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-rw-r--r--share/man/man4/Makefile1
-rw-r--r--share/man/man4/ctl.490
-rw-r--r--sys/cam/ctl/README.ctl.txt3
-rw-r--r--sys/cam/ctl/ctl.c56
-rw-r--r--sys/cam/ctl/ctl_frontend_cam_sim.c31
-rw-r--r--sys/cam/ctl/ctl_frontend_internal.c37
-rw-r--r--sys/cam/ctl/scsi_ctl.c36
-rw-r--r--sys/modules/Makefile1
-rw-r--r--sys/modules/ctl/Makefile26
-rw-r--r--usr.bin/ctlstat/ctlstat.83
-rw-r--r--usr.sbin/ctladm/ctladm.83
11 files changed, 255 insertions, 32 deletions
diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index bd67533..ec14e54 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -99,6 +99,7 @@ MAN= aac.4 \
${_cpuctl.4} \
cpufreq.4 \
crypto.4 \
+ ctl.4 \
cue.4 \
cxgb.4 \
cxgbe.4 \
diff --git a/share/man/man4/ctl.4 b/share/man/man4/ctl.4
new file mode 100644
index 0000000..1bbbe8f
--- /dev/null
+++ b/share/man/man4/ctl.4
@@ -0,0 +1,90 @@
+.\" Copyright (c) 2013 Edward Tomasz Napierala
+.\" 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.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
+.\"
+.\" $FreeBSD$
+.Dd March 8, 2013
+.Dt CTL 4
+.Os
+.Sh NAME
+.Nm ctl
+.Nd CAM Target Layer
+.Sh SYNOPSIS
+To compile this driver into the kernel,
+place the following line in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device ctl"
+.Ed
+.Pp
+Alternatively, to load the driver as a
+module at boot time, place the following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+ctl_load="YES"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+subsystem provides SCSI disk and processor emulation.
+It supports features such as:
+.Pp
+.Bl -bullet -compact
+.It
+Disk and processor device emulation
+.It
+Tagged queueing
+.It
+SCSI task attribute support (ordered, head of queue, simple tags)
+.It
+SCSI implicit command ordering support.
+.It
+Full task management support (abort, LUN reset, target reset, etc.)
+.It
+Support for multiple ports
+.It
+Support for multiple simultaneous initiators
+.It
+Support for multiple simultaneous backing stores
+.It
+Persistent reservation support
+.It
+Mode sense/select support
+.It
+Error injection support
+.It
+All I/O handled in-kernel, no userland context switch overhead
+.El
+.Sh SEE ALSO
+.Xr ctladm 8 ,
+.Xr ctlstat 8
+.Sh HISTORY
+The
+.Nm
+subsystem first appeared in
+.Fx 9.1 .
+.Sh AUTHORS
+The
+.Nm
+subsystem was written by
+.An Kenneth Merry Aq ken@FreeBSD.org .
diff --git a/sys/cam/ctl/README.ctl.txt b/sys/cam/ctl/README.ctl.txt
index 4ccbadf..1325cc8 100644
--- a/sys/cam/ctl/README.ctl.txt
+++ b/sys/cam/ctl/README.ctl.txt
@@ -227,9 +227,6 @@ Revision 1.2 Changes
To Do List:
==========
- - Make CTL buildable as a module. Work needs to be done on initialization,
- and on freeing resources and LUNs when it is built as a module.
-
- Use devstat(9) for CTL's statistics collection. CTL uses a home-grown
statistics collection system that is similar to devstat(9). ctlstat
should be retired in favor of iostat, etc., once aggregation modes are
diff --git a/sys/cam/ctl/ctl.c b/sys/cam/ctl/ctl.c
index 1884c7b..aa218b4 100644
--- a/sys/cam/ctl/ctl.c
+++ b/sys/cam/ctl/ctl.c
@@ -52,6 +52,7 @@ __FBSDID("$FreeBSD$");
#include <sys/bio.h>
#include <sys/fcntl.h>
#include <sys/lock.h>
+#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/malloc.h>
@@ -338,7 +339,7 @@ TUNABLE_INT("kern.cam.ctl.disable", &ctl_disable);
static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event,
int param);
static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest);
-static void ctl_init(void);
+static int ctl_init(void);
void ctl_shutdown(void);
static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td);
static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td);
@@ -458,11 +459,16 @@ static struct cdevsw ctl_cdevsw = {
MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL");
-/*
- * If we have the CAM SIM, we may or may not have another SIM that will
- * cause CTL to get initialized. If not, we need to initialize it.
