drivers/gpu/drm/amd/amdgpu/amdgpu_jpeg.c

   1 /*
   2  * Copyright 2019 Advanced Micro Devices, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  16  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  17  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  18  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  19  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  *
  21  * The above copyright notice and this permission notice (including the
  22  * next paragraph) shall be included in all copies or substantial portions
  23  * of the Software.
  24  *
  25  */
  26
  27 #include "amdgpu.h"
  28 #include "amdgpu_jpeg.h"
  29 #include "amdgpu_pm.h"
  30 #include "soc15d.h"
  31 #include "soc15_common.h"
  32
  33 #define JPEG_IDLE_TIMEOUT       msecs_to_jiffies(1000)
  34
  35 static void amdgpu_jpeg_idle_work_handler(struct work_struct *work);
  36
  37 int amdgpu_jpeg_sw_init(struct amdgpu_device *adev)
  38 {
  39         INIT_DELAYED_WORK(&adev->jpeg.idle_work, amdgpu_jpeg_idle_work_handler);
  40         mutex_init(&adev->jpeg.jpeg_pg_lock);
  41         atomic_set(&adev->jpeg.total_submission_cnt, 0);
  42
  43         return 0;
  44 }
  45
  46 int amdgpu_jpeg_sw_fini(struct amdgpu_device *adev)
  47 {
  48         int i;
  49
  50         for (i = 0; i < adev->jpeg.num_jpeg_inst; ++i) {
  51                 if (adev->jpeg.harvest_config & (1 << i))
  52                         continue;
  53
  54                 amdgpu_ring_fini(&adev->jpeg.inst[i].ring_dec);
  55         }
  56
  57         mutex_destroy(&adev->jpeg.jpeg_pg_lock);
  58
  59         return 0;
  60 }
  61
  62 int amdgpu_jpeg_suspend(struct amdgpu_device *adev)
  63 {
  64         cancel_delayed_work_sync(&adev->jpeg.idle_work);
  65
  66         return 0;
  67 }
  68
  69 int amdgpu_jpeg_resume(struct amdgpu_device *adev)
  70 {
  71         return 0;
  72 }
  73
  74 static void amdgpu_jpeg_idle_work_handler(struct work_struct *work)
  75 {
  76         struct amdgpu_device *adev =
  77                 container_of(work, struct amdgpu_device, jpeg.idle_work.work);
  78         unsigned int fences = 0;
  79         unsigned int i;
  80
  81         for (i = 0; i < adev->jpeg.num_jpeg_inst; ++i) {
  82                 if (adev->jpeg.harvest_config & (1 << i))
  83                         continue;
  84
  85                 fences += amdgpu_fence_count_emitted(&adev->jpeg.inst[i].ring_dec);
  86         }
  87
  88         if (!fences && !atomic_read(&adev->jpeg.total_submission_cnt))
  89                 amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_JPEG,
  90                                                        AMD_PG_STATE_GATE);
  91         else
  92                 schedule_delayed_work(&adev->jpeg.idle_work, JPEG_IDLE_TIMEOUT);
  93 }
  94
  95 void amdgpu_jpeg_ring_begin_use(struct amdgpu_ring *ring)
  96 {
  97         struct amdgpu_device *adev = ring->adev;
  98
  99         atomic_inc(&adev->jpeg.total_submission_cnt);
 100         cancel_delayed_work_sync(&adev->jpeg.idle_work);
 101
 102         mutex_lock(&adev->jpeg.jpeg_pg_lock);
 103         amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_JPEG,
 104                                                        AMD_PG_STATE_UNGATE);
 105         mutex_unlock(&adev->jpeg.jpeg_pg_lock);
 106 }
 107
 108 void amdgpu_jpeg_ring_end_use(struct amdgpu_ring *ring)
 109 {
 110         atomic_dec(&ring->adev->jpeg.total_submission_cnt);
