- 28 Jul, 2010 40 commits
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Swen Schillig authored
Some definitions and structures in the zfcp QDIO processing are improved by the removal of not required variables and processing steps. I addition the naming of some variables is changed to make their purpose more clear. Signed-off-by:
Swen Schillig <swen@vnet.ibm.com> Signed-off-by:
Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by:
James Bottomley <James.Bottomley@suse.de>
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Swen Schillig authored
A lot of functions require the amount of SBALs as one of their parameter which is most times invariable. Therefore remove this parameter and set the SBAL value explicitly if a non standard value is required. In addition the warning message "oversized data" is replaced with a BUG_ON() statement assuring the limits defined and requested by zfcp. Signed-off-by:
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Christof Schmitt authored
The timer_interval is 14 bits in width. Introduce a define for properly masking the value. Reviewed-by:
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Christof Schmitt authored
Configuring a LUN in zfcp, also creates a SCSI device. For consistency, it makes sense to remove the SCSI device when the LUN is deconfigured. Replace the flush_work with the call to scsi_remove_device: scsi_remove_device also takes the scan_mutex that synchronizes itself with any long running device discovery. Reviewed-by:
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Christof Schmitt authored
Use the functions memdup_user and kstrdup to allocate memory and copy the data in one step, saving some lines of code. Reviewed-by:
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Christof Schmitt authored
Trying to enqueue a port erp action from the port erp strategy will fail in zfcp_erp_required_act. To try the same action again, return ZFCP_ERP_FAILED. Reviewed-by:
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Christof Schmitt authored
After a timeout notification, do not try to run the erp strategy. Return from the erp with "failed" to possibly trigger a retry. Reviewed-by:
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Christof Schmitt authored
When running in non-NPIV mode, the port_reopen in terminate_rport_io might succeed even though the remote port is not available. If the same port connection is held open from another operating system, the reopen is only a virtual operation and might not hit the SAN. Fix this by changing the call to forced_reopen that forces a logout/login operation in the SAN. Reviewed-by:
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Christof Schmitt authored
When the successful return of an adisc is the final step to set the port online, the registration of SCSI devices might be omitted. SCSI devices that have been removed before (due to a short dev_loss_tmo setting) might not be attached again. The problem is that the registration of SCSI devices is done only after erp has finished. The correct place would be after the call to fc_remote_port_add to mimick the scan in the FC transport class. Change the registration of SCSI devices to be triggered after the fc_remote_port_add call. For the initial inquiry command to succeed, the unit must also be open. If the unit reopen is still pending, the inquiry command to the LUN will be deferred with DID_IMM_RETRY, so there is no harm from this approach. Reviewed-by:
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Christof Schmitt authored
When the port is already "physically closed" try the reopen instead. There is no way to send a "physically close" to an already closed port. Reviewed-by:
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Christof Schmitt authored
When the REOPEN_PORT_FORCED erp action succeeds, the port has been closed. A REOPEN_PORT will try to open the port after the REPORT_PORT_FORCED. The rport should only be unblocked after the successful completion of the reopen port. Reviewed-by:
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Alan Stern authored
This patch (as1399) adds runtime-PM support to the sd driver. The support is unsophisticated: If a SCSI disk device is mounted, or if its device file is held open, then the device will not be runtime-suspended; otherwise it will (provided userspace gives permission by writing "auto" to the sysfs power/control attribute). In order to make this work, a dev_set_drvdata() call had to be moved from sd_probe_async() to sd_probe(). Also, a few lines of code were changed to use a local variable instead of recalculating the address of an embedded struct device. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Alan Stern authored
This patch (as1398b) adds runtime PM support to the SCSI layer. Only the machanism is provided; use of it is up to the various high-level drivers, and the patch doesn't change any of them. Except for sg -- the patch expicitly prevents a device from being runtime-suspended while its sg device file is open. The implementation is simplistic. In general, hosts and targets are automatically suspended when all their children are asleep, but for them the runtime-suspend code doesn't actually do anything. (A host's runtime PM status is propagated up the device tree, though, so a runtime-PM-aware lower-level driver could power down the host adapter hardware at the appropriate times.) There are comments indicating where a transport class might be notified or some other hooks added. LUNs are runtime-suspended by calling the drivers' existing suspend handlers (and likewise for runtime-resume). Somewhat arbitrarily, the implementation delays for 100 ms before suspending an eligible LUN. This is because there typically are occasions during bootup when the same device file is opened and closed several times in quick succession. The way this all works is that the SCSI core increments a device's PM-usage count when it is registered. If a high-level driver does nothing then the device will not be eligible for runtime-suspend because of the elevated usage count. If a high-level driver wants to use runtime PM then it can call scsi_autopm_put_device() in its probe routine to decrement the usage count and scsi_autopm_get_device() in its remove routine to restore the original count. Hosts, targets, and LUNs are not suspended while they are being probed or removed, or while the error handler is running. In fact, a fairly large part of the patch consists of code to make sure that things aren't suspended at such times. [jejb: fix up compile issues in PM config variations] Signed-off-by:
