- 14 Sep, 2016 25 commits
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Don Brace authored
Currently we are checking for external status before we are determining if a device is an external device. Reviewed-by:
Scott Benesh <scott.benest@microsemi.com> Reviewed-by:
Scott Teel <scott.teel@microsemi.com> Reviewed-by:
Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by:
Don Brace <don.brace@microsemi.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Finn Thain authored
Large PIO transfers are broken up into chunks to try to avoid disabling local IRQs for long periods. But IRQs are still disabled for too long and this causes SCC FIFO overruns during serial port transfers. This patch reduces the PIO chunk size to reduce interrupt latency to something on the order of milliseconds, at the expense of additional CPU overhead from extra iterations of the NCR5380_main() loop. That CPU overhead is a problem for slow machines (e.g. mac_scsi on 25 MHz 68030) but these machines generally use PDMA not PIO. This patch doesn't make the overhead any worse on my Mac LC III (because it only gets about 510 accesses per ms). This patch decreases disk performance by a fraction of one percent for dmx3191d on my 333 MHz PowerPC 750. Other affected hardware (such as g_NCR5380 on x86) was not tested but 5380 ISA cards generally use PDMA and not PIO. [mkp: fix whitespace] Signed-off-by:
Finn Thain <fthain@telegraphics.com.au> Reviewed-by:
Laurence Oberman <loberman@redhat.com> Signed-off-by:
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Daniel Wagner authored
There is only one waiter for the completion, therefore there is no need to use complete_all(). Let's make that clear by using complete() instead of complete_all(). The usage pattern of the completion is: waiter context waker context virtscsi_tmf() DECLARE_COMPLETION_ONSTACK() virtscsi_kick_cmd() wait_for_completion() virtscsi_complete_free() complete() Signed-off-by:Daniel Wagner <daniel.wagner@bmw-carit.de> Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Daniel Wagner authored
There is only one waiter for the completion, therefore there is no need to use complete_all(). Let's make that clear by using complete() instead of complete_all(). The usage pattern of the completion is: waiter context waker context sym_eh_handler() struct completion eh_done init_completion(eh_done) pci_channel_offline() wait_for_completion_timeout(eh_done) sym2_io_resume() complete(eh_done) Signed-off-by: -
Daniel Wagner authored
The (re)initializing of the completion object should be done before we trigger the transfer. Doing this after triggering the hardware opens up a race window. Without the timeout we would problaly even deadlock. Use also reinit_completion because we initalize the whole data structure in csio_scscim_init(). There is only one waiter for the completion, therefore there is no need to use complete_all(). Let's make that clear by using complete() instead of complete_all(). The usage pattern of the completion is: waiter context waker context csio_eh_abort_handler() reinit_completion() wait_for_completion_timeout() csio_scsi_err_handler() complete() [mkp: fix typo] Signed-off-by: -
Colin Ian King authored
A dev_printk message spans two lines and the literal string is missing a white space between words. Add the white space. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Acked-by:
Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by:
Hannes Reinecke <hare@suse.com> Signed-off-by:
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John Garry authored
When the v2 hw is attached with many disks through an expander, there may be OOB reset resulting in a PHY going down after the speed is negotiated (very low probability). This issue is resolved by modifying the link control registers to send three identify frames before the PHY is ready (according to 6.10.3.3.2 in SAS 3.0 spec) and close ready when the PHY is down. Signed-off-by:
NengLong Zhao <zhaonenglong@hisilicon.com> Signed-off-by:
John Garry <john.garry@huawei.com> Reviewed-by:
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John Garry authored
In setup_itct_v2_hw(), SATA device type SAS_SATA_PENDING is missing, so add it. Note: The HiSi SAS controller does not support SATA PM, so do not handle SAS_SATA_PM_PORT or SAS_SATA_PM. Signed-off-by:
Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by:
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John Garry authored
Function config_id_frame_v1_hw() is called twice for each PHY during initialisation, which is unneeded. So remove init_id_frame_v1_hw(), which only calls config_id_frame_v1_hw(). We will keep the call to config_id_frame_v1_hw() in start_phy_v1_hw() since it will be used for PHY reset functions. Signed-off-by:
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John Garry authored
Function config_id_frame_v2_hw() is called twice for each PHY during initialisation, which is unneeded. So remove init_id_frame_v2_hw(), which only calls config_id_frame_v2_hw(). We will keep the call to config_id_frame_v2_hw() in start_phy_v2_hw() since it will be used for PHY reset functions. Signed-off-by:
