Shad Ansari | 2f7f9be | 2017-06-07 13:34:53 -0700 | [diff] [blame^] | 1 | /* |
| 2 | <:copyright-BRCM:2016:DUAL/GPL:standard |
| 3 | |
| 4 | Broadcom Proprietary and Confidential.(c) 2016 Broadcom |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Unless you and Broadcom execute a separate written software license |
| 8 | agreement governing use of this software, this software is licensed |
| 9 | to you under the terms of the GNU General Public License version 2 |
| 10 | (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php, |
| 11 | with the following added to such license: |
| 12 | |
| 13 | As a special exception, the copyright holders of this software give |
| 14 | you permission to link this software with independent modules, and |
| 15 | to copy and distribute the resulting executable under terms of your |
| 16 | choice, provided that you also meet, for each linked independent |
| 17 | module, the terms and conditions of the license of that module. |
| 18 | An independent module is a module which is not derived from this |
| 19 | software. The special exception does not apply to any modifications |
| 20 | of the software. |
| 21 | |
| 22 | Not withstanding the above, under no circumstances may you combine |
| 23 | this software in any way with any other Broadcom software provided |
| 24 | under a license other than the GPL, without Broadcom's express prior |
| 25 | written consent. |
| 26 | |
| 27 | :> |
| 28 | */ |
| 29 | |
| 30 | /* |
| 31 | * bcmos_system.h |
| 32 | * Maple System Services |
| 33 | * posix port: simulation |
| 34 | */ |
| 35 | |
| 36 | #ifndef BCMOS_SYSTEM_H_ |
| 37 | #define BCMOS_SYSTEM_H_ |
| 38 | #include <linux/version.h> |
| 39 | #include <linux/module.h> |
| 40 | #include <linux/types.h> |
| 41 | #include <linux/string.h> |
| 42 | #include <linux/stddef.h> |
| 43 | #include <linux/skbuff.h> |
| 44 | #include <linux/mutex.h> |
| 45 | #include <linux/spinlock.h> |
| 46 | #include <linux/semaphore.h> |
| 47 | #include <linux/interrupt.h> |
| 48 | #include <linux/kthread.h> |
| 49 | #include <linux/compiler.h> |
| 50 | #include <linux/random.h> |
| 51 | #include <linux/ctype.h> |
| 52 | #include <linux/time.h> |
| 53 | #include <asm/io.h> |
| 54 | |
| 55 | #define BCMOS_IRQ_SINGLE 0 |
| 56 | #define BCMOS_IRQ_SHARED IRQF_SHARED |
| 57 | |
| 58 | /* Re-define GNU typeof as ISO __typeof__ */ |
| 59 | #define typeof __typeof__ |
| 60 | |
| 61 | #define strtol(s,p,b) simple_strtol(s,p,b) |
| 62 | |
| 63 | /* Specify here which system functions are inlined */ |
| 64 | |
| 65 | #define BCMOS_FASTLOCK_INLINE |
| 66 | #define BCMOS_SEM_INLINE |
| 67 | #define BCMOS_MUTEX_INLINE |
| 68 | |
| 69 | #ifdef ENABLE_LOG |
| 70 | #define BCMOS_TRACE_IN_DEV_LOG |
| 71 | #endif |
| 72 | |
| 73 | #if !defined(BCMOS_TRACE_IN_DEV_LOG) && !defined(BCMOS_TRACE_PRINTF) |
| 74 | #define BCMOS_TRACE_PRINTF |
