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2012-07-16target: Remove unneeded double parenthesesAndy Grover
Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: replace the processing thread with a TMR work queueChristoph Hellwig
The last functionality of the target processing thread is offloading possibly long running task management requests from the submitter context. To keep TMR semantics the same we need a single threaded ordered queue, which can be provided by a per-device workqueue with the right flags. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove transport_generic_handle_cdb_mapChristoph Hellwig
Remove this command submission path which is not used by any in-tree driver. This also removes the now unused new_cmd_map fabtric method, which a few drivers implemented despite never calling transport_generic_handle_cdb_map. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: simply fabric driver queue full processingChristoph Hellwig
There is no need to schedule the delayed processing in a workqueue that offloads it to the target processing thread. Instead execute it directly from the workqueue. There will be a lot of future work in this area, which I'd likfe to defer for now as it is not nessecary for getting rid of the target processing thread. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove transport_generic_handle_dataChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16tcm_fc: Offload WRITE I/O backend submission to tpg workqueueChristoph Hellwig
Defer the write processing to the internal to be able to use target_execute_cmd. I'm not even entirely sure the calling code requires this due to the convoluted structure in libfc, but let's be safe for now. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Mark Rustad <mark.d.rustad@intel.com> Cc: Kiran Patil <Kiran.patil@intel.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16tcm_qla2xxx: Offload WRITE I/O backend submission to tcm_qla2xxx wqChristoph Hellwig
Defer the whole tcm_qla2xxx_handle_data call instead of just the error path to the qla2xxx-internal workqueue. Also remove the useless lock around the CMD_T_ABORTED check. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Roland Dreier <roland@purestorage.com> Cc: Giridhar Malavali <giridhar.malavali@qlogic.com> Cc: tcm-qla2xxx@qlogic.com Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16srpt: use target_execute_cmd for WRITEs in srpt_handle_rdma_compChristoph Hellwig
srpt_handle_rdma_comp is called from kthread context and thus can execute target_execute_cmd directly. srpt_abort_cmd sets the CMD_T_LUN_STOP flag directly, and thus the abuse of transport_generic_handle_data can be replaced with an opencoded variant of that code path. I'm still not happy about a fabric driver poking into target core internals like this, but let's defer the bigger architecture changes for now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16iscsit: use target_execute_cmd for WRITEsChristoph Hellwig
All three callers of transport_generic_handle_data are from user context and can use target_execute_cmd directly to handle the backend I/O submission of WRITE I/O. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: merge transport_generic_write_pending into transport_generic_new_cmdChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: call transport_check_aborted_status from target_execute_cmdChristoph Hellwig
When we call target_execute_cmd for write commands the command has been on the state list before an abort might have come in before target_execute_cmd. Call transport_check_aborted_status to deal with this case. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove transport_generic_process_writeChristoph Hellwig
Just call target_execute_cmd directly. Also, convert loopback, sbp, usb-gadget to use the newly exported target_execute_cmd(). Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: split transport_cmd_check_stopChristoph Hellwig
Inline the transport_off == 0 case into target_execute_cmd to simplify the function for the remaining cases. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16tcm_qla2xxx: Remove duplicate header file inclusionSachin Kamat
ctype.h and string.h header files were included more than once. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16Revert "target: Do not special-case loop and iscsi fabric module loads"Nicholas Bellinger
Existing lio_dump.py code expects this to be in place for /iscsi. Revert for now to avoid userspace breakage in lio-utils This reverts commit fd88a785f9ac5d6be437c528571ccd85cdf2d493. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move unmap to struct spc_opsChristoph Hellwig
Having all the unmap payload parsing in the backed is a bit ugly, but until more drivers support it and we can find a good interface for all of them that seems the way to go. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move write_same to struct spc_opsChristoph Hellwig
Add spc_ops->execute_write_same() caller for ->execute_cmd() setup, and update IBLOCK backends to use it. (nab: add export of spc_get_write_same_sectors symbol) (roland: Carry forward: Fix range calculation in WRITE SAME emulation when num blocks == 0) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move sync_cache to struct spc_opsChristoph Hellwig
Add spc_ops->execute_sync_cache() caller for ->execute_cmd() setup, and update IBLOCK + FILEIO backends to use it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: add struct spc_ops + initial ->execute_rw pointer usageChristoph Hellwig
Remove the execute_cmd method in struct se_subsystem_api, and always use the one directly in struct se_cmd. To make life simpler for SBC virtual backends a struct spc_ops that is passed to sbc_parse_cmd is added. For now it only contains an execute_rw member, but more will follow with the subsequent commits. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove dead SCF_ flagsChristoph Hellwig
