08 Aug, 2011
1 commit
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Signed-off-by: Joseph Handzik
Acked-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
09 Jul, 2011
1 commit
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Most smartarrays will tolerate it, but some new ones don't.
Signed-off-by: Stephen M. Cameron
Note: this is a regression caused by commit 1ddd5049
Cc: stable@kernel.org
Signed-off-by: Jens Axboe
06 May, 2011
3 commits
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Just to reduce the messages about timeouts that appear.
Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
This is to ensure the board interrupts are really off when
these functions return.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
24 Mar, 2011
1 commit
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Under certain workloads a command may seem to get lost. IOW, the Smart Array
thinks all commands have been completed but we still have commands in our
completion queue. This may lead to system instability, filesystems going
read-only, or even panics depending on the affected filesystem. We add an
extra read to force the write to complete.Testing shows this extra read avoids the problem.
Signed-off-by: Mike Miller
Cc: stable@kernel.org
Signed-off-by: Jens Axboe
14 Jan, 2011
1 commit
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* 'for-2.6.38/drivers' of git://git.kernel.dk/linux-2.6-block:
cciss: reinstate proper FIFO order of command queue list
floppy: replace NO_GEOM macro with a function
11 Jan, 2011
1 commit
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Commit 8a3173de inadvertently changed the ordering when
switching to hlists. Change to regular list heads so we
can use tail list adds, this improves performance.Signed-off-by: Jens Axboe
24 Oct, 2010
1 commit
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After a reset, we should first wait for the board to become "not ready",
and then wait for it to become "ready", instead of immediately
waiting for it to become "ready", and do this waiting *after*
restoring PCI config space registers.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
08 Aug, 2010
5 commits
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cciss: use consistent variable names
"h", for the hba structure and "c" for the command structures.
and get rid of trivial CCISS_LOCK macro.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
cciss: factor out cciss_reset_devices()
Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
cciss: factor out cciss_wait_for_board_ready()
Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
Add a mode of controller operation called Performant Mode. Even though
cciss has been deprecated in favor of hpsa there are new controllers due
out next year that HP must support in older vendor distros. Vendors
require all fixes/features be upstream. These new controllers support
only 16 commands in simple mode but support up to 1024 in performant mode.
This requires us to add this support at this late date.The performant mode transport minimizes host PCI accesses by performinf
many completions per read. PCI writes are posted so the host can write
then immediately get off the bus not waiting for the writwe to complete to
the target. In the context of performant mode the host read out to a
controller pulls all posted writes into host memory ensuring the reply
queue is coherent.Signed-off-by: Mike Miller
Cc: Stephen M. Cameron
Signed-off-by: Andrew Morton
Signed-off-by: Jens Axboe -
Change the return type of our interrupt access routines to bool from
unsigned long. It makes more sense that way.Signed-off-by: Mike Miller
Cc: Stephen M. Cameron
Signed-off-by: Andrew Morton
Signed-off-by: Jens Axboe
01 Mar, 2010
2 commits
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cciss: do not use void pointer for scsi hba data
and get rid of related unnecessary type casting
and delete some superfluous and misleading comments nearby.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
cciss: simplify scatter gather code.
Instead of allocating an array of pointers to a structure
containing an SGDescriptor structure, and two other elements
that aren't really used, just allocate SGDescriptor structs.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
22 Feb, 2010
1 commit
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Some cleanup before the header file split-out so we don't propagate this style
into new files.Acked-by: Stephen M. Cameron
Signed-off-by: dann frazier
Signed-off-by: Jens Axboe
23 Nov, 2009
1 commit
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A recent commit broke the ia64 build:
Author: Don Brace
Date: Thu Nov 12 12:50:01 2009 -0600cciss: Add enhanced scatter-gather support.
because of this hunk:
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
+struct Cmd_sg_list {
+ SGDescriptor_struct *sgchain;
+ dma64_addr_t sg_chain_dma;
+ int chain_block_size;
+};The issue is that dma64_addr_t isn't #define'd on ia64.
