Linux/Unix编程

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Unix_Linux

istallion.c：源码内容

* calculated on the fly, and irrelevant ports are skipped.
*/
for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
brdp = stli_brds[brdnr];
if (brdp == (stlibrd_t *) NULL)
continue;
if (brdp->state == 0)
continue;
maxoff = curoff + (brdp->nrports * MAXLINE);
if (off >= maxoff) {
curoff = maxoff;
continue;
}
totalport = brdnr * STL_MAXPORTS;
for (portnr = 0; (portnr < brdp->nrports); portnr++,
totalport++) {
portp = brdp->ports[portnr];
if (portp == (stliport_t *) NULL)
continue;
if (off >= (curoff += MAXLINE))
continue;
if ((pos - page + MAXLINE) > count)
goto stli_readdone;
pos += stli_portinfo(brdp, portp, totalport, pos);
}
}
*eof = 1;
stli_readdone:
*start = page;
return(pos - page);
}
/*****************************************************************************/
/*
* Generic send command routine. This will send a message to the slave,
* of the specified type with the specified argument. Must be very
* careful of data that will be copied out from shared memory -
* containing command results. The command completion is all done from
* a poll routine that does not have user context. Therefore you cannot
* copy back directly into user space, or to the kernel stack of a
* process. This routine does not sleep, so can be called from anywhere.
*/
static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback)
{
volatile cdkhdr_t *hdrp;
volatile cdkctrl_t *cp;
volatile unsigned char *bits;
unsigned long flags;
#if DEBUG
printk(KERN_DEBUG "stli_sendcmd(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d,"
"copyback=%d)n", (int) brdp, (int) portp, (int) cmd,
(int) arg, size, copyback);
#endif
save_flags(flags);
cli();
if (test_bit(ST_CMDING, &portp->state)) {
printk(KERN_ERR "STALLION: command already busy, cmd=%x!n",
(int) cmd);
restore_flags(flags);
return;
}
EBRDENABLE(brdp);
cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl;
if (size > 0) {
memcpy((void *) &(cp->args[0]), arg, size);
if (copyback) {
portp->argp = arg;
portp->argsize = size;
}
}
cp->status = 0;
cp->cmd = cmd;
hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset +
portp->portidx;
*bits |= portp->portbit;
set_bit(ST_CMDING, &portp->state);
EBRDDISABLE(brdp);
restore_flags(flags);
}
/*****************************************************************************/
/*
* Read data from shared memory. This assumes that the shared memory
* is enabled and that interrupts are off. Basically we just empty out
* the shared memory buffer into the tty buffer. Must be careful to
* handle the case where we fill up the tty buffer, but still have
* more chars to unload.
*/
static inline void stli_read(stlibrd_t *brdp, stliport_t *portp)
{
volatile cdkasyrq_t *rp;
volatile char *shbuf;
struct tty_struct *tty;
unsigned int head, tail, size;
unsigned int len, stlen;
#if DEBUG
printk(KERN_DEBUG "stli_read(brdp=%x,portp=%d)n",
(int) brdp, (int) portp);
#endif
if (test_bit(ST_RXSTOP, &portp->state))
return;
tty = portp->tty;
if (tty == (struct tty_struct *) NULL)
return;
rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
head = (unsigned int) rp->head;
if (head != ((unsigned int) rp->head))
head = (unsigned int) rp->head;
tail = (unsigned int) rp->tail;
size = portp->rxsize;
if (head >= tail) {
len = head - tail;
stlen = len;
} else {
len = size - (tail - head);
stlen = size - tail;
}
len = MIN(len, (TTY_FLIPBUF_SIZE - tty->flip.count));
shbuf = (volatile char *) EBRDGETMEMPTR(brdp, portp->rxoffset);
while (len > 0) {
stlen = MIN(len, stlen);
memcpy(tty->flip.char_buf_ptr, (char *) (shbuf + tail), stlen);
memset(tty->flip.flag_buf_ptr, 0, stlen);
tty->flip.char_buf_ptr += stlen;
tty->flip.flag_buf_ptr += stlen;
tty->flip.count += stlen;
len -= stlen;
tail += stlen;
if (tail >= size) {
tail = 0;
stlen = head;
}
}
rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq;
rp->tail = tail;
if (head != tail)
set_bit(ST_RXING, &portp->state);
tty_schedule_flip(tty);
}
/*****************************************************************************/
/*
* Set up and carry out any delayed commands. There is only a small set
* of slave commands that can be done "off-level". So it is not too
* difficult to deal with them here.
*/
static inline void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp)
{
int cmd;
if (test_bit(ST_DOSIGS, &portp->state)) {
if (test_bit(ST_DOFLUSHTX, &portp->state) &&
test_bit(ST_DOFLUSHRX, &portp->state))
cmd = A_SETSIGNALSF;
else if (test_bit(ST_DOFLUSHTX, &portp->state))
cmd = A_SETSIGNALSFTX;
else if (test_bit(ST_DOFLUSHRX, &portp->state))
cmd = A_SETSIGNALSFRX;
else
cmd = A_SETSIGNALS;
clear_bit(ST_DOFLUSHTX, &portp->state);
clear_bit(ST_DOFLUSHRX, &portp->state);
clear_bit(ST_DOSIGS, &portp->state);
memcpy((void *) &(cp->args[0]), (void *) &portp->asig,
sizeof(asysigs_t));
cp->status = 0;
cp->cmd = cmd;
set_bit(ST_CMDING, &portp->state);
} else if (test_bit(ST_DOFLUSHTX, &portp->state) ||
test_bit(ST_DOFLUSHRX, &portp->state)) {
cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0);
cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0);
clear_bit(ST_DOFLUSHTX, &portp->state);
clear_bit(ST_DOFLUSHRX, &portp->state);
memcpy((void *) &(cp->args[0]), (void *) &cmd, sizeof(int));
cp->status = 0;
cp->cmd = A_FLUSH;
set_bit(ST_CMDING, &portp->state);
}
}
/*****************************************************************************/
/*
* Host command service checking. This handles commands or messages
* coming from the slave to the host. Must have board shared memory
* enabled and interrupts off when called. Notice that by servicing the
* read data last we don't need to change the shared memory pointer
* during processing (which is a slow IO operation).
* Return value indicates if this port is still awaiting actions from
* the slave (like open, command, or even TX data being sent). If 0
* then port is still busy, otherwise no longer busy.
*/
static inline int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp)
{
volatile cdkasy_t *ap;
volatile cdkctrl_t *cp;
struct tty_struct *tty;
asynotify_t nt;
unsigned long oldsigs;
int rc, donerx;
#if DEBUG
printk(KERN_DEBUG "stli_hostcmd(brdp=%x,channr=%d)n",
(int) brdp, channr);
#endif
ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
cp = &ap->ctrl;
/*
* Check if we are waiting for an open completion message.
*/
if (test_bit(ST_OPENING, &portp->state)) {
rc = (int) cp->openarg;
if ((cp->open == 0) && (rc != 0)) {
if (rc > 0)
rc--;
cp->openarg = 0;
portp->rc = rc;
clear_bit(ST_OPENING, &portp->state);
wake_up_interruptible(&portp->raw_wait);
}
}
/*
* Check if we are waiting for a close completion message.
*/
if (test_bit(ST_CLOSING, &portp->state)) {
rc = (int) cp->closearg;
if ((cp->close == 0) && (rc != 0)) {
if (rc > 0)
rc--;
cp->closearg = 0;
portp->rc = rc;
clear_bit(ST_CLOSING, &portp->state);
wake_up_interruptible(&portp->raw_wait);
}
}
/*
* Check if we are waiting for a command completion message. We may
* need to copy out the command results associated with this command.
*/
if (test_bit(ST_CMDING, &portp->state)) {
rc = cp->status;
if ((cp->cmd == 0) && (rc != 0)) {
if (rc > 0)
rc--;
if (portp->argp != (void *) NULL) {
memcpy(portp->argp, (void *) &(cp->args[0]),
portp->argsize);
portp->argp = (void *) NULL;
}
cp->status = 0;
portp->rc = rc;
clear_bit(ST_CMDING, &portp->state);
stli_dodelaycmd(portp, cp);
wake_up_interruptible(&portp->raw_wait);
}
}
/*
* Check for any notification messages ready. This includes lots of
* different types of events - RX chars ready, RX break received,
* TX data low or empty in the slave, modem signals changed state.
