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2008-04-27[SCSI] qla2xxx: Collapse RISC-RAM retrieval code during a firmware-dump.Andrew Vasquez
Use the more efficient read-DMA'ble-buffer mailbox commands rather than reading a single word/dword at a time. We also remove a bulk of the duplicate mailbox command-handling codes in favor of more generic read-memory() routines (qla2xxx_dump_ram() and qla24xx_dump_ram()). Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27[SCSI] m68k: new mac_esp scsi driverFinn Thain
Replace the mac_esp driver with a new one based on the esp_scsi core. For esp_scsi: add support for sync transfers for the PIO mode, add a new esp_driver_ops method to get the maximum dma transfer size (like the old NCR53C9x driver), and some cleanups. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27[SCSI] scsi_transport_fc: fc_user_scan correctionJames Smart
Way back when, when the fc_user_scan routine was created, it kept some of its original logic that walked the rport list and kicked off a scan. Unfortunately, it didn't keep any of the locking around the rport list, nor did it consider the synchronous nature of the scan invoked. The result, there are some scan requests where the rport list changes, thus a subsequent scan is called on a bogus rport structure and the system NMI's. Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27[SCSI] aha1542: minor irq handler cleanupsJeff Garzik
- where the 'irq' function argument is known never to be used, rename it to 'dummy' to make this more obvious - replace per-irq lookup functions and tables with a direct reference to data object obtained via 'dev_id' function argument, passed from request_irq() Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27[SCSI] scsi_transport_spi: include sysfs.hRandy Dunlap
scsi_transport_spi.c needs to #include <linux/sysfs.h>: next-20080423/drivers/scsi/scsi_transport_spi.c:1467: error: implicit declaration of function 'sysfs_update_group' make[3]: *** [drivers/scsi/scsi_transport_spi.o] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27[SCSI] FlashPoint: fix off-by-one errorsAdrian Bunk
This patch fixes off-by-one errors in error checks (the variables are used as array indexes for arrays with MAX_SCSI_TAR resp. MAX_LUN elements) spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27[SCSI] aic7xxx: Update type check in aicasm grammarHannes Reinecke
The function type_check() in aicasm grammar code was never used properly due to a bug. This patch fixes it up and ensures it's only called if appropriate. In addition the unused 16bit instruction are disabled, but left in the code for reference. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27[SCSI] fix SLUB WARN_ONJames Bottomley
We're getting a WARN_ON from SLUB indicating that we're trying to free caches with in-use objects. The root cause is a new dependency in the command/sense free on unchecked_isa_dma. The WARN_ON is caused by drivers which change this in their setup after the command/sense cache is allocated. The fix is to move the allocation of this cache into scsi_add_host() so things like gdth have an opportunity to modify it between alloc and add (but *not* after). The true fix would be to move unchecked_isa_dma into the template and out of the host, so it because a truly read only variable. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27[SCSI] esp_scsi: Make cur_residue and tot_residue signed.David S. Miller
Many of the overflow checks test whether the value has gone negative, and we want to retain such checks. Reported by Julia Lawall. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27ide: add struct ide_io_ports (take 3)Bartlomiej Zolnierkiewicz
* Add struct ide_io_ports and use it instead of `unsigned long io_ports[]` in ide_hwif_t. * Rename io_ports[] in hw_regs_t to io_ports_array[]. * Use un-named union for 'unsigned long io_ports_array[]' and 'struct ide_io_ports io_ports' in hw_regs_t. * Remove IDE_*_OFFSET defines. v2: * scc_pata.c build fix from Stephen Rothwell. v3: * Fix ctl_adrr typo in Sparc-specific part of ns87415.c. (Noticed by Andrew Morton) Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-26ide: add struct ide_dma_ops (take 3)Bartlomiej Zolnierkiewicz
Add struct ide_dma_ops and convert core code + drivers to use it. While at it: * Drop "ide_" prefix from ->ide_dma_end and ->ide_dma_test_irq methods. * Drop "ide_" "infixes" from DMA methods. * au1xxx-ide.c: - use auide_dma_{test_irq,end}() directly in auide_dma_timeout() * pdc202xx_old.c: - drop "old_" "infixes" from DMA methods * siimage.c: - add siimage_dma_test_irq() helper - print SATA warning in siimage_init_one() * Remove no longer needed ->init_hwif implementations. v2: * Changes based on review from Sergei: - s/siimage_ide_dma_test_irq/siimage_dma_test_irq/ - s/drive->hwif/hwif/ in idefloppy_pc_intr(). - fix patch description w.r.t. au1xxx-ide changes - fix au1xxx-ide build - fix naming for cmd64*_dma_ops - drop "ide_" and "old_" infixes - s/hpt3xxx_dma_ops/hpt37x_dma_ops/ - s/hpt370x_dma_ops/hpt370_dma_ops/ - use correct DMA ops for HPT302/N, HPT371/N and HPT374 - s/it821x_smart_dma_ops/it821x_pass_through_dma_ops/ v3: * Two bugs slipped in v2 (noticed by Sergei): - use correct DMA ops for HPT374 (for real this time) - handle HPT370/HPT370A properly Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-25[SCSI] aha152x, eata, u14-34f: minor irq handler cleanupsJeff Garzik
