33d70de438
and always call the simple_* locking functions. the locking functions are compiled out if they are not needed anyway, so a separate option for this doesn't gain anything. this also fixes the serial console on my alpha ES40 (which doesn't make much sense since the com driver should still be under the big lock on alpha, but whatever).
172 lines
5.0 KiB
C
172 lines
5.0 KiB
C
/* $NetBSD: comvar.h,v 1.50 2005/12/27 00:46:38 chs Exp $ */
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/*
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "rnd.h"
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#include "opt_multiprocessor.h"
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#include "opt_lockdebug.h"
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#include "opt_com.h"
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#include "opt_kgdb.h"
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#if NRND > 0 && defined(RND_COM)
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#include <sys/rnd.h>
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#endif
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#include <sys/callout.h>
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#include <sys/timepps.h>
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#include <sys/lock.h>
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int comcnattach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t);
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#ifdef KGDB
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int com_kgdb_attach(bus_space_tag_t, bus_addr_t, int, int, int, tcflag_t);
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#endif
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int com_is_console(bus_space_tag_t, bus_addr_t, bus_space_handle_t *);
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/* Hardware flag masks */
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#define COM_HW_NOIEN 0x01
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#define COM_HW_FIFO 0x02
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/* 0x04 free for use */
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#define COM_HW_FLOW 0x08
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#define COM_HW_DEV_OK 0x20
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#define COM_HW_CONSOLE 0x40
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#define COM_HW_KGDB 0x80
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#define COM_HW_TXFIFO_DISABLE 0x100
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#define COM_HW_NO_TXPRELOAD 0x200
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/* Buffer size for character buffer */
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#define COM_RING_SIZE 2048
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struct com_softc {
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struct device sc_dev;
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void *sc_si;
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struct tty *sc_tty;
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struct callout sc_diag_callout;
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bus_addr_t sc_iobase; /* XXX ISA-centric name */
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int sc_frequency;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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bus_space_handle_t sc_hayespioh;
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u_int sc_overflows,
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sc_floods,
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sc_errors;
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int sc_hwflags,
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sc_swflags;
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u_int sc_fifolen;
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u_int sc_r_hiwat,
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sc_r_lowat;
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u_char *volatile sc_rbget,
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*volatile sc_rbput;
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volatile u_int sc_rbavail;
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u_char *sc_rbuf,
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*sc_ebuf;
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u_char *sc_tba;
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u_int sc_tbc,
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sc_heldtbc;
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volatile u_char sc_rx_flags,
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#define RX_TTY_BLOCKED 0x01
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#define RX_TTY_OVERFLOWED 0x02
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#define RX_IBUF_BLOCKED 0x04
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#define RX_IBUF_OVERFLOWED 0x08
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#define RX_ANY_BLOCK 0x0f
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sc_tx_busy,
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sc_tx_done,
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sc_tx_stopped,
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sc_st_check,
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sc_rx_ready;
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volatile u_char sc_heldchange;
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volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr,
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sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr;
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u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd;
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#ifdef COM_HAYESP
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u_char sc_prescaler;
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#endif
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/*
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* There are a great many almost-ns16550-compatible UARTs out
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* there, which have minor differences. The type field here
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* lets us distinguish between them.
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*/
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int sc_type;
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#define COM_TYPE_NORMAL 0 /* normal 16x50 */
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#define COM_TYPE_HAYESP 1 /* Hayes ESP modem */
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#define COM_TYPE_PXA2x0 2 /* Intel PXA2x0 processor built-in */
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#define COM_TYPE_AU1x00 3 /* AMD/Alchemy Au1x000 proc. built-in */
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/* power management hooks */
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int (*enable)(struct com_softc *);
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void (*disable)(struct com_softc *);
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int enabled;
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/* PPS signal on DCD, with or without inkernel clock disciplining */
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u_char sc_ppsmask; /* pps signal mask */
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u_char sc_ppsassert; /* pps leading edge */
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u_char sc_ppsclear; /* pps trailing edge */
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pps_info_t ppsinfo;
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pps_params_t ppsparam;
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#if NRND > 0 && defined(RND_COM)
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rndsource_element_t rnd_source;
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#endif
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struct simplelock sc_lock;
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};
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/* Macros to clear/set/test flags. */
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#define SET(t, f) (t) |= (f)
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#define CLR(t, f) (t) &= ~(f)
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#define ISSET(t, f) ((t) & (f))
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int comprobe1(bus_space_tag_t, bus_space_handle_t);
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int comintr(void *);
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void com_attach_subr(struct com_softc *);
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int com_detach(struct device *, int);
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int com_activate(struct device *, enum devact);
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#ifndef __HAVE_GENERIC_SOFT_INTERRUPTS
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#ifdef __NO_SOFT_SERIAL_INTERRUPT
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#define IPL_SERIAL IPL_TTY
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#define splserial() spltty()
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#define IPL_SOFTSERIAL IPL_TTY
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#define splsoftserial() spltty()
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#endif
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#endif
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