/**
* adreno_drawctxt_detach(): detach a context from the GPU
* @context: Generic KGSL context container for the context
*
*/
int adreno_drawctxt_detach(struct kgsl_context *context)
{
struct kgsl_device *device;
struct adreno_device *adreno_dev;
struct adreno_context *drawctxt;
int ret;
if (context == NULL)
return 0;
device = context->device;
adreno_dev = ADRENO_DEVICE(device);
drawctxt = ADRENO_CONTEXT(context);
/* deactivate context */
if (adreno_dev->drawctxt_active == drawctxt)
adreno_drawctxt_switch(adreno_dev, NULL, 0);
spin_lock(&drawctxt->lock);
while (drawctxt->cmdqueue_head != drawctxt->cmdqueue_tail) {
struct kgsl_cmdbatch *cmdbatch =
drawctxt->cmdqueue[drawctxt->cmdqueue_head];
drawctxt->cmdqueue_head = (drawctxt->cmdqueue_head + 1) %
ADRENO_CONTEXT_CMDQUEUE_SIZE;
spin_unlock(&drawctxt->lock);
/*
* If the context is deteached while we are waiting for
* the next command in GFT SKIP CMD, print the context
* detached status here.
*/
adreno_fault_skipcmd_detached(device, drawctxt, cmdbatch);
/*
* Don't hold the drawctxt mutex while the cmdbatch is being
* destroyed because the cmdbatch destroy takes the device
* mutex and the world falls in on itself
*/
kgsl_cmdbatch_destroy(cmdbatch);
spin_lock(&drawctxt->lock);
}
spin_unlock(&drawctxt->lock);
/*
* internal_timestamp is set in adreno_ringbuffer_addcmds,
* which holds the device mutex. The entire context destroy
* process requires the device mutex as well. But lets
* make sure we notice if the locking changes.
*/
BUG_ON(!mutex_is_locked(&device->mutex));
/* Wait for the last global timestamp to pass before continuing.
* The maxumum wait time is 30s, some large IB's can take longer
* than 10s and if hang happens then the time for the context's
* commands to retire will be greater than 10s. 30s should be sufficient
* time to wait for the commands even if a hang happens.
*/
ret = adreno_drawctxt_wait_global(adreno_dev, context,
drawctxt->internal_timestamp, 30 * 1000);
/*
* If the wait for global fails then nothing after this point is likely
* to work very well - BUG_ON() so we can take advantage of the debug
* tools to figure out what the h - e - double hockey sticks happened
*/
BUG_ON(ret);
kgsl_sharedmem_writel(device, &device->memstore,
KGSL_MEMSTORE_OFFSET(context->id, soptimestamp),
drawctxt->timestamp);
kgsl_sharedmem_writel(device, &device->memstore,
KGSL_MEMSTORE_OFFSET(context->id, eoptimestamp),
drawctxt->timestamp);
adreno_profile_process_results(device);
if (drawctxt->ops && drawctxt->ops->detach)
drawctxt->ops->detach(drawctxt);
/* wake threads waiting to submit commands from this context */
wake_up_all(&drawctxt->waiting);
wake_up_all(&drawctxt->wq);
return ret;
}
/**
* adreno_drawctxt_detach(): detach a context from the GPU
* @context: Generic KGSL context container for the context
*
*/
int adreno_drawctxt_detach(struct kgsl_context *context)
{
struct kgsl_device *device;
struct adreno_device *adreno_dev;
struct adreno_context *drawctxt;
int ret;
if (context == NULL)
return 0;
device = context->device;
adreno_dev = ADRENO_DEVICE(device);
drawctxt = ADRENO_CONTEXT(context);
/* deactivate context */
if (adreno_dev->drawctxt_active == drawctxt)
adreno_drawctxt_switch(adreno_dev, NULL, 0);
mutex_lock(&drawctxt->mutex);
while (drawctxt->cmdqueue_head != drawctxt->cmdqueue_tail) {
struct kgsl_cmdbatch *cmdbatch =
drawctxt->cmdqueue[drawctxt->cmdqueue_head];
drawctxt->cmdqueue_head = (drawctxt->cmdqueue_head + 1) %
ADRENO_CONTEXT_CMDQUEUE_SIZE;
mutex_unlock(&drawctxt->mutex);
/*
* Don't hold the drawctxt mutex while the cmdbatch is being
* destroyed because the cmdbatch destroy takes the device
* mutex and the world falls in on itself
*/
kgsl_cmdbatch_destroy(cmdbatch);
mutex_lock(&drawctxt->mutex);
}
mutex_unlock(&drawctxt->mutex);
/*
* internal_timestamp is set in adreno_ringbuffer_addcmds,
* which holds the device mutex. The entire context destroy
* process requires the device mutex as well. But lets
* make sure we notice if the locking changes.
*/
BUG_ON(!mutex_is_locked(&device->mutex));
/* Wait for the last global timestamp to pass before continuing */
ret = adreno_drawctxt_wait_global(adreno_dev, context,
drawctxt->internal_timestamp, 10 * 1000);
/*
* If the wait for global fails then nothing after this point is likely
* to work very well - BUG_ON() so we can take advantage of the debug
* tools to figure out what the h - e - double hockey sticks happened
*/
BUG_ON(ret);
kgsl_sharedmem_writel(device, &device->memstore,
KGSL_MEMSTORE_OFFSET(context->id, soptimestamp),
drawctxt->timestamp);
kgsl_sharedmem_writel(device, &device->memstore,
KGSL_MEMSTORE_OFFSET(context->id, eoptimestamp),
drawctxt->timestamp);
kgsl_sharedmem_free(&drawctxt->gpustate);
kgsl_sharedmem_free(&drawctxt->context_gmem_shadow.gmemshadow);
if (drawctxt->ops->detach)
drawctxt->ops->detach(drawctxt);
/* wake threads waiting to submit commands from this context */
wake_up_all(&drawctxt->waiting);
wake_up_all(&drawctxt->wq);
return ret;
}
