2019-05-19 12:08:55 +00:00
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// SPDX-License-Identifier: GPL-2.0-only
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2005-04-16 22:20:36 +00:00
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/*
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* scsi_sysfs.c
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*
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* SCSI sysfs interface routines.
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*
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* Created to pull SCSI mid layer sysfs routines into one file.
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*/
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#include <linux/module.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
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#include <linux/slab.h>
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2005-04-16 22:20:36 +00:00
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#include <linux/init.h>
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#include <linux/blkdev.h>
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#include <linux/device.h>
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[SCSI] implement runtime Power Management
This patch (as1398b) adds runtime PM support to the SCSI layer. Only
the machanism is provided; use of it is up to the various high-level
drivers, and the patch doesn't change any of them. Except for sg --
the patch expicitly prevents a device from being runtime-suspended
while its sg device file is open.
The implementation is simplistic. In general, hosts and targets are
automatically suspended when all their children are asleep, but for
them the runtime-suspend code doesn't actually do anything. (A host's
runtime PM status is propagated up the device tree, though, so a
runtime-PM-aware lower-level driver could power down the host adapter
hardware at the appropriate times.) There are comments indicating
where a transport class might be notified or some other hooks added.
LUNs are runtime-suspended by calling the drivers' existing suspend
handlers (and likewise for runtime-resume). Somewhat arbitrarily, the
implementation delays for 100 ms before suspending an eligible LUN.
This is because there typically are occasions during bootup when the
same device file is opened and closed several times in quick
succession.
The way this all works is that the SCSI core increments a device's
PM-usage count when it is registered. If a high-level driver does
nothing then the device will not be eligible for runtime-suspend
because of the elevated usage count. If a high-level driver wants to
use runtime PM then it can call scsi_autopm_put_device() in its probe
routine to decrement the usage count and scsi_autopm_get_device() in
its remove routine to restore the original count.
Hosts, targets, and LUNs are not suspended while they are being probed
or removed, or while the error handler is running. In fact, a fairly
large part of the patch consists of code to make sure that things
aren't suspended at such times.
[jejb: fix up compile issues in PM config variations]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-06-17 14:41:42 +00:00
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#include <linux/pm_runtime.h>
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2021-07-29 06:48:42 +00:00
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#include <linux/bsg.h>
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2005-04-16 22:20:36 +00:00
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#include <scsi/scsi.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_tcq.h>
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2015-12-01 09:16:41 +00:00
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#include <scsi/scsi_dh.h>
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2005-04-16 22:20:36 +00:00
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#include <scsi/scsi_transport.h>
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2007-07-09 18:59:59 +00:00
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#include <scsi/scsi_driver.h>
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2017-10-02 14:26:34 +00:00
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#include <scsi/scsi_devinfo.h>
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2005-04-16 22:20:36 +00:00
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#include "scsi_priv.h"
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#include "scsi_logging.h"
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2008-03-18 13:32:28 +00:00
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static struct device_type scsi_dev_type;
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2005-11-28 15:22:25 +00:00
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static const struct {
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2005-04-16 22:20:36 +00:00
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enum scsi_device_state value;
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char *name;
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} sdev_states[] = {
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{ SDEV_CREATED, "created" },
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{ SDEV_RUNNING, "running" },
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{ SDEV_CANCEL, "cancel" },
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{ SDEV_DEL, "deleted" },
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{ SDEV_QUIESCE, "quiesce" },
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{ SDEV_OFFLINE, "offline" },
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2012-05-18 04:56:56 +00:00
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{ SDEV_TRANSPORT_OFFLINE, "transport-offline" },
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2005-04-16 22:20:36 +00:00
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{ SDEV_BLOCK, "blocked" },
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2008-08-22 21:53:31 +00:00
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{ SDEV_CREATED_BLOCK, "created-blocked" },
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2005-04-16 22:20:36 +00:00
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};
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const char *scsi_device_state_name(enum scsi_device_state state)
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{
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int i;
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char *name = NULL;
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2006-06-09 05:23:48 +00:00
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for (i = 0; i < ARRAY_SIZE(sdev_states); i++) {
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2005-04-16 22:20:36 +00:00
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if (sdev_states[i].value == state) {
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name = sdev_states[i].name;
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break;
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}
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}
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return name;
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}
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2005-11-28 15:22:25 +00:00
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static const struct {
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2005-06-16 18:12:38 +00:00
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enum scsi_host_state value;
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char *name;
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} shost_states[] = {
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{ SHOST_CREATED, "created" },
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{ SHOST_RUNNING, "running" },
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{ SHOST_CANCEL, "cancel" },
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{ SHOST_DEL, "deleted" },
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{ SHOST_RECOVERY, "recovery" },
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2005-09-18 20:05:20 +00:00
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{ SHOST_CANCEL_RECOVERY, "cancel/recovery" },
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{ SHOST_DEL_RECOVERY, "deleted/recovery", },
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2005-06-16 18:12:38 +00:00
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};
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const char *scsi_host_state_name(enum scsi_host_state state)
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{
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int i;
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char *name = NULL;
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2006-06-09 05:23:48 +00:00
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for (i = 0; i < ARRAY_SIZE(shost_states); i++) {
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2005-06-16 18:12:38 +00:00
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if (shost_states[i].value == state) {
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name = shost_states[i].name;
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break;
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}
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}
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return name;
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}
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2016-03-28 18:13:16 +00:00
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#ifdef CONFIG_SCSI_DH
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2016-03-03 06:54:07 +00:00
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static const struct {
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unsigned char value;
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char *name;
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} sdev_access_states[] = {
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{ SCSI_ACCESS_STATE_OPTIMAL, "active/optimized" },
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{ SCSI_ACCESS_STATE_ACTIVE, "active/non-optimized" },
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{ SCSI_ACCESS_STATE_STANDBY, "standby" },
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{ SCSI_ACCESS_STATE_UNAVAILABLE, "unavailable" },
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{ SCSI_ACCESS_STATE_LBA, "lba-dependent" },
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{ SCSI_ACCESS_STATE_OFFLINE, "offline" },
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{ SCSI_ACCESS_STATE_TRANSITIONING, "transitioning" },
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};
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2016-03-28 18:13:16 +00:00
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static const char *scsi_access_state_name(unsigned char state)
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2016-03-03 06:54:07 +00:00
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{
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int i;
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char *name = NULL;
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for (i = 0; i < ARRAY_SIZE(sdev_access_states); i++) {
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if (sdev_access_states[i].value == state) {
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name = sdev_access_states[i].name;
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break;
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}
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}
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return name;
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}
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2016-03-28 18:13:16 +00:00
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#endif
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2016-03-03 06:54:07 +00:00
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2014-06-25 13:27:36 +00:00
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static int check_set(unsigned long long *val, char *src)
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2005-04-16 22:20:36 +00:00
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{
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char *last;
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2017-08-25 20:46:30 +00:00
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if (strcmp(src, "-") == 0) {
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2005-04-16 22:20:36 +00:00
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*val = SCAN_WILD_CARD;
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} else {
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/*
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* Doesn't check for int overflow
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*/
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2014-06-25 13:27:36 +00:00
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*val = simple_strtoull(src, &last, 0);
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2005-04-16 22:20:36 +00:00
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if (*last != '\0')
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return 1;
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}
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return 0;
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}
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static int scsi_scan(struct Scsi_Host *shost, const char *str)
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{
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2014-06-25 13:27:36 +00:00
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char s1[15], s2[15], s3[17], junk;
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unsigned long long channel, id, lun;
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2005-04-16 22:20:36 +00:00
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int res;
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2014-06-25 13:27:36 +00:00
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res = sscanf(str, "%10s %10s %16s %c", s1, s2, s3, &junk);
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2005-04-16 22:20:36 +00:00
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if (res != 3)
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return -EINVAL;
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if (check_set(&channel, s1))
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return -EINVAL;
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if (check_set(&id, s2))
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return -EINVAL;
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if (check_set(&lun, s3))
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return -EINVAL;
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2006-01-13 18:04:00 +00:00
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if (shost->transportt->user_scan)
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res = shost->transportt->user_scan(shost, channel, id, lun);
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else
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2016-03-17 07:39:45 +00:00
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res = scsi_scan_host_selected(shost, channel, id, lun,
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SCSI_SCAN_MANUAL);
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2005-04-16 22:20:36 +00:00
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return res;
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}
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/*
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* shost_show_function: macro to create an attr function that can be used to
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* show a non-bit field.
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*/
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#define shost_show_function(name, field, format_string) \
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static ssize_t \
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2008-02-21 23:13:36 +00:00
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show_##name (struct device *dev, struct device_attribute *attr, \
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char *buf) \
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2005-04-16 22:20:36 +00:00
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{ \
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2008-02-21 23:13:36 +00:00
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struct Scsi_Host *shost = class_to_shost(dev); \
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2005-04-16 22:20:36 +00:00
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return snprintf (buf, 20, format_string, shost->field); \
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}
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/*
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* shost_rd_attr: macro to create a function and attribute variable for a
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* read only field.
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*/
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#define shost_rd_attr2(name, field, format_string) \
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shost_show_function(name, field, format_string) \
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2008-02-21 23:13:36 +00:00
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static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
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2005-04-16 22:20:36 +00:00
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#define shost_rd_attr(field, format_string) \
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shost_rd_attr2(field, field, format_string)
