- gdth_get_status() returns a single device interrupt IStatus
- gdth_interrupt split to __gdth_interrupt() that receives
flags if is called from gdth_wait().
- Use dev_id passed from kernel and do not loop on all
controllers.
- gdth_wait(), get read of all global variables and call the new
__gdth_interrupt with these variables on the stack
Signed-off-by Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Boaz Harrosh [Tue, 2 Oct 2007 21:05:53 +0000 (23:05 +0200)]
[SCSI] gdth: clean up host private data
- Based on same patch from Christoph Hellwig <hch@lst.de>
- Get rid of all the indirection in the Scsi_Host private data and always
put the gdth_ha_str directly into it.
- Change all internal functions prototype to recieve an "gdth_ha_str *ha"
pointer directlly and kill all that redundent access to the "gdth_ctr_tab[]"
controller-table.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The virt_ctr option allows to register a new scsi_host for each bus
on the raid controller. This non-default option makes no sense with
the current scsi code and prevents cleaning up the host registration,
so remove it.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
shuffle scsi_host_template members such that they appear in the
order in which they are defined in the header. this makes is easier
to verify when initializers are missing members.
Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Remove in-source changelog. It's archived permanently in git and
various kernel archives, and changelogs should exist purely in git.
* Remove 2.4.x kernel support. It is an active obstacle to
modernizing this driver, at this point. This includes killing
gdth_kcompat.h which is 100% redundant in modern kernels.
Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Split out isa probing into a helper of it's own. Error handling is
cleaned up, but errors are not propagated yet. Also enclose the isa
probe under the proper CONFIG_ISA symbol instead of the !IA64 hack.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Tue, 2 Oct 2007 20:40:22 +0000 (22:40 +0200)]
gdth: Make one abuse of scsi_cmnd less obvious
Rather than having internal commands abuse scsi_done to call
gdth_scsi_done, have all the places that use to call scsi_done directly
call gdth_scsi_done, which now checks whether the command was internal,
and calls scsi_done if not.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Boaz Harrosh [Mon, 8 Oct 2007 14:36:45 +0000 (16:36 +0200)]
[SCSI] scsi_error: Refactoring scsi_error to facilitate in synchronous REQUEST_SENSE
- Drivers/transports that want to send a synchronous REQUEST_SENSE command
as part of their .queuecommand sequence, have 2 new API's that facilitate
in doing so and abstract them from scsi-ml internals.
void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
struct scsi_eh_save *sesci, unsigned char *cmnd,
int cmnd_size, int sense_bytes)
Will hijack a command and prepare it for request sense if needed.
And will save any later needed info into a scsi_eh_save structure.
Boaz Harrosh [Mon, 8 Oct 2007 14:35:19 +0000 (16:35 +0200)]
[SCSI] scsi_error: code cleanup before refactoring of scsi_send_eh_cmnd()
- regrouped variables for easier reviewing of next patch
- Support of cmnd==NULL in call to scsi_send_eh_cmnd()
- In the @sense_bytes case set transfer size to the minimum
size of sense_buffer and passed @sense_bytes. cmnd[4] is
set accordingly.
- REQUEST_SENSE is set into cmnd[0] so if @sense_bytes is
not Zero passed @cmnd should be NULL.
- Also save/restore resid of failed command.
- Adjust caller
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Gabriel C [Tue, 2 Oct 2007 21:38:02 +0000 (14:38 -0700)]
[SCSI] fdomain: fix CONFIG_PCI=n warnings
I get this warnings on current git when CONFIG_PCI is not set :
drivers/scsi/fdomain.c:390: warning: 'PCI_dev' defined but not used
drivers/scsi/fdomain.c:1768: warning: 'fdomain_pci_tbl' defined but not used
Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Mathew: isn't a module exit routine a little too strong to be calling on the
failure of a single device? Module exit implies that other, non-failing
adaptec raid devices will also get shut down.
Signed-off-by: Joe Korty <joe.korty@ccur.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
[SCSI] scsi_transport_iscsi: add list, mutex includes
scsi/scsi_transport_iscsi.h uses struct mutex and struct list_head,
so while linux/mutex.h and linux/list.h seem to be pulled in indirectly
by one of the headers it includes, the right thing
is to include linux/mutex.h and linus/list.h directly.
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Acked-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Adrian Bunk [Tue, 2 Oct 2007 21:38:09 +0000 (14:38 -0700)]
[SCSI] imm: fix check-after-use
The Coverity checker spotted that we have already oops'ed if "cmd"
was NULL.
