#ifndef _V4L2_OSDEP_H_ #define _V4L2_OSDEP_H_ #include "platform/platform_stdlib.h" #include "basic_types.h" //#include "osdep_api.h" //deprecated use osdep_service.h instead #include "osdep_service.h" #include "usb_defs.h" #include "usb_errno.h" //#include "hal_util.h" #include "dlist.h" #define V4L2_LAYER_DEBUG 0 #if V4L2_LAYER_DEBUG #define V4L2_PRINTF(fmt, args...) printf("\n\r%s: " fmt, __FUNCTION__, ## args) #define V4L2_ERROR(fmt, args...) printf("\n\r%s: " fmt, __FUNCTION__, ## args) #else #define V4L2_PRINTF(fmt, args...) #define V4L2_ERROR(fmt, args...) printf("\n\r%s: " fmt, __FUNCTION__, ## args) #endif /* misc items */ #ifndef ssize_t #define ssize_t SSIZE_T #endif #ifndef size_t #define size_t SIZE_T #endif #ifndef __user #define __user #endif #ifndef loff_t #define loff_t long #endif #ifndef __u8 #define __u8 u8 #endif #ifndef __u16 #define __u16 u16 #endif #ifndef __u32 #define __u32 u32 #endif #ifndef __u64 #define __u64 u64 #endif #ifndef __s8 #define __s8 s8 #endif #ifndef __s16 #define __s16 s16 #endif #ifndef __s32 #define __s32 s32 #endif #ifndef __s64 #define __s64 s64 #endif #ifndef spinlock_t #define spinlock_t _lock #endif #ifndef gfp_t #define gfp_t u32 #endif #ifndef _atomic_spin_lock_irqsave #define _atomic_spin_lock_irqsave(p, flags) save_and_cli() #endif #ifndef _atomic_spin_unlock_irqrestore #define _atomic_spin_unlock_irqrestore(p, flags) restore_flags() #endif #ifndef local_irq_save #define local_irq_save(flags) save_and_cli() #endif #ifndef local_irq_restore #define local_irq_restore(flags) restore_flags() #endif #ifndef cris_atomic_save #define cris_atomic_save(addr, flags) local_irq_save(flags) #endif #ifndef cris_atomic_restore #define cris_atomic_restore(addr, flags) local_irq_restore(flags) #endif /* * abs() handles unsigned and signed longs, ints, shorts and chars. For all * input types abs() returns a signed long. * abs() should not be used for 64-bit types (s64, u64, long long) - use abs64() * for those. */ #ifndef abs #define abs(x) ((x >= 0) ? (x) : (x * -1)) #endif #ifndef min #define min(x, y) ((x) < (y) ? (x) : (y)) #endif #ifndef max #define max(x, y) ((x) > (y) ? (x) : (y)) #endif #ifndef min_t #define min_t(type, x, y) ({ \ type __min1 = (x); \ type __min2 = (y); \ (__min1 < __min2) ? (__min1) : (__min2); }) #endif #ifndef max_t #define max_t(type, x, y) ({ \ type __max1 = (x); \ type __max2 = (y); \ (__max1 > __max2) ? (__max1) : (__max2); }) #endif #ifndef max_tt #define max_tt(ret,type,x,y) do{ \ type __max1 = (x); \ type __max2 = (y); \ ret = (__max1 > __max2) ? (__max1) : (__max2); }while(0) #endif #ifndef min_tt #define min_tt(ret,type, x, y) do{ \ type __min1 = (x); \ type __min2 = (y); \ ret = (__min1 < __min2) ? (__min1) : (__min2); }while(0) #endif /** * container_of - cast a member of a structure out to the containing structure * @p(ptr): the pointer to the member. * @t(type): the type of the container struct this is embedded in. * @m(member): the name of the member within the struct. * */ #ifndef container_of #define container_of(ptr, type, member) \ ((type *)((char *)(ptr)-(SIZE_T)(&((type *)0)->member))) #endif /** * list_next_entry - get the next element in list * @pos: the type * to cursor * @member: the name of the list_struct within the struct. */ #define list_next_entry(pos, member, type) \ list_entry((pos)->member.next, type, member) /** * list_for_each_entry_continue - continue iteration over list of given type * @pos: the type * to use as a loop cursor. * @head: the head for your list. * @member: the name of the list_struct within the