/**
* adreno_drawctxt_create - create a new adreno draw context
* @dev_priv: the owner of the context
* @flags: flags for the context (passed from user space)
*
* Create and return a new draw context for the 3D core.
*/
struct kgsl_context *
adreno_drawctxt_create(struct kgsl_device_private *dev_priv,
uint32_t *flags)
{
struct adreno_context *drawctxt;
struct kgsl_device *device = dev_priv->device;
int ret;
drawctxt = kzalloc(sizeof(struct adreno_context), GFP_KERNEL);
if (drawctxt == NULL)
return ERR_PTR(-ENOMEM);
ret = kgsl_context_init(dev_priv, &drawctxt->base);
if (ret != 0) {
kfree(drawctxt);
return ERR_PTR(ret);
}
drawctxt->timestamp = 0;
drawctxt->base.flags = *flags & (KGSL_CONTEXT_PREAMBLE |
KGSL_CONTEXT_NO_GMEM_ALLOC |
KGSL_CONTEXT_PER_CONTEXT_TS |
KGSL_CONTEXT_USER_GENERATED_TS |
KGSL_CONTEXT_NO_FAULT_TOLERANCE |
KGSL_CONTEXT_CTX_SWITCH |
KGSL_CONTEXT_PRIORITY_MASK |
KGSL_CONTEXT_TYPE_MASK |
KGSL_CONTEXT_PWR_CONSTRAINT);
/* Always enable per-context timestamps */
drawctxt->base.flags |= KGSL_CONTEXT_PER_CONTEXT_TS;
drawctxt->type = (drawctxt->base.flags & KGSL_CONTEXT_TYPE_MASK)
>> KGSL_CONTEXT_TYPE_SHIFT;
mutex_init(&drawctxt->mutex);
init_waitqueue_head(&drawctxt->wq);
init_waitqueue_head(&drawctxt->waiting);
/* Set the context priority */
_set_context_priority(drawctxt);
/*
* Set up the plist node for the dispatcher. Insert the node into the
* drawctxt pending list based on priority.
*/
plist_node_init(&drawctxt->pending, drawctxt->base.priority);
if ((drawctxt->base.flags & KGSL_CONTEXT_PREAMBLE) == 0 ||
(drawctxt->base.flags & KGSL_CONTEXT_NO_GMEM_ALLOC) == 0) {
KGSL_DEV_ERR_ONCE(device,
"legacy context switch not supported\n");
ret = -EINVAL;
goto err;
}
kgsl_sharedmem_writel(device, &device->memstore,
KGSL_MEMSTORE_OFFSET(drawctxt->base.id, soptimestamp),
0);
kgsl_sharedmem_writel(device, &device->memstore,
KGSL_MEMSTORE_OFFSET(drawctxt->base.id, eoptimestamp),
0);
/* copy back whatever flags we dediced were valid */
*flags = drawctxt->base.flags;
return &drawctxt->base;
err:
kgsl_context_detach(&drawctxt->base);
return ERR_PTR(ret);
}
/**
* adreno_drawctxt_create - create a new adreno draw context
* @dev_priv: the owner of the context
* @flags: flags for the context (passed from user space)
*
* Create and return a new draw context for the 3D core.
*/
struct kgsl_context *
adreno_drawctxt_create(struct kgsl_device_private *dev_priv,
uint32_t *flags)
{
struct adreno_context *drawctxt;
struct kgsl_device *device = dev_priv->device;
struct adreno_device *adreno_dev = ADRENO_DEVICE(device);
int ret;
unsigned long local;
local = *flags & (KGSL_CONTEXT_PREAMBLE |
KGSL_CONTEXT_NO_GMEM_ALLOC |
KGSL_CONTEXT_PER_CONTEXT_TS |
KGSL_CONTEXT_USER_GENERATED_TS |
KGSL_CONTEXT_NO_FAULT_TOLERANCE |
KGSL_CONTEXT_CTX_SWITCH |
KGSL_CONTEXT_PRIORITY_MASK |
KGSL_CONTEXT_TYPE_MASK |
KGSL_CONTEXT_PWR_CONSTRAINT |
KGSL_CONTEXT_IFH_NOP |
KGSL_CONTEXT_SECURE);
/* Check for errors before trying to initialize */
/* We no longer support legacy context switching */
if ((local & KGSL_CONTEXT_PREAMBLE) == 0 ||
(local & KGSL_CONTEXT_NO_GMEM_ALLOC) == 0) {
KGSL_DEV_ERR_ONCE(device,
"legacy context switch not supported\n");
return ERR_PTR(-EINVAL);
}
/* Make sure that our target can support secure contexts if requested */
if (!kgsl_mmu_is_secured(&dev_priv->device->mmu) &&
(local & KGSL_CONTEXT_SECURE)) {
KGSL_DEV_ERR_ONCE(device, "Secure context not supported\n");
return ERR_PTR(-EINVAL);
}
drawctxt = kzalloc(sizeof(struct adreno_context), GFP_KERNEL);
if (drawctxt == NULL)
return ERR_PTR(-ENOMEM);
ret = kgsl_context_init(dev_priv, &drawctxt->base);
if (ret != 0) {
kfree(drawctxt);
return ERR_PTR(ret);
}
drawctxt->timestamp = 0;
drawctxt->base.flags = local;
/* Always enable per-context timestamps */
drawctxt->base.flags |= KGSL_CONTEXT_PER_CONTEXT_TS;
drawctxt->type = (drawctxt->base.flags & KGSL_CONTEXT_TYPE_MASK)
>> KGSL_CONTEXT_TYPE_SHIFT;
spin_lock_init(&drawctxt->lock);
init_waitqueue_head(&drawctxt->wq);
init_waitqueue_head(&drawctxt->waiting);
/* Set the context priority */
_set_context_priority(drawctxt);
/* set the context ringbuffer */
drawctxt->rb = adreno_ctx_get_rb(adreno_dev, drawctxt);
/*
* Set up the plist node for the dispatcher. Insert the node into the
* drawctxt pending list based on priority.
*/
plist_node_init(&drawctxt->pending, drawctxt->base.priority);
kgsl_sharedmem_writel(device, &device->memstore,
KGSL_MEMSTORE_OFFSET(drawctxt->base.id, soptimestamp),
0);
kgsl_sharedmem_writel(device, &device->memstore,
KGSL_MEMSTORE_OFFSET(drawctxt->base.id, eoptimestamp),
0);
adreno_context_debugfs_init(ADRENO_DEVICE(device), drawctxt);
/* copy back whatever flags we dediced were valid */
*flags = drawctxt->base.flags;
return &drawctxt->base;
}