*/
donerx = 0;
if (ap->notify) {
nt = ap->changed;
ap->notify = 0;
tty = portp->tty;
if (nt.signal & SG_DCD) {
oldsigs = portp->sigs;
portp->sigs = stli_mktiocm(nt.sigvalue);
clear_bit(ST_GETSIGS, &portp->state);
if ((portp->sigs & TIOCM_CD) &&
((oldsigs & TIOCM_CD) == 0))
wake_up_interruptible(&portp->open_wait);
if ((oldsigs & TIOCM_CD) &&
((portp->sigs & TIOCM_CD) == 0)) {
if (portp->flags & ASYNC_CHECK_CD) {
if (! ((portp->flags & ASYNC_CALLOUT_ACTIVE) &&
(portp->flags & ASYNC_CALLOUT_NOHUP))) {
if (tty != (struct tty_struct *) NULL) {
MOD_INC_USE_COUNT;
if (schedule_task(&portp->tqhangup) == 0)
MOD_DEC_USE_COUNT;
}
}
}
}
}
if (nt.data & DT_TXEMPTY)
clear_bit(ST_TXBUSY, &portp->state);
if (nt.data & (DT_TXEMPTY | DT_TXLOW)) {
if (tty != (struct tty_struct *) NULL) {
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
tty->ldisc.write_wakeup) {
(tty->ldisc.write_wakeup)(tty);
EBRDENABLE(brdp);
}
wake_up_interruptible(&tty->write_wait);
}
}
if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) {
if (tty != (struct tty_struct *) NULL) {
if (tty->flip.count < TTY_FLIPBUF_SIZE) {
tty->flip.count++;
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
*tty->flip.char_buf_ptr++ = 0;
if (portp->flags & ASYNC_SAK) {
do_SAK(tty);
EBRDENABLE(brdp);
}
tty_schedule_flip(tty);
}
}
}
if (nt.data & DT_RXBUSY) {
donerx++;
stli_read(brdp, portp);
}
}
/*
* It might seem odd that we are checking for more RX chars here.
* But, we need to handle the case where the tty buffer was previously
* filled, but we had more characters to pass up. The slave will not
* send any more RX notify messages until the RX buffer has been emptied.
* But it will leave the service bits on (since the buffer is not empty).
* So from here we can try to process more RX chars.
*/
if ((!donerx) && test_bit(ST_RXING, &portp->state)) {
clear_bit(ST_RXING, &portp->state);
stli_read(brdp, portp);
}
return((test_bit(ST_OPENING, &portp->state) ||
test_bit(ST_CLOSING, &portp->state) ||
test_bit(ST_CMDING, &portp->state) ||
test_bit(ST_TXBUSY, &portp->state) ||
test_bit(ST_RXING, &portp->state)) ? 0 : 1);
}
/*****************************************************************************/
/*
* Service all ports on a particular board. Assumes that the boards
* shared memory is enabled, and that the page pointer is pointed
* at the cdk header structure.
*/
static inline void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp)
{
stliport_t *portp;
unsigned char hostbits[(STL_MAXCHANS / 8) + 1];
unsigned char slavebits[(STL_MAXCHANS / 8) + 1];
unsigned char *slavep;
int bitpos, bitat, bitsize;
int channr, nrdevs, slavebitchange;
bitsize = brdp->bitsize;
nrdevs = brdp->nrdevs;
/*
* Check if slave wants any service. Basically we try to do as
* little work as possible here. There are 2 levels of service
* bits. So if there is nothing to do we bail early. We check
* 8 service bits at a time in the inner loop, so we can bypass
* the lot if none of them want service.
*/
memcpy(&hostbits[0], (((unsigned char *) hdrp) + brdp->hostoffset),
bitsize);
memset(&slavebits[0], 0, bitsize);
slavebitchange = 0;
for (bitpos = 0; (bitpos < bitsize); bitpos++) {
if (hostbits[bitpos] == 0)
continue;
channr = bitpos * 8;
for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) {
if (hostbits[bitpos] & bitat) {
portp = brdp->ports[(channr - 1)];
if (stli_hostcmd(brdp, portp)) {
slavebitchange++;
slavebits[bitpos] |= bitat;
}
}
}
}
/*
* If any of the ports are no longer busy then update them in the
* slave request bits. We need to do this after, since a host port
* service may initiate more slave requests.
*/
if (slavebitchange) {
hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
slavep = ((unsigned char *) hdrp) + brdp->slaveoffset;
for (bitpos = 0; (bitpos < bitsize); bitpos++) {
if (slavebits[bitpos])
slavep[bitpos] &= ~slavebits[bitpos];
}
}
}
/*****************************************************************************/
/*
* Driver poll routine. This routine polls the boards in use and passes
* messages back up to host when necessary. This is actually very
* CPU efficient, since we will always have the kernel poll clock, it
* adds only a few cycles when idle (since board service can be
* determined very easily), but when loaded generates no interrupts
* (with their expensive associated context change).
*/
static void stli_poll(unsigned long arg)
{
volatile cdkhdr_t *hdrp;
stlibrd_t *brdp;
int brdnr;
stli_timerlist.expires = STLI_TIMEOUT;
add_timer(&stli_timerlist);
/*
* Check each board and do any servicing required.
*/
for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) {
brdp = stli_brds[brdnr];
if (brdp == (stlibrd_t *) NULL)
continue;
if ((brdp->state & BST_STARTED) == 0)
continue;
EBRDENABLE(brdp);
hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
if (hdrp->hostreq)
stli_brdpoll(brdp, hdrp);
EBRDDISABLE(brdp);
}
}
/*****************************************************************************/
/*
* Translate the termios settings into the port setting structure of
* the slave.
*/
static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp)
{
#if DEBUG
printk(KERN_DEBUG "stli_mkasyport(portp=%x,pp=%x,tiosp=%d)n",
(int) portp, (int) pp, (int) tiosp);
#endif
memset(pp, 0, sizeof(asyport_t));
/*
* Start of by setting the baud, char size, parity and stop bit info.
*/
pp->baudout = tiosp->c_cflag & CBAUD;
if (pp->baudout & CBAUDEX) {
pp->baudout &= ~CBAUDEX;
if ((pp->baudout < 1) || (pp->baudout > 4))
tiosp->c_cflag &= ~CBAUDEX;
else
pp->baudout += 15;
}
pp->baudout = stli_baudrates[pp->baudout];
if ((tiosp->c_cflag & CBAUD) == B38400) {
if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
pp->baudout = 57600;
else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
pp->baudout = 115200;
else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
pp->baudout = 230400;
else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
pp->baudout = 460800;
else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)
pp->baudout = (portp->baud_base / portp->custom_divisor);
}
if (pp->baudout > STL_MAXBAUD)
pp->baudout = STL_MAXBAUD;
pp->baudin = pp->baudout;
switch (tiosp->c_cflag & CSIZE) {
case CS5:
pp->csize = 5;
break;
case CS6:
pp->csize = 6;
break;
case CS7:
pp->csize = 7;
break;
default:
pp->csize = 8;
break;
}
if (tiosp->c_cflag & CSTOPB)
pp->stopbs = PT_STOP2;
else
pp->stopbs = PT_STOP1;
if (tiosp->c_cflag & PARENB) {
if (tiosp->c_cflag & PARODD)
pp->parity = PT_ODDPARITY;
else
pp->parity = PT_EVENPARITY;
} else {
pp->parity = PT_NOPARITY;
}
/*
* Set up any flow control options enabled.
*/
if (tiosp->c_iflag & IXON) {
pp->flow |= F_IXON;
if (tiosp->c_iflag & IXANY)
pp->flow |= F_IXANY;
}
if (tiosp->c_cflag & CRTSCTS)
pp->flow |= (F_RTSFLOW | F_CTSFLOW);
pp->startin = tiosp->c_cc[VSTART];
pp->stopin = tiosp->c_cc[VSTOP];
pp->startout = tiosp->c_cc[VSTART];
pp->stopout = tiosp->c_cc[VSTOP];
/*
* Set up the RX char marking mask with those RX error types we must
* catch. We can get the slave to help us out a little here, it will
* ignore parity errors and breaks for us, and mark parity errors in
* the data stream.
*/
if (tiosp->c_iflag & IGNPAR)
pp->iflag |= FI_IGNRXERRS;
if (tiosp->c_iflag & IGNBRK)
pp->iflag |= FI_IGNBREAK;
portp->rxmarkmsk = 0;
if (tiosp->c_iflag & (INPCK | PARMRK))
pp->iflag |= FI_1MARKRXERRS;
if (tiosp->c_iflag & BRKINT)
portp->rxmarkmsk |= BRKINT;
/*
* Set up clocal processing as required.
*/
if (tiosp->c_cflag & CLOCAL)
portp->flags &= ~ASYNC_CHECK_CD;
else
portp->flags |= ASYNC_CHECK_CD;
/*
* Transfer any persistent flags into the asyport structure.
*/
pp->pflag = (portp->pflag & 0xffff);
pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0;
pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0;
pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0;
}
/*****************************************************************************/
/*
* Construct a slave signals structure for setting the DTR and RTS
* signals as specified.
*/
static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts)
{
#if DEBUG
printk(KERN_DEBUG "stli_mkasysigs(sp=%x,dtr=%d,rts=%d)n",
(int) sp, dtr, rts);
#endif
memset(sp, 0, sizeof(asysigs_t));
if (dtr >= 0) {
sp->signal |= SG_DTR;
sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0);
}
if (rts >= 0) {
sp->signal |= SG_RTS;
sp->sigvalue |= ((rts > 0) ? SG_RTS : 0);
}
}
/*****************************************************************************/
/*
* Convert the signals returned from the slave into a local TIOCM type
* signals value. We keep them locally in TIOCM format.
