Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / s390 / char / sclp_rw.h

diff --git a/kernel/drivers/s390/char/sclp_rw.h b/kernel/drivers/s390/char/sclp_rw.h
new file mode 100644 (file)
index 0000000..7a7bfc9
--- /dev/null
+++ b/kernel/drivers/s390/char/sclp_rw.h
@@ -0,0 +1,101 @@
+/*
+ * interface to the SCLP-read/write driver
+ *
+ * Copyright IBM Corporation 1999, 2009
+ *
+ * Author(s): Martin Peschke <mpeschke@de.ibm.com>
+ *           Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+
+#ifndef __SCLP_RW_H__
+#define __SCLP_RW_H__
+
+#include <linux/list.h>
+
+struct mto {
+       u16 length;
+       u16 type;
+       u16 line_type_flags;
+       u8  alarm_control;
+       u8  _reserved[3];
+} __attribute__((packed));
+
+struct go {
+       u16 length;
+       u16 type;
+       u32 domid;
+       u8  hhmmss_time[8];
+       u8  th_time[3];
+       u8  reserved_0;
+       u8  dddyyyy_date[7];
+       u8  _reserved_1;
+       u16 general_msg_flags;
+       u8  _reserved_2[10];
+       u8  originating_system_name[8];
+       u8  job_guest_name[8];
+} __attribute__((packed));
+
+struct mdb_header {
+       u16 length;
+       u16 type;
+       u32 tag;
+       u32 revision_code;
+} __attribute__((packed));
+
+struct mdb {
+       struct mdb_header header;
+       struct go go;
+} __attribute__((packed));
+
+struct msg_buf {
+       struct evbuf_header header;
+       struct mdb mdb;
+} __attribute__((packed));
+
+struct write_sccb {
+       struct sccb_header header;
+       struct msg_buf msg_buf;
+} __attribute__((packed));
+
+/* The number of empty mto buffers that can be contained in a single sccb. */
+#define NR_EMPTY_MTO_PER_SCCB ((PAGE_SIZE - sizeof(struct sclp_buffer) - \
+                       sizeof(struct write_sccb)) / sizeof(struct mto))
+
+/*
+ * data structure for information about list of SCCBs (only for writing),
+ * will be located at the end of a SCCBs page
+ */
+struct sclp_buffer {
+       struct list_head list;          /* list_head for sccb_info chain */
+       struct sclp_req request;
+       struct write_sccb *sccb;
+       char *current_line;
+       int current_length;
+       int retry_count;
+       /* output format settings */
+       unsigned short columns;
+       unsigned short htab;
+       /* statistics about this buffer */
+       unsigned int mto_char_sum;      /* # chars in sccb */
+       unsigned int mto_number;        /* # mtos in sccb */
+       /* Callback that is called after reaching final status. */
+       void (*callback)(struct sclp_buffer *, int);
+};
+
+int sclp_rw_init(void);
+struct sclp_buffer *sclp_make_buffer(void *, unsigned short, unsigned short);
+void *sclp_unmake_buffer(struct sclp_buffer *);
+int sclp_buffer_space(struct sclp_buffer *);
+int sclp_write(struct sclp_buffer *buffer, const unsigned char *, int);
+int sclp_emit_buffer(struct sclp_buffer *,void (*)(struct sclp_buffer *,int));
+void sclp_set_columns(struct sclp_buffer *, unsigned short);
+void sclp_set_htab(struct sclp_buffer *, unsigned short);
+int sclp_chars_in_buffer(struct sclp_buffer *);
+
+#ifdef CONFIG_SCLP_CONSOLE
+void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event);
+#else
+static inline void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event) { }
+#endif
+
+#endif /* __SCLP_RW_H__ */