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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) 1990, 1991 UNIX System Laboratories, Inc. */
/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
/* All Rights Reserved */
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_XENCONS_H
#define _SYS_XENCONS_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/tty.h>
#include <sys/ksynch.h>
#include <sys/dditypes.h>
#include <xen/public/io/console.h>
/*
* Xencons tracing macros. These are a similar to some macros in sys/vtrace.h.
*
* XXX - Needs review: would it be better to use the macros in sys/vtrace.h ?
*/
#ifdef DEBUG
#define DEBUGWARN0(fac, format) \
if (debug & (fac)) \
cmn_err(CE_WARN, format)
#define DEBUGNOTE0(fac, format) \
if (debug & (fac)) \
cmn_err(CE_NOTE, format)
#define DEBUGNOTE1(fac, format, arg1) \
if (debug & (fac)) \
cmn_err(CE_NOTE, format, arg1)
#define DEBUGNOTE2(fac, format, arg1, arg2) \
if (debug & (fac)) \
cmn_err(CE_NOTE, format, arg1, arg2)
#define DEBUGNOTE3(fac, format, arg1, arg2, arg3) \
if (debug & (fac)) \
cmn_err(CE_NOTE, format, arg1, arg2, arg3)
#define DEBUGCONT0(fac, format) \
if (debug & (fac)) \
cmn_err(CE_CONT, format)
#define DEBUGCONT1(fac, format, arg1) \
if (debug & (fac)) \
cmn_err(CE_CONT, format, arg1)
#define DEBUGCONT2(fac, format, arg1, arg2) \
if (debug & (fac)) \
cmn_err(CE_CONT, format, arg1, arg2)
#define DEBUGCONT3(fac, format, arg1, arg2, arg3) \
if (debug & (fac)) \
cmn_err(CE_CONT, format, arg1, arg2, arg3)
#define DEBUGCONT4(fac, format, arg1, arg2, arg3, arg4) \
if (debug & (fac)) \
cmn_err(CE_CONT, format, arg1, arg2, arg3, arg4)
#define DEBUGCONT10(fac, format, \
arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10) \
if (debug & (fac)) \
cmn_err(CE_CONT, format, \
arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10)
#else
#define DEBUGWARN0(fac, format)
#define DEBUGNOTE0(fac, format)
#define DEBUGNOTE1(fac, format, arg1)
#define DEBUGNOTE2(fac, format, arg1, arg2)
#define DEBUGNOTE3(fac, format, arg1, arg2, arg3)
#define DEBUGCONT0(fac, format)
#define DEBUGCONT1(fac, format, arg1)
#define DEBUGCONT2(fac, format, arg1, arg2)
#define DEBUGCONT3(fac, format, arg1, arg2, arg3)
#define DEBUGCONT4(fac, format, arg1, arg2, arg3, arg4)
#define DEBUGCONT10(fac, format, \
arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10)
#endif
/* enum value for sw and hw flow control action */
typedef enum {
FLOW_CHECK,
FLOW_STOP,
FLOW_START
} async_flowc_action;
#define async_stopc async_ttycommon.t_stopc
#define async_startc async_ttycommon.t_startc
/*
* Console instance data.
* Each of the fields in this structure is required to be protected by a
* mutex lock at the highest priority at which it can be altered.
*/
struct xencons {
int flags; /* random flags */
struct asyncline *priv; /* protocol private data -- asyncline */
dev_info_t *dip; /* dev_info */
int unit; /* which port */
kmutex_t excl; /* adaptive mutex */
kcondvar_t excl_cv; /* condition variable */
struct cons_polledio polledio; /* polled I/O functions */
unsigned char pollbuf[60]; /* polled I/O data */
int polldix; /* polled data buffer index */
int polllen; /* polled data buffer length */
volatile struct xencons_interface *ifp; /* console ring buffers */
int console_irq; /* dom0 console interrupt */
int evtchn; /* console event channel */
};
/*
* Asychronous protocol private data structure for ASY.
* Each of the fields in the structure is required to be protected by
* the lower priority lock except the fields that are set only at
* base level but cleared (with out lock) at interrupt level.
*/
struct asyncline {
int async_flags; /* random flags */
kcondvar_t async_flags_cv; /* condition variable for flags */
dev_t async_dev; /* device major/minor numbers */
mblk_t *async_xmitblk; /* transmit: active msg block */
struct xencons *async_common; /* device common data */
tty_common_t async_ttycommon; /* tty driver common data */
bufcall_id_t async_wbufcid; /* id for pending write-side bufcall */
timeout_id_t async_polltid; /* softint poll timeout id */
timeout_id_t async_dtrtid; /* delaying DTR turn on */
timeout_id_t async_utbrktid; /* hold minimum untimed break time id */
/*
* The following fields are protected by the excl_hi lock.
* Some, such as async_flowc, are set only at the base level and
* cleared (without the lock) only by the interrupt level.
*/
uchar_t *async_optr; /* output pointer */
int async_ocnt; /* output count */
ushort_t async_rput; /* producing pointer for input */
ushort_t async_rget; /* consuming pointer for input */
int async_inflow_source; /* input flow control type */
union {
struct {
uchar_t _hw; /* overrun (hw) */
uchar_t _sw; /* overrun (sw) */
} _a;
ushort_t uover_overrun;
} async_uover;
#define async_overrun async_uover._a.uover_overrun
#define async_hw_overrun async_uover._a._hw
#define async_sw_overrun async_uover._a._sw
short async_ext; /* modem status change count */
short async_work; /* work to do flag */
};
/* definitions for async_flags field */
#define ASYNC_EXCL_OPEN 0x10000000 /* exclusive open */
#define ASYNC_WOPEN 0x00000001 /* waiting for open to complete */
#define ASYNC_ISOPEN 0x00000002 /* open is complete */
#define ASYNC_STOPPED 0x00000010 /* output is stopped */
#define ASYNC_PROGRESS 0x00001000 /* made progress on output effort */
#define ASYNC_CLOSING 0x00002000 /* processing close on stream */
#define ASYNC_SW_IN_FLOW 0x00020000 /* sw input flow control in effect */
#define ASYNC_SW_OUT_FLW 0x00040000 /* sw output flow control in effect */
#define ASYNC_SW_IN_NEEDED 0x00080000 /* sw input flow control char is */
/* needed to be sent */
#define ASYNC_OUT_FLW_RESUME 0x00100000 /* output need to be resumed */
/* because of transition of flow */
/* control from stop to start */
/* definitions for asy_flags field */
#define ASY_CONSOLE 0x00000080
/* definitions for async_inflow_source field in struct asyncline */
#define IN_FLOW_NULL 0x00000000
#define IN_FLOW_STREAMS 0x00000002
#define IN_FLOW_USER 0x00000004
#define XENCONS_BURST 128 /* burst size for console writes */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_XENCONS_H */
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