Since "cmd" being NULL doesn't seem to be possible at this point this
patch removes the NULL check.
Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Andrew Morton [Tue, 2 Oct 2007 21:37:59 +0000 (14:37 -0700)]
[SCSI] arcmsr: build fix
drivers/scsi/arcmsr/arcmsr_hba.c:129: error: 'arcmsr_pci_error_detected' undeclared here (not in a function)
drivers/scsi/arcmsr/arcmsr_hba.c:130: error: 'arcmsr_pci_slot_reset' undeclared here (not in a function)
Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Adrian Bunk [Tue, 2 Oct 2007 21:38:01 +0000 (14:38 -0700)]
[SCSI] nsp_cs: remove kernel 2.4 code
Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
[SCSI] ibmmca: Remove dead references to MODULE_PARM macro
Remove the useless references to the obsolete MODULE_PARM macro.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:42 +0000 (21:55 -0400)]
[SCSI] advansys: Changes to work on parisc
Change PortAddr to be an unsigned int instead of an unsigned short (IO
Port address are 24 bit on parisc). Fix a couple of printk argument
warnings. Remove the Kconfig marking as 'BROKEN'.
I haven't removed the #warning yet because virt_to_bus/bus_to_virt are
only eliminated for narrow boards. Wide boards need more work.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:41 +0000 (21:55 -0400)]
[SCSI] advansys: Use dma mapping for overrun buffer
Convert the call to virt_to_bus() into a call to dma_map_single(). Some
architectures may require different DMA addresses for different devices,
so allocate one overrun buffer per host rather than one for all cards.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:40 +0000 (21:55 -0400)]
[SCSI] advansys: Remove a couple of uses of bus_to_virt
Replace ASC_VADDR_TO_U32 and ASC_U32_TO_VADDR with an auto-expanding
array that maps pointers to 32-bit IDs and back. One of the uses of
ASC_VADDR_TO_U32 was in error; it should have been using ADV_VADDR_TO_U32.
Also replace the use of virt_to_bus when setting the sense_address with
a call to dma_map_single() followed by dma_cache_sync. This part cribbed
from the 53c700 driver.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:39 +0000 (21:55 -0400)]
[SCSI] advansys: 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.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
- convert the statistics to not distinguish between single and sg xfers
- replace ASC_CEILING with DIV_ROUND_UP
- remove an obsolete comment
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:37 +0000 (21:55 -0400)]
[SCSI] advansys: Move a couple of fields from struct board to struct adv_dvc
board->carrp is a duplicate of asc_dvc->carrier_buf, so cut out the
middle-man and assign directly to carrier_buf. Move orig_reqp to adv_dvc
too, since it's wide-board specific. Also eliminate an unnecessary BUG_ON
(we'll never get there with a NULL carrier_buf, and will crash if we do).
The bulk of this patch is rearranging structures so everything's declared
in the right order.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:36 +0000 (21:55 -0400)]
[SCSI] advansys: Make sdtr_period_tbl a pointer
It's somewhat neater to make this a pointer to one of two tables
than initialising an array in the driver. Also delete the unused
AscSynIndexToPeriod and rename host_init_sdtr_index to min_sdtr_index
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:33 +0000 (21:55 -0400)]
[SCSI] advansys: Sort out debug macros
Replace ASC_DBG{,1,2,3,4,5} with a single variadic macro ASC_DBG. As
suggested by Jeff Garzik, include DRV_NAME and __FUNCTION__ in the output.
Change all callers to no longer include the function name in the string.
Enabling ADVANSYS_DEBUG to test this feature shows a lot of other problems
that need to be fixed:
- Reorder asc_prt_* functions now that their prototypes have been removed.
- There is no longer a struct device in ASC_DVC_CFG/ADV_DVC_CFG, and it
wasn't necessarily a PCI device to begin with. Print the bus_id from
asc_board->dev instead.
- isr_callback no longer exists.
- ASC_DBG_PRT_SCSI_CMND isn't being used, so delete asc_prt_scsi_cmnd
too.
- A missing semicolon
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:31 +0000 (21:55 -0400)]
[SCSI] advansys: Remove asc_board_t typedef and ASC_BOARDP macro
asc_board_t was simply a typedef for struct asc_board. ASC_BOARDP()
can be replaced by shost_priv() except in the ASC_STATS* macros which
rely on the cast; add an explicit cast there.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:30 +0000 (21:55 -0400)]
[SCSI] advansys: Merge ASC_IERR definitions
There were two blocks of ASC_IERR definitions; one for narrow and one for
wide boards. Some of the same names were used (with the same values),
and some of the same values were used with different names. This could
only lead to confusion, so I unified them in one block of definitions
with no overlapping values.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:29 +0000 (21:55 -0400)]
[SCSI] advansys: Sort out irq number mess
The interrupt number was being stored in 4-5 different places, each with
its own type, rules and usage. Fix this by keeping an unsigned int in
the struct asc_board, and filling it in from the bus probe functions
(since it's different for each of the four bus types). In order to do
this, we have to allocate the Scsi_Host in the bus probe functions too.
