ae0751ffc77e7f21629970fdab5528c573e637f8 |
|
05-Dec-2011 |
Lin Ming <ming.m.lin@intel.com> |
[SCSI] add flag to skip the runtime PM calls on the host With previous change, now the ata port runtime suspend will happen as: disk suspend --> scsi target suspend --> scsi host suspend --> ata port suspend ata port(parent device) suspend need to schedule scsi EH which will resume scsi host(child device). Then the child device resume will in turn make parent device resume first. This is kind of recursive. This patch adds a new flag Scsi_Host::eh_noresume. ata port will set this flag to skip the runtime PM calls on scsi host. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
|
76e4e12ff2b3ef86773989fd897b194eb38016e6 |
|
25-Aug-2011 |
Mike Christie <michaelc@cs.wisc.edu> |
[SCSI] scsi scan: don't fail scans when host is in recovery The problem is that if we are doing a scsi scan then the device goes into recovery then we will wait for the recovery to complete. It waits because scsi-ml will send inquiries or report luns and the queueing code will have been blocked due to the host not being ready. However, if we are in recovery and then a scan is started the scan will silently fail and some devices will not be added. It is easy to hit the problem where devices do not show up with FC where we are doing tests that disrupt the target controllers. When the controller is disruprted (reboot, or setting firmware, etc), and we cause the dev loss tmo to fire then devices will be removed Then when the problem has been fixed, the rport will be scanned and devices should be added back. But if we cause another disruption before scanning has started then devices will not get added back. If the problem is not started until the scan is started then the devices will be added back. This patch fixes that problem by not failing scans when the host is in recovery. We will let scsi-ml send the IO and let the queueing and scsi error handling deal with it like is done if we went into recovery while scanning. For recovery cases where the host is being torn down then with the patch we will still fail the scan since there is not point in scanning. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
|
2944369144548432f3a5ffce7a2926bfb4ce4f0a |
|
12-Aug-2011 |
Vikas Chaudhary <vikas.chaudhary@qlogic.com> |
[SCSI] scsi: Added support for adapter and firmware reset Added new sysfs attr 'host_reset' in scsi_sysfs.c to perform adapter or firmware reset as suggested by Mike Christie here: http://marc.info/?l=linux-scsi&m=127359347111167&w=2 user/application can write "adapter" or "firmware" on this attr and it will call newly added function hook in scsi_host_template to call LDD adapter or firmware reset implementation. Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
|
25985edcedea6396277003854657b5f3cb31a628 |
|
31-Mar-2011 |
Lucas De Marchi <lucas.demarchi@profusion.mobi> |
Fix common misspellings Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
|
f281233d3eba15fb225d21ae2e228fd4553d824a |
|
16-Nov-2010 |
Jeff Garzik <jeff@garzik.org> |
SCSI host lock push-down Move the mid-layer's ->queuecommand() invocation from being locked with the host lock to being unlocked to facilitate speeding up the critical path for drivers who don't need this lock taken anyway. The patch below presents a simple SCSI host lock push-down as an equivalent transformation. No locking or other behavior should change with this patch. All existing bugs and locking orders are preserved. Additionally, add one parameter to queuecommand, struct Scsi_Host * and remove one parameter from queuecommand, void (*done)(struct scsi_cmnd *) Scsi_Host* is a convenient pointer that most host drivers need anyway, and 'done' is redundant to struct scsi_cmnd->scsi_done. Minimal code disturbance was attempted with this change. Most drivers needed only two one-line modifications for their host lock push-down. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
13f05c8d8e98bbdce89158bfdb2e380940695a88 |
|
10-Sep-2010 |
Martin K. Petersen <martin.petersen@oracle.com> |
