10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
54582Scth * Common Development and Distribution License (the "License").
64582Scth * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
210Sstevel@tonic-gate /*
2210842SJerry.Gilliam@Sun.COM * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
230Sstevel@tonic-gate * Use is subject to license terms.
240Sstevel@tonic-gate */
250Sstevel@tonic-gate
260Sstevel@tonic-gate #include <sys/types.h>
270Sstevel@tonic-gate #include <sys/t_lock.h>
280Sstevel@tonic-gate #include <sys/param.h>
290Sstevel@tonic-gate #include <sys/conf.h>
300Sstevel@tonic-gate #include <sys/systm.h>
310Sstevel@tonic-gate #include <sys/sysmacros.h>
320Sstevel@tonic-gate #include <sys/buf.h>
330Sstevel@tonic-gate #include <sys/cred.h>
340Sstevel@tonic-gate #include <sys/user.h>
350Sstevel@tonic-gate #include <sys/stat.h>
360Sstevel@tonic-gate #include <sys/uio.h>
370Sstevel@tonic-gate #include <sys/vnode.h>
380Sstevel@tonic-gate #include <sys/fs/snode.h>
390Sstevel@tonic-gate #include <sys/open.h>
400Sstevel@tonic-gate #include <sys/kmem.h>
410Sstevel@tonic-gate #include <sys/file.h>
420Sstevel@tonic-gate #include <sys/debug.h>
430Sstevel@tonic-gate #include <sys/tnf_probe.h>
440Sstevel@tonic-gate
450Sstevel@tonic-gate /* Don't #include <sys/ddi.h> - it #undef's getmajor() */
460Sstevel@tonic-gate
470Sstevel@tonic-gate #include <sys/sunddi.h>
480Sstevel@tonic-gate #include <sys/sunndi.h>
490Sstevel@tonic-gate #include <sys/sunpm.h>
500Sstevel@tonic-gate #include <sys/ddi_impldefs.h>
510Sstevel@tonic-gate #include <sys/ndi_impldefs.h>
520Sstevel@tonic-gate #include <sys/esunddi.h>
530Sstevel@tonic-gate #include <sys/autoconf.h>
540Sstevel@tonic-gate #include <sys/modctl.h>
550Sstevel@tonic-gate #include <sys/epm.h>
560Sstevel@tonic-gate #include <sys/dacf.h>
570Sstevel@tonic-gate #include <sys/sunmdi.h>
580Sstevel@tonic-gate #include <sys/instance.h>
590Sstevel@tonic-gate #include <sys/sdt.h>
600Sstevel@tonic-gate
610Sstevel@tonic-gate static void i_attach_ctlop(dev_info_t *, ddi_attach_cmd_t, ddi_pre_post_t, int);
620Sstevel@tonic-gate static void i_detach_ctlop(dev_info_t *, ddi_detach_cmd_t, ddi_pre_post_t, int);
630Sstevel@tonic-gate
640Sstevel@tonic-gate /* decide what to do when a double dev_lclose is detected */
650Sstevel@tonic-gate #ifdef DEBUG
660Sstevel@tonic-gate int dev_lclose_ce = CE_PANIC;
670Sstevel@tonic-gate #else /* DEBUG */
680Sstevel@tonic-gate int dev_lclose_ce = CE_WARN;
690Sstevel@tonic-gate #endif /* DEBUG */
700Sstevel@tonic-gate
710Sstevel@tonic-gate /*
720Sstevel@tonic-gate * Configuration-related entry points for nexus and leaf drivers
730Sstevel@tonic-gate */
740Sstevel@tonic-gate int
devi_identify(dev_info_t * devi)750Sstevel@tonic-gate devi_identify(dev_info_t *devi)
760Sstevel@tonic-gate {
770Sstevel@tonic-gate struct dev_ops *ops;
780Sstevel@tonic-gate int (*fn)(dev_info_t *);
790Sstevel@tonic-gate
800Sstevel@tonic-gate if ((ops = ddi_get_driver(devi)) == NULL ||
810Sstevel@tonic-gate (fn = ops->devo_identify) == NULL)
820Sstevel@tonic-gate return (-1);
830Sstevel@tonic-gate
840Sstevel@tonic-gate return ((*fn)(devi));
850Sstevel@tonic-gate }
860Sstevel@tonic-gate
870Sstevel@tonic-gate int
devi_probe(dev_info_t * devi)880Sstevel@tonic-gate devi_probe(dev_info_t *devi)
890Sstevel@tonic-gate {
900Sstevel@tonic-gate int rv, probe_failed;
910Sstevel@tonic-gate pm_ppm_cookie_t ppm_cookie;
920Sstevel@tonic-gate struct dev_ops *ops;
930Sstevel@tonic-gate int (*fn)(dev_info_t *);
940Sstevel@tonic-gate
950Sstevel@tonic-gate ops = ddi_get_driver(devi);
960Sstevel@tonic-gate ASSERT(ops);
970Sstevel@tonic-gate
980Sstevel@tonic-gate pm_pre_probe(devi, &ppm_cookie);
990Sstevel@tonic-gate
1000Sstevel@tonic-gate /*
1010Sstevel@tonic-gate * probe(9E) in 2.0 implies that you can get
1020Sstevel@tonic-gate * away with not writing one of these .. so we
1030Sstevel@tonic-gate * pretend we're 'nulldev' if we don't find one (sigh).
