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path: root/sys/cam/ctl/ctl_frontend_cam_sim.c
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Diffstat (limited to 'sys/cam/ctl/ctl_frontend_cam_sim.c')
-rw-r--r--sys/cam/ctl/ctl_frontend_cam_sim.c866
1 files changed, 866 insertions, 0 deletions
diff --git a/sys/cam/ctl/ctl_frontend_cam_sim.c b/sys/cam/ctl/ctl_frontend_cam_sim.c
new file mode 100644
index 0000000000000..bfd1e60f916d6
--- /dev/null
+++ b/sys/cam/ctl/ctl_frontend_cam_sim.c
@@ -0,0 +1,866 @@
+/*-
+ * Copyright (c) 2009 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_cam_sim.c#4 $
+ */
+/*
+ * CTL frontend to CAM SIM interface. This allows access to CTL LUNs via
+ * the da(4) and pass(4) drivers from inside the system.
+ *
+ * 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/lock.h>
+#include <sys/mutex.h>
+#include <sys/condvar.h>
+#include <sys/queue.h>
+#include <sys/bus.h>
+#include <sys/sysctl.h>
+#include <machine/bus.h>
+#include <sys/sbuf.h>
+
+#include <cam/cam.h>
+#include <cam/cam_ccb.h>
+#include <cam/cam_sim.h>
+#include <cam/cam_xpt_sim.h>
+#include <cam/cam_xpt.h>
+#include <cam/cam_periph.h>
+#include <cam/scsi/scsi_all.h>
+#include <cam/scsi/scsi_message.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_mem_pool.h>
+#include <cam/ctl/ctl_debug.h>
+
+#define io_ptr spriv_ptr1
+
+struct cfcs_io {
+ union ccb *ccb;
+};
+
+struct cfcs_softc {
+ struct ctl_frontend fe;
+ char port_name[32];
+ struct cam_sim *sim;
+ struct cam_devq *devq;
+ struct cam_path *path;
+ struct mtx lock;
+ char lock_desc[32];
+ uint64_t wwnn;
+ uint64_t wwpn;
+ uint32_t cur_tag_num;
+ int online;
+};
+
+/*
+ * We can't handle CCBs with these flags. For the most part, we just don't
+ * handle physical addresses yet. That would require mapping things in
+ * order to do the copy.
+ */
+#define CFCS_BAD_CCB_FLAGS (CAM_DATA_PHYS | CAM_SG_LIST_PHYS | \
+ CAM_MSG_BUF_PHYS | CAM_SNS_BUF_PHYS | CAM_CDB_PHYS | CAM_SENSE_PTR |\
+ CAM_SENSE_PHYS)
+
+int cfcs_init(void);
+void cfcs_shutdown(void);
+static void cfcs_poll(struct cam_sim *sim);
+static void cfcs_online(void *arg);
+static void cfcs_offline(void *arg);
+static int cfcs_targ_enable(void *arg, struct ctl_id targ_id);
+static int cfcs_targ_disable(void *arg, struct ctl_id targ_id);
+static int cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id);
+static int cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id);
+static void cfcs_datamove(union ctl_io *io);
+static void cfcs_done(union ctl_io *io);
+void cfcs_action(struct cam_sim *sim, union ccb *ccb);
+static void cfcs_async(void *callback_arg, uint32_t code,
+ struct cam_path *path, void *arg);
+
+struct cfcs_softc cfcs_softc;
+/*
+ * This is primarly intended to allow for error injection to test the CAM
+ * sense data and sense residual handling code. This sets the maximum
+ * amount of SCSI sense data that we will report to CAM.
