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Commit 0b064cdf authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
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[PATCH] Resurrect ISICOM serial 

The isicom driver had bitrotted badly and although it had some 2.6
cleanup work didn't actually do anything useful.  ISIcom had their own
2.4 driver which didn't work with 2.6 either but had done the hard work
like the locking rewrites.  So I nailed them together and then fixed
some obvious bugs in the ISIcom driver version.
parent e34626dd
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drivers/char/Kconfig
View file @ 0b064cdf
......@@ -203,7 +203,7 @@ config MOXA_SMARTIO
config ISI
tristate "Multi-Tech multiport card support (EXPERIMENTAL)"
depends on SERIAL_NONSTANDARD && PCI && EXPERIMENTAL && BROKEN_ON_SMP && m
depends on SERIAL_NONSTANDARD
help
This is a driver for the Multi-Tech cards which provide several
serial ports. The driver is experimental and can currently only be
......
drivers/char/isicom.c
View file @ 0b064cdf
......@@ -16,10 +16,81 @@
*
* 10/6/99 sameer Merged the ISA and PCI drivers to
* a new unified driver.
*
* 3/9/99 sameer Added support for ISI4616 cards.
*
* 16/9/99 sameer We do not force RTS low anymore.
* This is to prevent the firmware
* from getting confused.
*
* 26/10/99 sameer Cosmetic changes:The driver now
* dumps the Port Count information
* along with I/O address and IRQ.
*
* 13/12/99 sameer Fixed the problem with IRQ sharing.
*
* 10/5/00 sameer Fixed isicom_shutdown_board()
* to not lower DTR on all the ports
* when the last port on the card is
* closed.
*
* 10/5/00 sameer Signal mask setup command added
* to isicom_setup_port and
* isicom_shutdown_port.
*
* 24/5/00 sameer The driver is now SMP aware.
*
*
* 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem
*
*
* 03/01/01 anil .s Added support for resetting the
* internal modems on ISI cards.
*
* 08/02/01 anil .s Upgraded the driver for kernel
* 2.4.x
*
* 11/04/01 Kevin Fixed firmware load problem with
* ISIHP-4X card
*
* 30/04/01 anil .s Fixed the remote login through
* ISI port problem. Now the link
* does not go down before password
* prompt.
*
* 03/05/01 anil .s Fixed the problem with IRQ sharing
* among ISI-PCI cards.
*
* 03/05/01 anil .s Added support to display the version
* info during insmod as well as module
* listing by lsmod.
*
* 10/05/01 anil .s Done the modifications to the source
* file and Install script so that the
* same installation can be used for
* 2.2.x and 2.4.x kernel.
*
* 06/06/01 anil .s Now we drop both dtr and rts during
* shutdown_port as well as raise them
* during isicom_config_port.
*
* 09/06/01 acme@conectiva.com.br use capable, not suser, do
* restore_flags on failure in
* isicom_send_break, verify put_user
* result
*
* 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps
* Baud index extended to 21
*
* 20/03/03 ranjeeth Made to work for Linux Advanced server.
* Taken care of license warning.
*
* 10/12/03 Ravindra Made to work for Fedora Core 1 of
* Red Hat Distribution
*
* 06/01/05 Alan Cox Merged the ISI and base kernel strands
* into a single 2.6 driver
*
* ***********************************************************
*
* To use this driver you also need the support package. You
......@@ -35,6 +106,10 @@
*
* Omit those entries for boards you don't have installed.
*
* TODO
* Hotplug
* Merge testing
* 64-bit verification
*/
#include <linux/module.h>
......@@ -74,7 +149,6 @@ static struct pci_device_id isicom_pci_tbl[] = {
MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
static int prev_card = 3; /* start servicing isi_card[0] */
static struct isi_board * irq_to_board[16];
static struct tty_driver *isicom_normal;
static struct isi_board isi_card[BOARD_COUNT];
......@@ -101,9 +175,205 @@ static signed char linuxb_to_isib[] = {
18, 19
};
struct isi_board {
unsigned short base;
unsigned char irq;
unsigned char port_count;
unsigned short status;
unsigned short port_status; /* each bit represents a single port */
unsigned short shift_count;
struct isi_port * ports;
signed char count;
unsigned char isa;
spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
unsigned long flags;
};
struct isi_port {
unsigned short magic;
unsigned int flags;
int count;
int blocked_open;
int close_delay;
unsigned short channel;
unsigned short status;
unsigned short closing_wait;
struct isi_board * card;
struct tty_struct * tty;
wait_queue_head_t close_wait;
wait_queue_head_t open_wait;
struct work_struct hangup_tq;
struct work_struct bh_tqueue;
unsigned char * xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
};
/*
* Locking functions for card level locking. We need to own both
* the kernel lock for the card and have the card in a position that
* it wants to talk.
*/
static int lock_card(struct isi_board *card)
{
char retries;
unsigned short base = card->base;
for (retries = 0; retries < 100; retries++) {
spin_lock_irqsave(&card->card_lock, card->flags);
if (inw(base + 0xe) & 0x1) {
return 1;
} else {
spin_unlock_irqrestore(&card->card_lock, card->flags);
udelay(1000); /* 1ms */
}
}
printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%x)\n", card->base);
return 0; /* Failed to aquire the card! */
}
static int lock_card_at_interrupt(struct isi_board *card)
{
unsigned char retries;
unsigned short base = card->base;
for (retries = 0; retries < 200; retries++) {
spin_lock_irqsave(&card->card_lock, card->flags);
if (inw(base + 0xe) & 0x1)
return 1;
else
spin_unlock_irqrestore(&card->card_lock, card->flags);
}
/* Failing in interrupt is an acceptable event */
return 0; /* Failed to aquire the card! */
}
static void unlock_card(struct isi_board *card)
{
spin_unlock_irqrestore(&card->card_lock, card->flags);
}
/*
* ISI Card specific ops ...