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Alan Stern authored
This patch (as1397b) converts the SCSI midlayer to use the new PM callbacks (struct dev_pm_ops). A new source file, scsi_pm.c, is created to hold the new callback routines, and the existing suspend/resume code is moved there. Signed-off-by:
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James Bottomley authored
We have two separate definitions for identical constants with nearly the same name. One comes from the generic headers in scsi.h; the other is an enum in libsas.h ... it's causing confusion about which one is correct (fortunately they both are). Fix this by eliminating the libsas.h duplicate Signed-off-by: -
Tomas Henzl authored
We should release the resources in error return code path. The requested pci bars should be released under an error condition, when mpt_mapresources fails. Signed-off-by:
Tomas Henzl <thenzl@redhat.com> Acked-by:
"Desai, Kashyap" <Kashyap.Desai@lsi.com> Signed-off-by:
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Kashyap, Desai authored
Version upgrade patch. Signed-off-by:
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Kashyap, Desai authored
Adding function name in original debug prints and few more debug prints are added. Signed-off-by:
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Kashyap, Desai authored
Issue description: In multipath topology, when device deletion is in transient state, multipath driver can call blk_flush_queue() as part of path failure. Before device get deleted from OS, Device may go OFFLINE as part of error handling kicked off triggered from multipathing driver. Above condition hits more frequently if device missing delay timer (which is LSI specific firmware parameter) is non zero value. root cause of this issue is Error handling thread is getting kicked off for device which is not really present(in transient state of deleting). This patch has solution for this issue. driver is now using eh_timed_out callback. See below. mptsas_transport_template->eh_timed_out = mptsas_eh_timed_out Using mptsas_eh_timed_out function, driver can decide weather vdevice is under Device missing delay or deleting state. for either of those cases, there is BLK_EH_RESET_TIMER return to scsi mid and error handling thread will not be kicked off for that particular scsi command. Signed-off-by:
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Peter Huewe authored
Add the __init and __exit macros to the module_init / module_exit functions from drivers/scsi/ibmvscsi/ibmvstgt.c Signed-off-by:
Peter Huewe <peterhuewe@gmx.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Acked-by:
Brian King <brking@linux.vnet.ibm.com> Signed-off-by:
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Rolf Eike Beer authored
Signed-off-by:
Rolf Eike Beer <eike-kernel@sf-tec.de> Acked-by:
Achim Leubner <Achim_Leubner@pmc-sierra.com> Signed-off-by:
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Arun Easi authored
Signed-off-by:
Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by:
Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by:
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Andrew Vasquez authored
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Giridhar Malavali authored
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Giridhar Malavali authored
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Giridhar Malavali authored
Re-organized and cleaned up the ISP82xx specific code. Signed-off-by:
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Harish Zunjarrao authored
Signed-off-by:
Harish Zunjarrao <harish.zunjarrao@qlogic.com> Signed-off-by:
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Harish Zunjarrao authored
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Madhuranath Iyengar authored
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Chad Dupuis authored
This function was added to encapsulate freeing the memory for all the fcports associated with a particular vha. Also added a call to qla2x00_free_fcports() to qla2x00_free_device() to free the memory for all the fcports associated with a vha during device removal. Signed-off-by:
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Andrew Vasquez authored
If BIOS is enabled then drivers init firmware fails since BIOS has done the init once. Signed-off-by:
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Duane Grigsby authored
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Andrew Vasquez authored
Earlier implementation did not take into account the varying sizes of data buffers returned from structures sts_entry_t and sts_entry_24xx. Sense-data after the 20th byte could be incorrect. Signed-off-by:
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Madhuranath Iyengar authored
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Chad Dupuis authored
The default method that qla2xxx uses is the GID_PT nameserver command to get a list of Nx_Ports. This patch adds a GFF_ID call for each port returned by GID_PT to get the FC4 type. If the FC4 type is not FCP SCSI then the qla2xxx driver will not record that port in it's port database. For switches that do not support the GFF_ID command, the behavior will be for qla2xxx to store that port anyways. Signed-off-by:
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Madhuranath Iyengar authored
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Giridhar Malavali authored
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Madhuranath Iyengar authored
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Mike Christie authored
wait for session to come online in eh_device_reset_handler and eh_target_reset_handler Signed-off-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by:
Ravi Anand <ravi.anand@qlogic.com> Signed-off-by:
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Vikas Chaudhary authored
Added support to modify session->recovery_tmo from sysfs Signed-off-by:
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