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* msm: kgsl: Avoid an interrupt storm from the GPUCarter Cooper2016-03-23
| | | | | | | | | | CP_CACHE_FLUSH interrupts can storm on very rare occasions. Check for this interrupt storm and do nothing when it occurs rather than thrashing the CPU which can occasionally bring the system down. Change-Id: I0528ad4fec43abfaeeba1499d0b0e51e14b09f0d Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
* msm: kgsl: Make snapshot resilient to a non-existent ib1baseHarshdeep Dhatt2016-03-23
| | | | | | | | | | During snapshot, we may encounter an invalid IB1 base which is not found in the current rb. In that case, dump the entire ringbuffer from start to end and all the IBs in it to get a more complete picture of the failure. Change-Id: I4393c7de6f8f4890870fa6e2b5e69073dce922b7 Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
* msm: kgsl: Add accounting for memory mapped in userspaceHarshdeep Dhatt2016-03-23
| | | | | | | | | | | For proper memory accounting, a key metric is to know how much memory kgsl allocated for a process and how much of it the process is actually using. This is done by keeping track of memory in our vmfault routines. This information is provided via the process mem file. Change-Id: I7e3371a708ea5fdade3840b2384b3bc4012ad004 Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
* msm: kgsl: Move global pagetable entries to the IOMMU driverJordan Crouse2016-03-23
| | | | | | | | | Global pagetable entries are exclusively for IOMMU and per-process pagetables. Move all the code out of the generic driver and into the IOMMU driver and clean up a bunch of stuff along the way. Change-Id: Ic0dedbadbb368bb2a289ba4393f729d7e6066a17 Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
* msm: kgsl: Move setstate to the IOMMU initializationJordan Crouse2016-03-23
| | | | | | | | The setstate memory is a IOMMU specific construct. Move it to the IOMMU code where it belongs. Change-Id: Ic0dedbada977f2861f7c1300a5365da5b09d70a9 Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
* msm: kgsl: Do not purge non-overlapping freemem list entriesHarshdeep Dhatt2016-03-23
| | | | | | | | | | | A freemem list entry maybe truncated/deleted even if it doesn't overlap with a new buffer, for example, if the new buffer is entirely to the left or right of the entry. Fix the conditional logic so that an entry may be truncated/deleted only if it overlaps with the new buffer. Change-Id: Ib1519f20d3b56c1e0ed36e9e0afb33c1b31d6166 Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
* msm: kgsl: Purge a memfree entry correctlyHarshdeep Dhatt2016-03-23
| | | | | | | | | | For the case when newly allocated gpuaddr falls between a memfree entry's gpuaddr and size, the size of the mem entry was being truncated to a negative value. Fix the math to reflect the truncated size correctly. Change-Id: Id39519acc2af106240db8f41539b9fd1dc0cb0eb Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
* msm: kgsl: Correctly save the process mem entries in snapshotHarshdeep Dhatt2016-03-23
| | | | | | | | | | All the mem entries were being written to a single location hence the snapshot consisted of only the last mem entry of the process. Fix this by writing each mem entry to consecutive location in the snapshot. Change-Id: I1971fc4b3adce3146768862a56db2b11c6ac44c4 Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
* msm: kgsl: BUG_ON only if address is not an errorRajesh Kemisetti2016-03-23
| | | | | | | | | | | | | | _gpu_find_svm() makes a BUG_ON if the returned address is greater than ULONG_MAX. But in 32bit kernel, Error conditions would also make the comparison to be true. Because it compares address or error in unit64_t with ULONG_MAX which is in 32bit. Check whether returned address is an error before making the BUG_ON. Change-Id: I482b330db3e06a1bee31dd6931faf239a61f9ab8 Signed-off-by: Rajesh Kemisetti <rajeshk@codeaurora.org>
* msm: kgsl: Free allocated memory on early returnCarter Cooper2016-03-23
| | | | | | | Make sure the allocated memory is freed before returning. Change-Id: I6da7d1ffbd83ad206970e38ac99f9da211ffe86c Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
