The host byte in the SCSI status takes precedence during error recovery, so
there is no point in setting the message byte in addition to a host byte
which is not DID_OK.
Link: https://lore.kernel.org/r/20210427083046.31620-32-hare@suse.de
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Replace the check for DRIVER_SENSE with a check for
scsi_status_is_check_condition().
Audit all callsites to ensure the SAM status is set correctly. For
backwards compability move the DRIVER_SENSE definition to sg.h, and update
sg, bsg, and scsi_ioctl to set the DRIVER_SENSE driver_status whenever
SAM_STAT_CHECK_CONDITION is present.
[mkp: fix zeroday srp warning]
Link: https://lore.kernel.org/r/20210427083046.31620-10-hare@suse.de
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
fix
This series consists of the usual driver updates (ufs, target, tcmu,
smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx). The major core
change is using a sbitmap instead of an atomic for queue tracking.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This consists of the usual driver updates (ufs, target, tcmu,
smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx).
The major core change is using a sbitmap instead of an atomic for
queue tracking"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (412 commits)
scsi: target: tcm_fc: Fix a kernel-doc header
scsi: target: Shorten ALUA error messages
scsi: target: Fix two format specifiers
scsi: target: Compare explicitly with SAM_STAT_GOOD
scsi: sd: Introduce a new local variable in sd_check_events()
scsi: dc395x: Open-code status_byte(u8) calls
scsi: 53c700: Open-code status_byte(u8) calls
scsi: smartpqi: Remove unused functions
scsi: qla4xxx: Remove an unused function
scsi: myrs: Remove unused functions
scsi: myrb: Remove unused functions
scsi: mpt3sas: Fix two kernel-doc headers
scsi: fcoe: Suppress a compiler warning
scsi: libfc: Fix a format specifier
scsi: aacraid: Remove an unused function
scsi: core: Introduce enum scsi_disposition
scsi: core: Modify the scsi_send_eh_cmnd() return value for the SDEV_BLOCK case
scsi: core: Rename scsi_softirq_done() into scsi_complete()
scsi: core: Remove an incorrect comment
scsi: core: Make the scsi_alloc_sgtables() documentation more accurate
...
This is the last piece in the kernel requiring the block layer ISA
bounce buffering, and it does not actually look used. So remove it
to see if anyone screams, in which case we'll need to find a solution
to fix it back up.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210331073001.46776-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This series consists of the usual driver updates (ufs, ibmvfc,
qla2xxx, hisi_sas, pm80xx) plus the removal of the gdth driver (which
is bound to cause conflicts with a trivial change somewhere). The
only big major rework of note is the one from Hannes trying to clean
up our result handling code in the drivers to make it consistent.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This series consists of the usual driver updates (ufs, ibmvfc,
qla2xxx, hisi_sas, pm80xx) plus the removal of the gdth driver (which
is bound to cause conflicts with a trivial change somewhere).
The only big major rework of note is the one from Hannes trying to
clean up our result handling code in the drivers to make it
consistent"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (194 commits)
scsi: MAINTAINERS: Adjust to reflect gdth scsi driver removal
scsi: ufs: Give clk scaling min gear a value
scsi: lpfc: Fix 'physical' typos
scsi: megaraid_mbox: Fix spelling of 'allocated'
scsi: qla2xxx: Simplify the calculation of variables
scsi: message: fusion: Fix 'physical' typos
scsi: target: core: Change ASCQ for residual write
scsi: target: core: Signal WRITE residuals
scsi: target: core: Set residuals for 4Kn devices
scsi: hisi_sas: Add trace FIFO debugfs support
scsi: hisi_sas: Flush workqueue in hisi_sas_v3_remove()
scsi: hisi_sas: Enable debugfs support by default
scsi: hisi_sas: Don't check .nr_hw_queues in hisi_sas_task_prep()
scsi: hisi_sas: Remove deferred probe check in hisi_sas_v2_probe()
scsi: lpfc: Add auto select on IRQ_POLL
scsi: ncr53c8xx: Fix typos
scsi: lpfc: Fix ancient double free
scsi: qla2xxx: Fix some memory corruption
scsi: qla2xxx: Remove redundant NULL check
scsi: megaraid: Fix ifnullfree.cocci warnings
...
The driver core ignores the return value of the remove callback, so
don't give isa drivers the chance to provide a value.
Adapt all isa_drivers with a remove callbacks accordingly; they all
return 0 unconditionally anyhow.
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for drivers/net/can/sja1000/tscan1.c
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Acked-by: Wolfram Sang <wsa@kernel.org> # for drivers/i2c/
Reviewed-by: Takashi Iway <tiwai@suse.de> # for sound/
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for drivers/media/
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Link: https://lore.kernel.org/r/20210122092449.426097-4-uwe@kleine-koenig.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Replace the driver-defined status byte accessors with the mid-layer defined
ones.