1040Sstevel@tonic-gate */
105*11052SChris.Horne@Sun.COM if ((fn = ops->devo_probe) == NULL) {
106*11052SChris.Horne@Sun.COM if (ddi_dev_is_sid(devi) == DDI_SUCCESS)
107*11052SChris.Horne@Sun.COM rv = DDI_PROBE_DONTCARE;
108*11052SChris.Horne@Sun.COM else
109*11052SChris.Horne@Sun.COM rv = DDI_PROBE_FAILURE;
110*11052SChris.Horne@Sun.COM } else
1110Sstevel@tonic-gate rv = (*fn)(devi);
1120Sstevel@tonic-gate
1130Sstevel@tonic-gate switch (rv) {
1140Sstevel@tonic-gate case DDI_PROBE_DONTCARE:
1150Sstevel@tonic-gate case DDI_PROBE_SUCCESS:
1160Sstevel@tonic-gate probe_failed = 0;
1170Sstevel@tonic-gate break;
1180Sstevel@tonic-gate default:
1190Sstevel@tonic-gate probe_failed = 1;
1200Sstevel@tonic-gate break;
1210Sstevel@tonic-gate }
1220Sstevel@tonic-gate pm_post_probe(&ppm_cookie, rv, probe_failed);
1230Sstevel@tonic-gate
1240Sstevel@tonic-gate return (rv);
1250Sstevel@tonic-gate }
1260Sstevel@tonic-gate
1270Sstevel@tonic-gate
1280Sstevel@tonic-gate /*
1290Sstevel@tonic-gate * devi_attach()
1300Sstevel@tonic-gate * attach a device instance to the system if the driver supplies an
1310Sstevel@tonic-gate * attach(9E) entrypoint.
1320Sstevel@tonic-gate */
1330Sstevel@tonic-gate int
devi_attach(dev_info_t * devi,ddi_attach_cmd_t cmd)1340Sstevel@tonic-gate devi_attach(dev_info_t *devi, ddi_attach_cmd_t cmd)
1350Sstevel@tonic-gate {
1360Sstevel@tonic-gate struct dev_ops *ops;
1370Sstevel@tonic-gate int error;
1380Sstevel@tonic-gate int (*fn)(dev_info_t *, ddi_attach_cmd_t);
1390Sstevel@tonic-gate pm_ppm_cookie_t pc;
1400Sstevel@tonic-gate
1410Sstevel@tonic-gate if ((error = mdi_pre_attach(devi, cmd)) != DDI_SUCCESS) {
1420Sstevel@tonic-gate return (error);
1430Sstevel@tonic-gate }
1440Sstevel@tonic-gate
1450Sstevel@tonic-gate pm_pre_attach(devi, &pc, cmd);
1460Sstevel@tonic-gate
1470Sstevel@tonic-gate if ((cmd == DDI_RESUME || cmd == DDI_PM_RESUME) &&
1480Sstevel@tonic-gate e_ddi_parental_suspend_resume(devi)) {
1490Sstevel@tonic-gate error = e_ddi_resume(devi, cmd);
1500Sstevel@tonic-gate goto done;
1510Sstevel@tonic-gate }
1520Sstevel@tonic-gate ops = ddi_get_driver(devi);
1530Sstevel@tonic-gate ASSERT(ops);
1540Sstevel@tonic-gate if ((fn = ops->devo_attach) == NULL) {
1550Sstevel@tonic-gate error = DDI_FAILURE;
1560Sstevel@tonic-gate goto done;
1570Sstevel@tonic-gate }
1580Sstevel@tonic-gate
1590Sstevel@tonic-gate /*
1600Sstevel@tonic-gate * Call the driver's attach(9e) entrypoint
1610Sstevel@tonic-gate */
1620Sstevel@tonic-gate i_attach_ctlop(devi, cmd, DDI_PRE, 0);
1630Sstevel@tonic-gate error = (*fn)(devi, cmd);
1640Sstevel@tonic-gate i_attach_ctlop(devi, cmd, DDI_POST, error);
1650Sstevel@tonic-gate
1660Sstevel@tonic-gate done:
1670Sstevel@tonic-gate pm_post_attach(&pc, error);
1680Sstevel@tonic-gate mdi_post_attach(devi, cmd, error);
1690Sstevel@tonic-gate
1700Sstevel@tonic-gate return (error);
1710Sstevel@tonic-gate }
1720Sstevel@tonic-gate
1730Sstevel@tonic-gate /*
1740Sstevel@tonic-gate * devi_detach()
1750Sstevel@tonic-gate * detach a device instance from the system if the driver supplies a
1760Sstevel@tonic-gate * detach(9E) entrypoint.
