- 29 Dec, 2008 40 commits
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FUJITA Tomonori authored
This patch changes scsi_probe_lun() to retry INQUIRY if the device has not actually sent back any INQUIRY data, This enables the Thecus N2050 storage device to work better. The firmware on that device starts up strangely; it sends no data in response to the initial INQUIRY, and it sends the INQUIRY information in response to the followup REQUEST SENSE. But after that it works better, so retrying the INQUIRY is enough to get it going. Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by:
James Bottomley <James.Bottomley@HansenPartnership.com>
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FUJITA Tomonori authored
scsi_execute() and scsi_execute_req() discard the residual length information. Some callers need it. This adds residual argument (optional) to scsi_execute and scsi_execute_req. Signed-off-by:
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Brian King authored
In order to ensure the VIOS sees a consistent command buffer, we need to add a memory barrier after building the command buffer but before sending the command. Signed-off-by:
Brian King <brking@linux.vnet.ibm.com> Signed-off-by:
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Brian King authored
Adds a delay prior to retrying a failed NPIV login. This fixes a scenario if the backing fibre channel adapter is getting reset due to an EEH event, NPIV login will fail. Currently, ibmvfc retries three times very quickly, resets the CRQ and tries one more time. If the adapter is getting reset due to EEH, this isn't enough time. This adds a delay prior to retrying a failed NPIV login and also increments the number of retries. Signed-off-by:
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Mike Christie authored
cxgb3i does not offload the processing of the header, but it will always process the padding. This patch adds a padding offload flag to detect when the LLD supports this. The patch also modifies the header processing so that we do not try to read/bypass the header dugest in the skb. cxgb3i will not include it with the header like with other offload cards. Signed-off-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
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Mike Christie authored
Mgmt setup used to not fail so we did not have to check the return value. Now with cxgb3i it can so this has us pass up a error. Signed-off-by:
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Mike Christie authored
We do not need to allocate a itt for data_out, so this passes the opcode to the alloc_pdu callout. Signed-off-by:
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Mike Christie authored
bnx2i and cxgb3i need to encode LLD info in the itt so that the firmware/hardware can process the pdu. This patch allows the LLDs to encode info in the task->hdr->itt that they setup in the alloc_pdu callout (any resources that are allocated can be freed with the pdu in the cleanup_task callout). If the LLD encodes info in the itt they should implement a parse_pdu_itt callout. If parse_pdu_itt is not implemented libiscsi will do the right thing for the LLD. Signed-off-by:
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Mike Christie authored
This hooks iscsi_tcp into the libiscsi_tcp module and removes code that is now in libiscsi_tcp. Signed-off-by:
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Mike Christie authored
As explained in the previous mails, cxgb3i needs iscsi_tcp's r2t/data_out and data_in procesing so this just moves functions that both drivers want to use to a new module libiscsi_tcp. The next patch will hook iscsi_tcp in. Signed-off-by:
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Mike Christie authored
Add iscsi_tcp prefix to most functions. Some are not changed becuase they are going to move in the next patch. Signed-off-by:
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Mike Christie authored
This modifies the login buffer allocation to use __get_free_pages. It will allow drivers that want to send this data with zero copy operations to easily line things up on page boundaries. Signed-off-by:
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Mike Christie authored
libiscsi's iscsi_prep_data_out_pdu now handles what iscsi_tcp's helpers were so we can remove iscsi_tcp's helpers. Signed-off-by:
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Mike Christie authored
This converts iscsi_tcp to the new api and modifies how it handles r2ts. Signed-off-by:
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Mike Christie authored
This just converts iser to new alloc_pdu api. It still preallocates the pdu, so there is no difference. Signed-off-by:
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Mike Christie authored