block/scsi: Provide a limit on the number of integrity segments Some controllers have a hardware limit on the number of protection information scatter-gather list segments they can handle. Introduce a max_integrity_segments limit in the block layer and provide a new scsi_host_template setting that allows HBA drivers to provide a value suitable for the hardware. Add support for honoring the integrity segment limit when merging both bios and requests. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <axboe@carl.home.kernel.dk>
|
72ec24bd7725545bc149d80cbd21a7578d9aa206 |
|
15-May-2010 |
Tejun Heo <tj@kernel.org> |
SCSI: implement sd_unlock_native_capacity() Implement sd_unlock_native_capacity() method which calls into hostt->unlock_native_capacity() if implemented. This will be invoked by block layer if partitions extend beyond the end of the device and can be used to implement, for example, on-demand ATA host protected area unlocking. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
|
d139b9bd0e52dda14fd13412e7096e68b56d0076 |
|
05-Nov-2009 |
James Bottomley <James.Bottomley@suse.de> |
[SCSI] scsi_lib_dma: fix bug with dma maps on nested scsi objects Some of our virtual SCSI hosts don't have a proper bus parent at the top, which can be a problem for doing DMA on them This patch makes the host device cache a pointer to the physical bus device and provides an extra API for setting it (the normal API picks it up from the parent). This patch also modifies the qla2xxx and lpfc vport logic to use the new DMA host setting API. Acked-By: James Smart <james.smart@emulex.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
|
e881a172dac4d9ea3b2a1540041d872963c269bd |
|
16-Oct-2009 |
Mike Christie <michaelc@cs.wisc.edu> |
[SCSI] modify change_queue_depth to take in reason why it is being called This patch modifies scsi_host_template->change_queue_depth so that it takes an argument indicating why it is being called. This will be used so that if a LLD needs to do some extra processing when handling queue fulls or later ramp ups, it can do so. This is a simple port of the drivers setting a change_queue_depth callback. In the patch I just have these LLDs adjust the queue depth if the user was requesting it. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> [Vasu.Dev: v2 Also converted pmcraid_change_queue_depth and then verified all modules compile using "make allmodconfig" for any new build warnings on X86_64. Updated original description after combing two original patches from Mike to make this patch git bisectable.] Signed-off-by: Vasu Dev <vasu.dev@intel.com> [jejb: fixed up 53c700] Signed-off-by: James Bottomley <James.Bottomley@suse.de>
|
b2b465e9280b739a528435d2916c0a5c1b4eb100 |
|
30-Oct-2009 |
Martin K. Petersen <martin.petersen@oracle.com> |
[SCSI] Fix incorrect reporting of host protection capabilities The advent of DIF Type 2 devices exposed some missing break statements in the protection mask switch constructs. However, rewriting the code to use an index into a small static array seemed like a more elegant solution. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
|
35e1a5d90b66487d754ef2f2dcbf1007f806d921 |
|
18-Sep-2009 |
Martin K. Petersen <martin.petersen@oracle.com> |
[SCSI] sd: Detach DIF from block integrity infrastructure So far we have only issued DIF commands if CONFIG_BLK_DEV_INTEGRITY is enabled. However, communication between initiator and target should be independent of protection information DMA. There are DIF-only host adapters coming out that will be able to take advantage of this. Move the relevant DIF bits to sd.c. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
|
9e4f5e29610162fd426366f3b29e3cc6e575b858 |
|
26-Mar-2009 |
James Smart <James.Smart@Emulex.Com> |
[SCSI] FC Pass Thru support Attached is the ELS/CT pass-thru patch for the FC Transport. The patch creates a generic framework that lays on top of bsg and the SGIO v4 ioctl in order to pass transaction requests to LLDD's. The interface supports the following operations: On an fc_host basis: Request login to the specified N_Port_ID, creating an fc_rport. Request logout of the specified N_Port_ID, deleting an fc_rport Send ELS request to specified N_Port_ID w/o requiring a login, and wait for ELS response. Send CT request to specified N_Port_ID and wait for CT response. Login is required, but LLDD is allowed to manage login and decide whether it stays in place after the request is satisfied. Vendor-Unique