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/*
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* Create the actual show/store functions and data structures.
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*/
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2008-02-21 23:13:36 +00:00
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static ssize_t
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store_scan(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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2005-04-16 22:20:36 +00:00
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{
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2008-02-21 23:13:36 +00:00
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struct Scsi_Host *shost = class_to_shost(dev);
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2005-04-16 22:20:36 +00:00
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int res;
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res = scsi_scan(shost, buf);
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if (res == 0)
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res = count;
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return res;
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};
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2008-02-21 23:13:36 +00:00
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static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
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2005-04-16 22:20:36 +00:00
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2005-06-16 18:12:38 +00:00
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static ssize_t
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2008-02-21 23:13:36 +00:00
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store_shost_state(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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2005-06-16 18:12:38 +00:00
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{
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int i;
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2008-02-21 23:13:36 +00:00
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struct Scsi_Host *shost = class_to_shost(dev);
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2005-06-16 18:12:38 +00:00
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enum scsi_host_state state = 0;
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2006-06-09 05:23:48 +00:00
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for (i = 0; i < ARRAY_SIZE(shost_states); i++) {
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2005-06-16 18:12:38 +00:00
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const int len = strlen(shost_states[i].name);
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if (strncmp(shost_states[i].name, buf, len) == 0 &&
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buf[len] == '\n') {
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state = shost_states[i].value;
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break;
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}
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}
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if (!state)
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return -EINVAL;
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if (scsi_host_set_state(shost, state))
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return -EINVAL;
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return count;
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}
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static ssize_t
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2008-02-21 23:13:36 +00:00
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show_shost_state(struct device *dev, struct device_attribute *attr, char *buf)
|
2005-06-16 18:12:38 +00:00
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{
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2008-02-21 23:13:36 +00:00
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struct Scsi_Host *shost = class_to_shost(dev);
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2005-06-16 18:12:38 +00:00
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const char *name = scsi_host_state_name(shost->shost_state);
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if (!name)
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return -EINVAL;
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return snprintf(buf, 20, "%s\n", name);
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}
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2008-02-21 23:13:36 +00:00
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/* DEVICE_ATTR(state) clashes with dev_attr_state for sdev */
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2016-03-28 18:13:16 +00:00
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static struct device_attribute dev_attr_hstate =
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2008-02-21 23:13:36 +00:00
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__ATTR(state, S_IRUGO | S_IWUSR, show_shost_state, store_shost_state);
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2005-06-16 18:12:38 +00:00
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2007-08-31 17:02:20 +00:00
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static ssize_t
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show_shost_mode(unsigned int mode, char *buf)
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{
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ssize_t len = 0;
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if (mode & MODE_INITIATOR)
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len = sprintf(buf, "%s", "Initiator");
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if (mode & MODE_TARGET)
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|
|
len += sprintf(buf + len, "%s%s", len ? ", " : "", "Target");
|
|
|
|
|
|
|
|
len += sprintf(buf + len, "\n");
|
|
|
|
|
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
2008-02-21 23:13:36 +00:00
|
|
|
static ssize_t
|
|
|
|
show_shost_supported_mode(struct device *dev, struct device_attribute *attr,
|
|
|
|
char *buf)
|
2007-08-31 17:02:20 +00:00
|
|
|
{
|
2008-02-21 23:13:36 +00:00
|
|
|
struct Scsi_Host *shost = class_to_shost(dev);
|
2007-09-26 03:45:53 +00:00
|
|
|
unsigned int supported_mode = shost->hostt->supported_mode;
|
2007-08-31 17:02:20 +00:00
|
|
|
|
2007-09-26 03:45:53 +00:00
|
|
|
if (supported_mode == MODE_UNKNOWN)
|
|
|
|
/* by default this should be initiator */
|
|
|
|
supported_mode = MODE_INITIATOR;
|
|
|
|
|
|
|
|
return show_shost_mode(supported_mode, buf);
|
2007-08-31 17:02:20 +00:00
|
|
|
}
|
|
|
|
|
2008-02-21 23:13:36 +00:00
|
|
|
static DEVICE_ATTR(supported_mode, S_IRUGO | S_IWUSR, show_shost_supported_mode, NULL);
|
2007-08-31 17:02:20 +00:00
|
|
|
|
2008-02-21 23:13:36 +00:00
|
|
|
static ssize_t
|
|
|
|
show_shost_active_mode(struct device *dev,
|
|
|
|
struct device_attribute *attr, char *buf)
|
2007-08-31 17:02:20 +00:00
|
|
|
{
|
2008-02-21 23:13:36 +00:00
|
|
|
struct Scsi_Host *shost = class_to_shost(dev);
|
2007-08-31 17:02:20 +00:00
|
|
|
|
|
|
|
if (shost->active_mode == MODE_UNKNOWN)
|
|
|
|
return snprintf(buf, 20, "unknown\n");
|
|
|
|
else
|
|
|
|
return show_shost_mode(shost->active_mode, buf);
|
|
|
|
}
|
|
|
|
|
2008-02-21 23:13:36 +00:00
|
|
|
static DEVICE_ATTR(active_mode, S_IRUGO | S_IWUSR, show_shost_active_mode, NULL);
|
2007-08-31 17:02:20 +00:00
|
|
|
|
2012-11-15 20:51:46 +00:00
|
|
|
static int check_reset_type(const char *str)
|
2011-08-12 09:51:28 +00:00
|
|
|
{
|
2012-11-15 20:51:46 +00:00
|
|
|
if (sysfs_streq(str, "adapter"))
|
2011-08-12 09:51:28 +00:00
|
|
|
return SCSI_ADAPTER_RESET;
|
2012-11-15 20:51:46 +00:00
|
|
|
else if (sysfs_streq(str, "firmware"))
|
2011-08-12 09:51:28 +00:00
|
|
|
return SCSI_FIRMWARE_RESET;
|
|
|
|
else
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
store_host_reset(struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
|
|
|
{
|
|
|
|
struct Scsi_Host *shost = class_to_shost(dev);
|
|
|
|
struct scsi_host_template *sht = shost->hostt;
|
|
|
|
int ret = -EINVAL;
|
|
|
|
int type;
|
|
|
|
|
2012-11-15 20:51:46 +00:00
|
|
|
type = check_reset_type(buf);
|
2011-08-12 09:51:28 +00:00
|
|
|
if (!type)
|
|
|
|
goto exit_store_host_reset;
|
|
|
|
|
|
|
|
if (sht->host_reset)
|
|
|
|
ret = sht->host_reset(shost, type);
|
2017-08-10 17:52:17 +00:00
|
|
|
else
|
|
|
|
ret = -EOPNOTSUPP;
|
2011-08-12 09:51:28 +00:00
|
|
|
|
|
|
|
exit_store_host_reset:
|
|
|
|
if (ret == 0)
|
|
|
|
ret = count;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static DEVICE_ATTR(host_reset, S_IWUSR, NULL, store_host_reset);
|
|
|
|
|
2013-10-23 08:51:21 +00:00
|
|
|
static ssize_t
|
|
|
|
show_shost_eh_deadline(struct device *dev,
|
|
|
|
struct device_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
struct Scsi_Host *shost = class_to_shost(dev);
|
|
|
|
|
2013-11-11 12:44:56 +00:00
|
|
|
if (shost->eh_deadline == -1)
|
|
|
|
return snprintf(buf, strlen("off") + 2, "off\n");
|
|
|
|
return sprintf(buf, "%u\n", shost->eh_deadline / HZ);
|
2013-10-23 08:51:21 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
store_shost_eh_deadline(struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
|
|
|
{
|
|
|
|
struct Scsi_Host *shost = class_to_shost(dev);
|
|
|
|
int ret = -EINVAL;
|
2013-11-11 12:44:56 +00:00
|
|
|
unsigned long deadline, flags;
|
2013-10-23 08:51:21 +00:00
|
|
|
|
2014-01-17 15:05:38 +00:00
|
|
|
if (shost->transportt &&
|
|
|
|
(shost->transportt->eh_strategy_handler ||
|
|
|
|
!shost->hostt->eh_host_reset_handler))
|
2013-10-23 08:51:21 +00:00
|
|
|
return ret;
|
|
|
|
|
2013-11-11 12:44:56 +00:00
|
|
|
if (!strncmp(buf, "off", strlen("off")))
|
|
|
|
deadline = -1;
|
|
|
|
else {
|
|
|
|
ret = kstrtoul(buf, 10, &deadline);
|
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
if (deadline * HZ > UINT_MAX)
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
|
|
if (scsi_host_in_recovery(shost))
|
|
|
|
ret = -EBUSY;
|
|
|
|
else {
|
|
|
|
if (deadline == -1)
|
|
|
|
shost->eh_deadline = -1;
|
|
|
|
else
|
2013-10-23 08:51:21 +00:00
|
|
|
shost->eh_deadline = deadline * HZ;
|
2013-11-11 12:44:56 +00:00
|
|
|
|
|
|
|
ret = count;
|
2013-10-23 08:51:21 +00:00
|
|
|
}
|
2013-11-11 12:44:56 +00:00
|
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
|
|
|
2013-10-23 08:51:21 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static DEVICE_ATTR(eh_deadline, S_IRUGO | S_IWUSR, show_shost_eh_deadline, store_shost_eh_deadline);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
shost_rd_attr(unique_id, "%u\n");
|
|
|
|
shost_rd_attr(cmd_per_lun, "%hd\n");
|
2020-11-07 08:11:32 +00:00
|
|
|
shost_rd_attr(can_queue, "%d\n");
|
2005-04-16 22:20:36 +00:00
|
|
|
shost_rd_attr(sg_tablesize, "%hu\n");
|
2010-09-10 18:50:10 +00:00
|
|
|
shost_rd_attr(sg_prot_tablesize, "%hu\n");
|
2008-07-17 08:28:30 +00:00
|
|
|
shost_rd_attr(prot_capabilities, "%u\n");
|
|
|
|
shost_rd_attr(prot_guard_type, "%hd\n");
|
2005-04-16 22:20:36 +00:00
|
|
|
shost_rd_attr2(proc_name, hostt->proc_name, "%s\n");
|
|
|
|
|
2014-01-22 14:29:29 +00:00
|
|
|
static ssize_t
|
|
|
|
show_host_busy(struct device *dev, struct device_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
struct Scsi_Host *shost = class_to_shost(dev);
|
2018-06-24 14:03:26 +00:00
|
|
|
return snprintf(buf, 20, "%d\n", scsi_host_busy(shost));
|
2014-01-22 14:29:29 +00:00
|
|
|
}
|
|
|
|
static DEVICE_ATTR(host_busy, S_IRUGO, show_host_busy, NULL);
|
|
|
|
|
2018-11-01 22:36:27 +00:00
|
|
|
static ssize_t
|
|
|
|
show_use_blk_mq(struct device *dev, struct device_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
return sprintf(buf, "1\n");
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(use_blk_mq, S_IRUGO, show_use_blk_mq, NULL);
|
|
|
|
|
2020-08-19 15:20:31 +00:00
|
|
|
static ssize_t
|
|
|
|
show_nr_hw_queues(struct device *dev, struct device_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
struct Scsi_Host *shost = class_to_shost(dev);
|
|
|
|
struct blk_mq_tag_set *tag_set = &shost->tag_set;
|
|
|
|
|
|
|
|
return snprintf(buf, 20, "%d\n", tag_set->nr_hw_queues);
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(nr_hw_queues, S_IRUGO, show_nr_hw_queues, NULL);
|
|
|
|
|
2008-03-18 13:32:28 +00:00
|
|
|
static struct attribute *scsi_sysfs_shost_attrs[] = {
|
2014-01-17 11:06:53 +00:00
|
|
|
&dev_attr_use_blk_mq.attr,
|
2008-03-18 13:32:28 +00:00
|
|
|
&dev_attr_unique_id.attr,
|
|
|
|
&dev_attr_host_busy.attr,
|
|
|
|
&dev_attr_cmd_per_lun.attr,
|
|
|
|
&dev_attr_can_queue.attr,
|
|
|
|
&dev_attr_sg_tablesize.attr,
|
2010-09-10 18:50:10 +00:00
|
|
|
&dev_attr_sg_prot_tablesize.attr,
|
2008-03-18 13:32:28 +00:00
|
|
|
&dev_attr_proc_name.attr,
|
|
|
|
&dev_attr_scan.attr,
|
|
|
|
&dev_attr_hstate.attr,
|
|
|
|
&dev_attr_supported_mode.attr,
|
|
|
|
&dev_attr_active_mode.attr,
|
2008-07-17 08:28:30 +00:00
|
|
|
&dev_attr_prot_capabilities.attr,
|
|
|
|
&dev_attr_prot_guard_type.attr,
|
2011-08-12 09:51:28 +00:00
|
|
|
&dev_attr_host_reset.attr,
|
2013-10-23 08:51:21 +00:00
|
|
|
&dev_attr_eh_deadline.attr,
|
2020-08-19 15:20:31 +00:00
|
|
|
&dev_attr_nr_hw_queues.attr,
|
2008-03-18 13:32:28 +00:00
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
2021-10-12 23:35:13 +00:00
|
|
|
const struct attribute_group scsi_shost_attr_group = {
|
2008-03-18 13:32:28 +00:00
|
|
|
.attrs = scsi_sysfs_shost_attrs,
|
|
|
|
};
|
|
|
|
|
2008-02-21 23:13:36 +00:00
|
|
|
static void scsi_device_cls_release(struct device *class_dev)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct scsi_device *sdev;
|
|
|
|
|
|
|
|
sdev = class_to_sdev(class_dev);
|
|
|
|
put_device(&sdev->sdev_gendev);
|
|
|
|
}
|
|
|
|
|
2006-11-22 14:55:48 +00:00
|
|
|
static void scsi_device_dev_release_usercontext(struct work_struct *work)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct scsi_device *sdev;
|
|
|
|
struct device *parent;
|
2007-10-29 21:15:22 +00:00
|
|
|
struct list_head *this, *tmp;
|
2017-08-29 15:50:13 +00:00
|
|
|
struct scsi_vpd *vpd_pg80 = NULL, *vpd_pg83 = NULL;
|
2019-09-26 16:22:17 +00:00
|
|
|
struct scsi_vpd *vpd_pg0 = NULL, *vpd_pg89 = NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
unsigned long flags;
|
2021-10-08 05:01:18 +00:00
|
|
|
struct module *mod;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-11-22 14:55:48 +00:00
|
|
|
sdev = container_of(work, struct scsi_device, ew.work);
|
|
|
|
|
2021-10-08 05:01:18 +00:00
|
|
|
mod = sdev->host->hostt->module;
|
|
|
|
|
2015-10-06 04:32:57 +00:00
|
|
|
scsi_dh_release_device(sdev);
|
|
|
|
|
2006-11-22 14:55:48 +00:00
|
|
|
parent = sdev->sdev_gendev.parent;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
spin_lock_irqsave(sdev->host->host_lock, flags);
|
|
|
|
list_del(&sdev->siblings);
|
|
|
|
list_del(&sdev->same_target_siblings);
|
|
|
|
list_del(&sdev->starved_entry);
|
|
|
|
spin_unlock_irqrestore(sdev->host->host_lock, flags);
|
|
|
|
|
2007-10-29 21:15:22 +00:00
|
|
|
cancel_work_sync(&sdev->event_work);
|
|
|
|
|
|
|
|
list_for_each_safe(this, tmp, &sdev->event_list) {
|
|
|
|
struct scsi_event *evt;
|
|
|
|
|
|
|
|
evt = list_entry(this, struct scsi_event, node);
|
|
|
|
list_del(&evt->node);
|
|
|
|
kfree(evt);
|
|
|
|
}
|
|
|
|
|
2011-05-25 20:52:14 +00:00
|
|
|
blk_put_queue(sdev->request_queue);
|
2011-04-22 15:39:59 +00:00
|
|
|
/* NULL queue means the device can't be used */
|
|
|
|
sdev->request_queue = NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2021-01-22 02:33:17 +00:00
|
|
|
sbitmap_free(&sdev->budget_map);
|
|
|
|
|
2017-08-29 15:50:13 +00:00
|
|
|
mutex_lock(&sdev->inquiry_mutex);
|
SCSI misc on 20191130
This is mostly update of the usual drivers: aacraid, ufs, zfcp,
NCR5380, lpfc, qla2xxx, smartpqi, hisi_sas, target, mpt3sas, pm80xx
plus a whole load of minor updates and fixes. The two major core
changes are Al Viro's reworking of sg's handling of copy to/from user,
Ming Lei's removal of the host busy counter to avoid contention in the
multiqueue case and Damien Le Moal's fixing of residual tracking
across error handling.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
-----BEGIN PGP SIGNATURE-----
iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCXeKvHCYcamFtZXMuYm90
dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishQJMAQDAjlAi
SNfbyndMqyf+rZGWufDI+43Up1VvW9GeWJHeDwEAxfO5XZsCks2uT8UxXhpEp9L7
HkiUww3zbcgl0FWFkUM=
=cdVU
-----END PGP SIGNATURE-----
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This is mostly update of the usual drivers: aacraid, ufs, zfcp,
NCR5380, lpfc, qla2xxx, smartpqi, hisi_sas, target, mpt3sas, pm80xx
plus a whole load of minor updates and fixes.
The major core changes are Al Viro's reworking of sg's handling of
copy to/from user, Ming Lei's removal of the host busy counter to
avoid contention in the multiqueue case and Damien Le Moal's fixing of
residual tracking across error handling"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (251 commits)
scsi: bnx2fc: timeout calculation invalid for bnx2fc_eh_abort()
scsi: target: core: Fix a pr_debug() argument
scsi: iscsi: Don't send data to unbound connection
scsi: target: iscsi: Wait for all commands to finish before freeing a session
scsi: target: core: Release SPC-2 reservations when closing a session
scsi: target: core: Document target_cmd_size_check()
scsi: bnx2i: fix potential use after free
Revert "scsi: qla2xxx: Fix memory leak when sending I/O fails"
scsi: NCR5380: Add disconnect_mask module parameter
scsi: NCR5380: Unconditionally clear ICR after do_abort()
scsi: NCR5380: Call scsi_set_resid() on command completion
scsi: scsi_debug: num_tgts must be >= 0
scsi: lpfc: use hdwq assigned cpu for allocation
scsi: arcmsr: fix indentation issues
scsi: qla4xxx: fix double free bug
scsi: pm80xx: Modified the logic to collect fatal dump
scsi: pm80xx: Tie the interrupt name to the module instance
scsi: pm80xx: Controller fatal error through sysfs
scsi: pm80xx: Do not request 12G sas speeds
scsi: pm80xx: Cleanup command when a reset times out
...