+ */
+static int cfcs_max_sense = sizeof(struct scsi_sense_data);
+
+SYSINIT(cfcs_init, SI_SUB_CONFIGURE, SI_ORDER_FOURTH, cfcs_init, NULL);
+SYSCTL_NODE(_kern_cam, OID_AUTO, ctl2cam, CTLFLAG_RD, 0,
+ "CAM Target Layer SIM frontend");
+SYSCTL_INT(_kern_cam_ctl2cam, OID_AUTO, max_sense, CTLFLAG_RW,
+ &cfcs_max_sense, 0, "Maximum sense data size");
+
+
+int
+cfcs_init(void)
+{
+ struct cfcs_softc *softc;
+ struct ccb_setasync csa;
+ struct ctl_frontend *fe;
+#ifdef NEEDTOPORT
+ char wwnn[8];
+#endif
+ int retval;
+
+ softc = &cfcs_softc;
+ retval = 0;
+ bzero(softc, sizeof(*softc));
+ sprintf(softc->lock_desc, "ctl2cam");
+ mtx_init(&softc->lock, softc->lock_desc, NULL, MTX_DEF);
+ fe = &softc->fe;
+
+ fe->port_type = CTL_PORT_INTERNAL;
+ /* XXX KDM what should the real number be here? */
+ fe->num_requested_ctl_io = 4096;
+ snprintf(softc->port_name, sizeof(softc->port_name), "ctl2cam");
+ fe->port_name = softc->port_name;
+ fe->port_online = cfcs_online;
+ fe->port_offline = cfcs_offline;
+ fe->onoff_arg = softc;
+ fe->targ_enable = cfcs_targ_enable;
+ fe->targ_disable = cfcs_targ_disable;
+ fe->lun_enable = cfcs_lun_enable;
+ fe->lun_disable = cfcs_lun_disable;
+ fe->targ_lun_arg = softc;
+ fe->fe_datamove = cfcs_datamove;
+ fe->fe_done = cfcs_done;
+
+ /* XXX KDM what should we report here? */
+ /* XXX These should probably be fetched from CTL. */
+ fe->max_targets = 1;
+ fe->max_target_id = 15;
+
+ retval = ctl_frontend_register(fe, /*master_SC*/ 1);
+ if (retval != 0) {
+ printf("%s: ctl_frontend_register() failed with error %d!\n",
+ __func__, retval);
+ retval = 1;
+ goto bailout;
+ }
+
+ /*
+ * Get the WWNN out of the database, and create a WWPN as well.
+ */
+#ifdef NEEDTOPORT
+ ddb_GetWWNN((char *)wwnn);
+ softc->wwnn = be64dec(wwnn);
+ softc->wwpn = softc->wwnn + (softc->fe.targ_port & 0xff);
+#endif
+
+ /*
+ * If the CTL frontend didn't tell us what our WWNN/WWPN is, go
+ * ahead and set something random.
+ */
+ if (fe->wwnn == 0) {
+ uint64_t random_bits;
+
+ arc4rand(&random_bits, sizeof(random_bits), 0);
+ softc->wwnn = (random_bits & 0x0000000fffffff00ULL) |
+ /* Company ID */ 0x5000000000000000ULL |
+ /* NL-Port */ 0x0300;
+ softc->wwpn = softc->wwnn + fe->targ_port + 1;
+ fe->wwnn = softc->wwnn;
+ fe->wwpn = softc->wwpn;
+ } else {
+ softc->wwnn = fe->wwnn;
+ softc->wwpn = fe->wwpn;
+ }
+
+
+ softc->devq = cam_simq_alloc(fe->num_requested_ctl_io);
+ if (softc->devq == NULL) {
+ printf("%s: error allocating devq\n", __func__);
+ retval = ENOMEM;
+ goto bailout;
+ }
+
+ softc->sim = cam_sim_alloc(cfcs_action, cfcs_poll, softc->port_name,
+ softc, /*unit*/ 0, &softc->lock, 1,
+ fe->num_requested_ctl_io, softc->devq);
+ if (softc->sim == NULL) {
+ printf("%s: error allocating SIM\n", __func__);
+ retval = ENOMEM;
+ goto bailout;
+ }
+
+ mtx_lock(&softc->lock);
+ if (xpt_bus_register(softc->sim, NULL, 0) != CAM_SUCCESS) {
+ printf("%s: error registering SIM\n", __func__);
+ retval = ENOMEM;
+ goto bailout;
+ }
+
+ if (xpt_create_path(&softc->path, /*periph*/NULL,
+ cam_sim_path(softc->sim),
+ CAM_TARGET_WILDCARD,
+ CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
+ printf("%s: error creating path\n", __func__);
+ xpt_bus_deregister(cam_sim_path(softc->sim));
+ retval = 1;
+ goto bailout;
+ }
+
+ mtx_unlock(&softc->lock);
+
+ xpt_setup_ccb(&csa.ccb_h, softc->path, /*priority*/ 5);
