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path: root/drivers/scsi/qla2xxx/qla_dbg.c
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2012-09-24[SCSI] qla2xxx: Implementation of bidirectional.Saurav Kashyap
[jejb: merge fix for introduced warning] Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-24[SCSI] qla2xxx: Use bitmap to store loop_id's for fcports.Chad Dupuis
Store used fcport loop_id's in a bitmap so that as opposed to looping through all fcports to find the next free loop_id, new loop_id lookup can be just be done via bitops. [jejb: plus fix for incorrect LOOPID_MAP_SIZE from Andrew Vasquez] Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-14[SCSI] qla2xxx: Fix typo in qla2xxx filesMasanari Iida
Correct spelling typo within qla2xxx files. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-09-14[SCSI] qla2xxx: Add check in qla82xx_watchdog for failed hardware state.Chad Dupuis
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-22[SCSI] qla2xxx: Add LLD target-mode infrastructure for >= 24xx seriesNicholas Bellinger
Add LLD target mode for >= 24xx series HW. This code was originally based on external qla2x00t module based on 8.02.01-k4, and has been refactored to push the bulk of code into mainline qla2xxx.ko LLD -> qla_target.c. The implementation uses internal workqueues for I/O context submission into tcm_qla2xxx code, and includes the struct qla_tgt_func_tmpl API for external interaction to allow qla2xxx LDD to function without direct target-core dependencies: It also enables qla_target.c usage within existing qla2xxx LLD code. This includes: *) Addition of target mode specific members to existing data structures in qla_def.h and struct qla_hw_data->tgt_ops using qla_target.h:struct qla_tgt_func_tmpl *) Addition of struct qla_tgt_func_tmpl and direct calls into qla_target.c logic w/ qlt_* prefixed functions. *) Addition of qla_iocb.c:qla2x00_req_pkt() for ring processing, and qla2x00_issue_marker() for handling request/response queue processing for target mode operation *) Addition of various qla_tgt_mode_enabled() logic checks in qla24xx_nvram_config(), qla2x00_initialize_adapter(), qla2x00_rff_id(), qla2x00_abort_isp(), qla24xx_modify_vp_config(), and qla2x00_vp_abort_isp(). By default the new qlini_mode module parameter is setting initiator-mode to 'enabled' in order for 'modprobe qla2xxx' to continue to function as expected in initiator only mode. Enabling target-mode operation will currently require a: modprobe qla2xxx qlini_mode="disabled" in order to explictly disabled initiator mode and allow target-mode to be enabled via tcm_qla2xxx configfs fabric callers. (nab: Convert to qlini_mode='enabled' by default in qla_target.c) (joern: Remove loop_id from qla_tgt_make_local_sess() arguments + Remove unused s_id + fix s_id endianness bug + simplify qla_tgt_abort_work) (gerard: fix section __exit mismatch in qla_tgt_exit) (arun: Capture ATIO queue during firmware dump + Send SCR in target mode + Target mode review comments) (roland: Don't create duplicate target sessions to address tearing down ACLs with IO in flight + Add missing call to qlt_fc_port_deleted call during qla2x00_schedule_rport_del timeout) Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-22[SCSI] qla2xxx: Log link up and link down messages to track link flops.Chad Dupuis
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-22[SCSI] qla2xxx: Add ql_dbg_verbose logging level.Saurav Kashyap
Add an extra layer of logging granularity for messages that are necessary in some circumstances but may flood the kernel log buffer with too many messages otherwise. Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-22[SCSI] qla2xxx: Detect PEG errors.Giridhar Malavali
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10[SCSI] qla2xxx: Proper completion to scsi-ml for scsi status task_set_full ↵Giridhar Malavali
and busy. In case of firmmware detected under-run condition and scsi status of task_set_full or busy_condition, return that to the mid layer for proper error handling instead of DID_ERROR (which causes error handler activation and a full retry). Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Add ha->max_fibre_devices to keep track of the maximum ↵Chad Dupuis
number of targets. Add a field to the qla_hw_data struct to allow us to set the maximum number of fabric devices on a per adapter basis based on ISP type. [jejb: fix up missing rval = QLA_SUCCESS to prevent uninit var warning] Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Remove EDC sysfs interface.Joe Carnuccio
Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Add new message when a new loopid is assigned.Arun Easi
Signed-off-by: Arun Easi <arun.easi@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Use ql_log* #define's in ql_log() and ql_log_pci().Chad Dupuis
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Convert remaining printk's to ql_log format.Chad Dupuis
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Perform implicit logout during rport tear-down.Andrew Vasquez
During rport tear-down, make sure we do an implicit LOGO of the fcport in our firmware to try to clear any residual commands associated with that fcport. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Handle failure cases during fabric_loginChad Dupuis