2019-12-02 21:37:02 +00:00
|
|
|
vpd_pg0 = rcu_replace_pointer(sdev->vpd_pg0, vpd_pg0,
|
|
|
|
lockdep_is_held(&sdev->inquiry_mutex));
|
2019-09-23 22:26:28 +00:00
|
|
|
vpd_pg80 = rcu_replace_pointer(sdev->vpd_pg80, vpd_pg80,
|
|
|
|
lockdep_is_held(&sdev->inquiry_mutex));
|
|
|
|
vpd_pg83 = rcu_replace_pointer(sdev->vpd_pg83, vpd_pg83,
|
|
|
|
lockdep_is_held(&sdev->inquiry_mutex));
|
SCSI misc on 20191130
This is mostly update of the usual drivers: aacraid, ufs, zfcp,
NCR5380, lpfc, qla2xxx, smartpqi, hisi_sas, target, mpt3sas, pm80xx
plus a whole load of minor updates and fixes. The two major core
changes are Al Viro's reworking of sg's handling of copy to/from user,
Ming Lei's removal of the host busy counter to avoid contention in the
multiqueue case and Damien Le Moal's fixing of residual tracking
across error handling.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
-----BEGIN PGP SIGNATURE-----
iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCXeKvHCYcamFtZXMuYm90
dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishQJMAQDAjlAi
SNfbyndMqyf+rZGWufDI+43Up1VvW9GeWJHeDwEAxfO5XZsCks2uT8UxXhpEp9L7
HkiUww3zbcgl0FWFkUM=
=cdVU
-----END PGP SIGNATURE-----
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This is mostly update of the usual drivers: aacraid, ufs, zfcp,
NCR5380, lpfc, qla2xxx, smartpqi, hisi_sas, target, mpt3sas, pm80xx
plus a whole load of minor updates and fixes.
The major core changes are Al Viro's reworking of sg's handling of
copy to/from user, Ming Lei's removal of the host busy counter to
avoid contention in the multiqueue case and Damien Le Moal's fixing of
residual tracking across error handling"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (251 commits)
scsi: bnx2fc: timeout calculation invalid for bnx2fc_eh_abort()
scsi: target: core: Fix a pr_debug() argument
scsi: iscsi: Don't send data to unbound connection
scsi: target: iscsi: Wait for all commands to finish before freeing a session
scsi: target: core: Release SPC-2 reservations when closing a session
scsi: target: core: Document target_cmd_size_check()
scsi: bnx2i: fix potential use after free
Revert "scsi: qla2xxx: Fix memory leak when sending I/O fails"
scsi: NCR5380: Add disconnect_mask module parameter
scsi: NCR5380: Unconditionally clear ICR after do_abort()
scsi: NCR5380: Call scsi_set_resid() on command completion
scsi: scsi_debug: num_tgts must be >= 0
scsi: lpfc: use hdwq assigned cpu for allocation
scsi: arcmsr: fix indentation issues
scsi: qla4xxx: fix double free bug
scsi: pm80xx: Modified the logic to collect fatal dump
scsi: pm80xx: Tie the interrupt name to the module instance
scsi: pm80xx: Controller fatal error through sysfs
scsi: pm80xx: Do not request 12G sas speeds
scsi: pm80xx: Cleanup command when a reset times out
...
2019-12-02 21:37:02 +00:00
|
|
|
vpd_pg89 = rcu_replace_pointer(sdev->vpd_pg89, vpd_pg89,
|
|
|
|
lockdep_is_held(&sdev->inquiry_mutex));
|
2017-08-29 15:50:13 +00:00
|
|
|
mutex_unlock(&sdev->inquiry_mutex);
|
|
|
|
|
2019-09-26 16:22:17 +00:00
|
|
|
if (vpd_pg0)
|
|
|
|
kfree_rcu(vpd_pg0, rcu);
|
2017-08-29 15:50:13 +00:00
|
|
|
if (vpd_pg83)
|
|
|
|
kfree_rcu(vpd_pg83, rcu);
|
|
|
|
if (vpd_pg80)
|
|
|
|
kfree_rcu(vpd_pg80, rcu);
|
2019-09-26 16:22:17 +00:00
|
|
|
if (vpd_pg89)
|
|
|
|
kfree_rcu(vpd_pg89, rcu);
|
2005-04-16 22:20:36 +00:00
|
|
|
kfree(sdev->inquiry);
|
|
|
|
kfree(sdev);
|
|
|
|
|
|
|
|
if (parent)
|
|
|
|
put_device(parent);
|
2021-10-08 05:01:18 +00:00
|
|
|
module_put(mod);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-02-14 16:48:46 +00:00
|
|
|
static void scsi_device_dev_release(struct device *dev)
|
|
|
|
{
|
2006-02-23 20:27:18 +00:00
|
|
|
struct scsi_device *sdp = to_scsi_device(dev);
|
2021-10-08 05:01:18 +00:00
|
|
|
|
|
|
|
/* Set module pointer as NULL in case of module unloading */
|
|
|
|
if (!try_module_get(sdp->host->hostt->module))
|
|
|
|
sdp->host->hostt->module = NULL;
|
|
|
|
|
2006-11-22 14:55:48 +00:00
|
|
|
execute_in_process_context(scsi_device_dev_release_usercontext,
|
2006-02-23 20:27:18 +00:00
|
|
|
&sdp->ew);
|
2006-02-14 16:48:46 +00:00
|
|
|
}
|
|
|
|
|
2005-06-24 05:05:33 +00:00
|
|
|
static struct class sdev_class = {
|
2005-04-16 22:20:36 +00:00
|
|
|
.name = "scsi_device",
|
2008-02-21 23:13:36 +00:00
|
|
|
.dev_release = scsi_device_cls_release,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
/* all probing is done in the individual ->probe routines */
|
|
|
|
static int scsi_bus_match(struct device *dev, struct device_driver *gendrv)
|
|
|
|
{
|
2008-03-18 13:32:28 +00:00
|
|
|
struct scsi_device *sdp;
|
|
|
|
|
|
|
|
if (dev->type != &scsi_dev_type)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
sdp = to_scsi_device(dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (sdp->no_uld_attach)
|
|
|
|
return 0;
|
|
|
|
return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0;
|
|
|
|
}
|
|
|
|
|
2007-08-14 13:15:12 +00:00
|
|
|
static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
|
[SCSI] modalias for scsi devices
The following patch adds support for sysfs/uevent modalias
attribute for scsi devices (like disks, tapes, cdroms etc),
based on whatever current sd.c, sr.c, st.c and osst.c drivers
supports.
The modalias format is like this:
scsi:type-0x04
(for TYPE_WORM, handled by sr.c now).
Several comments.
o This hexadecimal type value is because all TYPE_XXX constants
in include/scsi/scsi.h are given in hex, but __stringify() will
not convert them to decimal (so it will NOT be scsi:type-4).
Since it does not really matter in which format it is, while
both modalias in module and modalias attribute match each other,
I descided to go for that 0x%02x format (and added a comment in
include/scsi/scsi.h to keep them that way), instead of changing
them all to decimal.
o There was no .uevent routine for SCSI bus. It might be a good
idea to add some more ueven environment variables in there.
o osst.c driver handles tapes too, like st.c, but only SOME tapes.
With this setup, hotplug scripts (or whatever is used by the
user) will try to load both st and osst modules for all SCSI
tapes found, because both modules have scsi:type-0x01 alias).
It is not harmful, but one extra module is no good either.
It is possible to solve this, by exporting more info in
modalias attribute, including vendor and device identification
strings, so that modalias becomes something like
scsi:type-0x12:vendor-Adaptec LTD:device-OnStream Tape Drive
and having that, match for all 3 attributes, not only device
type. But oh well, vendor and device strings may be large,
and they do contain spaces and whatnot.
So I left them for now, awaiting for comments first.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-27 12:02:37 +00:00
|
|
|
{
|
2008-05-22 11:34:41 +00:00
|
|
|
struct scsi_device *sdev;
|
|
|
|
|
|
|
|
if (dev->type != &scsi_dev_type)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
sdev = to_scsi_device(dev);
|
[SCSI] modalias for scsi devices
The following patch adds support for sysfs/uevent modalias
attribute for scsi devices (like disks, tapes, cdroms etc),
based on whatever current sd.c, sr.c, st.c and osst.c drivers
supports.
The modalias format is like this:
scsi:type-0x04
(for TYPE_WORM, handled by sr.c now).
Several comments.
o This hexadecimal type value is because all TYPE_XXX constants
in include/scsi/scsi.h are given in hex, but __stringify() will
not convert them to decimal (so it will NOT be scsi:type-4).
Since it does not really matter in which format it is, while
both modalias in module and modalias attribute match each other,
I descided to go for that 0x%02x format (and added a comment in
include/scsi/scsi.h to keep them that way), instead of changing
them all to decimal.
o There was no .uevent routine for SCSI bus. It might be a good
idea to add some more ueven environment variables in there.
o osst.c driver handles tapes too, like st.c, but only SOME tapes.
With this setup, hotplug scripts (or whatever is used by the
user) will try to load both st and osst modules for all SCSI
tapes found, because both modules have scsi:type-0x01 alias).
It is not harmful, but one extra module is no good either.
It is possible to solve this, by exporting more info in
modalias attribute, including vendor and device identification
strings, so that modalias becomes something like
scsi:type-0x12:vendor-Adaptec LTD:device-OnStream Tape Drive
and having that, match for all 3 attributes, not only device
type. But oh well, vendor and device strings may be large,
and they do contain spaces and whatnot.
So I left them for now, awaiting for comments first.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-27 12:02:37 +00:00
|
|
|
|
2007-08-14 13:15:12 +00:00
|
|
|
add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type);
|
[SCSI] modalias for scsi devices
The following patch adds support for sysfs/uevent modalias
attribute for scsi devices (like disks, tapes, cdroms etc),
based on whatever current sd.c, sr.c, st.c and osst.c drivers
supports.
The modalias format is like this:
scsi:type-0x04
(for TYPE_WORM, handled by sr.c now).
Several comments.
o This hexadecimal type value is because all TYPE_XXX constants
in include/scsi/scsi.h are given in hex, but __stringify() will
not convert them to decimal (so it will NOT be scsi:type-4).
Since it does not really matter in which format it is, while
both modalias in module and modalias attribute match each other,
I descided to go for that 0x%02x format (and added a comment in
include/scsi/scsi.h to keep them that way), instead of changing
them all to decimal.
o There was no .uevent routine for SCSI bus. It might be a good
idea to add some more ueven environment variables in there.
o osst.c driver handles tapes too, like st.c, but only SOME tapes.
With this setup, hotplug scripts (or whatever is used by the
user) will try to load both st and osst modules for all SCSI
tapes found, because both modules have scsi:type-0x01 alias).
It is not harmful, but one extra module is no good either.
It is possible to solve this, by exporting more info in
modalias attribute, including vendor and device identification
strings, so that modalias becomes something like
scsi:type-0x12:vendor-Adaptec LTD:device-OnStream Tape Drive
and having that, match for all 3 attributes, not only device
type. But oh well, vendor and device strings may be large,
and they do contain spaces and whatnot.
So I left them for now, awaiting for comments first.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-27 12:02:37 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
struct bus_type scsi_bus_type = {
|
|
|
|
.name = "scsi",
|
|
|
|
.match = scsi_bus_match,
|
[SCSI] modalias for scsi devices
The following patch adds support for sysfs/uevent modalias
attribute for scsi devices (like disks, tapes, cdroms etc),
based on whatever current sd.c, sr.c, st.c and osst.c drivers
supports.
The modalias format is like this:
scsi:type-0x04
(for TYPE_WORM, handled by sr.c now).
Several comments.
o This hexadecimal type value is because all TYPE_XXX constants
in include/scsi/scsi.h are given in hex, but __stringify() will
not convert them to decimal (so it will NOT be scsi:type-4).
Since it does not really matter in which format it is, while
both modalias in module and modalias attribute match each other,
I descided to go for that 0x%02x format (and added a comment in
include/scsi/scsi.h to keep them that way), instead of changing
them all to decimal.
o There was no .uevent routine for SCSI bus. It might be a good
idea to add some more ueven environment variables in there.
o osst.c driver handles tapes too, like st.c, but only SOME tapes.
With this setup, hotplug scripts (or whatever is used by the
user) will try to load both st and osst modules for all SCSI
tapes found, because both modules have scsi:type-0x01 alias).
It is not harmful, but one extra module is no good either.
It is possible to solve this, by exporting more info in
modalias attribute, including vendor and device identification
strings, so that modalias becomes something like
scsi:type-0x12:vendor-Adaptec LTD:device-OnStream Tape Drive
and having that, match for all 3 attributes, not only device
type. But oh well, vendor and device strings may be large,
and they do contain spaces and whatnot.