+ csa.ccb_h.func_code = XPT_SASYNC_CB;
+ csa.event_enable = AC_LOST_DEVICE;
+ csa.callback = cfcs_async;
+ csa.callback_arg = softc->sim;
+ xpt_action((union ccb *)&csa);
+
+ return (retval);
+
+bailout:
+ if (softc->sim)
+ cam_sim_free(softc->sim, /*free_devq*/ TRUE);
+ else if (softc->devq)
+ cam_simq_free(softc->devq);
+
+ mtx_unlock(&softc->lock);
+
+ return (retval);
+}
+
+static void
+cfcs_poll(struct cam_sim *sim)
+{
+
+}
+
+void
+cfcs_shutdown(void)
+{
+
+}
+
+static void
+cfcs_online(void *arg)
+{
+ struct cfcs_softc *softc;
+ union ccb *ccb;
+
+ softc = (struct cfcs_softc *)arg;
+
+ mtx_lock(&softc->lock);
+ softc->online = 1;
+ mtx_unlock(&softc->lock);
+
+ ccb = xpt_alloc_ccb_nowait();
+ if (ccb == NULL) {
+ printf("%s: unable to allocate CCB for rescan\n", __func__);
+ return;
+ }
+
+ if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
+ cam_sim_path(softc->sim), CAM_TARGET_WILDCARD,
+ CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
+ printf("%s: can't allocate path for rescan\n", __func__);
+ xpt_free_ccb(ccb);
+ return;
+ }
+ xpt_rescan(ccb);
+}
+
+static void
+cfcs_offline(void *arg)
+{
+ struct cfcs_softc *softc;
+ union ccb *ccb;
+
+ softc = (struct cfcs_softc *)arg;
+
+ mtx_lock(&softc->lock);
+ softc->online = 0;
+ mtx_unlock(&softc->lock);
+
+ ccb = xpt_alloc_ccb_nowait();
+ if (ccb == NULL) {
+ printf("%s: unable to allocate CCB for rescan\n", __func__);
+ return;
+ }
+
+ if (xpt_create_path(&ccb->ccb_h.path, xpt_periph,
+ cam_sim_path(softc->sim), CAM_TARGET_WILDCARD,
+ CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
+ printf("%s: can't allocate path for rescan\n", __func__);
+ xpt_free_ccb(ccb);
+ return;
+ }
+ xpt_rescan(ccb);
+}
+
+static int
+cfcs_targ_enable(void *arg, struct ctl_id targ_id)
+{
+ return (0);
+}
+
+static int
+cfcs_targ_disable(void *arg, struct ctl_id targ_id)
+{
+ return (0);
+}
+
+static int
+cfcs_lun_enable(void *arg, struct ctl_id target_id, int lun_id)
+{
+ return (0);
+}
+static int
+cfcs_lun_disable(void *arg, struct ctl_id target_id, int lun_id)
+{
+ return (0);
+}
+
+/*
+ * This function is very similar to ctl_ioctl_do_datamove(). Is there a
+ * way to combine the functionality?
+ *
+ * XXX KDM may need to move this into a thread. We're doing a bcopy in the
+ * caller's context, which will usually be the backend. That may not be a
+ * good thing.
+ */
+static void
+cfcs_datamove(union ctl_io *io)
+{
+ union ccb *ccb;
+ bus_dma_segment_t cam_sg_entry, *cam_sglist;
+ struct ctl_sg_entry ctl_sg_entry, *ctl_sglist;
+ int cam_sg_count, ctl_sg_count, cam_sg_start;
+ int cam_sg_offset;
+ int len_to_copy, len_copied;
+ int ctl_watermark, cam_watermark;
+ int i, j;
+
+
+ cam_sg_offset = 0;
+ cam_sg_start = 0;
+
+ ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
+
+ /*
+ * Note that we have a check in cfcs_action() to make sure that any
+ * CCBs with "bad" flags are returned with CAM_REQ_INVALID. This
+ * is just to make sure no one removes that check without updating
+ * this code to provide the additional functionality necessary to
+ * support those modes of operation.
+ */
+ KASSERT(((ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) == 0), ("invalid "
+ "CAM flags %#x", (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS)));
+
+ /*
+ * Simplify things on both sides by putting single buffers into a
+ * single entry S/G list.
