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Diffstat (limited to 'sys/pc98/cbus/sio.c')
| -rw-r--r-- | sys/pc98/cbus/sio.c | 4726 |
1 files changed, 0 insertions, 4726 deletions
diff --git a/sys/pc98/cbus/sio.c b/sys/pc98/cbus/sio.c deleted file mode 100644 index 97ac3ad3b384..000000000000 --- a/sys/pc98/cbus/sio.c +++ /dev/null @@ -1,4726 +0,0 @@ -/*- - * Copyright (c) 1991 The Regents of the University of California. - * 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 the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. - * - * from: @(#)com.c 7.5 (Berkeley) 5/16/91 - * $Id: sio.c,v 1.75 1999/01/16 11:42:16 kato Exp $ - */ - -#include "opt_comconsole.h" -#include "opt_compat.h" -#include "opt_ddb.h" -#include "opt_devfs.h" -#include "opt_sio.h" -#include "sio.h" -#include "pnp.h" - -/* - * Serial driver, based on 386BSD-0.1 com driver. - * Mostly rewritten to use pseudo-DMA. - * Works for National Semiconductor NS8250-NS16550AF UARTs. - * COM driver, based on HP dca driver. - * - * Changes for PC-Card integration: - * - Added PC-Card driver table and handlers - */ -/*=============================================================== - * 386BSD(98),FreeBSD-1.1x(98) com driver. - * ----- - * modified for PC9801 by M.Ishii - * Kyoto University Microcomputer Club (KMC) - * Chou "TEFUTEFU" Hirotomi - * Kyoto Univ. the faculty of medicine - *=============================================================== - * FreeBSD-2.0.1(98) sio driver. - * ----- - * modified for pc98 Internal i8251 and MICRO CORE MC16550II - * T.Koike(hfc01340@niftyserve.or.jp) - * implement kernel device configuration - * aizu@orient.center.nitech.ac.jp - * - * Notes. - * ----- - * PC98 localization based on 386BSD(98) com driver. Using its PC98 local - * functions. - * This driver is under debugging,has bugs. - * - * 1) config - * options COM_MULTIPORT #if using MC16550II - * device sio0 at nec? port 0x30 tty irq 4 #internal - * device sio1 at nec? port 0xd2 tty irq 5 flags 0x101 #mc1 - * device sio2 at nec? port 0x8d2 tty flags 0x101 #mc2 - * # ~~~~~iobase ~~multi port flag - * # ~ master device is sio1 - * 2) device - * cd /dev; MAKEDEV ttyd0 ttyd1 .. - * 3) /etc/rc.serial - * 57600bps is too fast for sio0(internal8251) - * my ex. - * #set default speed 9600 - * modem() - * : - * stty </dev/ttyid$i crtscts 9600 - * : # ~~~~ default speed(can change after init.) - * modem 0 1 2 - * 4) COMCONSOLE - * not changed. - * 5) PC9861K,PIO9032B,B98_01 - * not tested. - */ -/* - * modified for AIWA B98-01 - * by T.Hatanou <hatanou@yasuda.comm.waseda.ac.jp> last update: 15 Sep.1995 - * - * How to configure... - * # options COM_MULTIPORT # support for MICROCORE MC16550II - * ... comment-out this line, which will conflict with B98_01. - * options "B98_01" # support for AIWA B98-01 - * device sio1 at nec? port 0x00d1 tty irq ? - * device sio2 at nec? port 0x00d5 tty irq ? - * ... you can leave these lines `irq ?', irq will be autodetected. - */ -/* - * Modified by Y.Takahashi of Kogakuin University. - */ - -#ifdef PC98 -#define COM_IF_INTERNAL 0x00 -#define COM_IF_PC9861K_1 0x01 -#define COM_IF_PC9861K_2 0x02 -#define COM_IF_IND_SS_1 0x03 -#define COM_IF_IND_SS_2 0x04 -#define COM_IF_PIO9032B_1 0x05 -#define COM_IF_PIO9032B_2 0x06 -#define COM_IF_B98_01_1 0x07 -#define COM_IF_B98_01_2 0x08 -#define COM_IF_END1 COM_IF_B98_01_2 -#define COM_IF_RSA98 0x10 /* same as COM_IF_NS16550 */ -#define COM_IF_NS16550 0x11 -#define COM_IF_SECOND_CCU 0x12 /* same as COM_IF_NS16550 */ -#define COM_IF_MC16550II 0x13 -#define COM_IF_MCRS98 0x14 /* same as COM_IF_MC16550II */ -#define COM_IF_RSB3000 0x15 -#define COM_IF_RSB384 0x16 -#define COM_IF_MODEM_CARD 0x17 /* same as COM_IF_NS16550 */ -#define COM_IF_RSA98III 0x18 -#define COM_IF_ESP98 0x19 -#define COM_IF_END2 COM_IF_ESP98 -#endif /* PC98 */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/reboot.h> -#include <sys/malloc.h> -#include <sys/tty.h> -#include <sys/proc.h> -#include <sys/conf.h> -#include <sys/dkstat.h> -#include <sys/fcntl.h> -#include <sys/interrupt.h> -#include <sys/kernel.h> -#include <sys/syslog.h> -#include <sys/sysctl.h> -#ifdef DEVFS -#include <sys/devfsext.h> -#endif - -#include <machine/clock.h> -#include <machine/ipl.h> -#ifndef SMP -#include <machine/lock.h> -#endif - -#ifdef PC98 -#include <pc98/pc98/pc98.h> -#include <pc98/pc98/pc98_machdep.h> -#include <i386/isa/icu.h> -#include <i386/isa/ic/i8251.h> -#else -#include <i386/isa/isa.h> -#endif -#include <i386/isa/isa_device.h> -#include <i386/isa/sioreg.h> -#include <i386/isa/intr_machdep.h> - -#ifdef COM_ESP -#include <i386/isa/ic/esp.h> -#endif -#include <i386/isa/ic/ns16550.h> -#ifdef PC98 -#include <i386/isa/ic/rsa.h> -#endif - -#include "card.h" -#if NCARD > 0 -#include <sys/module.h> -#include <pccard/cardinfo.h> -#include <pccard/slot.h> -#endif - -#if NPNP > 0 -#include <i386/isa/pnp.h> -#endif - -#ifdef SMP -#define disable_intr() COM_DISABLE_INTR() -#define enable_intr() COM_ENABLE_INTR() -#endif /* SMP */ - -#ifndef EXTRA_SIO -#if NPNP > 0 -#define EXTRA_SIO MAX_PNP_CARDS -#else -#define EXTRA_SIO 0 -#endif -#endif - -#define NSIOTOT (NSIO + EXTRA_SIO) - -#define LOTS_OF_EVENTS 64 /* helps separate urgent events from input */ -#define RS_IBUFSIZE 256 - -#define CALLOUT_MASK 0x80 -#define CONTROL_MASK 0x60 -#define CONTROL_INIT_STATE 0x20 -#define CONTROL_LOCK_STATE 0x40 -#define DEV_TO_UNIT(dev) (MINOR_TO_UNIT(minor(dev))) -#define MINOR_MAGIC_MASK (CALLOUT_MASK | CONTROL_MASK) -#define MINOR_TO_UNIT(mynor) ((mynor) & ~MINOR_MAGIC_MASK) - -#ifdef COM_MULTIPORT -/* checks in flags for multiport and which is multiport "master chip" - * for a given card - */ -#define COM_ISMULTIPORT(dev) ((dev)->id_flags & 0x01) -#define COM_MPMASTER(dev) (((dev)->id_flags >> 8) & 0x0ff) -#define COM_NOTAST4(dev) ((dev)->id_flags & 0x04) -#endif /* COM_MULTIPORT */ - -#define COM_CONSOLE(dev) ((dev)->id_flags & 0x10) -#define COM_FORCECONSOLE(dev) ((dev)->id_flags & 0x20) -#define COM_LLCONSOLE(dev) ((dev)->id_flags & 0x40) -#define COM_LOSESOUTINTS(dev) ((dev)->id_flags & 0x08) -#define COM_NOFIFO(dev) ((dev)->id_flags & 0x02) -#define COM_ST16650A(dev) ((dev)->id_flags & 0x20000) -#define COM_C_NOPROBE (0x40000) -#define COM_NOPROBE(dev) ((dev)->id_flags & COM_C_NOPROBE) -#define COM_C_IIR_TXRDYBUG (0x80000) -#define COM_IIR_TXRDYBUG(dev) ((dev)->id_flags & COM_C_IIR_TXRDYBUG) -#define COM_FIFOSIZE(dev) (((dev)->id_flags & 0xff000000) >> 24) - -#ifdef PC98 -#define com_emr com_msr /* Extension mode register for RSB-2000/3000 */ -#else -#define com_scr 7 /* scratch register for 16450-16550 (R/W) */ -#endif - -/* - * Input buffer watermarks. - * The external device is asked to stop sending when the buffer exactly reaches - * high water, or when the high level requests it. - * The high level is notified immediately (rather than at a later clock tick) - * when this watermark is reached. - * The buffer size is chosen so the watermark should almost never be reached. - * The low watermark is invisibly 0 since the buffer is always emptied all at - * once. - */ -#define RS_IHIGHWATER (3 * RS_IBUFSIZE / 4) - -/* - * com state bits. - * (CS_BUSY | CS_TTGO) and (CS_BUSY | CS_TTGO | CS_ODEVREADY) must be higher - * than the other bits so that they can be tested as a group without masking - * off the low bits. - * - * The following com and tty flags correspond closely: - * CS_BUSY = TS_BUSY (maintained by comstart(), siopoll() and - * siostop()) - * CS_TTGO = ~TS_TTSTOP (maintained by comparam() and comstart()) - * CS_CTS_OFLOW = CCTS_OFLOW (maintained by comparam()) - * CS_RTS_IFLOW = CRTS_IFLOW (maintained by comparam()) - * TS_FLUSH is not used. - * XXX I think TIOCSETA doesn't clear TS_TTSTOP when it clears IXON. - * XXX CS_*FLOW should be CF_*FLOW in com->flags (control flags not state). - */ -#define CS_BUSY 0x80 /* output in progress */ -#define CS_TTGO 0x40 /* output not stopped by XOFF */ -#define CS_ODEVREADY 0x20 /* external device h/w ready (CTS) */ -#define CS_CHECKMSR 1 /* check of MSR scheduled */ -#define CS_CTS_OFLOW 2 /* use CTS output flow control */ -#define CS_DTR_OFF 0x10 /* DTR held off */ -#define CS_ODONE 4 /* output completed */ -#define CS_RTS_IFLOW 8 /* use RTS input flow control */ -#define CSE_BUSYCHECK 1 /* siobusycheck() scheduled */ - -static char const * const error_desc[] = { -#define CE_OVERRUN 0 - "silo overflow", -#define CE_INTERRUPT_BUF_OVERFLOW 1 - "interrupt-level buffer overflow", -#define CE_TTY_BUF_OVERFLOW 2 - "tty-level buffer overflow", -}; - -#define CE_NTYPES 3 -#define CE_RECORD(com, errnum) (++(com)->delta_error_counts[errnum]) - -/* types. XXX - should be elsewhere */ -typedef u_int Port_t; /* hardware port */ -typedef u_char bool_t; /* boolean */ - -/* queue of linear buffers */ -struct lbq { - u_char *l_head; /* next char to process */ - u_char *l_tail; /* one past the last char to process */ - struct lbq *l_next; /* next in queue */ - bool_t l_queued; /* nonzero if queued */ -}; - -/* com device structure */ -struct com_s { - u_int id_flags; /* Copy isa device falgas */ - u_char state; /* miscellaneous flag bits */ - bool_t active_out; /* nonzero if the callout device is open */ - u_char cfcr_image; /* copy of value written to CFCR */ -#ifdef COM_ESP - bool_t esp; /* is this unit a hayes esp board? */ -#endif - u_char extra_state; /* more flag bits, separate for order trick */ - u_char fifo_image; /* copy of value written to FIFO */ - bool_t hasfifo; /* nonzero for 16550 UARTs */ - bool_t st16650a; /* Is a Startech 16650A or RTS/CTS compat */ - bool_t loses_outints; /* nonzero if device loses output interrupts */ - u_char mcr_image; /* copy of value written to MCR */ -#ifdef COM_MULTIPORT - bool_t multiport; /* is this unit part of a multiport device? */ -#endif /* COM_MULTIPORT */ - bool_t no_irq; /* nonzero if irq is not attached */ - bool_t gone; /* hardware disappeared */ - bool_t poll; /* nonzero if polling is required */ - bool_t poll_output; /* nonzero if polling for output is required */ - int unit; /* unit number */ - int dtr_wait; /* time to hold DTR down on close (* 1/hz) */ - u_int tx_fifo_size; - u_int wopeners; /* # processes waiting for DCD in open() */ - - /* - * The high level of the driver never reads status registers directly - * because there would be too many side effects to handle conveniently. - * Instead, it reads copies of the registers stored here by the - * interrupt handler. - */ - u_char last_modem_status; /* last MSR read by intr handler */ - u_char prev_modem_status; /* last MSR handled by high level */ - - u_char hotchar; /* ldisc-specific char to be handled ASAP */ - u_char *ibuf; /* start of input buffer */ - u_char *ibufend; /* end of input buffer */ - u_char *ihighwater; /* threshold in input buffer */ - u_char *iptr; /* next free spot in input buffer */ - - struct lbq obufq; /* head of queue of output buffers */ - struct lbq obufs[2]; /* output buffers */ - -#ifdef PC98 - Port_t cmd_port; - Port_t sts_port; - Port_t in_modem_port; - Port_t intr_ctrl_port; - int intr_enable; - int pc98_prev_modem_status; - int pc98_modem_delta; - int modem_car_chg_timer; - int pc98_prev_siocmd; - int pc98_prev_siomod; - int modem_checking; - int pc98_if_type; -#endif /* PC98 */ - Port_t data_port; /* i/o ports */ -#ifdef COM_ESP - Port_t esp_port; -#endif - Port_t int_id_port; - Port_t iobase; -#ifdef PC98 - Port_t rsabase; /* iobase address of a I/O-DATA RSA board */ -#endif - Port_t modem_ctl_port; - Port_t line_status_port; - Port_t modem_status_port; - Port_t intr_ctl_port; /* Ports of IIR register */ - - struct tty *tp; /* cross reference */ - - /* Initial state. */ - struct termios it_in; /* should be in struct tty */ - struct termios it_out; - - /* Lock state. */ - struct termios lt_in; /* should be in struct tty */ - struct termios lt_out; - - bool_t do_timestamp; - bool_t do_dcd_timestamp; - struct timeval timestamp; - struct timeval dcd_timestamp; - - u_long bytes_in; /* statistics */ - u_long bytes_out; - u_int delta_error_counts[CE_NTYPES]; - u_long error_counts[CE_NTYPES]; - - /* - * Ping-pong input buffers. The extra factor of 2 in the sizes is - * to allow for an error byte for each input byte. - */ -#ifdef PC98 - u_long CE_INPUT_OFFSET; - u_char *ibuf1; - u_char *ibuf2; - - /* - * Data area for output buffers. Someday we should build the output - * buffer queue without copying data. - */ - u_char *obuf1; - u_char *obuf2; -#else -#define CE_INPUT_OFFSET RS_IBUFSIZE - u_char ibuf1[2 * RS_IBUFSIZE]; - u_char ibuf2[2 * RS_IBUFSIZE]; - - /* - * Data area for output buffers. Someday we should build the output - * buffer queue without copying data. - */ - u_char obuf1[256]; - u_char obuf2[256]; -#endif -#ifdef DEVFS - void *devfs_token_ttyd; - void *devfs_token_ttyl; - void *devfs_token_ttyi; - void *devfs_token_cuaa; - void *devfs_token_cual; - void *devfs_token_cuai; -#endif -}; - -#ifdef COM_ESP -static int espattach __P((struct isa_device *isdp, struct com_s *com, - Port_t esp_port)); -#endif -static int sioattach __P((struct isa_device *dev)); -static timeout_t siobusycheck; -static timeout_t siodtrwakeup; -static void comhardclose __P((struct com_s *com)); -static ointhand2_t siointr; -static void siointr1 __P((struct com_s *com)); -static int commctl __P((struct com_s *com, int bits, int how)); -static int comparam __P((struct tty *tp, struct termios *t)); -static swihand_t siopoll; -static int sioprobe __P((struct isa_device *dev)); -static void siosettimeout __P((void)); -static void comstart __P((struct tty *tp)); -static timeout_t comwakeup; -static void disc_optim __P((struct tty *tp, struct termios *t, - struct com_s *com)); - - -static char driver_name[] = "sio"; - -/* table and macro for fast conversion from a unit number to its com struct */ -static struct com_s *p_com_addr[NSIOTOT]; -#define com_addr(unit) (p_com_addr[unit]) - -struct isa_driver siodriver = { - sioprobe, sioattach, driver_name -}; - -static d_open_t sioopen; -static d_close_t sioclose; -static d_read_t sioread; -static d_write_t siowrite; -static d_ioctl_t sioioctl; -static d_stop_t siostop; -static d_devtotty_t siodevtotty; - -#define CDEV_MAJOR 28 -static struct cdevsw sio_cdevsw = { - sioopen, sioclose, sioread, siowrite, - sioioctl, siostop, noreset, siodevtotty, - ttpoll, nommap, NULL, driver_name, - NULL, -1, nodump, nopsize, - D_TTY, -}; - -static int comconsole = -1; -static volatile speed_t comdefaultrate = CONSPEED; -static u_int com_events; /* input chars + weighted output completions */ -static Port_t siocniobase; -static bool_t sio_registered; -static int sio_timeout; -static int sio_timeouts_until_log; -static struct callout_handle sio_timeout_handle - = CALLOUT_HANDLE_INITIALIZER(&sio_timeout_handle); -#if 0 /* XXX */ -static struct tty *sio_tty[NSIOTOT]; -#else -static struct tty sio_tty[NSIOTOT]; -#endif -static const int nsio_tty = NSIOTOT; - -#ifdef PC98 -struct siodev { - short if_type; - short irq; - Port_t cmd, sts, ctrl, mod; -}; -static int sysclock; - -#define COM_INT_DISABLE {int previpri; previpri=spltty(); -#define COM_INT_ENABLE splx(previpri);} -#define IEN_TxFLAG IEN_Tx - -#define COM_CARRIER_DETECT_EMULATE 0 -#define PC98_CHECK_MODEM_INTERVAL (hz/10) -#define DCD_OFF_TOLERANCE 2 -#define DCD_ON_RECOGNITION 2 -#define IS_8251(if_type) (!