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