*/
static long stli_mktiocm(unsigned long sigvalue)
{
long tiocm;
#if DEBUG
printk(KERN_DEBUG "stli_mktiocm(sigvalue=%x)n", (int) sigvalue);
#endif
tiocm = 0;
tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0);
tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0);
tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0);
tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0);
tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0);
tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0);
return(tiocm);
}
/*****************************************************************************/
/*
* All panels and ports actually attached have been worked out. All
* we need to do here is set up the appropriate per port data structures.
*/
static inline int stli_initports(stlibrd_t *brdp)
{
stliport_t *portp;
int i, panelnr, panelport;
#if DEBUG
printk(KERN_DEBUG "stli_initports(brdp=%x)n", (int) brdp);
#endif
for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) {
portp = (stliport_t *) stli_memalloc(sizeof(stliport_t));
if (portp == (stliport_t *) NULL) {
printk("STALLION: failed to allocate port structuren");
continue;
}
memset(portp, 0, sizeof(stliport_t));
portp->magic = STLI_PORTMAGIC;
portp->portnr = i;
portp->brdnr = brdp->brdnr;
portp->panelnr = panelnr;
portp->baud_base = STL_BAUDBASE;
portp->close_delay = STL_CLOSEDELAY;
portp->closing_wait = 30 * HZ;
portp->tqhangup.routine = stli_dohangup;
portp->tqhangup.data = portp;
init_waitqueue_head(&portp->open_wait);
init_waitqueue_head(&portp->close_wait);
init_waitqueue_head(&portp->raw_wait);
portp->normaltermios = stli_deftermios;
portp->callouttermios = stli_deftermios;
panelport++;
if (panelport >= brdp->panels[panelnr]) {
panelport = 0;
panelnr++;
}
brdp->ports[i] = portp;
}
return(0);
}
/*****************************************************************************/
/*
* All the following routines are board specific hardware operations.
*/
static void stli_ecpinit(stlibrd_t *brdp)
{
unsigned long memconf;
#if DEBUG
printk(KERN_DEBUG "stli_ecpinit(brdp=%d)n", (int) brdp);
#endif
outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
udelay(10);
outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
udelay(100);
memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT;
outb(memconf, (brdp->iobase + ECP_ATMEMAR));
}
/*****************************************************************************/
static void stli_ecpenable(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_ecpenable(brdp=%x)n", (int) brdp);
#endif
outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR));
}
/*****************************************************************************/
static void stli_ecpdisable(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_ecpdisable(brdp=%x)n", (int) brdp);
#endif
outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
}
/*****************************************************************************/
static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
{
void *ptr;
unsigned char val;
#if DEBUG
printk(KERN_DEBUG "stli_ecpgetmemptr(brdp=%x,offset=%x)n", (int) brdp,
(int) offset);
#endif
if (offset > brdp->memsize) {
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%dn",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = 0;
val = 0;
} else {
ptr = brdp->membase + (offset % ECP_ATPAGESIZE);
val = (unsigned char) (offset / ECP_ATPAGESIZE);
}
outb(val, (brdp->iobase + ECP_ATMEMPR));
return(ptr);
}
/*****************************************************************************/
static void stli_ecpreset(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_ecpreset(brdp=%x)n", (int) brdp);
#endif
outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR));
udelay(10);
outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR));
udelay(500);
}
/*****************************************************************************/
static void stli_ecpintr(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_ecpintr(brdp=%x)n", (int) brdp);
#endif
outb(0x1, brdp->iobase);
}
/*****************************************************************************/
/*
* The following set of functions act on ECP EISA boards.
*/
static void stli_ecpeiinit(stlibrd_t *brdp)
{
unsigned long memconf;
#if DEBUG
printk(KERN_DEBUG "stli_ecpeiinit(brdp=%x)n", (int) brdp);
#endif
outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
udelay(10);
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
udelay(500);
memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL;
outb(memconf, (brdp->iobase + ECP_EIMEMARL));
memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH;
outb(memconf, (brdp->iobase + ECP_EIMEMARH));
}
/*****************************************************************************/
static void stli_ecpeienable(stlibrd_t *brdp)
{
outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR));
}
/*****************************************************************************/
static void stli_ecpeidisable(stlibrd_t *brdp)
{
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
}
/*****************************************************************************/
static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
{
void *ptr;
unsigned char val;
#if DEBUG
printk(KERN_DEBUG "stli_ecpeigetmemptr(brdp=%x,offset=%x,line=%d)n",
(int) brdp, (int) offset, line);
#endif
if (offset > brdp->memsize) {
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%dn",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = 0;
val = 0;
} else {
ptr = brdp->membase + (offset % ECP_EIPAGESIZE);
if (offset < ECP_EIPAGESIZE)
val = ECP_EIENABLE;
else
val = ECP_EIENABLE | 0x40;
}
outb(val, (brdp->iobase + ECP_EICONFR));
return(ptr);
}
/*****************************************************************************/
static void stli_ecpeireset(stlibrd_t *brdp)
{
outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
udelay(10);
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
udelay(500);
}
/*****************************************************************************/
/*
* The following set of functions act on ECP MCA boards.
*/
static void stli_ecpmcenable(stlibrd_t *brdp)
{
outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR));
}
/*****************************************************************************/
static void stli_ecpmcdisable(stlibrd_t *brdp)
{
outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
}
/*****************************************************************************/
static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
{
void *ptr;
unsigned char val;
if (offset > brdp->memsize) {
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%dn",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = 0;
val = 0;
} else {
ptr = brdp->membase + (offset % ECP_MCPAGESIZE);
val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE;
}
outb(val, (brdp->iobase + ECP_MCCONFR));
return(ptr);
}
/*****************************************************************************/
static void stli_ecpmcreset(stlibrd_t *brdp)
{
outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR));
udelay(10);
outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR));
udelay(500);
}
/*****************************************************************************/
/*
* The following set of functions act on ECP PCI boards.
*/
static void stli_ecppciinit(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_ecppciinit(brdp=%x)n", (int) brdp);
#endif
outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
udelay(10);
outb(0, (brdp->iobase + ECP_PCICONFR));
udelay(500);
}
/*****************************************************************************/
static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
{
void *ptr;
unsigned char val;
#if DEBUG
printk(KERN_DEBUG "stli_ecppcigetmemptr(brdp=%x,offset=%x,line=%d)n",
(int) brdp, (int) offset, line);
#endif
if (offset > brdp->memsize) {
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
"range at line=%d(%d), board=%dn",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = 0;
val = 0;
} else {
ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
val = (offset / ECP_PCIPAGESIZE) << 1;
}
outb(val, (brdp->iobase + ECP_PCICONFR));
return(ptr);
}
/*****************************************************************************/
static void stli_ecppcireset(stlibrd_t *brdp)
{
outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
udelay(10);
outb(0, (brdp->iobase + ECP_PCICONFR));
udelay(500);
}
/*****************************************************************************/
/*
* The following routines act on ONboards.
*/
static void stli_onbinit(stlibrd_t *brdp)
{
unsigned long memconf;
#if DEBUG
printk(KERN_DEBUG "stli_onbinit(brdp=%d)n", (int) brdp);
#endif
outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
udelay(10);
outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
mdelay(1000);
memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT;
outb(memconf, (brdp->iobase + ONB_ATMEMAR));
outb(0x1, brdp->iobase);
mdelay(1);
}
/*****************************************************************************/
static void stli_onbenable(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_onbenable(brdp=%x)n", (int) brdp);
#endif
outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR));
}
/*****************************************************************************/
static void stli_onbdisable(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_onbdisable(brdp=%x)n", (int) brdp);
#endif
outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR));
}
/*****************************************************************************/
static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
{
void *ptr;
#if DEBUG
printk(KERN_DEBUG "stli_onbgetmemptr(brdp=%x,offset=%x)n", (int) brdp,
(int) offset);
#endif
if (offset > brdp->memsize) {
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%dn",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = 0;
} else {
ptr = brdp->membase + (offset % ONB_ATPAGESIZE);
}
return(ptr);
}
/*****************************************************************************/
static void stli_onbreset(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_onbreset(brdp=%x)n", (int) brdp);
#endif
outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR));
udelay(10);
outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR));
mdelay(1000);
}
/*****************************************************************************/
/*
* The following routines act on ONboard EISA.
*/
static void stli_onbeinit(stlibrd_t *brdp)
{
unsigned long memconf;
#if DEBUG
printk(KERN_DEBUG "stli_onbeinit(brdp=%d)n", (int) brdp);
#endif
outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
udelay(10);
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
mdelay(1000);
memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL;
outb(memconf, (brdp->iobase + ONB_EIMEMARL));
memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH;
outb(memconf, (brdp->iobase + ONB_EIMEMARH));
outb(0x1, brdp->iobase);
mdelay(1);
}
/*****************************************************************************/
static void stli_onbeenable(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_onbeenable(brdp=%x)n", (int) brdp);
#endif
outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR));
}
/*****************************************************************************/
static void stli_onbedisable(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_onbedisable(brdp=%x)n", (int) brdp);
#endif
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
}
/*****************************************************************************/
static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
{
void *ptr;
unsigned char val;
#if DEBUG
printk(KERN_DEBUG "stli_onbegetmemptr(brdp=%x,offset=%x,line=%d)n",
(int) brdp, (int) offset, line);
#endif
if (offset > brdp->memsize) {
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%dn",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = 0;
val = 0;
} else {
ptr = brdp->membase + (offset % ONB_EIPAGESIZE);
if (offset < ONB_EIPAGESIZE)
val = ONB_EIENABLE;
else
val = ONB_EIENABLE | 0x40;
}
outb(val, (brdp->iobase + ONB_EICONFR));
return(ptr);
}
/*****************************************************************************/
static void stli_onbereset(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_ERR "stli_onbereset(brdp=%x)n", (int) brdp);
#endif
outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
udelay(10);
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
mdelay(1000);
}
/*****************************************************************************/
/*
* The following routines act on Brumby boards.
