diff options
Diffstat (limited to 'sys/cam/ctl/ctl_frontend_internal.c')
| -rw-r--r-- | sys/cam/ctl/ctl_frontend_internal.c | 1612 |
1 files changed, 0 insertions, 1612 deletions
diff --git a/sys/cam/ctl/ctl_frontend_internal.c b/sys/cam/ctl/ctl_frontend_internal.c deleted file mode 100644 index 4768292..0000000 --- a/sys/cam/ctl/ctl_frontend_internal.c +++ /dev/null @@ -1,1612 +0,0 @@ -/*- - * Copyright (c) 2004, 2005 Silicon Graphics International Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_frontend_internal.c#5 $ - */ -/* - * CTL kernel internal frontend target driver. This allows kernel-level - * clients to send commands into CTL. - * - * This has elements of a FETD (e.g. it has to set tag numbers, initiator, - * port, target, and LUN) and elements of an initiator (LUN discovery and - * probing, error recovery, command initiation). Even though this has some - * initiator type elements, this is not intended to be a full fledged - * initiator layer. It is only intended to send a limited number of - * commands to a well known target layer. - * - * To be able to fulfill the role of a full initiator layer, it would need - * a whole lot more functionality. - * - * Author: Ken Merry <ken@FreeBSD.org> - * - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> -#include <sys/types.h> -#include <sys/malloc.h> -#include <sys/module.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/condvar.h> -#include <sys/queue.h> -#include <sys/sbuf.h> -#include <sys/sysctl.h> -#include <vm/uma.h> -#include <cam/scsi/scsi_all.h> -#include <cam/scsi/scsi_da.h> -#include <cam/ctl/ctl_io.h> -#include <cam/ctl/ctl.h> -#include <cam/ctl/ctl_frontend.h> -#include <cam/ctl/ctl_frontend_internal.h> -#include <cam/ctl/ctl_backend.h> -#include <cam/ctl/ctl_ioctl.h> -#include <cam/ctl/ctl_util.h> -#include <cam/ctl/ctl_ha.h> -#include <cam/ctl/ctl_private.h> -#include <cam/ctl/ctl_debug.h> -#include <cam/ctl/ctl_scsi_all.h> -#include <cam/ctl/ctl_error.h> - -/* - * Task structure: - * - overall metatask, different potential metatask types (e.g. forced - * shutdown, gentle shutdown) - * - forced shutdown metatask: - * - states: report luns, pending, done? - * - list of luns pending, with the relevant I/O for that lun attached. - * This would allow moving ahead on LUNs with no errors, and going - * into error recovery on LUNs with problems. Per-LUN states might - * include inquiry, stop/offline, done. - * - * Use LUN enable for LUN list instead of getting it manually? We'd still - * need inquiry data for each LUN. - * - * How to handle processor LUN w.r.t. found/stopped counts? - */ -#ifdef oldapi -typedef enum { - CFI_TASK_NONE, - CFI_TASK_SHUTDOWN, - CFI_TASK_STARTUP -} cfi_tasktype; - -struct cfi_task_startstop { - int total_luns; - int luns_complete; - int luns_failed; - cfi_cb_t callback; - void *callback_arg; - /* XXX KDM add more fields here */ -}; - -union cfi_taskinfo { - struct cfi_task_startstop startstop; -}; - -struct cfi_metatask { - cfi_tasktype tasktype; - cfi_mt_status status; - union cfi_taskinfo taskinfo; - void *cfi_context; - STAILQ_ENTRY(cfi_metatask) links; -}; -#endif - -typedef enum { - CFI_ERR_RETRY = 0x000, - CFI_ERR_FAIL = 0x001, - CFI_ERR_LUN_RESET = 0x002, - CFI_ERR_MASK = 0x0ff, - CFI_ERR_NO_DECREMENT = 0x100 -} cfi_error_action; - -typedef enum { - CFI_ERR_SOFT, - CFI_ERR_HARD -} cfi_error_policy; - -typedef enum { - CFI_LUN_INQUIRY, - CFI_LUN_READCAPACITY, - CFI_LUN_READCAPACITY_16, - CFI_LUN_READY -} cfi_lun_state; - -struct cfi_lun { - int lun_id; - struct scsi_inquiry_data inq_data; - uint64_t num_blocks; - uint32_t blocksize; - int blocksize_powerof2; - uint32_t cur_tag_num; - cfi_lun_state state; - struct cfi_softc *softc; - STAILQ_HEAD(, cfi_lun_io) io_list; - STAILQ_ENTRY(cfi_lun) links; -}; - -struct cfi_lun_io { - struct cfi_lun *lun; - struct cfi_metatask *metatask; - cfi_error_policy policy; - void (*done_function)(union ctl_io *io); - union ctl_io *ctl_io; - struct cfi_lun_io *orig_lun_io; - STAILQ_ENTRY(cfi_lun_io) links; -}; - -typedef enum { - CFI_NONE = 0x00, - CFI_ONLINE = 0x01, -} cfi_flags; - -struct cfi_softc { - struct ctl_port port; - char fe_name[40]; - struct mtx lock; - cfi_flags flags; - STAILQ_HEAD(, cfi_lun) lun_list; - STAILQ_HEAD(, cfi_metatask) metatask_list; -}; - -MALLOC_DEFINE(M_CTL_CFI, "ctlcfi", "CTL CFI"); - -static uma_zone_t cfi_lun_zone; -static uma_zone_t cfi_metatask_zone; - -static struct cfi_softc fetd_internal_softc; - -int cfi_init(void); -void cfi_shutdown(void) __unused; -static void cfi_online(void *arg); -static void cfi_offline(void *arg); -static int cfi_lun_enable(void *arg, int lun_id); -static int cfi_lun_disable(void *arg, int lun_id); -static void cfi_datamove(union ctl_io *io); -static cfi_error_action cfi_checkcond_parse(union ctl_io *io, - struct cfi_lun_io *lun_io); -static cfi_error_action