projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 62b74942 | 2 | * interface to the SCLP-read/write driver |
| 1da177e4 | 3 | * |
| 62b74942 MH |
4 | * Copyright IBM Corporation 1999, 2009 |
| 5 | * | |
| 6 | * Author(s): Martin Peschke <mpeschke@de.ibm.com> | |
| 7 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | |
| 1da177e4 LT |
8 | */ |
| 9 | ||
| 10 | #ifndef __SCLP_RW_H__ | |
| 11 | #define __SCLP_RW_H__ | |
| 12 | ||
| 13 | #include <linux/list.h> | |
| 14 | ||
| 15 | struct mto { | |
| 16 | u16 length; | |
| 17 | u16 type; | |
| 18 | u16 line_type_flags; | |
| 19 | u8 alarm_control; | |
| 20 | u8 _reserved[3]; | |
| 21 | } __attribute__((packed)); | |
| 22 | ||
| 23 | struct go { | |
| 24 | u16 length; | |
| 25 | u16 type; | |
| 26 | u32 domid; | |
| 27 | u8 hhmmss_time[8]; | |
| 28 | u8 th_time[3]; | |
| 29 | u8 reserved_0; | |
| 30 | u8 dddyyyy_date[7]; | |
| 31 | u8 _reserved_1; | |
| 32 | u16 general_msg_flags; | |
| 33 | u8 _reserved_2[10]; | |
| 34 | u8 originating_system_name[8]; | |
| 35 | u8 job_guest_name[8]; | |
| 36 | } __attribute__((packed)); | |
| 37 | ||
| 38 | struct mdb_header { | |
| 39 | u16 length; | |
| 40 | u16 type; | |
| 41 | u32 tag; | |
| 42 | u32 revision_code; | |
| 43 | } __attribute__((packed)); | |
| 44 | ||
| 45 | struct mdb { | |
| 46 | struct mdb_header header; | |
| 47 | struct go go; | |
| 48 | } __attribute__((packed)); | |
| 49 | ||
| 50 | struct msg_buf { | |
| 51 | struct evbuf_header header; | |
| 52 | struct mdb mdb; | |
| 53 | } __attribute__((packed)); | |
| 54 | ||
| 55 | struct write_sccb { | |
| 56 | struct sccb_header header; | |
| 57 | struct msg_buf msg_buf; | |
| 58 | } __attribute__((packed)); | |
| 59 | ||
| 60 | /* The number of empty mto buffers that can be contained in a single sccb. */ | |
| 61 | #define NR_EMPTY_MTO_PER_SCCB ((PAGE_SIZE - sizeof(struct sclp_buffer) - \ | |
| 62 | sizeof(struct write_sccb)) / sizeof(struct mto)) | |
| 63 | ||
| 64 | /* | |
| 65 | * data structure for information about list of SCCBs (only for writing), | |
| 66 | * will be located at the end of a SCCBs page | |
| 67 | */ | |
| 68 | struct sclp_buffer { | |
| 69 | struct list_head list; /* list_head for sccb_info chain */ | |
| 70 | struct sclp_req request; | |
| 71 | struct write_sccb *sccb; | |
| 72 | char *current_line; | |
| 73 | int current_length; | |
| 74 | int retry_count; | |
| 75 | /* output format settings */ | |
| 76 | unsigned short columns; | |
| 77 | unsigned short htab; | |
| 78 | /* statistics about this buffer */ | |
| 79 | unsigned int mto_char_sum; /* # chars in sccb */ | |
| 80 | unsigned int mto_number; /* # mtos in sccb */ | |
| 81 | /* Callback that is called after reaching final status. */ | |
| 82 | void (*callback)(struct sclp_buffer *, int); | |
| 83 | }; | |
| 84 | ||
| 85 | int sclp_rw_init(void); | |
| 86 | struct sclp_buffer *sclp_make_buffer(void *, unsigned short, unsigned short); | |
| 87 | void *sclp_unmake_buffer(struct sclp_buffer *); | |
| 88 | int sclp_buffer_space(struct sclp_buffer *); | |
| 89 | int sclp_write(struct sclp_buffer *buffer, const unsigned char *, int); | |
| 90 | int sclp_emit_buffer(struct sclp_buffer *,void (*)(struct sclp_buffer *,int)); | |
| 91 | void sclp_set_columns(struct sclp_buffer *, unsigned short); | |
| 92 | void sclp_set_htab(struct sclp_buffer *, unsigned short); | |
| 93 | int sclp_chars_in_buffer(struct sclp_buffer *); | |
| 94 | ||
| c9568fdd | 95 | #ifdef CONFIG_SCLP_CONSOLE |
| 62b74942 | 96 | void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event); |
| c9568fdd HC |
97 | #else |
| 98 | static inline void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event) { } | |
| 99 | #endif | |
| 100 | ||
| 1da177e4 | 101 | #endif /* __SCLP_RW_H__ */ |