*/
static void stli_bbyinit(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_ERR "stli_bbyinit(brdp=%d)n", (int) brdp);
#endif
outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
udelay(10);
outb(0, (brdp->iobase + BBY_ATCONFR));
mdelay(1000);
outb(0x1, brdp->iobase);
mdelay(1);
}
/*****************************************************************************/
static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
{
void *ptr;
unsigned char val;
#if DEBUG
printk(KERN_ERR "stli_bbygetmemptr(brdp=%x,offset=%x)n", (int) brdp,
(int) offset);
#endif
if (offset > brdp->memsize) {
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%dn",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = 0;
val = 0;
} else {
ptr = brdp->membase + (offset % BBY_PAGESIZE);
val = (unsigned char) (offset / BBY_PAGESIZE);
}
outb(val, (brdp->iobase + BBY_ATCONFR));
return(ptr);
}
/*****************************************************************************/
static void stli_bbyreset(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_bbyreset(brdp=%x)n", (int) brdp);
#endif
outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR));
udelay(10);
outb(0, (brdp->iobase + BBY_ATCONFR));
mdelay(1000);
}
/*****************************************************************************/
/*
* The following routines act on original old Stallion boards.
*/
static void stli_stalinit(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_stalinit(brdp=%d)n", (int) brdp);
#endif
outb(0x1, brdp->iobase);
mdelay(1000);
}
/*****************************************************************************/
static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
{
void *ptr;
#if DEBUG
printk(KERN_DEBUG "stli_stalgetmemptr(brdp=%x,offset=%x)n", (int) brdp,
(int) offset);
#endif
if (offset > brdp->memsize) {
printk(KERN_ERR "STALLION: shared memory pointer=%x out of "
"range at line=%d(%d), brd=%dn",
(int) offset, line, __LINE__, brdp->brdnr);
ptr = 0;
} else {
ptr = brdp->membase + (offset % STAL_PAGESIZE);
}
return(ptr);
}
/*****************************************************************************/
static void stli_stalreset(stlibrd_t *brdp)
{
volatile unsigned long *vecp;
#if DEBUG
printk(KERN_DEBUG "stli_stalreset(brdp=%x)n", (int) brdp);
#endif
vecp = (volatile unsigned long *) (brdp->membase + 0x30);
*vecp = 0xffff0000;
outb(0, brdp->iobase);
mdelay(1000);
}
/*****************************************************************************/
/*
* Try to find an ECP board and initialize it. This handles only ECP
* board types.
*/
static inline int stli_initecp(stlibrd_t *brdp)
{
cdkecpsig_t sig;
cdkecpsig_t *sigsp;
unsigned int status, nxtid;
char *name;
int panelnr, nrports;
#if DEBUG
printk(KERN_DEBUG "stli_initecp(brdp=%x)n", (int) brdp);
#endif
/*
* Do a basic sanity check on the IO and memory addresses.
*/
if ((brdp->iobase == 0) || (brdp->memaddr == 0))
return(-ENODEV);
brdp->iosize = ECP_IOSIZE;
if (check_region(brdp->iobase, brdp->iosize))
printk(KERN_ERR "STALLION: Warning, board %d I/O address %x "
"conflicts with another devicen",
brdp->brdnr, brdp->iobase);
/*
* Based on the specific board type setup the common vars to access
* and enable shared memory. Set all board specific information now
* as well.
*/
switch (brdp->brdtype) {
case BRD_ECP:
brdp->membase = (void *) brdp->memaddr;
brdp->memsize = ECP_MEMSIZE;
brdp->pagesize = ECP_ATPAGESIZE;
brdp->init = stli_ecpinit;
brdp->enable = stli_ecpenable;
brdp->reenable = stli_ecpenable;
brdp->disable = stli_ecpdisable;
brdp->getmemptr = stli_ecpgetmemptr;
brdp->intr = stli_ecpintr;
brdp->reset = stli_ecpreset;
name = "serial(EC8/64)";
break;
case BRD_ECPE:
brdp->membase = (void *) brdp->memaddr;
brdp->memsize = ECP_MEMSIZE;
brdp->pagesize = ECP_EIPAGESIZE;
brdp->init = stli_ecpeiinit;
brdp->enable = stli_ecpeienable;
brdp->reenable = stli_ecpeienable;
brdp->disable = stli_ecpeidisable;
brdp->getmemptr = stli_ecpeigetmemptr;
brdp->intr = stli_ecpintr;
brdp->reset = stli_ecpeireset;
name = "serial(EC8/64-EI)";
break;
case BRD_ECPMC:
brdp->membase = (void *) brdp->memaddr;
brdp->memsize = ECP_MEMSIZE;
brdp->pagesize = ECP_MCPAGESIZE;
brdp->init = NULL;
brdp->enable = stli_ecpmcenable;
brdp->reenable = stli_ecpmcenable;
brdp->disable = stli_ecpmcdisable;
brdp->getmemptr = stli_ecpmcgetmemptr;
brdp->intr = stli_ecpintr;
brdp->reset = stli_ecpmcreset;
name = "serial(EC8/64-MCA)";
break;
case BRD_ECPPCI:
brdp->membase = (void *) brdp->memaddr;
brdp->memsize = ECP_PCIMEMSIZE;
brdp->pagesize = ECP_PCIPAGESIZE;
brdp->init = stli_ecppciinit;
brdp->enable = NULL;
brdp->reenable = NULL;
brdp->disable = NULL;
brdp->getmemptr = stli_ecppcigetmemptr;
brdp->intr = stli_ecpintr;
brdp->reset = stli_ecppcireset;
name = "serial(EC/RA-PCI)";
break;
default:
return(-EINVAL);
}
/*
* The per-board operations structure is all set up, so now let's go
* and get the board operational. Firstly initialize board configuration
* registers. Set the memory mapping info so we can get at the boards
* shared memory.
*/
EBRDINIT(brdp);
brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
if (brdp->membase == (void *) NULL)
return(-ENOMEM);
/*
* Now that all specific code is set up, enable the shared memory and
* look for the a signature area that will tell us exactly what board
* this is, and what it is connected to it.
*/
EBRDENABLE(brdp);
sigsp = (cdkecpsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
memcpy(&sig, sigsp, sizeof(cdkecpsig_t));
EBRDDISABLE(brdp);
#if 0
printk("%s(%d): sig-> magic=%x rom=%x panel=%x,%x,%x,%x,%x,%x,%x,%xn",
__FILE__, __LINE__, (int) sig.magic, sig.romver, sig.panelid[0],
(int) sig.panelid[1], (int) sig.panelid[2],
(int) sig.panelid[3], (int) sig.panelid[4],
(int) sig.panelid[5], (int) sig.panelid[6],
(int) sig.panelid[7]);
#endif
if (sig.magic != ECP_MAGIC)
return(-ENODEV);
/*
* Scan through the signature looking at the panels connected to the
* board. Calculate the total number of ports as we go.
*/
for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) {
status = sig.panelid[nxtid];
if ((status & ECH_PNLIDMASK) != nxtid)
break;
brdp->panelids[panelnr] = status;
nrports = (status & ECH_PNL16PORT) ? 16 : 8;
if ((nrports == 16) && ((status & ECH_PNLXPID) == 0))
nxtid++;
brdp->panels[panelnr] = nrports;
brdp->nrports += nrports;
nxtid++;
brdp->nrpanels++;
}
request_region(brdp->iobase, brdp->iosize, name);
brdp->state |= BST_FOUND;
return(0);
}
/*****************************************************************************/
/*
* Try to find an ONboard, Brumby or Stallion board and initialize it.
* This handles only these board types.
*/
static inline int stli_initonb(stlibrd_t *brdp)
{
cdkonbsig_t sig;
cdkonbsig_t *sigsp;
char *name;
int i;
#if DEBUG
printk(KERN_DEBUG "stli_initonb(brdp=%x)n", (int) brdp);
#endif
/*
* Do a basic sanity check on the IO and memory addresses.
*/
if ((brdp->iobase == 0) || (brdp->memaddr == 0))
return(-ENODEV);
brdp->iosize = ONB_IOSIZE;
if (check_region(brdp->iobase, brdp->iosize))
printk(KERN_ERR "STALLION: Warning, board %d I/O address %x "
"conflicts with another devicen",
brdp->brdnr, brdp->iobase);
/*
* Based on the specific board type setup the common vars to access
* and enable shared memory. Set all board specific information now
* as well.
