summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/ufs
Commit message (Collapse)AuthorAgeFilesLines
* scsi: ufs: select CONFIG_NLSArnd Bergmann2016-03-181-0/+1
| | | | | | | | | | | | | | | A recent change to ufshcd introduced a call to utf16s_to_utf8s, a function that is provided by the NLS module, so we get a link error when that is not present: drivers/scsi/built-in.o: In function `ufshcd_read_string_desc': :(.text+0x124d0): undefined reference to `utf16s_to_utf8s' This adds a Kconfig 'select' statement to avoid the build error. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: b573d484e4ff ("scsi: ufs: add support to read device and string descriptors") Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs-qcom: add printouts of testbus debug registersYaniv Gardi2016-03-152-0/+86
| | | | | | | | This change adds printouts of testbus and debug registers. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs-qcom: enable/disable the device ref clockYaniv Gardi2016-03-152-0/+21
| | | | | | | | | This change enables the device ref clock before changing to HS mode and disables it if entered to PWM mode. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs-qcom: set PA_Local_TX_LCC_Enable before link startupYaniv Gardi2016-03-152-7/+21
| | | | | | | | | | | | Some UFS devices (and may be host) have issues if LCC is enabled. So we are setting PA_Local_TX_LCC_Enable to 0 before link startup which will make sure that both host and device TX LCC are disabled once link startup is completed. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: add device quirk delay before putting UFS rails in LPMYaniv Gardi2016-03-152-1/+23
| | | | | | | | | | | | | | | | We put the UFS device in sleep state & UFS link in hibern8 state during runtime suspend. After this we put all the UFS rails in low power modes immediately but it seems some devices may still draw more than sleep current from UFS rails (especially from VCCQ rail) at-least for 500us. To avoid this situation, this change adds 2ms delay before putting these UFS rails in LPM mode. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: fix leakage during link off stateYaniv Gardi2016-03-151-0/+10
| | | | | | | | | | | | | Currently when we try to put the link in off/disabled state during suspend, it seems link is not being kept in low power mode. This patch fixes the issue by putting the link in hibern8 first (so device also puts the link in low power mode) and then stop the host controller. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: tune UniPro parameters to optimize hibern8 exit timeYaniv Gardi2016-03-154-0/+142
| | | | | | | | | | | | | | | Optimal values of local UniPro parameters like PA_Hibern8Time & PA_TActivate can help reduce the hibern8 exit latency. If both host and device supports UniPro ver1.6 or later, these parameters will be automatically tuned during link startup itself. But if either host or device doesn't support UniPro ver 1.6 or later, we have to manually tune them. But to keep manual tuning logic simple, we will only do manual tuning if local unipro version doesn't support ver1.6 or later. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: handle non spec compliant bkops behaviour by deviceYaniv Gardi2016-03-152-7/+52
| | | | | | | | | | | | We are seeing that some devices are raising the urgent bkops exception events even when BKOPS status doesn't indicate performace impacted or critical. Handle these device by determining their urgent bkops status at runtime. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: add retry for query descriptorsYaniv Gardi2016-03-151-18/+37
| | | | | | | | | | | Query commands have 100ms timeout and it may timeout if they are issued in parallel to ongoing read/write SCSI commands, this change adds the retry (max: 10) in case command timeouts. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: add error recovery after DL NAC errorYaniv Gardi2016-03-152-0/+95
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some vendor's UFS device sends back to back NACs for the DL data frames causing the host controller to raise the DFES error status. Sometimes such UFS devices send back to back NAC without waiting for new retransmitted DL frame from the host and in such cases it might be possible the Host UniPro goes into bad state without raising the DFES error interrupt. If this happens then all the pending commands would timeout only after respective SW command (which is generally too large). This change workarounds such device behaviour like this: - As soon as SW sees the DL NAC error, it would schedule the error handler - Error handler would sleep for 50ms to see if there any fatal errors raised by UFS controller. - If there are fatal errors then SW does normal error recovery. - If there are no fatal errors then SW sends the NOP command to device to check if link is alive. - If NOP command times out, SW does normal error recovery - If NOP command succeed, skip the error handling. If DL NAC error is seen multiple times with some vendor's UFS devices then enable this quirk to initiate quick error recovery and also silence related error logs to reduce spamming of kernel logs. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: make error handling bit fasterYaniv Gardi2016-03-151-43/+112