| 75 | #endif |
| 76 | |
| 77 | /* #define BCMOS_BYTE_POOL_ALLOC_FREE_INLINE */ |
| 78 | #define BCMOS_MALLOC_FREE_INLINE |
| 79 | /* #define BCMOS_CALLOC_INLINE */ |
| 80 | #define BCMOS_BUF_OS_SPECIFIC |
| 81 | #define BCMOS_BUF_INLINE |
| 82 | #define BCMOS_INTERRUPT_INLINE |
| 83 | #define BCMOS_TIMESTAMP_INLINE |
| 84 | /* #define BCMOS_DMA_ALLOC_FREE_INLINE */ |
| 85 | #define BCMOS_VIRT_TO_PHYS_INLINE |
| 86 | #define BCMOS_CACHE_INLINE |
| 87 | /* Uncommentthe following line if h/w supports DMA cache coherency */ |
| 88 | /* #define BCMOS_DMA_CACHE_COHERENCY */ |
| 89 | |
| 90 | /* getchar, putchar are not support. define as inline and proviude dummy targets */ |
| 91 | #define BCMOS_GETCHAR_INLINE |
| 92 | #define BCMOS_PUTCHAR_INLINE |
| 93 | |
| 94 | #include "bcmos_common.h" |
| 95 | |
| 96 | static inline void bcm_pci_write32(volatile uint32_t *address, uint32_t value) |
| 97 | { |
| 98 | writel(value, address); |
| 99 | } |
| 100 | |
| 101 | static inline uint32_t bcm_pci_read32(const volatile uint32_t *address) |
| 102 | { |
| 103 | return readl(address); |
| 104 | } |
| 105 | |
| 106 | |
| 107 | void _bcmos_backtrace(void); |
| 108 | int bcmos_sys_vprintf(const char *format, va_list args); |
| 109 | |
| 110 | /* |
| 111 | * Memory allocation |
| 112 | */ |
| 113 | |
| 114 | /* Allocate DMAable memory from the main heap */ |
| 115 | static inline void *bcmos_alloc(uint32_t size) |
| 116 | { |
| 117 | return kmalloc(size, GFP_DMA); |
| 118 | } |
| 119 | |
| 120 | /* Release memory to the main pool */ |
| 121 | static inline void bcmos_free(void *ptr) |
| 122 | { |
| 123 | return kfree(ptr); |
| 124 | } |
| 125 | |
| 126 | static inline void *bcmos_alloc_not_cache(int32_t size) |
| 127 | { |
| 128 | return kmalloc(size, GFP_KERNEL); |
| 129 | } |
| 130 | static inline void bcmos_free_not_cache(void *dest) |
| 131 | { |
| 132 | kfree(dest); |
| 133 | } |
| 134 | /* |
| 135 | * Synchronization |
| 136 | */ |
| 137 | |
| 138 | /* Mutex control block */ |
| 139 | struct bcmos_mutex |
| 140 | { |
| 141 | struct mutex m; /**< linux kernel mutex */ |
| 142 | }; |
| 143 | |
| 144 | /* Create recursive mutex */ |
| 145 | static inline bcmos_errno bcmos_mutex_create(bcmos_mutex *mutex, uint32_t flags, const char *name) |
| 146 | { |
| 147 | mutex_init(&mutex->m); |
| 148 | return BCM_ERR_OK; |
| 149 | } |
| 150 | |
| 151 | /* Destroy mutex */ |
| 152 | static inline void bcmos_mutex_destroy(bcmos_mutex *mutex) |
| 153 | { |
| 154 | mutex_destroy(&mutex->m); |
| 155 | } |
| 156 | |
| 157 | /* Lock mutex */ |
| 158 | static inline void bcmos_mutex_lock(bcmos_mutex *mutex) |
| 159 | { |
| 160 | mutex_lock(&mutex->m); |
| 161 | } |
| 162 | |
| 163 | /* Release mutex */ |
| 164 | static inline void bcmos_mutex_unlock(bcmos_mutex *mutex) |
| 165 | { |
| 166 | mutex_unlock(&mutex->m); |
| 167 | } |
