root/drivers/gpu/drm/msm/adreno/a6xx_gpu.c

DEFINITIONS

1. _a6xx_check_idle
2. a6xx_idle
3. a6xx_flush
4. get_stats_counter
5. a6xx_submit
6. a6xx_set_hwcg
7. a6xx_cp_init
8. a6xx_ucode_init
9. a6xx_zap_shader_init
10. a6xx_hw_init
11. a6xx_dump
12. a6xx_recover
13. a6xx_fault_handler
14. a6xx_cp_hw_err_irq
15. a6xx_fault_detect_irq
16. a6xx_irq
17. a6xx_pm_resume
18. a6xx_pm_suspend
19. a6xx_get_timestamp
20. a6xx_active_ring
21. a6xx_destroy
22. a6xx_gpu_busy
23. a6xx_gpu_init

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright (c) 2017-2018 The Linux Foundation. All rights reserved. */
   3 
   4 
   5 #include "msm_gem.h"
   6 #include "msm_mmu.h"
   7 #include "msm_gpu_trace.h"
   8 #include "a6xx_gpu.h"
   9 #include "a6xx_gmu.xml.h"
  10 
  11 #include <linux/devfreq.h>
  12 
  13 #define GPU_PAS_ID 13
  14 
  15 static inline bool _a6xx_check_idle(struct msm_gpu *gpu)
  16 {
  17         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
  18         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
  19 
  20         /* Check that the GMU is idle */
  21         if (!a6xx_gmu_isidle(&a6xx_gpu->gmu))
  22                 return false;
  23 
  24         /* Check tha the CX master is idle */
  25         if (gpu_read(gpu, REG_A6XX_RBBM_STATUS) &
  26                         ~A6XX_RBBM_STATUS_CP_AHB_BUSY_CX_MASTER)
  27                 return false;
  28 
  29         return !(gpu_read(gpu, REG_A6XX_RBBM_INT_0_STATUS) &
  30                 A6XX_RBBM_INT_0_MASK_RBBM_HANG_DETECT);
  31 }
  32 
  33 bool a6xx_idle(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
  34 {
  35         /* wait for CP to drain ringbuffer: */
  36         if (!adreno_idle(gpu, ring))
  37                 return false;
  38 
  39         if (spin_until(_a6xx_check_idle(gpu))) {
  40                 DRM_ERROR("%s: %ps: timeout waiting for GPU to idle: status %8.8X irq %8.8X rptr/wptr %d/%d\n",
  41                         gpu->name, __builtin_return_address(0),
  42                         gpu_read(gpu, REG_A6XX_RBBM_STATUS),
  43                         gpu_read(gpu, REG_A6XX_RBBM_INT_0_STATUS),
  44                         gpu_read(gpu, REG_A6XX_CP_RB_RPTR),
  45                         gpu_read(gpu, REG_A6XX_CP_RB_WPTR));
  46                 return false;
  47         }
  48 
  49         return true;
  50 }
  51 
  52 static void a6xx_flush(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
  53 {
  54         uint32_t wptr;
  55         unsigned long flags;
  56 
  57         spin_lock_irqsave(&ring->lock, flags);
  58 
  59         /* Copy the shadow to the actual register */
  60         ring->cur = ring->next;
  61 
  62         /* Make sure to wrap wptr if we need to */
  63         wptr = get_wptr(ring);
  64 
  65         spin_unlock_irqrestore(&ring->lock, flags);
  66 
  67         /* Make sure everything is posted before making a decision */
  68         mb();
  69 
  70         gpu_write(gpu, REG_A6XX_CP_RB_WPTR, wptr);
  71 }
  72 
  73 static void get_stats_counter(struct msm_ringbuffer *ring, u32 counter,
  74                 u64 iova)
  75 {
  76         OUT_PKT7(ring, CP_REG_TO_MEM, 3);
  77         OUT_RING(ring, counter | (1 << 30) | (2 << 18));
  78         OUT_RING(ring, lower_32_bits(iova));
  79         OUT_RING(ring, upper_32_bits(iova));
  80 }
  81 
  82 static void a6xx_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
  83         struct msm_file_private *ctx)
  84 {
  85         unsigned int index = submit->seqno % MSM_GPU_SUBMIT_STATS_COUNT;
  86         struct msm_drm_private *priv = gpu->dev->dev_private;
  87         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
  88         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
  89         struct msm_ringbuffer *ring = submit->ring;
  90         unsigned int i;
  91 
  92         get_stats_counter(ring, REG_A6XX_RBBM_PERFCTR_CP_0_LO,
  93                 rbmemptr_stats(ring, index, cpcycles_start));
  94 
  95         /*
  96          * For PM4 the GMU register offsets are calculated from the base of the
  97          * GPU registers so we need to add 0x1a800 to the register value on A630
  98          * to get the right value from PM4.
  99          */
 100         get_stats_counter(ring, REG_A6XX_GMU_ALWAYS_ON_COUNTER_L + 0x1a800,
 101                 rbmemptr_stats(ring, index, alwayson_start));
 102 
 103         /* Invalidate CCU depth and color */
 104         OUT_PKT7(ring, CP_EVENT_WRITE, 1);
 105         OUT_RING(ring, PC_CCU_INVALIDATE_DEPTH);
 106 
 107         OUT_PKT7(ring, CP_EVENT_WRITE, 1);
 108         OUT_RING(ring, PC_CCU_INVALIDATE_COLOR);
 109 
 110         /* Submit the commands */
 111         for (i = 0; i < submit->nr_cmds; i++) {
 112                 switch (submit->cmd[i].type) {
 113                 case MSM_SUBMIT_CMD_IB_TARGET_BUF:
 114                         break;
 115                 case MSM_SUBMIT_CMD_CTX_RESTORE_BUF:
 116                         if (priv->lastctx == ctx)
 117                                 break;
 118                         /* fall-thru */
 119                 case MSM_SUBMIT_CMD_BUF:
 120                         OUT_PKT7(ring, CP_INDIRECT_BUFFER_PFE, 3);
 121                         OUT_RING(ring, lower_32_bits(submit->cmd[i].iova));
 122                         OUT_RING(ring, upper_32_bits(submit->cmd[i].iova));
 123                         OUT_RING(ring, submit->cmd[i].size);
 124                         break;
 125                 }
 126         }
 127 
 128         get_stats_counter(ring, REG_A6XX_RBBM_PERFCTR_CP_0_LO,
 129                 rbmemptr_stats(ring, index, cpcycles_end));
 130         get_stats_counter(ring, REG_A6XX_GMU_ALWAYS_ON_COUNTER_L + 0x1a800,
 131                 rbmemptr_stats(ring, index, alwayson_end));
 132 
 133         /* Write the fence to the scratch register */
 134         OUT_PKT4(ring, REG_A6XX_CP_SCRATCH_REG(2), 1);
 135         OUT_RING(ring, submit->seqno);
 136 
 137         /*
 138          * Execute a CACHE_FLUSH_TS event. This will ensure that the
 139          * timestamp is written to the memory and then triggers the interrupt
 140          */
 141         OUT_PKT7(ring, CP_EVENT_WRITE, 4);
 142         OUT_RING(ring, CACHE_FLUSH_TS | (1 << 31));
 143         OUT_RING(ring, lower_32_bits(rbmemptr(ring, fence)));
 144         OUT_RING(ring, upper_32_bits(rbmemptr(ring, fence)));
 145         OUT_RING(ring, submit->seqno);
 146 
 147         trace_msm_gpu_submit_flush(submit,
 148                 gmu_read64(&a6xx_gpu->gmu, REG_A6XX_GMU_ALWAYS_ON_COUNTER_L,
 149                         REG_A6XX_GMU_ALWAYS_ON_COUNTER_H));
 150 
 151         a6xx_flush(gpu, ring);
 152 }
 153 
 154 static const struct {
 155         u32 offset;
 156         u32 value;
 157 } a6xx_hwcg[] = {
 158         {REG_A6XX_RBBM_CLOCK_CNTL_SP0, 0x22222222},
 159         {REG_A6XX_RBBM_CLOCK_CNTL_SP1, 0x22222222},
 160         {REG_A6XX_RBBM_CLOCK_CNTL_SP2, 0x22222222},
 161         {REG_A6XX_RBBM_CLOCK_CNTL_SP3, 0x22222222},
 162         {REG_A6XX_RBBM_CLOCK_CNTL2_SP0, 0x02022220},
 163         {REG_A6XX_RBBM_CLOCK_CNTL2_SP1, 0x02022220},
 164         {REG_A6XX_RBBM_CLOCK_CNTL2_SP2, 0x02022220},
 165         {REG_A6XX_RBBM_CLOCK_CNTL2_SP3, 0x02022220},
 166         {REG_A6XX_RBBM_CLOCK_DELAY_SP0, 0x00000080},
 167         {REG_A6XX_RBBM_CLOCK_DELAY_SP1, 0x00000080},
 168         {REG_A6XX_RBBM_CLOCK_DELAY_SP2, 0x00000080},
 169         {REG_A6XX_RBBM_CLOCK_DELAY_SP3, 0x00000080},
 170         {REG_A6XX_RBBM_CLOCK_HYST_SP0, 0x0000f3cf},
 171         {REG_A6XX_RBBM_CLOCK_HYST_SP1, 0x0000f3cf},
 172         {REG_A6XX_RBBM_CLOCK_HYST_SP2, 0x0000f3cf},
 173         {REG_A6XX_RBBM_CLOCK_HYST_SP3, 0x0000f3cf},
 174         {REG_A6XX_RBBM_CLOCK_CNTL_TP0, 0x02222222},
 175         {REG_A6XX_RBBM_CLOCK_CNTL_TP1, 0x02222222},
 176         {REG_A6XX_RBBM_CLOCK_CNTL_TP2, 0x02222222},
 177         {REG_A6XX_RBBM_CLOCK_CNTL_TP3, 0x02222222},
 178         {REG_A6XX_RBBM_CLOCK_CNTL2_TP0, 0x22222222},
 179         {REG_A6XX_RBBM_CLOCK_CNTL2_TP1, 0x22222222},
 180         {REG_A6XX_RBBM_CLOCK_CNTL2_TP2, 0x22222222},
 181         {REG_A6XX_RBBM_CLOCK_CNTL2_TP3, 0x22222222},
 182         {REG_A6XX_RBBM_CLOCK_CNTL3_TP0, 0x22222222},
 183         {REG_A6XX_RBBM_CLOCK_CNTL3_TP1, 0x22222222},
 184         {REG_A6XX_RBBM_CLOCK_CNTL3_TP2, 0x22222222},
 185         {REG_A6XX_RBBM_CLOCK_CNTL3_TP3, 0x22222222},
 186         {REG_A6XX_RBBM_CLOCK_CNTL4_TP0, 0x00022222},
 187         {REG_A6XX_RBBM_CLOCK_CNTL4_TP1, 0x00022222},
 188         {REG_A6XX_RBBM_CLOCK_CNTL4_TP2, 0x00022222},
 189         {REG_A6XX_RBBM_CLOCK_CNTL4_TP3, 0x00022222},
 190         {REG_A6XX_RBBM_CLOCK_HYST_TP0, 0x77777777},
 191         {REG_A6XX_RBBM_CLOCK_HYST_TP1, 0x77777777},
 192         {REG_A6XX_RBBM_CLOCK_HYST_TP2, 0x77777777},
 193         {REG_A6XX_RBBM_CLOCK_HYST_TP3, 0x77777777},
 194         {REG_A6XX_RBBM_CLOCK_HYST2_TP0, 0x77777777},
 195         {REG_A6XX_RBBM_CLOCK_HYST2_TP1, 0x77777777},
 196         {REG_A6XX_RBBM_CLOCK_HYST2_TP2, 0x77777777},
 197         {REG_A6XX_RBBM_CLOCK_HYST2_TP3, 0x77777777},
 198         {REG_A6XX_RBBM_CLOCK_HYST3_TP0, 0x77777777},
 199         {REG_A6XX_RBBM_CLOCK_HYST3_TP1, 0x77777777},
 200         {REG_A6XX_RBBM_CLOCK_HYST3_TP2, 0x77777777},
 201         {REG_A6XX_RBBM_CLOCK_HYST3_TP3, 0x77777777},
 202         {REG_A6XX_RBBM_CLOCK_HYST4_TP0, 0x00077777},
 203         {REG_A6XX_RBBM_CLOCK_HYST4_TP1, 0x00077777},
 204         {REG_A6XX_RBBM_CLOCK_HYST4_TP2, 0x00077777},
 205         {REG_A6XX_RBBM_CLOCK_HYST4_TP3, 0x00077777},
 206         {REG_A6XX_RBBM_CLOCK_DELAY_TP0, 0x11111111},
 207         {REG_A6XX_RBBM_CLOCK_DELAY_TP1, 0x11111111},
 208         {REG_A6XX_RBBM_CLOCK_DELAY_TP2, 0x11111111},
 209         {REG_A6XX_RBBM_CLOCK_DELAY_TP3, 0x11111111},
 210         {REG_A6XX_RBBM_CLOCK_DELAY2_TP0, 0x11111111},
 211         {REG_A6XX_RBBM_CLOCK_DELAY2_TP1, 0x11111111},
 212         {REG_A6XX_RBBM_CLOCK_DELAY2_TP2, 0x11111111},
 213         {REG_A6XX_RBBM_CLOCK_DELAY2_TP3, 0x11111111},
 214         {REG_A6XX_RBBM_CLOCK_DELAY3_TP0, 0x11111111},
 215         {REG_A6XX_RBBM_CLOCK_DELAY3_TP1, 0x11111111},
 216         {REG_A6XX_RBBM_CLOCK_DELAY3_TP2, 0x11111111},
 217         {REG_A6XX_RBBM_CLOCK_DELAY3_TP3, 0x11111111},
 218         {REG_A6XX_RBBM_CLOCK_DELAY4_TP0, 0x00011111},
 219         {REG_A6XX_RBBM_CLOCK_DELAY4_TP1, 0x00011111},
 220         {REG_A6XX_RBBM_CLOCK_DELAY4_TP2, 0x00011111},
 221         {REG_A6XX_RBBM_CLOCK_DELAY4_TP3, 0x00011111},
 222         {REG_A6XX_RBBM_CLOCK_CNTL_UCHE, 0x22222222},
 223         {REG_A6XX_RBBM_CLOCK_CNTL2_UCHE, 0x22222222},
 224         {REG_A6XX_RBBM_CLOCK_CNTL3_UCHE, 0x22222222},
 225         {REG_A6XX_RBBM_CLOCK_CNTL4_UCHE, 0x00222222},
 226         {REG_A6XX_RBBM_CLOCK_HYST_UCHE, 0x00000004},
 227         {REG_A6XX_RBBM_CLOCK_DELAY_UCHE, 0x00000002},
 228         {REG_A6XX_RBBM_CLOCK_CNTL_RB0, 0x22222222},
 229         {REG_A6XX_RBBM_CLOCK_CNTL_RB1, 0x22222222},
 230         {REG_A6XX_RBBM_CLOCK_CNTL_RB2, 0x22222222},
 231         {REG_A6XX_RBBM_CLOCK_CNTL_RB3, 0x22222222},
 232         {REG_A6XX_RBBM_CLOCK_CNTL2_RB0, 0x00002222},
 233         {REG_A6XX_RBBM_CLOCK_CNTL2_RB1, 0x00002222},
 234         {REG_A6XX_RBBM_CLOCK_CNTL2_RB2, 0x00002222},
 235         {REG_A6XX_RBBM_CLOCK_CNTL2_RB3, 0x00002222},
 236         {REG_A6XX_RBBM_CLOCK_CNTL_CCU0, 0x00002220},
 237         {REG_A6XX_RBBM_CLOCK_CNTL_CCU1, 0x00002220},
 238         {REG_A6XX_RBBM_CLOCK_CNTL_CCU2, 0x00002220},
 239         {REG_A6XX_RBBM_CLOCK_CNTL_CCU3, 0x00002220},
 240         {REG_A6XX_RBBM_CLOCK_HYST_RB_CCU0, 0x00040f00},
 241         {REG_A6XX_RBBM_CLOCK_HYST_RB_CCU1, 0x00040f00},
 242         {REG_A6XX_RBBM_CLOCK_HYST_RB_CCU2, 0x00040f00},
 243         {REG_A6XX_RBBM_CLOCK_HYST_RB_CCU3, 0x00040f00},
 244         {REG_A6XX_RBBM_CLOCK_CNTL_RAC, 0x05022022},
 245         {REG_A6XX_RBBM_CLOCK_CNTL2_RAC, 0x00005555},
 246         {REG_A6XX_RBBM_CLOCK_DELAY_RAC, 0x00000011},
 247         {REG_A6XX_RBBM_CLOCK_HYST_RAC, 0x00445044},
 248         {REG_A6XX_RBBM_CLOCK_CNTL_TSE_RAS_RBBM, 0x04222222},
 249         {REG_A6XX_RBBM_CLOCK_MODE_GPC, 0x00222222},
 250         {REG_A6XX_RBBM_CLOCK_MODE_VFD, 0x00002222},
 251         {REG_A6XX_RBBM_CLOCK_HYST_TSE_RAS_RBBM, 0x00000000},
 252         {REG_A6XX_RBBM_CLOCK_HYST_GPC, 0x04104004},
 253         {REG_A6XX_RBBM_CLOCK_HYST_VFD, 0x00000000},
 254         {REG_A6XX_RBBM_CLOCK_DELAY_HLSQ, 0x00000000},
 255         {REG_A6XX_RBBM_CLOCK_DELAY_TSE_RAS_RBBM, 0x00004000},
 256         {REG_A6XX_RBBM_CLOCK_DELAY_GPC, 0x00000200},
 257         {REG_A6XX_RBBM_CLOCK_DELAY_VFD, 0x00002222},
 258         {REG_A6XX_RBBM_CLOCK_DELAY_HLSQ_2, 0x00000002},
 259         {REG_A6XX_RBBM_CLOCK_MODE_HLSQ, 0x00002222},
 260         {REG_A6XX_RBBM_CLOCK_CNTL_GMU_GX, 0x00000222},
 261         {REG_A6XX_RBBM_CLOCK_DELAY_GMU_GX, 0x00000111},
 262         {REG_A6XX_RBBM_CLOCK_HYST_GMU_GX, 0x00000555}
 263 };
 264 
 265 static void a6xx_set_hwcg(struct msm_gpu *gpu, bool state)
 266 {
 267         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 268         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 269         struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
 270         unsigned int i;
 271         u32 val;
 272 
 273         val = gpu_read(gpu, REG_A6XX_RBBM_CLOCK_CNTL);
 274 
 275         /* Don't re-program the registers if they are already correct */
 276         if ((!state && !val) || (state && (val == 0x8aa8aa02)))
 277                 return;
 278 
 279         /* Disable SP clock before programming HWCG registers */
 280         gmu_rmw(gmu, REG_A6XX_GPU_GMU_GX_SPTPRAC_CLOCK_CONTROL, 1, 0);
 281 
 282         for (i = 0; i < ARRAY_SIZE(a6xx_hwcg); i++)
 283                 gpu_write(gpu, a6xx_hwcg[i].offset,
 284                         state ? a6xx_hwcg[i].value : 0);
 285 
 286         /* Enable SP clock */
 287         gmu_rmw(gmu, REG_A6XX_GPU_GMU_GX_SPTPRAC_CLOCK_CONTROL, 0, 1);
 288 
 289         gpu_write(gpu, REG_A6XX_RBBM_CLOCK_CNTL, state ? 0x8aa8aa02 : 0);
 290 }
 291 
 292 static int a6xx_cp_init(struct msm_gpu *gpu)
 293 {
 294         struct msm_ringbuffer *ring = gpu->rb[0];
 295 
 296         OUT_PKT7(ring, CP_ME_INIT, 8);
 297 
 298         OUT_RING(ring, 0x0000002f);
 299 
 300         /* Enable multiple hardware contexts */
 301         OUT_RING(ring, 0x00000003);
 302 
 303         /* Enable error detection */
 304         OUT_RING(ring, 0x20000000);
 305 
 306         /* Don't enable header dump */
 307         OUT_RING(ring, 0x00000000);
 308         OUT_RING(ring, 0x00000000);
 309 
 310         /* No workarounds enabled */
 311         OUT_RING(ring, 0x00000000);
 312 
 313         /* Pad rest of the cmds with 0's */
 314         OUT_RING(ring, 0x00000000);
 315         OUT_RING(ring, 0x00000000);
 316 
 317         a6xx_flush(gpu, ring);
 318         return a6xx_idle(gpu, ring) ? 0 : -EINVAL;
 319 }
 320 
 321 static int a6xx_ucode_init(struct msm_gpu *gpu)
 322 {
 323         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 324         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 325 
 326         if (!a6xx_gpu->sqe_bo) {
 327                 a6xx_gpu->sqe_bo = adreno_fw_create_bo(gpu,
 328                         adreno_gpu->fw[ADRENO_FW_SQE], &a6xx_gpu->sqe_iova);
 329 
 330                 if (IS_ERR(a6xx_gpu->sqe_bo)) {
 331                         int ret = PTR_ERR(a6xx_gpu->sqe_bo);
 332 
 333                         a6xx_gpu->sqe_bo = NULL;
 334                         DRM_DEV_ERROR(&gpu->pdev->dev,
 335                                 "Could not allocate SQE ucode: %d\n", ret);
 336 
 337                         return ret;
 338                 }
 339 
 340                 msm_gem_object_set_name(a6xx_gpu->sqe_bo, "sqefw");
 341         }
 342 
 343         gpu_write64(gpu, REG_A6XX_CP_SQE_INSTR_BASE_LO,
 344                 REG_A6XX_CP_SQE_INSTR_BASE_HI, a6xx_gpu->sqe_iova);
 345 
 346         return 0;
 347 }
 348 
 349 static int a6xx_zap_shader_init(struct msm_gpu *gpu)
 350 {
 351         static bool loaded;
 352         int ret;
 353 
 354         if (loaded)
 355                 return 0;
 356 
 357         ret = adreno_zap_shader_load(gpu, GPU_PAS_ID);
 358 
 359         loaded = !ret;
 360         return ret;
 361 }
 362 
 363 #define A6XX_INT_MASK (A6XX_RBBM_INT_0_MASK_CP_AHB_ERROR | \
 364           A6XX_RBBM_INT_0_MASK_RBBM_ATB_ASYNCFIFO_OVERFLOW | \
 365           A6XX_RBBM_INT_0_MASK_CP_HW_ERROR | \
 366           A6XX_RBBM_INT_0_MASK_CP_IB2 | \
 367           A6XX_RBBM_INT_0_MASK_CP_IB1 | \
 368           A6XX_RBBM_INT_0_MASK_CP_RB | \
 369           A6XX_RBBM_INT_0_MASK_CP_CACHE_FLUSH_TS | \
 370           A6XX_RBBM_INT_0_MASK_RBBM_ATB_BUS_OVERFLOW | \
 371           A6XX_RBBM_INT_0_MASK_RBBM_HANG_DETECT | \
 372           A6XX_RBBM_INT_0_MASK_UCHE_OOB_ACCESS | \
 373           A6XX_RBBM_INT_0_MASK_UCHE_TRAP_INTR)
 374 
 375 static int a6xx_hw_init(struct msm_gpu *gpu)
 376 {
 377         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 378         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 379         int ret;
 380 
 381         /* Make sure the GMU keeps the GPU on while we set it up */
 382         a6xx_gmu_set_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET);
 383 
 384         gpu_write(gpu, REG_A6XX_RBBM_SECVID_TSB_CNTL, 0);
 385 
 386         /*
 387          * Disable the trusted memory range - we don't actually supported secure
 388          * memory rendering at this point in time and we don't want to block off
 389          * part of the virtual memory space.
 390          */
 391         gpu_write64(gpu, REG_A6XX_RBBM_SECVID_TSB_TRUSTED_BASE_LO,
 392                 REG_A6XX_RBBM_SECVID_TSB_TRUSTED_BASE_HI, 0x00000000);
 393         gpu_write(gpu, REG_A6XX_RBBM_SECVID_TSB_TRUSTED_SIZE, 0x00000000);
 394 
 395         /* Turn on 64 bit addressing for all blocks */
 396         gpu_write(gpu, REG_A6XX_CP_ADDR_MODE_CNTL, 0x1);
 397         gpu_write(gpu, REG_A6XX_VSC_ADDR_MODE_CNTL, 0x1);
 398         gpu_write(gpu, REG_A6XX_GRAS_ADDR_MODE_CNTL, 0x1);
 399         gpu_write(gpu, REG_A6XX_RB_ADDR_MODE_CNTL, 0x1);
 400         gpu_write(gpu, REG_A6XX_PC_ADDR_MODE_CNTL, 0x1);
 401         gpu_write(gpu, REG_A6XX_HLSQ_ADDR_MODE_CNTL, 0x1);
 402         gpu_write(gpu, REG_A6XX_VFD_ADDR_MODE_CNTL, 0x1);
 403         gpu_write(gpu, REG_A6XX_VPC_ADDR_MODE_CNTL, 0x1);
 404         gpu_write(gpu, REG_A6XX_UCHE_ADDR_MODE_CNTL, 0x1);
 405         gpu_write(gpu, REG_A6XX_SP_ADDR_MODE_CNTL, 0x1);
 406         gpu_write(gpu, REG_A6XX_TPL1_ADDR_MODE_CNTL, 0x1);
 407         gpu_write(gpu, REG_A6XX_RBBM_SECVID_TSB_ADDR_MODE_CNTL, 0x1);
 408 
 409         /* enable hardware clockgating */
 410         a6xx_set_hwcg(gpu, true);
 411 
 412         /* VBIF start */
 413         gpu_write(gpu, REG_A6XX_VBIF_GATE_OFF_WRREQ_EN, 0x00000009);
 414         gpu_write(gpu, REG_A6XX_RBBM_VBIF_CLIENT_QOS_CNTL, 0x3);
 415 
 416         /* Make all blocks contribute to the GPU BUSY perf counter */
 417         gpu_write(gpu, REG_A6XX_RBBM_PERFCTR_GPU_BUSY_MASKED, 0xffffffff);
 418 
 419         /* Disable L2 bypass in the UCHE */
 420         gpu_write(gpu, REG_A6XX_UCHE_WRITE_RANGE_MAX_LO, 0xffffffc0);
 421         gpu_write(gpu, REG_A6XX_UCHE_WRITE_RANGE_MAX_HI, 0x0001ffff);
 422         gpu_write(gpu, REG_A6XX_UCHE_TRAP_BASE_LO, 0xfffff000);
 423         gpu_write(gpu, REG_A6XX_UCHE_TRAP_BASE_HI, 0x0001ffff);
 424         gpu_write(gpu, REG_A6XX_UCHE_WRITE_THRU_BASE_LO, 0xfffff000);
 425         gpu_write(gpu, REG_A6XX_UCHE_WRITE_THRU_BASE_HI, 0x0001ffff);
 426 
 427         /* Set the GMEM VA range [0x100000:0x100000 + gpu->gmem - 1] */
 428         gpu_write64(gpu, REG_A6XX_UCHE_GMEM_RANGE_MIN_LO,
 429                 REG_A6XX_UCHE_GMEM_RANGE_MIN_HI, 0x00100000);
 430 
 431         gpu_write64(gpu, REG_A6XX_UCHE_GMEM_RANGE_MAX_LO,
 432                 REG_A6XX_UCHE_GMEM_RANGE_MAX_HI,
 433                 0x00100000 + adreno_gpu->gmem - 1);
 434 
 435         gpu_write(gpu, REG_A6XX_UCHE_FILTER_CNTL, 0x804);
 436         gpu_write(gpu, REG_A6XX_UCHE_CACHE_WAYS, 0x4);
 437 
 438         gpu_write(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_2, 0x010000c0);
 439         gpu_write(gpu, REG_A6XX_CP_ROQ_THRESHOLDS_1, 0x8040362c);
 440 
 441         /* Setting the mem pool size */
 442         gpu_write(gpu, REG_A6XX_CP_MEM_POOL_SIZE, 128);
 443 
 444         /* Setting the primFifo thresholds default values */
 445         gpu_write(gpu, REG_A6XX_PC_DBG_ECO_CNTL, (0x300 << 11));
 446 
 447         /* Set the AHB default slave response to "ERROR" */
 448         gpu_write(gpu, REG_A6XX_CP_AHB_CNTL, 0x1);
 449 
 450         /* Turn on performance counters */
 451         gpu_write(gpu, REG_A6XX_RBBM_PERFCTR_CNTL, 0x1);
 452 
 453         /* Select CP0 to always count cycles */
 454         gpu_write(gpu, REG_A6XX_CP_PERFCTR_CP_SEL_0, PERF_CP_ALWAYS_COUNT);
 455 
 456         gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL, 2 << 1);
 457         gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, 2 << 1);
 458         gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, 2 << 1);
 459         gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, 2 << 21);
 460 
 461         /* Enable fault detection */
 462         gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL,
 463                 (1 << 30) | 0x1fffff);
 464 
 465         gpu_write(gpu, REG_A6XX_UCHE_CLIENT_PF, 1);
 466 
 467         /* Protect registers from the CP */
 468         gpu_write(gpu, REG_A6XX_CP_PROTECT_CNTL, 0x00000003);
 469 
 470         gpu_write(gpu, REG_A6XX_CP_PROTECT(0),
 471                 A6XX_PROTECT_RDONLY(0x600, 0x51));
 472         gpu_write(gpu, REG_A6XX_CP_PROTECT(1), A6XX_PROTECT_RW(0xae50, 0x2));
 473         gpu_write(gpu, REG_A6XX_CP_PROTECT(2), A6XX_PROTECT_RW(0x9624, 0x13));
 474         gpu_write(gpu, REG_A6XX_CP_PROTECT(3), A6XX_PROTECT_RW(0x8630, 0x8));
 475         gpu_write(gpu, REG_A6XX_CP_PROTECT(4), A6XX_PROTECT_RW(0x9e70, 0x1));
 476         gpu_write(gpu, REG_A6XX_CP_PROTECT(5), A6XX_PROTECT_RW(0x9e78, 0x187));
 477         gpu_write(gpu, REG_A6XX_CP_PROTECT(6), A6XX_PROTECT_RW(0xf000, 0x810));
 478         gpu_write(gpu, REG_A6XX_CP_PROTECT(7),
 479                 A6XX_PROTECT_RDONLY(0xfc00, 0x3));
 480         gpu_write(gpu, REG_A6XX_CP_PROTECT(8), A6XX_PROTECT_RW(0x50e, 0x0));
 481         gpu_write(gpu, REG_A6XX_CP_PROTECT(9), A6XX_PROTECT_RDONLY(0x50f, 0x0));
 482         gpu_write(gpu, REG_A6XX_CP_PROTECT(10), A6XX_PROTECT_RW(0x510, 0x0));
 483         gpu_write(gpu, REG_A6XX_CP_PROTECT(11),
 484                 A6XX_PROTECT_RDONLY(0x0, 0x4f9));
 485         gpu_write(gpu, REG_A6XX_CP_PROTECT(12),
 486                 A6XX_PROTECT_RDONLY(0x501, 0xa));
 487         gpu_write(gpu, REG_A6XX_CP_PROTECT(13),
 488                 A6XX_PROTECT_RDONLY(0x511, 0x44));
 489         gpu_write(gpu, REG_A6XX_CP_PROTECT(14), A6XX_PROTECT_RW(0xe00, 0xe));
 490         gpu_write(gpu, REG_A6XX_CP_PROTECT(15), A6XX_PROTECT_RW(0x8e00, 0x0));
 491         gpu_write(gpu, REG_A6XX_CP_PROTECT(16), A6XX_PROTECT_RW(0x8e50, 0xf));
 492         gpu_write(gpu, REG_A6XX_CP_PROTECT(17), A6XX_PROTECT_RW(0xbe02, 0x0));
 493         gpu_write(gpu, REG_A6XX_CP_PROTECT(18),
 494                 A6XX_PROTECT_RW(0xbe20, 0x11f3));
 495         gpu_write(gpu, REG_A6XX_CP_PROTECT(19), A6XX_PROTECT_RW(0x800, 0x82));
 496         gpu_write(gpu, REG_A6XX_CP_PROTECT(20), A6XX_PROTECT_RW(0x8a0, 0x8));
 497         gpu_write(gpu, REG_A6XX_CP_PROTECT(21), A6XX_PROTECT_RW(0x8ab, 0x19));
 498         gpu_write(gpu, REG_A6XX_CP_PROTECT(22), A6XX_PROTECT_RW(0x900, 0x4d));
 499         gpu_write(gpu, REG_A6XX_CP_PROTECT(23), A6XX_PROTECT_RW(0x98d, 0x76));
 500         gpu_write(gpu, REG_A6XX_CP_PROTECT(24),
 501                         A6XX_PROTECT_RDONLY(0x980, 0x4));
 502         gpu_write(gpu, REG_A6XX_CP_PROTECT(25), A6XX_PROTECT_RW(0xa630, 0x0));
 503 
 504         /* Enable interrupts */
 505         gpu_write(gpu, REG_A6XX_RBBM_INT_0_MASK, A6XX_INT_MASK);
 506 
 507         ret = adreno_hw_init(gpu);
 508         if (ret)
 509                 goto out;
 510 
 511         ret = a6xx_ucode_init(gpu);
 512         if (ret)
 513                 goto out;
 514 
 515         /* Always come up on rb 0 */
 516         a6xx_gpu->cur_ring = gpu->rb[0];
 517 
 518         /* Enable the SQE_to start the CP engine */
 519         gpu_write(gpu, REG_A6XX_CP_SQE_CNTL, 1);
 520 
 521         ret = a6xx_cp_init(gpu);
 522         if (ret)
 523                 goto out;
 524 
 525         /*
 526          * Try to load a zap shader into the secure world. If successful
 527          * we can use the CP to switch out of secure mode. If not then we
 528          * have no resource but to try to switch ourselves out manually. If we
 529          * guessed wrong then access to the RBBM_SECVID_TRUST_CNTL register will
 530          * be blocked and a permissions violation will soon follow.
 531          */
 532         ret = a6xx_zap_shader_init(gpu);
 533         if (!ret) {
 534                 OUT_PKT7(gpu->rb[0], CP_SET_SECURE_MODE, 1);
 535                 OUT_RING(gpu->rb[0], 0x00000000);
 536 
 537                 a6xx_flush(gpu, gpu->rb[0]);
 538                 if (!a6xx_idle(gpu, gpu->rb[0]))
 539                         return -EINVAL;
 540         } else if (ret == -ENODEV) {
 541                 /*
 542                  * This device does not use zap shader (but print a warning
 543                  * just in case someone got their dt wrong.. hopefully they
 544                  * have a debug UART to realize the error of their ways...
 545                  * if you mess this up you are about to crash horribly)
 546                  */
 547                 dev_warn_once(gpu->dev->dev,
 548                         "Zap shader not enabled - using SECVID_TRUST_CNTL instead\n");
 549                 gpu_write(gpu, REG_A6XX_RBBM_SECVID_TRUST_CNTL, 0x0);
 550                 ret = 0;
 551         } else {
 552                 return ret;
 553         }
 554 
 555 out:
 556         /*
 557          * Tell the GMU that we are done touching the GPU and it can start power
 558          * management
 559          */
 560         a6xx_gmu_clear_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET);
 561 
 562         /* Take the GMU out of its special boot mode */
 563         a6xx_gmu_clear_oob(&a6xx_gpu->gmu, GMU_OOB_BOOT_SLUMBER);
 564 
 565         return ret;
 566 }
 567 
 568 static void a6xx_dump(struct msm_gpu *gpu)
 569 {
 570         DRM_DEV_INFO(&gpu->pdev->dev, "status:   %08x\n",
 571                         gpu_read(gpu, REG_A6XX_RBBM_STATUS));
 572         adreno_dump(gpu);
 573 }
 574 
 575 #define VBIF_RESET_ACK_TIMEOUT  100
 576 #define VBIF_RESET_ACK_MASK     0x00f0
 577 
 578 static void a6xx_recover(struct msm_gpu *gpu)
 579 {
 580         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 581         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 582         int i;
 583 
 584         adreno_dump_info(gpu);
 585 
 586         for (i = 0; i < 8; i++)
 587                 DRM_DEV_INFO(&gpu->pdev->dev, "CP_SCRATCH_REG%d: %u\n", i,
 588                         gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(i)));
 589 
 590         if (hang_debug)
 591                 a6xx_dump(gpu);
 592 
 593         /*
 594          * Turn off keep alive that might have been enabled by the hang
 595          * interrupt
 596          */
 597         gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_GMU_PWR_COL_KEEPALIVE, 0);
 598 
 599         gpu->funcs->pm_suspend(gpu);
 600         gpu->funcs->pm_resume(gpu);
 601 
 602         msm_gpu_hw_init(gpu);
 603 }
 604 
 605 static int a6xx_fault_handler(void *arg, unsigned long iova, int flags)
 606 {
 607         struct msm_gpu *gpu = arg;
 608 
 609         pr_warn_ratelimited("*** gpu fault: iova=%08lx, flags=%d (%u,%u,%u,%u)\n",
 610                         iova, flags,
 611                         gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(4)),
 612                         gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(5)),
 613                         gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(6)),
 614                         gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(7)));
 615 
 616         return -EFAULT;
 617 }
 618 
 619 static void a6xx_cp_hw_err_irq(struct msm_gpu *gpu)
 620 {
 621         u32 status = gpu_read(gpu, REG_A6XX_CP_INTERRUPT_STATUS);
 622 
 623         if (status & A6XX_CP_INT_CP_OPCODE_ERROR) {
 624                 u32 val;
 625 
 626                 gpu_write(gpu, REG_A6XX_CP_SQE_STAT_ADDR, 1);
 627                 val = gpu_read(gpu, REG_A6XX_CP_SQE_STAT_DATA);
 628                 dev_err_ratelimited(&gpu->pdev->dev,
 629                         "CP | opcode error | possible opcode=0x%8.8X\n",
 630                         val);
 631         }
 632 
 633         if (status & A6XX_CP_INT_CP_UCODE_ERROR)
 634                 dev_err_ratelimited(&gpu->pdev->dev,
 635                         "CP ucode error interrupt\n");
 636 
 637         if (status & A6XX_CP_INT_CP_HW_FAULT_ERROR)
 638                 dev_err_ratelimited(&gpu->pdev->dev, "CP | HW fault | status=0x%8.8X\n",
 639                         gpu_read(gpu, REG_A6XX_CP_HW_FAULT));
 640 
 641         if (status & A6XX_CP_INT_CP_REGISTER_PROTECTION_ERROR) {
 642                 u32 val = gpu_read(gpu, REG_A6XX_CP_PROTECT_STATUS);
 643 
 644                 dev_err_ratelimited(&gpu->pdev->dev,
 645                         "CP | protected mode error | %s | addr=0x%8.8X | status=0x%8.8X\n",
 646                         val & (1 << 20) ? "READ" : "WRITE",
 647                         (val & 0x3ffff), val);
 648         }
 649 
 650         if (status & A6XX_CP_INT_CP_AHB_ERROR)
 651                 dev_err_ratelimited(&gpu->pdev->dev, "CP AHB error interrupt\n");
 652 
 653         if (status & A6XX_CP_INT_CP_VSD_PARITY_ERROR)
 654                 dev_err_ratelimited(&gpu->pdev->dev, "CP VSD decoder parity error\n");
 655 
 656         if (status & A6XX_CP_INT_CP_ILLEGAL_INSTR_ERROR)
 657                 dev_err_ratelimited(&gpu->pdev->dev, "CP illegal instruction error\n");
 658 
 659 }
 660 
 661 static void a6xx_fault_detect_irq(struct msm_gpu *gpu)
 662 {
 663         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 664         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 665         struct drm_device *dev = gpu->dev;
 666         struct msm_drm_private *priv = dev->dev_private;
 667         struct msm_ringbuffer *ring = gpu->funcs->active_ring(gpu);
 668 
 669         /*
 670          * Force the GPU to stay on until after we finish
 671          * collecting information
 672          */
 673         gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_GMU_PWR_COL_KEEPALIVE, 1);
 674 
 675         DRM_DEV_ERROR(&gpu->pdev->dev,
 676                 "gpu fault ring %d fence %x status %8.8X rb %4.4x/%4.4x ib1 %16.16llX/%4.4x ib2 %16.16llX/%4.4x\n",
 677                 ring ? ring->id : -1, ring ? ring->seqno : 0,
 678                 gpu_read(gpu, REG_A6XX_RBBM_STATUS),
 679                 gpu_read(gpu, REG_A6XX_CP_RB_RPTR),
 680                 gpu_read(gpu, REG_A6XX_CP_RB_WPTR),
 681                 gpu_read64(gpu, REG_A6XX_CP_IB1_BASE, REG_A6XX_CP_IB1_BASE_HI),
 682                 gpu_read(gpu, REG_A6XX_CP_IB1_REM_SIZE),
 683                 gpu_read64(gpu, REG_A6XX_CP_IB2_BASE, REG_A6XX_CP_IB2_BASE_HI),
 684                 gpu_read(gpu, REG_A6XX_CP_IB2_REM_SIZE));
 685 
 686         /* Turn off the hangcheck timer to keep it from bothering us */
 687         del_timer(&gpu->hangcheck_timer);
 688 
 689         queue_work(priv->wq, &gpu->recover_work);
 690 }
 691 
 692 static irqreturn_t a6xx_irq(struct msm_gpu *gpu)
 693 {
 694         u32 status = gpu_read(gpu, REG_A6XX_RBBM_INT_0_STATUS);
 695 
 696         gpu_write(gpu, REG_A6XX_RBBM_INT_CLEAR_CMD, status);
 697 
 698         if (status & A6XX_RBBM_INT_0_MASK_RBBM_HANG_DETECT)
 699                 a6xx_fault_detect_irq(gpu);
 700 
 701         if (status & A6XX_RBBM_INT_0_MASK_CP_AHB_ERROR)
 702                 dev_err_ratelimited(&gpu->pdev->dev, "CP | AHB bus error\n");
 703 
 704         if (status & A6XX_RBBM_INT_0_MASK_CP_HW_ERROR)
 705                 a6xx_cp_hw_err_irq(gpu);
 706 
 707         if (status & A6XX_RBBM_INT_0_MASK_RBBM_ATB_ASYNCFIFO_OVERFLOW)
 708                 dev_err_ratelimited(&gpu->pdev->dev, "RBBM | ATB ASYNC overflow\n");
 709 
 710         if (status & A6XX_RBBM_INT_0_MASK_RBBM_ATB_BUS_OVERFLOW)
 711                 dev_err_ratelimited(&gpu->pdev->dev, "RBBM | ATB bus overflow\n");
 712 
 713         if (status & A6XX_RBBM_INT_0_MASK_UCHE_OOB_ACCESS)
 714                 dev_err_ratelimited(&gpu->pdev->dev, "UCHE | Out of bounds access\n");
 715 
 716         if (status & A6XX_RBBM_INT_0_MASK_CP_CACHE_FLUSH_TS)
 717                 msm_gpu_retire(gpu);
 718 
 719         return IRQ_HANDLED;
 720 }
 721 
 722 static const u32 a6xx_register_offsets[REG_ADRENO_REGISTER_MAX] = {
 723         REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_BASE, REG_A6XX_CP_RB_BASE),
 724         REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_BASE_HI, REG_A6XX_CP_RB_BASE_HI),
 725         REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_RPTR_ADDR,
 726                 REG_A6XX_CP_RB_RPTR_ADDR_LO),
 727         REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_RPTR_ADDR_HI,
 728                 REG_A6XX_CP_RB_RPTR_ADDR_HI),
 729         REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_RPTR, REG_A6XX_CP_RB_RPTR),
 730         REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_WPTR, REG_A6XX_CP_RB_WPTR),
 731         REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_CNTL, REG_A6XX_CP_RB_CNTL),
 732 };
 733 
 734 static int a6xx_pm_resume(struct msm_gpu *gpu)
 735 {