(if_type & 0x10)) -#define COM1_EXT_CLOCK 0x40000 - -static void commint __P((dev_t dev)); -static void com_tiocm_set __P((struct com_s *com, int msr)); -static void com_tiocm_bis __P((struct com_s *com, int msr)); -static void com_tiocm_bic __P((struct com_s *com, int msr)); -static int com_tiocm_get __P((struct com_s *com)); -static int com_tiocm_get_delta __P((struct com_s *com)); -static void pc98_msrint_start __P((dev_t dev)); -static void com_cflag_and_speed_set __P((struct com_s *com, int cflag, int speed)); -static int pc98_ttspeedtab __P((struct com_s *com, int speed)); -static int pc98_get_modem_status __P((struct com_s *com)); -static timeout_t pc98_check_msr; -static void pc98_set_baud_rate __P((struct com_s *com, int count)); -static void pc98_i8251_reset __P((struct com_s *com, int mode, int command)); -static void pc98_disable_i8251_interrupt __P((struct com_s *com, int mod)); -static void pc98_enable_i8251_interrupt __P((struct com_s *com, int mod)); -static int pc98_check_i8251_interrupt __P((struct com_s *com)); -static int pc98_i8251_get_cmd __P((struct com_s *com)); -static int pc98_i8251_get_mod __P((struct com_s *com)); -static void pc98_i8251_set_cmd __P((struct com_s *com, int x)); -static void pc98_i8251_or_cmd __P((struct com_s *com, int x)); -static void pc98_i8251_clear_cmd __P((struct com_s *com, int x)); -static void pc98_i8251_clear_or_cmd __P((struct com_s *com, int clr, int x)); -static int pc98_check_if_type __P((struct isa_device *dev, struct siodev *iod)); -static void pc98_check_sysclock __P((void)); -static int pc98_set_ioport __P((struct com_s *com, int id_flags)); - -#define com_int_Tx_disable(com) \ - pc98_disable_i8251_interrupt(com,IEN_Tx|IEN_TxEMP) -#define com_int_Tx_enable(com) \ - pc98_enable_i8251_interrupt(com,IEN_TxFLAG) -#define com_int_Rx_disable(com) \ - pc98_disable_i8251_interrupt(com,IEN_Rx) -#define com_int_Rx_enable(com) \ - pc98_enable_i8251_interrupt(com,IEN_Rx) -#define com_int_TxRx_disable(com) \ - pc98_disable_i8251_interrupt(com,IEN_Tx|IEN_TxEMP|IEN_Rx) -#define com_int_TxRx_enable(com) \ - pc98_enable_i8251_interrupt(com,IEN_TxFLAG|IEN_Rx) -#define com_send_break_on(com) \ - pc98_i8251_or_cmd(com,CMD8251_SBRK) -#define com_send_break_off(com) \ - pc98_i8251_clear_cmd(com,CMD8251_SBRK) - -static struct speedtab pc98speedtab[] = { /* internal RS232C interface */ - 0, 0, - 50, 50, - 75, 75, - 150, 150, - 200, 200, - 300, 300, - 600, 600, - 1200, 1200, - 2400, 2400, - 4800, 4800, - 9600, 9600, - 19200, 19200, - 38400, 38400, - 51200, 51200, - 76800, 76800, - 20800, 20800, - 31200, 31200, - 41600, 41600, - 62400, 62400, - -1, -1 -}; -static struct speedtab pc98fast_speedtab[] = { - 9600, 0x80 | COMBRD(9600), - 19200, 0x80 | COMBRD(19200), - 38400, 0x80 | COMBRD(38400), - 57600, 0x80 | COMBRD(57600), - 115200, 0x80 | COMBRD(115200), - -1, -1 -}; -static struct speedtab comspeedtab_pio9032b[] = { - 300, 6, - 600, 5, - 1200, 4, - 2400, 3, - 4800, 2, - 9600, 1, - 19200, 0, - 38400, 7, - -1, -1 -}; -static struct speedtab comspeedtab_b98_01[] = { - 75, 11, - 150, 10, - 300, 9, - 600, 8, - 1200, 7, - 2400, 6, - 4800, 5, - 9600, 4, - 19200, 3, - 38400, 2, - 76800, 1, - 153600, 0, - -1, -1 -}; -static struct speedtab comspeedtab_mc16550[] = { - 300, 1536, - 600, 768, - 1200, 384, - 2400, 192, - 4800, 96, - 9600, 48, - 19200, 24, - 38400, 12, - 57600, 8, - 115200, 4, - 153600, 3, - 230400, 2, - 460800, 1, - -1, -1 -}; -static struct speedtab comspeedtab_rsb384[] = { - 300, 3840, - 600, 1920, - 1200, 960, - 2400, 480, - 4800, 240, - 9600, 120, - 19200, 60, - 38400, 30, - 57600, 20, - 115200, 10, - 128000, 9, - 144000, 8, - 192000, 6, - 230400, 5, - 288000, 4, - 384000, 3, - 576000, 2, - 1152000, 1, - -1, -1 -}; -static struct speedtab comspeedtab_rsa[] = { - { 0, 0 }, - { 50, COMBRD_RSA(50) }, - { 75, COMBRD_RSA(75) }, - { 110, COMBRD_RSA(110) }, - { 134, COMBRD_RSA(134) }, - { 150, COMBRD_RSA(150) }, - { 200, COMBRD_RSA(200) }, - { 300, COMBRD_RSA(300) }, - { 600, COMBRD_RSA(600) }, - { 1200, COMBRD_RSA(1200) }, - { 1800, COMBRD_RSA(1800) }, - { 2400, COMBRD_RSA(2400) }, - { 4800, COMBRD_RSA(4800) }, - { 9600, COMBRD_RSA(9600) }, - { 19200, COMBRD_RSA(19200) }, - { 38400, COMBRD_RSA(38400) }, - { 57600, COMBRD_RSA(57600) }, - { 115200, COMBRD_RSA(115200) }, - { 230400, COMBRD_RSA(230400) }, - { 460800, COMBRD_RSA(460800) }, - { 921600, COMBRD_RSA(921600) }, - { -1, -1 } -}; -#endif /* PC98 */ - -static struct speedtab comspeedtab[] = { - { 0, 0 }, - { 50, COMBRD(50) }, - { 75, COMBRD(75) }, - { 110, COMBRD(110) }, - { 134, COMBRD(134) }, - { 150, COMBRD(150) }, - { 200, COMBRD(200) }, - { 300, COMBRD(300) }, - { 600, COMBRD(600) }, - { 1200, COMBRD(1200) }, - { 1800, COMBRD(1800) }, - { 2400, COMBRD(2400) }, - { 4800, COMBRD(4800) }, - { 9600, COMBRD(9600) }, - { 19200, COMBRD(19200) }, - { 38400, COMBRD(38400) }, - { 57600, COMBRD(57600) }, - { 115200, COMBRD(115200) }, - { -1, -1 } -}; - -#ifdef PC98 -struct { - char *name; - short port_table[7]; - short irr_mask; - struct speedtab *speedtab; - short check_irq; -} if_8251_type[] = { - /* COM_IF_INTERNAL */ - { " (internal)", {0x30, 0x32, 0x32, 0x33, 0x35, -1, -1}, - -1, pc98speedtab, 1 }, - /* COM_IF_PC9861K_1 */ - { " (PC9861K)", {0xb1, 0xb3, 0xb3, 0xb0, 0xb0, -1, -1}, - 3, NULL, 1 }, - /* COM_IF_PC9861K_2 */ - { " (PC9861K)", {0xb9, 0xbb, 0xbb, 0xb2, 0xb2, -1, -1}, - 3, NULL, 1 }, - /* COM_IF_IND_SS_1 */ - { " (IND-SS)", {0xb1, 0xb3, 0xb3, 0xb0, 0xb0, 0xb3, -1}, - 3, comspeedtab_mc16550, 1 }, - /* COM_IF_IND_SS_2 */ - { " (IND-SS)", {0xb9, 0xbb, 0xbb, 0xb2, 0xb2, 0xbb, -1}, - 3, comspeedtab_mc16550, 1 }, - /* COM_IF_PIO9032B_1 */ - { " (PIO9032B)", {0xb1, 0xb3, 0xb3, 0xb0, 0xb0, 0xb8, -1}, - 7, comspeedtab_pio9032b, 1 }, - /* COM_IF_PIO9032B_2 */ - { " (PIO9032B)", {0xb9, 0xbb, 0xbb, 0xb2, 0xb2, 0xba, -1}, - 7, comspeedtab_pio9032b, 1 }, - /* COM_IF_B98_01_1 */ - { " (B98-01)", {0xb1, 0xb3, 0xb3, 0xb0, 0xb0, 0xd1, 0xd3}, - 7, comspeedtab_b98_01, 0 }, - /* COM_IF_B98_01_2 */ - { " (B98-01)", {0xb9, 0xbb, 0xbb, 0xb2, 0xb2, 0xd5, 0xd7}, - 7, comspeedtab_b98_01, 0 }, -}; -#define PC98SIO_data_port(type) (if_8251_type[type].port_table[0]) -#define PC98SIO_cmd_port(type) (if_8251_type[type].port_table[1]) -#define PC98SIO_sts_port(type) (if_8251_type[type].port_table[2]) -#define PC98SIO_in_modem_port(type) (if_8251_type[type].port_table[3]) -#define PC98SIO_intr_ctrl_port(type) (if_8251_type[type].port_table[4]) -#define PC98SIO_baud_rate_port(type) (if_8251_type[type].port_table[5]) -#define PC98SIO_func_port(type) (if_8251_type[type].port_table[6]) - -struct { - char *name; - short irr_read; - short irr_write; - short port_shift; - short io_size; - struct speedtab *speedtab; -} if_16550a_type[] = { - /* COM_IF_RSA98 */ - { " (RSA-98)", -1, -1, 0, IO_COMSIZE, comspeedtab }, - /* COM_IF_NS16550 */ - { "", -1, -1, 0, IO_COMSIZE, comspeedtab }, - /* COM_IF_SECOND_CCU */ - { "", -1, -1, 0, IO_COMSIZE, comspeedtab }, - /* COM_IF_MC16550II */ - { " (MC16550II)", -1, 0x1000, 8, 1, comspeedtab_mc16550 }, - /* COM_IF_MCRS98 */ - { " (MC-RS98)", -1, 0x1000, 8, 1, comspeedtab_mc16550 }, - /* COM_IF_RSB3000 */ - { " (RSB-3000)", 0xbf, -1, 1, 1, comspeedtab_rsb384 }, - /* COM_IF_RSB384 */ - { " (RSB-384)", 0xbf, -1, 1, 1, comspeedtab_rsb384 }, - /* COM_IF_MODEM_CARD */ - { "", -1, -1, 0, IO_COMSIZE, comspeedtab }, - /* COM_IF_RSA98III */ - { " (RSA-98III)", -1, -1, 0, 16, comspeedtab_rsa }, - /* COM_IF_ESP98 */ - { " (ESP98)", -1, -1, 1, 1, comspeedtab_mc16550 }, -}; -#endif /* PC98 */ - -#ifdef COM_ESP -#ifdef PC98 - -/* XXX configure this properly. */ -static Port_t likely_com_ports[] = { 0, 0xb0, 0xb1, 0 }; -static Port_t likely_esp_ports[] = { 0xc0d0, 0 }; - -#define ESP98_CMD1 (ESP_CMD1 * 0x100) -#define ESP98_CMD2 (ESP_CMD2 * 0x100) -#define ESP98_STATUS1 (ESP_STATUS1 * 0x100) -#define ESP98_STATUS2 (ESP_STATUS2 * 0x100) - -#else /* PC98 */ - -/* XXX configure this properly. */ -static Port_t likely_com_ports[] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, }; -static Port_t likely_esp_ports[] = { 0x140, 0x180, 0x280, 0 }; - -#endif /* PC98 */ -#endif - -/* - * handle sysctl read/write requests for console speed - * - * In addition to setting comdefaultrate for I/O through /dev/console, - * also set the initial and lock values for the /dev/ttyXX device - * if there is one associated with the console. Finally, if the /dev/tty - * device has already been open, change the speed on the open running port - * itself. - */ - -static int -sysctl_machdep_comdefaultrate SYSCTL_HANDLER_ARGS -{ - int error, s; - speed_t newspeed; - struct com_s *com; - struct tty *tp; - - newspeed = comdefaultrate; - - error = sysctl_handle_opaque(oidp, &newspeed, sizeof newspeed, req); - if (error || !req->newptr) - return (error); - - comdefaultrate = newspeed; - - if (comconsole < 0) /* serial console not selected? */ - return (0); - - com = com_addr(comconsole); - if (!com) - return (ENXIO); - - /* - * set the initial and lock rates for /dev/ttydXX and /dev/cuaXX - * (note, the lock rates really are boolean -- if non-zero, disallow - * speed changes) - */ - com->it_in.c_ispeed = com->it_in.c_ospeed = - com->lt_in.c_ispeed = com->lt_in.c_ospeed = - com->it_out.c_ispeed = com->it_out.c_ospeed = - com->lt_out.c_ispeed = com->lt_out.c_ospeed = comdefaultrate; - - /* - * if we're open, change the running rate too - */ - tp = com->tp; - if (tp && (tp->t_state & TS_ISOPEN)) { - tp->t_termios.c_ispeed = - tp->t_termios.c_ospeed = comdefaultrate; - s = spltty(); - error = comparam(tp, &tp->t_termios); - splx(s); - } - return error; -} - -SYSCTL_PROC(_machdep, OID_AUTO, conspeed, CTLTYPE_INT | CTLFLAG_RW, - 0, 0, sysctl_machdep_comdefaultrate, "I", ""); - -#if NCARD > 0 -/* - * PC-Card (PCMCIA) specific code. - */ -static int sioinit __P((struct pccard_devinfo *)); -static void siounload __P((struct pccard_devinfo *)); -static int card_intr __P((struct pccard_devinfo *)); - -PCCARD_MODULE(sio, sioinit, siounload, card_intr, 0, tty_imask); - -/* - * Initialize the device - called from Slot manager. - */ -int -sioinit(struct pccard_devinfo *devi) -{ - - /* validate unit number. */ - if (devi->isahd.id_unit >= (NSIOTOT)) - return(ENODEV); - /* Make sure it isn't already probed. */ - if (com_addr(devi->isahd.id_unit)) - return(EBUSY); - - /* It's already probed as serial by Upper */ - devi->isahd.id_flags |= COM_C_NOPROBE; - - /* - * Probe the device. If a value is returned, the - * device was found at the location. - */ - if (sioprobe(&devi->isahd) == 0) - return(ENXIO); - if (sioattach(&devi->isahd) == 0) - return(ENXIO); - - return(0); -} - -/* - * siounload - unload the driver and clear the table. - * XXX TODO: - * This is usually called when the card is ejected, but - * can be caused by a modunload of a controller driver. - * The idea is to reset the driver's view of the device - * and ensure that any driver entry points such as - * read and write do not hang. - */ -static void -siounload(struct pccard_devinfo *devi) -{ - struct com_s *com; - - if (!devi) { - printf("NULL devi in siounload\n"); - return; - } - com = com_addr(devi->isahd.id_unit); - if (!com) { - printf("NULL com in siounload\n"); - return; - } - if (!com->iobase) { - printf("sio%d already unloaded!\n",devi->isahd.id_unit); - return; - } - if (com->tp && (com->tp->t_state & TS_ISOPEN)) { - com->gone = 1; - printf("sio%d: unload\n", devi->isahd.id_unit); - com->tp->t_gen++; - ttyclose(com->tp); - ttwakeup(com->tp); - ttwwakeup(com->tp); - } else { - com_addr(com->unit) = NULL; -#ifdef PC98 - bzero(com->ibuf1, com->CE_INPUT_OFFSET * 6); -#endif - bzero(com, sizeof *com); - free(com,M_TTYS); - printf("sio%d: unload,gone\n", devi->isahd.id_unit); - } -} - -/* - * card_intr - Shared interrupt called from - * front end of PC-Card handler. - */ -static int -card_intr(struct pccard_devinfo *devi) -{ - struct com_s *com; - - COM_LOCK(); - com = com_addr(devi->isahd.id_unit); - if (com && !com->gone) - siointr1(com_addr(devi->isahd.id_unit)); - COM_UNLOCK(); - return(1); -} -#endif /* NCARD > 0 */ - -static int -sioprobe(dev) - struct isa_device *dev; -{ - static bool_t already_init; - bool_t failures[10]; - int fn; - struct isa_device *idev; - Port_t iobase; - intrmask_t irqmap[4]; - intrmask_t irqs; - u_char mcr_image; - int result; - struct isa_device *xdev; -#ifdef PC98 - int irqout=0; - int ret = 0; - int tmp; - int port_shift = 0; - struct siodev iod; - Port_t rsabase = NULL; -#endif - - if (!already_init) { - /* - * Turn off MCR_IENABLE for all likely serial ports. An unused - * port with its MCR_IENABLE gate open will inhibit interrupts - * from any used port that shares the interrupt vector. - * XXX the gate enable is elsewhere for some multiports. - */ - for (xdev = isa_devtab_tty; xdev->id_driver != NULL; xdev++) -#ifdef PC98 - if (xdev->id_driver == &siodriver && xdev->id_enabled) { - tmp = (xdev->id_flags >> 24) & 0xff; - if (IS_8251(tmp)) - outb((xdev->id_iobase & 0xff00) | PC98SIO_cmd_port(tmp & 0x0f), 0xf2); - else - if (tmp == COM_IF_RSA98III) { - rsabase = xdev->id_iobase & 0xfff0; -#if 0 - if (rsabase != xdev->id_iobase) - return(0); -#endif - outb(xdev->id_iobase + 8 + (com_mcr << if_16550a_type[tmp & 0x0f].port_shift), 0); - } else - outb(xdev->id_iobase + (com_mcr << if_16550a_type[tmp & 0x0f].port_shift), 0); - } -#else - if (xdev->id_driver == &siodriver && xdev->id_enabled) - outb(xdev->id_iobase + com_mcr, 0); -#endif - already_init = TRUE; - } - - if (COM_LLCONSOLE(dev)) { - printf("sio%d: reserved for low-level i/o\n", dev->id_unit); - return (0); - } - -#ifdef PC98 - DELAY(10); - - /* - * If the port is i8251 UART (internal, B98_01) - */ - if (pc98_check_if_type(dev, &iod) == -1) - return 0; - if (iod.irq > 0) - dev->id_irq = 1 << iod.irq; - if (IS_8251(iod.if_type)) { - outb(iod.cmd, 0); - DELAY(10); - outb(iod.cmd, 0); - DELAY(10); - outb(iod.cmd, 0); - DELAY(10); - outb(iod.cmd, CMD8251_RESET); - DELAY(1000); /* for a while...*/ - outb(iod.cmd, 0xf2); /* MODE (dummy) */ - DELAY(10); - outb(iod.cmd, 0x01); /* CMD (dummy) */ - DELAY(1000); /* for a while...*/ - if (( inb(iod.sts) & STS8251_TxEMP ) == 0 ) { - ret = 0; - } - if (if_8251_type[iod.if_type & 0x0f].check_irq) { - COM_INT_DISABLE - tmp = ( inb( iod.ctrl ) & ~(IEN_Rx|IEN_TxEMP|IEN_Tx)); - outb( iod.ctrl, tmp|IEN_TxEMP ); - DELAY(10); - ret = isa_irq_pending() ? 