- remove pointless casts from void* - remove needless references to 'irq' function argument, when that information is already stored somewhere in a driver-private struct. - where the 'irq' function argument is known never to be used, rename it to 'dummy' to make this more obvious - remove always-false tests for dev_id==NULL - remove always-true tests for 'irq == host_struct->irq' - replace per-irq lookup functions and tables with a direct reference to data object obtained via 'dev_id' function argument, passed from request_irq() This change's main purpose is to prepare for the patchset in jgarzik/misc-2.6.git#irq-remove, that explores removal of the never-used 'irq' argument in each interrupt handler. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-24[SCSI] aic79xx: fix MMIO for PPC 44x platformsSergei Shtylyov
The driver stores the PCI resource address into 'u_long' variable before calling ioremap_nocache() on it. This warrants kernel oops when the registers are accessed on PPC 44x platforms which (being 32-bit) have PCI memory space mapped beyond 4 GB. The arch/ppc/ kernel has a fixup in ioremap() that helps create an illusion that the PCI memory resources are mapped below 4 GB, but arch/powerpc/ code got rid of this trick, having instead CONFIG_RESOURCES_64BIT enabled. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-24[SCSI] aic7xxx: fix MMIO for PPC 44x platformsSergei Shtylyov
The driver stores the PCI resource address into 'u_long' variable before calling ioremap_nocache() on it. This warrants kernel oops when the registers are accessed on PPC 44x platforms which (being 32-bit) have PCI memory space mapped beyond 4 GB. The arch/ppc/ kernel has a fixup in ioremap() that helps create an illusion that the PCI memory resources are mapped below 4 GB, but arch/powerpc/ code got rid of this trick, having instead CONFIG_RESOURCES_64BIT enabled. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-24[SCSI] aic7xxx, aic79xx: deinline functionsDenys Vlasenko
Deinlines and moves big functions from .h to .c files. Adds prototypes for ahc_lookup_scb and ahd_lookup_scb to .h files. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-22[SCSI] scsi_transport_sas: fix the lifetime of sas bsg objectsFUJITA Tomonori
scsi_transport_sas calls blk_cleanup_queue too early for bsg queues. If a user holds a sas_host, end_device, or expander device open, remove the device, then send a request to it, we get a kernel crash. We need to call blk_cleanup_queue in the release callback as we do with scsi devices. This patch moves blk_cleanup_queue to sas_expander_release and sas_end_device_release from sas_bsg_remove. sas_host can't use the release callback in struct device so use bsg's release callback. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-22[SCSI] bsg: add release callback supportFUJITA Tomonori
This patch adds release callback support, which is called when a bsg device goes away. bsg_register_queue() takes a pointer to a callback function. This feature is useful for stuff like sas_host that can't use the release callback in struct device. If a caller doesn't need bsg's release callback, it can call bsg_register_queue() with NULL pointer (e.g. scsi devices can use release callback in struct device so they don't need bsg's callback). With this patch, bsg uses kref for refcounts on bsg devices instead of get/put_device in fops->open/release. bsg calls put_device and the caller's release callback (if it was registered) in kref_put's release. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-22[SCSI] rework scsi_target allocationJames Bottomley
The current target allocation code registeres each possible target with sysfs; it will be deleted again if no useable LUN on this target was found. This results in a string of 'target add/target remove' uevents. Based on a patch by Hannes Reinecke <hare@suse.de> this patch reworks the target allocation code so that only uevents for existing targets are sent. The sysfs registration is split off from the existing scsi_target_alloc() into a in a new scsi_add_target() function, which should be called whenever an existing target is found. Only then a uevent is sent, so we'll be generating events for existing targets only. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-22[SCSI] use default attributes for scsi_hostHannes Reinecke
This patch removes the unused sysfs attibute overwriting logic for the scsi host attibutes, and plugs them into the driver core default attribute creation. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-22[SCSI] scsi_transport_spi: fix the attribute settingsJames Bottomley
We now take advantage of the mode_t return of is_valid, and also update the attributes when the target is configured. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-22[SCSI] qla2xxx, lfpc: Rename 'state' attribute to 'link_state'Hannes Reinecke
lpfc and qla2xxx overwrite the standard 'state' attribute with custom callbacks. So rename the custom attributes to 'link_state' and retain the original meaning of the 'state' attribute. Signed-off-by: Hannes Reinecke <hare@suse.de> Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Acked-by: James Smart <James.Smart@Emulex.Com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-22[SCSI] add scsi_host and scsi_target to scsi_busHannes Reinecke
This patch implements scsi_host and scsi_target device types and adds both to the scsi_bus. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-22[SCSI] st: fix up after class_device removalJames Bottomley