| 168 | |
| 169 | /** Fast lock control block */ |
| 170 | struct bcmos_fastlock |
| 171 | { |
| 172 | spinlock_t m; |
| 173 | }; |
| 174 | |
| 175 | /** Fastlock initializer. Can be used instead of calling bcmos_fastlock_init() */ |
| 176 | #define BCMOS_FASTLOCK_INITIALIZER { SPINLOCK_UNLOCKED } |
| 177 | |
| 178 | /* Init fastlock */ |
| 179 | static inline void bcmos_fastlock_init(bcmos_fastlock *lock, uint32_t flags) |
| 180 | { |
| 181 | spin_lock_init(&lock->m); |
| 182 | } |
| 183 | |
| 184 | /* Take fast lock */ |
| 185 | static inline long bcmos_fastlock_lock(bcmos_fastlock *lock) |
| 186 | { |
| 187 | unsigned long flags; |
| 188 | spin_lock_irqsave(&lock->m, flags); |
| 189 | return (long)flags; |
| 190 | } |
| 191 | |
| 192 | /* Release fast lock */ |
| 193 | static inline void bcmos_fastlock_unlock(bcmos_fastlock *lock, long flags) |
| 194 | { |
| 195 | spin_unlock_irqrestore(&lock->m, (unsigned long)flags); |
| 196 | } |
| 197 | |
| 198 | /** Semaphore control block */ |
| 199 | struct bcmos_sem |
| 200 | { |
| 201 | struct semaphore s; /**< linux kernel semaphore */ |
| 202 | }; |
| 203 | |
| 204 | /* Create semaphore */ |
| 205 | static inline bcmos_errno bcmos_sem_create(bcmos_sem *sem, uint32_t count, uint32_t flags, const char *name) |
| 206 | { |
| 207 | sema_init(&sem->s, count); |
| 208 | return BCM_ERR_OK; |
| 209 | } |
| 210 | |
| 211 | /* Destroy semaphore */ |
| 212 | static inline void bcmos_sem_destroy(bcmos_sem *sem) |
| 213 | { |
| 214 | } |
| 215 | |
| 216 | /* Wait for semaphore */ |
| 217 | bcmos_errno bcmos_sem_wait(bcmos_sem *sem, uint32_t timeout); |
| 218 | |
| 219 | /* Increment semaphore counter */ |
| 220 | static inline void bcmos_sem_post(bcmos_sem *sem) |
| 221 | { |
| 222 | up(&sem->s); |
| 223 | } |
| 224 | |
| 225 | /* |
| 226 | * Timers |
| 227 | */ |
| 228 | |
| 229 | /** System timer */ |
| 230 | struct bcmos_sys_timer |
| 231 | { |
| 232 | struct timer_list t; /**< linux timer */ |
| 233 | bcmos_sys_timer_handler handler; /**< Timer handler */ |
| 234 | void *data; /**< Parameter to be passed to the handler */ |
| 235 | }; |
| 236 | |
| 237 | /* Get current timestamp (us) */ |
| 238 | static inline uint32_t bcmos_timestamp(void) |
| 239 | { |
| 240 | struct timespec uptime; |
| 241 | do_posix_clock_monotonic_gettime(&uptime); |
| 242 | monotonic_to_bootbased(&uptime); |
| 243 | return uptime.tv_sec * USEC_PER_SEC + uptime.tv_nsec / NSEC_PER_USEC; |
| 244 | } |
| 245 | |
| 246 | /* Get current timestamp (us) */ |
| 247 | static inline uint64_t bcmos_timestamp64(void) |
| 248 | { |
| 249 | struct timespec uptime; |
| 250 | do_posix_clock_monotonic_gettime(&uptime); |
| 251 | monotonic_to_bootbased(&uptime); |
| 252 | return (uint64_t)uptime.tv_sec * USEC_PER_SEC + (uint64_t)uptime.tv_nsec / NSEC_PER_USEC; |
| 253 | } |
| 254 | |
| 255 | /* |
