tonic-gate } 23037c478bd9Sstevel@tonic-gate 23047c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 23057c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_int_array(dev, dip, flags, 23067c478bd9Sstevel@tonic-gate name, data, nelements); 23077c478bd9Sstevel@tonic-gate 23087c478bd9Sstevel@tonic-gate if (dip != NULL) 23097c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 23107c478bd9Sstevel@tonic-gate 23117c478bd9Sstevel@tonic-gate return (res); 23127c478bd9Sstevel@tonic-gate } 23137c478bd9Sstevel@tonic-gate 23147c478bd9Sstevel@tonic-gate int 23157c478bd9Sstevel@tonic-gate ldi_prop_lookup_int64_array(ldi_handle_t lh, 23167c478bd9Sstevel@tonic-gate uint_t flags, char *name, int64_t **data, uint_t *nelements) 23177c478bd9Sstevel@tonic-gate { 23187c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 23197c478bd9Sstevel@tonic-gate dev_info_t *dip; 23207c478bd9Sstevel@tonic-gate dev_t dev; 23217c478bd9Sstevel@tonic-gate int res; 23227c478bd9Sstevel@tonic-gate struct snode *csp; 23237c478bd9Sstevel@tonic-gate 23247c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 23257c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 23267c478bd9Sstevel@tonic-gate 23277c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 23287c478bd9Sstevel@tonic-gate 23297c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 23307c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 23317c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 23327c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 23337c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 23347c478bd9Sstevel@tonic-gate if (dip == NULL) 23357c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 23367c478bd9Sstevel@tonic-gate 23377c478bd9Sstevel@tonic-gate if (dip == NULL) { 23387c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 23397c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 23407c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 23417c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 23427c478bd9Sstevel@tonic-gate } 23437c478bd9Sstevel@tonic-gate 23447c478bd9Sstevel@tonic-gate if (dip != NULL) { 23457c478bd9Sstevel@tonic-gate int64_t *prop_val; 23467c478bd9Sstevel@tonic-gate int prop_len; 23477c478bd9Sstevel@tonic-gate 23487c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 23497c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, sizeof (int64_t)); 23507c478bd9Sstevel@tonic-gate 23517c478bd9Sstevel@tonic-gate /* if we got it then return it */ 23527c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 23537c478bd9Sstevel@tonic-gate *nelements = prop_len / sizeof (int64_t); 23547c478bd9Sstevel@tonic-gate *data = prop_val; 23557c478bd9Sstevel@tonic-gate 23567c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 23577c478bd9Sstevel@tonic-gate return (res); 23587c478bd9Sstevel@tonic-gate } 23597c478bd9Sstevel@tonic-gate } 23607c478bd9Sstevel@tonic-gate 23617c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 23627c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_int64_array(dev, dip, flags, 23637c478bd9Sstevel@tonic-gate name, data, nelements); 23647c478bd9Sstevel@tonic-gate 23657c478bd9Sstevel@tonic-gate if (dip != NULL) 23667c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 23677c478bd9Sstevel@tonic-gate 23687c478bd9Sstevel@tonic-gate return (res); 23697c478bd9Sstevel@tonic-gate } 23707c478bd9Sstevel@tonic-gate 23717c478bd9Sstevel@tonic-gate int 23727c478bd9Sstevel@tonic-gate ldi_prop_lookup_string_array(ldi_handle_t lh, 23737c478bd9Sstevel@tonic-gate uint_t flags, char *name, char ***data, uint_t *nelements) 23747c478bd9Sstevel@tonic-gate { 23757c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 23767c478bd9Sstevel@tonic-gate dev_info_t *dip; 23777c478bd9Sstevel@tonic-gate dev_t dev; 23787c478bd9Sstevel@tonic-gate int res; 23797c478bd9Sstevel@tonic-gate struct snode *csp; 23807c478bd9Sstevel@tonic-gate 23817c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 23827c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 23837c478bd9Sstevel@tonic-gate 23847c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 23857c478bd9Sstevel@tonic-gate 23867c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 23877c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 23887c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 23897c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 23907c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 23917c478bd9Sstevel@tonic-gate if (dip == NULL) 23927c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 23937c478bd9Sstevel@tonic-gate 23947c478bd9Sstevel@tonic-gate if (dip == NULL) { 23957c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 23967c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 23977c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 23987c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 23997c478bd9Sstevel@tonic-gate } 24007c478bd9Sstevel@tonic-gate 24017c478bd9Sstevel@tonic-gate if (dip != NULL) { 24027c478bd9Sstevel@tonic-gate char *prop_val; 24037c478bd9Sstevel@tonic-gate int prop_len; 24047c478bd9Sstevel@tonic-gate 24057c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 24067c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, 0); 24077c478bd9Sstevel@tonic-gate 24087c478bd9Sstevel@tonic-gate /* if we got it then return it */ 24097c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 24107c478bd9Sstevel@tonic-gate char **str_array; 24117c478bd9Sstevel@tonic-gate int nelem; 24127c478bd9Sstevel@tonic-gate 24137c478bd9Sstevel@tonic-gate /* 24147c478bd9Sstevel@tonic-gate * pack the returned string array into the format 24157c478bd9Sstevel@tonic-gate * our callers expect 24167c478bd9Sstevel@tonic-gate */ 24177c478bd9Sstevel@tonic-gate if (i_pack_string_array(prop_val, prop_len, 2418184cd04cScth &str_array, &nelem) == 0) { 24197c478bd9Sstevel@tonic-gate 24207c478bd9Sstevel@tonic-gate *data = str_array; 24217c478bd9Sstevel@tonic-gate *nelements = nelem; 24227c478bd9Sstevel@tonic-gate 24237c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 24247c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 24257c478bd9Sstevel@tonic-gate return (res); 24267c478bd9Sstevel@tonic-gate } 24277c478bd9Sstevel@tonic-gate 24287c478bd9Sstevel@tonic-gate /* 24297c478bd9Sstevel@tonic-gate * the format of the returned property must have 24307c478bd9Sstevel@tonic-gate * been bad so throw it out 24317c478bd9Sstevel@tonic-gate */ 24327c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 24337c478bd9Sstevel@tonic-gate } 24347c478bd9Sstevel@tonic-gate } 24357c478bd9Sstevel@tonic-gate 24367c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 24377c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_string_array(dev, dip, flags, 24387c478bd9Sstevel@tonic-gate name, data, nelements); 24397c478bd9Sstevel@tonic-gate 24407c478bd9Sstevel@tonic-gate if (dip != NULL) 24417c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 24427c478bd9Sstevel@tonic-gate 24437c478bd9Sstevel@tonic-gate return (res); 24447c478bd9Sstevel@tonic-gate } 24457c478bd9Sstevel@tonic-gate 24467c478bd9Sstevel@tonic-gate int 24477c478bd9Sstevel@tonic-gate ldi_prop_lookup_string(ldi_handle_t lh, 24487c478bd9Sstevel@tonic-gate uint_t flags, char *name, char **data) 24497c478bd9Sstevel@tonic-gate { 24507c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 24517c478bd9Sstevel@tonic-gate dev_info_t *dip; 24527c478bd9Sstevel@tonic-gate dev_t dev; 24537c478bd9Sstevel@tonic-gate int res; 24547c478bd9Sstevel@tonic-gate struct snode *csp; 24557c478bd9Sstevel@tonic-gate 24567c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 24577c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 24587c478bd9Sstevel@tonic-gate 24597c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 24607c478bd9Sstevel@tonic-gate 24617c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 24627c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 24637c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 24647c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 24657c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 24667c478bd9Sstevel@tonic-gate if (dip == NULL) 24677c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 24687c478bd9Sstevel@tonic-gate 24697c478bd9Sstevel@tonic-gate if (dip == NULL) { 24707c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 24717c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 24727c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 24737c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 24747c478bd9Sstevel@tonic-gate } 24757c478bd9Sstevel@tonic-gate 24767c478bd9Sstevel@tonic-gate if (dip != NULL) { 24777c478bd9Sstevel@tonic-gate char *prop_val; 24787c478bd9Sstevel@tonic-gate int prop_len; 24797c478bd9Sstevel@tonic-gate 24807c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 24817c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, 0); 24827c478bd9Sstevel@tonic-gate 24837c478bd9Sstevel@tonic-gate /* if we got it then return it */ 24847c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 24857c478bd9Sstevel@tonic-gate /* 24867c478bd9Sstevel@tonic-gate * sanity check the vaule returned. 