1770Sstevel@tonic-gate */
1780Sstevel@tonic-gate int
devi_detach(dev_info_t * devi,ddi_detach_cmd_t cmd)1790Sstevel@tonic-gate devi_detach(dev_info_t *devi, ddi_detach_cmd_t cmd)
1800Sstevel@tonic-gate {
1810Sstevel@tonic-gate struct dev_ops *ops;
1820Sstevel@tonic-gate int error;
1830Sstevel@tonic-gate int (*fn)(dev_info_t *, ddi_detach_cmd_t);
1840Sstevel@tonic-gate pm_ppm_cookie_t pc;
1850Sstevel@tonic-gate
1860Sstevel@tonic-gate ASSERT(cmd == DDI_SUSPEND || cmd == DDI_PM_SUSPEND ||
1870Sstevel@tonic-gate cmd == DDI_DETACH);
1880Sstevel@tonic-gate
1890Sstevel@tonic-gate if ((cmd == DDI_SUSPEND || cmd == DDI_PM_SUSPEND) &&
1900Sstevel@tonic-gate e_ddi_parental_suspend_resume(devi)) {
1910Sstevel@tonic-gate return (e_ddi_suspend(devi, cmd));
1920Sstevel@tonic-gate }
1930Sstevel@tonic-gate ops = ddi_get_driver(devi);
1940Sstevel@tonic-gate ASSERT(ops);
1950Sstevel@tonic-gate if ((fn = ops->devo_detach) == NULL)
1960Sstevel@tonic-gate return (DDI_FAILURE);
1970Sstevel@tonic-gate
1980Sstevel@tonic-gate if ((error = mdi_pre_detach(devi, cmd)) != DDI_SUCCESS) {
1990Sstevel@tonic-gate return (error);
2000Sstevel@tonic-gate }
2010Sstevel@tonic-gate i_detach_ctlop(devi, cmd, DDI_PRE, 0);
2020Sstevel@tonic-gate pm_pre_detach(devi, cmd, &pc);
2030Sstevel@tonic-gate
2040Sstevel@tonic-gate /*
2050Sstevel@tonic-gate * Call the driver's detach routine
2060Sstevel@tonic-gate */
2070Sstevel@tonic-gate error = (*fn)(devi, cmd);
2080Sstevel@tonic-gate
2090Sstevel@tonic-gate pm_post_detach(&pc, error);
2100Sstevel@tonic-gate i_detach_ctlop(devi, cmd, DDI_POST, error);
2110Sstevel@tonic-gate mdi_post_detach(devi, cmd, error);
2120Sstevel@tonic-gate
2130Sstevel@tonic-gate return (error);
2140Sstevel@tonic-gate }
2150Sstevel@tonic-gate
2160Sstevel@tonic-gate static void
i_attach_ctlop(dev_info_t * devi,ddi_attach_cmd_t cmd,ddi_pre_post_t w,int ret)2170Sstevel@tonic-gate i_attach_ctlop(dev_info_t *devi, ddi_attach_cmd_t cmd, ddi_pre_post_t w,
2180Sstevel@tonic-gate int ret)
2190Sstevel@tonic-gate {
2200Sstevel@tonic-gate int error;
2210Sstevel@tonic-gate struct attachspec as;
2220Sstevel@tonic-gate dev_info_t *pdip = ddi_get_parent(devi);
2230Sstevel@tonic-gate
2240Sstevel@tonic-gate as.cmd = cmd;
2250Sstevel@tonic-gate as.when = w;
2260Sstevel@tonic-gate as.pdip = pdip;
2270Sstevel@tonic-gate as.result = ret;
2280Sstevel@tonic-gate (void) ddi_ctlops(devi, devi, DDI_CTLOPS_ATTACH, &as, &error);
2290Sstevel@tonic-gate }
2300Sstevel@tonic-gate
2310Sstevel@tonic-gate static void
i_detach_ctlop(dev_info_t * devi,ddi_detach_cmd_t cmd,ddi_pre_post_t w,int ret)2320Sstevel@tonic-gate i_detach_ctlop(dev_info_t *devi, ddi_detach_cmd_t cmd, ddi_pre_post_t w,
2330Sstevel@tonic-gate int ret)
2340Sstevel@tonic-gate {
2350Sstevel@tonic-gate int error;
2360Sstevel@tonic-gate struct detachspec ds;
2370Sstevel@tonic-gate dev_info_t *pdip = ddi_get_parent(devi);
2380Sstevel@tonic-gate
2390Sstevel@tonic-gate ds.cmd = cmd;
2400Sstevel@tonic-gate ds.when = w;
2410Sstevel@tonic-gate ds.pdip = pdip;
2420Sstevel@tonic-gate ds.result = ret;
2430Sstevel@tonic-gate (void) ddi_ctlops(devi, devi, DDI_CTLOPS_DETACH, &ds, &error);
2440Sstevel@tonic-gate }
2450Sstevel@tonic-gate
2460Sstevel@tonic-gate /*
2470Sstevel@tonic-gate * This entry point not defined by Solaris 2.0 DDI/DKI, so
2480Sstevel@tonic-gate * its inclusion here is somewhat moot.
2490Sstevel@tonic-gate */
2500Sstevel@tonic-gate int
devi_reset(dev_info_t * devi,ddi_reset_cmd_t cmd)2510Sstevel@tonic-gate devi_reset(dev_info_t *devi, ddi_reset_cmd_t cmd)
2520Sstevel@tonic-gate {
2530Sstevel@tonic-gate struct dev_ops *ops;
2540Sstevel@tonic-gate int (*fn)(dev_info_t *, ddi_reset_cmd_t);
2550Sstevel@tonic-gate
2560Sstevel@tonic-gate if ((ops = ddi_get_driver(devi)) == NULL ||
2570Sstevel@tonic-gate (fn = ops->devo_reset) == NULL)
2580Sstevel@tonic-gate return (DDI_FAILURE);
2590Sstevel@tonic-gate
2600Sstevel@tonic-gate return ((*fn)(devi, cmd));
2610Sstevel@tonic-gate }
2620Sstevel@tonic-gate
2637656SSherry.Moore@Sun.COM int
devi_quiesce(dev_info_t * devi)2647656SSherry.Moore@Sun.COM devi_quiesce(dev_info_t *devi)
2657656SSherry.Moore@Sun.COM {
2667656SSherry.Moore@Sun.COM struct dev_ops *ops;
2677656SSherry.Moore@Sun.COM int (*fn)(dev_info_t *);
2687656SSherry.Moore@Sun.COM
2697656SSherry.Moore@Sun.COM if (((ops = ddi_get_driver(devi)) == NULL) ||
2707656SSherry.Moore@Sun.COM (ops->devo_rev < 4) || ((fn = ops->devo_quiesce) == NULL))
2717656SSherry.Moore@Sun.COM return (DDI_FAILURE);
2727656SSherry.Moore@Sun.COM
2737656SSherry.Moore@Sun.COM return ((*fn)(devi));
2747656SSherry.Moore@Sun.COM }
2757656SSherry.Moore@Sun.COM
2760Sstevel@tonic-gate /*
2770Sstevel@tonic-gate * Leaf driver entry points. The following [cb]dev_* functions are *not* part
2780Sstevel@tonic-gate * of the DDI, please use functions defined in <sys/sunldi.h> and driver_lyr.c.
