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* mtip32xx: fix device removalChristoph Hellwig2022-06-281-1/+0
| | | | | | | | | | | | Use the proper helper to mark a surpise removal, remove the gendisk as soon as possible when removing the device and implement the ->free_disk callback to ensure the private data is alive as long as the gendisk has references. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20220619060552.1850436-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: remove the device_status debugfs fileChristoph Hellwig2022-06-281-4/+0
| | | | | | | | | | This file is a huge mess that iterates over all devices and is in the way of fixing the device removal in this driver, so remove it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20220619060552.1850436-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: remove genhd.hChristoph Hellwig2022-02-021-1/+0
| | | | | | | | | | | | There is no good reason to keep genhd.h separate from the main blkdev.h header that includes it. So fold the contents of genhd.h into blkdev.h and remove genhd.h entirely. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20220124093913.742411-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: remove the call to fsync_bdev on removalChristoph Hellwig2020-12-011-2/+0
| | | | | | | | | | | del_gendisk already calls fsync_bdev for every partition, no need to do this twice. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157Thomas Gleixner2019-05-301-11/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on 3 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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* mtip32xx: remove trim supportChristoph Hellwig2019-04-251-17/+0
| | | | | | | | | | The trim support in mtip32xx has been "temporarily" disabled for 6 years, which is 3/4 of the time the driver even exists in the tree. Remove it as it obviously is dead code now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: avoid using semaphoresArnd Bergmann2018-12-101-2/+2
| | | | | | | | | The "cmd_slot_unal" semaphore is never used in a blocking way but only as an atomic counter. Change the code to using atomic_dec_if_positive() as a better API. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: don't use req->specialChristoph Hellwig2018-11-091-1/+6
| | | | | | | | Instead create add to the icmd into struct mtip_cmd which can be unioned with the scatterlist used for the normal I/O path. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: remove mtip_init_cmd_headerChristoph Hellwig2018-11-091-5/+0
| | | | | | | | | There isn't much need for this helper - we can just calculate the offset for the command header once late in the submission path and fill out the ctba and ctbau fields there. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: add missing endianess annotations on struct smart_attrChristoph Hellwig2018-11-091-2/+2
| | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: remove __force_bit2intChristoph Hellwig2018-11-091-15/+13
| | | | | | | There is no good excuse not to use proper __le16/32 types. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: avoid to read HOST_CAP from HW in .queue_rq()Ming Lei2017-07-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | It is observed reading the register from HW takes a bit long, for example in my box, the following difference of 'perf report --no-children fio ...' can be seen when running I/O: 1) V4.12 without patch + 9.28% fio [mtip32xx] [k] mtip_irq_handler + 8.48% fio [mtip32xx] [k] mtip_init_cmd_header 2) V4.12 with the following patch + 9.14% fio [mtip32xx] [k] mtip_irq_handler ...... + 1.14% fio [mtip32xx] [k] mtip_init_cmd_header IOPS can be increased by ~5% with this patch too. Fixes: a4e84aae8139(mtip32xx: use runtime tag to initialize command header) Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: introduce new block status code typeChristoph Hellwig2017-06-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | Currently we use nornal Linux errno values in the block layer, and while we accept any error a few have overloaded magic meanings. This patch instead introduces a new blk_status_t value that holds block layer specific status codes and explicitly explains their meaning. Helpers to convert from and to the previous special meanings are provided for now, but I suspect we want to get rid of them in the long run - those drivers that have a errno input (e.g. networking) usually get errnos that don't know about the special block layer overloads, and similarly returning them to userspace will usually return somethings that strictly speaking isn't correct for file system operations, but that's left as an exercise for later. For now the set of errors is a very limited set that closely corresponds to the previous overloaded errno values, but there is some low hanging fruite to improve it. blk_status_t (ab)uses the sparse __bitwise annotations to allow for sparse typechecking, so that we can easily catch places passing the wrong values. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: convert internal commands to regular block infrastructureJens Axboe2017-05-031-10/+0