cxgb3i offloads data transfers. It does not offload the entire scsi/iscsi procssing like qla4xxx and it does not offload the iscsi sequence processing like how bnx2i does. cxgb3i relies on iscsi_tcp for the seqeunce handling so this changes how we transfer unsolicitied data by adding a common r2t struct and helpers. Signed-off-by:
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Mike Christie authored
cxgb3i is unlike qla4xxx and bnx2i in that it does not offload entire scsi commands or iscsi sequences. Instead it only offloads the transfer of a ISCSI DATA_IN pdu's data, the digests and padding. This patch fixes up the iscsi tcp recv path so that it exports its skb recv processing so cxgb3i and other drivers can call them. All they have to do is pass the function the skb with the hdr or data pdu header and this function will do the rest. Signed-off-by:
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James Bottomley authored
by removing the unused timeout parameter we ensure a compile failure if anyone is accidentally still using it rather than the block timeout. Signed-off-by: -
James Bottomley authored
Since we're trying to eliminate struct scsi_device timeout, the tape driver has to be updated to use the block queue timeout instead. The tape use of scsi_device timeout looks to be self consistent, so I don't think this necessarily fixes any bug, but it has to be done to allow me to remove the timeout parameter from struct scsi_device. Acked-by:
Kai Makisara <Kai.Makisara@kolumbus.fi> Signed-off-by:
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Finn Thain authored
On the Quadra 900 and 950 there are two ESP chips sharing one IRQ. Because the shared IRQ is edge-triggered, we must make sure that an IRQ transition from one chip doesn't go unnoticed when the shared IRQ is already active due to the other. This patch prevents interrupts getting lost so that both SCSI busses may be used simultaneously. Signed-off-by:
Finn Thain <fthain@telegraphics.com.au> Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Finn Thain authored
Fix asm constraints and arguments so as not to transfer an odd byte when there may be more words to transfer. The bug would probably also cause exceptions sometimes by transferring one too many bytes. Signed-off-by:
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Anirban Chakraborty authored
The following patch changes the handling of bus reset when issued from a vport. In the bus reset code, an extra check is made to make sure that the lip reset is not done before resetting the targets if the bus reset came from a vport. Signed-off-by:
Anirban Chakraborty <anirban.chakraborty@qlogic.com> Signed-off-by:
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Alan Stern authored
This patch (as1142b) consolidates a lot of repetitious code in scsi_io_completion(). It also fixes a few comments. Most importantly, however, it clearly distinguishes among the three sorts of retries that can be done when a command fails to complete: Unprepare the request and resubmit it, so that a new command will be created for it. Requeue the request directly so that it will be retried immediately using the same command. Requeue the request so that it will be retried following a short delay. Complete the remainder of the request with an I/O error. [jejb: Updates 1. For several error conditions, we would now print the sense twice in slightly different ways, so unify the location of sense printing. 2. I added more descriptions to actual failure conditions for better debugging 3. according to spec, ABORTED_COMMAND is supposed to be retried (except on DIF failure). Our old behaviour of erroring it looks to be a bug. 4. I'd prefer not to default initialise the action variable because that ensures that every leg of the error handler has an associated action and the compiler will warn if someone later accidentally misses one or removes one. ] Signed-off-by:Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Brian King authored
Bump driver version Signed-off-by:
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Brian King authored
The virtual fibre channel stack can return a failure response for a command indicating the port login has been invalidated without sending the client an async event. Add code to handle this response and initiate a PLOGI. Signed-off-by:
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Brian King authored
The CRQs used by the ibmvfc driver are read and written by both the client and the server. Therefore, we need to mark them volatile so that we do not cache their contents when handling an interrupt. This fixes a problem which can surface as occasional command timeouts. No commands were actually timing out, but due to accessing cached data for the CRQ in the interrupt handler, the interrupt was not processing all command completions as it should. Signed-off-by:
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Brian King authored
Fixes an oops that can occur in the interrupt handler if we get a lot of async events. Signed-off-by:
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Babu Moger authored