*/
static void raise_dtr(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
if (!lock_card(card))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0504, base);
InterruptTheCard(base);
port->status |= ISI_DTR;
unlock_card(card);
}
static inline void drop_dtr(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
if (!lock_card(card))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0404, base);
InterruptTheCard(base);
port->status &= ~ISI_DTR;
unlock_card(card);
}
static inline void raise_rts(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
if (!lock_card(card))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0a04, base);
InterruptTheCard(base);
port->status |= ISI_RTS;
unlock_card(card);
}
static inline void drop_rts(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
if (!lock_card(card))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0804, base);
InterruptTheCard(base);
port->status &= ~ISI_RTS;
unlock_card(card);
}
static inline void raise_dtr_rts(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
if (!lock_card(card))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0f04, base);
InterruptTheCard(base);
port->status |= (ISI_DTR | ISI_RTS);
unlock_card(card);
}
static void drop_dtr_rts(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
if (!lock_card(card))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0c04, base);
InterruptTheCard(base);
port->status &= ~(ISI_RTS | ISI_DTR);
unlock_card(card);
}
static inline void kill_queue(struct isi_port * port, short queue)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
if (!lock_card(card))
return;
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw((queue << 8) | 0x06, base);
InterruptTheCard(base);
unlock_card(card);
}
/*
* Firmware loader driver specific routines
*
* Firmware loader driver specific routines. This needs to mostly die
* and be replaced with request_firmware.
*/
static struct file_operations ISILoad_fops = {
......@@ -354,15 +624,19 @@ static inline int isicom_paranoia_check(struct isi_port const * port, char *name
return 0;
}
/* Transmitter */
/*
* Transmitter.
*
* We shovel data into the card buffers on a regular basis. The card
* will do the rest of the work for us.
*/
static void isicom_tx(unsigned long _data)
{
short count = (BOARD_COUNT-1), card, base;
short txcount, wait, wrd, residue, word_count, cnt;
short txcount, wrd, residue, word_count, cnt;
struct isi_port * port;
struct tty_struct * tty;
unsigned long flags;
#ifdef ISICOM_DEBUG
++tx_count;
......@@ -384,33 +658,29 @@ static void isicom_tx(unsigned long _data)
port = isi_card[card].ports;
base = isi_card[card].base;
for (;count > 0;count--, port++) {
if (!lock_card_at_interrupt(&isi_card[card]))
continue;
/* port not active or tx disabled to force flow control */
if (!(port->status & ISI_TXOK))
if (!(port->flags & ASYNC_INITIALIZED) ||
!(port->status & ISI_TXOK))
unlock_card(&isi_card[card]);
continue;
tty = port->tty;
save_flags(flags); cli();
txcount = min_t(short, TX_SIZE, port->xmit_cnt);
if ((txcount <= 0) || tty->stopped || tty->hw_stopped) {
restore_flags(flags);
if(tty == NULL) {
unlock_card(&isi_card[card]);
continue;
}
wait = 200;
while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
if (wait <= 0) {
restore_flags(flags);
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: isicom_tx:Card(0x%x) found busy.\n",
card);
#endif
txcount = min_t(short, TX_SIZE, port->xmit_cnt);
if (txcount <= 0 || tty->stopped || tty->hw_stopped) {
unlock_card(&isi_card[card]);
continue;
}
if (!(inw(base + 0x02) & (1 << port->channel))) {
restore_flags(flags);
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: isicom_tx: cannot tx to 0x%x:%d.\n",
base, port->channel + 1);
#endif
unlock_card(&isi_card[card]);
continue;
}
#ifdef ISICOM_DEBUG
......@@ -459,10 +729,10 @@ static void isicom_tx(unsigned long _data)
port->status &= ~ISI_TXOK;
if (port->xmit_cnt <= WAKEUP_CHARS)
schedule_work(&port->bh_tqueue);
restore_flags(flags);
unlock_card(&isi_card[card]);
}
/* schedule another tx for hopefully in about 10ms */
/* schedule another tx for hopefully in about 10ms */
sched_again:
if (!re_schedule)
return;
......@@ -490,7 +760,10 @@ static void isicom_bottomhalf(void * data)
wake_up_interruptible(&tty->write_wait);
}
/* main interrupt handler routine */
/*
* Main interrupt handler routine
*/
static irqreturn_t isicom_interrupt(int irq, void *dev_id,
struct pt_regs *regs)
{
......@@ -501,31 +774,19 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id,
unsigned char channel;
short byte_count;
/*
* find the source of interrupt
*/
for(count = 0; count < BOARD_COUNT; count++) {
card = &isi_card[count];
if (card->base != 0) {
if (((card->isa == YES) && (card->irq == irq)) ||
((card->isa == NO) && (card->irq == irq) && (inw(card->base+0x0e) & 0x02)))
break;
}
card = NULL;
}
card = (struct isi_board *) dev_id;
if (!card || !(card->status & FIRMWARE_LOADED)) {
/* printk(KERN_DEBUG "ISICOM: interrupt: not handling irq%d!.\n", irq);*/
if (!card || !(card->status & FIRMWARE_LOADED))