cfi_error_parse(union ctl_io *io, - struct cfi_lun_io *lun_io); -static void cfi_init_io(union ctl_io *io, struct cfi_lun *lun, - struct cfi_metatask *metatask, cfi_error_policy policy, - int retries, struct cfi_lun_io *orig_lun_io, - void (*done_function)(union ctl_io *io)); -static void cfi_done(union ctl_io *io); -static void cfi_lun_probe_done(union ctl_io *io); -static void cfi_lun_probe(struct cfi_lun *lun, int have_lock); -static void cfi_metatask_done(struct cfi_softc *softc, - struct cfi_metatask *metatask); -static void cfi_metatask_bbr_errorparse(struct cfi_metatask *metatask, - union ctl_io *io); -static void cfi_metatask_io_done(union ctl_io *io); -static void cfi_err_recovery_done(union ctl_io *io); -static void cfi_lun_io_done(union ctl_io *io); - -static struct ctl_frontend cfi_frontend = -{ - .name = "kernel", - .init = cfi_init, - .shutdown = cfi_shutdown, -}; -CTL_FRONTEND_DECLARE(ctlcfi, cfi_frontend); - -int -cfi_init(void) -{ - struct cfi_softc *softc; - struct ctl_port *port; - int retval; - - softc = &fetd_internal_softc; - - port = &softc->port; - - retval = 0; - - if (sizeof(struct cfi_lun_io) > CTL_PORT_PRIV_SIZE) { - printf("%s: size of struct cfi_lun_io %zd > " - "CTL_PORT_PRIV_SIZE %d\n", __func__, - sizeof(struct cfi_lun_io), - CTL_PORT_PRIV_SIZE); - } - memset(softc, 0, sizeof(*softc)); - - mtx_init(&softc->lock, "CTL frontend mutex", NULL, MTX_DEF); - STAILQ_INIT(&softc->lun_list); - STAILQ_INIT(&softc->metatask_list); - sprintf(softc->fe_name, "kernel"); - port->frontend = &cfi_frontend; - port->port_type = CTL_PORT_INTERNAL; - port->num_requested_ctl_io = 100; - port->port_name = softc->fe_name; - port->port_online = cfi_online; - port->port_offline = cfi_offline; - port->onoff_arg = softc; - port->lun_enable = cfi_lun_enable; - port->lun_disable = cfi_lun_disable; - port->targ_lun_arg = softc; - port->fe_datamove = cfi_datamove; - port->fe_done = cfi_done; - port->max_targets = 15; - port->max_target_id = 15; - - if (ctl_port_register(port) != 0) - { - printf("%s: internal frontend registration failed\n", __func__); - return (0); - } - - cfi_lun_zone = uma_zcreate("cfi_lun", sizeof(struct cfi_lun), - NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); - cfi_metatask_zone = uma_zcreate("cfi_metatask", sizeof(struct cfi_metatask), - NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); - - return (0); -} - -void -cfi_shutdown(void) -{ - struct cfi_softc *softc; - - softc = &fetd_internal_softc; - - /* - * XXX KDM need to clear out any I/O pending on each LUN. - */ - if (ctl_port_deregister(&softc->port) != 0) - printf("%s: ctl_frontend_deregister() failed\n", __func__); - - uma_zdestroy(cfi_lun_zone); - uma_zdestroy(cfi_metatask_zone); -} - -static void -cfi_online(void *arg) -{ - struct cfi_softc *softc; - struct cfi_lun *lun; - - softc = (struct cfi_softc *)arg; - - softc->flags |= CFI_ONLINE; - - /* - * Go through and kick off the probe for each lun. Should we check - * the LUN flags here to determine whether or not to probe it? - */ - mtx_lock(&softc->lock); - STAILQ_FOREACH(lun, &softc->lun_list, links) - cfi_lun_probe(lun, /*have_lock*/ 1); - mtx_unlock(&softc->lock); -} - -static void -cfi_offline(void *arg) -{ - struct cfi_softc *softc; - - softc = (struct cfi_softc *)arg; - - softc->flags &= ~CFI_ONLINE; -} - -static int -cfi_lun_enable(void *arg, int lun_id) -{ - struct cfi_softc *softc; - struct cfi_lun *lun; - int found; - - softc = (struct cfi_softc *)arg; - - found = 0; - mtx_lock(&softc->lock); - STAILQ_FOREACH(lun, &softc->lun_list, links) { - if (lun->lun_id == lun_id) { - found = 1; - break; - } - } - mtx_unlock(&softc->lock); - - /* - * If we already have this target/LUN, there is no reason to add - * it to our lists again. - */ - if (found != 0) - return (0); - - lun = uma_zalloc(cfi_lun_zone, M_NOWAIT | M_ZERO); - if (lun == NULL) { - printf("%s: unable to allocate LUN structure\n", __func__); - return (1); - } - - lun->lun_id = lun_id; - lun->cur_tag_num = 0; - lun->state = CFI_LUN_INQUIRY; - lun->softc = softc; - STAILQ_INIT(&lun->io_list); - - mtx_lock(&softc->lock); - STAILQ_INSERT_TAIL(&softc->lun_list, lun, links); - mtx_unlock(&softc->lock); - - cfi_lun_probe(lun, /*have_lock*/ 0); - - return (0); -} - -static int -cfi_lun_disable(void *arg, int lun_id) -{ - struct cfi_softc *softc; - struct cfi_lun *lun; - int found; - - softc = (struct cfi_softc *)arg; - - found = 0; - - /* - * XXX KDM need to do an invalidate and then a free when any - * pending I/O has completed. Or do we? CTL won't free a LUN - * while any I/O is pending. So we won't get this notification - * unless any I/O we have pending on a LUN has completed. - */ - mtx_lock(&softc->lock); - STAILQ_FOREACH(lun, &softc->lun_list, links) { - if (lun->lun_id == lun_id) { - found = 1; - break; - } - } - if (found != 