request. Allows a LLDD-specific request to be passed to the LLDD, and the passing of a response back to the application. On an fc_rport basis: Send ELS request to nport and wait for ELS response. Send CT request to nport and wait for CT response. The patch also exports several headers from include/scsi such that they can be available to user-space applications: include/scsi/scsi.h include/scsi/scsi_netlink.h include/scsi/scsi_netlink_fc.h include/scsi/scsi_bsg_fc.h For further information, refer to the last RFC: http://marc.info/?l=linux-scsi&m=123436574018579&w=2 Note: Documentation is still spotty and will be added later. [bharrosh@panasas.com: update for new block API] Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
242f9dcb8ba6f68fcd217a119a7648a4f69290e9 |
|
14-Sep-2008 |
Jens Axboe <jens.axboe@oracle.com> |
block: unify request timeout handling Right now SCSI and others do their own command timeout handling. Move those bits to the block layer. Instead of having a timer per command, we try to be a bit more clever and simply have one per-queue. This avoids the overhead of having to tear down and setup a timer for each command, so it will result in a lot less timer fiddling. Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
|
4469f9878059f1707f021512e6b34252c4096ee7 |
|
17-Jul-2008 |
Martin K. Petersen <martin.petersen@oracle.com> |
[SCSI] Host protection capabilities Controllers that support protection information must indicate this to the SCSI midlayer so that the ULD can prepare scsi_cmnds accordingly. This patch implements a host mask and various types of protection: - DIF Type 1-3 (between HBA and disk) - DIX Type 0-3 (between OS and HBA) The patch also allows the HBA to set the guard type to something different than the T10-mandated CRC. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
6d49f63b415ca02223e01e187076cb69a5a38eaf |
|
15-Jul-2008 |
Matthew Wilcox <matthew@wil.cx> |
[SCSI] Make host_no an unsigned int Daniel Debonzi reports that he has managed to wrap host_no. Increasing the number of host numbers available to 32-bit from 16-bit allows the problem to be evaded for another hundred years. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
aab0de245150c09e61c30962feb16aacde508dc3 |
|
02-May-2008 |
Kay Sievers <kay.sievers@vrfy.org> |
driver core: remove KOBJ_NAME_LEN define Kobjects do not have a limit in name size since a while, so stop pretending that they do. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
db4742dd8f0aa9125b74f9b2516336a75f3d9106 |
|
30-Apr-2008 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] add support for variable length extended commands Add support for variable-length, extended, and vendor specific CDBs to scsi-ml. It is now possible for initiators and ULD's to issue these types of commands. LLDs need not change much. All they need is to raise the .max_cmd_len to the longest command they support (see iscsi patch). - clean-up some code paths that did not expect commands to be larger than 16, and change cmd_len members' type to short as char is not enough. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
ee959b00c335d7780136c5abda37809191fe52c3 |
|
22-Feb-2008 |
Tony Jones <tonyj@suse.de> |
SCSI: convert struct class_device to struct device It's big, but there doesn't seem to be a way to split it up smaller... Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
|
30bd7df8ced23eefec87a5cda96dc99b002ed9da |
|
01-Mar-2008 |
Mike Christie <michaelc@cs.wisc.edu> |
[SCSI] scsi_error: add target reset handler The problem is that serveral drivers are sending a target reset from the device reset handler, and if we have multiple devices a target reset gets sent for each device when only one would be sufficient. And if we do a target reset it affects all the commands on the target so the device reset handler code only cleaning up one devices's commands makes programming the driver a little more difficult than it should be. This patch adds a target reset handler, which drivers can use to send a target reset. If successful it cleans up the commands for a devices accessed through that starget. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
4660c8ed5aaed99d82785499f034a8cc9199866d |
|
10-Feb-2008 |
James Bottomley <James.Bottomley@HansenPartnership.com> |