Then we can return an error from advansys_board_found, which requires
a little rearranging of code (and removing of the err_code variable).
Move the Wide Board flag setting into the PCI bus probe function.
Split the AscGetChipIRQ function into three functions (one for each bus
type that needs it) and add some commentary to explain what's going on.
Also get rid of the AscSetChipIRQ function as we only ever set the
interrupt number to the same value it already had.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:26 +0000 (21:55 -0400)]
[SCSI] advansys: Improve reset handler
- Don't need to set ASC_HOST_IN_RESET any more
- Don't need to test scp->device->host for NULL -- if it's NULL, we
couldn't've been called.
- Use scmd_printk instead of ASC_PRINT
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 3 Oct 2007 01:55:25 +0000 (21:55 -0400)]
[SCSI] advansys: Fix simultaneous calls to ->queuecommand
The narrow board used two global structures to set up a command;
unfortunately they weren't locked, so with two boards in the machine,
one call to queuecommand could corrupt the data being used by the other
call to queuecommand.
Fix this by allocating asc_scsi_q on the stack (64 bytes) and using kmalloc
for the asc_sg_head (2k)
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The wide and narrow boards share identical handling of the return value,
except for some trivial error messages. Move the handling to the common
end of the function. Also move variable declarations to the arms of
the `if' that they're used in and delete some pointless comments.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Tue, 25 Sep 2007 16:42:04 +0000 (12:42 -0400)]
[SCSI] Get rid of scsi_cmnd->done
The ULD ->done callback moves into the scsi_driver. By moving the call
to scsi_io_completion() from scsi_blk_pc_done() to scsi_finish_command(),
we can eliminate the latter entirely. By returning 'good_bytes' from
the ->done callback (rather than invoking scsi_io_completion()), we can
stop exporting scsi_io_completion().
Also move the prototypes from sd.h to sd.c as they're all internal anyway.
Rename sd_rw_intr to sd_done and rw_intr to sr_done.
Inspired-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Tue, 25 Sep 2007 16:42:03 +0000 (12:42 -0400)]
[SCSI] gdth: Stop abusing ->done for internal commands
The ->done member was being used to mark commands as being internal.
I decided to put a magic number in ->underflow instead. I believe this
to be safe as no current user of ->underflow has any of the bottom 9
bits set.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Mon, 1 Oct 2007 14:07:52 +0000 (08:07 -0600)]
[SCSI] qlogicpti: Add a slave_configure method
By configuring targets in slave_configure, we can eliminate a shadow
queuecommand, a shadow scsi_done, a write to the host template, abuse of
SCp->Message and SCp->Status, a use of kmap_atomic() and sniffing the
results of INQUIRY.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
drivers/message/fusion/mptctl.c: In function ‘mptctl_mpt_command’:
drivers/message/fusion/mptctl.c:1764: warning: ‘bufIn.len’ may be used uninitialized in this function
drivers/message/fusion/mptctl.c:1765: warning: ‘bufOut.len’ may be used uninitialized in this function
come because gcc gets confused by some "goto" statements in above
function. The warnings have been verified to be bogus, however, the
function does initialize these later (after the offending goto's) in
the function anyway. So let's move those initializations to top of
function, thereby also shutting up these warnings.
Signed-off-by: Eric Moore <Eric.Moore@lsi.com> Signed-off-by: Satyam Sharma <satyam@infradead.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Eric Moore [Sat, 29 Sep 2007 16:17:49 +0000 (10:17 -0600)]
[SCSI] mptlan: bug fix, only half the message frame is dma'd resulting in corruption
NB = number of blocks. This represents the number of blocks to
transfer. The block size is based on the message frame size provided
in the ioc_facts. A value of zero indicates the entire message frame
should be copied. This is two bit value. So by setting this to
non-zero vaule, you increase performance by reducing amount of data
needing to be dma'd. The value that is stored in ioc->ReqeustNB is
sometimes a non-zero vaule, which creates a bug in mptlan, where not
the entire message frame is getting transfer to firware, resulting in
corruption. This fix sets the default to zero, thus entire message
frame is copied.
