Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 1 | /* |
| 2 | * File: arch/blackfin/mm/blackfin_sram.c |
| 3 | * Based on: |
| 4 | * Author: |
| 5 | * |
| 6 | * Created: |
| 7 | * Description: SRAM driver for Blackfin ADSP-BF5xx |
| 8 | * |
| 9 | * Modified: |
Mike Frysinger | 321f6e0 | 2007-06-11 15:31:30 +0800 | [diff] [blame^] | 10 | * Copyright 2004-2007 Analog Devices Inc. |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 11 | * |
| 12 | * Bugs: Enter bugs at http://blackfin.uclinux.org/ |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License as published by |
| 16 | * the Free Software Foundation; either version 2 of the License, or |
| 17 | * (at your option) any later version. |
| 18 | * |
| 19 | * This program is distributed in the hope that it will be useful, |
| 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | * GNU General Public License for more details. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License |
| 25 | * along with this program; if not, see the file COPYING, or write |
| 26 | * to the Free Software Foundation, Inc., |
| 27 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 28 | */ |
| 29 | |
| 30 | #include <linux/autoconf.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/kernel.h> |
| 33 | #include <linux/types.h> |
| 34 | #include <linux/miscdevice.h> |
| 35 | #include <linux/ioport.h> |
| 36 | #include <linux/fcntl.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/poll.h> |
| 39 | #include <linux/proc_fs.h> |
| 40 | #include <linux/spinlock.h> |
| 41 | #include <linux/rtc.h> |
| 42 | #include <asm/blackfin.h> |
| 43 | #include "blackfin_sram.h" |
| 44 | |
| 45 | spinlock_t l1sram_lock, l1_data_sram_lock, l1_inst_sram_lock; |
| 46 | |
| 47 | #if CONFIG_L1_MAX_PIECE < 16 |
| 48 | #undef CONFIG_L1_MAX_PIECE |
| 49 | #define CONFIG_L1_MAX_PIECE 16 |
| 50 | #endif |
| 51 | |
| 52 | #if CONFIG_L1_MAX_PIECE > 1024 |
| 53 | #undef CONFIG_L1_MAX_PIECE |
| 54 | #define CONFIG_L1_MAX_PIECE 1024 |
| 55 | #endif |
| 56 | |
| 57 | #define SRAM_SLT_NULL 0 |
| 58 | #define SRAM_SLT_FREE 1 |
| 59 | #define SRAM_SLT_ALLOCATED 2 |
| 60 | |
| 61 | /* the data structure for L1 scratchpad and DATA SRAM */ |
| 62 | struct l1_sram_piece { |
| 63 | void *paddr; |
| 64 | int size; |
| 65 | int flag; |
| 66 | }; |
| 67 | |
| 68 | static struct l1_sram_piece l1_ssram[CONFIG_L1_MAX_PIECE]; |
| 69 | |
| 70 | #if L1_DATA_A_LENGTH != 0 |
| 71 | static struct l1_sram_piece l1_data_A_sram[CONFIG_L1_MAX_PIECE]; |
| 72 | #endif |
| 73 | |
| 74 | #if L1_DATA_B_LENGTH != 0 |
| 75 | static struct l1_sram_piece l1_data_B_sram[CONFIG_L1_MAX_PIECE]; |
| 76 | #endif |
| 77 | |
| 78 | #if L1_CODE_LENGTH != 0 |
| 79 | static struct l1_sram_piece l1_inst_sram[CONFIG_L1_MAX_PIECE]; |
| 80 | #endif |
| 81 | |
| 82 | /* L1 Scratchpad SRAM initialization function */ |
Mike Frysinger | 321f6e0 | 2007-06-11 15:31:30 +0800 | [diff] [blame^] | 83 | void __init l1sram_init(void) |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 84 | { |