* msm: kgsl: Account for throttled clock cycles in DCVSOleg Perelet2016-03-23
| | | | | | | | Limits management can force clock throttling which results in incorrect busy percentage calculation. We need to account for that in DCVS. Change-Id: Iaa17a7f7d661ab9966597f7710374d5b2e00d514 Signed-off-by: Oleg Perelet <operelet@codeaurora.org>
* msm: kgsl: Fix direct references to HZSuman Tatiraju2016-03-23
| | | | | | | | Make the various timeout values HZ agnostic by using the proper macros and values instead. Change-Id: I708cd491f593782f0172cd7d2cca058cd41044a5 Signed-off-by: Suman Tatiraju <sumant@codeaurora.org>
* msm: kgsl: Add missing check for size against lower VARajesh Kemisetti2016-03-23
| | | | | | | | | | | | _get_unmapped_area_topdown() subtracts the requested size from lower entry base without really checking its value. This leads to overflow while working at boundary conditions. Add a condition to check entry base with the size and proceed. Change-Id: Ic695da683b11de35c7c4b8936a35d693dc8fa452 Signed-off-by: Rajesh Kemisetti <rajeshk@codeaurora.org>
* msm: kgsl: Prevent deadlock in cmdbatch timerTarun Karra2016-03-23
| | | | | | | | | | | | | | | | | Dispatcher can acquire drawctxt->lock if context is pending and the fence it is waiting on just got signalled. Dispatcher acquires drawctxt->lock and tries to delete the cmdbatch timer using delete_timer_sync(). Delete_timer_sync() waits till timer and its pending handlers are deleted. But if the timer expires at the same time, timer handler could be waiting on drawctxt->lock leading to a deadlock. To prevent this use spin_trylock_bh() instead of spin_lock_bh(). spin_trylock_bh() does not wait for the lock if it does not get it and allows the timer handler to finish. This prevents the deadlock. Change-Id: Ic2344fed5fccb581b58ec0b66b45ba68af9f1459 Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
* msm: kgsl: Add A540 limits managementOleg Perelet2016-03-23
| | | | | | | | Add ISENSE based limit management, provide interfaces to GPMU and hardware LLM and BCL subsystems. Change-Id: Ic0419509bdc6d4d9d478277cc90ae75dc527ca66 Signed-off-by: Oleg Perelet <operelet@codeaurora.org>
* msm: kgsl: Add support for the A540 GPUTarun Karra2016-03-23
| | | | | | | | | | | Add support for the A540 GPU device: * Add entry to the GPU list and add adreno_is_a540() functions * Add VBIF settings * Add hardware clock gating values Change-Id: Ibd653597400ded01ca05607fbbdafea3e86e177f Signed-off-by: Tarun Karra <tkarra@codeaurora.org> Signed-off-by: Oleg Perelet <operelet@codeaurora.org>
* msm: kgsl: Remove tracking virtual map sizesCarter Cooper2016-03-23
| | | | | | | | | mmapsize is no longer important to the memory descriptor and the APIs that would use it never materialized. It currently just tracks the size of the memdesc and is no longer needed. Change-Id: I8fa1001c2f89f23034029de7de6ab77532bf45fa Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
* msm: kgsl: Verify the pointer isn't NULL before using it for krefCarter Cooper2016-03-23
| | | | | | | | Probably overkill, but ensure that the struct pointer we are going to dereference to send into kref calls is valid before we dereference. Change-Id: I308176df9f7476a2a9f1357612381a93160ad698 Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
* msm: kgsl: Rework page allocation sizesCarter Cooper2016-03-23
| | | | | | | | Alignment checks only need to be done once and can be moved down to the lower layers. Change-Id: Ia4683cf9db08506db810e80854c006d94dc80310 Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
* msm: kgsl: Cleanup iommu interactions for secured MMU casesCarter Cooper2016-03-23
| | | | | | | | | | The code has gotten bloated and repeats the same logic in several places leading to very stringy code. Consolidate this code to enable easier readability as well as prep the code for future changes to this area. Change-Id: Ibb70cbae3a8a5157e589020ccebefff11b6ffaf1 Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
