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Break out the bus front ends into their own files. Rewrite

Browse Source 
sio_pccard_detach to use new siodetach.  Add an extra arg to sioprobe
to tell driver to probe/not probe the device for IRQs.

This incorporates most of Bruce's review material.  I'm at a good
checkpoint, but there will be more to come based on bde's further
reviews.

Reviewed by: bde
This commit is contained in:
Warner Losh 2001-10-23 15:17:33 +00:00
parent 7e489a2fdd
commit 2ce87d3448
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=85365
10 changed files with 577 additions and 419 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/conf/files.alpha
View File

@ -195,6 +195,10 @@ dev/kbd/kbd.c optional kbd
dev/kbd/kbd.c optional sc
dev/kbd/kbd.c optional ukbd
dev/sio/sio.c optional sio
dev/sio/sio_isa.c optional sio isa
dev/sio/sio_pccard.c optional sio card
dev/sio/sio_pccard.c optional sio pccard
dev/sio/sio_pci.c optional sio pci
dev/syscons/schistory.c count sc
dev/syscons/scmouse.c optional sc
dev/syscons/scterm.c optional sc

4
sys/conf/files.i386
View File

@ -112,6 +112,10 @@ dev/kbd/kbd.c optional ukbd
dev/kbd/kbd.c optional vt
dev/lnc/if_lnc_isa.c optional lnc isa
dev/sio/sio.c optional sio
dev/sio/sio_isa.c optional sio isa
dev/sio/sio_pccard.c optional sio card
dev/sio/sio_pccard.c optional sio pccard
dev/sio/sio_pci.c optional sio pci
dev/sr/if_sr_isa.c optional sr isa
dev/syscons/apm/apm_saver.c optional apm_saver apm
dev/syscons/schistory.c count sc

4
sys/conf/files.ia64
View File

@ -76,6 +76,10 @@ dev/kbd/kbd.c optional kbd
dev/kbd/kbd.c optional sc
dev/kbd/kbd.c optional ukbd
dev/sio/sio.c optional sio
dev/sio/sio_isa.c optional sio isa
dev/sio/sio_pccard.c optional sio card
dev/sio/sio_pccard.c optional sio pccard
dev/sio/sio_pci.c optional sio pci
dev/syscons/schistory.c count sc
dev/syscons/scmouse.c optional sc
dev/syscons/scterm.c optional sc