struct. * * Continue to iterate over list of given type, continuing after * the current position. */ #define list_for_each_entry_continue(pos, head, member, type) \ for (pos = list_next_entry(pos, member, type); \ &pos->member != (head); \ pos = list_next_entry(pos, member, type)) /* spin lock */ #ifndef spin_lock_init #define spin_lock_init(plock) rtw_spinlock_init((plock)) #endif #ifndef spin_lock_free #define spin_lock_free(plock) rtw_spinlock_free((plock)) #endif #ifndef spin_lock #define spin_lock(plock) rtw_spin_lock((plock)) #endif #ifndef spin_unlock #define spin_unlock(plock) rtw_spin_unlock((plock)) #endif /* mutex */ #ifndef Mutex #define Mutex _mutex #endif #ifndef Mutex_Init #define Mutex_Init(pmutex) rtw_mutex_init((pmutex)) #endif #ifndef Mutex_Lock #define Mutex_Lock(pmutex) rtw_mutex_get((pmutex)) #endif #ifndef Mutex_Unlock #define Mutex_Unlock(pmutex) rtw_mutex_put((pmutex)) #endif #ifndef Mutex_Free #define Mutex_Free(pmutex) rtw_mutex_free((pmutex)) #endif /* semaphore */ #ifndef Sema #define Sema _sema #endif #ifndef Sema_Init #define Sema_Init(pmutex, pval) rtw_init_sema(pmutex, pval) #endif #ifndef Sema_Free #define Sema_Free(pmutex) rtw_free_sema(pmutex) #endif #ifndef Sema_Up #define Sema_Up(pmutex) rtw_up_sema(pmutex) #endif #ifndef Sema_Down #define Sema_Down(pmutex) rtw_down_sema(pmutex) #endif #ifndef Sema_Down_WithTimeout #define Sema_Down_WithTimeout(pmutex,ptimeout) rtw_down_timeout_sema(pmutex,ptimeout) // #endif /* Atomic integer operations */ #ifndef atomic_set #define atomic_set(v, i) ATOMIC_SET((v), (i)) #endif #ifndef atomic_read #define atomic_read(v) ATOMIC_READ((v)) #endif #ifndef atomic_add #define atomic_add(v, i) ATOMIC_ADD((v), (i)) #endif #ifndef atomic_sub #define atomic_sub(v, i) ATOMIC_SUB((v), (i)) #endif #ifndef atomic_inc #define atomic_inc(v) ATOMIC_INC((v)) #endif #ifndef atomic_dec #define atomic_dec(v) ATOMIC_DEC((v)) #endif // IOCTL ... #ifndef _IOC_NRBITS #define _IOC_NRBITS (8) #endif #ifndef _IOC_TYPEBITS #define _IOC_TYPEBITS (8) #endif #ifndef _IOC_SIZEBITS #define _IOC_SIZEBITS (14) #endif #ifndef _IOC_DIRBITS #define _IOC_DIRBITS (2) #endif #ifndef _IOC_NRMASK #define _IOC_NRMASK ((1 << _IOC_NRBITS) - 1) #endif #ifndef _IOC_TYPEMASK #define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS) - 1) #endif #ifndef _IOC_SIZEMASK #define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS) - 1) #endif #ifndef _IOC_DIRMASK #define _IOC_DIRMASK ((1 << _IOC_DIRBITS) - 1) #endif #ifndef _IOC_NRSHIFT #define _IOC_NRSHIFT (0) #endif #ifndef _IOC_TYPESHIFT #define _IOC_TYPESHIFT (_IOC_NRSHIFT + _IOC_NRBITS) #endif #ifndef _IOC_SIZESHIFT #define _IOC_SIZESHIFT (_IOC_TYPESHIFT + _IOC_TYPEBITS) #endif #ifndef _IOC_DIRSHIFT #define _IOC_DIRSHIFT (_IOC_SIZESHIFT + _IOC_SIZEBITS) #endif /* * Direction bits. */ #ifndef _IOC_NONE #define _IOC_NONE (0U) #endif #ifndef _IOC_WRITE #define _IOC_WRITE (1U) #endif #ifndef _IOC_READ #define _IOC_READ (2U) #endif /* * combine the four dir，type，nr，size parameters to one cmd parameter * */ #ifndef _IOC #define _IOC(dir,type,nr,size) \ (((dir) << _IOC_DIRSHIFT) | \ ((type) << _IOC_TYPESHIFT) | \ ((nr) << _IOC_NRSHIFT) | \ ((size) << _IOC_SIZESHIFT)) #endif /* * used to create IOCTL cmd */ #ifndef _IO #define _IO(type,nr) _IOC(_IOC_NONE,(type), (nr), 0) #endif #ifndef _IOR #define _IOR(type,nr,size) _IOC(_IOC_READ,(type), (nr), sizeof(size)) #endif #ifndef _IOW #define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type), (nr), sizeof(size)) #endif #ifndef _IOWR #define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE, (type), (nr), sizeof(size)) #endif /* * used to decode ioctl infoations.. */ #ifndef _IOC_DIR #define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) #endif #ifndef _IOC_TYPE #define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) #endif #ifndef _IOC_NR #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) #endif #ifndef _IOC_SIZE #define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK) #endif /* ...and for the drivers/sound files... */ #ifndef IOC_IN #define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) #endif #ifndef IOC_OUT #define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) #endif #ifndef IOC_INOUT #define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT) #endif #ifndef IOCSIZE_MASK #define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT) #endif #ifndef IOCSIZE_SHIFT #define IOCSIZE_SHIFT (_IOC_SIZESHIFT) #endif #ifndef DIV_ROUND_UP #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) #endif #ifndef BITS_PER_LONG #define BITS_PER_LONG (32) #endif #ifndef BITS_PER_LONG_LONG #define BITS_PER_LONG_LONG (32) #endif #ifndef BIT #define BIT(nr) (1UL << (nr)) #endif #ifndef BIT_ULL #define BIT_ULL(nr) (1ULL << (nr)) #endif #ifndef BIT_MASK #define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG)) #endif #ifndef BIT_WORD #define BIT_WORD(nr) ((nr) / BITS_PER_LONG) #endif #ifndef BIT_ULL_MASK #define BIT_ULL_MASK(nr) (1ULL << ((nr) % BITS_PER_LONG_LONG)) #endif #ifndef BIT_ULL_WORD #define BIT_ULL_WORD(nr) ((nr) / BITS_PER_LONG_LONG) #endif #ifndef BITS_PER_BYTE #define BITS_PER_BYTE (8) #endif #ifndef BITS_TO_LONGS #define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) #endif /* __ffs to find out the first exist 1 offset, from bit 0 ~ 31 */ #ifndef ffz #define ffz(x) __ffs(~(x)) #endif /* __builtin_constant_p is gcc build-in function to check the parameter is const or not */ #ifndef small_const_nbits #define small_const_nbits(nbits) \ (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) #endif /** * __ffs - find first bit in word. * @word: The word to search * * Undefined if no bit exists, so code should check against 0 first. */ static inline unsigned long __ffs(unsigned long word) { int num = 0; #if BITS_PER_LONG == 64 if ((word & 0xffffffff) == 0) { num += 32; word >>= 32; } #endif if ((word & 0xffff) == 0) { num += 16; word >>= 16; } if ((word & 0xff) == 0) { num += 8; word >>= 8; } if ((word & 0xf) == 0) { num += 4; word >>= 4; } if ((word & 0x3) == 0) { num += 2; word >>= 2; } if ((word & 0x1) == 0) num += 1; return num; } /** * __fls - find last (most-significant) set bit in a long word * @word: the word to search * * Undefined if no set bit exists, so code should check against 0 first. */ static inline unsigned long __fls(unsigned long word) { int num = BITS_PER_LONG - 1; #if BITS_PER_LONG == 64 if (!(word & (~0ul << 32))) { num -= 32; word <<= 32; } #endif if (!(word & (~0ul << (BITS_PER_LONG-16)))) { num -= 16; word <<= 16; } if (!(word & (~0ul << (BITS_PER_LONG-8)))) { num -= 8; word <<= 8; } if (!(word & (~0ul << (BITS_PER_LONG-4)))) { num -= 4; word <<= 4; } if (!(word & (~0ul << (BITS_PER_LONG-2)))) { num -= 2; word <<= 2; } if (!