24877c478bd9Sstevel@tonic-gate */ 24887c478bd9Sstevel@tonic-gate if (i_check_string(prop_val, prop_len)) { 24897c478bd9Sstevel@tonic-gate ddi_prop_free(prop_val); 24907c478bd9Sstevel@tonic-gate } else { 24917c478bd9Sstevel@tonic-gate *data = prop_val; 24927c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 24937c478bd9Sstevel@tonic-gate return (res); 24947c478bd9Sstevel@tonic-gate } 24957c478bd9Sstevel@tonic-gate } 24967c478bd9Sstevel@tonic-gate } 24977c478bd9Sstevel@tonic-gate 24987c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 24997c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_string(dev, dip, flags, name, data); 25007c478bd9Sstevel@tonic-gate 25017c478bd9Sstevel@tonic-gate if (dip != NULL) 25027c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 25037c478bd9Sstevel@tonic-gate 25047c478bd9Sstevel@tonic-gate #ifdef DEBUG 25057c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 25067c478bd9Sstevel@tonic-gate /* 25077c478bd9Sstevel@tonic-gate * keep ourselves honest 25087c478bd9Sstevel@tonic-gate * make sure the framework returns strings in the 25097c478bd9Sstevel@tonic-gate * same format as we're demanding from drivers. 25107c478bd9Sstevel@tonic-gate */ 25117c478bd9Sstevel@tonic-gate struct prop_driver_data *pdd; 25127c478bd9Sstevel@tonic-gate int pdd_prop_size; 25137c478bd9Sstevel@tonic-gate 25147c478bd9Sstevel@tonic-gate pdd = ((struct prop_driver_data *)(*data)) - 1; 25157c478bd9Sstevel@tonic-gate pdd_prop_size = pdd->pdd_size - 25167c478bd9Sstevel@tonic-gate sizeof (struct prop_driver_data); 25177c478bd9Sstevel@tonic-gate ASSERT(i_check_string(*data, pdd_prop_size) == 0); 25187c478bd9Sstevel@tonic-gate } 25197c478bd9Sstevel@tonic-gate #endif /* DEBUG */ 25207c478bd9Sstevel@tonic-gate 25217c478bd9Sstevel@tonic-gate return (res); 25227c478bd9Sstevel@tonic-gate } 25237c478bd9Sstevel@tonic-gate 25247c478bd9Sstevel@tonic-gate int 25257c478bd9Sstevel@tonic-gate ldi_prop_lookup_byte_array(ldi_handle_t lh, 25267c478bd9Sstevel@tonic-gate uint_t flags, char *name, uchar_t **data, uint_t *nelements) 25277c478bd9Sstevel@tonic-gate { 25287c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 25297c478bd9Sstevel@tonic-gate dev_info_t *dip; 25307c478bd9Sstevel@tonic-gate dev_t dev; 25317c478bd9Sstevel@tonic-gate int res; 25327c478bd9Sstevel@tonic-gate struct snode *csp; 25337c478bd9Sstevel@tonic-gate 25347c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 25357c478bd9Sstevel@tonic-gate return (DDI_PROP_INVAL_ARG); 25367c478bd9Sstevel@tonic-gate 25377c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 25387c478bd9Sstevel@tonic-gate 25397c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 25407c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 25417c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 25427c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 25437c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 25447c478bd9Sstevel@tonic-gate if (dip == NULL) 25457c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 25467c478bd9Sstevel@tonic-gate 25477c478bd9Sstevel@tonic-gate if (dip == NULL) { 25487c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 25497c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 25507c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 25517c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 25527c478bd9Sstevel@tonic-gate } 25537c478bd9Sstevel@tonic-gate 25547c478bd9Sstevel@tonic-gate if (dip != NULL) { 25557c478bd9Sstevel@tonic-gate uchar_t *prop_val; 25567c478bd9Sstevel@tonic-gate int prop_len; 25577c478bd9Sstevel@tonic-gate 25587c478bd9Sstevel@tonic-gate res = i_ldi_prop_op_typed(dev, dip, flags, name, 25597c478bd9Sstevel@tonic-gate (caddr_t *)&prop_val, &prop_len, sizeof (uchar_t)); 25607c478bd9Sstevel@tonic-gate 25617c478bd9Sstevel@tonic-gate /* if we got it then return it */ 25627c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 25637c478bd9Sstevel@tonic-gate *nelements = prop_len / sizeof (uchar_t); 25647c478bd9Sstevel@tonic-gate *data = prop_val; 25657c478bd9Sstevel@tonic-gate 25667c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 25677c478bd9Sstevel@tonic-gate return (res); 25687c478bd9Sstevel@tonic-gate } 25697c478bd9Sstevel@tonic-gate } 25707c478bd9Sstevel@tonic-gate 25717c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 25727c478bd9Sstevel@tonic-gate res = ddi_prop_lookup_byte_array(dev, dip, flags, 25737c478bd9Sstevel@tonic-gate name, data, nelements); 25747c478bd9Sstevel@tonic-gate 25757c478bd9Sstevel@tonic-gate if (dip != NULL) 25767c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 25777c478bd9Sstevel@tonic-gate 25787c478bd9Sstevel@tonic-gate return (res); 25797c478bd9Sstevel@tonic-gate } 25807c478bd9Sstevel@tonic-gate 25817c478bd9Sstevel@tonic-gate int 25827c478bd9Sstevel@tonic-gate ldi_prop_get_int(ldi_handle_t lh, 25837c478bd9Sstevel@tonic-gate uint_t flags, char *name, int defvalue) 25847c478bd9Sstevel@tonic-gate { 25857c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 25867c478bd9Sstevel@tonic-gate dev_info_t *dip; 25877c478bd9Sstevel@tonic-gate dev_t dev; 25887c478bd9Sstevel@tonic-gate int res; 25897c478bd9Sstevel@tonic-gate struct snode *csp; 25907c478bd9Sstevel@tonic-gate 25917c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 25927c478bd9Sstevel@tonic-gate return (defvalue); 25937c478bd9Sstevel@tonic-gate 25947c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 25957c478bd9Sstevel@tonic-gate 25967c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 25977c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 25987c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 25997c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 26007c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 26017c478bd9Sstevel@tonic-gate if (dip == NULL) 26027c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 26037c478bd9Sstevel@tonic-gate 26047c478bd9Sstevel@tonic-gate if (dip == NULL) { 26057c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 26067c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 26077c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 26087c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 26097c478bd9Sstevel@tonic-gate } 26107c478bd9Sstevel@tonic-gate 26117c478bd9Sstevel@tonic-gate if (dip != NULL) { 26127c478bd9Sstevel@tonic-gate int prop_val; 26137c478bd9Sstevel@tonic-gate int prop_len; 26147c478bd9Sstevel@tonic-gate 26157c478bd9Sstevel@tonic-gate /* 26167c478bd9Sstevel@tonic-gate * first call the drivers prop_op interface to allow it 26177c478bd9Sstevel@tonic-gate * it to override default property values. 