* msm: kgsl: Don't enable GPU 64bit when kernel is in 32bit configurationRajesh Kemisetti2016-03-23
| | | | | | | | | Setting the GPU to 64bit when rest of world is in 32bit can make the GPU misbehave. Hence, check the kernel configuration before actually moving the GPU to 64bit mode. Change-Id: Ie4cf6c2d4fdfa978287c86812bdce4bf8c56ef5f Signed-off-by: Rajesh Kemisetti <rajeshk@codeaurora.org>
* msm: kgsl: Fix state transition action from deep_nap statePrakash Kamliya2016-03-23
| | | | | | | | | Deep nap removes the quality of service latency vote. Restore device before powering back the GPU while coming out of deep nap. Change-Id: I9366ffa6f5f2768cb3ea10f9117678ba8cf8d190 Signed-off-by: Prakash Kamliya <pkamliya@codeaurora.org> Signed-off-by: Divya Ponnusamy <pdivya@codeaurora.org>
* msm: kgsl: Add a macro to derive the device from the mmu structureJordan Crouse2016-03-23
| | | | | | | | | struct kgsl_mmu is a static member of struct kgsl_device so we can use the usual container_of trick to get the device from a mmu pointer rather than carry around an unneeded back reference. Change-Id: Ic0dedbad7ff22e598b03d980dfbb738374ed5a7a Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
* msm: kgsl: Add macros to facilitate checking MMU and pagetable opsJordan Crouse2016-03-23
| | | | | | | | | The MMU code does most of its magic by way of device specific MMU and pagetable functions. Add macros to make it easier for developers to verify that hooks exist before calling them. Change-Id: Ic0dedbadf74682adebec1a973384e1d3bbf4f79e Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
* msm: kgsl: Skip a5xx_post_start if it isn't neededJordan Crouse2016-03-23
| | | | | | | | | a5xx_post_start() is currently only used for either an A530 workaround OR preemption. If neither are allocated then memory is allocated in the ringbuffer for no reason and it confuses everybody. Change-Id: Ic0dedbad7615ba0593da5eb701cc5943877883f4 Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
* msm: kgsl: Fix race condition in snapshot sysfs readHarshdeep Dhatt2016-03-23
| | | | | | | | | | | | If there are concurrent sysfs reads of snapshot binary there can be a race condition where the snapshot data is prematurely free'd by one reader while the other reader is still reading it. Fix this by proper refcounting using an atomic. CRs-Fixed: 902816 Change-Id: I7a156c3a22f5475df0394ae30328d0fd6140f3da Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
* msm: kgsl: Increase GPMU timeoutsJordan Crouse2016-03-22
| | | | | | | | The existing timeout values for the various GPMU interactions seems to have been a tad optimistic for all conditions. Increase them to cover measured worse case scenarios. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
* msm: kgsl: Conditionally use bwmon governor if it existsJordan Crouse2016-03-22
| | | | | | | Wrap the code to use the bwmon governor or not depending if it exists. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
* msm: kgsl: Update various exernal APIs for the 4.4 kernelJordan Crouse2016-03-22
| | | | | | | | | | | | | | | Make several changes to build the GPU driver for 4.4: - Rename CONFIG_MSM to CONFIG_QCOM where applicable - Add msm_kgsl.h to the Kbuild exports - Remove linux/coresight_of.h (as it has been merged into coresight.h) and remove the .owner member of the coresight_desc struct. - Use the new location for the sync.h file (in staging) - Remove an unused sync function - Move oneshot_sync.h inside of #ifdef wrappers Signed-off-by: Jordan Crouse <jcrouse@codeauorora.org>
* devfreq: Add Qualcomm GPU devfreq governorsJordan Crouse2016-03-22
| | | | | | | | Snapshot of the Qualcomm GPU devfreq governors and support as of msm-3.18 commit e70ad0cd5efd ("Promotion of kernel.lnx.3.18-151201."). Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
* msm: kgsl: Add Qualcomm GPU driverJordan Crouse2016-03-22
Snapshot of the Qualcom Adreno GPU driver (KGSL) as of msm-3.18 commit commit e70ad0cd5efd ("Promotion of kernel.lnx.3.18-151201."). Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
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