Link: https://lore.kernel.org/r/20210113090500.129644-35-hare@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fixes the following W=1 kernel build warning(s):
drivers/scsi/advansys.c: In function ‘asc_prt_asc_board_eeprom’:
drivers/scsi/advansys.c:2879:15: warning: variable ‘asc_dvc_varp’ set but not used [-Wunused-but-set-variable]
drivers/scsi/advansys.c: In function ‘asc_prt_driver_conf’:
drivers/scsi/advansys.c:3174:6: warning: variable ‘chip_scsi_id’ set but not used [-Wunused-but-set-variable]
drivers/scsi/advansys.c: In function ‘AdvISR’:
drivers/scsi/advansys.c:6114:9: warning: variable ‘target_bit’ set but not used [-Wunused-but-set-variable]
Link: https://lore.kernel.org/r/20201102142359.561122-17-lee.jones@linaro.org
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The current codebase makes use of the zero-length array language extension
to the C90 standard, but the preferred mechanism to declare variable-length
types such as these ones is a flexible array member[1][2], introduced in
C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by this
change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")
Link: https://lore.kernel.org/r/20200213000211.GA23171@embeddedor.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This topic branch covers a fundamental change in how our sg lists are
allocated to make mq more efficient by reducing the size of the
preallocated sg list. This necessitates a large number of driver
changes because the previous guarantee that if a driver specified
SG_ALL as the size of its scatter list, it would get a non-chained
list and didn't need to bother with scatterlist iterators is now
broken and every driver *must* use scatterlist iterators.
This was broken out as a separate topic because we need to convert all
the drivers before pulling the trigger and unconverted drivers kept
being found, necessitating a rebase.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI scatter-gather list updates from James Bottomley:
"This topic branch covers a fundamental change in how our sg lists are
allocated to make mq more efficient by reducing the size of the
preallocated sg list.
This necessitates a large number of driver changes because the
previous guarantee that if a driver specified SG_ALL as the size of
its scatter list, it would get a non-chained list and didn't need to
bother with scatterlist iterators is now broken and every driver
*must* use scatterlist iterators.
This was broken out as a separate topic because we need to convert all
the drivers before pulling the trigger and unconverted drivers kept
being found, necessitating a rebase"
* tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (21 commits)
scsi: core: don't preallocate small SGL in case of NO_SG_CHAIN
scsi: lib/sg_pool.c: clear 'first_chunk' in case of no preallocation
scsi: core: avoid preallocating big SGL for data
scsi: core: avoid preallocating big SGL for protection information
scsi: lib/sg_pool.c: improve APIs for allocating sg pool
scsi: esp: use sg helper to iterate over scatterlist
scsi: NCR5380: use sg helper to iterate over scatterlist
scsi: wd33c93: use sg helper to iterate over scatterlist
scsi: ppa: use sg helper to iterate over scatterlist
scsi: pcmcia: nsp_cs: use sg helper to iterate over scatterlist
scsi: imm: use sg helper to iterate over scatterlist
scsi: aha152x: use sg helper to iterate over scatterlist
scsi: s390: zfcp_fc: use sg helper to iterate over scatterlist
scsi: staging: unisys: visorhba: use sg helper to iterate over scatterlist
scsi: usb: image: microtek: use sg helper to iterate over scatterlist
scsi: pmcraid: use sg helper to iterate over scatterlist
scsi: ipr: use sg helper to iterate over scatterlist
scsi: mvumi: use sg helper to iterate over scatterlist
scsi: lpfc: use sg helper to iterate over scatterlist
scsi: advansys: use sg helper to iterate over scatterlist
...
Unlike the legacy I/O path, scsi-mq preallocates a large array to hold
the scatterlist for each request. This static allocation can consume
substantial amounts of memory on modern controllers which support a
large number of concurrently outstanding requests.
To facilitate a switch to a smaller static allocation combined with a
dynamic allocation for requests that need it, we need to make sure all
SCSI drivers handle chained scatterlists correctly.
Convert remaining drivers that directly dereference the scatterlist
array to using the iterator functions.
[mkp: clarified commit message]
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 3029 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The same effects can be achieved by setting the dma_boundary to
PAGE_SIZE - 1 and the max_segment_size to PAGE_SIZE, so shift those
settings into the drivers. Note that in many cases the setting might
be bogus, but this keeps the status quo.
[mkp: fix myrs and myrb]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Most SCSI drivers want to enable "clustering", that is merging of
segments so that they might span more than a single page. Remove the
ENABLE_CLUSTERING define, and require drivers to explicitly set
DISABLE_CLUSTERING to disable this feature.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/advansys.c: In function 'adv_isr_callback':
drivers/scsi/advansys.c:5952:6: warning:
variable 'srb_tag' set but not used [-Wunused-but-set-variable]
It never used since introduction in
commit 9c17c62aed ("advansys: use shared host tag map for command lookup")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Clang warns when multiple pairs of parentheses are used for a single
conditional statement.
drivers/scsi/advansys.c:6451:20: warning: equality comparison with
extraneous parentheses [-Wparentheses-equality]
if ((sdtr_data == 0xFF)) {
~~~~~~~~~~^~~~~~~
drivers/scsi/advansys.c:6451:20: note: remove extraneous parentheses
around the comparison to silence this warning
if ((sdtr_data == 0xFF)) {
~ ^ ~
drivers/scsi/advansys.c:6451:20: note: use '=' to turn this equality
comparison into an assignment
if ((sdtr_data == 0xFF)) {
^~
=
1 warning generated.