So I left them for now, awaiting for comments first.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-27 12:02:37 +00:00
|
|
|
.uevent = scsi_bus_uevent,
|
2011-02-10 23:06:54 +00:00
|
|
|
#ifdef CONFIG_PM
|
2010-06-17 14:36:49 +00:00
|
|
|
.pm = &scsi_bus_pm_ops,
|
2010-08-05 17:17:10 +00:00
|
|
|
#endif
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
2008-05-01 21:49:46 +00:00
|
|
|
EXPORT_SYMBOL_GPL(scsi_bus_type);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
int scsi_sysfs_register(void)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
|
|
|
|
error = bus_register(&scsi_bus_type);
|
|
|
|
if (!error) {
|
|
|
|
error = class_register(&sdev_class);
|
|
|
|
if (error)
|
|
|
|
bus_unregister(&scsi_bus_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
|
|
void scsi_sysfs_unregister(void)
|
|
|
|
{
|
|
|
|
class_unregister(&sdev_class);
|
|
|
|
bus_unregister(&scsi_bus_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* sdev_show_function: macro to create an attr function that can be used to
|
|
|
|
* show a non-bit field.
|
|
|
|
*/
|
|
|
|
#define sdev_show_function(field, format_string) \
|
|
|
|
static ssize_t \
|
2008-02-21 23:13:36 +00:00
|
|
|
sdev_show_##field (struct device *dev, struct device_attribute *attr, \
|
|
|
|
char *buf) \
|
2005-04-16 22:20:36 +00:00
|
|
|
{ \
|
|
|
|
struct scsi_device *sdev; \
|
|
|
|
sdev = to_scsi_device(dev); \
|
|
|
|
return snprintf (buf, 20, format_string, sdev->field); \
|
|
|
|
} \
|
|
|
|
|
|
|
|
/*
|
|
|
|
* sdev_rd_attr: macro to create a function and attribute variable for a
|
|
|
|
* read only field.
|
|
|
|
*/
|
|
|
|
#define sdev_rd_attr(field, format_string) \
|
|
|
|
sdev_show_function(field, format_string) \
|
|
|
|
static DEVICE_ATTR(field, S_IRUGO, sdev_show_##field, NULL);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
2010-04-14 06:15:14 +00:00
|
|
|
* sdev_rw_attr: create a function and attribute variable for a
|
2005-04-16 22:20:36 +00:00
|
|
|
* read/write field.
|
|
|
|
*/
|
|
|
|
#define sdev_rw_attr(field, format_string) \
|
|
|
|
sdev_show_function(field, format_string) \
|
|
|
|
\
|
|
|
|
static ssize_t \
|
2008-02-21 23:13:36 +00:00
|
|
|
sdev_store_##field (struct device *dev, struct device_attribute *attr, \
|
|
|
|
const char *buf, size_t count) \
|
2005-04-16 22:20:36 +00:00
|
|
|
{ \
|
|
|
|
struct scsi_device *sdev; \
|
|
|
|
sdev = to_scsi_device(dev); \
|
2010-04-14 06:15:14 +00:00
|
|
|
sscanf (buf, format_string, &sdev->field); \
|
2005-04-16 22:20:36 +00:00
|
|
|
return count; \
|
|
|
|
} \
|
|
|
|
static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field);
|
|
|
|
|
|
|
|
/* Currently we don't export bit fields, but we might in future,
|
|
|
|
* so leave this code in */
|
|
|
|
#if 0
|
|
|
|
/*
|
|
|
|
* sdev_rd_attr: create a function and attribute variable for a
|
|
|
|
* read/write bit field.
|
|
|
|
*/
|
|
|
|
#define sdev_rw_attr_bit(field) \
|
|
|
|
sdev_show_function(field, "%d\n") \
|
|
|
|
\
|
|
|
|
static ssize_t \
|
2008-02-21 23:13:36 +00:00
|
|
|
sdev_store_##field (struct device *dev, struct device_attribute *attr, \
|
|
|
|
const char *buf, size_t count) \
|
2005-04-16 22:20:36 +00:00
|
|
|
{ \
|
|
|
|
int ret; \
|
|
|
|
struct scsi_device *sdev; \
|
|
|
|
ret = scsi_sdev_check_buf_bit(buf); \
|
|
|
|
if (ret >= 0) { \
|
|
|
|
sdev = to_scsi_device(dev); \
|
|
|
|
sdev->field = ret; \
|
|
|
|
ret = count; \
|
|
|
|
} \
|
|
|
|
return ret; \
|
|
|
|
} \
|
|
|
|
static DEVICE_ATTR(field, S_IRUGO | S_IWUSR, sdev_show_##field, sdev_store_##field);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* scsi_sdev_check_buf_bit: return 0 if buf is "0", return 1 if buf is "1",
|
|
|
|
* else return -EINVAL.
|
|
|
|
*/
|
|
|
|
static int scsi_sdev_check_buf_bit(const char *buf)
|
|
|
|
{
|
|
|
|
if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) {
|
|
|
|
if (buf[0] == '1')
|
|
|
|
return 1;
|
|
|
|
else if (buf[0] == '0')
|
|
|
|
return 0;
|
|
|
|
else
|
|
|
|
return -EINVAL;
|
|
|
|
} else
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
|
|
* Create the actual show/store functions and data structures.
|
|
|
|
*/
|
|
|
|
sdev_rd_attr (type, "%d\n");
|
|
|
|
sdev_rd_attr (scsi_level, "%d\n");
|
|
|
|
sdev_rd_attr (vendor, "%.8s\n");
|
|
|
|
sdev_rd_attr (model, "%.16s\n");
|
|
|
|
sdev_rd_attr (rev, "%.4s\n");
|
|
|
|
|
2014-04-11 17:07:01 +00:00
|
|
|
static ssize_t
|
|
|
|
sdev_show_device_busy(struct device *dev, struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
2021-01-22 02:33:15 +00:00
|
|
|
return snprintf(buf, 20, "%d\n", scsi_device_busy(sdev));
|
2014-04-11 17:07:01 +00:00
|
|
|
}
|
|
|
|
static DEVICE_ATTR(device_busy, S_IRUGO, sdev_show_device_busy, NULL);
|
|
|
|
|
2014-01-23 11:07:41 +00:00
|
|
|
static ssize_t
|
|
|
|
sdev_show_device_blocked(struct device *dev, struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
return snprintf(buf, 20, "%d\n", atomic_read(&sdev->device_blocked));
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(device_blocked, S_IRUGO, sdev_show_device_blocked, NULL);
|
|
|
|
|
2008-09-14 12:55:09 +00:00
|
|
|
/*
|
|
|
|
* TODO: can we make these symlinks to the block layer ones?
|
|
|
|
*/
|
2005-04-16 22:20:36 +00:00
|
|
|
static ssize_t
|
2005-05-17 10:43:37 +00:00
|
|
|
sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct scsi_device *sdev;
|
|
|
|
sdev = to_scsi_device(dev);
|
2008-09-14 12:55:09 +00:00
|
|
|
return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
2008-02-21 23:13:36 +00:00
|
|
|
sdev_store_timeout (struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct scsi_device *sdev;
|
|
|
|
int timeout;
|
|
|
|
sdev = to_scsi_device(dev);
|
|
|
|
sscanf (buf, "%d\n", &timeout);
|
2008-09-14 12:55:09 +00:00
|
|
|
blk_queue_rq_timeout(sdev->request_queue, timeout * HZ);
|
2005-04-16 22:20:36 +00:00
|
|
|
return count;
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout);
|
|
|
|
|
2013-05-10 14:36:04 +00:00
|
|
|
static ssize_t
|
|
|
|
sdev_show_eh_timeout(struct device *dev, struct device_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev;
|
|
|
|
sdev = to_scsi_device(dev);
|
|
|
|
return snprintf(buf, 20, "%u\n", sdev->eh_timeout / HZ);
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
sdev_store_eh_timeout(struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev;
|
|
|
|
unsigned int eh_timeout;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
|
|
return -EACCES;
|
|
|
|
|
|
|
|
sdev = to_scsi_device(dev);
|
|
|
|
err = kstrtouint(buf, 10, &eh_timeout);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
sdev->eh_timeout = eh_timeout * HZ;
|
|
|
|
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(eh_timeout, S_IRUGO | S_IWUSR, sdev_show_eh_timeout, sdev_store_eh_timeout);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
static ssize_t
|
2008-02-21 23:13:36 +00:00
|
|
|
store_rescan_field (struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
scsi_rescan_device(dev);
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field);
|
|
|
|
|
2008-02-21 23:13:36 +00:00
|
|
|
static ssize_t
|
|
|
|
sdev_store_delete(struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2018-08-02 17:51:41 +00:00
|
|
|
struct kernfs_node *kn;
|
2019-10-15 13:05:56 +00:00
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We need to try to get module, avoiding the module been removed
|
|
|
|
* during delete.
|
|
|
|
*/
|
|
|
|
if (scsi_device_get(sdev))
|
|
|
|
return -ENODEV;
|
2018-08-02 17:51:41 +00:00
|
|
|
|
|
|
|
kn = sysfs_break_active_protection(&dev->kobj, &attr->attr);
|
|
|
|
WARN_ON_ONCE(!kn);
|
|
|
|
/*
|
|
|
|
* Concurrent writes into the "delete" sysfs attribute may trigger
|
|
|
|
* concurrent calls to device_remove_file() and scsi_remove_device().
|
|
|
|
* device_remove_file() handles concurrent removal calls by
|
|
|
|
* serializing these and by ignoring the second and later removal
|
|
|
|
* attempts. Concurrent calls of scsi_remove_device() are
|
|
|
|
* serialized. The second and later calls of scsi_remove_device() are
|
|
|
|
* ignored because the first call of that function changes the device
|
|
|
|
* state into SDEV_DEL.
|
|
|
|
*/
|
|
|
|
device_remove_file(dev, attr);
|
2019-10-15 13:05:56 +00:00
|
|
|
scsi_remove_device(sdev);
|
2018-08-02 17:51:41 +00:00
|
|
|
if (kn)
|
|
|
|
sysfs_unbreak_active_protection(kn);
|
2019-10-15 13:05:56 +00:00
|
|
|
scsi_device_put(sdev);
|
2005-04-16 22:20:36 +00:00
|
|
|
return count;
|
|
|
|
};
|
|
|
|
static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);
|
|
|
|
|
|
|
|
static ssize_t
|
2008-02-21 23:13:36 +00:00
|
|
|
store_state_field(struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2017-06-02 21:21:55 +00:00
|
|
|
int i, ret;
|
2005-04-16 22:20:36 +00:00
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
enum scsi_device_state state = 0;
|
2021-11-05 22:10:48 +00:00
|
|
|
bool rescan_dev = false;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-06-09 05:23:48 +00:00
|
|
|
for (i = 0; i < ARRAY_SIZE(sdev_states); i++) {
|
2005-04-16 22:20:36 +00:00
|
|
|
const int len = strlen(sdev_states[i].name);
|
|
|
|
if (strncmp(sdev_states[i].name, buf, len) == 0 &&
|
|
|
|
buf[len] == '\n') {
|
|
|
|
state = sdev_states[i].value;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
scsi: Restrict user space SCSI device state changes to "running" and "offline"
The ability to modify the SCSI device state was introduced by commit
638127e579a4 ("[PATCH] Fix error handler offline behaviour"; v2.6.12). That
same commit introduced the following device states:
{ SDEV_CREATED, "created" },
{ SDEV_RUNNING, "running" },
{ SDEV_CANCEL, "cancel" },
{ SDEV_DEL, "deleted" },
{ SDEV_QUIESCE, "quiesce" },
{ SDEV_OFFLINE, "offline" },
The SDEV_BLOCK state was introduced later to avoid that an FC cable pull
would immediately result in an I/O error (commit 1094e682310e; "[PATCH]
suspending I/Os to a device"; v2.6.12). That same patch introduced the
ability to set the SDEV_BLOCK state from user space. I'm not sure whether
that ability was introduced on purpose or accidentally.
Since there is agreement that only writing "running" or "offline" into
the SCSI sysfs device state attribute makes sense, restrict sysfs writes
to these values.
This patch makes sure that SDEV_BLOCK is only used for its original
purpose, namely to allow transport drivers and LLDs to block further
.queuecommand() calls while transport layer or adapter recovery is in
progress.
Note: a web search for "/sys/class/scsi_device" AND "device/state"
revealed several storage configuration guides. The instructions I found
in these guides tell users to write the value "running" or "offline" in
the SCSI device state sysfs attribute and no other values.
[mkp: typo]
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: James Smart <james.smart@broadcom.com>
Cc: Ewan D. Milne <emilne@redhat.com>
Cc: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-06-17 15:18:18 +00:00
|
|
|
switch (state) {
|
|
|
|
case SDEV_RUNNING:
|
|
|
|
case SDEV_OFFLINE:
|
|
|
|
break;
|
|
|
|
default:
|
2005-04-16 22:20:36 +00:00
|
|
|
return -EINVAL;
|
scsi: Restrict user space SCSI device state changes to "running" and "offline"
The ability to modify the SCSI device state was introduced by commit
638127e579a4 ("[PATCH] Fix error handler offline behaviour"; v2.6.12). That
same commit introduced the following device states:
{ SDEV_CREATED, "created" },
{ SDEV_RUNNING, "running" },
{ SDEV_CANCEL, "cancel" },
{ SDEV_DEL, "deleted" },
{ SDEV_QUIESCE, "quiesce" },
{ SDEV_OFFLINE, "offline" },
The SDEV_BLOCK state was introduced later to avoid that an FC cable pull
would immediately result in an I/O error (commit 1094e682310e; "[PATCH]
suspending I/Os to a device"; v2.6.12). That same patch introduced the
ability to set the SDEV_BLOCK state from user space. I'm not sure whether
that ability was introduced on purpose or accidentally.
Since there is agreement that only writing "running" or "offline" into
the SCSI sysfs device state attribute makes sense, restrict sysfs writes
to these values.
