linux-toradex.git/drivers/scsi/53c700.h, branch v3.12.5

[SCSI] 53c700: m68k support for the 53c700 SCSI core

2007-06-17T21:15:56+00:00

Add m68k support to the 53c700 SCSI driver

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: James Bottomley

[SCSI] 53c700: Allow setting burst length

2007-01-13T19:44:30+00:00

This is a patch, which allows not only disabling bursting but to specify
different burst lenghts. This feature is needed to get the 53c700 driver
working for the onboard SCSI controller of SNI RM machines, which only
work reliably with a 4 word burst length.

Signed-off-by: James Bottomley

[PATCH] Pass struct dev pointer to dma_cache_sync()

2006-12-07T16:39:41+00:00

Pass struct dev pointer to dma_cache_sync()

dma_cache_sync() is ill-designed in that it does not have a struct device
pointer argument which makes proper support for systems that consist of a
mix of coherent and non-coherent DMA devices hard.  Change dma_cache_sync
to take a struct device pointer as first argument and fix all its callers
to pass it.

Signed-off-by: Ralf Baechle 
Cc: James Bottomley 
Cc: "David S. Miller" 
Cc: Greg KH 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

2006-10-05T14:10:12+00:00

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 
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

[SCSI] 53c700: fix breakage caused by the autosense update

2006-06-29T17:15:15+00:00

A bit of a brown paper bag issue.  The previous patch to remove the soon
to be ripped out fields that were used in autosense actually broke the
driver.  This patch fixes it and has been tested (honestly).

Signed-off-by: James Bottomley

[PATCH] More BUG_ON conversion

2006-06-23T14:43:08+00:00

Signed-off-by: Eric Sesterhenn 
Signed-off-by: Alexey Dobriyan 
Cc: Bartlomiej Zolnierkiewicz 
Cc: Alan Cox 
Cc: James Bottomley 
Acked-by: "Salyzyn, Mark" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[SCSI] 53c700: remove reliance on deprecated cmnd fields

2006-06-20T00:34:01+00:00

This one's quite tricky.  The 53c700 uses the now deprecated fields of
the command structure for saving the prior command when it does
autosense.  To fix this, we have to add extra fields to the LUN to
accommodate a copy of the real command.

Signed-off-by: James Bottomley

[SCSI] 53c700: update endian processing macros

2005-12-16T17:51:01+00:00

This update now allows this driver to be used on big endian bus
machines that aren't parisc.  To do that, the driver must set a
CONFIG_53C700_BE_BUS in Kconfig to compile the right macro versions.

Signed-off-by: James Bottomley

[SCSI] use sfoo_printk() in drivers

2005-10-29T02:04:15+00:00

Rejections fixed up and
Signed-off-by: James Bottomley

[PATCH] finally fix 53c700 to use the generic iomem infrastructure

2005-04-17T01:09:43+00:00

This driver has had it's own different infrastructure for doing this for
ages, but it's time it used the common one.

Signed-off-by: James Bottomley