432
sys/dev/sio/sio.c
View File

@ -39,8 +39,6 @@
#include "opt_compat.h"
#include "opt_ddb.h"
#include "opt_sio.h"
#include "card.h"
#include "pci.h"
/*
* Serial driver, based on 386BSD-0.1 com driver.
@ -54,7 +52,6 @@
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/dkstat.h>
#include <sys/fcntl.h>
@ -75,17 +72,13 @@
#include <sys/timetc.h>
#include <sys/timepps.h>
#include <isa/isareg.h>
#include <isa/isavar.h>
#if NPCI > 0
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#endif
#include <machine/clock.h>
#include <machine/resource.h>
#include <dev/sio/sioreg.h>
#include <dev/sio/siovar.h>
#include <isa/isavar.h>
#ifdef COM_ESP
#include <dev/ic/esp.h>
@ -118,8 +111,6 @@
#define COM_LOSESOUTINTS(flags) ((flags) & 0x08)
#define COM_NOFIFO(flags) ((flags) & 0x02)
#define COM_ST16650A(flags) ((flags) & 0x20000)
#define COM_C_NOPROBE (0x40000)
#define COM_NOPROBE(flags) ((flags) & COM_C_NOPROBE)
#define COM_C_IIR_TXRDYBUG (0x80000)
#define COM_IIR_TXRDYBUG(flags) ((flags) & COM_C_IIR_TXRDYBUG)
#define COM_FIFOSIZE(flags) (((flags) & 0xff000000) >> 24)
@ -166,121 +157,11 @@ static char const * const error_desc[] = {
"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 flags; /* Copy isa device flags */
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 *ibufold; /* old input buffer, to be freed */
u_char *ihighwater; /* threshold in input buffer */
u_char *iptr; /* next free spot in input buffer */
int ibufsize; /* size of ibuf (not include error bytes) */
int ierroff; /* offset of error bytes in ibuf */
struct lbq obufq; /* head of queue of output buffers */
struct lbq obufs[2]; /* output buffers */
bus_space_tag_t bst;
bus_space_handle_t bsh;
Port_t data_port; /* i/o ports */
#ifdef COM_ESP
Port_t esp_port;
#endif
Port_t int_id_port;
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;
struct pps_state pps;
u_long bytes_in; /* statistics */
u_long bytes_out;
u_int delta_error_counts[CE_NTYPES];
u_long error_counts[CE_NTYPES];
struct resource *irqres;
struct resource *ioportres;
void *cookie;
dev_t devs[6];
/*
* Data area for output buffers. Someday we should build the output
* buffer queue without copying data.
*/
u_char obuf1[256];
u_char obuf2[256];
};
#ifdef COM_ESP
static int espattach __P((struct com_s *com, Port_t esp_port));
#endif
static int sioattach __P((device_t dev, int rid));
static int sio_isa_attach __P((device_t dev));
static timeout_t siobusycheck;
static timeout_t siodtrwakeup;
@ -291,8 +172,6 @@ static void siointr __P((void *arg));
static int commctl __P((struct com_s *com, int bits, int how));
static int comparam __P((struct tty *tp, struct termios *t));
static void siopoll __P((void *));
static int sioprobe __P((device_t dev, int xrid));
static int sio_isa_probe __P((device_t dev));
static void siosettimeout __P((void));
static int siosetwater __P((struct com_s *com, speed_t speed));
static void comstart __P((struct tty *tp));
@ -301,74 +180,15 @@ static timeout_t comwakeup;
static void disc_optim __P((struct tty *tp, struct termios *t,
struct com_s *com));
#if NCARD > 0
static int sio_pccard_attach __P((device_t dev));
static int sio_pccard_detach __P((device_t dev));
static int sio_pccard_probe __P((device_t dev));
#endif /* NCARD > 0 */
#if NPCI > 0
static int sio_pci_attach __P((device_t dev));
static void sio_pci_kludge_unit __P((device_t dev));
static int sio_pci_probe __P((device_t dev));
