de4337ab21
- struct timeval time is gone
time.tv_sec -> time_second
- struct timeval mono_time is gone
mono_time.tv_sec -> time_uptime
- access to time via
{get,}{micro,nano,bin}time()
get* versions are fast but less precise
- support NTP nanokernel implementation (NTP API 4)
- further reading:
Timecounter Paper: http://phk.freebsd.dk/pubs/timecounter.pdf
NTP Nanokernel: http://www.eecis.udel.edu/~mills/ntp/html/kern.html
171 lines
5.1 KiB
C
171 lines
5.1 KiB
C
/* $NetBSD: comvar.h,v 1.52 2006/06/07 22:33:35 kardel 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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#ifdef __HAVE_TIMECOUNTER
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struct pps_state sc_pps_state; /* pps state */
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#else /* !__HAVE_TIMECOUNTER */
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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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#endif /* !__HAVE_TIMECOUNTER */
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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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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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