| | | | | | | | | | | | | | | | UFS driver's error handler forcefully tries to clear all the pending requests. For each pending request in the queue, it waits 1 sec for it to get cleared. If we have multiple requests in the queue then it's possible that we might end up waiting for those many seconds before resetting the host. But note that resetting host would any way clear all the pending requests from the hardware. Hence this change skips the forceful clear of the pending requests if we are anyway going to reset the host (for fatal errors). Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: disable vccq if it's not needed by UFS deviceYaniv Gardi2016-03-152-4/+57
| | | | | | | | | | | Some UFS devices don't require VCCQ rail for device operations hence this change adds support to recognize such devices and remove vote for the unused VCCQ rail. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: separate device and host quirksYaniv Gardi2016-03-154-0/+244
| | | | | | | | | | | | | Currently we use the host quirks mechanism in order to handle both device and host controller quirks. In order to support various of UFS devices we should separate handling the device quirks from the host controller's. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Raviv Shvili <rshvili@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: add support to read device and string descriptorsYaniv Gardi2016-03-153-1/+95
| | | | | | | | | | | This change adds support to read device descriptor and string descriptor from a UFS device Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Raviv Shvili <rshvili@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: verify hba controller hce reg valueYaniv Gardi2016-03-152-30/+35
| | | | | | | | | | | | | | | | Sometimes due to hw issues it takes some time to the host controller register to update. In order to verify the register has updated, a polling is done until its value is set. In addition the functions ufshcd_hba_stop() and ufshcd_wait_for_register() was updated with an additional input parameter, indicating the timeout between reads will be done by sleeping or spinning the cpu. Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Raviv Shvili <rshvili@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: implement scsi host timeout handlerYaniv Gardi2016-03-151-0/+36
| | | | | | | | | | | | | | | | | | | | | | A race condition exists between request requeueing and scsi layer error handling: When UFS driver queuecommand returns a busy status for a request, it will be requeued and its tag will be freed and set to -1. At the same time it is possible that the request will timeout and scsi layer will start error handling for it. The scsi layer reuses the request and its tag to send error related commands to the device, however its tag is no longer valid. As this request was never really sent to the device, there is no point to start error handling with the device. Implement the scsi error handling timeout callback and bypass SCSI error handling for request that were not actually sent to the device. For such requests simply reset the block layer timer. Otherwise, let SCSI layer perform the usual error handling. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: avoid spurious UFS host controller interruptsYaniv Gardi2016-03-151-0/+15
| | | | | | | | | | | | | | When control reaches to Linux UFS driver during UFS boot mode, UFS host controller interrupt status/enable registers may have left over settings. In order to avoid any spurious interrupts due to these left overs, it's important to clear these interrupt status/enable registers before enabling UFS interrupt handling. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs-qcom: add number of lanes per directionYaniv Gardi2016-03-154-17/+44
| | | | | | | | | | | | | Different platform may have different number of lanes for the UFS link. Add parameter to device tree specifying how many lanes should be configured for the UFS link. Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: fix typo in commentTomas Winkler2016-02-241-1/+1
| | | | | | | [mkp: Only one typo remained] Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ufs: fix typo: MAZ to MAXTomas Winkler2016-02-242-2/+2
| | | | | | | | QUERY_DESC_GEOMETRY_MAZ_SIZE QUERY_DESC_GEOMETRY_MAX_SIZE Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: add wrapper for retrying sending query attributeYaniv Gardi2016-02-241-7/+44