26187c478bd9Sstevel@tonic-gate */ 26197c478bd9Sstevel@tonic-gate prop_len = sizeof (int); 26207c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN_AND_VAL_BUF, 26217c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, 26227c478bd9Sstevel@tonic-gate (caddr_t)&prop_val, &prop_len); 26237c478bd9Sstevel@tonic-gate 26247c478bd9Sstevel@tonic-gate /* if we got it then return it */ 26257c478bd9Sstevel@tonic-gate if ((res == DDI_PROP_SUCCESS) && 26267c478bd9Sstevel@tonic-gate (prop_len == sizeof (int))) { 26277c478bd9Sstevel@tonic-gate res = prop_val; 26287c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 26297c478bd9Sstevel@tonic-gate return (res); 26307c478bd9Sstevel@tonic-gate } 26317c478bd9Sstevel@tonic-gate } 26327c478bd9Sstevel@tonic-gate 26337c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 26347c478bd9Sstevel@tonic-gate res = ddi_prop_get_int(dev, dip, flags, name, defvalue); 26357c478bd9Sstevel@tonic-gate 26367c478bd9Sstevel@tonic-gate if (dip != NULL) 26377c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 26387c478bd9Sstevel@tonic-gate 26397c478bd9Sstevel@tonic-gate return (res); 26407c478bd9Sstevel@tonic-gate } 26417c478bd9Sstevel@tonic-gate 26427c478bd9Sstevel@tonic-gate int64_t 26437c478bd9Sstevel@tonic-gate ldi_prop_get_int64(ldi_handle_t lh, 26447c478bd9Sstevel@tonic-gate uint_t flags, char *name, int64_t defvalue) 26457c478bd9Sstevel@tonic-gate { 26467c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 26477c478bd9Sstevel@tonic-gate dev_info_t *dip; 26487c478bd9Sstevel@tonic-gate dev_t dev; 26497c478bd9Sstevel@tonic-gate int64_t res; 26507c478bd9Sstevel@tonic-gate struct snode *csp; 26517c478bd9Sstevel@tonic-gate 26527c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 26537c478bd9Sstevel@tonic-gate return (defvalue); 26547c478bd9Sstevel@tonic-gate 26557c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 26567c478bd9Sstevel@tonic-gate 26577c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 26587c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 26597c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 26607c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 26617c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 26627c478bd9Sstevel@tonic-gate if (dip == NULL) 26637c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 26647c478bd9Sstevel@tonic-gate 26657c478bd9Sstevel@tonic-gate if (dip == NULL) { 26667c478bd9Sstevel@tonic-gate flags |= DDI_UNBND_DLPI2; 26677c478bd9Sstevel@tonic-gate } else if (flags & LDI_DEV_T_ANY) { 26687c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 26697c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 26707c478bd9Sstevel@tonic-gate } 26717c478bd9Sstevel@tonic-gate 26727c478bd9Sstevel@tonic-gate if (dip != NULL) { 26737c478bd9Sstevel@tonic-gate int64_t prop_val; 26747c478bd9Sstevel@tonic-gate int prop_len; 26757c478bd9Sstevel@tonic-gate 26767c478bd9Sstevel@tonic-gate /* 26777c478bd9Sstevel@tonic-gate * first call the drivers prop_op interface to allow it 26787c478bd9Sstevel@tonic-gate * it to override default property values. 26797c478bd9Sstevel@tonic-gate */ 26807c478bd9Sstevel@tonic-gate prop_len = sizeof (int64_t); 26817c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN_AND_VAL_BUF, 26827c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, 26837c478bd9Sstevel@tonic-gate (caddr_t)&prop_val, &prop_len); 26847c478bd9Sstevel@tonic-gate 26857c478bd9Sstevel@tonic-gate /* if we got it then return it */ 26867c478bd9Sstevel@tonic-gate if ((res == DDI_PROP_SUCCESS) && 26877c478bd9Sstevel@tonic-gate (prop_len == sizeof (int64_t))) { 26887c478bd9Sstevel@tonic-gate res = prop_val; 26897c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 26907c478bd9Sstevel@tonic-gate return (res); 26917c478bd9Sstevel@tonic-gate } 26927c478bd9Sstevel@tonic-gate } 26937c478bd9Sstevel@tonic-gate 26947c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 26957c478bd9Sstevel@tonic-gate res = ddi_prop_get_int64(dev, dip, flags, name, defvalue); 26967c478bd9Sstevel@tonic-gate 26977c478bd9Sstevel@tonic-gate if (dip != NULL) 26987c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 26997c478bd9Sstevel@tonic-gate 27007c478bd9Sstevel@tonic-gate return (res); 27017c478bd9Sstevel@tonic-gate } 27027c478bd9Sstevel@tonic-gate 27037c478bd9Sstevel@tonic-gate int 27047c478bd9Sstevel@tonic-gate ldi_prop_exists(ldi_handle_t lh, uint_t flags, char *name) 27057c478bd9Sstevel@tonic-gate { 27067c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 2707184cd04cScth dev_info_t *dip; 2708184cd04cScth dev_t dev; 27097c478bd9Sstevel@tonic-gate int res, prop_len; 27107c478bd9Sstevel@tonic-gate struct snode *csp; 27117c478bd9Sstevel@tonic-gate 27127c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || (strlen(name) == 0)) 27137c478bd9Sstevel@tonic-gate return (0); 27147c478bd9Sstevel@tonic-gate 27157c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 27167c478bd9Sstevel@tonic-gate 27177c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 27187c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 27197c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 27207c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 27217c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 27227c478bd9Sstevel@tonic-gate if (dip == NULL) 27237c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 27247c478bd9Sstevel@tonic-gate 27257c478bd9Sstevel@tonic-gate /* if NULL dip, prop does NOT exist */ 27267c478bd9Sstevel@tonic-gate if (dip == NULL) 27277c478bd9Sstevel@tonic-gate return (0); 27287c478bd9Sstevel@tonic-gate 27297c478bd9Sstevel@tonic-gate if (flags & LDI_DEV_T_ANY) { 27307c478bd9Sstevel@tonic-gate flags &= ~LDI_DEV_T_ANY; 27317c478bd9Sstevel@tonic-gate dev = DDI_DEV_T_ANY; 27327c478bd9Sstevel@tonic-gate } 27337c478bd9Sstevel@tonic-gate 27347c478bd9Sstevel@tonic-gate /* 27357c478bd9Sstevel@tonic-gate * first call the drivers prop_op interface to allow it 27367c478bd9Sstevel@tonic-gate * it to override default property values. 27377c478bd9Sstevel@tonic-gate */ 27387c478bd9Sstevel@tonic-gate res = i_ldi_prop_op(dev, dip, PROP_LEN, 27397c478bd9Sstevel@tonic-gate flags | DDI_PROP_DYNAMIC, name, NULL, &prop_len); 27407c478bd9Sstevel@tonic-gate 27417c478bd9Sstevel@tonic-gate if (res == DDI_PROP_SUCCESS) { 27427c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 27437c478bd9Sstevel@tonic-gate return (1); 27447c478bd9Sstevel@tonic-gate } 27457c478bd9Sstevel@tonic-gate 27467c478bd9Sstevel@tonic-gate /* call the normal property interfaces */ 27477c478bd9Sstevel@tonic-gate res = ddi_prop_exists(dev, dip, flags, name); 27487c478bd9Sstevel@tonic-gate 27497c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 27507c478bd9Sstevel@tonic-gate return (res); 27517c478bd9Sstevel@tonic-gate } 27527c478bd9Sstevel@tonic-gate 275325e8c5aaSvikram #ifdef LDI_OBSOLETE_EVENT 275425e8c5aaSvikram 27557c478bd9Sstevel@tonic-gate int 27567c478bd9Sstevel@tonic-gate ldi_get_eventcookie(ldi_handle_t lh, char *name, ddi_eventcookie_t *ecp) 27577c478bd9Sstevel@tonic-gate { 27587c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 27597c478bd9Sstevel@tonic-gate dev_info_t *dip; 27607c478bd9Sstevel@tonic-gate dev_t dev; 27617c478bd9Sstevel@tonic-gate int res; 27627c478bd9Sstevel@tonic-gate struct snode *csp; 27637c478bd9Sstevel@tonic-gate 27647c478bd9Sstevel@tonic-gate if ((lh == NULL) || (name == NULL) || 27657c478bd9Sstevel@tonic-gate (strlen(name) == 0) || (ecp == NULL)) { 27667c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 27677c478bd9Sstevel@tonic-gate } 27687c478bd9Sstevel@tonic-gate 27697c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 27707c478bd9Sstevel@tonic-gate 27717c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 27727c478bd9Sstevel@tonic-gate 27737c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 27747c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 27757c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 27767c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 27777c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 27787c478bd9Sstevel@tonic-gate if (dip == NULL) 27797c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 27807c478bd9Sstevel@tonic-gate 27817c478bd9Sstevel@tonic-gate if (dip == NULL) 27827c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 27837c478bd9Sstevel@tonic-gate 27847c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_NOTE, "%s: event_name=%s, " 27857c478bd9Sstevel@tonic-gate "dip=0x%p, event_cookiep=0x%p", "ldi_get_eventcookie", 27867c478bd9Sstevel@tonic-gate name, (void *)dip, (void *)ecp)); 27877c478bd9Sstevel@tonic-gate 27887c478bd9Sstevel@tonic-gate res = ddi_get_eventcookie(dip, name, ecp); 27897c478bd9Sstevel@tonic-gate 27907c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 27917c478bd9Sstevel@tonic-gate return (res); 27927c478bd9Sstevel@tonic-gate } 27937c478bd9Sstevel@tonic-gate 27947c478bd9Sstevel@tonic-gate int 27957c478bd9Sstevel@tonic-gate ldi_add_event_handler(ldi_handle_t lh, ddi_eventcookie_t ec, 27967c478bd9Sstevel@tonic-gate void (*handler)(ldi_handle_t, ddi_eventcookie_t, void *, void *), 27977c478bd9Sstevel@tonic-gate void *arg, ldi_callback_id_t *id) 27987c478bd9Sstevel@tonic-gate { 27997c478bd9Sstevel@tonic-gate struct ldi_handle *handlep = (struct ldi_handle *)lh; 28007c478bd9Sstevel@tonic-gate struct ldi_event *lep; 28017c478bd9Sstevel@tonic-gate dev_info_t *dip; 28027c478bd9Sstevel@tonic-gate dev_t dev; 28037c478bd9Sstevel@tonic-gate int res; 28047c478bd9Sstevel@tonic-gate struct snode *csp; 28057c478bd9Sstevel@tonic-gate 28067c478bd9Sstevel@tonic-gate if ((lh == NULL) || (ec == NULL) || (handler == NULL) || (id == NULL)) 