root/drivers/gpu/drm/lima/lima_device.c

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DEFINITIONS

This source file includes following definitions.
  1. lima_ip_name
  2. lima_clk_init
  3. lima_clk_fini
  4. lima_regulator_init
  5. lima_regulator_fini
  6. lima_init_ip
  7. lima_fini_ip
  8. lima_init_gp_pipe
  9. lima_fini_gp_pipe
  10. lima_init_pp_pipe
  11. lima_fini_pp_pipe
  12. lima_device_init
  13. lima_device_fini

   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 }

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