提交 · cd96d96f20f2509dfeb302548132e30f471c071a · openeuler / Kernel

14 1月, 2007 1 次提交

[SCSI] megaraid_{mm,mbox}: init fix for kdump · cd96d96f

由 Sumant Patro 提交于 1月 05, 2007

1.      Changes in Initialization to fix kdump failure.
        Send SYNC command on loading.
        This command clears the pending commands in the adapter
        and re-initialize its internal RAID structure.
        Without this change, megaraid driver either panics or fails to
        initialize the adapter during kdump's second kernel boot
        if there are pending commands or interrupts from other devices
        sharing the same IRQ.
2.      Authors email-id domain name changed from lsil.com to lsi.com.
        Also modified the MODULE_AUTHOR to megaraidlinux@lsi.com
Signed-off-by: NSumant Patro <sumant.patro@lsi.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

cd96d96f

23 11月, 2006 1 次提交

[SCSI] megaraid_sas: make 2 functions static · b448de47

由 Adrian Bunk 提交于 11月 20, 2006

This patch makes two needlessly global functions static.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Acked-by: N"Patro, Sumant" <Sumant.Patro@lsi.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

b448de47

26 10月, 2006 1 次提交

[SCSI] megaraid_{mm,mbox}: 64-bit DMA capability fix · 031280f6

由 Andrey Mirkin 提交于 10月 16, 2006

It is known that 2 LSI Logic MegaRAID SATA RAID Controllers (150-4 and
150-6) don't support 64-bit DMA. Unfortunately currently this check is
wrong and driver sets 64-bit DMA mode for these devices.
Signed-off-by: NAndrey Mirkin <amirkin@sw.ru>
Acked-by: N"Ju, Seokmann" <Seokmann.Ju@lsi.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

031280f6

16 10月, 2006 1 次提交

[PATCH] scsi: megaraid_{mm,mbox}: 64-bit DMA capability fix · 8741ca71

由 Andrey Mirkin 提交于 10月 16, 2006

It is known that 2 LSI Logic MegaRAID SATA RAID Controllers (150-4 and
150-6) don't support 64-bit DMA.  Unfortunately currently this check is
wrong and driver sets 64-bit DMA mode for these devices.
Signed-off-by: NAndrey Mirkin <amirkin@sw.ru>
Acked-by: NVasily Averin <vvs@sw.ru>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

8741ca71

05 10月, 2006 8 次提交

IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780

由 David Howells 提交于 10月 05, 2006

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: NDavid Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

7d12e780

[SCSI] SCSI megaraid_sas: handle thrown errors · 83aabc1b

由 Jeff Garzik 提交于 10月 04, 2006

- 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: NJeff Garzik <jeff@garzik.org>

Updated for extra attribute and
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

83aabc1b

[SCSI] megaraid_sas: sets ioctl timeout and updates version,changelog · 2a3681e5