drivers/gpu/arm/mali400/mali/linux/mali_osk_mali.c

   1 /*
   2  * Copyright (C) 2010-2014 ARM Limited. All rights reserved.
   3  *
   4  * This program is free software and is provided to you under the terms of the GNU General Public License version 2
   5  * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
   6  *
   7  * A copy of the licence is included with the program, and can also be obtained from Free Software
   8  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
   9  */
  10
  11
  12 /**
  13  * @file mali_osk_mali.c
  14  * Implementation of the OS abstraction layer which is specific for the Mali kernel device driver
  15  */
  16 #include "../platform/rk30/custom_log.h"
  17
  18 #include <linux/kernel.h>
  19 #include <asm/uaccess.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/mali/mali_utgard.h>
  22 #include <linux/of.h>
  23 #include <linux/of_device.h>
  24
  25 #include "mali_osk_mali.h"
  26 #include "mali_kernel_common.h" /* MALI_xxx macros */
  27 #include "mali_osk.h"           /* kernel side OS functions */
  28 #include "mali_kernel_linux.h"
  29
  30
  31
  32 #ifdef CONFIG_MALI_DT
  33
  34 #define MALI_OSK_INVALID_RESOURCE_ADDRESS 0xFFFFFFFF
  35
  36 /**
  37  * Define the max number of resource we could have.
  38  */
  39 #define MALI_OSK_MAX_RESOURCE_NUMBER 27
  40
  41 /**
  42  * Define the max number of resource with interrupts, and they are
  43  * the first 20 elements in array mali_osk_resource_bank.
  44  */
  45 #define MALI_OSK_RESOURCE_WITH_IRQ_NUMBER 20
  46
  47 /**
  48  * pp core start and end location in mali_osk_resource_bank array.
  49  */
  50 #define MALI_OSK_RESOURCE_PP_LOCATION_START 2
  51 #define MALI_OSK_RESOURCE_PP_LOCATION_END 17
  52
  53 /**
  54  * L2 cache start and end location in mali_osk_resource_bank array.
  55  */
  56 #define MALI_OSK_RESOURCE_L2_LOCATION_START 20
  57 #define MALI_OSK_RESOURCE_l2_LOCATION_END 22
  58
  59 static _mali_osk_resource_t mali_osk_resource_bank[MALI_OSK_MAX_RESOURCE_NUMBER] = {
  60 /*-------------------------------------------------------*/
  61 /* rk_ext : to use dts_for_mali_ko_befor_r5p0-01rel0. */
  62 // {.description = "Mali_GP", .base = MALI_OFFSET_GP, .irq_name = "IRQGP",},
  63 {.description = "Mali_GP", .base = MALI_OFFSET_GP, .irq_name = "Mali_GP_IRQ",},
  64 // {.description = "Mali_GP_MMU", .base = MALI_OFFSET_GP_MMU, .irq_name = "IRQGPMMU",},
  65 {.description = "Mali_GP_MMU", .base = MALI_OFFSET_GP_MMU, .irq_name = "Mali_GP_MMU_IRQ",},
  66 // {.description = "Mali_PP0", .base = MALI_OFFSET_PP0, .irq_name = "IRQPP0",},
  67 {.description = "Mali_PP0", .base = MALI_OFFSET_PP0, .irq_name = "Mali_PP0_IRQ",},
  68 // {.description = "Mali_PP0_MMU", .base = MALI_OFFSET_PP0_MMU, .irq_name = "IRQPPMMU0",},
  69 {.description = "Mali_PP0_MMU", .base = MALI_OFFSET_PP0_MMU, .irq_name = "Mali_PP0_MMU_IRQ",},
  70 // {.description = "Mali_PP1", .base = MALI_OFFSET_PP1, .irq_name = "IRQPP1",},
  71 {.description = "Mali_PP1", .base = MALI_OFFSET_PP1, .irq_name = "Mali_PP1_IRQ",},
  72 // {.description = "Mali_PP1_MMU", .base = MALI_OFFSET_PP1_MMU, .irq_name = "IRQPPMMU1",},
  73 {.description = "Mali_PP1_MMU", .base = MALI_OFFSET_PP1_MMU, .irq_name = "Mali_PP1_MMU_IRQ",},
  74 /*-------------------------------------------------------*/
  75 {.description = "Mali_PP2", .base = MALI_OFFSET_PP2, .irq_name = "IRQPP2",},
