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 unsigned long bus_rate, gpu_rate; 84 85 dev->clk_bus = devm_clk_get(dev->dev, "bus"); 86 if (IS_ERR(dev->clk_bus)) { 87 dev_err(dev->dev, "get bus clk failed %ld\n", PTR_ERR(dev->clk_bus)); 88 return PTR_ERR(dev->clk_bus); 89 } 90 91 dev->clk_gpu = devm_clk_get(dev->dev, "core"); 92 if (IS_ERR(dev->clk_gpu)) { 93 dev_err(dev->dev, "get core clk failed %ld\n", PTR_ERR(dev->clk_gpu)); 94 return PTR_ERR(dev->clk_gpu); 95 } 96 97 bus_rate = clk_get_rate(dev->clk_bus); 98 dev_info(dev->dev, "bus rate = %lu\n", bus_rate); 99 100 gpu_rate = clk_get_rate(dev->clk_gpu); 101 dev_info(dev->dev, "mod rate = %lu", gpu_rate); 102 103 err = clk_prepare_enable(dev->clk_bus); 104 if (err) 105 return err; 106 107 err = clk_prepare_enable(dev->clk_gpu); 108 if (err) 109 goto error_out0; 110 111 dev->reset = devm_reset_control_get_optional(dev->dev, NULL); 112 if (IS_ERR(dev->reset)) { 113 err = PTR_ERR(dev->reset); 114 goto error_out1; 115 } else if (dev->reset != NULL) { 116 err = reset_control_deassert(dev->reset); 117 if (err) 118 goto error_out1; 119 } 120 121 return 0; 122 123 error_out1: 124 clk_disable_unprepare(dev->clk_gpu); 125 error_out0: 126 clk_disable_unprepare(dev->clk_bus); 127 return err; 128 } 129 130 static void lima_clk_fini(struct lima_device *dev) 131 { 132 if (dev->reset != NULL) 133 reset_control_assert(dev->reset); 134 clk_disable_unprepare(dev->clk_gpu); 135 clk_disable_unprepare(dev->clk_bus); 136 } 137 138 static int lima_regulator_init(struct lima_device *dev) 139 { 140 int ret; 141 142 dev->regulator = devm_regulator_get_optional(dev->dev, "mali"); 143 if (IS_ERR(dev->regulator)) { 144 ret = PTR_ERR(dev->regulator); 145 dev->regulator = NULL; 146 if (ret == -ENODEV) 147 return 0; 148 dev_err(dev->dev, "failed to get regulator: %d\n", ret); 149 return ret; 150 } 151 152 ret = regulator_enable(dev->regulator); 153 if (ret < 0) { 154 dev_err(dev->dev, "failed to enable regulator: %d\n", ret); 155 return ret; 156 } 157 158 return 0; 159 } 160 161 static void lima_regulator_fini(struct lima_device *dev) 162 { 163 if (dev->regulator) 164 regulator_disable(dev->regulator); 165 } 166 167 static int lima_init_ip(struct lima_device *dev, int index) 168 { 169 struct lima_ip_desc *desc = lima_ip_desc + index; 170 struct lima_ip *ip = dev->ip + index; 171 int offset = desc->offset[dev->id]; 172 bool must = desc->must_have[dev->id]; 173 int err; 174 175 if (offset < 0) 176 return 0; 177 178 ip->dev = dev; 179 ip->id = index; 180 ip->iomem = dev->iomem + offset; 181 if (desc->irq_name) { 182 err = platform_get_irq_byname(dev->pdev, desc->irq_name); 183 if (err < 0) 184 goto out; 185 ip->irq = err; 186 } 187 188 err = desc->init(ip); 189 if (!err) { 190 ip->present = true; 191 return 0; 192 } 193 194 out: 195 return must ? err : 0; 196 } 197 198 static void lima_fini_ip(struct lima_device *ldev, int index) 199 { 200 struct lima_ip_desc *desc = lima_ip_desc + index; 201 struct lima_ip *ip = ldev->ip + index; 202 203 if (ip->present) 204 desc->fini(ip); 205 } 206 207 static int lima_init_gp_pipe(struct lima_device *dev) 208 { 209 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp; 210 int err; 211 212 