+ */
+ if (ccb->ccb_h.flags & CAM_SCATTER_VALID) {
+ if (ccb->ccb_h.flags & CAM_SG_LIST_PHYS) {
+ /* We should filter this out on entry */
+ panic("%s: physical S/G list, should not get here",
+ __func__);
+ } else {
+ int len_seen;
+
+ cam_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr;
+ cam_sg_count = ccb->csio.sglist_cnt;
+
+ for (i = 0, len_seen = 0; i < cam_sg_count; i++) {
+ if ((len_seen + cam_sglist[i].ds_len) >=
+ io->scsiio.kern_rel_offset) {
+ cam_sg_start = i;
+ cam_sg_offset =
+ io->scsiio.kern_rel_offset -
+ len_seen;
+ break;
+ }
+ len_seen += cam_sglist[i].ds_len;
+ }
+ }
+ } else {
+ cam_sglist = &cam_sg_entry;
+ cam_sglist[0].ds_len = ccb->csio.dxfer_len;
+ cam_sglist[0].ds_addr = (bus_addr_t)ccb->csio.data_ptr;
+ cam_sg_count = 1;
+ cam_sg_start = 0;
+ cam_sg_offset = io->scsiio.kern_rel_offset;
+ }
+
+ if (io->scsiio.kern_sg_entries > 0) {
+ ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr;
+ ctl_sg_count = io->scsiio.kern_sg_entries;
+ } else {
+ ctl_sglist = &ctl_sg_entry;
+ ctl_sglist->addr = io->scsiio.kern_data_ptr;
+ ctl_sglist->len = io->scsiio.kern_data_len;
+ ctl_sg_count = 1;
+ }
+
+ ctl_watermark = 0;
+ cam_watermark = cam_sg_offset;
+ len_copied = 0;
+ for (i = cam_sg_start, j = 0;
+ i < cam_sg_count && j < ctl_sg_count;) {
+ uint8_t *cam_ptr, *ctl_ptr;
+
+ len_to_copy = ctl_min(cam_sglist[i].ds_len - cam_watermark,
+ ctl_sglist[j].len - ctl_watermark);
+
+ cam_ptr = (uint8_t *)cam_sglist[i].ds_addr;
+ cam_ptr = cam_ptr + cam_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
+ ctl_ptr = (uint8_t *)ctl_sglist[j].addr;
+ ctl_ptr = ctl_ptr + ctl_watermark;
+
+ ctl_watermark += len_to_copy;
+ cam_watermark += len_to_copy;
+
+ if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) ==
+ CTL_FLAG_DATA_IN) {
+ CTL_DEBUG_PRINT(("%s: copying %d bytes to CAM\n",
+ __func__, len_to_copy));
+ CTL_DEBUG_PRINT(("%s: from %p to %p\n", ctl_ptr,
+ __func__, cam_ptr));
+ bcopy(ctl_ptr, cam_ptr, len_to_copy);
+ } else {
+ CTL_DEBUG_PRINT(("%s: copying %d bytes from CAM\n",
+ __func__, len_to_copy));
+ CTL_DEBUG_PRINT(("%s: from %p to %p\n", cam_ptr,
+ __func__, ctl_ptr));
+ bcopy(cam_ptr, ctl_ptr, len_to_copy);
+ }
+
+ len_copied += len_to_copy;
+
+ if (cam_sglist[i].ds_len == cam_watermark) {
+ i++;
+ cam_watermark = 0;
+ }
+
+ if (ctl_sglist[j].len == ctl_watermark) {
+ j++;
+ ctl_watermark = 0;
+ }
+ }
+
+ io->scsiio.ext_data_filled += len_copied;
+
+ io->scsiio.be_move_done(io);
+}
+
+static void
+cfcs_done(union ctl_io *io)
+{
+ union ccb *ccb;
+ struct cfcs_softc *softc;
+ struct cam_sim *sim;
+
+ ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
+
+ sim = xpt_path_sim(ccb->ccb_h.path);
+ softc = (struct cfcs_softc *)cam_sim_softc(sim);
+
+ /*
+ * At this point we should have status. If we don't, that's a bug.
+ */
+ KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE),
+ ("invalid CTL status %#x", io->io_hdr.status));
+
+ /*
+ * Translate CTL status to CAM status.