#endif /* NPCI > 0 */
static char driver_name[] = "sio";
char sio_driver_name[] = "sio";
static struct mtx sio_lock;
static int sio_inited;
/* table and macro for fast conversion from a unit number to its com struct */
static devclass_t sio_devclass;
devclass_t sio_devclass;
#define com_addr(unit) ((struct com_s *) \
devclass_get_softc(sio_devclass, unit))
static device_method_t sio_isa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sio_isa_probe),
DEVMETHOD(device_attach, sio_isa_attach),
{ 0, 0 }
};
static driver_t sio_isa_driver = {
driver_name,
sio_isa_methods,
sizeof(struct com_s),
};
#if NCARD > 0
static device_method_t sio_pccard_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sio_pccard_probe),
DEVMETHOD(device_attach, sio_pccard_attach),
DEVMETHOD(device_detach, sio_pccard_detach),
{ 0, 0 }
};
static driver_t sio_pccard_driver = {
driver_name,
sio_pccard_methods,
sizeof(struct com_s),
};
#endif /* NCARD > 0 */
#if NPCI > 0
static device_method_t sio_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sio_pci_probe),
DEVMETHOD(device_attach, sio_pci_attach),
{ 0, 0 }
};
static driver_t sio_pci_driver = {
driver_name,
sio_pci_methods,
sizeof(struct com_s),
};
#endif /* NPCI > 0 */
static d_open_t sioopen;
static d_close_t sioclose;
static d_read_t sioread;
@ -385,7 +205,7 @@ static struct cdevsw sio_cdevsw = {
/* poll */ ttypoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ driver_name,
/* name */ sio_driver_name,
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
@ -502,39 +322,8 @@ sysctl_machdep_comdefaultrate(SYSCTL_HANDLER_ARGS)
SYSCTL_PROC(_machdep, OID_AUTO, conspeed, CTLTYPE_INT | CTLFLAG_RW,
0, 0, sysctl_machdep_comdefaultrate, "I", "");
#define SET_FLAG(dev, bit) device_set_flags(dev, device_get_flags(dev) | (bit))
#define CLR_FLAG(dev, bit) device_set_flags(dev, device_get_flags(dev) & ~(bit))
#if NCARD > 0
static int
sio_pccard_probe(dev)
device_t dev;
{
/* Do not probe IRQ - pccard doesn't turn on the interrupt line */
/* until bus_setup_intr */
SET_FLAG(dev, COM_C_NOPROBE);
return (sioprobe(dev, 0));
}
static int
sio_pccard_attach(dev)
device_t dev;
{
return (sioattach(dev, 0));
}
/*
* sio_detach - 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 int
sio_pccard_detach(dev)
int
siodetach(dev)
device_t dev;
{
struct com_s *com;
@ -565,190 +354,14 @@ sio_pccard_detach(dev)
if (com->ibuf != NULL)
free(com->ibuf, M_DEVBUF);
}
device_printf(dev, "unloaded\n");
return (0);
}
#endif /* NCARD > 0 */
#if NPCI > 0
struct pci_ids {
u_int32_t type;
const char *desc;
int rid;
};
static struct pci_ids pci_ids[] = {
{ 0x100812b9, "3COM PCI FaxModem", 0x10 },
{ 0x2000131f, "CyberSerial (1-port) 16550", 0x10 },
{ 0x01101407, "Koutech IOFLEX-2S PCI Dual Port Serial", 0x10 },
{ 0x01111407, "Koutech IOFLEX-2S PCI Dual Port Serial", 0x10 },
{ 0x048011c1, "Lucent kermit based PCI Modem", 0x14 },
{ 0x95211415, "Oxford Semiconductor PCI Dual Port Serial", 0x10 },
{ 0x0000151f, "SmartLink 5634PCV SurfRider", 0x10 },
/* { 0xXXXXXXXX, "Xircom Cardbus modem", 0x10 }, */
{ 0x00000000, NULL, 0 }
};
static int
sio_pci_attach(dev)
device_t dev;
{
u_int32_t type;
struct pci_ids *id;
type = pci_get_devid(dev);
id = pci_ids;
while (id->type && id->type != type)
id++;
if (id->desc == NULL)
return (ENXIO);
sio_pci_kludge_unit(dev);
return (sioattach(dev, id->rid));
}
/*
* Don't cut and paste this to other drivers. It is a horrible kludge
