Commit Graph

54 Commits

Author SHA1 Message Date
Jens Axboe 242f9dcb8b block: unify request timeout handling
Right now SCSI and others do their own command timeout handling.
Move those bits to the block layer.

Instead of having a timer per command, we try to be a bit more clever
and simply have one per-queue. This avoids the overhead of having to
tear down and setup a timer for each command, so it will result in a lot
less timer fiddling.

Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-10-09 08:56:13 +02:00
James Bottomley d3f46f39b7 [SCSI] remove use_sg_chaining
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>
2008-01-30 13:14:02 -06:00
Nathan Lynch de15c2017c [SCSI] sym53c8xx: fix bad memset argument in sym_set_cam_result_error
On a big powerpc box I got the following oops with 2.6.24-git2:

sym0: <1010-66> rev 0x1 at pci 0000:d0:01.0 irq 215
sym0: No NVRAM, ID 7, Fast-80, LVD, parity checking
sym0: SCSI BUS has been reset.
scsi0 : sym-2.2.3
 target0:0:8: FAST-40 WIDE SCSI 80.0 MB/s ST (25 ns, offset 31)
scsi 0:0:8:0: Direct-Access     IBM      ST318305LC       C509 PQ: 0
ANSI: 3
 target0:0:8: tagged command queuing enabled, command queue depth 16.
 target0:0:8: Beginning Domain Validation
 target0:0:8: asynchronous
 target0:0:8: wide asynchronous
 target0:0:8: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 31)
 target0:0:8: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 31)
Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc000000000038460
cpu 0x25: Vector: 300 (Data Access) at [c00000000f567840]
    pc: c000000000038460: .memcpy+0x60/0x280
    lr: d000000000050280: .sym_set_cam_result_error+0xfc/0x1e0 [sym53c8xx]
    sp: c00000000f567ac0
   msr: 8000000000009032
   dar: 0
 dsisr: 42000000
  current = 0xc000006d1e0af0a0
  paca    = 0xc0000000004afc00
    pid   = 0, comm = swapper
enter ? for help
[link register   ] d000000000050280
.sym_set_cam_result_error+0xfc/0x1e0 [sym53c8xx]
[c00000000f567ac0] c00000000f567b80 (unreliable)
[c00000000f567b80] d0000000000552b8 .sym_complete_error+0x12c/0x1bc [sym53c8xx]
[c00000000f567c20] d0000000000561a4 .sym_int_sir+0xaa4/0x1718 [sym53c8xx]
[c00000000f567d00] d000000000057e8c .sym_interrupt+0x4e4/0x6ec [sym53c8xx]
[c00000000f567dc0] d00000000004fdf4 .sym53c8xx_intr+0x6c/0xdc [sym53c8xx]
[c00000000f567e50] c0000000000a83e0 .handle_IRQ_event+0x7c/0xec
[c00000000f567ef0] c0000000000aa344 .handle_fasteoi_irq+0x130/0x1f0
[c00000000f567f90] c00000000002a538 .call_handle_irq+0x1c/0x2c
[c000004d5e0b3a90] c00000000000c320 .do_IRQ+0x108/0x1d0
[c000004d5e0b3b20] c000000000004790 hardware_interrupt_entry+0x18/0x1c

The memset() in sym_set_cam_result_error() would appear to be trashing
the scsi_cmnd struct instead of clearing sense_buffer.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-30 13:03:38 -06:00
FUJITA Tomonori b80ca4f7ee [SCSI] replace sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE
This replaces sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE in
several LLDs. It's a preparation for the future changes to remove
sense_buffer array in scsi_cmnd structure.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23 11:29:27 -06:00
Krzysztof Helt d9aa3af09c [SCSI] sym53c8xx: fixes two bugs related to chip reset
This patch fixes two bugs pointed by James Bottomley:

 1. the if (!sym_data->io_reset).  That variable is only ever filled
    by a stack based completion.  If we find it non empty it means
    this code has been entered twice and we have a severe problem,
    so that should just become a BUG_ON(sym_data->io_reset).
 2. sym_data->io_reset should be set to NULL before the routine is
    exited otherwise the PCI recovery code could end up completing
    what will be a bogus pointer into the stack.

