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/* $NetBSD: comvar.h,v 1.47 2003/11/08 01:59:38 simonb Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
*
* 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 Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include "rnd.h"
#include "opt_multiprocessor.h"
#include "opt_lockdebug.h"
#include "opt_com.h"
#include "opt_kgdb.h"
#if NRND > 0 && defined(RND_COM)
#include <sys/rnd.h>
#endif
#include <sys/callout.h>
#include <sys/timepps.h>
#if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(COM_MPLOCK)
#include <sys/lock.h>
#endif
int comcnattach __P((bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t));
#ifdef KGDB
int com_kgdb_attach __P((bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t));
#endif
int com_is_console __P((bus_space_tag_t, bus_addr_t, bus_space_handle_t *));
/* Hardware flag masks */
#define COM_HW_NOIEN 0x01
#define COM_HW_FIFO 0x02
/* 0x04 free for use */
#define COM_HW_FLOW 0x08
#define COM_HW_DEV_OK 0x20
#define COM_HW_CONSOLE 0x40
#define COM_HW_KGDB 0x80
#define COM_HW_TXFIFO_DISABLE 0x100
#define COM_HW_NO_TXPRELOAD 0x200
/* Buffer size for character buffer */
#define COM_RING_SIZE 2048
struct com_softc {
struct device sc_dev;
void *sc_si;
struct tty *sc_tty;
struct callout sc_diag_callout;
bus_addr_t sc_iobase; /* XXX ISA-centric name */
int sc_frequency;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
bus_space_handle_t sc_hayespioh;
u_int sc_overflows,
sc_floods,
sc_errors;
int sc_hwflags,
sc_swflags;
u_int sc_fifolen;
u_int sc_r_hiwat,
sc_r_lowat;
u_char *volatile sc_rbget,
*volatile sc_rbput;
volatile u_int sc_rbavail;
u_char *sc_rbuf,
*sc_ebuf;
u_char *sc_tba;
u_int sc_tbc,
sc_heldtbc;
volatile u_char sc_rx_flags,
#define RX_TTY_BLOCKED 0x01
#define RX_TTY_OVERFLOWED 0x02
#define RX_IBUF_BLOCKED 0x04
#define RX_IBUF_OVERFLOWED 0x08
#define RX_ANY_BLOCK 0x0f
sc_tx_busy,
sc_tx_done,
sc_tx_stopped,
sc_st_check,
sc_rx_ready;
volatile u_char sc_heldchange;
volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr,
sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr;
u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd;
#ifdef COM_HAYESP
u_char sc_prescaler;
#endif
/*
* There are a great many almost-ns16550-compatible UARTs out
* there, which have minor differences. The type field here
* lets us distinguish between them.
*/
int sc_type;
#define COM_TYPE_NORMAL 0 /* normal 16x50 */
#define COM_TYPE_HAYESP 1 /* Hayes ESP modem */
#define COM_TYPE_PXA2x0 2 /* Intel PXA2x0 processor built-in */
#define COM_TYPE_AU1x00 3 /* AMD/Alchemy Au1x000 proc. built-in */
/* power management hooks */
int (*enable) __P((struct com_softc *));
void (*disable) __P((struct com_softc *));
int enabled;
/* PPS signal on DCD, with or without inkernel clock disciplining */
u_char sc_ppsmask; /* pps signal mask */
u_char sc_ppsassert; /* pps leading edge */
u_char sc_ppsclear; /* pps trailing edge */
pps_info_t ppsinfo;
pps_params_t ppsparam;
#if NRND > 0 && defined(RND_COM)
rndsource_element_t rnd_source;
#endif
#if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(COM_MPLOCK)
struct simplelock sc_lock;
#endif
};
/* Macros to clear/set/test flags. */
#define SET(t, f) (t) |= (f)
#define CLR(t, f) (t) &= ~(f)
#define ISSET(t, f) ((t) & (f))
int comprobe1 __P((bus_space_tag_t, bus_space_handle_t));
int comintr __P((void *));
void com_attach_subr __P((struct com_softc *));
int com_detach __P((struct device *, int));
int com_activate __P((struct device *, enum devact));
#ifndef __HAVE_GENERIC_SOFT_INTERRUPTS
#ifdef __NO_SOFT_SERIAL_INTERRUPT
#define IPL_SERIAL IPL_TTY
#define splserial() spltty()
#define IPL_SOFTSERIAL IPL_TTY
#define splsoftserial() spltty()
#endif
#endif
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