2790Sstevel@tonic-gate */
2800Sstevel@tonic-gate int
dev_open(dev_t * devp,int flag,int type,struct cred * cred)2810Sstevel@tonic-gate dev_open(dev_t *devp, int flag, int type, struct cred *cred)
2820Sstevel@tonic-gate {
2830Sstevel@tonic-gate struct cb_ops *cb;
2840Sstevel@tonic-gate
2850Sstevel@tonic-gate cb = devopsp[getmajor(*devp)]->devo_cb_ops;
2860Sstevel@tonic-gate return ((*cb->cb_open)(devp, flag, type, cred));
2870Sstevel@tonic-gate }
2880Sstevel@tonic-gate
2890Sstevel@tonic-gate int
dev_close(dev_t dev,int flag,int type,struct cred * cred)2900Sstevel@tonic-gate dev_close(dev_t dev, int flag, int type, struct cred *cred)
2910Sstevel@tonic-gate {
2920Sstevel@tonic-gate struct cb_ops *cb;
2930Sstevel@tonic-gate
2940Sstevel@tonic-gate cb = (devopsp[getmajor(dev)])->devo_cb_ops;
2950Sstevel@tonic-gate return ((*cb->cb_close)(dev, flag, type, cred));
2960Sstevel@tonic-gate }
2970Sstevel@tonic-gate
2980Sstevel@tonic-gate /*
2990Sstevel@tonic-gate * New Leaf driver open entry point. We make a vnode and go through specfs
3000Sstevel@tonic-gate * in order to obtain open close exclusions guarantees. Note that we drop
3010Sstevel@tonic-gate * OTYP_LYR if it was specified - we are going through specfs and it provides
3020Sstevel@tonic-gate * last close semantics (FKLYR is provided to open(9E)). Also, since
3030Sstevel@tonic-gate * spec_open will drive attach via e_ddi_hold_devi_by_dev for a makespecvp
3040Sstevel@tonic-gate * vnode with no SDIP_SET on the common snode, the dev_lopen caller no longer
3050Sstevel@tonic-gate * needs to call ddi_hold_installed_driver.
3060Sstevel@tonic-gate */
3070Sstevel@tonic-gate int
dev_lopen(dev_t * devp,int flag,int otype,struct cred * cred)3080Sstevel@tonic-gate dev_lopen(dev_t *devp, int flag, int otype, struct cred *cred)
3090Sstevel@tonic-gate {
3100Sstevel@tonic-gate struct vnode *vp;
3110Sstevel@tonic-gate int error;
3120Sstevel@tonic-gate struct vnode *cvp;
3130Sstevel@tonic-gate
3140Sstevel@tonic-gate vp = makespecvp(*devp, (otype == OTYP_BLK) ? VBLK : VCHR);
3155331Samw error = VOP_OPEN(&vp, flag | FKLYR, cred, NULL);
3160Sstevel@tonic-gate if (error == 0) {
3170Sstevel@tonic-gate /* Pick up the (possibly) new dev_t value. */
3180Sstevel@tonic-gate *devp = vp->v_rdev;
3190Sstevel@tonic-gate
3200Sstevel@tonic-gate /*
3210Sstevel@tonic-gate * Place extra hold on the common vnode, which contains the
3220Sstevel@tonic-gate * open count, so that it is not destroyed by the VN_RELE of
3230Sstevel@tonic-gate * the shadow makespecvp vnode below.
3240Sstevel@tonic-gate */
3250Sstevel@tonic-gate cvp = STOV(VTOCS(vp));
3260Sstevel@tonic-gate VN_HOLD(cvp);
3270Sstevel@tonic-gate }
3280Sstevel@tonic-gate
3290Sstevel@tonic-gate /* release the shadow makespecvp vnode. */
3300Sstevel@tonic-gate VN_RELE(vp);
3310Sstevel@tonic-gate return (error);
3320Sstevel@tonic-gate }
3330Sstevel@tonic-gate
3340Sstevel@tonic-gate /*
3350Sstevel@tonic-gate * Leaf driver close entry point. We make a vnode and go through specfs in
3360Sstevel@tonic-gate * order to obtain open close exclusions guarantees. Note that we drop
3370Sstevel@tonic-gate * OTYP_LYR if it was specified - we are going through specfs and it provides
3380Sstevel@tonic-gate * last close semantics (FLKYR is provided to close(9E)).