*/
switch (brdp->brdtype) {
case BRD_ONBOARD:
case BRD_ONBOARD32:
case BRD_ONBOARD2:
case BRD_ONBOARD2_32:
case BRD_ONBOARDRS:
brdp->membase = (void *) brdp->memaddr;
brdp->memsize = ONB_MEMSIZE;
brdp->pagesize = ONB_ATPAGESIZE;
brdp->init = stli_onbinit;
brdp->enable = stli_onbenable;
brdp->reenable = stli_onbenable;
brdp->disable = stli_onbdisable;
brdp->getmemptr = stli_onbgetmemptr;
brdp->intr = stli_ecpintr;
brdp->reset = stli_onbreset;
if (brdp->memaddr > 0x100000)
brdp->enabval = ONB_MEMENABHI;
else
brdp->enabval = ONB_MEMENABLO;
name = "serial(ONBoard)";
break;
case BRD_ONBOARDE:
brdp->membase = (void *) brdp->memaddr;
brdp->memsize = ONB_EIMEMSIZE;
brdp->pagesize = ONB_EIPAGESIZE;
brdp->init = stli_onbeinit;
brdp->enable = stli_onbeenable;
brdp->reenable = stli_onbeenable;
brdp->disable = stli_onbedisable;
brdp->getmemptr = stli_onbegetmemptr;
brdp->intr = stli_ecpintr;
brdp->reset = stli_onbereset;
name = "serial(ONBoard/E)";
break;
case BRD_BRUMBY4:
case BRD_BRUMBY8:
case BRD_BRUMBY16:
brdp->membase = (void *) brdp->memaddr;
brdp->memsize = BBY_MEMSIZE;
brdp->pagesize = BBY_PAGESIZE;
brdp->init = stli_bbyinit;
brdp->enable = NULL;
brdp->reenable = NULL;
brdp->disable = NULL;
brdp->getmemptr = stli_bbygetmemptr;
brdp->intr = stli_ecpintr;
brdp->reset = stli_bbyreset;
name = "serial(Brumby)";
break;
case BRD_STALLION:
brdp->membase = (void *) brdp->memaddr;
brdp->memsize = STAL_MEMSIZE;
brdp->pagesize = STAL_PAGESIZE;
brdp->init = stli_stalinit;
brdp->enable = NULL;
brdp->reenable = NULL;
brdp->disable = NULL;
brdp->getmemptr = stli_stalgetmemptr;
brdp->intr = stli_ecpintr;
brdp->reset = stli_stalreset;
name = "serial(Stallion)";
break;
default:
return(-EINVAL);
}
/*
* The per-board operations structure is all set up, so now let's go
* and get the board operational. Firstly initialize board configuration
* registers. Set the memory mapping info so we can get at the boards
* shared memory.
*/
EBRDINIT(brdp);
brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
if (brdp->membase == (void *) NULL)
return(-ENOMEM);
/*
* Now that all specific code is set up, enable the shared memory and
* look for the a signature area that will tell us exactly what board
* this is, and how many ports.
*/
EBRDENABLE(brdp);
sigsp = (cdkonbsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR);
memcpy(&sig, sigsp, sizeof(cdkonbsig_t));
EBRDDISABLE(brdp);
#if 0
printk("%s(%d): sig-> magic=%x:%x:%x:%x romver=%x amask=%x:%x:%xn",
__FILE__, __LINE__, sig.magic0, sig.magic1, sig.magic2,
sig.magic3, sig.romver, sig.amask0, sig.amask1, sig.amask2);
#endif
if ((sig.magic0 != ONB_MAGIC0) || (sig.magic1 != ONB_MAGIC1) ||
(sig.magic2 != ONB_MAGIC2) || (sig.magic3 != ONB_MAGIC3))
return(-ENODEV);
/*
* Scan through the signature alive mask and calculate how many ports
* there are on this board.
*/
brdp->nrpanels = 1;
if (sig.amask1) {
brdp->nrports = 32;
} else {
for (i = 0; (i < 16); i++) {
if (((sig.amask0 << i) & 0x8000) == 0)
break;
}
brdp->nrports = i;
}
brdp->panels[0] = brdp->nrports;
request_region(brdp->iobase, brdp->iosize, name);
brdp->state |= BST_FOUND;
return(0);
}
/*****************************************************************************/
/*
* Start up a running board. This routine is only called after the
* code has been down loaded to the board and is operational. It will
* read in the memory map, and get the show on the road...
*/
static int stli_startbrd(stlibrd_t *brdp)
{
volatile cdkhdr_t *hdrp;
volatile cdkmem_t *memp;
volatile cdkasy_t *ap;
unsigned long flags;
stliport_t *portp;
int portnr, nrdevs, i, rc;
#if DEBUG
printk(KERN_DEBUG "stli_startbrd(brdp=%x)n", (int) brdp);
#endif
rc = 0;
save_flags(flags);
cli();
EBRDENABLE(brdp);
hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR);
nrdevs = hdrp->nrdevs;
#if 0
printk("%s(%d): CDK version %d.%d.%d --> "
"nrdevs=%d memp=%x hostp=%x slavep=%xn",
__FILE__, __LINE__, hdrp->ver_release, hdrp->ver_modification,
hdrp->ver_fix, nrdevs, (int) hdrp->memp, (int) hdrp->hostp,
(int) hdrp->slavep);
#endif
if (nrdevs < (brdp->nrports + 1)) {
printk(KERN_ERR "STALLION: slave failed to allocate memory for "
"all devices, devices=%dn", nrdevs);
brdp->nrports = nrdevs - 1;
}
brdp->nrdevs = nrdevs;
brdp->hostoffset = hdrp->hostp - CDK_CDKADDR;
brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR;
brdp->bitsize = (nrdevs + 7) / 8;
memp = (volatile cdkmem_t *) hdrp->memp;
if (((unsigned long) memp) > brdp->memsize) {
printk(KERN_ERR "STALLION: corrupted shared memory region?n");
rc = -EIO;
goto stli_donestartup;
}
memp = (volatile cdkmem_t *) EBRDGETMEMPTR(brdp, (unsigned long) memp);
if (memp->dtype != TYP_ASYNCTRL) {
printk(KERN_ERR "STALLION: no slave control device foundn");
goto stli_donestartup;
}
memp++;
/*
* Cycle through memory allocation of each port. We are guaranteed to
* have all ports inside the first page of slave window, so no need to
* change pages while reading memory map.
*/
for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) {
if (memp->dtype != TYP_ASYNC)
break;
portp = brdp->ports[portnr];
if (portp == (stliport_t *) NULL)
break;
portp->devnr = i;
portp->addr = memp->offset;
portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs));
portp->portidx = (unsigned char) (i / 8);
portp->portbit = (unsigned char) (0x1 << (i % 8));
}
hdrp->slavereq = 0xff;
/*
* For each port setup a local copy of the RX and TX buffer offsets
* and sizes. We do this separate from the above, because we need to
* move the shared memory page...
*/
for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) {
portp = brdp->ports[portnr];
if (portp == (stliport_t *) NULL)
break;
if (portp->addr == 0)
break;
ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr);
if (ap != (volatile cdkasy_t *) NULL) {
portp->rxsize = ap->rxq.size;
portp->txsize = ap->txq.size;
portp->rxoffset = ap->rxq.offset;
portp->txoffset = ap->txq.offset;
}
}
stli_donestartup:
EBRDDISABLE(brdp);
restore_flags(flags);
if (rc == 0)
brdp->state |= BST_STARTED;
if (! stli_timeron) {
stli_timeron++;
stli_timerlist.expires = STLI_TIMEOUT;
add_timer(&stli_timerlist);
}
return(rc);
}
/*****************************************************************************/
/*
* Probe and initialize the specified board.
*/
static int __init stli_brdinit(stlibrd_t *brdp)
{
#if DEBUG
printk(KERN_DEBUG "stli_brdinit(brdp=%x)n", (int) brdp);
#endif
stli_brds[brdp->brdnr] = brdp;
switch (brdp->brdtype) {
case BRD_ECP:
case BRD_ECPE:
case BRD_ECPMC:
case BRD_ECPPCI:
stli_initecp(brdp);
break;
case BRD_ONBOARD:
case BRD_ONBOARDE:
case BRD_ONBOARD2:
case BRD_ONBOARD32:
case BRD_ONBOARD2_32:
case BRD_ONBOARDRS:
case BRD_BRUMBY4:
case BRD_BRUMBY8:
case BRD_BRUMBY16:
case BRD_STALLION:
stli_initonb(brdp);
break;
case BRD_EASYIO:
case BRD_ECH:
case BRD_ECHMC:
case BRD_ECHPCI:
printk(KERN_ERR "STALLION: %s board type not supported in "
"this drivern", stli_brdnames[brdp->brdtype]);
return(ENODEV);
default:
printk(KERN_ERR "STALLION: board=%d is unknown board "
"type=%dn", brdp->brdnr, brdp->brdtype);
return(ENODEV);
}
if ((brdp->state & BST_FOUND) == 0) {
printk(KERN_ERR "STALLION: %s board not found, board=%d "
"io=%x mem=%xn",
stli_brdnames[brdp->brdtype], brdp->brdnr,
brdp->iobase, (int) brdp->memaddr);
return(ENODEV);
}
stli_initports(brdp);
printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x "
"nrpanels=%d nrports=%dn", stli_brdnames[brdp->brdtype],
brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
brdp->nrpanels, brdp->nrports);
return(0);
}
/*****************************************************************************/
/*
* Probe around trying to find where the EISA boards shared memory
* might be. This is a bit if hack, but it is the best we can do.