4 : 0; - outb( iod.ctrl, tmp ); - COM_INT_ENABLE - } else { - /* - * B98_01 doesn't activate TxEMP interrupt line - * when being reset, so we can't check irq pending. - */ - ret = 4; - } - if (epson_machine_id==0x20) { /* XXX */ - ret = 4; - } - return ret; - } -#endif /* PC98 */ - /* - * If the device is on a multiport card and has an AST/4 - * compatible interrupt control register, initialize this - * register and prepare to leave MCR_IENABLE clear in the mcr. - * Otherwise, prepare to set MCR_IENABLE in the mcr. - * Point idev to the device struct giving the correct id_irq. - * This is the struct for the master device if there is one. - */ - idev = dev; - mcr_image = MCR_IENABLE; -#ifdef PC98 - if (iod.if_type == COM_IF_RSA98III) { - mcr_image = 0; - rsabase = idev->id_iobase & 0xfff0; - if (rsabase != idev->id_iobase) - return(0); - outb(rsabase + rsa_msr, 0x04); - outb(rsabase + rsa_frr, 0x00); - if ((inb(rsabase + rsa_srr) & 0x36) != 0x36) - return (0); - outb(rsabase + rsa_ier, 0x00); - outb(rsabase + rsa_frr, 0x00); - outb(rsabase + rsa_tivsr, 0x00); - outb(rsabase + rsa_tcr, 0x00); - } -#endif /* PC98 */ -#ifdef COM_MULTIPORT - if (COM_ISMULTIPORT(dev)) { - idev = find_isadev(isa_devtab_tty, &siodriver, - COM_MPMASTER(dev)); - if (idev == NULL) { - printf("sio%d: master device %d not configured\n", - dev->id_unit, COM_MPMASTER(dev)); - dev->id_irq = 0; - idev = dev; - } -#ifndef PC98 - if (!COM_NOTAST4(dev)) { - outb(idev->id_iobase + com_scr, - idev->id_irq ? 0x80 : 0); - mcr_image = 0; - } -#endif /* !PC98 */ - } -#endif /* COM_MULTIPORT */ - if (idev->id_irq == 0) - mcr_image = 0; - -#ifdef PC98 - tmp = if_16550a_type[iod.if_type & 0x0f].irr_write; - if (tmp != -1) { - /* MC16550II */ - switch (idev->id_irq) { - case IRQ3: irqout = 4; break; - case IRQ5: irqout = 5; break; - case IRQ6: irqout = 6; break; - case IRQ12: irqout = 7; break; - default: - printf("sio%d: irq configuration error\n", dev->id_unit); - return (0); - } - outb((dev->id_iobase & 0x00ff) | tmp, irqout); - } - port_shift = if_16550a_type[iod.if_type & 0x0f].port_shift; -#endif - bzero(failures, sizeof failures); -#ifdef PC98 - if (iod.if_type == COM_IF_RSA98III) - iobase = dev->id_iobase + 8; - else -#endif - iobase = dev->id_iobase; - - /* - * We don't want to get actual interrupts, just masked ones. - * Interrupts from this line should already be masked in the ICU, - * but mask them in the processor as well in case there are some - * (misconfigured) shared interrupts. - */ - disable_intr(); -/* EXTRA DELAY? */ - - /* - * Initialize the speed and the word size and wait long enough to - * drain the maximum of 16 bytes of junk in device output queues. - * The speed is undefined after a master reset and must be set - * before relying on anything related to output. There may be - * junk after a (very fast) soft reboot and (apparently) after - * master reset. - * XXX what about the UART bug avoided by waiting in comparam()? - * We don't want to to wait long enough to drain at 2 bps. - */ - if (iobase == siocniobase) - DELAY((16 + 1) * 1000000 / (comdefaultrate / 10)); - else { -#ifdef PC98 - tmp = ttspeedtab(SIO_TEST_SPEED, - if_16550a_type[iod.if_type & 0x0f].speedtab); - outb(iobase + (com_cfcr << port_shift), CFCR_DLAB|CFCR_8BITS); - outb(iobase + (com_dlbl << port_shift), tmp & 0xff); - outb(iobase + (com_dlbh << port_shift), (tmp >> 8) & 0xff); - outb(iobase + (com_cfcr << port_shift), CFCR_8BITS); -#else - outb(iobase + com_cfcr, CFCR_DLAB | CFCR_8BITS); - outb(iobase + com_dlbl, COMBRD(SIO_TEST_SPEED) & 0xff); - outb(iobase + com_dlbh, (u_int) COMBRD(SIO_TEST_SPEED) >> 8); - outb(iobase + com_cfcr, CFCR_8BITS); -#endif - DELAY((16 + 1) * 1000000 / (SIO_TEST_SPEED / 10)); - } - - /* - * Enable the interrupt gate and disable device interupts. This - * should leave the device driving the interrupt line low and - * guarantee an edge trigger if an interrupt can be generated. - */ -/* EXTRA DELAY? */ -#ifdef PC98 - outb(iobase + (com_mcr << port_shift), mcr_image); - outb(iobase + (com_ier << port_shift), 0); -#else - outb(iobase + com_mcr, mcr_image); - outb(iobase + com_ier, 0); -#endif - DELAY(1000); /* XXX */ - irqmap[0] = isa_irq_pending(); - - /* - * Attempt to set loopback mode so that we can send a null byte - * without annoying any external device. - */ -/* EXTRA DELAY? */ -#ifdef PC98 - outb(iobase + (com_mcr << port_shift), mcr_image | MCR_LOOPBACK); -#else - outb(iobase + com_mcr, mcr_image | MCR_LOOPBACK); -#endif - - /* - * Attempt to generate an output interrupt. On 8250's, setting - * IER_ETXRDY generates an interrupt independent of the current - * setting and independent of whether the THR is empty. On 16450's, - * setting IER_ETXRDY generates an interrupt independent of the - * current setting. On 16550A's, setting IER_ETXRDY only - * generates an interrupt when IER_ETXRDY is not already set. - */ -#ifdef PC98 - outb(iobase + (com_ier << port_shift), IER_ETXRDY); - if (iod.if_type == COM_IF_RSA98III) { - outb(rsabase + rsa_ier, 0x04); - } -#else - outb(iobase + com_ier, IER_ETXRDY); -#endif /* PC98 */ - - /* - * On some 16x50 incompatibles, setting IER_ETXRDY doesn't generate - * an interrupt. They'd better generate one for actually doing - * output. Loopback may be broken on the same incompatibles but - * it's unlikely to do more than allow the null byte out. - */ -#ifdef PC98 - outb(iobase + (com_data << port_shift), 0); -#else - outb(iobase + com_data, 0); -#endif - DELAY((1 + 2) * 1000000 / (SIO_TEST_SPEED / 10)); - - /* - * Turn off loopback mode so that the interrupt gate works again - * (MCR_IENABLE was hidden). This should leave the device driving - * an interrupt line high. It doesn't matter if the interrupt - * line oscillates while we are not looking at it, since interrupts - * are disabled. - */ -/* EXTRA DELAY? */ -#ifdef PC98 - outb(iobase + (com_mcr << port_shift), mcr_image); -#else - outb(iobase + com_mcr, mcr_image); -#endif /* PC98 */ - - /* - * It's a definitly Serial PCMCIA(16550A), but still be required - * for IIR_TXRDY implementation ( Palido 321s, DC-1S... ) - */ - if ( COM_NOPROBE(dev) ) { - /* Reading IIR register twice */ - for ( fn = 0; fn < 2; fn ++ ) { - DELAY(10000); -#ifdef PC98 - failures[6] = inb(iobase + (com_iir << port_shift)); -#else - failures[6] = inb(iobase + com_iir); -#endif - } - /* Check IIR_TXRDY clear ? */ -#ifdef PC98 - result = if_16550a_type[iod.if_type & 0x0f].io_size; -#else - result = IO_COMSIZE; -#endif - if ( failures[6] & IIR_TXRDY ) { - /* Nop, Double check with clearing IER */ -#ifdef PC98 - outb(iobase + (com_ier << port_shift), 0); - if (inb(iobase + - (com_iir << port_shift)) & IIR_NOPEND) { -#else - outb(iobase + com_ier, 0); - if ( inb(iobase + com_iir) & IIR_NOPEND ) { -#endif - /* Ok. we're familia this gang */ - dev->id_flags |= COM_C_IIR_TXRDYBUG; /* Set IIR_TXRDYBUG */ - } else { - /* Unknow, Just omit this chip.. XXX*/ - result = 0; - } - } else { - /* OK. this is well-known guys */ - dev->id_flags &= ~COM_C_IIR_TXRDYBUG; /*Clear IIR_TXRDYBUG*/ - } -#ifdef PC98 - outb(iobase + (com_cfcr << port_shift), CFCR_8BITS); -#else - outb(iobase + com_cfcr, CFCR_8BITS); -#endif - enable_intr(); - return (iobase == siocniobase ? IO_COMSIZE : result); - } - - /* - * Check that - * o the CFCR, IER and MCR in UART hold the values written to them - * (the values happen to be all distinct - this is good for - * avoiding false positive tests from bus echoes). - * o an output interrupt is generated and its vector is correct. - * o the interrupt goes away when the IIR in the UART is read. - */ -/* EXTRA DELAY? */ -#ifdef PC98 - failures[0] = inb(iobase + (com_cfcr << port_shift)) - CFCR_8BITS; - failures[1] = inb(iobase + (com_ier << port_shift)) - IER_ETXRDY; - failures[2] = inb(iobase + (com_mcr << port_shift)) - mcr_image; -#else - failures[0] = inb(iobase + com_cfcr) - CFCR_8BITS; - failures[1] = inb(iobase + com_ier) - IER_ETXRDY; - failures[2] = inb(iobase + com_mcr) - mcr_image; -#endif - DELAY(10000); /* Some internal modems need this time */ - irqmap[1] = isa_irq_pending(); -#ifdef PC98 - failures[4] = (inb(iobase + (com_iir << port_shift)) & IIR_IMASK) - - IIR_TXRDY; - if (iod.if_type == COM_IF_RSA98III) { - inb(rsabase + rsa_srr); - } -#else - failures[4] = (inb(iobase + com_iir) & IIR_IMASK) - IIR_TXRDY; -#endif - DELAY(1000); /* XXX */ - irqmap[2] = isa_irq_pending(); -#ifdef PC98 - failures[6] = (inb(iobase + (com_iir << port_shift)) & IIR_IMASK) - - IIR_NOPEND; - if (iod.if_type == COM_IF_RSA98III) { - inb(rsabase + rsa_srr); - } -#else - failures[6] = (inb(iobase + com_iir) & IIR_IMASK) - IIR_NOPEND; -#endif - - /* - * Turn off all device interrupts and check that they go off properly. - * Leave MCR_IENABLE alone. For ports without a master port, it gates - * the OUT2 output of the UART to - * the ICU input. Closing the gate would give a floating ICU input - * (unless there is another device driving at) and spurious interrupts. - * (On the system that this was first tested on, the input floats high - * and gives a (masked) interrupt as soon as the gate is closed.) - */ -#ifdef PC98 - outb(iobase + (com_ier << port_shift), 0); - outb(iobase + (com_cfcr << port_shift), CFCR_8BITS); - failures[7] = inb(iobase + (com_ier << port_shift)); - if (iod.if_type == COM_IF_RSA98III) { - outb(rsabase + rsa_ier, 0x00); - } -#else - outb(iobase + com_ier, 0); - outb(iobase + com_cfcr, CFCR_8BITS); /* dummy to avoid bus echo */ - failures[7] = inb(iobase + com_ier); -#endif - DELAY(1000); /* XXX */ - irqmap[3] = isa_irq_pending(); -#ifdef PC98 - failures[9] = (inb(iobase + (com_iir << port_shift)) & IIR_IMASK) - - IIR_NOPEND; - if (iod.if_type == COM_IF_RSA98III) { - inb(rsabase + rsa_srr); - outb(rsabase + rsa_frr, 0x00); - } -#else - failures[9] = (inb(iobase + com_iir) & IIR_IMASK) - IIR_NOPEND; -#endif - - enable_intr(); - - irqs = irqmap[1] & ~irqmap[0]; - if (idev->id_irq != 0 && (idev->id_irq & irqs) == 0) - printf( - "sio%d: configured irq %d not in bitmap of probed irqs %#x\n", - dev->id_unit, ffs(idev->id_irq) - 1, irqs); - if (bootverbose) - printf("sio%d: irq maps: %#x %#x %#x %#x\n", - dev->id_unit, irqmap[0], irqmap[1], irqmap[2], irqmap[3]); - -#ifdef PC98 - result = if_16550a_type[iod.if_type & 0x0f].io_size; -#else - result = IO_COMSIZE; -#endif - for (fn = 0; fn < sizeof failures; ++fn) - if (failures[fn]) { -#ifdef PC98 - outb(iobase + (com_mcr << port_shift), 0); -#else - outb(iobase + com_mcr, 0); -#endif - result = 0; - if (bootverbose) { - printf("sio%d: probe failed test(s):", - dev->id_unit); - for (fn = 0; fn < sizeof failures; ++fn) - if (failures[fn]) - printf(" %d", fn); - printf("\n"); - } - break; - } - return (iobase == siocniobase ? IO_COMSIZE : result); -} - -#ifdef COM_ESP -static int -espattach(isdp, com, esp_port) - struct isa_device *isdp; - struct com_s *com; - Port_t esp_port; -{ - u_char dips; - u_char val; - - /* - * Check the ESP-specific I/O port to see if we're an ESP - * card. If not, return failure immediately. - */ - if ((inb(esp_port) & 0xf3) == 0) { - printf(" port 0x%x is not an ESP board?\n", esp_port); - return (0); - } - - /* - * We've got something that claims to be a Hayes ESP card. - * Let's hope so. - */ - - /* Get the dip-switch configuration */ -#ifdef PC98 - outb(esp_port + ESP98_CMD1, ESP_GETDIPS); - dips = inb(esp_port + ESP98_STATUS1); -#else - outb(esp_port + ESP_CMD1, ESP_GETDIPS); - dips = inb(esp_port + ESP_STATUS1); -#endif - - /* - * Bits 0,1 of dips say which COM port we are. - */ -#ifdef PC98 - if ((com->iobase & 0xff) == likely_com_ports[dips & 0x03]) -#else - if (com->iobase == likely_com_ports[dips & 0x03]) -#endif - printf(" : ESP"); - else { - printf(" esp_port has com %d\n", dips & 0x03); - return (0); - } - - /* - * Check for ESP version 2.0 or later: bits 4,5,6 = 010. - */ -#ifdef PC98 - outb(esp_port + ESP98_CMD1, ESP_GETTEST); - val = inb(esp_port + ESP98_STATUS1); /* clear reg 1 */ - val = inb(esp_port + ESP98_STATUS2); -#else - outb(esp_port + ESP_CMD1, ESP_GETTEST); - val = inb(esp_port + ESP_STATUS1); /* clear reg 1 */ - val = inb(esp_port + ESP_STATUS2); -#endif - if ((val & 0x70) < 0x20) { - printf("-old (%o)", val & 0x70); - return (0); - } - - /* - * Check for ability to emulate 16550: bit 7 == 1 - */ - if ((dips & 0x80) == 0) { - printf(" slave"); - return (0); - } - - /* - * Okay, we seem to be a Hayes ESP card. Whee. - */ - com->esp = TRUE; - com->esp_port = esp_port; - return (1); -} -#endif /* COM_ESP */ - -static int -sioattach(isdp) - struct isa_device *isdp; -{ - struct com_s *com; - dev_t dev; -#ifdef COM_ESP - Port_t *espp; -#endif - Port_t iobase; - int s; - int unit; -#ifdef PC98 - int port_shift = 0; - u_long ibufsize; -#endif - - isdp->id_ointr = siointr; - isdp->id_ri_flags |= RI_FAST; -#ifdef PC98 - if (((isdp->id_flags >> 24) & 0xff) == COM_IF_RSA98III) - iobase = isdp->id_iobase + 8; - else -#endif - iobase = isdp->id_iobase; - unit = isdp->id_unit; -#ifndef PC98 - com = malloc(sizeof *com, M_TTYS, M_NOWAIT); -#else - ibufsize = RS_IBUFSIZE; - if (((isdp->id_flags >> 24) & 0xff) == COM_IF_RSA98III) - ibufsize = 2048; - com = malloc((sizeof *com) + ibufsize * 6, M_TTYS, M_NOWAIT); -#endif - if (com == NULL) - return (0); - - /* - * sioprobe() has initialized the device registers as follows: - * o cfcr = CFCR_8BITS. - * It is most important that CFCR_DLAB is off, so that the - * data port is not hidden when we enable interrupts. - * o ier = 0. - * Interrupts are only enabled when the line is open. - * o mcr = MCR_IENABLE, or 0 if the port has AST/4 compatible - * interrupt control register or the config specifies no irq. - * Keeping MCR_DTR and MCR_RTS off might stop the external - * device from sending before we are ready. - */ - bzero(com, sizeof *com); -#ifdef PC98 - com->CE_INPUT_OFFSET = ibufsize; - com->ibuf1 = (u_char *)com + (sizeof *com); - com->ibuf2 = com->ibuf1 + (ibufsize * 2); - com->obuf1 = com->ibuf2 + (ibufsize * 2); - com->obuf2 = com->obuf1 + ibufsize; - bzero(com->ibuf1, ibufsize * 6); -#endif - com->unit = unit; - com->cfcr_image = CFCR_8BITS; - com->dtr_wait = 3 * hz; - com->loses_outints = COM_LOSESOUTINTS(isdp) != 0; - com->no_irq = isdp->id_irq == 0; - com->tx_fifo_size = 1; - com->iptr = com->ibuf = com->ibuf1; -#ifndef PC98 - com->ibufend = com->ibuf1 + RS_IBUFSIZE; - com->ihighwater = com->ibuf1 + RS_IHIGHWATER; -#else - com->ibufend = com->ibuf1 + com->CE_INPUT_OFFSET; - com->ihighwater = com->ibuf1 + (3 * com->CE_INPUT_OFFSET / 4); -#endif - com->obufs[0].l_head = com->obuf1; - com->obufs[1].l_head = com->obuf2; - - com->iobase = iobase; -#ifdef PC98 - if (pc98_set_ioport(com, isdp->id_flags) == -1) { - com->pc98_if_type = (isdp->id_flags >> 24) & 0xff; - port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; - com->data_port = iobase + (com_data << port_shift); - com->int_id_port = iobase + (com_iir << port_shift); - com->modem_ctl_port = iobase + (com_mcr << port_shift); - com->mcr_image = inb(com->modem_ctl_port); - com->line_status_port = iobase + (com_lsr << port_shift); - com->modem_status_port = iobase + (com_msr << port_shift); - com->intr_ctl_port = iobase + (com_ier << port_shift); - } -#else /* not PC98 */ - com->data_port = iobase + com_data; - com->int_id_port = iobase + com_iir; - com->modem_ctl_port = iobase + com_mcr; - com->mcr_image = inb(com->modem_ctl_port); - com->line_status_port = iobase + com_lsr; - com->modem_status_port = iobase + com_msr; - com->intr_ctl_port = iobase + com_ier; -#endif - - /* - * We don't use all the flags from <sys/ttydefaults.h> since they - * are only relevant for logins. It's important to have echo off - * initially so that the line doesn't start blathering before the - * echo flag can be turned off. - */ - com->it_in.c_iflag = 0; - com->it_in.c_oflag = 0; - com->it_in.c_cflag = TTYDEF_CFLAG; - com->it_in.c_lflag = 0; - if (unit == comconsole) { -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - DELAY(100000); -#endif - com->it_in.c_iflag = TTYDEF_IFLAG; - com->it_in.c_oflag = TTYDEF_OFLAG; - com->it_in.c_cflag = TTYDEF_CFLAG | CLOCAL; - com->it_in.c_lflag = TTYDEF_LFLAG; - com->lt_out.c_cflag = com->lt_in.c_cflag = CLOCAL; - com->lt_out.c_ispeed = com->lt_out.c_ospeed = - com->lt_in.c_ispeed = com->lt_in.c_ospeed = - com->it_in.c_ispeed = com->it_in.c_ospeed = comdefaultrate; - } else - com->it_in.c_ispeed = com->it_in.c_ospeed = TTYDEF_SPEED; - termioschars(&com->it_in); - com->it_out = com->it_in; - - /* attempt to determine UART type */ - printf("sio%d: type", unit); - - -#ifndef PC98 -#ifdef COM_MULTIPORT - if (!COM_ISMULTIPORT(isdp) && !COM_IIR_TXRDYBUG(isdp)) -#else - if (!COM_IIR_TXRDYBUG(isdp)) -#endif - { - u_char scr; - u_char scr1; - u_char scr2; - - scr = inb(iobase + com_scr); - outb(iobase + com_scr, 0xa5); - scr1 = inb(iobase + com_scr); - outb(iobase + com_scr, 0x5a); - scr2 = inb(iobase + com_scr); - outb(iobase + com_scr, scr); - if (scr1 != 0xa5 || scr2 != 0x5a) { - printf(" 8250"); - goto determined_type; - } - } -#endif /* !PC98 */ -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) { - com_int_TxRx_disable( com ); - com_cflag_and_speed_set( com, com->it_in.c_cflag, comdefaultrate ); - com_tiocm_bic( com, TIOCM_DTR|TIOCM_RTS|TIOCM_LE ); - com_send_break_off( com ); - printf(" 8251%s", if_8251_type[com->pc98_if_type & 0x0f].name); - } else { - outb(iobase + (com_fifo << port_shift), FIFO_ENABLE | FIFO_RX_HIGH); -#else - outb(iobase + com_fifo, FIFO_ENABLE | FIFO_RX_HIGH); -#endif /* PC98 */ - DELAY(100); - com->st16650a = 0; - switch (inb(com->int_id_port) & IIR_FIFO_MASK) { - case FIFO_RX_LOW: - printf(" 16450"); - break; - case FIFO_RX_MEDL: - printf(" 16450?"); - break; - case FIFO_RX_MEDH: - printf(" 16550?"); - break; - case FIFO_RX_HIGH: - if (COM_NOFIFO(isdp)) { - printf(" 16550A fifo disabled"); - } else { - com->hasfifo = TRUE; -#ifdef PC98 - com->tx_fifo_size = 0; /* XXX flag conflicts. */ - printf(" 16550A"); -#else - if (COM_ST16650A(isdp)) { - com->st16650a = 1; - com->tx_fifo_size = 32; - printf(" ST16650A"); - } else { - com->tx_fifo_size = COM_FIFOSIZE(isdp); - printf(" 16550A"); - } -#endif - } -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSA98III) { - com->tx_fifo_size = 2048; - com->rsabase = isdp->id_iobase; - outb(com->rsabase + rsa_ier, 0x00); - outb(com->rsabase + rsa_frr, 0x00); - } -#endif - -#ifdef COM_ESP -#ifdef PC98 - if (com->pc98_if_type == COM_IF_ESP98) -#endif - for (espp = likely_esp_ports; *espp != 0; espp++) - if (espattach(isdp, com, *espp)) { - com->tx_fifo_size = 1024; - break; - } -#endif - if (!com->st16650a) { - if (!com->tx_fifo_size) - com->tx_fifo_size = 16; - else - printf(" lookalike with %d bytes FIFO", - com->tx_fifo_size); - } - - break; - } - -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSB3000) { - /* Set RSB-2000/3000 Extended Buffer mode. */ - u_char lcr; - lcr = inb(iobase + (com_cfcr << port_shift)); - outb(iobase + (com_cfcr << port_shift), lcr | CFCR_DLAB); - outb(iobase + (com_emr << port_shift), EMR_EXBUFF | EMR_EFMODE); - outb(iobase + (com_cfcr << port_shift), lcr); - } -#endif - -#ifdef COM_ESP - if (com->esp) { - /* - * Set 16550 compatibility mode. - * We don't use the ESP_MODE_SCALE bit to increase the - * fifo trigger levels because we can't handle large - * bursts of input. - * XXX flow control should be set in comparam(), not here. - */ -#ifdef PC98 - outb(com->esp_port + ESP98_CMD1, ESP_SETMODE); - outb(com->esp_port + ESP98_CMD2, ESP_MODE_RTS | ESP_MODE_FIFO); -#else - outb(com->esp_port + ESP_CMD1, ESP_SETMODE); - outb(com->esp_port + ESP_CMD2, ESP_MODE_RTS | ESP_MODE_FIFO); -#endif - - /* Set RTS/CTS flow control. */ -#ifdef PC98 - outb(com->esp_port + ESP98_CMD1, ESP_SETFLOWTYPE); - outb(com->esp_port + ESP98_CMD2, ESP_FLOW_RTS); - outb(com->esp_port + ESP98_CMD2, ESP_FLOW_CTS); -#else - outb(com->esp_port + ESP_CMD1, ESP_SETFLOWTYPE); - outb(com->esp_port + ESP_CMD2, ESP_FLOW_RTS); - outb(com->esp_port + ESP_CMD2, ESP_FLOW_CTS); -#endif - - /* Set flow-control levels. */ -#ifdef PC98 - outb(com->esp_port + ESP98_CMD1, ESP_SETRXFLOW); - outb(com->esp_port + ESP98_CMD2, HIBYTE(768)); - outb(com->esp_port + ESP98_CMD2, LOBYTE(768)); - outb(com->esp_port + ESP98_CMD2, HIBYTE(512)); - outb(com->esp_port + ESP98_CMD2, LOBYTE(512)); -#else - outb(com->esp_port + ESP_CMD1, ESP_SETRXFLOW); - outb(com->esp_port + ESP_CMD2, HIBYTE(768)); - outb(com->esp_port + ESP_CMD2, LOBYTE(768)); - outb(com->esp_port + ESP_CMD2, HIBYTE(512)); - outb(com->esp_port + ESP_CMD2, LOBYTE(512)); -#endif - -#ifdef PC98 - /* Set UART clock prescaler. */ - outb(com->esp_port + ESP98_CMD1, ESP_SETCLOCK); - outb(com->esp_port + ESP98_CMD2, 2); /* 4 times */ -#endif - } -#endif /* COM_ESP */ -#ifdef PC98 - printf("%s", if_16550a_type[com->pc98_if_type & 0x0f].name); - outb(iobase + (com_fifo << port_shift), 0); -#else - outb(iobase + com_fifo, 0); -#endif -determined_type: ; - -#ifdef COM_MULTIPORT - if (COM_ISMULTIPORT(isdp)) { - com->multiport = TRUE; - printf(" (multiport"); - if (unit == COM_MPMASTER(isdp)) - printf(" master"); - printf(")"); - com->no_irq = find_isadev(isa_devtab_tty, &siodriver, - COM_MPMASTER(isdp))->id_irq == 0; - } -#endif /* COM_MULTIPORT */ -#ifdef PC98 - } -#endif - if (unit == comconsole) - printf(", console"); - if ( COM_IIR_TXRDYBUG(isdp) ) - printf(" with a bogus IIR_TXRDY register"); - printf("\n"); - - s = spltty(); - com_addr(unit) = com; - splx(s); - - if (!sio_registered) { - dev = makedev(CDEV_MAJOR, 0); - cdevsw_add(&dev, &sio_cdevsw, NULL); - register_swi(SWI_TTY, siopoll); - sio_registered = TRUE; - } -#ifdef DEVFS - com->devfs_token_ttyd = devfs_add_devswf(&sio_cdevsw, - unit, DV_CHR, - UID_ROOT, GID_WHEEL, 0600, "ttyd%r", unit); - com->devfs_token_ttyi = devfs_add_devswf(&sio_cdevsw, - unit | CONTROL_INIT_STATE, DV_CHR, - UID_ROOT, GID_WHEEL, 0600, "ttyid%r", unit); - com->devfs_token_ttyl = devfs_add_devswf(&sio_cdevsw, - unit | CONTROL_LOCK_STATE, DV_CHR, - UID_ROOT, GID_WHEEL, 0600, "ttyld%r", unit); - com->devfs_token_cuaa = devfs_add_devswf(&sio_cdevsw, - unit | CALLOUT_MASK, DV_CHR, - UID_UUCP, GID_DIALER, 0660, "cuaa%r", unit); - com->devfs_token_cuai = devfs_add_devswf(&sio_cdevsw, - unit | CALLOUT_MASK | CONTROL_INIT_STATE, DV_CHR, - UID_UUCP, GID_DIALER, 0660, "cuaia%r", unit); - com->devfs_token_cual = devfs_add_devswf(&sio_cdevsw, - unit | CALLOUT_MASK | CONTROL_LOCK_STATE, DV_CHR, - UID_UUCP, GID_DIALER, 0660, "cuala%r", unit); -#endif - com->id_flags = isdp->id_flags; /* Heritate id_flags for later */ - return (1); -} - -static int -sioopen(dev, flag, mode, p) - dev_t dev; - int flag; - int mode; - struct proc *p; -{ - struct com_s *com; - int error; - Port_t iobase; - int mynor; - int s; - struct tty *tp; - int unit; -#ifdef PC98 - int port_shift = 0; -#endif - - mynor = minor(dev); - unit = MINOR_TO_UNIT(mynor); - if ((u_int) unit >= NSIOTOT || (com = com_addr(unit)) == NULL) - return (ENXIO); - if (com->gone) - return (ENXIO); - if (mynor & CONTROL_MASK) - return (0); -#if 0 /* XXX */ - tp = com->tp = sio_tty[unit] = ttymalloc(sio_tty[unit]); -#else - tp = com->tp = &sio_tty[unit]; -#endif - s = spltty(); - -#ifdef PC98 - if (!IS_8251(com->pc98_if_type)) - port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; -#endif - /* - * We jump to this label after all non-interrupted sleeps to pick - * up any changes of the device state. - */ -open_top: - while (com->state & CS_DTR_OFF) { - error = tsleep(&com->dtr_wait, TTIPRI | PCATCH, "siodtr", 0); - if (com_addr(unit) == NULL) - return (ENXIO); - if (error != 0 || com->gone) - goto out; - } - if (tp->t_state & TS_ISOPEN) { - /* - * The device is open, so everything has been initialized. - * Handle conflicts. - */ - if (mynor & CALLOUT_MASK) { - if (!com->active_out) { - error = EBUSY; - goto out; - } - } else { - if (com->active_out) { - if (flag & O_NONBLOCK) { - error = EBUSY; - goto out; - } - error = tsleep(&com->active_out, - TTIPRI | PCATCH, "siobi", 0); - if (com_addr(unit) == NULL) - return (ENXIO); - if (error != 0 || com->gone) - goto out; - goto open_top; - } - } - if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) { - error = EBUSY; - goto out; - } - } else { - /* - * The device isn't open, so there are no conflicts. - * Initialize it. Initialization is done twice in many - * cases: to preempt sleeping callin opens if we are - * callout, and to complete a callin open after DCD rises. - */ - tp->t_oproc = comstart; - tp->t_param = comparam; - tp->t_dev = dev; - tp->t_termios = mynor & CALLOUT_MASK - ? com->it_out : com->it_in; -#ifndef PC98 - tp->t_ififosize = 2 * RS_IBUFSIZE; -#else - tp->t_ififosize = 2 * com->CE_INPUT_OFFSET; -#endif - tp->t_ispeedwat = (speed_t)-1; - tp->t_ospeedwat = (speed_t)-1; -#ifdef PC98 - if (!IS_8251(com->pc98_if_type)) -#endif - (void)commctl(com, TIOCM_DTR | TIOCM_RTS, DMSET); - com->poll = com->no_irq; - com->poll_output = com->loses_outints; - ++com->wopeners; - error = comparam(tp, &tp->t_termios); - --com->wopeners; - if (error != 0) - goto out; -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) { - com_tiocm_bis(com, TIOCM_DTR|TIOCM_RTS); - pc98_msrint_start(dev); - } -#endif - /* - * XXX we should goto open_top if comparam() slept. - */ - iobase = com->iobase; - if (com->hasfifo) { - /* - * (Re)enable and drain fifos. - * - * Certain SMC chips cause problems if the fifos - * are enabled while input is ready. Turn off the - * fifo if necessary to clear the input. We test - * the input ready bit after enabling the fifos - * since we've already enabled them in comparam() - * and to handle races between enabling and fresh - * input. - */ - while (TRUE) { -#ifdef PC98 - outb(iobase + (com_fifo << port_shift), - FIFO_RCV_RST | FIFO_XMT_RST - | com->fifo_image); - if (com->pc98_if_type == COM_IF_RSA98III) - outb(com->rsabase + rsa_frr , 0x00); -#else - outb(iobase + com_fifo, - FIFO_RCV_RST | FIFO_XMT_RST - | com->fifo_image); -#endif - /* - * XXX the delays are for superstitious - * historical reasons. It must be less than - * the character time at the maximum - * supported speed (87 usec at 115200 bps - * 8N1). Otherwise we might loop endlessly - * if data is streaming in. We used to use - * delays of 100. That usually worked - * because DELAY(100) used to usually delay - * for about 85 usec instead of 100. - */ - DELAY(50); -#ifndef PC98 - if (!(inb(com->line_status_port) & LSR_RXRDY)) -#else - if (com->pc98_if_type == COM_IF_RSA98III - ? !(inb(com->rsabase + rsa_srr) & 0x08) - : !(inb(com->line_status_port) & LSR_RXRDY)) -#endif - break; -#ifdef PC98 - outb(iobase + (com_fifo << port_shift), 0); -#else - outb(iobase + com_fifo, 0); -#endif - DELAY(50); - (void) inb(com->data_port); - } - } - - disable_intr(); -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) { - com_tiocm_bis(com, TIOCM_LE); - com->pc98_prev_modem_status = pc98_get_modem_status(com); - com_int_Rx_enable(com); - } else { -#endif - (void) inb(com->line_status_port); - (void) inb(com->data_port); - com->prev_modem_status = com->last_modem_status - = inb(com->modem_status_port); - if (COM_IIR_TXRDYBUG(com)) { - outb(com->intr_ctl_port, IER_ERXRDY | IER_ERLS - | IER_EMSC); - } else { - outb(com->intr_ctl_port, IER_ERXRDY | IER_ETXRDY - | IER_ERLS | IER_EMSC); - } -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSA98III) { - outb(com->rsabase + rsa_ier, 0x1d); - outb(com->intr_ctl_port, IER_ERLS | IER_EMSC); - } -#endif -#ifdef PC98 - } -#endif - enable_intr(); - /* - * Handle initial DCD. Callout devices get a fake initial - * DCD (trapdoor DCD). If we are callout, then any sleeping - * callin opens get woken up and resume sleeping on "siobi" - * instead of "siodcd". - */ - /* - * XXX `mynor & CALLOUT_MASK' should be - * `tp->t_cflag & (SOFT_CARRIER | TRAPDOOR_CARRIER) where - * TRAPDOOR_CARRIER is the default initial state for callout - * devices and SOFT_CARRIER is like CLOCAL except it hides - * the true carrier. - */ -#ifdef PC98 - if ((IS_8251(com->pc98_if_type) && - (pc98_get_modem_status(com) & TIOCM_CAR)) || - (!IS_8251(com->pc98_if_type) && - (com->prev_modem_status & MSR_DCD)) || - mynor & CALLOUT_MASK) -#else - if (com->prev_modem_status & MSR_DCD || mynor & CALLOUT_MASK) -#endif - (*linesw[tp->t_line].l_modem)(tp, 1); - } - /* - * Wait for DCD if necessary. - */ - if (!(tp->t_state & TS_CARR_ON) && !(mynor & CALLOUT_MASK) - && !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) { - ++com->wopeners; - error = tsleep(TSA_CARR_ON(tp), TTIPRI | PCATCH, "siodcd", 0); - if (com_addr(unit) == NULL) - return (ENXIO); - --com->wopeners; - if (error != 0 || com->gone) - goto out; - goto open_top; - } - error = (*linesw[tp->t_line].l_open)(dev, tp); - disc_optim(tp, &tp->t_termios, com); - if (tp->t_state & TS_ISOPEN && mynor & CALLOUT_MASK) - com->active_out = TRUE; - siosettimeout(); -out: - splx(s); - if (!(tp->t_state & TS_ISOPEN) && com->wopeners == 0) - comhardclose(com); - return (error); -} - -static int -sioclose(dev, flag, mode, p) - dev_t dev; - int flag; - int mode; - struct proc *p; -{ - struct com_s *com; - int mynor; - int s; - struct tty *tp; - - mynor = minor(dev); - if (mynor & CONTROL_MASK) - return (0); - com = com_addr(MINOR_TO_UNIT(mynor)); - tp = com->tp; - s = spltty(); - (*linesw[tp->t_line].l_close)(tp, flag); -#ifdef PC98 - com->modem_checking = 0; -#endif - disc_optim(tp, &tp->t_termios, com); - siostop(tp, FREAD | FWRITE); - comhardclose(com); - ttyclose(tp); - siosettimeout(); - splx(s); - if (com->gone) { - printf("sio%d: gone\n", com->unit); - s = spltty(); - com_addr(com->unit) = 0; - bzero(tp,sizeof *tp); - bzero(com,sizeof *com); - free(com,M_TTYS); - splx(s); - } - return (0); -} - -static void -comhardclose(com) - struct com_s *com; -{ - Port_t iobase; - int s; - struct tty *tp; - int unit; -#ifdef PC98 - int port_shift = 0; -#endif - - unit = com->unit; - iobase = com->iobase; - s = spltty(); - com->poll = FALSE; - com->poll_output = FALSE; - com->do_timestamp = FALSE; - com->do_dcd_timestamp = FALSE; -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - com_send_break_off(com); - else { - port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; - outb(iobase + (com_cfcr << port_shift), - com->cfcr_image &= ~CFCR_SBREAK); - } -#else - outb(iobase + com_cfcr, com->cfcr_image &= ~CFCR_SBREAK); -#endif - { -#ifdef PC98 - int tmp; - if (IS_8251(com->pc98_if_type)) - com_int_TxRx_disable(com); - else - outb(iobase + (com_ier << port_shift), 0); - if (com->pc98_if_type == COM_IF_RSA98III) { - outb(com->rsabase + rsa_ier, 0x00); - } -#else - outb(iobase + com_ier, 0); -#endif - tp = com->tp; -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - tmp = pc98_get_modem_status(com) & TIOCM_CAR; - else - tmp = com->prev_modem_status & MSR_DCD; -#endif - if (tp->t_cflag & HUPCL - /* - * XXX we will miss any carrier drop between here and the - * next open. Perhaps we should watch DCD even when the - * port is closed; it is not sufficient to check it at - * the next open because it might go up and down while - * we're not watching. - */ - || !com->active_out -#ifdef PC98 - && !