There's a change in the SCSI tree that adds another class_device, so change it to an ordinary device [jejb: this one got rebased until it's basically cosmetic only] Cc: Kai Makisara <Kai.Makisara@kolumbus.fi> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-21Merge branch 'for-2.6.26' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds
* 'for-2.6.26' of git://git.kernel.dk/linux-2.6-block: block: fix blk_register_queue() return value block: fix memory hotplug and bouncing in block layer block: replace remaining __FUNCTION__ occurrences Kconfig: clean up block/Kconfig help descriptions cciss: fix warning oops on rmmod of driver cciss: Fix race between disk-adding code and interrupt handler block: move the padding adjustment to blk_rq_map_sg block: add bio_copy_user_iov support to blk_rq_map_user_iov block: convert bio_copy_user to bio_copy_user_iov loop: manage partitions in disk image cdrom: use kmalloced buffers instead of buffers on stack cdrom: make unregister_cdrom() return void cdrom: use list_head for cdrom_device_info list cdrom: protect cdrom_device_info list by mutex cdrom: cleanup hardcoded error-code cdrom: remove ifdef CONFIG_SYSCTL
2008-04-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits) SCSI: convert struct class_device to struct device DRM: remove unused dev_class IB: rename "dev" to "srp_dev" in srp_host structure IB: convert struct class_device to struct device memstick: convert struct class_device to struct device driver core: replace remaining __FUNCTION__ occurrences sysfs: refill attribute buffer when reading from offset 0 PM: Remove destroy_suspended_device() Firmware: add iSCSI iBFT Support PM: Remove legacy PM (fix) Kobject: Replace list_for_each() with list_for_each_entry(). SYSFS: Explicitly include required header file slab.h. Driver core: make device_is_registered() work for class devices PM: Convert wakeup flag accessors to inline functions PM: Make wakeup flags available whenever CONFIG_PM is set PM: Fix misuse of wakeup flag accessors in serial core Driver core: Call device_pm_add() after bus_add_device() in device_add() PM: Handle device registrations during suspend/resume block: send disk "change" event for rescan_partitions() sysdev: detect multiple driver registrations ... Fixed trivial conflict in include/linux/memory.h due to semaphore header file change (made irrelevant by the change to mutex).
2008-04-21block: move the padding adjustment to blk_rq_map_sgFUJITA Tomonori
blk_rq_map_user adjusts bi_size of the last bio. It breaks the rule that req->data_len (the true data length) is equal to sum(bio). It broke the scsi command completion code. commit e97a294ef6938512b655b1abf17656cf2b26f709 was introduced to fix the above issue. However, the partial completion code doesn't work with it. The commit is also a layer violation (scsi mid-layer should not know about the block layer's padding). This patch moves the padding adjustment to blk_rq_map_sg (suggested by James). The padding works like the drain buffer. This patch breaks the rule that req->data_len is equal to sum(sg), however, the drain buffer already broke it. So this patch just restores the rule that req->data_len is equal to sub(bio) without breaking anything new. Now when a low level driver needs padding, blk_rq_map_user and blk_rq_map_user_iov guarantee there's enough room for padding. blk_rq_map_sg can safely extend the last entry of a scatter list. blk_rq_map_sg must extend the last entry of a scatter list only for a request that got through bio_copy_user_iov. This patches introduces new REQ_COPY_USER flag. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Tejun Heo <htejun@gmail.com> Cc: Mike Christie <michaelc@cs.wisc.edu> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-04-19SCSI: convert struct class_device to struct deviceTony Jones
It's big, but there doesn't seem to be a way to split it up smaller... Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-18Convert asm/semaphore.h users to linux/semaphore.hMatthew Wilcox
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-18drivers: Remove unnecessary inclusions of asm/semaphore.hMatthew Wilcox
None of these files use any of the functionality promised by asm/semaphore.h. It's possible that they rely on it dragging in some unrelated header file, but I can't build all these files, so we'll have fix any build failures as they come up. Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (137 commits) [SCSI] iscsi: bidi support for iscsi_tcp [SCSI] iscsi: bidi support at the generic libiscsi level [SCSI] iscsi: extended cdb support [SCSI] zfcp: Fix error handling for blocked unit for send FCP command [SCSI] zfcp: Remove zfcp_erp_wait from slave destory handler to fix deadlock [SCSI] zfcp: fix 31 bit compile warnings [SCSI] bsg: no need to set BSG_F_BLOCK bit in bsg_complete_all_commands [SCSI] bsg: remove minor in struct bsg_device [SCSI] bsg: use better helper list functions [SCSI] bsg: replace kobject_get with blk_get_queue [SCSI] bsg: takes a ref to struct device in fops->open [SCSI] qla1280: remove version check [SCSI] libsas: fix endianness bug in sas_ata [SCSI] zfcp: fix compiler warning caused by poking inside new semaphore (linux-next) [SCSI] aacraid: Do not describe check_reset parameter with its value [SCSI] aacraid: Fix down_interruptible() to check the return value [SCSI] sun3_scsi_vme: add MODULE_LICENSE [SCSI] st: rename flush_write_buffer() [SCSI] tgt: use KMEM_CACHE macro [SCSI] initio: fix big endian problems for auto request sense ...
