/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Local Static Data */ #ifdef CMDK_DEBUG #define DENT 0x0001 #define DIO 0x0002 static int cmdk_debug = DIO; #endif #ifndef TRUE #define TRUE 1 #endif #ifndef FALSE #define FALSE 0 #endif /* * NDKMAP is the base number for accessing the fdisk partitions. * c?d?p0 --> cmdk@?,?:q */ #define PARTITION0_INDEX (NDKMAP + 0) #define DKTP_DATA (dkp->dk_tgobjp)->tg_data #define DKTP_EXT (dkp->dk_tgobjp)->tg_ext static void *cmdk_state; /* * the cmdk_attach_mutex protects cmdk_max_instance in multi-threaded * attach situations */ static kmutex_t cmdk_attach_mutex; static int cmdk_max_instance = 0; /* * Panic dumpsys state * There is only a single flag that is not mutex locked since * the system is prevented from thread switching and cmdk_dump * will only be called in a single threaded operation. */ static int cmdk_indump; /* * Local Function Prototypes */ static int cmdk_create_obj(dev_info_t *dip, struct cmdk *dkp); static void cmdk_destroy_obj(dev_info_t *dip, struct cmdk *dkp); static void cmdkmin(struct buf *bp); static int cmdkrw(dev_t dev, struct uio *uio, int flag); static int cmdkarw(dev_t dev, struct aio_req *aio, int flag); /* * Bad Block Handling Functions Prototypes */ static void cmdk_bbh_reopen(struct cmdk *dkp); static opaque_t cmdk_bbh_gethandle(opaque_t bbh_data, struct buf *bp); static bbh_cookie_t cmdk_bbh_htoc(opaque_t bbh_data, opaque_t handle); static void cmdk_bbh_freehandle(opaque_t bbh_data, opaque_t handle); static void cmdk_bbh_close(struct cmdk *dkp); static void cmdk_bbh_setalts_idx(struct cmdk *dkp); static int cmdk_bbh_bsearch(struct alts_ent *buf, int cnt, daddr32_t key); static struct bbh_objops cmdk_bbh_ops = { nulldev, nulldev, cmdk_bbh_gethandle, cmdk_bbh_htoc, cmdk_bbh_freehandle, 0, 0 }; static int cmdkopen(dev_t *dev_p, int flag, int otyp, cred_t *credp); static int cmdkclose(dev_t dev, int flag, int otyp, cred_t *credp); static int cmdkstrategy(struct buf *bp); static int cmdkdump(dev_t dev, caddr_t addr, daddr_t blkno, int nblk); static int cmdkioctl(dev_t, int, intptr_t, int, cred_t *, int *); static int cmdkread(dev_t dev, struct uio *uio, cred_t *credp); static int cmdkwrite(dev_t dev, struct uio *uio, cred_t *credp); static int cmdk_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); static int cmdkaread(dev_t dev, struct aio_req *aio, cred_t *credp); static int cmdkawrite(dev_t dev, struct aio_req *aio, cred_t *credp); /* * Device driver ops vector */ static struct cb_ops cmdk_cb_ops = { cmdkopen, /* open */ cmdkclose, /* close */ cmdkstrategy, /* strategy */ nodev, /* print */ cmdkdump, /* dump */ cmdkread, /* read */ cmdkwrite, /* write */ cmdkioctl, /* ioctl */ nodev, /* devmap */ nodev, /* mmap */ nodev, /* segmap */ nochpoll, /* poll */ cmdk_prop_op, /* cb_prop_op */ 0, /* streamtab */ D_64BIT | D_MP | D_NEW, /* Driver comaptibility flag */ CB_REV, /* cb_rev */ cmdkaread, /* async read */ cmdkawrite /* async write */ }; static int cmdkinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result); static int cmdkprobe(dev_info_t *dip); static int cmdkattach(dev_info_t *dip, ddi_attach_cmd_t cmd); static int cmdkdetach(dev_info_t *dip, ddi_detach_cmd_t cmd); static void cmdk_setup_pm(dev_info_t *dip, struct cmdk *dkp); static int cmdkresume(dev_info_t *dip); static int cmdksuspend(dev_info_t *dip); static int cmdkpower(dev_info_t *dip, int component, int level); struct dev_ops cmdk_ops = { DEVO_REV, /* devo_rev, */ 0, /* refcnt */ cmdkinfo, /* info */ nulldev, /* identify */ cmdkprobe, /* probe */ cmdkattach, /* attach */ cmdkdetach, /* detach */ nodev, /* reset */ &cmdk_cb_ops, /* driver operations */ (struct bus_ops *)0, /* bus operations */ cmdkpower /* power */ }; /* * This is the loadable module wrapper. */ #include extern struct mod_ops mod_driverops; static struct modldrv modldrv = { &mod_driverops, /* Type of module. This one is a driver */ "Common Direct Access Disk", &cmdk_ops, /* driver ops */ }; static struct modlinkage modlinkage = { MODREV_1, (void *)&modldrv, NULL }; /* Function prototypes for cmlb callbacks */ static int cmdk_lb_rdwr(dev_info_t *dip, uchar_t cmd, void *bufaddr, diskaddr_t start, size_t length, void *tg_cookie); static int cmdk_lb_getinfo(dev_info_t *dip, int cmd, void *arg, void *tg_cookie); static void cmdk_devid_setup(struct cmdk *dkp); static int cmdk_devid_modser(struct cmdk *dkp); static int cmdk_get_modser(struct cmdk *dkp, int ioccmd, char *buf, int len); static int cmdk_devid_fabricate(struct cmdk *dkp); static int cmdk_devid_read(struct cmdk *dkp); static cmlb_tg_ops_t cmdk_lb_ops = { TG_DK_OPS_VERSION_1, cmdk_lb_rdwr, cmdk_lb_getinfo }; static boolean_t cmdk_isopen(struct cmdk *dkp, dev_t dev) { int part, otyp; ulong_t partbit; ASSERT(MUTEX_HELD((&dkp->dk_mutex))); part = CMDKPART(dev); partbit = 1 << part; /* account for close */ if (dkp->dk_open_lyr[part] != 0) return (B_TRUE); for (otyp = 0; otyp < OTYPCNT; otyp++) if (dkp->dk_open_reg[otyp] & partbit) return (B_TRUE); return (B_FALSE); } int _init(void) { int rval; if (rval = ddi_soft_state_init(&cmdk_state, sizeof (struct cmdk), 7)) return (rval); mutex_init(&cmdk_attach_mutex, NULL, MUTEX_DRIVER, NULL); if ((rval = mod_install(&modlinkage)) != 0) { mutex_destroy(&cmdk_attach_mutex); ddi_soft_state_fini(&cmdk_state); } return (rval); } int _fini(void) { return (EBUSY); /* * This has been commented out until cmdk is a true * unloadable module. Right now x86's are panicking on * a diskless reconfig boot. */ #if 0 /* bugid 1186679 */ int rval; rval = mod_remove(&modlinkage); if (rval != 0) return (rval); mutex_destroy(&cmdk_attach_mutex); ddi_soft_state_fini(&cmdk_state); return (0); #endif } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } /* * Autoconfiguration Routines */ static int cmdkprobe(dev_info_t *dip) { int instance; int status; struct cmdk *dkp; instance = ddi_get_instance(dip); if (ddi_get_soft_state(cmdk_state, instance)) return (DDI_PROBE_PARTIAL); if ((ddi_soft_state_zalloc(cmdk_state, instance) != DDI_SUCCESS) || ((dkp = ddi_get_soft_state(cmdk_state, instance)) == NULL)) return (DDI_PROBE_PARTIAL); mutex_init(&dkp->dk_mutex, NULL, MUTEX_DRIVER, NULL); rw_init(&dkp->dk_bbh_mutex, NULL, RW_DRIVER, NULL); dkp->dk_dip = dip; mutex_enter(&dkp->dk_mutex); dkp->dk_dev = makedevice(ddi_driver_major(dip), ddi_get_instance(dip) << CMDK_UNITSHF); /* linkage to dadk and strategy */ if (cmdk_create_obj(dip, dkp) != DDI_SUCCESS) { mutex_exit(&dkp->dk_mutex); mutex_destroy(&dkp->dk_mutex); rw_destroy(&dkp->dk_bbh_mutex); ddi_soft_state_free(cmdk_state, instance); return (DDI_PROBE_PARTIAL); } status = dadk_probe(DKTP_DATA, KM_NOSLEEP); if (status != DDI_PROBE_SUCCESS) { cmdk_destroy_obj(dip, dkp); /* dadk/strategy linkage */ mutex_exit(&dkp->dk_mutex); mutex_destroy(&dkp->dk_mutex); rw_destroy(&dkp->dk_bbh_mutex); ddi_soft_state_free(cmdk_state, instance); return (status); } mutex_exit(&dkp->dk_mutex); #ifdef CMDK_DEBUG if (cmdk_debug & DENT) PRF("cmdkprobe: instance= %d name= `%s`\n", instance, ddi_get_name_addr(dip)); #endif return (status); } static int cmdkattach(dev_info_t *dip, ddi_attach_cmd_t cmd) { int instance; struct cmdk *dkp; char *node_type; switch (cmd) { case DDI_ATTACH: break; case DDI_RESUME: return (cmdkresume(dip)); default: return (DDI_FAILURE); } instance = ddi_get_instance(dip); if (!(dkp = ddi_get_soft_state(cmdk_state, instance))) return (DDI_FAILURE); dkp->dk_pm_level = CMDK_SPINDLE_UNINIT; mutex_init(&dkp->dk_mutex, NULL, MUTEX_DRIVER, NULL); mutex_enter(&dkp->dk_mutex); /* dadk_attach is an empty function that only returns SUCCESS */ (void) dadk_attach(DKTP_DATA); node_type = (DKTP_EXT->tg_nodetype); /* * this open allows cmlb to read the device * and determine the label types * so that cmlb can create minor nodes for device */ /* open the target disk */ if (dadk_open(DKTP_DATA, 0) != DDI_SUCCESS) goto fail2; /* mark as having opened target */ dkp->dk_flag |= CMDK_TGDK_OPEN; cmlb_alloc_handle((cmlb_handle_t *)&dkp->dk_cmlbhandle); if (cmlb_attach(dip, &cmdk_lb_ops, DTYPE_DIRECT, /* device_type */ 0, /* removable */ 0, /* hot pluggable XXX */ node_type, CMLB_CREATE_ALTSLICE_VTOC_16_DTYPE_DIRECT, /* alter_behaviour */ dkp->dk_cmlbhandle, 0) != 0) goto fail1; /* Calling validate will create minor nodes according to disk label */ (void) cmlb_validate(dkp->dk_cmlbhandle, 0, 0); /* set bbh (Bad Block Handling) */ cmdk_bbh_reopen(dkp); /* setup devid string */ cmdk_devid_setup(dkp); mutex_enter(&cmdk_attach_mutex); if (instance > cmdk_max_instance) cmdk_max_instance = instance; mutex_exit(&cmdk_attach_mutex); mutex_exit(&dkp->dk_mutex); /* * Add a zero-length attribute to tell the world we support * kernel ioctls (for layered drivers) */ (void) ddi_prop_create(DDI_DEV_T_NONE, dip, DDI_PROP_CANSLEEP, DDI_KERNEL_IOCTL, NULL, 0); ddi_report_dev(dip); /* * Initialize power management */ mutex_init(&dkp->dk_pm_mutex, NULL, MUTEX_DRIVER, NULL); cv_init(&dkp->dk_suspend_cv, NULL, CV_DRIVER, NULL); cmdk_setup_pm(dip, dkp); return (DDI_SUCCESS); fail1: cmlb_free_handle(&dkp->dk_cmlbhandle); (void) dadk_close(DKTP_DATA); fail2: cmdk_destroy_obj(dip, dkp); rw_destroy(&dkp->dk_bbh_mutex); mutex_exit(&dkp->dk_mutex); mutex_destroy(&dkp->dk_mutex); ddi_soft_state_free(cmdk_state, instance); return (DDI_FAILURE); } static int cmdkdetach(dev_info_t *dip, ddi_detach_cmd_t cmd) { struct cmdk *dkp; int instance; int max_instance; switch (cmd) { case DDI_DETACH: /* return (DDI_FAILURE); */ break; case DDI_SUSPEND: return (cmdksuspend(dip)); default: #ifdef CMDK_DEBUG if (cmdk_debug & DIO) { PRF("cmdkdetach: cmd = %d unknown\n", cmd); } #endif return (DDI_FAILURE); } mutex_enter(&cmdk_attach_mutex); max_instance = cmdk_max_instance; mutex_exit(&cmdk_attach_mutex); /* check if any instance of driver is open */ for (instance = 0; instance < max_instance; instance++) { dkp = ddi_get_soft_state(cmdk_state, instance); if (!dkp) continue; if (dkp->dk_flag & CMDK_OPEN) return (DDI_FAILURE); } instance = ddi_get_instance(dip); if (!(dkp = ddi_get_soft_state(cmdk_state, instance))) return (DDI_SUCCESS); mutex_enter(&dkp->dk_mutex); /* * The cmdk_part_info call at the end of cmdkattach may have * caused cmdk_reopen to do a TGDK_OPEN, make sure we close on * detach for case when cmdkopen/cmdkclose never occurs. */ if (dkp->dk_flag & CMDK_TGDK_OPEN) { dkp->dk_flag &= ~CMDK_TGDK_OPEN; (void) dadk_close(DKTP_DATA); } cmlb_detach(dkp->dk_cmlbhandle, 0); cmlb_free_handle(&dkp->dk_cmlbhandle); ddi_prop_remove_all(dip); cmdk_destroy_obj(dip, dkp); /* dadk/strategy linkage */ mutex_exit(&dkp->dk_mutex); mutex_destroy(&dkp->dk_mutex); rw_destroy(&dkp->dk_bbh_mutex); mutex_destroy(&dkp->dk_pm_mutex); cv_destroy(&dkp->dk_suspend_cv); ddi_soft_state_free(cmdk_state, instance); return (DDI_SUCCESS); } static int cmdkinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) { dev_t dev = (dev_t)arg; int instance; struct cmdk *dkp; #ifdef lint dip = dip; /* no one ever uses this */ #endif #ifdef CMDK_DEBUG if (cmdk_debug & DENT) PRF("cmdkinfo: call\n"); #endif instance = CMDKUNIT(dev); switch (infocmd) { case DDI_INFO_DEVT2DEVINFO: if (!