This patch makes sure that SDEV_BLOCK is only used for its original
purpose, namely to allow transport drivers and LLDs to block further
.queuecommand() calls while transport layer or adapter recovery is in
progress.
Note: a web search for "/sys/class/scsi_device" AND "device/state"
revealed several storage configuration guides. The instructions I found
in these guides tell users to write the value "running" or "offline" in
the SCSI device state sysfs attribute and no other values.
[mkp: typo]
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: James Smart <james.smart@broadcom.com>
Cc: Ewan D. Milne <emilne@redhat.com>
Cc: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-06-17 15:18:18 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2017-06-02 21:21:55 +00:00
|
|
|
mutex_lock(&sdev->state_mutex);
|
2021-11-05 22:10:48 +00:00
|
|
|
if (sdev->sdev_state == SDEV_RUNNING && state == SDEV_RUNNING) {
|
2021-11-20 16:49:17 +00:00
|
|
|
ret = 0;
|
2021-11-05 22:10:48 +00:00
|
|
|
} else {
|
|
|
|
ret = scsi_device_set_state(sdev, state);
|
|
|
|
if (ret == 0 && state == SDEV_RUNNING)
|
|
|
|
rescan_dev = true;
|
|
|
|
}
|
|
|
|
mutex_unlock(&sdev->state_mutex);
|
|
|
|
|
|
|
|
if (rescan_dev) {
|
|
|
|
/*
|
|
|
|
* If the device state changes to SDEV_RUNNING, we need to
|
|
|
|
* run the queue to avoid I/O hang, and rescan the device
|
|
|
|
* to revalidate it. Running the queue first is necessary
|
|
|
|
* because another thread may be waiting inside
|
|
|
|
* blk_mq_freeze_queue_wait() and because that call may be
|
|
|
|
* waiting for pending I/O to finish.
|
|
|
|
*/
|
2019-03-22 02:56:46 +00:00
|
|
|
blk_mq_run_hw_queues(sdev->request_queue, true);
|
2021-08-24 02:59:21 +00:00
|
|
|
scsi_rescan_device(dev);
|
2021-07-27 03:44:55 +00:00
|
|
|
}
|
2017-06-02 21:21:55 +00:00
|
|
|
|
|
|
|
return ret == 0 ? count : -EINVAL;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
2005-05-17 10:43:37 +00:00
|
|
|
show_state_field(struct device *dev, struct device_attribute *attr, char *buf)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
const char *name = scsi_device_state_name(sdev->sdev_state);
|
|
|
|
|
|
|
|
if (!name)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
return snprintf(buf, 20, "%s\n", name);
|
|
|
|
}
|
|
|
|
|
|
|
|
static DEVICE_ATTR(state, S_IRUGO | S_IWUSR, show_state_field, store_state_field);
|
|
|
|
|
|
|
|
static ssize_t
|
2008-02-21 23:13:36 +00:00
|
|
|
show_queue_type_field(struct device *dev, struct device_attribute *attr,
|
|
|
|
char *buf)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
const char *name = "none";
|
|
|
|
|
2014-10-30 10:54:58 +00:00
|
|
|
if (sdev->simple_tags)
|
2005-04-16 22:20:36 +00:00
|
|
|
name = "simple";
|
|
|
|
|
|
|
|
return snprintf(buf, 20, "%s\n", name);
|
|
|
|
}
|
|
|
|
|
2014-03-15 08:51:47 +00:00
|
|
|
static ssize_t
|
|
|
|
store_queue_type_field(struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
|
2014-11-24 14:36:18 +00:00
|
|
|
if (!sdev->tagged_supported)
|
2014-03-15 08:51:47 +00:00
|
|
|
return -EINVAL;
|
2014-11-24 14:36:18 +00:00
|
|
|
|
|
|
|
sdev_printk(KERN_INFO, sdev,
|
|
|
|
"ignoring write to deprecated queue_type attribute");
|
2014-03-15 08:51:47 +00:00
|
|
|
return count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static DEVICE_ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field,
|
|
|
|
store_queue_type_field);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2014-03-15 08:51:49 +00:00
|
|
|
#define sdev_vpd_pg_attr(_page) \
|
|
|
|
static ssize_t \
|
|
|
|
show_vpd_##_page(struct file *filp, struct kobject *kobj, \
|
|
|
|
struct bin_attribute *bin_attr, \
|
|
|
|
char *buf, loff_t off, size_t count) \
|
|
|
|
{ \
|
2020-02-25 10:04:11 +00:00
|
|
|
struct device *dev = kobj_to_dev(kobj); \
|
2014-03-15 08:51:49 +00:00
|
|
|
struct scsi_device *sdev = to_scsi_device(dev); \
|
2017-08-29 15:50:13 +00:00
|
|
|
struct scsi_vpd *vpd_page; \
|
|
|
|
int ret = -EINVAL; \
|
|
|
|
\
|
2015-11-09 12:24:28 +00:00
|
|
|
rcu_read_lock(); \
|
2017-08-29 15:50:13 +00:00
|
|
|
vpd_page = rcu_dereference(sdev->vpd_##_page); \
|
|
|
|
if (vpd_page) \
|
|
|
|
ret = memory_read_from_buffer(buf, count, &off, \
|
|
|
|
vpd_page->data, vpd_page->len); \
|
2015-11-09 12:24:28 +00:00
|
|
|
rcu_read_unlock(); \
|
2017-08-29 15:50:13 +00:00
|
|
|
return ret; \
|
2014-03-15 08:51:49 +00:00
|
|
|
} \
|
|
|
|
static struct bin_attribute dev_attr_vpd_##_page = { \
|
|
|
|
.attr = {.name = __stringify(vpd_##_page), .mode = S_IRUGO }, \
|
|
|
|
.size = 0, \
|
|
|
|
.read = show_vpd_##_page, \
|
|
|
|
};
|
|
|
|
|
|
|
|
sdev_vpd_pg_attr(pg83);
|
|
|
|
sdev_vpd_pg_attr(pg80);
|
2019-09-26 16:22:17 +00:00
|
|
|
sdev_vpd_pg_attr(pg89);
|
|
|
|
sdev_vpd_pg_attr(pg0);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2015-11-09 09:56:57 +00:00
|
|
|
static ssize_t show_inquiry(struct file *filep, struct kobject *kobj,
|
|
|
|
struct bin_attribute *bin_attr,
|
|
|
|
char *buf, loff_t off, size_t count)
|
|
|
|
{
|
2020-02-25 10:04:11 +00:00
|
|
|
struct device *dev = kobj_to_dev(kobj);
|
2015-11-09 09:56:57 +00:00
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
|
|
|
|
if (!sdev->inquiry)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
return memory_read_from_buffer(buf, count, &off, sdev->inquiry,
|
|
|
|
sdev->inquiry_len);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct bin_attribute dev_attr_inquiry = {
|
|
|
|
.attr = {
|
|
|
|
.name = "inquiry",
|
|
|
|
.mode = S_IRUGO,
|
|
|
|
},
|
|
|
|
.size = 0,
|
|
|
|
.read = show_inquiry,
|
|
|
|
};
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
static ssize_t
|
2014-03-15 08:51:49 +00:00
|
|
|
show_iostat_counterbits(struct device *dev, struct device_attribute *attr,
|
|
|
|
char *buf)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
return snprintf(buf, 20, "%d\n", (int)sizeof(atomic_t) * 8);
|
|
|
|
}
|
|
|
|
|
|
|
|
static DEVICE_ATTR(iocounterbits, S_IRUGO, show_iostat_counterbits, NULL);
|
|
|
|
|
|
|
|
#define show_sdev_iostat(field) \
|
|
|
|
static ssize_t \
|
2008-02-21 23:13:36 +00:00
|
|
|
show_iostat_##field(struct device *dev, struct device_attribute *attr, \
|
|
|
|
char *buf) \
|
2005-04-16 22:20:36 +00:00
|
|
|
{ \
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev); \
|
|
|
|
unsigned long long count = atomic_read(&sdev->field); \
|
|
|
|
return snprintf(buf, 20, "0x%llx\n", count); \
|
|
|
|
} \
|
|
|
|
static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL)
|
|
|
|
|
|
|
|
show_sdev_iostat(iorequest_cnt);
|
|
|
|
show_sdev_iostat(iodone_cnt);
|
|
|
|
show_sdev_iostat(ioerr_cnt);
|
|
|
|
|
[SCSI] modalias for scsi devices
The following patch adds support for sysfs/uevent modalias
attribute for scsi devices (like disks, tapes, cdroms etc),
based on whatever current sd.c, sr.c, st.c and osst.c drivers
supports.
The modalias format is like this:
scsi:type-0x04
(for TYPE_WORM, handled by sr.c now).
Several comments.
o This hexadecimal type value is because all TYPE_XXX constants
in include/scsi/scsi.h are given in hex, but __stringify() will
not convert them to decimal (so it will NOT be scsi:type-4).
Since it does not really matter in which format it is, while
both modalias in module and modalias attribute match each other,
I descided to go for that 0x%02x format (and added a comment in
include/scsi/scsi.h to keep them that way), instead of changing
them all to decimal.
o There was no .uevent routine for SCSI bus. It might be a good
idea to add some more ueven environment variables in there.
o osst.c driver handles tapes too, like st.c, but only SOME tapes.
With this setup, hotplug scripts (or whatever is used by the
user) will try to load both st and osst modules for all SCSI
tapes found, because both modules have scsi:type-0x01 alias).
It is not harmful, but one extra module is no good either.
It is possible to solve this, by exporting more info in
modalias attribute, including vendor and device identification
strings, so that modalias becomes something like
scsi:type-0x12:vendor-Adaptec LTD:device-OnStream Tape Drive
and having that, match for all 3 attributes, not only device
type. But oh well, vendor and device strings may be large,
and they do contain spaces and whatnot.