* which will fail to work and also be unnecessary in future versions.
*/
static void
sio_pci_kludge_unit(dev)
device_t dev;
{
devclass_t dc;
int err;
int start;
int unit;
unit = 0;
start = 0;
while (resource_int_value("sio", unit, "port", &start) == 0 &&
start > 0)
unit++;
if (device_get_unit(dev) < unit) {
dc = device_get_devclass(dev);
while (devclass_get_device(dc, unit))
unit++;
device_printf(dev, "moving to sio%d\n", unit);
err = device_set_unit(dev, unit); /* EVIL DO NOT COPY */
if (err)
device_printf(dev, "error moving device %d\n", err);
}
}
static int
sio_pci_probe(dev)
device_t dev;
{
u_int32_t type;
struct pci_ids *id;
type = pci_get_devid(dev);
id = pci_ids;
while (id->type && id->type != type)
id++;
if (id->desc == NULL)
return (ENXIO);
device_set_desc(dev, id->desc);
return (sioprobe(dev, id->rid));
}
#endif /* NPCI > 0 */
static struct isa_pnp_id sio_ids[] = {
{0x0005d041, "Standard PC COM port"}, /* PNP0500 */
{0x0105d041, "16550A-compatible COM port"}, /* PNP0501 */
{0x0205d041, "Multiport serial device (non-intelligent 16550)"}, /* PNP0502 */
{0x1005d041, "Generic IRDA-compatible device"}, /* PNP0510 */
{0x1105d041, "Generic IRDA-compatible device"}, /* PNP0511 */
/* Devices that do not have a compatid */
{0x12206804, NULL}, /* ACH2012 - 5634BTS 56K Video Ready Modem */
{0x7602a904, NULL}, /* AEI0276 - 56K v.90 Fax Modem (LKT) */
{0x00007905, NULL}, /* AKY0000 - 56K Plug&Play Modem */
{0x01405407, NULL}, /* AZT4001 - AZT3000 PnP SOUND DEVICE, MODEM */
{0x56039008, NULL}, /* BDP0356 - Best Data 56x2 */
{0x56159008, NULL}, /* BDP1556 - B.D. Smart One 56SPS,Voice Modem*/
{0x36339008, NULL}, /* BDP3336 - Best Data Prods. 336F */
{0x0014490a, NULL}, /* BRI1400 - Boca 33.6 PnP */
{0x0015490a, NULL}, /* BRI1500 - Internal Fax Data */
{0x0034490a, NULL}, /* BRI3400 - Internal ACF Modem */
{0x0094490a, NULL}, /* BRI9400 - Boca K56Flex PnP */
{0x00b4490a, NULL}, /* BRIB400 - Boca 56k PnP */
{0x0030320d, NULL}, /* CIR3000 - Cirrus Logic V43 */
{0x0100440e, NULL}, /* CRD0001 - Cardinal MVP288IV ? */
{0x36033610, NULL}, /* DAV0336 - DAVICOM 336PNP MODEM */
{0x0000aa1a, NULL}, /* FUJ0000 - FUJITSU Modem 33600 PNP/I2 */
{0x1200c31e, NULL}, /* GVC0012 - VF1128HV-R9 (win modem?) */
{0x0303c31e, NULL}, /* GVC0303 - MaxTech 33.6 PnP D/F/V */
{0x0505c31e, NULL}, /* GVC0505 - GVC 56k Faxmodem */
{0x0116c31e, NULL}, /* GVC1601 - Rockwell V.34 Plug & Play Modem */
{0x0050c31e, NULL}, /* GVC5000 - some GVC modem */
{0x3800f91e, NULL}, /* GWY0038 - Telepath with v.90 */
{0x9062f91e, NULL}, /* GWY6290 - Telepath with x2 Technology */
{0x8100e425, NULL}, /* IOD0081 - I-O DATA DEVICE,INC. IFML-560 */
{0x21002534, NULL}, /* MAE0021 - Jetstream Int V.90 56k Voice Series 2*/
{0x0000f435, NULL}, /* MOT0000 - Motorola ModemSURFR 33.6 Intern */
{0x5015f435, NULL}, /* MOT1550 - Motorola ModemSURFR 56K Modem */
{0xf015f435, NULL}, /* MOT15F0 - Motorola VoiceSURFR 56K Modem */
{0x6045f435, NULL}, /* MOT4560 - Motorola ? */
{0x61e7a338, NULL}, /* NECE761 - 33.6Modem */
{0x08804f3f, NULL}, /* OZO8008 - Zoom (33.6k Modem) */
{0x0f804f3f, NULL}, /* OZO800f - Zoom 2812 (56k Modem) */
{0x39804f3f, NULL}, /* OZO8039 - Zoom 56k flex */
{0x00914f3f, NULL}, /* OZO9100 - Zoom 2919 (K56 Faxmodem) */
{0x3024a341, NULL}, /* PMC2430 - Pace 56 Voice Internal Modem */
{0x1000eb49, NULL}, /* ROK0010 - Rockwell ? */
{0x1200b23d, NULL}, /* RSS0012 - OMRON ME5614ISA */