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John Garry authored
The endianness for the SAS address in the TX_ID_DWORD registers is set incorrectly. We see errors like this in the boot log for v2 hw (which would have the same issue as v1 hw): [ 7.583284] sas: target proto 0x0 at 50000d1108e7923f:0x1f not handled This is due to the host SAS addr not matching the PHY SAS addr in the expander host-attached phy discovery responses. To fix, we byte swap the SAS addr from BE to LE (which is the endianness of the SAS controller). Signed-off-by:
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John Garry authored
The endianness for the SAS address in the TX_ID_DWORD registers is set incorrectly. We see errors like this in the boot log: [ 7.583284] sas: target proto 0x0 at 50000d1108e7923f:0x1f not handled This is due to the host SAS addr not matching the PHY SAS addr in the expander host-attached phy discovery responses. To fix, we byte swap the SAS addr from BE to LE (which is the endianness of the SAS controller). Signed-off-by:
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John Garry authored
The device DMA mask was being set after the bulk of the DMA allocations in the driver init, so potentially DMA allocates fail. To resolve, relocate before allocating the DMA memory when initialising the driver. Signed-off-by:
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John Garry authored
If hisi_sas_task_prep() fails for a SATA device due to PHY down, we return a failure to libata and also call task_done(), which will cause ata_qc_complete() to be called twice: - first call from hisi_sas_task_prep(), which will clear flag ATA_QCFLAG_ACTIVE - ata_qc_complete() called from libata The warning call trace is as follows: [ 117.070206] [<ffff0000084f59b0>] __ata_qc_complete+0xf4/0x11c [ 117.070208] [<ffff0000084f5b58>] ata_qc_complete+0x180/0x200 [ 117.070210] [<ffff0000084f5dd0>] ata_qc_issue+0x110/0x354 [ 117.070212] [<ffff0000084f6254>] ata_exec_internal_sg+0x240/0x4d0 [ 117.070214] [<ffff0000084f6544>] ata_exec_internal+0x60/0xa0 [ 117.070217] [<ffff000008501580>] ata_read_log_page+0x188/0x1b4 [ 117.070218] [<ffff0000085017dc>] ata_eh_analyze_ncq_error+0xa8/0x274 [ 117.070220] [<ffff000008501a3c>] ata_eh_link_autopsy+0x94/0x8c8 [ 117.070222] [<ffff0000085022a4>] ata_eh_autopsy+0x34/0xe8 [ 117.070223] [<ffff00000850540c>] ata_do_eh+0x28/0xc0 [ 117.070225] [<ffff0000085054e0>] ata_std_error_handler+0x3c/0x84 [ 117.070227] [<ffff000008505140>] ata_scsi_port_error_handler+0x480/0x674 [ 117.070230] [<ffff0000084e3020>] async_sas_ata_eh+0x44/0x78 [ 117.070231] [<ffff0000080d6b8c>] async_run_entry_fn+0x40/0x104 [ 117.070234] [<ffff0000080ce518>] process_one_work+0x128/0x2f0 [ 117.070235] [<ffff0000080ce738>] worker_thread+0x58/0x434 [ 117.070237] [<ffff0000080d416c>] kthread+0xd4/0xe8 [ 117.070240] [<ffff000008084e10>] ret_from_fork+0x10/0x40 The issue is resolved by simply returning a failure status code to the upper layer. Signed-off-by:
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John Garry authored
In function phy_up_v2_hw(), we needlessly recalculate the phy linkrate for all phys, and the calculation is incorrect for phy8, so remove this code. Signed-off-by:
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John Garry authored
The Delivery queue enable register should only be written to once at reset for v2 hw. Signed-off-by:
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John Garry authored
The memory calculation for the tags bitmap should use BITS_PER_BYTE macro instead of coincidental same value of sizeof(unsigned long). Signed-off-by:
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John Garry authored
Currently the slot memory is zeroed when it is freed and also when it is reused, like in hisi_sas_task_prep(). Optimise by avoiding the redundant zeroing in the free. Signed-off-by:
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John Garry authored
None of the CHL_INT2 interrupts are serviced in the channel irq ISR, so leave the interrupt source masked. The interrupt mask is initially set in init_reg_v2_hw(). Signed-off-by:
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John Garry authored
Optimise by saving an avoidable read in the get_free_slot function. The delivery queue write pointer will only be updated by software, so don't bother re-reading what was already written in the previous call to start_delivery function. Signed-off-by:
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John Garry authored
Optimise by saving an avoidable read in the cq interrupt. The queue read pointer will only be updated by software, so don't bother re-reading what was already written in the previous interrupt. Signed-off-by:
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Matthew R. Ochs authored