| | | | | | | | Get rid of the private end_io handlers and data, and just use the regular block IO path for these requests. This removes a lot of redundant code. Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: add a status field to struct mtip_cmdChristoph Hellwig2017-04-201-0/+1
| | | | | | | | Instead of using req->errors, which will go away. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: Implement timeout handlerAsai Thambi SP2016-03-031-2/+5
| | | | | | | | | | | Added timeout handler. Replaced blk_mq_end_request() with blk_mq_complete_request() to avoid double completion of a request. Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Rajesh Kumar Sambandam <rsambandam@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Cc: stable@vger.kernel.org Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: Handle safe removal during IOAsai Thambi SP2016-03-031-0/+1
| | | | | | | | | | | Flush inflight IOs using fsync_bdev() when the device is safely removed. Also, block further IOs in device open function. Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Rajesh Kumar Sambandam <rsambandam@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Cc: stable@vger.kernel.org Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: Fix broken service thread handlingAsai Thambi SP2016-03-031-0/+5
| | | | | | | | | | Service thread does not detect the need for taskfile error hanlding. Fixed the flag condition to process taskfile error. Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Cc: stable@vger.kernel.org Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: Fix accessing freed memorySelvan Mani2015-06-241-2/+0
| | | | | | | | | | | | | In mtip_pci_remove(), driver data 'dd' is accessed after freeing it. This is a residue of SRSI code cleanup in the patch 016a41c38821 "mtip32xx: fix crash on surprise removal of the drive". Removed the bit flags MTIP_DDF_REMOVE_DONE_BIT and MTIP_PF_SR_CLEANUP_BIT. Reported-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Vignesh Gunasekaran <vgunasekaran@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: remove unused variable 'port->allocated'Asai Thambi SP2015-06-161-7/+1
| | | | | | | | Remove unused variable 'port->allocated' Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: minor performance enhancementsSam Bradshaw2014-06-061-4/+4
| | | | | | | | | | | | | | | | | | | | | This patch adds the following: 1) Compiler hinting in the fast path. 2) A prefetch of port->flags to eliminate moderate cpu stalling later in mtip_hw_submit_io(). 3) Eliminate a redundant rq_data_dir(). 4) Reorder members of driver_data to eliminate false cacheline sharing between irq_workers_active and unal_qdepth. With some workload and topology configurations, I'm seeing ~1.5% throughput improvement in small block random read benchmarks as well as improved latency std. dev. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Add include of <linux/prefetch.h> Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: move error handling to service threadAsai Thambi S P2014-05-201-3/+5
| | | | | | | | | Move error handling to service thread, and use mtip_set_timeout() to set timeouts for HDIO_DRIVE_TASK and HDIO_DRIVE_CMD IOCTL commands. Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: convert to use blk-mqJens Axboe2014-05-141-21/+3
| | | | | | | | This rips out timeout handling, requeueing, etc in converting it to use blk-mq instead. Acked-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* Merge branch 'for-3.15/drivers' of git://git.kernel.dk/linux-blockLinus Torvalds2014-04-021-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block driver update from Jens Axboe: "On top of the core pull request, here's the pull request for the driver related changes for 3.15. It contains: - Improvements for msi-x registration for block drivers (mtip32xx, skd, cciss, nvme) from Alexander Gordeev. - A round of cleanups and improvements for drbd from Andreas Gruenbacher and Rashika Kheria. - A round of clanups and improvements for bcache from Kent. - Removal of sleep_on() and friends in DAC960, ataflop, swim3 from Arnd Bergmann. - Bug fix for a bug in the mtip32xx async completion code from Sam Bradshaw. - Bug fix for accidentally bouncing IO on 32-bit platforms with mtip32xx from Felipe Franciosi" * 'for-3.15/drivers' of git://git.kernel.dk/linux-block: (103 commits) bcache: remove nested function usage bcache: Kill bucket->gc_gen bcache: Kill unused freelist bcache: Rework btree cache reserve handling bcache: Kill btree_io_wq bcache: btree locking rework bcache: Fix a race when freeing btree nodes bcache: Add a real GC_MARK_RECLAIMABLE bcache: Add bch_keylist_init_single() bcache: Improve priority_stats bcache: Better alloc tracepoints bcache: Kill dead cgroup code bcache: stop moving_gc marking buckets that can't be moved. bcache: Fix moving_pred() bcache: Fix moving_gc deadlocking with a foreground write bcache: Fix discard granularity bcache: Fix another bug recovering from unclean shutdown bcache: Fix a bug recovering from unclean shutdown bcache: Fix a journalling reclaim after recovery bug bcache: Fix a null ptr deref in journal replay ...