0) - STAILQ_REMOVE(&softc->lun_list, lun, cfi_lun, links); - - mtx_unlock(&softc->lock); - - if (found == 0) { - printf("%s: can't find lun %d\n", __func__, lun_id); - return (1); - } - - uma_zfree(cfi_lun_zone, lun); - - return (0); -} - -static void -cfi_datamove(union ctl_io *io) -{ - struct ctl_sg_entry *ext_sglist, *kern_sglist; - struct ctl_sg_entry ext_entry, kern_entry; - int ext_sglen, ext_sg_entries, kern_sg_entries; - int ext_sg_start, ext_offset; - int len_to_copy, len_copied; - int kern_watermark, ext_watermark; - int ext_sglist_malloced; - struct ctl_scsiio *ctsio; - int i, j; - - ext_sglist_malloced = 0; - ext_sg_start = 0; - ext_offset = 0; - ext_sglist = NULL; - - CTL_DEBUG_PRINT(("%s\n", __func__)); - - ctsio = &io->scsiio; - - /* - * If this is the case, we're probably doing a BBR read and don't - * actually need to transfer the data. This will effectively - * bit-bucket the data. - */ - if (ctsio->ext_data_ptr == NULL) - goto bailout; - - /* - * To simplify things here, if we have a single buffer, stick it in - * a S/G entry and just make it a single entry S/G list. - */ - if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { - int len_seen; - - ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); - - ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL_CFI, - M_WAITOK); - ext_sglist_malloced = 1; - if (memcpy(ext_sglist, ctsio->ext_data_ptr, ext_sglen) != 0) { - ctl_set_internal_failure(ctsio, - /*sks_valid*/ 0, - /*retry_count*/ 0); - goto bailout; - } - ext_sg_entries = ctsio->ext_sg_entries; - len_seen = 0; - for (i = 0; i < ext_sg_entries; i++) { - if ((len_seen + ext_sglist[i].len) >= - ctsio->ext_data_filled) { - ext_sg_start = i; - ext_offset = ctsio->ext_data_filled - len_seen; - break; - } - len_seen += ext_sglist[i].len; - } - } else { - ext_sglist = &ext_entry; - ext_sglist->addr = ctsio->ext_data_ptr; - ext_sglist->len = ctsio->ext_data_len; - ext_sg_entries = 1; - ext_sg_start = 0; - ext_offset = ctsio->ext_data_filled; - } - - if (ctsio->kern_sg_entries > 0) { - kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; - kern_sg_entries = ctsio->kern_sg_entries; - } else { - kern_sglist = &kern_entry; - kern_sglist->addr = ctsio->kern_data_ptr; - kern_sglist->len = ctsio->kern_data_len; - kern_sg_entries = 1; - } - - - kern_watermark = 0; - ext_watermark = ext_offset; - len_copied = 0; - for (i = ext_sg_start, j = 0; - i < ext_sg_entries && j < kern_sg_entries;) { - uint8_t *ext_ptr, *kern_ptr; - - len_to_copy = MIN(ext_sglist[i].len - ext_watermark, - kern_sglist[j].len - kern_watermark); - - ext_ptr = (uint8_t *)ext_sglist[i].addr; - ext_ptr = ext_ptr + ext_watermark; - if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { - /* - * XXX KDM fix this! - */ - panic("need to implement bus address support"); -#if 0 - kern_ptr = bus_to_virt(kern_sglist[j].addr); -#endif - } else - kern_ptr = (uint8_t *)kern_sglist[j].addr; - kern_ptr = kern_ptr + kern_watermark; - - kern_watermark += len_to_copy; - ext_watermark += len_to_copy; - - if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == - CTL_FLAG_DATA_IN) { - CTL_DEBUG_PRINT(("%s: copying %d bytes to user\n", - __func__, len_to_copy)); - CTL_DEBUG_PRINT(("%s: from %p to %p\n", __func__, - kern_ptr, ext_ptr)); - memcpy(ext_ptr, kern_ptr, len_to_copy); - } else { - CTL_DEBUG_PRINT(("%s: copying %d bytes from user\n", - __func__, len_to_copy)); - CTL_DEBUG_PRINT(("%s: from %p to %p\n", __func__, - ext_ptr, kern_ptr)); - memcpy(kern_ptr, ext_ptr, len_to_copy); - } - - len_copied += len_to_copy; - - if (ext_sglist[i].len == ext_watermark) { - i++; - ext_watermark = 0; - } - - if (kern_sglist[j].len == kern_watermark) { - j++; - kern_watermark = 0; - } - } - - ctsio->ext_data_filled += len_copied; - - CTL_DEBUG_PRINT(("%s: ext_sg_entries: %d, kern_sg_entries: %d\n", - __func__, ext_sg_entries, kern_sg_entries)); - CTL_DEBUG_PRINT(("%s: ext_data_len = %d, kern_data_len = %d\n", - __func__, ctsio->ext_data_len, ctsio->kern_data_len)); - - - /* XXX KDM set residual?? */ -bailout: - - if (ext_sglist_malloced != 0) - free(ext_sglist, M_CTL_CFI); - - io->scsiio.be_move_done(io); - - return; -} - -/* - * For any sort of check condition, busy, etc., we just retry. We do not - * decrement the retry count for unit attention type errors. These are - * normal, and we want to save the retry count for "real" errors. Otherwise, - * we could end up with situations where a command will succeed in some - * situations and fail in others, depending on whether a unit attention is - * pending. Also, some of our error recovery actions, most notably the - * LUN reset action, will cause a unit attention. - * - * We can add more detail here later if necessary. - */ -static cfi_error_action -cfi_checkcond_parse(union ctl_io *io, struct cfi_lun_io *lun_io) -{ - cfi_error_action error_action; - int