| | | | | | | | | | | | Sometimes queries from the device might return a failure so it is recommended to retry sending the query, before giving up. This change adds a wrapper to retry sending a query attribute, in cases where we need to wait longer, before we continue, or before reporting a failure. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: commit descriptors before setting the doorbellYaniv Gardi2016-02-241-0/+2
| | | | | | | | | | | | | Add a write memory barrier to make sure descriptors prepared are actually written to memory before ringing the doorbell. We have also added the write memory barrier after ringing the doorbell register so that controller sees the new request immediately. Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: add missing memory barriersYaniv Gardi2016-02-241-6/+13
| | | | | | | | | | | | | | Performing several writes to UFS host controller registers has no guarantee of ordering, so we must make sure register writes to setup request list base address etc. are performed before the run/stop register is enabled. In addition, when setting up a task request, we must make sure the updating of descriptors takes places before ringing the doorbell, similarly to setting up a transfer request. Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: reduce the interrupts for power mode change requestsYaniv Gardi2016-02-241-14/+27
| | | | | | | | | | | | | | | | | DME commands such as Hibern8 enter/exit and gear switch generate 2 completion interrupts, one for confirmation that command is received by local UniPro and 2nd one is the final confirmation after communication with remote UniPro. Currently both of these completions are registered as interrupt events which is not quite necessary and instead we can just wait for the interrupt of 2nd completion, this should reduce the number of interrupts and could reduce the unnecessary CPU wakeups to handle extra interrupts. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: retry failed query flag requestsYaniv Gardi2016-02-242-26/+41
| | | | | | | | | | | UFS flag query requests may fail sometimes due to timeouts etc. Add a wrapper function to retry up to 10 times in case of such failure, similar to retries being made for attribute queries. Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: fix error recovery after the hibern8 exit failureYaniv Gardi2016-02-241-5/+53
| | | | | | | | | | | | | | | | | | Hibern8 exit can be called from 3 different contexts: - ufshcd_hibern8_exit_work - ufshcd_ungate_work - runtime/system resume If hibern8 exit fails for some reason then we try to bring the link to active state by link startup but this recovery mechanism results into deadlock or errors from first 2 context listed above. This change fixes the recovery by adding proper error handling mechanism. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: add retries for hibern8 enterYaniv Gardi2016-02-241-2/+24
| | | | | | | | | | | | | | | | | | | If hibern8 enter command fails then UFS link state may be unknown which may result into timeout of all the commands issued after failure. This change does 2 things (for pre-defined number of retry counts) after hibern8 enter failure: 1. Recovers the UFS link to active state 2. If link is recovered to active state, tries to put the UFS link in hibern8 enter again until retry count expires. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: add retries to dme_peer get and set attributeYaniv Gardi2016-02-241-11/+29
| | | | | | | | | | | | | The dme_peer get/set attribute commands are prone to errors, therefore we add three retries for the UIC command sending. Error code returned from ufshcd_send_uic_cmd() is checked, and unless it was successful or the retries have finished, another command will be sent. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Lee Susman <lsusman@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: avoid exception event handler racing with PM callbacksYaniv Gardi2016-02-241-1/+14
| | | | | | | | | | | | | | If device raises the exception event in the response to the commands sent during the runtime/system PM callbacks, exception event handler might run in parallel with PM callbacks and may see unclocked register accesses. This change fixes this issue by not scheduling the exception event handler while PM callbacks are running. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: increase fDeviceInit query response timeoutYaniv Gardi2016-02-241-1/+11
| | | | | | | | | | | | | | | fDeviceInit query response time for some devices is too long that default query request timeout of 100ms may not be enough. Experiments show that fDeviceInit response sometimes takes 500ms so to be on safer side this change sets the timeout to 600ms. Without this change, we might unnecessarily have to retry fDeviceInit query requests multiple times and each query request timeout prints one error message. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: clear outstanding_request bit in case query timeoutYaniv Gardi2016-02-241-2/+20