{0x5002734a, NULL}, /* RSS0250 - 5614Jx3(G) Internal Modem */
{0x6202734a, NULL}, /* RSS0262 - 5614Jx3[G] V90+K56Flex Modem */
{0xc100ad4d, NULL}, /* SMM00C1 - Leopard 56k PnP */
{0x9012b04e, NULL}, /* SUP1290 - Supra ? */
{0x1013b04e, NULL}, /* SUP1310 - SupraExpress 336i PnP */
{0x8013b04e, NULL}, /* SUP1380 - SupraExpress 288i PnP Voice */
{0x8113b04e, NULL}, /* SUP1381 - SupraExpress 336i PnP Voice */
{0x5016b04e, NULL}, /* SUP1650 - Supra 336i Sp Intl */
{0x7016b04e, NULL}, /* SUP1670 - Supra 336i V+ Intl */
{0x7420b04e, NULL}, /* SUP2070 - Supra ? */
{0x8020b04e, NULL}, /* SUP2080 - Supra ? */
{0x8420b04e, NULL}, /* SUP2084 - SupraExpress 56i PnP */
{0x7121b04e, NULL}, /* SUP2171 - SupraExpress 56i Sp? */
{0x8024b04e, NULL}, /* SUP2480 - Supra ? */
{0x01007256, NULL}, /* USR0001 - U.S. Robotics Inc., Sportster W */
{0x02007256, NULL}, /* USR0002 - U.S. Robotics Inc. Sportster 33. */
{0x04007256, NULL}, /* USR0004 - USR Sportster 14.4k */
{0x06007256, NULL}, /* USR0006 - USR Sportster 33.6k */
{0x11007256, NULL}, /* USR0011 - USR ? */
{0x01017256, NULL}, /* USR0101 - USR ? */
{0x30207256, NULL}, /* USR2030 - U.S.Robotics Inc. Sportster 560 */
{0x50207256, NULL}, /* USR2050 - U.S.Robotics Inc. Sportster 33. */
{0x70207256, NULL}, /* USR2070 - U.S.Robotics Inc. Sportster 560 */
{0x30307256, NULL}, /* USR3030 - U.S. Robotics 56K FAX INT */
{0x31307256, NULL}, /* USR3031 - U.S. Robotics 56K FAX INT */
{0x50307256, NULL}, /* USR3050 - U.S. Robotics 56K FAX INT */
{0x70307256, NULL}, /* USR3070 - U.S. Robotics 56K Voice INT */
{0x90307256, NULL}, /* USR3090 - USR ? */
{0x70917256, NULL}, /* USR9170 - U.S. Robotics 56K FAX INT */
{0x90917256, NULL}, /* USR9190 - USR 56k Voice INT */
{0x0300695c, NULL}, /* WCI0003 - Fax/Voice/Modem/Speakphone/Asvd */
{0x01a0896a, NULL}, /* ZTIA001 - Zoom Internal V90 Faxmodem */
{0x61f7896a, NULL}, /* ZTIF761 - Zoom ComStar 33.6 */
{0}
};
static int
sio_isa_probe(dev)
device_t dev;
{
/* Check isapnp ids */
if (ISA_PNP_PROBE(device_get_parent(dev), dev, sio_ids) == ENXIO)
return (ENXIO);
return (sioprobe(dev, 0));
}
static int
sioprobe(dev, xrid)
int
sioprobe(dev, xrid, noprobe)
device_t dev;
int xrid;
int noprobe;
{
#if 0
static bool_t already_init;
@ -780,7 +393,7 @@ sioprobe(dev, xrid)
while (sio_inited != 2)
if (atomic_cmpset_int(&sio_inited, 0, 1)) {
mtx_init(&sio_lock, driver_name, (comconsole != -1) ?
mtx_init(&sio_lock, sio_driver_name, (comconsole != -1) ?
MTX_SPIN | MTX_QUIET : MTX_SPIN);
atomic_store_rel_int(&sio_inited, 2);
}
@ -944,7 +557,7 @@ sioprobe(dev, xrid)
* Some pcmcia cards have the "TXRDY bug", so we check everyone
* for IIR_TXRDY implementation ( Palido 321s, DC-1S... )
*/
if (COM_NOPROBE(flags)) {
if (noprobe) {
/* Reading IIR register twice */
for (fn = 0; fn < 2; fn ++) {
DELAY(10000);
@ -1106,14 +719,7 @@ espattach(com, esp_port)
}
#endif /* COM_ESP */
static int
sio_isa_attach(dev)
device_t dev;
{
return (sioattach(dev, 0));
}
static int
int
sioattach(dev, xrid)
device_t dev;
int xrid;
@ -3386,13 +2992,3 @@ siogdbputc(c)
splx(s);
}
#endif
DRIVER_MODULE(sio, isa, sio_isa_driver, sio_devclass, 0, 0);
DRIVER_MODULE(sio, acpi, sio_isa_driver, sio_devclass, 0, 0);
#if NCARD > 0
DRIVER_MODULE(sio, pccard, sio_pccard_driver, sio_devclass, 0, 0);
#endif
#if NPCI > 0
DRIVER_MODULE(sio, pci, sio_pci_driver, sio_devclass, 0, 0);
DRIVER_MODULE(sio, cardbus, sio_pci_driver, sio_devclass, 0, 0);
#endif