[jejb: fixed whitespace damage] Signed-off-by:
Babu Moger <Babu.Moger@lsi.com> Signed-off-by:
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Julia Lawall authored
ARRAY_SIZE is more concise to use when the size of an array is divided by the size of its type or the size of its first element. Signed-off-by:
Julia Lawall <julia@diku.dk> Acked-by:
"Prakash, Sathya" <Sathya.Prakash@lsi.com> Signed-off-by:
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Randy Dunlap authored
Remove excess kernel-doc function parameter notation: Warning(drivers/message/fusion/mptbase.c:964): Excess function parameter or struct member 'handle' description in 'mpt_free_msg_frame' Warning(drivers/message/fusion/mptbase.c:5434): Excess function parameter or struct member 'portnum' description in 'mpt_findImVolumes' Warning(drivers/message/fusion/mptbase.c:6949): Excess function parameter or struct member 'mr' description in 'mpt_spi_log_info' Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> cc: Eric.Moore@lsi.com Signed-off-by:
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Anirban Chakraborty authored
drivers/scsi/qla2xxx/qla_os.c: In function 'qla2x00_probe_one': drivers/scsi/qla2xxx/qla_os.c:1582: warning: 'mem_only' is used uninitialized in this function Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Anirban Chakraborty authored
Following changes have been made: 1. Outstanding commands are based on a request queue, scsi_qla_host does not maintain it anymore. 2. start_scsi is accessed via isp_ops struct instead of direct invocation. 3. Interrupt registrations are done using response queue instead of device id. Signed-off-by:
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Anirban Chakraborty authored
Following changes have been made to the qla2xxx FC driver in preparation for the multi- queue and future SR IOV hardware. 1. scsi_qla_host structure has been changed to contain scsi host specific data only. 2. A new structure, qla_hw_data is created to contain HBA specific hardware data. 3. Request and response IO specific data strucures are created. 4. The global list of fcports for the hba is not maintained anymore, instead a fcport list is construted on per scsi_qla_host. Signed-of-by:
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Vladislav Bolkhovitin authored
This patch improves handling of TASK ABORTED status by Linux SCSI mid-layer. Currently, command returned with this status considered failed and returned to upper layers. It leads to additional error recovery load on file systems and block layer, which sometimes can cause undesired side effects, like I/O errors and file systems corruptions. See http://lkml.org/lkml/2008/11/1/38, for instance. From other side, TASK ABORTED status is returned by SCSI target if the corresponding command was aborted by another initiator and the target has TAS bit set in the control mode page. So, in the majority of cases commands with TASK ABORTED status should be simply retried. In other cases, maybe_retry path will not retry if no retries are allowed. This patch implement suggestion by James Bottomley from http://marc.info/?l=linux-scsi&m=121932916906009&w=2. Signed-off-by:
Vladislav Bolkhovitin <vst@vlnb.net> Signed-off-by:
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Chandra Seetharaman authored
When the mode select sent to the controller fails with the retryable error, it is better to retry the mode_select from the hardware handler itself, instead of propagating the failure to dm-multipath. Signed-off-by:
Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by:
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Chandra Seetharaman authored
[SCSI] scsi_dh: Make sure the state of a path is set properly when controller is swapped from passive to active When the controller ownership is changed (from passive to active), check_ownership() doesn't set the state of the device to ACTIVE. Signed-off-by:
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Ilpo Järvinen authored
...and the list of recent breakage goes on and on, this time it's 242f9dcb (block: unify request timeout handling) which broke it. Signed-off-by:
Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Acked-by:
Jens Axboe <jens.axboe@oracle.com> Signed-off-by:
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Ilpo Järvinen authored
Lucky winner is 557cc476 ([SCSI] tmscsim: Fixup KERN_INFO in printk). Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by:
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roel kluin authored
When unsigned, scsi_dma_map may return -ENOMEM without triggering BUG_ON() Signed-off-by:
Roel Kluin <roel.kluin@gmail.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Julia Lawall authored
Use the macro DIV_ROUND_UP and eliminate the variable rounded_up, as suggested by Matthew Wilcox. Signed-off-by:
Matthew Wilcox <willy@linux.intel.com> Signed-off-by:
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