+ */
+ switch (io->io_hdr.status & CTL_STATUS_MASK) {
+ case CTL_SUCCESS:
+ ccb->ccb_h.status = CAM_REQ_CMP;
+ break;
+ case CTL_SCSI_ERROR:
+ ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
+ ccb->csio.scsi_status = io->scsiio.scsi_status;
+ bcopy(&io->scsiio.sense_data, &ccb->csio.sense_data,
+ min(io->scsiio.sense_len, ccb->csio.sense_len));
+ if (ccb->csio.sense_len > io->scsiio.sense_len)
+ ccb->csio.sense_resid = ccb->csio.sense_len -
+ io->scsiio.sense_len;
+ else
+ ccb->csio.sense_resid = 0;
+ if ((ccb->csio.sense_len - ccb->csio.sense_resid) >
+ cfcs_max_sense) {
+ ccb->csio.sense_resid = ccb->csio.sense_len -
+ cfcs_max_sense;
+ }
+ break;
+ case CTL_CMD_ABORTED:
+ ccb->ccb_h.status = CAM_REQ_ABORTED;
+ break;
+ case CTL_ERROR:
+ default:
+ ccb->ccb_h.status = CAM_REQ_CMP_ERR;
+ break;
+ }
+
+ mtx_lock(sim->mtx);
+ xpt_done(ccb);
+ mtx_unlock(sim->mtx);
+
+ ctl_free_io(io);
+}
+
+void
+cfcs_action(struct cam_sim *sim, union ccb *ccb)
+{
+ struct cfcs_softc *softc;
+ int err;
+
+ softc = (struct cfcs_softc *)cam_sim_softc(sim);
+ mtx_assert(&softc->lock, MA_OWNED);
+
+ switch (ccb->ccb_h.func_code) {
+ case XPT_SCSI_IO: {
+ union ctl_io *io;
+ struct ccb_scsiio *csio;
+
+ csio = &ccb->csio;
+
+ /*
+ * Catch CCB flags, like physical address flags, that
+ * indicate situations we currently can't handle.
+ */
+ if (ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS) {
+ ccb->ccb_h.status = CAM_REQ_INVALID;
+ printf("%s: bad CCB flags %#x (all flags %#x)\n",
+ __func__, ccb->ccb_h.flags & CFCS_BAD_CCB_FLAGS,
+ ccb->ccb_h.flags);
+ xpt_done(ccb);
+ return;
+ }
+
+ /*
+ * If we aren't online, there are no devices to see.
+ */
+ if (softc->online == 0) {
+ ccb->ccb_h.status = CAM_DEV_NOT_THERE;
+ xpt_done(ccb);
+ return;
+ }
+
+ io = ctl_alloc_io(softc->fe.ctl_pool_ref);
+ if (io == NULL) {
+ printf("%s: can't allocate ctl_io\n", __func__);
+ ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
+ xpt_freeze_devq(ccb->ccb_h.path, 1);
+ xpt_done(ccb);
+ return;
+ }
+ ctl_zero_io(io);
+ /* Save pointers on both sides */
+ io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb;
+ ccb->ccb_h.io_ptr = io;
+
+ /*
+ * Only SCSI I/O comes down this path, resets, etc. come
+ * down via the XPT_RESET_BUS/LUN CCBs below.
+ */
+ io->io_hdr.io_type = CTL_IO_SCSI;
+ io->io_hdr.nexus.initid.id = 1;
+ io->io_hdr.nexus.targ_port = softc->fe.targ_port;
+ /*
+ * XXX KDM how do we handle target IDs?
+ */
+ io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id;
+ io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun;
+ /*
+ * This tag scheme isn't the best, since we could in theory
+ * have a very long-lived I/O and tag collision, especially
+ * in a high I/O environment. But it should work well
+ * enough for now. Since we're using unsigned ints,
+ * they'll just wrap around.