3390Sstevel@tonic-gate */
3400Sstevel@tonic-gate int
dev_lclose(dev_t dev,int flag,int otype,struct cred * cred)3410Sstevel@tonic-gate dev_lclose(dev_t dev, int flag, int otype, struct cred *cred)
3420Sstevel@tonic-gate {
3430Sstevel@tonic-gate struct vnode *vp;
3440Sstevel@tonic-gate int error;
3450Sstevel@tonic-gate struct vnode *cvp;
3460Sstevel@tonic-gate char *funcname;
3470Sstevel@tonic-gate ulong_t offset;
3480Sstevel@tonic-gate
3490Sstevel@tonic-gate vp = makespecvp(dev, (otype == OTYP_BLK) ? VBLK : VCHR);
3505331Samw error = VOP_CLOSE(vp, flag | FKLYR, 1, (offset_t)0, cred, NULL);
3510Sstevel@tonic-gate
3520Sstevel@tonic-gate /*
3530Sstevel@tonic-gate * Release the extra dev_lopen hold on the common vnode. We inline a
3540Sstevel@tonic-gate * VN_RELE(cvp) call so that we can detect more dev_lclose calls than
3550Sstevel@tonic-gate * dev_lopen calls without panic. See vn_rele. If our inline of
3565331Samw * vn_rele called VOP_INACTIVE(cvp, CRED(), ...) we would panic on the
3570Sstevel@tonic-gate * "release the makespecvp vnode" VN_RELE(vp) that follows - so
3580Sstevel@tonic-gate * instead we diagnose this situation. Note that the driver has
3590Sstevel@tonic-gate * still seen a double close(9E), but that would have occurred with
3600Sstevel@tonic-gate * the old dev_close implementation too.
3610Sstevel@tonic-gate */
3620Sstevel@tonic-gate cvp = STOV(VTOCS(vp));
3630Sstevel@tonic-gate mutex_enter(&cvp->v_lock);
3640Sstevel@tonic-gate switch (cvp->v_count) {
3650Sstevel@tonic-gate default:
3660Sstevel@tonic-gate cvp->v_count--;
3670Sstevel@tonic-gate break;
3680Sstevel@tonic-gate
3690Sstevel@tonic-gate case 0:
3700Sstevel@tonic-gate VTOS(vp)->s_commonvp = NULL; /* avoid panic */
3710Sstevel@tonic-gate /*FALLTHROUGH*/
3720Sstevel@tonic-gate case 1:
3730Sstevel@tonic-gate /*
3740Sstevel@tonic-gate * The following message indicates a serious problem in the
3750Sstevel@tonic-gate * identified driver, the driver should be fixed. If obtaining
3760Sstevel@tonic-gate * a panic dump is needed to diagnose the driver problem then
3770Sstevel@tonic-gate * adding "set dev_lclose_ce=3" to /etc/system will cause a
3780Sstevel@tonic-gate * panic when this occurs.
3790Sstevel@tonic-gate */
3800Sstevel@tonic-gate funcname = modgetsymname((uintptr_t)caller(), &offset);
3810Sstevel@tonic-gate cmn_err(dev_lclose_ce, "dev_lclose: extra close of dev_t 0x%lx "
3820Sstevel@tonic-gate "from %s`%s()", dev, mod_containing_pc(caller()),
3830Sstevel@tonic-gate funcname ? funcname : "unknown...");
3840Sstevel@tonic-gate break;
3850Sstevel@tonic-gate }
3860Sstevel@tonic-gate mutex_exit(&cvp->v_lock);
3870Sstevel@tonic-gate
3880Sstevel@tonic-gate /* release the makespecvp vnode. */
3890Sstevel@tonic-gate VN_RELE(vp);
3900Sstevel@tonic-gate return (error);
3910Sstevel@tonic-gate }
3920Sstevel@tonic-gate
3930Sstevel@tonic-gate /*
3940Sstevel@tonic-gate * Returns -1 or the instance number of the given dev_t as
3950Sstevel@tonic-gate * interpreted by the device driver. The code may load the driver
3960Sstevel@tonic-gate * but it does not attach any instances.
3970Sstevel@tonic-gate *
3980Sstevel@tonic-gate * Instance is supposed to be a int but drivers have assumed that
3990Sstevel@tonic-gate * the pointer was a pointer to "void *" instead of a pointer to
4000Sstevel@tonic-gate * "int *" so we now explicitly pass a pointer to "void *" and then
4010Sstevel@tonic-gate * cast the result to an int when returning the value.