28077c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 28087c478bd9Sstevel@tonic-gate 28097c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 28107c478bd9Sstevel@tonic-gate 28117c478bd9Sstevel@tonic-gate dev = handlep->lh_vp->v_rdev; 28127c478bd9Sstevel@tonic-gate 28137c478bd9Sstevel@tonic-gate csp = VTOCS(handlep->lh_vp); 28147c478bd9Sstevel@tonic-gate mutex_enter(&csp->s_lock); 28157c478bd9Sstevel@tonic-gate if ((dip = csp->s_dip) != NULL) 28167c478bd9Sstevel@tonic-gate e_ddi_hold_devi(dip); 28177c478bd9Sstevel@tonic-gate mutex_exit(&csp->s_lock); 28187c478bd9Sstevel@tonic-gate if (dip == NULL) 28197c478bd9Sstevel@tonic-gate dip = e_ddi_hold_devi_by_dev(dev, 0); 28207c478bd9Sstevel@tonic-gate 28217c478bd9Sstevel@tonic-gate if (dip == NULL) 28227c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 28237c478bd9Sstevel@tonic-gate 28247c478bd9Sstevel@tonic-gate lep = kmem_zalloc(sizeof (struct ldi_event), KM_SLEEP); 28257c478bd9Sstevel@tonic-gate lep->le_lhp = handlep; 28267c478bd9Sstevel@tonic-gate lep->le_arg = arg; 28277c478bd9Sstevel@tonic-gate lep->le_handler = handler; 28287c478bd9Sstevel@tonic-gate 28297c478bd9Sstevel@tonic-gate if ((res = ddi_add_event_handler(dip, ec, i_ldi_callback, 28307c478bd9Sstevel@tonic-gate (void *)lep, &lep->le_id)) != DDI_SUCCESS) { 28317c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_WARN, "%s: unable to add" 28327c478bd9Sstevel@tonic-gate "event callback", "ldi_add_event_handler")); 28337c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 28347c478bd9Sstevel@tonic-gate kmem_free(lep, sizeof (struct ldi_event)); 28357c478bd9Sstevel@tonic-gate return (res); 28367c478bd9Sstevel@tonic-gate } 28377c478bd9Sstevel@tonic-gate 28387c478bd9Sstevel@tonic-gate *id = (ldi_callback_id_t)lep; 28397c478bd9Sstevel@tonic-gate 28407c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_NOTE, "%s: dip=0x%p, event=0x%p, " 28417c478bd9Sstevel@tonic-gate "ldi_eventp=0x%p, cb_id=0x%p", "ldi_add_event_handler", 28427c478bd9Sstevel@tonic-gate (void *)dip, (void *)ec, (void *)lep, (void *)id)); 28437c478bd9Sstevel@tonic-gate 28447c478bd9Sstevel@tonic-gate handle_event_add(lep); 28457c478bd9Sstevel@tonic-gate ddi_release_devi(dip); 28467c478bd9Sstevel@tonic-gate return (res); 28477c478bd9Sstevel@tonic-gate } 28487c478bd9Sstevel@tonic-gate 28497c478bd9Sstevel@tonic-gate int 28507c478bd9Sstevel@tonic-gate ldi_remove_event_handler(ldi_handle_t lh, ldi_callback_id_t id) 28517c478bd9Sstevel@tonic-gate { 28527c478bd9Sstevel@tonic-gate ldi_event_t *lep = (ldi_event_t *)id; 28537c478bd9Sstevel@tonic-gate int res; 28547c478bd9Sstevel@tonic-gate 28557c478bd9Sstevel@tonic-gate if ((lh == NULL) || (id == NULL)) 28567c478bd9Sstevel@tonic-gate return (DDI_FAILURE); 28577c478bd9Sstevel@tonic-gate 28587c478bd9Sstevel@tonic-gate ASSERT(!servicing_interrupt()); 28597c478bd9Sstevel@tonic-gate 28607c478bd9Sstevel@tonic-gate if ((res = ddi_remove_event_handler(lep->le_id)) 28617c478bd9Sstevel@tonic-gate != DDI_SUCCESS) { 28627c478bd9Sstevel@tonic-gate LDI_EVENTCB((CE_WARN, "%s: unable to remove " 28637c478bd9Sstevel@tonic-gate "event callback", "ldi_remove_event_handler")); 28647c478bd9Sstevel@tonic-gate return (res); 28657c478bd9Sstevel@tonic-gate } 28667c478bd9Sstevel@tonic-gate 28677c478bd9Sstevel@tonic-gate handle_event_remove(lep); 28687c478bd9Sstevel@tonic-gate kmem_free(lep, sizeof (struct ldi_event)); 28697c478bd9Sstevel@tonic-gate return (res); 28707c478bd9Sstevel@tonic-gate } 287125e8c5aaSvikram 287225e8c5aaSvikram #endif 287325e8c5aaSvikram 287425e8c5aaSvikram /* 287525e8c5aaSvikram * Here are some definitions of terms used in the following LDI events 287625e8c5aaSvikram * code: 287725e8c5aaSvikram * 287825e8c5aaSvikram * "LDI events" AKA "native events": These are events defined by the 287925e8c5aaSvikram * "new" LDI event framework. These events are serviced by the LDI event 288025e8c5aaSvikram * framework itself and thus are native to it. 288125e8c5aaSvikram * 288225e8c5aaSvikram * "LDI contract events": These are contract events that correspond to the 288325e8c5aaSvikram * LDI events. This mapping of LDI events to contract events is defined by 288425e8c5aaSvikram * the ldi_ev_cookies[] array above. 288525e8c5aaSvikram * 288625e8c5aaSvikram * NDI events: These are events which are serviced by the NDI event subsystem. 288725e8c5aaSvikram * LDI subsystem just provides a thin wrapper around the NDI event interfaces 2888da6c28aaSamw * These events are therefore *not* native events. 288925e8c5aaSvikram */ 289025e8c5aaSvikram 289125e8c5aaSvikram static int 289225e8c5aaSvikram ldi_native_event(const char *evname) 289325e8c5aaSvikram { 289425e8c5aaSvikram int i; 289525e8c5aaSvikram 289625e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_native_event: entered: ev=%s", evname)); 289725e8c5aaSvikram 289825e8c5aaSvikram for (i = 0; ldi_ev_cookies[i].ck_evname != NULL; i++) { 289925e8c5aaSvikram if (strcmp(ldi_ev_cookies[i].ck_evname, evname) == 0) 290025e8c5aaSvikram return (1); 290125e8c5aaSvikram } 290225e8c5aaSvikram 290325e8c5aaSvikram return (0); 290425e8c5aaSvikram } 290525e8c5aaSvikram 290625e8c5aaSvikram static uint_t 290725e8c5aaSvikram ldi_ev_sync_event(const char *evname) 290825e8c5aaSvikram { 290925e8c5aaSvikram int i; 291025e8c5aaSvikram 291125e8c5aaSvikram ASSERT(ldi_native_event(evname)); 291225e8c5aaSvikram 291325e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_ev_sync_event: entered: %s", evname)); 291425e8c5aaSvikram 291525e8c5aaSvikram for (i = 0; ldi_ev_cookies[i].ck_evname != NULL; i++) { 291625e8c5aaSvikram if (strcmp(ldi_ev_cookies[i].ck_evname, evname) == 0) 291725e8c5aaSvikram return (ldi_ev_cookies[i].ck_sync); 291825e8c5aaSvikram } 291925e8c5aaSvikram 292025e8c5aaSvikram /* 292125e8c5aaSvikram * This should never happen until non-contract based 292225e8c5aaSvikram * LDI events are introduced. If that happens, we will 292325e8c5aaSvikram * use a "special" token to indicate that there are no 292425e8c5aaSvikram * contracts corresponding to this LDI event. 292525e8c5aaSvikram */ 292625e8c5aaSvikram cmn_err(CE_PANIC, "Unknown LDI event: %s", evname); 292725e8c5aaSvikram 292825e8c5aaSvikram return (0); 292925e8c5aaSvikram } 293025e8c5aaSvikram 293125e8c5aaSvikram static uint_t 293225e8c5aaSvikram ldi_contract_event(const char *evname) 293325e8c5aaSvikram { 293425e8c5aaSvikram int i; 293525e8c5aaSvikram 293625e8c5aaSvikram ASSERT(ldi_native_event(evname)); 293725e8c5aaSvikram 293825e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_contract_event: entered: %s", evname)); 293925e8c5aaSvikram 294025e8c5aaSvikram for (i = 0; ldi_ev_cookies[i].ck_evname != NULL; i++) { 294125e8c5aaSvikram if (strcmp(ldi_ev_cookies[i].ck_evname, evname) == 0) 294225e8c5aaSvikram return (ldi_ev_cookies[i].ck_ctype); 294325e8c5aaSvikram } 294425e8c5aaSvikram 294525e8c5aaSvikram /* 294625e8c5aaSvikram * This should never happen until non-contract based 294725e8c5aaSvikram * LDI events are introduced. If that happens, we will 294825e8c5aaSvikram * use a "special" token to indicate that there are no 294925e8c5aaSvikram * contracts corresponding to this LDI event. 295025e8c5aaSvikram */ 295125e8c5aaSvikram cmn_err(CE_PANIC, "Unknown LDI event: %s", evname); 295225e8c5aaSvikram 295325e8c5aaSvikram return (0); 295425e8c5aaSvikram } 295525e8c5aaSvikram 295625e8c5aaSvikram char * 295725e8c5aaSvikram ldi_ev_get_type(ldi_ev_cookie_t cookie) 295825e8c5aaSvikram { 295925e8c5aaSvikram int i; 296025e8c5aaSvikram struct ldi_ev_cookie *cookie_impl = (struct ldi_ev_cookie *)cookie; 296125e8c5aaSvikram 296225e8c5aaSvikram for (i = 0; ldi_ev_cookies[i].ck_evname != NULL; i++) { 296325e8c5aaSvikram if (&ldi_ev_cookies[i] == cookie_impl) { 296425e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_ev_get_type: LDI: %s", 296525e8c5aaSvikram ldi_ev_cookies[i].ck_evname)); 296625e8c5aaSvikram return (ldi_ev_cookies[i].ck_evname); 296725e8c5aaSvikram } 296825e8c5aaSvikram } 296925e8c5aaSvikram 297025e8c5aaSvikram /* 297125e8c5aaSvikram * Not an LDI native event. Must be NDI event service. 