msm: kgsl: Update calculation for graphics IOMMU context IDs

Calculate graphics IOMMU context IDs using the 'label' property
of the device tree node of that context. Context IDs are independent
of the register addresses of the SMMU device and its contexts, which
change for every target.

Change-Id: I16825d7248081997a442d4fb59ca5b04b88e33fd
Signed-off-by: Lokesh Batra <lbatra@codeaurora.org>
Signed-off-by: Lynus Vaz <lvaz@codeaurora.org>
msm: kgsl: get pm_qos_latency from device tree

pm_qos_latency parameter can be configured from
device tree as well. Will set to default value if
entry not found in target device tree.

Conflicts:
	include/linux/msm_kgsl.h

Change-Id: I76271f4fdc26e191431e5dfe2a6de9e2b3ab426f
Signed-off-by: Prakash Kamliya <pkamliya@codeaurora.org>
msm: kgsl: change pm_qos_latency to pm-qos-latency

Use hyphen symbol instead of underscore for pm-qos-latency
property name. Hyphen should be used instead of underscore
in device tree property name.

Change-Id: I23f720159b4ecb3d81cbd13b570cee8fc633253a
Signed-off-by: Prakash Kamliya <pkamliya@codeaurora.org>
msm: kgsl: Remove unused legacy IB timeout variables

Remove unused variables from legacy IB timeout detection.

Change-Id: I4df94ee43072ccebff4045c5950edbc406de38a8
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>
msm: kgsl: Dump snapshot for long IB timeout

Dump snapshot when long IB timeout is detected. The GPU
command processor is halted on long IB timeout detection,
this will halt the GPU pipeline, dumping the snapshot at
this point is safe and gives us information to debug
long IB timeout.

Change-Id: I51bb73b66e11c3b6945c3dfe92af03e21e3c0e62
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
msm: kgsl: use %pK to restrict printing GPU / memory addresses

Use %pK in the output for the per-process memory dump to keep from
printing the GPU and user memory addresses for the GPU memory
objects own by the process.  This allows us to make the 'mem' file
world readable without exposing any really dangerous information.

Change-Id: Ic0dedbad21654110905d1b3744f562966584d8ed
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Sunil Khatri <sunilkh@codeaurora.org>
msm: kgsl: don't use sscanf()

Friends do not let friends use sscanf().

CRs-Fixed: 563605
Change-Id: Ic0dedbad56af5bbee4fc833701d8bc93b118efa9
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: Fix spinlock recursion in destroy pagetable

pagetable list is protected by ptlock. Few functions
while iterating over a pagetable list takes same ptlock,
kgsl_destroy_pagetable() also need same lock. This will
cause spinlock recursion if kgsl_destroy_pagetable()
called while iterating over a list. Created two versions
of same function one is with lock and other is without
lock.

CRs-Fixed: 621172
Change-Id: I61440f99022fce8629a57bb5661e2eef9613187b
Signed-off-by: Prakash Kamliya <pkamliya@codeaurora.org>
msm: kgsl: Flush the UCHE when context changes

Add commands to flush the GPU UCHE when a new context submits
commands to GPU. The ensures that the new context does not use
stale data present in UCHE.

CRs-Fixed: 607976
Change-Id: I123a323be5f3fb9d1f9f96fed5bb68b8d0d27d76
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>
msm: kgsl: Enhance GFT to avoid hang->recover->hang cycle

If GFT recovered more than X times in Y ms invalidate the context
and do not attempt recovery. this is to prevent the case where GFT keeps
recovering continuously.

Change-Id: I9326a4cf0c8d1b6b92497ae5cd086e4b8bb7e89f
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
msm: kgsl: Protect fault detect start with active count

Get the active count when enabling GFT from sysfs so the performance
counters can be properly programmed.

CRs-Fixed: 622252
Change-Id: Ic0dedbadfe56f8c66aca15fb521494a2fc00332b
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: Enable protected mode for A3XX

Enable protected register mode for A3XX with these commits from
msm-3.10:

msm: kgsl: Enable protected register mode for A3XX
msm: kgsl: Print the register that causes a protected mode error
msm: kgsl: Unprotect the VBIF performance counters

Change-Id: Ic0dedbad950ffbd063fd861d9440bb5dce8d5fb1
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: Add hang interrupt and change HW fault generation

Add a sysfs property to dynamically control HW hang interrupt.
HW fault is generated for hang interrupt only.

Change-Id: Ib50c57476e54cccfef0ae18a0cbb42fce29457c1
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
msm: kgsl: Enable hang interrupt by setting right bits for A330V2

A330V2 hang interrupt bit is at a different location compared to
other A3XX cores. Set the right hang interrupt bit for A330V2.

Change-Id: I702f1653ed31907a708b19c7b2288644e2d45220
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
msm: kgsl: Enable hang interrupt for a330v2

Enable hang interrupt for a330v2 by default during
GPU initialization.

Change-Id: I0dd2054b8d640cf3b17afd3e2f8c4b88d575fce2
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
msm: kgsl: Fix power api's used in fault interrupt sysfs control

Sysfs control of fault interrupt is using incorrect GPU power
control api's. *_clk api should not be used by rest of the
GPU driver, use the correct api for consistency.

Change-Id: I32f161c1fbf60ffe9458a5f64a8f8efb0dc79311
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
ion: Add missing unlock on error path

A mutex_unlock was missing for the alloc_lock on an error
path. Add it.

Change-Id: If88b72fbc2fd18504347b784d5daa2bc9170c55f
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
ion: retry during race with shrinking/allocating

There exists a race between shrinking/allocating

Thread 1:                           Thread:2
mutex_lock(&sheap->alloc_lock)
ion_secure_cma_add_to_pool()
mutex_lock(&sheap->chunk_lock)
chunk->cnt = 0
mutex_unlock(&sheap->chunk_lock)
                                    ion_secure_cma_shrinker
                                    mutex_lock(&sheap->chunk_lock)
                                    __ion_secure_cma_shrink_pool
                                    chunk->cnt == 0 for the
                                       just allocated chunk
                                    ion_secure_cma-free_chunk
ion_secure_cma_alloc_from_pool
no memory to allocate!

If this race happens, just retry adding memory to the pool instead
of BUGing out the system.

Change-Id: Ic95782db6d88a33f01dcc5248fc957ca0f378078
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
msm: kgsl: Increase the timeout value for fault detection

Increment the timeout value for detecting faults from 50ms to
200ms. The fault detection mechanism is a backup to hardware
fault detection. 50ms is small since it has been observed that
this mechanism triggers false positives with 50ms.

CRs-Fixed: 630776
Change-Id: I8f382051e06bdc47f152309a2868092e1980604e
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
msm: kgsl: Add new API's to track device mutex owner

Add new API's kgsl_mutex_lock/unlock to track device mutex owner.
Mutex owner is an atomic variable and all operations set/clear on
it are also atomic to avoid any race conditions.

If a thread tries to acquire the mutex using new API, try to acquire
the mutex only if mutex owner is not same as current thread. This is
to prevent deadlocks which can happen if a thread tries to acquire
mutex with mutex held.

Change-Id: I3da4d0427ede5458f6a663043c57a4799b72d8fd
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>