(word & (~0ul << (BITS_PER_LONG-1)))) num -= 1; return num; } /** * test_bit - Determine whether a bit is set * @nr: bit number to test * @addr: Address to start counting from */ static inline int test_bit(int nr, const volatile unsigned long *addr) { return ((1UL << (nr & 31)) & (addr[nr >> 5])) != 0; } /* * Find the first cleared bit in a memory region. */ static inline unsigned long find_first_zero_bit( const unsigned long *addr, unsigned long size) { const unsigned long *p = addr; unsigned long result = 0; unsigned long tmp; while (size & ~(BITS_PER_LONG-1)) { if (~(tmp = *(p++))) goto found; result += BITS_PER_LONG; size -= BITS_PER_LONG; } if (!size) return result; tmp = (*p) | (~0UL << size); if (tmp == ~0UL) /* Are any bits zero? */ return result + size; /* Nope. */ found: return result + ffz(tmp); //tmp = 0; //return result; } static inline unsigned long find_next_zero_bit( const unsigned long *addr,unsigned long size, unsigned long offset) { const unsigned long *p = addr + BIT_WORD(offset); // offset位于p指向的long地址32位空? unsigned long result = offset & ~(BITS_PER_LONG-1); // offset是第result?4字? unsigned long tmp; if (offset >= size) return size; size -= result; // ?整32位整倍?上 offset %= BITS_PER_LONG; // offset位于32位的第几位 if (offset) { // offset不在一?long?据的第0位上,在1-31位中[luther.gliethttp] tmp = *(p++); tmp |= ~0UL >> (BITS_PER_LONG - offset); // ?0-offset?据填充上1. if (size < BITS_PER_LONG) // 不足32bits goto found_first; if (~tmp) // 取非非0?明含有0值 goto found_middle; size -= BITS_PER_LONG; // 如果上面~tmp等于0,那么?明?*p?据?32位全1.[luther.gliethttp] result += BITS_PER_LONG; } while (size & ~(BITS_PER_LONG-1)) { // 好了,?行到?里,我?的offset已??在4字?的第0位上,下面?行 if (~(tmp = *(p++))) // 4字?快速查?.如果~tmp非0,?明?32位?据中含有0?据,找到.[luther.gliethttp] goto found_middle; result += BITS_PER_LONG; // 到下一?4字?空? size -= BITS_PER_LONG; // ?少4字??据 } if (!size) // size等于0,?明首先size等于4字?整倍?,其次所有?据已?查完, return result; // 所有?据全部?1,?有??0位,result等于size.[luther.gliethttp] tmp = *p; // size不是32位整倍?,?剩几?bit?有?查,???行下面?查工作.[luther.gliethtp] found_first: tmp |= ~0UL << size; // ?在0-size?有效?据,size-31?未使用空?,所以先?size-31置成全1. if (tmp == ~0UL) /* Are any bits zero? */ // 如果tmp全1,那么?明就?找找1? return result + size; /* Nope. */ // result+size就等于函??入的??size大小.[luther.gliethttp] found_middle: return result + ffz(tmp); // 我?在32位?据的0-31中??必定存在0位值,?算他是第几位.[luther.gliethttp] } //int find_next_zero_bit(const void * p, int size, int offset); //int find_first_bit(const unsigned long *p, unsigned size); //int find_next_bit(const unsigned long *p, int size, int offset); /** * set_bit - Atomically set a bit in memory * @nr: the bit to set * @addr: the address to start counting from * * This function is atomic and may not be reordered. See __set_bit() * if you do not require the atomic guarantees. * * Note: there are no guarantees that this function will not be reordered * on non x86 architectures, so if you are writing portable code, * make sure not to rely on its reordering guarantees. * * Note that @nr may be almost arbitrarily large; this function is not * restricted to acting on a single-word quantity. */ static inline void set_bit(int nr, volatile unsigned long *addr) { unsigned long mask = BIT_MASK(nr); unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); unsigned long flags; //taskENTER_CRITICAL(); _atomic_spin_lock_irqsave(p, flags); *p |= mask; _atomic_spin_unlock_irqrestore(p, flags); //taskEXIT_CRITICAL(); } /** * clear_bit - Clears a bit in memory * @nr: Bit to clear * @addr: Address to start counting from * * clear_bit() is atomic and may not be reordered. However, it does * not contain a memory barrier, so if it is used for locking purposes, * you should call smp_mb__before_clear_bit() and/or smp_mb__after_clear_bit() * in order to ensure changes are visible on other processors. */ static inline void clear_bit(int nr, volatile unsigned long *addr) { unsigned long mask = BIT_MASK(nr); unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); unsigned long