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author | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
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committer | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
commit | 071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch) | |
tree | 5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/ser-go32.c | |
parent | 1730ec6b1848f0f32154277f788fb29f88d8475b (diff) | |
download | fsf-binutils-gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.zip fsf-binutils-gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.gz fsf-binutils-gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.bz2 |
Initial creation of sourceware repository
Diffstat (limited to 'gdb/ser-go32.c')
-rw-r--r-- | gdb/ser-go32.c | 958 |
1 files changed, 0 insertions, 958 deletions
diff --git a/gdb/ser-go32.c b/gdb/ser-go32.c deleted file mode 100644 index f776161..0000000 --- a/gdb/ser-go32.c +++ /dev/null @@ -1,958 +0,0 @@ -/* Remote serial interface for local (hardwired) serial ports for - GO32. Copyright 1992, 1993 Free Software Foundation, Inc. - - Contributed by Nigel Stephens, Algorithmics Ltd. (nigel@algor.co.uk). - - This version uses DPMI interrupts to handle buffered i/o - without the separate "asynctsr" program. - - This file is part of GDB. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "defs.h" -#include "gdbcmd.h" -#include "serial.h" - - -/* - * NS16550 UART registers - */ - -#define COM1ADDR 0x3f8 -#define COM2ADDR 0x2f8 -#define COM3ADDR 0x3e8 -#define COM4ADDR 0x3e0 - -#define com_data 0 /* data register (R/W) */ -#define com_dlbl 0 /* divisor latch low (W) */ -#define com_ier 1 /* interrupt enable (W) */ -#define com_dlbh 1 /* divisor latch high (W) */ -#define com_iir 2 /* interrupt identification (R) */ -#define com_fifo 2 /* FIFO control (W) */ -#define com_lctl 3 /* line control register (R/W) */ -#define com_cfcr 3 /* line control register (R/W) */ -#define com_mcr 4 /* modem control register (R/W) */ -#define com_lsr 5 /* line status register (R/W) */ -#define com_msr 6 /* modem status register (R/W) */ - -/* - * Constants for computing 16 bit baud rate divisor (lower byte - * in com_dlbl, upper in com_dlbh) from 1.8432MHz crystal. Divisor is - * 1.8432 MHz / (16 * X) for X bps. If the baud rate can't be set - * to within +- (desired_rate*SPEED_TOLERANCE/1000) bps, we fail. - */ -#define COMTICK (1843200/16) -#define SPEED_TOLERANCE 30 /* thousandths; real == desired +- 3.0% */ - -/* interrupt enable register */ -#define IER_ERXRDY 0x1 /* int on rx ready */ -#define IER_ETXRDY 0x2 /* int on tx ready */ -#define IER_ERLS 0x4 /* int on line status change */ -#define IER_EMSC 0x8 /* int on modem status change */ - -/* interrupt identification register */ -#define IIR_FIFO_MASK 0xc0 /* set if FIFOs are enabled */ -#define IIR_IMASK 0xf /* interrupt cause mask */ -#define IIR_NOPEND 0x1 /* nothing pending */ -#define IIR_RLS 0x6 /* receive line status */ -#define IIR_RXRDY 0x4 /* receive ready */ -#define IIR_RXTOUT 0xc /* receive timeout */ -#define IIR_TXRDY 0x2 /* transmit ready */ -#define IIR_MLSC 0x0 /* modem status */ - - -/* fifo control register */ -#define FIFO_ENABLE 0x01 /* enable fifo */ -#define FIFO_RCV_RST 0x02 /* reset receive fifo */ -#define FIFO_XMT_RST 0x04 /* reset transmit fifo */ -#define FIFO_DMA_MODE 0x08 /* enable dma mode */ -#define FIFO_TRIGGER_1 0x00 /* trigger at 1 char */ -#define FIFO_TRIGGER_4 0x40 /* trigger at 4 chars */ -#define FIFO_TRIGGER_8 0x80 /* trigger at 8 chars */ -#define FIFO_TRIGGER_14 0xc0 /* trigger at 14 chars */ - -/* character format control register */ -#define CFCR_DLAB 0x80 /* divisor latch */ -#define CFCR_SBREAK 0x40 /* send break */ -#define CFCR_PZERO 0x30 /* zero parity */ -#define CFCR_PONE 0x20 /* one parity */ -#define CFCR_PEVEN 0x10 /* even parity */ -#define CFCR_PODD 0x00 /* odd parity */ -#define CFCR_PENAB 0x08 /* parity enable */ -#define CFCR_STOPB 0x04 /* 2 stop bits */ -#define CFCR_8BITS 0x03 /* 8 data bits */ -#define CFCR_7BITS 0x02 /* 7 data bits */ -#define CFCR_6BITS 0x01 /* 6 data bits */ -#define CFCR_5BITS 0x00 /* 5 data bits */ - -/* modem control register */ -#define MCR_LOOPBACK 0x10 /* loopback */ -#define MCR_IENABLE 0x08 /* output 2 = int enable */ -#define MCR_DRS 0x04 /* output 1 = xxx */ -#define MCR_RTS 0x02 /* enable RTS */ -#define MCR_DTR 0x01 /* enable DTR */ - -/* line status register */ -#define LSR_RCV_FIFO 0x80 /* error in receive fifo */ -#define LSR_TSRE 0x40 /* transmitter empty */ -#define LSR_TXRDY 0x20 /* transmitter ready */ -#define LSR_BI 0x10 /* break detected */ -#define LSR_FE 0x08 /* framing error */ -#define LSR_PE 0x04 /* parity error */ -#define LSR_OE 0x02 /* overrun error */ -#define LSR_RXRDY 0x01 /* receiver ready */ -#define LSR_RCV_MASK 0x1f - -/* modem status register */ -#define MSR_DCD 0x80 -#define MSR_RI 0x40 -#define MSR_DSR 0x20 -#define MSR_CTS 0x10 -#define MSR_DDCD 0x08 -#define MSR_TERI 0x04 -#define MSR_DDSR 0x02 -#define MSR_DCTS 0x01 - -#include <sys/dos.h> -#include <sys/go32.h> -#include <sys/dpmi.h> - -/* DPMI Communication */ -static union REGS dpmi_regs; -static struct SREGS dpmi_sregs; - -/* 16550 rx fifo trigger point */ -#define FIFO_TRIGGER FIFO_TRIGGER_4 - -/* input buffer size */ -#define CBSIZE 4096 - -/* return raw 18Hz clock count */ -extern long rawclock (void); - -#define RAWHZ 18 - -#ifdef DOS_STATS -#define CNT_RX 16 -#define CNT_TX 17 -#define CNT_STRAY 18 -#define CNT_ORUN 19 -#define NCNT 20 - -static int intrcnt; -static int cnts[NCNT]; -static char *cntnames[NCNT] = { - /* h/w interrupt counts. */ - "mlsc", "nopend", "txrdy", "?3", - "rxrdy", "?5", "rls", "?7", - "?8", "?9", "?a", "?b", - "rxtout", "?d", "?e", "?f", - /* s/w counts. */ - "rxcnt", "txcnt", "stray", "swoflo" -}; - -#define COUNT(x) cnts[x]++ -#else -#define COUNT(x) -#endif - -/* Main interrupt controller port addresses. */ -#define ICU_BASE 0x20 -#define ICU_OCW2 (ICU_BASE + 0) -#define ICU_MASK (ICU_BASE + 1) - -/* Original interrupt controller mask register. */ -unsigned char icu_oldmask; - -/* Maximum of 8 interrupts (we don't handle the slave icu yet). */ -#define