*/
static inline int stli_eisamemprobe(stlibrd_t *brdp)
{
cdkecpsig_t ecpsig, *ecpsigp;
cdkonbsig_t onbsig, *onbsigp;
int i, foundit;
#if DEBUG
printk(KERN_DEBUG "stli_eisamemprobe(brdp=%x)n", (int) brdp);
#endif
/*
* First up we reset the board, to get it into a known state. There
* is only 2 board types here we need to worry about. Don;t use the
* standard board init routine here, it programs up the shared
* memory address, and we don't know it yet...
*/
if (brdp->brdtype == BRD_ECPE) {
outb(0x1, (brdp->iobase + ECP_EIBRDENAB));
outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR));
udelay(10);
outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR));
udelay(500);
stli_ecpeienable(brdp);
} else if (brdp->brdtype == BRD_ONBOARDE) {
outb(0x1, (brdp->iobase + ONB_EIBRDENAB));
outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR));
udelay(10);
outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR));
mdelay(100);
outb(0x1, brdp->iobase);
mdelay(1);
stli_onbeenable(brdp);
} else {
return(-ENODEV);
}
foundit = 0;
brdp->memsize = ECP_MEMSIZE;
/*
* Board shared memory is enabled, so now we have a poke around and
* see if we can find it.
*/
for (i = 0; (i < stli_eisamempsize); i++) {
brdp->memaddr = stli_eisamemprobeaddrs[i];
brdp->membase = (void *) brdp->memaddr;
brdp->membase = ioremap(brdp->memaddr, brdp->memsize);
if (brdp->membase == (void *) NULL)
continue;
if (brdp->brdtype == BRD_ECPE) {
ecpsigp = (cdkecpsig_t *) stli_ecpeigetmemptr(brdp,
CDK_SIGADDR, __LINE__);
memcpy(&ecpsig, ecpsigp, sizeof(cdkecpsig_t));
if (ecpsig.magic == ECP_MAGIC)
foundit = 1;
} else {
onbsigp = (cdkonbsig_t *) stli_onbegetmemptr(brdp,
CDK_SIGADDR, __LINE__);
memcpy(&onbsig, onbsigp, sizeof(cdkonbsig_t));
if ((onbsig.magic0 == ONB_MAGIC0) &&
(onbsig.magic1 == ONB_MAGIC1) &&
(onbsig.magic2 == ONB_MAGIC2) &&
(onbsig.magic3 == ONB_MAGIC3))
foundit = 1;
}
iounmap(brdp->membase);
if (foundit)
break;
}
/*
* Regardless of whether we found the shared memory or not we must
* disable the region. After that return success or failure.
*/
if (brdp->brdtype == BRD_ECPE)
stli_ecpeidisable(brdp);
else
stli_onbedisable(brdp);
if (! foundit) {
brdp->memaddr = 0;
brdp->membase = 0;
printk(KERN_ERR "STALLION: failed to probe shared memory "
"region for %s in EISA slot=%dn",
stli_brdnames[brdp->brdtype], (brdp->iobase >> 12));
return(-ENODEV);
}
return(0);
}
/*****************************************************************************/
/*
* Probe around and try to find any EISA boards in system. The biggest
* problem here is finding out what memory address is associated with
* an EISA board after it is found. The registers of the ECPE and
* ONboardE are not readable - so we can't read them from there. We
* don't have access to the EISA CMOS (or EISA BIOS) so we don't
* actually have any way to find out the real value. The best we can
* do is go probing around in the usual places hoping we can find it.
*/
static inline int stli_findeisabrds()
{
stlibrd_t *brdp;
unsigned int iobase, eid;
int i;
#if DEBUG
printk(KERN_DEBUG "stli_findeisabrds()n");
#endif
/*
* Firstly check if this is an EISA system. Do this by probing for
* the system board EISA ID. If this is not an EISA system then
* don't bother going any further!
*/
outb(0xff, 0xc80);
if (inb(0xc80) == 0xff)
return(0);
/*
* Looks like an EISA system, so go searching for EISA boards.
*/
for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) {
outb(0xff, (iobase + 0xc80));
eid = inb(iobase + 0xc80);
eid |= inb(iobase + 0xc81) << 8;
if (eid != STL_EISAID)
continue;
/*
* We have found a board. Need to check if this board was
* statically configured already (just in case!).
*/
for (i = 0; (i < STL_MAXBRDS); i++) {
brdp = stli_brds[i];
if (brdp == (stlibrd_t *) NULL)
continue;
if (brdp->iobase == iobase)
break;
}
if (i < STL_MAXBRDS)
continue;
/*
* We have found a Stallion board and it is not configured already.
* Allocate a board structure and initialize it.
*/
if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
return(-ENOMEM);
if ((brdp->brdnr = stli_getbrdnr()) < 0)
return(-ENOMEM);
eid = inb(iobase + 0xc82);
if (eid == ECP_EISAID)
brdp->brdtype = BRD_ECPE;
else if (eid == ONB_EISAID)
brdp->brdtype = BRD_ONBOARDE;
else
brdp->brdtype = BRD_UNKNOWN;
brdp->iobase = iobase;
outb(0x1, (iobase + 0xc84));
if (stli_eisamemprobe(brdp))
outb(0, (iobase + 0xc84));
stli_brdinit(brdp);
}
return(0);
}
/*****************************************************************************/
/*
* Find the next available board number that is free.
*/
static inline int stli_getbrdnr()
{
int i;
for (i = 0; (i < STL_MAXBRDS); i++) {
if (stli_brds[i] == (stlibrd_t *) NULL) {
if (i >= stli_nrbrds)
stli_nrbrds = i + 1;
return(i);
}
}
return(-1);
}
/*****************************************************************************/
#ifdef CONFIG_PCI
/*
* We have a Stallion board. Allocate a board structure and
* initialize it. Read its IO and MEMORY resources from PCI
* configuration space.
*/
static inline int stli_initpcibrd(int brdtype, struct pci_dev *devp)
{
stlibrd_t *brdp;
#if DEBUG
printk(KERN_DEBUG "stli_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)n",
brdtype, dev->bus->number, dev->devfn);
#endif
if (pci_enable_device(devp))
return(-EIO);
if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
return(-ENOMEM);
if ((brdp->brdnr = stli_getbrdnr()) < 0) {
printk(KERN_INFO "STALLION: too many boards found, "
"maximum supported %dn", STL_MAXBRDS);
return(0);
}
brdp->brdtype = brdtype;
#if DEBUG
printk(KERN_DEBUG "%s(%d): BAR[]=%lx,%lx,%lx,%lxn", __FILE__, __LINE__,
pci_resource_start(devp, 0),
pci_resource_start(devp, 1),
pci_resource_start(devp, 2),
pci_resource_start(devp, 3));
#endif
/*
* We have all resources from the board, so lets setup the actual
* board structure now.
*/
brdp->iobase = pci_resource_start(devp, 3);
brdp->memaddr = pci_resource_start(devp, 2);
stli_brdinit(brdp);
return(0);
}
/*****************************************************************************/
/*
* Find all Stallion PCI boards that might be installed. Initialize each
* one as it is found.
*/
static inline int stli_findpcibrds()
{
struct pci_dev *dev = NULL;
int rc;
#if DEBUG
printk("stli_findpcibrds()n");
#endif
if (! pci_present())
return(0);
while ((dev = pci_find_device(PCI_VENDOR_ID_STALLION,
PCI_DEVICE_ID_ECRA, dev))) {
if ((rc = stli_initpcibrd(BRD_ECPPCI, dev)))
return(rc);
}
return(0);
}
#endif
/*****************************************************************************/
/*
* Allocate a new board structure. Fill out the basic info in it.
*/
static stlibrd_t *stli_allocbrd()
{
stlibrd_t *brdp;
brdp = (stlibrd_t *) stli_memalloc(sizeof(stlibrd_t));
if (brdp == (stlibrd_t *) NULL) {
printk(KERN_ERR "STALLION: failed to allocate memory "
"(size=%d)n", sizeof(stlibrd_t));
return((stlibrd_t *) NULL);
}
memset(brdp, 0, sizeof(stlibrd_t));
brdp->magic = STLI_BOARDMAGIC;
return(brdp);
}
/*****************************************************************************/
/*
* Scan through all the boards in the configuration and see what we
* can find.
