Import v0.0.2 alpha of the Stallion driver
Submitted by: Greg Ungerer (gerg@stallion.oz.au)
This commit is contained in:
Peter Wemm
parent
0a9462e353
commit
7450fe9fc2
@ -2,8 +2,8 @@
|
||||
Stallion Multiport Serial Driver Readme
|
||||
---------------------------------------
|
||||
|
||||
Version: 0.0.1 alpha
|
||||
Date: 21DEC95
|
||||
Version: 0.0.2 alpha
|
||||
Date: 08JAN96
|
||||
Author: Greg Ungerer (gerg@stallion.oz.au)
|
||||
|
||||
|
||||
@ -11,8 +11,8 @@ Author: Greg Ungerer (gerg@stallion.oz.au)
|
||||
1. INTRODUCTION
|
||||
|
||||
This is a FreeBSD driver for some of the Stallion Technologies range of
|
||||
multiport serial boards. This is the very first release of this driver, so
|
||||
it should be considered to be of very alpha quality.
|
||||
multiport serial boards. This driver is still very new, so it should be
|
||||
considered to be of very alpha quality.
|
||||
|
||||
This driver has not been developed by Stallion Technologies. I developed it
|
||||
in my spare time in the hope that it would be useful. As such there is no
|
||||
@ -63,8 +63,9 @@ out for those some time soon...
|
||||
|
||||
2. INSTALLATION
|
||||
|
||||
This driver was developed on a FreeBSD 2.0.5 system. I have not tryed it
|
||||
on a 2.1 system yet, so I don't know if it will go in painlessly or not...
|
||||
This driver, as is, will work on a FreeBSD 2.1 system. It will run on
|
||||
a 2.0.5 system, or -current version systems by changing a define in the
|
||||
driver source.
|
||||
|
||||
You will need to build a new kernel to use this driver. So the first thing
|
||||
you need is to have the full kernel source. Most people will have this
|
||||
@ -81,13 +82,16 @@ Instructions to install:
|
||||
cp stallion.c /usr/src/sys/i386/isa
|
||||
cp scd1400.h /usr/src/sys/i386/ic
|
||||
|
||||
Note: if you are not using FreeBSD 2.1.0 then you may need to edit the
|
||||
stallion.c file and change the VFREEBSD define to match your version.
|
||||
|
||||
2. Add a character device switch table entry for the driver into the cdevsw
|
||||
table structure. This involves adding some code into the kernel conf.c
|
||||
file:
|
||||
|
||||
cd /usr/src/sys/i386/i386
|
||||
vi conf.c
|
||||
- add the following lines (in 2.0.5 I put them at line 1019):
|
||||
- add the following lines (in 2.1 I put them at line 729):
|
||||
|
||||
/* Stallion Multiport Serial Driver */
|
||||
#include "stl.h"
|
||||
@ -117,13 +121,13 @@ d_ttycv_t stldevtotty;
|
||||
|
||||
|
||||
- and then inside the actual cdevsw structure definition, at the
|
||||
last entry add (this is now line 1259 in the 2.0.5 conf.c):
|
||||
last entry add (this is now line 1384 in the 2.1 conf.c):
|
||||
|
||||
{ stlopen, stlclose, stlread, stlwrite, /*67*/
|
||||
{ stlopen, stlclose, stlread, stlwrite, /*72*/
|
||||
stlioctl, stlstop, stlreset, stldevtotty,/*stallion*/
|
||||
ttselect, stlmmap, stlstrategy },
|
||||
|
||||
- the line above used major number 67, but this may be different
|
||||
- the line above used major number 72, but this may be different
|
||||
on your system. Take note of what major number you are using.
|
||||
|
||||
- save the file and exit vi.
|
||||
@ -193,7 +197,7 @@ more than 1 board then just supply the number of boards you are using as a
|
||||
command line parameter to mkdevnods and it will create nodes for that number
|
||||
of boards. By default it will create device nodes for 1 board only.
