/*
* Copyright 2013 Advanced Micro Devices, Inc.
* All Rights Reserved.
*
* 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* Authors: Christian König <christian.koenig@amd.com>
*/
#include <linux/firmware.h>
#include <drm/drmP.h>
#include "radeon.h"
#include "radeon_asic.h"
#include "sid.h"
/**
* vce_v1_0_get_rptr - get read pointer
*
* @rdev: radeon_device pointer
* @ring: radeon_ring pointer
*
* Returns the current hardware read pointer
*/
uint32_t vce_v1_0_get_rptr(struct radeon_device *rdev,
struct radeon_ring *ring)
{
if (ring->idx == TN_RING_TYPE_VCE1_INDEX)
return RREG32(VCE_RB_RPTR);
else
return RREG32(VCE_RB_RPTR2);
}
/**
* vce_v1_0_get_wptr - get write pointer
*
* @rdev: radeon_device pointer
* @ring: radeon_ring pointer
*
* Returns the current hardware write pointer
*/
uint32_t vce_v1_0_get_wptr(struct radeon_device *rdev,
struct radeon_ring *ring)
{
if (ring->idx == TN_RING_TYPE_VCE1_INDEX)
return RREG32(VCE_RB_WPTR);
else
return RREG32(VCE_RB_WPTR2);
}
/**
* vce_v1_0_set_wptr - set write pointer
*
* @rdev: radeon_device pointer
* @ring: radeon_ring pointer
*
* Commits the write pointer to the hardware
*/
void vce_v1_0_set_wptr(struct radeon_device *rdev,
struct radeon_ring *ring)
{
if (ring->idx == TN_RING_TYPE_VCE1_INDEX)
WREG32(VCE_RB_WPTR, ring->wptr);
else
WREG32(VCE_RB_WPTR2, ring->wptr);
}
/**
* vce_v1_0_start - start VCE block
*
* @rdev: radeon_device pointer
*
* Setup and start the VCE block
*/
int vce_v1_0_start(struct radeon_device *rdev)
{
struct radeon_ring *ring;
int i, j, r;
/* set BUSY flag */
WREG32_P(VCE_STATUS, 1, ~1);
ring = &rdev->ring[TN_RING_TYPE_VCE1_INDEX];
WREG32(VCE_RB_RPTR, ring->wptr);
WREG32(VCE_RB_WPTR, ring->wptr);
WREG32(VCE_RB_BASE_LO, ring->gpu_addr);
WREG32(VCE_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
WREG32(VCE_RB_SIZE, ring->ring_size / 4);
ring = &rdev->ring[TN_RING_TYPE_VCE2_INDEX];
WREG32(VCE_RB_RPTR2, ring->wptr);
WREG32(VCE_RB_WPTR2, ring->wptr);
WREG32(VCE_RB_BASE_LO2, ring->gpu_addr);
WREG32(VCE_RB_BASE_HI2, upper_32_bits(ring->gpu_addr));
WREG32(VCE_RB_SIZE2, ring->ring_size / 4);
WREG32_P(VCE_VCPU_CNTL, VCE_CLK_EN, ~VCE_CLK_EN);
WREG32_P(VCE_SOFT_RESET,
VCE_ECPU_SOFT_RESET |
VCE_FME_SOFT_RESET, ~(
VCE_ECPU_SOFT_RESET |
VCE_FME_SOFT_RESET));
mdelay(100);
WREG32_P(VCE_SOFT_RESET, 0, ~(
VCE_ECPU_SOFT_RESET |
VCE_FME_SOFT_RESET));
for (i = 0; i < 10; ++i) {
uint32_t status;
for (j = 0; j < 100; ++j) {
status = RREG32(VCE_STATUS);
if (status & 2)
break;
mdelay(10);
}
r = 0;
if (status & 2)
break;
DRM_ERROR("VCE not responding, trying to reset the ECPU!!!\n");
WREG32_P(VCE_SOFT_RESET, VCE_ECPU_SOFT_RESET, ~VCE_ECPU_SOFT_RESET);
mdelay(10);
WREG32_P(VCE_SOFT_RESET, 0, ~VCE_ECPU_SOFT_RESET);
mdelay(10);
r = -1;
}
/* clear BUSY flag */
WREG32_P(VCE_STATUS, 0, ~1);
if (r) {
DRM_ERROR("VCE not responding, giving up!!!\n");
return r;
}
return 0;
}
int vce_v1_0_init(struct radeon_device *rdev)
{
struct radeon_ring *ring;
int r;
r = vce_v1_0_start(rdev);
if (r)
return r;
ring = &rdev->ring[TN_RING_TYPE_VCE1_INDEX];
ring->ready = true;
r = radeon_ring_test(rdev, TN_RING_TYPE_VCE1_INDEX, ring);
if (r) {
ring->ready = false;
return r;
}
ring = &rdev->ring[TN_RING_TYPE_VCE2_INDEX];
ring->ready = true;
r = radeon_ring_test(rdev, TN_RING_TYPE_VCE2_INDEX, ring);
if (r) {
ring->ready = false;
return r;
}
DRM_INFO("VCE initialized successfully.\n");
return 0;
}
