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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _SYS_DRCTL_H
#define _SYS_DRCTL_H
#ifdef __cplusplus
extern "C" {
#endif
#define DRCTL_DEV "/devices/pseudo/drctl@0:drctl"
typedef enum {
DRCTL_CPU_CONFIG_REQUEST = 1,
DRCTL_CPU_CONFIG_NOTIFY,
DRCTL_CPU_UNCONFIG_REQUEST,
DRCTL_CPU_UNCONFIG_NOTIFY,
DRCTL_MEM_CONFIG_REQUEST,
DRCTL_MEM_CONFIG_NOTIFY,
DRCTL_MEM_UNCONFIG_REQUEST,
DRCTL_MEM_UNCONFIG_NOTIFY,
DRCTL_IO_CONFIG_REQUEST,
DRCTL_IO_CONFIG_NOTIFY,
DRCTL_IO_UNCONFIG_REQUEST,
DRCTL_IO_UNCONFIG_NOTIFY,
DRCTL_DRC_BLOCK
} drctl_cmds_t;
/*
* Responses to/from the daemon for a reconfig request.
*/
typedef enum {
DRCTL_STATUS_INIT, /* to daemon */
DRCTL_STATUS_ALLOW, /* from daemon */
DRCTL_STATUS_DENY, /* from daemon */
DRCTL_STATUS_CONFIG_SUCCESS, /* to daemon */
DRCTL_STATUS_CONFIG_FAILURE /* to daemon */
} drctl_status_t;
/*
* Each resource descriptor consists of a common header
* followed by a resource-specific structure.
*/
typedef struct drctl_rsrc_cpu {
int id;
} drctl_rsrc_cpu_t;
typedef struct drctl_rsrc_memory {
uint64_t size;
uint64_t addr;
} drctl_rsrc_mem_t;
typedef struct drctl_rsrc_dev {
char path[1];
} drctl_rsrc_dev_t;
typedef struct drctl_rsrc {
drctl_status_t status;
uint64_t offset;
union {
drctl_rsrc_cpu_t cpu;
drctl_rsrc_mem_t mem;
drctl_rsrc_dev_t dev;
} un;
} drctl_rsrc_t;
#define res_cpu_id un.cpu.id
#define res_mem_size un.mem.size
#define res_mem_addr un.mem.addr
#define res_dev_path un.dev.path
/*
* Response structure passed back by drctl to its clients
* (resource-specific DR modules).
*/
typedef enum {
DRCTL_RESP_ERR,
DRCTL_RESP_OK
} drctl_resp_type_t;
typedef struct drctl_resp {
drctl_resp_type_t resp_type;
union {
char err_msg[1];
drctl_rsrc_t resources[1];
} un;
} drctl_resp_t;
#define resp_err_msg un.err_msg
#define resp_resources un.resources
/*
* Message sent to DR daemon
*/
typedef struct drd_msg {
uint_t cmd;
uint_t count;
int flags;
drctl_rsrc_t data[1];
} drd_msg_t;
typedef void *drctl_cookie_t;
/*
* DR RSMs (resource-specific modules) call these functions to
* initialize or finalize a DR request. A request may include
* multiple resources of the same type. The _init call returns
* a cookie which must be supplied on by the corresponding
* _fini call.
*/
extern int drctl_config_init(int, int,
drctl_rsrc_t *, int, drctl_resp_t **, size_t *, drctl_cookie_t);
extern int drctl_config_fini(drctl_cookie_t, drctl_rsrc_t *, int);
extern void drctl_block(void);
extern int drctl_tryblock(void);
extern void drctl_unblock(void);
/*
* Values for the 2nd arg (flags) of drctl_config_init
*/
#define DRCTL_FLAG_FORCE 1
#ifdef __cplusplus
}
#endif
#endif /* _SYS_DRCTL_H */
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