|
||||
|
||||
Note that if the driver is not installed at character major number 67 then
|
||||
Note that if the driver is not installed at character major number 72 then
|
||||
you will need to edit the mkdevnods script and modify the STL_SERIALMAJOR
|
||||
variable to the major number you are using.
|
||||
|
||||
@ -223,14 +227,14 @@ under FreeBSD:
|
||||
|
||||
4. NOTES
|
||||
|
||||
Be aware that this is the first release of this driver, so there is sure to
|
||||
be some bugs in it. Please email me any feedback on bugs, problems, or even
|
||||
good experiences with this driver!
|
||||
Be aware that this driver is still very new, so there is sure to be some bugs
|
||||
in it. Please email me any feedback on bugs, problems, or even good
|
||||
experiences with this driver!
|
||||
|
||||
There is no real smart line discipline bypass code yet (like in the sio
|
||||
driver). I will add this for the next driver release.
|
||||
|
||||
I will probably also add LKM support for the next driver release.
|
||||
I will probably also add LKM support some time soon.
|
||||
|
||||
|
||||
|
||||
|
||||
@ -45,11 +45,11 @@
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/tty.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/user.h>
|
||||
#include <sys/conf.h>
|
||||
#include <sys/file.h>
|
||||
#include <sys/uio.h>
|
||||
#include <sys/syslog.h>
|
||||
#include <sys/devconf.h>
|
||||
|
||||
#include <machine/cpu.h>
|
||||
#include <machine/clock.h>
|
||||
@ -58,6 +58,21 @@
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Define the version level of the kernel - so we can compile in the
|
||||
* appropriate bits of code. By default this will compile for a 2.1
|
||||
* level kernel.
|
||||
*/
|
||||
#define VFREEBSD 210
|
||||
|
||||
#if VFREEBSD >= 220
|
||||
#define STATIC static
|
||||
#else
|
||||
#define STATIC
|
||||
#endif
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Define different board types. At the moment I have only declared
|
||||
* those boards that this driver supports. But I will use the standard
|
||||
@ -120,7 +135,7 @@ static unsigned int stl_irqshared = 0;
|
||||
*/
|
||||
static char *stl_drvname = "stl";
|
||||
static char *stl_longdrvname = "Stallion Multiport Serial Driver";
|
||||
static char *stl_drvversion = "0.0.1";
|
||||
static char *stl_drvversion = "0.0.2";
|
||||
static int stl_brdprobed[STL_MAXBRDS];
|
||||
|
||||
static int stl_nrbrds = 0;
|
||||
@ -396,20 +411,28 @@ static int stl_cd1400clkdivs[] = {
|
||||
|
||||
/*
|
||||
* Declare all those functions in this driver! First up is the set of
|
||||
* externally visible functions. Followed by the internal functions.
|
||||
* externally visible functions.
|
||||
*/
|
||||
int stlprobe(struct isa_device *idp);
|
||||
int stlattach(struct isa_device *idp);
|
||||
void stlintr(int unit);
|
||||
int stlopen(dev_t dev, int flag, int mode, struct proc *p);
|
||||
int stlclose(dev_t dev, int flag, int mode, struct proc *p);
|
||||
int stlwrite(dev_t dev, struct uio *uiop, int flag);
|
||||
int stlread(dev_t dev, struct uio *uiop, int flag);
|
||||
int stlioctl(dev_t dev, int cmd, caddr_t data, int flag,
|
||||
struct proc *p);
|
||||
int stlstop(struct tty *tp, int rw);
|
||||
struct tty *stldevtotty(dev_t dev);
|
||||
|
||||
int stlprobe(struct isa_device *idp);
|
||||
int stlattach(struct isa_device *idp);
|
||||
|
||||
STATIC d_open_t stlopen;
|
||||
STATIC d_close_t stlclose;
|
||||
STATIC d_read_t stlread;
|
||||
STATIC d_write_t stlwrite;
|
||||
STATIC d_ioctl_t stlioctl;
|
||||
STATIC d_stop_t stlstop;
|
||||
|
||||
#if VFREEBSD >= 220
|
||||
STATIC d_devtotty_t stldevtotty;
|
||||
#else
|
||||
struct tty *stldevtotty(dev_t dev);
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Internal function prototypes.