  76 {.description = "Mali_PP2_MMU", .base = MALI_OFFSET_PP2_MMU, .irq_name = "IRQPPMMU2",},
  77 {.description = "Mali_PP3", .base = MALI_OFFSET_PP3, .irq_name = "IRQPP3",},
  78 {.description = "Mali_PP3_MMU", .base = MALI_OFFSET_PP3_MMU, .irq_name = "IRQPPMMU3",},
  79 {.description = "Mali_PP4", .base = MALI_OFFSET_PP4, .irq_name = "IRQPP4",},
  80 {.description = "Mali_PP4_MMU", .base = MALI_OFFSET_PP4_MMU, .irq_name = "IRQPPMMU4",},
  81 {.description = "Mali_PP5", .base = MALI_OFFSET_PP5, .irq_name = "IRQPP5",},
  82 {.description = "Mali_PP5_MMU", .base = MALI_OFFSET_PP5_MMU, .irq_name = "IRQPPMMU5",},
  83 {.description = "Mali_PP6", .base = MALI_OFFSET_PP6, .irq_name = "IRQPP6",},
  84 {.description = "Mali_PP6_MMU", .base = MALI_OFFSET_PP6_MMU, .irq_name = "IRQPPMMU6",},
  85 {.description = "Mali_PP7", .base = MALI_OFFSET_PP7, .irq_name = "IRQPP7",},
  86 {.description = "Mali_PP7_MMU", .base = MALI_OFFSET_PP7_MMU, .irq_name = "IRQPPMMU",},
  87 {.description = "Mali_PP_Broadcast", .base = MALI_OFFSET_PP_BCAST, .irq_name = "IRQPP",},
  88 {.description = "Mali_PMU", .base = MALI_OFFSET_PMU, .irq_name = "IRQPMU",},
  89 {.description = "Mali_L2", .base = MALI_OFFSET_L2_RESOURCE0,},
  90 {.description = "Mali_L2", .base = MALI_OFFSET_L2_RESOURCE1,},
  91 {.description = "Mali_L2", .base = MALI_OFFSET_L2_RESOURCE2,},
  92 {.description = "Mali_PP_MMU_Broadcast", .base = MALI_OFFSET_PP_BCAST_MMU,},
  93 {.description = "Mali_Broadcast", .base = MALI_OFFSET_BCAST,},
  94 {.description = "Mali_DLBU", .base = MALI_OFFSET_DLBU,},
  95 {.description = "Mali_DMA", .base = MALI_OFFSET_DMA,},
  96 };
  97
  98 _mali_osk_errcode_t _mali_osk_resource_initialize(void)
  99 {
 100         mali_bool mali_is_450 = MALI_FALSE;
 101         int i, pp_core_num = 0, l2_core_num = 0;
 102         struct resource *res;
 103
 104         for (i = 0; i < MALI_OSK_RESOURCE_WITH_IRQ_NUMBER; i++) {
 105                 res = platform_get_resource_byname(mali_platform_device, IORESOURCE_IRQ, mali_osk_resource_bank[i].irq_name);
 106                 if (res) {
 107                         mali_osk_resource_bank[i].irq = res->start;
 108                         if (0 == strncmp("Mali_PP_Broadcast", mali_osk_resource_bank[i].description,
 109                                         strlen(mali_osk_resource_bank[i].description))) {
 110                                 mali_is_450 = MALI_TRUE;
 111                         }
 112                 } else {
 113                         mali_osk_resource_bank[i].base = MALI_OSK_INVALID_RESOURCE_ADDRESS;
 114                 }
 115         }
 116
 117         for (i = MALI_OSK_RESOURCE_PP_LOCATION_START; i <= MALI_OSK_RESOURCE_PP_LOCATION_END; i++) {
 118                 if (MALI_OSK_INVALID_RESOURCE_ADDRESS != mali_osk_resource_bank[i].base) {
 119                         pp_core_num++;
 120                 }
 121         }
 122
 123         /* We have to divide by 2, because we caculate twice for only one pp(pp_core and pp_mmu_core). */
 124         if (0 != pp_core_num % 2) {
 125                 MALI_DEBUG_PRINT(2, ("The value of pp core number isn't normal."));
 126                 return _MALI_OSK_ERR_FAULT;
 127         }
 128
 129         pp_core_num /= 2;
 130
 131         /**
 132          * we can caculate the number of l2 cache core according the number of pp core number
 133          * and device type(mali400/mali450).