| * mtip32xx: mtip_async_complete() bug fixesSam Bradshaw2014-03-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes 2 issues in the fast completion path: 1) Possible double completions / double dma_unmap_sg() calls due to lack of atomicity in the check and subsequent dereference of the upper layer callback function. Fixed with cmpxchg before unmap and callback. 2) Regression in unaligned IO constraining workaround for p420m devices. Fixed by checking if IO is unaligned and using proper semaphore if so. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Cc: stable@kernel.org Signed-off-by: Jens Axboe <axboe@fb.com>
* | mtip32xx: Reduce the number of unaligned writes to 2Asai Thambi S P2014-02-181-1/+1
|/ | | | | | | | | After several experiments, deduced the the optimal number of unaligned writes to be 2. Changing the value accordingly. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* mtip32xx: Correctly handle security locked conditionSam Bradshaw2014-01-221-1/+1
| | | | | | | | | | | | | | If power is removed during a secure erase, the drive will end up in a security locked condition. This patch causes the driver to identify, log, and flag the security lock state. IOs are prevented from submission to the drive until the locked state is addressed with a secure erase. Bumped version number to reflect this capability. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Make SGL container per-command to eliminate high order dma allocationSam Bradshaw2014-01-221-7/+5
| | | | | | | | | | | | | | | | | | The mtip32xx driver makes a high order dma memory allocation to store a command index table, some dedicated buffers, and a command header & SGL blob. This allocation can fail with a surprise insert under low & fragmented memory conditions. This patch breaks these regions up into separate low order allocations and increases the maximum number of segments a single command SGL can have. We wanted to allow at least 256 segments for 1 MB direct IO. Since the command header occupies the first 0x80 bytes of the SGL blob, that meant we needed two 4k pages to contain the header and SGL. The two pages allow up to 504 SGL segments. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Add SRSI supportAsai Thambi S P2013-11-081-5/+13
| | | | | | | | | | | | | | | | | | | | | | This patch add support for SRSI(Surprise Removal Surprise Insertion). Approach: --------- Surprise Removal: ----------------- On surprise removal of the device, gendisk, request queue, device index, sysfs entries, etc are retained as long as device is in use - mounted filesystem, device opened by an application, etc. The service thread breaks out of the main while loop, waits for pci remove to exit, and then waits for device to become free. When there no holders of the device, service thread cleans up the block and device related stuff and returns. Surprise Insertion: ------------------- No change, this scenario follows the normal pci probe() function flow. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge branch 'for-3.10/drivers' of git://git.kernel.dk/linux-blockLinus Torvalds2013-05-081-0/+11
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block driver updates from Jens Axboe: "It might look big in volume, but when categorized, not a lot of drivers are touched. The pull request contains: - mtip32xx fixes from Micron. - A slew of drbd updates, this time in a nicer series. - bcache, a flash/ssd caching framework from Kent. - Fixes for cciss" * 'for-3.10/drivers' of git://git.kernel.dk/linux-block: (66 commits) bcache: Use bd_link_disk_holder() bcache: Allocator cleanup/fixes cciss: bug fix to prevent cciss from loading in kdump crash kernel cciss: add cciss_allow_hpsa module parameter drivers/block/mg_disk.c: add CONFIG_PM_SLEEP to suspend/resume functions mtip32xx: Workaround for unaligned writes bcache: Make sure blocksize isn't smaller than device blocksize bcache: Fix merge_bvec_fn usage for when it modifies the bvm bcache: Correctly check against BIO_MAX_PAGES bcache: Hack around stuff that clones up to bi_max_vecs bcache: Set ra_pages based on backing device's ra_pages bcache: Take data offset from the bdev superblock. mtip32xx: mtip32xx: Disable TRIM support mtip32xx: fix a smatch warning bcache: Disable broken btree fuzz tester bcache: Fix a format string overflow bcache: Fix a minor memory leak on device teardown bcache: Documentation updates bcache: Use WARN_ONCE() instead of __WARN() bcache: Add missing #include <linux/prefetch.h> ...