| 85 | printk(KERN_INFO "Blackfin Scratchpad data SRAM: %d KB\n", |
| 86 | L1_SCRATCH_LENGTH >> 10); |
| 87 | |
| 88 | memset(&l1_ssram, 0x00, sizeof(l1_ssram)); |
| 89 | l1_ssram[0].paddr = (void*)L1_SCRATCH_START; |
| 90 | l1_ssram[0].size = L1_SCRATCH_LENGTH; |
| 91 | l1_ssram[0].flag = SRAM_SLT_FREE; |
| 92 | |
| 93 | /* mutex initialize */ |
| 94 | spin_lock_init(&l1sram_lock); |
| 95 | } |
| 96 | |
Mike Frysinger | 321f6e0 | 2007-06-11 15:31:30 +0800 | [diff] [blame^] | 97 | void __init l1_data_sram_init(void) |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 98 | { |
| 99 | #if L1_DATA_A_LENGTH != 0 |
| 100 | printk(KERN_INFO "Blackfin DATA_A SRAM: %d KB\n", |
| 101 | L1_DATA_A_LENGTH >> 10); |
| 102 | |
| 103 | memset(&l1_data_A_sram, 0x00, sizeof(l1_data_A_sram)); |
| 104 | l1_data_A_sram[0].paddr = (void*)L1_DATA_A_START + |
| 105 | (_ebss_l1 - _sdata_l1); |
| 106 | l1_data_A_sram[0].size = L1_DATA_A_LENGTH - (_ebss_l1 - _sdata_l1); |
| 107 | l1_data_A_sram[0].flag = SRAM_SLT_FREE; |
| 108 | #endif |
| 109 | #if L1_DATA_B_LENGTH != 0 |
| 110 | printk(KERN_INFO "Blackfin DATA_B SRAM: %d KB\n", |
| 111 | L1_DATA_B_LENGTH >> 10); |
| 112 | |
| 113 | memset(&l1_data_B_sram, 0x00, sizeof(l1_data_B_sram)); |
| 114 | l1_data_B_sram[0].paddr = (void*)L1_DATA_B_START; |
| 115 | l1_data_B_sram[0].size = L1_DATA_B_LENGTH; |
| 116 | l1_data_B_sram[0].flag = SRAM_SLT_FREE; |
| 117 | #endif |
| 118 | |
| 119 | /* mutex initialize */ |
| 120 | spin_lock_init(&l1_data_sram_lock); |
| 121 | } |
| 122 | |
Mike Frysinger | 321f6e0 | 2007-06-11 15:31:30 +0800 | [diff] [blame^] | 123 | void __init l1_inst_sram_init(void) |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 124 | { |
| 125 | #if L1_CODE_LENGTH != 0 |
| 126 | printk(KERN_INFO "Blackfin Instruction SRAM: %d KB\n", |
| 127 | L1_CODE_LENGTH >> 10); |
| 128 | |
| 129 | memset(&l1_inst_sram, 0x00, sizeof(l1_inst_sram)); |
| 130 | l1_inst_sram[0].paddr = (void*)L1_CODE_START + (_etext_l1 - _stext_l1); |
| 131 | l1_inst_sram[0].size = L1_CODE_LENGTH - (_etext_l1 - _stext_l1); |
| 132 | l1_inst_sram[0].flag = SRAM_SLT_FREE; |
| 133 | #endif |
| 134 | |
| 135 | /* mutex initialize */ |
| 136 | spin_lock_init(&l1_inst_sram_lock); |
| 137 | } |
| 138 | |
| 139 | /* L1 memory allocate function */ |
| 140 | static void *_l1_sram_alloc(size_t size, struct l1_sram_piece *pfree, int count) |
| 141 | { |
| 142 | int i, index = 0; |
| 143 | void *addr = NULL; |
| 144 | |
| 145 | if (size <= 0) |
| 146 | return NULL; |
| 147 | |
| 148 | /* Align the size */ |
| 149 | size = (size + 3) & ~3; |
| 150 | |
| 151 | /* not use the good method to match the best slot !!! */ |
Simon Arlott | d2d50aa | 2007-06-11 15:31:30 +0800 | [diff] [blame] | 152 | /* search an available memory slot */ |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 153 | for (i = 0; i < count; i++) { |
