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  1. 18 2月, 2008 1 次提交
  3. 31 1月, 2008 1 次提交
    • J
      [SCSI] remove use_sg_chaining · d3f46f39
      由 James Bottomley 提交于 
      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: NJames Bottomley <James.Bottomley@HansenPartnership.com>
      d3f46f39
  5. 12 1月, 2008 1 次提交
  7. 23 10月, 2007 1 次提交
  9. 16 10月, 2007 1 次提交
  11. 13 10月, 2007 1 次提交
  13. 05 10月, 2007 1 次提交
  15. 01 6月, 2007 1 次提交
  17. 27 5月, 2007 1 次提交
  19. 09 5月, 2007 2 次提交
  21. 03 5月, 2007 1 次提交
  23. 16 2月, 2007 1 次提交
  25. 13 2月, 2007 1 次提交
  27. 06 12月, 2006 1 次提交
    • J
      [SCSI] megaraid: fix MMIO casts · 00769ec4
      由 Jeff Garzik 提交于 
      megaraid's MMIO RD*/WR* macros directly call readl() and writel() with
an 'unsigned long' argument.  This throws a warning, but is otherwise OK
because the 'unsigned long' is really the result of ioremap().  This
setup is also OK because the variable can hold an ioremap cookie /or/ a
PCI I/O port (PIO).

However, to fix the warning thrown when readl() and writel() are passed
an unsigned long cookie, I introduce 'void __iomem *mmio_base', holding
the same value as 'base'.  This will silence the warnings, and also
cause an oops whenever these MMIO-only functions are ever accidentally
passed an I/O address.
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      00769ec4
  29. 05 10月, 2006 1 次提交
    • D
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      由 David Howells 提交于 
      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
  31. 24 9月, 2006 1 次提交
  33. 07 8月, 2006 1 次提交
    • M
      [SCSI] Improve inquiry printing · 4ff36718
      由 Matthew Wilcox 提交于 
       - Replace scsi_device_types array API with scsi_device_type function API.
   Gets rid of a lot of common code, as well as being easier to use.
 - Add the new device types in SPC4 r05a, and rename some of the older ones.
 - Reformat the printing of inquiry data; now fits on one line and
   includes PQ.

I think I've addressed all the feedback from the previous versions.  My
current test box prints:

scsi 2:0:1:0: Direct access     HP 18.2G ATLAS10K3_18_SCA HP05 PQ: 0 ANSI: 2
Signed-off-by: NMatthew Wilcox <matthew@wil.cx>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      4ff36718
  35. 03 7月, 2006 1 次提交
  37. 23 6月, 2006 1 次提交
  39. 06 6月, 2006 1 次提交
  41. 20 4月, 2006 1 次提交
  43. 29 3月, 2006 1 次提交
  45. 13 2月, 2006 1 次提交
  47. 13 1月, 2006 1 次提交
  49. 14 12月, 2005 1 次提交
  51. 08 12月, 2005 1 次提交
  53. 30 11月, 2005 1 次提交
  55. 10 11月, 2005 1 次提交
  57. 07 11月, 2005 1 次提交
  59. 03 10月, 2005 1 次提交
    • J
      [SCSI] Legacy MegaRAID: Fix READ CAPACITY · 51c928c3
      由 James Bottomley 提交于 
      Some Legacy megaraid cards can't actually cope with the scatter/gather
version of the READ CAPACITY command (which is what we now send them
since altering all SCSI internal I/O to go via the block layer).  Fix
this (and a few other broken megaraid driver assumptions) by sending
the non-sg version of the command if the sg list only has a single
element.
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      51c928c3
  61. 28 6月, 2005 1 次提交
  63. 27 6月, 2005 1 次提交
  65. 26 6月, 2005 1 次提交
  67. 22 6月, 2005 1 次提交
  69. 18 6月, 2005 1 次提交
  71. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      由 Linus Torvalds 提交于 
      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!
      1da177e4