/**
* radeon_irq_reset_work_func - execute gpu reset
*
* @work: work struct
*
* Execute scheduled gpu reset (cayman+).
* This function is called when the irq handler
* thinks we need a gpu reset.
*/
static void radeon_irq_reset_work_func(struct work_struct *work)
{
struct radeon_device *rdev = container_of(work, struct radeon_device,
reset_work);
radeon_gpu_reset(rdev);
}
static int radeon_cs_handle_lockup(struct radeon_device *rdev, int r)
{
if (r == -EDEADLK) {
r = radeon_gpu_reset(rdev);
if (!r)
r = -EAGAIN;
}
return r;
}
/**
* radeon_fence_wait_empty_locked - wait for all fences to signal
*
* @rdev: radeon device pointer
* @ring: ring index the fence is associated with
*
* Wait for all fences on the requested ring to signal (all asics).
* Returns 0 if the fences have passed, error for all other cases.
* Caller must hold ring lock.
*/
void radeon_fence_wait_empty_locked(struct radeon_device *rdev, int ring)
{
uint64_t seq = rdev->fence_drv[ring].sync_seq[ring];
while(1) {
int r;
r = radeon_fence_wait_seq(rdev, seq, ring, false, false);
if (r == -EDEADLK) {
mutex_unlock(&rdev->ring_lock);
r = radeon_gpu_reset(rdev);
mutex_lock(&rdev->ring_lock);
if (!r)
continue;
}
if (r) {
dev_err(rdev->dev, "error waiting for ring to become"
" idle (%d)\n", r);
}
return;
}
}
/**
* radeon_irq_reset_work_func - execute gpu reset
*
* @work: work struct
*
* Execute scheduled gpu reset (cayman+).
* This function is called when the irq handler
* thinks we need a gpu reset.
*/
static void radeon_irq_reset_work_func(void *arg, int pending)
{
struct radeon_device *rdev = arg;
radeon_gpu_reset(rdev);
}
int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
{
struct radeon_device *rdev = dev->dev_private;
struct radeon_cs_parser parser;
int r;
lockmgr(&rdev->exclusive_lock, LK_EXCLUSIVE);
if (!rdev->accel_working) {
lockmgr(&rdev->exclusive_lock, LK_RELEASE);
return -EBUSY;
}
if (rdev->in_reset) {
lockmgr(&rdev->exclusive_lock, LK_RELEASE);
r = radeon_gpu_reset(rdev);
if (!r)
r = -EAGAIN;
return r;
}
/* initialize parser */
memset(&parser, 0, sizeof(struct radeon_cs_parser));
parser.filp = filp;
parser.rdev = rdev;
parser.dev = rdev->dev;
parser.family = rdev->family;
r = radeon_cs_parser_init(&parser, data);
if (r) {
DRM_ERROR("Failed to initialize parser !\n");
radeon_cs_parser_fini(&parser, r, false);
lockmgr(&rdev->exclusive_lock, LK_RELEASE);
r = radeon_cs_handle_lockup(rdev, r);
return r;
}
r = radeon_cs_ib_fill(rdev, &parser);
if (!r) {
r = radeon_cs_parser_relocs(&parser);
if (r && r != -ERESTARTSYS)
DRM_ERROR("Failed to parse relocation %d!\n", r);
}
if (r) {
radeon_cs_parser_fini(&parser, r, false);
lockmgr(&rdev->exclusive_lock, LK_RELEASE);
r = radeon_cs_handle_lockup(rdev, r);
return r;
}
#if TRACE_TODO
trace_radeon_cs(&parser);
#endif
r = radeon_cs_ib_chunk(rdev, &parser);
if (r) {
goto out;
}
r = radeon_cs_ib_vm_chunk(rdev, &parser);
if (r) {
goto out;
}
out:
radeon_cs_parser_fini(&parser, r, true);
lockmgr(&rdev->exclusive_lock, LK_RELEASE);
r = radeon_cs_handle_lockup(rdev, r);
return r;
}