Make sure that all calls to ha->isp_ops->fabric_login() check the return value for failure. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Consolidation of SRB processing.Giridhar Malavali
Rework the structures related to SRB processing to minimize the memory allocations per I/O and manage resources associated with and completions from common routines. Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Enhancements to support ISP83xx.Giridhar Malavali
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com> Signed-off-by: Nigel Kirkland <nigel.kirkland@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-19[SCSI] qla2xxx: Enhanced the dump routines to capture multiple request and ↵Giridhar Malavali
response queues. Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-02-18[SCSI] qla2xxx: Add an "is reset active" helper.Andrew Vasquez
Many locations within the driver would use an inconsistent set of checks to determine ISP-reset state. Consolidate the checks into this inline-helper. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-12-15[SCSI] qla2xxx: Consolidated IOCB processing routines.Giridhar Malavali
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-12-15[SCSI] qla2xxx: Fix to include FCE data as part of dump.Giridhar Malavali
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-12-15[SCSI] qla2xxx: Update to dynamic logging.Chad Dupuis
This patch contains minor fixes to our new logging infrastructure: - Remove extranous messages. - Re-add 'nexus' and 'hdl' information. - Adjusted the message ids to fill up the holes. - Display FCP_CMND priority on update. - Log only mail box error conditions. - Do not print "Firmware ready **** FAILED ****" if cable is unplugged. - Drop noisy 'fw_state...curr time...' message. - Correct nexus display during abort. - Add a special case error-logging set to '1'. - Catagorize I/O exception display handling. - Correct the bsg msg code printing. - Dont use dynamic logging after host is removed. Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-12-15[SCSI] qla2xxx: Use less stack to emit logging messages.Joe Perches
Return early when logging level too low. Use normal kernel codeing style for function braces. Add const where appropriate to logging functions. Remove now unused #define QL_DBG_BUF_LEN. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-12-12[SCSI] qla2xxx: Disable generating pause frames when firmware hang detected ↵Giridhar Malavali
for ISP82xx. Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-12-12[SCSI] qla2xxx: Encapsulate prematurely completing mailbox commands during ↵Chad Dupuis
ISP82xx firmware hang. Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29[SCSI] qla2xxx: Implemeted beacon on/off for ISP82XX.Saurav Kashyap
[jejb: fix up checkpatch.pl errors] Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-29[SCSI] qla2xxx: Add support for ISP82xx to capture dump (minidump) on failure.Giridhar Malavali
Minidump allows us to catpure a snapshot of the firmware/hardware states at the time of failure for further analysis. [jejb: added missing #include <linux/vmalloc.h> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> ] Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-08-27[SCSI] qla2xxx: T10 DIF - Fix incorrect error reporting.Arun Easi
This fix: - Disables app tag peeking; correct tag check will be added when the SCSI API is available. - Always derive ref_tag from scsi_get_lba() - Removes incorrect swap of FCP_LUN in FCP_CMND - Moves app-tag error check before ref-tag check. The reason being, currently there is no interface in SCSI to retrieve the app-tag for protection I/Os, so driver puts zero for app-tag in the firmware interface, but requests not to validate it, but when a ref-tag error is detected by firmware, it would put expected/actual tags for all the protection tags (guard/app/ref). As driver checks for app tag error first, a ref-tag error is incorrectly flagged as app-tag error. - Convert HBA specific checks to capability based. Signed-off-by: Arun Easi <arun.easi@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-07-27[SCSI] qla2xxx: Cleanup of previous infrastructure.Saurav Kashyap
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-07-27[SCSI] qla2xxx: Code changes to support new dynamic logging infrastructure.Saurav Kashyap
The code is changed to support the new dynamic logging infrastructure. Following are the levels added. Default is 0 - no logging. 0x40000000 - Module Init & Probe. 0x20000000 - Mailbox Cmnds. 0x10000000 - Device Discovery. 0x08000000 - IO tracing. 0x04000000 - DPC Thread. 0x02000000 - Async events. 0x01000000 - Timer routines. 0x00800000 - User space. 0x00400000 - Task Management. 0x00200000 - AER/EEH. 0x00100000 - Multi Q. 0x00080000 - P3P Specific. 0x00040000 - Virtual Port. 0x00020000 - Buffer Dump. 0x00010000 - Misc. 0x7fffffff - For enabling all logs, can be too many logs. Setting ql2xextended_error_logging module parameter to any of the above value, will enable the debug for that particular level. Do LOGICAL OR of the value to enable more than one level. Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-07-27[SCSI] qla2xxx: Basic infrastructure for dynamic logging.Saurav Kashyap
This patch adds the dynamic logging framework to the qla2xxx driver. The user will be able to change the logging levels on the fly i.e. without load/unload of the driver. This also enables logging to be enabled for a particular section of the driver such as initialization, device discovery etc. Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2011-05-01[SCSI] qla2xxx: Update copyright banner.Andrew Vasquez