 134          */
 135         if (mali_is_450 && 4 < pp_core_num) {
 136                 l2_core_num = 3;
 137         } else if (mali_is_450 && 4 >= pp_core_num) {
 138                 l2_core_num = 2;
 139         } else {
 140                 l2_core_num = 1;
 141         }
 142
 143         for (i = MALI_OSK_RESOURCE_l2_LOCATION_END; i > MALI_OSK_RESOURCE_L2_LOCATION_START + l2_core_num - 1; i--) {
 144                 mali_osk_resource_bank[i].base = MALI_OSK_INVALID_RESOURCE_ADDRESS;
 145         }
 146
 147         /* If device is not mali-450 type, we have to remove related resource from resource bank. */
 148         if (!mali_is_450) {
 149                 for (i = MALI_OSK_RESOURCE_l2_LOCATION_END + 1; i < MALI_OSK_MAX_RESOURCE_NUMBER; i++) {
 150                         mali_osk_resource_bank[i].base = MALI_OSK_INVALID_RESOURCE_ADDRESS;
 151                 }
 152         }
 153
 154         return _MALI_OSK_ERR_OK;
 155 }
 156
 157 _mali_osk_errcode_t _mali_osk_resource_find(u32 addr, _mali_osk_resource_t *res)
 158 {
 159         int i;
 160
 161         if (NULL == mali_platform_device) {
 162                 return _MALI_OSK_ERR_ITEM_NOT_FOUND;
 163         }
 164
 165         /* Traverse all of resources in resources bank to find the matching one. */
 166         for (i = 0; i < MALI_OSK_MAX_RESOURCE_NUMBER; i++) {
 167                 if (mali_osk_resource_bank[i].base == addr) {
 168                         if (NULL != res) {
 169                                 res->base = addr + _mali_osk_resource_base_address();
 170                                 res->description = mali_osk_resource_bank[i].description;
 171                                 res->irq = mali_osk_resource_bank[i].irq;
 172                         }
 173                         return _MALI_OSK_ERR_OK;
 174                 }
 175         }
 176
 177         return _MALI_OSK_ERR_ITEM_NOT_FOUND;
 178 }
 179
 180 uintptr_t _mali_osk_resource_base_address(void)
 181 {
 182         struct resource *reg_res = NULL;
 183         uintptr_t ret = 0;
 184
 185         // reg_res = platform_get_resource(mali_platform_device, IORESOURCE_MEM, 0);
 186     /*
 187      * rk_ext : to use dts_for_mali_ko_befor_r5p0-01rel0.
 188      * 关于下面的 "1" :
 189      *      dts_for_mali_ko_befor_r5p0-01rel0 中,
 190      *      base_addr 定义在 reg 的 第二个 (index 为 "1") 的 item.