297225e8c5aaSvikram * Just return a generic string 297325e8c5aaSvikram */ 297425e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_ev_get_type: is NDI")); 297525e8c5aaSvikram return (NDI_EVENT_SERVICE); 297625e8c5aaSvikram } 297725e8c5aaSvikram 297825e8c5aaSvikram static int 297925e8c5aaSvikram ldi_native_cookie(ldi_ev_cookie_t cookie) 298025e8c5aaSvikram { 298125e8c5aaSvikram int i; 298225e8c5aaSvikram struct ldi_ev_cookie *cookie_impl = (struct ldi_ev_cookie *)cookie; 298325e8c5aaSvikram 298425e8c5aaSvikram for (i = 0; ldi_ev_cookies[i].ck_evname != NULL; i++) { 298525e8c5aaSvikram if (&ldi_ev_cookies[i] == cookie_impl) { 298625e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_native_cookie: native LDI")); 298725e8c5aaSvikram return (1); 298825e8c5aaSvikram } 298925e8c5aaSvikram } 299025e8c5aaSvikram 299125e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_native_cookie: is NDI")); 299225e8c5aaSvikram return (0); 299325e8c5aaSvikram } 299425e8c5aaSvikram 299525e8c5aaSvikram static ldi_ev_cookie_t 299625e8c5aaSvikram ldi_get_native_cookie(const char *evname) 299725e8c5aaSvikram { 299825e8c5aaSvikram int i; 299925e8c5aaSvikram 300025e8c5aaSvikram for (i = 0; ldi_ev_cookies[i].ck_evname != NULL; i++) { 300125e8c5aaSvikram if (strcmp(ldi_ev_cookies[i].ck_evname, evname) == 0) { 300225e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_get_native_cookie: found")); 300325e8c5aaSvikram return ((ldi_ev_cookie_t)&ldi_ev_cookies[i]); 300425e8c5aaSvikram } 300525e8c5aaSvikram } 300625e8c5aaSvikram 300725e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_get_native_cookie: NOT found")); 300825e8c5aaSvikram return (NULL); 300925e8c5aaSvikram } 301025e8c5aaSvikram 301125e8c5aaSvikram /* 301225e8c5aaSvikram * ldi_ev_lock() needs to be recursive, since layered drivers may call 301325e8c5aaSvikram * other LDI interfaces (such as ldi_close() from within the context of 301425e8c5aaSvikram * a notify callback. Since the notify callback is called with the 301525e8c5aaSvikram * ldi_ev_lock() held and ldi_close() also grabs ldi_ev_lock, the lock needs 301625e8c5aaSvikram * to be recursive. 301725e8c5aaSvikram */ 301825e8c5aaSvikram static void 301925e8c5aaSvikram ldi_ev_lock(void) 302025e8c5aaSvikram { 302125e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_ev_lock: entered")); 302225e8c5aaSvikram 302325e8c5aaSvikram mutex_enter(&ldi_ev_callback_list.le_lock); 302425e8c5aaSvikram if (ldi_ev_callback_list.le_thread == curthread) { 302525e8c5aaSvikram ASSERT(ldi_ev_callback_list.le_busy >= 1); 302625e8c5aaSvikram ldi_ev_callback_list.le_busy++; 302725e8c5aaSvikram } else { 302825e8c5aaSvikram while (ldi_ev_callback_list.le_busy) 302925e8c5aaSvikram cv_wait(&ldi_ev_callback_list.le_cv, 303025e8c5aaSvikram &ldi_ev_callback_list.le_lock); 303125e8c5aaSvikram ASSERT(ldi_ev_callback_list.le_thread == NULL); 303225e8c5aaSvikram ldi_ev_callback_list.le_busy = 1; 303325e8c5aaSvikram ldi_ev_callback_list.le_thread = curthread; 303425e8c5aaSvikram } 303525e8c5aaSvikram mutex_exit(&ldi_ev_callback_list.le_lock); 303625e8c5aaSvikram 303725e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_ev_lock: exit")); 303825e8c5aaSvikram } 303925e8c5aaSvikram 304025e8c5aaSvikram static void 304125e8c5aaSvikram ldi_ev_unlock(void) 304225e8c5aaSvikram { 304325e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_ev_unlock: entered")); 304425e8c5aaSvikram mutex_enter(&ldi_ev_callback_list.le_lock); 304525e8c5aaSvikram ASSERT(ldi_ev_callback_list.le_thread == curthread); 304625e8c5aaSvikram ASSERT(ldi_ev_callback_list.le_busy >= 1); 304725e8c5aaSvikram 304825e8c5aaSvikram ldi_ev_callback_list.le_busy--; 304925e8c5aaSvikram if (ldi_ev_callback_list.le_busy == 0) { 305025e8c5aaSvikram ldi_ev_callback_list.le_thread = NULL; 305125e8c5aaSvikram cv_signal(&ldi_ev_callback_list.le_cv); 305225e8c5aaSvikram } 305325e8c5aaSvikram mutex_exit(&ldi_ev_callback_list.le_lock); 305425e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_ev_unlock: exit")); 305525e8c5aaSvikram } 305625e8c5aaSvikram 305725e8c5aaSvikram int 305825e8c5aaSvikram ldi_ev_get_cookie(ldi_handle_t lh, char *evname, ldi_ev_cookie_t *cookiep) 305925e8c5aaSvikram { 306025e8c5aaSvikram struct ldi_handle *handlep = (struct ldi_handle *)lh; 306125e8c5aaSvikram dev_info_t *dip; 306225e8c5aaSvikram dev_t dev; 306325e8c5aaSvikram int res; 306425e8c5aaSvikram struct snode *csp; 306525e8c5aaSvikram ddi_eventcookie_t ddi_cookie; 306625e8c5aaSvikram ldi_ev_cookie_t tcookie; 306725e8c5aaSvikram 306825e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_get_cookie: entered: evname=%s", 306925e8c5aaSvikram evname ? evname : "<NULL>")); 307025e8c5aaSvikram 307125e8c5aaSvikram if (lh == NULL || evname == NULL || 307225e8c5aaSvikram strlen(evname) == 0 || cookiep == NULL) { 307325e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_get_cookie: invalid args")); 307425e8c5aaSvikram return (LDI_EV_FAILURE); 307525e8c5aaSvikram } 307625e8c5aaSvikram 307725e8c5aaSvikram *cookiep = NULL; 307825e8c5aaSvikram 307925e8c5aaSvikram /* 308025e8c5aaSvikram * First check if it is a LDI native event 308125e8c5aaSvikram */ 308225e8c5aaSvikram tcookie = ldi_get_native_cookie(evname); 308325e8c5aaSvikram if (tcookie) { 308425e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_get_cookie: got native cookie")); 308525e8c5aaSvikram *cookiep = tcookie; 308625e8c5aaSvikram return (LDI_EV_SUCCESS); 308725e8c5aaSvikram } 308825e8c5aaSvikram 308925e8c5aaSvikram /* 309025e8c5aaSvikram * Not a LDI native event. Try NDI event services 309125e8c5aaSvikram */ 309225e8c5aaSvikram 309325e8c5aaSvikram dev = handlep->lh_vp->v_rdev; 309425e8c5aaSvikram 309525e8c5aaSvikram csp = VTOCS(handlep->lh_vp); 309625e8c5aaSvikram mutex_enter(&csp->s_lock); 309725e8c5aaSvikram if ((dip = csp->s_dip) != NULL) 309825e8c5aaSvikram e_ddi_hold_devi(dip); 309925e8c5aaSvikram mutex_exit(&csp->s_lock); 310025e8c5aaSvikram if (dip == NULL) 310125e8c5aaSvikram dip = e_ddi_hold_devi_by_dev(dev, 0); 310225e8c5aaSvikram 310325e8c5aaSvikram if (dip == NULL) { 310425e8c5aaSvikram cmn_err(CE_WARN, "ldi_ev_get_cookie: No devinfo node for LDI " 310525e8c5aaSvikram "handle: %p", (void *)handlep); 310625e8c5aaSvikram return (LDI_EV_FAILURE); 310725e8c5aaSvikram } 310825e8c5aaSvikram 310925e8c5aaSvikram LDI_EVDBG((CE_NOTE, "Calling ddi_get_eventcookie: dip=%p, ev=%s", 311025e8c5aaSvikram (void *)dip, evname)); 311125e8c5aaSvikram 311225e8c5aaSvikram res = ddi_get_eventcookie(dip, evname, &ddi_cookie); 311325e8c5aaSvikram 311425e8c5aaSvikram ddi_release_devi(dip); 311525e8c5aaSvikram 311625e8c5aaSvikram if (res == DDI_SUCCESS) { 311725e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_get_cookie: NDI cookie found")); 311825e8c5aaSvikram *cookiep = (ldi_ev_cookie_t)ddi_cookie; 311925e8c5aaSvikram return (LDI_EV_SUCCESS); 312025e8c5aaSvikram } else { 312125e8c5aaSvikram LDI_EVDBG((CE_WARN, "ldi_ev_get_cookie: NDI cookie: failed")); 312225e8c5aaSvikram return (LDI_EV_FAILURE); 312325e8c5aaSvikram } 312425e8c5aaSvikram } 312525e8c5aaSvikram 312625e8c5aaSvikram /*ARGSUSED*/ 312725e8c5aaSvikram static void 312825e8c5aaSvikram i_ldi_ev_callback(dev_info_t *dip, ddi_eventcookie_t event_cookie, 312925e8c5aaSvikram void *arg, void *ev_data) 313025e8c5aaSvikram { 313125e8c5aaSvikram ldi_ev_callback_impl_t *lecp = (ldi_ev_callback_impl_t *)arg; 313225e8c5aaSvikram 313325e8c5aaSvikram ASSERT(lecp != NULL); 313425e8c5aaSvikram ASSERT(!ldi_native_cookie(lecp->lec_cookie)); 313525e8c5aaSvikram ASSERT(lecp->lec_lhp); 313625e8c5aaSvikram ASSERT(lecp->lec_notify == NULL); 313725e8c5aaSvikram ASSERT(lecp->lec_finalize); 313825e8c5aaSvikram 313925e8c5aaSvikram LDI_EVDBG((CE_NOTE, "i_ldi_ev_callback: ldh=%p, cookie=%p, arg=%p, " 314025e8c5aaSvikram "ev_data=%p", (void *)lecp->lec_lhp, (void *)event_cookie, 314125e8c5aaSvikram (void *)lecp->lec_arg, (void *)ev_data)); 314225e8c5aaSvikram 314325e8c5aaSvikram lecp->lec_finalize(lecp->lec_lhp, (ldi_ev_cookie_t)event_cookie, 314425e8c5aaSvikram lecp->lec_arg, ev_data); 314525e8c5aaSvikram } 314625e8c5aaSvikram 314725e8c5aaSvikram int 314825e8c5aaSvikram ldi_ev_register_callbacks(ldi_handle_t lh, ldi_ev_cookie_t cookie, 314925e8c5aaSvikram ldi_ev_callback_t *callb, void *arg, ldi_callback_id_t *id) 315025e8c5aaSvikram { 315125e8c5aaSvikram struct ldi_handle *lhp = (struct ldi_handle *)lh; 315225e8c5aaSvikram ldi_ev_callback_impl_t *lecp; 315325e8c5aaSvikram dev_t dev; 315425e8c5aaSvikram struct snode *csp; 315525e8c5aaSvikram dev_info_t *dip; 315625e8c5aaSvikram int ddi_event; 315725e8c5aaSvikram 315825e8c5aaSvikram ASSERT(!servicing_interrupt()); 315925e8c5aaSvikram 316025e8c5aaSvikram if (lh == NULL || cookie == NULL || callb == NULL || id == NULL) { 316125e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_register_callbacks: Invalid args")); 316225e8c5aaSvikram return (LDI_EV_FAILURE); 316325e8c5aaSvikram } 316425e8c5aaSvikram 