| 256 | * Task control |
| 257 | */ |
| 258 | |
| 259 | /** OS-specific task control block extension */ |
| 260 | typedef struct bcmos_sys_task |
| 261 | { |
| 262 | struct task_struct *t; |
| 263 | } bcmos_sys_task; |
| 264 | |
| 265 | /** Memory pool control block */ |
| 266 | struct bcmos_byte_pool |
| 267 | { |
| 268 | bcmos_byte_pool_parm parm; /**< Pool parameters */ |
| 269 | uint32_t allocated; /**< Number of bytes allocated */ |
| 270 | #ifdef BCMOS_MEM_DEBUG |
| 271 | uint32_t magic; /**< magic number */ |
| 272 | #define BCMOS_BYTE_POOL_VALID (('b'<<24) | ('y' << 16) | ('p' << 8) | 'o') |
| 273 | #define BCMOS_BYTE_POOL_DELETED (('b'<<24) | ('y' << 16) | ('p' << 8) | '~') |
| 274 | #endif |
| 275 | }; |
| 276 | |
| 277 | /* Transport / network buffer service */ |
| 278 | extern uint32_t bcmos_buf_default_headroom; |
| 279 | |
| 280 | /* |
| 281 | * Network / transport buffer |
| 282 | */ |
| 283 | |
| 284 | /* Data alignment. Should be a max lf L1, L2 cache line size */ |
| 285 | #define BCMOS_BUF_DATA_ALIGNMENT 128 |
| 286 | |
| 287 | /* Encapsulated skb */ |
| 288 | struct bcmos_buf |
| 289 | { |
| 290 | struct sk_buff skb; |
| 291 | }; |
| 292 | |
| 293 | /* Buffer list */ |
| 294 | typedef struct sk_buff_head bcmos_buf_queue; |
| 295 | |
| 296 | /* Allocate buffer */ |
| 297 | static inline bcmos_buf *bcmos_buf_alloc(uint32_t size) |
| 298 | { |
| 299 | /* Allocate extra 2 * BCMOS_BUF_DATA_ALIGNMENT to make sure that neither data start nor end |
| 300 | * end up in the middle of cache line |
| 301 | */ |
| 302 | struct sk_buff *skb = dev_alloc_skb(size + BCMTR_BUF_EXTRA_HEADROOM + 2 * BCMOS_BUF_DATA_ALIGNMENT - 1); |
| 303 | if (!skb) |
| 304 | return NULL; |
| 305 | #if BCMTR_BUF_EXTRA_HEADROOM |
| 306 | skb_reserve(skb, BCMTR_BUF_EXTRA_HEADROOM); |
| 307 | #endif |
| 308 | if ((long)skb->data & (BCMOS_BUF_DATA_ALIGNMENT - 1)) |
| 309 | { |
| 310 | skb_reserve(skb, BCMOS_BUF_DATA_ALIGNMENT - ((long)skb->data & (BCMOS_BUF_DATA_ALIGNMENT - 1))); |
| 311 | } |
| 312 | return (bcmos_buf *)skb; |
| 313 | } |
| 314 | |
| 315 | /* Release buffer */ |
| 316 | static inline void bcmos_buf_free(bcmos_buf *buf) |
| 317 | { |
| 318 | consume_skb(&buf->skb); |
| 319 | } |
| 320 | |
| 321 | /* Get data length */ |
| 322 | static inline uint32_t bcmos_buf_length(bcmos_buf *buf) |
| 323 | { |
| 324 | return buf->skb.len; |
| 325 | } |
| 326 | |
| 327 | /* Set data length */ |
| 328 | static inline bcmos_errno bcmos_buf_length_set(bcmos_buf *buf, uint32_t length) |
| 329 | { |
| 330 | if (unlikely(length > skb_tailroom(&buf->skb))) |
| 331 | { |
| 332 | BCMOS_TRACE_ERR("!!!%s: length=%u tailroom=%d\n", |
| 333 | __FUNCTION__, length, skb_tailroom(&buf->skb)); |
| 334 | return BCM_ERR_OVERFLOW; |
| 335 | } |
| 336 | buf->skb.len = length; |
| 337 | return BCM_ERR_OK; |
| 338 | } |
| 339 | |
| 340 | /* Get buffer data pointer. */ |
