146 lines
5.1 KiB
C
146 lines
5.1 KiB
C
/* $NetBSD: kbdvar.h,v 1.1 1999/05/14 07:07:16 mrg Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This software was developed by the Computer Systems Engineering group
|
|
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
|
* contributed to Berkeley.
|
|
*
|
|
* All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Lawrence Berkeley Laboratory.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)kbd.c 8.2 (Berkeley) 10/30/93
|
|
*/
|
|
|
|
/*
|
|
* How many input characters we can buffer.
|
|
* The port-specific var.h may override this.
|
|
* Note: must be a power of two!
|
|
*/
|
|
#define KBD_RX_RING_SIZE 256
|
|
#define KBD_RX_RING_MASK (KBD_RX_RING_SIZE-1)
|
|
/*
|
|
* Output buffer. Only need a few chars.
|
|
*/
|
|
#define KBD_TX_RING_SIZE 16
|
|
#define KBD_TX_RING_MASK (KBD_TX_RING_SIZE-1)
|
|
/*
|
|
* Keyboard serial line speed is fixed at 1200 bps.
|
|
*/
|
|
#define KBD_BPS 1200
|
|
#define KBD_RESET_TIMO 1000 /* mS. */
|
|
|
|
/*
|
|
* XXX - Historical comment - no longer quite right...
|
|
* Keyboard driver state. The ascii and kbd links go up and down and
|
|
* we just sit in the middle doing translation. Note that it is possible
|
|
* to get just one of the two links, in which case /dev/kbd is unavailable.
|
|
* The downlink supplies us with `internal' open and close routines which
|
|
* will enable dataflow across the downlink. We promise to call open when
|
|
* we are willing to take keystrokes, and to call close when we are not.
|
|
* If /dev/kbd is not the console tty input source, we do this whenever
|
|
* /dev/kbd is in use; otherwise we just leave it open forever.
|
|
*/
|
|
struct zs_chanstate;
|
|
struct ucom_softc;
|
|
|
|
struct kbd_softc {
|
|
struct device k_dev; /* required first: base device */
|
|
|
|
/* Stuff our parent setup */
|
|
union {
|
|
struct zs_chanstate *ku_zcs;
|
|
struct ucom_softc *ku_usc;
|
|
} k_cs_u;
|
|
#define k_cs k_cs_u.ku_zcs
|
|
#define k_usc k_cs_u.ku_usc
|
|
void (*k_write_data) __P((struct kbd_softc *, int));
|
|
|
|
/* Flags to communicate with kbd_softint() */
|
|
volatile int k_intr_flags;
|
|
#define INTR_RX_OVERRUN 1
|
|
#define INTR_TX_EMPTY 2
|
|
#define INTR_ST_CHECK 4
|
|
|
|
/* Transmit state */
|
|
volatile int k_txflags;
|
|
#define K_TXBUSY 1
|
|
#define K_TXWANT 2
|
|
|
|
/*
|
|
* State of upper interface.
|
|
*/
|
|
int k_isopen; /* set if open has been done */
|
|
int k_evmode; /* set if we should produce events */
|
|
struct evvar k_events; /* event queue state */
|
|
|
|
/*
|
|
* ACSI translation state
|
|
*/
|
|
int k_repeat_start; /* initial delay */
|
|
int k_repeat_step; /* inter-char delay */
|
|
int k_repeatsym; /* repeating symbol */
|
|
int k_repeating; /* we've called timeout() */
|
|
struct kbd_state k_state; /* ASCII translation state */
|
|
|
|
/*
|
|
* Magic sequence stuff (L1-A)
|
|
*/
|
|
char k_isconsole;
|
|
char k_magic1_down;
|
|
u_char k_magic1; /* L1 */
|
|
u_char k_magic2; /* A */
|
|
|
|
/*
|
|
* The transmit ring buffer.
|
|
*/
|
|
volatile u_int k_tbget; /* transmit buffer `get' index */
|
|
volatile u_int k_tbput; /* transmit buffer `put' index */
|
|
u_char k_tbuf[KBD_TX_RING_SIZE]; /* data */
|
|
|
|
/*
|
|
* The receive ring buffer.
|
|
*/
|
|
u_int k_rbget; /* ring buffer `get' index */
|
|
volatile u_int k_rbput; /* ring buffer `put' index */
|
|
u_short k_rbuf[KBD_RX_RING_SIZE]; /* rr1, data pairs */
|
|
|
|
};
|
|
|
|
/* functions used between backend/frontend keyboard drivers */
|
|
void kbd_input_raw __P((struct kbd_softc *k, int));
|
|
void kbd_output(struct kbd_softc *k, int c);
|
|
void kbd_start_tx(struct kbd_softc *k);
|