162
sys/dev/sio/sio_isa.c Normal file
View File

@ -0,0 +1,162 @@
/*
* Copyright (c) 2001 M. Warner Losh. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/module.h>
#include <sys/tty.h>
#include <machine/clock.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <sys/timepps.h>
#include <dev/sio/siovar.h>
#include <isa/isareg.h>
#include <isa/isavar.h>
static int sio_isa_attach __P((device_t dev));
static int sio_isa_probe __P((device_t dev));
static device_method_t sio_isa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sio_isa_probe),
DEVMETHOD(device_attach, sio_isa_attach),
{ 0, 0 }
};
static driver_t sio_isa_driver = {
sio_driver_name,
sio_isa_methods,
sizeof(struct com_s),
};
static struct isa_pnp_id sio_ids[] = {
{0x0005d041, "Standard PC COM port"}, /* PNP0500 */
{0x0105d041, "16550A-compatible COM port"}, /* PNP0501 */
{0x0205d041, "Multiport serial device (non-intelligent 16550)"}, /* PNP0502 */
{0x1005d041, "Generic IRDA-compatible device"}, /* PNP0510 */
{0x1105d041, "Generic IRDA-compatible device"}, /* PNP0511 */
/* Devices that do not have a compatid */
{0x12206804, NULL}, /* ACH2012 - 5634BTS 56K Video Ready Modem */
{0x7602a904, NULL}, /* AEI0276 - 56K v.90 Fax Modem (LKT) */
{0x00007905, NULL}, /* AKY0000 - 56K Plug&Play Modem */
{0x01405407, NULL}, /* AZT4001 - AZT3000 PnP SOUND DEVICE, MODEM */
{0x56039008, NULL}, /* BDP0356 - Best Data 56x2 */
{0x56159008, NULL}, /* BDP1556 - B.D. Smart One 56SPS,Voice Modem*/
{0x36339008, NULL}, /* BDP3336 - Best Data Prods. 336F */
{0x0014490a, NULL}, /* BRI1400 - Boca 33.6 PnP */
{0x0015490a, NULL}, /* BRI1500 - Internal Fax Data */
{0x0034490a, NULL}, /* BRI3400 - Internal ACF Modem */
{0x0094490a, NULL}, /* BRI9400 - Boca K56Flex PnP */
{0x00b4490a, NULL}, /* BRIB400 - Boca 56k PnP */
{0x0030320d, NULL}, /* CIR3000 - Cirrus Logic V43 */
{0x0100440e, NULL}, /* CRD0001 - Cardinal MVP288IV ? */
{0x36033610, NULL}, /* DAV0336 - DAVICOM 336PNP MODEM */
{0x0000aa1a, NULL}, /* FUJ0000 - FUJITSU Modem 33600 PNP/I2 */
{0x1200c31e, NULL}, /* GVC0012 - VF1128HV-R9 (win modem?) */
{0x0303c31e, NULL}, /* GVC0303 - MaxTech 33.6 PnP D/F/V */
{0x0505c31e, NULL}, /* GVC0505 - GVC 56k Faxmodem */
{0x0116c31e, NULL}, /* GVC1601 - Rockwell V.34 Plug & Play Modem */
{0x0050c31e, NULL}, /* GVC5000 - some GVC modem */
{0x3800f91e, NULL}, /* GWY0038 - Telepath with v.90 */
{0x9062f91e, NULL}, /* GWY6290 - Telepath with x2 Technology */
{0x8100e425, NULL}, /* IOD0081 - I-O DATA DEVICE,INC. IFML-560 */
{0x21002534, NULL}, /* MAE0021 - Jetstream Int V.90 56k Voice Series 2*/
{0x0000f435, NULL}, /* MOT0000 - Motorola ModemSURFR 33.6 Intern */
{0x5015f435, NULL}, /* MOT1550 - Motorola ModemSURFR 56K Modem */
{0xf015f435, NULL}, /* MOT15F0 - Motorola VoiceSURFR 56K Modem */
{0x6045f435, NULL}, /* MOT4560 - Motorola ? */
{0x61e7a338, NULL}, /* NECE761 - 33.6Modem */
{0x08804f3f, NULL}, /* OZO8008 - Zoom (33.6k Modem) */
{0x0f804f3f, NULL}, /* OZO800f - Zoom 2812 (56k Modem) */
{0x39804f3f, NULL}, /* OZO8039 - Zoom 56k flex */
{0x00914f3f, NULL}, /* OZO9100 - Zoom 2919 (K56 Faxmodem) */
{0x3024a341, NULL}, /* PMC2430 - Pace 56 Voice Internal Modem */
{0x1000eb49, NULL}, /* ROK0010 - Rockwell ? */
{0x1200b23d, NULL}, /* RSS0012 - OMRON ME5614ISA */
{0x5002734a, NULL}, /* RSS0250 - 5614Jx3(G) Internal Modem */
{0x6202734a, NULL}, /* RSS0262 - 5614Jx3[G] V90+K56Flex Modem */
{0xc100ad4d, NULL}, /* SMM00C1 - Leopard 56k PnP */
{0x9012b04e, NULL}, /* SUP1290 - Supra ? */
{0x1013b04e, NULL}, /* SUP1310 - SupraExpress 336i PnP */
{0x8013b04e, NULL}, /* SUP1380 - SupraExpress 288i PnP Voice */
{0x8113b04e, NULL}, /* SUP1381 - SupraExpress 336i PnP Voice */
{0x5016b04e, NULL}, /* SUP1650 - Supra 336i Sp Intl */
{0x7016b04e, NULL}, /* SUP1670 - Supra 336i V+ Intl */
{0x7420b04e, NULL}, /* SUP2070 - Supra ? */
{0x8020b04e, NULL}, /* SUP2080 - Supra ? */
{0x8420b04e, NULL}, /* SUP2084 - SupraExpress 56i PnP */
{0x7121b04e, NULL}, /* SUP2171 - SupraExpress 56i Sp? */
{0x8024b04e, NULL}, /* SUP2480 - Supra ? */
{0x01007256, NULL}, /* USR0001 - U.S. Robotics Inc., Sportster W */
{0x02007256, NULL}, /* USR0002 - U.S. Robotics Inc. Sportster 33. */
{0x04007256, NULL}, /* USR0004 - USR Sportster 14.4k */
{0x06007256, NULL}, /* USR0006 - USR Sportster 33.6k */
{0x11007256, NULL}, /* USR0011 - USR ? */
{0x01017256, NULL}, /* USR0101 - USR ? */
{0x30207256, NULL}, /* USR2030 - U.S.Robotics Inc. Sportster 560 */
{0x50207256, NULL}, /* USR2050 - U.S.Robotics Inc. Sportster 33. */
{0x70207256, NULL}, /* USR2070 - U.S.Robotics Inc. Sportster 560 */
{0x30307256, NULL}, /* USR3030 - U.S. Robotics 56K FAX INT */
{0x31307256, NULL}, /* USR3031 - U.S. Robotics 56K FAX INT */
{0x50307256, NULL}, /* USR3050 - U.S. Robotics 56K FAX INT */
{0x70307256, NULL}, /* USR3070 - U.S. Robotics 56K Voice INT */
{0x90307256, NULL}, /* USR3090 - USR ? */
{0x70917256, NULL}, /* USR9170 - U.S. Robotics 56K FAX INT */
{0x90917256, NULL}, /* USR9190 - USR 56k Voice INT */
{0x0300695c, NULL}, /* WCI0003 - Fax/Voice/Modem/Speakphone/Asvd */
{0x01a0896a, NULL}, /* ZTIA001 - Zoom Internal V90 Faxmodem */
{0x61f7896a, NULL}, /* ZTIF761 - Zoom ComStar 33.6 */
{0}
};
static int
sio_isa_probe(dev)
device_t dev;
{
/* Check isapnp ids */
if (ISA_PNP_PROBE(device_get_parent(dev), dev, sio_ids) == ENXIO)
return (ENXIO);
return (sioprobe(dev, 0, 0));
}
static int
sio_isa_attach(dev)
device_t dev;
{
return (sioattach(dev, 0));
}
DRIVER_MODULE(sio, isa, sio_isa_driver, sio_devclass, 0, 0);
DRIVER_MODULE(sio, acpi, sio_isa_driver, sio_devclass, 0, 0);