The way that we're using Cmd_sg_list.sg_chain_dma is to hold an
address returned from pci_map_single().+ temp64.val = pci_map_single(h->pdev,
+ h->cmd_sg_list[c->cmdindex]->sgchain,
+ len, dir);
+
+ h->cmd_sg_list[c->cmdindex]->sg_chain_dma = temp64.val;pci_map_single() returns a dma_addr_t too.
This code will still work even on a 32-bit x86 build, where
dma_addr_t is defined to be a u32 because it will simply be
promoted to the __u64 that temp64.val is defined as.Thus, declaring Cmd_sg_list.sg_chain_dma as dma_addr_t is safe.
Cc: Don Brace
Cc: Stephen M. Cameron
Signed-off-by: Alex Chiang
Signed-off-by: Jens Axboe
13 Nov, 2009
1 commit
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cciss: Add enhanced scatter-gather support. For controllers which
supported, more than 512 scatter-gather elements per command may
be used, and the max transfer size can be increased to 8192 blocks.Signed-off-by: Don Brace
Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
02 Oct, 2009
4 commits
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cciss: Dynamically allocate the drive_info_struct for each logical drive.
This reduces the size of the per-hba ctlr_info structure from 106936
bytes to 8132 bytes. That's on 32-bit systems. On 64-bit systems, the
improvement is even bigger. Without this, the ctlr_info struct is so big
that the driver won't even load on a 64 bit system if CISS_MAX_LUN was
at it's current setting of 1024 logical drives.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
Preserve all 8 bytes of the LunID field returned
by CCISS_REPORT_LOGICAL instead of only saving 4 bytes.
This fixes a bug with logical volume addressing encountered on
an MSA2012.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
Dynamically allocate struct device for each logical drive as needed
instead of allocating the maximum we would ever need at driver init time.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
Replace the use of one scan kthread per controller with one per driver.
Use a queue to hold a list of controllers that need to be rescanned with
routines to add and remove controllers from the queue.Fix locking and completion handling to prevent a hang during rmmod.
Signed-off-by: Andrew Patterson
Signed-off-by: Stephen M. Cameron
Acked-by: Mike Miller
Signed-off-by: Jens Axboe
09 Jun, 2009
2 commits
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Now that the cciss SCSI error handling routines operate with interrupts
enabled, we no longer need to maintain the list of command completions that
sendcmd() might inadvertantly scoop up, since now it only runs at driver init
time, and there won't be any other commands for it to scoop up. So we
can remove that list and the code that adds to it and processes it.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe -
Separate the error processing from sendcmd_withirq_core from the code
which retries commands. The rationale for this is that the SCSI error
handling code can then be made to use sendcmd_withirq_core, but avoid
retrying commands.Signed-off-by: Stephen M. Cameron
Signed-off-by: Jens Axboe
02 Jun, 2009
1 commit
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Add sysfs entries to the cciss driver needed for the dm/multipath tools.
A file for vendor, model, rev, and unique_id is added for each logical
drive under directory /sys/bus/pci/devices//ccissX/cXdY. Where X =
the controller (or host) number and Y is the logical drive number.A link from /sys/bus/pci/devices//ccissX/cXdY/block:cciss!cXdY to
/sys/block/cciss!cXdY/device is also created. A bus is created in
/sys/bus/cciss. A link is created from the pci ccissX entry to
/sys/bus/cciss/devices/ccissX. Please consider this for inclusion.Signed-off-by: Mike Miller
Cc: Stephen M. Cameron
Signed-off-by: Jens Axboe
07 Apr, 2009
1 commit
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The MSA2012 cannot inform the driver of configuration changes since all
management is out of band. This is a departure from any storage we have
supported in the past. We need some way to detect changes on the topology
so we implement this kernel thread. In some instances there's nothing we
can do from the driver (like LUN failure) so just print out a message. In
the case where logical volumes are added or deleted we call
rebuild_lun_table to refresh the driver's view of the world.Signed-off-by: Mike Miller
Cc: James Bottomley
Signed-off-by: Andrew Morton
Signed-off-by: Jens Axboe
29 Dec, 2008
1 commit
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This both cleans up the code and also helps detect the spurious case
of a command attempted being removed from a queue it doesn't belong
to.Acked-by: Mike Miller
Signed-off-by: Jens Axboe
06 Aug, 2008
1 commit
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This patch makes the rebuild_lun_table smart enough to not rip a logical
