- 04 Dec, 2014 2 commits
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Christoph Hellwig authored
Dropping to untagged mode when ramping down a queue due to QUEUE FULL events has two problems: - nothing in the midlayer or drivers ever moves back to tagged mode during queue ramp up. - cmd_per_lun isn't the untagged queue depth for many modern drivers that can handle multiple untagged commands, and this is the only place in the midlayer assuming that. Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Bart Van Assche <bvanassche@acm.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com Reviewed-by:
Hannes Reinecke <hare@suse.de>
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Christoph Hellwig authored
Since we got rid of ordered tag support in 2010 the prime use case of switching on and off ordered tags has been obsolete. The other function of enabling/disabling tagging entirely has only been correctly implemented by the 53c700 driver and isn't generally useful. Signed-off-by:
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- 27 Nov, 2014 2 commits
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Christoph Hellwig authored
The task_collector mode (or "latency_injector", (C) Dan Willians) is an optional I/O path in libsas that queues up scsi commands instead of directly sending it to the hardware. It generall increases latencies to in the optiomal case slightly reduce mmio traffic to the hardware. Only the obsolete aic94xx driver and the mvsas driver allowed to use it without recompiling the kernel, and most drivers didn't support it at all. Remove the giant blob of code to allow better optimizations for scsi-mq in the future. Signed-off-by:
Dan Williams <dan.j.williams@intel.com>
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Ondrej Zary authored
Remove dma_cache_sync call to fix build on other architectures. Driver still works fine on x86 without that. Signed-off-by:
Ondrej Zary <linux@rainbow-software.org> Signed-off-by:
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- 25 Nov, 2014 11 commits
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Douglas Gilbert authored
The Report supported operation codes command is very closely integrated into the table driven parser and very useful for testing it. Its cdb masks form the basis of the 'strict' parameter's checks. The Report supported TMFs command is a simple extension. The Compare and write command may even be useful, as it should be atomic due to the read-write lock that the driver uses on its backing store (ram). Signed-off-by:
Douglas Gilbert <dgilbert@interlog.com> Signed-off-by:
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Douglas Gilbert authored
The existing 'big switch' parser in queuecommand() is changed to a table driven parser. The old and new queuecommand() were moved in the source so diff would not shuffle them. Apart from the new tables most other changes are refactoring existing response code to be more easily called out of the table parser. The 'strict' parameter is added so that cdb_s can be checked for non-zero values in parts of the cdb that are reserved. Some other changes include: tweak request sense response when D_SENSE differs; support NDOB in Write Same(16); and fix crash in Get LBA Status when LBP was inactive. Signed-off-by:
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Douglas Gilbert authored
Via sysfs the virtual_gb scsi_debug parameter can be changed while LUs are in use. If that changes, the 'Capacity data has changed' Unit Attention is queued on all LUs. Signed-off-by:
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Douglas Gilbert authored
The way the existing scsi_debug command parser associated various inject error flags to a command was difficult to replicate in the table driven parser. This patch adds infrastructure to append those flags to the end of a scsi_cmnd object with the cmd_size host template option. Signed-off-by:
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Douglas Gilbert authored
Use Sense Key Specific field in the sense data of an ILLEGAL REQUEST to optionally pinpoint the location of the problem field. This may be either in the cdb or the associated parameter list. Signed-off-by:
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Ondrej Zary authored
Add documentation and script to obtain required firmware. Signed-off-by:
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Ondrej Zary authored
Introduce wd719x, a driver for Western Digital WD7193, WD7197 and WD7296 PCI SCSI controllers based on WD33C296A chip. Tested with WD7193 card. Signed-off-by:
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Ondrej Zary authored
Add read-only support for EEPROMs configured in 8-bit mode (ORG pin connected to GND). This will be used by wd719x driver. Signed-off-by:
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Tomas Henzl authored
The patch moves an error code assigment to a 'default' case in the previous switch statement. Signed-off-by:
Tomas Henzl <thenzl@redhat.com> Acked-by:
Bradley Grove <bgrove@attotech.com> Signed-off-by:
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Tomas Henzl authored
Is seems strange to manipulate nvram_semaphore when in this place, this patch fixes it. Signed-off-by:
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Tomas Henzl authored
This patch fixes an error path and rearranges error handling. Signed-off-by:
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- 24 Nov, 2014 25 commits
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Hannes Reinecke authored
The am53c974 is a re-implementation of the tmscsim driver, and provides the same functionality. So remove the tmscsim driver and make am53c974 an alias to tmscsim. Acked-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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Hannes Reinecke authored
CONFIG2_FENAB ('feature enable') changed definition between chip revisions, from 'Latch SCSI Phase' to 'Latch SCSI Phase, display chip ID upon reset, and enable 24 bit addresses'. So only enable it for am53c974 where we know what it's doing. Acked-by:David S. Miller <davem@davemloft.net> Reviewed-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Paolo Bonzini authored
