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path: root/drivers/block/rsxx
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2013-06-19rsxx: Adding in debugfs entries.Philip J Kelleher
Adding debugfs entries to help with debugging and testing and testing code. pci_regs: This entry will spit out all of the data stored on the BAR. stats: This entry will display all of the driver stats for each DMA channel. cram: This will allow read/write ability to the CRAM address space on our adapter's CPU. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Fixes incorrect stats calculation.Philip J Kelleher
Fixing incorrect stats calculation during read retries. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Adding EEH check inside cregs timeout.Philip J Kelleher
Unfortunaly, our CPU register path does not do any kind of EEH error checking. So to fix this issue, an ioread32 was added to the CPU register timeout code. This way, the driver can check to see if the timeout was caused by an EEH error or not. This is a dummy read. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Adapter address space sanity check.Philip J Kelleher
Adding a sanity check to guarentee that DMAs outside of the device's address space will be errored out right away. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Fixes DLPAR add kernel panic if partition still mounted.Philip J Kelleher
A kernel panic would occur on a DLPAR add if there was a partition still mounted during the DLPAR remove. This bug fix will allow the user to unmount the partition and bring the driver back into a good state after the DLPAR add. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Changing the adapter name to the official name.Philip J Kelleher
Changing the adapter name from FlashSystem-80 to the official name: Flash Adapter 900GB Full Height. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Adding in sync_start module paramenter.Philip J Kelleher
Before, the partition table would have to be reread because our card was attached before it transistioned out of it's 'starting' state. This change will cause the driver to wait to attach the device until the adapter is ready. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Allow block size to be determined by configuration.Philip J Kelleher
Previously, the block size was determined by whether or not our Hardware could handle 512 byte accesses. Now, all of our Hardware can handle 512 and 4096 block sizes. This fix allows it to be user configurable. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Fixes soft-lockup issues during DMAs.Philip J Kelleher
The workqueue mechanism has been reworked to prevent soft lockup issues from occuring by adding in mutex sychronization. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Restructured DMA cancel scheme.Philip J Kelleher
Before, DMAs would never be cancelled if there was a data stall or an EEH Permenant failure which would cause an unrecoverable I/O hang. The DMA cancellation mechanism has been modified to fix these issues and allows DMAs to be cancelled during the above mentioned events. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-06-19rsxx: Individual workqueues for interruptible events.Philip J Kelleher
Giving all interrupt based events their own workqueue to complete tasks on. This fixes a bug that would cause creg commands to timeout if too many are issued at once. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-26rsxx: remove unused variablePhilip J Kelleher
Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-26rsxx: enable error return of rsxx_eeh_save_issued_dmas()Philip J Kelleher
Commit d8d595df introduced a bug where we did not check for a NULL return from kmalloc(). Make rsxx_eeh_save_issued_dmas() return an error for that case, and make the callers handle that. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-25block: removes dynamic allocation on stackPhilip J Kelleher
This patch removes dynamic allocation on the stack error. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-16rsxx: fix missing unlock on error return in rsxx_eeh_remap_dmas()Jens Axboe
Spotted by Fenguan Wu's super build robot. Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-16Adding in EEH support to the IBM FlashSystem 70/80 device driverPhilip J Kelleher
Changes in v2 include: o Fixed spelling of guarantee. o Fixed potential memory leak if slot reset fails out. o Changed list_for_each_entry_safe with list_for_each_entry. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-11block: IBM RamSan 70/80 error message bug fix.Philip J Kelleher
This patch includes a simple change to the rsxx_pci_remove function that caused error messages because traffic was halted too early. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-11block: IBM RamSan 70/80 branding changes.Philip J Kelleher
This patch includes changing the hardware branding name from IBM RamSan to IBM FlashSystem. v2 Changes include: o Removing the unnecessary IBM Vendor ID #define v1 Changes include: o Changed all references of RamSan to FlashSystem. o Changed the vendor/device IDs for the product. o Changed driver version number. o Updated the MAINTAINERS file. o Various other little things. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-11block: IBM RamSan 70/80 fixes inconsistent locking.Philip J Kelleher
This patch includes changes to the cregs locking scheme. Before, inconsistant locking would occur because of misuse of spin_lock, spin_lock_bh, and counter parts. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-03-11block: IBM RamSan 70/80 trivial changes.Philip J Kelleher
This patch includes trivial changes that were recommended by different members of the Linux Community. Changes include: o Removing the redundant wmb(). o Formatting o Various other little things. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-02-18block: IBM RamSan 70/80 driver fixesPhilip J Kelleher
This patch includes the following driver fixes for the IBM RamSan 70/80 driver: o Changed the creg_ctrl lock from a mutex to a spinlock. o Added a count check for ioctl calls. o Removed unnecessary casting of void pointers. o Made every function static that needed to be. o Added comments to explain things more thoroughly. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-02-07rsxx: add slab.h include to dma.cJens Axboe
kbuild test robot says: tree: git://git.kernel.dk/linux-block.git for-3.9/drivers head: 1262e24a59a052f9a98383e47e7c903712490d5c commit: 8722ff8cdbfac9c1b20e67bb067b455c48cb8e93 [6/8] block: IBM RamSan 70/80 device driver config: make ARCH=alpha allyesconfig All error/warnings: drivers/block/rsxx/dma.c: In function 'rsxx_complete_dma': >> drivers/block/rsxx/dma.c:251:2: error: implicit declaration of function 'kmem_cache_free' [-Werror=implicit-function-declaration] drivers/block/rsxx/dma.c: In function 'rsxx_queue_discard': >> drivers/block/rsxx/dma.c:567:2: error: implicit declaration of function 'kmem_cache_alloc' [-Werror=implicit-function-declaration] >> drivers/block/rsxx/dma.c:567:6: warning: assignment makes pointer from integer without a cast [enabled by default] drivers/block/rsxx/dma.c: In function 'rsxx_queue_dma': >> drivers/block/rsxx/dma.c:601:6: warning: assignment makes pointer from integer without a cast [enabled by default] drivers/block/rsxx/dma.c: In function 'rsxx_dma_init': >> drivers/block/rsxx/dma.c:985:2: error: implicit declaration of function 'KMEM_CACHE' [-Werror=implicit-function-declaration] >> drivers/block/rsxx/dma.c:985:29: error: 'rsxx_dma' undeclared (first use in this function) drivers/block/rsxx/dma.c:985:29: note: each undeclared identifier is reported only once for each function it appears in >> drivers/block/rsxx/dma.c:985:39: error: 'SLAB_HWCACHE_ALIGN' undeclared (first use in this function) drivers/block/rsxx/dma.c: In function 'rsxx_dma_cleanup': >> drivers/block/rsxx/dma.c:995:2: error: implicit declaration of function 'kmem_cache_destroy' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-02-06block: remove new __devinit/exit annotations on ramsam driverStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-02-05block: IBM RamSan 70/80 device driverjosh.h.morris@us.ibm.com
This patch includes the device driver for the IBM RamSan family of PCI SSD flash storage cards. This driver will include support for the RamSan 70 and 80. The driver presents a block device for device I/O. Signed-off-by: Philip J Kelleher <pjk1939@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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