linux-toradex.git/drivers/scsi/ipr.h, branch v5.0-rc7

scsi: ipr: System hung while dlpar adding primary ipr adapter back

2018-09-21T16:35:39+00:00

While dlpar adding primary ipr adapter back, driver goes through adapter
initialization then schedule ipr_worker_thread to start te disk scan by
dropping the host lock, calling scsi_add_device.  Then get the adapter reset
request again, so driver does scsi_block_requests, this will cause the
scsi_add_device get hung until we unblock. But we can't run ipr_worker_thread
to do the unblock because its stuck in scsi_add_device.

This patch fixes the issue.

[mkp: typo and whitespace fixes]

Signed-off-by: Wen Xiong 
Acked-by: Brian King 
Signed-off-by: Martin K. Petersen

scsi: ipr: Format HCAM overlay ID 0x41

2018-06-20T02:02:25+00:00

This patch adds formatting error overlay 0x41 to improve debug
capabilities.

Signed-off-by: Wen Xiong 
Acked-by: Brian King 
Signed-off-by: Martin K. Petersen

scsi: ipr: Use sgl_alloc_order() and sgl_free_order()

2018-02-14T02:49:14+00:00

Use the sgl_alloc_order() and sgl_free_order() functions instead of open
coding these functions.

Signed-off-by: Bart Van Assche 
Acked-by: Brian King 
Reviewed-by: Johannes Thumshirn 
Reviewed-by: Hannes Reinecke 
Cc: Martin K. Petersen 
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Martin K. Petersen

scsi: ipr: Fix scsi-mq lockdep issue

2017-08-08T15:49:51+00:00

Fixes the following lockdep warning that can occur when scsi-mq is
enabled with ipr due to ipr calling scsi_unblock_requests from irq
context. The fix is to move the call to scsi_unblock_requests to ipr's
existing workqueue.

stack backtrace:
CPU: 28 PID: 0 Comm: swapper/28 Not tainted 4.13.0-rc2-gcc6x-gf74c89b #1
Call Trace:
[c000001fffe97550] [c000000000b50818] dump_stack+0xe8/0x160 (unreliable)
[c000001fffe97590] [c0000000001586d0] print_usage_bug+0x2d0/0x390
[c000001fffe97640] [c000000000158f34] mark_lock+0x7a4/0x8e0
[c000001fffe976f0] [c00000000015a000] __lock_acquire+0x6a0/0x1a70
[c000001fffe97860] [c00000000015befc] lock_acquire+0xec/0x2e0
[c000001fffe97930] [c000000000b71514] _raw_spin_lock+0x44/0x70
[c000001fffe97960] [c0000000005b60f4] blk_mq_sched_dispatch_requests+0xa4/0x2a0
[c000001fffe979c0] [c0000000005acac0] __blk_mq_run_hw_queue+0x100/0x2c0
[c000001fffe97a00] [c0000000005ad478] __blk_mq_delay_run_hw_queue+0x118/0x130
[c000001fffe97a40] [c0000000005ad61c] blk_mq_start_hw_queues+0x6c/0xa0
[c000001fffe97a80] [c000000000797aac] scsi_kick_queue+0x2c/0x60
[c000001fffe97aa0] [c000000000797cf0] scsi_run_queue+0x210/0x360
[c000001fffe97b10] [c00000000079b888] scsi_run_host_queues+0x48/0x80
[c000001fffe97b40] [c0000000007b6090] ipr_ioa_bringdown_done+0x70/0x1e0
[c000001fffe97bc0] [c0000000007bc860] ipr_reset_ioa_job+0x80/0xf0
[c000001fffe97bf0] [c0000000007b4d50] ipr_reset_timer_done+0xd0/0x100
[c000001fffe97c30] [c0000000001937bc] call_timer_fn+0xdc/0x4b0
[c000001fffe97cf0] [c000000000193d08] expire_timers+0x178/0x330
[c000001fffe97d60] [c0000000001940c8] run_timer_softirq+0xb8/0x120
[c000001fffe97de0] [c000000000b726a8] __do_softirq+0x168/0x6d8
[c000001fffe97ef0] [c0000000000df2c8] irq_exit+0x108/0x150
[c000001fffe97f10] [c000000000017bf4] __do_irq+0x2a4/0x4a0
[c000001fffe97f90] [c00000000002da50] call_do_irq+0x14/0x24
[c0000007fad93aa0] [c000000000017e8c] do_IRQ+0x9c/0x140
[c0000007fad93af0] [c000000000008b98] hardware_interrupt_common+0x138/0x140

Reported-by: Michael Ellerman 
Signed-off-by: Brian King 
Signed-off-by: Martin K. Petersen

scsi: ipr: Driver version 2.6.4

2017-03-23T16:04:05+00:00

Bump driver version

Signed-off-by: Brian King 
Reviewed-by: Wendy Xiong 
Tested-by: Wendy Xiong 
Signed-off-by: Martin K. Petersen

scsi: ipr: Use pci_irq_allocate_vectors

2016-11-08T22:29:46+00:00

Switch the ipr driver to use pci_alloc_irq_vectors.  We need to two
calls to pci_alloc_irq_vectors as ipr only supports multiple MSI-X
vectors, but not multiple MSI vectors.

Otherwise this cleans up a lot of cruft and allows to use a common
request_irq loop for irq types, which happens to only iterate over a
single line in the non MSI-X case.

Signed-off-by: Christoph Hellwig 
Acked-by: Brian King 
Signed-off-by: Martin K. Petersen

scsi: ipr: Don't log unnecessary 9084 error details

2016-09-19T15:57:33+00:00

A 9084 error gets logged by the ipr adapter when adapter raw mode gets
enabled. A bunch of unformatted hex data also gets logged for this
error, which is of little use, so let's avoid logging it by default in
order to avoid the log getting polluted with useless data.

Signed-off-by: Brian King 
Reviewed-by: Gabriel Krisman Bertazi 
Signed-off-by: Martin K. Petersen

scsi: ipr: Add asynchronous error notification

2016-08-26T03:39:15+00:00

This patch implements functions for pushing HCAM (host controlled
asynchronous messages) error buffers to userspace through sysfs
attributes.  Reads to the "async_err_log" attribute will result in a
single HCAM buffer being copied to userspace; one can process the next
HCAM buffer by writing any string to the same attribute.

A new list was added to the ioa_cfg structure to store the HCAM buffers
for later reporting. We also send a KOBJ_CHANGE event whenever a new
HCAM buffer is made available to userspace.

Signed-off-by: Heitor Ricardo Alves de Siqueira 
Signed-off-by: Gabriel Krisman Bertazi 
Signed-off-by: Brian King 
Signed-off-by: Martin K. Petersen

ipr: Wait to do async scan until scsi host is initialized

2016-07-27T04:32:07+00:00

When performing an async scan, make sure the kthread doing scanning
doesn't start before the scsi host is fully initialized.

Signed-off-by: Brian King 
Reviewed-by: Gabriel Krisman Bertazi 
Signed-off-by: Martin K. Petersen

ipr: Add new CCIN for new adapters support

2016-07-14T02:39:32+00:00

Add the appropriate definitions and table entries for new adapters
support.

Signed-off-by: Wen Xiong 
Reviewed-by: Gabriel Krisman Bertazi 
Acked-by: Brian King 
Signed-off-by: Martin K. Petersen