| * mtip32xx: Workaround for unaligned writesAsai Thambi S P2013-04-291-0/+11
| | | | | | | | | | | | | | | | | | Workaround for handling unaligned writes: limit number of outstanding unaligned writes Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* | mtip32xx: Add debugfs entry device_statusAsai Thambi S P2013-04-031-7/+11
|/ | | | | | | | | | This patch adds a new debugfs entry 'device_status' in /sys/kernel/debug/rssd. The value of this entry shows devices online and those in the process of removing. Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: add trim supportAsai Thambi S P2013-01-111-0/+17
| | | | | | | | TRIM support added through vendor unique command. Signed-off-by: Sam Bradshaw < sbradshaw@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Add workqueue and NUMA supportAsai Thambi S P2013-01-111-4/+27
| | | | | | | | | | | | This patch contains * parallel command completion using workers * bind the workers to the chosen numa node * bind isr to the chosen numa node * allocating memory in the chosen numa node Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Fix padding issueSelvan Mani2012-11-231-2/+2
| | | | | | | | | | | | | Hi Jens, Another tiny patch. Removed __packed before the struct smart_attr and added __packed at end of the structure to fix padding issue. Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Fix incorrect mask used for erase modeSelvan Mani2012-11-231-1/+1
| | | | | | | | | Previous commit use value 3 for erasemode mask. Changing the mask to correct value to 2 Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx:Added appropriate timeout value for secure eraseSelvan Mani2012-10-301-0/+3
| | | | | | | | Added appropriate timeout value for secure erase based on identify device data Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Handle NCQ commands during the security locked stateAsai Thambi S P2012-09-121-0/+2
| | | | | | | | Return error for NCQ commands when the drive is in security locked state Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Add support for new devicesAsai Thambi S P2012-09-121-1/+7
| | | | | | | | Added supported device IDs in pci table Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Selvan Mani <smani@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Create debugfs entries for troubleshootingAsai Thambi S P2012-06-051-0/+4
| | | | | | | | | | | On module load, creates a debugfs parent 'rssd' in debugfs root. Then for each device, create a new node with corresponding disk name. Under the new node, two entries 'registers' and 'flags' are created. NOTE: These entries were removed from sysfs in the previous patch Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Remove version.h header file inclusionSachin Kamat2012-06-041-1/+0
| | | | | | version.h header file inclusion is no longer required. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
* mtip32xx: Convert macro definitions for flag bits to enumAsai Thambi S P2012-05-311-23/+25
| | | | | | | Convert macro definitions for flags bits to enum Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: fix handling of commands in various scenariosAsai Thambi S P2012-04-091-14/+25
| | | | | | | | | | | | * If a ncq command time out and a non-ncq command is active, skip restart port * Queue(pause) ncq commands during operations spanning more than one non-ncq commands - secure erase, download microcode * When a non-ncq command is active, allow incoming non-ncq commands to wait instead of failing back * Changed timeout for download microcode and smart commands * If the device in write protect mode, fail all writes (do not send to device) * Set maximum retries to 2 Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Shorten macro namesAsai Thambi S P2012-04-091-14/+14
| | | | | | | Shortened macros used to represent mtip_port->flags and dd->dd_flag Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Add new sysfs entry 'status'Asai Thambi S P2012-04-091-0/+19
| | | | | | | | | | | * Add support for detecting the following device status - write protect - over temp (thermal shutdown) * Add new sysfs entry 'status', possible values - online, write_protect, thermal_shutdown * Add new file 'sysfs-block-rssd' to document ABI (Reported-by: Greg Kroah-Hartman) Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: Add new bitwise flag 'dd_flag'Asai Thambi S P2012-04-091-5/+7
| | | | | | | | | | | | | * Merged the following flags into one variable 'dd_flag': * drv_cleanup_done * resumeflag * Added the following flags into 'dd_flag' * remove pending * init done * Removed 'ftlrebuildflag' (similar flag is already part of mti_port->flags) Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: removed the irrelevant argument of mtip_hw_submit_io() and the ↵Asai Thambi S P2012-02-071-5/+0
| | | | | | | | | | | | unused member of struct driver_data Removed the following: * irrelevant argument 'barrier' of mtip_hw_submit_io() * unused member 'eh_active' of struct driver_data Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: do rebuild monitoring asynchronouslyAsai Thambi S P2012-01-041-0/+1
| | | | | | | | | | Earlier, rebuild monitoring was done in the context of probe. Now the service thread takes the responsibility of rebuild monitoring, and probe returns good status. Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: updates based on feedbackAsai Thambi S P2011-11-231-14/+28
| | | | | | | | | | | | | | * queue ncq commands when a non-ncq is in progress or error handling is active * merge variables 'internal_cmd_in_progress' and 'eh_active' into new variable 'flags' * get rid of read/write semaphore 'internal_sem' * new service thread to issue queued commands * use macros from ata.h for command codes * return ENOTTY for BLKFLSBUF ioctl * style changes Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by: Sam Bradshaw <sbradshaw@micron.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* mtip32xx: ensure that all local functions are staticJens Axboe2011-11-051-33/+0
| | | | | | | | Kill the declarations in the header file and mark them as static. Reshuffle a few functions to ensure that everything is properly declared before being used. Signed-off-by: Jens Axboe <axboe@kernel.dk>
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