 191      */
 192         reg_res = platform_get_resource(mali_platform_device, IORESOURCE_MEM, 1);
 193
 194         if (NULL != reg_res) {
 195                 ret = reg_res->start;
 196         }
 197     // D_HEX( (unsigned int)ret);
 198
 199         return ret;
 200 }
 201
 202 void _mali_osk_device_data_pmu_config_get(u16 *domain_config_array, int array_size)
 203 {
 204         struct device_node *node = mali_platform_device->dev.of_node;
 205         struct property *prop;
 206         const __be32 *p;
 207         int length = 0, i = 0;
 208         u32 u;
 209
 210         MALI_DEBUG_ASSERT(NULL != node);
 211
 212         if (!of_get_property(node, "pmu_domain_config", &length)) {
 213                 return;
 214         }
 215
 216         if (array_size != length/sizeof(u32)) {
 217                 MALI_PRINT_ERROR(("Wrong pmu domain config in device tree."));
 218                 return;
 219         }
 220
 221         of_property_for_each_u32(node, "pmu_domain_config", prop, p, u) {
 222                 domain_config_array[i] = (u16)u;
 223                 i++;
 224         }
 225
 226         return;
 227 }
 228
 229 u32 _mali_osk_get_pmu_switch_delay(void)
 230 {
 231         struct device_node *node = mali_platform_device->dev.of_node;
 232         u32 switch_delay;
 233
 234         MALI_DEBUG_ASSERT(NULL != node);
 235
 236         if (0 == of_property_read_u32(node, "pmu_switch_delay", &switch_delay)) {
 237                 return switch_delay;
 238         } else {
 239                 MALI_DEBUG_PRINT(2, ("Couldn't find pmu_switch_delay in device tree configuration.\n"));
 240         }
 241
 242         return 0;
 243 }
 244
 245 #else /* CONFIG_MALI_DT */  /* 若未 定义 CONFIG_MALI_DT. */
 246
 247 _mali_osk_errcode_t _mali_osk_resource_find(u32 addr, _mali_osk_resource_t *res)
 248 {
 249         int i;
 250         uintptr_t phys_addr;
 251
 252         if (NULL == mali_platform_device) {
 253                 /* Not connected to a device */
 254                 return _MALI_OSK_ERR_ITEM_NOT_FOUND;
 255         }
 256
 257         phys_addr = addr + _mali_osk_resource_base_address();
 258         for (i = 0; i < mali_platform_device->num_resources; i++) {
 259                 if (IORESOURCE_MEM == resource_type(&(mali_platform_device->resource[i])) &&
 260                     mali_platform_device->resource[i].start == phys_addr) {
 261                         if (NULL != res) {
 262                                 res->base = phys_addr;
 263                                 res->description = mali_platform_device->resource[i].name;
 264
 265                                 /* Any (optional) IRQ resource belonging to this resource will follow */
 266                                 if ((i + 1) < mali_platform_device->num_resources &&
 267                                     IORESOURCE_IRQ == resource_type(&(mali_platform_device->resource[i + 1]))) {
 268                                         res->irq = mali_platform_device->resource[i + 1].start;
 269                                 } else {
 270                                         res->irq = -1;
 271                                 }
 272                         }
 273                         return _MALI_OSK_ERR_OK;
 274                 }
 275         }
 276
 277         return _MALI_OSK_ERR_ITEM_NOT_FOUND;
 278 }
 279
 280 uintptr_t _mali_osk_resource_base_address(void)
 281 {
 282         uintptr_t lowest_addr = (uintptr_t)(0 - 1);
 283         uintptr_t ret = 0;
 284
 285         if (NULL != mali_platform_device) {
 286                 int i;
 287                 for (i = 0; i < mali_platform_device->num_resources; i++) {