 111         schedule_delayed_work(&ring->adev->jpeg.idle_work, JPEG_IDLE_TIMEOUT);
 112 }
 113
 114 int amdgpu_jpeg_dec_ring_test_ring(struct amdgpu_ring *ring)
 115 {
 116         struct amdgpu_device *adev = ring->adev;
 117         uint32_t tmp = 0;
 118         unsigned i;
 119         int r;
 120
 121         WREG32(adev->jpeg.inst[ring->me].external.jpeg_pitch, 0xCAFEDEAD);
 122         r = amdgpu_ring_alloc(ring, 3);
 123         if (r)
 124                 return r;
 125
 126         amdgpu_ring_write(ring, PACKET0(adev->jpeg.internal.jpeg_pitch, 0));
 127         amdgpu_ring_write(ring, 0xDEADBEEF);
 128         amdgpu_ring_commit(ring);
 129
 130         for (i = 0; i < adev->usec_timeout; i++) {
 131                 tmp = RREG32(adev->jpeg.inst[ring->me].external.jpeg_pitch);
 132                 if (tmp == 0xDEADBEEF)
 133                         break;
 134                 udelay(1);
 135         }
 136
 137         if (i >= adev->usec_timeout)
 138                 r = -ETIMEDOUT;
 139
 140         return r;
 141 }
 142
 143 static int amdgpu_jpeg_dec_set_reg(struct amdgpu_ring *ring, uint32_t handle,
 144                 struct dma_fence **fence)
 145 {
 146         struct amdgpu_device *adev = ring->adev;
 147         struct amdgpu_job *job;
 148         struct amdgpu_ib *ib;
 149         struct dma_fence *f = NULL;
 150         const unsigned ib_size_dw = 16;
 151         int i, r;
 152
 153         r = amdgpu_job_alloc_with_ib(ring->adev, ib_size_dw * 4,
 154                                         AMDGPU_IB_POOL_DIRECT, &job);
 155         if (r)
 156                 return r;
 157
 158         ib = &job->ibs[0];
 159
 160         ib->ptr[0] = PACKETJ(adev->jpeg.internal.jpeg_pitch, 0, 0, PACKETJ_TYPE0);
 161         ib->ptr[1] = 0xDEADBEEF;
 162         for (i = 2; i < 16; i += 2) {
 163                 ib->ptr[i] = PACKETJ(0, 0, 0, PACKETJ_TYPE6);
 164                 ib->ptr[i+1] = 0;
 165         }
 166         ib->length_dw = 16;
 167
 168         r = amdgpu_job_submit_direct(job, ring, &f);
 169         if (r)
 170                 goto err;
 171
 172         if (fence)
 173                 *fence = dma_fence_get(f);
 174         dma_fence_put(f);
 175
 176         return 0;
 177
 178 err:
 179         amdgpu_job_free(job);
 180         return r;
 181 }
 182
 183 int amdgpu_jpeg_dec_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 184 {
 185         struct amdgpu_device *adev = ring->adev;
 186         uint32_t tmp = 0;
 187         unsigned i;
 188         struct dma_fence *fence = NULL;
 189         long r = 0;
 190
 191         r = amdgpu_jpeg_dec_set_reg(ring, 1, &fence);
 192         if (r)
 193                 goto error;
 194
 195         r = dma_fence_wait_timeout(fence, false, timeout);
 196         if (r == 0) {
 197                 r = -ETIMEDOUT;
 198                 goto error;
 199         } else if (r < 0) {
 200                 goto error;
 201         } else {
 202                 r = 0;
 203         }
 204
 205         for (i = 0; i < adev->usec_timeout; i++) {
 206                 tmp = RREG32(adev->jpeg.inst[ring->me].external.jpeg_pitch);
 207                 if (tmp == 0xDEADBEEF)
 208                         break;
 209                 udelay(1);
 210         }
 211
 212         if (i >= adev->usec_timeout)
 213                 r = -ETIMEDOUT;
 214
 215         dma_fence_put(fence);
 216 error:
 217         return r;
 218 }