- */
-SYSINIT(ctl_init, SI_SUB_CONFIGURE, SI_ORDER_THIRD, ctl_init, NULL);
+static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *);
+
+static moduledata_t ctl_moduledata = {
+ "ctl",
+ ctl_module_event_handler,
+ NULL
+};
+
+DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD);
+MODULE_VERSION(ctl, 1);
static void
ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc,
@@ -942,7 +948,7 @@ ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest)
dest->io_hdr.status = src->hdr.status;
}
-static void
+static int
ctl_init(void)
{
struct ctl_softc *softc;
@@ -953,7 +959,7 @@ ctl_init(void)
#if 0
int i;
#endif
- int retval;
+ int error, retval;
//int isc_retval;
retval = 0;
@@ -962,7 +968,7 @@ ctl_init(void)
/* If we're disabled, don't initialize. */
if (ctl_disable != 0)
- return;
+ return (0);
control_softc = malloc(sizeof(*control_softc), M_DEVBUF,
M_WAITOK | M_ZERO);
@@ -991,7 +997,7 @@ ctl_init(void)
destroy_dev(softc->dev);
free(control_softc, M_DEVBUF);
control_softc = NULL;
- return;
+ return (ENOMEM);
}
SYSCTL_ADD_INT(&softc->sysctl_ctx,
@@ -1053,7 +1059,7 @@ ctl_init(void)
&internal_pool)!= 0){
printf("ctl: can't allocate %d entry internal pool, "
"exiting\n", CTL_POOL_ENTRIES_INTERNAL);
- return;
+ return (ENOMEM);
}
if (ctl_pool_create(softc, CTL_POOL_EMERGENCY,
@@ -1061,7 +1067,7 @@ ctl_init(void)
printf("ctl: can't allocate %d entry emergency pool, "
"exiting\n", CTL_POOL_ENTRIES_EMERGENCY);
ctl_pool_free(softc, internal_pool);
- return;
+ return (ENOMEM);
}
if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC,
@@ -1071,7 +1077,7 @@ ctl_init(void)
"exiting\n", CTL_POOL_ENTRIES_OTHER_SC);
ctl_pool_free(softc, internal_pool);
ctl_pool_free(softc, emergency_pool);
- return;
+ return (ENOMEM);
}
softc->internal_pool = internal_pool;
@@ -1092,14 +1098,15 @@ ctl_init(void)
mtx_unlock(&softc->ctl_lock);
#endif
- if (kproc_create(ctl_work_thread, softc, &softc->work_thread, 0, 0,
- "ctl_thrd") != 0) {
+ error = kproc_create(ctl_work_thread, softc, &softc->work_thread, 0, 0,
+ "ctl_thrd");
+ if (error != 0) {
printf("error creating CTL work thread!\n");
ctl_free_lun(lun);
ctl_pool_free(softc, internal_pool);
ctl_pool_free(softc, emergency_pool);
ctl_pool_free(softc, other_pool);
- return;
+ return (error);
}
printf("ctl: CAM Target Layer loaded\n");
@@ -1139,10 +1146,11 @@ ctl_init(void)
if (sizeof(struct callout) > CTL_TIMER_BYTES) {
printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n",
sizeof(struct callout), CTL_TIMER_BYTES);
- return;
+ return (EINVAL);
}
#endif /* CTL_IO_DELAY */
+ return (0);
}
void
@@ -1199,6 +1207,20 @@ ctl_shutdown(void)
printf("ctl: CAM Target Layer unloaded\n");
}
+static int
+ctl_module_event_handler(module_t mod, int what, void *arg)
+{
+
+ switch (what) {
+ case MOD_LOAD:
+ return (ctl_init());
+ case MOD_UNLOAD:
+ return (EBUSY);
+ default:
+ return (EOPNOTSUPP);
+ }
+}
+
/*
* XXX KDM should we do some access checks here? Bump a reference count to
* prevent a CTL module from being unloaded while someone has it open?