316525e8c5aaSvikram if (callb->cb_vers != LDI_EV_CB_VERS) { 316625e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_register_callbacks: Invalid vers")); 316725e8c5aaSvikram return (LDI_EV_FAILURE); 316825e8c5aaSvikram } 316925e8c5aaSvikram 317025e8c5aaSvikram if (callb->cb_notify == NULL && callb->cb_finalize == NULL) { 317125e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_register_callbacks: NULL callb")); 317225e8c5aaSvikram return (LDI_EV_FAILURE); 317325e8c5aaSvikram } 317425e8c5aaSvikram 317525e8c5aaSvikram *id = 0; 317625e8c5aaSvikram 317725e8c5aaSvikram dev = lhp->lh_vp->v_rdev; 317825e8c5aaSvikram csp = VTOCS(lhp->lh_vp); 317925e8c5aaSvikram mutex_enter(&csp->s_lock); 318025e8c5aaSvikram if ((dip = csp->s_dip) != NULL) 318125e8c5aaSvikram e_ddi_hold_devi(dip); 318225e8c5aaSvikram mutex_exit(&csp->s_lock); 318325e8c5aaSvikram if (dip == NULL) 318425e8c5aaSvikram dip = e_ddi_hold_devi_by_dev(dev, 0); 318525e8c5aaSvikram 318625e8c5aaSvikram if (dip == NULL) { 318725e8c5aaSvikram cmn_err(CE_WARN, "ldi_ev_register: No devinfo node for " 318825e8c5aaSvikram "LDI handle: %p", (void *)lhp); 318925e8c5aaSvikram return (LDI_EV_FAILURE); 319025e8c5aaSvikram } 319125e8c5aaSvikram 319225e8c5aaSvikram lecp = kmem_zalloc(sizeof (ldi_ev_callback_impl_t), KM_SLEEP); 319325e8c5aaSvikram 319425e8c5aaSvikram ddi_event = 0; 319525e8c5aaSvikram if (!ldi_native_cookie(cookie)) { 319625e8c5aaSvikram if (callb->cb_notify || callb->cb_finalize == NULL) { 319725e8c5aaSvikram /* 319825e8c5aaSvikram * NDI event services only accept finalize 319925e8c5aaSvikram */ 320025e8c5aaSvikram cmn_err(CE_WARN, "%s: module: %s: NDI event cookie. " 320125e8c5aaSvikram "Only finalize" 320225e8c5aaSvikram " callback supported with this cookie", 320325e8c5aaSvikram "ldi_ev_register_callbacks", 320425e8c5aaSvikram lhp->lh_ident->li_modname); 320525e8c5aaSvikram kmem_free(lecp, sizeof (ldi_ev_callback_impl_t)); 320625e8c5aaSvikram ddi_release_devi(dip); 320725e8c5aaSvikram return (LDI_EV_FAILURE); 320825e8c5aaSvikram } 320925e8c5aaSvikram 321025e8c5aaSvikram if (ddi_add_event_handler(dip, (ddi_eventcookie_t)cookie, 321125e8c5aaSvikram i_ldi_ev_callback, (void *)lecp, 321225e8c5aaSvikram (ddi_callback_id_t *)&lecp->lec_id) 321325e8c5aaSvikram != DDI_SUCCESS) { 321425e8c5aaSvikram kmem_free(lecp, sizeof (ldi_ev_callback_impl_t)); 321525e8c5aaSvikram ddi_release_devi(dip); 321625e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_register_callbacks(): " 321725e8c5aaSvikram "ddi_add_event_handler failed")); 321825e8c5aaSvikram return (LDI_EV_FAILURE); 321925e8c5aaSvikram } 322025e8c5aaSvikram ddi_event = 1; 322125e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_register_callbacks(): " 322225e8c5aaSvikram "ddi_add_event_handler success")); 322325e8c5aaSvikram } 322425e8c5aaSvikram 322525e8c5aaSvikram 322625e8c5aaSvikram 322725e8c5aaSvikram ldi_ev_lock(); 322825e8c5aaSvikram 322925e8c5aaSvikram /* 323025e8c5aaSvikram * Add the notify/finalize callback to the LDI's list of callbacks. 323125e8c5aaSvikram */ 323225e8c5aaSvikram lecp->lec_lhp = lhp; 323325e8c5aaSvikram lecp->lec_dev = lhp->lh_vp->v_rdev; 3234349dcea3SGarrett D'Amore lecp->lec_spec = VTYP_TO_STYP(lhp->lh_vp->v_type); 323525e8c5aaSvikram lecp->lec_notify = callb->cb_notify; 323625e8c5aaSvikram lecp->lec_finalize = callb->cb_finalize; 323725e8c5aaSvikram lecp->lec_arg = arg; 323825e8c5aaSvikram lecp->lec_cookie = cookie; 323925e8c5aaSvikram if (!ddi_event) 324025e8c5aaSvikram lecp->lec_id = (void *)(uintptr_t)(++ldi_ev_id_pool); 324125e8c5aaSvikram else 324225e8c5aaSvikram ASSERT(lecp->lec_id); 324325e8c5aaSvikram lecp->lec_dip = dip; 324425e8c5aaSvikram list_insert_tail(&ldi_ev_callback_list.le_head, lecp); 324525e8c5aaSvikram 324625e8c5aaSvikram *id = (ldi_callback_id_t)lecp->lec_id; 324725e8c5aaSvikram 324825e8c5aaSvikram ldi_ev_unlock(); 324925e8c5aaSvikram 325025e8c5aaSvikram ddi_release_devi(dip); 325125e8c5aaSvikram 325225e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_register_callbacks: registered " 325325e8c5aaSvikram "notify/finalize")); 325425e8c5aaSvikram 325525e8c5aaSvikram return (LDI_EV_SUCCESS); 325625e8c5aaSvikram } 325725e8c5aaSvikram 325825e8c5aaSvikram static int 325925e8c5aaSvikram ldi_ev_device_match(ldi_ev_callback_impl_t *lecp, dev_info_t *dip, 326025e8c5aaSvikram dev_t dev, int spec_type) 326125e8c5aaSvikram { 326225e8c5aaSvikram ASSERT(lecp); 326325e8c5aaSvikram ASSERT(dip); 326425e8c5aaSvikram ASSERT(dev != DDI_DEV_T_NONE); 326525e8c5aaSvikram ASSERT(dev != NODEV); 326625e8c5aaSvikram ASSERT((dev == DDI_DEV_T_ANY && spec_type == 0) || 326725e8c5aaSvikram (spec_type == S_IFCHR || spec_type == S_IFBLK)); 326825e8c5aaSvikram ASSERT(lecp->lec_dip); 326925e8c5aaSvikram ASSERT(lecp->lec_spec == S_IFCHR || lecp->lec_spec == S_IFBLK); 327025e8c5aaSvikram ASSERT(lecp->lec_dev != DDI_DEV_T_ANY); 327125e8c5aaSvikram ASSERT(lecp->lec_dev != DDI_DEV_T_NONE); 327225e8c5aaSvikram ASSERT(lecp->lec_dev != NODEV); 327325e8c5aaSvikram 327425e8c5aaSvikram if (dip != lecp->lec_dip) 327525e8c5aaSvikram return (0); 327625e8c5aaSvikram 327725e8c5aaSvikram if (dev != DDI_DEV_T_ANY) { 327825e8c5aaSvikram if (dev != lecp->lec_dev || spec_type != lecp->lec_spec) 327925e8c5aaSvikram return (0); 328025e8c5aaSvikram } 328125e8c5aaSvikram 328225e8c5aaSvikram LDI_EVTRC((CE_NOTE, "ldi_ev_device_match: MATCH dip=%p", (void *)dip)); 328325e8c5aaSvikram 328425e8c5aaSvikram return (1); 328525e8c5aaSvikram } 328625e8c5aaSvikram 328725e8c5aaSvikram /* 328825e8c5aaSvikram * LDI framework function to post a "notify" event to all layered drivers 328925e8c5aaSvikram * that have registered for that event 329025e8c5aaSvikram * 329125e8c5aaSvikram * Returns: 329225e8c5aaSvikram * LDI_EV_SUCCESS - registered callbacks allow event 329325e8c5aaSvikram * LDI_EV_FAILURE - registered callbacks block event 329425e8c5aaSvikram * LDI_EV_NONE - No matching LDI callbacks 329525e8c5aaSvikram * 329625e8c5aaSvikram * This function is *not* to be called by layered drivers. It is for I/O 329725e8c5aaSvikram * framework code in Solaris, such as the I/O retire code and DR code 329825e8c5aaSvikram * to call while servicing a device event such as offline or degraded. 329925e8c5aaSvikram */ 330025e8c5aaSvikram int 330125e8c5aaSvikram ldi_invoke_notify(dev_info_t *dip, dev_t dev, int spec_type, char *event, 330225e8c5aaSvikram void *ev_data) 330325e8c5aaSvikram { 330425e8c5aaSvikram ldi_ev_callback_impl_t *lecp; 330525e8c5aaSvikram list_t *listp; 330625e8c5aaSvikram int ret; 330725e8c5aaSvikram char *lec_event; 330825e8c5aaSvikram 330925e8c5aaSvikram ASSERT(dip); 331025e8c5aaSvikram ASSERT(dev != DDI_DEV_T_NONE); 331125e8c5aaSvikram ASSERT(dev != NODEV); 331225e8c5aaSvikram ASSERT((dev == DDI_DEV_T_ANY && spec_type == 0) || 331325e8c5aaSvikram (spec_type == S_IFCHR || spec_type == S_IFBLK)); 331425e8c5aaSvikram ASSERT(event); 331525e8c5aaSvikram ASSERT(ldi_native_event(event)); 331625e8c5aaSvikram ASSERT(ldi_ev_sync_event(event)); 331725e8c5aaSvikram 331825e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): entered: dip=%p, ev=%s", 331925e8c5aaSvikram (void *)dip, event)); 332025e8c5aaSvikram 332125e8c5aaSvikram ret = LDI_EV_NONE; 332225e8c5aaSvikram ldi_ev_lock(); 332325e8c5aaSvikram listp = &ldi_ev_callback_list.le_head; 332425e8c5aaSvikram for (lecp = list_head(listp); lecp; lecp = list_next(listp, lecp)) { 332525e8c5aaSvikram 332625e8c5aaSvikram /* Check if matching device */ 332725e8c5aaSvikram if (!ldi_ev_device_match(lecp, dip, dev, spec_type)) 332825e8c5aaSvikram continue; 332925e8c5aaSvikram 333025e8c5aaSvikram if (lecp->lec_lhp == NULL) { 333125e8c5aaSvikram /* 333225e8c5aaSvikram * Consumer has unregistered the handle and so 333325e8c5aaSvikram * is no longer interested in notify events. 