87
sys/dev/sio/sio_pccard.c Normal file
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@ -0,0 +1,87 @@
/*
* Copyright (c) 2001 M. Warner Losh. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/module.h>
#include <sys/tty.h>
#include <machine/clock.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/timepps.h>
#include <dev/sio/siovar.h>
static int sio_pccard_attach __P((device_t dev));
static int sio_pccard_detach __P((device_t dev));
static int sio_pccard_probe __P((device_t dev));
static device_method_t sio_pccard_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sio_pccard_probe),
DEVMETHOD(device_attach, sio_pccard_attach),
DEVMETHOD(device_detach, sio_pccard_detach),
{ 0, 0 }
};
static driver_t sio_pccard_driver = {
sio_driver_name,
sio_pccard_methods,
sizeof(struct com_s),
};
static int
sio_pccard_probe(dev)
device_t dev;
{
/* Do not probe IRQ - pccard doesn't turn on the interrupt line */
/* until bus_setup_intr */
return (sioprobe(dev, 0, 1));
}
static int
sio_pccard_attach(dev)
device_t dev;
{
return (sioattach(dev, 0));
}
static int
sio_pccard_detach(dev)
device_t dev;
{
return (siodetach(dev));
}
DRIVER_MODULE(sio, pccard, sio_pccard_driver, sio_devclass, 0, 0);

