LXR qemu/pc-bios/s390-ccw/sclp.h

   1/*
   2 * SCLP ASCII access driver
   3 *
   4 * Copyright (c) 2013 Alexander Graf <agraf@suse.de>
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or (at
   7 * your option) any later version. See the COPYING file in the top-level
   8 * directory.
   9 */
  10
  11#ifndef SCLP_H
  12#define SCLP_H
  13
  14/* SCLP command codes */
  15#define SCLP_CMDW_READ_SCP_INFO                 0x00020001
  16#define SCLP_CMDW_READ_SCP_INFO_FORCED          0x00120001
  17#define SCLP_CMD_READ_EVENT_DATA                0x00770005
  18#define SCLP_CMD_WRITE_EVENT_DATA               0x00760005
  19#define SCLP_CMD_READ_EVENT_DATA                0x00770005
  20#define SCLP_CMD_WRITE_EVENT_DATA               0x00760005
  21#define SCLP_CMD_WRITE_EVENT_MASK               0x00780005
  22
  23/* SCLP response codes */
  24#define SCLP_RC_NORMAL_READ_COMPLETION          0x0010
  25#define SCLP_RC_NORMAL_COMPLETION               0x0020
  26#define SCLP_RC_INVALID_SCLP_COMMAND            0x01f0
  27#define SCLP_RC_CONTAINED_EQUIPMENT_CHECK       0x0340
  28#define SCLP_RC_INSUFFICIENT_SCCB_LENGTH        0x0300
  29#define SCLP_RC_INVALID_FUNCTION                0x40f0
  30#define SCLP_RC_NO_EVENT_BUFFERS_STORED         0x60f0
  31#define SCLP_RC_INVALID_SELECTION_MASK          0x70f0
  32#define SCLP_RC_INCONSISTENT_LENGTHS            0x72f0
  33#define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR       0x73f0
  34#define SCLP_RC_INVALID_MASK_LENGTH             0x74f0
  35
  36/* Service Call Control Block (SCCB) and its elements */
  37
  38#define SCCB_SIZE 4096
  39
  40#define SCLP_VARIABLE_LENGTH_RESPONSE           0x80
  41#define SCLP_EVENT_BUFFER_ACCEPTED              0x80
  42
  43#define SCLP_FC_NORMAL_WRITE                    0
  44
  45typedef struct SCCBHeader {
  46    uint16_t length;
  47    uint8_t function_code;
  48    uint8_t control_mask[3];
  49    uint16_t response_code;
  50} __attribute__((packed)) SCCBHeader;
  51
  52#define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader))
  53
  54typedef struct ReadInfo {
  55    SCCBHeader h;
  56    uint16_t rnmax;
  57    uint8_t rnsize;
  58    uint8_t reserved[13];
  59    uint8_t loadparm[LOADPARM_LEN];
  60} __attribute__((packed)) ReadInfo;
  61
  62typedef struct SCCB {
  63    SCCBHeader h;
  64    char data[SCCB_DATA_LEN];
  65 } __attribute__((packed)) SCCB;
  66
  67/* SCLP event types */
  68#define SCLP_EVENT_ASCII_CONSOLE_DATA           0x1a
  69#define SCLP_EVENT_SIGNAL_QUIESCE               0x1d
  70
  71/* SCLP event masks */
  72#define SCLP_EVENT_MASK_SIGNAL_QUIESCE          0x00000008
  73#define SCLP_EVENT_MASK_MSG_ASCII               0x00000040
  74
  75#define SCLP_UNCONDITIONAL_READ                 0x00
  76#define SCLP_SELECTIVE_READ                     0x01
  77
  78typedef struct WriteEventMask {
  79    SCCBHeader h;
  80    uint16_t _reserved;
  81    uint16_t mask_length;
  82    uint32_t cp_receive_mask;
  83    uint32_t cp_send_mask;
  84    uint32_t send_mask;
  85    uint32_t receive_mask;
  86} __attribute__((packed)) WriteEventMask;
  87
  88typedef struct EventBufferHeader {
  89    uint16_t length;
  90    uint8_t  type;
  91    uint8_t  flags;
  92    uint16_t _reserved;
  93} __attribute__((packed)) EventBufferHeader;
  94
  95typedef struct WriteEventData {
  96    SCCBHeader h;
  97    EventBufferHeader ebh;
  98    char data[0];
  99} __attribute__((packed)) WriteEventData;
 100
 101typedef struct ReadEventData {
 102    SCCBHeader h;
 103    EventBufferHeader ebh;
 104    uint32_t mask;
 105} __attribute__((packed)) ReadEventData;
 106
 107#define __pa(x) (x)
 108
 109#endif /* SCLP_H */
 110