*/
static inline int stli_initbrds()
{
stlibrd_t *brdp, *nxtbrdp;
stlconf_t *confp;
int i, j;
#if DEBUG
printk(KERN_DEBUG "stli_initbrds()n");
#endif
if (stli_nrbrds > STL_MAXBRDS) {
printk(KERN_INFO "STALLION: too many boards in configuration "
"table, truncating to %dn", STL_MAXBRDS);
stli_nrbrds = STL_MAXBRDS;
}
/*
* Firstly scan the list of static boards configured. Allocate
* resources and initialize the boards as found. If this is a
* module then let the module args override static configuration.
*/
for (i = 0; (i < stli_nrbrds); i++) {
confp = &stli_brdconf[i];
#ifdef MODULE
stli_parsebrd(confp, stli_brdsp[i]);
#endif
if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
return(-ENOMEM);
brdp->brdnr = i;
brdp->brdtype = confp->brdtype;
brdp->iobase = confp->ioaddr1;
brdp->memaddr = confp->memaddr;
stli_brdinit(brdp);
}
/*
* Static configuration table done, so now use dynamic methods to
* see if any more boards should be configured.
*/
#ifdef MODULE
stli_argbrds();
#endif
if (stli_eisaprobe)
stli_findeisabrds();
#ifdef CONFIG_PCI
stli_findpcibrds();
#endif
/*
* All found boards are initialized. Now for a little optimization, if
* no boards are sharing the "shared memory" regions then we can just
* leave them all enabled. This is in fact the usual case.
*/
stli_shared = 0;
if (stli_nrbrds > 1) {
for (i = 0; (i < stli_nrbrds); i++) {
brdp = stli_brds[i];
if (brdp == (stlibrd_t *) NULL)
continue;
for (j = i + 1; (j < stli_nrbrds); j++) {
nxtbrdp = stli_brds[j];
if (nxtbrdp == (stlibrd_t *) NULL)
continue;
if ((brdp->membase >= nxtbrdp->membase) &&
(brdp->membase <= (nxtbrdp->membase +
nxtbrdp->memsize - 1))) {
stli_shared++;
break;
}
}
}
}
if (stli_shared == 0) {
for (i = 0; (i < stli_nrbrds); i++) {
brdp = stli_brds[i];
if (brdp == (stlibrd_t *) NULL)
continue;
if (brdp->state & BST_FOUND) {
EBRDENABLE(brdp);
brdp->enable = NULL;
brdp->disable = NULL;
}
}
}
return(0);
}
/*****************************************************************************/
/*
* Code to handle an "staliomem" read operation. This device is the
* contents of the board shared memory. It is used for down loading
* the slave image (and debugging :-)
*/
static ssize_t stli_memread(struct file *fp, char *buf, size_t count, loff_t *offp)
{
unsigned long flags;
void *memptr;
stlibrd_t *brdp;
int brdnr, size, n;
#if DEBUG
printk(KERN_DEBUG "stli_memread(fp=%x,buf=%x,count=%x,offp=%x)n",
(int) fp, (int) buf, count, (int) offp);
#endif
brdnr = MINOR(fp->f_dentry->d_inode->i_rdev);
if (brdnr >= stli_nrbrds)
return(-ENODEV);
brdp = stli_brds[brdnr];
if (brdp == (stlibrd_t *) NULL)
return(-ENODEV);
if (brdp->state == 0)
return(-ENODEV);
if (fp->f_pos >= brdp->memsize)
return(0);
size = MIN(count, (brdp->memsize - fp->f_pos));
save_flags(flags);
cli();
EBRDENABLE(brdp);
while (size > 0) {
memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos);
n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize)));
if (copy_to_user(buf, memptr, n)) {
count = -EFAULT;
goto out;
}
fp->f_pos += n;
buf += n;
size -= n;
}
out:
EBRDDISABLE(brdp);
restore_flags(flags);
return(count);
}
/*****************************************************************************/
/*
* Code to handle an "staliomem" write operation. This device is the
* contents of the board shared memory. It is used for down loading
* the slave image (and debugging :-)
*/
static ssize_t stli_memwrite(struct file *fp, const char *buf, size_t count, loff_t *offp)
{
unsigned long flags;
void *memptr;
stlibrd_t *brdp;
char *chbuf;
int brdnr, size, n;
#if DEBUG
printk(KERN_DEBUG "stli_memwrite(fp=%x,buf=%x,count=%x,offp=%x)n",
(int) fp, (int) buf, count, (int) offp);
#endif
brdnr = MINOR(fp->f_dentry->d_inode->i_rdev);
if (brdnr >= stli_nrbrds)
return(-ENODEV);
brdp = stli_brds[brdnr];
if (brdp == (stlibrd_t *) NULL)
return(-ENODEV);
if (brdp->state == 0)
return(-ENODEV);
if (fp->f_pos >= brdp->memsize)
return(0);
chbuf = (char *) buf;
size = MIN(count, (brdp->memsize - fp->f_pos));
save_flags(flags);
cli();
EBRDENABLE(brdp);
while (size > 0) {
memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos);
n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize)));
if (copy_from_user(memptr, chbuf, n)) {
count = -EFAULT;
goto out;
}
fp->f_pos += n;
chbuf += n;
size -= n;
}
out:
EBRDDISABLE(brdp);
restore_flags(flags);
return(count);
}
/*****************************************************************************/
/*
* Return the board stats structure to user app.
*/
static int stli_getbrdstats(combrd_t *bp)
{
stlibrd_t *brdp;
int i;
if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t)))
return -EFAULT;
if (stli_brdstats.brd >= STL_MAXBRDS)
return(-ENODEV);
brdp = stli_brds[stli_brdstats.brd];
if (brdp == (stlibrd_t *) NULL)
return(-ENODEV);
memset(&stli_brdstats, 0, sizeof(combrd_t));
stli_brdstats.brd = brdp->brdnr;
stli_brdstats.type = brdp->brdtype;
stli_brdstats.hwid = 0;
stli_brdstats.state = brdp->state;
stli_brdstats.ioaddr = brdp->iobase;
stli_brdstats.memaddr = brdp->memaddr;
stli_brdstats.nrpanels = brdp->nrpanels;
stli_brdstats.nrports = brdp->nrports;
for (i = 0; (i < brdp->nrpanels); i++) {
stli_brdstats.panels[i].panel = i;
stli_brdstats.panels[i].hwid = brdp->panelids[i];
stli_brdstats.panels[i].nrports = brdp->panels[i];
}
if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t)))
return -EFAULT;
return(0);
}
/*****************************************************************************/
/*
* Resolve the referenced port number into a port struct pointer.
*/
static stliport_t *stli_getport(int brdnr, int panelnr, int portnr)
{
stlibrd_t *brdp;
int i;
if ((brdnr < 0) || (brdnr >= STL_MAXBRDS))
return((stliport_t *) NULL);
brdp = stli_brds[brdnr];
if (brdp == (stlibrd_t *) NULL)
return((stliport_t *) NULL);
for (i = 0; (i < panelnr); i++)
portnr += brdp->panels[i];
if ((portnr < 0) || (portnr >= brdp->nrports))
return((stliport_t *) NULL);
return(brdp->ports[portnr]);
}
/*****************************************************************************/
/*
* Return the port stats structure to user app. A NULL port struct
* pointer passed in means that we need to find out from the app
* what port to get stats for (used through board control device).
*/
static int stli_portcmdstats(stliport_t *portp)
{
unsigned long flags;
stlibrd_t *brdp;
int rc;
memset(&stli_comstats, 0, sizeof(comstats_t));
if (portp == (stliport_t *) NULL)
return(-ENODEV);
brdp = stli_brds[portp->brdnr];
if (brdp == (stlibrd_t *) NULL)
return(-ENODEV);
if (brdp->state & BST_STARTED) {
if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS,
&stli_cdkstats, sizeof(asystats_t), 1)) < 0)
return(rc);
} else {
memset(&stli_cdkstats, 0, sizeof(asystats_t));
}
stli_comstats.brd = portp->brdnr;
stli_comstats.panel = portp->panelnr;
stli_comstats.port = portp->portnr;
stli_comstats.state = portp->state;
stli_comstats.flags = portp->flags;
save_flags(flags);
cli();
if (portp->tty != (struct tty_struct *) NULL) {
if (portp->tty->driver_data == portp) {
stli_comstats.ttystate = portp->tty->flags;
stli_comstats.rxbuffered = portp->tty->flip.count;
if (portp->tty->termios != (struct termios *) NULL) {
stli_comstats.cflags = portp->tty->termios->c_cflag;
stli_comstats.iflags = portp->tty->termios->c_iflag;
stli_comstats.oflags = portp->tty->termios->c_oflag;
stli_comstats.lflags = portp->tty->termios->c_lflag;
}
}
}
restore_flags(flags);
stli_comstats.txtotal = stli_cdkstats.txchars;
stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover;
stli_comstats.txbuffered = stli_cdkstats.txringq;
stli_comstats.rxbuffered += stli_cdkstats.rxringq;
stli_comstats.rxoverrun = stli_cdkstats.overruns;
stli_comstats.rxparity = stli_cdkstats.parity;
stli_comstats.rxframing = stli_cdkstats.framing;
stli_comstats.rxlost = stli_cdkstats.ringover;
stli_comstats.rxbreaks = stli_cdkstats.rxbreaks;
stli_comstats.txbreaks = stli_cdkstats.txbreaks;
stli_comstats.txxon = stli_cdkstats.txstart;
stli_comstats.txxoff = stli_cdkstats.txstop;
stli_comstats.rxxon = stli_cdkstats.rxstart;
stli_comstats.rxxoff = stli_cdkstats.rxstop;
stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2;
stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff;
stli_comstats.modem = stli_cdkstats.dcdcnt;
stli_comstats.hwid = stli_cdkstats.hwid;
stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals);
return(0);
}
/*****************************************************************************/
/*
* Return the port stats structure to user app. A NULL port struct
* pointer passed in means that we need to find out from the app
* what port to get stats for (used through board control device).