2008-04-18[SCSI] iscsi: bidi support for iscsi_tcpBoaz Harrosh
access the right scsi_in() and/or scsi_out() side of things. also for resid Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Pete Wyckoff <pw@osc.edu> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-18[SCSI] iscsi: bidi support at the generic libiscsi levelBoaz Harrosh
- prepare the additional bidi_read rlength header. - access the right scsi_in() and/or scsi_out() side of things. also for resid. - Handle BIDI underflow overflow from target Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Pete Wyckoff <pw@osc.edu> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-18[SCSI] iscsi: extended cdb supportBoaz Harrosh
Support for extended CDBs in iscsi. All we need is to check if command spills over 16 bytes then allocate an iscsi-extended-header for the leftovers. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Pete Wyckoff <pw@osc.edu> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (58 commits) ide: remove ide_init_default_irq() macro ide: move default IDE ports setup to ide_generic host driver ide: remove obsoleted "idex=noprobe" kernel parameter (take 2) ide: remove needless hwif->irq check from ide_hwif_configure() ide: init hwif->{io_ports,irq} explicitly in legacy VLB host drivers ide: limit legacy VLB host drivers to alpha, x86 and mips cmd640: init hwif->{io_ports,irq} explicitly cmd640: cleanup setup_device_ptrs() ide: add ide-4drives host driver (take 3) ide: remove ppc ifdef from init_ide_data() ide: remove ide_default_io_ctl() macro ide: remove CONFIG_IDE_ARCH_OBSOLETE_INIT ide: add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS (take 2) ppc/pmac: remove no longer needed IDE quirk ppc: don't include <linux/ide.h> ppc: remove ppc_ide_md ppc/pplus: remove ppc_ide_md.ide_init_hwif hook ppc/sandpoint: remove ppc_ide_md hooks ppc/lopec: remove ppc_ide_md hooks ppc/mpc8xx: remove ppc_ide_md hooks ...
2008-04-18ide-scsi: do non-atomic pc->flags testingBorislav Petkov
...also, convert ide-scsi to using the generic pc->flags defines. Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ide-scsi: convert driver to using generic ide_atapi_pcBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ide: remove IDE_*_REG macrosBartlomiej Zolnierkiewicz
* Add IDE_{ALTSTATUS,IREASON,BCOUNTL,BCOUNTH}_OFFSET defines. * Remove IDE_*_REG macros - this results in more readable and slightly smaller code. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ide: add ide_atapi_{discard_data,write_zeros} inline helpersBartlomiej Zolnierkiewicz
Add ide_atapi_{discard_data,write_zeros} inline helpers to <linux/ide.h> and use them instead of home-brewn helpers in ide-{floppy,tape,scsi}. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-17libata: kill ata_noop_dev_select()Tejun Heo
Now that SFF assumptions are separated out from non-SFF reset sequence, port_ops->sff_dev_select() is no longer necessary for non-SFF controllers. Kill ata_noop_dev_select() and ->sff_dev_select initialization from base and other non-SFF port_ops. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: remove check_status from non-SFF driversTejun Heo
Now that all SFF stuff is separated out of core layer, core layer doesn't call ops->[alt_]check_status(). In fact, no one calls them for non-SFF drivers anymore. Kill them. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: replace tf_read with qc_fill_rtf for non-SFF driversTejun Heo
Now that all SFF stuff is separated out of core layer, core layer doesn't call ops->tf_read directly. It gets called only via ops->qc_fill_rtf() for non-SFF drivers. This patch directly implements private ops->qc_fill_rtf() for non-SFF controllers and kill ops->tf_read(). This is much cleaner for non-SFF controllers as some of them have to cache SFF register values in private data structure and report the cached values via ops->tf_read(). Also, ops->tf_read() gets nasty for controllers which don't have clear notion of TF registers when operation is not in progress. As this change makes default ops->qc_fill_rtf unnecessary, move ata_sff_qc_fill_rtf() form ata_base_port_ops to ata_sff_port_ops where it belongs. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: add qc_fill_rtf port operationTejun Heo
