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sio.c (42262) sio.c (42265)
1/*-
2 * Copyright (c) 1991 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * from: @(#)com.c 7.5 (Berkeley) 5/16/91
1/*-
2 * Copyright (c) 1991 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * from: @(#)com.c 7.5 (Berkeley) 5/16/91
34 * $Id: sio.c,v 1.71 1998/12/30 08:09:11 kato Exp $
34 * $Id: sio.c,v 1.72 1999/01/03 05:03:47 kato Exp $
35 */
36
37#include "opt_comconsole.h"
38#include "opt_compat.h"
39#include "opt_ddb.h"
40#include "opt_devfs.h"
41#include "opt_sio.h"
42#include "sio.h"

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166#include <i386/isa/isa_device.h>
167#include <i386/isa/sioreg.h>
168#include <i386/isa/intr_machdep.h>
169
170#ifdef COM_ESP
171#include <i386/isa/ic/esp.h>
172#endif
173#include <i386/isa/ic/ns16550.h>
35 */
36
37#include "opt_comconsole.h"
38#include "opt_compat.h"
39#include "opt_ddb.h"
40#include "opt_devfs.h"
41#include "opt_sio.h"
42#include "sio.h"

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166#include <i386/isa/isa_device.h>
167#include <i386/isa/sioreg.h>
168#include <i386/isa/intr_machdep.h>
169
170#ifdef COM_ESP
171#include <i386/isa/ic/esp.h>
172#endif
173#include <i386/isa/ic/ns16550.h>
174#ifdef PC98
175#include <i386/isa/ic/rsa.h>
176#endif
174
175#include "card.h"
176#if NCARD > 0
177#include <pccard/cardinfo.h>
178#include <pccard/slot.h>
179#endif
180
181#if NPNP > 0

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224#define COM_NOFIFO(dev) ((dev)->id_flags & 0x02)
225#define COM_ST16650A(dev) ((dev)->id_flags & 0x20000)
226#define COM_C_NOPROBE (0x40000)
227#define COM_NOPROBE(dev) ((dev)->id_flags & COM_C_NOPROBE)
228#define COM_C_IIR_TXRDYBUG (0x80000)
229#define COM_IIR_TXRDYBUG(dev) ((dev)->id_flags & COM_C_IIR_TXRDYBUG)
230#define COM_FIFOSIZE(dev) (((dev)->id_flags & 0xff000000) >> 24)
231
177
178#include "card.h"
179#if NCARD > 0
180#include <pccard/cardinfo.h>
181#include <pccard/slot.h>
182#endif
183
184#if NPNP > 0

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227#define COM_NOFIFO(dev) ((dev)->id_flags & 0x02)
228#define COM_ST16650A(dev) ((dev)->id_flags & 0x20000)
229#define COM_C_NOPROBE (0x40000)
230#define COM_NOPROBE(dev) ((dev)->id_flags & COM_C_NOPROBE)
231#define COM_C_IIR_TXRDYBUG (0x80000)
232#define COM_IIR_TXRDYBUG(dev) ((dev)->id_flags & COM_C_IIR_TXRDYBUG)
233#define COM_FIFOSIZE(dev) (((dev)->id_flags & 0xff000000) >> 24)
234
232#ifndef PC98
235#ifdef PC98
236#define com_emr com_msr /* Extension mode register for RSB-2000/3000 */
237#else
233#define com_scr 7 /* scratch register for 16450-16550 (R/W) */
238#define com_scr 7 /* scratch register for 16450-16550 (R/W) */
234#endif /* !PC98 */
239#endif
235
236/*
237 * Input buffer watermarks.
238 * The external device is asked to stop sending when the buffer exactly reaches
239 * high water, or when the high level requests it.
240 * The high level is notified immediately (rather than at a later clock tick)
241 * when this watermark is reached.
242 * The buffer size is chosen so the watermark should almost never be reached.

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763 /* COM_IF_RSA98III */
764 { " (RSA-98III)", -1, -1, 0, 16, comspeedtab_rsa },
765 /* COM_IF_ESP98 */
766 { " (ESP98)", -1, -1, 1, 1, comspeedtab_mc16550 },
767};
768#endif /* PC98 */
769
770#ifdef COM_ESP
240
241/*
242 * Input buffer watermarks.
243 * The external device is asked to stop sending when the buffer exactly reaches
244 * high water, or when the high level requests it.
245 * The high level is notified immediately (rather than at a later clock tick)
246 * when this watermark is reached.
247 * The buffer size is chosen so the watermark should almost never be reached.

