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path: root/drivers/scsi/megaraid/megaraid_sas.c
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2008-02-06scsi: megaraid: trivial drop duplicate mutex.h includeDaniel Walker
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-30[SCSI] remove use_sg_chainingJames Bottomley
With the sg table code, every SCSI driver is now either chain capable or broken (or has sg_tablesize set so chaining is never activated), so there's no need to have a check in the host template. Also tidy up the code by moving the scatterlist size defines into the SCSI includes and permit the last entry of the scatterlist pools not to be a power of two. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] megaraid_sas: Update version and changelogbo yang
Update version and changelog Signed-off-by: Bo Yang <bo.yang@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] megaraid_sas: support for poll_mode_io (reduced interrupt)bo yang
Added module parameter "poll_mode_io" to support for "polling" (reduced interrupt operation). In this mode, IO completion interrupts are delayed. At the end of initiating IOs, the driver schedules for cmd completion if there are pending cmds. A timer-based interrupt has also been added to prevent IO completion from being delayed indefinitely in the case that no new IOs are initiated. Some formatting issues in resume, suspend comment block also corrected Signed-off-by: Bo Yang <bo.yang@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] megaraid_sas: call cmd completion from resetbo yang
Driver will call cmd completion routine from Reset path without waiting for cmd completion from isr context. Signed-off-by: Bo Yang <bo.yang@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] megaraid_sas: use unsigned long for sense_buff ptrbo yang
MegaRAID utilities expect sense_buff to be of type unsigned long. Signed-off-by: Bo Yang <bo.yang@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] megaraid_sas: check max_sgl reported by FW for setting ↵bo yang
max_sectors_per_req 1. Setting the max_sectors_per_req based on max SGL supported by the FW. Prior versions calculated this value from controller info's max_sectors_1, max_sectors_2. For certain controllers/FW, this was resulting in a value greater than max SGL supported by the FW. Now we take the min of max sgl from FW and max_sectors calculation. 2. Increased MFI_POLL_TIMEOUT_SECS to 60 seconds from 10. FW may take a max of 60 seconds to respond to the INIT cmd. Signed-off-by: Bo Yang <bo.yang@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] megaraid_sas: add hibernation supportbo yang
Adding hibernation support. suspend, resume routine implemented. Signed-off-by: Bo Yang <bo.yang@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] megaraid_sas: Convert aen_mutex to the mutex APIMatthias Kaehlcke
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Acked-by: Bo Yang <Bo.Yang@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-10-16[SCSI] add use_sg_chaining option to scsi_host_templateFUJITA Tomonori
This option is true if a low-level driver can support sg chaining. This will be removed eventually when all the drivers are converted to support sg chaining. q->max_phys_segments is set to SCSI_MAX_SG_SEGMENTS if false. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-19some kmalloc/memset ->kzalloc (tree wide)Yoann Padioleau
Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc). Here is a short excerpt of the semantic patch performing this transformation: @@ type T2; expression x; identifier f,fld; expression E; expression E1,E2; expression e1,e2,e3,y; statement S; @@ x = - kmalloc + kzalloc (E1,E2) ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\) - memset((T2)x,0,E1); @@ expression E1,E2,E3; @@ - kzalloc(E1 * E2,E3) + kcalloc(E1,E2,E3) [akpm@linux-foundation.org: get kcalloc args the right way around] Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <bryan.wu@analog.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jiri Kosina <jkosina@suse.cz> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Pierre Ossman <drzeus-list@drzeus.cx> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-31[SCSI] megaraid_sas: convert to use the data buffer accessorsFUJITA Tomonori
- remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Sumant Patro <sumant.patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-24[SCSI] megaraid_sas: intercept cmd timeout and throttle ioSumant Patro
eh_timed_out call back (megasas_reset_timer) is used to throttle io to the adapter when it is called the first time for a scmd. The MEGASAS_FW_BUSY flag is set and can_queue reduced to 16. The can_queue is restored from completion routine in following two conditions : 5 seconds has elapsed and the # of outstanding cmds in FW is < 17. Signed-off-by: Sumant Patro <sumant.patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-02-16[SCSI] megaraid_sas: update version and author infoSumant Patro
Signed-off-by: Sumant Patro <sumant.patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-02-16[SCSI] megaraid_sas: return sync cache call with successSumant Patro
