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path: root/drivers/scsi/ips.c
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2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells1-2/+2
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: remove hosts.hHenne1-6/+0
Remove the obsolete hosts.h file under drivers/scsi. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-03[SCSI] scsi: Convertion to struct scsi_cmnd in ips-driverHenne1-45/+38
Converts the obsolete Scsi_Cmnd to struct scsi_cmnd in the ips-driver. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-10-01[SCSI] Switch ips to pci_register from pci_moduleAlan Cox1-1/+1
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-07-02[PATCH] irq-flags: scsi: Use the new IRQF_ constantsThomas Gleixner1-2/+2
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>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel1-1/+0
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-26spelling fixesAndreas Mohr1-2/+2
acquired (aquired) contiguous (contigious) successful (succesful, succesfull) surprise (suprise) whether (weather) some other misspellings Signed-off-by: Andreas Mohr <andi@lisas.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-10[SCSI] drivers/scsi: Use ARRAY_SIZE macroTobias Klauser1-1/+1
Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove duplicates of the macro. Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-06-06[SCSI] fix up request buffer reference in various scsi driversChristoph Hellwig1-1/+1
Various scsi drivers use scsi_cmnd.buffer and scsi_cmnd.bufflen in their queuecommand functions. Those fields are internal storage for the midlayer only and are used to restore the original payload after request_buffer and request_bufflen have been overwritten for EH. Using the buffer and bufflen fields means they do very broken things in error handling. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-03-28[PATCH] Replace 0xff.. with correct DMA_xBIT_MASKMatthias Gehre1-2/+3
Replace all occurences of 0xff.. in calls to function pci_set_dma_mask() and pci_set_consistant_dma_mask() with the corresponding DMA_xBIT_MASK from linux/dma-mapping.h. Signed-off-by: Matthias Gehre <M.Gehre@gmx.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-27[SCSI] don't call ips_eh_reset in ips_queue to avoid deadlockMike Christie1-1/+1
When the locking was changed in the eh code ips_eh_reset was changed so that it was a wraper around __ips_eh_reset and all ips_eh_reset does is grab the host lock and then calls __ips_eh_reset. In the queuecommand, ips_queue is called with the host_lock held so if it calls ips_eh_reset we will have a problem. This patch just has ips_queue call __ips_eh_reset. Patch is only compile tested. I do not have the HW. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: Hammer, Jack <Jack_Hammer@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-01-31[SCSI] ServeRAID: prevent seeing DADSI devicesJack Hammer1-12/+14
A critical thing the ServeRAID driver MUST do is hide the physical DASDI devices from the OS. It does this by intercepting the INQUIRY commands. In recent 2.6.15 testing, I discovered this to be failing. The cause was the driver assuming that the INQUIRY response data was in a simple single buffer, when it was actually a 1 element scatter gather list. This patch makes ips always look at the correct data when examining an INQUIRY response. Signed-off-by: Jack Hammer <jack_hammer@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-01-26[SCSI] ips soft lockup during reset/initializationJack Hammer1-14/+14
Resetting the adapter causes the ServeRAID driver to exceed the max time allowed by the softlock watchdog. Resetting the hardware can easily require 30 or more seconds. To avoid the "BUG: soft lockup detected on CPU#0!" result, this patch replaces the mdelay() calls in the initialization/reset routines with msleep(). Signed-off-by: Jack Hammer <jack_hammer@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-01-14[SCSI] ips: Mode Sense (Caching Page ) fixJack Hammer1-0/+3
To avoid the "sda: got wrong page" message, the ServeRAID driver should be setting flags indicating that the Mode Sense commands are not supported. Signed-off-by: Jack Hammer <jack_hammer@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-11-09[SCSI] remove Scsi_Device typedefChristoph Hellwig1-3/+3
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-11-09[SCSI] remove Scsi_Host_Template typedefChristoph Hellwig1-3/+3
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-11-08Merge by hand (conflicts between pending drivers and kfree cleanups)James Bottomley1-135/+3
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-11-07[PATCH] kfree cleanup: drivers/scsiJesper Juhl1-12/+6
This is the drivers/scsi/ part of the big kfree cleanup patch. Remove pointless checks for NULL prior to calling kfree() in drivers/scsi/. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Acked-by: Kai Makisara <kai.makisara@kolumbus.fi> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-06[SCSI] ips: remove "Version Matching"Jack Hammer1-135/+3
IBM has finally agreed that the "Version Matching" between firmware and drivers ( and the resulting warning messages ) is no longer necessary. This patch will remove those functions from the ServeRAID driver. Signed-off-by: Jack Hammer <jack_hammer@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-11-04Fix ips.c compileJames Bottomley1-0/+1
It looks like one of the ips patches was missing a closing brace in a function Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-31[SCSI] ips: Fix initialization bug with kdumpJack Hammer1-0/+93
If I/O is active on the adapter, and an unexpected interrupt is pending during initialization, the driver blows it's brains out. Since the driver didn't initiate the I/O, the data in it's internal tables will contain NULL pointers. When this condition is detected, a "flush cache and reset" is performed. The flush cache allows any pending "lazy writes" that the adapter is processing to complete ( a "must have" for a RAID adapter ) and the reset puts the adapter back into a known, good state. Signed-off-by: Jack Hammer <jack_hammer@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-29[SCSI] ips: Fix up for correct scatter/gather processingJack Hammer1-13/+36
Added kmap_atomic/kunmap_atomic. Added protection of KM_IRQ0 slot with local_irq_save(), local_irq_restore(), and comments. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-28[SCSI] use scmd_id(), scmd_channel() throughout codeJeff Garzik1-5/+5
Wrap a highly common idiom. Makes the code easier to read, helps pave the way for sdev->{id,channel} removal, and adds a token that can easily by grepped-for in the future. There are a couple sdev_id() and scmd_printk() updates thrown in as well. Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-08-02[SCSI] ServeRAID V7.12.02Jack Hammer1-3/+5
I am resubmitting the 2.6 kernel patch for the Version 7.12.02 ips driver. I have eliminated a couple of inappropriate changes pointed out by Arjan. Signed-off-by: Jack Hammer <jack_hammer@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-17[SCSI] allow sleeping in ->eh_host_reset_handler()Jeff Garzik1-1/+13
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-17[SCSI] allow sleeping in ->eh_abort_handler()Jeff Garzik1-0/+7
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-18[PATCH] remove old scsi data direction macros1-6/+4
these have been wrappers for the generic dma direction bits since 2.5.x. This patch converts the few remaining drivers and removes the macros. Arjan noticed there's some hunk in here that shouldn't. Updated patch below: Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-18[PATCH] scsi: remove meaningless scsi_cmnd->serial_number_at_timeout field1-7/+0
scsi_cmnd->serial_number_at_timeout doesn't serve any purpose anymore. All serial_number == serial_number_at_timeout tests are always true in abort callbacks. Kill the field. Also, as ->pid always equals ->serial_number and ->serial_number doesn't have any special meaning anymore, update comments above ->serial_number accordingly. Once we remove all uses of this field from all lldd's, this field should go. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-04-16Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds1-0/+7491
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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