NINTR 8 - -static struct intrupt -{ - char inuse; - struct dos_ttystate *port; - _go32_dpmi_seginfo old_rmhandler; - _go32_dpmi_seginfo old_pmhandler; - _go32_dpmi_seginfo new_rmhandler; - _go32_dpmi_seginfo new_pmhandler; - _go32_dpmi_registers regs; -} intrupts[NINTR]; - - -static struct dos_ttystate -{ - int base; - int irq; - int refcnt; - struct intrupt *intrupt; - int fifo; - int baudrate; - unsigned char cbuf[CBSIZE]; - unsigned int first; - unsigned int count; - int txbusy; - unsigned char old_mcr; - int ferr; - int perr; - int oflo; - int msr; -} ports[4] = { - {COM1ADDR, 4}, - {COM2ADDR, 3}, - {COM3ADDR, 4}, - {COM4ADDR, 3} -}; - -static int dos_open PARAMS ((serial_t scb, const char *name)); -static void dos_raw PARAMS ((serial_t scb)); -static int dos_readchar PARAMS ((serial_t scb, int timeout)); -static int dos_setbaudrate PARAMS ((serial_t scb, int rate)); -static int dos_write PARAMS ((serial_t scb, const char *str, int len)); -static void dos_close PARAMS ((serial_t scb)); -static serial_ttystate dos_get_tty_state PARAMS ((serial_t scb)); -static int dos_set_tty_state PARAMS ((serial_t scb, serial_ttystate state)); -static int dos_baudconv PARAMS ((int rate)); - -#define inb(p,a) inportb((p)->base + (a)) -#define outb(p,a,v) outportb((p)->base + (a), (v)) -#define disable() asm volatile ("cli"); -#define enable() asm volatile ("sti"); - - -static int -dos_getc (port) - volatile struct dos_ttystate *port; -{ - int c; - - if (port->count == 0) - return -1; - - c = port->cbuf[port->first]; - disable (); - port->first = (port->first + 1) & (CBSIZE - 1); - port->count--; - enable (); - return c; -} - - -static int -dos_putc (c, port) - int c; - struct dos_ttystate *port; -{ - if (port->count >= CBSIZE - 1) - return -1; - port->cbuf[(port->first + port->count) & (CBSIZE - 1)] = c; - port->count++; - return 0; -} - - - -static void -dos_comisr (irq) - int irq; -{ - struct dos_ttystate *port; - unsigned char iir, lsr, c; - - disable (); /* Paranoia */ - outportb (ICU_OCW2, 0x20); /* End-Of-Interrupt */ -#ifdef DOS_STATS - ++intrcnt; -#endif - - port = intrupts[irq].port; - if (!port) - { - COUNT (CNT_STRAY); - return; /* not open */ - } - - while (1) - { - iir = inb (port, com_iir) & IIR_IMASK; - switch (iir) - { - - case IIR_RLS: - lsr = inb (port, com_lsr); - goto rx; - - case IIR_RXTOUT: - case IIR_RXRDY: - lsr = 0; - - rx: - do - { - c = inb (port, com_data); - if (lsr & (LSR_BI | LSR_FE | LSR_PE | LSR_OE)) - { - if (lsr & (LSR_BI | LSR_FE)) - port->ferr++; - else if (lsr & LSR_PE) - port->perr++; - if (lsr & LSR_OE) - port->oflo++; - } - - if (dos_putc (c, port) < 0) - { - COUNT (CNT_ORUN); - } - else - { - COUNT (CNT_RX); - } - } - while ((lsr = inb (port, com_lsr)) & LSR_RXRDY); - break; - - case IIR_MLSC: - /* could be used to flowcontrol Tx */ - port->msr = inb (port, com_msr); - break; - - case IIR_TXRDY: - port->txbusy = 0; - break; - - case IIR_NOPEND: - /* no more pending interrupts, all done */ - return; - - default: - /* unexpected interrupt, ignore */ - break; - } - COUNT (iir); - } -} - -#ifdef __STDC__ -#define