Big thanks to James Bottomley for help with the patch.

Signed-off-by: Krzysztof Helt <krzysztof.h1@w.pl>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23 11:29:25 -06:00
Randy Dunlap 864473bbbb [SCSI] sym2: fix section mismatch warning
Fix section mismatch warning:

WARNING: vmlinux.o(.text+0x1ff3a2): Section mismatch: reference to .exit.text:sym2_remove (between 'sym2_io_error_detected' and 'sym_xpt_done')

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:27:56 -06:00
Tony Battersby 7ee2413ca0 [SCSI] sym53c8xx: fix free_irq() regression
The following commit changed the pointer passed to request_irq(), but
failed to change the pointer passed to free_irq():

commit 99c9e0a1d6
Author: Matthew Wilcox <matthew@wil.cx>
Date:   Fri Oct 5 15:55:12 2007 -0400

    [SCSI] sym53c8xx: Make interrupt handler capable of returning IRQ_NONE

    ...

The result is that free_irq() doesn't actually take any action.  This
patch fixes it.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-12-18 16:03:09 -06:00
Matthew Wilcox aac6a5a340 [SCSI] sym53c8xx: Remove sym_xpt_async_sent_bdr
This function just printed a message to the user; move the print to its
only caller, and turn it into an starget_printk.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:26:56 -04:00
Matthew Wilcox 5111eefa17 [SCSI] sym53c8xx: Remove pci_dev pointer from sym_shcb
This structure is accessed by the device; the fewer Linux things in it,
the better.  Using the pci_dev pointer from the hostdata requires a lot
of changes:

 - Pass Scsi_Host to a lot of routines which currently take a sym_hcb.
 - Set the Scsi_Host as the pci drvdata (instead of the sym_hcb)

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:26:34 -04:00
Matthew Wilcox 99c9e0a1d6 [SCSI] sym53c8xx: Make interrupt handler capable of returning IRQ_NONE
Make sym_interrupt return an irqreturn_t instead of void, and take a
Scsi_Host instead of a sym_hcb.  Pass the Scsi_Host to the interrupt
handler instead of the sym_hcb.  Rename the host_data to sym_data.
Keep a pci_dev pointer in the sym_data.  Rename the Scsi_Host from
instance to shost.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:23:28 -04:00
Matthew Wilcox 8022fbdacb [SCSI] sym53c8xx: Get rid of IRQ_FMT and IRQ_PRM
These macros aren't needed any more.  They used to be used for SPARC.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:17:36 -04:00
Matthew Wilcox 3fb364e089 [SCSI] sym53c8xx: Use scmd_printk where appropriate
If we have a scsi_cmnd, it gives the user more information than the
sym_name, and maybe the target.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:12:59 -04:00
Matthew Wilcox 4d85b47159 [SCSI] sym53c8xx: Simplify DAC DMA handling
By introducing the use_dac(), set_dac() and DMA_DAC_MASK macros, we can
eliminate a lot of ifdefs from the code.  We now rely on the compiler to
optimise away a few things that we'd formerly relied on the preprocessor
to do.  This makes sym_setup_bus_dma_mask() small enough to inline into
its only caller.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:12:36 -04:00
Matthew Wilcox a44131b35e [SCSI] sym53c8xx: Remove tag_ctrl module parameter
With sysfs making these options tunable at runtime, there's no
justification for keeping this horrendously complex specification
string around.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:11:57 -04:00
Matthew Wilcox 8637baa360 [SCSI] sym53c8xx: Remove io_ws, mmio_ws and ram_ws elements
These struct elements record info that is never needed