|
||||
*/
|
||||
static stlport_t *stl_dev2port(dev_t dev);
|
||||
static int stl_rawopen(stlport_t *portp);
|
||||
static int stl_rawclose(stlport_t *portp);
|
||||
@ -450,6 +473,38 @@ struct isa_driver stldriver = {
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
#if VFREEBSD >= 220
|
||||
|
||||
/*
|
||||
* FreeBSD-2.2+ kernel linkage.
|
||||
*/
|
||||
|
||||
#define CDEV_MAJOR 70
|
||||
|
||||
static struct cdevsw stl_cdevsw =
|
||||
{ stlopen, stlclose, stlread, stlwrite,
|
||||
stlioctl, stlstop, noreset, stldevtotty,
|
||||
ttselect, nommap, NULL, "stl", NULL, -1 };
|
||||
|
||||
static stl_devsw_installed = 0;
|
||||
|
||||
static void stl_drvinit(void *unused)
|
||||
{
|
||||
dev_t dev;
|
||||
|
||||
if (! stl_devsw_installed ) {
|
||||
dev = makedev(CDEV_MAJOR, 0);
|
||||
cdevsw_add(&dev, &stl_cdevsw, NULL);
|
||||
stl_devsw_installed = 1;
|
||||
}
|
||||
}
|
||||
|
||||
SYSINIT(sidev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,stl_drvinit,NULL)
|
||||
|
||||
#endif
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Probe for some type of EasyIO or EasyConnection 8/32 board at
|
||||
* the supplied address. All we do is check if we can find the
|
||||
@ -528,7 +583,7 @@ int stlattach(struct isa_device *idp)
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
int stlopen(dev_t dev, int flag, int mode, struct proc *p)
|
||||
STATIC int stlopen(dev_t dev, int flag, int mode, struct proc *p)
|
||||
{
|
||||
struct tty *tp;
|
||||
stlport_t *portp;
|
||||
@ -585,7 +640,7 @@ stlopen_restart:
|
||||
goto stlopen_end;
|
||||
}
|
||||
} else {
|
||||
if (callout) {
|
||||
if (portp->callout != 0) {
|
||||
if (flag & O_NONBLOCK) {
|
||||
error = EBUSY;
|
||||
goto stlopen_end;
|
||||
@ -611,7 +666,7 @@ stlopen_restart:
|
||||
((tp->t_cflag & CLOCAL) == 0) &&
|
||||
((flag & O_NONBLOCK) == 0)) {
|
||||
portp->waitopens++;
|
||||
error = tsleep(&tp->t_rawq, (TTIPRI | PCATCH), "stldcd", 0);
|
||||
error = tsleep(TSA_CARR_ON(tp), (TTIPRI | PCATCH), "stldcd",0);
|
||||
portp->waitopens--;
|
||||
if (error)
|
||||
goto stlopen_end;
|
||||
@ -632,7 +687,7 @@ stlopen_restart:
|
||||
*/
|
||||
stlopen_end:
|
||||
splx(x);
|
||||
if ((tp->t_state & TS_ISOPEN) == 0)
|
||||
if (((tp->t_state & TS_ISOPEN) == 0) && (portp->waitopens == 0))
|
||||
stl_rawclose(portp);
|
||||
|
||||
return(error);
|
||||
@ -640,7 +695,7 @@ stlopen_end:
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
int stlclose(dev_t dev, int flag, int mode, struct proc *p)
|
||||
STATIC int stlclose(dev_t dev, int flag, int mode, struct proc *p)
|
||||
{
|
||||
struct tty *tp;
|
||||
stlport_t *portp;
|
||||
@ -665,7 +720,7 @@ int stlclose(dev_t dev, int flag, int mode, struct proc *p)
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