FW does not support SYNCHRONIZE_CACHE cmd. FW flush cache on its own. So, we just return success from the megasas_queue_command. Signed-off-by: Sumant Patro <sumant.patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-02-16[SCSI] megaraid_sas: replace pci_alloc_consitent with dma_alloc_coherent in ↵Sumant Patro
ioctl path Replaced pci_alloc_consistent with dma_alloc_coherent from the ioctl path. This is to avoid situations where ioctl fails for lack of memory (when system under heavy stress). Signed-off-by: Sumant Patro <sumant.patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-02-16[SCSI] megaraid_sas: add bios_param in scsi_host_templateSumant Patro
Signed-off-by: Sumant Patro <sumant.patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-02-16[SCSI] megaraid_sas: do not process cmds if hw_crit_error is setSumant Patro
Checks if hw_crit_error is set. If it is set, we donot process commands. Checks added in megasas_queue_command and command completion routines. Signed-off-by: Sumant Patro <sumant.patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-02-12[PATCH] mark struct file_operations const 6Arjan van de Ven
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-01-06[SCSI] megaraid_sas: Update module authorSumant Patro
Update domain name change from lsil.com to lsi.com. Change module author to megaraidlinux@lsi.com Signed-off-by: Sumant Patro <sumant.patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-11-22[SCSI] megaraid_sas: make 2 functions staticAdrian Bunk
This patch makes two needlessly global functions static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: "Patro, Sumant" <Sumant.Patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-04[SCSI] SCSI megaraid_sas: handle thrown errorsJeff Garzik
- handle clear_user() error - handle and properly unwind from sysfs errors thrown during mod init - adjust order of calls in megasas_exit() to precisely match registration order in megasas_init() Signed-off-by: Jeff Garzik <jeff@garzik.org> Updated for extra attribute and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-04[SCSI] megaraid_sas: sets ioctl timeout and updates version,changelogSumant Patro
This patch sets timeout of max 180 seconds for ioctl completion. It also updates the Changelog and hikes the version to 3.05. Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-04[SCSI] megaraid_sas: adds tasklet for cmd completionSumant Patro
This patch adds a tasklet for command completion. Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-04[SCSI] megaraid_sas: prints pending cmds before setting hw_crit_errorSumant Patro
This patch adds function to print the pending frame details before returning failure from the reset routine. It also exposes a new variable megasas_dbg_lvl that allows the user to set the debug level for logging. Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-04[SCSI] megaraid_sas: function pointer for disable interruptSumant Patro
This patch adds function pointer to invoke disable interrupt for xscale and ppc IOP based controllers. Removes old implementation that checks for controller type in megasas_disable_intr. Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-04[SCSI] megaraid_sas: frame count optimizationSumant Patro
This patch removes duplicated code in frame calculation & adds megasas_get_frame_count() that also takes into account the number of frames that can be contained in the Main frame. FW uses the frame count to pull sufficient number of frames from host memory. Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-04[SCSI] megaraid_sas: FW transition and q size changesSumant Patro
This patch has the following enhancements : a. handles new transition states of FW to support controller hotplug. b. It reduces by 1 the maximum cmds that the driver may send to FW. c. Sends "Stop Processing" cmd to FW before returning failure from reset routine d. Adds print in megasas_transition routine e. Sends "RESET" flag to FW to do a soft reset of controller to move from Operational to Ready state. f. Sending correct pointer (cmd->sense) to pci_pool_free Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-19[SCSI] megaraid_sas: pci_module_init to pci_register_driver conversionMichal Piotrowski
Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Acked-by: "Patro, Sumant" <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-19[SCSI] convert to PCI_DEVICE() macroHenrik Kretzschmar
Convert the pci_device_id-table of the megaraid_sas-driver to the PCI_DEVICE-macro, to safe some lines. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Acked-by: "Patro, Sumant" <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-07-03Merge ../scsi-misc-2.6James Bottomley
Conflicts: drivers/scsi/nsp32.c drivers/scsi/pcmcia/nsp_cs.c Removal of randomness flag conflicts with SA_ -> IRQF_ global replacement. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-07-02[PATCH] irq-flags: scsi: Use the new IRQF_ constantsThomas Gleixner
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-26[SCSI] megaraid_sas: zcr with fixSumant Patro
