Commit graph

35 commits

Author SHA1 Message Date
Asai Thambi S P
7b421d24ea mtip32xx: Create debugfs entries for troubleshooting
On module load, creates a debugfs parent 'rssd' in debugfs root. Then for each
device, create a new node with corresponding disk name. Under the new node, two
entries 'registers' and 'flags' are created.

NOTE: These entries were removed from sysfs in the previous patch

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-06-05 09:13:49 +02:00
Asai Thambi S P
7412ff139d mtip32xx: Remove 'registers' and 'flags' from sysfs
This patch removes entries 'registers' and 'flags' from sysfs. Updated ABI file
to reflect this change.

Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-06-05 09:13:48 +02:00
Sachin Kamat
87c9ea76a2 mtip32xx: Remove version.h header file inclusion
version.h header file inclusion is no longer required.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
2012-06-04 10:00:32 +02:00
Asai Thambi S P
b77874c969 mtip32xx: Changes to sysfs entries
* Formatted the output of 'registers' entry
* Added "Commands in Q' to output of 'registers' entry
* Added a new entry 'flags'

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:46:50 +02:00
Asai Thambi S P
8ce800935d mtip32xx: Convert macro definitions for flag bits to enum
Convert macro definitions for flags bits to enum

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:46:50 +02:00
Asai Thambi S P
377b8fc6d7 mtip32xx: minor performance tweak
When checking for command completions if the register value is zero, proceed
to next register.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:46:50 +02:00
Asai Thambi S P
e602878fd8 mtip32xx: Fix to support more than one sector in exec_drive_command()
Fix to support more than one sector in exec_drive_command().

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:46:50 +02:00
Asai Thambi S P
0a07ab224a mtip32xx: Use plain spinlock for 'cmd_issue_lock'
'cmd_issue_lock' is for only acquiring a free slot, and it is not used
in interrupt context. So replaced irq version with non-irq version of spinlock.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:46:50 +02:00
Asai Thambi S P
6c8ab69818 mtip32xx: Set block queue boundary variables
Set the following block queue boundary variables
	* max_hw_sectors
	* max_segment_size

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>

Removed setting of q->nr_requests.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:46:50 +02:00
Asai Thambi S P
d02e1f0ad0 mtip32xx: Fix to handle TFE for PIO(IOCTL/internal) commands
If a PIO (IOCTL/internal) command resulted in TFE, signal the wait event or break out of polling.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:36:55 +02:00
Asai Thambi S P
971890f258 mtip32xx: Change HDIO_GET_IDENTITY to return stored data
For the ioctl command HDIO_GET_IDENTITY, return the stored copy of IDENTIFY
DATA instead of sending the command to the device - similar to libata.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:36:55 +02:00
Asai Thambi S P
2df7aa96e7 mtip32xx: Set custom timeouts for PIO commands
This change sets custom timeouts depending on PIO command.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:36:55 +02:00
Asai Thambi S P
6bb688c048 mtip32xx: fix clearing an incorrect register in mtip_init_port
Fix clearing an incorrect register in mtip_init_port

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-31 08:36:55 +02:00
Asai Thambi S P
a09ba13eef mtip32xx: release the semaphore on an error path
Release the semaphore in an error path in mtip_hw_get_scatterlist(). This
fixes the smatch warning inconsistent returns.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-05-11 16:42:14 +02:00
Greg Kroah-Hartman
6363480651 block: mtip32xx: remove HOTPLUG_PCI_PCIE dependancy
This removes the HOTPLUG_PCI_PCIE dependency on the driver and makes it
depend on PCI.

Cc: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-12 08:47:05 +02:00
Asai Thambi S P
95fea2f1d9 mtip32xx: dump tagmap on failure
Dump tagmap on failure, instead of individual tags.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09 08:35:39 +02:00
Asai Thambi S P
c74b0f586f mtip32xx: fix handling of commands in various scenarios
* If a ncq  command time out and a non-ncq command is active, skip restart port
* Queue(pause) ncq commands during operations spanning more than one non-ncq commands - secure erase, download microcode
* When a non-ncq command is active, allow incoming non-ncq commands to wait instead of failing back
* Changed timeout for download microcode and smart commands
* If the device in write protect mode, fail all writes (do not send to device)
* Set maximum retries to 2

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09 08:35:39 +02:00
Asai Thambi S P
8a857a880b mtip32xx: Shorten macro names
Shortened macros used to represent mtip_port->flags and dd->dd_flag

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09 08:35:38 +02:00
Asai Thambi S P
8182b49528 mtip32xx: misc changes
* Handle the interrupt completion of polled internal commands
* Do not check remove pending flag for standby command
* On rebuild failure,
    - set corresponding bit dd_flag
    - do not send standby command
* Free ida index in remove path