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:11:37 -04:00
Matthew Wilcox e58bc06ed0 [SCSI] sym53c8xx: Remove ->device_id
Following the same path as ->revision_id, remove ->device_id

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:11:10 -04:00
Matthew Wilcox bd678450bf [SCSI] sym53c8xx: Use pdev->revision
Auke missed the sym2 driver in his initial sweep.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:10:55 -04:00
Linas Vepstas d68cd75992 [SCSI] sym53c8xx: PCI Error Recovery support
This patch adds the PCI error recovery callbacks to the Symbios SCSI device
driver.  It includes support for First Failure Data Capture.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

Assorted changes to initial patches, including returning IRQ_NONE from the
interrupt handler if the device is offline and re-using the eh_done completion
in the scsi error handler.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:10:20 -04:00
Matthew Wilcox 2ba6536772 [SCSI] sym53c8xx: Stop overriding scsi_done
Instead of telling the reset routine that the command completed from
sym_eh_done, do it from sym_xpt_done.  The 'to_do' element of the ucmd
is redundant -- it serves only to tell whether eh_done is valid or not,
and we can tell this by checking to see if it's NULL.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:09:41 -04:00
Matthew Wilcox 6c9746b363 [SCSI] sym53c8xx: Don't disable interrupts in the interrupt handler
Interrupts can't be re-entered, so it's sufficient to call spin_lock, not
spin_lock_irqsave().

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:09:27 -04:00
Matthew Wilcox 71c222dc45 [SCSI] sym53c8xx: Remove unnecessary check in queuecommand
The midlayer won't scan the host ID, so we don't need to check.
This is the only caller of sym_xpt_done2, so remove that too.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:09:04 -04:00
Matthew Wilcox 39c05d1e3c [SCSI] sym53c8xx: Remove data_mapping and data_mapped
Before all commands used sg, data_mapping and data_mapped were used to
distinguish whether the command had used map_single or map_sg.  Now all
commands are sg, so we can delete data_mapping, data_mapped and the
wrapper functions __unmap_scsi_data, __map_scsi_sg_data, unmap_scsi_data
and map_scsi_sg_data.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:08:26 -04:00
Matthew Wilcox f363abff55 [SCSI] sym53c8xx: Use pci_dev irq number
Don't cache a private copy of the interrupt number

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:08:07 -04:00
Kai Makisara 34996acc55 [SCSI] sym53c8xx: Work around 53c896 erratum
Prevent DMA transfers from crossing the 16MB limit for early 53c896 chips.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-23 15:07:45 -04:00
FUJITA Tomonori 9cb83c7529 [SCSI] add use_sg_chaining option to scsi_host_template
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>
2007-10-16 11:24:32 +02:00
Chip Coldwell 147e505e23 [SCSI] sym53c8xx: don't claim cpqarray device
Apropos this thread

http://marc.theaimsgroup.com/?l=linux-scsi&m=115591706804045&w=2

which led to this patch

http://www.kernel.org/git/?p=linux/kernel/git/jejb/scsi-rc-fixes-2.6.git;a=commit;h=b2b3c121076961333977f485f0d54c22121df920

We also need to fix sym53c8xx only to bind to the PCI ID if it is of
device class PCI_CLASS_STORAGE_SCSI (otherwise it will be the cpqarray
RAID device).

Signed-off-by: Chip Coldwell <coldwell@redhat.com>
Cc: Matthew Wilcox <willy@debian.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-07-24 18:38:46 -04:00
FUJITA Tomonori 938febd62b [SCSI] sym53c8xx: convert to use the data buffer accessors
- remove the unnecessary map_single path.

- convert to use the new accessors for the sg lists and the
parameters.

Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-07-15 10:00:32 -05:00
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
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)
2006-10-05 15:10:12 +01:00
Grant Grundler b2b3c12107 [SCSI] sym2: claim only "Storage" class
The follow patch fixes a problem for Matt Taggart.
The Compaq system he had (dl380?) has a SmartArray device that exposes
the 53c1510 device in both RAID and "normal" modes. The difference
is in RAID mode, the smart array driver (IIRC) should claim the
device instead of sym2 driver. Patch below prevents sym2 from
claiming the device when the RAID "daughter board" is attached.

Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-07-28 11:46:38 -05:00
Thomas Gleixner 1d6f359a2e [PATCH] irq-flags: scsi: Use the new IRQF_ constants
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>
2006-07-02 13:58:53 -07:00
Linus Torvalds 28e4b22495 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (85 commits)
  [SCSI] 53c700: remove reliance on deprecated cmnd fields
  [SCSI] hptiop: don't use cmnd->bufflen
  [SCSI] hptiop: HighPoint RocketRAID 3xxx controller driver
  [SCSI] aacraid: small misc. cleanups
  [SCSI] aacraid: Update supported product information
  [SCSI] aacraid: Fix return code interpretation
  [SCSI] scsi_transport_sas: fix panic in sas_free_rphy
  [SCSI] remove RQ_SCSI_* flags
  [SCSI] remove scsi_request infrastructure
  [SCSI] mptfusion: change driver revision to 3.03.10
  [SCSI] mptfc: abort of board reset leaves port dead requiring reboot
  [SCSI] mptfc: fix fibre channel infinite request/response loop
  [SCSI] mptfc: set fibre channel fw target missing timers to one second
  [SCSI] mptfusion: move fc event/reset handling to mptfc
  [SCSI] spi transport: don't allow dt to be set on SE or HVD buses
  [SCSI] aic7xxx: expose the bus setting to sysfs
  [SCSI] scsi: remove Documentation/scsi/cpqfc.txt
  [SCSI] drivers/scsi: Use ARRAY_SIZE macro
  [SCSI] Remove last page_address from dc395x.c
  [SCSI] hptiop: HighPoint RocketRAID 3xxx controller driver
  ...

Fixed up conflicts in drivers/message/fusion/mptbase.c manually (due to
the sparc interrupt cleanups)
2006-06-21 11:18:25 -07:00
David S. Miller c6387a48cf [SPARC]: Kill __irq_itoa().
This ugly hack was long overdue to die.

It was a way to print out Sparc interrupts in a more freindly format,
since IRQ numbers were arbitrary opaque 32-bit integers which vectored
into PIL levels.  These 32-bit integers were not necessarily in the
0-->NR_IRQS range, but the PILs they vectored to were.

The idea now is that we will increase NR_IRQS a little bit and use a
virtual<-->real IRQ number mapping scheme similar to PowerPC.

That makes this IRQ printing hack irrelevant, and furthermore only a
handful of drivers actually used __irq_itoa() making it even less
useful.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-20 01:21:29 -07:00
Christoph Hellwig 5d5ff44fe6 [SCSI] fix up request buffer reference in various scsi drivers
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>
2006-06-06 11:07:25 -04:00
Matthew Wilcox d637c4543f [SCSI] sym2: Fix build when spinlock debugging is enabled
When spinlock debugging is turned on, a struct completion grows beyond the
size allowed for the scsi_pointer.  So move the struct completion back onto
the stack.  The additional memory barriers are to keep us from completing
a random piece of kernel stack if the command happens to complete after
the error handling has finished.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-13 10:13:30 -05:00
Matthew Wilcox 14ac8bf58d [SCSI] Enable clustering and large transfers
This patch enables clustering and sets max_sectors to 0xffff to enable
reading and writing of large blocks with tapes (and large transfers with
sg). This change is needed after the sg and st drivers started using
chained bios through scsi_request_async() in 2.6.16.

Signed-off-by: Kai Makisara <kai.makisara@kolumbus.fi>
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-13 10:13:26 -05:00
Matthew Wilcox b4e93a739e [SCSI] Simplify error handling
Use wait_for_completion_timeout() instead of using a timer (as
Christoph Hellwig did for aic7xxx).