So I left them for now, awaiting for comments first.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-27 12:02:37 +00:00
|
|
|
static ssize_t
|
|
|
|
sdev_show_modalias(struct device *dev, struct device_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev;
|
|
|
|
sdev = to_scsi_device(dev);
|
|
|
|
return snprintf (buf, 20, SCSI_DEVICE_MODALIAS_FMT "\n", sdev->type);
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(modalias, S_IRUGO, sdev_show_modalias, NULL);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-10-29 21:15:22 +00:00
|
|
|
#define DECLARE_EVT_SHOW(name, Cap_name) \
|
|
|
|
static ssize_t \
|
|
|
|
sdev_show_evt_##name(struct device *dev, struct device_attribute *attr, \
|
2008-02-21 23:13:36 +00:00
|
|
|
char *buf) \
|
2007-10-29 21:15:22 +00:00
|
|
|
{ \
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev); \
|
|
|
|
int val = test_bit(SDEV_EVT_##Cap_name, sdev->supported_events);\
|
|
|
|
return snprintf(buf, 20, "%d\n", val); \
|
|
|
|
}
|
|
|
|
|
|
|
|
#define DECLARE_EVT_STORE(name, Cap_name) \
|
|
|
|
static ssize_t \
|
2008-02-21 23:13:36 +00:00
|
|
|
sdev_store_evt_##name(struct device *dev, struct device_attribute *attr,\
|
2007-10-29 21:15:22 +00:00
|
|
|
const char *buf, size_t count) \
|
|
|
|
{ \
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev); \
|
|
|
|
int val = simple_strtoul(buf, NULL, 0); \
|
|
|
|
if (val == 0) \
|
|
|
|
clear_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \
|
|
|
|
else if (val == 1) \
|
|
|
|
set_bit(SDEV_EVT_##Cap_name, sdev->supported_events); \
|
|
|
|
else \
|
|
|
|
return -EINVAL; \
|
|
|
|
return count; \
|
|
|
|
}
|
|
|
|
|
|
|
|
#define DECLARE_EVT(name, Cap_name) \
|
|
|
|
DECLARE_EVT_SHOW(name, Cap_name) \
|
|
|
|
DECLARE_EVT_STORE(name, Cap_name) \
|
|
|
|
static DEVICE_ATTR(evt_##name, S_IRUGO, sdev_show_evt_##name, \
|
|
|
|
sdev_store_evt_##name);
|
|
|
|
#define REF_EVT(name) &dev_attr_evt_##name.attr
|
|
|
|
|
|
|
|
DECLARE_EVT(media_change, MEDIA_CHANGE)
|
2013-08-08 19:07:48 +00:00
|
|
|
DECLARE_EVT(inquiry_change_reported, INQUIRY_CHANGE_REPORTED)
|
|
|
|
DECLARE_EVT(capacity_change_reported, CAPACITY_CHANGE_REPORTED)
|
|
|
|
DECLARE_EVT(soft_threshold_reached, SOFT_THRESHOLD_REACHED_REPORTED)
|
|
|
|
DECLARE_EVT(mode_parameter_change_reported, MODE_PARAMETER_CHANGE_REPORTED)
|
|
|
|
DECLARE_EVT(lun_change_reported, LUN_CHANGE_REPORTED)
|
2007-10-29 21:15:22 +00:00
|
|
|
|
2008-02-21 23:13:36 +00:00
|
|
|
static ssize_t
|
2014-03-15 08:51:47 +00:00
|
|
|
sdev_store_queue_depth(struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
int depth, retval;
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
struct scsi_host_template *sht = sdev->host->hostt;
|
|
|
|
|
|
|
|
if (!sht->change_queue_depth)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
depth = simple_strtoul(buf, NULL, 0);
|
|
|
|
|
2015-07-13 14:24:39 +00:00
|
|
|
if (depth < 1 || depth > sdev->host->can_queue)
|
2005-04-16 22:20:36 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
2014-11-13 14:08:42 +00:00
|
|
|
retval = sht->change_queue_depth(sdev, depth);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (retval < 0)
|
|
|
|
return retval;
|
|
|
|
|
2009-10-22 22:46:33 +00:00
|
|
|
sdev->max_queue_depth = sdev->queue_depth;
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return count;
|
|
|
|
}
|
2014-03-15 08:51:47 +00:00
|
|
|
sdev_show_function(queue_depth, "%d\n");
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2014-03-15 08:51:47 +00:00
|
|
|
static DEVICE_ATTR(queue_depth, S_IRUGO | S_IWUSR, sdev_show_queue_depth,
|
|
|
|
sdev_store_queue_depth);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2015-12-01 09:16:56 +00:00
|
|
|
static ssize_t
|
|
|
|
sdev_show_wwid(struct device *dev, struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
ssize_t count;
|
|
|
|
|
|
|
|
count = scsi_vpd_lun_id(sdev, buf, PAGE_SIZE);
|
|
|
|
if (count > 0) {
|
|
|
|
buf[count] = '\n';
|
|
|
|
count++;
|
|
|
|
}
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(wwid, S_IRUGO, sdev_show_wwid, NULL);
|
|
|
|
|
2017-12-12 18:23:28 +00:00
|
|
|
#define BLIST_FLAG_NAME(name) \
|
2018-04-17 23:35:08 +00:00
|
|
|
[const_ilog2((__force __u64)BLIST_##name)] = #name
|
2017-10-02 14:26:34 +00:00
|
|
|
static const char *const sdev_bflags_name[] = {
|
|
|
|
#include "scsi_devinfo_tbl.c"
|
|
|
|
};
|
|
|
|
#undef BLIST_FLAG_NAME
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
sdev_show_blacklist(struct device *dev, struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
int i;
|
|
|
|
ssize_t len = 0;
|
|
|
|
|
|
|
|
for (i = 0; i < sizeof(sdev->sdev_bflags) * BITS_PER_BYTE; i++) {
|
|
|
|
const char *name = NULL;
|
|
|
|
|
2017-12-12 18:23:28 +00:00
|
|
|
if (!(sdev->sdev_bflags & (__force blist_flags_t)BIT(i)))
|
2017-10-02 14:26:34 +00:00
|
|
|
continue;
|
|
|
|
if (i < ARRAY_SIZE(sdev_bflags_name) && sdev_bflags_name[i])
|
|
|
|
name = sdev_bflags_name[i];
|
|
|
|
|
|
|
|
if (name)
|
2020-03-15 09:42:40 +00:00
|
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
|
|
"%s%s", len ? " " : "", name);
|
2017-10-02 14:26:34 +00:00
|
|
|
else
|
2020-03-15 09:42:40 +00:00
|
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
|
|
"%sINVALID_BIT(%d)", len ? " " : "", i);
|
2017-10-02 14:26:34 +00:00
|
|
|
}
|
|
|
|
if (len)
|
2020-03-15 09:42:40 +00:00
|
|
|
len += scnprintf(buf + len, PAGE_SIZE - len, "\n");
|
2017-10-02 14:26:34 +00:00
|
|
|
return len;
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(blacklist, S_IRUGO, sdev_show_blacklist, NULL);
|
|
|
|
|
2015-12-01 09:16:41 +00:00
|
|
|
#ifdef CONFIG_SCSI_DH
|
|
|
|
static ssize_t
|
|
|
|
sdev_show_dh_state(struct device *dev, struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
|
|
|
|
if (!sdev->handler)
|
|
|
|
return snprintf(buf, 20, "detached\n");
|
|
|
|
|
|
|
|
return snprintf(buf, 20, "%s\n", sdev->handler->name);
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
sdev_store_dh_state(struct device *dev, struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
int err = -EINVAL;
|
|
|
|
|
|
|
|
if (sdev->sdev_state == SDEV_CANCEL ||
|
|
|
|
sdev->sdev_state == SDEV_DEL)
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
if (!sdev->handler) {
|
|
|
|
/*
|
|
|
|
* Attach to a device handler
|
|
|
|
*/
|
|
|
|
err = scsi_dh_attach(sdev->request_queue, buf);
|
|
|
|
} else if (!strncmp(buf, "activate", 8)) {
|
|
|
|
/*
|
|
|
|
* Activate a device handler
|
|
|
|
*/
|
|
|
|
if (sdev->handler->activate)
|
|
|
|
err = sdev->handler->activate(sdev, NULL, NULL);
|
|
|
|
else
|
|
|
|
err = 0;
|
|
|
|
} else if (!strncmp(buf, "detach", 6)) {
|
|
|
|
/*
|
|
|
|
* Detach from a device handler
|
|
|
|
*/
|
|
|
|
sdev_printk(KERN_WARNING, sdev,
|
|
|
|
"can't detach handler %s.\n",
|
|
|
|
sdev->handler->name);
|
|
|
|
err = -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return err < 0 ? err : count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static DEVICE_ATTR(dh_state, S_IRUGO | S_IWUSR, sdev_show_dh_state,
|
|
|
|
sdev_store_dh_state);
|
2016-03-03 06:54:07 +00:00
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
sdev_show_access_state(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
unsigned char access_state;
|
|
|
|
const char *access_state_name;
|
|
|
|
|
|
|
|
if (!sdev->handler)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
access_state = (sdev->access_state & SCSI_ACCESS_STATE_MASK);
|
|
|
|
access_state_name = scsi_access_state_name(access_state);
|
|
|
|
|
|
|
|
return sprintf(buf, "%s\n",
|
|
|
|
access_state_name ? access_state_name : "unknown");
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(access_state, S_IRUGO, sdev_show_access_state, NULL);
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
sdev_show_preferred_path(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
|
|
|
|
if (!sdev->handler)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (sdev->access_state & SCSI_ACCESS_STATE_PREFERRED)
|
|
|
|
return sprintf(buf, "1\n");
|
|
|
|
else
|
|
|
|
return sprintf(buf, "0\n");
|
|
|
|
}
|
|
|
|
static DEVICE_ATTR(preferred_path, S_IRUGO, sdev_show_preferred_path, NULL);
|
2015-12-01 09:16:41 +00:00
|
|
|
#endif
|
|
|
|
|
2009-10-22 22:46:33 +00:00
|
|
|
static ssize_t
|
|
|
|
sdev_show_queue_ramp_up_period(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev;
|
|
|
|
sdev = to_scsi_device(dev);
|
|
|
|
return snprintf(buf, 20, "%u\n",
|
|
|
|
jiffies_to_msecs(sdev->queue_ramp_up_period));
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t
|
|
|
|
sdev_store_queue_ramp_up_period(struct device *dev,
|
|
|
|
struct device_attribute *attr,
|
|
|
|
const char *buf, size_t count)
|
|
|
|
{
|
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
2014-08-08 21:24:05 +00:00
|
|
|
unsigned int period;
|
2009-10-22 22:46:33 +00:00
|
|
|
|
2014-08-08 21:24:05 +00:00
|
|
|
if (kstrtouint(buf, 10, &period))
|
2009-10-22 22:46:33 +00:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
sdev->queue_ramp_up_period = msecs_to_jiffies(period);
|
2015-10-26 14:54:23 +00:00
|
|
|
return count;
|
2009-10-22 22:46:33 +00:00
|
|
|
}
|
|
|
|
|
2014-03-15 08:51:47 +00:00
|
|
|
static DEVICE_ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR,
|
|
|
|
sdev_show_queue_ramp_up_period,
|
|
|
|
sdev_store_queue_ramp_up_period);
|
2009-10-22 22:46:33 +00:00
|
|
|
|
2014-03-15 08:51:47 +00:00
|
|
|
static umode_t scsi_sdev_attr_is_visible(struct kobject *kobj,
|
|
|
|
struct attribute *attr, int i)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2020-02-25 10:04:11 +00:00
|
|
|
struct device *dev = kobj_to_dev(kobj);
|
2005-04-16 22:20:36 +00:00
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
|
|
|
|
|
2014-03-15 08:51:47 +00:00
|
|
|
if (attr == &dev_attr_queue_depth.attr &&
|
|
|
|
!sdev->host->hostt->change_queue_depth)
|
|
|
|
return S_IRUGO;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2014-03-15 08:51:47 +00:00
|
|
|
if (attr == &dev_attr_queue_ramp_up_period.attr &&
|
|
|
|
!sdev->host->hostt->change_queue_depth)
|
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2016-03-03 06:54:07 +00:00
|
|
|
#ifdef CONFIG_SCSI_DH
|
|
|
|
if (attr == &dev_attr_access_state.attr &&
|
|
|
|
!sdev->handler)
|
|
|
|
return 0;
|
|
|
|
if (attr == &dev_attr_preferred_path.attr &&
|
|
|
|
!sdev->handler)
|
|
|
|
return 0;
|
|
|
|
#endif
|
2014-03-15 08:51:47 +00:00
|
|
|
return attr->mode;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2016-03-03 06:41:24 +00:00
|
|
|
static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj,
|
|
|
|
struct bin_attribute *attr, int i)
|
|
|
|
{
|
2020-02-25 10:04:11 +00:00
|
|
|
struct device *dev = kobj_to_dev(kobj);
|
2016-03-03 06:41:24 +00:00
|
|
|
struct scsi_device *sdev = to_scsi_device(dev);
|
|
|
|
|
|
|
|
|
2019-09-26 16:22:17 +00:00
|
|
|
if (attr == &dev_attr_vpd_pg0 && !sdev->vpd_pg0)
|
|
|
|
return 0;
|
|
|
|
|
2016-03-03 06:41:24 +00:00
|
|
|
if (attr == &dev_attr_vpd_pg80 && !sdev->vpd_pg80)
|
|
|
|
return 0;
|
|
|
|
|
2016-03-10 10:25:26 +00:00
|
|
|
if (attr == &dev_attr_vpd_pg83 && !sdev->vpd_pg83)
|
2016-03-03 06:41:24 +00:00
|
|
|
return 0;
|
|
|
|
|
2019-09-26 16:22:17 +00:00
|
|
|
if (attr == &dev_attr_vpd_pg89 && !sdev->vpd_pg89)
|
|
|
|
return 0;
|
|
|
|
|
2016-03-03 06:41:24 +00:00
|
|
|
return S_IRUGO;
|
|
|
|
}
|
|
|
|
|
2014-03-15 08:51:47 +00:00
|
|
|
/* Default template for device attributes. May NOT be modified */
|
|
|
|
static struct attribute *scsi_sdev_attrs[] = {
|
|
|
|
&dev_attr_device_blocked.attr,
|
|
|
|
&dev_attr_type.attr,
|
|
|
|
&dev_attr_scsi_level.attr,
|
|
|
|
&dev_attr_device_busy.attr,
|
|
|
|
&dev_attr_vendor.attr,
|
|
|
|
&dev_attr_model.attr,
|
|
|
|
&dev_attr_rev.attr,
|
|
|
|
&dev_attr_rescan.attr,
|
|
|
|
&dev_attr_delete.attr,
|
|
|
|
&dev_attr_state.attr,
|
|
|
|
&dev_attr_timeout.attr,
|
|
|
|
&dev_attr_eh_timeout.attr,
|
|
|
|
&dev_attr_iocounterbits.attr,
|
|
|
|
&dev_attr_iorequest_cnt.attr,
|
|
|
|
&dev_attr_iodone_cnt.attr,
|
|
|
|
&dev_attr_ioerr_cnt.attr,
|
|
|
|
&dev_attr_modalias.attr,
|
|
|
|
&dev_attr_queue_depth.attr,
|
|
|
|
&dev_attr_queue_type.attr,
|
2015-12-01 09:16:56 +00:00
|
|
|
&dev_attr_wwid.attr,
|
2017-10-02 14:26:34 +00:00
|
|
|
&dev_attr_blacklist.attr,
|
2015-12-01 09:16:41 +00:00
|
|
|
#ifdef CONFIG_SCSI_DH
|
|
|
|
&dev_attr_dh_state.attr,
|
2016-03-03 06:54:07 +00:00
|
|
|
&dev_attr_access_state.attr,
|
|
|
|
&dev_attr_preferred_path.attr,
|
2015-12-01 09:16:41 +00:00
|
|
|
#endif
|
2014-03-15 08:51:47 +00:00
|
|
|
&dev_attr_queue_ramp_up_period.attr,
|
|
|
|
REF_EVT(media_change),
|
|
|
|
REF_EVT(inquiry_change_reported),
|
|
|
|
REF_EVT(capacity_change_reported),
|
|
|
|
REF_EVT(soft_threshold_reached),
|
|
|
|
REF_EVT(mode_parameter_change_reported),
|
|
|
|
REF_EVT(lun_change_reported),
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
2014-03-15 08:51:49 +00:00
|
|
|
static struct bin_attribute *scsi_sdev_bin_attrs[] = {
|
2019-09-26 16:22:17 +00:00
|
|
|
&dev_attr_vpd_pg0,
|
2014-03-15 08:51:49 +00:00
|
|
|
&dev_attr_vpd_pg83,
|
|
|
|
&dev_attr_vpd_pg80,
|
2019-09-26 16:22:17 +00:00
|
|
|
&dev_attr_vpd_pg89,
|
2015-11-09 09:56:57 +00:00
|
|
|
&dev_attr_inquiry,
|
2014-03-15 08:51:49 +00:00
|
|
|
NULL
|
|
|
|
};
|
2014-03-15 08:51:47 +00:00
|
|
|
static struct attribute_group scsi_sdev_attr_group = {
|
|
|
|
.attrs = scsi_sdev_attrs,
|
2014-03-15 08:51:49 +00:00
|
|
|
.bin_attrs = scsi_sdev_bin_attrs,
|
2014-03-15 08:51:47 +00:00
|
|
|
.is_visible = scsi_sdev_attr_is_visible,
|
2016-03-03 06:41:24 +00:00
|
|
|
.is_bin_visible = scsi_sdev_bin_attr_is_visible,
|
2014-03-15 08:51:47 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
static const struct attribute_group *scsi_sdev_attr_groups[] = {
|
|
|
|
&scsi_sdev_attr_group,
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
2008-03-23 03:42:27 +00:00
|
|
|
static int scsi_target_add(struct scsi_target *starget)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if (starget->state != STARGET_CREATED)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
error = device_add(&starget->dev);
|
|
|
|
if (error) {
|
|
|
|
dev_err(&starget->dev, "target device_add failed, error %d\n", error);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
transport_add_device(&starget->dev);
|
|
|
|
starget->state = STARGET_RUNNING;
|
|
|
|
|
[SCSI] implement runtime Power Management
This patch (as1398b) adds runtime PM support to the SCSI layer. Only
the machanism is provided; use of it is up to the various high-level
drivers, and the patch doesn't change any of them. Except for sg --
the patch expicitly prevents a device from being runtime-suspended
while its sg device file is open.