(dkp = ddi_get_soft_state(cmdk_state, instance))) return (DDI_FAILURE); *result = (void *) dkp->dk_dip; break; case DDI_INFO_DEVT2INSTANCE: *result = (void *)(intptr_t)instance; break; default: return (DDI_FAILURE); } return (DDI_SUCCESS); } /* * Initialize the power management components */ static void cmdk_setup_pm(dev_info_t *dip, struct cmdk *dkp) { char *pm_comp[] = { "NAME=cmdk", "0=off", "1=on", NULL }; /* * Since the cmdk device does not the 'reg' property, * cpr will not call its DDI_SUSPEND/DDI_RESUME entries. * The following code is to tell cpr that this device * DOES need to be suspended and resumed. */ (void) ddi_prop_update_string(DDI_DEV_T_NONE, dip, "pm-hardware-state", "needs-suspend-resume"); if (ddi_prop_update_string_array(DDI_DEV_T_NONE, dip, "pm-components", pm_comp, 3) == DDI_PROP_SUCCESS) { if (pm_raise_power(dip, 0, CMDK_SPINDLE_ON) == DDI_SUCCESS) { mutex_enter(&dkp->dk_pm_mutex); dkp->dk_pm_level = CMDK_SPINDLE_ON; dkp->dk_pm_is_enabled = 1; mutex_exit(&dkp->dk_pm_mutex); } else { mutex_enter(&dkp->dk_pm_mutex); dkp->dk_pm_level = CMDK_SPINDLE_OFF; dkp->dk_pm_is_enabled = 0; mutex_exit(&dkp->dk_pm_mutex); } } else { mutex_enter(&dkp->dk_pm_mutex); dkp->dk_pm_level = CMDK_SPINDLE_UNINIT; dkp->dk_pm_is_enabled = 0; mutex_exit(&dkp->dk_pm_mutex); } } /* * suspend routine, it will be run when get the command * DDI_SUSPEND at detach(9E) from system power management */ static int cmdksuspend(dev_info_t *dip) { struct cmdk *dkp; int instance; clock_t count = 0; instance = ddi_get_instance(dip); if (!(dkp = ddi_get_soft_state(cmdk_state, instance))) return (DDI_FAILURE); mutex_enter(&dkp->dk_mutex); if (dkp->dk_flag & CMDK_SUSPEND) { mutex_exit(&dkp->dk_mutex); return (DDI_SUCCESS); } dkp->dk_flag |= CMDK_SUSPEND; /* need to wait a while */ while (dadk_getcmds(DKTP_DATA) != 0) { delay(drv_usectohz(1000000)); if (count > 60) { dkp->dk_flag &= ~CMDK_SUSPEND; cv_broadcast(&dkp->dk_suspend_cv); mutex_exit(&dkp->dk_mutex); return (DDI_FAILURE); } count++; } mutex_exit(&dkp->dk_mutex); return (DDI_SUCCESS); } /* * resume routine, it will be run when get the command * DDI_RESUME at attach(9E) from system power management */ static int cmdkresume(dev_info_t *dip) { struct cmdk *dkp; int instance; instance = ddi_get_instance(dip); if (!(dkp = ddi_get_soft_state(cmdk_state, instance))) return (DDI_FAILURE); mutex_enter(&dkp->dk_mutex); if (!(dkp->dk_flag & CMDK_SUSPEND)) { mutex_exit(&dkp->dk_mutex); return (DDI_FAILURE); } dkp->dk_pm_level = CMDK_SPINDLE_ON; dkp->dk_flag &= ~CMDK_SUSPEND; cv_broadcast(&dkp->dk_suspend_cv); mutex_exit(&dkp->dk_mutex); return (DDI_SUCCESS); } /* * power management entry point, it was used to * change power management component. * Actually, the real hard drive suspend/resume * was handled in ata, so this function is not * doing any real work other than verifying that * the disk is idle. */ static int cmdkpower(dev_info_t *dip, int component, int level) { struct cmdk *dkp; int instance; instance = ddi_get_instance(dip); if (!(dkp = ddi_get_soft_state(cmdk_state, instance)) || component != 0 || level > CMDK_SPINDLE_ON || level < CMDK_SPINDLE_OFF) { return (DDI_FAILURE); } mutex_enter(&dkp->dk_pm_mutex); if (dkp->dk_pm_is_enabled && dkp->dk_pm_level == level) { mutex_exit(&dkp->dk_pm_mutex); return (DDI_SUCCESS); } mutex_exit(&dkp->dk_pm_mutex); if ((level == CMDK_SPINDLE_OFF) && (dadk_getcmds(DKTP_DATA) != 0)) { return (DDI_FAILURE); } mutex_enter(&dkp->dk_pm_mutex); dkp->dk_pm_level = level; mutex_exit(&dkp->dk_pm_mutex); return (DDI_SUCCESS); } static int cmdk_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) { struct cmdk *dkp; #ifdef CMDK_DEBUG if (cmdk_debug & DENT) PRF("cmdk_prop_op: call\n"); #endif dkp = ddi_get_soft_state(cmdk_state, ddi_get_instance(dip)); if (dkp == NULL) return (ddi_prop_op(dev, dip, prop_op, mod_flags, name, valuep, lengthp)); return (cmlb_prop_op(dkp->dk_cmlbhandle, dev, dip, prop_op, mod_flags, name, valuep, lengthp, CMDKPART(dev), NULL)); } /* * dump routine */ static int cmdkdump(dev_t dev, caddr_t addr, daddr_t blkno, int nblk) { int instance; struct cmdk *dkp; diskaddr_t p_lblksrt; diskaddr_t p_lblkcnt; struct buf local; struct buf *bp; #ifdef CMDK_DEBUG if (cmdk_debug & DENT) PRF("cmdkdump: call\n"); #endif instance = CMDKUNIT(dev); if (!(dkp = ddi_get_soft_state(cmdk_state, instance)) || (blkno < 0)) return (ENXIO); if (cmlb_partinfo( dkp->dk_cmlbhandle, CMDKPART(dev), &p_lblkcnt, &p_lblksrt, NULL, NULL, 0)) { return (ENXIO); } if ((blkno+nblk) > p_lblkcnt) return (EINVAL); cmdk_indump = 1; /* Tell disk targets we are panic dumpping */ bp = &local; bzero(bp, sizeof (*bp)); bp->b_flags = B_BUSY; bp->b_un.b_addr = addr; bp->b_bcount = nblk << SCTRSHFT; SET_BP_SEC(bp, ((ulong_t)(p_lblksrt + blkno))); (void) dadk_dump(DKTP_DATA, bp); return (bp->b_error); } /* * Copy in the dadkio_rwcmd according to the user's data model. If needed, * convert it for our internal use. */ static int rwcmd_copyin(struct dadkio_rwcmd *rwcmdp, caddr_t inaddr, int flag) { switch (ddi_model_convert_from(flag)) { case DDI_MODEL_ILP32: { struct dadkio_rwcmd32 cmd32; if (ddi_copyin(inaddr, &cmd32, sizeof (struct dadkio_rwcmd32), flag)) { return (EFAULT); } rwcmdp->cmd = cmd32.cmd; rwcmdp->flags = cmd32.flags; rwcmdp->blkaddr = (daddr_t)cmd32.blkaddr; rwcmdp->buflen = cmd32.buflen; rwcmdp->bufaddr = (caddr_t)(intptr_t)cmd32.bufaddr; /* * Note: we do not convert the 'status' field, * as it should not contain valid data at this * point. */ bzero(&rwcmdp->status, sizeof (rwcmdp->status)); break; } case DDI_MODEL_NONE: { if (ddi_copyin(inaddr, rwcmdp, sizeof (struct dadkio_rwcmd), flag)) { return (EFAULT); } } } return (0); } /* * If necessary, convert the internal rwcmdp and status to the appropriate * data model and copy it out to the user. */ static int rwcmd_copyout(struct dadkio_rwcmd *rwcmdp, caddr_t outaddr, int flag) { switch (ddi_model_convert_from(flag)) { case DDI_MODEL_ILP32: { struct dadkio_rwcmd32 cmd32; cmd32.cmd = rwcmdp->cmd; cmd32.flags = rwcmdp->flags; cmd32.blkaddr = rwcmdp->blkaddr; cmd32.buflen = rwcmdp->buflen; ASSERT64(((uintptr_t)rwcmdp->bufaddr >> 32) == 0); cmd32.bufaddr = (caddr32_t)(uintptr_t)rwcmdp->bufaddr; cmd32.status.status = rwcmdp->status.status; cmd32.status.resid = rwcmdp->status.resid; cmd32.status.failed_blk_is_valid = rwcmdp->status.failed_blk_is_valid; cmd32.status.failed_blk = rwcmdp->status.failed_blk; cmd32.status.fru_code_is_valid = rwcmdp->status.fru_code_is_valid; cmd32.status.fru_code = rwcmdp->status.fru_code; bcopy(rwcmdp->status.add_error_info, cmd32.status.add_error_info, DADKIO_ERROR_INFO_LEN); if (ddi_copyout(&cmd32, outaddr, sizeof (struct dadkio_rwcmd32), flag)) return (EFAULT); break; } case DDI_MODEL_NONE: { if (ddi_copyout(rwcmdp, outaddr, sizeof (struct dadkio_rwcmd), flag)) return (EFAULT); } } return (0); } /* * ioctl routine */ static int cmdkioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *credp, int *rvalp) { int instance; struct scsi_device *devp; struct cmdk *dkp; char data[NBPSCTR]; instance = CMDKUNIT(dev); if (!(dkp = ddi_get_soft_state(cmdk_state, instance))) return (ENXIO); mutex_enter(&dkp->dk_mutex); while (dkp->dk_flag & CMDK_SUSPEND) { cv_wait(&dkp->dk_suspend_cv, &dkp->dk_mutex); } mutex_exit(&dkp->dk_mutex); bzero(data, sizeof (data)); switch (cmd) { case DKIOCGMEDIAINFO: { struct dk_minfo media_info; struct tgdk_geom phyg; /* dadk_getphygeom always returns success */ (void) dadk_getphygeom(DKTP_DATA, &phyg); media_info.dki_lbsize = phyg.g_secsiz; media_info.dki_capacity = phyg.g_cap; media_info.dki_media_type = DK_FIXED_DISK; if (ddi_copyout(&media_info, (void *)arg, sizeof (struct dk_minfo), flag)) { return (EFAULT); } else { return (0); } } case DKIOCINFO: { struct dk_cinfo *info = (struct dk_cinfo *)data; /* controller information */ info->dki_ctype = (DKTP_EXT->tg_ctype); info->dki_cnum = ddi_get_instance(ddi_get_parent(dkp->dk_dip)); (void) strcpy(info->dki_cname, ddi_get_name(ddi_get_parent(dkp->dk_dip))); /* Unit Information */ info->dki_unit = ddi_get_instance(dkp->dk_dip); devp = ddi_get_driver_private(dkp->dk_dip); info->dki_slave = (CMDEV_TARG(devp)<<3) | CMDEV_LUN(devp); (void) strcpy(info->dki_dname, ddi_driver_name(dkp->dk_dip)); info->dki_flags = DKI_FMTVOL; info->dki_partition = CMDKPART(dev); info->dki_maxtransfer = maxphys / DEV_BSIZE; info->dki_addr = 1; info->dki_space = 0; info->dki_prio = 0; info->dki_vec = 0; if (ddi_copyout(data, (void *)arg, sizeof (*info), flag)) return (EFAULT); else return (0); } case DKIOCSTATE: { int state; int rval; diskaddr_t p_lblksrt; diskaddr_t p_lblkcnt; if (ddi_copyin((void *)arg, &state, sizeof (int), flag)) return (EFAULT); /* dadk_check_media blocks until state changes */ if (rval = dadk_check_media(DKTP_DATA, &state)) return (rval); if (state == DKIO_INSERTED) { if (cmlb_validate(dkp->dk_cmlbhandle, 0, 0) != 0) return (ENXIO); if (cmlb_partinfo(dkp->dk_cmlbhandle, CMDKPART(dev), &p_lblkcnt, &p_lblksrt, NULL, NULL, 0)) return (ENXIO); if (p_lblkcnt <= 0) return (ENXIO); } if (ddi_copyout(&state, (caddr_t)arg, sizeof (int), flag)) return (EFAULT); return (0); } /* * is media removable? */ case DKIOCREMOVABLE: { int i; i = (DKTP_EXT->tg_rmb) ? 1 : 0; if (ddi_copyout(&i, (caddr_t)arg, sizeof (int), flag)) return (EFAULT); return (0); } case DKIOCADDBAD: /* * This is not an update mechanism to add bad blocks * to the bad block structures stored on disk. * * addbadsec(1M) will update the bad block data on disk * and use this ioctl to force the driver to re-initialize * the list of bad blocks in the driver. */ /* start BBH */ cmdk_bbh_reopen(dkp); return (0); case DKIOCG_PHYGEOM: case DKIOCG_VIRTGEOM: case DKIOCGGEOM: case DKIOCSGEOM: case DKIOCGAPART: case DKIOCSAPART: case DKIOCGVTOC: case DKIOCSVTOC: case DKIOCPARTINFO: case DKIOCGMBOOT: case DKIOCSMBOOT: case DKIOCGETEFI: case DKIOCSETEFI: case DKIOCPARTITION: { int rc; rc = cmlb_ioctl(dkp->dk_cmlbhandle, dev, cmd, arg, flag, credp, rvalp, 0); if (cmd == DKIOCSVTOC) cmdk_devid_setup(dkp); return (rc); } case DIOCTL_RWCMD: { struct dadkio_rwcmd *rwcmdp; int status; rwcmdp = kmem_alloc(sizeof (struct dadkio_rwcmd), KM_SLEEP); status = rwcmd_copyin(rwcmdp, (caddr_t)arg, flag); if (status == 0) { bzero(&(rwcmdp->status), sizeof (struct dadkio_status)); status = dadk_ioctl(DKTP_DATA, dev, cmd, (uintptr_t)rwcmdp, flag, credp, rvalp); } if (status == 0) status = rwcmd_copyout(rwcmdp, (caddr_t)arg, flag); kmem_free(rwcmdp, sizeof (struct dadkio_rwcmd)); return (status); } default: return (dadk_ioctl(DKTP_DATA, dev, cmd, arg, flag, credp, rvalp)); } } /*ARGSUSED1*/ static int cmdkclose(dev_t dev, int flag, int otyp, cred_t *credp) { int part; ulong_t partbit; int instance; struct cmdk *dkp; int lastclose = 1; int i; instance = CMDKUNIT(dev); if (!(dkp = ddi_get_soft_state(cmdk_state, instance)) || (otyp >= OTYPCNT)) return (ENXIO); mutex_enter(&dkp->dk_mutex); /* check if device has been opened */ ASSERT(cmdk_isopen(dkp, dev)); if (!(dkp->dk_flag & CMDK_OPEN)) { mutex_exit(&dkp->dk_mutex); return (ENXIO); } while (dkp->dk_flag & CMDK_SUSPEND) { cv_wait(&dkp->dk_suspend_cv, &dkp->dk_mutex); } part = CMDKPART(dev); partbit = 1 << part; /* account for close */ if (otyp == OTYP_LYR) { ASSERT(dkp->dk_open_lyr[part] > 0); if (dkp->dk_open_lyr[part]) dkp->dk_open_lyr[part]--; } else { ASSERT((dkp->dk_open_reg[otyp] & partbit) != 0); dkp->dk_open_reg[otyp] &= ~partbit; } dkp->dk_open_exl &= ~partbit; for (i = 0; i < CMDK_MAXPART; i++) if (dkp->dk_open_lyr[i] != 0) { lastclose = 0; break; } if (lastclose) for (i = 0; i < OTYPCNT; i++) if (dkp->dk_open_reg[i] != 0) { lastclose = 0; break; } mutex_exit(&dkp->dk_mutex); if (lastclose) cmlb_invalidate(dkp->dk_cmlbhandle, 0); return (DDI_SUCCESS); } /*ARGSUSED3*/ static int cmdkopen(dev_t *dev_p, int flag, int otyp, cred_t *credp) { dev_t dev = *dev_p; int part; ulong_t partbit; int instance; struct cmdk *dkp; diskaddr_t p_lblksrt; diskaddr_t p_lblkcnt; int i; int nodelay; instance = CMDKUNIT(dev); if (!