- 28 Jul, 2010 40 commits
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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:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
James Bottomley <James.Bottomley@suse.de>
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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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FUJITA Tomonori authored
After blk_rq_map_user is successful, if we find that a device is unavailable (was detached), we must call blk_end_request_all to free bio(s) before blk_rq_unmap_user and blk_put_request. Reported-by:
"Dailey, Nate" <Nate.Dailey@stratus.com> Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Tested-by:
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Vasu Dev authored
This check prevents FCF selection in NPV mode due to zero fabric name in that case and in turn flogi fails. Though NPV mode should not have this zero and should be fixed there also but spec also does not require initiator to ensure that fabric name must be non-zero, therefore dropping this check to get flogi working in NPV mode. Signed-off-by:
Vasu Dev <vasu.dev@intel.com> Signed-off-by:
Robert Love <robert.w.love@intel.com> Signed-off-by:
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Bhanu Prakash Gollapudi authored
Call fc_lport_error to retry upto max retry count when FLOGI/SCR/NS gets rejected. Signed-off-by:
Bhanu Prakash Gollapudi <bprakash@broadcom.com> Signed-off-by:
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Vasu Dev authored
This reverts commit cc0136c2. That commit introduced vlan id info to WWPN but WWPN needs to remain static as an unique port identifier in the fabric, therefore variable fabric vlan id info doesn't need to be coded inside WWPN. After this revert, port arg to fcoe_wwn_from_mac is always zero but still leaving it as-is okay to later allow users to use NAA 2 scheme with this additional port arg. Note with this patch, existing zoning using WWPN would require re-zoning this time only and later no more re-zoning due to any vlan id changes. Signed-off-by:
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Yi Zou authored
Currently, when FCoE netdev feature flags are toggled by the LLD, lport's corresponding flags are not updated. This causes the fc_fcp to still try to offload the I/O. This patch adds support of NETDEV_FEAT_CHANGE event in fcoe netdev device notification callback so we can update the lport offload flags appropriately. Signed-off-by:
Yi Zou <yi.zou@intel.com> Signed-off-by:
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Joe Eykholt authored
Incoming requests shouldn't require a local exchange if we're just going to reply with one or two frames and don't expect anything further. Don't allocate exchanges for such requests until requested by the upper-layer protocol. The sequence is always NULL for new requests, so remove that as an argument to request handlers. Also change the first argument to lport->tt.seq_els_rsp_send from the sequence pointer to the received frame pointer, to supply the exchange IDs and destination ID info. Signed-off-by:
Joe Eykholt <jeykholt@cisco.com> Signed-off-by:
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Joe Eykholt authored
For incoming ELS and FCP requests, we often don't require an exchange and sequence, however, sometimes we do. For those cases, (primarily FCP requests for targets) add a function to set up the exchange and sequence. Signed-off-by:
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Joe Eykholt authored
Add functions to fill in an FC header given a request header. These reduces code lines in fc_lport and fc_rport and works without an exchange/sequence assigned. fc_fill_reply_hdr() fills a header for a final reply frame. fc_fill_hdr() which is similar but allows specifying the f_ctl parameter. Add defines for F_CTL values FC_FCTL_REQ and FC_FCTL_RESP. These can be used for most request and response sequences. v2 of patch adds a line to copy the frame encapsulation info from the received frame. Signed-off-by:
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Joe Eykholt authored
To pave the way for eliminating exchanges from incoming requests, add simple inline fc_frame_sid() and fc_frame_did() functions which get the FC_IDs from the frame header. This can be almost as efficient as getting them from the sequence/exchange. Move ntohll, htonll, ntoh24 and hton24 to <scsi/fc_frame.h> since we need them there and that's included by <scsi/libfc.h> Signed-off-by:
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Joe Eykholt authored
The LOGO state hasn't been used in a while, except in a brief transition to DELETE state while holding the rport mutex. All port LOGO responses have been ignored as well as any timeout if we don't get a response. So this patch just removes LOGO state and simplifies the response handler. Signed-off-by:
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Joe Eykholt authored
Add module parameter create_vn2vn that behaves like the create parameter except that the new instance is created in FIP vn2vn mode. This can be replaced once we change create to allow modifying per-instance attributes before starting the instance. Signed-off-by:
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Joe Eykholt authored
In VN2VN mode, map_dest means to use the default VN2VN OUI. Change code that uses the default FCoE OUI to use the one set in the fcoe_ctlr struct. Signed-off-by:
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