compatmac.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:5k
- /*
- * mtd/include/compatmac.h
- *
- * $Id: compatmac.h,v 1.4 2000/07/03 10:01:38 dwmw2 Exp $
- *
- * Extensions and omissions from the normal 'linux/compatmac.h'
- * files. hopefully this will end up empty as the 'real' one
- * becomes fully-featured.
- */
- /* First, include the parts which the kernel is good enough to provide
- * to us
- */
-
- #ifndef __LINUX_MTD_COMPATMAC_H__
- #define __LINUX_MTD_COMPATMAC_H__
- #include <linux/compatmac.h>
- #include <linux/types.h> /* used later in this header */
- #include <linux/module.h>
- #ifndef LINUX_VERSION_CODE
- #include <linux/version.h>
- #endif
- #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
- #include <linux/vmalloc.h>
- #endif
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2,0,0)
- # error "This kernel is too old: not supported by this file"
- #endif
- /* Modularization issues */
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,18)
- # define __USE_OLD_SYMTAB__
- # define EXPORT_NO_SYMBOLS register_symtab(NULL);
- # define REGISTER_SYMTAB(tab) register_symtab(tab)
- #else
- # define REGISTER_SYMTAB(tab) /* nothing */
- #endif
- #ifdef __USE_OLD_SYMTAB__
- # define __MODULE_STRING(s) /* nothing */
- # define MODULE_PARM(v,t) /* nothing */
- # define MODULE_PARM_DESC(v,t) /* nothing */
- # define MODULE_AUTHOR(n) /* nothing */
- # define MODULE_DESCRIPTION(d) /* nothing */
- # define MODULE_SUPPORTED_DEVICE(n) /* nothing */
- #endif
- /*
- * "select" changed in 2.1.23. The implementation is twin, but this
- * header is new
- */
- #if LINUX_VERSION_CODE > KERNEL_VERSION(2,1,22)
- # include <linux/poll.h>
- #else
- # define __USE_OLD_SELECT__
- #endif
- /* Other change in the fops are solved using pseudo-types */
- #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
- # define lseek_t long long
- # define lseek_off_t long long
- #else
- # define lseek_t int
- # define lseek_off_t off_t
- #endif
- /* changed the prototype of read/write */
- #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0) || defined(__alpha__)
- # define count_t unsigned long
- # define read_write_t long
- #else
- # define count_t int
- # define read_write_t int
- #endif
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,31)
- # define release_t void
- # define release_return(x) return
- #else
- # define release_t int
- # define release_return(x) return (x)
- #endif
- #if LINUX_VERSION_CODE < 0x20300
- #define __exit
- #endif
- #if LINUX_VERSION_CODE < 0x20200
- #define __init
- #else
- #include <linux/init.h>
- #endif
- #if LINUX_VERSION_CODE < 0x20300
- #define init_MUTEX(x) do {*(x) = MUTEX;} while (0)
- #define RQFUNC_ARG void
- #define blkdev_dequeue_request(req) do {CURRENT = req->next;} while (0)
- #else
- #define RQFUNC_ARG request_queue_t *q
- #endif
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2,2,0)
- #define __MOD_INC_USE_COUNT(mod)
- (atomic_inc(&(mod)->uc.usecount), (mod)->flags |= MOD_VISITED|MOD_USED_ONCE)
- #define __MOD_DEC_USE_COUNT(mod)
- (atomic_dec(&(mod)->uc.usecount), (mod)->flags |= MOD_VISITED)
- #endif
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)
- #define DECLARE_WAIT_QUEUE_HEAD(x) struct wait_queue *x = NULL
- #define init_waitqueue_head init_waitqueue
- static inline int try_inc_mod_count(struct module *mod)
- {
- if (mod)
- __MOD_INC_USE_COUNT(mod);
- return 1;
- }
- #endif
- /* Yes, I'm aware that it's a fairly ugly hack.
- Until the __constant_* macros appear in Linus' own kernels, this is
- the way it has to be done.
- DW 19/1/00
- */
- #include <asm/byteorder.h>
- #ifndef __constant_cpu_to_le16
- #ifdef __BIG_ENDIAN
- #define __constant_cpu_to_le64(x) ___swab64((x))
- #define __constant_le64_to_cpu(x) ___swab64((x))
- #define __constant_cpu_to_le32(x) ___swab32((x))
- #define __constant_le32_to_cpu(x) ___swab32((x))
- #define __constant_cpu_to_le16(x) ___swab16((x))
- #define __constant_le16_to_cpu(x) ___swab16((x))
- #define __constant_cpu_to_be64(x) ((__u64)(x))
- #define __constant_be64_to_cpu(x) ((__u64)(x))
- #define __constant_cpu_to_be32(x) ((__u32)(x))
- #define __constant_be32_to_cpu(x) ((__u32)(x))
- #define __constant_cpu_to_be16(x) ((__u16)(x))
- #define __constant_be16_to_cpu(x) ((__u16)(x))
- #else
- #ifdef __LITTLE_ENDIAN
- #define __constant_cpu_to_le64(x) ((__u64)(x))
- #define __constant_le64_to_cpu(x) ((__u64)(x))
- #define __constant_cpu_to_le32(x) ((__u32)(x))
- #define __constant_le32_to_cpu(x) ((__u32)(x))
- #define __constant_cpu_to_le16(x) ((__u16)(x))
- #define __constant_le16_to_cpu(x) ((__u16)(x))
- #define __constant_cpu_to_be64(x) ___swab64((x))
- #define __constant_be64_to_cpu(x) ___swab64((x))
- #define __constant_cpu_to_be32(x) ___swab32((x))
- #define __constant_be32_to_cpu(x) ___swab32((x))
- #define __constant_cpu_to_be16(x) ___swab16((x))
- #define __constant_be16_to_cpu(x) ___swab16((x))
- #else
- #error No (recognised) endianness defined (unless it,s PDP)
- #endif /* __LITTLE_ENDIAN */
- #endif /* __BIG_ENDIAN */
- #endif /* ifndef __constant_cpu_to_le16 */
- #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)
- #define mod_init_t int __init
- #define mod_exit_t void
- #else
- #define mod_init_t static int __init
- #define mod_exit_t static void __exit
- #endif
- #ifndef THIS_MODULE
- #ifdef MODULE
- #define THIS_MODULE (&__this_module)
- #else
- #define THIS_MODULE (NULL)
- #endif
- #endif
- #if LINUX_VERSION_CODE < 0x20300
- #include <linux/interrupt.h>
- #define spin_lock_bh(lock) do {start_bh_atomic();spin_lock(lock);} while(0)
- #define spin_unlock_bh(lock) do {spin_unlock(lock);end_bh_atomic();} while(0)
- #else
- #include <asm/softirq.h>
- #include <linux/spinlock.h>
- #endif
- #endif /* __LINUX_MTD_COMPATMAC_H__ */