b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * CDDL HEADER START
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * The contents of this file are subject to the terms of the
193974072f41a843678abf5f61979c748687e66bSherry Moore * Common Development and Distribution License (the "License").
193974072f41a843678abf5f61979c748687e66bSherry Moore * You may not use this file except in compliance with the License.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * See the License for the specific language governing permissions
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * and limitations under the License.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * When distributing Covered Code, include this CDDL HEADER in each
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * If applicable, add the following below this CDDL HEADER, with the
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * fields enclosed by brackets "[]" replaced with your own identifying
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * information: Portions Copyright [yyyy] [name of copyright owner]
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * CDDL HEADER END
9c57abc8d70cb139020be846baec0a9c4d9a73cdsrivijitha dugganapalli * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Use is subject to license terms.
89b43686db1fe9681d80a7cf5662730cb9378caeBayard Bell * Copyright (c) 2011 Bayard G. Bell. All rights reserved.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * SCSA HBA nexus driver that emulates an HBA connected to SCSI target
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * devices (large disks).
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * cb_ops function prototypes
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_ioctl(dev_t, int cmd, intptr_t arg, int mode,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * dev_ops functions prototypes
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_info(dev_info_t *dip, ddi_info_cmd_t infocmd,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_attach(dev_info_t *dip, ddi_attach_cmd_t cmd);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_detach(dev_info_t *dip, ddi_detach_cmd_t cmd);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function prototypes
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * SCSA functions exported by means of the transport table
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_tran_tgt_init(dev_info_t *hba_dip, dev_info_t *tgt_dip,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_scsi_start(struct scsi_address *ap, struct scsi_pkt *pkt);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void emul64_pkt_comp(void *);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_scsi_abort(struct scsi_address *ap, struct scsi_pkt *pkt);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_scsi_reset(struct scsi_address *ap, int level);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_scsi_getcap(struct scsi_address *ap, char *cap, int whom);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_scsi_setcap(struct scsi_address *ap, char *cap, int value,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic struct scsi_pkt *emul64_scsi_init_pkt(struct scsi_address *ap,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth struct scsi_pkt *pkt, struct buf *bp, int cmdlen, int statuslen,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void emul64_scsi_destroy_pkt(struct scsi_address *ap,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void emul64_scsi_dmafree(struct scsi_address *ap, struct scsi_pkt *pkt);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void emul64_scsi_sync_pkt(struct scsi_address *ap, struct scsi_pkt *pkt);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int emul64_scsi_reset_notify(struct scsi_address *ap, int flag,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * internal functions
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void emul64_i_log(struct emul64 *emul64, int level, char *fmt, ...);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic emul64_nowrite_t *emul64_nowrite_alloc(emul64_range_t *);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic emul64_nowrite_t *emul64_find_nowrite(emul64_tgt_t *,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthextern emul64_tgt_t *find_tgt(struct emul64 *, ushort_t, ushort_t);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void emul64_debug_dump_cdb(struct scsi_address *ap,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic int ddi_in_panic(void);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Tunables:
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * emul64_max_task
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * The taskq facility is used to queue up SCSI start requests on a per
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * controller basis. If the maximum number of queued tasks is hit,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * taskq_ent_alloc() delays for a second, which adversely impacts our
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * performance. This value establishes the maximum number of task
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * queue entries when taskq_create is called.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * emul64_task_nthreads
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Specifies the number of threads that should be used to process a
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * controller's task queue. Our init function sets this to the number
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * of CPUs on the system, but this can be overridden in emul64.conf.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Local static data
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Character/block operations.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * autoconfiguration routines.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth 0, /* refcnt */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth ret = ddi_soft_state_init(&emul64_state, sizeof (struct emul64),
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* Set the number of task threads to the number of CPUs */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (ret != 0) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Given the device number return the devinfo pointer
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * from the scsi_device structure.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/*ARGSUSED*/
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_info(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth switch (cmd) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Attach an instance of an emul64 host adapter. Allocate data structures,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * initialize the emul64 and we're on the air.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/*ARGSUSED*/
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth switch (cmd) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Allocate emul64 data structure.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (ddi_soft_state_zalloc(emul64_state, instance) != DDI_SUCCESS) {
193974072f41a843678abf5f61979c748687e66bSherry Moore "emul64%d: Failed to alloc soft state",
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth emul64 = (struct emul64 *)ddi_get_soft_state(emul64_state, instance);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Allocate a transport structure
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth cmn_err(CE_WARN, "emul64: scsi_hba_tran_alloc failed\n");
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Attach this instance of the hba
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Look up the scsi-options property