| 154 | if ((pfree[i].flag == SRAM_SLT_FREE) |
| 155 | && (pfree[i].size >= size)) { |
| 156 | addr = pfree[i].paddr; |
| 157 | pfree[i].flag = SRAM_SLT_ALLOCATED; |
| 158 | index = i; |
| 159 | break; |
| 160 | } |
| 161 | } |
| 162 | if (i >= count) |
| 163 | return NULL; |
| 164 | |
Simon Arlott | d2d50aa | 2007-06-11 15:31:30 +0800 | [diff] [blame] | 165 | /* updated the NULL memory slot !!! */ |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 166 | if (pfree[i].size > size) { |
| 167 | for (i = 0; i < count; i++) { |
| 168 | if (pfree[i].flag == SRAM_SLT_NULL) { |
| 169 | pfree[i].flag = SRAM_SLT_FREE; |
| 170 | pfree[i].paddr = addr + size; |
| 171 | pfree[i].size = pfree[index].size - size; |
| 172 | pfree[index].size = size; |
| 173 | break; |
| 174 | } |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | return addr; |
| 179 | } |
| 180 | |
| 181 | /* Allocate the largest available block. */ |
| 182 | static void *_l1_sram_alloc_max(struct l1_sram_piece *pfree, int count, |
| 183 | unsigned long *psize) |
| 184 | { |
| 185 | unsigned long best = 0; |
| 186 | int i, index = -1; |
| 187 | void *addr = NULL; |
| 188 | |
Simon Arlott | d2d50aa | 2007-06-11 15:31:30 +0800 | [diff] [blame] | 189 | /* search an available memory slot */ |
Bryan Wu | 1394f03 | 2007-05-06 14:50:22 -0700 | [diff] [blame] | 190 | for (i = 0; i < count; i++) { |
| 191 | if (pfree[i].flag == SRAM_SLT_FREE && pfree[i].size > best) { |
| 192 | addr = pfree[i].paddr; |
| 193 | index = i; |
| 194 | best = pfree[i].size; |
| 195 | } |
| 196 | } |
| 197 | if (index < 0) |
| 198 | return NULL; |
| 199 | *psize = best; |
| 200 | |
| 201 | pfree[index].flag = SRAM_SLT_ALLOCATED; |
| 202 | return addr; |
| 203 | } |
| 204 | |
| 205 | /* L1 memory free function */ |
| 206 | static int _l1_sram_free(const void *addr, |
| 207 | struct l1_sram_piece *pfree, int count) |
| 208 | { |
| 209 | int i, index = 0; |
| 210 | |
| 211 | /* search the relevant memory slot */ |
| 212 | for (i = 0; i < count; i++) { |
| 213 | if (pfree[i].paddr == addr) { |
| 214 | if (pfree[i].flag != SRAM_SLT_ALLOCATED) { |
| 215 | /* error log */ |
| 216 | return -1; |
| 217 | } |
| 218 | index = i; |
| 219 | break; |
| 220 | } |
| 221 | } |
| 222 | if (i >= count) |
| 223 | return -1; |
| 224 | |
| 225 | pfree[index].flag = SRAM_SLT_FREE; |
| 226 | |
| 227 | /* link the next address slot */ |
| 228 | for (i = 0; i < count; i++) { |
| 229 | if (((pfree[index].paddr + pfree[index].size) == pfree[i].paddr) |
| 230 | && (pfree[i].flag == SRAM_SLT_FREE)) { |
| 231 | pfree[i].flag = SRAM_SLT_NULL; |
| 232 | pfree[index].size += pfree[i].size; |
| 233 | pfree[index].flag = SRAM_SLT_FREE; |
| 234 | break; |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | /* link the last address slot */ |
| 239 | for (i = 0; i < count; i++) { |
| 240 | if (((pfree[i].paddr + pfree[i].size) == pfree[index].paddr) && |
| 241 | (pfree[i].flag == SRAM_SLT_FREE)) { |