[SCSI] update SG_ALL to avoid causing chaining Since the sg chaining patches went in, our current value of 255 for SG_ALL excites chaining on some drivers which cannot support it (and would thus oops). Redefine SG_ALL to mean no sg table size preference, but use the single allocation (non chained) limit. This also helps for drivers that use it to size an internal table. We'll do an opt in system later where truly chaining supporting drivers can define their sg_tablesize to be anything up to SCSI_MAX_SG_CHAIN_ELEMENTS. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
d850bd34f5b2a52ccec90188ad86165f940693e9 |
|
05-Feb-2008 |
Pavel Machek <pavel@ucw.cz> |
[SCSI] Small cleanups for scsi_host.h Small cleanups in scsi_host.h. Few #defines make me wonder if their description is still up to date..? Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
d3f46f39b7092594b498abc12f0c73b0b9913bde |
|
15-Jan-2008 |
James Bottomley <James.Bottomley@HansenPartnership.com> |
[SCSI] remove use_sg_chaining With the sg table code, every SCSI driver is now either chain capable or broken (or has sg_tablesize set so chaining is never activated), so there's no need to have a check in the host template. Also tidy up the code by moving the scatterlist size defines into the SCSI includes and permit the last entry of the scatterlist pools not to be a power of two. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
30b0c37b27485a9cb897bfe3824f6f517b8c80d6 |
|
13-Dec-2007 |
Boaz Harrosh <bharrosh@panasas.com> |
[SCSI] implement scsi_data_buffer In preparation for bidi we abstract all IO members of scsi_cmnd, that will need to duplicate, into a substructure. - Group all IO members of scsi_cmnd into a scsi_data_buffer structure. - Adjust accessors to new members. - scsi_{alloc,free}_sgtable receive a scsi_data_buffer instead of scsi_cmnd. And work on it. - Adjust scsi_init_io() and scsi_release_buffers() for above change. - Fix other parts of scsi_lib/scsi.c to members migration. Use accessors where appropriate. - fix Documentation about scsi_cmnd in scsi_host.h - scsi_error.c * Changed needed members of struct scsi_eh_save. * Careful considerations in scsi_eh_prep/restore_cmnd. - sd.c and sr.c * sd and sr would adjust IO size to align on device's block size so code needs to change once we move to scsi_data_buff implementation. * Convert code to use scsi_for_each_sg * Use data accessors where appropriate. - tgt: convert libsrp to use scsi_data_buffer - isd200: This driver still bangs on scsi_cmnd IO members, so need changing [jejb: rebased on top of sg_table patches fixed up conflicts and used the synergy to eliminate use_sg and sg_count] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
|
9cb83c7529d929c00f37d821daed1942a1b20602 |
|
16-Oct-2007 |
FUJITA Tomonori <tomof@acm.org> |
[SCSI] add use_sg_chaining option to scsi_host_template This option is true if a low-level driver can support sg chaining. This will be removed eventually when all the drivers are converted to support sg chaining. q->max_phys_segments is set to SCSI_MAX_SG_SEGMENTS if false. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
|
12a441622b753684cc73d1c6f225e9ac53e0bf77 |
|
19-Sep-2007 |
Matthew Wilcox <matthew@wil.cx> |
[SCSI] Remove ->pid field from scsi_cmnd The pid field is a duplicate of the serial_number field and has been scheduled for removal for a long time. A few drivers were still using it, so just change them to use serial_number instead. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
5dc2b89e124251662f580f4ba3c9f6195d1eaff6 |
|
31-Aug-2007 |
FUJITA Tomonori <tomof@acm.org> |
[SCSI] add supported_mode and active_mode attributes to the host This adds supported_mode and active_mode attributes to /sys/class/sys_host/hostX/ for specifying the mode that a lld supports and the currently activated mode. The output format is similar to fc rport roles: luce:/sys/class/scsi_host/host0$ cat supported_mode Initiator luce:/sys/class/scsi_host/host0$ cat active_mode Initiator The mode values uses bitmap since we would support dual-mode llds in the future like this: luce:/sys/class/scsi_host/host0$ cat supported_mode Initiator, Target The supported_mode attribute looks at a scsi_host_template and the active_mode attribute looks at a scsi_host. We would add a hook to a scsi_host_template to change the active_mode attribute dynamically. But now there is no hook since no lld supports that feature. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
