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
  41         return 0;
  42 }
  43
  44 int amdgpu_jpeg_sw_fini(struct amdgpu_device *adev)
  45 {
  46         int i;
  47
  48         cancel_delayed_work_sync(&adev->jpeg.idle_work);
  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         return 0;
  58 }
  59
  60 int amdgpu_jpeg_suspend(struct amdgpu_device *adev)
  61 {
  62         cancel_delayed_work_sync(&adev->jpeg.idle_work);
  63
  64         return 0;
  65 }
  66
  67 int amdgpu_jpeg_resume(struct amdgpu_device *adev)
  68 {
  69         return 0;
  70 }
  71
  72 static void amdgpu_jpeg_idle_work_handler(struct work_struct *work)
  73 {
  74         struct amdgpu_device *adev =
  75                 container_of(work, struct amdgpu_device, jpeg.idle_work.work);
  76         unsigned int fences = 0;
  77         unsigned int i;
  78
  79         for (i = 0; i < adev->jpeg.num_jpeg_inst; ++i) {
  80                 if (adev->jpeg.harvest_config & (1 << i))
  81                         continue;
  82
  83                 fences += amdgpu_fence_count_emitted(&adev->jpeg.inst[i].ring_dec);
  84         }
  85
  86         if (fences == 0)
  87                 amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_JPEG,
  88                                                        AMD_PG_STATE_GATE);
  89         else
  90                 schedule_delayed_work(&adev->jpeg.idle_work, JPEG_IDLE_TIMEOUT);
  91 }
  92
  93 void amdgpu_jpeg_ring_begin_use(struct amdgpu_ring *ring)
  94 {
  95         struct amdgpu_device *adev = ring->adev;
  96         bool set_clocks = !cancel_delayed_work_sync(&adev->jpeg.idle_work);
  97
  98         if (set_clocks)
  99                 amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_JPEG,
 100                                                        AMD_PG_STATE_UNGATE);
 101 }
 102
 103 void amdgpu_jpeg_ring_end_use(struct amdgpu_ring *ring)
 104 {
 105         schedule_delayed_work(&ring->adev->jpeg.idle_work, JPEG_IDLE_TIMEOUT);
 106 }
 107
 108 int amdgpu_jpeg_dec_ring_test_ring(struct amdgpu_ring *ring)
 109 {
 110         struct amdgpu_device *adev = ring->adev;
 111         uint32_t tmp = 0;
 112         unsigned i;
 113         int r;
 114
 115         WREG32(adev->jpeg.inst[ring->me].external.jpeg_pitch, 0xCAFEDEAD);
 116         r = amdgpu_ring_alloc(ring, 3);
 117         if (r)
 118                 return r;
 119
 120         amdgpu_ring_write(ring, PACKET0(adev->jpeg.internal.jpeg_pitch, 0));
 121         amdgpu_ring_write(ring, 0xDEADBEEF);
 122         amdgpu_ring_commit(ring);
 123
 124         for (i = 0; i < adev->usec_timeout; i++) {
 125                 tmp = RREG32(adev->jpeg.inst[ring->me].external.jpeg_pitch);
 126                 if (tmp == 0xDEADBEEF)
 127                         break;
 128                 udelay(1);
 129         }
 130
 131         if (i >= adev->usec_timeout)
 132                 r = -ETIMEDOUT;
 133
 134         return r;
 135 }
 136
 137 static int amdgpu_jpeg_dec_set_reg(struct amdgpu_ring *ring, uint32_t handle,
 138                 struct dma_fence **fence)
 139 {
 140         struct amdgpu_device *adev = ring->adev;
 141         struct amdgpu_job *job;
 142         struct amdgpu_ib *ib;
 143         struct dma_fence *f = NULL;
 144         const unsigned ib_size_dw = 16;
 145         int i, r;
 146
 147         r = amdgpu_job_alloc_with_ib(ring->adev, ib_size_dw * 4, &job);
 148         if (r)
 149                 return r;
 150
 151         ib = &job->ibs[0];
 152
 153         ib->ptr[0] = PACKETJ(adev->jpeg.internal.jpeg_pitch, 0, 0, PACKETJ_TYPE0);
 154         ib->ptr[1] = 0xDEADBEEF;
 155         for (i = 2; i < 16; i += 2) {
 156                 ib->ptr[i] = PACKETJ(0, 0, 0, PACKETJ_TYPE6);
 157                 ib->ptr[i+1] = 0;
 158         }
 159         ib->length_dw = 16;
 160
 161         r = amdgpu_job_submit_direct(job, ring, &f);
 162         if (r)
 163                 goto err;
 164
 165         if (fence)
 166                 *fence = dma_fence_get(f);
 167         dma_fence_put(f);
 168
 169         return 0;
 170
 171 err:
 172         amdgpu_job_free(job);
 173         return r;
 174 }
 175
 176 int amdgpu_jpeg_dec_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 177 {
 178         struct amdgpu_device *adev = ring->adev;
 179         uint32_t tmp = 0;
 180         unsigned i;
 181         struct dma_fence *fence = NULL;
 182         long r = 0;
 183
 184         r = amdgpu_jpeg_dec_set_reg(ring, 1, &fence);
 185         if (r)
 186                 goto error;
 187
 188         r = dma_fence_wait_timeout(fence, false, timeout);
 189         if (r == 0) {
 190                 r = -ETIMEDOUT;
 191                 goto error;
 192         } else if (r < 0) {
 193                 goto error;
 194         } else {
 195                 r = 0;
 196         }
 197
 198         for (i = 0; i < adev->usec_timeout; i++) {
 199                 tmp = RREG32(adev->jpeg.inst[ring->me].external.jpeg_pitch);
 200                 if (tmp == 0xDEADBEEF)
 201                         break;
 202                 udelay(1);
 203         }
 204
 205         if (i >= adev->usec_timeout)
 206                 r = -ETIMEDOUT;
 207
 208         dma_fence_put(fence);
 209 error:
 210         return r;
 211 }