On command completion, ata_qc_complete() directly called ops->tf_read to fill qc->result_tf. This patch adds ops->qc_fill_rtf to replace hardcoded ops->tf_read usage. ata_sff_qc_fill_rtf() which uses ops->tf_read to fill result_tf is implemented and set in ata_base_port_ops and other ops tables which don't inherit from ata_base_port_ops, so this patch doesn't introduce any behavior change. ops->qc_fill_rtf() is similar to ops->sff_tf_read() but can only be called when a command finishes. As some non-SFF controllers don't have TF registers defined unless they're associated with in-flight commands, this limited operation makes life easier for those drivers and help lifting SFF assumptions from libata core layer. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: rename SFF port opsTejun Heo
Add sff_ prefix to SFF specific port ops. This rename is in preparation of separating SFF support out of libata core layer. This patch strictly renames ops and doesn't introduce any behavior difference. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17libata: make reset related methods proper port operationsTejun Heo
Currently reset methods are not specified directly in the ata_port_operations table. If a LLD wants to use custom reset methods, it should construct and use a error_handler which uses those reset methods. It's done this way for two reasons. First, the ops table already contained too many methods and adding four more of them would noticeably increase the amount of necessary boilerplate code all over low level drivers. Second, as ->error_handler uses those reset methods, it can get confusing. ie. By overriding ->error_handler, those reset ops can be made useless making layering a bit hazy. Now that ops table uses inheritance, the first problem doesn't exist anymore. The second isn't completely solved but is relieved by providing default values - most drivers can just override what it has implemented and don't have to concern itself about higher level callbacks. In fact, there currently is no driver which actually modifies error handling behavior. Drivers which override ->error_handler just wraps the standard error handler only to prepare the controller for EH. I don't think making ops layering strict has any noticeable benefit. This patch makes ->prereset, ->softreset, ->hardreset, ->postreset and their PMP counterparts propoer ops. Default ops are provided in the base ops tables and drivers are converted to override individual reset methods instead of creating custom error_handler. * ata_std_error_handler() doesn't use sata_std_hardreset() if SCRs aren't accessible. sata_promise doesn't need to use separate error_handlers for PATA and SATA anymore. * softreset is broken for sata_inic162x and sata_sx4. As libata now always prefers hardreset, this doesn't really matter but the ops are forced to NULL using ATA_OP_NULL for documentation purpose. * pata_hpt374 needs to use different prereset for the first and second PCI functions. This used to be done by branching from hpt374_error_handler(). The proper way to do this is to use separate ops and port_info tables for each function. Converted. Signed-off-by: Tejun Heo <htejun@gmail.com>
2008-04-17[SCSI] qla1280: remove version checkAdrian Bunk
There's no point for an in-kernel driver to check whether it's compiled under kernel < 2.6.0 . Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Jes Sorensen <jes@sgi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-17[SCSI] libsas: fix endianness bug in sas_ataAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-16[SCSI] aacraid: Do not describe check_reset parameter with its valuePaul Bolle
Describe check_reset parameter with its name (and not its value) Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-16[SCSI] aacraid: Fix down_interruptible() to check the return valueMark Salyzyn
Instead of ignoring the return value in aac_fib_send() return 2 to indicate to the layers above that fib transmission was aborted due to timeout. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-16[SCSI] sun3_scsi_vme: add MODULE_LICENSEAdrian Bunk
This patch adds the missing MODULE_LICENSE("GPL"). Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-16[SCSI] st: rename flush_write_buffer()Adrian Bunk
This patch fixes the following namespace collision with include/asm-avr32/cacheflush.h : <-- snip --> ... CC [M] drivers/scsi/st.o /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/scsi/st.c:629:53: error: macro "flush_write_buffer" passed 1 arguments, but takes just 0 ... make[3]: *** [drivers/scsi/st.o] Error 1 <-- snip --> st now uses st_flush_write_buffer() Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>