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/* $NetBSD: comvar.h,v 1.86 2017/12/04 09:55:37 bouyer 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 "opt_multiprocessor.h"
#include "opt_lockdebug.h"
#include "opt_com.h"
#include "opt_kgdb.h"
#ifdef RND_COM
#include <sys/rndsource.h>
#endif
#include <sys/callout.h>
#include <sys/timepps.h>
#include <sys/mutex.h>
#include <sys/device.h>
#include <dev/ic/comreg.h> /* for COM_NPORTS */
struct com_regs;
int comcnattach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t);
int comcnattach1(struct com_regs *, int, int, int, tcflag_t);
#ifdef KGDB
int com_kgdb_attach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t);
int com_kgdb_attach1(struct com_regs *, int, int, int, tcflag_t);
#endif
int com_is_console(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
#define COM_HW_AFE 0x400
/* Buffer size for character buffer */
#ifndef COM_RING_SIZE
#define COM_RING_SIZE 2048
#endif
#ifdef COM_REGMAP
#define COM_REG_RXDATA 0
#define COM_REG_TXDATA 1
#define COM_REG_DLBL 2
#define COM_REG_DLBH 3
#define COM_REG_IER 4
#define COM_REG_IIR 5
#define COM_REG_FIFO 6
#define COM_REG_TCR 6
#define COM_REG_EFR 7
#define COM_REG_TLR 7
#define COM_REG_LCR 8
#define COM_REG_MDR1 8
#define COM_REG_MCR 9
#define COM_REG_LSR 10
#define COM_REG_MSR 11
#define COM_REG_USR 31 /* 16750/SUNXI */
#define COM_REG_TFL com_tfl /* SUNXI */
#define COM_REG_RFL com_rfl /* SUNXI */
#define COM_REG_HALT com_halt /* SUNXI */
struct com_regs {
bus_space_tag_t cr_iot;
bus_space_handle_t cr_ioh;
bus_addr_t cr_iobase;
bus_size_t cr_nports;
bus_size_t cr_map[42];
};
extern const bus_size_t com_std_map[42];
#define COM_INIT_REGS(regs, tag, hdl, addr) \
do { \
regs.cr_iot = tag; \
regs.cr_ioh = hdl; \
regs.cr_iobase = addr; \
regs.cr_nports = COM_NPORTS; \
memcpy(regs.cr_map, com_std_map, sizeof (regs.cr_map)); \
} while (0)
#else
#define COM_REG_RXDATA com_data
#define COM_REG_TXDATA com_data
#define COM_REG_DLBL com_dlbl
#define COM_REG_DLBH com_dlbh
#define COM_REG_IER com_ier
#define COM_REG_IIR com_iir
#define COM_REG_FIFO com_fifo
#define COM_REG_EFR com_efr
#define COM_REG_LCR com_lctl
#define COM_REG_MCR com_mcr
#define COM_REG_LSR com_lsr
#define COM_REG_MSR com_msr
#define COM_REG_TCR com_msr
#define COM_REG_TLR com_scratch
#define COM_REG_MDR1 8
#define COM_REG_USR com_usr /* 16750/SUNXI */
#define COM_REG_TFL com_tfl /* SUNXI */
#define COM_REG_RFL com_rfl /* SUNXI */
#define COM_REG_HALT com_halt /* SUNXI */
struct com_regs {
bus_space_tag_t cr_iot;
bus_space_handle_t cr_ioh;
bus_addr_t cr_iobase;
bus_size_t cr_nports;
};
#define COM_INIT_REGS(regs, tag, hdl, addr) \
do { \
regs.cr_iot = tag; \
regs.cr_ioh = hdl; \
regs.cr_iobase = addr; \
regs.cr_nports = COM_NPORTS; \
} while (0)
#endif
struct comcons_info {
struct com_regs regs;
int rate;
int frequency;
int type;
tcflag_t cflag;
};
struct com_softc {
device_t sc_dev;
void *sc_si;
struct tty *sc_tty;
struct callout sc_diag_callout;
int sc_frequency;
struct com_regs sc_regs;
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;
u_char sc_prescaler; /* for COM_TYPE_HAYESP */
/*
* 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 */
#define COM_TYPE_OMAP 4 /* TI OMAP processor built-in */
#define COM_TYPE_16550_NOERS 5 /* like a 16550, no ERS */
#define COM_TYPE_INGENIC 6 /* JZ4780 built-in */
#define COM_TYPE_TEGRA 7 /* NVIDIA Tegra built-in */
#define COM_TYPE_BCMAUXUART 8 /* BCM2835 AUX UART */
#define COM_TYPE_16650 9
#define COM_TYPE_16750 10
#define COM_TYPE_SUNXI 11 /* Allwinner built-in */
/* power management hooks */
int (*enable)(struct com_softc *);
void (*disable)(struct com_softc *);
int enabled;
/* XXXX: vendor workaround functions */
int (*sc_vendor_workaround)(struct com_softc *);
struct pps_state sc_pps_state; /* pps state */
#ifdef RND_COM
krndsource_t rnd_source;
#endif
kmutex_t sc_lock;
};
int comprobe1(bus_space_tag_t, bus_space_handle_t);
int comintr(void *);
void com_attach_subr(struct com_softc *);
int com_probe_subr(struct com_regs *);
int com_detach(device_t, int);
bool com_resume(device_t, const pmf_qual_t *);
bool com_cleanup(device_t, int);
bool com_suspend(device_t, const pmf_qual_t *);
#ifndef IPL_SERIAL
#define IPL_SERIAL IPL_TTY
#define splserial() spltty()
#endif
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