bfb743740e1598d3030c4972a8808f2bb5b95b6b |
|
11-Jul-2007 |
FUJITA Tomonori <tomof@acm.org> |
[SCSI] tgt: move tsk_mgmt_response callback to transport class This moves tsk_mgmt_response callback in struct scsi_host_template to struct scsi_transport_template since struct scsi_transport_template is more suitable for the task management stuff. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
2c47f9efbedbe5749b6bb16e59bc11d6e460855f |
|
11-Jul-2007 |
FUJITA Tomonori <tomof@acm.org> |
[SCSI] tgt: add I_T nexus support tgt uses scsi_host as I_T nexus. This works for ibmvstgt because it creates one scsi_host for one initiator. However, other target drivers don't work like that. This adds I_T nexus support, which enable one scsi_host to handle multiple initiators. New scsi_tgt_it_nexus_create/destroy functions are expected be called transport classes. For example, ibmvstgt creates an initiator remote port, then the srp transport calls tgt_it_nexus_create. tgt doesn't manages I_T nexus, instead it tells tgtd, user-space daemon, to create a new I_T nexus. On the receiving the response from tgtd, tgt calls shost->transportt->it_nexus_response. transports should notify a lld. The srp transport uses it_nexus_response callback in srp_function_template to do that. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
b02b6bc46571b21a545c9e697df1e226ff22bc81 |
|
10-May-2007 |
Kristian Høgsberg <krh@redhat.com> |
[SCSI] Make scsi_host_template::proc_name const char * instead of char *. Signed-off-by: Kristian Høgsberg <krh@redhat.com> collapsed with fw-sbp2 patch "Drop cast to non-const char * in host template initialization." from Kristian Høgsberg Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
bcd92c9fbcc679ee95003083056f0441a1f474fa |
|
31-May-2007 |
Christoph Hellwig <hch@lst.de> |
[SCSI] introduce shost_priv helper Currently accessing the scsi host private data is rather messy because it comes as an unsigned long that always needs a cast first. This patch introduces a helper that does the cast called shost_priv. It's similar in spirit to netdev_priv for network drivers. This is the first patch introducing the macro, and the second patch in the series will convert esp and it's subdrivers as an example. Further conversion will wait until the helper is in the tree to make patch juggling easier. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
1dfcda06a67d6ad6f890dbd1bab84be5f17ef46d |
|
21-Mar-2007 |
Tejun Heo <htejun@gmail.com> |
[SCSI] kill scsi host template suspend/resume With libata converted to use sdev->manage_start_stop for suspend and resume, sht->suspend/resume() has no user left and low level suspend/ressume should be taken care of by low level driver's suspend/resume callbacks (e.g. PCI or PCMCIA driver callbacks). This patch removes sht->suspend/resume() callbacks. This change is suggested by Christoph Hellwig. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
6c5f8ce1fb7e8925d957f754a9513911399791b9 |
|
16-Mar-2007 |
James Bottomley <James.Bottomley@steeleye.com> |
[SCSI] expose eh_timed_out to the host template It looks like megaraid_sas at least needs this to throttle its commands as they begin to time out. The code keeps the existing transport template use of eh_timed_out (and allows the transport to override the host if they both have this callback). Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
bc7e380a6a4c94f79a49c36bdb28062a750b3c2b |
|
03-Mar-2007 |
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> |
[SCSI] tgt: fix sesnse buffer problems This patch simplify the way to notify LLDs of the command completion and addresses the following sense buffer problems: - can't handle both data and sense. - forces user-space to use aligned sense buffer tgt copies sense_data from userspace to cmnd->sense_buffer (if necessary), maps user-space pages (if necessary) and then calls host->transfer_response (host->transfer_data is removed). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
b58d91547fb17c65ad621f3f98b1f2c228c812a5 |
|
16-Nov-2006 |