On PCscsi, the FENAB configuration also enables 24-bit DMA transfer lengths (and provides the chip id in TCHI after reset). We want to be able to enable this parameter from the DMA driver. Check if the caller of scsi_esp_register provided a value for esp->config2. If this is the case, assume this is not an ESP100, skip the detection phase and leave esp->config2 untouched. It will be used in esp_reset_esp. Reviewed-by:
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Hannes Reinecke authored
The am53c974 returns the same ID as the FAS236, but implements things slightly differently. So detect the am53c974 by checking for ESP_CONFIG4 register. Reviewed-by:
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Hannes Reinecke authored
The am53c974 has an design issue where a single byte might be left in the SCSI FIFO after a DMA transfer. As the handling code is currently untested add a WARN_ON() statement here. Reviewed-by:
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Hannes Reinecke authored
This patch adds a new implementation for the Tekram DC-390T / AMD AM53c974 SCSI controller, based on the generic esp_scsi infrastructure. Reviewed-by:
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Hannes Reinecke authored
Using DMA for command submission has the drawback that it might generate additional DMA completion interrupts after the command has been submitted to the device. Additionally the am53c974 has a design flaw causing it to generate spurious interrupts even though DMA completion interrupts are not enabled. This can be avoided by using the FIFO for command submission. Reviewed-by:
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Hannes Reinecke authored
A read to ESP_INTRPT will clear ESP_STATUS and ESP_SSTEP. So read all status registers in one go to avoid losing information. Reviewed-by:
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Hannes Reinecke authored
Add new debug definitions for event and command logging. Reviewed-by:
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Hannes Reinecke authored
Use dev_printk functions for correct device annotations. Reviewed-by:
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Hannes Reinecke authored
Add a field 'num_tags' to the esp structure to allow drivers to overwrite the number of avialable tags if required. Default is ESP_DEFAULT_TAGS. Reviewed-by:
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Hannes Reinecke authored
Reviewed-by:
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Christoph Hellwig authored
Remove overly verbose debugging output that pokes into mid-layer internal structures that looks like copy & paste from the mpt2/3 drivers. Signed-off-by:
Mike Christie <michaelc@cs.wisc.edu> Reviewed-by:
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Christoph Hellwig authored
Merge two functions, and remove overly verbose debugging output that pokes into mid-layer internal structures. Signed-off-by:
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Christoph Hellwig authored
Merge two functions, and remove overly verbose debugging output that pokes into mid-layer internal structures. Signed-off-by:
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Christoph Hellwig authored
Drop the now unused reason argument from the ->change_queue_depth method. Also add a return value to scsi_adjust_queue_depth, and rename it to scsi_change_queue_depth now that it can be used as the default ->change_queue_depth implementation. Signed-off-by:
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Christoph Hellwig authored
We won't ever queue more commands than the host allows. Instead of letting drivers either reject or ignore this case handle it in common code. Note that various driver use internal constant or variables that are assigned to both shost->can_queue and checked in ->change_queue_depth - I did remove those checks as well. Signed-off-by:
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Christoph Hellwig authored
All drivers use the implementation for ramping the queue up and down, so instead of overloading the change_queue_depth method call the implementation diretly if the driver opts into it by setting the track_queue_depth flag in the host template. Note that a few drivers validated the new queue depth in their change_queue_depth method, but as we never go over the queue depth set during slave_configure or the sysfs file this isn't nessecary and can safely be removed. Signed-off-by:
Venkatesh Srinivas <venkateshs@google.com>
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Christoph Hellwig authored
James Smart said the userspace to consume these events never emerged. Given that these get in the way of the following patches remove support for them. Signed-off-by:
James Smart <james.smart@emulex.com>
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Sumit.Saxena@avagotech.com authored
Do not process any SCSI and IOCTL command further (return them with appropriate return values to callers), while driver removal is in progress or PCI shutdown is invoked. Signed-off-by:
Sumit Saxena <sumit.saxena@avagotech.com> Signed-off-by:
Kashyap Desai <kashyap.desai@avagotech.com> Reviewed-by:
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Sumit.Saxena@avagotech.com authored
This patch addresses few endianness related bug fixes. Signed-off-by:
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Sumit.Saxena@avagotech.com authored
Corrected wait_event() call which was waiting for wrong completion status (0xFF). Signed-off-by:
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Sumit.Saxena@avagotech.com authored
In OCR(Online Controller Reset) path, driver sets adapter state to MEGASAS_HBA_OPERATIONAL before getting new RAID map. There will be a small window where IO will come from OS with old RAID map. This patch will update adapter state to MEGASAS_HBA_OPERATIONAL, only after driver has new RAID map to avoid any IOs getting build using old RAID map. Signed-off-by:
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Sumit.Saxena@avagotech.com authored
In OCR (Online Controller Reset) path, driver sets adapter state to MEGASAS_HBA_OPERATIONAL before getting new RAID map. There will be a small window where IO will come from OS with old RAID map. This patch will update adapter state to MEGASAS_HBA_OPERATIONAL, only after driver has new RAID map to avoid any IOs getting build using old RAID map. Signed-off-by:
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Sumit.Saxena@avagotech.com authored
Update MAINTAINERS list and copyright information for megaraid_sas driver. Signed-off-by:
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