*/
static int stli_getportstats(stliport_t *portp, comstats_t *cp)
{
stlibrd_t *brdp;
int rc;
if (portp == (stliport_t *) NULL) {
if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
return -EFAULT;
portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
stli_comstats.port);
if (portp == (stliport_t *) NULL)
return(-ENODEV);
}
brdp = stli_brds[portp->brdnr];
if (brdp == (stlibrd_t *) NULL)
return(-ENODEV);
if ((rc = stli_portcmdstats(portp)) < 0)
return(rc);
return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ?
-EFAULT : 0;
}
/*****************************************************************************/
/*
* Clear the port stats structure. We also return it zeroed out...
*/
static int stli_clrportstats(stliport_t *portp, comstats_t *cp)
{
stlibrd_t *brdp;
int rc;
if (portp == (stliport_t *) NULL) {
if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t)))
return -EFAULT;
portp = stli_getport(stli_comstats.brd, stli_comstats.panel,
stli_comstats.port);
if (portp == (stliport_t *) NULL)
return(-ENODEV);
}
brdp = stli_brds[portp->brdnr];
if (brdp == (stlibrd_t *) NULL)
return(-ENODEV);
if (brdp->state & BST_STARTED) {
if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, 0, 0, 0)) < 0)
return(rc);
}
memset(&stli_comstats, 0, sizeof(comstats_t));
stli_comstats.brd = portp->brdnr;
stli_comstats.panel = portp->panelnr;
stli_comstats.port = portp->portnr;
if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t)))
return -EFAULT;
return(0);
}
/*****************************************************************************/
/*
* Return the entire driver ports structure to a user app.
*/
static int stli_getportstruct(unsigned long arg)
{
stliport_t *portp;
if (copy_from_user(&stli_dummyport, (void *)arg, sizeof(stliport_t)))
return -EFAULT;
portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr,
stli_dummyport.portnr);
if (portp == (stliport_t *) NULL)
return(-ENODEV);
if (copy_to_user((void *) arg, portp, sizeof(stliport_t)))
return -EFAULT;
return(0);
}
/*****************************************************************************/
/*
* Return the entire driver board structure to a user app.
*/
static int stli_getbrdstruct(unsigned long arg)
{
stlibrd_t *brdp;
if (copy_from_user(&stli_dummybrd, (void *)arg, sizeof(stlibrd_t)))
return -EFAULT;
if ((stli_dummybrd.brdnr < 0) || (stli_dummybrd.brdnr >= STL_MAXBRDS))
return(-ENODEV);
brdp = stli_brds[stli_dummybrd.brdnr];
if (brdp == (stlibrd_t *) NULL)
return(-ENODEV);
if (copy_to_user((void *) arg, brdp, sizeof(stlibrd_t)))
return -EFAULT;
return(0);
}
/*****************************************************************************/
/*
* The "staliomem" device is also required to do some special operations on
* the board. We need to be able to send an interrupt to the board,
* reset it, and start/stop it.
*/
static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
{
stlibrd_t *brdp;
int brdnr, rc, done;
#if DEBUG
printk(KERN_DEBUG "stli_memioctl(ip=%x,fp=%x,cmd=%x,arg=%x)n",
(int) ip, (int) fp, cmd, (int) arg);
#endif
/*
* First up handle the board independent ioctls.
*/
done = 0;
rc = 0;
switch (cmd) {
case COM_GETPORTSTATS:
rc = stli_getportstats((stliport_t *)NULL, (comstats_t *)arg);
done++;
break;
case COM_CLRPORTSTATS:
rc = stli_clrportstats((stliport_t *)NULL, (comstats_t *)arg);
done++;
break;
case COM_GETBRDSTATS:
rc = stli_getbrdstats((combrd_t *) arg);
done++;
break;
case COM_READPORT:
rc = stli_getportstruct(arg);
done++;
break;
case COM_READBOARD:
rc = stli_getbrdstruct(arg);
done++;
break;
}
if (done)
return(rc);
/*
* Now handle the board specific ioctls. These all depend on the
* minor number of the device they were called from.
*/
brdnr = MINOR(ip->i_rdev);
if (brdnr >= STL_MAXBRDS)
return(-ENODEV);
brdp = stli_brds[brdnr];
if (brdp == (stlibrd_t *) NULL)
return(-ENODEV);
if (brdp->state == 0)
return(-ENODEV);
switch (cmd) {
case STL_BINTR:
EBRDINTR(brdp);
break;
case STL_BSTART:
rc = stli_startbrd(brdp);
break;
case STL_BSTOP:
brdp->state &= ~BST_STARTED;
break;
case STL_BRESET:
brdp->state &= ~BST_STARTED;
EBRDRESET(brdp);
if (stli_shared == 0) {
if (brdp->reenable != NULL)
(* brdp->reenable)(brdp);
}
break;
default:
rc = -ENOIOCTLCMD;
break;
}
return(rc);
}
/*****************************************************************************/
int __init stli_init(void)
{
printk(KERN_INFO "%s: version %sn", stli_drvtitle, stli_drvversion);
stli_initbrds();
/*
* Allocate a temporary write buffer.
*/
stli_tmpwritebuf = (char *) stli_memalloc(STLI_TXBUFSIZE);
if (stli_tmpwritebuf == (char *) NULL)
printk(KERN_ERR "STALLION: failed to allocate memory "
"(size=%d)n", STLI_TXBUFSIZE);
stli_txcookbuf = stli_memalloc(STLI_TXBUFSIZE);
if (stli_txcookbuf == (char *) NULL)
printk(KERN_ERR "STALLION: failed to allocate memory "
"(size=%d)n", STLI_TXBUFSIZE);
/*
* Set up a character driver for the shared memory region. We need this
* to down load the slave code image. Also it is a useful debugging tool.
*/
if (devfs_register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem))
printk(KERN_ERR "STALLION: failed to register serial memory "
"devicen");
devfs_handle = devfs_mk_dir (NULL, "staliomem", NULL);
devfs_register_series (devfs_handle, "%u", 4, DEVFS_FL_DEFAULT,
STL_SIOMEMMAJOR, 0,
S_IFCHR | S_IRUSR | S_IWUSR,
&stli_fsiomem, NULL);
/*
* Set up the tty driver structure and register us as a driver.
* Also setup the callout tty device.
*/
memset(&stli_serial, 0, sizeof(struct tty_driver));
stli_serial.magic = TTY_DRIVER_MAGIC;
stli_serial.driver_name = stli_drvname;
stli_serial.name = stli_serialname;
stli_serial.major = STL_SERIALMAJOR;
stli_serial.minor_start = 0;
stli_serial.num = STL_MAXBRDS * STL_MAXPORTS;
stli_serial.type = TTY_DRIVER_TYPE_SERIAL;
stli_serial.subtype = STL_DRVTYPSERIAL;
stli_serial.init_termios = stli_deftermios;
stli_serial.flags = TTY_DRIVER_REAL_RAW;
stli_serial.refcount = &stli_refcount;
stli_serial.table = stli_ttys;
stli_serial.termios = stli_termios;
stli_serial.termios_locked = stli_termioslocked;
stli_serial.open = stli_open;
stli_serial.close = stli_close;
stli_serial.write = stli_write;
stli_serial.put_char = stli_putchar;
stli_serial.flush_chars = stli_flushchars;
stli_serial.write_room = stli_writeroom;
stli_serial.chars_in_buffer = stli_charsinbuffer;
stli_serial.ioctl = stli_ioctl;
stli_serial.set_termios = stli_settermios;
stli_serial.throttle = stli_throttle;
stli_serial.unthrottle = stli_unthrottle;
stli_serial.stop = stli_stop;
stli_serial.start = stli_start;
stli_serial.hangup = stli_hangup;
stli_serial.flush_buffer = stli_flushbuffer;
stli_serial.break_ctl = stli_breakctl;
stli_serial.wait_until_sent = stli_waituntilsent;
stli_serial.send_xchar = stli_sendxchar;
stli_serial.read_proc = stli_readproc;
stli_callout = stli_serial;
stli_callout.name = stli_calloutname;
stli_callout.major = STL_CALLOUTMAJOR;
stli_callout.subtype = STL_DRVTYPCALLOUT;
stli_callout.read_proc = 0;
if (tty_register_driver(&stli_serial))
printk(KERN_ERR "STALLION: failed to register serial drivern");
if (tty_register_driver(&stli_callout))
printk(KERN_ERR "STALLION: failed to register callout drivern");
return(0);
}
/*****************************************************************************/