| 242 | pfree[index].flag = SRAM_SLT_NULL; |
| 243 | pfree[i].size += pfree[index].size; |
| 244 | break; |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | int sram_free(const void *addr) |
| 252 | { |
| 253 | if (0) {} |
| 254 | #if L1_CODE_LENGTH != 0 |
| 255 | else if (addr >= (void *)L1_CODE_START |
| 256 | && addr < (void *)(L1_CODE_START + L1_CODE_LENGTH)) |
| 257 | return l1_inst_sram_free(addr); |
| 258 | #endif |
| 259 | #if L1_DATA_A_LENGTH != 0 |
| 260 | else if (addr >= (void *)L1_DATA_A_START |
| 261 | && addr < (void *)(L1_DATA_A_START + L1_DATA_A_LENGTH)) |
| 262 | return l1_data_A_sram_free(addr); |
| 263 | #endif |
| 264 | #if L1_DATA_B_LENGTH != 0 |
| 265 | else if (addr >= (void *)L1_DATA_B_START |
| 266 | && addr < (void *)(L1_DATA_B_START + L1_DATA_B_LENGTH)) |
| 267 | return l1_data_B_sram_free(addr); |
| 268 | #endif |
| 269 | else |
| 270 | return -1; |
| 271 | } |
| 272 | EXPORT_SYMBOL(sram_free); |
| 273 | |
| 274 | void *l1_data_A_sram_alloc(size_t size) |
| 275 | { |
| 276 | unsigned flags; |
| 277 | void *addr = NULL; |
| 278 | |
| 279 | /* add mutex operation */ |
| 280 | spin_lock_irqsave(&l1_data_sram_lock, flags); |
| 281 | |
| 282 | #if L1_DATA_A_LENGTH != 0 |
| 283 | addr = _l1_sram_alloc(size, l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram)); |
| 284 | #endif |
| 285 | |
| 286 | /* add mutex operation */ |
| 287 | spin_unlock_irqrestore(&l1_data_sram_lock, flags); |
| 288 | |
| 289 | pr_debug("Allocated address in l1_data_A_sram_alloc is 0x%lx+0x%lx\n", |
| 290 | (long unsigned int)addr, size); |
| 291 | |
| 292 | return addr; |
| 293 | } |
| 294 | EXPORT_SYMBOL(l1_data_A_sram_alloc); |
| 295 | |
| 296 | int l1_data_A_sram_free(const void *addr) |
| 297 | { |
| 298 | unsigned flags; |
| 299 | int ret; |
| 300 | |
| 301 | /* add mutex operation */ |
| 302 | spin_lock_irqsave(&l1_data_sram_lock, flags); |
| 303 | |
| 304 | #if L1_DATA_A_LENGTH != 0 |
| 305 | ret = _l1_sram_free(addr, |
| 306 | l1_data_A_sram, ARRAY_SIZE(l1_data_A_sram)); |
| 307 | #else |
| 308 | ret = -1; |
| 309 | #endif |
| 310 | |
| 311 | /* add mutex operation */ |
| 312 | spin_unlock_irqrestore(&l1_data_sram_lock, flags); |
| 313 | |
| 314 | return ret; |
| 315 | } |
| 316 | EXPORT_SYMBOL(l1_data_A_sram_free); |
| 317 | |
| 318 | void *l1_data_B_sram_alloc(size_t size) |
| 319 | { |
| 320 | #if L1_DATA_B_LENGTH != 0 |
| 321 | unsigned flags; |
| 322 | void *addr; |
| 323 | |
| 324 | /* add mutex operation */ |
| 325 | spin_lock_irqsave(&l1_data_sram_lock, flags); |
| 326 | |
| 327 | addr = _l1_sram_alloc(size, l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram)); |
| 328 | |
| 329 | /* add mutex operation */ |
| 330 | spin_unlock_irqrestore(&l1_data_sram_lock, flags); |
| 331 | |
| 332 | pr_debug("Allocated address in l1_data_B_sram_alloc is 0x%lx+0x%lx\n", |
| 333 | (long unsigned int)addr, size); |
| 334 | |
| 335 | return addr; |
| 336 | #else |