(tmp) -#else - && !(com->prev_modem_status & MSR_DCD) -#endif - && !(com->it_in.c_cflag & CLOCAL) - || !(tp->t_state & TS_ISOPEN)) { -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - com_tiocm_bic(com, TIOCM_DTR|TIOCM_RTS|TIOCM_LE); - else -#endif - (void)commctl(com, TIOCM_DTR, DMBIC); - if (com->dtr_wait != 0 && !(com->state & CS_DTR_OFF)) { - timeout(siodtrwakeup, com, com->dtr_wait); - com->state |= CS_DTR_OFF; - } - } -#ifdef PC98 - else { - if (IS_8251(com->pc98_if_type)) - com_tiocm_bic(com, TIOCM_LE ); - } -#endif - } - if (com->hasfifo) { - /* - * Disable fifos so that they are off after controlled - * reboots. Some BIOSes fail to detect 16550s when the - * fifos are enabled. - */ -#ifdef PC98 - outb(iobase + (com_fifo << port_shift), 0); -#else - outb(iobase + com_fifo, 0); -#endif - } - com->active_out = FALSE; - wakeup(&com->active_out); - wakeup(TSA_CARR_ON(tp)); /* restart any wopeners */ - splx(s); -} - -static int -sioread(dev, uio, flag) - dev_t dev; - struct uio *uio; - int flag; -{ - int mynor; - int unit; - struct tty *tp; - - mynor = minor(dev); - if (mynor & CONTROL_MASK) - return (ENODEV); - unit = MINOR_TO_UNIT(mynor); - if (com_addr(unit)->gone) - return (ENODEV); - tp = com_addr(unit)->tp; - return ((*linesw[tp->t_line].l_read)(tp, uio, flag)); -} - -static int -siowrite(dev, uio, flag) - dev_t dev; - struct uio *uio; - int flag; -{ - int mynor; - struct tty *tp; - int unit; - - mynor = minor(dev); - if (mynor & CONTROL_MASK) - return (ENODEV); - - unit = MINOR_TO_UNIT(mynor); - if (com_addr(unit)->gone) - return (ENODEV); - tp = com_addr(unit)->tp; - /* - * (XXX) We disallow virtual consoles if the physical console is - * a serial port. This is in case there is a display attached that - * is not the console. In that situation we don't need/want the X - * server taking over the console. - */ - if (constty != NULL && unit == comconsole) - constty = NULL; - return ((*linesw[tp->t_line].l_write)(tp, uio, flag)); -} - -static void -siobusycheck(chan) - void *chan; -{ - struct com_s *com; - int s; - - com = (struct com_s *)chan; - - /* - * Clear TS_BUSY if low-level output is complete. - * spl locking is sufficient because siointr1() does not set CS_BUSY. - * If siointr1() clears CS_BUSY after we look at it, then we'll get - * called again. Reading the line status port outside of siointr1() - * is safe because CS_BUSY is clear so there are no output interrupts - * to lose. - */ - s = spltty(); - if (com->state & CS_BUSY) - com->extra_state &= ~CSE_BUSYCHECK; /* False alarm. */ -#ifdef PC98 - else if (IS_8251(com->pc98_if_type) && - (inb(com->sts_port) & (STS8251_TxRDY | STS8251_TxEMP)) - == (STS8251_TxRDY | STS8251_TxEMP) || - (inb(com->line_status_port) & (LSR_TSRE | LSR_TXRDY)) - == (LSR_TSRE | LSR_TXRDY)) { -#else - else if ((inb(com->line_status_port) & (LSR_TSRE | LSR_TXRDY)) - == (LSR_TSRE | LSR_TXRDY)) { -#endif - com->tp->t_state &= ~TS_BUSY; - ttwwakeup(com->tp); - com->extra_state &= ~CSE_BUSYCHECK; - } else - timeout(siobusycheck, com, hz / 100); - splx(s); -} - -static void -siodtrwakeup(chan) - void *chan; -{ - struct com_s *com; - - com = (struct com_s *)chan; - com->state &= ~CS_DTR_OFF; - wakeup(&com->dtr_wait); -} - -static void -siointr(unit) - int unit; -{ -#ifndef COM_MULTIPORT - COM_LOCK(); - siointr1(com_addr(unit)); - COM_UNLOCK(); -#else /* COM_MULTIPORT */ - struct com_s *com; - bool_t possibly_more_intrs; -#ifdef PC98 - u_char rsa_buf_status; -#endif - - /* - * Loop until there is no activity on any port. This is necessary - * to get an interrupt edge more than to avoid another interrupt. - * If the IRQ signal is just an OR of the IRQ signals from several - * devices, then the edge from one may be lost because another is - * on. - */ - COM_LOCK(); - do { - possibly_more_intrs = FALSE; - for (unit = 0; unit < NSIOTOT; ++unit) { - com = com_addr(unit); - /* - * XXX COM_LOCK(); - * would it work here, or be counter-productive? - */ -#ifdef PC98 - if (com != NULL - && !com->gone - && IS_8251(com->pc98_if_type)){ - siointr1(com); - } else -#endif /* PC98 */ -#ifdef PC98 - if (com != NULL - && !com->gone - && com->pc98_if_type == COM_IF_RSA98III) { - rsa_buf_status = inb(com->rsabase + rsa_srr) & 0xc9; - if ((rsa_buf_status & 0xc8) - || !(rsa_buf_status & 0x01)) { - siointr1(com); - if(rsa_buf_status - != (inb(com->rsabase + rsa_srr) & 0xc9)) - possibly_more_intrs = TRUE; - } - } else -#endif - if (com != NULL - && !com->gone - && (inb(com->int_id_port) & IIR_IMASK) - != IIR_NOPEND) { - siointr1(com); - possibly_more_intrs = TRUE; - } - /* XXX COM_UNLOCK(); */ - } - } while (possibly_more_intrs); - COM_UNLOCK(); -#endif /* COM_MULTIPORT */ -} - -static void -siointr1(com) - struct com_s *com; -{ - u_char line_status; - u_char modem_status; - u_char *ioptr; - u_char recv_data; - u_char int_ctl; - u_char int_ctl_new; - -#ifdef PC98 - u_char tmp=0; - u_char rsa_buf_status = 0; - int rsa_tx_fifo_size=0; - recv_data=0; -#endif /* PC98 */ - - int_ctl = inb(com->intr_ctl_port); - int_ctl_new = int_ctl; - - while (!com->gone) { -#ifdef PC98 -status_read:; - if (IS_8251(com->pc98_if_type)) { - tmp = inb(com->sts_port); -more_intr: - line_status = 0; - if (tmp & STS8251_TxRDY) line_status |= LSR_TXRDY; - if (tmp & STS8251_RxRDY) line_status |= LSR_RXRDY; - if (tmp & STS8251_TxEMP) line_status |= LSR_TSRE; - if (tmp & STS8251_PE) line_status |= LSR_PE; - if (tmp & STS8251_OE) line_status |= LSR_OE; - if (tmp & STS8251_FE) line_status |= LSR_FE; - if (tmp & STS8251_BD_SD) line_status |= LSR_BI; - } else -#endif /* PC98 */ - line_status = inb(com->line_status_port); -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSA98III) - rsa_buf_status = inb(com->rsabase + rsa_srr); -#endif /* PC98 */ - - /* input event? (check first to help avoid overruns) */ -#ifndef PC98 - while (line_status & LSR_RCV_MASK) { -#else - while ((line_status & LSR_RCV_MASK) - || (com->pc98_if_type == COM_IF_RSA98III - && (rsa_buf_status & 0x08))) { -#endif /* PC98 */ - /* break/unnattached error bits or real input? */ -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) { - recv_data = inb(com->data_port); - if (tmp & 0x78) { - pc98_i8251_or_cmd(com,CMD8251_ER); - recv_data = 0; - } - } else { -#endif /* PC98 */ -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSA98III) { - if (!(rsa_buf_status & 0x08)) - recv_data = 0; - else { - recv_data = inb(com->data_port); - } - } else -#endif - if (!(line_status & LSR_RXRDY)) - recv_data = 0; - else - recv_data = inb(com->data_port); -#ifdef PC98 - } -#endif - if (line_status & (LSR_BI | LSR_FE | LSR_PE)) { - /* - * Don't store BI if IGNBRK or FE/PE if IGNPAR. - * Otherwise, push the work to a higher level - * (to handle PARMRK) if we're bypassing. - * Otherwise, convert BI/FE and PE+INPCK to 0. - * - * This makes bypassing work right in the - * usual "raw" case (IGNBRK set, and IGNPAR - * and INPCK clear). - * - * Note: BI together with FE/PE means just BI. - */ - if (line_status & LSR_BI) { -#if defined(DDB) && defined(BREAK_TO_DEBUGGER) - if (com->unit == comconsole) { - breakpoint(); - goto cont; - } -#endif - if (com->tp == NULL - || com->tp->t_iflag & IGNBRK) - goto cont; - } else { - if (com->tp == NULL - || com->tp->t_iflag & IGNPAR) - goto cont; - } - if (com->tp->t_state & TS_CAN_BYPASS_L_RINT - && (line_status & (LSR_BI | LSR_FE) - || com->tp->t_iflag & INPCK)) - recv_data = 0; - } - ++com->bytes_in; - if (com->hotchar != 0 && recv_data == com->hotchar) - setsofttty(); - ioptr = com->iptr; - if (ioptr >= com->ibufend) - CE_RECORD(com, CE_INTERRUPT_BUF_OVERFLOW); - else { - if (com->do_timestamp) - microtime(&com->timestamp); - ++com_events; - schedsofttty(); -#if 0 /* for testing input latency vs efficiency */ -if (com->iptr - com->ibuf == 8) - setsofttty(); -#endif - ioptr[0] = recv_data; -#ifdef PC98 - ioptr[com->CE_INPUT_OFFSET] = line_status; -#else - ioptr[CE_INPUT_OFFSET] = line_status; -#endif - com->iptr = ++ioptr; - if (ioptr == com->ihighwater - && com->state & CS_RTS_IFLOW) -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - com_tiocm_bic(com, TIOCM_RTS); - else -#endif - outb(com->modem_ctl_port, - com->mcr_image &= ~MCR_RTS); - if (line_status & LSR_OE) - CE_RECORD(com, CE_OVERRUN); - } -cont: - /* - * "& 0x7F" is to avoid the gcc-1.40 generating a slow - * jump from the top of the loop to here - */ -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - goto status_read; - else -#endif - line_status = inb(com->line_status_port) & 0x7F; -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSA98III) - rsa_buf_status = inb(com->rsabase + rsa_srr); -#endif /* PC98 */ - } - - /* modem status change? (always check before doing output) */ -#ifdef PC98 - if (!IS_8251(com->pc98_if_type)) { -#endif - modem_status = inb(com->modem_status_port); - if (modem_status != com->last_modem_status) { - if (com->do_dcd_timestamp - && !(com->last_modem_status & MSR_DCD) - && modem_status & MSR_DCD) - microtime(&com->dcd_timestamp); - - /* - * Schedule high level to handle DCD changes. Note - * that we don't use the delta bits anywhere. Some - * UARTs mess them up, and it's easy to remember the - * previous bits and calculate the delta. - */ - com->last_modem_status = modem_status; - if (!(com->state & CS_CHECKMSR)) { - com_events += LOTS_OF_EVENTS; - com->state |= CS_CHECKMSR; - setsofttty(); - } - - /* handle CTS change immediately for crisp flow ctl */ - if (com->state & CS_CTS_OFLOW) { - if (modem_status & MSR_CTS) - com->state |= CS_ODEVREADY; - else - com->state &= ~CS_ODEVREADY; - } - } -#ifdef PC98 - } -#endif - - /* output queued and everything ready? */ -#ifndef PC98 - if (line_status & LSR_TXRDY - && com->state >= (CS_BUSY | CS_TTGO | CS_ODEVREADY)) { -#else - if (((com->pc98_if_type == COM_IF_RSA98III) - ? (rsa_buf_status & 0x02) - : (line_status & LSR_TXRDY)) - && com->state >= (CS_BUSY | CS_TTGO | CS_ODEVREADY)) { -#endif - ioptr = com->obufq.l_head; - if (com->tx_fifo_size > 1) { - u_int ocount; - - ocount = com->obufq.l_tail - ioptr; -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSA98III) { - rsa_buf_status = inb(com->rsabase + rsa_srr); - rsa_tx_fifo_size = 1024; - if (!(rsa_buf_status & 0x01)) - rsa_tx_fifo_size = 2048; - if (ocount > rsa_tx_fifo_size) - ocount = rsa_tx_fifo_size; - } else -#endif - if (ocount > com->tx_fifo_size) - ocount = com->tx_fifo_size; - com->bytes_out += ocount; - do - outb(com->data_port, *ioptr++); - while (--ocount != 0); - } else { - outb(com->data_port, *ioptr++); - ++com->bytes_out; - } -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - if (!(pc98_check_i8251_interrupt(com) & IEN_TxFLAG)) - com_int_Tx_enable(com); -#endif - com->obufq.l_head = ioptr; - if (COM_IIR_TXRDYBUG(com)) { - int_ctl_new = int_ctl | IER_ETXRDY; - } - if (ioptr >= com->obufq.l_tail) { - struct lbq *qp; - - qp = com->obufq.l_next; - qp->l_queued = FALSE; - qp = qp->l_next; - if (qp != NULL) { - com->obufq.l_head = qp->l_head; - com->obufq.l_tail = qp->l_tail; - com->obufq.l_next = qp; - } else { - /* output just completed */ - if ( COM_IIR_TXRDYBUG(com) ) { - int_ctl_new = int_ctl & ~IER_ETXRDY; - } - com->state &= ~CS_BUSY; -#if defined(PC98) - if (IS_8251(com->pc98_if_type)) - if ( pc98_check_i8251_interrupt(com) & IEN_TxFLAG ) - com_int_Tx_disable(com); -#endif - } - if (!(com->state & CS_ODONE)) { - com_events += LOTS_OF_EVENTS; - com->state |= CS_ODONE; - setsofttty(); /* handle at high level ASAP */ - } - } - if ( COM_IIR_TXRDYBUG(com) && (int_ctl != int_ctl_new)) { - if (com->pc98_if_type == COM_IF_RSA98III) { - int_ctl_new &= ~(IER_ETXRDY | IER_ERXRDY); - outb(com->intr_ctl_port, int_ctl_new); - outb(com->rsabase + rsa_ier, 0x1d); - } else - outb(com->intr_ctl_port, int_ctl_new); - } - } -#ifdef PC98 - else if (line_status & LSR_TXRDY) { - if (IS_8251(com->pc98_if_type)) - if ( pc98_check_i8251_interrupt(com) & IEN_TxFLAG ) - com_int_Tx_disable(com); - } - if (IS_8251(com->pc98_if_type)) - if ((tmp = inb(com->sts_port)) & STS8251_RxRDY) - goto more_intr; -#endif - - /* finished? */ -#ifndef COM_MULTIPORT -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - return; -#endif - if ((inb(com->int_id_port) & IIR_IMASK) == IIR_NOPEND) -#endif /* COM_MULTIPORT */ - return; - } -} - -static int -sioioctl(dev, cmd, data, flag, p) - dev_t dev; - u_long cmd; - caddr_t data; - int flag; - struct proc *p; -{ - struct com_s *com; - int error; - Port_t iobase; - int mynor; - int s; - struct tty *tp; -#if defined(COMPAT_43) || defined(COMPAT_SUNOS) - int oldcmd; - struct termios term; -#endif - - mynor = minor(dev); - com = com_addr(MINOR_TO_UNIT(mynor)); - if (com->gone) - return (ENODEV); - iobase = com->iobase; - if (mynor & CONTROL_MASK) { - struct termios *ct; - - switch (mynor & CONTROL_MASK) { - case CONTROL_INIT_STATE: - ct = mynor & CALLOUT_MASK ? &com->it_out : &com->it_in; - break; - case CONTROL_LOCK_STATE: - ct = mynor & CALLOUT_MASK ? &com->lt_out : &com->lt_in; - break; - default: - return (ENODEV); /* /dev/nodev */ - } - switch (cmd) { - case TIOCSETA: - error = suser(p->p_ucred, &p->p_acflag); - if (error != 0) - return (error); - *ct = *(struct termios *)data; - return (0); - case TIOCGETA: - *(struct termios *)data = *ct; - return (0); - case TIOCGETD: - *(int *)data = TTYDISC; - return (0); - case TIOCGWINSZ: - bzero(data, sizeof(struct winsize)); - return (0); - default: - return (ENOTTY); - } - } - tp = com->tp; -#if defined(COMPAT_43) || defined(COMPAT_SUNOS) - term = tp->t_termios; - oldcmd = cmd; - error = ttsetcompat(tp, &cmd, data, &term); - if (error != 0) - return (error); - if (cmd != oldcmd) - data = (caddr_t)&term; -#endif - if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { - int cc; - struct termios *dt = (struct termios *)data; - struct termios *lt = mynor & CALLOUT_MASK - ? &com->lt_out : &com->lt_in; - - dt->c_iflag = (tp->t_iflag & lt->c_iflag) - | (dt->c_iflag & ~lt->c_iflag); - dt->c_oflag = (tp->t_oflag & lt->c_oflag) - | (dt->c_oflag & ~lt->c_oflag); - dt->c_cflag = (tp->t_cflag & lt->c_cflag) - | (dt->c_cflag & ~lt->c_cflag); - dt->c_lflag = (tp->t_lflag & lt->c_lflag) - | (dt->c_lflag & ~lt->c_lflag); - for (cc = 0; cc < NCCS; ++cc) - if (lt->c_cc[cc] != 0) - dt->c_cc[cc] = tp->t_cc[cc]; - if (lt->c_ispeed != 0) - dt->c_ispeed = tp->t_ispeed; - if (lt->c_ospeed != 0) - dt->c_ospeed = tp->t_ospeed; - } - error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); - if (error != ENOIOCTL) - return (error); - s = spltty(); - error = ttioctl(tp, cmd, data, flag); - disc_optim(tp, &tp->t_termios, com); - if (error != ENOIOCTL) { - splx(s); - return (error); - } -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) { - switch (cmd) { - case TIOCSBRK: - com_send_break_on( com ); - break; - case TIOCCBRK: - com_send_break_off( com ); - break; - case TIOCSDTR: - com_tiocm_bis(com, TIOCM_DTR | TIOCM_RTS ); - break; - case TIOCCDTR: - com_tiocm_bic(com, TIOCM_DTR); - break; - /* - * XXX should disallow changing MCR_RTS if CS_RTS_IFLOW is set. The - * changes get undone on the next call to comparam(). - */ - case TIOCMSET: - com_tiocm_set( com, *(int *)data ); - break; - case TIOCMBIS: - com_tiocm_bis( com, *(int *)data ); - break; - case TIOCMBIC: - com_tiocm_bic( com, *(int *)data ); - break; - case TIOCMGET: - *(int *)data = com_tiocm_get(com); - break; - case TIOCMSDTRWAIT: - /* must be root since the wait applies to following logins */ - error = suser(p->p_ucred, &p->p_acflag); - if (error != 0) { - splx(s); - return (error); - } - com->dtr_wait = *(int *)data * hz / 100; - break; - case TIOCMGDTRWAIT: - *(int *)data = com->dtr_wait * 100 / hz; - break; - case TIOCTIMESTAMP: - com->do_timestamp = TRUE; - *(struct timeval *)data = com->timestamp; - break; - case TIOCDCDTIMESTAMP: - com->do_dcd_timestamp = TRUE; - *(struct timeval *)data = com->dcd_timestamp; - break; - default: - splx(s); - return (ENOTTY); - } - } else { - int port_shift; - port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; -#endif - switch (cmd) { - case TIOCSBRK: -#ifdef PC98 - outb(iobase + (com_cfcr << port_shift), - com->cfcr_image |= CFCR_SBREAK); -#else - outb(iobase + com_cfcr, com->cfcr_image |= CFCR_SBREAK); -#endif - break; - case TIOCCBRK: -#ifdef PC98 - outb(iobase + (com_cfcr << port_shift), - com->cfcr_image &= ~CFCR_SBREAK); -#else - outb(iobase + com_cfcr, com->cfcr_image &= ~CFCR_SBREAK); -#endif - break; - case TIOCSDTR: - (void)commctl(com, TIOCM_DTR, DMBIS); - break; - case TIOCCDTR: - (void)commctl(com, TIOCM_DTR, DMBIC); - break; - /* - * XXX should disallow changing MCR_RTS if CS_RTS_IFLOW is set. The - * changes get undone on the next call to comparam(). - */ - case TIOCMSET: - (void)commctl(com, *(int *)data, DMSET); - break; - case TIOCMBIS: - (void)commctl(com, *(int *)data, DMBIS); - break; - case TIOCMBIC: - (void)commctl(com, *(int *)data, DMBIC); - break; - case TIOCMGET: - *(int *)data = commctl(com, 0, DMGET); - break; - case TIOCMSDTRWAIT: - /* must be root since the wait applies to following logins */ - error = suser(p->p_ucred, &p->p_acflag); - if (error != 0) { - splx(s); - return (error); - } - com->dtr_wait = *(int *)data * hz / 100; - break; - case TIOCMGDTRWAIT: - *(int *)data = com->dtr_wait * 100 / hz; - break; - case TIOCTIMESTAMP: - com->do_timestamp = TRUE; - *(struct timeval *)data = com->timestamp; - break; - case TIOCDCDTIMESTAMP: - com->do_dcd_timestamp = TRUE; - *(struct timeval *)data = com->dcd_timestamp; - break; - default: - splx(s); - return (ENOTTY); - } -#ifdef PC98 - } -#endif - splx(s); - return (0); -} - -static void -siopoll() -{ - int unit; - - if (com_events == 0) - return; -repeat: - for (unit = 0; unit < NSIOTOT; ++unit) { - u_char *buf; - struct com_s *com; - u_char *ibuf; - int incc; - struct tty *tp; -#ifdef PC98 - int tmp; -#endif - - com = com_addr(unit); - if (com == NULL) - continue; - tp = com->tp; - if (tp == NULL || com->gone) { - /* - * Discard any events related to never-opened or - * going-away devices. - */ - disable_intr(); - incc = com->iptr - com->ibuf; - com->iptr = com->ibuf; - if (com->state & CS_CHECKMSR) { - incc += LOTS_OF_EVENTS; - com->state &= ~CS_CHECKMSR; - } - com_events -= incc; - enable_intr(); - continue; - } - - /* switch the role of the low-level input buffers */ - if (com->iptr == (ibuf = com->ibuf)) { - buf = NULL; /* not used, but compiler can't tell */ - incc = 0; - } else { - buf = ibuf; - disable_intr(); - incc = com->iptr - buf; - com_events -= incc; - if (ibuf == com->ibuf1) - ibuf = com->ibuf2; - else - ibuf = com->ibuf1; -#ifndef PC98 - com->ibufend = ibuf + RS_IBUFSIZE; - com->ihighwater = ibuf + RS_IHIGHWATER; -#else - com->ibufend = ibuf + com->CE_INPUT_OFFSET; - com->ihighwater = ibuf + (3 * com->CE_INPUT_OFFSET / 4); -#endif - com->iptr = ibuf; - - /* - * There is now room for another low-level buffer full - * of input, so enable RTS if it is now disabled and - * there is room in the high-level buffer. - */ -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - tmp = com_tiocm_get(com) & TIOCM_RTS; - else - tmp = com->mcr_image & MCR_RTS; -#endif - if ((com->state & CS_RTS_IFLOW) -#ifdef PC98 - && !(tmp) -#else - && !(com->mcr_image & MCR_RTS) -#endif - && !(tp->t_state & TS_TBLOCK)) -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - com_tiocm_bis(com, TIOCM_RTS); - else -#endif - outb(com->modem_ctl_port, - com->mcr_image |= MCR_RTS); - enable_intr(); - com->ibuf = ibuf; - } - - if (com->state & CS_CHECKMSR) { - u_char delta_modem_status; - -#ifdef PC98 - if (!IS_8251(com->pc98_if_type)) { -#endif - disable_intr(); - delta_modem_status = com->last_modem_status - ^ com->prev_modem_status; - com->prev_modem_status = com->last_modem_status; - com_events -= LOTS_OF_EVENTS; - com->state &= ~CS_CHECKMSR; - enable_intr(); - if (delta_modem_status & MSR_DCD) - (*linesw[tp->t_line].l_modem) - (tp, com->prev_modem_status & MSR_DCD); -#ifdef PC98 - } -#endif - } - if (com->state & CS_ODONE) { - disable_intr(); - com_events -= LOTS_OF_EVENTS; - com->state &= ~CS_ODONE; - enable_intr(); - if (!(com->state & CS_BUSY) - && !(com->extra_state & CSE_BUSYCHECK)) { - timeout(siobusycheck, com, hz / 100); - com->extra_state |= CSE_BUSYCHECK; - } - (*linesw[tp->t_line].l_start)(tp); - } - if (incc <= 0 || !(tp->t_state & TS_ISOPEN) || - !(tp->t_cflag & CREAD)) - continue; - /* - * Avoid the grotesquely inefficient lineswitch routine - * (ttyinput) in "raw" mode. It usually takes about 450 - * instructions (that's without canonical processing or echo!). - * slinput is reasonably fast (usually 40 instructions plus - * call overhead). - */ - if (tp->t_state & TS_CAN_BYPASS_L_RINT) { - if (tp->t_rawq.c_cc + incc > tp->t_ihiwat - && (com->state & CS_RTS_IFLOW - || tp->t_iflag & IXOFF) - && !(tp->t_state & TS_TBLOCK)) - ttyblock(tp); - tk_nin += incc; - tk_rawcc += incc; - tp->t_rawcc += incc; - com->delta_error_counts[CE_TTY_BUF_OVERFLOW] - += b_to_q((char *)buf, incc, &tp->t_rawq); - ttwakeup(tp); - if (tp->t_state & TS_TTSTOP - && (tp->t_iflag & IXANY - || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { - tp->t_state &= ~TS_TTSTOP; - tp->t_lflag &= ~FLUSHO; - comstart(tp); - } - } else { - do { - u_char line_status; - int recv_data; - -#ifndef PC98 - line_status = (u_char) buf[CE_INPUT_OFFSET]; -#else - line_status = (u_char) buf[com->CE_INPUT_OFFSET]; -#endif - recv_data = (u_char) *buf++; - if (line_status - & (LSR_BI | LSR_FE | LSR_OE | LSR_PE)) { - if (line_status & LSR_BI) - recv_data |= TTY_BI; - if (line_status & LSR_FE) - recv_data |= TTY_FE; - if (line_status & LSR_OE) - recv_data |= TTY_OE; - if (line_status & LSR_PE) - recv_data |= TTY_PE; - } - (*linesw[tp->t_line].l_rint)(recv_data, tp); - } while (--incc > 0); - } - if (com_events == 0) - break; - } - if (com_events >= LOTS_OF_EVENTS) - goto repeat; -} - -static int -comparam(tp, t) - struct tty *tp; - struct termios *t; -{ - u_int cfcr; - int cflag; - struct com_s *com; - int divisor; - u_char dlbh; - u_char dlbl; - Port_t iobase; - int s; - int unit; -#ifdef PC98 - Port_t tmp_port; - int tmp_flg; - int port_shift = 0; - u_char param = 0; -#endif - -#ifdef PC98 - cfcr = 0; - unit = DEV_TO_UNIT(tp->t_dev); - com = com_addr(unit); - iobase = com->iobase; - if (IS_8251(com->pc98_if_type)) { - divisor = pc98_ttspeedtab(com, t->c_ospeed); - } else { - port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; - - /* do historical conversions */ - if (t->c_ispeed == 0) - t->c_ispeed = t->c_ospeed; - - /* check requested parameters */ - divisor = ttspeedtab(t->c_ospeed, - if_16550a_type[com->pc98_if_type & 0x0f].speedtab); - } -#else - /* do historical conversions */ - if (t->c_ispeed == 0) - t->c_ispeed = t->c_ospeed; - - /* check requested parameters */ - divisor = ttspeedtab(t->c_ospeed, comspeedtab); -#endif - if (divisor < 0 || divisor > 0 && t->c_ispeed != t->c_ospeed) - return (EINVAL); - - /* parameters are OK, convert them to the com struct and the device */ -#ifndef PC98 - unit = DEV_TO_UNIT(tp->t_dev); - com = com_addr(unit); - iobase = com->iobase; -#endif - s = spltty(); -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) { - if (divisor == 0) - com_tiocm_bic( com, TIOCM_DTR|TIOCM_RTS|TIOCM_LE ); - else - com_tiocm_bis( com, TIOCM_DTR|TIOCM_RTS|TIOCM_LE ); - } else { -#endif - if (divisor == 0) - (void)commctl(com, TIOCM_DTR, DMBIC); /* hang up line */ - else - (void)commctl(com, TIOCM_DTR, DMBIS); -#ifdef PC98 - } -#endif - cflag = t->c_cflag; -#ifdef PC98 - if (!IS_8251(com->pc98_if_type)) { -#endif - switch (cflag & CSIZE) { - case CS5: - cfcr = CFCR_5BITS; - break; - case CS6: - cfcr = CFCR_6BITS; - break; - case CS7: - cfcr = CFCR_7BITS; - break; - default: - cfcr = CFCR_8BITS; - break; - } - if (cflag & PARENB) { - cfcr |= CFCR_PENAB; - if (!(cflag & PARODD)) - cfcr |= CFCR_PEVEN; - } - if (cflag & CSTOPB) - cfcr |= CFCR_STOPB; - - if (com->hasfifo && divisor != 0) { - /* - * Use a fifo trigger level low enough so that the input - * latency from the fifo is less than about 16 msec and - * the total latency is less than about 30 msec. These - * latencies are reasonable for humans. Serial comms - * protocols shouldn't expect anything better since modem - * latencies are larger. - */ - com->fifo_image = t->c_ospeed <= 4800 - ? FIFO_ENABLE : FIFO_ENABLE | FIFO_RX_HIGH; -#ifdef COM_ESP - /* - * The Hayes ESP card needs the fifo DMA mode bit set - * in compatibility mode. If not, it will interrupt - * for each character received. - */ - if (com->esp) - com->fifo_image |= FIFO_DMA_MODE; -#endif -#ifdef PC98 - outb(iobase + (com_fifo << port_shift), com->fifo_image); -#else - outb(iobase + com_fifo, com->fifo_image); -#endif - } -#ifdef PC98 - } -#endif - - disable_intr(); /* very important while com_data is hidden */ - -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - com_cflag_and_speed_set(com, cflag, t->c_ospeed); - else { -#endif - if (divisor != 0) { -#ifdef PC98 - outb(iobase + (com_cfcr << port_shift), cfcr | CFCR_DLAB); -#else - outb(iobase + com_cfcr, cfcr | CFCR_DLAB); -#endif - /* - * Only set the divisor registers if they would change, - * since on some 16550 incompatibles (UMC8669F), setting - * them while input is arriving them loses sync until - * data stops arriving. - */ - dlbl = divisor & 0xFF; -#ifdef PC98 - if (inb(iobase + (com_dlbl << port_shift)) != dlbl) - outb(iobase + (com_dlbl << port_shift), dlbl); - dlbh = (u_int) divisor >> 8; - if (inb(iobase + (com_dlbh << port_shift)) != dlbh) - outb(iobase + (com_dlbh << port_shift), dlbh); -#else - if (inb(iobase + com_dlbl) != dlbl) - outb(iobase + com_dlbl, dlbl); - dlbh = (u_int) divisor >> 8; - if (inb(iobase + com_dlbh) != dlbh) - outb(iobase + com_dlbh, dlbh); -#endif - } - - -#ifdef PC98 - } - outb(iobase + (com_cfcr << port_shift), com->cfcr_image = cfcr); -#else - outb(iobase + com_cfcr, com->cfcr_image = cfcr); -#endif - - if (!(tp->t_state & TS_TTSTOP)) - com->state |= CS_TTGO; - - if (cflag & CRTS_IFLOW) { - if (com->st16650a) { - outb(iobase + com_cfcr, 0xbf); - outb(iobase + com_fifo, inb(iobase + com_fifo) | 0x40); - } - com->state |= CS_RTS_IFLOW; - /* - * If CS_RTS_IFLOW just changed from off to on, the change - * needs to be propagated to MCR_RTS. This isn't urgent, - * so do it later by calling comstart() instead of repeating - * a lot of code from comstart() here. - */ - } else if (com->state & CS_RTS_IFLOW) { - com->state &= ~CS_RTS_IFLOW; - /* - * CS_RTS_IFLOW just changed from on to off. Force MCR_RTS - * on here, since comstart() won't do it later. - */ -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - com_tiocm_bis(com, TIOCM_RTS); - else -#endif - outb(com->modem_ctl_port, com->mcr_image |= MCR_RTS); - if (com->st16650a) { - outb(iobase + com_cfcr, 0xbf); - outb(iobase + com_fifo, inb(iobase + com_fifo) & ~0x40); - } - } - - - /* - * Set up state to handle output flow control. - * XXX - worth handling MDMBUF (DCD) flow control at the lowest level? - * Now has 10+ msec latency, while CTS flow has 50- usec latency. - */ - com->state |= CS_ODEVREADY; - com->state &= ~CS_CTS_OFLOW; -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSA98III) { - param = inb(com->rsabase + rsa_msr); - outb(com->rsabase + rsa_msr, param & 0x14); - } -#endif - if (cflag & CCTS_OFLOW) { - com->state |= CS_CTS_OFLOW; -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) { - if (!(pc98_get_modem_status(com) & TIOCM_CTS)) - com->state &= ~CS_ODEVREADY; - } else { -#endif -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSA98III) { - /* Set automatic flow control mode */ - outb(com->rsabase + rsa_msr, param | 0x08); - } else -#endif - if (!(com->last_modem_status & MSR_CTS)) - com->state &= ~CS_ODEVREADY; - if (com->st16650a) { - outb(iobase + com_cfcr, 0xbf); - outb(iobase + com_fifo, inb(iobase + com_fifo) | 0x80); - } -#ifdef PC98 - } -#endif - } else { - if (com->st16650a) { - outb(iobase + com_cfcr, 0xbf); - outb(iobase + com_fifo, inb(iobase + com_fifo) & ~0x80); - } - } - - -#ifdef PC98 - outb(iobase + (com_cfcr << port_shift), com->cfcr_image); -#else - outb(iobase + com_cfcr, com->cfcr_image); -#endif - - - /* XXX shouldn't call functions while intrs are disabled. */ - disc_optim(tp, t, com); - /* - * Recover from fiddling with CS_TTGO. We used to call siointr1() - * unconditionally, but that defeated the careful discarding of - * stale input in sioopen(). - */ - if (com->state >= (CS_BUSY | CS_TTGO)) - siointr1(com); - - enable_intr(); - splx(s); - comstart(tp); - return (0); -} - -static void -comstart(tp) - struct tty *tp; -{ - struct com_s *com; - int s; - int unit; -#ifdef PC98 - int tmp; -#endif - - unit = DEV_TO_UNIT(tp->t_dev); - com = com_addr(unit); - s = spltty(); - disable_intr(); - if (tp->t_state & TS_TTSTOP) - com->state &= ~CS_TTGO; - else - com->state |= CS_TTGO; - if (tp->t_state & TS_TBLOCK) { -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - tmp = com_tiocm_get(com) & TIOCM_RTS; - else - tmp = com->mcr_image & MCR_RTS; - if (tmp && (com->state & CS_RTS_IFLOW)) -#else - if (com->mcr_image & MCR_RTS && com->state & CS_RTS_IFLOW) -#endif -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - com_tiocm_bic(com, TIOCM_RTS); - else -#endif - outb(com->modem_ctl_port, com->mcr_image &= ~MCR_RTS); - } else { -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - tmp = com_tiocm_get(com) & TIOCM_RTS; - else - tmp = com->mcr_image & MCR_RTS; - if (!(tmp) && com->iptr < com->ihighwater - && com->state & CS_RTS_IFLOW) -#else - if (!