int stlread(dev_t dev, struct uio *uiop, int flag)
|
||||
STATIC int stlread(dev_t dev, struct uio *uiop, int flag)
|
||||
{
|
||||
stlport_t *portp;
|
||||
|
||||
@ -681,19 +736,28 @@ int stlread(dev_t dev, struct uio *uiop, int flag)
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
int stlstop(struct tty *tp, int rw)
|
||||
#if VFREEBSD >= 220
|
||||
STATIC void stlstop(struct tty *tp, int rw)
|
||||
#else
|
||||
STATIC int stlstop(struct tty *tp, int rw)
|
||||
#endif
|
||||
{
|
||||
#if DEBUG
|
||||
printf("stlstop(tp=%x,rw=%x)\n", (int) tp, rw);
|
||||
#endif
|
||||
|
||||
stl_flush((stlport_t *) tp, rw);
|
||||
|
||||
#if VFREEBSD >= 220
|
||||
return;
|
||||
#else
|
||||
return(0);
|
||||
#endif
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
struct tty *stldevtotty(dev_t dev)
|
||||
STATIC struct tty *stldevtotty(dev_t dev)
|
||||
{
|
||||
#if DEBUG
|
||||
printf("stldevtotty(dev=%x)\n", dev);
|
||||
@ -703,7 +767,7 @@ struct tty *stldevtotty(dev_t dev)
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
int stlwrite(dev_t dev, struct uio *uiop, int flag)
|
||||
STATIC int stlwrite(dev_t dev, struct uio *uiop, int flag)
|
||||
{
|
||||
stlport_t *portp;
|
||||
|
||||
@ -719,7 +783,7 @@ int stlwrite(dev_t dev, struct uio *uiop, int flag)
|
||||
|
||||
/*****************************************************************************/
|
||||
|
||||
int stlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
|
||||
STATIC int stlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
|
||||
{
|
||||
struct termios *newtios, *localtios;
|
||||
struct tty *tp;
|
||||
@ -789,15 +853,14 @@ int stlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
|
||||
}
|
||||
#endif
|
||||
|
||||
#if 0
|
||||
/*
|
||||
* Carry out some pre-cmd processing work first...
|
||||
* Hmmm, not so sure we want this, disable for now...
|
||||
*/
|
||||
if ((cmd == TIOCSETA) || (cmd == TIOCSETAW) || (cmd == TIOCSETAF)) {
|
||||
newtios = (struct termios *) data;
|
||||
localtios = (dev & STL_CALLOUTDEV) ? &portp->initouttios :
|
||||
&portp->initintios;
|
||||
localtios = (dev & STL_CALLOUTDEV) ? &portp->lockouttios :
|
||||
&portp->lockintios;
|
||||
|
||||
newtios->c_iflag = (tp->t_iflag & localtios->c_iflag) |
|
||||
(newtios->c_iflag & ~localtios->c_iflag);
|
||||
@ -816,7 +879,6 @@ int stlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
|
||||
if (localtios->c_ospeed != 0)
|
||||
newtios->c_ospeed = tp->t_ospeed;
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Call the line discipline and the common command processing to
|
||||
@ -899,7 +961,7 @@ int stlioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
|
||||
* pointer. Return NULL if the device number is not a valid port.
