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/* $NetBSD: plcomvar.h,v 1.20 2023/04/11 12:56:07 riastradh 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.
*/
#ifndef _SYS_ARCH_EVBARM_DEV_PLCOMVAR_H_
#define _SYS_ARCH_EVBARM_DEV_PLCOMVAR_H_
#include "opt_multiprocessor.h"
#include "opt_lockdebug.h"
#include "opt_plcom.h"
#include "opt_kgdb.h"
#ifdef RND_COM
#include <sys/rndsource.h>
#endif
#include <sys/callout.h>
#include <sys/timepps.h>
struct plcom_instance;
int plcomcnattach (struct plcom_instance *, int, int, tcflag_t, int);
void plcomcndetach (void);
#ifdef KGDB
int plcom_kgdb_attach (struct plcom_instance *, int, int, tcflag_t, int);
#endif
int plcom_is_console (bus_space_tag_t, bus_addr_t, bus_space_handle_t *);
/* Hardware flag masks */
#define PLCOM_HW_NOIEN 0x01
#define PLCOM_HW_FIFO 0x02
#define PLCOM_HW_HAYESP 0x04
#define PLCOM_HW_FLOW 0x08
#define PLCOM_HW_DEV_OK 0x20
#define PLCOM_HW_CONSOLE 0x40
#define PLCOM_HW_KGDB 0x80
#define PLCOM_HW_TXFIFO_DISABLE 0x100
/* Buffer size for character buffer */
#define PLCOM_RING_SIZE 2048
struct plcom_instance {
u_int pi_type;
#define PLCOM_TYPE_PL010 0
#define PLCOM_TYPE_PL011 1
#define PLCOM_TYPE_GENERIC_UART 2 /* SBSA generic uart */
uint32_t pi_flags; /* flags for this PLCOM */
#define PLC_FLAG_USE_DMA 0x0001
#define PLC_FLAG_32BIT_ACCESS 0x0002
uint32_t pi_periphid;
void *pi_cookie;
bus_space_tag_t pi_iot;
bus_space_handle_t pi_ioh;
bus_addr_t pi_iobase;
bus_addr_t pi_size;
struct plcom_registers *pi_regs;
};
struct plcom_softc {
device_t sc_dev;
struct tty *sc_tty;
void *sc_si;
struct callout sc_diag_callout;
int sc_frequency;
struct plcom_instance sc_pi;
u_int sc_overflows,
sc_floods,
sc_errors;
int sc_hwflags,
sc_swflags;
u_int sc_fifolen;
u_int sc_burstlen;
struct timeval sc_hup_pending;
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 uint32_t sc_cr, sc_ratel, sc_rateh, sc_imsc;
volatile uint32_t sc_msr, sc_msr_delta, sc_msr_mask;
volatile uint32_t sc_lcr, sc_ifls;
volatile u_char sc_mcr, sc_mcr_active;
u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd;
u_int sc_fifo;
/* Support routine to program mcr lines for PL010, if present. */
void (*sc_set_mcr)(void *, int, u_int);
void *sc_set_mcr_arg;
/* power management hooks */
int (*enable) (struct plcom_softc *);
void (*disable) (struct plcom_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;
#ifdef RND_COM
krndsource_t rnd_source;
#endif
kmutex_t sc_lock;
};
#if 0
int plcomprobe1 (bus_space_tag_t, bus_space_handle_t);
#endif
int plcomintr (void *);
void plcom_attach_subr (struct plcom_softc *);
int plcom_detach (device_t, int);
int plcom_activate (device_t, enum devact);
#endif /* _SYS_ARCH_EVBARM_DEV_PLCOMVAR_H_ */
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