| 337 | return NULL; |
| 338 | #endif |
| 339 | } |
| 340 | EXPORT_SYMBOL(l1_data_B_sram_alloc); |
| 341 | |
| 342 | int l1_data_B_sram_free(const void *addr) |
| 343 | { |
| 344 | #if L1_DATA_B_LENGTH != 0 |
| 345 | unsigned flags; |
| 346 | int ret; |
| 347 | |
| 348 | /* add mutex operation */ |
| 349 | spin_lock_irqsave(&l1_data_sram_lock, flags); |
| 350 | |
| 351 | ret = _l1_sram_free(addr, l1_data_B_sram, ARRAY_SIZE(l1_data_B_sram)); |
| 352 | |
| 353 | /* add mutex operation */ |
| 354 | spin_unlock_irqrestore(&l1_data_sram_lock, flags); |
| 355 | |
| 356 | return ret; |
| 357 | #else |
| 358 | return -1; |
| 359 | #endif |
| 360 | } |
| 361 | EXPORT_SYMBOL(l1_data_B_sram_free); |
| 362 | |
| 363 | void *l1_data_sram_alloc(size_t size) |
| 364 | { |
| 365 | void *addr = l1_data_A_sram_alloc(size); |
| 366 | |
| 367 | if (!addr) |
| 368 | addr = l1_data_B_sram_alloc(size); |
| 369 | |
| 370 | return addr; |
| 371 | } |
| 372 | EXPORT_SYMBOL(l1_data_sram_alloc); |
| 373 | |
| 374 | void *l1_data_sram_zalloc(size_t size) |
| 375 | { |
| 376 | void *addr = l1_data_sram_alloc(size); |
| 377 | |
| 378 | if (addr) |
| 379 | memset(addr, 0x00, size); |
| 380 | |
| 381 | return addr; |
| 382 | } |
| 383 | EXPORT_SYMBOL(l1_data_sram_zalloc); |
| 384 | |
| 385 | int l1_data_sram_free(const void *addr) |
| 386 | { |
| 387 | int ret; |
| 388 | ret = l1_data_A_sram_free(addr); |
| 389 | if (ret == -1) |
| 390 | ret = l1_data_B_sram_free(addr); |
| 391 | return ret; |
| 392 | } |
| 393 | EXPORT_SYMBOL(l1_data_sram_free); |
| 394 | |
| 395 | void *l1_inst_sram_alloc(size_t size) |
| 396 | { |
| 397 | #if L1_DATA_A_LENGTH != 0 |
| 398 | unsigned flags; |
| 399 | void *addr; |
| 400 | |
| 401 | /* add mutex operation */ |
| 402 | spin_lock_irqsave(&l1_inst_sram_lock, flags); |
| 403 | |
| 404 | addr = _l1_sram_alloc(size, l1_inst_sram, ARRAY_SIZE(l1_inst_sram)); |
| 405 | |
| 406 | /* add mutex operation */ |
| 407 | spin_unlock_irqrestore(&l1_inst_sram_lock, flags); |
| 408 | |
| 409 | pr_debug("Allocated address in l1_inst_sram_alloc is 0x%lx+0x%lx\n", |
| 410 | (long unsigned int)addr, size); |
| 411 | |
| 412 | return addr; |
| 413 | #else |
| 414 | return NULL; |
| 415 | #endif |
| 416 | } |
| 417 | EXPORT_SYMBOL(l1_inst_sram_alloc); |
| 418 | |
| 419 | int l1_inst_sram_free(const void *addr) |
| 420 | { |
| 421 | #if L1_CODE_LENGTH != 0 |
| 422 | unsigned flags; |
| 423 | int ret; |
| 424 | |
| 425 | /* add mutex operation */ |
| 426 | spin_lock_irqsave(&l1_inst_sram_lock, flags); |
| 427 | |
| 428 | ret = _l1_sram_free(addr, l1_inst_sram, ARRAY_SIZE(l1_inst_sram)); |
| 429 | |
| 430 | /* add mutex operation */ |
| 431 | spin_unlock_irqrestore(&l1_inst_sram_lock, flags); |
| 432 | |
| 433 | return ret; |
| 434 | #else |
| 435 | return -1; |
| 436 | #endif |
| 437 | } |
| 438 | EXPORT_SYMBOL(l1_inst_sram_free); |
| 439 | |
| 440 | /* L1 Scratchpad memory allocate function */ |