err = lima_sched_pipe_init(pipe, "gp"); 213 if (err) 214 return err; 215 216 pipe->l2_cache[pipe->num_l2_cache++] = dev->ip + lima_ip_l2_cache0; 217 pipe->mmu[pipe->num_mmu++] = dev->ip + lima_ip_gpmmu; 218 pipe->processor[pipe->num_processor++] = dev->ip + lima_ip_gp; 219 220 err = lima_gp_pipe_init(dev); 221 if (err) { 222 lima_sched_pipe_fini(pipe); 223 return err; 224 } 225 226 return 0; 227 } 228 229 static void lima_fini_gp_pipe(struct lima_device *dev) 230 { 231 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_gp; 232 233 lima_gp_pipe_fini(dev); 234 lima_sched_pipe_fini(pipe); 235 } 236 237 static int lima_init_pp_pipe(struct lima_device *dev) 238 { 239 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp; 240 int err, i; 241 242 err = lima_sched_pipe_init(pipe, "pp"); 243 if (err) 244 return err; 245 246 for (i = 0; i < LIMA_SCHED_PIPE_MAX_PROCESSOR; i++) { 247 struct lima_ip *pp = dev->ip + lima_ip_pp0 + i; 248 struct lima_ip *ppmmu = dev->ip + lima_ip_ppmmu0 + i; 249 struct lima_ip *l2_cache; 250 251 if (dev->id == lima_gpu_mali400) 252 l2_cache = dev->ip + lima_ip_l2_cache0; 253 else 254 l2_cache = dev->ip + lima_ip_l2_cache1 + (i >> 2); 255 256 if (pp->present && ppmmu->present && l2_cache->present) { 257 pipe->mmu[pipe->num_mmu++] = ppmmu; 258 pipe->processor[pipe->num_processor++] = pp; 259 if (!pipe->l2_cache[i >> 2]) 260 pipe->l2_cache[pipe->num_l2_cache++] = l2_cache; 261 } 262 } 263 264 if (dev->ip[lima_ip_bcast].present) { 265 pipe->bcast_processor = dev->ip + lima_ip_pp_bcast; 266 pipe->bcast_mmu = dev->ip + lima_ip_ppmmu_bcast; 267 } 268 269 err = lima_pp_pipe_init(dev); 270 if (err) { 271 lima_sched_pipe_fini(pipe); 272 return err; 273 } 274 275 return 0; 276 } 277 278 static void lima_fini_pp_pipe(struct lima_device *dev) 279 { 280 struct lima_sched_pipe *pipe = dev->pipe + lima_pipe_pp; 281 282 lima_pp_pipe_fini(dev); 283 lima_sched_pipe_fini(pipe); 284 } 285 286 int lima_device_init(struct lima_device *ldev) 287 { 288 int err, i; 289 struct resource *res; 290 291 dma_set_coherent_mask(ldev->dev, DMA_BIT_MASK(32)); 292 293 err = lima_clk_init(ldev); 294 if (err) { 295 dev_err(ldev->dev, "clk init fail %d\n", err); 296 return err; 297 } 298 299 err = lima_regulator_init(ldev); 300 if (err) { 301 dev_err(ldev->dev, "regulator init fail %d\n", err); 302 goto err_out0; 303 } 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 return 0; 347 348 err_out5: 349 lima_fini_gp_pipe(ldev); 350 err_out4: 351 while (--i >= 0) 352 lima_fini_ip(ldev, i); 353 err_out3: 354 if (ldev->dlbu_cpu) 355 dma_free_wc(ldev->dev, LIMA_PAGE_SIZE, 356 ldev->dlbu_cpu, ldev->dlbu_dma); 357 err_out2: 358 lima_vm_put(ldev->empty_vm); 359 err_out1: 360 lima_regulator_fini(ldev); 361 err_out0: 362 lima_clk_fini(ldev); 363 return err; 364 } 365 366 void lima_device_fini(struct lima_device *ldev) 367 { 368 int i; 369 370 lima_fini_pp_pipe(ldev); 371 lima_fini_gp_pipe(ldev); 372 373 for (i = lima_ip_num - 1; i >= 0; i--) 374 lima_fini_ip(ldev, i); 375 376 if (ldev->dlbu_cpu) 377 dma_free_wc(ldev->dev, LIMA_PAGE_SIZE, 378 ldev->dlbu_cpu, ldev->dlbu_dma); 379 380 lima_vm_put(ldev->empty_vm); 381 382 lima_regulator_fini(ldev); 383 384 lima_clk_fini(ldev); 385 } 386