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Madhuranath Iyengar <Madhu.Iyengar@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-07-28[SCSI] qla2xxx: Update copyright banner.Giridhar Malavali
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-05-16[SCSI] qla2xxx: T10 DIF support added.Arun Easi
Signed-off-by: Duane Grigsby <duane.grigsby@qlogic.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-05-01[SCSI] qla2xxx: Add ISP82XX support.Giridhar Malavali
Enhanced the driver to support new FCoE host bus adapter. Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04[SCSI] qla2xxx: Add firmware-dump kobject uevent notification.Andrew Vasquez
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-06-21qla2xxx: Correct (again) overflow during dump-processing on large-memory ↵Andrew Vasquez
ISP23xx parts. Commit 7b867cf76fbcc8d77867cbec6f509f71dce8a98f ([SCSI] qla2xxx: Refactor qla data structures) inadvertently reverted e792121ec85672c1fa48f79d13986a3f4f56c590 ([SCSI] qla2xxx: Correct overflow during dump-processing on large-memory ISP23xx parts.). Cc: stable@kernel.org Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-06-08[SCSI] qla2xxx: Query supported RISC registers bits in determining a ↵Andrew Vasquez
paused-state. ISP24xx and above must query the host-status register, not HCCR. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-05-20[SCSI] qla2xxx: Add QoS support.Anirban Chakraborty
Set the number of request queues to the module paramater ql2xmaxqueues. Each vport gets a request queue. The QoS value set to the request queues determines priority control for queued IOs. If QoS value is not specified, the vports use the default queue 0. Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-01-07[SCSI] qla2xxx: Add ISP81XX support.Andrew Vasquez
Codes to support new FCoE boards. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-01-07[SCSI] qla2xxx: Correct MQ-chain information retrieval during a firmware dump.Andrew Vasquez
Original code would not read request/response queue pointers. Also, collapse code into a helper qla25xx_copy_mq() function in preparation for newer ISP parts. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-01-07[SCSI] qla2xxx: Collapse EFT/FCE copy procedures during a firmware dump.Andrew Vasquez
In preparation for new ISP types with varying dump procedures. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29[SCSI] qla2xxx: add support for multi-queue adapterAnirban Chakraborty
Following changes have been made. 1. qla_hw_data structure holds an array for request queue pointers, and an array for response queue pointers. 2. The base request and response queues are created by default. 3. Additional request and response queues are created at the time of vport creation. If queue resources are exhausted during vport creation, newly created vports use the default queue. 4. Requests are sent to the request queue that the vport was assigned in the beginning. 5. Responses are completed on the response queue with which the request queue is associated with. [fixup memcpy argument reversal spotted by davej@redhat.com] Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29[SCSI] qla2xxx: Refactor qla data structuresAnirban Chakraborty
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: Anirban Chakraborty <anirban.chakraborty@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-07-26[SCSI] qla2xxx: Correct overflow during dump-processing on large-memory ↵Andrew Vasquez
ISP23xx parts. Total ram words can exceed a 16bit value on large-memory boards. Safely extend to a 32bit width. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-27[SCSI] qla2xxx: Collapse RISC-RAM retrieval code during a firmware-dump.Andrew Vasquez
Use the more efficient read-DMA'ble-buffer mailbox commands rather than reading a single word/dword at a time. We also remove a bulk of the duplicate mailbox command-handling codes in favor of more generic read-memory() routines (qla2xxx_dump_ram() and qla24xx_dump_ram()). Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-07[SCSI] qla2xxx: Cruft cleanup of functions and structures.Andrew Vasquez
Strip unused (DEBUG-ONLY) enabled functions, inlines, useless wrappers, and unused DPC flags from the code. Another step in the migration towards a cleaner (less-crusty) driver. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-07[SCSI] qla2xxx: Update copyright banner.Andrew Vasquez
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] qla2xxx: Add Fibre Channel Event (FCE) tracing support.Andrew Vasquez
FCE support enables the firmware to record FC extended link services and basic link services frames which have been transmitted and received by the ISP. This allows for a limited view of the FC traffic through the ISP without using a FC analyzer. This can be useful in situations where a physical connection to the FC bus is not possible. The driver exports this information in two ways -- first, via a debugfs node exported for all supported ISPs under: <debugfs_mount_point>/qla2xxx/qla2xxx_<host_no>/fce where a read of the 'fce' file will provide a snapshot of the firmware's FCE buffer; and finally, the FCE buffer will be extracted during a firmware-dump scenario. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>