|
||||
*/
|
||||
|
||||
static stlport_t *stl_dev2port(dev_t dev)
|
||||
STATIC stlport_t *stl_dev2port(dev_t dev)
|
||||
{
|
||||
stlbrd_t *brdp;
|
||||
int brdnr, portnr;
|
||||
@ -970,7 +1032,7 @@ static int stl_rawclose(stlport_t *portp)
|
||||
portp->brklen = 0;
|
||||
portp->state &= ~(ASY_ACTIVE | ASY_RTSFLOW);
|
||||
wakeup(&portp->callout);
|
||||
wakeup(&tp->t_rawq);
|
||||
wakeup(TSA_CARR_ON(tp));
|
||||
return(0);
|
||||
}
|
||||
|
||||
@ -1028,6 +1090,7 @@ static void stl_start(struct tty *tp)
|
||||
stl_flowcontrol(portp, 1, -1);
|
||||
}
|
||||
|
||||
#if VFREEBSD == 205
|
||||
/*
|
||||
* Check if the output cooked clist buffers are near empty, wake up
|
||||
* the line discipline to fill it up.
|
||||
@ -1039,6 +1102,15 @@ static void stl_start(struct tty *tp)
|
||||
}
|
||||
selwakeup(&tp->t_wsel);
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Do not transmit if we are timing out or stopped.
|
||||
*/
|
||||
if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) {
|
||||
splx(x);
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* Copy data from the clists into the interrupt ring queue. This will
|
||||
@ -1049,33 +1121,47 @@ static void stl_start(struct tty *tp)
|
||||
* spl protect our-selves, since we only ever update the head pointer,
|
||||
* and the interrupt routine only ever updates the tail pointer.
|
||||
*/
|
||||
head = portp->tx.head;
|
||||
tail = portp->tx.tail;
|
||||
if (head >= tail) {
|
||||
len = STL_TXBUFSIZE - (head - tail) - 1;
|
||||
stlen = portp->tx.endbuf - head;
|
||||
} else {
|
||||
len = tail - head - 1;
|
||||
stlen = len;
|
||||
if (tp->t_outq.c_cc != 0) {
|
||||
head = portp->tx.head;
|
||||
tail = portp->tx.tail;
|
||||
if (head >= tail) {
|
||||
len = STL_TXBUFSIZE - (head - tail) - 1;
|
||||
stlen = portp->tx.endbuf - head;
|
||||
} else {
|
||||
len = tail - head - 1;
|
||||
stlen = len;
|
||||
}
|
||||
|
||||
if (len > 0) {
|
||||
stlen = MIN(len, stlen);
|
||||
count = q_to_b(&tp->t_outq, head, stlen);
|
||||
len -= count;
|
||||
head += count;
|
||||
if (head >= portp->tx.endbuf) {
|
||||
head = portp->tx.buf;
|
||||
if (len > 0) {
|
||||
stlen = q_to_b(&tp->t_outq, head, len);
|
||||
head += stlen;
|
||||
count += stlen;
|
||||
}
|
||||
}
|
||||
portp->tx.head = head;
|
||||
if (count > 0)
|
||||
stl_startrxtx(portp, -1, 1);
|
||||
}
|
||||
|
||||
/*
|
||||
* If we sent something, make sure we are called again.
|
||||
*/
|
||||
tp->t_state |= TS_BUSY;
|
||||
}
|
||||
|
||||
if (len > 0) {
|
||||
stlen = MIN(len, stlen);
|
||||
count = q_to_b(&tp->t_outq, head, stlen);
|
||||
len -= count;
|
||||
head += count;
|
||||
if (head >= portp->tx.endbuf) {
|
||||
head = portp->tx.buf;
|
||||
if (len > 0) {
|
||||
stlen = q_to_b(&tp->t_outq, head, len);
|
||||
head += stlen;
|
||||
count += stlen;
|
||||
}
|
||||
}
|
||||
portp->tx.head = head;
|
||||
if (count > 0)
|
||||
stl_startrxtx(portp, -1, 1);
|
||||
}
|
||||
#if VFREEBSD != 205
|
||||
/*
|
||||
* Do any writer wakeups.
|
||||
*/
|
||||
ttwwakeup(tp);
|
||||
#endif
|
||||
|
||||
splx(x);
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user