193974072f41a843678abf5f61979c748687e66bSherry Moore ddi_prop_get_int(DDI_DEV_T_ANY, dip, 0, "scsi-options",
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth EMUL64_DEBUG(emul64, SCSI_DEBUG, "emul64 scsi-options=%x",
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* mutexes to protect the emul64 request and response queue */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth mutex_init(EMUL64_REQ_MUTEX(emul64), NULL, MUTEX_DRIVER,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth mutex_init(EMUL64_RESP_MUTEX(emul64), NULL, MUTEX_DRIVER,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Initialize the default Target Capabilities and Sync Rates
193974072f41a843678abf5f61979c748687e66bSherry Moore emul64_task_nthreads, MINCLSYSPRI, 1, emul64_max_task, 0);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth emul64_i_log(NULL, CE_WARN, "emul64%d: Unable to attach", instance);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/*ARGSUSED*/
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* get transport structure pointer from the dip */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (!(tran = (scsi_hba_tran_t *)ddi_get_driver_private(dip))) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* get soft state from transport structure */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth EMUL64_DEBUG(emul64, SCSI_DEBUG, "emul64_detach: cmd = %d", cmd);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth switch (cmd) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth EMUL64_DEBUG(emul64, SCSI_DEBUG, "emul64_detach: done");
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function name : emul64_tran_tgt_init
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Return Values : DDI_SUCCESS if target supported, DDI_FAILURE otherwise
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/*ARGSUSED*/
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_tran_tgt_init(dev_info_t *hba_dip, dev_info_t *tgt_dip,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * We get called for each target driver.conf node, multiple
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * nodes may map to the same tgt,lun (sd.conf, st.conf, etc).
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Check to see if transport to tgt,lun already established.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth tgt = find_tgt(emul64, sd->sd_address.a_target, sd->sd_address.a_lun);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* see if we have driver.conf specified device for this target,lun */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth (void) snprintf(prop_name, sizeof (prop_name), "targ_%d_%d",
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (ddi_prop_lookup_string_array(DDI_DEV_T_ANY, hba_dip,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* pick geometry name and vidpid string from string array */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* lookup geometry property integer array */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, hba_dip, DDI_PROP_DONTPASS,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* allocate and initialize tgt structure for tgt,lun */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth rw_init(&tgt->emul64_tgt_nw_lock, NULL, RW_DRIVER, NULL);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth mutex_init(&tgt->emul64_tgt_blk_lock, NULL, MUTEX_DRIVER, NULL);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* create avl for data block storage */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth avl_create(&tgt->emul64_tgt_data, emul64_bsd_blkcompare,
193974072f41a843678abf5f61979c748687e66bSherry Moore sizeof (blklist_t), offsetof(blklist_t, bl_node));
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* save scsi_address and vidpid */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth bcopy(sd, &tgt->emul64_tgt_saddr, sizeof (struct scsi_address));
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * The high order 4 bytes of the sector count always come first in
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * emul64.conf. They are followed by the low order 4 bytes. Not
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * all CPU types want them in this order, but laddr_t takes care of
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * this for us. We then pick up geometry (ncyl X nheads X nsect).
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * On 32-bit platforms, fix block size if it's greater than the
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * allowable maximum.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth#if !defined(_LP64)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* insert target structure into list */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function name : emul64_i_initcap
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Return Values : NONE
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Description : Initializes the default target capabilities and
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Sync Rates.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Context : Called from the user thread through attach.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth for (i = 0; i < NTARGETS_WIDE; i++) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth EMUL64_DEBUG(emul64, SCSI_DEBUG, "default cap = 0x%x", cap);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function name : emul64_scsi_getcap()
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Return Values : current value of capability, if defined
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * -1 if capability is not defined
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Description : returns current capability value
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Context : Can be called from different kernel process threads.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Can be called by interrupt thread.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_scsi_getcap(struct scsi_address *ap, char *cap, int whom)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * We don't allow inquiring about capabilities for other targets
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth return (-1);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function name : emul64_scsi_setcap()
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Return Values : 1 - capability exists and can be set to new value
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * 0 - capability could not be set to new value
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * -1 - no such capability
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Description : sets a capability for a target
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Context : Can be called from different kernel process threads.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Can be called by interrupt thread.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_scsi_setcap(struct scsi_address *ap, char *cap, int value, int whom)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * We don't allow setting capabilities for other targets
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth return (-1);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * None of these are settable via
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * the capability interface.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth emul64->nt_total_sectors[ap->a_target][ap->a_lun] = value;
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function name : emul64_scsi_init_pkt
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Return Values : pointer to scsi_pkt, or NULL
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Description : Called by kernel on behalf of a target driver
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * calling scsi_init_pkt(9F).
