hwc_rw.h
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上传日期:2013-02-24
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文件大小:3k
- /*
- * drivers/s390/char/hwc_rw.h
- * interface to the HWC-read/write driver
- *
- * S390 version
- * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Peschke <mpeschke@de.ibm.com>
- */
- #ifndef __HWC_RW_H__
- #define __HWC_RW_H__
- #include <linux/ioctl.h>
- typedef struct {
- void (*move_input) (unsigned char *, unsigned int);
- void (*wake_up) (void);
- } hwc_high_level_calls_t;
- struct _hwc_request;
- typedef void hwc_callback_t (struct _hwc_request *);
- typedef struct _hwc_request {
- void *block;
- u32 word;
- hwc_callback_t *callback;
- void *data;
- } __attribute__ ((packed))
- hwc_request_t;
- #define HWC_ASCEBC(x) ((MACHINE_IS_VM ? _ascebc[x] : _ascebc_500[x]))
- #define HWC_EBCASC_STR(s,c) ((MACHINE_IS_VM ? EBCASC(s,c) : EBCASC_500(s,c)))
- #define HWC_ASCEBC_STR(s,c) ((MACHINE_IS_VM ? ASCEBC(s,c) : ASCEBC_500(s,c)))
- #define IN_HWCB 1
- #define IN_WRITE_BUF 2
- #define IN_BUFS_TOTAL (IN_HWCB | IN_WRITE_BUF)
- typedef unsigned short int ioctl_htab_t;
- typedef unsigned char ioctl_echo_t;
- typedef unsigned short int ioctl_cols_t;
- typedef signed char ioctl_nl_t;
- typedef unsigned short int ioctl_obuf_t;
- typedef unsigned char ioctl_case_t;
- typedef unsigned char ioctl_delim_t;
- typedef struct {
- ioctl_htab_t width_htab;
- ioctl_echo_t echo;
- ioctl_cols_t columns;
- ioctl_nl_t final_nl;
- ioctl_obuf_t max_hwcb;
- ioctl_obuf_t kmem_hwcb;
- ioctl_case_t tolower;
- ioctl_delim_t delim;
- } hwc_ioctls_t;
- static hwc_ioctls_t _hwc_ioctls;
- #define HWC_IOCTL_LETTER 'B'
- #define TIOCHWCSHTAB _IOW(HWC_IOCTL_LETTER, 0, _hwc_ioctls.width_htab)
- #define TIOCHWCSECHO _IOW(HWC_IOCTL_LETTER, 1, _hwc_ioctls.echo)
- #define TIOCHWCSCOLS _IOW(HWC_IOCTL_LETTER, 2, _hwc_ioctls.columns)
- #define TIOCHWCSNL _IOW(HWC_IOCTL_LETTER, 4, _hwc_ioctls.final_nl)
- #define TIOCHWCSOBUF _IOW(HWC_IOCTL_LETTER, 5, _hwc_ioctls.max_hwcb)
- #define TIOCHWCSINIT _IO(HWC_IOCTL_LETTER, 6)
- #define TIOCHWCSCASE _IOW(HWC_IOCTL_LETTER, 7, _hwc_ioctls.tolower)
- #define TIOCHWCSDELIM _IOW(HWC_IOCTL_LETTER, 9, _hwc_ioctls.delim)
- #define TIOCHWCGHTAB _IOR(HWC_IOCTL_LETTER, 10, _hwc_ioctls.width_htab)
- #define TIOCHWCGECHO _IOR(HWC_IOCTL_LETTER, 11, _hwc_ioctls.echo)
- #define TIOCHWCGCOLS _IOR(HWC_IOCTL_LETTER, 12, _hwc_ioctls.columns)
- #define TIOCHWCGNL _IOR(HWC_IOCTL_LETTER, 14, _hwc_ioctls.final_nl)
- #define TIOCHWCGOBUF _IOR(HWC_IOCTL_LETTER, 15, _hwc_ioctls.max_hwcb)
- #define TIOCHWCGINIT _IOR(HWC_IOCTL_LETTER, 16, _hwc_ioctls)
- #define TIOCHWCGCASE _IOR(HWC_IOCTL_LETTER, 17, _hwc_ioctls.tolower)
- #define TIOCHWCGDELIM _IOR(HWC_IOCTL_LETTER, 19, _hwc_ioctls.delim)
- #define TIOCHWCGKBUF _IOR(HWC_IOCTL_LETTER, 20, _hwc_ioctls.max_hwcb)
- #define TIOCHWCGCURR _IOR(HWC_IOCTL_LETTER, 21, _hwc_ioctls)
- #ifndef __HWC_RW_C__
- extern int hwc_init (void);
- extern int hwc_write (int from_user, const unsigned char *, unsigned int);
- extern unsigned int hwc_chars_in_buffer (unsigned char);
- extern unsigned int hwc_write_room (unsigned char);
- extern void hwc_flush_buffer (unsigned char);
- extern void hwc_unblank (void);
- extern signed int hwc_ioctl (unsigned int, unsigned long);
- extern void do_hwc_interrupt (void);
- extern int hwc_printk (const char *,...);
- extern signed int hwc_register_calls (hwc_high_level_calls_t *);
- extern signed int hwc_unregister_calls (hwc_high_level_calls_t *);
- extern int hwc_send (hwc_request_t *);
- #endif
- #endif