return IRQ_NONE;
}
base = card->base;
spin_lock(&card->card_lock);
if (card->isa == NO) {
/*
* disable any interrupts from the PCI card and lower the
* interrupt line
*/
/*
* disable any interrupts from the PCI card and lower the
* interrupt line
*/
outw(0x8000, base+0x04);
ClearInterrupt(base);
}
......@@ -534,16 +795,15 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id,
header = inw(base);
channel = (header & 0x7800) >> card->shift_count;
byte_count = header & 0xff;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM:Intr:(0x%x:%d).\n", base, channel+1);
#endif
if ((channel+1) > card->port_count) {
if (channel + 1 > card->port_count) {
printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%x): %d(channel) > port_count.\n",
base, channel+1);
if (card->isa)
ClearInterrupt(base);
else
outw(0x0000, base+0x04); /* enable interrupts */
spin_unlock(&card->card_lock);
return IRQ_HANDLED;
}
port = card->ports + channel;
......@@ -556,6 +816,21 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id,
}
tty = port->tty;
if (tty == NULL) {
word_count = byte_count >> 1;
while(byte_count > 1) {
inw(base);
byte_count -= 2;
}
if (byte_count & 0x01)
inw(base);
if (card->isa == YES)
ClearInterrupt(base);
else
outw(0x0000, base+0x04); /* enable interrupts */
spin_unlock(&card->card_lock);
return IRQ_HANDLED;
}
if (header & 0x8000) { /* Status Packet */
header = inw(base);
......@@ -631,7 +906,6 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id,
if (tty->flip.count >= TTY_FLIPBUF_SIZE)
break;
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
/* dunno if this is right */
*tty->flip.char_buf_ptr++ = 0;
tty->flip.count++;
if (port->flags & ASYNC_SAK)
......@@ -683,13 +957,12 @@ static irqreturn_t isicom_interrupt(int irq, void *dev_id,
return IRQ_HANDLED;
}
/* called with interrupts disabled */
static void isicom_config_port(struct isi_port * port)
{
struct isi_board * card = port->card;
struct tty_struct * tty;
unsigned long baud;
unsigned short channel_setup, wait, base = card->base;
unsigned short channel_setup, base = card->base;
unsigned short channel = port->channel, shift_count = card->shift_count;
unsigned char flow_ctrl;
......@@ -729,40 +1002,36 @@ static void isicom_config_port(struct isi_port * port)
else
raise_dtr(port);
wait = 100;
while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
if (!wait) {
printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at channel setup.\n");
return;
}
outw(0x8000 | (channel << shift_count) |0x03, base);
outw(linuxb_to_isib[baud] << 8 | 0x03, base);
channel_setup = 0;
switch(C_CSIZE(tty)) {
case CS5:
channel_setup |= ISICOM_CS5;
break;
case CS6:
channel_setup |= ISICOM_CS6;
break;
case CS7:
channel_setup |= ISICOM_CS7;
break;
case CS8:
channel_setup |= ISICOM_CS8;
break;
}
if (C_CSTOPB(tty))
channel_setup |= ISICOM_2SB;
if (C_PARENB(tty))
channel_setup |= ISICOM_EVPAR;
if (C_PARODD(tty))
channel_setup |= ISICOM_ODPAR;
outw(channel_setup, base);
InterruptTheCard(base);
if (lock_card(card)) {
outw(0x8000 | (channel << shift_count) |0x03, base);
outw(linuxb_to_isib[baud] << 8 | 0x03, base);
channel_setup = 0;
switch(C_CSIZE(tty)) {
case CS5:
channel_setup |= ISICOM_CS5;
break;
case CS6:
channel_setup |= ISICOM_CS6;
break;
case CS7:
channel_setup |= ISICOM_CS7;
break;
case CS8:
channel_setup |= ISICOM_CS8;
break;
}
if (C_CSTOPB(tty))
channel_setup |= ISICOM_2SB;
if (C_PARENB(tty)) {
channel_setup |= ISICOM_EVPAR;
if (C_PARODD(tty))
channel_setup |= ISICOM_ODPAR;
}
outw(channel_setup, base);
InterruptTheCard(base);
unlock_card(card);
}
if (C_CLOCAL(tty))
port->flags &= ~ASYNC_CHECK_CD;
else
......@@ -780,23 +1049,19 @@ static void isicom_config_port(struct isi_port * port)
if (I_IXOFF(tty))
flow_ctrl |= ISICOM_INITIATE_XONXOFF;
wait = 100;
while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
if (!wait) {
printk(KERN_WARNING "ISICOM: Card found busy in isicom_config_port at flow setup.\n");
return;
}
outw(0x8000 | (channel << shift_count) |0x04, base);
outw(flow_ctrl << 8 | 0x05, base);
outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
InterruptTheCard(base);
if (lock_card(card)) {
outw(0x8000 | (channel << shift_count) |0x04, base);
outw(flow_ctrl << 8 | 0x05, base);
outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
InterruptTheCard(base);
unlock_card(card);
}
/* rx enabled -> enable port for rx on the card */
if (C_CREAD(tty)) {
card->port_status |= (1 << channel);
outw(card->port_status, base + 0x02);
}
}
/* open et all */
......@@ -807,22 +1072,16 @@ static inline void isicom_setup_board(struct isi_board * bp)
struct isi_port * port;
unsigned long flags;
if (bp->status & BOARD_ACTIVE)
spin_lock_irqsave(&bp->card_lock, flags);
if (bp->status & BOARD_ACTIVE) {
spin_unlock_irqrestore(&bp->card_lock, flags);
return;
port = bp->ports;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts start, port_count %d...\n", bp->port_count);
#endif
for(channel = 0; channel < bp->port_count; channel++, port++) {
save_flags(flags); cli();
drop_dtr_rts(port);