ISRNAME(x) dos_comisr##x -#else -#define ISRNAME(x) dos_comisr/**/x -#endif -#define ISR(x) static void ISRNAME(x)() {dos_comisr(x);} - -ISR(0) ISR(1) ISR(2) ISR(3) -ISR(4) ISR(5) ISR(6) ISR(7) - -typedef void (*isr_t)(); - -static isr_t isrs[NINTR] = { - ISRNAME(0), ISRNAME(1), ISRNAME(2), ISRNAME(3), - ISRNAME(4), ISRNAME(5), ISRNAME(6), ISRNAME(7) -}; - - - -static struct intrupt * -dos_hookirq (irq) - unsigned int irq; -{ - struct intrupt *intr; - unsigned int vec; - isr_t isr; - - if (irq >= NINTR) - return 0; - - intr = &intrupts[irq]; - if (intr->inuse) - return 0; - - vec = 0x08 + irq; - isr = isrs[irq]; - - /* setup real mode handler */ - _go32_dpmi_get_real_mode_interrupt_vector (vec, &intr->old_rmhandler); - - intr->new_rmhandler.pm_selector = _go32_my_cs(); - intr->new_rmhandler.pm_offset = (u_long)isr; - if (_go32_dpmi_allocate_real_mode_callback_iret (&intr->new_rmhandler, - &intr->regs)) - { - return 0; - } - - if (_go32_dpmi_set_real_mode_interrupt_vector (vec, &intr->new_rmhandler)) - { - return 0; - } - - /* setup protected mode handler */ - _go32_dpmi_get_protected_mode_interrupt_vector(vec, &intr->old_pmhandler); - - intr->new_pmhandler.pm_selector = _go32_my_cs(); - intr->new_pmhandler.pm_offset = (u_long)isr; - _go32_dpmi_allocate_iret_wrapper (&intr->new_pmhandler); - - if (_go32_dpmi_set_protected_mode_interrupt_vector(vec, &intr->new_pmhandler)) - { - return 0; - } - - /* setup interrupt controller mask */ - disable (); - outportb (ICU_MASK, inportb (ICU_MASK) & ~(1 << irq)); - enable (); - - intr->inuse = 1; - return intr; -} - - -static void -dos_unhookirq (intr) - struct intrupt *intr; -{ - unsigned int irq, vec; - unsigned char mask; - - irq = intr - intrupts; - vec = 0x08 + irq; - - /* restore old interrupt mask bit */ - mask = 1 << irq; - disable (); - outportb (ICU_MASK, inportb (ICU_MASK) | (mask & icu_oldmask)); - enable (); - - /* remove real mode handler */ - _go32_dpmi_set_real_mode_interrupt_vector (vec, &intr->old_rmhandler); - _go32_dpmi_free_real_mode_callback (&intr->new_rmhandler); - - /* remove protected mode handler */ - _go32_dpmi_set_protected_mode_interrupt_vector (vec, &intr->old_pmhandler); - _go32_dpmi_free_iret_wrapper (&intr->new_pmhandler); - intr->inuse = 0; -} - - - -static int -dos_open (scb, name) - serial_t scb; - const char *name; -{ - struct dos_ttystate *port; - int fd, i; - - if (strncasecmp (name, "/dev/", 5) == 0) - name += 5; - else if (strncasecmp (name, "\\dev\\", 5) == 0) - name += 5; - - if (strlen (name) != 4 || strncasecmp (name, "com", 3) != 0) - { - errno = ENOENT; - return -1; - } - - if (name[3] < '1' || name[3] > '4') - { - errno = ENOENT; - return -1; - } - - fd = name[3] - '1'; - port = &ports[fd]; - if (port->refcnt++ > 0) - { - /* Device already opened another user. Just point at it. */ - scb->fd = fd; - return 0; - } - - /* force access to ID reg */ - outb(port, com_cfcr, 0); - outb(port, com_iir, 0); - for (i = 0; i < 17; i++) { - if ((inb(port, com_iir) & 0x38) == 0) - goto ok; - (void) inb(port, com_data); /* clear recv */ - } - errno = ENODEV; - return -1; - -ok: - /* disable all interrupts in chip */ - outb(port, com_ier, 0); - - /* tentatively enable 16550 fifo, and see if it responds */ - outb(port, com_fifo, FIFO_ENABLE|FIFO_RCV_RST|FIFO_XMT_RST|FIFO_TRIGGER); - sleep(1); - port->fifo = ((inb(port, com_iir) & IIR_FIFO_MASK) == IIR_FIFO_MASK); - - /* clear pending status reports. */ - (void) inb(port, com_lsr); - (void) inb(port, com_msr); - - /* enable external interrupt gate (to avoid floating IRQ) */ - outb(port, com_mcr, MCR_IENABLE); - - /* hook up interrupt handler and initialise icu */ - port->intrupt = dos_hookirq (port->irq); - if (!port->intrupt) - { - outb(port, com_mcr, 0); - outb(port, com_fifo, 0); - errno = ENODEV; - return -1; - } - - disable (); - - /* record port */ - port->intrupt->port = port; - scb->fd = fd; - - /* clear rx buffer, tx busy flag and overflow count */ - port->first = port->count = 0; - port->txbusy = 0; - port->oflo = 0; - - /* set default baud rate and mode: 9600,8,n,1 */ - i = dos_baudconv (port->baudrate = 9600); - outb(port, com_cfcr, CFCR_DLAB); - outb(port, com_dlbl, i & 0xff); - outb(port, com_dlbh, i >> 8); - outb(port, com_cfcr, CFCR_8BITS); - - /* enable all interrupts */ - outb(port, com_ier, IER_ETXRDY | IER_ERXRDY | IER_ERLS | IER_EMSC); - - /* enable DTR & RTS */ - outb(port, com_mcr, MCR_DTR | MCR_RTS | MCR_IENABLE); - - enable (); - - return 0; -} - - -static void -dos_close (scb) - serial_t scb; -{ - struct dos_ttystate *port; - struct intrupt *intrupt; - - if (!scb) - return; - - port = &ports[scb->fd]; - - if (port->refcnt-- > 1) - return; - - if (!(intrupt = port->intrupt)) - return; - - /* disable interrupts, fifo, flow control */ - disable (); - port->intrupt = 0; - intrupt->port = 0; - outb(port, com_fifo, 0); - outb(port, com_ier, 0); - enable (); - - /* unhook handler, and disable interrupt gate */ - dos_unhookirq (intrupt); - outb(port, com_mcr, 0); - - /* Check for overflow errors */ - if (port->oflo) - { - fprintf_unfiltered (gdb_stderr, - "Serial input overruns occurred.\n"); - fprintf_unfiltered (gdb_stderr, "This system %s handle %d baud.\n", - port->fifo ? "cannot" : "needs a 16550 to", - port->baudrate); - } -} - - - -static int -dos_noop (scb) - serial_t scb; -{ - return 0; -} - -static void -dos_raw (scb) - serial_t scb; -{ - /* Always in raw mode */ -} - -static int -dos_readchar (scb, timeout) - serial_t scb; - int timeout; -{ - struct dos_ttystate *port = &ports[scb->fd]; - long then; - int c; - - then = rawclock() + (timeout * RAWHZ); - while ((c = dos_getc (port)) < 0) - { - if (timeout >= 0 && (rawclock () - then) >= 0) - return SERIAL_TIMEOUT; - notice_quit (); - } - - return c; -} - - -static serial_ttystate -dos_get_tty_state (scb) - serial_t scb; -{ - struct dos_ttystate *port = &ports[scb->fd]; - struct dos_ttystate *state; - - state = (struct dos_ttystate *) xmalloc (sizeof *state); - *state = *port; - return (serial_ttystate) state; -} - -static int -dos_set_tty_state (scb, ttystate) - serial_t scb; - serial_ttystate ttystate; -{ - struct dos_ttystate *state; - - state = (struct dos_ttystate *) ttystate; - dos_setbaudrate (scb, state->baudrate); - return 0; -} - -static int -dos_noflush_set_tty_state (scb, new_ttystate, old_ttystate) - serial_t scb; - serial_ttystate new_ttystate; - serial_ttystate old_ttystate; -{ - struct dos_ttystate *state; - - state = (struct dos_ttystate *) new_ttystate; - dos_setbaudrate (scb, state->baudrate); - return 0; -} - -static int -dos_flush_input (scb) - serial_t scb; -{ - struct dos_ttystate *port = &ports[scb->fd]; - disable(); - port->first = port->count = 0; - if (port->fifo) - outb(port, com_fifo, FIFO_ENABLE|FIFO_RCV_RST|FIFO_TRIGGER); - enable(); -} - -static void -dos_print_tty_state (scb, ttystate) - serial_t scb; - serial_ttystate ttystate; -{ - /* Nothing to print */ - return; -} - -static int -dos_baudconv (rate) - int rate; -{ - long x, err; - - if (rate <= 0) - return -1; - -#define divrnd(n, q) (((n) * 2 / (q) + 1) / 2) /* divide and round off */ - x = divrnd(COMTICK, rate); - if (x <= 0) - return -1; - - err = divrnd(1000 * COMTICK, x * rate) - 1000; - if (err < 0) - err = -err; - if (err > SPEED_TOLERANCE) - return -1; -#undef divrnd - return x; -} - - -static int -dos_setbaudrate (scb, rate) - serial_t scb; - int rate; -{ - struct dos_ttystate *port = &ports[scb->fd]; - - if (port->baudrate != rate) - { - int x; - unsigned char cfcr; - - x = dos_baudconv (rate); - if (x <= 0) - { - fprintf_unfiltered (gdb_stderr, "%d: impossible baudrate\n", rate); - errno = EINVAL; - return -1; - } - - disable (); - cfcr = inb (port, com_cfcr); - - outb(port, com_cfcr, CFCR_DLAB); - outb(port, com_dlbl, x & 0xff); - outb(port, com_dlbh, x >> 8); - outb(port, com_cfcr, cfcr); - port->baudrate = rate; - enable (); - } - - return 0; -} - -static int -dos_setstopbits (scb, num) - serial_t scb; - int num; -{ - struct dos_ttystate *port = &ports[scb->fd]; - unsigned char cfcr; - - disable (); - cfcr = inb (port, com_cfcr); - - switch (num) - { - case SERIAL_1_STOPBITS: - outb (port, com_cfcr, cfcr & ~CFCR_STOPB); - break; - case SERIAL_1_AND_A_HALF_STOPBITS: - case SERIAL_2_STOPBITS: - outb (port, com_cfcr, cfcr | CFCR_STOPB); - break; - default: - enable (); - return 1; - } - enable (); - - return 0; -} - -static int -dos_write (scb, str, len) - serial_t scb; - const char *str; - int len; -{ - volatile struct dos_ttystate *port = &ports[scb->fd]; - int fifosize = port->fifo ? 16 : 1; - long then; - int cnt; - - while (len > 0) - { - /* send the data, fifosize bytes at a time */ - cnt = fifosize > len ? len : fifosize; - port->txbusy = 1; - outportsb (port->base + com_data, str, cnt); - str += cnt; - len -= cnt; -#ifdef DOS_STATS - cnts[CNT_TX] += cnt; -#endif - /* wait for transmission to complete (max 1 sec) */ - then = rawclock() + RAWHZ; - while (port->txbusy) - { - if ((rawclock () - then) >= 0) - { - errno = EIO; - return SERIAL_ERROR; - } - } - } - return 0; -} - - -static int -dos_sendbreak (scb) - serial_t scb; -{ - volatile struct dos_ttystate *port = &ports[scb->fd]; - unsigned char cfcr; - long then; - - cfcr = inb(port, com_cfcr); - outb(port, com_cfcr, cfcr | CFCR_SBREAK); - - /* 