9a22473c70
Obtain the loadparm value stored in SCP Read Info by performing a SCLP Read Info request. Rename sclp-ascii.c to sclp.c to reflect the changed scope of the file. Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
/*
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* SCLP ASCII access driver
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*
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* Copyright (c) 2013 Alexander Graf <agraf@suse.de>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#ifndef SCLP_H
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#define SCLP_H
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/* SCLP command codes */
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#define SCLP_CMDW_READ_SCP_INFO 0x00020001
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#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
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#define SCLP_CMD_READ_EVENT_DATA 0x00770005
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#define SCLP_CMD_WRITE_EVENT_DATA 0x00760005
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#define SCLP_CMD_READ_EVENT_DATA 0x00770005
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#define SCLP_CMD_WRITE_EVENT_DATA 0x00760005
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#define SCLP_CMD_WRITE_EVENT_MASK 0x00780005
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/* SCLP response codes */
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#define SCLP_RC_NORMAL_READ_COMPLETION 0x0010
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#define SCLP_RC_NORMAL_COMPLETION 0x0020
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#define SCLP_RC_INVALID_SCLP_COMMAND 0x01f0
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#define SCLP_RC_CONTAINED_EQUIPMENT_CHECK 0x0340
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#define SCLP_RC_INSUFFICIENT_SCCB_LENGTH 0x0300
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#define SCLP_RC_INVALID_FUNCTION 0x40f0
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#define SCLP_RC_NO_EVENT_BUFFERS_STORED 0x60f0
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#define SCLP_RC_INVALID_SELECTION_MASK 0x70f0
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#define SCLP_RC_INCONSISTENT_LENGTHS 0x72f0
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#define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR 0x73f0
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#define SCLP_RC_INVALID_MASK_LENGTH 0x74f0
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/* Service Call Control Block (SCCB) and its elements */
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#define SCCB_SIZE 4096
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#define SCLP_VARIABLE_LENGTH_RESPONSE 0x80
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#define SCLP_EVENT_BUFFER_ACCEPTED 0x80
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#define SCLP_FC_NORMAL_WRITE 0
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typedef struct SCCBHeader {
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uint16_t length;
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uint8_t function_code;
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uint8_t control_mask[3];
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uint16_t response_code;
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} __attribute__((packed)) SCCBHeader;
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#define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader))
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typedef struct ReadInfo {
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SCCBHeader h;
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uint16_t rnmax;
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uint8_t rnsize;
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uint8_t reserved[13];
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uint8_t loadparm[8];
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} __attribute__((packed)) ReadInfo;
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typedef struct SCCB {
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SCCBHeader h;
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char data[SCCB_DATA_LEN];
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} __attribute__((packed)) SCCB;
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/* SCLP event types */
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#define SCLP_EVENT_ASCII_CONSOLE_DATA 0x1a
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#define SCLP_EVENT_SIGNAL_QUIESCE 0x1d
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/* SCLP event masks */
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#define SCLP_EVENT_MASK_SIGNAL_QUIESCE 0x00000008
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#define SCLP_EVENT_MASK_MSG_ASCII 0x00000040
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#define SCLP_UNCONDITIONAL_READ 0x00
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#define SCLP_SELECTIVE_READ 0x01
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typedef struct WriteEventMask {
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SCCBHeader h;
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uint16_t _reserved;
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uint16_t mask_length;
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uint32_t cp_receive_mask;
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uint32_t cp_send_mask;
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uint32_t send_mask;
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uint32_t receive_mask;
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} __attribute__((packed)) WriteEventMask;
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typedef struct EventBufferHeader {
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uint16_t length;
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uint8_t type;
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uint8_t flags;
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uint16_t _reserved;
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} __attribute__((packed)) EventBufferHeader;
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typedef struct WriteEventData {
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SCCBHeader h;
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EventBufferHeader ebh;
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char data[0];
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} __attribute__((packed)) WriteEventData;
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typedef struct ReadEventData {
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SCCBHeader h;
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EventBufferHeader ebh;
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uint32_t mask;
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} __attribute__((packed)) ReadEventData;
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#define __pa(x) (x)
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#endif /* SCLP_H */
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