restore_flags(flags);
}
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: setup_board: drop_dtr_rts stop...\n");
#endif
port = bp->ports;
bp->status |= BOARD_ACTIVE;
spin_unlock_irqrestore(&bp->card_lock, flags);
for(channel = 0; channel < bp->port_count; channel++, port++)
drop_dtr_rts(port);
return;
}
......@@ -831,8 +1090,9 @@ static int isicom_setup_port(struct isi_port * port)
struct isi_board * card = port->card;
unsigned long flags;
if (port->flags & ASYNC_INITIALIZED)
if (port->flags & ASYNC_INITIALIZED) {
return 0;
}
if (!port->xmit_buf) {
unsigned long page;
......@@ -845,7 +1105,8 @@ static int isicom_setup_port(struct isi_port * port)
}
port->xmit_buf = (unsigned char *) page;
}
save_flags(flags); cli();
spin_lock_irqsave(&card->card_lock, flags);
if (port->tty)
clear_bit(TTY_IO_ERROR, &port->tty->flags);
if (port->count == 1)
......@@ -858,15 +1119,16 @@ static int isicom_setup_port(struct isi_port * port)
isicom_config_port(port);
port->flags |= ASYNC_INITIALIZED;
restore_flags(flags);
spin_unlock_irqrestore(&card->card_lock, flags);
return 0;
}
static int block_til_ready(struct tty_struct * tty, struct file * filp, struct isi_port * port)
{
struct isi_board * card = port->card;
int do_clocal = 0, retval;
unsigned long flags;
DECLARE_WAITQUEUE(wait, current);
/* block if port is in the process of being closed */
......@@ -894,49 +1156,34 @@ static int block_til_ready(struct tty_struct * tty, struct file * filp, struct i
if (C_CLOCAL(tty))
do_clocal = 1;
#ifdef ISICOM_DEBUG
if (do_clocal)
printk(KERN_DEBUG "ISICOM: block_til_ready: CLOCAL set.\n");
#endif
/* block waiting for DCD to be asserted, and while
callout dev is busy */
retval = 0;
add_wait_queue(&port->open_wait, &wait);
cli();
if (!tty_hung_up_p(filp))
port->count--;
sti();
spin_lock_irqsave(&card->card_lock, flags);
if (!tty_hung_up_p(filp))
port->count--;
port->blocked_open++;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: block_til_ready: waiting for DCD...\n");
#endif
spin_unlock_irqrestore(&card->card_lock, flags);
while (1) {
cli();
raise_dtr_rts(port);
sti();
set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) {
if (port->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: block_til_ready: tty_hung_up_p || not init.\n");
#endif
break;
}
if (!(port->flags & ASYNC_CLOSING) &&
(do_clocal || (port->status & ISI_DCD))) {
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: block_til_ready: do_clocal || DCD.\n");
#endif
break;
}
if (signal_pending(current)) {
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: block_til_ready: sig blocked.\n");
#endif
retval = -ERESTARTSYS;
break;
}
......@@ -944,9 +1191,11 @@ static int block_til_ready(struct tty_struct * tty, struct file * filp, struct i
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&port->open_wait, &wait);
spin_lock_irqsave(&card->card_lock, flags);
if (!tty_hung_up_p(filp))
port->count++;
port->blocked_open--;
spin_unlock_irqrestore(&card->card_lock, flags);
if (retval)
return retval;
port->flags |= ASYNC_NORMAL_ACTIVE;
......@@ -960,62 +1209,33 @@ static int isicom_open(struct tty_struct * tty, struct file * filp)
unsigned int line, board;
int error;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: open start!!!.\n");
#endif
line = tty->index;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "line = %d.\n", line);
#endif
if ((line < 0) || (line > (PORT_COUNT-1)))
if (line < 0 || line > PORT_COUNT-1)
return -ENODEV;
board = BOARD(line);
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "board = %d.\n", board);
#endif
card = &isi_card[board];
if (!(card->status & FIRMWARE_LOADED)) {
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG"ISICOM: Firmware not loaded to card%d.\n", board);
#endif
if (!(card->status & FIRMWARE_LOADED))
return -ENODEV;
}
/* open on a port greater than the port count for the card !!! */
if (line > ((board * 16) + card->port_count - 1)) {
printk(KERN_ERR "ISICOM: Open on a port which exceeds the port_count of the card!\n");
if (line > ((board * 16) + card->port_count - 1))
return -ENODEV;
}
port = &isi_ports[line];
if (isicom_paranoia_check(port, tty->name, "isicom_open"))
return -ENODEV;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: isicom_setup_board ...\n");
#endif
isicom_setup_board(card);
port->count++;
tty->driver_data = port;
port->tty = tty;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: isicom_setup_port ...\n");
#endif
if ((error = isicom_setup_port(port))!=0)
return error;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: block_til_ready ...\n");
#endif
if ((error = block_til_ready(tty, filp, port))!=0)
return error;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: open end!!!.\n");
#endif
return 0;
}
......@@ -1023,38 +1243,50 @@ static int isicom_open(struct tty_struct * tty, struct file * filp)
static inline void isicom_shutdown_board(struct isi_board * bp)
{
int channel;
struct isi_port * port;
if (!(bp->status & BOARD_ACTIVE))
return;
bp->status &= ~BOARD_ACTIVE;
port = bp->ports;