 288                         if (mali_platform_device->resource[i].flags & IORESOURCE_MEM &&
 289                             mali_platform_device->resource[i].start < lowest_addr) {
 290                                 lowest_addr = mali_platform_device->resource[i].start;
 291                                 ret = lowest_addr;
 292                         }
 293                 }
 294         }
 295
 296         return ret;
 297 }
 298
 299 void _mali_osk_device_data_pmu_config_get(u16 *domain_config_array, int array_size)
 300 {
 301         _mali_osk_device_data data = { 0, };
 302
 303         if (_MALI_OSK_ERR_OK == _mali_osk_device_data_get(&data)) {
 304                 /* Copy the custom customer power domain config */
 305                 _mali_osk_memcpy(domain_config_array, data.pmu_domain_config, sizeof(data.pmu_domain_config));
 306         }
 307
 308         return;
 309 }
 310
 311 u32 _mali_osk_get_pmu_switch_delay(void)
 312 {
 313         _mali_osk_errcode_t err;
 314         _mali_osk_device_data data = { 0, };
 315
 316         err = _mali_osk_device_data_get(&data);
 317
 318         if (_MALI_OSK_ERR_OK == err) {
 319                 return data.pmu_switch_delay;
 320         }
 321
 322         return 0;
 323 }
 324 #endif /* CONFIG_MALI_DT */
 325
 326 _mali_osk_errcode_t _mali_osk_device_data_get(_mali_osk_device_data *data)
 327 {
 328         MALI_DEBUG_ASSERT_POINTER(data);
 329
 330         if (NULL != mali_platform_device) {
 331                 struct mali_gpu_device_data *os_data = NULL;
 332
 333                 os_data = (struct mali_gpu_device_data *)mali_platform_device->dev.platform_data;
 334                 if (NULL != os_data) {
 335                         /* Copy data from OS dependant struct to Mali neutral struct (identical!) */
 336                         BUILD_BUG_ON(sizeof(*os_data) != sizeof(*data));
 337                         _mali_osk_memcpy(data, os_data, sizeof(*os_data));
 338
 339                         return _MALI_OSK_ERR_OK;
 340                 }
 341         }
 342
 343         return _MALI_OSK_ERR_ITEM_NOT_FOUND;
 344 }
 345
 346 u32 _mali_osk_l2_resource_count(void)
 347 {
 348         u32 l2_core_num = 0;
 349
 350         if (_MALI_OSK_ERR_OK == _mali_osk_resource_find(MALI_OFFSET_L2_RESOURCE0, NULL))
 351                 l2_core_num++;
 352
 353         if (_MALI_OSK_ERR_OK == _mali_osk_resource_find(MALI_OFFSET_L2_RESOURCE1, NULL))
 354                 l2_core_num++;
 355
 356         if (_MALI_OSK_ERR_OK == _mali_osk_resource_find(MALI_OFFSET_L2_RESOURCE2, NULL))
 357                 l2_core_num++;
 358
 359         MALI_DEBUG_ASSERT(0 < l2_core_num);
 360
 361         return l2_core_num;
 362 }
 363
 364 mali_bool _mali_osk_shared_interrupts(void)
 365 {
 366         u32 irqs[128];
 367         u32 i, j, irq, num_irqs_found = 0;
 368
 369         MALI_DEBUG_ASSERT_POINTER(mali_platform_device);
 370         MALI_DEBUG_ASSERT(128 >= mali_platform_device->num_resources);
 371
 372         for (i = 0; i < mali_platform_device->num_resources; i++) {
 373                 if (IORESOURCE_IRQ & mali_platform_device->resource[i].flags) {
 374                         irq = mali_platform_device->resource[i].start;
 375
 376                         for (j = 0; j < num_irqs_found; ++j) {
 377                                 if (irq == irqs[j]) {
 378                                         return MALI_TRUE;
 379                                 }
 380                         }
 381
 382                         irqs[num_irqs_found++] = irq;
 383                 }
 384         }
 385
 386         return MALI_FALSE;
 387 }