Remove the dead SCF_SE_ALLOW_EOO and SCF_DELAYED_CMD_FROM_SAM_ATTR from se_cmd_flags_table. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target/iscsi: Remove dead code in lio_get_tpg_from_tpg_item()Roland Dreier
It's got no callers... Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target/iblock: Add parameter to specify read-only devicesAndy Grover
see https://bugzilla.redhat.com/show_bug.cgi?id=818855 Adds a parameter so read-only block devices may be registered as LIO backstores. Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: Do not special-case loop and iscsi fabric module loadsAndy Grover
These modules, along with other fabrics, should be loaded as-needed by the LIO userspace tools. Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move ref_cmd from the generic se_tmr_req into iscsi codeChristoph Hellwig
Also remove the unused ref_task_lun field in struct se_tmr_req. (nab: Add missing TASK_REASSIGN ref_lun vs. ref_cmd orig_fe_lun checks in iscsit_tmr_task_reassign) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove the execute listChristoph Hellwig
Since "target: Drop se_device TCQ queue_depth usage from I/O path" we always submit all commands (or back then, tasks) from __transport_execute_tasks. That means the the execute list has lots its purpose, as we can simply submit the commands that are restarted in transport_complete_task_attr directly while we walk the list. In fact doing so also solves a race in the way it currently walks to delayed_cmd_list as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target/pscsi: Only emulate REPORT_LUNS for passthroughNicholas Bellinger
This patch changes back the pSCSI backend to follow pre 3.6-queue code to passthrough SPC-3 persistent reservations + SPC-2 legacy reservation handling to the underlying LLD / physical hardware. For folks who really need this for their own SPC-3 emulation logic, avoid changing the functionality of this beyond what is exported for REPORT_LUNS for existing code, and to avoid problems with SPC-3 PR/ALUA as INQUIRY EVPD=0x83 emulation needs to be in place in order for this to work as expected with spc_parse_cdb() code.. Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: Move MAINTENANCE_[IN,OUT] from pscsi_parse_cdb -> spc_parse_cdbNicholas Bellinger
The MAINTENANCE_[IN,OUT] CDB parsing required for generic ALUA emulation needs to be in spc_parse_cdb() to function for virtual TYPE_DISK exports, instead of in backend pscsi_parse_cdb() code used only for passthrough ops. Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move transport_generic_prepare_cdb into pscsiChristoph Hellwig
The virtual drivers don't need to clear cdb fields they never look at, so move this code into the pscsi backend. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move code for CDB emulationChristoph Hellwig
Move the existing code in target_core_cdb.c into the files for the command sets that the emulations implement. (roland + nab: Squash patch: Fix range calculation in WRITE SAME emulation when num blocks == 0s) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: add a parse_cdb method to the backend driversChristoph Hellwig
Instead of trying to handle all SCSI command sets in one function (transport_generic_cmd_sequencer) call out to the backend driver to perform this functionality. For pSCSI a copy of the existing code is used, but for all virtual backends we can use a new parse_sbc_cdb helper is used to provide a simple SBC emulation. For now this setups means a fair amount of duplication between pSCSI and the SBC library, but patches later in this series will sort out that problem. (nab: Fix up build failure in target_core_pscsi.c) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: split parsing of SPC commands into a separate helperChristoph Hellwig
(nab: Add EXPORT_SYMBOL usage for spc_parse_cdb) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: split overflow and underflow checks into a helperChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: remove control CDB flagsChristoph Hellwig
We don't need three flags to classifiy the CDB as we can check for a NULL S/G list for a dataless command, and can infer from the absence of the data flag that we deal with a control CDB. Also remove the _SG_IO from the data CDB flag as all I/O is dont on S/G lists now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16target: move unrelated code out of transport_generic_cmd_sequencerChristoph Hellwig
Move all code not related to cdb parsing from transport_generic_cmd_sequencer into target_setup_cmd_from_cdb. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16USB: remove 8 bytes of padding from usb_host_interface on 64 bit buildsRichard Kennedy
Reorder elements in the usb_host_interface structure to remove 8 bytes of padding on 64 bit builds , and so shrink it's size to 40 bytes. usb_interface_descriptor is a odd size which leaves a gap that is not big enough to hold a pointer, so moving extralen into that gap removes the need for more padding. Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: option: add ZTE MF821DBjørn Mork
Sold by O2 (telefonica germany) under the name "LTE4G" Tested-by: Thomas Schäfer <tschaefer@t-online.de> Signed-off-by: Bjørn Mork <bjorn@mork.no> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: sierra: QMI mode MC7710 moved to qcserialBjørn Mork
