int adreno_drawctxt_switch(struct adreno_device *adreno_dev,
struct adreno_context *drawctxt,
unsigned int flags)
{
struct kgsl_device *device = &adreno_dev->dev;
int ret = 0;
/* already current? */
if (adreno_dev->drawctxt_active == drawctxt)
return ret;
trace_adreno_drawctxt_switch(adreno_dev->drawctxt_active,
drawctxt, flags);
/* Get a refcount to the new instance */
if (drawctxt) {
if (!_kgsl_context_get(&drawctxt->base))
return -EINVAL;
ret = kgsl_mmu_setstate(&device->mmu,
drawctxt->base.proc_priv->pagetable,
adreno_dev->drawctxt_active ?
adreno_dev->drawctxt_active->base.id :
KGSL_CONTEXT_INVALID);
/* Set the new context */
ret = adreno_context_restore(adreno_dev, drawctxt);
if (ret) {
KGSL_DRV_ERR(device,
"Error in GPU context %d restore: %d\n",
drawctxt->base.id, ret);
return ret;
}
} else {
/*
* No context - set the default pagetable and thats it.
* If there isn't a current context, the kgsl_mmu_setstate
* will use the CPU path so we don't need to give
* it a valid context id.
*/
ret = kgsl_mmu_setstate(&device->mmu,
device->mmu.defaultpagetable,
adreno_dev->drawctxt_active->base.id);
}
/* Put the old instance of the active drawctxt */
if (adreno_dev->drawctxt_active)
kgsl_context_put(&adreno_dev->drawctxt_active->base);
adreno_dev->drawctxt_active = drawctxt;
return 0;
}
int adreno_drawctxt_switch(struct adreno_device *adreno_dev,
struct adreno_ringbuffer *rb,
struct adreno_context *drawctxt,
unsigned int flags)
{
struct kgsl_device *device = &adreno_dev->dev;
struct kgsl_pagetable *new_pt;
int ret = 0;
/* We always expect a valid rb */
BUG_ON(!rb);
/* already current? */
if (rb->drawctxt_active == drawctxt)
return ret;
trace_adreno_drawctxt_switch(rb,
drawctxt, flags);
/* Get a refcount to the new instance */
if (drawctxt) {
if (!_kgsl_context_get(&drawctxt->base))
return -EINVAL;
new_pt = drawctxt->base.proc_priv->pagetable;
} else {
/* No context - set the default pagetable and thats it. */
new_pt = device->mmu.defaultpagetable;
}
ret = adreno_iommu_set_pt(rb, new_pt);
if (ret) {
KGSL_DRV_ERR(device,
"Failed to set pagetable on rb %d\n", rb->id);
return ret;
}
/* Put the old instance of the active drawctxt */
if (rb->drawctxt_active)
kgsl_context_put(&rb->drawctxt_active->base);
rb->drawctxt_active = drawctxt;
/* Set the new context */
adreno_context_restore(rb);
return 0;
}