+ */
+ io->scsiio.tag_num = softc->cur_tag_num++;
+ csio->tag_id = io->scsiio.tag_num;
+ switch (csio->tag_action) {
+ case CAM_TAG_ACTION_NONE:
+ io->scsiio.tag_type = CTL_TAG_UNTAGGED;
+ break;
+ case MSG_SIMPLE_TASK:
+ io->scsiio.tag_type = CTL_TAG_SIMPLE;
+ break;
+ case MSG_HEAD_OF_QUEUE_TASK:
+ io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
+ break;
+ case MSG_ORDERED_TASK:
+ io->scsiio.tag_type = CTL_TAG_ORDERED;
+ break;
+ case MSG_ACA_TASK:
+ io->scsiio.tag_type = CTL_TAG_ACA;
+ break;
+ default:
+ io->scsiio.tag_type = CTL_TAG_UNTAGGED;
+ printf("%s: unhandled tag type %#x!!\n", __func__,
+ csio->tag_action);
+ break;
+ }
+ if (csio->cdb_len > sizeof(io->scsiio.cdb)) {
+ printf("%s: WARNING: CDB len %d > ctl_io space %zd\n",
+ __func__, csio->cdb_len, sizeof(io->scsiio.cdb));
+ }
+ io->scsiio.cdb_len = min(csio->cdb_len, sizeof(io->scsiio.cdb));
+ bcopy(csio->cdb_io.cdb_bytes, io->scsiio.cdb,
+ io->scsiio.cdb_len);
+
+ err = ctl_queue(io);
+ if (err != CTL_RETVAL_COMPLETE) {
+ printf("%s: func %d: error %d returned by "
+ "ctl_queue()!\n", __func__,
+ ccb->ccb_h.func_code, err);
+ ctl_free_io(io);
+ } else {
+ ccb->ccb_h.status |= CAM_SIM_QUEUED;
+ }
+ break;
+ }
+ case XPT_ABORT: {
+ union ctl_io *io;
+ union ccb *abort_ccb;
+
+ abort_ccb = ccb->cab.abort_ccb;
+
+ if (abort_ccb->ccb_h.func_code != XPT_SCSI_IO) {
+ ccb->ccb_h.status = CAM_REQ_INVALID;
+ xpt_done(ccb);
+ }
+
+ /*
+ * If we aren't online, there are no devices to talk to.
+ */
+ if (softc->online == 0) {
+ ccb->ccb_h.status = CAM_DEV_NOT_THERE;
+ xpt_done(ccb);
+ return;
+ }
+
+ io = ctl_alloc_io(softc->fe.ctl_pool_ref);
+ if (io == NULL) {
+ ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
+ xpt_freeze_devq(ccb->ccb_h.path, 1);
+ xpt_done(ccb);
+ return;
+ }
+
+ ctl_zero_io(io);
+ /* Save pointers on both sides */
+ io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb;
+ ccb->ccb_h.io_ptr = io;
+
+ io->io_hdr.io_type = CTL_IO_TASK;
+ io->io_hdr.nexus.initid.id = 1;
+ io->io_hdr.nexus.targ_port = softc->fe.targ_port;
+ io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id;
+ io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun;
+ io->taskio.task_action = CTL_TASK_ABORT_TASK;
+ io->taskio.tag_num = abort_ccb->csio.tag_id;
+ switch (abort_ccb->csio.tag_action) {
+ case CAM_TAG_ACTION_NONE:
+ io->taskio.tag_type = CTL_TAG_UNTAGGED;
+ break;
+ case MSG_SIMPLE_TASK:
+ io->taskio.tag_type = CTL_TAG_SIMPLE;
+ break;
+ case MSG_HEAD_OF_QUEUE_TASK:
+ io->taskio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
+ break;
+ case MSG_ORDERED_TASK:
+ io->taskio.tag_type = CTL_TAG_ORDERED;
+ break;
+ case MSG_ACA_TASK:
+ io->taskio.tag_type = CTL_TAG_ACA;
+ break;
+ default:
+ io->taskio.tag_type = CTL_TAG_UNTAGGED;
+ printf("%s: unhandled tag type %#x!!\n", __func__,
+ abort_ccb->csio.tag_action);
+ break;
+ }
+ err = ctl_queue(io);
+ if (err != CTL_RETVAL_COMPLETE) {
+ printf("%s func %d: error %d returned by "
+ "ctl_queue()!\n", __func__,
+ ccb->ccb_h.func_code, err);
+ ctl_free_io(io);
+ }
+ break;
+ }
+ case XPT_GET_TRAN_SETTINGS: {
+ struct ccb_trans_settings *cts;
+ struct ccb_trans_settings_scsi *scsi;
+ struct ccb_trans_settings_fc *fc;
+
+ cts = &ccb->cts;
+ scsi = &cts->proto_specific.scsi;
+ fc = &cts->xport_specific.fc;
+
+
+ cts->protocol = PROTO_SCSI;
+ cts->protocol_version = SCSI_REV_SPC2;
+ cts->transport = XPORT_FC;
+ cts->transport_version = 0;
+
+ scsi->valid = CTS_SCSI_VALID_TQ;
+ scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
+ fc->valid = CTS_FC_VALID_SPEED;
+ fc->bitrate = 800000;
+ fc->wwnn = softc->wwnn;
+ fc->wwpn = softc->wwpn;
+ fc->port = softc->fe.targ_port;
+ fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN |
+ CTS_FC_VALID_PORT;
+ ccb->ccb_h.status = CAM_REQ_CMP;
+ break;
+ }
+ case XPT_SET_TRAN_SETTINGS:
+ /* XXX KDM should we actually do something here? */
+ ccb->ccb_h.status = CAM_REQ_CMP;
+ break;
+ case XPT_RESET_BUS:
+ case XPT_RESET_DEV: {
+ union ctl_io *io;
+
+ /*
+ * If we aren't online, there are no devices to talk to.