Signed-off-by: Eric Moore <Eric.Moore@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Eric Moore [Sat, 29 Sep 2007 16:17:21 +0000 (10:17 -0600)]
[SCSI] mpt fusion: fix up fusion prints using the sdev_printk, dev_printk, and shost_printk API
Cleaning up prints that use the xxx_printk API, in that the fusion
preamble "mptbase: iocX" follows the info provided by the print API.
The way its currently coded, the [H:C:T] print in sdev_printk will be
inbetween "mptbase" and "iocX", instead of before.
Signed-off-by: Eric Moore <Eric.Moore@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Eric Moore [Sat, 29 Sep 2007 16:16:53 +0000 (10:16 -0600)]
[SCSI] mpt fusion: lock down ScsiLookup
ScsiLookup is an array of pending scmd pointers that the scsi lld
maintains. This array is touched from queuecommand, eh threads, and
interrupt context. This array should put under locks, hence this patch
to synchronize its access. I've added some nice little function
wrappers for this, and moved the ScsiLookup array over to MPT_ADAPTER
struct.
Signed-off-by: Eric Moore <Eric.Moore@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 19 Sep 2007 01:54:43 +0000 (19:54 -0600)]
[SCSI] Remove ->pid field from scsi_cmnd
The pid field is a duplicate of the serial_number field and has been
scheduled for removal for a long time. A few drivers were still using
it, so just change them to use serial_number instead.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
It also removes code duplication, each number is now only once in the code to
avoid similar errors in the future.
Signed-off-by: Bernhard Walle <bwalle@suse.de> Acked-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 15 Aug 2007 18:57:00 +0000 (12:57 -0600)]
[SCSI] ips: Close narrow race in release
We were releasing the IRQ before removing the host, so commands could
still be coming in which would never be seen by the interrupt handler.
Just remove the host before releasing the IRQ to close this race.
Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 15 Aug 2007 18:56:55 +0000 (12:56 -0600)]
[SCSI] aic94xx: Free scsi host on error
If an error occurred during initialisation, we would sometimes fail to
call scsi_host_put() and thus end up with a leaked scsi_host. It was
also possible to miss calling scsi_remove_host().
Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 15 Aug 2007 18:56:59 +0000 (12:56 -0600)]
[SCSI] qlogicfas: Close narrow race in release
We were releasing the IRQ before removing the host, so commands could
still be coming in which would never be seen by the interrupt handler.
Just remove the host before releasing the IRQ to close this race.
Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 15 Aug 2007 18:56:57 +0000 (12:56 -0600)]
[SCSI] aha152x: Close narrow race in release
We were releasing the IRQ before removing the host, so commands could
still be coming in which would never be seen by the interrupt handler.
Just remove the host before releasing the IRQ to close this race.
Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 15 Aug 2007 18:56:56 +0000 (12:56 -0600)]
[SCSI] ncr53c8xx: Call scsi_host_put in release
Since ncr53c8xx_attach() calls scsi_host_put(), make ncr53c8xx_release()
call scsi_host_put() too, for symmetry. Both callers already expect
it to put the host for them, so that works out nicely. While the zalon
driver does 'use' the host pointer afterwards, it only compares it for
equality and doesn't dereference it, so that's safe.
While I'm at it, get rid of pointless checks for NULL, use shost_priv()
and change ncr53c8xx_release to return void.
Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Wed, 15 Aug 2007 18:57:01 +0000 (12:57 -0600)]
[SCSI] ide-scsi: Close narrow race in release
We were releasing the block devices before removing the host, so commands
could still be coming in which would cause a panic. Just remove the
host before releasing the block devices to close this race.
Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Matthew Wilcox [Mon, 20 Aug 2007 15:18:48 +0000 (09:18 -0600)]
[SCSI] scsi_scan: Cope with kthread_run failing
If kthread_run failed, we would fail to scan the host, and leak the
allocated async_scan_data. Since using a separate thread is just an
optimisation, do the scan synchronously if we fail to spawn a thread.
Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
James Bottomley [Sun, 5 Aug 2007 18:36:11 +0000 (13:36 -0500)]
[SCSI] sg: use idr to replace static arrays
sg uses a scheme to reallocate a single contiguous array of all its
pointers for lookup and management. This didn't matter too much when sg
could only attach 256 nodes, but now the maximum has been bumped up to
32k we're starting to push the limits of the maximum allocatable
contiguous memory. The solution to this is to eliminate the static
array and do everything via idr, which this patch does.
Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Remove IRQF_DISABLED, it is clearly wrong for this driver.
* Remove wasteful spin_lock_irqsave() in interrupt handler.
The lighter-weight spin_lock() is all that's needed.
* Annotate with FIXME where arcmsr_interrupt() is called
without any spinlock being acquired.
* Eliminate pointless cast from void pointer in arcmsr_do_interrupt()
[jejb: conflict resolution]
Signed-off-by: Jeff Garzik <jeff@garzik.org> Acked-by: Nick Cheng <nick.cheng@areca.com.tw> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Jeff Garzik [Fri, 27 Jul 2007 17:00:48 +0000 (13:00 -0400)]
[SCSI] arcmsr: Fix hardware wait loops
Remove _interruptible, since receiving a signal while waiting on a
hardware condition will simply cause the driver to busy-wait.
Using msleep_interruptible() is rarely the right thing to do, when
waiting on a hardware condition to change.
Also, replace msleep with ssleep while doing this, where appropriate.
[jejb: fix up merge conflict]
Signed-off-by: Jeff Garzik <jeff@garzik.org> Acked-by: Nick Cheng <nick.cheng@areca.com.tw> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Andrew Vasquez [Thu, 20 Sep 2007 21:07:49 +0000 (14:07 -0700)]
[SCSI] qla2xxx: Rework MSI-X handlers.
Since MSI-X vectors do not require a clearing "handshake" from
the system perspective, and the registered handler will not be
called more than once for one occurrence of receipt of a vector,
there is no requirement to flush the risc register write clearing
the interrupt condition in the risc. Also, since the msi-x
registered handlers are optimised for a particular vector, it is
preferable to handle the one vector received per invocation of
the handler.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Newer ISPs support a mechanism to read and write flash-memory via
the firmware LOAD/DUMP memory mailbox command routines. When
supported, utilizing these mechanisms significantly reduces
overall access times.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
James Bottomley [Sat, 4 Aug 2007 15:06:25 +0000 (10:06 -0500)]
[SCSI] move ULD attachment into the prep function
One of the intents of the block prep function was to allow ULDs to use
it for preprocessing. The original SCSI model was to have a single prep
function and add a pointer indirect filter to build the necessary
commands. This patch reverses that, does away with the init_command
field of the scsi_driver structure and makes ULDs attach directly to the
prep function instead. The value is really that it allows us to begin
to separate the ULDs from the SCSI mid layer (as long as they don't use
any core functions---which is hard at the moment---a ULD doesn't even
need SCSI to bind).
Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
David Woodhouse [Fri, 21 Sep 2007 22:29:36 +0000 (08:29 +1000)]
[SCSI] Fix ibmvscsi client for multiplatform iSeries+pSeries kernel
If you build a multiplatform kernel for iSeries and pSeries, with
ibmvscsic support, the resulting client doesn't work on iSeries.
This fixes that, using the appropriate low-level operations
for the machine detected at runtime.
[jejb: fixed up rejections around the srp transport patch]
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
In scsi module I've found some inconsistency between variable type
used in module_param_named and type passed to module_param_named as an
argument. Especially the inconsistency of `max_scsi_luns' parameter is
a bit serious because the description text says "last scsi LUN (should
be between 1 and 2^32-1)".
Signed-off-by: Masatake YAMATO <jet@gyve.org> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
[SCSI] ide-scsi.: convert to data accessors and !use_sg cleanup
- Convert ide-scsi to the new data accessors and cleanup
the !use_sg code paths.
In old code the driver was trying to translate narrow commands,
if received, to wide commands. This code path still assumed
scsi_cmnd->request_buffer is a linear char pointer.
This means that this driver was broken since 2.6.17.
As suggested by Christoph Hellwig I set
use_10_for_rw = 1; and use_10_for_ms = 1;
for this device and completely killed the translation.
The tape drive returns busy. The low level driver detects underrun and
sets the residual into the scsi command. The low level driver responds
with (DID_OK << 16) | scsi_status. scsi_status is 8, hence
status_byte(result) == 4, i.e., BUSY.
scsi_softirq_done() calls scsi_decide_disposition() which returns
ADD_TO_MLQUEUE. scsi_softirq_done() then calls scsi_queue_insert()
which, on the way to resubmitting the request to the driver, calls
scsi_init_cmd_errh().
The attached patch modifies scsi_init_cmd_errh() to clear the resid
field. This prevents a "stale" residual from being returned when the
scsi command finally completes without a BUSY status.
Signed-off-by: Michael Reed <mdr@sgi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
projects / linux-2.6 / log