error_code, sense_key, asc, ascq; - - /* - * Default to retrying the command. - */ - error_action = CFI_ERR_RETRY; - - scsi_extract_sense_len(&io->scsiio.sense_data, - io->scsiio.sense_len, - &error_code, - &sense_key, - &asc, - &ascq, - /*show_errors*/ 1); - - switch (error_code) { - case SSD_DEFERRED_ERROR: - case SSD_DESC_DEFERRED_ERROR: - error_action |= CFI_ERR_NO_DECREMENT; - break; - case SSD_CURRENT_ERROR: - case SSD_DESC_CURRENT_ERROR: - default: { - switch (sense_key) { - case SSD_KEY_UNIT_ATTENTION: - error_action |= CFI_ERR_NO_DECREMENT; - break; - case SSD_KEY_HARDWARE_ERROR: - /* - * This is our generic "something bad happened" - * error code. It often isn't recoverable. - */ - if ((asc == 0x44) && (ascq == 0x00)) - error_action = CFI_ERR_FAIL; - break; - case SSD_KEY_NOT_READY: - /* - * If the LUN is powered down, there likely isn't - * much point in retrying right now. - */ - if ((asc == 0x04) && (ascq == 0x02)) - error_action = CFI_ERR_FAIL; - /* - * If the LUN is offline, there probably isn't much - * point in retrying, either. - */ - if ((asc == 0x04) && (ascq == 0x03)) - error_action = CFI_ERR_FAIL; - break; - } - } - } - - return (error_action); -} - -static cfi_error_action -cfi_error_parse(union ctl_io *io, struct cfi_lun_io *lun_io) -{ - cfi_error_action error_action; - - error_action = CFI_ERR_RETRY; - - switch (io->io_hdr.io_type) { - case CTL_IO_SCSI: - switch (io->io_hdr.status & CTL_STATUS_MASK) { - case CTL_SCSI_ERROR: - switch (io->scsiio.scsi_status) { - case SCSI_STATUS_RESERV_CONFLICT: - /* - * For a reservation conflict, we'll usually - * want the hard error recovery policy, so - * we'll reset the LUN. - */ - if (lun_io->policy == CFI_ERR_HARD) - error_action = - CFI_ERR_LUN_RESET; - else - error_action = - CFI_ERR_RETRY; - break; - case SCSI_STATUS_CHECK_COND: - default: - error_action = cfi_checkcond_parse(io, lun_io); - break; - } - break; - default: - error_action = CFI_ERR_RETRY; - break; - } - break; - case CTL_IO_TASK: - /* - * In theory task management commands shouldn't fail... - */ - error_action = CFI_ERR_RETRY; - break; - default: - printf("%s: invalid ctl_io type %d\n", __func__, - io->io_hdr.io_type); - panic("%s: invalid ctl_io type %d\n", __func__, - io->io_hdr.io_type); - break; - } - - return (error_action); -} - -static void -cfi_init_io(union ctl_io *io, struct cfi_lun *lun, - struct cfi_metatask *metatask, cfi_error_policy policy, int retries, - struct cfi_lun_io *orig_lun_io, - void (*done_function)(union ctl_io *io)) -{ - struct cfi_lun_io *lun_io; - - io->io_hdr.nexus.initid.id = 7; - io->io_hdr.nexus.targ_port = lun->softc->port.targ_port; - io->io_hdr.nexus.targ_target.id = 0; - io->io_hdr.nexus.targ_lun = lun->lun_id; - io->io_hdr.retries = retries; - lun_io = (struct cfi_lun_io *)io->io_hdr.port_priv; - io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = lun_io; - lun_io->lun = lun; - lun_io->metatask = metatask; - lun_io->ctl_io = io; - lun_io->policy = policy; - lun_io->orig_lun_io = orig_lun_io; - lun_io->done_function = done_function; - /* - * We only set the tag number for SCSI I/Os. For task management - * commands, the tag number is only really needed for aborts, so - * the caller can set it if necessary. - */ - switch (io->io_hdr.io_type) { - case CTL_IO_SCSI: - io->scsiio.tag_num = lun->cur_tag_num++; - break; - case CTL_IO_TASK: - default: - break; - } -} - -static void -cfi_done(union ctl_io *io) -{ - struct cfi_lun_io *lun_io; - struct cfi_softc *softc; - struct cfi_lun *lun; - - lun_io = (struct cfi_lun_io *) - io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; - - lun = lun_io->lun; - softc = lun->softc; - - /* - * Very minimal retry logic. We basically retry if we got an error - * back, and the retry count is greater than 0. If we ever want - * more sophisticated initiator type behavior, the CAM error - * recovery code in ../common might be helpful. - */ - if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) - && (io->io_hdr.retries > 0)) { - ctl_io_status old_status; - cfi_error_action error_action; - - error_action = cfi_error_parse(io, lun_io); - - switch (error_action & CFI_ERR_MASK) { - case CFI_ERR_FAIL: - goto done; - break; /* NOTREACHED */ - case CFI_ERR_LUN_RESET: { - union ctl_io *new_io; - struct cfi_lun_io *new_lun_io; - - new_io = ctl_alloc_io(softc->port.ctl_pool_ref); - ctl_zero_io(new_io); - - new_io->io_hdr.io_type = CTL_IO_TASK; - new_io->taskio.task_action = CTL_TASK_LUN_RESET; - - cfi_init_io(new_io, - /*lun*/ lun_io->lun, - /*metatask*/ NULL, - /*policy*/ CFI_ERR_SOFT, - /*retries*/ 0, - /*orig_lun_io*/lun_io, - /*done_function*/ cfi_err_recovery_done); - - - new_lun_io = (struct cfi_lun_io *) - new_io->io_hdr.port_priv; - - mtx_lock(&lun->softc->lock); - STAILQ_INSERT_TAIL(&lun->io_list, new_lun_io, links); - mtx_unlock(&lun->softc->lock); - - io = new_io; - break; - } - case CFI_ERR_RETRY: - default: - if ((error_action & CFI_ERR_NO_DECREMENT) == 0) - io->io_hdr.retries--; - break; - } - - old_status = io->io_hdr.status; - io->io_hdr.status = CTL_STATUS_NONE; -#if 0 - io->io_hdr.flags &= ~CTL_FLAG_ALREADY_DONE; -#endif - io->io_hdr.flags &= ~CTL_FLAG_ABORT; - io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; - - if (ctl_queue(io) != CTL_RETVAL_COMPLETE) { - printf("%s: error returned from ctl_queue()!