The MC7710 in QMI mode does not support the vendor specific USB requests used by this driver. The most noticable effect of this is a 5 second delay as each serial port is probed, caused by the set_power_state command timing out: [ 17.434291] usbcore: registered new interface driver sierra [ 17.434383] USB Serial support registered for Sierra USB modem [ 17.434486] sierra 8-4:1.0: Sierra USB modem converter detected [ 22.432413] usb 8-4: Sierra USB modem converter now attached to ttyUSB0 [ 22.432563] sierra 8-4:1.2: Sierra USB modem converter detected [ 27.432410] usb 8-4: Sierra USB modem converter now attached to ttyUSB1 [ 27.432562] sierra 8-4:1.3: Sierra USB modem converter detected [ 32.432463] usb 8-4: Sierra USB modem converter now attached to ttyUSB2 The MC7710 provide the same Qualcomm serial interfaces as Gobi modules, and the qcserial driver has been extended to support the module instead of this driver. Cc: Anton Samokhvalov <pg83@yandex.ru> Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: qcserial: adding Sierra Wireless devicesBjørn Mork
The QMI mode of the Sierra Wireless MC7710 is close to a Gobi device, and also identified as one by the Windows drivers provided by Sony. The serial interfaces are the same as for any other Gobi module, but the USB interface layout is different: 0: DM/DIAG (also present in bootloader mode) 2: NMEA 3: AT-capable modem port 8: QMI/net 19: QMI/net (not always present) 20: QMI/net (not always present) Note in particular that the NMEA and AT ports are reversed compared to a Gobi 2k+ device, and that the DM port appears as a QDL port in bootloader mode using the same device ID. The Sony driver also document two new devices with standard Gobi 2k+ layout (1199:68a5, 1199:68a9) having a QDL mode (1199:68a4, 1199:68a8). Adding these as well. Lenovo Windows drivers document the USB interface layout for a few additional Sierra Wireless devices. Adding these while at it: - MC7770 (1199:901b) with standard Gobi 2k+ layout - MC7700 (0f3d:68a2) with the same layout as MC7710 - MC7750 (114f:68a2) with the same layout as MC7710 - EM7700 (1199:901c) with the same layout as MC7710 Cc: Anton Samokhvalov <pg83@yandex.ru> Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: qcserial: support generic Qualcomm serial portsBjørn Mork
No need to verify the interface layout when doing interface number based matching. We can safely trust the device ID table in this case. This allows the driver to support any USB interface layout for non-Gobi 1k/2k+ devices. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: qcserial: make probe more flexibleBjørn Mork
Preparing qcprobe support for more than just strict Gobi 1k or 2k+ devices. Many newer Qualcomm based devices provide the same serial ports, but using varying USB interface layouts. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: qcserial: centralize probe exit pathBjørn Mork
Creating a common exit path from qcprobe to make it easier to extend it. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: qcserial: consolidate usb_set_interface callsBjørn Mork
No need to replicate the same code all over the place. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: ehci-s5p: Add support for device treeVivek Gautam
This patch adds support to parse probe data for ehci driver for exynos using device tree Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: ohci-exynos: Add support for device treeVivek Gautam
This patch adds support to parse probe data for ohci driver for exynos using device tree. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: ehci-omap: fix compile failure(v1)Ming Lei
The omap_ehci_init() is introduced in the below commit: commit 1a49e2ac9651df7349867a5cf44e2c83de1046af(EHCI: centralize controller initialization) the local variable of 'pdev' inside omap_ehci_init() is used but not defined, so fix the compiling failure. Signed-off-by: Ming Lei <ming.lei@canonical.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16usb: host: tegra: pass correct pointer in ehci_setup()Laxman Dewangan
The ehci_setup() require the pointer of usb_hcd. Passing the correct pointer in place of ehci_hcd pointer. This is side effect of change: commit 1a49e2ac9651df7349867a5cf44e2c83de1046af Author: Alan Stern <stern@rowland.harvard.edu> EHCI: centralize controller initialization [Although I checked for this specifically, obviously I missed some of the calls. In addition to the mistake in ehci-tegra.c that Laxman fixed here, the same thing needs to be fixed in ehci-orion.c and ehci-xls.c. -- Alan Stern] Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: ehci-fsl: Update ifdef check to work on 64-bit ppcKumar Gala
We need to use CONFIG_FSL_SOC_BOOKE instead of CONFIG_PPC_85xx as CONFIG_PPC_85xx isn't defined when we build support for 64-bit embedded FSL PPC SoCs. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16target: Fix range calculation in WRITE SAME emulation when num blocks == 0Roland Dreier
When NUMBER OF LOGICAL BLOCKS is 0, WRITE SAME is supposed to write all the blocks from the specified LBA through the end of the device. However, dev->transport->get_blocks(dev) (perhaps confusingly) returns the last valid LBA rather than the number of blocks, so the correct number of blocks to write starting with lba is dev->transport->get_blocks(dev) - lba + 1 (nab: Backport roland's for-3.6 patch to for-3.5) Signed-off-by: Roland Dreier <roland@purestorage.com> Cc: Cc: <stable@vger.kernel.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-16USB: serial: keyspan: Removed unrequired parentheses.Ben Minerds
Changes to conform with checkpatch.sh script. - return is not a function, parentheses not required. Removed 1 checkpatch.sh error. Signed-off-by: Ben Minerds <puzzleduck@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16USB: serial: keyspan: Removed trailing whitespace.Ben Minerds
Changes to conform with checkpatch.sh script. - trailing whitespace. Removed 1 checkpatch.sh error. Signed-off-by: Ben Minerds <puzzleduck@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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