for(channel = 0; channel < bp->port_count; channel++, port++) {
drop_dtr_rts(port);
}
unsigned long flags;
spin_lock_irqsave(&bp->card_lock, flags);
if (bp->status & BOARD_ACTIVE) {
bp->status &= ~BOARD_ACTIVE;
}
spin_unlock_irqrestore(&bp->card_lock, flags);
}
static void isicom_shutdown_port(struct isi_port * port)
{
struct isi_board * card = port->card;
struct tty_struct * tty;
unsigned long flags;
if (!(port->flags & ASYNC_INITIALIZED))
tty = port->tty;
spin_lock_irqsave(&card->card_lock, flags);
if (!(port->flags & ASYNC_INITIALIZED)) {
spin_unlock_irqrestore(&card->card_lock, flags);
return;
}
if (port->xmit_buf) {
free_page((unsigned long) port->xmit_buf);
port->xmit_buf = NULL;
}
if (!(tty = port->tty) || C_HUPCL(tty))
port->flags &= ~ASYNC_INITIALIZED;
/* 3rd October 2000 : Vinayak P Risbud */
port->tty = 0;
spin_unlock_irqrestore(&card->card_lock, flags);
/*Fix done by Anil .S on 30-04-2001
remote login through isi port has dtr toggle problem
due to which the carrier drops before the password prompt
appears on the remote end. Now we drop the dtr only if the
HUPCL(Hangup on close) flag is set for the tty*/
if (C_HUPCL(tty))
/* drop dtr on this port */
drop_dtr(port);
/* any other port uninits */
if (tty)
set_bit(TTY_IO_ERROR, &tty->flags);
port->flags &= ~ASYNC_INITIALIZED;
if (--card->count < 0) {
printk(KERN_DEBUG "ISICOM: isicom_shutdown_port: bad board(0x%x) count %d.\n",
......@@ -1063,8 +1295,10 @@ static void isicom_shutdown_port(struct isi_port * port)
}
/* last port was closed , shutdown that boad too */
if (!card->count)
isicom_shutdown_board(card);
if(C_HUPCL(tty)) {
if (!card->count)
isicom_shutdown_board(card);
}
}
static void isicom_close(struct tty_struct * tty, struct file * filp)
......@@ -1082,13 +1316,13 @@ static void isicom_close(struct tty_struct * tty, struct file * filp)
printk(KERN_DEBUG "ISICOM: Close start!!!.\n");
#endif
save_flags(flags); cli();
spin_lock_irqsave(&card->card_lock, flags);
if (tty_hung_up_p(filp)) {
restore_flags(flags);
spin_unlock_irqrestore(&card->card_lock, flags);
return;
}
if ((tty->count == 1) && (port->count != 1)) {
if (tty->count == 1 && port->count != 1) {
printk(KERN_WARNING "ISICOM:(0x%x) isicom_close: bad port count"
"tty->count = 1 port count = %d.\n",
card->base, port->count);
......@@ -1102,41 +1336,46 @@ static void isicom_close(struct tty_struct * tty, struct file * filp)
}
if (port->count) {
restore_flags(flags);
spin_unlock_irqrestore(&card->card_lock, flags);
return;
}
port->flags |= ASYNC_CLOSING;
tty->closing = 1;
spin_unlock_irqrestore(&card->card_lock, flags);
if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent(tty, port->closing_wait);
/* indicate to the card that no more data can be received
on this port */
spin_lock_irqsave(&card->card_lock, flags);
if (port->flags & ASYNC_INITIALIZED) {
card->port_status &= ~(1 << port->channel);
outw(card->port_status, card->base + 0x02);
}
isicom_shutdown_port(port);
spin_unlock_irqrestore(&card->card_lock, flags);
if (tty->driver->flush_buffer)
tty->driver->flush_buffer(tty);
tty_ldisc_flush(tty);
spin_lock_irqsave(&card->card_lock, flags);
tty->closing = 0;
port->tty = NULL;
if (port->blocked_open) {
spin_unlock_irqrestore(&card->card_lock, flags);
if (port->close_delay) {
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: scheduling until time out.\n");
#endif
msleep_interruptible(jiffies_to_msecs(port->close_delay));
}
spin_lock_irqsave(&card->card_lock, flags);
wake_up_interruptible(&port->open_wait);
}
port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
wake_up_interruptible(&port->close_wait);
restore_flags(flags);
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: Close end!!!.\n");
#endif
spin_unlock_irqrestore(&card->card_lock, flags);
}
/* write et all */
......@@ -1144,21 +1383,19 @@ static int isicom_write(struct tty_struct * tty,
const unsigned char * buf, int count)
{
struct isi_port * port = (struct isi_port *) tty->driver_data;
struct isi_board * card = port->card;
unsigned long flags;
int cnt, total = 0;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: isicom_write for port%d: %d bytes.\n",
port->channel+1, count);
#endif
if (isicom_paranoia_check(port, tty->name, "isicom_write"))
return 0;
if (!tty || !port->xmit_buf || !tmp_buf)
return 0;
save_flags(flags);
spin_lock_irqsave(&card->card_lock, flags);
while(1) {
cli();
cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
SERIAL_XMIT_SIZE - port->xmit_head));
if (cnt <= 0)
......@@ -1167,17 +1404,13 @@ static int isicom_write(struct tty_struct * tty,
memcpy(port->xmit_buf + port->xmit_head, buf, cnt);
port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE - 1);
port->xmit_cnt += cnt;
restore_flags(flags);
buf += cnt;
count -= cnt;
total += cnt;
}
if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
port->status |= ISI_TXOK;
restore_flags(flags);
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: isicom_write %d bytes written.\n", total);
#endif
spin_unlock_irqrestore(&card->card_lock, flags);
return total;
}
