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* scsi: qla4xxx: shut up warning for rd_reg_indirectArnd Bergmann2016-02-241-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The qla4_83xx_rd_reg_indirect() function can fail when it is unable to read a register, but not all callers check its return value before using the register data, and gcc correctly warns about this: qla4xxx/ql4_83xx.c: In function 'qla4_83xx_process_reset_template': qla4xxx/ql4_83xx.c:1073:36: warning: 'value' may be used uninitialized in this function ha->reset_tmplt.array[index++] = value; ^ qla4xxx/ql4_83xx.c:1050:11: note: 'value' was declared here uint32_t value; ^ qla4xxx/ql4_83xx.c:902:8: warning: 'value' may be used uninitialized in this function value &= p_rmw_hdr->test_mask; ^ qla4xxx/ql4_83xx.c:895:11: note: 'value' was declared here uint32_t value; ^ In file included from ../include/linux/io.h:25:0, from ../include/linux/pci.h:31, from ../drivers/scsi/qla4xxx/ql4_def.h:16, from ../drivers/scsi/qla4xxx/ql4_83xx.c:10: asm/io.h:101:2: warning: 'value' may be used uninitialized in this function asm volatile("str %1, %0" ^ qla4xxx/ql4_83xx.c:874:11: note: 'value' was declared here uint32_t value; ^ Unfortunately, I don't see any helpful way to add proper error handling for this case, and the failure scenario for rd_reg seems rather obscure, so this bails out and makes the rd_reg accessor set the result to 0xffffffff so we at least get a predictable value. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds2015-11-141-8/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull final round of SCSI updates from James Bottomley: "Sorry for the delay in this patch which was mostly caused by getting the merger of the mpt2/mpt3sas driver, which was seen as an essential item of maintenance work to do before the drivers diverge too much. Unfortunately, this caused a compile failure (detected by linux-next), which then had to be fixed up and incubated. In addition to the mpt2/3sas rework, there are updates from pm80xx, lpfc, bnx2fc, hpsa, ipr, aacraid, megaraid_sas, storvsc and ufs plus an assortment of changes including some year 2038 issues, a fix for a remove before detach issue in some drivers and a couple of other minor issues" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (141 commits) mpt3sas: fix inline markers on non inline function declarations sd: Clear PS bit before Mode Select. ibmvscsi: set max_lun to 32 ibmvscsi: display default value for max_id, max_lun and max_channel. mptfusion: don't allow negative bytes in kbuf_alloc_2_sgl() scsi: pmcraid: replace struct timeval with ktime_get_real_seconds() mvumi: 64bit value for seconds_since1970 be2iscsi: Fix bogus WARN_ON length check scsi_scan: don't dump trace when scsi_prep_async_scan() is called twice mpt3sas: Bump mpt3sas driver version to 09.102.00.00 mpt3sas: Single driver module which supports both SAS 2.0 & SAS 3.0 HBAs mpt2sas, mpt3sas: Update the driver versions mpt3sas: setpci reset kernel oops fix mpt3sas: Added OEM Gen2 PnP ID branding names mpt3sas: Refcount fw_events and fix unsafe list usage mpt3sas: Refcount sas_device objects and fix unsafe list usage mpt3sas: sysfs attribute to report Backup Rail Monitor Status mpt3sas: Ported WarpDrive product SSS6200 support mpt3sas: fix for driver fails EEH, recovery from injected pci bus error mpt3sas: Manage MSI-X vectors according to HBA device type ...
