1 files changed, 159 insertions, 0 deletions

diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h
new file mode 100644
index 000000000000..2c71d6ee7b5b
--- /dev/null
+++ b/drivers/s390/char/sclp.h
@@ -0,0 +1,159 @@
+/*
+ *  drivers/s390/char/sclp.h
+ *
+ *  S390 version
+ *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Martin Peschke <mpeschke@de.ibm.com>
+ *               Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+
+#ifndef __SCLP_H__
+#define __SCLP_H__
+
+#include <linux/types.h>
+#include <linux/list.h>
+
+#include <asm/ebcdic.h>
+
+/* maximum number of pages concerning our own memory management */
+#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
+#define MAX_CONSOLE_PAGES       4
+
+#define EvTyp_OpCmd             0x01
+#define EvTyp_Msg               0x02
+#define EvTyp_StateChange       0x08
+#define EvTyp_PMsgCmd           0x09
+#define EvTyp_CntlProgOpCmd     0x20
+#define EvTyp_CntlProgIdent     0x0B
+#define EvTyp_SigQuiesce        0x1D
+#define EvTyp_VT220Msg          0x1A
+
+#define EvTyp_OpCmd_Mask        0x80000000
+#define EvTyp_Msg_Mask          0x40000000
+#define EvTyp_StateChange_Mask  0x01000000
+#define EvTyp_PMsgCmd_Mask      0x00800000
+#define EvTyp_CtlProgOpCmd_Mask 0x00000001
+#define EvTyp_CtlProgIdent_Mask 0x00200000
+#define EvTyp_SigQuiesce_Mask   0x00000008
+#define EvTyp_VT220Msg_Mask     0x00000040
+
+#define GnrlMsgFlgs_DOM         0x8000
+#define GnrlMsgFlgs_SndAlrm     0x4000
+#define GnrlMsgFlgs_HoldMsg     0x2000
+
+#define LnTpFlgs_CntlText       0x8000
+#define LnTpFlgs_LabelText      0x4000
+#define LnTpFlgs_DataText       0x2000
+#define LnTpFlgs_EndText        0x1000
+#define LnTpFlgs_PromptText     0x0800
+
+typedef unsigned int sclp_cmdw_t;
+
+#define SCLP_CMDW_READDATA      0x00770005
+#define SCLP_CMDW_WRITEDATA     0x00760005
+#define SCLP_CMDW_WRITEMASK     0x00780005
+
+#define GDS_ID_MDSMU            0x1310
+#define GDS_ID_MDSRouteInfo     0x1311
+#define GDS_ID_AgUnWrkCorr      0x1549
+#define GDS_ID_SNACondReport    0x1532
+#define GDS_ID_CPMSU            0x1212
+#define GDS_ID_RoutTargInstr    0x154D
+#define GDS_ID_OpReq            0x8070
+#define GDS_ID_TextCmd          0x1320
+
+#define GDS_KEY_SelfDefTextMsg  0x31
+
+typedef u32 sccb_mask_t;        /* ATTENTION: assumes 32bit mask !!! */
+
+struct sccb_header {
+        u16     length;
+        u8      function_code;
+        u8      control_mask[3];
+        u16     response_code;
+} __attribute__((packed));
+
+struct gds_subvector {
+        u8      length;
+        u8      key;
+} __attribute__((packed));
+
+struct gds_vector {
+        u16     length;
+        u16     gds_id;
+} __attribute__((packed));
+
+struct evbuf_header {
+        u16     length;
+        u8      type;
+        u8      flags;
+        u16     _reserved;
+} __attribute__((packed));
+
+struct sclp_req {
+        struct list_head list;          /* list_head for request queueing. */
+        sclp_cmdw_t command;            /* sclp command to execute */
+        void    *sccb;                  /* pointer to the sccb to execute */
+        char    status;                 /* status of this request */
+        int     start_count;            /* number of SVCs done for this req */
+        /* Callback that is called after reaching final status. */
+        void (*callback)(struct sclp_req *, void *data);
+        void *callback_data;
+};
+
+#define SCLP_REQ_FILLED   0x00  /* request is ready to be processed */
+#define SCLP_REQ_QUEUED   0x01  /* request is queued to be processed */
+#define SCLP_REQ_RUNNING  0x02  /* request is currently running */
+#define SCLP_REQ_DONE     0x03  /* request is completed successfully */
+#define SCLP_REQ_FAILED   0x05  /* request is finally failed */
+
+/* function pointers that a high level driver has to use for registration */
+/* of some routines it wants to be called from the low level driver */
+struct sclp_register {
+        struct list_head list;
+        /* event masks this user is registered for */
+        sccb_mask_t receive_mask;
+        sccb_mask_t send_mask;
+        /* actually present events */
+        sccb_mask_t sclp_receive_mask;
+        sccb_mask_t sclp_send_mask;
+        /* called if event type availability changes */
+        void (*state_change_fn)(struct sclp_register *);
+        /* called for events in cp_receive_mask/sclp_receive_mask */
+        void (*receiver_fn)(struct evbuf_header *);
+};
+
+/* externals from sclp.c */
+int sclp_add_request(struct sclp_req *req);
+void sclp_sync_wait(void);
+int sclp_register(struct sclp_register *reg);
+void sclp_unregister(struct sclp_register *reg);
+int sclp_remove_processed(struct sccb_header *sccb);
+int sclp_deactivate(void);
+int sclp_reactivate(void);
+
+/* useful inlines */
+
+/* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
+/* translate single character from ASCII to EBCDIC */
+static inline unsigned char
+sclp_ascebc(unsigned char ch)
+{
+        return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
+}
+
+/* translate string from EBCDIC to ASCII */
+static inline void
+sclp_ebcasc_str(unsigned char *str, int nr)
+{
+        (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
+}
+
+/* translate string from ASCII to EBCDIC */
+static inline void
+sclp_ascebc_str(unsigned char *str, int nr)
+{
+        (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
+}
+
+#endif   /* __SCLP_H__ */