| | | | | | | | | | | | When sending a query to the device returns with a timeout error, we clear the corresponding bit in the DOORBELL register but we don't clear the outstanding_request field as we should. This patch fixes this bug. Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: verify command tag validityYaniv Gardi2016-02-241-2/+22
| | | | | | | | | | | | | | | A race condition appear to exist between request completion when scsi_done() is called to end the request and set the tag back to -1 (at blk_queue_end_tag() scsi_end_request), and scsi layer error handling which aborts the command and reuses it to request sense data. Sending the request sense is done with tag which was set to -1 and so it is invalid. Assert command tag passed from scsi layer is valid. Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: clear fields UTRD, UPIU req and rsp before new transfersYaniv Gardi2016-02-241-0/+8
| | | | | | | | | | | | | | | | | | | Some of the data structures (like response UPIU) and/or its elements (unused fields) should be cleared before sending out the respective command to UFS device. This change clears the UPIU response data structure for query commands and NOP command before sending out the command. We also initialize the PRDT table length to zero which should take care of commands which doesn't have any data associated with it. We are also clearing the unused fields in request UPIU for NOP command. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Tested-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: clear UTRD, UPIU req and rsp before new transfersYaniv Gardi2016-02-241-4/+12
| | | | | | | | | | | | | | | | | | | | | | Clear the UFS data structures before sending new request. The SCSI command is sent to the device within the UFS UPIU request. As part of the transfer UPIU preparation, the SCSI command is copied to the UPIU structure according to the SCSI command size. As different SCSI commands differ in size from each other, we need to clear the whole SCSI command field to prevent sending uninitialized data to the device. The UPIU response doesn't always include the sense data and can differ in size. Hence, the UPIU response should also be cleared before the transfer. Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Reviewed-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Maya Erez <merez@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: ufs: fix spelling mistake in error messageColin Ian King2015-12-011-1/+1
| | | | | | | | Minor issue, fix spelling mistake, Intialization -> Initialization Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Merge tag '4.4-scsi-mkp' into miscJames Bottomley2015-11-127-337/+1048
|\ | | | | | | | | | | SCSI queue for 4.4. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: ufs-qcom: add QUniPro hardware support and power optimizationsYaniv Gardi2015-11-104-181/+525
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | New revisions of UFS host controller supports the new UniPro hardware controller (referred as QUniPro). This patch adds the support to enable this new UniPro controller hardware. This change also adds power optimization for bus scaling feature, as well as support for HS-G3 power mode. Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: ufs-qcom: add debug prints for test busYaniv Gardi2015-11-104-4/+208
| | | | | | | | | | | | | | | | | | | | | | | | Adds support for configuring and reading the test bus and debug registers. This change also adds another vops in order to print the debug registers. Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: ufs: make the UFS variant a platform deviceYaniv Gardi2015-11-105-73/+139
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change turns the UFS variant (SCSI_UFS_QCOM) into a UFS a platform device. In order to do so a few additional changes are required: 1. The ufshcd-pltfrm is no longer serves as a platform device. Now it only serves as a group of platform APIs such as PM APIs (runtime suspend/resume, system suspend/resume etc), parsers of clocks, regulators and pm_levels from DT. 2. What used to be the old platform "probe" is now "only" a pltfrm_init() routine, that does exactly the same, but only being called by the new probe function of the UFS variant. Reviewed-by: Rob Herring <robherring2@gmail.com> Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: ufs: creates wrapper functions for vopsYaniv Gardi2015-11-093-66/+137
