1/* 2 * drivers/s390/char/hwc_rw.h 3 * interface to the HWC-read/write driver 4 * 5 * S390 version 6 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation 7 * Author(s): Martin Peschke <mpeschke@de.ibm.com> 8 */ 9 10#ifndef __HWC_RW_H__ 11#define __HWC_RW_H__ 12 13#include <linux/ioctl.h> 14 15typedef struct { 16 17 void (*move_input) (unsigned char *, unsigned int); 18 19 void (*wake_up) (void); 20} hwc_high_level_calls_t; 21 22struct _hwc_request; 23 24typedef void hwc_callback_t (struct _hwc_request *); 25 26typedef struct _hwc_request { 27 void *block; 28 u32 word; 29 hwc_callback_t *callback; 30 void *data; 31} __attribute__ ((packed)) 32 33hwc_request_t; 34 35#define HWC_ASCEBC(x) ((MACHINE_IS_VM ? _ascebc[x] : _ascebc_500[x])) 36 37#define HWC_EBCASC_STR(s,c) ((MACHINE_IS_VM ? EBCASC(s,c) : EBCASC_500(s,c))) 38 39#define HWC_ASCEBC_STR(s,c) ((MACHINE_IS_VM ? ASCEBC(s,c) : ASCEBC_500(s,c))) 40 41#define IN_HWCB 1 42#define IN_WRITE_BUF 2 43#define IN_BUFS_TOTAL (IN_HWCB | IN_WRITE_BUF) 44 45typedef unsigned short int ioctl_htab_t; 46typedef unsigned char ioctl_echo_t; 47typedef unsigned short int ioctl_cols_t; 48typedef signed char ioctl_nl_t; 49typedef unsigned short int ioctl_obuf_t; 50typedef unsigned char ioctl_case_t; 51typedef unsigned char ioctl_delim_t; 52 53typedef struct { 54 ioctl_htab_t width_htab; 55 ioctl_echo_t echo; 56 ioctl_cols_t columns; 57 ioctl_nl_t final_nl; 58 ioctl_obuf_t max_hwcb; 59 ioctl_obuf_t kmem_hwcb; 60 ioctl_case_t tolower; 61 ioctl_delim_t delim; 62} hwc_ioctls_t; 63 64static hwc_ioctls_t _hwc_ioctls; 65 66#define HWC_IOCTL_LETTER 'B' 67 68#define TIOCHWCSHTAB _IOW(HWC_IOCTL_LETTER, 0, _hwc_ioctls.width_htab) 69 70#define TIOCHWCSECHO _IOW(HWC_IOCTL_LETTER, 1, _hwc_ioctls.echo) 71 72#define TIOCHWCSCOLS _IOW(HWC_IOCTL_LETTER, 2, _hwc_ioctls.columns) 73 74#define TIOCHWCSNL _IOW(HWC_IOCTL_LETTER, 4, _hwc_ioctls.final_nl) 75 76#define TIOCHWCSOBUF _IOW(HWC_IOCTL_LETTER, 5, _hwc_ioctls.max_hwcb) 77 78#define TIOCHWCSINIT _IO(HWC_IOCTL_LETTER, 6) 79 80#define TIOCHWCSCASE _IOW(HWC_IOCTL_LETTER, 7, _hwc_ioctls.tolower) 81 82#define TIOCHWCSDELIM _IOW(HWC_IOCTL_LETTER, 9, _hwc_ioctls.delim) 83 84#define TIOCHWCGHTAB _IOR(HWC_IOCTL_LETTER, 10, _hwc_ioctls.width_htab) 85 86#define TIOCHWCGECHO _IOR(HWC_IOCTL_LETTER, 11, _hwc_ioctls.echo) 87 88#define TIOCHWCGCOLS _IOR(HWC_IOCTL_LETTER, 12, _hwc_ioctls.columns) 89 90#define TIOCHWCGNL _IOR(HWC_IOCTL_LETTER, 14, _hwc_ioctls.final_nl) 91 92#define TIOCHWCGOBUF _IOR(HWC_IOCTL_LETTER, 15, _hwc_ioctls.max_hwcb) 93 94#define TIOCHWCGINIT _IOR(HWC_IOCTL_LETTER, 16, _hwc_ioctls) 95 96#define TIOCHWCGCASE _IOR(HWC_IOCTL_LETTER, 17, _hwc_ioctls.tolower) 97 98#define TIOCHWCGDELIM _IOR(HWC_IOCTL_LETTER, 19, _hwc_ioctls.delim) 99 100#define TIOCHWCGKBUF _IOR(HWC_IOCTL_LETTER, 20, _hwc_ioctls.max_hwcb) 101 102#define TIOCHWCGCURR _IOR(HWC_IOCTL_LETTER, 21, _hwc_ioctls) 103 104#ifndef __HWC_RW_C__ 105 106extern int hwc_init (void); 107 108extern int hwc_write (int from_user, const unsigned char *, unsigned int); 109 110extern unsigned int hwc_chars_in_buffer (unsigned char); 111 112extern unsigned int hwc_write_room (unsigned char); 113 114extern void hwc_flush_buffer (unsigned char); 115 116extern void hwc_unblank (void); 117 118extern signed int hwc_ioctl (unsigned int, unsigned long); 119 120extern void do_hwc_interrupt (void); 121 122extern int hwc_printk (const char *,...); 123 124extern signed int hwc_register_calls (hwc_high_level_calls_t *); 125 126extern signed int hwc_unregister_calls (hwc_high_level_calls_t *); 127 128extern int hwc_send (hwc_request_t *); 129 130#endif 131 132#endif 133