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Refer to tran_init_pkt(9E) man page
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Context : Can be called from different kernel process threads.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Can be called by interrupt thread.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/* ARGSUSED */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic struct scsi_pkt *
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_scsi_init_pkt(struct scsi_address *ap, struct scsi_pkt *pkt,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth ASSERT(callback == NULL_FUNC || callback == SLEEP_FUNC);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * First step of emul64_scsi_init_pkt: pkt allocation
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth pkt = scsi_hba_pkt_alloc(emul64->emul64_dip, ap, cmdlen,
193974072f41a843678abf5f61979c748687e66bSherry Moore tgtlen, sizeof (struct emul64_cmd), callback, arg);
193974072f41a843678abf5f61979c748687e66bSherry Moore "scsi_hba_pkt_alloc failed");
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Initialize the new pkt - we redundantly initialize
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * all the fields for illustrative purposes.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Second step of emul64_scsi_init_pkt: dma allocation/move
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function name : emul64_scsi_destroy_pkt
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Return Values : none
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Description : Called by kernel on behalf of a target driver
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * calling scsi_destroy_pkt(9F).
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Refer to tran_destroy_pkt(9E) man page
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Context : Can be called from different kernel process threads.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Can be called by interrupt thread.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_scsi_destroy_pkt(struct scsi_address *ap, struct scsi_pkt *pkt)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * emul64_scsi_dmafree inline to make things faster
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Free the mapping.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Free the pkt
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function name : emul64_scsi_dmafree()
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Return Values : none
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Description : free dvma resources
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Context : Can be called from different kernel process threads.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Can be called by interrupt thread.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/*ARGSUSED*/
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_scsi_dmafree(struct scsi_address *ap, struct scsi_pkt *pkt)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function name : emul64_scsi_sync_pkt()
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Return Values : none
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Description : sync dma
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Context : Can be called from different kernel process threads.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Can be called by interrupt thread.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/*ARGSUSED*/
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_scsi_sync_pkt(struct scsi_address *ap, struct scsi_pkt *pkt)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * routine for reset notification setup, to register or cancel.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_scsi_reset_notify(struct scsi_address *ap, int flag,
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth while (p) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth break; /* An entry exists for this target */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth p = kmem_zalloc(sizeof (struct emul64_reset_notify_entry),
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Function name : emul64_scsi_start()
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Return Values : TRAN_FATAL_ERROR - emul64 has been shutdown
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * TRAN_BUSY - request queue is full
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * TRAN_ACCEPT - pkt has been submitted to emul64
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Description : init pkt, start the request
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Context : Can be called from different kernel process threads.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Can be called by interrupt thread.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_scsi_start(struct scsi_address *ap, struct scsi_pkt *pkt)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth ASSERT(mutex_owned(EMUL64_REQ_MUTEX(emul64)) == 0 || ddi_in_panic());
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth ASSERT(mutex_owned(EMUL64_RESP_MUTEX(emul64)) == 0 || ddi_in_panic());
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth EMUL64_DEBUG2(emul64, SCSI_DEBUG, "emul64_scsi_start %x", sp);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth#endif /* EMUL64DEBUG */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * calculate deadline from pkt_time
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Instead of multiplying by 100 (ie. HZ), we multiply by 128 so
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * we can shift and at the same time have a 28% grace period
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * we ignore the rare case of pkt_time == 0 and deal with it
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * in emul64_i_watch()
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if ((emul64_usetaskq == 0) || (pkt->pkt_flags & FLAG_NOINTR) != 0) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * If we are collecting statistics, call
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * taskq_dispatch in no sleep mode, so that we can
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * detect if we are exceeding the queue length that
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * was established in the call to taskq_create in
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * emul64_attach. If the no sleep call fails
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * (returns NULL), the task will be dispatched in
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * sleep mode below.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* Queue was full. dispatch failed. */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth ASSERT(mutex_owned(EMUL64_REQ_MUTEX(emul64)) == 0 || ddi_in_panic());
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth ASSERT(mutex_owned(EMUL64_RESP_MUTEX(emul64)) == 0 || ddi_in_panic());
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_check_cond(struct scsi_pkt *pkt, uchar_t key, uchar_t asc, uchar_t ascq)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* got check, no data transferred and ARQ done */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* for ARQ */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth arq->sts_rqpkt_state = STATE_GOT_BUS | STATE_GOT_TARGET |
193974072f41a843678abf5f61979c748687e66bSherry Moore pkt->pkt_address.a_target, pkt->pkt_address.a_lun);
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * If there is no target, skip the error injection and
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * let the packet be handled normally. This would normally
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * never happen since a_target and a_lun are setup in
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * emul64_scsi_init_pkt.