\n", - __func__); - io->io_hdr.status = old_status; - } else - return; - } -done: - lun_io->done_function(io); -} - -static void -cfi_lun_probe_done(union ctl_io *io) -{ - struct cfi_lun *lun; - struct cfi_lun_io *lun_io; - - lun_io = (struct cfi_lun_io *) - io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; - lun = lun_io->lun; - - switch (lun->state) { - case CFI_LUN_INQUIRY: { - if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) { - /* print out something here?? */ - printf("%s: LUN %d probe failed because inquiry " - "failed\n", __func__, lun->lun_id); - ctl_io_error_print(io, NULL); - } else { - - if (SID_TYPE(&lun->inq_data) != T_DIRECT) { - char path_str[40]; - - lun->state = CFI_LUN_READY; - ctl_scsi_path_string(io, path_str, - sizeof(path_str)); - printf("%s", path_str); - scsi_print_inquiry(&lun->inq_data); - } else { - lun->state = CFI_LUN_READCAPACITY; - cfi_lun_probe(lun, /*have_lock*/ 0); - } - } - mtx_lock(&lun->softc->lock); - STAILQ_REMOVE(&lun->io_list, lun_io, cfi_lun_io, links); - mtx_unlock(&lun->softc->lock); - ctl_free_io(io); - break; - } - case CFI_LUN_READCAPACITY: - case CFI_LUN_READCAPACITY_16: { - uint64_t maxlba; - uint32_t blocksize; - - maxlba = 0; - blocksize = 0; - - if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) { - printf("%s: LUN %d probe failed because READ CAPACITY " - "failed\n", __func__, lun->lun_id); - ctl_io_error_print(io, NULL); - } else { - - if (lun->state == CFI_LUN_READCAPACITY) { - struct scsi_read_capacity_data *rdcap; - - rdcap = (struct scsi_read_capacity_data *) - io->scsiio.ext_data_ptr; - - maxlba = scsi_4btoul(rdcap->addr); - blocksize = scsi_4btoul(rdcap->length); - if (blocksize == 0) { - printf("%s: LUN %d has invalid " - "blocksize 0, probe aborted\n", - __func__, lun->lun_id); - } else if (maxlba == 0xffffffff) { - lun->state = CFI_LUN_READCAPACITY_16; - cfi_lun_probe(lun, /*have_lock*/ 0); - } else - lun->state = CFI_LUN_READY; - } else { - struct scsi_read_capacity_data_long *rdcap_long; - - rdcap_long = (struct - scsi_read_capacity_data_long *) - io->scsiio.ext_data_ptr; - maxlba = scsi_8btou64(rdcap_long->addr); - blocksize = scsi_4btoul(rdcap_long->length); - - if (blocksize == 0) { - printf("%s: LUN %d has invalid " - "blocksize 0, probe aborted\n", - __func__, lun->lun_id); - } else - lun->state = CFI_LUN_READY; - } - } - - if (lun->state == CFI_LUN_READY) { - char path_str[40]; - - lun->num_blocks = maxlba + 1; - lun->blocksize = blocksize; - - /* - * If this is true, the blocksize is a power of 2. - * We already checked for 0 above. - */ - if (((blocksize - 1) & blocksize) == 0) { - int i; - - for (i = 0; i < 32; i++) { - if ((blocksize & (1 << i)) != 0) { - lun->blocksize_powerof2 = i; - break; - } - } - } - ctl_scsi_path_string(io, path_str,sizeof(path_str)); - printf("%s", path_str); - scsi_print_inquiry(&lun->inq_data); - printf("%s %ju blocks, blocksize %d\n", path_str, - (uintmax_t)maxlba + 1, blocksize); - } - mtx_lock(&lun->softc->lock); - STAILQ_REMOVE(&lun->io_list, lun_io, cfi_lun_io, links); - mtx_unlock(&lun->softc->lock); - free(io->scsiio.ext_data_ptr, M_CTL_CFI); - ctl_free_io(io); - break; - } - case CFI_LUN_READY: - default: - mtx_lock(&lun->softc->lock); - /* How did we get here?? */ - STAILQ_REMOVE(&lun->io_list, lun_io, cfi_lun_io, links); - mtx_unlock(&lun->softc->lock); - ctl_free_io(io); - break; - } -} - -static void -cfi_lun_probe(struct cfi_lun *lun, int have_lock) -{ - - if (have_lock == 0) - mtx_lock(&lun->softc->lock); - if ((lun->softc->flags & CFI_ONLINE) == 0) { - if (have_lock == 0) - mtx_unlock(&lun->softc->lock); - return; - } - if (have_lock == 0) - mtx_unlock(&lun->softc->lock); - - switch (lun->state) { - case CFI_LUN_INQUIRY: { - struct cfi_lun_io *lun_io; - union ctl_io *io; - - io = ctl_alloc_io(lun->softc->port.ctl_pool_ref); - ctl_scsi_inquiry(io, - /*data_ptr*/(uint8_t *)&lun->inq_data, - /*data_len*/ sizeof(lun->inq_data), - /*byte2*/ 0, - /*page_code*/ 0, - /*tag_type*/ CTL_TAG_SIMPLE, - /*control*/ 0); - - cfi_init_io(io, - /*lun*/ lun, - /*metatask*/ NULL, - /*policy*/ CFI_ERR_SOFT, - /*retries*/ 5, - /*orig_lun_io*/ NULL, - /*done_function*/ - cfi_lun_probe_done); - - lun_io = (struct cfi_lun_io *)io->io_hdr.port_priv; - - if (have_lock == 0) - mtx_lock(&lun->softc->lock); - STAILQ_INSERT_TAIL(&lun->io_list, lun_io, links); - if (have_lock == 0) - mtx_unlock(&lun->softc->lock); - - if (ctl_queue(io) != CTL_RETVAL_COMPLETE) { - printf("%s: error returned from ctl_queue()!