| 441 | void *l1sram_alloc(size_t size) |
| 442 | { |
| 443 | unsigned flags; |
| 444 | void *addr; |
| 445 | |
| 446 | /* add mutex operation */ |
| 447 | spin_lock_irqsave(&l1sram_lock, flags); |
| 448 | |
| 449 | addr = _l1_sram_alloc(size, l1_ssram, ARRAY_SIZE(l1_ssram)); |
| 450 | |
| 451 | /* add mutex operation */ |
| 452 | spin_unlock_irqrestore(&l1sram_lock, flags); |
| 453 | |
| 454 | return addr; |
| 455 | } |
| 456 | |
| 457 | /* L1 Scratchpad memory allocate function */ |
| 458 | void *l1sram_alloc_max(size_t *psize) |
| 459 | { |
| 460 | unsigned flags; |
| 461 | void *addr; |
| 462 | |
| 463 | /* add mutex operation */ |
| 464 | spin_lock_irqsave(&l1sram_lock, flags); |
| 465 | |
| 466 | addr = _l1_sram_alloc_max(l1_ssram, ARRAY_SIZE(l1_ssram), psize); |
| 467 | |
| 468 | /* add mutex operation */ |
| 469 | spin_unlock_irqrestore(&l1sram_lock, flags); |
| 470 | |
| 471 | return addr; |
| 472 | } |
| 473 | |
| 474 | /* L1 Scratchpad memory free function */ |
| 475 | int l1sram_free(const void *addr) |
| 476 | { |
| 477 | unsigned flags; |
| 478 | int ret; |
| 479 | |
| 480 | /* add mutex operation */ |
| 481 | spin_lock_irqsave(&l1sram_lock, flags); |
| 482 | |
| 483 | ret = _l1_sram_free(addr, l1_ssram, ARRAY_SIZE(l1_ssram)); |
| 484 | |
| 485 | /* add mutex operation */ |
| 486 | spin_unlock_irqrestore(&l1sram_lock, flags); |
| 487 | |
| 488 | return ret; |
| 489 | } |
| 490 | |
| 491 | int sram_free_with_lsl(const void *addr) |
| 492 | { |
| 493 | struct sram_list_struct *lsl, **tmp; |
| 494 | struct mm_struct *mm = current->mm; |
| 495 | |
| 496 | for (tmp = &mm->context.sram_list; *tmp; tmp = &(*tmp)->next) |
| 497 | if ((*tmp)->addr == addr) |
| 498 | goto found; |
| 499 | return -1; |
| 500 | found: |
| 501 | lsl = *tmp; |
| 502 | sram_free(addr); |
| 503 | *tmp = lsl->next; |
| 504 | kfree(lsl); |
| 505 | |
| 506 | return 0; |
| 507 | } |
| 508 | EXPORT_SYMBOL(sram_free_with_lsl); |
| 509 | |
| 510 | void *sram_alloc_with_lsl(size_t size, unsigned long flags) |
| 511 | { |
| 512 | void *addr = NULL; |
| 513 | struct sram_list_struct *lsl = NULL; |
| 514 | struct mm_struct *mm = current->mm; |
| 515 | |
| 516 | lsl = kmalloc(sizeof(struct sram_list_struct), GFP_KERNEL); |
| 517 | if (!lsl) |
| 518 | return NULL; |
| 519 | memset(lsl, 0, sizeof(*lsl)); |
| 520 | |
| 521 | if (flags & L1_INST_SRAM) |
| 522 | addr = l1_inst_sram_alloc(size); |
| 523 | |
| 524 | if (addr == NULL && (flags & L1_DATA_A_SRAM)) |
| 525 | addr = l1_data_A_sram_alloc(size); |
| 526 | |
| 527 | if (addr == NULL && (flags & L1_DATA_B_SRAM)) |
| 528 | addr = l1_data_B_sram_alloc(size); |
| 529 | |
| 530 | if (addr == NULL) { |
| 531 | kfree(lsl); |
| 532 | return NULL; |
| 533 | } |
| 534 | lsl->addr = addr; |
| 535 | lsl->length = size; |
| 536 | lsl->next = mm->context.sram_list; |
| 537 | mm->context.sram_list = lsl; |
| 538 | return addr; |
| 539 | } |
| 540 | EXPORT_SYMBOL(sram_alloc_with_lsl); |