(com->mcr_image & MCR_RTS) && com->iptr < com->ihighwater - && com->state & CS_RTS_IFLOW) -#endif -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - com_tiocm_bis(com, TIOCM_RTS); - else -#endif - outb(com->modem_ctl_port, com->mcr_image |= MCR_RTS); - } - enable_intr(); - if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) { - ttwwakeup(tp); -#ifdef PC98 -/* if(IS_8251(com->pc98_if_type)) - com_int_Tx_enable(com); */ -#endif - splx(s); - return; - } - if (tp->t_outq.c_cc != 0) { - struct lbq *qp; - struct lbq *next; - - if (!com->obufs[0].l_queued) { - com->obufs[0].l_tail - = com->obuf1 + q_to_b(&tp->t_outq, com->obuf1, -#ifndef PC98 - sizeof com->obuf1); -#else - com->CE_INPUT_OFFSET); -#endif - com->obufs[0].l_next = NULL; - com->obufs[0].l_queued = TRUE; - disable_intr(); - if (com->state & CS_BUSY) { - qp = com->obufq.l_next; - while ((next = qp->l_next) != NULL) - qp = next; - qp->l_next = &com->obufs[0]; - } else { - com->obufq.l_head = com->obufs[0].l_head; - com->obufq.l_tail = com->obufs[0].l_tail; - com->obufq.l_next = &com->obufs[0]; - com->state |= CS_BUSY; - } - enable_intr(); - } - if (tp->t_outq.c_cc != 0 && !com->obufs[1].l_queued) { - com->obufs[1].l_tail - = com->obuf2 + q_to_b(&tp->t_outq, com->obuf2, -#ifndef PC98 - sizeof com->obuf2); -#else - com->CE_INPUT_OFFSET); -#endif - com->obufs[1].l_next = NULL; - com->obufs[1].l_queued = TRUE; - disable_intr(); - if (com->state & CS_BUSY) { - qp = com->obufq.l_next; - while ((next = qp->l_next) != NULL) - qp = next; - qp->l_next = &com->obufs[1]; - } else { - com->obufq.l_head = com->obufs[1].l_head; - com->obufq.l_tail = com->obufs[1].l_tail; - com->obufq.l_next = &com->obufs[1]; - com->state |= CS_BUSY; - } - enable_intr(); - } - tp->t_state |= TS_BUSY; - } - disable_intr(); - if (com->state >= (CS_BUSY | CS_TTGO)) - siointr1(com); /* fake interrupt to start output */ - enable_intr(); -#ifdef PC98 -/* if(IS_8251(com->pc98_if_type)) - com_int_Tx_enable(com); */ -#endif - ttwwakeup(tp); - splx(s); -} - -static void -siostop(tp, rw) - struct tty *tp; - int rw; -{ - struct com_s *com; -#ifdef PC98 - int port_shift = 0; - int rsa98_tmp = 0; -#endif - - com = com_addr(DEV_TO_UNIT(tp->t_dev)); - if (com->gone) - return; -#ifdef PC98 - if (IS_8251(com->pc98_if_type)) - port_shift = if_16550a_type[com->pc98_if_type & 0x0f].port_shift; -#endif - disable_intr(); - if (rw & FWRITE) { - if (com->hasfifo) -#ifdef COM_ESP - /* XXX avoid h/w bug. */ - if (!com->esp) -#endif -#ifdef PC98 - outb(com->iobase + (com_fifo << port_shift), - FIFO_XMT_RST | com->fifo_image); - if (com->pc98_if_type == COM_IF_RSA98III) - for(rsa98_tmp = 0; rsa98_tmp < 2048; rsa98_tmp++) - outb(com->iobase + (com_fifo << port_shift), - FIFO_XMT_RST | com->fifo_image); -#else - outb(com->iobase + com_fifo, - FIFO_XMT_RST | com->fifo_image); -#endif - com->obufs[0].l_queued = FALSE; - com->obufs[1].l_queued = FALSE; - if (com->state & CS_ODONE) - com_events -= LOTS_OF_EVENTS; - com->state &= ~(CS_ODONE | CS_BUSY); - com->tp->t_state &= ~TS_BUSY; - } - if (rw & FREAD) { - if (com->hasfifo) -#ifdef COM_ESP - /* XXX avoid h/w bug. */ - if (!com->esp) -#endif -#ifdef PC98 - if (com->pc98_if_type == COM_IF_RSA98III) { - for(rsa98_tmp = 0; rsa98_tmp < 2048; rsa98_tmp++) - inb(com->data_port); - } - outb(com->iobase + (com_fifo << port_shift), - FIFO_RCV_RST | com->fifo_image); -#else - outb(com->iobase + com_fifo, - FIFO_RCV_RST | com->fifo_image); -#endif - com_events -= (com->iptr - com->ibuf); - com->iptr = com->ibuf; - } - enable_intr(); - comstart(tp); -} - -static struct tty * -siodevtotty(dev) - dev_t dev; -{ - int mynor; - int unit; - - mynor = minor(dev); - if (mynor & CONTROL_MASK) - return (NULL); - unit = MINOR_TO_UNIT(mynor); - if ((u_int) unit >= NSIOTOT) - return (NULL); - return (&sio_tty[unit]); -} - -static int -commctl(com, bits, how) - struct com_s *com; - int bits; - int how; -{ - int mcr; - int msr; - - if (how == DMGET) { - bits = TIOCM_LE; /* XXX - always enabled while open */ - mcr = com->mcr_image; - if (mcr & MCR_DTR) - bits |= TIOCM_DTR; - if (mcr & MCR_RTS) - bits |= TIOCM_RTS; - msr = com->prev_modem_status; - if (msr & MSR_CTS) - bits |= TIOCM_CTS; - if (msr & MSR_DCD) - bits |= TIOCM_CD; - if (msr & MSR_DSR) - bits |= TIOCM_DSR; - /* - * XXX - MSR_RI is naturally volatile, and we make MSR_TERI - * more volatile by reading the modem status a lot. Perhaps - * we should latch both bits until the status is read here. - */ - if (msr & (MSR_RI | MSR_TERI)) - bits |= TIOCM_RI; - return (bits); - } - mcr = 0; - if (bits & TIOCM_DTR) - mcr |= MCR_DTR; - if (bits & TIOCM_RTS) - mcr |= MCR_RTS; - if (com->gone) - return(0); - disable_intr(); - switch (how) { - case DMSET: - outb(com->modem_ctl_port, - com->mcr_image = mcr | (com->mcr_image & MCR_IENABLE)); - break; - case DMBIS: - outb(com->modem_ctl_port, com->mcr_image |= mcr); - break; - case DMBIC: - outb(com->modem_ctl_port, com->mcr_image &= ~mcr); - break; - } - enable_intr(); - return (0); -} - -static void -siosettimeout() -{ - struct com_s *com; - bool_t someopen; - int unit; - - /* - * Set our timeout period to 1 second if no polled devices are open. - * Otherwise set it to max(1/200, 1/hz). - * Enable timeouts iff some device is open. - */ - untimeout(comwakeup, (void *)NULL, sio_timeout_handle); - sio_timeout = hz; - someopen = FALSE; - for (unit = 0; unit < NSIOTOT; ++unit) { - com = com_addr(unit); - if (com != NULL && com->tp != NULL - && com->tp->t_state & TS_ISOPEN && !com->gone) { - someopen = TRUE; - if (com->poll || com->poll_output) { - sio_timeout = hz > 200 ? hz / 200 : 1; - break; - } - } - } - if (someopen) { - sio_timeouts_until_log = hz / sio_timeout; - sio_timeout_handle = timeout(comwakeup, (void *)NULL, - sio_timeout); - } else { - /* Flush error messages, if any. */ - sio_timeouts_until_log = 1; - comwakeup((void *)NULL); - untimeout(comwakeup, (void *)NULL, sio_timeout_handle); - } -} - -static void -comwakeup(chan) - void *chan; -{ - struct com_s *com; - int unit; - - sio_timeout_handle = timeout(comwakeup, (void *)NULL, sio_timeout); - - /* - * Recover from lost output interrupts. - * Poll any lines that don't use interrupts. - */ - for (unit = 0; unit < NSIOTOT; ++unit) { - com = com_addr(unit); - if (com != NULL && !com->gone - && (com->state >= (CS_BUSY | CS_TTGO) || com->poll)) { - disable_intr(); - siointr1(com); - enable_intr(); - } - } - - /* - * Check for and log errors, but not too often. - */ - if (--sio_timeouts_until_log > 0) - return; - sio_timeouts_until_log = hz / sio_timeout; - for (unit = 0; unit < NSIOTOT; ++unit) { - int errnum; - - com = com_addr(unit); - if (com == NULL) - continue; - if (com->gone) - continue; - for (errnum = 0; errnum < CE_NTYPES; ++errnum) { - u_int delta; - u_long total; - - disable_intr(); - delta = com->delta_error_counts[errnum]; - com->delta_error_counts[errnum] = 0; - enable_intr(); - if (delta == 0) - continue; - total = com->error_counts[errnum] += delta; - log(LOG_ERR, "sio%d: %u more %s%s (total %lu)\n", - unit, delta, error_desc[errnum], - delta == 1 ? "" : "s", total); - } - } -} - -#ifdef PC98 -/* commint is called when modem control line changes */ -static void -commint(dev_t dev) -{ - register struct tty *tp; - int stat,delta; - struct com_s *com; - int mynor,unit; - - mynor = minor(dev); - unit = MINOR_TO_UNIT(mynor); - com = com_addr(unit); - tp = com->tp; - - stat = com_tiocm_get(com); - delta = com_tiocm_get_delta(com); - - if (com->state & CS_CTS_OFLOW) { - if (stat & TIOCM_CTS) - com->state |= CS_ODEVREADY; - else - com->state &= ~CS_ODEVREADY; - } - if ((delta & TIOCM_CAR) && (mynor & CALLOUT_MASK) == 0) { - if (stat & TIOCM_CAR ) - (void)(*linesw[tp->t_line].l_modem)(tp, 1); - else if ((*linesw[tp->t_line].l_modem)(tp, 0) == 0) { - /* negate DTR, RTS */ - com_tiocm_bic(com, (tp->t_cflag & HUPCL) ? - TIOCM_DTR|TIOCM_RTS|TIOCM_LE : TIOCM_LE ); - /* disable IENABLE */ - com_int_TxRx_disable( com ); - } - } -} -#endif - -static void -disc_optim(tp, t, com) - struct tty *tp; - struct termios *t; - struct com_s *com; -{ - if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) - && (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) - && (!(t->c_iflag & PARMRK) - || (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) - && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) - && linesw[tp->t_line].l_rint == ttyinput) - tp->t_state |= TS_CAN_BYPASS_L_RINT; - else - tp->t_state &= ~TS_CAN_BYPASS_L_RINT; - com->hotchar = linesw[tp->t_line].l_hotchar; -} - -/* - * Following are all routines needed for SIO to act as console - */ -#include <machine/cons.h> - -struct siocnstate { - u_char dlbl; - u_char dlbh; - u_char ier; - u_char cfcr; - u_char mcr; -}; - -static speed_t siocngetspeed __P((Port_t, struct speedtab *)); -static void siocnclose __P((struct siocnstate *sp)); -static void siocnopen __P((struct siocnstate *sp)); -static void siocntxwait __P((void)); - -/* - * XXX: sciocnget() and sciocnputc() are not declared static, as they are - * referred to from i386/i386/i386-gdbstub.c. - */ -static cn_probe_t siocnprobe; -static cn_init_t siocninit; -static cn_checkc_t siocncheckc; - cn_getc_t siocngetc; - cn_putc_t siocnputc; - -CONS_DRIVER(sio, siocnprobe, siocninit, siocngetc, siocncheckc, siocnputc); - -static void -siocntxwait() -{ - int timo; - - /* - * Wait for any pending transmission to finish. Required to avoid - * the UART lockup bug when the speed is changed, and for normal - * transmits. - */ - timo = 100000; - while ((inb(siocniobase + com_lsr) & (LSR_TSRE | LSR_TXRDY)) - != (LSR_TSRE | LSR_TXRDY) && --timo != 0) - ; -} - -/* - * Read the serial port specified and try to figure out what speed - * it's currently running at. We're assuming the serial port has - * been initialized and is basicly idle. This routine is only intended - * to be run at system startup. - * - * If the value read from the serial port doesn't make sense, return 0. - */ - -static speed_t -siocngetspeed(iobase, table) - Port_t iobase; - struct speedtab *table; -{ - int code; - u_char dlbh; - u_char dlbl; - u_char cfcr; - - cfcr = inb(iobase + com_cfcr); - outb(iobase + com_cfcr, CFCR_DLAB | cfcr); - - dlbl = inb(iobase + com_dlbl); - dlbh = inb(iobase + com_dlbh); - - outb(iobase + com_cfcr, cfcr); - - code = dlbh << 8 | dlbl; - - for ( ; table->sp_speed != -1; table++) - if (table->sp_code == code) - return (table->sp_speed); - - return 0; /* didn't match anything sane */ -} - -static void -siocnopen(sp) - struct siocnstate *sp; -{ - int divisor; - u_char dlbh; - u_char dlbl; - Port_t iobase; - - /* - * Save all the device control registers except the fifo register - * and set our default ones (cs8 -parenb speed=comdefaultrate). - * We can't save the fifo register since it is read-only. - */ - iobase = siocniobase; - sp->ier = inb(iobase + com_ier); - outb(iobase + com_ier, 0); /* spltty() doesn't stop siointr() */ - siocntxwait(); - sp->cfcr = inb(iobase + com_cfcr); - outb(iobase + com_cfcr, CFCR_DLAB | CFCR_8BITS); - sp->dlbl = inb(iobase + com_dlbl); - sp->dlbh = inb(iobase + com_dlbh); - /* - * Only set the divisor registers if they would change, since on - * some 16550 incompatibles (Startech), setting them clears the - * data input register. This also reduces the effects of the - * UMC8669F bug. - */ - divisor = ttspeedtab(comdefaultrate, comspeedtab); - dlbl = divisor & 0xFF; - if (sp->dlbl != dlbl) - outb(iobase + com_dlbl, dlbl); - dlbh = (u_int) divisor >> 8; - if (sp->dlbh != dlbh) - outb(iobase + com_dlbh, dlbh); - outb(iobase + com_cfcr, CFCR_8BITS); - sp->mcr = inb(iobase + com_mcr); - /* - * We don't want interrupts, but must be careful not to "disable" - * them by clearing the MCR_IENABLE bit, since that might cause - * an interrupt by floating the IRQ line. - */ - outb(iobase + com_mcr, (sp->mcr & MCR_IENABLE) | MCR_DTR | MCR_RTS); -} - -static void -siocnclose(sp) - struct siocnstate *sp; -{ - Port_t iobase; - - /* - * Restore the device control registers. - */ - siocntxwait(); - iobase = siocniobase; - outb(iobase + com_cfcr, CFCR_DLAB | CFCR_8BITS); - if (sp->dlbl != inb(iobase + com_dlbl)) - outb(iobase + com_dlbl, sp->dlbl); - if (sp->dlbh != inb(iobase + com_dlbh)) - outb(iobase + com_dlbh, sp->dlbh); - outb(iobase + com_cfcr, sp->cfcr); - /* - * XXX damp oscillations of MCR_DTR and MCR_RTS by not restoring them. - */ - outb(iobase + com_mcr, sp->mcr | MCR_DTR | MCR_RTS); - outb(iobase + com_ier, sp->ier); -} - -static void -siocnprobe(cp) - struct consdev *cp; -{ - speed_t boot_speed; - u_char cfcr; - struct isa_device *dvp; - int s; - struct siocnstate sp; - - /* - * Find our first enabled console, if any. If it is a high-level - * console device, then initialize it and return successfully. - * If it is a low-level console device, then initialize it and - * return unsuccessfully. It must be initialized in both cases - * for early use by console drivers and debuggers. Initializing - * the hardware is not necessary in all cases, since the i/o - * routines initialize it on the fly, but it is necessary if - * input might arrive while the hardware is switched back to an - * uninitialized state. We can't handle multiple console devices - * yet because our low-level routines don't take a device arg. - * We trust the user to set the console flags properly so that we - * don't need to probe. - */ - cp->cn_pri = CN_DEAD; - for (dvp = isa_devtab_tty; dvp->id_driver != NULL; dvp++) - if (dvp->id_driver == &siodriver && dvp->id_enabled - && COM_CONSOLE(dvp)) { - siocniobase = dvp->id_iobase; - s = spltty(); - if (boothowto & RB_SERIAL) { - boot_speed = siocngetspeed(siocniobase, - comspeedtab); - if (boot_speed) - comdefaultrate = boot_speed; - } - - /* - * Initialize the divisor latch. We can't rely on - * siocnopen() to do this the first time, since it - * avoids writing to the latch if the latch appears - * to have the correct value. Also, if we didn't - * just read the speed from the hardware, then we - * need to set the speed in hardware so that - * switching it later is null. - */ - cfcr = inb(siocniobase + com_cfcr); - outb(siocniobase + com_cfcr, CFCR_DLAB | cfcr); - outb(siocniobase + com_dlbl, - COMBRD(comdefaultrate) & 0xff); - outb(siocniobase + com_dlbh, - (u_int) COMBRD(comdefaultrate) >> 8); - outb(siocniobase + com_cfcr, cfcr); - - siocnopen(&sp); - splx(s); - if (!COM_LLCONSOLE(dvp)) { - cp->cn_dev = makedev(CDEV_MAJOR, dvp->id_unit); - cp->cn_pri = COM_FORCECONSOLE(dvp) - || boothowto & RB_SERIAL - ? CN_REMOTE : CN_NORMAL; - } - break; - } -} - -static void -siocninit(cp) - struct consdev *cp; -{ - comconsole = DEV_TO_UNIT(cp->cn_dev); -} - -static int -siocncheckc(dev) - dev_t dev; -{ - int c; - Port_t iobase; - int s; - struct siocnstate sp; - - iobase = siocniobase; - s = spltty(); - siocnopen(&sp); - if (inb(iobase + com_lsr) & LSR_RXRDY) - c = inb(iobase + com_data); - else - c = -1; - siocnclose(&sp); - splx(s); - return (c); -} - - -int -siocngetc(dev) - dev_t dev; -{ - int c; - Port_t iobase; - int s; - struct siocnstate sp; - - iobase = siocniobase; - s = spltty(); - siocnopen(&sp); - while (!