4020Sstevel@tonic-gate */
4030Sstevel@tonic-gate int
dev_to_instance(dev_t dev)4040Sstevel@tonic-gate dev_to_instance(dev_t dev)
4050Sstevel@tonic-gate {
4060Sstevel@tonic-gate major_t major = getmajor(dev);
4070Sstevel@tonic-gate struct dev_ops *ops;
4080Sstevel@tonic-gate void *vinstance;
4090Sstevel@tonic-gate int error;
4100Sstevel@tonic-gate
41110842SJerry.Gilliam@Sun.COM /* verify that the driver is loaded */
41210842SJerry.Gilliam@Sun.COM if ((ops = mod_hold_dev_by_major(major)) == NULL)
4130Sstevel@tonic-gate return (-1);
4140Sstevel@tonic-gate ASSERT(CB_DRV_INSTALLED(ops));
4150Sstevel@tonic-gate
4160Sstevel@tonic-gate /* verify that it supports the getinfo(9E) entry point */
4170Sstevel@tonic-gate if (ops->devo_getinfo == NULL) {
4180Sstevel@tonic-gate mod_rele_dev_by_major(major);
4190Sstevel@tonic-gate return (-1);
4200Sstevel@tonic-gate }
4210Sstevel@tonic-gate
4220Sstevel@tonic-gate /* ask the driver to extract the instance number from the devt */
4230Sstevel@tonic-gate error = (*ops->devo_getinfo)(NULL, DDI_INFO_DEVT2INSTANCE,
4240Sstevel@tonic-gate (void *)dev, &vinstance);
4250Sstevel@tonic-gate
4260Sstevel@tonic-gate /* release the driver */
4270Sstevel@tonic-gate mod_rele_dev_by_major(major);
4280Sstevel@tonic-gate
4290Sstevel@tonic-gate if (error != DDI_SUCCESS)
4300Sstevel@tonic-gate return (-1);
4310Sstevel@tonic-gate
4320Sstevel@tonic-gate return ((int)(uintptr_t)vinstance);
4330Sstevel@tonic-gate }
4340Sstevel@tonic-gate
4350Sstevel@tonic-gate static void
bdev_strategy_tnf_probe(struct buf * bp)4360Sstevel@tonic-gate bdev_strategy_tnf_probe(struct buf *bp)
4370Sstevel@tonic-gate {
4380Sstevel@tonic-gate /* Kernel probe */
4390Sstevel@tonic-gate TNF_PROBE_5(strategy, "io blockio", /* CSTYLED */,
4404582Scth tnf_device, device, bp->b_edev,
4414582Scth tnf_diskaddr, block, bp->b_lblkno,
4424582Scth tnf_size, size, bp->b_bcount,
4434582Scth tnf_opaque, buf, bp,
4444582Scth tnf_bioflags, flags, bp->b_flags);
4450Sstevel@tonic-gate }
4460Sstevel@tonic-gate
4470Sstevel@tonic-gate int
bdev_strategy(struct buf * bp)4480Sstevel@tonic-gate bdev_strategy(struct buf *bp)
4490Sstevel@tonic-gate {
4500Sstevel@tonic-gate struct dev_ops *ops;
4510Sstevel@tonic-gate
4520Sstevel@tonic-gate ops = devopsp[getmajor(bp->b_edev)];
4530Sstevel@tonic-gate
4540Sstevel@tonic-gate /*
4550Sstevel@tonic-gate * Before we hit the io:::start probe, we need to fill in the b_dip
4560Sstevel@tonic-gate * field of the buf structure. This should be -- for the most part --
4570Sstevel@tonic-gate * incredibly cheap. If you're in this code looking to bum cycles,
4580Sstevel@tonic-gate * there is almost certainly bigger game further down the I/O path...
4590Sstevel@tonic-gate */
4600Sstevel@tonic-gate (void) ops->devo_getinfo(NULL, DDI_INFO_DEVT2DEVINFO,
4610Sstevel@tonic-gate (void *)bp->b_edev, (void **)&bp->b_dip);
4620Sstevel@tonic-gate
4630Sstevel@tonic-gate DTRACE_IO1(start, struct buf *, bp);
4640Sstevel@tonic-gate bp->b_flags |= B_STARTED;
4650Sstevel@tonic-gate
4660Sstevel@tonic-gate /*
4670Sstevel@tonic-gate * Call the TNF probe here instead of the inline code
4680Sstevel@tonic-gate * to force our compiler to use the tail call optimization.
4690Sstevel@tonic-gate */
4700Sstevel@tonic-gate bdev_strategy_tnf_probe(bp);
4710Sstevel@tonic-gate
4720Sstevel@tonic-gate return (ops->devo_cb_ops->cb_strategy(bp));
4730Sstevel@tonic-gate }
4740Sstevel@tonic-gate
4750Sstevel@tonic-gate int
bdev_print(dev_t dev,caddr_t str)4760Sstevel@tonic-gate bdev_print(dev_t dev, caddr_t str)
4770Sstevel@tonic-gate {
4780Sstevel@tonic-gate struct cb_ops *cb;
4790Sstevel@tonic-gate
4800Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops;
4810Sstevel@tonic-gate return ((*cb->cb_print)(dev, str));
4820Sstevel@tonic-gate }
4830Sstevel@tonic-gate
4844582Scth /*
4854582Scth * Return number of DEV_BSIZE byte blocks.
4864582Scth */
4870Sstevel@tonic-gate int
bdev_size(dev_t dev)4880Sstevel@tonic-gate bdev_size(dev_t dev)
4890Sstevel@tonic-gate {
4904582Scth uint_t nblocks;
4914582Scth uint_t blksize;
4924582Scth
4934582Scth if ((nblocks = e_ddi_getprop(dev, VBLK, "nblocks",
4944582Scth DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, -1)) == -1)
4954582Scth return (-1);
4964582Scth
4974582Scth /* Get blksize, default to DEV_BSIZE */
4984582Scth if ((blksize = e_ddi_getprop(dev, VBLK, "blksize",
4994582Scth DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, -1)) == -1)
5004582Scth blksize = e_ddi_getprop(DDI_DEV_T_ANY, VBLK, "device-blksize",
5014582Scth DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, DEV_BSIZE);
5024582Scth
5034582Scth if (blksize >= DEV_BSIZE)
5044582Scth return (nblocks * (blksize / DEV_BSIZE));
5054582Scth else
5064582Scth return (nblocks / (DEV_BSIZE / blksize));
5070Sstevel@tonic-gate }
5080Sstevel@tonic-gate
5090Sstevel@tonic-gate /*
5100Sstevel@tonic-gate * Same for 64-bit Nblocks property
5110Sstevel@tonic-gate */
5120Sstevel@tonic-gate uint64_t