147
sys/dev/sio/sio_pci.c Normal file
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@ -0,0 +1,147 @@
/*
* Copyright (c) 2001 M. Warner Losh. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/module.h>
#include <sys/tty.h>
#include <machine/clock.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <sys/timepps.h>
#include <dev/sio/siovar.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
static int sio_pci_attach __P((device_t dev));
static void sio_pci_kludge_unit __P((device_t dev));
static int sio_pci_probe __P((device_t dev));
static device_method_t sio_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sio_pci_probe),
DEVMETHOD(device_attach, sio_pci_attach),
{ 0, 0 }
};
static driver_t sio_pci_driver = {
sio_driver_name,
sio_pci_methods,
sizeof(struct com_s),
};
struct pci_ids {
u_int32_t type;
const char *desc;
int rid;
};
static struct pci_ids pci_ids[] = {
{ 0x100812b9, "3COM PCI FaxModem", 0x10 },
{ 0x2000131f, "CyberSerial (1-port) 16550", 0x10 },
{ 0x01101407, "Koutech IOFLEX-2S PCI Dual Port Serial", 0x10 },
{ 0x01111407, "Koutech IOFLEX-2S PCI Dual Port Serial", 0x10 },
{ 0x048011c1, "Lucent kermit based PCI Modem", 0x14 },
{ 0x95211415, "Oxford Semiconductor PCI Dual Port Serial", 0x10 },
{ 0x0000151f, "SmartLink 5634PCV SurfRider", 0x10 },
/* { 0xXXXXXXXX, "Xircom Cardbus modem", 0x10 }, */
{ 0x00000000, NULL, 0 }
};
static int
sio_pci_attach(dev)
device_t dev;
{
u_int32_t type;
struct pci_ids *id;
type = pci_get_devid(dev);
id = pci_ids;
while (id->type && id->type != type)
id++;
if (id->desc == NULL)
return (ENXIO);
sio_pci_kludge_unit(dev);
return (sioattach(dev, id->rid));
}
/*
* Don't cut and paste this to other drivers. It is a horrible kludge
* which will fail to work and also be unnecessary in future versions.
*/
static void
sio_pci_kludge_unit(dev)
device_t dev;
{
devclass_t dc;
int err;
int start;
int unit;
unit = 0;
start = 0;
while (resource_int_value("sio", unit, "port", &start) == 0 &&
start > 0)
unit++;
if (device_get_unit(dev) < unit) {
dc = device_get_devclass(dev);
while (devclass_get_device(dc, unit))
unit++;
device_printf(dev, "moving to sio%d\n", unit);
err = device_set_unit(dev, unit); /* EVIL DO NOT COPY */
if (err)
device_printf(dev, "error moving device %d\n", err);
}
}
static int
sio_pci_probe(dev)
device_t dev;
{
u_int32_t type;
struct pci_ids *id;
type = pci_get_devid(dev);
id = pci_ids;
while (id->type && id->type != type)
id++;
if (id->desc == NULL)
return (ENXIO);
device_set_desc(dev, id->desc);
return (sioprobe(dev, id->rid, 0));
}
DRIVER_MODULE(sio, pci, sio_pci_driver, sio_devclass, 0, 0);
DRIVER_MODULE(sio, cardbus, sio_pci_driver, sio_devclass, 0, 0);

2
sys/dev/sio/sioreg.h
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@ -126,3 +126,5 @@
#ifndef CONSPEED
#define CONSPEED 9600
#endif
#define IO_COMSIZE 8 /* 8250, 16x50 com controllers */

153
sys/dev/sio/siovar.h Normal file
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@ -0,0 +1,153 @@
/*-
* 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.
*
* $FreeBSD$
*/
#define SET_FLAG(dev, bit) device_set_flags(dev, device_get_flags(dev) | (bit))
#define CLR_FLAG(dev, bit) device_set_flags(dev, device_get_flags(dev) & ~(bit))
#define CE_NTYPES 3
/* 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 flags; /* Copy isa device flags */
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 *ibufold; /* old input buffer, to be freed */
u_char *ihighwater; /* threshold in input buffer */
u_char *iptr; /* next free spot in input buffer */
int ibufsize; /* size of ibuf (not include error bytes) */
int ierroff; /* offset of error bytes in ibuf */
struct lbq obufq; /* head of queue of output buffers */
struct lbq obufs[2]; /* output buffers */
bus_space_tag_t bst;
bus_space_handle_t bsh;
Port_t data_port; /* i/o ports */
#ifdef COM_ESP
Port_t esp_port;
#endif
Port_t int_id_port;
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;
struct pps_state pps;
u_long bytes_in; /* statistics */
u_long bytes_out;
u_int delta_error_counts[CE_NTYPES];
u_long error_counts[CE_NTYPES];
struct resource *irqres;
struct resource *ioportres;
void *cookie;
dev_t devs[6];
/*
* Data area for output buffers. Someday we should build the output
* buffer queue without copying data.
*/
u_char obuf1[256];
u_char obuf2[256];
};
int sioattach __P((device_t dev, int xrid));
int siodetach __P((device_t dev));
int sioprobe __P((device_t dev, int xrid, int noprobe));
extern devclass_t sio_devclass;
extern char sio_driver_name[];

1
sys/isa/isareg.h
View File

@ -148,7 +148,6 @@
#define IO_ASCSIZE 5 /* AmiScan GI1904-based hand scanner */
#define IO_CGASIZE 12 /* CGA controllers */
#define IO_COMSIZE 8 /* 8250, 16x50 com controllers */
#define IO_DMASIZE 16 /* 8237 DMA controllers */
#define IO_DPGSIZE 32 /* 74LS612 DMA page registers */
#define IO_EISASIZE 256 /* EISA controllers */