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} __attribute__((packed)) ReadInfo; 59 60typedef struct SCCB { 61 SCCBHeader h; 62 char data[SCCB_DATA_LEN]; 63 } __attribute__((packed)) SCCB; 64 65/* SCLP event types */ 66#define SCLP_EVENT_ASCII_CONSOLE_DATA 0x1a 67#define SCLP_EVENT_SIGNAL_QUIESCE 0x1d 68 69/* SCLP event masks */ 70#define SCLP_EVENT_MASK_SIGNAL_QUIESCE 0x00000008 71#define SCLP_EVENT_MASK_MSG_ASCII 0x00000040 72 73#define SCLP_UNCONDITIONAL_READ 0x00 74#define SCLP_SELECTIVE_READ 0x01 75 76typedef struct WriteEventMask { 77 SCCBHeader h; 78 uint16_t _reserved; 79 uint16_t mask_length; 80 uint32_t cp_receive_mask; 81 uint32_t cp_send_mask; 82 uint32_t send_mask; 83 uint32_t receive_mask; 84} __attribute__((packed)) WriteEventMask; 85 86typedef struct EventBufferHeader { 87 uint16_t length; 88 uint8_t type; 89 uint8_t flags; 90 uint16_t _reserved; 91} __attribute__((packed)) EventBufferHeader; 92 93typedef struct WriteEventData { 94 SCCBHeader h; 95 EventBufferHeader ebh; 96 char data[0]; 97} __attribute__((packed)) WriteEventData; 98 99typedef struct ReadEventData { 100 SCCBHeader h; 101 EventBufferHeader ebh; 102 uint32_t mask; 103} __attribute__((packed)) ReadEventData; 104 105#define __pa(x) (x) 106 107#endif /* SCLP_H */ 108