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> |
[SCSI] export scsi-ml functions needed by tgt_scsi_lib and its LLDs This patch contains the needed changes to the scsi-ml for the target mode support. Note, per the last review we moved almost all the fields we added to the scsi_cmnd to our internal data structure which we are going to try and kill off when we can replace it with support from other parts of the kernel. The one field we left on was the offset variable. This is needed to handle the case where the target gets request that is so large that it cannot execute it in one dma operation. So max_secotors or a segment limit may limit the size of the transfer. In this case our tgt core code will break up the command into managable transfers and send them to the LLD one at a time. The offset is then used to tell the LLD where in the command we are at. Is there another field on the scsi_cmd for that? Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
1aa8fab2acf1cb8b341131b726773fcff0abc707 |
|
22-Nov-2006 |
Matthew Wilcox <matthew@wil.cx> |
[SCSI] Make scsi_scan_host work for drivers which find their own targets If a driver can find its own targets, it can now fill in scan_finished and (optionally) scan_start in the scsi_host_template. Then, when it calls scsi_scan_host(), it will be called back (from a thread if asynchronous discovery is enabled), first to start the scan, and then at intervals to check if the scan is completed. Also make scsi_prep_async_scan and scsi_finish_async_scan static. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
4f777ed26086452737ea52597cf8de26137090d5 |
|
04-Nov-2006 |
Christoph Hellwig <hch@lst.de> |
[SCSI] kill scsi_assign_lock scsi_assign_lock has been unused for a long time and is a bad idea in general, so kill it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
3e082a910d217b2e7b186077ebf5a1126a68c62f |
|
28-Sep-2006 |
Matthew Wilcox <matthew@wil.cx> |
[SCSI] Add ability to scan scsi busses asynchronously Since it often takes around 20-30 seconds to scan a scsi bus, it's highly advantageous to do this in parallel with other things. The bulk of this patch is ensuring that devices don't change numbering, and that all devices are discovered prior to trying to start init. For those who build SCSI as modules, there's a new scsi_wait_scan module that will ensure all bus scans are finished. This patch only handles drivers which call scsi_scan_host. Fibre Channel, SAS, SATA, USB and Firewire all need additional work. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
86e33a296c2c9ed6eece0bfff4ac776f42040504 |
|
30-Aug-2006 |
James Bottomley <James.Bottomley@steeleye.com> |
[SCSI] add shared tag map helpers This patch adds support for sharing tag maps at the host level (i.e. either every queue [LUN] has its own tag map or there's a single one for the entire host). This formulation is primarily intended to help single issue queue hardware, like the aic7xxx Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
d7a1bb0a04ca835bffc0a91e64ab827dfba7d8f5 |
|
08-Mar-2006 |
James Smart <James.Smart@Emulex.Com> |
[SCSI] Block I/O while SG reset operation in progress - the midlayer patch The scsi midlayer portion of the patch Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
ee7863bc68fa6ad6fe7cfcc0e5ebe9efe0c0664e |
|
15-May-2006 |
Tejun Heo <htejun@gmail.com> |
[PATCH] SCSI: implement shost->host_eh_scheduled libata needs to invoke EH without scmd. This patch adds shost->host_eh_scheduled to implement such behavior. Currently the only user of this feature is libata and no general interface is defined. This patch simply adds handling for host_eh_scheduled where needed and exports scsi_eh_wakeup() to modules. The rest is upto libata. This is the result of the following discussion. http://thread.gmane.org/gmane.linux.scsi/23853/focus=9760 In short, SCSI host is not supposed to know about exceptions unrelated to specific device or command. Such exceptions should be handled by transport layer proper. However, the distinction is not essential to ATA and libata is planning to depart from SCSI, so, for the time being, libata will be using SCSI EH to handle such exceptions. Signed-off-by: Tejun Heo <htejun@gmail.com>
|
9227c33de80ac01f269ed33624990ce84358e419 |