(dkp = ddi_get_soft_state(cmdk_state, instance))) return (ENXIO); if (otyp >= OTYPCNT) return (EINVAL); mutex_enter(&dkp->dk_mutex); while (dkp->dk_flag & CMDK_SUSPEND) { cv_wait(&dkp->dk_suspend_cv, &dkp->dk_mutex); } mutex_exit(&dkp->dk_mutex); part = CMDKPART(dev); partbit = 1 << part; nodelay = (flag & (FNDELAY | FNONBLOCK)); mutex_enter(&dkp->dk_mutex); if (cmlb_validate(dkp->dk_cmlbhandle, 0, 0) != 0) { /* fail if not doing non block open */ if (!nodelay) { mutex_exit(&dkp->dk_mutex); return (ENXIO); } } else if (cmlb_partinfo(dkp->dk_cmlbhandle, part, &p_lblkcnt, &p_lblksrt, NULL, NULL, 0) == 0) { if (p_lblkcnt <= 0 && (!nodelay || otyp != OTYP_CHR)) { mutex_exit(&dkp->dk_mutex); return (ENXIO); } } else { /* fail if not doing non block open */ if (!nodelay) { mutex_exit(&dkp->dk_mutex); return (ENXIO); } } if ((DKTP_EXT->tg_rdonly) && (flag & FWRITE)) { mutex_exit(&dkp->dk_mutex); return (EROFS); } /* check for part already opend exclusively */ if (dkp->dk_open_exl & partbit) goto excl_open_fail; /* check if we can establish exclusive open */ if (flag & FEXCL) { if (dkp->dk_open_lyr[part]) goto excl_open_fail; for (i = 0; i < OTYPCNT; i++) { if (dkp->dk_open_reg[i] & partbit) goto excl_open_fail; } } /* open will succeed, account for open */ dkp->dk_flag |= CMDK_OPEN; if (otyp == OTYP_LYR) dkp->dk_open_lyr[part]++; else dkp->dk_open_reg[otyp] |= partbit; if (flag & FEXCL) dkp->dk_open_exl |= partbit; mutex_exit(&dkp->dk_mutex); return (DDI_SUCCESS); excl_open_fail: mutex_exit(&dkp->dk_mutex); return (EBUSY); } /* * read routine */ /*ARGSUSED2*/ static int cmdkread(dev_t dev, struct uio *uio, cred_t *credp) { return (cmdkrw(dev, uio, B_READ)); } /* * async read routine */ /*ARGSUSED2*/ static int cmdkaread(dev_t dev, struct aio_req *aio, cred_t *credp) { return (cmdkarw(dev, aio, B_READ)); } /* * write routine */ /*ARGSUSED2*/ static int cmdkwrite(dev_t dev, struct uio *uio, cred_t *credp) { return (cmdkrw(dev, uio, B_WRITE)); } /* * async write routine */ /*ARGSUSED2*/ static int cmdkawrite(dev_t dev, struct aio_req *aio, cred_t *credp) { return (cmdkarw(dev, aio, B_WRITE)); } static void cmdkmin(struct buf *bp) { if (bp->b_bcount > DK_MAXRECSIZE) bp->b_bcount = DK_MAXRECSIZE; } static int cmdkrw(dev_t dev, struct uio *uio, int flag) { int instance; struct cmdk *dkp; instance = CMDKUNIT(dev); if (!(dkp = ddi_get_soft_state(cmdk_state, instance))) return (ENXIO); mutex_enter(&dkp->dk_mutex); while (dkp->dk_flag & CMDK_SUSPEND) { cv_wait(&dkp->dk_suspend_cv, &dkp->dk_mutex); } mutex_exit(&dkp->dk_mutex); return (physio(cmdkstrategy, (struct buf *)0, dev, flag, cmdkmin, uio)); } static int cmdkarw(dev_t dev, struct aio_req *aio, int flag) { int instance; struct cmdk *dkp; instance = CMDKUNIT(dev); if (!(dkp = ddi_get_soft_state(cmdk_state, instance))) return (ENXIO); mutex_enter(&dkp->dk_mutex); while (dkp->dk_flag & CMDK_SUSPEND) { cv_wait(&dkp->dk_suspend_cv, &dkp->dk_mutex); } mutex_exit(&dkp->dk_mutex); return (aphysio(cmdkstrategy, anocancel, dev, flag, cmdkmin, aio)); } /* * strategy routine */ static int cmdkstrategy(struct buf *bp) { int instance; struct cmdk *dkp; long d_cnt; diskaddr_t p_lblksrt; diskaddr_t p_lblkcnt; instance = CMDKUNIT(bp->b_edev); if (cmdk_indump || !(dkp = ddi_get_soft_state(cmdk_state, instance)) || (dkblock(bp) < 0)) { bp->b_resid = bp->b_bcount; SETBPERR(bp, ENXIO); biodone(bp); return (0); } mutex_enter(&dkp->dk_mutex); ASSERT(cmdk_isopen(dkp, bp->b_edev)); while (dkp->dk_flag & CMDK_SUSPEND) { cv_wait(&dkp->dk_suspend_cv, &dkp->dk_mutex); } mutex_exit(&dkp->dk_mutex); bp->b_flags &= ~(B_DONE|B_ERROR); bp->b_resid = 0; bp->av_back = NULL; /* * only re-read the vtoc if necessary (force == FALSE) */ if (cmlb_partinfo(dkp->dk_cmlbhandle, CMDKPART(bp->b_edev), &p_lblkcnt, &p_lblksrt, NULL, NULL, 0)) { SETBPERR(bp, ENXIO); } if ((bp->b_bcount & (NBPSCTR-1)) || (dkblock(bp) > p_lblkcnt)) SETBPERR(bp, ENXIO); if ((bp->b_flags & B_ERROR) || (dkblock(bp) == p_lblkcnt)) { bp->b_resid = bp->b_bcount; biodone(bp); return (0); } d_cnt = bp->b_bcount >> SCTRSHFT; if ((dkblock(bp) + d_cnt) > p_lblkcnt) { bp->b_resid = ((dkblock(bp) + d_cnt) - p_lblkcnt) << SCTRSHFT; bp->b_bcount -= bp->b_resid; } SET_BP_SEC(bp, ((ulong_t)(p_lblksrt + dkblock(bp)))); if (dadk_strategy(DKTP_DATA, bp) != DDI_SUCCESS) { bp->b_resid += bp->b_bcount; biodone(bp); } return (0); } static int cmdk_create_obj(dev_info_t *dip, struct cmdk *dkp) { struct scsi_device *devp; opaque_t queobjp = NULL; opaque_t flcobjp = NULL; char que_keyvalp[64]; int que_keylen; char flc_keyvalp[64]; int flc_keylen; ASSERT(mutex_owned(&dkp->dk_mutex)); /* Create linkage to queueing routines based on property */ que_keylen = sizeof (que_keyvalp); if (ddi_prop_op(DDI_DEV_T_NONE, dip, PROP_LEN_AND_VAL_BUF, DDI_PROP_CANSLEEP, "queue", que_keyvalp, &que_keylen) != DDI_PROP_SUCCESS) { cmn_err(CE_WARN, "cmdk_create_obj: queue property undefined"); return (DDI_FAILURE); } que_keyvalp[que_keylen] = (char)0; if (strcmp(que_keyvalp, "qfifo") == 0) { queobjp = (opaque_t)qfifo_create(); } else if (strcmp(que_keyvalp, "qsort") == 0) { queobjp = (opaque_t)qsort_create(); } else { return (DDI_FAILURE); } /* Create linkage to dequeueing routines based on property */ flc_keylen = sizeof (flc_keyvalp); if (ddi_prop_op(DDI_DEV_T_NONE, dip, PROP_LEN_AND_VAL_BUF, DDI_PROP_CANSLEEP, "flow_control", flc_keyvalp, &flc_keylen) != DDI_PROP_SUCCESS) { cmn_err(CE_WARN, "cmdk_create_obj: flow-control property undefined"); return (DDI_FAILURE); } flc_keyvalp[flc_keylen] = (char)0; if (strcmp(flc_keyvalp, "dsngl") == 0) { flcobjp = (opaque_t)dsngl_create(); } else if (strcmp(flc_keyvalp, "dmult") == 0) { flcobjp = (opaque_t)dmult_create(); } else { return (DDI_FAILURE); } /* populate bbh_obj