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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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _QCN_H
#define _QCN_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* sun4v Console driver
*/
#include <sys/types.h>
#include <sys/stream.h>
#include <sys/tty.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/consdev.h>
#define RINGBITS 8 /* # of bits in ring ptrs */
#define RINGSIZE (1<<RINGBITS) /* size of ring */
#define RINGMASK (RINGSIZE-1)
#define RING_INIT(qsp) ((qsp)->qcn_rput = (qsp)->qcn_rget = 0)
#define RING_CNT(qsp) (((qsp)->qcn_rput - (qsp)->qcn_rget) & RINGMASK)
#define RING_POK(qsp, n) ((int)RING_CNT(qsp) < (int)(RINGSIZE-(n)))
#define RING_PUT(qsp, c) \
((qsp)->qcn_ring[(qsp)->qcn_rput++ & RINGMASK] = (uchar_t)(c))
#define RING_GET(qsp) ((qsp)->qcn_ring[(qsp)->qcn_rget++ & RINGMASK])
#define RING_ADDR(qsp) (&((qsp)->qcn_ring[(qsp)->qcn_rget & RINGMASK]))
#define RING_POFF(qsp) ((qsp)->qcn_rput & RINGMASK)
#define RING_GOFF(qsp) ((qsp)->qcn_rget & RINGMASK)
#define RING_LEFT(qsp) (RING_POFF(qsp) >= RING_GOFF(qsp) ? (RINGSIZE) - \
RING_POFF(qsp) : RING_GOFF(qsp) - RING_POFF(qsp))
#define RING_UPD(qsp, n) ((qsp)->qcn_rput += (n))
/*
* qcn driver's soft state structure
*/
typedef struct qcn {
/* mutexes */
kmutex_t qcn_hi_lock; /* protects qcn_t (soft state) */
kmutex_t qcn_lock; /* protects output queue */
/* stream queues */
queue_t *qcn_writeq; /* stream write queue */
queue_t *qcn_readq; /* stream read queue */
/* dev info */
dev_info_t *qcn_dip; /* dev_info */
/* for handling IOCTL messages */
bufcall_id_t qcn_wbufcid; /* for console ioctl */
tty_common_t qcn_tty; /* for console ioctl */
/* for console output timeout */
time_t qcn_sc_active; /* last time (sec) SC was active */
uint_t qcn_polling;
uchar_t qcn_rget;
uchar_t qcn_rput;
/* the following is protected by atomic operations */
volatile unsigned int qcn_soft_pend;
ddi_softint_handle_t qcn_softint_hdl;
uchar_t *qcn_ring;
ushort_t qcn_hangup;
ddi_intr_handle_t *qcn_htable; /* For array of interrupts */
int qcn_intr_type; /* What type of interrupt */
int qcn_intr_cnt; /* # of intrs count returned */
size_t qcn_intr_size; /* Size of intr array */
uint_t qcn_intr_pri; /* Interrupt priority */
uint_t qcn_rbuf_overflow;
/*
* support for console read/write support
*/
int (*cons_transmit)(queue_t *, mblk_t *);
void (*cons_receive)(void);
char *cons_write_buffer;
uint64_t cons_write_buf_ra;
uint64_t cons_read_buf_ra;
/*
* support for polled io
*/
cons_polledio_t qcn_polledio;
boolean_t qcn_char_available;
uint8_t qcn_hold_char;
} qcn_t;
/* Constants for qcn_soft_pend */
#define QCN_SP_IDL 0 /* qcn_soft_pend is idle - do trigger */
#define QCN_SP_DO 1 /* soft interrupt needs to be processed */
#define QCN_SP_IP 2 /* in process, if interrupt, set DO, no trig */
/* Constants used by promif routines */
#define QCN_CLNT_STR "CON_CLNT"
#define QCN_OBP_STR "CON_OBP"
/* alternate break sequence */
extern void (*abort_seq_handler)();
extern struct mod_ops mod_driverops;
#define QCN_TXINT_ENABLE 0x1
#define QCN_RXINT_ENABLE 0x2
/*
* API major/minor definitions for console
* read/write support.
*/
#define QCN_API_MAJOR 1
#define QCN_API_MINOR 1
/*
* The buffer size must be a power of 2 or contig_mem_alloc will fail
*/
#define CONS_WR_BUF_SIZE 64
#ifdef __cplusplus
}
#endif
#endif /* _QCN_H */
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