The implementation is simplistic. In general, hosts and targets are
automatically suspended when all their children are asleep, but for
them the runtime-suspend code doesn't actually do anything. (A host's
runtime PM status is propagated up the device tree, though, so a
runtime-PM-aware lower-level driver could power down the host adapter
hardware at the appropriate times.) There are comments indicating
where a transport class might be notified or some other hooks added.
LUNs are runtime-suspended by calling the drivers' existing suspend
handlers (and likewise for runtime-resume). Somewhat arbitrarily, the
implementation delays for 100 ms before suspending an eligible LUN.
This is because there typically are occasions during bootup when the
same device file is opened and closed several times in quick
succession.
The way this all works is that the SCSI core increments a device's
PM-usage count when it is registered. If a high-level driver does
nothing then the device will not be eligible for runtime-suspend
because of the elevated usage count. If a high-level driver wants to
use runtime PM then it can call scsi_autopm_put_device() in its probe
routine to decrement the usage count and scsi_autopm_get_device() in
its remove routine to restore the original count.
Hosts, targets, and LUNs are not suspended while they are being probed
or removed, or while the error handler is running. In fact, a fairly
large part of the patch consists of code to make sure that things
aren't suspended at such times.
[jejb: fix up compile issues in PM config variations]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-06-17 14:41:42 +00:00
|
|
|
pm_runtime_set_active(&starget->dev);
|
|
|
|
pm_runtime_enable(&starget->dev);
|
|
|
|
device_enable_async_suspend(&starget->dev);
|
|
|
|
|
2008-03-23 03:42:27 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/**
|
|
|
|
* scsi_sysfs_add_sdev - add scsi device to sysfs
|
|
|
|
* @sdev: scsi_device to add
|
|
|
|
*
|
|
|
|
* Return value:
|
|
|
|
* 0 on Success / non-zero on Failure
|
|
|
|
**/
|
|
|
|
int scsi_sysfs_add_sdev(struct scsi_device *sdev)
|
|
|
|
{
|
2021-10-12 23:35:13 +00:00
|
|
|
int error;
|
2008-03-23 03:42:27 +00:00
|
|
|
struct scsi_target *starget = sdev->sdev_target;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-03-23 03:42:27 +00:00
|
|
|
error = scsi_target_add(starget);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
transport_configure_device(&starget->dev);
|
[SCSI] implement runtime Power Management
This patch (as1398b) adds runtime PM support to the SCSI layer. Only
the machanism is provided; use of it is up to the various high-level
drivers, and the patch doesn't change any of them. Except for sg --
the patch expicitly prevents a device from being runtime-suspended
while its sg device file is open.
The implementation is simplistic. In general, hosts and targets are
automatically suspended when all their children are asleep, but for
them the runtime-suspend code doesn't actually do anything. (A host's
runtime PM status is propagated up the device tree, though, so a
runtime-PM-aware lower-level driver could power down the host adapter
hardware at the appropriate times.) There are comments indicating
where a transport class might be notified or some other hooks added.
LUNs are runtime-suspended by calling the drivers' existing suspend
handlers (and likewise for runtime-resume). Somewhat arbitrarily, the
implementation delays for 100 ms before suspending an eligible LUN.
This is because there typically are occasions during bootup when the
same device file is opened and closed several times in quick
succession.
The way this all works is that the SCSI core increments a device's
PM-usage count when it is registered. If a high-level driver does
nothing then the device will not be eligible for runtime-suspend
because of the elevated usage count. If a high-level driver wants to
use runtime PM then it can call scsi_autopm_put_device() in its probe
routine to decrement the usage count and scsi_autopm_get_device() in
its remove routine to restore the original count.
Hosts, targets, and LUNs are not suspended while they are being probed
or removed, or while the error handler is running. In fact, a fairly
large part of the patch consists of code to make sure that things
aren't suspended at such times.
[jejb: fix up compile issues in PM config variations]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-06-17 14:41:42 +00:00
|
|
|
|
2010-02-08 18:18:26 +00:00
|
|
|
device_enable_async_suspend(&sdev->sdev_gendev);
|
[SCSI] implement runtime Power Management
This patch (as1398b) adds runtime PM support to the SCSI layer. Only
the machanism is provided; use of it is up to the various high-level
drivers, and the patch doesn't change any of them. Except for sg --
the patch expicitly prevents a device from being runtime-suspended
while its sg device file is open.
The implementation is simplistic. In general, hosts and targets are
automatically suspended when all their children are asleep, but for
them the runtime-suspend code doesn't actually do anything. (A host's
runtime PM status is propagated up the device tree, though, so a
runtime-PM-aware lower-level driver could power down the host adapter
hardware at the appropriate times.) There are comments indicating
where a transport class might be notified or some other hooks added.
LUNs are runtime-suspended by calling the drivers' existing suspend
handlers (and likewise for runtime-resume). Somewhat arbitrarily, the
implementation delays for 100 ms before suspending an eligible LUN.
This is because there typically are occasions during bootup when the
same device file is opened and closed several times in quick
succession.
The way this all works is that the SCSI core increments a device's
PM-usage count when it is registered. If a high-level driver does
nothing then the device will not be eligible for runtime-suspend
because of the elevated usage count. If a high-level driver wants to
use runtime PM then it can call scsi_autopm_put_device() in its probe
routine to decrement the usage count and scsi_autopm_get_device() in
its remove routine to restore the original count.
Hosts, targets, and LUNs are not suspended while they are being probed
or removed, or while the error handler is running. In fact, a fairly
large part of the patch consists of code to make sure that things
aren't suspended at such times.
[jejb: fix up compile issues in PM config variations]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-06-17 14:41:42 +00:00
|
|
|
scsi_autopm_get_target(starget);
|
|
|
|
pm_runtime_set_active(&sdev->sdev_gendev);
|
2019-09-16 15:56:49 +00:00
|
|
|
if (!sdev->rpm_autosuspend)
|
|
|
|
pm_runtime_forbid(&sdev->sdev_gendev);
|
[SCSI] implement runtime Power Management
This patch (as1398b) adds runtime PM support to the SCSI layer. Only
the machanism is provided; use of it is up to the various high-level
drivers, and the patch doesn't change any of them. Except for sg --
the patch expicitly prevents a device from being runtime-suspended
while its sg device file is open.
The implementation is simplistic. In general, hosts and targets are
automatically suspended when all their children are asleep, but for
them the runtime-suspend code doesn't actually do anything. (A host's
runtime PM status is propagated up the device tree, though, so a
runtime-PM-aware lower-level driver could power down the host adapter
hardware at the appropriate times.) There are comments indicating
where a transport class might be notified or some other hooks added.
LUNs are runtime-suspended by calling the drivers' existing suspend
handlers (and likewise for runtime-resume). Somewhat arbitrarily, the
implementation delays for 100 ms before suspending an eligible LUN.
This is because there typically are occasions during bootup when the
same device file is opened and closed several times in quick
succession.
The way this all works is that the SCSI core increments a device's
PM-usage count when it is registered. If a high-level driver does
nothing then the device will not be eligible for runtime-suspend
because of the elevated usage count. If a high-level driver wants to
use runtime PM then it can call scsi_autopm_put_device() in its probe
routine to decrement the usage count and scsi_autopm_get_device() in
its remove routine to restore the original count.
Hosts, targets, and LUNs are not suspended while they are being probed
or removed, or while the error handler is running. In fact, a fairly
large part of the patch consists of code to make sure that things
aren't suspended at such times.
[jejb: fix up compile issues in PM config variations]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-06-17 14:41:42 +00:00
|
|
|
pm_runtime_enable(&sdev->sdev_gendev);
|
|
|
|
scsi_autopm_put_target(starget);
|
|
|
|
|
|
|
|
scsi_autopm_get_device(sdev);
|
|
|
|
|
2017-09-20 07:18:52 +00:00
|
|
|
scsi_dh_add_device(sdev);
|
2015-08-27 12:16:57 +00:00
|
|
|
|
2016-03-03 06:54:12 +00:00
|
|
|
error = device_add(&sdev->sdev_gendev);
|
|
|
|
if (error) {
|
|
|
|
sdev_printk(KERN_INFO, sdev,
|
|
|
|
"failed to add device: %d\n", error);
|
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
2010-02-08 18:18:26 +00:00
|
|
|
device_enable_async_suspend(&sdev->sdev_dev);
|
2008-02-21 23:13:36 +00:00
|
|
|
error = device_add(&sdev->sdev_dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (error) {
|
2010-11-15 21:03:04 +00:00
|
|
|
sdev_printk(KERN_INFO, sdev,
|
|
|
|
"failed to add class device: %d\n", error);
|
2009-11-19 22:48:29 +00:00
|
|
|
device_del(&sdev->sdev_gendev);
|
2010-02-12 17:13:55 +00:00
|
|
|
return error;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2009-11-19 22:48:29 +00:00
|
|
|
transport_add_device(&sdev->sdev_gendev);
|
|
|
|
sdev->is_visible = 1;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2021-07-29 06:48:42 +00:00
|
|
|
if (IS_ENABLED(CONFIG_BLK_DEV_BSG)) {
|
|
|
|
sdev->bsg_dev = scsi_bsg_register_queue(sdev);
|
|
|
|
if (IS_ERR(sdev->bsg_dev)) {
|
|
|
|
/*
|
|
|
|
* We're treating error on bsg register as non-fatal, so
|
|
|
|
* pretend nothing went wrong.
|
|
|
|
*/
|
2021-10-22 01:02:01 +00:00
|
|
|
error = PTR_ERR(sdev->bsg_dev);
|
2021-07-29 06:48:42 +00:00
|
|
|
sdev_printk(KERN_INFO, sdev,
|
|
|
|
"Failed to register bsg queue, errno=%d\n",
|
|
|
|
error);
|
|
|
|
sdev->bsg_dev = NULL;
|
|
|
|
}
|
|
|
|
}
|
2007-07-19 15:15:10 +00:00
|
|
|
|
2014-09-10 11:54:09 +00:00
|
|
|
scsi_autopm_put_device(sdev);
|
2005-04-16 22:20:36 +00:00
|
|
|
return error;
|
|
|
|
}
|
|
|
|
|
2005-07-26 14:20:53 +00:00
|
|
|
void __scsi_remove_device(struct scsi_device *sdev)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-11-06 17:47:08 +00:00
|
|
|
struct device *dev = &sdev->sdev_gendev;
|
2017-06-02 21:21:55 +00:00
|
|
|
int res;
|
2005-11-06 17:47:08 +00:00
|
|
|
|
2015-11-19 13:02:19 +00:00
|
|
|
/*
|
|
|
|
* This cleanup path is not reentrant and while it is impossible
|
|
|
|
* to get a new reference with scsi_device_get() someone can still
|
|
|
|
* hold a previously acquired one.
|
|
|
|
*/
|
|
|
|
if (sdev->sdev_state == SDEV_DEL)
|
|
|
|
return;
|
|
|
|
|
2009-11-19 22:48:29 +00:00
|
|
|
if (sdev->is_visible) {
|
2017-06-02 21:21:55 +00:00
|
|
|
/*
|
|
|
|
* If scsi_internal_target_block() is running concurrently,
|
|
|
|
* wait until it has finished before changing the device state.
|
|
|
|
*/
|
|
|
|
mutex_lock(&sdev->state_mutex);
|
2017-06-02 21:21:57 +00:00
|
|
|
/*
|
|
|
|
* If blocked, we go straight to DEL and restart the queue so
|
|
|
|
* any commands issued during driver shutdown (like sync
|
|
|
|
* cache) are errored immediately.
|
|
|
|
*/
|
2017-06-02 21:21:55 +00:00
|
|
|
res = scsi_device_set_state(sdev, SDEV_CANCEL);
|
2017-06-02 21:21:57 +00:00
|
|
|
if (res != 0) {
|
|
|
|
res = scsi_device_set_state(sdev, SDEV_DEL);
|
|
|
|
if (res == 0)
|
|
|
|
scsi_start_queue(sdev);
|
|
|
|
}
|
2017-06-02 21:21:55 +00:00
|
|
|
mutex_unlock(&sdev->state_mutex);
|
|
|
|
|
|
|
|
if (res != 0)
|
2009-11-19 22:48:29 +00:00
|
|
|
return;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2021-07-29 06:48:42 +00:00
|
|
|
if (IS_ENABLED(CONFIG_BLK_DEV_BSG) && sdev->bsg_dev)
|
|
|
|
bsg_unregister_queue(sdev->bsg_dev);
|
2009-11-19 22:48:29 +00:00
|
|
|
device_unregister(&sdev->sdev_dev);
|
|
|
|
transport_remove_device(dev);
|
2015-11-20 22:11:01 +00:00
|
|
|
device_del(dev);
|
|
|
|
} else
|
|
|
|
put_device(&sdev->sdev_dev);
|
2012-06-29 15:36:07 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Stop accepting new requests and wait until all queuecommand() and
|
|
|
|
* scsi_run_queue() invocations have finished before tearing down the
|
|
|
|
* device.