volume out from under the OS. Without this fix if a customer is running
hpacucli to monitor their storage the driver will blindly remove and re-add
the disks whenever the utility calls the CCISS_REGNEWD ioctl. Unfortunately,
both hpacucli and ACUXE call the ioctl repeatedly. Customers have reported
IO coming to a standstill. Calling the ioctl is the problem, this patch is
the fix.Signed-off-by: Stephen M. Cameron
Signed-off-by: Mike Miller
Signed-off-by: Jens Axboe
08 Dec, 2006
3 commits
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Add the support for a large number of logical volumes. We will soon have
hardware that support up to 1024 logical volumes.Signed-off-by: Mike Miller
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change the blk_queue_max_sectors from 512 to 2048. This helps increase
performance.[akpm@osdl.org: s/sector_size/max_sectors/]
Signed-off-by: Mike Miller
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove #define NR_CMDS and replace it w/hba[i]->nr_cmds. Most Smart Array
controllers can support up to 1024 commands but the E200 family can only
support 128. To prevent annoying "fifo full" messages we define nr_cmds on a
per controller basis by adding it the product table.Signed-off-by: Mike Miller
Acked-by: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Oct, 2006
1 commit
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Add support for logical volumes >2TB. All SAS/SATA controllers support
large volumes.Signed-off-by: Mike Miller
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Jun, 2006
1 commit
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We should call pci_request_regions() to claim all resources the device
decodes. Previously, we claimed only the I/O port range.Signed-off-by: Bjorn Helgaas
Acked-by: Jeff Garzik
Acked-by: Mike Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
09 Jan, 2006
2 commits
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This sneaked in with one of the updates.
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This creates a new function, cciss_interrupt_mode called from
cciss_pci_init. This function determines what type of interrupt vector to
use, i.e., MSI, MSI-X, or IO-APIC.One noticeable difference is changing the interrupt field of the controller
struct to an array of 4 unsigned ints. The Smart Array HW is capable of
generating 4 distinct interrupts depending on the transport method in use
during operation. These are:#define DOORBELL_INT 0
Used to notify the contoller of configuration updates. We only use
this feature when in polling mode.#define PERF_MODE_INT 0
Used when the controller is in Performant Mode.#define SIMPLE_MODE_INT 2
Used when the controller is in Simple Mode (current Linux implementation).#define MEMQ_INT_MODE 3
Not used.When using IO-APIC interrupts these 4 lines are OR'ed together so when any
one fires an interrupt an is generated. In MSI or MSI-X mode this hardware
OR'ing is ignored. We must register for our interrupt depending on what
mode the controller is running. For Linux we use SIMPLE_MODE_INT
exclusively at this time. Please consider this for inclusion.Signed-off-by: Mike Miller
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Nov, 2005
1 commit
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This patch adds SCSI error handling code to the SCSI portion
of the cciss driver.Signed-off-by: Stephen M. Cameron
Acked-by: Mike Miller
Signed-off-by: James Bottomley
13 Sep, 2005
3 commits
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This patch changes the way we complete commands. In the old method when we
got a completion we searched our command list from the top until we find it.This method uses a tag associated with each command (not SCSI command tagging)
to index us directly to the completed command. This helps performance.Signed-off-by: Don Brace
Signed-off-by: Mike Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch removes a couple of functions dealing with configuration and
replaces them with new functions. This implementation fixes some bugs
associated with the ACUXE. It also allows a logical volume to be removed from
the middle without deleting all volumes behind it.If a user has 5 logical volumes and decides he wants to reconfigure volume
number 3, he can now do that without removing volumes 4 & 5 first. This code
has been tested in our labs against all application software.Signed-off-by: Chase Maupin
Signed-off-by: Mike Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds a flag called busy_initializing. If there are multiple
controllers in a server AND the HP agents are running it's possible the agents
may try to poll a card that is still initializing if the driver is removed and
then added again.Signed-off-by: Don Brace
Signed-off-by: Mike Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds