1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /* Copyright 2017-2019 Qiang Yu <[email protected]> */ 3 4 #include <linux/regulator/consumer.h> 5 #include <linux/reset.h> 6 #include <linux/clk.h> 7 #include <linux/dma-mapping.h> 8 #include <linux/platform_device.h> 9 10 #include "lima_device.h" 11 #include "lima_gp.h" 12 #include "lima_pp.h" 13 #include "lima_mmu.h" 14 #include "lima_pmu.h" 15 #include "lima_l2_cache.h" 16 #include "lima_dlbu.h" 17 #include "lima_bcast.h" 18 #include "lima_vm.h" 19 20 struct lima_ip_desc { 21 char *name; 22 char *irq_name; 23 bool must_have[lima_gpu_num]; 24 int offset[lima_gpu_num]; 25 26 int (*init)(struct lima_ip *ip); 27 void (*fini)(struct lima_ip *ip); 28 int (*resume)(struct lima_ip *ip); 29 void (*suspend)(struct lima_ip *ip); 30 }; 31 32 #define LIMA_IP_DESC(ipname, mst0, mst1, off0, off1, func, irq) \ 33 [lima_ip_##ipname] = { \ 34 .name = #ipname, \ 35 .irq_name = irq, \ 36 .must_have = { \ 37 [lima_gpu_mali400] = mst0, \ 38 [lima_gpu_mali450] = mst1, \ 39 }, \ 40 .offset = { \ 41 [lima_gpu_mali400] = off0, \ 42 [lima_gpu_mali450] = off1, \ 43 }, \ 44 .init = lima_##func##_init, \ 45 .fini = lima_##func##_fini, \ 46 .resume = lima_##func##_resume, \ 47 .suspend = lima_##func##_suspend, \ 48 } 49 50 static struct lima_ip_desc lima_ip_desc[lima_ip_num] = { 51 LIMA_IP_DESC(pmu, false, false, 0x02000, 0x02000, pmu, "pmu"), 52 LIMA_IP_DESC(l2_cache0, true, true, 0x01000, 0x10000, l2_cache, NULL), 53 LIMA_IP_DESC(l2_cache1, false, true, -1, 0x01000, l2_cache, NULL), 54 LIMA_IP_DESC(l2_cache2, false, false, -1, 0x11000, l2_cache, NULL), 55 LIMA_IP_DESC(gp, true, true, 0x00000, 0x00000, gp, "gp"), 56 LIMA_IP_DESC(pp0, true, true, 0x08000, 0x08000, pp, "pp0"), 57 LIMA_IP_DESC(pp1, false, false, 0x0A000, 0x0A000, pp, "pp1"), 58 LIMA_IP_DESC(pp2, false, false, 0x0C000, 0x0C000, pp, "pp2"), 59 LIMA_IP_DESC(pp3, false, false, 0x0E000, 0x0E000, pp, "pp3"), 60 LIMA_IP_DESC(pp4, false, false, -1, 0x28000, pp, "pp4"), 61 LIMA_IP_DESC(pp5, false, false, -1, 0x2A000, pp, "pp5"), 62 LIMA_IP_DESC(pp6, false, false, -1, 0x2C000, pp, "pp6"), 63 LIMA_IP_DESC(pp7, false, false, -1, 0x2E000, pp, "pp7"), 64 LIMA_IP_DESC(gpmmu, true, true, 0x03000, 0x03000, mmu, "gpmmu"), 65 LIMA_IP_DESC(ppmmu0, true, true, 0x04000, 0x04000, mmu, "ppmmu0"), 66 LIMA_IP_DESC(ppmmu1, false, false, 0x05000, 0x05000, mmu, "ppmmu1"), 67 LIMA_IP_DESC(ppmmu2, false, false, 0x06000, 0x06000, mmu, "ppmmu2"), 68 LIMA_IP_DESC(ppmmu3, false, false, 0x07000, 0x07000, mmu, "ppmmu3"), 69 LIMA_IP_DESC(ppmmu4, false, false, -1, 0x1C000, mmu, "ppmmu4"), 70 LIMA_IP_DESC(ppmmu5, false, false, -1, 0x1D000, mmu, "ppmmu5"), 71 LIMA_IP_DESC(ppmmu6, false, false, -1, 0x1E000, mmu, "ppmmu6"), 72 LIMA_IP_DESC(ppmmu7, false, false, -1, 0x1F000, mmu, "ppmmu7"), 73 LIMA_IP_DESC(dlbu, false, true, -1, 0x14000, dlbu, NULL), 74 LIMA_IP_DESC(bcast, false, true, -1, 0x13000, bcast, NULL), 75 LIMA_IP_DESC(pp_bcast, false, true, -1, 0x16000, pp_bcast, "pp"), 76 LIMA_IP_DESC(ppmmu_bcast, false, true, -1, 0x15000, mmu, NULL), 77 }; 78 79 const char *lima_ip_name(struct lima_ip *ip) 80 { 81 return lima_ip_desc[ip->id].name; 82 } 83 84 static int lima_clk_enable(struct lima_device *dev) 85 { 86 int err; 87 88 err = clk_prepare_enable(dev->clk_bus); 89 if (err) 90 return err; 91 92 err = clk_prepare_enable(dev->clk_gpu); 93 if (err) 94 goto error_out0; 95 96 if (dev->reset) { 97 err = reset_control_deassert(dev->reset); 98 if (err) { 99 dev_err(dev->dev, 100 "reset controller deassert failed %d\n", err); 101 goto error_out1; 102 } 103 } 104 105 return 0; 106 107 error_out1: 108 clk_disable_unprepare(dev->clk_gpu); 109 error_out0: 110 clk_disable_unprepare(dev->clk_bus); 111 return err; 112 } 113 114 static void lima_clk_disable(struct lima_device *dev) 115 { 116 if (dev->reset) 117 reset_control_assert(dev->reset); 118 clk_disable_unprepare(dev->clk_gpu); 119 clk_disable_unprepare(dev->clk_bus); 120 } 121 122 static int lima_clk_init(struct lima_device *dev) 123 { 124 int err; 125 126 dev->clk_bus = devm_clk_get(dev->dev, "bus"); 127 if (IS_ERR(dev->clk_bus)) { 128 err = PTR_ERR(dev->clk_bus); 129 if (err != -EPROBE_DEFER) 130 dev_err(dev->dev, "get bus clk failed %d\n", err); 131 dev->clk_bus = NULL; 132 return err; 133 } 134 135 dev->clk_gpu = devm_clk_get(dev->dev, "core"); 136 if (IS_ERR(dev->clk_gpu)) { 137 err = PTR_ERR(dev->clk_gpu); 138 if (err != -EPROBE_DEFER) 139 dev_err(dev->dev, "get core clk failed %d\n", err); 140 dev->clk_gpu = NULL; 141 return err; 142 } 143 144 dev->reset = devm_reset_control_array_get_optional_shared(dev->dev); 145 if (IS_ERR(dev->reset)) { 146 err = PTR_ERR(dev->reset); 147 if (err != -EPROBE_DEFER) 148 dev_err(dev->dev, "get reset controller failed %d\n", 149 err); 150 dev->reset = NULL; 151 return err; 152 } 153 154 return lima_clk_enable(dev); 155 } 156 157 static void lima_clk_fini(struct lima_device *dev) 158 { 159 lima_clk_disable(dev); 160 } 161 162 static int lima_regulator_enable(struct lima_device *dev) 163 { 164 int ret; 165 166 if (!dev->regulator) 167 return 0; 168 169 ret = regulator_enable(dev->regulator); 170 if (ret < 0) { 171 dev_err(dev->dev, "failed to enable regulator: %d\n", ret); 172 return ret; 173 } 174 175 return 0; 176 } 177 178 static void lima_regulator_disable(struct lima_device *dev) 179 { 180 if (dev->regulator) 181 regulator_disable(dev->regulator); 182 } 183 184 static int lima_regulator_init(struct lima_device *dev) 185 { 186 int ret; 187 188 dev->regulator = devm_regulator_get_optional(dev->dev, "mali"); 189 if (IS_ERR(dev->regulator)) { 190 ret = PTR_ERR(dev->regulator); 191 dev->regulator = NULL; 192 if (ret == -ENODEV) 193 return 0; 194 if (ret != -EPROBE_DEFER) 195 dev_err(dev->dev, "failed to get regulator: %d\n", ret); 196 return ret; 197 } 198 199 return lima_regulator_enable(dev); 200 } 201 202 static void lima_regulator_fini(struct lima_device *dev) 203 { 204 lima_regulator_disable(dev); 205 } 206 207 static int lima_init_ip(struct lima_device *dev, int index) 208 { 209 struct platform_device *pdev = to_platform_device(dev->dev); 210 struct lima_ip_desc *desc = lima_ip_desc + index; 211 struct lima_ip *ip = dev->ip + index; 212 const char *irq_name = desc->irq_name; 213 int offset = desc->offset[dev->id]; 214 bool must = desc->must_have[dev->id]; 215 int err; 216 217 if (offset < 0) 218 return 0; 219 220 ip->dev = dev; 221 ip->id = index; 222 ip->iomem = dev->iomem + offset; 223 if (irq_name) { 224 err = must ? platform_get_irq_byname(pdev, irq_name) : 225 platform_get_irq_byname_optional(pdev, irq_name); 226 if (err < 0) 227 goto out; 228 ip->irq = err; 229 } 230 231 err = desc->init(ip); 232 if (!err) { 233 ip->present = true; 234 return 0; 235 } 236 237 out: 238 return must ? err : 0; 239 } 240 241 static void lima_fini_ip(struct lima_device *ldev, int index) 242 { 243 struct lima_ip_desc *desc = lima_ip_desc + index; 244 struct lima_ip *ip = ldev->ip + index; 245 246 if (ip->present) 247 desc->fini(ip); 248 } 249 250 static int lima_init_gp_pipe(struct lima_device *dev) 251 { 252 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp; 253 int err; 254 255 pipe->ldev = dev; 256 257 err = lima_sched_pipe_init(pipe, "gp"); 258 if (err) 259 return err; 260 261 pipe->l2_cache[pipe->num_l2_cache++] = dev->ip + lima_ip_l2_cache0; 262 pipe->mmu[pipe->num_mmu++] = dev->ip + lima_ip_gpmmu; 263 pipe->processor[pipe->num_processor++] = dev->ip + lima_ip_gp; 264 265 err = lima_gp_pipe_init(dev); 266 if (err) { 267 lima_sched_pipe_fini(pipe); 268 return err; 269 } 270 271 return 0; 272 } 273 274 static void lima_fini_gp_pipe(struct lima_device *dev) 275 { 276 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp; 277 278 lima_gp_pipe_fini(dev); 279 lima_sched_pipe_fini(pipe); 280 } 281 282 static int lima_init_pp_pipe(struct lima_device *dev) 283 { 284 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp; 285 int err, i; 286 287 pipe->ldev = dev; 288 289 err = lima_sched_pipe_init(pipe, "pp"); 290 if (err) 291 return err; 292 293 for (i = 0; i < LIMA_SCHED_PIPE_MAX_PROCESSOR; i++) { 294 struct lima_ip *pp = dev->ip + lima_ip_pp0 + i; 295 struct lima_ip *ppmmu = dev->ip + lima_ip_ppmmu0 + i; 296 struct lima_ip *l2_cache; 297 298 if (dev->id == lima_gpu_mali400) 299 l2_cache = dev->ip + lima_ip_l2_cache0; 300 else 301 l2_cache = dev->ip + lima_ip_l2_cache1 + (i >> 2); 302 303 if (pp->present && ppmmu->present && l2_cache->present) { 304 pipe->mmu[pipe->num_mmu++] = ppmmu; 305 pipe->processor[pipe->num_processor++] = pp; 306 if (!pipe->l2_cache[i >> 2]) 307 pipe->l2_cache[pipe->num_l2_cache++] = l2_cache; 308 } 309 } 310 311 if (dev->ip[lima_ip_bcast].present) { 312 pipe->bcast_processor = dev->ip + lima_ip_pp_bcast; 313 pipe->bcast_mmu = dev->ip + lima_ip_ppmmu_bcast; 314 } 315 316 err = lima_pp_pipe_init(dev); 317 if (err) { 318 lima_sched_pipe_fini(pipe); 319 return err; 320 } 321 322 return 0; 323 } 324 325 static void lima_fini_pp_pipe(struct lima_device *dev) 326 { 327 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp; 328 329 lima_pp_pipe_fini(dev); 330 lima_sched_pipe_fini(pipe); 331 } 332 333 int lima_device_init(struct lima_device *ldev) 334 { 335 struct platform_device *pdev = to_platform_device(ldev->dev); 336 int err, i; 337 338 dma_set_coherent_mask(ldev->dev, DMA_BIT_MASK(32)); 339 340 err = lima_clk_init(ldev); 341 if (err) 342 return err; 343 344 err = lima_regulator_init(ldev); 345 if (err) 346 goto err_out0; 347 348 ldev->empty_vm = lima_vm_create(ldev); 349 if (!ldev->empty_vm) { 350 err = -ENOMEM; 351 goto err_out1; 352 } 353 354 ldev->va_start = 0; 355 if (ldev->id == lima_gpu_mali450) { 356 ldev->va_end = LIMA_VA_RESERVE_START; 357 ldev->dlbu_cpu = dma_alloc_wc( 358 ldev->dev, LIMA_PAGE_SIZE, 359 &ldev->dlbu_dma, GFP_KERNEL | __GFP_NOWARN); 360 if (!ldev->dlbu_cpu) { 361 err = -ENOMEM; 362 goto err_out2; 363 } 364 } else 365 ldev->va_end = LIMA_VA_RESERVE_END; 366 367 ldev->iomem = devm_platform_ioremap_resource(pdev, 0); 368 if (IS_ERR(ldev->iomem)) { 369 dev_err(ldev->dev, "fail to ioremap iomem\n"); 370 err = PTR_ERR(ldev->iomem); 371 goto err_out3; 372 } 373 374 for (i = 0; i < lima_ip_num; i++) { 375 err = lima_init_ip(ldev, i); 376 if (err) 377 goto err_out4; 378 } 379 380 err = lima_init_gp_pipe(ldev); 381 if (err) 382 goto err_out4; 383 384 err = lima_init_pp_pipe(ldev); 385 if (err) 386 goto err_out5; 387 388 ldev->dump.magic = LIMA_DUMP_MAGIC; 389 ldev->dump.version_major = LIMA_DUMP_MAJOR; 390 ldev->dump.version_minor = LIMA_DUMP_MINOR; 391 INIT_LIST_HEAD(&ldev->error_task_list); 392 mutex_init(&ldev->error_task_list_lock); 393 394 dev_info(ldev->dev, "bus rate = %lu\n", clk_get_rate(ldev->clk_bus)); 395 dev_info(ldev->dev, "mod rate = %lu", clk_get_rate(ldev->clk_gpu)); 396 397 return 0; 398 399 err_out5: 400 lima_fini_gp_pipe(ldev); 401 err_out4: 402 while (--i >= 0) 403 lima_fini_ip(ldev, i); 404 err_out3: 405 if (ldev->dlbu_cpu) 406 dma_free_wc(ldev->dev, LIMA_PAGE_SIZE, 407 ldev->dlbu_cpu, ldev->dlbu_dma); 408 err_out2: 409 lima_vm_put(ldev->empty_vm); 410 err_out1: 411 lima_regulator_fini(ldev); 412 err_out0: 413 lima_clk_fini(ldev); 414 return err; 415 } 416 417 void lima_device_fini(struct lima_device *ldev) 418 { 419 int i; 420 struct lima_sched_error_task *et, *tmp; 421 422 list_for_each_entry_safe(et, tmp, &ldev->error_task_list, list) { 423 list_del(&et->list); 424 kvfree(et); 425 } 426 mutex_destroy(&ldev->error_task_list_lock); 427 428 lima_fini_pp_pipe(ldev); 429 lima_fini_gp_pipe(ldev); 430 431 for (i = lima_ip_num - 1; i >= 0; i--) 432 lima_fini_ip(ldev, i); 433 434 if (ldev->dlbu_cpu) 435 dma_free_wc(ldev->dev, LIMA_PAGE_SIZE, 436 ldev->dlbu_cpu, ldev->dlbu_dma); 437 438 lima_vm_put(ldev->empty_vm); 439 440 lima_regulator_fini(ldev); 441 442 lima_clk_fini(ldev); 443 } 444