0.25 sec delay */ - then = rawclock () + RAWHZ / 4; - while ((rawclock () - then) < 0) - continue; - - outb(port, com_cfcr, cfcr); - return 0; -} - - -static struct serial_ops dos_ops = -{ - "hardwire", - 0, - dos_open, - dos_close, - dos_readchar, - dos_write, - dos_noop, /* flush output */ - dos_flush_input, - dos_sendbreak, - dos_raw, - dos_get_tty_state, - dos_set_tty_state, - dos_print_tty_state, - dos_noflush_set_tty_state, - dos_setbaudrate, - dos_setstopbits, - dos_noop, /* wait for output to drain */ -}; - - -static void -dos_info (arg, from_tty) - char *arg; - int from_tty; -{ - struct dos_ttystate *port; - int i; - - for (port = ports; port < &ports[4]; port++) - { - if (port->baudrate == 0) - continue; - printf_filtered ("Port:\tCOM%d (%sactive)\n", port - ports + 1, - port->intrupt ? "" : "not "); - printf_filtered ("Addr:\t0x%03x (irq %d)\n", port->base, port->irq); - printf_filtered ("16550:\t%s\n", port->fifo ? "yes" : "no"); - printf_filtered ("Speed:\t%d baud\n", port->baudrate); - printf_filtered ("Errs:\tframing %d parity %d overflow %d\n\n", - port->ferr, port->perr, port->oflo); - } - -#ifdef DOS_STATS - printf_filtered ("\nTotal interrupts: %d\n", intrcnt); - for (i = 0; i < NCNT; i++) - if (cnts[i]) - printf_filtered ("%s:\t%d\n", cntnames[i], cnts[i]); -#endif -} - - -void -_initialize_ser_dos () -{ - struct cmd_list_element *c; - - serial_add_interface (&dos_ops); - - /* Save original interrupt mask register. */ - icu_oldmask = inportb (ICU_MASK); - - /* Mark fixed motherboard irqs as inuse. */ - intrupts[0].inuse = /* timer tick */ - intrupts[1].inuse = /* keyboard */ - intrupts[2].inuse = 1; /* slave icu */ - - add_show_from_set ( - add_set_cmd ("com1base", class_obscure, var_zinteger, - (char *) &ports[0].base, - "Set COM1 base i/o port address.", - &setlist), - &showlist); - - add_show_from_set ( - add_set_cmd ("com1irq", class_obscure, var_zinteger, - (char *) &ports[0].irq, - "Set COM1 interrupt request.", - &setlist), - &showlist); - - add_show_from_set ( - add_set_cmd ("com2base", class_obscure, var_zinteger, - (char *) &ports[1].base, - "Set COM2 base i/o port address.", - &setlist), - &showlist); - - add_show_from_set ( - add_set_cmd ("com2irq", class_obscure, var_zinteger, - (char *) &ports[1].irq, - "Set COM2 interrupt request.", - &setlist), - &showlist); - - add_show_from_set ( - add_set_cmd ("com3base", class_obscure, var_zinteger, - (char *) &ports[2].base, - "Set COM3 base i/o port address.", - &setlist), - &showlist); - - add_show_from_set ( - add_set_cmd ("com3irq", class_obscure, var_zinteger, - (char *) &ports[2].irq, - "Set COM3 interrupt request.", - &setlist), - &showlist); - - add_show_from_set ( - add_set_cmd ("com4base", class_obscure, var_zinteger, - (char *) &ports[3].base, - "Set COM4 base i/o port address.", - &setlist), - &showlist); - - add_show_from_set ( - add_set_cmd ("com4irq", class_obscure, var_zinteger, - (char *) &ports[3].irq, - "Set COM4 interrupt request.", - &setlist), - &showlist); - - add_info ("serial", dos_info, - "Print DOS serial port status."); -} |