| * scsi: use host wide tags by defaultChristoph Hellwig2015-11-101-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the !blk-mq path to the same defaults as the blk-mq I/O path by always enabling block tagging, and always using host wide tags. We've had blk-mq available for a few releases so bugs with this mode should have been ironed out, and this ensures we get better coverage of over tagging setup over different configs. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* | move io-64-nonatomic*.h out of asm-genericChristoph Hellwig2015-10-151-1/+1
|/ | | | | | | | | | These are not implementations of default architecture code but helpers for drivers. Move them to the place they belong to. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Darren Hart <dvhart@linux.intel.com> Acked-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2015-06-251-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: 1) Add TX fast path in mac80211, from Johannes Berg. 2) Add TSO/GRO support to ibmveth, from Thomas Falcon 3) Move away from cached routes in ipv6, just like ipv4, from Martin KaFai Lau. 4) Lots of new rhashtable tests, from Thomas Graf. 5) Run ingress qdisc lockless, from Alexei Starovoitov. 6) Allow servers to fetch TCP packet headers for SYN packets of new connections, for fingerprinting. From Eric Dumazet. 7) Add mode parameter to pktgen, for testing receive. From Alexei Starovoitov. 8) Cache access optimizations via simplifications of build_skb(), from Alexander Duyck. 9) Move page frag allocator under mm/, also from Alexander. 10) Add xmit_more support to hv_netvsc, from KY Srinivasan. 11) Add a counter guard in case we try to perform endless reclassify loops in the packet scheduler. 12) Extern flow dissector to be programmable and use it in new "Flower" classifier. From Jiri Pirko. 13) AF_PACKET fanout rollover fixes, performance improvements, and new statistics. From Willem de Bruijn. 14) Add netdev driver for GENEVE tunnels, from John W Linville. 15) Add ingress netfilter hooks and filtering, from Pablo Neira Ayuso. 16) Fix handling of epoll edge triggers in TCP, from Eric Dumazet. 17) Add an ECN retry fallback for the initial TCP handshake, from Daniel Borkmann. 18) Add tail call support to BPF, from Alexei Starovoitov. 19) Add several pktgen helper scripts, from Jesper Dangaard Brouer. 20) Add zerocopy support to AF_UNIX, from Hannes Frederic Sowa. 21) Favor even port numbers for allocation to connect() requests, and odd port numbers for bind(0), in an effort to help avoid ip_local_port_range exhaustion. From Eric Dumazet. 22) Add Cavium ThunderX driver, from Sunil Goutham. 23) Allow bpf programs to access skb_iif and dev->ifindex SKB metadata, from Alexei Starovoitov. 24) Add support for T6 chips in cxgb4vf driver, from Hariprasad Shenai. 25) Double TCP Small Queues default to 256K to accomodate situations like the XEN driver and wireless aggregation. From Wei Liu. 26) Add more entropy inputs to flow dissector, from Tom Herbert. 27) Add CDG congestion control algorithm to TCP, from Kenneth Klette Jonassen. 28) Convert ipset over to RCU locking, from Jozsef Kadlecsik. 29) Track and act upon link status of ipv4 route nexthops, from Andy Gospodarek. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1670 commits) bridge: vlan: flush the dynamically learned entries on port vlan delete bridge: multicast: add a comment to br_port_state_selection about blocking state net: inet_diag: export IPV6_V6ONLY sockopt stmmac: troubleshoot unexpected bits in des0 & des1 net: ipv4 sysctl option to ignore routes when nexthop link is down net: track link-status of ipv4 nexthops net: switchdev: ignore unsupported bridge flags net: Cavium: Fix MAC address setting in shutdown state drivers: net: xgene: fix for ACPI support without ACPI ip: report the original address of ICMP messages net/mlx5e: Prefetch skb data on RX net/mlx5e: Pop cq outside mlx5e_get_cqe net/mlx5e: Remove mlx5e_cq.sqrq back-pointer net/mlx5e: Remove extra spaces net/mlx5e: Avoid TX CQE generation if more xmit packets expected net/mlx5e: Avoid redundant dev_kfree_skb() upon NOP completion net/mlx5e: Remove re-assignment of wq type in mlx5e_enable_rq() net/mlx5e: Use skb_shinfo(skb)->gso_segs rather than counting them net/mlx5e: Static mapping of netdev priv resources to/from netdev TX queues net/mlx4_en: Use HW counters for rx/tx bytes/packets in PF device ...