\n", - __func__); - STAILQ_REMOVE(&lun->io_list, lun_io, - cfi_lun_io, links); - ctl_free_io(io); - } - break; - } - case CFI_LUN_READCAPACITY: - case CFI_LUN_READCAPACITY_16: { - struct cfi_lun_io *lun_io; - uint8_t *dataptr; - union ctl_io *io; - - io = ctl_alloc_io(lun->softc->port.ctl_pool_ref); - - dataptr = malloc(sizeof(struct scsi_read_capacity_data_long), - M_CTL_CFI, M_NOWAIT); - if (dataptr == NULL) { - printf("%s: unable to allocate SCSI read capacity " - "buffer for lun %d\n", __func__, lun->lun_id); - return; - } - if (lun->state == CFI_LUN_READCAPACITY) { - ctl_scsi_read_capacity(io, - /*data_ptr*/ dataptr, - /*data_len*/ - sizeof(struct scsi_read_capacity_data_long), - /*addr*/ 0, - /*reladr*/ 0, - /*pmi*/ 0, - /*tag_type*/ CTL_TAG_SIMPLE, - /*control*/ 0); - } else { - ctl_scsi_read_capacity_16(io, - /*data_ptr*/ dataptr, - /*data_len*/ - sizeof(struct scsi_read_capacity_data_long), - /*addr*/ 0, - /*reladr*/ 0, - /*pmi*/ 0, - /*tag_type*/ CTL_TAG_SIMPLE, - /*control*/ 0); - } - cfi_init_io(io, - /*lun*/ lun, - /*metatask*/ NULL, - /*policy*/ CFI_ERR_SOFT, - /*retries*/ 7, - /*orig_lun_io*/ NULL, - /*done_function*/ cfi_lun_probe_done); - - lun_io = (struct cfi_lun_io *)io->io_hdr.port_priv; - - if (have_lock == 0) - mtx_lock(&lun->softc->lock); - STAILQ_INSERT_TAIL(&lun->io_list, lun_io, links); - if (have_lock == 0) - mtx_unlock(&lun->softc->lock); - - if (ctl_queue(io) != CTL_RETVAL_COMPLETE) { - printf("%s: error returned from ctl_queue()!\n", - __func__); - STAILQ_REMOVE(&lun->io_list, lun_io, - cfi_lun_io, links); - free(dataptr, M_CTL_CFI); - ctl_free_io(io); - } - break; - } - case CFI_LUN_READY: - default: - /* Why were we called? */ - break; - } -} - -static void -cfi_metatask_done(struct cfi_softc *softc, struct cfi_metatask *metatask) -{ - mtx_lock(&softc->lock); - STAILQ_REMOVE(&softc->metatask_list, metatask, cfi_metatask, links); - mtx_unlock(&softc->lock); - - /* - * Return status to the caller. Caller allocated storage, and is - * responsible for calling cfi_free_metatask to release it once - * they've seen the status. - */ - metatask->callback(metatask->callback_arg, metatask); -} - -static void -cfi_metatask_bbr_errorparse(struct cfi_metatask *metatask, union ctl_io *io) -{ - int error_code, sense_key, asc, ascq; - - if (metatask->tasktype != CFI_TASK_BBRREAD) - return; - - if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { - metatask->status = CFI_MT_SUCCESS; - metatask->taskinfo.bbrread.status = CFI_BBR_SUCCESS; - return; - } - - if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = CFI_BBR_ERROR; - return; - } - - metatask->taskinfo.bbrread.scsi_status = io->scsiio.scsi_status; - memcpy(&metatask->taskinfo.bbrread.sense_data, &io->scsiio.sense_data, - MIN(sizeof(metatask->taskinfo.bbrread.sense_data), - sizeof(io->scsiio.sense_data))); - - if (io->scsiio.scsi_status == SCSI_STATUS_RESERV_CONFLICT) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = CFI_BBR_RESERV_CONFLICT; - return; - } - - if (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = CFI_BBR_SCSI_ERROR; - return; - } - - scsi_extract_sense_len(&io->scsiio.sense_data, - io->scsiio.sense_len, - &error_code, - &sense_key, - &asc, - &ascq, - /*show_errors*/ 1); - - switch (error_code) { - case SSD_DEFERRED_ERROR: - case SSD_DESC_DEFERRED_ERROR: - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = CFI_BBR_SCSI_ERROR; - break; - case SSD_CURRENT_ERROR: - case SSD_DESC_CURRENT_ERROR: - default: { - struct scsi_sense_data *sense; - - sense = &io->scsiio.sense_data; - - if ((asc == 0x04) && (ascq == 0x02)) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = CFI_BBR_LUN_STOPPED; - } else if ((asc == 0x04) && (ascq == 0x03)) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = - CFI_BBR_LUN_OFFLINE_CTL; - } else if ((asc == 0x44) && (ascq == 0x00)) { -#ifdef NEEDTOPORT - if (sense->sense_key_spec[0] & SSD_SCS_VALID) { - uint16_t retry_count; - - retry_count = sense->sense_key_spec[1] << 8 | - sense->sense_key_spec[2]; - if (((retry_count & 0xf000) == CSC_RAIDCORE) - && ((retry_count & 0x0f00) == CSC_SHELF_SW) - && ((retry_count & 0xff) == - RC_STS_DEVICE_OFFLINE)) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = - CFI_BBR_LUN_OFFLINE_RC; - } else { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = - CFI_BBR_SCSI_ERROR; - } - } else { -#endif /* NEEDTOPORT */ - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = - CFI_BBR_SCSI_ERROR; -#ifdef NEEDTOPORT - } -#endif - } else { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = CFI_BBR_SCSI_ERROR; - } - break; - } - } -} - -static void -cfi_metatask_io_done(union ctl_io *io) -{ - struct cfi_lun_io *lun_io; - struct cfi_metatask *metatask; - struct cfi_softc *softc; - struct cfi_lun *lun; - - lun_io = (struct cfi_lun_io *) - io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; - - lun = lun_io->lun; - softc = lun->softc; - - metatask = lun_io->metatask; - - switch (metatask->tasktype) { - case CFI_TASK_STARTUP: - case CFI_TASK_SHUTDOWN: { - int failed, done, is_start; - - failed = 0; - done = 0; - if (metatask->tasktype == CFI_TASK_STARTUP) - is_start = 1; - else - is_start = 0; - - mtx_lock(&softc->lock); - if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) - metatask->taskinfo.startstop.luns_complete++; - else { - metatask->taskinfo.startstop.luns_failed++; - failed = 1; - } - if ((metatask->taskinfo.startstop.luns_complete + - metatask->taskinfo.startstop.luns_failed) >= - metatask->taskinfo.startstop.total_luns) - done = 1; - - mtx_unlock(&softc->lock); - - if (failed != 0) { - printf("%s: LUN %d %s request failed\n", __func__, - lun_io->lun->lun_id, (is_start == 1) ? "start" : - "stop"); - ctl_io_error_print(io, &lun_io->lun->inq_data); - } - if (done != 0) { - if (metatask->taskinfo.startstop.luns_failed > 0) - metatask->status = CFI_MT_ERROR; - else - metatask->status = CFI_MT_SUCCESS; - cfi_metatask_done(softc, metatask); - } - mtx_lock(&softc->lock); - STAILQ_REMOVE(&lun->io_list, lun_io, cfi_lun_io, links); - mtx_unlock(&softc->lock); - - ctl_free_io(io); - break; - } - case CFI_TASK_BBRREAD: { - /* - * Translate the SCSI error into an enumeration. - */ - cfi_metatask_bbr_errorparse(metatask, io); - - mtx_lock(&softc->lock); - STAILQ_REMOVE(&lun->io_list, lun_io, cfi_lun_io, links); - mtx_unlock(&softc->lock); - - ctl_free_io(io); - - cfi_metatask_done(softc, metatask); - break; - } - default: - /* - * This shouldn't happen. - */ - mtx_lock(&softc->lock); - STAILQ_REMOVE(&lun->io_list, lun_io, cfi_lun_io, links); - mtx_unlock(&softc->lock); - - ctl_free_io(io); - break; - } -} - -static void -cfi_err_recovery_done(union ctl_io *io) -{ - struct cfi_lun_io *lun_io, *orig_lun_io; - struct cfi_lun *lun; - union ctl_io *orig_io; - - lun_io = (struct cfi_lun_io *)io->io_hdr.port_priv; - orig_lun_io = lun_io->orig_lun_io; - orig_io = orig_lun_io->ctl_io; - lun = lun_io->lun; - - if (io->io_hdr.status != CTL_SUCCESS) { - printf("%s: error recovery action failed. Original " - "error:\n", __func__); - - ctl_io_error_print(orig_lun_io->ctl_io, &lun->inq_data); - - printf("%s: error from error recovery action:\n", __func__); - - ctl_io_error_print(io, &lun->inq_data); - - printf("%s: trying original command again...\n", __func__); - } - - mtx_lock(&lun->softc->lock); - STAILQ_REMOVE(&lun->io_list, lun_io, cfi_lun_io, links); - mtx_unlock(&lun->softc->lock); - ctl_free_io(io); - - orig_io->io_hdr.retries--; - orig_io->io_hdr.status = CTL_STATUS_NONE; - - if (ctl_queue(orig_io) != CTL_RETVAL_COMPLETE) { - printf("%s: error returned from ctl_queue()!\n", __func__); - STAILQ_REMOVE(&lun->io_list, orig_lun_io, - cfi_lun_io, links); - ctl_free_io(orig_io); - } -} - -static void -cfi_lun_io_done(union ctl_io *io) -{ - struct cfi_lun *lun; - struct cfi_lun_io *lun_io; - - lun_io = (struct cfi_lun_io *) - io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; - lun = lun_io->lun; - - if (lun_io->metatask == NULL) { - printf("%s: I/O has no metatask pointer, discarding\n", - __func__); - STAILQ_REMOVE(&lun->io_list, lun_io, cfi_lun_io, links); - ctl_free_io(io); - return; - } - cfi_metatask_io_done(io); -} - -void -cfi_action(struct cfi_metatask *metatask) -{ - struct cfi_softc *softc; - - softc = &fetd_internal_softc; - - mtx_lock(&softc->lock); - - STAILQ_INSERT_TAIL(&softc->metatask_list, metatask, links); - - if ((softc->flags & CFI_ONLINE) == 0) { - mtx_unlock(&softc->lock); - metatask->status = CFI_MT_PORT_OFFLINE; - cfi_metatask_done(softc, metatask); - return; - } else - mtx_unlock(&softc->lock); - - switch (metatask->tasktype) { - case CFI_TASK_STARTUP: - case CFI_TASK_SHUTDOWN: { - union ctl_io *io; - int da_luns, ios_allocated, do_start; - struct cfi_lun *lun; - STAILQ_HEAD(, ctl_io_hdr) tmp_io_list; - - da_luns = 0; - ios_allocated = 0; - STAILQ_INIT(&tmp_io_list); - - if (metatask->tasktype == CFI_TASK_STARTUP) - do_start = 1; - else - do_start = 0; - - mtx_lock(&softc->lock); - STAILQ_FOREACH(lun, &softc->lun_list, links) { - if (lun->state != CFI_LUN_READY) - continue; - - if (SID_TYPE(&lun->inq_data) != T_DIRECT) - continue; - da_luns++; - io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); - if (io != NULL) { - ios_allocated++; - STAILQ_INSERT_TAIL(&tmp_io_list, &io->io_hdr, - links); - } - } - - if (ios_allocated < da_luns) { - printf("%s: error allocating ctl_io for %s\n", - __func__, (do_start == 1) ? "startup" : - "shutdown"); - da_luns = ios_allocated; - } - - metatask->taskinfo.startstop.total_luns = da_luns; - - STAILQ_FOREACH(lun, &softc->lun_list, links) { - struct cfi_lun_io *lun_io; - - if (lun->state != CFI_LUN_READY) - continue; - - if (SID_TYPE(&lun->inq_data) != T_DIRECT) - continue; - - io = (union ctl_io *)STAILQ_FIRST(&tmp_io_list); - if (io == NULL) - break; - - STAILQ_REMOVE(&tmp_io_list, &io->io_hdr, ctl_io_hdr, - links); - - ctl_scsi_start_stop(io, - /*start*/ do_start, - /*load_eject*/ 0, - /*immediate*/ 0, - /*power_conditions*/ - SSS_PC_START_VALID, - /*onoffline*/ 1, - /*ctl_tag_type*/ CTL_TAG_ORDERED, - /*control*/ 0); - - cfi_init_io(io, - /*lun*/ lun, - /*metatask*/ metatask, - /*policy*/ CFI_ERR_HARD, - /*retries*/ 3, - /*orig_lun_io*/ NULL, - /*done_function*/ cfi_lun_io_done); - - lun_io = (struct cfi_lun_io *) io->io_hdr.port_priv; - - STAILQ_INSERT_TAIL(&lun->io_list, lun_io, links); - - if (ctl_queue(io) != CTL_RETVAL_COMPLETE) { - printf("%s: error returned from ctl_queue()!\n", - __func__); - STAILQ_REMOVE(&lun->io_list, lun_io, - cfi_lun_io, links); - ctl_free_io(io); - metatask->taskinfo.startstop.total_luns--; - } - } - - if (STAILQ_FIRST(&tmp_io_list) != NULL) { - printf("%s: error: tmp_io_list != NULL\n", __func__); - for (io = (union ctl_io *)STAILQ_FIRST(&tmp_io_list); - io != NULL; - io = (union ctl_io *)STAILQ_FIRST(&tmp_io_list)) { - STAILQ_REMOVE(&tmp_io_list, &io->io_hdr, - ctl_io_hdr, links); - ctl_free_io(io); - } - } - mtx_unlock(&softc->lock); - - break; - } - case CFI_TASK_BBRREAD: { - union ctl_io *io; - struct cfi_lun *lun; - struct cfi_lun_io *lun_io; - cfi_bbrread_status status; - int req_lun_num; - uint32_t num_blocks; - - status = CFI_BBR_SUCCESS; - - req_lun_num = metatask->taskinfo.bbrread.lun_num; - - mtx_lock(&softc->lock); - STAILQ_FOREACH(lun, &softc->lun_list, links) { - if (lun->lun_id != req_lun_num) - continue; - if (lun->state != CFI_LUN_READY) { - status = CFI_BBR_LUN_UNCONFIG; - break; - } else - break; - } - - if (lun == NULL) - status = CFI_BBR_NO_LUN; - - if (status != CFI_BBR_SUCCESS) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = status; - mtx_unlock(&softc->lock); - cfi_metatask_done(softc, metatask); - break; - } - - /* - * Convert the number of bytes given into blocks and check - * that the number of bytes is a multiple of the blocksize. - * CTL will verify that the LBA is okay. - */ - if (lun->blocksize_powerof2 != 0) { - if ((metatask->taskinfo.bbrread.len & - (lun->blocksize - 1)) != 0) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = - CFI_BBR_BAD_LEN; - cfi_metatask_done(softc, metatask); - break; - } - - num_blocks = metatask->taskinfo.bbrread.len >> - lun->blocksize_powerof2; - } else { - /* - * XXX KDM this could result in floating point - * division, which isn't supported in the kernel on - * x86 at least. - */ - if ((metatask->taskinfo.bbrread.len % - lun->blocksize) != 0) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = - CFI_BBR_BAD_LEN; - cfi_metatask_done(softc, metatask); - break; - } - - /* - * XXX KDM this could result in floating point - * division in some cases. - */ - num_blocks = metatask->taskinfo.bbrread.len / - lun->blocksize; - - } - - io = ctl_alloc_io_nowait(softc->port.ctl_pool_ref); - if (io == NULL) { - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = CFI_BBR_NO_MEM; - mtx_unlock(&softc->lock); - cfi_metatask_done(softc, metatask); - break; - } - - /* - * XXX KDM need to do a read capacity to get the blocksize - * for this device. - */ - ctl_scsi_read_write(io, - /*data_ptr*/ NULL, - /*data_len*/ metatask->taskinfo.bbrread.len, - /*read_op*/ 1, - /*byte2*/ 0, - /*minimum_cdb_size*/ 0, - /*lba*/ metatask->taskinfo.bbrread.lba, - /*num_blocks*/ num_blocks, - /*tag_type*/ CTL_TAG_SIMPLE, - /*control*/ 0); - - cfi_init_io(io, - /*lun*/ lun, - /*metatask*/ metatask, - /*policy*/ CFI_ERR_SOFT, - /*retries*/ 3, - /*orig_lun_io*/ NULL, - /*done_function*/ cfi_lun_io_done); - - lun_io = (struct cfi_lun_io *)io->io_hdr.port_priv; - - STAILQ_INSERT_TAIL(&lun->io_list, lun_io, links); - - if (ctl_queue(io) != CTL_RETVAL_COMPLETE) { - printf("%s: error returned from ctl_queue()!\n", - __func__); - STAILQ_REMOVE(&lun->io_list, lun_io, cfi_lun_io, links); - ctl_free_io(io); - metatask->status = CFI_MT_ERROR; - metatask->taskinfo.bbrread.status = CFI_BBR_ERROR; - mtx_unlock(&softc->lock); - cfi_metatask_done(softc, metatask); - break; - } - - mtx_unlock(&softc->lock); - break; - } - default: - panic("invalid metatask type %d", metatask->tasktype); - break; /* NOTREACHED */ - } -} - -struct cfi_metatask * -cfi_alloc_metatask(int can_wait) -{ - struct cfi_metatask *metatask; - struct cfi_softc *softc; - - softc = &fetd_internal_softc; - - metatask = uma_zalloc(cfi_metatask_zone, - (can_wait ? M_WAITOK : M_NOWAIT) | M_ZERO); - if (metatask == NULL) - return (NULL); - - metatask->status = CFI_MT_NONE; - - return (metatask); -} - -void -cfi_free_metatask(struct cfi_metatask *metatask) -{ - - uma_zfree(cfi_metatask_zone, metatask); -} - -/* - * vim: ts=8 - */ |
