linux-stable.git/drivers/scsi/ipr.h, branch linux-4.2.y

ipr: Fix incorrect trace indexing

2015-07-30T17:38:00+00:00

When ipr's internal driver trace was changed to an atomic, a signed/unsigned
bug slipped in which results in us indexing backwards in our memory buffer
writing on memory that does not belong to us. This patch fixes this by removing
the modulo and instead just mask off the low bits.

Cc: 
Tested-by: Wen Xiong 
Reviewed-by: Wen Xiong 
Reviewed-by: Gabriel Krisman Bertazi 
Signed-off-by: Brian King 
Reviewed-by: Martin K. Petersen 
Signed-off-by: James Bottomley

ipr: Increase default adapter init stage change timeout

2015-06-02T15:03:25+00:00

Increase the default init stage change timeout from 15 seconds to 30 seconds.
This resolves issues we have seen with some adapters not transitioning
to the first init stage within 15 seconds, which results in adapter
initialization failures.

Cc: 
Signed-off-by: Brian King 
Signed-off-by: James Bottomley

ipr: Driver version 2.6.1

2015-04-09T21:19:23+00:00

Signed-off-by: Brian King 
Signed-off-by: James Bottomley

ipr: AF DASD raw mode implementation in ipr driver

2015-04-09T21:17:57+00:00

This patch implements raw mode support for AF DASD in ipr driver
which allows for tools to send commands directly to physical
devices which are members of RAID arrays when enabled in the firmware.

[jejb: fix up whitespace]
Signed-off-by: Wen Xiong
Signed-off-by: Brian King 
Reviewed-by: Daniel Kreling 
Signed-off-by: James Bottomley

ipr: Reset in task context

2015-04-09T20:43:14+00:00

The pci_set_pcie_reset_state has changed semantics to not be callable
from interrupt context, so change ipr's usage of the API to comply with
this change by ensuring this occurs from a workqueue.

Signed-off-by: Brian King 
Reviewed-by: Wen Xiong 
Reviewed-by: Daniel Kreling 
Signed-off-by: James Bottomley

ipr: Reboot speed improvements

2015-04-09T20:42:07+00:00

Currently when performing a reboot with an ipr adapter,
the adapter gets shutdown completely, flushing all write
cache, as well as performing a full hardware reset of the card
during the shutdown phase of the old kernel. This ensures
the adapter is in a fully quiesced state across the reboot.

There are scenarios, however, such as when performing
kexec, where this full adapter shutdown is not required
and not desired, since it can make the reboot process take
noticeably longer.

This patch adds a module parameter to allow for skipping the
full shutdown during reboot. Rather than performing a full
adapter shutdown and reset, we simply cancel any outstanding
error buffers, place the adapter into a state where it has no
memory of any DMA addresses from the old kernel, then disable
the device. This significantly speeds up kexec boot, particularly
in configurations with multiple ipr adapters.

Signed-off-by: Brian King 
Reviewed-by: Wen Xiong 
Reviewed-by: Daniel Kreling 
Signed-off-by: James Bottomley

ipr: wait for aborted command responses

2015-01-19T09:46:20+00:00

Fixes a race condition in abort handling that was injected
when multiple interrupt support was added. When only a single
interrupt is present, the adapter guarantees it will send
responses for aborted commands prior to the response for the
abort command itself. With multiple interrupts, these responses
generally come back on different interrupts, so we need to
ensure the abort thread waits until the aborted command is
complete so we don't perform a double completion. This race
condition was being hit frequently in environments which
were triggering command timeouts, which was resulting in
a double completion causing a kernel oops.

Cc: 
Signed-off-by: Brian King 
Reviewed-by: Wendy Xiong 
Tested-by: Wendy Xiong 
Signed-off-by: Christoph Hellwig

ipr: add support for async scanning to speed up boot

2014-12-15T12:34:28+00:00

Switch device scanning logic in the ipr driver to use
the async scan API. This speeds up boot times, particularly
on large systems.

Signed-off-by: Brian King 
Reviewed-by: Wen Xiong
Signed-off-by: Christoph Hellwig

ipr: convert to generic DMA API

2014-11-12T10:32:00+00:00

Even though the ipr driver is only used on PCI, convert it
to use the generic DMA API.

Signed-off-by: Anton Blanchard 
Signed-off-by: Brian King 
Signed-off-by: Christoph Hellwig

ipr: fix compile failure

2014-09-26T08:07:27+00:00

Fix a typo in the IPR_IOASC_HW_CMD_FAILED declaration.  Based on a patch
from Wen Xiong .

Signed-off-by: Christoph Hellwig