1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */ 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_get_optional(dev->dev, NULL); 109 if (IS_ERR(dev->reset)) { 110 err = PTR_ERR(dev->reset); 111 if (err != -EPROBE_DEFER) 112 dev_err(dev->dev, "get reset controller failed %d\n", 113 err); 114 goto error_out1; 115 } else if (dev->reset != NULL) { 116 err = reset_control_deassert(dev->reset); 117 if (err) { 118 dev_err(dev->dev, 119 "reset controller deassert failed %d\n", err); 120 goto error_out1; 121 } 122 } 123 124 return 0; 125 126 error_out1: 127 clk_disable_unprepare(dev->clk_gpu); 128 error_out0: 129 clk_disable_unprepare(dev->clk_bus); 130 return err; 131 } 132 133 static void lima_clk_fini(struct lima_device *dev) 134 { 135 if (dev->reset != NULL) 136 reset_control_assert(dev->reset); 137 clk_disable_unprepare(dev->clk_gpu); 138 clk_disable_unprepare(dev->clk_bus); 139 } 140 141 static int lima_regulator_init(struct lima_device *dev) 142 { 143 int ret; 144 145 dev->regulator = devm_regulator_get_optional(dev->dev, "mali"); 146 if (IS_ERR(dev->regulator)) { 147 ret = PTR_ERR(dev->regulator); 148 dev->regulator = NULL; 149 if (ret == -ENODEV) 150 return 0; 151 if (ret != -EPROBE_DEFER) 152 dev_err(dev->dev, "failed to get regulator: %d\n", ret); 153 return ret; 154 } 155 156 ret = regulator_enable(dev->regulator); 157 if (ret < 0) { 158 dev_err(dev->dev, "failed to enable regulator: %d\n", ret); 159 return ret; 160 } 161 162 return 0; 163 } 164 165 static void lima_regulator_fini(struct lima_device *dev) 166 { 167 if (dev->regulator) 168 regulator_disable(dev->regulator); 169 } 170 171 static int lima_init_ip(struct lima_device *dev, int index) 172 { 173 struct lima_ip_desc *desc = lima_ip_desc + index; 174 struct lima_ip *ip = dev->ip + index; 175 int offset = desc->offset[dev->id]; 176 bool must = desc->must_have[dev->id]; 177 int err; 178 179 if (offset < 0) 180 return 0; 181 182 ip->dev = dev; 183 ip->id = index; 184 ip->iomem = dev->iomem + offset; 185 if (desc->irq_name) { 186 err = platform_get_irq_byname(dev->pdev, desc->irq_name); 187 if (err < 0) 188 goto out; 189 ip->irq = err; 190 } 191 192 err = desc->init(ip); 193 if (!err) { 194 ip->present = true; 195 return 0; 196 } 197 198 out: 199 return must ? err : 0; 200 } 201 202 static void lima_fini_ip(struct lima_device *ldev, int index) 203 { 204 struct lima_ip_desc *desc = lima_ip_desc + index; 205 struct lima_ip *ip = ldev->ip + index; 206 207 if (ip->present) 208 desc->fini(ip); 209 } 210 211 static int lima_init_gp_pipe(struct lima_device *dev) 212 { 213 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp; 214 int err; 215 216 err = lima_sched_pipe_init(pipe, "gp"); 217 if (err) 218 return err; 219 220 pipe->l2_cache[pipe->num_l2_cache++] = dev->ip + lima_ip_l2_cache0; 221 pipe->mmu[pipe->num_mmu++] = dev->ip + lima_ip_gpmmu; 222 pipe->processor[pipe->num_processor++] = dev->ip + lima_ip_gp; 223 224 err = lima_gp_pipe_init(dev); 225 if (err) { 226 lima_sched_pipe_fini(pipe); 227 return err; 228 } 229 230 return 0; 231 } 232 233 static void lima_fini_gp_pipe(struct lima_device *dev) 234 { 235 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp; 236 237 lima_gp_pipe_fini(dev); 238 lima_sched_pipe_fini(pipe); 239 } 240 241 static int lima_init_pp_pipe(struct lima_device *dev) 242 { 243 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp; 244 int err, i; 245 246 