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 { 541 /* Print a warning so if we die, we know why */ 542 dev_warn_once(gpu->dev->dev, 543 "Zap shader not enabled - using SECVID_TRUST_CNTL instead\n"); 544 gpu_write(gpu, REG_A6XX_RBBM_SECVID_TRUST_CNTL, 0x0); 545 ret = 0; 546 } 547 548 out: 549 /* 550 * Tell the GMU that we are done touching the GPU and it can start power 551 * management 552 */ 553 a6xx_gmu_clear_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET); 554 555 /* Take the GMU out of its special boot mode */ 556 a6xx_gmu_clear_oob(&a6xx_gpu->gmu, GMU_OOB_BOOT_SLUMBER); 557 558 return ret; 559 } 560 561 static void a6xx_dump(struct msm_gpu *gpu) 562 { 563 DRM_DEV_INFO(&gpu->pdev->dev, "status: %08x\n", 564 gpu_read(gpu, REG_A6XX_RBBM_STATUS)); 565 adreno_dump(gpu); 566 } 567 568 #define VBIF_RESET_ACK_TIMEOUT 100 569 #define VBIF_RESET_ACK_MASK 0x00f0 570 571 static void a6xx_recover(struct msm_gpu *gpu) 572 { 573 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 574 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 575 int i; 576 577 adreno_dump_info(gpu); 578 579 for (i = 0; i < 8; i++) 580 DRM_DEV_INFO(&gpu->pdev->dev, "CP_SCRATCH_REG%d: %u\n", i, 581 gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(i))); 582 583 if (hang_debug) 584 a6xx_dump(gpu); 585 586 /* 587 * Turn off keep alive that might have been enabled by the hang 588 * interrupt 589 */ 590 gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_GMU_PWR_COL_KEEPALIVE, 0); 591 592 gpu->funcs->pm_suspend(gpu); 593 gpu->funcs->pm_resume(gpu); 594 595 msm_gpu_hw_init(gpu); 596 } 597 598 static int a6xx_fault_handler(void *arg, unsigned long iova, int flags) 599 { 600 struct msm_gpu *gpu = arg; 601 602 pr_warn_ratelimited("*** gpu fault: iova=%08lx, flags=%d (%u,%u,%u,%u)\n", 603 iova, flags, 604 gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(4)), 605 gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(5)), 606 gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(6)), 607 gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(7))); 608 609 return -EFAULT; 610 } 611 612 static void a6xx_cp_hw_err_irq(struct msm_gpu *gpu) 613 { 614 u32 status = gpu_read(gpu, REG_A6XX_CP_INTERRUPT_STATUS); 615 616 if (status & A6XX_CP_INT_CP_OPCODE_ERROR) { 617 u32 val; 618 619 gpu_write(gpu, REG_A6XX_CP_SQE_STAT_ADDR, 1); 620 val = gpu_read(gpu, REG_A6XX_CP_SQE_STAT_DATA); 621 dev_err_ratelimited(&gpu->pdev->dev, 622 "CP | opcode error | possible opcode=0x%8.8X\n", 623 val); 624 } 625 626 if (status & A6XX_CP_INT_CP_UCODE_ERROR) 627 dev_err_ratelimited(&gpu->pdev->dev, 628 "CP ucode error interrupt\n"); 629 630 if (status & A6XX_CP_INT_CP_HW_FAULT_ERROR) 631 dev_err_ratelimited(&gpu->pdev->dev, "CP | HW fault | status=0x%8.8X\n", 632 gpu_read(gpu, REG_A6XX_CP_HW_FAULT)); 633 634 if (status & A6XX_CP_INT_CP_REGISTER_PROTECTION_ERROR) { 635 u32 val = gpu_read(gpu, REG_A6XX_CP_PROTECT_STATUS); 636 637 dev_err_ratelimited(&gpu->pdev->dev, 638 "CP | protected mode error | %s | addr=0x%8.8X | status=0x%8.8X\n", 639 val & (1 << 20) ? "READ" : "WRITE", 640 (val & 0x3ffff), val); 641 } 642 643 if (status & A6XX_CP_INT_CP_AHB_ERROR) 644 dev_err_ratelimited(&gpu->pdev->dev, "CP AHB error interrupt\n"); 645 646 if (status & A6XX_CP_INT_CP_VSD_PARITY_ERROR) 647 dev_err_ratelimited(&gpu->pdev->dev, "CP VSD decoder parity error\n"); 648 649 if (status & A6XX_CP_INT_CP_ILLEGAL_INSTR_ERROR) 650 dev_err_ratelimited(&gpu->pdev->dev, "CP illegal instruction error\n"); 651 652 } 653 654 static void a6xx_fault_detect_irq(struct msm_gpu *gpu) 655 { 656 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 657 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 658 struct drm_device *dev = gpu->dev; 659 struct msm_drm_private *priv = dev->dev_private; 660 struct msm_ringbuffer *ring = gpu->funcs->active_ring(gpu); 661 662 /* 663 * Force the GPU to stay on until after we finish 664 * collecting information 665 */ 666 gmu_write(&a6xx_gpu->gmu, REG_A6XX_GMU_GMU_PWR_COL_KEEPALIVE, 1); 667 668 DRM_DEV_ERROR(&gpu->pdev->dev, 669 "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", 670 ring ? ring->id : -1, ring ? ring->seqno : 0, 671 gpu_read(gpu, REG_A6XX_RBBM_STATUS), 672 gpu_read(gpu, REG_A6XX_CP_RB_RPTR), 673 gpu_read(gpu, REG_A6XX_CP_RB_WPTR), 674 gpu_read64(gpu, REG_A6XX_CP_IB1_BASE, REG_A6XX_CP_IB1_BASE_HI), 675 gpu_read(gpu, REG_A6XX_CP_IB1_REM_SIZE), 676 gpu_read64(gpu, REG_A6XX_CP_IB2_BASE, REG_A6XX_CP_IB2_BASE_HI), 677 gpu_read(gpu, REG_A6XX_CP_IB2_REM_SIZE)); 678 679 /* Turn off the hangcheck timer to keep it from bothering us */ 680 del_timer(&gpu->hangcheck_timer); 681 682 queue_work(priv->wq, &gpu->recover_work); 683 } 684 685 static irqreturn_t a6xx_irq(struct msm_gpu *gpu) 686 { 687 u32 status = gpu_read(gpu, REG_A6XX_RBBM_INT_0_STATUS); 688 689 gpu_write(gpu, REG_A6XX_RBBM_INT_CLEAR_CMD, status); 690 691 if (status & A6XX_RBBM_INT_0_MASK_RBBM_HANG_DETECT) 692 a6xx_fault_detect_irq(gpu); 693 694 if (status & A6XX_RBBM_INT_0_MASK_CP_AHB_ERROR) 695 dev_err_ratelimited(&gpu->pdev->dev, "CP | AHB bus error\n"); 696 697 if (status & A6XX_RBBM_INT_0_MASK_CP_HW_ERROR) 698 a6xx_cp_hw_err_irq(gpu); 699 700 if (status & A6XX_RBBM_INT_0_MASK_RBBM_ATB_ASYNCFIFO_OVERFLOW) 701 dev_err_ratelimited(&gpu->pdev->dev, "RBBM | ATB ASYNC overflow\n"); 702 703 if (status & A6XX_RBBM_INT_0_MASK_RBBM_ATB_BUS_OVERFLOW) 704 dev_err_ratelimited(&gpu->pdev->dev, "RBBM | ATB bus overflow\n"); 705 706 if (status & A6XX_RBBM_INT_0_MASK_UCHE_OOB_ACCESS) 707 dev_err_ratelimited(&gpu->pdev->dev, "UCHE | Out of bounds access\n"); 708 709 if (status & A6XX_RBBM_INT_0_MASK_CP_CACHE_FLUSH_TS) 710 msm_gpu_retire(gpu); 711 712 return IRQ_HANDLED; 713 } 714 715 static const u32 a6xx_register_offsets[REG_ADRENO_REGISTER_MAX] = { 716 REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_BASE, REG_A6XX_CP_RB_BASE), 717 REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_BASE_HI, REG_A6XX_CP_RB_BASE_HI), 718 REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_RPTR_ADDR, 719 REG_A6XX_CP_RB_RPTR_ADDR_LO), 720 REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_RPTR_ADDR_HI, 721 REG_A6XX_CP_RB_RPTR_ADDR_HI), 722 REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_RPTR, REG_A6XX_CP_RB_RPTR), 723 REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_WPTR, REG_A6XX_CP_RB_WPTR), 724 REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_CNTL, REG_A6XX_CP_RB_CNTL), 725 }; 726 727 static int a6xx_pm_resume(struct msm_gpu *gpu) 728 { 729 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 730 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 731 int ret; 732 733 gpu->needs_hw_init = true; 734 735 ret = a6xx_gmu_resume(a6xx_gpu); 736 if (ret) 737 return ret; 738 739 msm_gpu_resume_devfreq(gpu); 740 741 return 0; 742 } 743 744 static int a6xx_pm_suspend(struct msm_gpu *gpu) 745 { 746 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 747 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 748 749 devfreq_suspend_device(gpu->devfreq.devfreq); 750 751 return a6xx_gmu_stop(a6xx_gpu); 752 } 753 754 static int a6xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value) 755 { 756 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 757 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 758 759 /* Force the GPU power on so we can read this register */ 760 a6xx_gmu_set_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET); 761 762 *value = gpu_read64(gpu, REG_A6XX_RBBM_PERFCTR_CP_0_LO, 763 REG_A6XX_RBBM_PERFCTR_CP_0_HI); 764 765 a6xx_gmu_clear_oob(&a6xx_gpu->gmu, GMU_OOB_GPU_SET); 766 return 0; 767 } 768 769 static struct msm_ringbuffer *a6xx_active_ring(struct msm_gpu *gpu) 770 { 771 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 772 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 773 774 return a6xx_gpu->cur_ring; 775 } 776 777 static void a6xx_destroy(struct msm_gpu *gpu) 778 { 779 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 780 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 781 782 if (a6xx_gpu->sqe_bo) { 783 msm_gem_unpin_iova(a6xx_gpu->sqe_bo, gpu->aspace); 784 drm_gem_object_put_unlocked(a6xx_gpu->sqe_bo); 785 } 786 787 a6xx_gmu_remove(a6xx_gpu); 788 789 adreno_gpu_cleanup(adreno_gpu); 790 kfree(a6xx_gpu); 791 } 792 793 static unsigned long a6xx_gpu_busy(struct msm_gpu *gpu) 794 { 795 struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); 796 struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); 797 u64 busy_cycles, busy_time; 798 799 busy_cycles = gmu_read64(&a6xx_gpu->gmu, 800 REG_A6XX_GMU_CX_GMU_POWER_COUNTER_XOCLK_0_L, 801 REG_A6XX_GMU_CX_GMU_POWER_COUNTER_XOCLK_0_H); 802 803 busy_time = (busy_cycles - gpu->devfreq.busy_cycles) * 10; 804 do_div(busy_time, 192); 805 806 gpu->devfreq.busy_cycles = busy_cycles; 807 808 if (WARN_ON(busy_time > ~0LU)) 809 return ~0LU; 810 811 return (unsigned long)busy_time; 812 } 813 814 static const struct adreno_gpu_funcs funcs = { 815 .base = { 816 .get_param = adreno_get_param, 817 .hw_init = a6xx_hw_init, 818 .pm_suspend = a6xx_pm_suspend, 819 .pm_resume = a6xx_pm_resume, 820 .recover = a6xx_recover, 821 .submit = a6xx_submit, 822 .flush = a6xx_flush, 823 .active_ring = a6xx_active_ring, 824 .irq = a6xx_irq, 825 .destroy = a6xx_destroy, 826 #if defined(CONFIG_DRM_MSM_GPU_STATE) 827 .show = a6xx_show, 828 #endif 829 .gpu_busy = a6xx_gpu_busy, 830 .gpu_get_freq = a6xx_gmu_get_freq, 831 .gpu_set_freq = a6xx_gmu_set_freq, 832 #if defined(CONFIG_DRM_MSM_GPU_STATE) 833 .gpu_state_get = a6xx_gpu_state_get, 834 .gpu_state_put = a6xx_gpu_state_put, 835 #endif 836 }, 837 .get_timestamp = a6xx_get_timestamp, 838 }; 839 840 struct msm_gpu *a6xx_gpu_init(struct drm_device *dev) 841 { 842 struct msm_drm_private *priv = dev->dev_private; 843 struct platform_device *pdev = priv->gpu_pdev; 844 struct device_node *node; 845 struct a6xx_gpu *a6xx_gpu; 846 struct adreno_gpu *adreno_gpu; 847 struct msm_gpu *gpu; 848 int ret; 849 850 a6xx_gpu = kzalloc(sizeof(*a6xx_gpu), GFP_KERNEL); 851 if (!a6xx_gpu) 852 return ERR_PTR(-ENOMEM); 853 854 adreno_gpu = &a6xx_gpu->base; 855 gpu = &adreno_gpu->base; 856 857 adreno_gpu->registers = NULL; 858 adreno_gpu->reg_offsets = a6xx_register_offsets; 859 860 ret = adreno_gpu_init(dev, pdev, adreno_gpu, &funcs, 1); 861 if (ret) { 862 a6xx_destroy(&(a6xx_gpu->base.base)); 863 return ERR_PTR(ret); 864 } 865 866 /* Check if there is a GMU phandle and set it up */ 867 node = of_parse_phandle(pdev->dev.of_node, "qcom,gmu", 0); 868 869 /* FIXME: How do we gracefully handle this? */ 870 BUG_ON(!node); 871 872 ret = a6xx_gmu_init(a6xx_gpu, node); 873 if (ret) { 874 a6xx_destroy(&(a6xx_gpu->base.base)); 875 return ERR_PTR(ret); 876 } 877 878 if (gpu->aspace) 879 msm_mmu_set_fault_handler(gpu->aspace->mmu, gpu, 880 a6xx_fault_handler); 881 882 return gpu; 883 } 884