9d92a7e1b0
This patch adds a driver for subchannels of type chsc. A device /dev/chsc is created which may be used to issue ioctls to: - obtain information about the machine's I/O configuration - dynamically change the machine's I/O configuration via asynchronous chsc commands Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
128 lines
2.4 KiB
C
128 lines
2.4 KiB
C
/*
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* ioctl interface for /dev/chsc
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*
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* Copyright 2008 IBM Corp.
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* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
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*/
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#ifndef _ASM_CHSC_H
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#define _ASM_CHSC_H
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#include <asm/chpid.h>
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#include <asm/schid.h>
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struct chsc_async_header {
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__u16 length;
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__u16 code;
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__u32 cmd_dependend;
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__u32 key : 4;
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__u32 : 28;
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struct subchannel_id sid;
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} __attribute__ ((packed));
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struct chsc_async_area {
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struct chsc_async_header header;
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__u8 data[PAGE_SIZE - 16 /* size of chsc_async_header */];
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} __attribute__ ((packed));
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struct chsc_response_struct {
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__u16 length;
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__u16 code;
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__u32 parms;
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__u8 data[PAGE_SIZE - 8];
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} __attribute__ ((packed));
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struct chsc_chp_cd {
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struct chp_id chpid;
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int m;
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int fmt;
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struct chsc_response_struct cpcb;
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};
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struct chsc_cu_cd {
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__u16 cun;
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__u8 cssid;
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int m;
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int fmt;
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struct chsc_response_struct cucb;
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};
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struct chsc_sch_cud {
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struct subchannel_id schid;
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int fmt;
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struct chsc_response_struct scub;
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};
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struct conf_id {
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int m;
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__u8 cssid;
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__u8 ssid;
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};
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struct chsc_conf_info {
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struct conf_id id;
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int fmt;
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struct chsc_response_struct scid;
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};
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struct ccl_parm_chpid {
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int m;
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struct chp_id chp;
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};
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struct ccl_parm_cssids {
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__u8 f_cssid;
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__u8 l_cssid;
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};
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struct chsc_comp_list {
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struct {
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enum {
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CCL_CU_ON_CHP = 1,
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CCL_CHP_TYPE_CAP = 2,
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CCL_CSS_IMG = 4,
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CCL_CSS_IMG_CONF_CHAR = 5,
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CCL_IOP_CHP = 6,
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} ctype;
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int fmt;
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struct ccl_parm_chpid chpid;
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struct ccl_parm_cssids cssids;
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} req;
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struct chsc_response_struct sccl;
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};
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struct chsc_dcal {
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struct {
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enum {
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DCAL_CSS_IID_PN = 4,
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} atype;
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__u32 list_parm[2];
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int fmt;
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} req;
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struct chsc_response_struct sdcal;
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};
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struct chsc_cpd_info {
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struct chp_id chpid;
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int m;
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int fmt;
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int rfmt;
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int c;
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struct chsc_response_struct chpdb;
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};
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#define CHSC_IOCTL_MAGIC 'c'
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#define CHSC_START _IOWR(CHSC_IOCTL_MAGIC, 0x81, struct chsc_async_area)
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#define CHSC_INFO_CHANNEL_PATH _IOWR(CHSC_IOCTL_MAGIC, 0x82, \
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struct chsc_chp_cd)
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#define CHSC_INFO_CU _IOWR(CHSC_IOCTL_MAGIC, 0x83, struct chsc_cu_cd)
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#define CHSC_INFO_SCH_CU _IOWR(CHSC_IOCTL_MAGIC, 0x84, struct chsc_sch_cud)
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#define CHSC_INFO_CI _IOWR(CHSC_IOCTL_MAGIC, 0x85, struct chsc_conf_info)
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#define CHSC_INFO_CCL _IOWR(CHSC_IOCTL_MAGIC, 0x86, struct chsc_comp_list)
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#define CHSC_INFO_CPD _IOWR(CHSC_IOCTL_MAGIC, 0x87, struct chsc_cpd_info)
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#define CHSC_INFO_DCAL _IOWR(CHSC_IOCTL_MAGIC, 0x88, struct chsc_dcal)
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#endif
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