(inb(iobase + com_lsr) & LSR_RXRDY)) - ; - c = inb(iobase + com_data); - siocnclose(&sp); - splx(s); - return (c); -} - -void -siocnputc(dev, c) - dev_t dev; - int c; -{ - int s; - struct siocnstate sp; - - s = spltty(); - siocnopen(&sp); - siocntxwait(); - outb(siocniobase + com_data, c); - siocnclose(&sp); - splx(s); -} - - -/* - * support PnP cards if we are using 'em - */ - -#if NPNP > 0 - -static pnpid_t siopnp_ids[] = { - { 0x5015f435, "MOT1550"}, - { 0x8113b04e, "Supra1381"}, - { 0x9012b04e, "Supra1290"}, - { 0x7121b04e, "SupraExpress 56i Sp"}, - { 0x11007256, "USR0011"}, - { 0x30207256, "USR2030"}, - { 0 } -}; - -static char *siopnp_probe(u_long csn, u_long vend_id); -static void siopnp_attach(u_long csn, u_long vend_id, char *name, - struct isa_device *dev); -static u_long nsiopnp = NSIO; - -static struct pnp_device siopnp = { - "siopnp", - siopnp_probe, - siopnp_attach, - &nsiopnp, - &tty_imask -}; -DATA_SET (pnpdevice_set, siopnp); - -static char * -siopnp_probe(u_long csn, u_long vend_id) -{ - pnpid_t *id; - char *s = NULL; - - for(id = siopnp_ids; id->vend_id != 0; id++) { - if (vend_id == id->vend_id) { - s = id->id_str; - break; - } - } - - if (s) { - struct pnp_cinfo d; - read_pnp_parms(&d, 0); - if (d.enable == 0 || d.flags & 1) { - printf("CSN %lu is disabled.\n", csn); - return (NULL); - } - - } - - return (s); -} - -static void -siopnp_attach(u_long csn, u_long vend_id, char *name, struct isa_device *dev) -{ - struct pnp_cinfo d; - struct isa_device *dvp; - - if (dev->id_unit >= NSIOTOT) - return; - - if (read_pnp_parms(&d, 0) == 0) { - printf("failed to read pnp parms\n"); - return; - } - - write_pnp_parms(&d, 0); - - enable_pnp_card(); - - dev->id_iobase = d.port[0]; - dev->id_irq = (1 << d.irq[0]); - dev->id_ointr = siointr; - dev->id_ri_flags = RI_FAST; - dev->id_drq = -1; - - if (dev->id_driver == NULL) { - dev->id_driver = &siodriver; - dvp = find_isadev(isa_devtab_tty, &siodriver, 0); - if (dvp != NULL) - dev->id_id = dvp->id_id; - } - - if ((dev->id_alive = sioprobe(dev)) != 0) - sioattach(dev); - else - printf("sio%d: probe failed\n", dev->id_unit); -} -#endif - -#ifdef PC98 -/* - * pc98 local function - */ - -static void -com_tiocm_set(struct com_s *com, int msr) -{ - int s; - int tmp = 0; - int mask = CMD8251_TxEN|CMD8251_RxEN|CMD8251_DTR|CMD8251_RTS; - - s=spltty(); - com->pc98_prev_modem_status = ( msr & (TIOCM_LE|TIOCM_DTR|TIOCM_RTS) ) - | ( com->pc98_prev_modem_status & ~(TIOCM_LE|TIOCM_DTR|TIOCM_RTS) ); - tmp |= (CMD8251_TxEN|CMD8251_RxEN); - if ( msr & TIOCM_DTR ) tmp |= CMD8251_DTR; - if ( msr & TIOCM_RTS ) tmp |= CMD8251_RTS; - pc98_i8251_clear_or_cmd( com, mask, tmp ); - splx(s); -} - -static void -com_tiocm_bis(struct com_s *com, int msr) -{ - int s; - int tmp = 0; - - s=spltty(); - com->pc98_prev_modem_status |= ( msr & (TIOCM_LE|TIOCM_DTR|TIOCM_RTS) ); - tmp |= CMD8251_TxEN|CMD8251_RxEN; - if ( msr & TIOCM_DTR ) tmp |= CMD8251_DTR; - if ( msr & TIOCM_RTS ) tmp |= CMD8251_RTS; - - pc98_i8251_or_cmd( com, tmp ); - splx(s); -} - -static void -com_tiocm_bic(struct com_s *com, int msr) -{ - int s; - int tmp = msr; - - s=spltty(); - com->pc98_prev_modem_status &= ~( msr & (TIOCM_LE|TIOCM_DTR|TIOCM_RTS) ); - if ( msr & TIOCM_DTR ) tmp |= CMD8251_DTR; - if ( msr & TIOCM_RTS ) tmp |= CMD8251_RTS; - - pc98_i8251_clear_cmd( com, tmp ); - splx(s); -} - -static int -com_tiocm_get(struct com_s *com) -{ - return( com->pc98_prev_modem_status ); -} - -static int -com_tiocm_get_delta(struct com_s *com) -{ - int tmp; - - tmp = com->pc98_modem_delta; - com->pc98_modem_delta = 0; - return( tmp ); -} - -/* convert to TIOCM_?? ( ioctl.h ) */ -static int -pc98_get_modem_status(struct com_s *com) -{ - int stat, stat2; - register int msr; - - stat = inb(com->sts_port); - stat2 = inb(com->in_modem_port); - msr = com->pc98_prev_modem_status - & ~(TIOCM_CAR|TIOCM_RI|TIOCM_DSR|TIOCM_CTS); - if ( !(stat2 & CICSCD_CD) ) msr |= TIOCM_CAR; - if ( !(stat2 & CICSCD_CI) ) msr |= TIOCM_RI; - if ( stat & STS8251_DSR ) msr |= TIOCM_DSR; - if ( !(stat2 & CICSCD_CS) ) msr |= TIOCM_CTS; -#if COM_CARRIER_DETECT_EMULATE - if ( msr & (TIOCM_DSR|TIOCM_CTS) ) { - msr |= TIOCM_CAR; - } -#endif - return(msr); -} - -static void -pc98_check_msr(void* chan) -{ - int msr, delta; - int s; - register struct tty *tp; - struct com_s *com; - int mynor; - int unit; - dev_t dev; - - dev=(dev_t)chan; - mynor = minor(dev); - unit = MINOR_TO_UNIT(mynor); - com = com_addr(unit); - tp = com->tp; - - s = spltty(); - msr = pc98_get_modem_status(com); - /* make change flag */ - delta = msr ^ com->pc98_prev_modem_status; - if ( delta & TIOCM_CAR ) { - if ( com->modem_car_chg_timer ) { - if ( -- com->modem_car_chg_timer ) - msr ^= TIOCM_CAR; - } else { - if ( com->modem_car_chg_timer = ( msr & TIOCM_CAR ) ? - DCD_ON_RECOGNITION : DCD_OFF_TOLERANCE ) - msr ^= TIOCM_CAR; - } - } else - com->modem_car_chg_timer = 0; - delta = ( msr ^ com->pc98_prev_modem_status ) & - (TIOCM_CAR|TIOCM_RI|TIOCM_DSR|TIOCM_CTS); - com->pc98_prev_modem_status = msr; - delta = ( com->pc98_modem_delta |= delta ); - splx(s); - if ( com->modem_checking || (tp->t_state & (TS_ISOPEN)) ) { - if ( delta ) { - commint(dev); - } - timeout(pc98_check_msr, (caddr_t)dev, - PC98_CHECK_MODEM_INTERVAL); - } else { - com->modem_checking = 0; - } -} - -static void -pc98_msrint_start(dev_t dev) -{ - struct com_s *com; - int mynor; - int unit; - int s = spltty(); - - mynor = minor(dev); - unit = MINOR_TO_UNIT(mynor); - com = com_addr(unit); - /* modem control line check routine envoke interval is 1/10 sec */ - if ( com->modem_checking == 0 ) { - com->pc98_prev_modem_status = pc98_get_modem_status(com); - com->pc98_modem_delta = 0; - timeout(pc98_check_msr, (caddr_t)dev, - PC98_CHECK_MODEM_INTERVAL); - com->modem_checking = 1; - } - splx(s); -} - -static void -pc98_disable_i8251_interrupt(struct com_s *com, int mod) -{ - /* disable interrupt */ - register int tmp; - - mod |= ~(IEN_Tx|IEN_TxEMP|IEN_Rx); - COM_INT_DISABLE - tmp = inb( com->intr_ctrl_port ) & ~(IEN_Tx|IEN_TxEMP|IEN_Rx); - outb( com->intr_ctrl_port, (com->intr_enable&=~mod) | tmp ); - COM_INT_ENABLE -} - -static void -pc98_enable_i8251_interrupt(struct com_s *com, int mod) -{ - register int tmp; - - COM_INT_DISABLE - tmp = inb( com->intr_ctrl_port ) & ~(IEN_Tx|IEN_TxEMP|IEN_Rx); - outb( com->intr_ctrl_port, (com->intr_enable|=mod) | tmp ); - COM_INT_ENABLE -} - -static int -pc98_check_i8251_interrupt(struct com_s *com) -{ - return ( com->intr_enable & 0x07 ); -} - -static void -pc98_i8251_clear_cmd(struct com_s *com, int x) -{ - int tmp; - - COM_INT_DISABLE - tmp = com->pc98_prev_siocmd & ~(x); - outb(com->cmd_port, tmp); - com->pc98_prev_siocmd = tmp & ~(CMD8251_ER|CMD8251_RESET|CMD8251_EH); - COM_INT_ENABLE -} - -static void -pc98_i8251_or_cmd(struct com_s *com, int x) -{ - int tmp; - - COM_INT_DISABLE - tmp = com->pc98_prev_siocmd | (x); - outb(com->cmd_port, tmp); - com->pc98_prev_siocmd = tmp & ~(CMD8251_ER|CMD8251_RESET|CMD8251_EH); - COM_INT_ENABLE -} - -static void -pc98_i8251_set_cmd(struct com_s *com, int x) -{ - int tmp; - - COM_INT_DISABLE - tmp = (x); - outb(com->cmd_port, tmp); - com->pc98_prev_siocmd = tmp & ~(CMD8251_ER|CMD8251_RESET|CMD8251_EH); - COM_INT_ENABLE -} - -static void -pc98_i8251_clear_or_cmd(struct com_s *com, int clr, int x) -{ - int tmp; - COM_INT_DISABLE - tmp = com->pc98_prev_siocmd & ~(clr); - tmp |= (x); - outb(com->cmd_port, tmp); - com->pc98_prev_siocmd = tmp & ~(CMD8251_ER|CMD8251_RESET|CMD8251_EH); - COM_INT_ENABLE -} - -static int -pc98_i8251_get_cmd(struct com_s *com) -{ - return com->pc98_prev_siocmd; -} - -static int -pc98_i8251_get_mod(struct com_s *com) -{ - return com->pc98_prev_siomod; -} - -static void -pc98_i8251_reset(struct com_s *com, int mode, int command) -{ - outb(com->cmd_port, 0); /* dummy */ - DELAY(2); - outb(com->cmd_port, 0); /* dummy */ - DELAY(2); - outb(com->cmd_port, 0); /* dummy */ - DELAY(2); - outb(com->cmd_port, CMD8251_RESET); /* internal reset */ - DELAY(2); - outb(com->cmd_port, mode ); /* mode register */ - com->pc98_prev_siomod = mode; - DELAY(2); - pc98_i8251_set_cmd( com, (command|CMD8251_ER) ); -} - -static void -pc98_check_sysclock(void) -{ - /* get system clock from port */ - if ( pc98_machine_type & M_8M ) { - /* 8 MHz system & H98 */ - sysclock = 8; - } else { - /* 5 MHz system */ - sysclock = 5; - } -} - -static void -com_cflag_and_speed_set( struct com_s *com, int cflag, int speed) -{ - int cfcr=0, count; - int previnterrupt; - - count = pc98_ttspeedtab( com, speed ); - if ( count < 0 ) return; - - previnterrupt = pc98_check_i8251_interrupt(com); - pc98_disable_i8251_interrupt( com, IEN_Tx|IEN_TxEMP|IEN_Rx ); - - switch ( cflag&CSIZE ) { - case CS5: - cfcr = MOD8251_5BITS; break; - case CS6: - cfcr = MOD8251_6BITS; break; - case CS7: - cfcr = MOD8251_7BITS; break; - case CS8: - cfcr = MOD8251_8BITS; break; - } - if ( cflag&PARENB ) { - if ( cflag&PARODD ) - cfcr |= MOD8251_PODD; - else - cfcr |= MOD8251_PEVEN; - } else - cfcr |= MOD8251_PDISAB; - - if ( cflag&CSTOPB ) - cfcr |= MOD8251_STOP2; - else - cfcr |= MOD8251_STOP1; - - if ( count & 0x10000 ) - cfcr |= MOD8251_CLKX1; - else - cfcr |= MOD8251_CLKX16; - - if (epson_machine_id != 0x20) { /* XXX */ - int tmp; - while (!((tmp = inb(com->sts_port)) & STS8251_TxEMP)) - ; - } - /* set baud rate from ospeed */ - pc98_set_baud_rate( com, count ); - - if ( cfcr != pc98_i8251_get_mod(com) ) - pc98_i8251_reset(com, cfcr, pc98_i8251_get_cmd(com) ); - - pc98_enable_i8251_interrupt( com, previnterrupt ); -} - -static int -pc98_ttspeedtab(struct com_s *com, int speed) -{ - int if_type, effect_sp, count = -1, mod; - - if_type = com->pc98_if_type & 0x0f; - - switch (com->pc98_if_type) { - case COM_IF_INTERNAL: - if (PC98SIO_baud_rate_port(if_type) != -1) { - count = ttspeedtab(speed, if_8251_type[if_type].speedtab); - if (count > 0) { - count |= COM1_EXT_CLOCK; - break; - } - } - - /* for *1CLK asynchronous! mode, TEFUTEFU */ - mod = (sysclock == 5) ? 2457600 : 1996800; - effect_sp = ttspeedtab( speed, pc98speedtab ); - if ( effect_sp < 0 ) /* XXX */ - effect_sp = ttspeedtab( (speed - 1), pc98speedtab ); - if ( effect_sp <= 0 ) - return effect_sp; - if ( effect_sp == speed ) - mod /= 16; - if ( mod % effect_sp ) - return(-1); - count = mod / effect_sp; - if ( count > 65535 ) - return(-1); - if ( effect_sp != speed ) - count |= 0x10000; - break; - case COM_IF_PC9861K_1: - case COM_IF_PC9861K_2: - count = 1; - break; - case COM_IF_IND_SS_1: - case COM_IF_IND_SS_2: - case COM_IF_PIO9032B_1: - case COM_IF_PIO9032B_2: - if ( speed == 0 ) return 0; - count = ttspeedtab( speed, if_8251_type[if_type].speedtab ); - break; - case COM_IF_B98_01_1: - case COM_IF_B98_01_2: - if ( speed == 0 ) return 0; - count = ttspeedtab( speed, if_8251_type[if_type].speedtab ); -#ifdef B98_01_OLD - if (count == 0 || count == 1) { - count += 4; - count |= 0x20000; /* x1 mode for 76800 and 153600 */ - } -#endif - break; - } - - return count; -} - -static void -pc98_set_baud_rate( struct com_s *com, int count ) -{ - int if_type, io, s; - - if_type = com->pc98_if_type & 0x0f; - io = com->iobase & 0xff00; - - switch (com->pc98_if_type) { - case COM_IF_INTERNAL: - if (PC98SIO_baud_rate_port(if_type) != -1) { - if (count & COM1_EXT_CLOCK) { - outb((Port_t)PC98SIO_baud_rate_port(if_type), count & 0xff); - break; - } else { - outb((Port_t)PC98SIO_baud_rate_port(if_type), 0x09); - } - } - - if ( count < 0 ) { - printf( "[ Illegal count : %d ]", count ); - return; - } else if ( count == 0 ) - return; - /* set i8253 */ - s = splclock(); - if (count != 3) - outb( 0x77, 0xb6 ); - else - outb( 0x77, 0xb4 ); - outb( 0x5f, 0); - outb( 0x75, count & 0xff ); - outb( 0x5f, 0); - outb( 0x75, (count >> 8) & 0xff ); - splx(s); - break; - case COM_IF_IND_SS_1: - case COM_IF_IND_SS_2: - outb(io | PC98SIO_intr_ctrl_port(if_type), 0); - outb(io | PC98SIO_baud_rate_port(if_type), 0); - outb(io | PC98SIO_baud_rate_port(if_type), 0xc0); - outb(io | PC98SIO_baud_rate_port(if_type), (count >> 8) | 0x80); - outb(io | PC98SIO_baud_rate_port(if_type), count & 0xff); - break; - case COM_IF_PIO9032B_1: - case COM_IF_PIO9032B_2: - outb(io | PC98SIO_baud_rate_port(if_type), count); - break; - case COM_IF_B98_01_1: - case COM_IF_B98_01_2: - outb(io | PC98SIO_baud_rate_port(if_type), count & 0x0f); -#ifdef B98_01_OLD - /* - * Some old B98_01 board should be controlled - * in different way, but this hasn't been tested yet. - */ - outb(io | PC98SIO_func_port(if_type), - (count & 0x20000) ? 0xf0 : 0xf2); -#endif - break; - } -} -static int -pc98_check_if_type(struct isa_device *dev, struct siodev *iod) -{ - int irr, io, if_type, tmp; - static short irq_tab[2][8] = { - { 3, 5, 6, 9, 10, 12, 13, -1}, - { 3, 10, 12, 13, 5, 6, 9, -1} - }; - - iod->if_type = if_type = (dev->id_flags >> 24) & 0xff; - if ((if_type < 0 || if_type > COM_IF_END1) && - (if_type < 0x10 || if_type > COM_IF_END2)) - return(-1); - if_type &= 0x0f; - iod->irq = 0; - io = dev->id_iobase & 0xff00; - - if (IS_8251(iod->if_type)) { - if (PC98SIO_func_port(if_type) != -1) { - outb(io | PC98SIO_func_port(if_type), 0xf2); - tmp = ttspeedtab(9600, if_8251_type[if_type].speedtab); - if (tmp != -1 && PC98SIO_baud_rate_port(if_type) != -1) - outb(io | PC98SIO_baud_rate_port(if_type), tmp); - } - - iod->cmd = io | PC98SIO_cmd_port(if_type); - iod->sts = io | PC98SIO_sts_port(if_type); - iod->mod = io | PC98SIO_in_modem_port(if_type); - iod->ctrl = io | PC98SIO_intr_ctrl_port(if_type); - - if (iod->if_type == COM_IF_INTERNAL) { - iod->irq = 4; - - /* XXX check new internal port. */ - outb(0x138, 0); - DELAY(10); - for (tmp = 0; tmp < 100; tmp++) { - if ((inb(0x138) & 1) == 0) { - PC98SIO_baud_rate_port(if_type) = 0x13a; - if_8251_type[if_type].name = " (internal fast)"; - if_8251_type[if_type].speedtab = pc98fast_speedtab; - break; - } - DELAY(1); - } - } else { - tmp = inb( iod->mod ) & if_8251_type[if_type].irr_mask; - if ((dev->id_iobase & 0xff) == IO_COM2) - iod->irq = irq_tab[0][tmp]; - else - iod->irq = irq_tab[1][tmp]; - } - } else { - irr = if_16550a_type[if_type].irr_read; -#ifdef COM_MULTIPORT - if (!COM_ISMULTIPORT(dev) || dev->id_unit == COM_MPMASTER(dev)) -#endif - if (irr != -1) { - tmp = inb(io | irr); - if (dev->id_iobase & 0x01) /* XXX depend on RSB-384 */ - iod->irq = irq_tab[1][tmp >> 3]; - else - iod->irq = irq_tab[0][tmp & 0x07]; - } - } - if ( iod->irq == -1 ) return -1; - - return 0; -} -static int -pc98_set_ioport( struct com_s *com, int id_flags ) -{ - int io, if_type; - - if_type = (id_flags >> 24) & 0xff; - if (IS_8251(if_type)) { - pc98_check_sysclock(); - io = com->iobase & 0xff00; - com->pc98_if_type = if_type; - if_type &= 0x0f; - com->data_port = io | PC98SIO_data_port(if_type); - com->cmd_port = io | PC98SIO_cmd_port(if_type); - com->sts_port = io | PC98SIO_sts_port(if_type); - com->in_modem_port = io | PC98SIO_in_modem_port(if_type); - com->intr_ctrl_port = io | PC98SIO_intr_ctrl_port(if_type); - return 0; - } - - return -1; -} -#endif /* PC98 defined */ |