diff --git a/sys/cam/ctl/ctl_frontend_cam_sim.c b/sys/cam/ctl/ctl_frontend_cam_sim.c
index b885cbf..9548332 100644
--- a/sys/cam/ctl/ctl_frontend_cam_sim.c
+++ b/sys/cam/ctl/ctl_frontend_cam_sim.c
@@ -121,12 +121,23 @@ struct cfcs_softc cfcs_softc;
static int cfcs_max_sense = sizeof(struct scsi_sense_data);
extern int ctl_disable;
-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");
+static int cfcs_module_event_handler(module_t, int /*modeventtype_t*/, void *);
+
+static moduledata_t cfcs_moduledata = {
+ "ctlcfcs",
+ cfcs_module_event_handler,
+ NULL
+};
+
+DECLARE_MODULE(ctlcfcs, cfcs_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH);
+MODULE_VERSION(ctlcfcs, 1);
+MODULE_DEPEND(ctlcfi, ctl, 1, 1, 1);
+MODULE_DEPEND(ctlcfi, cam, 1, 1, 1);
int
cfcs_init(void)
@@ -176,7 +187,7 @@ cfcs_init(void)
printf("%s: ctl_frontend_register() failed with error %d!\n",
__func__, retval);
mtx_destroy(&softc->lock);
- return (1);
+ return (retval);
}
/*
@@ -236,7 +247,7 @@ cfcs_init(void)
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
printf("%s: error creating path\n", __func__);
xpt_bus_deregister(cam_sim_path(softc->sim));
- retval = 1;
+ retval = EINVAL;
goto bailout;
}
@@ -274,6 +285,20 @@ cfcs_shutdown(void)
}
+static int
+cfcs_module_event_handler(module_t mod, int what, void *arg)
+{
+
+ switch (what) {
+ case MOD_LOAD:
+ return (cfcs_init());
+ case MOD_UNLOAD:
+ return (EBUSY);
+ default:
+ return (EOPNOTSUPP);
+ }
+}
+
static void
cfcs_onoffline(void *arg, int online)
{
diff --git a/sys/cam/ctl/ctl_frontend_internal.c b/sys/cam/ctl/ctl_frontend_internal.c
index 46f9f33..9b25a70 100644
--- a/sys/cam/ctl/ctl_frontend_internal.c
+++ b/sys/cam/ctl/ctl_frontend_internal.c
@@ -55,6 +55,7 @@ __FBSDID("$FreeBSD$");
#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>
@@ -189,7 +190,7 @@ MALLOC_DEFINE(M_CTL_CFI, "ctlcfi", "CTL CFI");
static struct cfi_softc fetd_internal_softc;
extern int ctl_disable;
-void cfi_init(void);
+int cfi_init(void);
void cfi_shutdown(void) __unused;
static void cfi_online(void *arg);
static void cfi_offline(void *arg);
@@ -217,9 +218,19 @@ 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);
-SYSINIT(cfi_init, SI_SUB_CONFIGURE, SI_ORDER_FOURTH, cfi_init, NULL);
+static int cfi_module_event_handler(module_t, int /*modeventtype_t*/, void *);
-void
+static moduledata_t cfi_moduledata = {
+ "ctlcfi",
+ cfi_module_event_handler,
+ NULL
+};
+
+DECLARE_MODULE(ctlcfi, cfi_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH);
+MODULE_VERSION(ctlcfi, 1);
+MODULE_DEPEND(ctlcfi, ctl, 1, 1, 1);
+
+int
cfi_init(void)
{
struct cfi_softc *softc;
@@ -234,7 +245,7 @@ cfi_init(void)
/* If we're disabled, don't initialize */
if (ctl_disable != 0)
- return;
+ return (0);
if (sizeof(struct cfi_lun_io) > CTL_PORT_PRIV_SIZE) {
printf("%s: size of struct cfi_lun_io %zd > "
@@ -292,7 +303,7 @@ cfi_init(void)
}
bailout:
- return;
+ return (0);
bailout_error:
@@ -309,6 +320,8 @@ bailout_error:
default:
break;
}
+
+ return (ENOMEM);
}
void
@@ -331,6 +344,20 @@ cfi_shutdown(void)
printf("%s: error shrinking LUN pool\n", __func__);
}
+static int
+cfi_module_event_handler(module_t mod, int what, void *arg)
+{
+
+ switch (what) {
+ case MOD_LOAD:
+ return (cfi_init());
+ case MOD_UNLOAD:
+ return (EBUSY);
+ default:
+ return (EOPNOTSUPP);
+ }
+}
+
static void
cfi_online(void *arg)
{
diff --git a/sys/cam/ctl/scsi_ctl.c b/sys/cam/ctl/scsi_ctl.c
index e9af881..568bd24 100644
--- a/sys/cam/ctl/scsi_ctl.c
+++ b/sys/cam/ctl/scsi_ctl.c
@@ -225,11 +225,28 @@ static struct periph_driver ctlfe_driver =
ctlfeinit, "ctl",
TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0
};
-PERIPHDRIVER_DECLARE(ctl, ctlfe_driver);
+
+static int ctlfe_module_event_handler(module_t, int /*modeventtype_t*/, void *);
+
+/*
+ * We're not using PERIPHDRIVER_DECLARE(), because it runs at SI_SUB_DRIVERS,
+ * and that happens before CTL gets initialised.