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768 /* COM_IF_RSA98III */
769 { " (RSA-98III)", -1, -1, 0, 16, comspeedtab_rsa },
770 /* COM_IF_ESP98 */
771 { " (ESP98)", -1, -1, 1, 1, comspeedtab_mc16550 },
772};
773#endif /* PC98 */
774
775#ifdef COM_ESP
771/* XXX configure this properly. */
772#ifdef PC98
776#ifdef PC98
777
778/* XXX configure this properly. */
773static Port_t likely_com_ports[] = { 0, 0xb0, 0xb1, 0 };
774static Port_t likely_esp_ports[] = { 0xc0d0, 0 };
779static Port_t likely_com_ports[] = { 0, 0xb0, 0xb1, 0 };
780static Port_t likely_esp_ports[] = { 0xc0d0, 0 };
775#else
781
782#define ESP98_CMD1 (ESP_CMD1 * 0x100)
783#define ESP98_CMD2 (ESP_CMD2 * 0x100)
784#define ESP98_STATUS1 (ESP_STATUS1 * 0x100)
785#define ESP98_STATUS2 (ESP_STATUS2 * 0x100)
786
787#else /* PC98 */
788
789/* XXX configure this properly. */
776static Port_t likely_com_ports[] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, };
777static Port_t likely_esp_ports[] = { 0x140, 0x180, 0x280, 0 };
790static Port_t likely_com_ports[] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, };
791static Port_t likely_esp_ports[] = { 0x140, 0x180, 0x280, 0 };
792
778#endif /* PC98 */
779#endif
780
781/*
782 * handle sysctl read/write requests for console speed
783 *
784 * In addition to setting comdefaultrate for I/O through /dev/console,
785 * also set the initial and lock values for the /dev/ttyXX device

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1419 }
1420
1421 /*
1422 * We've got something that claims to be a Hayes ESP card.
1423 * Let's hope so.
1424 */
1425
1426 /* Get the dip-switch configuration */
793#endif /* PC98 */
794#endif
795
796/*
797 * handle sysctl read/write requests for console speed
798 *
799 * In addition to setting comdefaultrate for I/O through /dev/console,
800 * also set the initial and lock values for the /dev/ttyXX device

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1434 }
1435
1436 /*
1437 * We've got something that claims to be a Hayes ESP card.
1438 * Let's hope so.
1439 */
1440
1441 /* Get the dip-switch configuration */
1442#ifdef PC98
1443 outb(esp_port + ESP98_CMD1, ESP_GETDIPS);
1444 dips = inb(esp_port + ESP98_STATUS1);
1445#else
1427 outb(esp_port + ESP_CMD1, ESP_GETDIPS);
1428 dips = inb(esp_port + ESP_STATUS1);
1446 outb(esp_port + ESP_CMD1, ESP_GETDIPS);
1447 dips = inb(esp_port + ESP_STATUS1);
1448#endif
1429
1430 /*
1431 * Bits 0,1 of dips say which COM port we are.
1432 */
1433#ifdef PC98
1434 if ((com->iobase & 0xff) == likely_com_ports[dips & 0x03])
1435#else
1436 if (com->iobase == likely_com_ports[dips & 0x03])
1437#endif
1438 printf(" : ESP");
1439 else {
1440 printf(" esp_port has com %d\n", dips & 0x03);
1441 return (0);
1442 }
1443
1444 /*
1445 * Check for ESP version 2.0 or later: bits 4,5,6 = 010.
1446 */
1449
1450 /*
1451 * Bits 0,1 of dips say which COM port we are.
1452 */
1453#ifdef PC98
1454 if ((com->iobase & 0xff) == likely_com_ports[dips & 0x03])
1455#else
1456 if (com->iobase == likely_com_ports[dips & 0x03])
1457#endif
1458 printf(" : ESP");
1459 else {
1460 printf(" esp_port has com %d\n", dips & 0x03);
1461 return (0);
1462 }
1463
1464 /*
1465 * Check for ESP version 2.0 or later: bits 4,5,6 = 010.
1466 */
1467#ifdef PC98
1468 outb(esp_port + ESP98_CMD1, ESP_GETTEST);
1469 val = inb(esp_port + ESP98_STATUS1); /* clear reg 1 */
1470 val = inb(esp_port + ESP98_STATUS2);
1471#else
1447 outb(esp_port + ESP_CMD1, ESP_GETTEST);
1448 val = inb(esp_port + ESP_STATUS1); /* clear reg 1 */
1449 val = inb(esp_port + ESP_STATUS2);
1472 outb(esp_port + ESP_CMD1, ESP_GETTEST);
1473 val = inb(esp_port + ESP_STATUS1); /* clear reg 1 */
1474 val = inb(esp_port + ESP_STATUS2);
1475#endif
1450 if ((val & 0x70) < 0x20) {
1451 printf("-old (%o)", val & 0x70);
1452 return (0);
1453 }
1454
1455 /*
1456 * Check for ability to emulate 16550: bit 7 == 1
1457 */