|
|
|
|
*/
|
2017-06-02 21:21:55 +00:00
|
|
|
mutex_lock(&sdev->state_mutex);
|
2005-04-16 22:20:36 +00:00
|
|
|
scsi_device_set_state(sdev, SDEV_DEL);
|
2017-06-02 21:21:55 +00:00
|
|
|
mutex_unlock(&sdev->state_mutex);
|
|
|
|
|
2012-06-29 15:36:07 +00:00
|
|
|
blk_cleanup_queue(sdev->request_queue);
|
|
|
|
cancel_work_sync(&sdev->requeue_work);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
if (sdev->host->hostt->slave_destroy)
|
|
|
|
sdev->host->hostt->slave_destroy(sdev);
|
2005-11-06 17:47:08 +00:00
|
|
|
transport_destroy_device(dev);
|
2011-04-22 15:39:59 +00:00
|
|
|
|
2014-01-21 15:00:50 +00:00
|
|
|
/*
|
|
|
|
* Paired with the kref_get() in scsi_sysfs_initialize(). We have
|
2021-03-26 06:09:02 +00:00
|
|
|
* removed sysfs visibility from the device, so make the target
|
2014-01-21 15:00:50 +00:00
|
|
|
* invisible if this was the last device underneath it.
|
|
|
|
*/
|
|
|
|
scsi_target_reap(scsi_target(sdev));
|
|
|
|
|
2005-11-06 17:47:08 +00:00
|
|
|
put_device(dev);
|
2005-07-26 14:20:53 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* scsi_remove_device - unregister a device from the scsi bus
|
|
|
|
* @sdev: scsi_device to unregister
|
|
|
|
**/
|
|
|
|
void scsi_remove_device(struct scsi_device *sdev)
|
|
|
|
{
|
2005-09-16 01:52:51 +00:00
|
|
|
struct Scsi_Host *shost = sdev->host;
|
|
|
|
|
2006-01-11 12:16:10 +00:00
|
|
|
mutex_lock(&shost->scan_mutex);
|
2005-07-26 14:20:53 +00:00
|
|
|
__scsi_remove_device(sdev);
|
2006-01-11 12:16:10 +00:00
|
|
|
mutex_unlock(&shost->scan_mutex);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(scsi_remove_device);
|
|
|
|
|
2007-07-09 18:59:59 +00:00
|
|
|
static void __scsi_remove_target(struct scsi_target *starget)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
|
|
|
|
unsigned long flags;
|
2005-07-26 14:27:10 +00:00
|
|
|
struct scsi_device *sdev;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
2005-07-26 14:27:10 +00:00
|
|
|
restart:
|
|
|
|
list_for_each_entry(sdev, &shost->__devices, siblings) {
|
2017-10-04 08:28:56 +00:00
|
|
|
/*
|
|
|
|
* We cannot call scsi_device_get() here, as
|
|
|
|
* we might've been called from rmmod() causing
|
|
|
|
* scsi_device_get() to fail the module_is_live()
|
|
|
|
* check.
|
|
|
|
*/
|
2005-04-16 22:20:36 +00:00
|
|
|
if (sdev->channel != starget->channel ||
|
2017-12-13 13:21:37 +00:00
|
|
|
sdev->id != starget->id)
|
|
|
|
continue;
|
|
|
|
if (sdev->sdev_state == SDEV_DEL ||
|
|
|
|
sdev->sdev_state == SDEV_CANCEL ||
|
2017-10-04 08:28:56 +00:00
|
|
|
!get_device(&sdev->sdev_gendev))
|
2005-04-16 22:20:36 +00:00
|
|
|
continue;
|
|
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
|
|
scsi_remove_device(sdev);
|
2017-10-04 08:28:56 +00:00
|
|
|
put_device(&sdev->sdev_gendev);
|
2005-04-16 22:20:36 +00:00
|
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
2005-07-26 14:27:10 +00:00
|
|
|
goto restart;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
2005-03-25 03:03:59 +00:00
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/**
|
|
|
|
* scsi_remove_target - try to remove a target and all its devices
|
|
|
|
* @dev: generic starget or parent of generic stargets to be removed
|
|
|
|
*
|
|
|
|
* Note: This is slightly racy. It is possible that if the user
|
|
|
|
* requests the addition of another device then the target won't be
|
|
|
|
* removed.
|
|
|
|
*/
|
|
|
|
void scsi_remove_target(struct device *dev)
|
|
|
|
{
|
2012-06-22 06:47:28 +00:00
|
|
|
struct Scsi_Host *shost = dev_to_shost(dev->parent);
|
2016-04-05 09:50:45 +00:00
|
|
|
struct scsi_target *starget;
|
2012-06-22 06:47:28 +00:00
|
|
|
unsigned long flags;
|
|
|
|
|
2015-10-19 14:35:46 +00:00
|
|
|
restart:
|
2012-06-22 06:47:28 +00:00
|
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
|
|
list_for_each_entry(starget, &shost->__targets, siblings) {
|
2016-02-10 16:03:26 +00:00
|
|
|
if (starget->state == STARGET_DEL ||
|
2017-06-27 18:55:58 +00:00
|
|
|
starget->state == STARGET_REMOVE ||
|
|
|
|
starget->state == STARGET_CREATED_REMOVE)
|
2012-06-22 06:47:28 +00:00
|
|
|
continue;
|
|
|
|
if (starget->dev.parent == dev || &starget->dev == dev) {
|
2014-01-21 15:00:50 +00:00
|
|
|
kref_get(&starget->reap_ref);
|
2017-06-27 18:55:58 +00:00
|
|
|
if (starget->state == STARGET_CREATED)
|
|
|
|
starget->state = STARGET_CREATED_REMOVE;
|
|
|
|
else
|
|
|
|
starget->state = STARGET_REMOVE;
|
2012-08-29 05:12:10 +00:00
|
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
|
|
|
__scsi_remove_target(starget);
|
2015-10-19 14:35:46 +00:00
|
|
|
scsi_target_reap(starget);
|
|
|
|
goto restart;
|
2012-06-22 06:47:28 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2012-06-22 06:47:28 +00:00
|
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(scsi_remove_target);
|
|
|
|
|
|
|
|
int scsi_register_driver(struct device_driver *drv)
|
|
|
|
{
|
|
|
|
drv->bus = &scsi_bus_type;
|
|
|
|
|
|
|
|
return driver_register(drv);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(scsi_register_driver);
|
|
|
|
|
|
|
|
int scsi_register_interface(struct class_interface *intf)
|
|
|
|
{
|
|
|
|
intf->class = &sdev_class;
|
|
|
|
|
|
|
|
return class_interface_register(intf);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(scsi_register_interface);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* scsi_sysfs_add_host - add scsi host to subsystem
|
|
|
|
* @shost: scsi host struct to add to subsystem
|
|
|
|
**/
|
|
|
|
int scsi_sysfs_add_host(struct Scsi_Host *shost)
|
|
|
|
{
|
|
|
|
transport_register_device(&shost->shost_gendev);
|
2008-01-05 15:38:30 +00:00
|
|
|
transport_configure_device(&shost->shost_gendev);
|
2005-04-16 22:20:36 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-09-11 15:00:14 +00:00
|
|
|
static struct device_type scsi_dev_type = {
|
|
|
|
.name = "scsi_device",
|
|
|
|
.release = scsi_device_dev_release,
|
|
|
|
.groups = scsi_sdev_attr_groups,
|
|
|
|
};
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
void scsi_sysfs_device_initialize(struct scsi_device *sdev)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
struct Scsi_Host *shost = sdev->host;
|
2021-10-12 23:35:13 +00:00
|
|
|
struct scsi_host_template *hostt = shost->hostt;
|
2005-04-16 22:20:36 +00:00
|
|
|
struct scsi_target *starget = sdev->sdev_target;
|
|
|
|
|
|
|
|
device_initialize(&sdev->sdev_gendev);
|
|
|
|
sdev->sdev_gendev.bus = &scsi_bus_type;
|
2007-09-11 15:00:14 +00:00
|
|
|
sdev->sdev_gendev.type = &scsi_dev_type;
|
2021-10-06 21:54:51 +00:00
|
|
|
scsi_enable_async_suspend(&sdev->sdev_gendev);
|
2014-06-25 13:27:36 +00:00
|
|
|
dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%llu",
|
2008-12-03 21:41:36 +00:00
|
|
|
sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
|
scsi: core: Fix early registration of sysfs attributes for scsi_device
v4.17 commit 86b87cde0b55 ("scsi: core: host template attribute groups")
introduced explicit sysfs_create_groups() in scsi_sysfs_add_sdev()
and sysfs_remove_groups() in __scsi_remove_device(), both for sdev_gendev,
based on a new field const struct attribute_group **sdev_groups
of struct scsi_host_template.
Commit 92c4b58b15c5 ("scsi: core: Register sysfs attributes earlier")
removed above explicit (de)registration of scsi_device attribute groups.
It also converted all scsi_device attributes and attribute_groups to
end up in a new field const struct attribute_group *gendev_attr_groups[6]
of struct scsi_device. However, that new field was not used anywhere.
Surprisingly, this only caused missing LLDD specific scsi_device sysfs
attributes. Whereas, scsi core attributes from scsi_sdev_attr_groups
did continue to exist because of scsi_dev_type.groups.
We separate scsi core attibutes from LLDD specific attributes.
Hence, we keep the initializing assignment scsi_dev_type =
{ .groups = scsi_sdev_attr_groups, } as this takes care of core
attributes. Without the separation, it would cause attribute double
registration due to scsi_dev_type.groups and sdev_gendev.groups.
Julian suggested to assign the sdev_groups pointer of the
scsi_host_template directly to the groups pointer of sdev_gendev.
This way we can delete the container scsi_device.gendev_attr_groups
and the loop copying each entry from hostt->sdev_groups to
sdev->gendev_attr_groups.
Alternative approaches ruled out:
Assigning gendev_attr_groups to sdev_dev has no visible effect.
Assigning sdev->gendev_attr_groups to scsi_dev_type.groups
caused scsi_device of all scsi host types to get LLDD specific
attributes of the LLDD for which the last sdev alloc happened to occur,
as that overwrote scsi_dev_type.groups,
e.g. scsi_debug had zfcp-specific scsi_device attributes.
Link: https://lore.kernel.org/r/20211026014240.4098365-1-maier@linux.ibm.com
Fixes: 92c4b58b15c5 ("scsi: core: Register sysfs attributes earlier")
Suggested-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-10-26 01:42:40 +00:00
|
|
|
sdev->sdev_gendev.groups = hostt->sdev_groups;
|
2008-12-03 21:41:36 +00:00
|
|
|
|
2008-02-21 23:13:36 +00:00
|
|
|
device_initialize(&sdev->sdev_dev);
|
2009-10-02 18:30:08 +00:00
|
|
|
sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev);
|
2008-02-21 23:13:36 +00:00
|
|
|
sdev->sdev_dev.class = &sdev_class;
|
2014-06-25 13:27:36 +00:00
|
|
|
dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%llu",
|
2008-12-03 21:41:36 +00:00
|
|
|
sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
|
2014-09-02 15:35:50 +00:00
|
|
|
/*
|
|
|
|
* Get a default scsi_level from the target (derived from sibling
|
|
|
|
* devices). This is the best we can do for guessing how to set
|
|
|
|
* sdev->lun_in_cdb for the initial INQUIRY command. For LUN 0 the
|
|
|
|
* setting doesn't matter, because all the bits are zero anyway.
|
|
|
|
* But it does matter for higher LUNs.
|
|
|
|
*/
|
2007-01-08 16:12:32 +00:00
|
|
|
sdev->scsi_level = starget->scsi_level;
|
2014-09-02 15:35:50 +00:00
|
|
|
if (sdev->scsi_level <= SCSI_2 &&
|
|
|
|
sdev->scsi_level != SCSI_UNKNOWN &&
|
|
|
|
!shost->no_scsi2_lun_in_cdb)
|
|
|
|
sdev->lun_in_cdb = 1;
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
transport_setup_device(&sdev->sdev_gendev);
|
|
|
|
spin_lock_irqsave(shost->host_lock, flags);
|
|
|
|
list_add_tail(&sdev->same_target_siblings, &starget->devices);
|
|
|
|
list_add_tail(&sdev->siblings, &shost->__devices);
|
|
|
|
spin_unlock_irqrestore(shost->host_lock, flags);
|
2014-01-21 15:00:50 +00:00
|
|
|
/*
|
|
|
|
* device can now only be removed via __scsi_remove_device() so hold
|
|
|
|
* the target. Target will be held in CREATED state until something
|
|
|
|
* beneath it becomes visible (in which case it moves to RUNNING)
|
|
|
|
*/
|
|
|
|
kref_get(&starget->reap_ref);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int scsi_is_sdev_device(const struct device *dev)
|
|
|
|
{
|
2007-09-26 17:54:49 +00:00
|
|
|
return dev->type == &scsi_dev_type;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(scsi_is_sdev_device);
|
|
|
|
|
|
|
|
/* A blank transport template that is used in drivers that don't
|
|
|
|
* yet implement Transport Attributes */
|
|
|
|
struct scsi_transport_template blank_transport_template = { { { {NULL, }, }, }, };
|