object stored in dkp */ dkp->dk_bbh_obj.bbh_data = dkp; dkp->dk_bbh_obj.bbh_ops = &cmdk_bbh_ops; /* create linkage to dadk */ dkp->dk_tgobjp = (opaque_t)dadk_create(); devp = ddi_get_driver_private(dip); (void) dadk_init(DKTP_DATA, devp, flcobjp, queobjp, &dkp->dk_bbh_obj, NULL); return (DDI_SUCCESS); } static void cmdk_destroy_obj(dev_info_t *dip, struct cmdk *dkp) { char que_keyvalp[64]; int que_keylen; char flc_keyvalp[64]; int flc_keylen; ASSERT(mutex_owned(&dkp->dk_mutex)); (void) dadk_free((dkp->dk_tgobjp)); dkp->dk_tgobjp = NULL; que_keylen = sizeof (que_keyvalp); if (ddi_prop_op(DDI_DEV_T_NONE, dip, PROP_LEN_AND_VAL_BUF, DDI_PROP_CANSLEEP, "queue", que_keyvalp, &que_keylen) != DDI_PROP_SUCCESS) { cmn_err(CE_WARN, "cmdk_destroy_obj: queue property undefined"); return; } que_keyvalp[que_keylen] = (char)0; flc_keylen = sizeof (flc_keyvalp); if (ddi_prop_op(DDI_DEV_T_NONE, dip, PROP_LEN_AND_VAL_BUF, DDI_PROP_CANSLEEP, "flow_control", flc_keyvalp, &flc_keylen) != DDI_PROP_SUCCESS) { cmn_err(CE_WARN, "cmdk_destroy_obj: flow-control property undefined"); return; } flc_keyvalp[flc_keylen] = (char)0; } /*ARGSUSED5*/ static int cmdk_lb_rdwr(dev_info_t *dip, uchar_t cmd, void *bufaddr, diskaddr_t start, size_t count, void *tg_cookie) { struct cmdk *dkp; opaque_t handle; int rc = 0; char *bufa; dkp = ddi_get_soft_state(cmdk_state, ddi_get_instance(dip)); if (dkp == NULL) return (ENXIO); if (cmd != TG_READ && cmd != TG_WRITE) return (EINVAL); /* count must be multiple of 512 */ count = (count + NBPSCTR - 1) & -NBPSCTR; handle = dadk_iob_alloc(DKTP_DATA, start, count, KM_SLEEP); if (!handle) return (ENOMEM); if (cmd == TG_READ) { bufa = dadk_iob_xfer(DKTP_DATA, handle, B_READ); if (!bufa) rc = EIO; else bcopy(bufa, bufaddr, count); } else { bufa = dadk_iob_htoc(DKTP_DATA, handle); bcopy(bufaddr, bufa, count); bufa = dadk_iob_xfer(DKTP_DATA, handle, B_WRITE); if (!bufa) rc = EIO; } (void) dadk_iob_free(DKTP_DATA, handle); return (rc); } /*ARGSUSED3*/ static int cmdk_lb_getinfo(dev_info_t *dip, int cmd, void *arg, void *tg_cookie) { struct cmdk *dkp; struct tgdk_geom phyg; dkp = ddi_get_soft_state(cmdk_state, ddi_get_instance(dip)); if (dkp == NULL) return (ENXIO); switch (cmd) { case TG_GETPHYGEOM: { cmlb_geom_t *phygeomp = (cmlb_geom_t *)arg; /* dadk_getphygeom always returns success */ (void) dadk_getphygeom(DKTP_DATA, &phyg); phygeomp->g_capacity = phyg.g_cap; phygeomp->g_nsect = phyg.g_sec; phygeomp->g_nhead = phyg.g_head; phygeomp->g_acyl = phyg.g_acyl; phygeomp->g_ncyl = phyg.g_cyl; phygeomp->g_secsize = phyg.g_secsiz; phygeomp->g_intrlv = 1; phygeomp->g_rpm = 3600; return (0); } case TG_GETVIRTGEOM: { cmlb_geom_t *virtgeomp = (cmlb_geom_t *)arg; diskaddr_t capacity; (void) dadk_getgeom(DKTP_DATA, &phyg); capacity = phyg.g_cap; /* * If the controller returned us something that doesn't * really fit into an Int 13/function 8 geometry * result, just fail the ioctl. See PSARC 1998/313. */ if (capacity < 0 || capacity >= 63 * 254 * 1024) return (EINVAL); virtgeomp->g_capacity = capacity; virtgeomp->g_nsect = 63; virtgeomp->g_nhead = 254; virtgeomp->g_ncyl = capacity / (63 * 254); virtgeomp->g_acyl = 0; virtgeomp->g_secsize = 512; virtgeomp->g_intrlv = 1; virtgeomp->g_rpm = 3600; return (0); } case TG_GETCAPACITY: case TG_GETBLOCKSIZE: { /* dadk_getphygeom always returns success */ (void) dadk_getphygeom(DKTP_DATA, &phyg); if (cmd == TG_GETCAPACITY) *(diskaddr_t *)arg = phyg.g_cap; else *(uint32_t *)arg = (uint32_t)phyg.g_secsiz; return (0); } case TG_GETATTR: { tg_attribute_t *tgattribute = (tg_attribute_t *)arg; if ((DKTP_EXT->tg_rdonly)) tgattribute->media_is_writable = FALSE; else tgattribute->media_is_writable = TRUE; return (0); } default: return (ENOTTY); } } /* * Create and register the devid. * There are 4 different ways we can get a device id: * 1. Already have one - nothing to do * 2. Build one from the drive's model and serial numbers * 3. Read one from the disk (first sector of last track) * 4. Fabricate one and write it on the disk. * If any of these succeeds, register the deviceid */ static void cmdk_devid_setup(struct cmdk *dkp) { int rc; /* Try options until one succeeds, or all have failed */ /* 1. All done if already registered */ if (dkp->dk_devid != NULL) return; /* 2. Build a devid from the model and serial number */ rc = cmdk_devid_modser(dkp); if (rc != DDI_SUCCESS) { /* 3. Read devid from the disk, if present */ rc = cmdk_devid_read(dkp); /* 4. otherwise make one up and write it on the disk */ if (rc != DDI_SUCCESS) rc = cmdk_devid_fabricate(dkp); } /* If we managed to get a devid any of the above ways, register it */ if (rc == DDI_SUCCESS) (void) ddi_devid_register(dkp->dk_dip, dkp->dk_devid); } /* * Build a devid from the model and serial number * Return DDI_SUCCESS or DDI_FAILURE. */ static int cmdk_devid_modser(struct cmdk *dkp) { int rc = DDI_FAILURE; char *hwid; int modlen; int serlen; /* * device ID is a concatenation of model number, '=', serial number. */ hwid = kmem_alloc(CMDK_HWIDLEN, KM_SLEEP); modlen = cmdk_get_modser(dkp, DIOCTL_GETMODEL, hwid, CMDK_HWIDLEN); if (modlen == 0) { rc = DDI_FAILURE; goto err; } hwid[modlen++] = '='; serlen = cmdk_get_modser(dkp, DIOCTL_GETSERIAL, hwid + modlen, CMDK_HWIDLEN - modlen); if (serlen == 0) { rc = DDI_FAILURE; goto err; } hwid[modlen + serlen] = 0; /* Initialize the device ID, trailing NULL not included */ rc = ddi_devid_init(dkp->dk_dip, DEVID_ATA_SERIAL, modlen + serlen, hwid, (ddi_devid_t *)&dkp->dk_devid); if (rc != DDI_SUCCESS) { rc = DDI_FAILURE; goto err; } rc = DDI_SUCCESS; err: kmem_free(hwid, CMDK_HWIDLEN); return (rc); } static int cmdk_get_modser(struct cmdk *dkp, int ioccmd, char *buf, int len) { dadk_ioc_string_t strarg; int rval; char *s; char ch; boolean_t ret; int i; int