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * Calculate available sense buffer length. We could just
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * assume sizeof(struct scsi_extended_sense) but hopefully
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * that limitation will go away soon.
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd (sizeof (struct scsi_arq_status) -
193974072f41a843678abf5f61979c748687e66bSherry Moore sizeof (struct scsi_extended_sense));
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd /* for ARQ */
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd arq->sts_rqpkt_state = STATE_GOT_BUS | STATE_GOT_TARGET |
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd /* Copy sense data */
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd /* Return current error injection state */
cefe316e0be5ef06d07788f53ad6c498a0701d1dpdemul64_error_inject_req(struct emul64 *emul64, intptr_t arg)
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd /* Check args */
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd sizeof (error_inj_req), 0) != 0) {
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd /* Make sure device exists */
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd /* Free old sense buffer if we have one */
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * Now handle error injection request. If error injection
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * is requested we will return the sense data provided for
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * any I/O to this target until told to stop.
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd tgt->emul64_einj_sense_length = error_inj_req.eccd_sns_dlen;
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd tgt->emul64_einj_pkt_state = error_inj_req.eccd_pkt_state;
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd tgt->emul64_einj_pkt_reason = error_inj_req.eccd_pkt_reason;
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd tgt->emul64_einj_scsi_status = error_inj_req.eccd_scsi_status;
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd /* Copy sense data */
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd "emul64: sense data copy in failed\n");
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd return (0);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * If error injection is configured to return with
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * no data return now without handling the command.
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * This is how normal check conditions work.
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * If the error injection state is ERR_INJ_ENABLE
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * (or if error injection is disabled) continue and
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * handle the command. This would be used for
cefe316e0be5ef06d07788f53ad6c498a0701d1dpd * KEY_RECOVERABLE_ERROR type conditions.
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* ASC 0x24 INVALID FIELD IN CDB */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* Don't complain */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void
193974072f41a843678abf5f61979c748687e66bSherry Moore pkt->pkt_address.a_target, pkt->pkt_address.a_lun);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/* ARGSUSED */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_scsi_abort(struct scsi_address *ap, struct scsi_pkt *pkt)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth return (1);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/* ARGSUSED */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth return (1);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (ddi_copyin((void *)arg, tgtr, sizeof (*tgtr), 0) != 0) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth *tgtp = find_tgt(emul64, tgtr->emul64_target, tgtr->emul64_lun);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth cmn_err(CE_WARN, "emul64: ioctl - no target for %d,%d on %d",
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth return (0);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth emul64 = (struct emul64 *)ddi_get_soft_state(emul64_state, instance);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth cmn_err(CE_WARN, "emul64: ioctl - no softstate for %d\n",
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth switch (cmd) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (rv == 0) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (rv == 0) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (rv == 0) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/* ARGSUSED */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* Find spot in list */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth cur = emul64_find_nowrite(tgt, sb, blkcnt, &overlap, &prev);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* Insert into list */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth return (0);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/* ARGSUSED */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* Find spot in list */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth cur = emul64_find_nowrite(tgt, sb, blkcnt, &overlap, &prev);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* Remove from list */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth cmn_err(CE_WARN, "emul64: EMUL64_WRITE_ON 0x%llx,0x%lx "
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth cmn_err(CE_WARN, "emul64: EMUL64_WRITE_ON 0x%llx,0x%lx "
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth /* Find spot in list */
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth *overlap = emul64_overlap(&cur->emul64_blocked, sb, blkcnt);
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_overlap(emul64_range_t *rng, diskaddr_t sb, size_t cnt)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if ((rng->emul64_sb == sb) && (rng->emul64_blkcnt == cnt))
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth ((sb + cnt) <= (rng->emul64_sb + rng->emul64_blkcnt))) {
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth * Error logging, printing, and debug print routines
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth/*VARARGS3*/
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_i_log(struct emul64 *emul64, int level, char *fmt, ...)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthstatic void
b1dd958f54f8bfa984d306bb8ca8264855761d7bcthemul64_debug_dump_cdb(struct scsi_address *ap, struct scsi_pkt *pkt)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth (void) snprintf(buf, sizeof (buf), "emul64%d: <%d,%d> ",
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth *p++ = '[';
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth if (i != 0)
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth *p++ = ' ';
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth *p++ = ']';
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth *p++ = '\n';
b1dd958f54f8bfa984d306bb8ca8264855761d7bcth#endif /* EMUL64DEBUG */