| * qla4xxx: add a missing includeEric Dumazet2015-05-271-0/+1
| | | | | | | | | | | | | | | | | | | | vmalloc.h used to be included from include/net/inet_hashtables.h but it is no longer the case. Fixes: 095dc8e0c368 ("tcp: fix/cleanup inet_ehash_locks_alloc()") Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Eric Dumazet <edumzet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge branch 'for-linus' of ↵Linus Torvalds2015-06-232-2/+2
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "As usual, mostly comment, kerneldoc and printk() fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: lpfc: Grammar s/an negative/a negative/ ARM: lib/lib1funcs.S: fix typo s/substractions/subtractions/ cx25821: cx25821-medusa-reg.h: fix 0x0x prefix lib: crc-itu-t.[ch] fix 0x0x prefix in integer constants rapidio: Fix kerneldoc and comment qla4xxx: Fix printk() in qla4_83xx_read_reset_template() and qla4_83xx_pre_loopback_config() treewide: Kconfig: fix wording / spelling usb/serial: fix grammar in Kconfig help text for FTDI_SIO megaraid_sas: fix kerneldoc netfilter: ebtables: fix comment grammar drm/radeon: fix comment isdn: fix grammar in comment ARM: KVM: fix comment
| * qla4xxx: Fix printk() in qla4_83xx_read_reset_template() and ↵Masanari Iida2015-05-262-2/+2
| | | | | | | | | | | | | | | | | | | | qla4_83xx_pre_loopback_config() This patch fix spelling typo in printk within drivers/qla4xxx. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | scsi: drop reason argument from ->change_queue_depthChristoph Hellwig2014-11-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | Drop the now unused reason argument from the ->change_queue_depth method. Also add a return value to scsi_adjust_queue_depth, and rename it to scsi_change_queue_depth now that it can be used as the default ->change_queue_depth implementation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de>
* | scsi: avoid ->change_queue_depth indirection for queue full trackingChristoph Hellwig2014-11-241-12/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All drivers use the implementation for ramping the queue up and down, so instead of overloading the change_queue_depth method call the implementation diretly if the driver opts into it by setting the track_queue_depth flag in the host template. Note that a few drivers validated the new queue depth in their change_queue_depth method, but as we never go over the queue depth set during slave_configure or the sysfs file this isn't nessecary and can safely be removed. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Venkatesh Srinivas <venkateshs@google.com>
* | scsi: don't force tagged_supported in driversChristoph Hellwig2014-11-121-9/+0
| | | | | | | | | | | | | | | | | | | | Now that we also get proper values in cmd->request->tag for untagged commands, there is no need to force tagged_supported to on in drivers that need host-wide tags. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de>
* | scsi: don't set tagging state from scsi_adjust_queue_depthChristoph Hellwig2014-11-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the tagged argument from scsi_adjust_queue_depth, and just let it handle the queue depth. For most drivers those two are fairly separate, given that most modern drivers don't care about the SCSI "tagged" status of a command at all, and many old drivers allow queuing of multiple untagged commands in the driver. Instead we start out with the ->simple_tags flag set before calling ->slave_configure, which is how all drivers actually looking at ->simple_tags except for one worke anyway. The one other case looks broken, but I've kept the behavior as-is for now. Except for that we only change ->simple_tags from the ->change_queue_type, and when rejecting a tag message in a single driver, so keeping this churn out of scsi_adjust_queue_depth is a clear win. Now that the usage of scsi_adjust_queue_depth is more obvious we can also remove all the trivial instances in ->slave_alloc or ->slave_configure that just set it to the cmd_per_lun default. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
* | scsi: always assign block layer tags if enabledChristoph Hellwig2014-11-121-8/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Allow a driver to ask for block layer tags by setting .use_blk_tags in the host template, in which case it will always see a valid value in request->tag, similar to the behavior when using blk-mq. This means even SCSI "untagged" commands will now have a tag, which is especially useful when using a host-wide tag map. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de>