......@@ -1185,6 +1418,7 @@ static int isicom_write(struct tty_struct * tty,
static void isicom_put_char(struct tty_struct * tty, unsigned char ch)
{
struct isi_port * port = (struct isi_port *) tty->driver_data;
struct isi_board * card = port->card;
unsigned long flags;
if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
......@@ -1192,21 +1426,17 @@ static void isicom_put_char(struct tty_struct * tty, unsigned char ch)
if (!tty || !port->xmit_buf)
return;
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: put_char, port %d, char %c.\n", port->channel+1, ch);
#endif
save_flags(flags); cli();
if (port->xmit_cnt >= (SERIAL_XMIT_SIZE - 1)) {
restore_flags(flags);
spin_lock_irqsave(&card->card_lock, flags);
if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
spin_unlock_irqrestore(&card->card_lock, flags);
return;
}
port->xmit_buf[port->xmit_head++] = ch;
port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
port->xmit_cnt++;
restore_flags(flags);
spin_unlock_irqrestore(&card->card_lock, flags);
}
/* flush_chars et all */
......@@ -1217,8 +1447,7 @@ static void isicom_flush_chars(struct tty_struct * tty)
if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
return;
if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
!port->xmit_buf)
if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || !port->xmit_buf)
return;
/* this tells the transmitter to consider this port for
......@@ -1231,6 +1460,7 @@ static int isicom_write_room(struct tty_struct * tty)
{
struct isi_port * port = (struct isi_port *) tty->driver_data;
int free;
if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
return 0;
......@@ -1253,21 +1483,17 @@ static int isicom_chars_in_buffer(struct tty_struct * tty)
static inline void isicom_send_break(struct isi_port * port, unsigned long length)
{
struct isi_board * card = port->card;
short wait = 10;
unsigned short base = card->base;
unsigned long flags;
save_flags(flags); cli();
while (((inw(base + 0x0e) & 0x0001) == 0) && (wait-- > 0));
if (!wait) {
printk(KERN_DEBUG "ISICOM: Card found busy in isicom_send_break.\n");
goto out;
}
if(!lock_card(card))
return;
outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
outw((length & 0xff) << 8 | 0x00, base);
outw((length & 0xff00), base);
InterruptTheCard(base);
out: restore_flags(flags);
unlock_card(card);
}
static int isicom_tiocmget(struct tty_struct *tty, struct file *file)
......@@ -1291,12 +1517,10 @@ static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
struct isi_port * port = (struct isi_port *) tty->driver_data;
unsigned long flags;
if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
return -ENODEV;
save_flags(flags); cli();
if (set & TIOCM_RTS)
raise_rts(port);
if (set & TIOCM_DTR)
......@@ -1307,7 +1531,6 @@ static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
if (clear & TIOCM_DTR)
drop_dtr(port);
restore_flags(flags);
return 0;
}
......@@ -1315,7 +1538,6 @@ static int isicom_set_serial_info(struct isi_port * port,
struct serial_struct __user *info)
{
struct serial_struct newinfo;
unsigned long flags;
int reconfig_port;
if(copy_from_user(&newinfo, info, sizeof(newinfo)))
......@@ -1340,9 +1562,7 @@ static int isicom_set_serial_info(struct isi_port * port,
(newinfo.flags & ASYNC_FLAGS));
}
if (reconfig_port) {
save_flags(flags); cli();
isicom_config_port(port);
restore_flags(flags);
}
return 0;
}
......@@ -1421,7 +1641,6 @@ static int isicom_ioctl(struct tty_struct * tty, struct file * filp,
static void isicom_set_termios(struct tty_struct * tty, struct termios * old_termios)
{
struct isi_port * port = (struct isi_port *) tty->driver_data;
unsigned long flags;
if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
return;
......@@ -1430,9 +1649,7 @@ static void isicom_set_termios(struct tty_struct * tty, struct termios * old_ter
tty->termios->c_iflag == old_termios->c_iflag)
return;
save_flags(flags); cli();
isicom_config_port(port);
restore_flags(flags);
if ((old_termios->c_cflag & CRTSCTS) &&
!(tty->termios->c_cflag & CRTSCTS)) {
......@@ -1446,16 +1663,13 @@ static void isicom_throttle(struct tty_struct * tty)
{
struct isi_port * port = (struct isi_port *) tty->driver_data;
struct isi_board * card = port->card;
unsigned long flags;
if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
return;
/* tell the card that this port cannot handle any more data for now */
save_flags(flags); cli();
card->port_status &= ~(1 << port->channel);
outw(card->port_status, card->base + 0x02);
restore_flags(flags);
}
/* unthrottle et all */
......@@ -1463,16 +1677,13 @@ static void isicom_unthrottle(struct tty_struct * tty)
{
struct isi_port * port = (struct isi_port *) tty->driver_data;
struct isi_board * card = port->card;
unsigned long flags;
if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
return;
/* tell the card that this port is ready to accept more data */
save_flags(flags); cli();
card->port_status |= (1 << port->channel);
outw(card->port_status, card->base + 0x02);
restore_flags(flags);
}
/* stop et all */