| 341 | static inline uint8_t *bcmos_buf_data(bcmos_buf *buf) |
| 342 | { |
| 343 | return buf->skb.data; |
| 344 | } |
| 345 | |
| 346 | /* Get buffer channel. */ |
| 347 | static inline uint8_t bcmos_buf_channel(bcmos_buf *buf) |
| 348 | { |
| 349 | return buf->skb.cb[0]; |
| 350 | } |
| 351 | |
| 352 | /* Set buffer channel. */ |
| 353 | static inline void bcmos_buf_channel_set(bcmos_buf *buf, uint8_t channel) |
| 354 | { |
| 355 | buf->skb.cb[0] = channel; |
| 356 | } |
| 357 | |
| 358 | /** Initialize buffer queue |
| 359 | * \param[in] q Buffer queue |
| 360 | */ |
| 361 | static inline void bcmos_buf_queue_init(bcmos_buf_queue *q) |
| 362 | { |
| 363 | skb_queue_head_init(q); |
| 364 | } |
| 365 | |
| 366 | /** Enqueue buffer |
| 367 | * |
| 368 | * Must be called under lock, e.g., q->lock |
| 369 | * |
| 370 | * \param[in] q Buffer queue |
| 371 | * \param[in] buf Buffer |
| 372 | */ |
| 373 | static inline void bcmos_buf_queue_put(bcmos_buf_queue *q, bcmos_buf *buf) |
| 374 | { |
| 375 | __skb_queue_tail(q, &buf->skb); |
| 376 | } |
| 377 | |
| 378 | /* Check if buffer queue is empty |
| 379 | * \param[in] q Buffer queue |
| 380 | * \returns TRUE if the queue is empty |
| 381 | */ |
| 382 | static inline bcmos_bool bcmos_buf_queue_is_empty(bcmos_buf_queue *q) |
| 383 | { |
| 384 | return (bcmos_bool)skb_queue_empty(q); |
| 385 | } |
| 386 | |
| 387 | /* Dequeue buffer |
| 388 | * |
| 389 | * Must be called under lock, e.g., q->lock |
| 390 | * |
| 391 | * Remove and return the 1st queued buffer. |
| 392 | * \param[in] q Buffer queue |
| 393 | * \returns the buffer pointer |
| 394 | */ |
| 395 | static inline bcmos_buf *bcmos_buf_queue_get(bcmos_buf_queue *q) |
| 396 | { |
| 397 | struct sk_buff *skb = __skb_dequeue(q); |
| 398 | return skb ? container_of(skb, bcmos_buf, skb) : NULL; |
| 399 | } |
| 400 | |
| 401 | /* Peek into queue and return the 1st buffer without dequeing it |
| 402 | * |
| 403 | * Must be called under lock, e.g., q->lock |
| 404 | * \param[in] q Buffer queue |
| 405 | * \returns the buffer pointer |
| 406 | */ |
| 407 | static inline bcmos_buf *bcmos_buf_queue_peek(bcmos_buf_queue *q) |
| 408 | { |
| 409 | struct sk_buff *skb = skb_peek(q); |
| 410 | return skb ? container_of(skb, bcmos_buf, skb) : NULL; |
| 411 | } |
| 412 | |
| 413 | /* |
| 414 | * dcache utilities |
| 415 | */ |
| 416 | /* Invalidate address area in data cache. Dirty cache lines content is discarded */ |
| 417 | static inline void bcmos_dcache_inv(void *start, uint32_t size) |
| 418 | { |
| 419 | #if defined(CONFIG_MIPS) |
| 420 | dma_cache_inv((unsigned long)start, size); |
| 421 | #elif defined(CONFIG_PPC) |
| 422 | if (((unsigned long)start & (L1_CACHE_BYTES - 1)) || (size & (L1_CACHE_BYTES - 1))) |
| 423 | flush_dcache_range((unsigned long)start, (unsigned long)start + size); |
| 424 | else |