* | scsi: remove abuses of scsi_populate_tagChristoph Hellwig2014-11-121-10/+0
|/ | | | | | | | | | | | | Unless we want to build a SPI tag message we should just check SCMD_TAGGED instead of reverse engineering a tag type through the use of scsi_populate_tag_msg. Also rename the function to spi_populate_tag_msg, make it behave like the other spi message helpers, and move it to the spi transport class. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de>
* qla4xxx: fix get_host_stats error propagationMike Christie2014-08-011-0/+2
| | | | | | | | | | qla4xxx was not always returning -EXYZ error codes when qla4xxx_get_host_stats failed. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: check the return value of dma_alloc_coherent()Maurizio Lombardi2014-07-301-0/+6
| | | | | | | | | the qla4xxx_alloc_fw_dump() calls dma_alloc_coherent() but does not check its return value. Signed-off-by: Maurizio Lombardi <mlombard@redhat.com> Acked-By: Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* scsi: qla4xxx: ql4_mbx.c: Cleaning up missing null-terminate in conjunction ↵Rickard Strandqvist2014-07-301-7/+7
| | | | | | | | | | | | with strncpy Replacing strncpy with strlcpy to avoid strings that lacks null terminate. And in some cases modified to copy one character less than the overall length, as the entire area is already zeroed. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Acked-By: Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* scsi: qla4xxx: ql4_os.c: Cleaning up missing null-terminate in conjunction ↵Rickard Strandqvist2014-07-301-7/+7
| | | | | | | | | | with strncpy Replacing strncpy with strlcpy to avoid strings that lacks null terminate. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Acked-By: Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Use pci_enable_msix_exact() instead of pci_enable_msix()Alexander Gordeev2014-07-301-1/+1
| | | | | | | | | | | | | As result of deprecation of MSI-X/MSI enablement functions pci_enable_msix() and pci_enable_msi_block() all drivers using these two interfaces need to be updated to use the new pci_enable_msi_range() or pci_enable_msi_exact() and pci_enable_msix_range() or pci_enable_msix_exact() interfaces. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Acked-By: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* scsi: use 64-bit LUNsHannes Reinecke2014-07-175-27/+27
| | | | | | | | | | | | | The SCSI standard defines 64-bit values for LUNs, and large arrays employing large or hierarchical LUN numbers become more and more common. So update the linux SCSI stack to use 64-bit LUN numbers. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Ewan Milne <emilne@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Use kmemdup instead of kmalloc + memcpyBenoit Taine2014-05-281-4/+3
| | | | | | | | | This issue was reported by coccicheck using the semantic patch at scripts/coccinelle/api/memdup.cocci Signed-off-by: Benoit Taine <benoit.taine@lip6.fr> Acked-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Update driver version to 5.04.00-k6Vikas Chaudhary2014-05-191-1/+1
| | | | | | Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Fix smatch warning in func qla4xxx_conn_get_paramAdheer Chandravanshi2014-05-191-4/+0
| | | | | | Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Fix smatch warning in func qla4xxx_get_ep_paramAdheer Chandravanshi2014-05-191-3/+3
| | | | | | | | | Fix following smatch warning:- drivers/scsi/qla4xxx/ql4_os.c:1752 qla4xxx_get_ep_param() warn: variable dereferenced before check 'qla_ep' (see line 1745) Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Fix memory leak for ha->saved_acbNilesh Javali2014-05-191-2/+4
| | | | | | Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Export sysfs DDBs from DPC handlerNilesh Javali2014-05-193-6/+11
| | | | | | | | | | | | | | | Issue: modprobe qla4xxx is killed by systemd due to timeout. Solution: The exporting of sysfs DDBs from qla4xxx_probe_adapter added delay of approximately 15s due to which system-udevd killed the modprobe of the driver. Added fix to export the sysfs DDBs from the DPC handler. Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Disable INTx interrupt for ISP82XXTej Parkash2014-05-191-7/+5
| | | | | | | Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Update driver version to 5.04.00-k5Vikas Chaudhary2014-05-191-1/+1
| | | | | | Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Fix memory leak in func qla4_84xx_config_acb()Vikas Chaudhary2014-05-191-1/+1
| | | | | | | | | Use correct goto statement to free dma memory in case of failure in function qla4_84xx_config_acb() Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Initialize hardware queue for ISP40XXVikas Chaudhary2014-05-191-0/+2
| | | | | | | | | | | | | | | | Issue: System crash while target discovery for ISP40XX Root cause: Function qla4xxx_init_rings() is not called for ISP40XX Fix: Call function qla4xxx_init_rings() for ISP40XX from qla4xxx_start_firmware(). Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Check for correct return statusVikas Chaudhary2014-05-191-1/+1
| | | | | | | | | Check for correct return status in function - qla4_8xxx_minidump_pex_dma_read Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: qla4xxx: Move qla4_8xxx_ms_mem_write_128b to ql4_nx.cVikas Chaudhary2014-05-192-106/+106
| | | | | | Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Added PEX DMA Support for ISP8022 AdapterTej Parkash2014-05-193-33/+28
| | | | | | | Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Added new opcodes for 84XX Minidump templateTej Parkash2014-05-193-0/+382
| | | | | | | | | | Updated driver with new opcode (RDDFE, RDMDIO and POLLWR) which are added with latest firmware minidump template Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Add support of 0xFF capture mask for minidumpTej Parkash2014-05-193-3/+33
| | | | | | | Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Change default capture to firmware defined capture maskTej Parkash2014-05-191-2/+2
| | | | | | | Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* qla4xxx: Do not wait for IO completion, after issuing stop_firmwareTej Parkash2014-05-191-3/+0
| | | | | | | | | | | | | | Problem: iSCSI stop_firmware mailbox command is not completing outstanding IO. Solution: Do not wait for IO completion after issuing stop_firmware mailbox command Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
* [SCSI] libiscsi: Reduce locking contention in fast pathShlomo Pongratz2014-03-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the session lock with two locks, a forward lock and a backwards lock named frwd_lock and back_lock respectively. The forward lock protects resources that change while sending a request to the target, such as cmdsn, queued_cmdsn, and allocating task from the commands' pool with kfifo_out. The backward lock protects resources that change while processing a response or in error path, such as cmdsn_exp, cmdsn_max, and returning tasks to the commands' pool with kfifo_in. Under a steady state fast-path situation, that is when one or more processes/threads submit IO to an iscsi device and a single kernel upcall (e.g softirq) is dealing with processing of responses without errors, this patch eliminates the contention between the queuecommand()/request response/scsi_done() flows associated with iscsi sessions. Between the forward and the backward locks exists a strict locking hierarchy. The mutual exclusion zone protected by the forward lock can enclose the mutual exclusion zone protected by the backward lock but not vice versa. For example, in iscsi_conn_teardown or in iscsi_xmit_data when there is a failure and __iscsi_put_task is called, the backward lock is taken while the forward lock is still taken. On the other hand, if in the RX path a nop is to be sent, for example in iscsi_handle_reject or __iscsi_complete_pdu than the forward lock is released and the backward lock is taken for the duration of iscsi_send_nopout, later the backward lock is released and the forward lock is retaken. libiscsi_tcp uses two kernel fifos the r2t pool and the r2t queue. The insertion and deletion from these queues didn't corespond to the assumption taken by the new forward/backwards session locking paradigm. That is, in iscsi_tcp_clenup_task which belongs to the RX (backwards) path, r2t is taken out from r2t queue and inserted to the r2t pool. In iscsi_tcp_get_curr_r2t which belong to the TX (forward) path, r2t is also inserted to the r2t pool and another r2t is pulled from r2t queue. Only in iscsi_tcp_r2t_rsp which is called in the RX path but can requeue to the TX path, r2t is taken from the r2t pool and inserted to the r2t queue. In order to cope with this situation, two spin locks were added, pool2queue and queue2pool. The former protects extracting from the r2t pool and inserting to the r2t queue, and the later protects the extracing from the r2t queue and inserting to the r2t pool. Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> [minor fix up to apply cleanly and compile fix] Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] qla4xxx: Update driver version to 5.04.00-k4Vikas Chaudhary2014-03-151-1/+1
| | | | | Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] qla4xxx: Fix sparse warningsVikas Chaudhary2014-03-151-2/+4
| | | | | | | | | | Fix following sparse warnings:- drivers/scsi/qla4xxx/ql4_os.c:2109:33: warning: cast truncates bits from constant value (ffff7fff becomes 7fff) drivers/scsi/qla4xxx/ql4_os.c:2306:33: warning: cast truncates bits from constant value (ffff7fff becomes 7fff) 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>
* [SCSI] qla4xxx: Handle IPv6 AEN notificationsNilesh Javali2014-03-152-3/+33
| | | | | | | Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com> 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>
* [SCSI] qla4xxx: Update print statements in func qla4xxx_do_dpc()Vikas Chaudhary2014-03-151-3/+3
| | | | | | 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>
* [SCSI] qla4xxx: Update print statements in func qla4xxx_eh_abort()Vikas Chaudhary2014-03-151-3/+4
| | | | | | 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>
* [SCSI] qla4xxx: Update print statements in qla4xxx_mailbox_command()Vikas Chaudhary2014-03-151-8/+8
| | | | | | 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>
* [SCSI] qla4xxx: Updated print for device login, logout pathVikas Chaudhary2014-03-151-16/+43
| | | | | | 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>
* [SCSI] qla4xxx: Remove unused code from qla4xxx_set_ifcb()Vikas Chaudhary2014-03-151-1/+0
| | | | | | | | Removing unused code as FW does not need any value in mbox-5. 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>
* [SCSI] qla4xxx: Fix failure of mbox 0x31Vikas Chaudhary2014-03-151-8/+48
| | | | | | | | | | | | | Issue: While unloading driver MBOX 0x31 fail as DDB logout (MBOX 0x56) operation is not completed. Fix: Wait for DDB Logout completion before MBOX 0x31 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>
* [SCSI] qla4xxx: Reduce rom-lock contention during reset recovery.Vikas Chaudhary2014-03-151-21/+12
| | | | | | | | | | | | | | | | | | | | | | | | Issue: Driver holds rom-lock for too long during reset recovery. During adapter reset testing, it was found that the driver holds the rom-lock for too long, because of which other drivers fail to acquire the rom-lock, leading to reset failures. The primary cause is, in the bootstrap code, while holding the rom-lock, the driver checks if the peg is halted, causing a 2 second contention. Fix: When a reset recovery starts, the driver deduces the cause, and sets appropriate flags in watchdog & recover_adapter routines. This flag should be used to determine if bootstrap is invoked from probe or reset context, reducing the rom-lock footprint of the drivers. 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>
* [SCSI] qla4xxx: Driver not able to collect minidump for ISP84xxTej Parkash2014-03-152-1/+8
| | | | | | | | | | | | | | | | Issue: minidump data collection fails as driver reports data mismatch Fix: When the driver encounters a new entry type that it cannot process, it should just skip the entry and adjust the total buffer size by subtracting the skipped bytes from it. This is to ensure that there is no data mismatch because of the new entries. Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> 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>
* [SCSI] qla4xxx: Fix pending IO completion in reset path before initiating ↵Tej Parkash2014-03-152-5/+13
| | | | | | | | | | | | | | | | | | | | chip reset Issue: Pending IO wait does not complete after triggering Graceful reset, causing ack timeout and call traces. Fix: 1. Reducing the IO command wait timeout before triggering reset, as logically also timeout should be less than reset timeout (10sec). 2. Moving the abort IO after chip reset, because only after chip reset, driver owns the IO otherwise it is with firmware and can still revert back with response. Signed-off-by: Tej Parkash <tej.parkash@qlogic.com> 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>
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