The patch adds support for a ZCR controller (Device ID : 0x413). It also has a critical bug fix : Disable controller interrupt before firing INIT cmd to FW. Interrupt is enabled after required initialization is over. This is done to ensure that driver is ready to handle interrupts when it is generated by the controller. Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-06-06[SCSI] megaraid_sas: switch fw_outstanding to an atomic_tSumant Patro
This patch( originally submitted by Christoph Hellwig) removes instance_lock and changes fw_outstanding variable data type to atomic_t. Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-03-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: fixed path to moved file in include/linux/device.h Fix spelling in E1000_DISABLE_PACKET_SPLIT Kconfig description Documentation/dvb/get_dvb_firmware: fix firmware URL Documentation: Update to BUG-HUNTING Remove superfluous NOTIFY_COOKIE_LEN define add "tags" to .gitignore Fix "frist", "fisrt", typos fix rwlock usage example It's UTF-8
2006-03-22Fix "frist", "fisrt", typosUwe Zeisberger
Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-03-14[SCSI] megaraid_sas: fix extended timeout handlingChristoph Hellwig
Replace the eh_timed_out method usage with setting sdev->timeout in slave_configure. Also only use the extended timeout for raid volumes, physical devices shouldn't need it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-02-27[SCSI] megaraid_sas: fix physical disk handlingChristoph Hellwig
This patch hides the devices completely from the midlayer instead. It requires the patch to handle the slave_configure failure I posted earlier. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-02-04[SCSI] megaraid_sas: support for 1078 type controller addedSumant Patro
This patch adds support for 1078 type controller (device id : 0x60). Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-02-04[SCSI] megaraid_sas: register 16 byte CDB capabilityJoshua Giles
This patch properly registers the 16 byte command length capability of the megaraid_sas controlled hardware with the scsi midlayer. All megaraid_sas hardware supports 16 byte CDB's. Signed-off-by: Joshua Giles <joshua_giles@dell.com> Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-01-29[SCSI] megaraid_sas: new template defined to represent each type of controllersSumant Patro
This patch defines a new template to represent each type of controllers (identified by the processor used). The template has members that is set with appropriate values during driver initialisation. This change is done to support new controllers with minimal change to existing code. In future, for a new controller support, a template will be declared and its members initialised appropriately. Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Rejections fixed and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-01-29[SCSI] megaraid_sas: cleanup queue command pathSumant Patro
This patch (originally submitted by Christoph Hellwig) removes code duplication in megasas_build_cmd. It also defines MEGASAS_IOC_FIRMWARE32 to allow 64 bit compiled applications to work. Signed-off-by: Sumant Patro <Sumant.Patro@lsil.com> Rejections fixed and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-01-14[PATCH] Unlinline a bunch of other functionsArjan van de Ven
Remove the "inline" keyword from a bunch of big functions in the kernel with the goal of shrinking it by 30kb to 40kb Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-12[SCSI] turn most scsi semaphores into mutexesArjan van de Ven
the scsi layer is using semaphores in a mutex way, this patch converts these into using mutexes instead Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-11-10Merge by hand (whitespace conflicts in libata.h)James Bottomley
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-11-09[PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reasonOlaf Hering
This patch removes almost all inclusions of linux/version.h. The 3 #defines are unused in most of the touched files. A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is unfortunatly in linux/version.h. There are also lots of #ifdef for long obsolete kernels, this was not touched. In a few places, the linux/version.h include was move to where the LINUX_VERSION_CODE was used. quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'` search pattern: /UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-06[SCSI] megaraid_sas: fix EH lockingChristoph Hellwig
recent kernels call the eh_ methods without the host lock held. megaraid_sas doesn't need it but drops it before calling a sleeping routine and reqcquires it afterwards. Just remove the spin_unlock/spin_lock calls. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-28[SCSI] use sfoo_printk() in driversJeff Garzik
Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-04[PATCH] missing include in megaraid_sasAl Viro
megaraid_sas depends on arch-specific indirect includes pulling fs.h in; on alpha they do not. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>