| 425 | invalidate_dcache_range((unsigned long)start, (unsigned long)start + size); |
| 426 | #elif defined(CONFIG_UML) |
| 427 | /* Nothing to do */ |
| 428 | #else |
| 429 | #error Please implement bcmos_dcache_inv() |
| 430 | #endif |
| 431 | } |
| 432 | |
| 433 | /* Flush address area in data cache. Dirty cache lines are committed to memory */ |
| 434 | static inline void bcmos_dcache_flush(void *start, uint32_t size) |
| 435 | { |
| 436 | #if defined(CONFIG_MIPS) |
| 437 | dma_cache_wback((unsigned long)start, size); |
| 438 | #elif defined(CONFIG_PPC) |
| 439 | clean_dcache_range((unsigned long)start, (unsigned long)start + size); |
| 440 | #elif defined(CONFIG_UML) |
| 441 | /* Nothing to do */ |
| 442 | #else |
| 443 | #error Please implement bcmos_dcache_flush() |
| 444 | #endif |
| 445 | } |
| 446 | |
| 447 | /* |
| 448 | * Interrupt service |
| 449 | */ |
| 450 | |
| 451 | /* Connect system interrupt */ |
| 452 | static inline int bcmos_int_connect(int irq, int cpu, int flags, |
| 453 | int (*isr)(int irq, void *priv), const char *name, void *priv) |
| 454 | { |
| 455 | return request_irq(irq, (irq_handler_t)isr, flags, name, priv); |
| 456 | } |
| 457 | |
| 458 | /* Disconnect system interrupt */ |
| 459 | static inline void bcmos_int_disconnect(int irq, void *priv) |
| 460 | { |
| 461 | free_irq(irq, priv); |
| 462 | } |
| 463 | |
| 464 | /* Unmask IRQ */ |
| 465 | static inline void bcmos_int_enable(int irq) |
| 466 | { |
| 467 | enable_irq(irq); |
| 468 | } |
| 469 | |
| 470 | /* Mask IRQ */ |
| 471 | static inline void bcmos_int_disable(int irq) |
| 472 | { |
| 473 | disable_irq(irq); |
| 474 | } |
| 475 | |
| 476 | /* Check in-irq status */ |
| 477 | static inline int is_irq_mode(void) |
| 478 | { |
| 479 | return in_interrupt(); |
| 480 | } |
| 481 | |
| 482 | /* Check if interrupts are disabled */ |
| 483 | static inline int is_irq_disabled(void) |
| 484 | { |
| 485 | return irqs_disabled(); |
| 486 | } |
| 487 | |
| 488 | /* Convert virtual address to physical address */ |
| 489 | static inline unsigned long bcmos_virt_to_phys(void *va) |
| 490 | { |
| 491 | return virt_to_phys(va); |
| 492 | } |
| 493 | |
| 494 | /* write barrier */ |
| 495 | static inline void bcmos_barrier(void) |
| 496 | { |
| 497 | smp_wmb(); |
| 498 | } |
| 499 | static inline int bcmos_getchar(void) |
| 500 | { |
| 501 | return -1; |
| 502 | } |
| 503 | |
| 504 | static inline void bcmos_putchar(int c) |
| 505 | { |
| 506 | } |
| 507 | |
| 508 | #ifdef BCMOS_MSG_QUEUE_DOMAIN_SOCKET |
| 509 | #undef BCMOS_MSG_QUEUE_DOMAIN_SOCKET |
| 510 | #endif |
| 511 | |
| 512 | #ifdef BCMOS_MSG_QUEUE_UDP_SOCKET |
| 513 | #undef BCMOS_MSG_QUEUE_UDP_SOCKET |
| 514 | #endif |
| 515 | |
| 516 | /* 2nd part of OS-independent declarations */ |
| 517 | #include "bcmos_common2.h" |
| 518 | |
| 519 | #endif /* BCMOS_SYSTEM_H_ */ |