linux/drivers/gpu/drm/radeon/uvd_v1_0.c

/*
 * Copyright 2013 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Christian König <[email protected]>
 */

#include <linux/firmware.h>

#include "radeon.h"
#include "radeon_asic.h"
#include "r600d.h"

/**
 * uvd_v1_0_get_rptr - get read pointer
 *
 * @rdev: radeon_device pointer
 * @ring: radeon_ring pointer
 *
 * Returns the current hardware read pointer
 */
uint32_t uvd_v1_0_get_rptr(struct radeon_device *rdev,
			   struct radeon_ring *ring)
{ … }

/**
 * uvd_v1_0_get_wptr - get write pointer
 *
 * @rdev: radeon_device pointer
 * @ring: radeon_ring pointer
 *
 * Returns the current hardware write pointer
 */
uint32_t uvd_v1_0_get_wptr(struct radeon_device *rdev,
			   struct radeon_ring *ring)
{ … }

/**
 * uvd_v1_0_set_wptr - set write pointer
 *
 * @rdev: radeon_device pointer
 * @ring: radeon_ring pointer
 *
 * Commits the write pointer to the hardware
 */
void uvd_v1_0_set_wptr(struct radeon_device *rdev,
		       struct radeon_ring *ring)
{ … }

/**
 * uvd_v1_0_fence_emit - emit an fence & trap command
 *
 * @rdev: radeon_device pointer
 * @fence: fence to emit
 *
 * Write a fence and a trap command to the ring.
 */
void uvd_v1_0_fence_emit(struct radeon_device *rdev,
			 struct radeon_fence *fence)
{ … }

/**
 * uvd_v1_0_resume - memory controller programming
 *
 * @rdev: radeon_device pointer
 *
 * Let the UVD memory controller know it's offsets
 */
int uvd_v1_0_resume(struct radeon_device *rdev)
{ … }

/**
 * uvd_v1_0_init - start and test UVD block
 *
 * @rdev: radeon_device pointer
 *
 * Initialize the hardware, boot up the VCPU and do some testing
 */
int uvd_v1_0_init(struct radeon_device *rdev)
{ … }

/**
 * uvd_v1_0_fini - stop the hardware block
 *
 * @rdev: radeon_device pointer
 *
 * Stop the UVD block, mark ring as not ready any more
 */
void uvd_v1_0_fini(struct radeon_device *rdev)
{ … }

/**
 * uvd_v1_0_start - start UVD block
 *
 * @rdev: radeon_device pointer
 *
 * Setup and start the UVD block
 */
int uvd_v1_0_start(struct radeon_device *rdev)
{ … }

/**
 * uvd_v1_0_stop - stop UVD block
 *
 * @rdev: radeon_device pointer
 *
 * stop the UVD block
 */
void uvd_v1_0_stop(struct radeon_device *rdev)
{ … }

/**
 * uvd_v1_0_ring_test - register write test
 *
 * @rdev: radeon_device pointer
 * @ring: radeon_ring pointer
 *
 * Test if we can successfully write to the context register
 */
int uvd_v1_0_ring_test(struct radeon_device *rdev, struct radeon_ring *ring)
{ … }

/**
 * uvd_v1_0_semaphore_emit - emit semaphore command
 *
 * @rdev: radeon_device pointer
 * @ring: radeon_ring pointer
 * @semaphore: semaphore to emit commands for
 * @emit_wait: true if we should emit a wait command
 *
 * Emit a semaphore command (either wait or signal) to the UVD ring.
 */
bool uvd_v1_0_semaphore_emit(struct radeon_device *rdev,
			     struct radeon_ring *ring,
			     struct radeon_semaphore *semaphore,
			     bool emit_wait)
{ … }

/**
 * uvd_v1_0_ib_execute - execute indirect buffer
 *
 * @rdev: radeon_device pointer
 * @ib: indirect buffer to execute
 *
 * Write ring commands to execute the indirect buffer
 */
void uvd_v1_0_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
{ … }

/**
 * uvd_v1_0_ib_test - test ib execution
 *
 * @rdev: radeon_device pointer
 * @ring: radeon_ring pointer
 *
 * Test if we can successfully execute an IB
 */
int uvd_v1_0_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
{ … }