......@@ -1509,7 +1720,7 @@ static void do_isicom_hangup(void * data)
tty = port->tty;
if (tty)
tty_hangup(tty); /* FIXME: module removal race here - AKPM */
tty_hangup(tty);
}
static void isicom_hangup(struct tty_struct * tty)
......@@ -1530,21 +1741,22 @@ static void isicom_hangup(struct tty_struct * tty)
static void isicom_flush_buffer(struct tty_struct * tty)
{
struct isi_port * port = (struct isi_port *) tty->driver_data;
struct isi_board * card = port->card;
unsigned long flags;
if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
return;
save_flags(flags); cli();
spin_lock_irqsave(&card->card_lock, flags);
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
restore_flags(flags);
spin_unlock_irqrestore(&card->card_lock, flags);
wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
}
static int register_ioregion(void)
static int __init register_ioregion(void)
{
int count, done=0;
for (count=0; count < BOARD_COUNT; count++ ) {
......@@ -1559,7 +1771,7 @@ static int register_ioregion(void)
return done;
}
static void unregister_ioregion(void)
static void __exit unregister_ioregion(void)
{
int count;
for (count=0; count < BOARD_COUNT; count++ )
......@@ -1591,7 +1803,7 @@ static struct tty_operations isicom_ops = {
.tiocmset = isicom_tiocmset,
};
static int register_drivers(void)
static int __init register_drivers(void)
{
int error;
......@@ -1622,7 +1834,7 @@ static int register_drivers(void)
return 0;
}
static void unregister_drivers(void)
static void __exit unregister_drivers(void)
{
int error = tty_unregister_driver(isicom_normal);
if (error)
......@@ -1630,78 +1842,48 @@ static void unregister_drivers(void)
put_tty_driver(isicom_normal);
}
static int register_isr(void)
static int __init register_isr(void)
{
int count, done=0, card;
int flag;
unsigned char request;
int count, done=0;
unsigned long irqflags;
for (count=0; count < BOARD_COUNT; count++ ) {
if (isi_card[count].base) {
/*
* verify if the required irq has already been requested for
* another ISI Card, if so we already have it, else request it
*/
request = YES;
for(card = 0; card < count; card++)
if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
request = NO;
if ((isi_card[count].isa == NO) && (isi_card[card].isa == NO))
break;
/*
* ISA cards cannot share interrupts with other
* PCI or ISA devices hence disable this card.
*/
irqflags = (isi_card[count].isa == YES) ?
SA_INTERRUPT :
(SA_INTERRUPT | SA_SHIRQ);
if (request_irq(isi_card[count].irq,
isicom_interrupt,
irqflags,
ISICOM_NAME, &isi_card[count])) {
printk(KERN_WARNING "ISICOM: Could not"
" install handler at Irq %d."
" Card%d will be disabled.\n",
isi_card[count].irq, count+1);
release_region(isi_card[count].base,16);
isi_card[count].base = 0;
break;
}
flag=0;
if(isi_card[count].isa == NO)
flag |= SA_SHIRQ;
if (request == YES) {
if (request_irq(isi_card[count].irq, isicom_interrupt, SA_INTERRUPT|flag, ISICOM_NAME, NULL)) {
printk(KERN_WARNING "ISICOM: Could not install handler at Irq %d. Card%d will be disabled.\n",
isi_card[count].irq, count+1);
release_region(isi_card[count].base,16);
isi_card[count].base=0;
}
else {
printk(KERN_INFO "ISICOM: Card%d at 0x%x using irq %d.\n",
count+1, isi_card[count].base, isi_card[count].irq);
irq_to_board[isi_card[count].irq]=&isi_card[count];
done++;
}
isi_card[count].base=0;
}
else
done++;
}
}
return done;
}
static void unregister_isr(void)
static void __exit unregister_isr(void)
{
int count, card;
unsigned char freeirq;
int count;
for (count=0; count < BOARD_COUNT; count++ ) {
if (isi_card[count].base) {
freeirq = YES;
for(card = 0; card < count; card++)
if ((isi_card[card].base) && (isi_card[card].irq == isi_card[count].irq)) {
freeirq = NO;
break;
}
if (freeirq == YES) {
free_irq(isi_card[count].irq, NULL);
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: Irq %d released for Card%d.\n",isi_card[count].irq, count+1);
#endif
}
}
if (isi_card[count].base)
free_irq(isi_card[count].irq, &isi_card[count]);
}
}
static int isicom_init(void)
static int __init isicom_init(void)
{
int card, channel, base;
struct isi_port * port;
......@@ -1744,11 +1926,12 @@ static int isicom_init(void)
for (card = 0; card < BOARD_COUNT; card++) {
port = &isi_ports[card * 16];
isi_card[card].ports = port;
spin_lock_init(&isi_card[card].card_lock);
base = isi_card[card].base;
for (channel = 0; channel < 16; channel++, port++) {
port->magic = ISICOM_MAGIC;
port->card = &isi_card[card];
port->channel = channel;
port->channel = channel;
port->close_delay = 50 * HZ/100;
port->closing_wait = 3000 * HZ/100;
INIT_WORK(&port->hangup_tq, do_isicom_hangup, port);
......@@ -1778,7 +1961,7 @@ MODULE_PARM_DESC(io, "I/O ports for the cards");
module_param_array(irq, int, NULL, 0);
MODULE_PARM_DESC(irq, "Interrupts for the cards");
int init_module(void)
static int __devinit isicom_setup(void)
{
struct pci_dev *dev = NULL;
int retval, card, idx, count;
......@@ -1878,38 +2061,19 @@ int init_module(void)
return 0;
}
void cleanup_module(void)
static void __exit isicom_exit(void)
{
re_schedule = 0;