+ */
+ if (softc->online == 0) {
+ ccb->ccb_h.status = CAM_DEV_NOT_THERE;
+ xpt_done(ccb);
+ return;
+ }
+
+ io = ctl_alloc_io(softc->fe.ctl_pool_ref);
+ if (io == NULL) {
+ ccb->ccb_h.status = CAM_BUSY | CAM_DEV_QFRZN;
+ xpt_freeze_devq(ccb->ccb_h.path, 1);
+ xpt_done(ccb);
+ return;
+ }
+
+ ctl_zero_io(io);
+ /* Save pointers on both sides */
+ io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ccb;
+ ccb->ccb_h.io_ptr = io;
+
+ io->io_hdr.io_type = CTL_IO_TASK;
+ io->io_hdr.nexus.initid.id = 0;
+ io->io_hdr.nexus.targ_port = softc->fe.targ_port;
+ io->io_hdr.nexus.targ_target.id = ccb->ccb_h.target_id;
+ io->io_hdr.nexus.targ_lun = ccb->ccb_h.target_lun;
+ if (ccb->ccb_h.func_code == XPT_RESET_BUS)
+ io->taskio.task_action = CTL_TASK_BUS_RESET;
+ else
+ io->taskio.task_action = CTL_TASK_LUN_RESET;
+
+ err = ctl_queue(io);
+ if (err != CTL_RETVAL_COMPLETE) {
+ printf("%s func %d: error %d returned by "
+ "ctl_queue()!\n", __func__,
+ ccb->ccb_h.func_code, err);
+ ctl_free_io(io);
+ }
+ break;
+ }
+ case XPT_CALC_GEOMETRY:
+ cam_calc_geometry(&ccb->ccg, 1);
+ xpt_done(ccb);
+ break;
+ case XPT_PATH_INQ: {
+ struct ccb_pathinq *cpi;
+
+ cpi = &ccb->cpi;
+
+ cpi->version_num = 0;
+ cpi->hba_inquiry = PI_TAG_ABLE;
+ cpi->target_sprt = 0;
+ cpi->hba_misc = 0;
+ cpi->hba_eng_cnt = 0;
+ cpi->max_target = 1;
+ cpi->max_lun = 1024;
+ /* Do we really have a limit? */
+ cpi->maxio = 1024 * 1024;
+ cpi->async_flags = 0;
+ cpi->hpath_id = 0;
+ cpi->initiator_id = 0;
+
+ strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
+ strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN);
+ strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
+ cpi->unit_number = 0;
+ cpi->bus_id = 0;
+ cpi->base_transfer_speed = 800000;
+ cpi->protocol = PROTO_SCSI;
+ cpi->protocol_version = SCSI_REV_SPC2;
+ /*
+ * Pretend to be Fibre Channel.
+ */
+ cpi->transport = XPORT_FC;
+ cpi->transport_version = 0;
+ cpi->xport_specific.fc.wwnn = softc->wwnn;
+ cpi->xport_specific.fc.wwpn = softc->wwpn;
+ cpi->xport_specific.fc.port = softc->fe.targ_port;
+ cpi->xport_specific.fc.bitrate = 8 * 1000 * 1000;
+ cpi->ccb_h.status = CAM_REQ_CMP;
+ break;
+ }
+ default:
+ ccb->ccb_h.status = CAM_PROVIDE_FAIL;
+ printf("%s: unsupported CCB type %#x\n", __func__,
+ ccb->ccb_h.func_code);
+ xpt_done(ccb);
+ break;
+ }
+}
+
+static void
+cfcs_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
+{
+
+}