Commit 888baf06 ("scsi: cxlflash: Add kref to context") introduced a kref to the context. In particular, the detach routine was updated to use the kref services for managing the removal and destruction of a context. As part of this change, the tracking mechanism internal to the detach handler was refactored. This introduced a bug that can cause the tracking state to be lost. This can lead to a situation where exclusive access to a context is prematurely [and unknowingly] relinquished for the executing thread. To remedy, only update the tracking state when the kref operation indicates the context was removed. Fixes: 888baf06 ("scsi: cxlflash: Add kref to context") Signed-off-by:
Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Acked-by:
Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by:
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Matthew R. Ochs authored
Commit 964497b3 ("cxlflash: Remove dual port online dependency") logically removed the ability for the WWPN setup routine afu_set_wwpn() to return a non-success value. This routine can safely be made a void to simplify the code as there is no longer a need to report a failure. Signed-off-by:
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Matthew R. Ochs authored
When an EEH occurs during device initialization, the port timeout logic can cause excessive delays as MMIO reads will fail. Depending on where they are experienced, these delays can lead to a prolonged reset, causing an unnecessary triggering of other timeout logic in the SCSI stack or user applications. To expedite recovery, the port timeout logic is updated to decay the timeout at a much faster rate when in the presence of a likely EEH frozen event. Signed-off-by:
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Matthew R. Ochs authored
The EEH reset handler is ignorant to the current state of the driver when processing a frozen event and initiating a device reset. This can be an issue if an EEH event occurs while a user or stack initiated reset is executing. More specifically, if an EEH occurs while the SCSI host reset handler is active, the reset initiated by the EEH thread will likely collide with the host reset thread. This can leave the device in an inconsistent state, or worse, cause a system crash. As a remedy, the EEH handler is updated to evaluate the device state and take appropriate action (proceed, wait, or disconnect host). The host reset handler is also updated to handle situations where an EEH occurred during a host reset. In such situations, the host reset handler will delay reporting back a success to give the EEH reset an opportunity to complete. Signed-off-by:
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- 09 Sep, 2016 7 commits
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Uma Krishnan authored
Commit 704c4b0d ("cxlflash: Shutdown notify support for CXL Flash cards") was recently introduced to notify the AFU when a system is going down. Due to the position of the cxlflash driver in the device stack, cxlflash devices are _always_ removed during a reboot/shutdown. This can lead to a crash if the cxlflash shutdown hook is invoked _after_ the shutdown hook for the owning virtual PHB. Furthermore, the current implementation of shutdown/remove hooks for cxlflash are not tolerant to being invoked when the device is not enabled. This can also lead to a crash in situations where the remove hook is invoked after the device has been removed via the vPHBs shutdown hook. An example of this scenario would be an EEH reset failure while a reboot/shutdown is in progress. To solve both problems, the shutdown hook for cxlflash is updated to simply remove the device. This path already includes the AFU notification and thus this solution will continue to perform the original intent. At the same time, the remove hook is updated to protect against being called when the device is not enabled. Fixes: 704c4b0d ("cxlflash: Shutdown notify support for CXL Flash cards") Signed-off-by:
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Uma Krishnan authored
When a port link is established, the AFU sends a 'link up' interrupt. After the link is up, corresponding initialization steps are performed on the card. Following that, when the card is ready for I/O, the AFU sends 'login succeeded' interrupt. Today, cxlflash invokes scsi_scan_host() upon receipt of both interrupts. SCSI commands sent to the port prior to the 'login succeeded' interrupt will fail with 'port not available' error. This is not desirable. Moreover, when async_scan is active for the host, subsequent scan calls are terminated with error. Due to this, the scsi_scan_host() call performed after 'login succeeded' interrupt could portentially return error and the devices may not be scanned properly. To avoid this problem, scsi_scan_host() should be called only after the 'login succeeded' interrupt. Signed-off-by:
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Wei Yongjun authored
Fix typo in parameter description. Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by:
Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by:
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Kiwoong Kim authored
I modified a string as described in UFS spec as follow: umpcrs -> upmcrs. [mkp: applied by hand] Signed-off-by:
Kiwoong Kim <kwmad.kim@samsung.com> Signed-off-by:
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Baoyou Xie authored
We get a few warnings when building kernel with W=1: drivers/scsi/bnx2fc/bnx2fc_els.c:257:6: warning: no previous prototype for 'bnx2fc_srr_compl' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_els.c:367:6: warning: no previous prototype for 'bnx2fc_rec_compl' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_fcoe.c:628:5: warning: no previous prototype for 'bnx2fc_percpu_io_thread' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_fcoe.c:1413:26: warning: no previous prototype for 'bnx2fc_interface_create' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_hwi.c:997:21: warning: no previous prototype for 'bnx2fc_alloc_work' [-Wmissing-prototypes] drivers/scsi/bnx2fc/bnx2fc_io.c:1082:5: warning: no previous prototype for 'bnx2fc_abts_cleanup' [-Wmissing-prototypes] .... In fact, these functions are only used in the file in which they are declared and don't need a declaration, but can be made static. so this patch marks these functions with 'static'. Signed-off-by:
Baoyou Xie <baoyou.xie@linaro.org> Acked-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by:
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Baoyou Xie authored
We get 1 warning when building kernel with W=1: drivers/scsi/aacraid/src.c:616:5: warning: no previous prototype for 'aac_src_select_comm' [-Wmissing-prototypes] In fact, this function is only used in the file in which it is declared and don't need a declaration, but can be made static. so this patch marks this function with 'static'. Signed-off-by:
Dave Carroll <david.carroll@microsemi.com> Signed-off-by:
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Christophe JAILLET authored
Calling 'list_splice' followed by 'INIT_LIST_HEAD' is equivalent to 'list_splice_init'. This has been spotted with the following coccinelle script: ///// @@ expression y,z; @@ - list_splice(y,z); - INIT_LIST_HEAD(y); + list_splice_init(y,z); Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by:
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- 04 Sep, 2016 6 commits
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Baoyou Xie authored
We get 2 warnings when build kernel with W=1: drivers/scsi/ufs/tc-dwc-g210.c:261:5: warning: no previous prototype for 'tc_dwc_g210_config_40_bit' [-Wmissing-prototypes] drivers/scsi/ufs/tc-dwc-g210.c:293:5: warning: no previous prototype for 'tc_dwc_g210_config_20_bit' [-Wmissing-prototypes] In fact, these functions are declared in ufs/tc-dwc-g210.h, so this patch add missing header dependencies Signed-off-by:
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Julia Lawall authored
sr_pm_ops, of type struct dev_pm_ops, is never modified, so declare it as const. Done with the help of Coccinelle. Signed-off-by:
Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by:
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Baoyou Xie authored
We get 4 warnings about global functions without a declaration in the scsi pmcraid driver when building with W=1: drivers/scsi/pmcraid.c:309:6: warning: no previous prototype for 'pmcraid_init_cmdblk' [-Wmissing-prototypes] drivers/scsi/pmcraid.c:404:6: warning: no previous prototype for 'pmcraid_return_cmd' [-Wmissing-prototypes] drivers/scsi/pmcraid.c:1713:6: warning: no previous prototype for 'pmcraid_ioasc_logger' [-Wmissing-prototypes] drivers/scsi/pmcraid.c:3141:1: warning: no previous prototype for 'pmcraid_init_ioadls' [-Wmissing-prototypes] In fact, these functions are only used in the file in which it is declared and don't need a declaration, but can be made static. so this patch marks it 'static'. Signed-off-by:
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Bryant G. Ly authored
SUPPORTED_FORMATS is 1 << 1 so it's never zero. Signed-off-by:
Bryant G. Ly <bryantly@linux.vnet.ibm.com> Signed-off-by:
Michael Cyr <mikecyr@linux.vnet.ibm.com> Signed-off-by:
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Bryant G. Ly authored
[mkp: applied by hand] Signed-off-by:
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Bryant G. Ly authored
The driver currently doesn't properly deregisters target sessions completely, so this will address that. Signed-off-by:
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- 02 Sep, 2016 2 commits
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Kevin Barnett authored
[mkp: fixed typo] Reviewed-by:
Scott Benesh <scott.benesh@microsemi.com> Reviewed-by:
Tomas Henzl <thenzl@redhat.com> Signed-off-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
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Don Brace authored
added Documentation/scsi/smartpqi.txt [mkp: applied by hand] Reviewed-by:
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