/* FIXME */
msleep(1000);
#ifdef ISICOM_DEBUG
printk("ISICOM: isicom_tx tx_count = %ld.\n", tx_count);
#endif
#ifdef ISICOM_DEBUG
printk("ISICOM: uregistering isr ...\n");
#endif
unregister_isr();
#ifdef ISICOM_DEBUG
printk("ISICOM: unregistering drivers ...\n");
#endif
unregister_drivers();
#ifdef ISICOM_DEBUG
printk("ISICOM: unregistering ioregion ...\n");
#endif
unregister_ioregion();
#ifdef ISICOM_DEBUG
printk("ISICOM: freeing tmp_buf ...\n");
#endif
free_page((unsigned long)tmp_buf);
#ifdef ISICOM_DEBUG
printk("ISICOM: unregistering firmware loader ...\n");
#endif
if(tmp_buf)
free_page((unsigned long)tmp_buf);
if (misc_deregister(&isiloader_device))
printk(KERN_ERR "ISICOM: Unable to unregister Firmware Loader driver\n");
}
module_init(isicom_setup);
module_exit(isicom_exit);
include/linux/isicom.h
View file @ 0b064cdf
......@@ -125,179 +125,6 @@ typedef struct {
#define ISI_TXOK 0x0001
struct isi_board {
unsigned short base;
unsigned char irq;
unsigned char port_count;
unsigned short status;
unsigned short port_status; /* each bit represents a single port */
unsigned short shift_count;
struct isi_port * ports;
signed char count;
unsigned char isa;
};
struct isi_port {
unsigned short magic;
unsigned int flags;
int count;
int blocked_open;
int close_delay;
unsigned short channel;
unsigned short status;
unsigned short closing_wait;
struct isi_board * card;
struct tty_struct * tty;
wait_queue_head_t close_wait;
wait_queue_head_t open_wait;
struct work_struct hangup_tq;
struct work_struct bh_tqueue;
unsigned char * xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
};
/*
* ISI Card specific ops ...
*/
static inline void raise_dtr(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
short wait=400;
while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
if (wait <= 0) {
printk(KERN_WARNING "ISICOM: Card found busy in raise_dtr.\n");
return;
}
#ifdef ISICOM_DEBUG_DTR_RTS
printk(KERN_DEBUG "ISICOM: raise_dtr.\n");
#endif
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0504, base);
InterruptTheCard(base);
port->status |= ISI_DTR;
}
static inline void drop_dtr(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
short wait=400;
while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
if (wait <= 0) {
printk(KERN_WARNING "ISICOM: Card found busy in drop_dtr.\n");
return;
}
#ifdef ISICOM_DEBUG_DTR_RTS
printk(KERN_DEBUG "ISICOM: drop_dtr.\n");
#endif
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0404, base);
InterruptTheCard(base);
port->status &= ~ISI_DTR;
}
static inline void raise_rts(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
short wait=400;
while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
if (wait <= 0) {
printk(KERN_WARNING "ISICOM: Card found busy in raise_rts.\n");
return;
}
#ifdef ISICOM_DEBUG_DTR_RTS
printk(KERN_DEBUG "ISICOM: raise_rts.\n");
#endif
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0a04, base);
InterruptTheCard(base);
port->status |= ISI_RTS;
}
static inline void drop_rts(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
short wait=400;
while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
if (wait <= 0) {
printk(KERN_WARNING "ISICOM: Card found busy in drop_rts.\n");
return;
}
#ifdef ISICOM_DEBUG_DTR_RTS
printk(KERN_DEBUG "ISICOM: drop_rts.\n");
#endif
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0804, base);
InterruptTheCard(base);
port->status &= ~ISI_RTS;
}
static inline void raise_dtr_rts(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
short wait=400;
while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
if (wait <= 0) {
printk(KERN_WARNING "ISICOM: Card found busy in raise_dtr_rts.\n");
return;
}
#ifdef ISICOM_DEBUG_DTR_RTS
printk(KERN_DEBUG "ISICOM: raise_dtr_rts.\n");
#endif
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0f04, base);
InterruptTheCard(base);
port->status |= (ISI_DTR | ISI_RTS);
}
static inline void drop_dtr_rts(struct isi_port * port)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
short wait=400;
while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
if (wait <= 0) {
printk(KERN_WARNING "ISICOM: Card found busy in drop_dtr_rts.\n");
return;
}
#ifdef ISICOM_DEBUG_DTR_RTS
printk(KERN_DEBUG "ISICOM: drop_dtr_rts.\n");
#endif
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw(0x0c04, base);
InterruptTheCard(base);
port->status &= ~(ISI_RTS | ISI_DTR);
}
static inline void kill_queue(struct isi_port * port, short queue)
{
struct isi_board * card = port->card;
unsigned short base = card->base;
unsigned char channel = port->channel;
short wait=400;
while(((inw(base+0x0e) & 0x01) == 0) && (wait-- > 0));
if (wait <= 0) {
printk(KERN_WARNING "ISICOM: Card found busy in kill_queue.\n");
return;
}
#ifdef ISICOM_DEBUG
printk(KERN_DEBUG "ISICOM: kill_queue 0x%x.\n", queue);
#endif
outw(0x8000 | (channel << card->shift_count) | 0x02 , base);
outw((queue << 8) | 0x06, base);
InterruptTheCard(base);
}
#endif /* __KERNEL__ */
#endif /* ISICOM_H */
......
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