That lets me eliminate the sym_eh_wait structure; the struct completion,
the old_done pointer and the to_do flag can be folded into the sym_ucmd
(which overrides the scsi_pointer in scsi_cmnd).

The sym_eh_done() function becomes much simpler as the timeout handling
is done in sym_eh_handler() directly.

The host_lock can be unlocked earlier, and I cache the host in
a local variable to make accesses to it quicker.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-13 10:13:25 -05:00
Matthew Wilcox 3bea15a76e [SCSI] Disable sym2 driver queueing
Undef SYM_OPT_HANDLE_DEVICE_QUEUEING.
Call sym_put_start_queue instead of sym_start_next_ccbs.
Turn asserts into checks that we can send the command to the adapter,
and return busy from queuecommand if we can't.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-13 10:13:24 -05:00
Matthew Wilcox ab19d52bec [SCSI] Simplify error handling a bit
- to_do was never set to SYM_EH_DO_COMPLETE, so remove that code
 - move the spinlocks inside the common error handler code path

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-13 10:13:23 -05:00
Matthew Wilcox b6d105d7ee [SCSI] Use pcibios_resource_to_bus()
We had our own code (pci_get_base_address()) to get the bus address of
a BAR.  We can get this using pcibios_resource_to_bus() instead.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-13 10:13:23 -05:00
Matthew Wilcox 1f61d82490 [SCSI] Change Kconfig option from IOMAPPED to MMIO
Most of the Kconfig options for switching between IO Port and MMIO
operations use the opposite sense from sym2.  Really, this option
should be set at a chipset level rather than per-driver.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-04-13 10:13:22 -05:00
Matthew Wilcox 66e8d1cc64 [SCSI] sym2: Report disabled devices and LUNs more attractively
Rather than print a list of targets at driver init time, print each
disabled target as we attempt to scan it.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-12-13 18:11:47 -07:00
Matthew Wilcox b37df48923 [SCSI] sym2: Allow NVRAM settings to limit speed and width
The NVRAM for both Tekram and Symbios boards allows the user to set the
speed and width for individual targets.  I took that code out in March
2004 when we introduced Domain Validation, but it seems there's still
a legitimate need for it in some configurations.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-12-13 18:11:45 -07:00
Matthew Wilcox 1e8eb21ea7 [SCSI] sym2: Use DMA_40BIT_MASK constant
Now that this constant has been added to dma-mapping.h, we don't need our
own definition

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-12-13 18:11:41 -07:00
Matthew Wilcox 44f30b0f59 [SCSI] sym2: Remove code to handle DMA_BIDIRECTION requests
The upper layer doesn't send these down since 2.4.x (or 2.6 in
practice), so no need to handle it.  Inline sym_setup_data_pointers
into its only caller so we can fail gracefully in the case we'd get
one neverless.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-12-13 18:11:39 -07:00
Matthew Wilcox 84e203a279 [SCSI] sym2: Manage sym_lcb properly
Allocate the lcb in slave_alloc and free it in slave_destroy.  This allows
us to remove all the code that checks to see if it's already been allocated.

From: Christoph Hellwig <hch@lst.de>
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-12-13 18:11:33 -07:00
Matthew Wilcox 8b2f81385a [SCSI] sym2: Disable IU and QAS negotiation
Enabling these features causes problems with some drives, so disable
them until they're debugged

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-12-01 15:59:50 -06:00
Jeff Garzik df0ae2497d [SCSI] allow sleeping in ->eh_host_reset_handler()
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-17 12:05:18 -05:00
Jeff Garzik 68b3aa7c98 [SCSI] allow sleeping in ->eh_bus_reset_handler()
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-17 12:05:10 -05:00
Jeff Garzik 94d0e7b805 [SCSI] allow sleeping in ->eh_device_reset_handler()
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-17 12:05:03 -05:00
Jeff Garzik 8fa728a268 [SCSI] allow sleeping in ->eh_abort_handler()
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-17 12:04:55 -05:00