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09 08:35:38 +02:00
Asai Thambi S P
f65872177d mtip32xx: Add new sysfs entry 'status'
* Add support for detecting the following device status
        - write protect
        - over temp (thermal shutdown)
* Add new sysfs entry 'status', possible values - online, write_protect, thermal_shutdown
* Add new file 'sysfs-block-rssd' to document ABI (Reported-by: Greg Kroah-Hartman)

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09 08:35:38 +02:00
Asai Thambi S P
dad40f16ff mtip32xx: make setting comp_time as common
Moved setting completion time into mtip_issue_ncq_command()

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09 08:35:38 +02:00
Asai Thambi S P
45038367c2 mtip32xx: Add new bitwise flag 'dd_flag'
* Merged the following flags into one variable 'dd_flag':
        * drv_cleanup_done
        * resumeflag
* Added the following flags into 'dd_flag'
        * remove pending
        * init done
* Removed 'ftlrebuildflag' (similar flag is already part of mti_port->flags)

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-09 08:35:38 +02:00
Ryosuke Saito
6d27f09a63 mtip32xx: fix error handling in mtip_init()
Ensure that block device is properly unregistered, if
pci_register_driver() fails.

Signed-off-by: Ryosuke Saito <raitosyo@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-04-05 08:09:34 -06:00
Asai Thambi S P
22be2e6e13 mtip32xx: fix incorrect value set for drv_cleanup_done, and re-initialize and start port in mtip_restart_port()
This patch includes two changes:
	* fix incorrect value set for drv_cleanup_done
	* re-initialize and start port in mtip_restart_port()

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-03-23 12:33:03 +01:00
Asai Thambi S P
4e8670e261 mtip32xx: removed the irrelevant argument of mtip_hw_submit_io() and the unused member of struct driver_data
Removed the following:
	* irrelevant argument 'barrier' of mtip_hw_submit_io()
	* unused member 'eh_active' of struct driver_data

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-02-07 07:54:31 +01:00
Asai Thambi S P
62ee8c13e2 mtip32xx: do rebuild monitoring asynchronously
Earlier, rebuild monitoring was done in the context of probe. Now the service
thread takes the responsibility of rebuild monitoring, and probe returns good
status.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-01-04 22:01:32 +01:00
Dan Carpenter
3e54a3d1b8 mtip32xx: uninitialized variable in mtip_quiesce_io()
We recently introduce new continue in the loop which make gcc complain.
In theory if MTIP_FLAG_SVC_THD_ACTIVE_BIT is set, we could hit continue
over and over until eventually we time out of the loop.  In that case
"active" should be set as true, but right now it's uninitialized.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-11-24 12:59:00 +01:00
Asai Thambi S P
60ec0eecfa mtip32xx: updates based on feedback
* queue ncq commands when a non-ncq is in progress or error handling is active
* merge variables 'internal_cmd_in_progress' and 'eh_active' into new variable 'flags'
* get rid of read/write semaphore 'internal_sem'
* new service thread to issue queued commands
* use macros from ata.h for command codes
* return ENOTTY for BLKFLSBUF ioctl
* style changes

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-11-23 08:29:24 +01:00
Jens Axboe
a71f483d79 mtip32xx: update to new ->make_request() API
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-11-05 08:36:21 +01:00
Jens Axboe
0e838c624e mtip32xx: add module.h include to avoid conflict with moduleh tree
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-11-05 08:35:10 +01:00
Jens Axboe
3ff147d3a8 mtip32xx: mark a few more items static
Missed two items: mtip_major, and mtip_pci_driver.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-11-05 08:35:10 +01:00
Jens Axboe
6316668fbc mtip32xx: ensure that all local functions are static
Kill the declarations in the header file and mark them as static.
Reshuffle a few functions to ensure that everything is properly
declared before being used.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-11-05 08:35:10 +01:00
Jens Axboe
ef0f158734 mtip32xx: cleanup compat ioctl handling
Do the conversion/copy up front instead of passing in a compat flag
to the ioctl handler and subsequently to the exec_drive_taskfile()
function.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-11-05 08:35:10 +01:00
Jens Axboe
16d02c040b mtip32xx: fix warnings/errors on 32-bit compiles
We need to clean up the compat ioctl handling, but this makes it
work for now at least.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-11-05 08:35:10 +01:00
Sam Bradshaw
88523a6155 block: Add driver for Micron RealSSD pcie flash cards
This adds mtip32xx, a driver supporting Microns line of
pci-express flash storage cards.

Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-11-05 08:35:10 +01:00