333425e8c5aaSvikram */ 333525e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): No LDI " 333625e8c5aaSvikram "handle, skipping")); 333725e8c5aaSvikram continue; 333825e8c5aaSvikram } 333925e8c5aaSvikram 334025e8c5aaSvikram if (lecp->lec_notify == NULL) { 334125e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): No notify " 334225e8c5aaSvikram "callback. skipping")); 334325e8c5aaSvikram continue; /* not interested in notify */ 334425e8c5aaSvikram } 334525e8c5aaSvikram 334625e8c5aaSvikram /* 334725e8c5aaSvikram * Check if matching event 334825e8c5aaSvikram */ 334925e8c5aaSvikram lec_event = ldi_ev_get_type(lecp->lec_cookie); 335025e8c5aaSvikram if (strcmp(event, lec_event) != 0) { 335125e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): Not matching" 335225e8c5aaSvikram " event {%s,%s}. skipping", event, lec_event)); 335325e8c5aaSvikram continue; 335425e8c5aaSvikram } 335525e8c5aaSvikram 335625e8c5aaSvikram lecp->lec_lhp->lh_flags |= LH_FLAGS_NOTIFY; 335725e8c5aaSvikram if (lecp->lec_notify(lecp->lec_lhp, lecp->lec_cookie, 335825e8c5aaSvikram lecp->lec_arg, ev_data) != LDI_EV_SUCCESS) { 335925e8c5aaSvikram ret = LDI_EV_FAILURE; 336025e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): notify" 336125e8c5aaSvikram " FAILURE")); 336225e8c5aaSvikram break; 336325e8c5aaSvikram } 336425e8c5aaSvikram 336525e8c5aaSvikram /* We have a matching callback that allows the event to occur */ 336625e8c5aaSvikram ret = LDI_EV_SUCCESS; 336725e8c5aaSvikram 336825e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): 1 consumer success")); 336925e8c5aaSvikram } 337025e8c5aaSvikram 337125e8c5aaSvikram if (ret != LDI_EV_FAILURE) 337225e8c5aaSvikram goto out; 337325e8c5aaSvikram 337425e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): undoing notify")); 337525e8c5aaSvikram 337625e8c5aaSvikram /* 337725e8c5aaSvikram * Undo notifies already sent 337825e8c5aaSvikram */ 337925e8c5aaSvikram lecp = list_prev(listp, lecp); 338025e8c5aaSvikram for (; lecp; lecp = list_prev(listp, lecp)) { 338125e8c5aaSvikram 338225e8c5aaSvikram /* 338325e8c5aaSvikram * Check if matching device 338425e8c5aaSvikram */ 338525e8c5aaSvikram if (!ldi_ev_device_match(lecp, dip, dev, spec_type)) 338625e8c5aaSvikram continue; 338725e8c5aaSvikram 338825e8c5aaSvikram 338925e8c5aaSvikram if (lecp->lec_finalize == NULL) { 339025e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): no finalize, " 339125e8c5aaSvikram "skipping")); 339225e8c5aaSvikram continue; /* not interested in finalize */ 339325e8c5aaSvikram } 339425e8c5aaSvikram 339525e8c5aaSvikram /* 339625e8c5aaSvikram * it is possible that in response to a notify event a 339725e8c5aaSvikram * layered driver closed its LDI handle so it is ok 339825e8c5aaSvikram * to have a NULL LDI handle for finalize. The layered 339925e8c5aaSvikram * driver is expected to maintain state in its "arg" 340025e8c5aaSvikram * parameter to keep track of the closed device. 340125e8c5aaSvikram */ 340225e8c5aaSvikram 340325e8c5aaSvikram /* Check if matching event */ 340425e8c5aaSvikram lec_event = ldi_ev_get_type(lecp->lec_cookie); 340525e8c5aaSvikram if (strcmp(event, lec_event) != 0) { 340625e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): not matching " 340725e8c5aaSvikram "event: %s,%s, skipping", event, lec_event)); 340825e8c5aaSvikram continue; 340925e8c5aaSvikram } 341025e8c5aaSvikram 341125e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): calling finalize")); 341225e8c5aaSvikram 341325e8c5aaSvikram lecp->lec_finalize(lecp->lec_lhp, lecp->lec_cookie, 341425e8c5aaSvikram LDI_EV_FAILURE, lecp->lec_arg, ev_data); 341525e8c5aaSvikram 341625e8c5aaSvikram /* 341725e8c5aaSvikram * If LDI native event and LDI handle closed in context 341825e8c5aaSvikram * of notify, NULL out the finalize callback as we have 341925e8c5aaSvikram * already called the 1 finalize above allowed in this situation 342025e8c5aaSvikram */ 342125e8c5aaSvikram if (lecp->lec_lhp == NULL && 342225e8c5aaSvikram ldi_native_cookie(lecp->lec_cookie)) { 342325e8c5aaSvikram LDI_EVDBG((CE_NOTE, 342425e8c5aaSvikram "ldi_invoke_notify(): NULL-ing finalize after " 342525e8c5aaSvikram "calling 1 finalize following ldi_close")); 342625e8c5aaSvikram lecp->lec_finalize = NULL; 342725e8c5aaSvikram } 342825e8c5aaSvikram } 342925e8c5aaSvikram 343025e8c5aaSvikram out: 343125e8c5aaSvikram ldi_ev_unlock(); 343225e8c5aaSvikram 343325e8c5aaSvikram if (ret == LDI_EV_NONE) { 343425e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_notify(): no matching " 343525e8c5aaSvikram "LDI callbacks")); 343625e8c5aaSvikram } 343725e8c5aaSvikram 343825e8c5aaSvikram return (ret); 343925e8c5aaSvikram } 344025e8c5aaSvikram 344125e8c5aaSvikram /* 344225e8c5aaSvikram * Framework function to be called from a layered driver to propagate 344325e8c5aaSvikram * LDI "notify" events to exported minors. 344425e8c5aaSvikram * 344525e8c5aaSvikram * This function is a public interface exported by the LDI framework 344625e8c5aaSvikram * for use by layered drivers to propagate device events up the software 344725e8c5aaSvikram * stack. 344825e8c5aaSvikram */ 344925e8c5aaSvikram int 345025e8c5aaSvikram ldi_ev_notify(dev_info_t *dip, minor_t minor, int spec_type, 345125e8c5aaSvikram ldi_ev_cookie_t cookie, void *ev_data) 345225e8c5aaSvikram { 345325e8c5aaSvikram char *evname = ldi_ev_get_type(cookie); 345425e8c5aaSvikram uint_t ct_evtype; 345525e8c5aaSvikram dev_t dev; 345625e8c5aaSvikram major_t major; 345725e8c5aaSvikram int retc; 345825e8c5aaSvikram int retl; 345925e8c5aaSvikram 346025e8c5aaSvikram ASSERT(spec_type == S_IFBLK || spec_type == S_IFCHR); 346125e8c5aaSvikram ASSERT(dip); 346225e8c5aaSvikram ASSERT(ldi_native_cookie(cookie)); 346325e8c5aaSvikram 346425e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_notify(): entered: event=%s, dip=%p", 346525e8c5aaSvikram evname, (void *)dip)); 346625e8c5aaSvikram 346725e8c5aaSvikram if (!ldi_ev_sync_event(evname)) { 346825e8c5aaSvikram cmn_err(CE_PANIC, "ldi_ev_notify(): %s not a " 346925e8c5aaSvikram "negotiatable event", evname); 347025e8c5aaSvikram return (LDI_EV_SUCCESS); 347125e8c5aaSvikram } 347225e8c5aaSvikram 347325e8c5aaSvikram major = ddi_driver_major(dip); 3474a204de77Scth if (major == DDI_MAJOR_T_NONE) { 347525e8c5aaSvikram char *path = kmem_alloc(MAXPATHLEN, KM_SLEEP); 347625e8c5aaSvikram (void) ddi_pathname(dip, path); 347725e8c5aaSvikram cmn_err(CE_WARN, "ldi_ev_notify: cannot derive major number " 347825e8c5aaSvikram "for device %s", path); 347925e8c5aaSvikram kmem_free(path, MAXPATHLEN); 348025e8c5aaSvikram return (LDI_EV_FAILURE); 348125e8c5aaSvikram } 348225e8c5aaSvikram dev = makedevice(major, minor); 348325e8c5aaSvikram 348425e8c5aaSvikram /* 348525e8c5aaSvikram * Generate negotiation contract events on contracts (if any) associated 348625e8c5aaSvikram * with this minor. 348725e8c5aaSvikram */ 348825e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_notify(): calling contract nego.")); 348925e8c5aaSvikram ct_evtype = ldi_contract_event(evname); 349025e8c5aaSvikram retc = contract_device_negotiate(dip, dev, spec_type, ct_evtype); 349125e8c5aaSvikram if (retc == CT_NACK) { 349225e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_notify(): contract neg. NACK")); 349325e8c5aaSvikram return (LDI_EV_FAILURE); 349425e8c5aaSvikram } 349525e8c5aaSvikram 349625e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_notify(): LDI invoke notify")); 349725e8c5aaSvikram retl = ldi_invoke_notify(dip, dev, spec_type, evname, ev_data); 349825e8c5aaSvikram if (retl == LDI_EV_FAILURE) { 349925e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_notify(): ldi_invoke_notify " 350025e8c5aaSvikram "returned FAILURE. Calling contract negend")); 350125e8c5aaSvikram contract_device_negend(dip, dev, spec_type, CT_EV_FAILURE); 350225e8c5aaSvikram return (LDI_EV_FAILURE); 350325e8c5aaSvikram } 350425e8c5aaSvikram 350525e8c5aaSvikram /* 350625e8c5aaSvikram * The very fact that we are here indicates that there is a 350725e8c5aaSvikram * LDI callback (and hence a constraint) for the retire of the 350825e8c5aaSvikram * HW device. So we just return success even if there are no 350925e8c5aaSvikram * contracts or LDI callbacks against the minors layered on top 351025e8c5aaSvikram * of the HW minors 351125e8c5aaSvikram */ 351225e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_notify(): returning SUCCESS")); 351325e8c5aaSvikram return (LDI_EV_SUCCESS); 351425e8c5aaSvikram } 351525e8c5aaSvikram 351625e8c5aaSvikram /* 351725e8c5aaSvikram * LDI framework function to invoke "finalize" callbacks for all layered 351825e8c5aaSvikram * drivers that have registered callbacks for that event. 351925e8c5aaSvikram * 352025e8c5aaSvikram * This function is *not* to be called by layered drivers. It is for I/O 352125e8c5aaSvikram * framework code in Solaris, such as the I/O retire code and DR code 352225e8c5aaSvikram * to call while servicing a device event such as offline or degraded. 