flags; _atomic_spin_lock_irqsave(p, flags); //taskENTER_CRITICAL(); *p &= ~mask; _atomic_spin_unlock_irqrestore(p, flags); //taskEXIT_CRITICAL(); } /** * change_bit - Toggle a bit in memory * @nr: Bit to change * @addr: Address to start counting from * * change_bit() is atomic and may not be reordered. It may be * reordered on other architectures than x86. * Note that @nr may be almost arbitrarily large; this function is not * restricted to acting on a single-word quantity. */ static inline void change_bit(int nr, volatile unsigned long *addr) { unsigned long mask = BIT_MASK(nr); unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); unsigned long flags; //taskENTER_CRITICAL(); _atomic_spin_lock_irqsave(p, flags); *p ^= mask; _atomic_spin_unlock_irqrestore(p, flags); //taskEXIT_CRITICAL(); } /** * test_and_set_bit - Set a bit and return its old value * @nr: Bit to set * @addr: Address to count from * * This operation is atomic and cannot be reordered. * It may be reordered on other architectures than x86. * It also implies a memory barrier. */ static inline int test_and_set_bit(int nr, volatile unsigned long *addr) { unsigned long mask = BIT_MASK(nr); unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); unsigned long old; //unsigned long flags; //taskENTER_CRITICAL(); _atomic_spin_lock_irqsave(p, flags); old = *p; *p = old | mask; _atomic_spin_unlock_irqrestore(p, flags); //taskEXIT_CRITICAL(); return (old & mask) != 0; } /** * test_and_clear_bit - Clear a bit and return its old value * @nr: Bit to clear * @addr: Address to count from * * This operation is atomic and cannot be reordered. * It can be reorderdered on other architectures other than x86. * It also implies a memory barrier. */ static inline int test_and_clear_bit(int nr, volatile unsigned long *addr) { unsigned long mask = BIT_MASK(nr); unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); unsigned long old; unsigned long flags; //taskENTER_CRITICAL(); _atomic_spin_lock_irqsave(p, flags); old = *p; *p = old & ~mask; _atomic_spin_unlock_irqrestore(p, flags); //taskEXIT_CRITICAL(); return (old & mask) != 0; } /** * test_and_change_bit - Change a bit and return its old value * @nr: Bit to change * @addr: Address to count from * * This operation is atomic and cannot be reordered. * It also implies a memory barrier. */ static inline int test_and_change_bit(int nr, volatile unsigned long *addr) { unsigned long mask = BIT_MASK(nr); unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr); unsigned long old; unsigned long flags; _atomic_spin_lock_irqsave(p, flags); old = *p; *p = old ^ mask; _atomic_spin_unlock_irqrestore(p, flags); return (old & mask) != 0; } static inline int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1, const unsigned long *bitmap2, int bits) { int k; int nr = BITS_TO_LONGS(bits); unsigned long result = 0; for (k = 0; k < nr; k++) result |= (dst[k] = bitmap1[k] & ~bitmap2[k]); return result != 0; } static inline int bitmap_andnot(unsigned long *dst, const unsigned long *src1, const unsigned long *src2, int nbits) { // if (small_const_nbits(nbits)) // return (*dst = *src1 & ~(*src2)) != 0; return __bitmap_andnot(dst, src1, src2, nbits); } static inline int atomic_inc_return(volatile atomic_t *v) { unsigned long flags; int retval; cris_atomic_save(v, flags); retval = ++(v->counter); cris_atomic_restore(v, flags); return retval; } typedef __u16 __le16; typedef __u16 __be16; typedef __u32 __le32; typedef __u32 __be32; typedef __u64 __le64; typedef __u64 __be64; typedef __u16 __sum16; typedef __u32 __wsum; #endif /*_V4L2_OSDEP_H_*/