 736         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 737         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 738         int ret;
 739 
 740         gpu->needs_hw_init = true;
 741 
 742         ret = a6xx_gmu_resume(a6xx_gpu);
 743         if (ret)
 744                 return ret;
 745 
 746         msm_gpu_resume_devfreq(gpu);
 747 
 748         return 0;
 749 }
 750 
 751 static int a6xx_pm_suspend(struct msm_gpu *gpu)
 752 {
 753         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 754         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 755 
 756         devfreq_suspend_device(gpu->devfreq.devfreq);
 757 
 758         return a6xx_gmu_stop(a6xx_gpu);
 759 }
 760 
 761 static int a6xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value)
 762 {
 763         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 764         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 765 
 766         /* Force the GPU power on so we can read this register */
 767         a6xx_gmu_set_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET);
 768 
 769         *value = gpu_read64(gpu, REG_A6XX_RBBM_PERFCTR_CP_0_LO,
 770                 REG_A6XX_RBBM_PERFCTR_CP_0_HI);
 771 
 772         a6xx_gmu_clear_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET);
 773         return 0;
 774 }
 775 
 776 static struct msm_ringbuffer *a6xx_active_ring(struct msm_gpu *gpu)
 777 {
 778         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 779         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 780 
 781         return a6xx_gpu->cur_ring;
 782 }
 783 
 784 static void a6xx_destroy(struct msm_gpu *gpu)
 785 {
 786         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 787         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 788 
 789         if (a6xx_gpu->sqe_bo) {
 790                 msm_gem_unpin_iova(a6xx_gpu->sqe_bo, gpu->aspace);
 791                 drm_gem_object_put_unlocked(a6xx_gpu->sqe_bo);
 792         }
 793 
 794         a6xx_gmu_remove(a6xx_gpu);
 795 
 796         adreno_gpu_cleanup(adreno_gpu);
 797         kfree(a6xx_gpu);
 798 }
 799 
 800 static unsigned long a6xx_gpu_busy(struct msm_gpu *gpu)
 801 {
 802         struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 803         struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 804         u64 busy_cycles, busy_time;
 805 
 806         busy_cycles = gmu_read64(&a6xx_gpu->gmu,
 807                         REG_A6XX_GMU_CX_GMU_POWER_COUNTER_XOCLK_0_L,
 808                         REG_A6XX_GMU_CX_GMU_POWER_COUNTER_XOCLK_0_H);
 809 
 810         busy_time = (busy_cycles - gpu->devfreq.busy_cycles) * 10;
 811         do_div(busy_time, 192);
 812 
 813         gpu->devfreq.busy_cycles = busy_cycles;
 814 
 815         if (WARN_ON(busy_time > ~0LU))
 816                 return ~0LU;
 817 
 818         return (unsigned long)busy_time;
 819 }
 820 
 821 static const struct adreno_gpu_funcs funcs = {
 822         .base = {
 823                 .get_param = adreno_get_param,
 824                 .hw_init = a6xx_hw_init,
 825                 .pm_suspend = a6xx_pm_suspend,
 826                 .pm_resume = a6xx_pm_resume,
 827                 .recover = a6xx_recover,
 828                 .submit = a6xx_submit,
 829                 .flush = a6xx_flush,
 830                 .active_ring = a6xx_active_ring,
 831                 .irq = a6xx_irq,
 832                 .destroy = a6xx_destroy,
 833 #if defined(CONFIG_DRM_MSM_GPU_STATE)
 834                 .show = a6xx_show,
 835 #endif
 836                 .gpu_busy = a6xx_gpu_busy,
 837                 .gpu_get_freq = a6xx_gmu_get_freq,
 838                 .gpu_set_freq = a6xx_gmu_set_freq,
 839 #if defined(CONFIG_DRM_MSM_GPU_STATE)
 840                 .gpu_state_get = a6xx_gpu_state_get,
 841                 .gpu_state_put = a6xx_gpu_state_put,
 842 #endif
 843         },
 844         .get_timestamp = a6xx_get_timestamp,
 845 };
 846 
 847 struct msm_gpu *a6xx_gpu_init(struct drm_device *dev)
 848 {
 849         struct msm_drm_private *priv = dev->dev_private;
 850         struct platform_device *pdev = priv->gpu_pdev;
 851         struct device_node *node;
 852         struct a6xx_gpu *a6xx_gpu;
 853         struct adreno_gpu *adreno_gpu;
 854         struct msm_gpu *gpu;
 855         int ret;
 856 
 857         a6xx_gpu = kzalloc(sizeof(*a6xx_gpu), GFP_KERNEL);
 858         if (!a6xx_gpu)
 859                 return ERR_PTR(-ENOMEM);
 860 
 861         adreno_gpu = &a6xx_gpu->base;
 862         gpu = &adreno_gpu->base;
 863 
 864         adreno_gpu->registers = NULL;
 865         adreno_gpu->reg_offsets = a6xx_register_offsets;
 866 
 867         ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 1);
 868         if (ret) {
 869                 a6xx_destroy(&(a6xx_gpu->base.base));
 870                 return ERR_PTR(ret);
 871         }
 872 
 873         /* Check if there is a GMU phandle and set it up */
 874         node = of_parse_phandle(pdev->dev.of_node, "qcom,gmu", 0);
 875 
 876         /* FIXME: How do we gracefully handle this? */
 877         BUG_ON(!node);
 878 
 879         ret = a6xx_gmu_init(a6xx_gpu, node);
 880         if (ret) {
 881                 a6xx_destroy(&(a6xx_gpu->base.base));
 882                 return ERR_PTR(ret);
 883         }
 884 
 885         if (gpu->aspace)
 886                 msm_mmu_set_fault_handler(gpu->aspace->mmu, gpu,
 887                                 a6xx_fault_handler);
 888 
 889         return gpu;
 890 }