err = lima_sched_pipe_init(pipe, "pp"); 247 if (err) 248 return err; 249 250 for (i = 0; i < LIMA_SCHED_PIPE_MAX_PROCESSOR; i++) { 251 struct lima_ip *pp = dev->ip + lima_ip_pp0 + i; 252 struct lima_ip *ppmmu = dev->ip + lima_ip_ppmmu0 + i; 253 struct lima_ip *l2_cache; 254 255 if (dev->id == lima_gpu_mali400) 256 l2_cache = dev->ip + lima_ip_l2_cache0; 257 else 258 l2_cache = dev->ip + lima_ip_l2_cache1 + (i >> 2); 259 260 if (pp->present && ppmmu->present && l2_cache->present) { 261 pipe->mmu[pipe->num_mmu++] = ppmmu; 262 pipe->processor[pipe->num_processor++] = pp; 263 if (!pipe->l2_cache[i >> 2]) 264 pipe->l2_cache[pipe->num_l2_cache++] = l2_cache; 265 } 266 } 267 268 if (dev->ip[lima_ip_bcast].present) { 269 pipe->bcast_processor = dev->ip + lima_ip_pp_bcast; 270 pipe->bcast_mmu = dev->ip + lima_ip_ppmmu_bcast; 271 } 272 273 err = lima_pp_pipe_init(dev); 274 if (err) { 275 lima_sched_pipe_fini(pipe); 276 return err; 277 } 278 279 return 0; 280 } 281 282 static void lima_fini_pp_pipe(struct lima_device *dev) 283 { 284 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp; 285 286 lima_pp_pipe_fini(dev); 287 lima_sched_pipe_fini(pipe); 288 } 289 290 int lima_device_init(struct lima_device *ldev) 291 { 292 int err, i; 293 struct resource *res; 294 295 dma_set_coherent_mask(ldev->dev, DMA_BIT_MASK(32)); 296 297 err = lima_clk_init(ldev); 298 if (err) 299 return err; 300 301 err = lima_regulator_init(ldev); 302 if (err) 303 goto err_out0; 304 305 ldev->empty_vm = lima_vm_create(ldev); 306 if (!ldev->empty_vm) { 307 err = -ENOMEM; 308 goto err_out1; 309 } 310 311 ldev->va_start = 0; 312 if (ldev->id == lima_gpu_mali450) { 313 ldev->va_end = LIMA_VA_RESERVE_START; 314 ldev->dlbu_cpu = dma_alloc_wc( 315 ldev->dev, LIMA_PAGE_SIZE, 316 &ldev->dlbu_dma, GFP_KERNEL); 317 if (!ldev->dlbu_cpu) { 318 err = -ENOMEM; 319 goto err_out2; 320 } 321 } else 322 ldev->va_end = LIMA_VA_RESERVE_END; 323 324 res = platform_get_resource(ldev->pdev, IORESOURCE_MEM, 0); 325 ldev->iomem = devm_ioremap_resource(ldev->dev, res); 326 if (IS_ERR(ldev->iomem)) { 327 dev_err(ldev->dev, "fail to ioremap iomem\n"); 328 err = PTR_ERR(ldev->iomem); 329 goto err_out3; 330 } 331 332 for (i = 0; i < lima_ip_num; i++) { 333 err = lima_init_ip(ldev, i); 334 if (err) 335 goto err_out4; 336 } 337 338 err = lima_init_gp_pipe(ldev); 339 if (err) 340 goto err_out4; 341 342 err = lima_init_pp_pipe(ldev); 343 if (err) 344 goto err_out5; 345 346 dev_info(ldev->dev, "bus rate = %lu\n", clk_get_rate(ldev->clk_bus)); 347 dev_info(ldev->dev, "mod rate = %lu", clk_get_rate(ldev->clk_gpu)); 348 349 return 0; 350 351 err_out5: 352 lima_fini_gp_pipe(ldev); 353 err_out4: 354 while (--i >= 0) 355 lima_fini_ip(ldev, i); 356 err_out3: 357 if (ldev->dlbu_cpu) 358 dma_free_wc(ldev->dev, LIMA_PAGE_SIZE, 359 ldev->dlbu_cpu, ldev->dlbu_dma); 360 err_out2: 361 lima_vm_put(ldev->empty_vm); 362 err_out1: 363 lima_regulator_fini(ldev); 364 err_out0: 365 lima_clk_fini(ldev); 366 return err; 367 } 368 369 void lima_device_fini(struct lima_device *ldev) 370 { 371 int i; 372 373 lima_fini_pp_pipe(ldev); 374 lima_fini_gp_pipe(ldev); 375 376 for (i = lima_ip_num - 1; i >= 0; i--) 377 lima_fini_ip(ldev, i); 378 379 if (ldev->dlbu_cpu) 380 dma_free_wc(ldev->dev, LIMA_PAGE_SIZE, 381 ldev->dlbu_cpu, ldev->dlbu_dma); 382 383 lima_vm_put(ldev->empty_vm); 384 385 lima_regulator_fini(ldev); 386 387 lima_clk_fini(ldev); 388 } 389