tb; strarg.is_buf = buf; strarg.is_size = len; if (dadk_ioctl(DKTP_DATA, dkp->dk_dev, ioccmd, (uintptr_t)&strarg, FNATIVE | FKIOCTL, NULL, &rval) != 0) return (0); /* * valid model/serial string must contain a non-zero non-space * trim trailing spaces/NULL */ ret = B_FALSE; s = buf; for (i = 0; i < strarg.is_size; i++) { ch = *s++; if (ch != ' ' && ch != '\0') tb = i + 1; if (ch != ' ' && ch != '\0' && ch != '0') ret = B_TRUE; } if (ret == B_FALSE) return (0); return (tb); } /* * Read a devid from on the first block of the last track of * the last cylinder. Make sure what we read is a valid devid. * Return DDI_SUCCESS or DDI_FAILURE. */ static int cmdk_devid_read(struct cmdk *dkp) { diskaddr_t blk; struct dk_devid *dkdevidp; uint_t *ip; int chksum; int i, sz; tgdk_iob_handle handle; int rc = DDI_FAILURE; if (cmlb_get_devid_block(dkp->dk_cmlbhandle, &blk, 0)) goto err; /* read the devid */ handle = dadk_iob_alloc(DKTP_DATA, blk, NBPSCTR, KM_SLEEP); if (handle == NULL) goto err; dkdevidp = (struct dk_devid *)dadk_iob_xfer(DKTP_DATA, handle, B_READ); if (dkdevidp == NULL) goto err; /* Validate the revision */ if ((dkdevidp->dkd_rev_hi != DK_DEVID_REV_MSB) || (dkdevidp->dkd_rev_lo != DK_DEVID_REV_LSB)) goto err; /* Calculate the checksum */ chksum = 0; ip = (uint_t *)dkdevidp; for (i = 0; i < ((NBPSCTR - sizeof (int))/sizeof (int)); i++) chksum ^= ip[i]; if (DKD_GETCHKSUM(dkdevidp) != chksum) goto err; /* Validate the device id */ if (ddi_devid_valid((ddi_devid_t)dkdevidp->dkd_devid) != DDI_SUCCESS) goto err; /* keep a copy of the device id */ sz = ddi_devid_sizeof((ddi_devid_t)dkdevidp->dkd_devid); dkp->dk_devid = kmem_alloc(sz, KM_SLEEP); bcopy(dkdevidp->dkd_devid, dkp->dk_devid, sz); rc = DDI_SUCCESS; err: if (handle != NULL) (void) dadk_iob_free(DKTP_DATA, handle); return (rc); } /* * Create a devid and write it on the first block of the last track of * the last cylinder. * Return DDI_SUCCESS or DDI_FAILURE. */ static int cmdk_devid_fabricate(struct cmdk *dkp) { ddi_devid_t devid = NULL; /* devid made by ddi_devid_init */ struct dk_devid *dkdevidp; /* devid struct stored on disk */ diskaddr_t blk; tgdk_iob_handle handle = NULL; uint_t *ip, chksum; int i; int rc; rc = ddi_devid_init(dkp->dk_dip, DEVID_FAB, 0, NULL, &devid); if (rc != DDI_SUCCESS) goto err; if (cmlb_get_devid_block(dkp->dk_cmlbhandle, &blk, 0)) { /* no device id block address */ return (DDI_FAILURE); } handle = dadk_iob_alloc(DKTP_DATA, blk, NBPSCTR, KM_SLEEP); if (!handle) goto err; /* Locate the buffer */ dkdevidp = (struct dk_devid *)dadk_iob_htoc(DKTP_DATA, handle); /* Fill in the revision */ bzero(dkdevidp, NBPSCTR); dkdevidp->dkd_rev_hi = DK_DEVID_REV_MSB; dkdevidp->dkd_rev_lo = DK_DEVID_REV_LSB; /* Copy in the device id */ i = ddi_devid_sizeof(devid); if (i > DK_DEVID_SIZE) goto err; bcopy(devid, dkdevidp->dkd_devid, i); /* Calculate the chksum */ chksum = 0; ip = (uint_t *)dkdevidp; for (i = 0; i < ((NBPSCTR - sizeof (int))/sizeof (int)); i++) chksum ^= ip[i]; /* Fill in the checksum */ DKD_FORMCHKSUM(chksum, dkdevidp); /* write the devid */ (void) dadk_iob_xfer(DKTP_DATA, handle, B_WRITE); dkp->dk_devid = devid; rc = DDI_SUCCESS; err: if (handle != NULL) (void) dadk_iob_free(DKTP_DATA, handle); if (rc != DDI_SUCCESS && devid != NULL) ddi_devid_free(devid); return (rc); } static void cmdk_bbh_free_alts(struct cmdk *dkp) { if (dkp->dk_alts_hdl) { (void) dadk_iob_free(DKTP_DATA, dkp->dk_alts_hdl); kmem_free(dkp->dk_slc_cnt, NDKMAP * (sizeof (uint32_t) + sizeof (struct alts_ent *))); dkp->dk_alts_hdl = NULL; } } static void cmdk_bbh_reopen(struct cmdk *dkp) { tgdk_iob_handle handle = NULL; diskaddr_t slcb, slcn, slce; struct alts_parttbl *ap; struct alts_ent *enttblp; uint32_t altused; uint32_t altbase; uint32_t altlast; int alts; uint16_t vtoctag; int i, j; /* find slice with V_ALTSCTR tag */ for (alts = 0; alts < NDKMAP; alts++) { if (cmlb_partinfo( dkp->dk_cmlbhandle, alts, &slcn, &slcb, NULL, &vtoctag, 0)) { goto empty; /* no partition table exists */ } if (vtoctag == V_ALTSCTR && slcn > 1) break; } if (alts >= NDKMAP) { goto empty; /* no V_ALTSCTR slice defined */ } /* read in ALTS label block */ handle = dadk_iob_alloc(DKTP_DATA, slcb, NBPSCTR, KM_SLEEP); if (!handle) { goto empty; } ap = (struct alts_parttbl *)dadk_iob_xfer(DKTP_DATA, handle, B_READ); if (!ap || (ap->alts_sanity != ALTS_SANITY)) { goto empty; } altused = ap->alts_ent_used; /* number of BB entries */ altbase = ap->alts_ent_base; /* blk offset from begin slice */ altlast = ap->alts_ent_end; /* blk offset to last block */ /* ((altused * sizeof (struct alts_ent) + NBPSCTR - 1) & ~NBPSCTR) */ if (altused == 0 || altbase < 1 || altbase > altlast || altlast >= slcn) { goto empty; } (void) dadk_iob_free(DKTP_DATA, handle); /* read in ALTS remapping table */ handle = dadk_iob_alloc(DKTP_DATA, slcb + altbase, (altlast - altbase + 1) << SCTRSHFT, KM_SLEEP); if (!handle) { goto empty; } enttblp = (struct alts_ent *)dadk_iob_xfer(DKTP_DATA, handle, B_READ); if (!enttblp) { goto empty; } rw_enter(&dkp->dk_bbh_mutex, RW_WRITER); /* allocate space for dk_slc_cnt and dk_slc_ent tables */ if (dkp->dk_slc_cnt == NULL) { dkp->dk_slc_cnt = kmem_alloc(NDKMAP * (sizeof (long) + sizeof (struct alts_ent *)), KM_SLEEP); } dkp->dk_slc_ent = (struct alts_ent **)(dkp->dk_slc_cnt + NDKMAP); /* free previous BB table (if any) */ if (dkp->dk_alts_hdl) { (void) dadk_iob_free(DKTP_DATA, dkp->dk_alts_hdl); dkp->dk_alts_hdl = NULL; dkp->dk_altused = 0; } /* save linkage to new BB table */ dkp->dk_alts_hdl = handle; dkp->dk_altused = altused; /* * build indexes to BB table by slice * effectively we have * struct alts_ent *enttblp[altused]; * * uint32_t dk_slc_cnt[NDKMAP]; * struct alts_ent *dk_slc_ent[NDKMAP]; */ for (i = 0; i < NDKMAP; i++) { if (cmlb_partinfo( dkp->dk_cmlbhandle, i, &slcn, &slcb, NULL, NULL, 0)) { goto empty1; } dkp->dk_slc_cnt[i] = 0; if (slcn == 0) continue; /* slice is not allocated */ /* last block in slice */ slce = slcb + slcn - 1; /* find first remap entry in after beginnning of slice */ for (j = 0; j < altused; j++) { if (enttblp[j].bad_start + enttblp[j].bad_end >= slcb) break; } dkp->dk_slc_ent[i] = enttblp + j; /* count remap entrys until end of slice */ for (; j < altused && enttblp[j].bad_start <= slce; j++) { dkp->dk_slc_cnt[i] += 1; } } rw_exit(&dkp->dk_bbh_mutex); return; empty: rw_enter(&dkp->dk_bbh_mutex, RW_WRITER); empty1: if (handle && handle != dkp->dk_alts_hdl) (void) dadk_iob_free(DKTP_DATA, handle); if (dkp->dk_alts_hdl) { (void) dadk_iob_free(DKTP_DATA, dkp->dk_alts_hdl); dkp->dk_alts_hdl = NULL; } rw_exit(&dkp->dk_bbh_mutex); } /*ARGSUSED*/ static bbh_cookie_t cmdk_bbh_htoc(opaque_t bbh_data, opaque_t handle) { struct bbh_handle *hp; bbh_cookie_t ckp; hp = (struct bbh_handle *)handle; ckp = hp->h_cktab + hp->h_idx; hp->h_idx++; return (ckp); } /*ARGSUSED*/ static void cmdk_bbh_freehandle(opaque_t bbh_data, opaque_t handle) { struct bbh_handle *hp; hp = (struct bbh_handle *)handle; kmem_free(handle, (sizeof (struct bbh_handle) + (hp->h_totck * (sizeof (struct bbh_cookie))))); } /* * cmdk_bbh_gethandle remaps the bad sectors to alternates. * There are 7 different cases when the comparison is made * between the bad sector cluster and the disk section. * * bad sector cluster gggggggggggbbbbbbbggggggggggg * case 1: ddddd * case 2: -d----- * case 3: ddddd * case 4: dddddddddddd * case 5: ddddddd----- * case 6: ---ddddddd * case 7: ddddddd * * where: g = good sector, b = bad sector * d = sector in disk section * - = disk section may be extended to cover those disk area */ static opaque_t cmdk_bbh_gethandle(opaque_t bbh_data, struct buf *bp) { struct cmdk *dkp = (struct cmdk *)bbh_data; struct bbh_handle *hp; struct bbh_cookie *ckp; struct alts_ent *altp; uint32_t alts_used; uint32_t part = CMDKPART(bp->b_edev); daddr32_t lastsec; long d_count; int i; int idx; int cnt; if (part >= V_NUMPAR) return (NULL); /* * This if statement is atomic and it will succeed * if there are no bad blocks (almost always) * * so this if is performed outside of the rw_enter for speed * and then repeated inside the rw_enter for safety */ if (!dkp->dk_alts_hdl) { return (NULL); } rw_enter(&dkp->dk_bbh_mutex, RW_READER); if (dkp->dk_alts_hdl == NULL) { rw_exit(&dkp->dk_bbh_mutex); return (NULL); } alts_used = dkp->dk_slc_cnt[part]; if (alts_used == 0) { rw_exit(&dkp->dk_bbh_mutex); return (NULL); } altp = dkp->dk_slc_ent[part]; /* * binary search for the largest bad sector index in the alternate * entry table which overlaps or larger than the starting d_sec */ i = cmdk_bbh_bsearch(altp, alts_used, GET_BP_SEC(bp)); /* if starting sector is > the largest bad sector, return */ if (i == -1) { rw_exit(&dkp->dk_bbh_mutex); return (NULL); } /* i is the starting index. Set altp to the starting entry addr */ altp += i; d_count = bp->b_bcount >> SCTRSHFT; lastsec = GET_BP_SEC(bp) + d_count - 1; /* calculate the number of bad sectors */ for (idx = i, cnt = 0; idx < alts_used; idx++, altp++, cnt++) { if (lastsec < altp->bad_start) break; } if (!cnt) { rw_exit(&dkp->dk_bbh_mutex); return (NULL); } /* calculate the maximum number of reserved cookies */ cnt <<= 1; cnt++; /* allocate the handle */ hp = (struct bbh_handle *)kmem_zalloc((sizeof (*hp) + (cnt * sizeof (*ckp))), KM_SLEEP); hp->h_idx = 0; hp->h_totck = cnt; ckp = hp->h_cktab = (struct bbh_cookie *)(hp + 1); ckp[0].ck_sector = GET_BP_SEC(bp); ckp[0].ck_seclen = d_count; altp = dkp->dk_slc_ent[part]; altp += i; for (idx = 0; i < alts_used; i++, altp++) { /* CASE 1: */ if (lastsec < altp->bad_start) break; /* CASE 3: */ if (ckp[idx].ck_sector > altp->bad_end) continue; /* CASE 2 and 7: */ if ((ckp[idx].ck_sector >= altp->bad_start) && (lastsec <= altp->bad_end)) { ckp[idx].ck_sector = altp->good_start + ckp[idx].ck_sector - altp->bad_start; break; } /* at least one bad sector in our section. break it. */ /* CASE 5: */ if ((lastsec >= altp->bad_start) && (lastsec <= altp->bad_end)) { ckp[idx+1].ck_seclen = lastsec - altp->bad_start + 1; ckp[idx].ck_seclen -= ckp[idx+1].ck_seclen; ckp[idx+1].ck_sector = altp->good_start; break; } /* CASE 6: */ if ((ckp[idx].ck_sector <= altp->bad_end) && (ckp[idx].ck_sector >= altp->bad_start)) { ckp[idx+1].ck_seclen = ckp[idx].ck_seclen; ckp[idx].ck_seclen = altp->bad_end - ckp[idx].ck_sector + 1; ckp[idx+1].ck_seclen -= ckp[idx].ck_seclen; ckp[idx].ck_sector = altp->good_start + ckp[idx].ck_sector - altp->bad_start; idx++; ckp[idx].ck_sector = altp->bad_end + 1; continue; /* check rest of section */ } /* CASE 4: */ ckp[idx].ck_seclen = altp->bad_start - ckp[idx].ck_sector; ckp[idx+1].ck_sector = altp->good_start; ckp[idx+1].ck_seclen = altp->bad_end - altp->bad_start + 1; idx += 2; ckp[idx].ck_sector = altp->bad_end + 1; ckp[idx].ck_seclen = lastsec - altp->bad_end; } rw_exit(&dkp->dk_bbh_mutex); return ((opaque_t)hp); } static int cmdk_bbh_bsearch(struct alts_ent *buf, int cnt, daddr32_t key) { int i; int ind; int interval; int mystatus = -1; if (!cnt) return (mystatus); ind = 1; /* compiler complains about possible uninitialized var */ for (i = 1; i <= cnt; i <<= 1) ind = i; for (interval = ind; interval; ) { if ((key >= buf[ind-1].bad_start) && (key <= buf[ind-1].bad_end)) { return (ind-1); } else { interval >>= 1; if (key < buf[ind-1].bad_start) { /* record the largest bad sector index */ mystatus = ind-1; if (!interval) break; ind = ind - interval; } else { /* * if key is larger than the last element * then break */ if ((ind == cnt) || !interval) break; if ((ind+interval) <= cnt) ind += interval; } } } return (mystatus); }