|
01-Apr-2006 |
Christoph Hellwig <hch@lst.de> |
[PATCH] move ->eh_strategy_handler to the transport class Overriding the whole EH code is a per-transport, not per-host thing. Move ->eh_strategy_handler to the transport class, same as ->eh_timed_out. Downside is that scsi_host_alloc can't check for the total lack of EH anymore, but the transition period from old EH where we needed it is long gone already. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
|
082776e4be791736c32baf818e50f501a7f83819 |
|
23-Mar-2006 |
Nigel Cunningham <ncunningham@cyclades.com> |
[PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE. At the moment libata doesn't pass pm_message_t down ata_device_suspend. This causes drives to be powered down when we just want a freeze, causing unnecessary wear and tear. This patch gets pm_message_t passed down so that it can be used to determine whether to power down the drive. Signed-off-by: Nigel Cunningham <nigel@suspend2.net> drivers/scsi/libata-core.c | 5 +++-- drivers/scsi/libata-scsi.c | 4 ++-- drivers/scsi/scsi_sysfs.c | 2 +- include/linux/libata.h | 4 ++-- include/scsi/scsi_host.h | 2 +- 5 files changed, 9 insertions(+), 8 deletions(-) Signed-off-by: Jeff Garzik <jeff@garzik.org>
|
c829c394165f981d49f05a9be228404d7a9398d4 |
|
13-Mar-2006 |
James Smart <James.Smart@Emulex.Com> |
[SCSI] FC transport : Avoid device offline cases by stalling aborts until device unblocked This moves the eh_timed_out functionality from the scsi_host_template to the transport_template. Given that this is now a transport function, the EH_RESET_TIMER case no longer caps the timer reschedulings. The transport guarantees that this is not an infinite condition. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
dfcd77d16b5745fbfea7d5636f15fc80cc05fef8 |
|
25-Jan-2006 |
Tetsuo Takata <takatan.linux@gmail.com> |
[SCSI] Remove host template ordered_flush variable After the recent overhaul of the block layer the variable "ordered_flush" is no longer used. Signed-off-by: Tetsuo Takata <takatatt@intellilink.co.jp> Signed-off-by: Jens Axboe <axboe@suse.de>
|
0b9506723826c68b50fa33e345700ddcac1bed36 |
|
11-Jan-2006 |
Arjan van de Ven <arjan@infradead.org> |
[SCSI] turn most scsi semaphores into mutexes the scsi layer is using semaphores in a mutex way, this patch converts these into using mutexes instead Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
9b847548663ef1039dd49f0eb4463d001e596bc3 |
|
06-Jan-2006 |
Jens Axboe <axboe@suse.de> |
[PATCH] Suspend support for libata This patch adds suspend patch to libata, and ata_piix in particular. For most low level drivers, they should just need to add the 4 hooks to work. As I can only test ata_piix, I didn't enable it for more though. Suspend support is the single most important feature on a notebook, and most new notebooks have sata drives. It's quite embarrassing that we _still_ do not support this. Right now, it's perfectly possible to suspend the drive in mid-transfer. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
|
461d4e90c8cd049718884cd17c955e231140d3be |
|
06-Jan-2006 |
Tejun Heo <htejun@gmail.com> |
[BLOCK] update SCSI to use new blk_ordered for barriers All ordered request related stuff delegated to HLD. Midlayer now doens't deal with ordered setting or prepare_flush callback. sd.c updated to deal with blk_queue_ordered setting. Currently, ordered tag isn't used as SCSI midlayer cannot guarantee request ordering. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jens Axboe <axboe@suse.de>
|
7dfdc9a52b4219fba8240750e36de5db860ddd5f |
|
31-Oct-2005 |
Christoph Hellwig <hch@lst.de> |
[SCSI] use a completion in scsi_send_eh_cmnd scsi_send_eh_cmnd currently uses a semaphore and an overload of eh_timer to either get a completion for a command for a timeout. Switch to using a completion and wait_for_completion_timeout to simply the code and not having to deal with the races ourselves. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
474838d5e5b5fa768803abc5522ae3fdf85c5f4e |
|
29-Oct-2005 |
Christoph Hellwig <hch@lst.de> |
[SCSI] remove Scsi_Host.eh_active now that the abuse in qla2xxx is gone this field can be remove. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
13ec92b33e4f41b81b3a237ad1d9a588a81f2f03 |
|
25-Oct-2005 |
