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 45 typedef 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 54 typedef 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 62 typedef 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 78 typedef 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 88 typedef struct EventBufferHeader { 89 uint16_t length; 90 uint8_t type; 91 uint8_t flags; 92 uint16_t _reserved; 93 } __attribute__((packed)) EventBufferHeader; 94 95 typedef struct WriteEventData { 96 SCCBHeader h; 97 EventBufferHeader ebh; 98 char data[0]; 99 } __attribute__((packed)) WriteEventData; 100 101 typedef 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