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1710 if (com->esp) {
1711 /*
1712 * Set 16550 compatibility mode.
1713 * We don't use the ESP_MODE_SCALE bit to increase the
1714 * fifo trigger levels because we can't handle large
1715 * bursts of input.
1716 * XXX flow control should be set in comparam(), not here.
1717 */
1476 if ((val & 0x70) < 0x20) {
1477 printf("-old (%o)", val & 0x70);
1478 return (0);
1479 }
1480
1481 /*
1482 * Check for ability to emulate 16550: bit 7 == 1
1483 */

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1736 if (com->esp) {
1737 /*
1738 * Set 16550 compatibility mode.
1739 * We don't use the ESP_MODE_SCALE bit to increase the
1740 * fifo trigger levels because we can't handle large
1741 * bursts of input.
1742 * XXX flow control should be set in comparam(), not here.
1743 */
1744#ifdef PC98
1745 outb(com->esp_port + ESP98_CMD1, ESP_SETMODE);
1746 outb(com->esp_port + ESP98_CMD2, ESP_MODE_RTS | ESP_MODE_FIFO);
1747#else
1718 outb(com->esp_port + ESP_CMD1, ESP_SETMODE);
1719 outb(com->esp_port + ESP_CMD2, ESP_MODE_RTS | ESP_MODE_FIFO);
1748 outb(com->esp_port + ESP_CMD1, ESP_SETMODE);
1749 outb(com->esp_port + ESP_CMD2, ESP_MODE_RTS | ESP_MODE_FIFO);
1750#endif
1720
1721 /* Set RTS/CTS flow control. */
1751
1752 /* Set RTS/CTS flow control. */
1753#ifdef PC98
1754 outb(com->esp_port + ESP98_CMD1, ESP_SETFLOWTYPE);
1755 outb(com->esp_port + ESP98_CMD2, ESP_FLOW_RTS);
1756 outb(com->esp_port + ESP98_CMD2, ESP_FLOW_CTS);
1757#else
1722 outb(com->esp_port + ESP_CMD1, ESP_SETFLOWTYPE);
1723 outb(com->esp_port + ESP_CMD2, ESP_FLOW_RTS);
1724 outb(com->esp_port + ESP_CMD2, ESP_FLOW_CTS);
1758 outb(com->esp_port + ESP_CMD1, ESP_SETFLOWTYPE);
1759 outb(com->esp_port + ESP_CMD2, ESP_FLOW_RTS);
1760 outb(com->esp_port + ESP_CMD2, ESP_FLOW_CTS);
1761#endif
1725
1726 /* Set flow-control levels. */
1762
1763 /* Set flow-control levels. */
1764#ifdef PC98
1765 outb(com->esp_port + ESP98_CMD1, ESP_SETRXFLOW);
1766 outb(com->esp_port + ESP98_CMD2, HIBYTE(768));
1767 outb(com->esp_port + ESP98_CMD2, LOBYTE(768));
1768 outb(com->esp_port + ESP98_CMD2, HIBYTE(512));
1769 outb(com->esp_port + ESP98_CMD2, LOBYTE(512));
1770#else
1727 outb(com->esp_port + ESP_CMD1, ESP_SETRXFLOW);
1728 outb(com->esp_port + ESP_CMD2, HIBYTE(768));
1729 outb(com->esp_port + ESP_CMD2, LOBYTE(768));
1730 outb(com->esp_port + ESP_CMD2, HIBYTE(512));
1731 outb(com->esp_port + ESP_CMD2, LOBYTE(512));
1771 outb(com->esp_port + ESP_CMD1, ESP_SETRXFLOW);
1772 outb(com->esp_port + ESP_CMD2, HIBYTE(768));
1773 outb(com->esp_port + ESP_CMD2, LOBYTE(768));
1774 outb(com->esp_port + ESP_CMD2, HIBYTE(512));
1775 outb(com->esp_port + ESP_CMD2, LOBYTE(512));
1776#endif
1777
1732#ifdef PC98
1733 /* Set UART clock prescaler. */
1778#ifdef PC98
1779 /* Set UART clock prescaler. */
1734 outb(com->esp_port + ESP_CMD1, ESP_SETCLOCK);
1735 outb(com->esp_port + ESP_CMD2, 2); /* 4 times */
1780 outb(com->esp_port + ESP98_CMD1, ESP_SETCLOCK);
1781 outb(com->esp_port + ESP98_CMD2, 2); /* 4 times */
1736#endif
1737 }
1738#endif /* COM_ESP */
1739#ifdef PC98
1740 printf("%s", if_16550a_type[com->pc98_if_type & 0x0f].name);
1741 outb(iobase + (com_fifo << port_shift), 0);
1742#else
1743 outb(iobase + com_fifo, 0);

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1783 }
1784#endif /* COM_ESP */
1785#ifdef PC98
1786 printf("%s", if_16550a_type[com->pc98_if_type & 0x0f].name);
1787 outb(iobase + (com_fifo << port_shift), 0);
1788#else
1789 outb(iobase + com_fifo, 0);

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