352325e8c5aaSvikram */ 352425e8c5aaSvikram void 352525e8c5aaSvikram ldi_invoke_finalize(dev_info_t *dip, dev_t dev, int spec_type, char *event, 352625e8c5aaSvikram int ldi_result, void *ev_data) 352725e8c5aaSvikram { 352825e8c5aaSvikram ldi_ev_callback_impl_t *lecp; 352925e8c5aaSvikram list_t *listp; 353025e8c5aaSvikram char *lec_event; 353125e8c5aaSvikram int found = 0; 353225e8c5aaSvikram 353325e8c5aaSvikram ASSERT(dip); 353425e8c5aaSvikram ASSERT(dev != DDI_DEV_T_NONE); 353525e8c5aaSvikram ASSERT(dev != NODEV); 353625e8c5aaSvikram ASSERT((dev == DDI_DEV_T_ANY && spec_type == 0) || 353725e8c5aaSvikram (spec_type == S_IFCHR || spec_type == S_IFBLK)); 353825e8c5aaSvikram ASSERT(event); 353925e8c5aaSvikram ASSERT(ldi_native_event(event)); 354025e8c5aaSvikram ASSERT(ldi_result == LDI_EV_SUCCESS || ldi_result == LDI_EV_FAILURE); 354125e8c5aaSvikram 354225e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_finalize(): entered: dip=%p, result=%d" 354325e8c5aaSvikram " event=%s", (void *)dip, ldi_result, event)); 354425e8c5aaSvikram 354525e8c5aaSvikram ldi_ev_lock(); 354625e8c5aaSvikram listp = &ldi_ev_callback_list.le_head; 354725e8c5aaSvikram for (lecp = list_head(listp); lecp; lecp = list_next(listp, lecp)) { 354825e8c5aaSvikram 354925e8c5aaSvikram if (lecp->lec_finalize == NULL) { 355025e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_finalize(): No " 355125e8c5aaSvikram "finalize. Skipping")); 355225e8c5aaSvikram continue; /* Not interested in finalize */ 355325e8c5aaSvikram } 355425e8c5aaSvikram 355525e8c5aaSvikram /* 355625e8c5aaSvikram * Check if matching device 355725e8c5aaSvikram */ 355825e8c5aaSvikram if (!ldi_ev_device_match(lecp, dip, dev, spec_type)) 355925e8c5aaSvikram continue; 356025e8c5aaSvikram 356125e8c5aaSvikram /* 356225e8c5aaSvikram * It is valid for the LDI handle to be NULL during finalize. 356325e8c5aaSvikram * The layered driver may have done an LDI close in the notify 356425e8c5aaSvikram * callback. 356525e8c5aaSvikram */ 356625e8c5aaSvikram 356725e8c5aaSvikram /* 356825e8c5aaSvikram * Check if matching event 356925e8c5aaSvikram */ 357025e8c5aaSvikram lec_event = ldi_ev_get_type(lecp->lec_cookie); 357125e8c5aaSvikram if (strcmp(event, lec_event) != 0) { 357225e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_finalize(): Not " 357325e8c5aaSvikram "matching event {%s,%s}. Skipping", 357425e8c5aaSvikram event, lec_event)); 357525e8c5aaSvikram continue; 357625e8c5aaSvikram } 357725e8c5aaSvikram 357825e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_finalize(): calling finalize")); 357925e8c5aaSvikram 358025e8c5aaSvikram found = 1; 358125e8c5aaSvikram 358225e8c5aaSvikram lecp->lec_finalize(lecp->lec_lhp, lecp->lec_cookie, 358325e8c5aaSvikram ldi_result, lecp->lec_arg, ev_data); 358425e8c5aaSvikram 358525e8c5aaSvikram /* 358625e8c5aaSvikram * If LDI native event and LDI handle closed in context 358725e8c5aaSvikram * of notify, NULL out the finalize callback as we have 358825e8c5aaSvikram * already called the 1 finalize above allowed in this situation 358925e8c5aaSvikram */ 359025e8c5aaSvikram if (lecp->lec_lhp == NULL && 359125e8c5aaSvikram ldi_native_cookie(lecp->lec_cookie)) { 359225e8c5aaSvikram LDI_EVDBG((CE_NOTE, 359325e8c5aaSvikram "ldi_invoke_finalize(): NULLing finalize after " 359425e8c5aaSvikram "calling 1 finalize following ldi_close")); 359525e8c5aaSvikram lecp->lec_finalize = NULL; 359625e8c5aaSvikram } 359725e8c5aaSvikram } 359825e8c5aaSvikram ldi_ev_unlock(); 359925e8c5aaSvikram 360025e8c5aaSvikram if (found) 360125e8c5aaSvikram return; 360225e8c5aaSvikram 360325e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_invoke_finalize(): no matching callbacks")); 360425e8c5aaSvikram } 360525e8c5aaSvikram 360625e8c5aaSvikram /* 360725e8c5aaSvikram * Framework function to be called from a layered driver to propagate 360825e8c5aaSvikram * LDI "finalize" events to exported minors. 360925e8c5aaSvikram * 361025e8c5aaSvikram * This function is a public interface exported by the LDI framework 361125e8c5aaSvikram * for use by layered drivers to propagate device events up the software 361225e8c5aaSvikram * stack. 361325e8c5aaSvikram */ 361425e8c5aaSvikram void 361525e8c5aaSvikram ldi_ev_finalize(dev_info_t *dip, minor_t minor, int spec_type, int ldi_result, 361625e8c5aaSvikram ldi_ev_cookie_t cookie, void *ev_data) 361725e8c5aaSvikram { 361825e8c5aaSvikram dev_t dev; 361925e8c5aaSvikram major_t major; 362025e8c5aaSvikram char *evname; 362125e8c5aaSvikram int ct_result = (ldi_result == LDI_EV_SUCCESS) ? 362225e8c5aaSvikram CT_EV_SUCCESS : CT_EV_FAILURE; 362325e8c5aaSvikram uint_t ct_evtype; 362425e8c5aaSvikram 362525e8c5aaSvikram ASSERT(dip); 362625e8c5aaSvikram ASSERT(spec_type == S_IFBLK || spec_type == S_IFCHR); 362725e8c5aaSvikram ASSERT(ldi_result == LDI_EV_SUCCESS || ldi_result == LDI_EV_FAILURE); 362825e8c5aaSvikram ASSERT(ldi_native_cookie(cookie)); 362925e8c5aaSvikram 363025e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_finalize: entered: dip=%p", (void *)dip)); 363125e8c5aaSvikram 363225e8c5aaSvikram major = ddi_driver_major(dip); 3633a204de77Scth if (major == DDI_MAJOR_T_NONE) { 363425e8c5aaSvikram char *path = kmem_alloc(MAXPATHLEN, KM_SLEEP); 363525e8c5aaSvikram (void) ddi_pathname(dip, path); 363625e8c5aaSvikram cmn_err(CE_WARN, "ldi_ev_finalize: cannot derive major number " 363725e8c5aaSvikram "for device %s", path); 363825e8c5aaSvikram kmem_free(path, MAXPATHLEN); 363925e8c5aaSvikram return; 364025e8c5aaSvikram } 364125e8c5aaSvikram dev = makedevice(major, minor); 364225e8c5aaSvikram 364325e8c5aaSvikram evname = ldi_ev_get_type(cookie); 364425e8c5aaSvikram 364525e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_finalize: calling contracts")); 364625e8c5aaSvikram ct_evtype = ldi_contract_event(evname); 364725e8c5aaSvikram contract_device_finalize(dip, dev, spec_type, ct_evtype, ct_result); 364825e8c5aaSvikram 364925e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_finalize: calling ldi_invoke_finalize")); 365025e8c5aaSvikram ldi_invoke_finalize(dip, dev, spec_type, evname, ldi_result, ev_data); 365125e8c5aaSvikram } 365225e8c5aaSvikram 365325e8c5aaSvikram int 365425e8c5aaSvikram ldi_ev_remove_callbacks(ldi_callback_id_t id) 365525e8c5aaSvikram { 365625e8c5aaSvikram ldi_ev_callback_impl_t *lecp; 365725e8c5aaSvikram ldi_ev_callback_impl_t *next; 365825e8c5aaSvikram ldi_ev_callback_impl_t *found; 365925e8c5aaSvikram list_t *listp; 366025e8c5aaSvikram 366125e8c5aaSvikram ASSERT(!servicing_interrupt()); 366225e8c5aaSvikram 366325e8c5aaSvikram if (id == 0) { 366425e8c5aaSvikram cmn_err(CE_WARN, "ldi_ev_remove_callbacks: Invalid ID 0"); 366525e8c5aaSvikram return (LDI_EV_FAILURE); 366625e8c5aaSvikram } 366725e8c5aaSvikram 366825e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_remove_callbacks: entered: id=%p", 366925e8c5aaSvikram (void *)id)); 367025e8c5aaSvikram 367125e8c5aaSvikram ldi_ev_lock(); 367225e8c5aaSvikram 367325e8c5aaSvikram listp = &ldi_ev_callback_list.le_head; 367425e8c5aaSvikram next = found = NULL; 367525e8c5aaSvikram for (lecp = list_head(listp); lecp; lecp = next) { 367625e8c5aaSvikram next = list_next(listp, lecp); 367725e8c5aaSvikram if (lecp->lec_id == id) { 367825e8c5aaSvikram ASSERT(found == NULL); 367925e8c5aaSvikram list_remove(listp, lecp); 368025e8c5aaSvikram found = lecp; 368125e8c5aaSvikram } 368225e8c5aaSvikram } 368325e8c5aaSvikram ldi_ev_unlock(); 368425e8c5aaSvikram 368525e8c5aaSvikram if (found == NULL) { 368625e8c5aaSvikram cmn_err(CE_WARN, "No LDI event handler for id (%p)", 368725e8c5aaSvikram (void *)id); 368825e8c5aaSvikram return (LDI_EV_SUCCESS); 368925e8c5aaSvikram } 369025e8c5aaSvikram 369125e8c5aaSvikram if (!ldi_native_cookie(found->lec_cookie)) { 369225e8c5aaSvikram ASSERT(found->lec_notify == NULL); 369325e8c5aaSvikram if (ddi_remove_event_handler((ddi_callback_id_t)id) 369425e8c5aaSvikram != DDI_SUCCESS) { 369525e8c5aaSvikram cmn_err(CE_WARN, "failed to remove NDI event handler " 369625e8c5aaSvikram "for id (%p)", (void *)id); 369725e8c5aaSvikram ldi_ev_lock(); 369825e8c5aaSvikram list_insert_tail(listp, found); 369925e8c5aaSvikram ldi_ev_unlock(); 370025e8c5aaSvikram return (LDI_EV_FAILURE); 370125e8c5aaSvikram } 370225e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_remove_callbacks: NDI event " 370325e8c5aaSvikram "service removal succeeded")); 370425e8c5aaSvikram } else { 370525e8c5aaSvikram LDI_EVDBG((CE_NOTE, "ldi_ev_remove_callbacks: removed " 370625e8c5aaSvikram "LDI native callbacks")); 370725e8c5aaSvikram } 370825e8c5aaSvikram kmem_free(found, sizeof (ldi_ev_callback_impl_t)); 370925e8c5aaSvikram 371025e8c5aaSvikram return (LDI_EV_SUCCESS); 371125e8c5aaSvikram } 3712