| | | | | | | | | | | | | | | | | | | | | | | | | | In order to simplify the code a set of wrapper functions is created to test and call each of the variant operations. Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: ufs: add ufshcd_get_variant ufshcd_set_variantYaniv Gardi2015-11-092-17/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds ufshcd_get_variant() and ufshcd_set_variant() routines in order to get/set the variant specific data. Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: ufs-qcom: update configuration option of SCSI_UFS_QCOM componentYaniv Gardi2015-11-091-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | This change is required in order to be able to build the component as a module. Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: ufs-qcom: fix compilation warning if compiled as a moduleYaniv Gardi2015-11-091-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This change fixes a compilation warning that happens if SCSI_UFS_QCOM is compiled as a module. Also this patch fixes an error happens when insmod the module: "ufs_qcom: module license 'unspecified' taints kernel." Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Reviewed-by: Gilad Broner <gbroner@codeaurora.org> Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* | scsi: use host wide tags by defaultChristoph Hellwig2015-11-101-8/+0Star
|/ | | | | | | | | | | | | 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>
* Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds2015-06-245-10/+200
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SCSI updates from James Bottomley: "This is the usual grab bag of driver updates (lpfc, hpsa, megaraid_sas, cxgbi, be2iscsi) plus an assortment of minor updates. There is also one new driver: the Cisco snic. The advansys driver has been rewritten to get rid of the warning about converting it to the DMA API, the tape statistics patch got in and finally, there's a resuffle of SCSI header files to separate more cleanly initiator from target mode (and better share the common definitions)" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (156 commits) snic: driver for Cisco SCSI HBA qla2xxx: Fix indentation qla2xxx: Comment out unreachable code fusion: remove dead MTRR code advansys: fix compilation errors and warnings when CONFIG_PCI is not set mptsas: fix depth param in scsi_track_queue_full megaraid: fix irq setup process regression lpfc: Update version to 10.7.0.0 for upstream patch set. lpfc: Fix to drop PLOGIs from fabric node till LOGO processing completes lpfc: Fix scsi task management error message. lpfc: Fix cq_id masking problem. lpfc: Fix scsi prep dma buf error. lpfc: Add support for using block multi-queue lpfc: Devices are not discovered during takeaway/giveback testing lpfc: Fix vport deletion failure. lpfc: Check for active portpeerbeacon. lpfc: Update driver version for upstream patch set 10.6.0.1. lpfc: Change buffer pool empty message to miscellaneous category lpfc: Fix incorrect log message reported for empty FCF record. lpfc: Fix rport leak. ...
| * scsi: ufs-qcom: enable UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSIONYaniv Gardi2015-06-021-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | Newer revisions of QUALCOMM Technologies UFS host controller may not advertise the correct version information in UFS HCI VER register. To handle this, enable UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION to let UFS standard host controller driver call into vendor specific operation to get right UFS HCI VER register value. Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
| * scsi: ufs: add quirk to handle broken UFS HCI versionYaniv Gardi2015-06-023-2/+18
| | | | | | | | | | | | | | | | | | | | | | Some host controller hardware controllers may not advertise correct version in UFS HCI VER register. To workaround this, add new quirk and call the host controller hardware vendor specific callback to get the correct UFS HCI version register value. Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
| * scsi: ufs-qcom: enable UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE quirkYaniv Gardi2015-06-021-1/+3
| | | | | | | | | | | | | | | | | | | | Current version of host controller on QUALCOMM Technologies requires this quirk to be enabled, as DME commands to device must be sent only in AUTO mode (SLOW AUTO or FAST AUTO). Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
| * scsi: ufs: introduce UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE quirkYaniv Gardi2015-06-022-0/+38
| | | | | | | | | | | | | | | | | | | | Some UFS host controllers may only allow accessing the peer DME attribute in AUTO mode (FAST AUTO or SLOW AUTO) hence we had added a quirk for switching to AUTO power mode before accessing the peer DME attribute. Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
| * scsi: ufs-qcom: enable quirk to fix gear change to HSYaniv Gardi2015-06-021-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | With the G3 UFS devices, changing gear into HS is failing in UFS host controllers of version 0x2. The quirk solves the problem of changing gear into HS by enabling the attribute that specifies whether or not the inbound Link supports unterminated line in HS mode. Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org> Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-14 07:41:20 +0100