Jeff Garzik <jgarzik@pobox.com> |
[SCSI] kill unused scsi_scan_single_target() Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
9ccfc756a70d454dfa82f48897e2883560c01a0e |
|
02-Oct-2005 |
James Bottomley <James.Bottomley@steeleye.com> |
[SCSI] move the mid-layer printk's over to shost/starget/sdev_printk This should eliminate (at least in the mid layer) to make numeric assumptions about any of the enumeration variables. As a side effect, it will also make all the messages consistent and line us up nicely for the error logging strategy (if it ever shows itself again). Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
3ed7a4704beb66a155acd67b78b7e9a5674d55fb |
|
19-Sep-2005 |
James Bottomley <jejb@titanic.(none)> |
[SCSI] Fix thread termination for the SCSI error handle From: Alan Stern <stern@rowland.harvard.edu> This patch (as561) fixes the error handler's thread-exit code. The kthread_stop call won't wake the thread from a down_interruptible, so the patch gets rid of the semaphore and simply does set_current_state(TASK_INTERRUPTIBLE); Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Modified to simplify the termination loop and correct the sleep condition. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
939647ee308e0ad924e776657704c7bedd498664 |
|
18-Sep-2005 |
James Bottomley <James.Bottomley@steeleye.com> |
[SCSI] fix oops on usb storage device disconnect We fix the oops by enforcing the host state model. There have also been two extra states added: SHOST_CANCEL_RECOVERY and SHOST_DEL_RECOVERY so we can take the model through host removal while the recovery thread is active. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
c5478def7a3a2dba9ceda452c2aa3539514d30a9 |
|
06-Sep-2005 |
Christoph Hellwig <hch@lst.de> |
[SCSI] switch EH thread startup to the kthread API Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
47ba39eead9f4495cd6a3eca39d7c73d0f0d61c9 |
|
30-Jul-2005 |
James Bottomley <jejb@titanic.(none)> |
[SCSI] add template for scsi_host_set_state() Fixes up some warnings in the tree. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
82f29467a025f6a2192d281e97fca0be46e905cc |
|
16-Jun-2005 |
Mike Anderson <andmike@us.ibm.com> |
[SCSI] host state model update: mediate host add/remove race Add support to not allow additions to a host when it is being removed. Signed-off-by: Mike Anderson <andmike@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
d3301874083874f8a0ac88aa1bb7da6b62df34d2 |
|
16-Jun-2005 |
Mike Anderson <andmike@us.ibm.com> |
[SCSI] host state model update: replace old host bitmap state Migrate the current SCSI host state model to a model like SCSI device is using. Signed-off-by: Mike Anderson <andmike@us.ibm.com> Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
12413197eef2a29e0b9fb0fa541f5cbaeb1d3f3f |
|
11-Jun-2005 |
Christoph Hellwig <hch@lst.de> |
[SCSI] remove scsi_set_device scsi_add_host is the proper place to set the device, but people copy the scsi_set_device usage from older drivers again and again. note that this leaves some legacy drivers like qlogicisp/qlogicfc without pci association in sysfs, but they're scheduled to go away soon anyway. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
a283bd37d00e92e8874ca6325ae071691d4db388 |
|
24-May-2005 |
James Bottomley <James.Bottomley@steeleye.com> |
[SCSI] Add target alloc/destroy callbacks to the host template This gives the HBA driver notice when a target is created and destroyed to allow it to manage its own target based allocations accordingly. This is a much reduced verson of the original patch sent in by James.Smart@Emulex.com Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
06f81ea8ca09b880cadf101d7e23b500e9c164bc |
|
17-Apr-2005 |
<htejun@gmail.com> |
[PATCH] scsi: remove volatile from scsi data This patch removes volatile qualifier from scsi_device->device_busy, Scsi_Host->host_busy and ->host_failed as the volatile qualifiers don't serve any purpose now. While at it, convert those fields from unsigned short to unsigned int as suggested by Christoph. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
|
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
|
17-Apr-2005 |
Linus Torvalds <torvalds@ppc970.osdl.org> |
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
|