Link: https://github.com/ClangBuiltLinux/linux/issues/155
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
No functional change.
Just introduce scsi_host_busy() and replace the direct read of
scsi_host->host_busy with this new API.
Cc: Omar Sandoval <osandov@fb.com>,
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Cc: James Bottomley <james.bottomley@hansenpartnership.com>,
Cc: Christoph Hellwig <hch@lst.de>,
Cc: Don Brace <don.brace@microsemi.com>
Cc: Kashyap Desai <kashyap.desai@broadcom.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Laurence Oberman <loberman@redhat.com>
Cc: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This will make subsequent refactoring easier to handle.
Note: this patch is nowhere checkpatch clean.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
gcc-7.0.1 now warns about a previously unnoticed access of uninitialized
struct members:
drivers/scsi/advansys.c: In function 'AscMsgOutSDTR':
drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+5)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
((ushort)s_buffer[i + 1] << 8) | s_buffer[i]);
^
drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+7)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+5)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+7)' may be used uninitialized in this function [-Werror=maybe-uninitialized]
The code has existed in this exact form at least since v2.6.12, and the
warning seems correct. This uses named initializers to ensure we
initialize all members of the structure.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The advansys probe function tries to handle both ISA and PCI cases, each
hidden in an #ifdef when unused. This leads to a warning indicating that
when PCI is disabled we could be using uninitialized data:
drivers/scsi/advansys.c: In function advansys_board_found :
drivers/scsi/advansys.c:11036:5: error: ret may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/advansys.c:10928:28: note: ret was declared here
drivers/scsi/advansys.c:11309:8: error: share_irq may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/scsi/advansys.c:10928:6: note: share_irq was declared here
This cannot happen in practice because the hardware in question only
exists for PCI, but changing the code to just error out here is better
for consistency and avoids the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Building the advansys driver in a big-endian configuration such as
ARM allmodconfig shows a warning:
drivers/scsi/advansys.c: In function 'adv_build_req':
include/uapi/linux/byteorder/big_endian.h:32:26: warning: large integer implicitly truncated to unsigned type [-Woverflow]
#define __cpu_to_le32(x) ((__force __le32)__swab32((x)))
drivers/scsi/advansys.c:7806:22: note: in expansion of macro 'cpu_to_le32'
scsiqp->sense_len = cpu_to_le32(SCSI_SENSE_BUFFERSIZE);
It turns out that the commit that introduced this used the cpu_to_le32()
incorrectly on an 8-bit field, which results in the sense_len to always
be set to zero, as the SCSI_SENSE_BUFFERSIZE value gets moved to upper
byte of the 32-bit intermediate.
This removes the cpu_to_le32() call to restore the original version.
I found this only by looking at the compiler output and have not done a
full review for possible further endianess bugs in the same driver.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 811ddc057a ("advansys: use DMA-API for mapping sense buffer")
Reviewed-by: Hannes Reinecke <hare@suse.de>
Cc: stable@vger.kernel.org # v4.2+
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch changes the !blk-mq path to the same defaults as the blk-mq
I/O path by always enabling block tagging, and always using host wide
tags. We've had blk-mq available for a few releases so bugs with
this mode should have been ironed out, and this ensures we get better
coverage of over tagging setup over different configs.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Fix compilation errors on forgotten #include <linux/dmapool.h> and warnings when
CONFIG_PCI is not set.
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
The driver has now been converted to DMA-API, so we should
increase the version number and remove the compilation
warning.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Only required if the dma buffer has been allocated via
dma_alloc_noncoherent(), which this one is not.
With that call removed we can now also compile on ARM.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
We should be using spin_lock_irqsave() when within the
interrupt handler.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
DMA mapping might fail, so we need to check for errors here.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
These definitions are only ever used for the wide-scsi board,
so they should be prefixed with 'ADV', not 'ASC'.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Was uncommented in the original driver, and I'm too lazy to
figure out the conversion.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Removed unused structure ASC_SCSI_REQ_Q and update the
comments to 'ADV_SCSI_REQ_Q'.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
The 'data_addr' field is accessed by the board, and needs
to be kept in little endian format.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
AscIsrChipHalted will only ever return '0', so make it
a void function.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
The sg elements should be allocated from a dma pool.
And rename the structure to 'adv_sg_block' as they
are only used by the wide board.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Convert to use a shared host tag map for command lookup. This
saves us having an internal structure and avoid the command
pointer abuse.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
The advansys_reset() function is actually a host reset, not a
bus reset. And there is no need to have a 'last_reset'
value; the same value exists in struct Scsi_Host.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Using seq_putc to print a single character saves at least a strlen()
call and a memory access, and may also give a small .text reduction.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Consecutive seq_puts calls with literal strings may be replaced by a
single call, saving a little .text.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>