+ */
+static moduledata_t ctlfe_moduledata = {
+ "ctlfe",
+ ctlfe_module_event_handler,
+ NULL
+};
+
+DECLARE_MODULE(ctlfe, ctlfe_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH);
+MODULE_VERSION(ctlfe, 1);
+MODULE_DEPEND(ctlfe, ctl, 1, 1, 1);
+MODULE_DEPEND(ctlfe, cam, 1, 1, 1);
extern struct ctl_softc *control_softc;
extern int ctl_disable;
+#ifdef seems_unused
int
ctlfeinitialize(void)
{
@@ -257,6 +274,7 @@ ctlfeinitialize(void)
return (0);
}
+#endif
void
ctlfeshutdown(void)
@@ -288,6 +306,21 @@ ctlfeinit(void)
}
}
+static int
+ctlfe_module_event_handler(module_t mod, int what, void *arg)
+{
+
+ switch (what) {
+ case MOD_LOAD:
+ periphdriver_register(&ctlfe_driver);
+ return (0);
+ case MOD_UNLOAD:
+ return (EBUSY);
+ default:
+ return (EOPNOTSUPP);
+ }
+}
+
static void
ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
{
@@ -1971,7 +2004,6 @@ ctlfe_lun_enable(void *arg, struct ctl_id targ_id, int lun_id)
struct cam_sim *sim;
cam_status status;
-
bus_softc = (struct ctlfe_softc *)arg;
sim = bus_softc->sim;
diff --git a/sys/modules/Makefile b/sys/modules/Makefile
index 28cb56c..55af93a 100644
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -78,6 +78,7 @@ SUBDIR= \
${_cs} \
${_ct} \
${_ctau} \
+ ctl \
${_cxgb} \
cxgbe \
${_cyclic} \
diff --git a/sys/modules/ctl/Makefile b/sys/modules/ctl/Makefile
new file mode 100644
index 0000000..5d4b194
--- /dev/null
+++ b/sys/modules/ctl/Makefile
@@ -0,0 +1,26 @@
+# $FreeBSD$
+
+# $FreeBSD$
+
+.PATH: ${.CURDIR}/../../cam/ctl
+
+KMOD= ctl
+
+SRCS= ctl.c
+SRCS+= ctl_backend.c
+SRCS+= ctl_backend_block.c
+SRCS+= ctl_backend_ramdisk.c
+SRCS+= ctl_cmd_table.c
+SRCS+= ctl_frontend.c
+SRCS+= ctl_frontend_cam_sim.c
+SRCS+= ctl_frontend_internal.c
+SRCS+= ctl_mem_pool.c
+SRCS+= ctl_scsi_all.c
+SRCS+= ctl_error.c
+SRCS+= ctl_util.c
+SRCS+= scsi_ctl.c
+SRCS+= bus_if.h
+SRCS+= device_if.h
+SRCS+= vnode_if.h
+
+.include <bsd.kmod.mk>
diff --git a/usr.bin/ctlstat/ctlstat.8 b/usr.bin/ctlstat/ctlstat.8
index 27386f8..fef1ff8 100644
--- a/usr.bin/ctlstat/ctlstat.8
+++ b/usr.bin/ctlstat/ctlstat.8
@@ -34,7 +34,7 @@
.\" $Id: //depot/users/kenm/FreeBSD-test2/usr.bin/ctlstat/ctlstat.8#2 $
.\" $FreeBSD$
.\"
-.Dd June 4, 2010
+.Dd March 6, 2013
.Dt CTLSTAT 8
.Os
.Sh NAME
@@ -113,6 +113,7 @@ every 10 seconds.
.Sh SEE ALSO
.Xr cam 3 ,
.Xr cam 4 ,
+.Xr ctl 4 ,
.Xr xpt 4 ,
.Xr camcontrol 8 ,
.Xr ctladm 8 ,
diff --git a/usr.sbin/ctladm/ctladm.8 b/usr.sbin/ctladm/ctladm.8
index 2e73aeb..2448f88 100644
--- a/usr.sbin/ctladm/ctladm.8
+++ b/usr.sbin/ctladm/ctladm.8
@@ -34,7 +34,7 @@
.\" $Id: //depot/users/kenm/FreeBSD-test2/usr.sbin/ctladm/ctladm.8#3 $
.\" $FreeBSD$
.\"
-.Dd March 6, 2012
+.Dd March 6, 2013
.Dt CTLADM 8
.Os
.Sh NAME
@@ -975,6 +975,7 @@ This will result in a sense key of NOT READY (0x02), and an ASC/ASCQ of
.Xr cam 3 ,
.Xr cam_cdbparse 3 ,
.Xr cam 4 ,
+.Xr ctl 4 ,
.Xr xpt 4 ,
.Xr camcontrol 8
.Sh HISTORY
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