- 15 Dec, 2005 9 commits
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Mike Christie authored
convert st to always send scatterlists and kill scsi_request usage. This is the same as last time as it was posted, but with Kai's patches merged and we now pass the bytes value to scsi_execute_async. TODO: - move DIO code to common place or make block layers usable for ULDs. - move buffer allocation code to common place for all ULDs to use. And make buffer allocation code handle all queue limits so we can find out about problems before calling scsi_execute_async. - move indirect (copy_to/from_user) paths commone place or make block layers usable for ULDs. Signed-off-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
James Bottomley <James.Bottomley@SteelEye.com>
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Mike Christie authored
Convert sg to always send scatterlists, and kill scsi_request usage. TODO: - move DIO code to common place or make block layers usable for ULDs. - move buffer allocation code to common place for all ULDs to use. And make buffer allocation code obey all queue limits so we can find out about problems before calling scsi_execute_async. Currently, sg.c could allocate a buffer that is too large, and send the request to scsi_execute_async. scsi_execute_async will then check it against all the queue limits and return a failure in this case. It would nicer to know about the queue limit violation right away. - move indirect (copy_to/from_user) paths commone place or make block layers usable for ULDs. Signed-off-by:
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Mike Christie authored
Add kmemcache of scsi io contexts. In the future when we finalize on where these functions will live we can add a mempool for it and do a bioset for out REQ_BLOCK_PC bios. This is needed becuase the dm-multipath handlers will want to use the scsi_exectute* functions for failover and we cannot have them and the bio device allocating from the same mempool. Signed-off-by:
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Mike Christie authored
sd does not allow scsi_io_completion to retry commands for SG_IO requests, and it make sense that it should not happen for st SG_IO commands too. If for st we hit the bottom of scsi_io_completion we will probably screw things up pretty bad. This patch returns to the block layer that the whole command completed and relies on the caller to check the request errors field. For initialization commands like in sd, this adds the previous behavior where scsi_io_completion did not process the error. Signed-off-by:
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Mike Christie authored
For tape we need to control the retries. This patch adds a retries counter on the request for REQ_BLOCK_PC commands originating from scsi_execute* to use. REQ_BLOCK_PC commands comming from the block layer SG_IO path continue to use the retires set in the ULD init_command. (scsi_execute* does not set the gendisk so we do not execute the init_command in that path). Signed-off-by:
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Mike Christie authored
Add scsi helpers to create really-large-requests and convert scsi-ml to scsi_execute_async(). Per Jens's previous comments, I placed this function in scsi_lib.c. I made it follow all the queue's limits - I think I did at least :), so I removed the warning on the function header. I think the scsi_execute_* functions should eventually take a request_queue and be placed some place where the dm-multipath hw_handler can use them if that failover code is going to stay in the kernel. That conversion patch will be sent in another mail though. Signed-off-by:
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Mike Christie authored
To send async requests we need these two functions exported. Signed-off-by:
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Jesper Juhl authored
Add scsi_add_host() failure handling for aic7xxx Also silence a compiler warning : drivers/scsi/aic7xxx/aic7xxx_osm.c: In function `ahc_linux_register_host': drivers/scsi/aic7xxx/aic7xxx_osm.c:1100: warning: ignoring return value of `scsi_add_host', declared with attribute warn_unused_result Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by:
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Jesper Juhl authored
Add scsi_add_host() failure handling for aic79xx Also silence a compiler warning : drivers/scsi/aic7xxx/aic79xx_osm.c: In function `ahd_linux_register_host': drivers/scsi/aic7xxx/aic79xx_osm.c:1099: warning: ignoring return value of `scsi_add_host', declared with attribute warn_unused_result Signed-off-by:
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- 14 Dec, 2005 31 commits
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Matthew Wilcox authored
Add forward declarations to allow scsi_transport_spi.h to be compiled by itself. Signed-off-by:
Matthew Wilcox <matthew@wil.cx> Signed-off-by:
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Alan Stern authored
Since nobody has offered an explanation for why the sd driver makes a write-protect check only for devices with removable media, I'm submitting this patch to get rid of the removable-media test. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Moore, Eric Dean authored
Signed-off-by:
Eric Moore <Eric.Moore@lsil.com> Signed-off-by:
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Moore, Eric Dean authored
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Moore, Eric Dean authored
This utilizes the hostdata area that is hung off of scsi_target and scsi_device for saving unique firmware mapping. This will be required for supporting new Fibre and SPI transport support. This also fixs problems in error handling error code for SAS controllers, in which the incorrect mapping was passed to the firmware. Signed-off-by:
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Moore, Eric Dean authored
This moves some functions around from within the #define MPTSCSIH_ENABLE_DOMAIN_VALIDATION area, in preperation for generic domain validation. Signed-off-by:
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Moore, Eric Dean authored
This changes to SPI for the bus_type enumeration. Signed-off-by:
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Moore, Eric Dean authored
This cleans the returning failure conditions of the mptsas/mptfc/mptspi probe routines. Signed-off-by:
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Moore, Eric Dean authored
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James.Smart@Emulex.Com authored
Signed-off-by:
James Smart <James.Smart@emulex.com> Signed-off-by:
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James.Smart@Emulex.Com authored
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James.Smart@Emulex.Com authored
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James.Smart@Emulex.Com authored
- Add functionality to run in polled mode only. Includes run time attribute to enable mode. - Enable runtime writable hba settings for coallescing and delay parameters Customers have requested a mode in the driver to run strictly polled. This is generally to support an environment where the server is extremely loaded and is looking to reclaim some cpu cycles from adapter interrupt handling. This patch adds a new "poll" attribute, and the following behavior: if value is 0 (default): The driver uses the normal method for i/o completion. It uses the firmware feature of interrupt coalesing. The firmware allows a minimum number of i/o completions before an interrupt, or a maximum time delay between interrupts. By default, the driver sets these to no delay (disabled) or 1 i/o - meaning coalescing is disabled. Attributes were provided to change the coalescing values, but it was a module-load time only and global across all adapters. This patch allows them to be writable on a per-adapter basis. if value is 1 : Interrupts are left enabled, expecting that the user has tuned the interrupt coalescing values. When this setting is enabled, the driver will attempt to service completed i/o whenever new i/o is submitted to the adapter. If the coalescing values are large, and the i/o generation rate steady, an interrupt will be avoided by servicing completed i/o prior to the coalescing thresholds kicking in. However, if the i/o completion load is high enough or i/o generation slow, the coalescion values will ensure that completed i/o is serviced in a timely fashion. if value is 3 : Turns off FCP i/o interrupts altogether. The coalescing values now have no effect. A new attribute "poll_tmo" (default 10ms) exists to set the polling interval for i/o completion. When this setting is enabled, the driver will attempt to service completed i/o and restart the interval timer whenever new i/o is submitted. This behavior allows for servicing of completed i/o sooner than the interval timer, but ensures that if no i/o is being issued, then the interval timer will kick in to service the outstanding i/o. Signed-off-by:
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James.Smart@Emulex.Com authored
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James.Smart@Emulex.Com authored
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James.Smart@Emulex.Com authored
- Release task management command before counting outstanding commands. TMF was being erroneously counted as an active outstanding command. - Serialize EH calls and block requests when EH function is running. Signed-off-by:
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James.Smart@Emulex.Com authored
Remove locking wrappers around error handlers. Wrappers were added in early 2.6.13 api change Signed-off-by:
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James.Smart@Emulex.Com authored
- Remove unnecessary scsi_block_requests calls on rport deletes. This was deadlocking the sdev removals as they wanted to flush commands. - No longer block requests when adding the remote port (to block discovery). Instead, register, then change port role. Maps to Qlogic behavior, and closer to the register-node-upon-first-ELS behavior. Signed-off-by:
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James.Smart@Emulex.Com authored
Cause: Link bounces were causing discovery ELS's to be killed. Driver was not properly flushing ELS commands upon the subsequent link bounces. Thus, processing of ELS post link bounce erroneously assumed discovery failure and device loss. Signed-off-by:
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James.Smart@Emulex.Com authored
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James.Smart@Emulex.Com authored
Miscellaneous Cleanups: - Remove ProgType READ_REV mailbox command value check in lpfc_config_port_prep. - Convert simple printk to an lpfc_printf_log in queuecommand. - Modify lpfc_abort_handler message 0749 to display more accurate text and data. - Minor style cleanup: fix 3 long lines in lpfc_hw.h Signed-off-by:
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James Bottomley authored
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James Bottomley authored
Make the vendor, model and rev fields in scsi_device pointers to const and update a few prototypes of functions using them. Signed-off-by: -
Mike Christie authored
From Wang Zhenyu: check header digest for cmd and mgmt tasks Signed-off-by:
Wang Zhenyu <zhenyu.z.wang@intel.com> Signed-off-by:
Alex Aizman <itn780@yahoo.com> Signed-off-by:
Dmitry Yusupov <dmitry_yus@yahoo.com> Signed-off-by:
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Mike Christie authored
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Mike Christie authored
From Wang Zhenyu: High queue depth was a problem for some targets so make queue_depth adjustable From Mike Christie Make default queue_depth a little lower Signed-off-by:
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Mike Christie authored
From Wang Zhenyu: data digest fix (the bug caused data corruption w/Wasabi StorageBuilder target) Signed-off-by:
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Mike Christie authored
from Wang Zhenyu: Must check SCSI CMD and R2T response according to the spec Signed-off-by:
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Mike Christie authored
From tomof@acm.org: There is one more issue about Equallogic systems. They send re-direction info with FIN. I think that the kernel module needs to let iscsid to read data from the socket before killing it. Signed-off-by:
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Mike Christie authored
Must check only valid opcode bits. Signed-off-by:
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Matthew Wilcox authored
Update version number to 2.2.2 Signed-off-by:
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