bdev_Size(dev_t dev)5130Sstevel@tonic-gate bdev_Size(dev_t dev)
5140Sstevel@tonic-gate {
5154582Scth uint64_t nblocks;
5164582Scth uint_t blksize;
5174582Scth
5184582Scth if ((nblocks = e_ddi_getprop_int64(dev, VBLK, "Nblocks",
5194582Scth DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, -1)) == -1)
5204582Scth return (-1);
5214582Scth
5224582Scth /* Get blksize, default to DEV_BSIZE */
5234582Scth if ((blksize = e_ddi_getprop(dev, VBLK, "blksize",
5244582Scth DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, -1)) == -1)
5254582Scth blksize = e_ddi_getprop(DDI_DEV_T_ANY, VBLK, "device-blksize",
5264582Scth DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, DEV_BSIZE);
5274582Scth
5284582Scth if (blksize >= DEV_BSIZE)
5294582Scth return (nblocks * (blksize / DEV_BSIZE));
5304582Scth else
5314582Scth return (nblocks / (DEV_BSIZE / blksize));
5320Sstevel@tonic-gate }
5330Sstevel@tonic-gate
5340Sstevel@tonic-gate int
bdev_dump(dev_t dev,caddr_t addr,daddr_t blkno,int blkcnt)5350Sstevel@tonic-gate bdev_dump(dev_t dev, caddr_t addr, daddr_t blkno, int blkcnt)
5360Sstevel@tonic-gate {
5370Sstevel@tonic-gate struct cb_ops *cb;
5380Sstevel@tonic-gate
5390Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops;
5400Sstevel@tonic-gate return ((*cb->cb_dump)(dev, addr, blkno, blkcnt));
5410Sstevel@tonic-gate }
5420Sstevel@tonic-gate
5430Sstevel@tonic-gate int
cdev_read(dev_t dev,struct uio * uiop,struct cred * cred)5440Sstevel@tonic-gate cdev_read(dev_t dev, struct uio *uiop, struct cred *cred)
5450Sstevel@tonic-gate {
5460Sstevel@tonic-gate struct cb_ops *cb;
5470Sstevel@tonic-gate
5480Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops;
5490Sstevel@tonic-gate return ((*cb->cb_read)(dev, uiop, cred));
5500Sstevel@tonic-gate }
5510Sstevel@tonic-gate
5520Sstevel@tonic-gate int
cdev_write(dev_t dev,struct uio * uiop,struct cred * cred)5530Sstevel@tonic-gate cdev_write(dev_t dev, struct uio *uiop, struct cred *cred)
5540Sstevel@tonic-gate {
5550Sstevel@tonic-gate struct cb_ops *cb;
5560Sstevel@tonic-gate
5570Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops;
5580Sstevel@tonic-gate return ((*cb->cb_write)(dev, uiop, cred));
5590Sstevel@tonic-gate }
5600Sstevel@tonic-gate
5610Sstevel@tonic-gate int
cdev_ioctl(dev_t dev,int cmd,intptr_t arg,int mode,struct cred * cred,int * rvalp)5620Sstevel@tonic-gate cdev_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, struct cred *cred,
5630Sstevel@tonic-gate int *rvalp)
5640Sstevel@tonic-gate {
5650Sstevel@tonic-gate struct cb_ops *cb;
5660Sstevel@tonic-gate
5670Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops;
5680Sstevel@tonic-gate return ((*cb->cb_ioctl)(dev, cmd, arg, mode, cred, rvalp));
5690Sstevel@tonic-gate }
5700Sstevel@tonic-gate
5710Sstevel@tonic-gate int
cdev_devmap(dev_t dev,devmap_cookie_t dhp,offset_t off,size_t len,size_t * maplen,uint_t mode)5720Sstevel@tonic-gate cdev_devmap(dev_t dev, devmap_cookie_t dhp, offset_t off, size_t len,
5730Sstevel@tonic-gate size_t *maplen, uint_t mode)
5740Sstevel@tonic-gate {
5750Sstevel@tonic-gate struct cb_ops *cb;
5760Sstevel@tonic-gate
5770Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops;
5780Sstevel@tonic-gate return ((*cb->cb_devmap)(dev, dhp, off, len, maplen, mode));
5790Sstevel@tonic-gate }
5800Sstevel@tonic-gate
5810Sstevel@tonic-gate int
cdev_mmap(int (* mapfunc)(dev_t,off_t,int),dev_t dev,off_t off,int prot)5820Sstevel@tonic-gate cdev_mmap(int (*mapfunc)(dev_t, off_t, int), dev_t dev, off_t off, int prot)
5830Sstevel@tonic-gate {
5840Sstevel@tonic-gate return ((*mapfunc)(dev, off, prot));
5850Sstevel@tonic-gate }
5860Sstevel@tonic-gate
5870Sstevel@tonic-gate int
cdev_segmap(dev_t dev,off_t off,struct as * as,caddr_t * addrp,off_t len,uint_t prot,uint_t maxprot,uint_t flags,cred_t * credp)5880Sstevel@tonic-gate cdev_segmap(dev_t dev, off_t off, struct as *as, caddr_t *addrp, off_t len,
5890Sstevel@tonic-gate uint_t prot, uint_t maxprot, uint_t flags, cred_t *credp)
5900Sstevel@tonic-gate {
5910Sstevel@tonic-gate struct cb_ops *cb;
5920Sstevel@tonic-gate
5930Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops;
5940Sstevel@tonic-gate return ((*cb->cb_segmap)(dev, off, as, addrp,
5950Sstevel@tonic-gate len, prot, maxprot, flags, credp));
5960Sstevel@tonic-gate }
5970Sstevel@tonic-gate
5980Sstevel@tonic-gate int
cdev_poll(dev_t dev,short events,int anyyet,short * reventsp,struct pollhead ** pollhdrp)5990Sstevel@tonic-gate cdev_poll(dev_t dev, short events, int anyyet, short *reventsp,
6000Sstevel@tonic-gate struct pollhead **pollhdrp)
6010Sstevel@tonic-gate {
6020Sstevel@tonic-gate struct cb_ops *cb;
6030Sstevel@tonic-gate
6040Sstevel@tonic-gate cb = devopsp[getmajor(dev)]->devo_cb_ops;
6050Sstevel@tonic-gate return ((*cb->cb_chpoll)(dev, events, anyyet, reventsp, pollhdrp));
6060Sstevel@tonic-gate }
6070Sstevel@tonic-gate
6080Sstevel@tonic-gate /*
6090Sstevel@tonic-gate * A 'size' property can be provided by a VCHR device.
6100Sstevel@tonic-gate *
6110Sstevel@tonic-gate * Since it's defined as zero for STREAMS devices, so we avoid the
6120Sstevel@tonic-gate * overhead of looking it up. Note also that we don't force an
6130Sstevel@tonic-gate * unused driver into memory simply to ask about it's size. We also
6140Sstevel@tonic-gate * don't bother to ask it its size unless it's already been attached
6150Sstevel@tonic-gate * (the attach routine is the earliest place the property will be created)
6160Sstevel@tonic-gate *
6170Sstevel@tonic-gate * XXX In an ideal world, we'd call this at VOP_GETATTR() time.
6180Sstevel@tonic-gate */
6190Sstevel@tonic-gate int
cdev_size(dev_t dev)6200Sstevel@tonic-gate cdev_size(dev_t dev)
6210Sstevel@tonic-gate {
6220Sstevel@tonic-gate major_t maj;
6230Sstevel@tonic-gate struct devnames *dnp;
6240Sstevel@tonic-gate
6250Sstevel@tonic-gate if ((maj = getmajor(dev)) >= devcnt)
6260Sstevel@tonic-gate return (0);
6270Sstevel@tonic-gate
6280Sstevel@tonic-gate dnp = &(devnamesp[maj]);
6290Sstevel@tonic-gate LOCK_DEV_OPS(&dnp->dn_lock);
6300Sstevel@tonic-gate if (devopsp[maj] && devopsp[maj]->devo_cb_ops &&
6310Sstevel@tonic-gate !devopsp[maj]->devo_cb_ops->cb_str) {
6320Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock);
6330Sstevel@tonic-gate return (e_ddi_getprop(dev, VCHR, "size",
6340Sstevel@tonic-gate DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, 0));
6350Sstevel@tonic-gate }
6360Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock);
6370Sstevel@tonic-gate return (0);
6380Sstevel@tonic-gate }
6390Sstevel@tonic-gate
6400Sstevel@tonic-gate /*
6410Sstevel@tonic-gate * same for 64-bit Size property
6420Sstevel@tonic-gate */
6430Sstevel@tonic-gate uint64_t
cdev_Size(dev_t dev)6440Sstevel@tonic-gate cdev_Size(dev_t dev)
6450Sstevel@tonic-gate {
6460Sstevel@tonic-gate major_t maj;
6470Sstevel@tonic-gate struct devnames *dnp;
6480Sstevel@tonic-gate
6490Sstevel@tonic-gate if ((maj = getmajor(dev)) >= devcnt)
6500Sstevel@tonic-gate return (0);
6510Sstevel@tonic-gate
6520Sstevel@tonic-gate dnp = &(devnamesp[maj]);
6530Sstevel@tonic-gate LOCK_DEV_OPS(&dnp->dn_lock);
6540Sstevel@tonic-gate if (devopsp[maj] && devopsp[maj]->devo_cb_ops &&
6550Sstevel@tonic-gate !devopsp[maj]->devo_cb_ops->cb_str) {
6560Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock);
6570Sstevel@tonic-gate return (e_ddi_getprop_int64(dev, VCHR, "Size",
6580Sstevel@tonic-gate DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, 0));
6590Sstevel@tonic-gate }
6600Sstevel@tonic-gate UNLOCK_DEV_OPS(&dnp->dn_lock);
6610Sstevel@tonic-gate return (0);
6620Sstevel@tonic-gate }
6630Sstevel@tonic-gate
6640Sstevel@tonic-gate /*
6650Sstevel@tonic-gate * XXX This routine is poorly named, because block devices can and do
6660Sstevel@tonic-gate * have properties (see bdev_size() above).
6670Sstevel@tonic-gate *
6680Sstevel@tonic-gate * XXX fix the comment in devops.h that claims that cb_prop_op
6690Sstevel@tonic-gate * is character-only.
6700Sstevel@tonic-gate */
6710Sstevel@tonic-gate int
cdev_prop_op(dev_t dev,dev_info_t * dip,ddi_prop_op_t prop_op,int mod_flags,char * name,caddr_t valuep,int * lengthp)6720Sstevel@tonic-gate cdev_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, int mod_flags,
6730Sstevel@tonic-gate char *name, caddr_t valuep, int *lengthp)
6740Sstevel@tonic-gate {
6750Sstevel@tonic-gate struct cb_ops *cb;
6760Sstevel@tonic-gate
6770Sstevel@tonic-gate if ((cb = devopsp[DEVI(dip)->devi_major]->devo_cb_ops) == NULL)
6780Sstevel@tonic-gate return (DDI_PROP_NOT_FOUND);
6790Sstevel@tonic-gate
6800Sstevel@tonic-gate return ((*cb->cb_prop_op)(dev, dip, prop_op, mod_flags,
6810Sstevel@tonic-gate name, valuep, lengthp));
6820Sstevel@tonic-gate }
683