#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
struct _input_signal_events {
- int ri_up;
+ int ri_up;
int ri_down;
int dsr_up;
int dsr_down;
/*
* Device instance data structure
*/
-
+
typedef struct _mgslpc_info {
void *if_ptr; /* General purpose pointer (used by SPPP) */
int magic;
int line;
unsigned short close_delay;
unsigned short closing_wait; /* time to wait before closing */
-
+
struct mgsl_icount icount;
-
+
struct tty_struct *tty;
int timeout;
int x_char; /* xon/xoff character */
int blocked_open; /* # of blocked opens */
unsigned char read_status_mask;
- unsigned char ignore_status_mask;
+ unsigned char ignore_status_mask;
unsigned char *tx_buf;
int tx_put;
int rx_buf_size; /* size in bytes of single rx buffer */
int rx_buf_count; /* total number of rx buffers */
int rx_frame_count; /* number of full rx buffers */
-
+
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
-
+
wait_queue_head_t status_event_wait_q;
wait_queue_head_t event_wait_q;
struct timer_list tx_timer; /* HDLC transmit timeout timer */
int bh_running;
int bh_requested;
-
+
int dcd_chkcount; /* check counts to prevent */
int cts_chkcount; /* too many IRQs if a signal */
int dsr_chkcount; /* is floating */
unsigned int io_base; /* base I/O address of adapter */
unsigned int irq_level;
-
+
MGSL_PARAMS params; /* communications parameters */
unsigned char serial_signals; /* current serial signal states */
*/
#define TXBUFSIZE 4096
-
+
#define CHA 0x00 /* channel A offset */
#define CHB 0x40 /* channel B offset */
#define PIM 0x3d
#define PCR 0x3e
#define CCR4 0x3f
-
+
// IMR/ISR
-
+
#define IRQ_BREAK_ON BIT15 // rx break detected
#define IRQ_DATAOVERRUN BIT14 // receive data overflow
#define IRQ_ALLSENT BIT13 // all sent
#define IRQ_DCD BIT2 // carrier detect status change
#define IRQ_OVERRUN BIT1 // receive frame overflow
#define IRQ_RXFIFO BIT0 // receive pool full
-
+
// STAR
-
+
#define XFW BIT6 // transmit FIFO write enable
#define CEC BIT2 // command executing
#define CTS BIT1 // CTS state
-
+
#define PVR_DTR BIT0
#define PVR_DSR BIT1
#define PVR_RI BIT2
#define PVR_RS232 0x20 /* 0010b */
#define PVR_V35 0xe0 /* 1110b */
#define PVR_RS422 0x40 /* 0100b */
-
-/* Register access functions */
-
+
+/* Register access functions */
+
#define write_reg(info, reg, val) outb((val),(info)->io_base + (reg))
#define read_reg(info, reg) inb((info)->io_base + (reg))
-#define read_reg16(info, reg) inw((info)->io_base + (reg))
+#define read_reg16(info, reg) inw((info)->io_base + (reg))
#define write_reg16(info, reg, val) outw((val), (info)->io_base + (reg))
-
+
#define set_reg_bits(info, reg, mask) \
write_reg(info, (reg), \
- (unsigned char) (read_reg(info, (reg)) | (mask)))
+ (unsigned char) (read_reg(info, (reg)) | (mask)))
#define clear_reg_bits(info, reg, mask) \
write_reg(info, (reg), \
- (unsigned char) (read_reg(info, (reg)) & ~(mask)))
+ (unsigned char) (read_reg(info, (reg)) & ~(mask)))
/*
* interrupt enable/disable routines
- */
-static void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask)
+ */
+static void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask)
{
if (channel == CHA) {
info->imra_value |= mask;
write_reg16(info, CHB + IMR, info->imrb_value);
}
}
-static void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask)
+static void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask)
{
if (channel == CHA) {
info->imra_value &= ~mask;
spin_lock_init(&info->lock);
spin_lock_init(&info->netlock);
memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS));
- info->idle_mode = HDLC_TXIDLE_FLAGS;
+ info->idle_mode = HDLC_TXIDLE_FLAGS;
info->imra_value = 0xffff;
info->imrb_value = 0xffff;
info->pim_value = 0xff;
u_char buf[64];
cistpl_cftable_entry_t dflt = { 0 };
cistpl_cftable_entry_t *cfg;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("mgslpc_config(0x%p)\n", link);
link->conf.ConfigIndex = cfg->index;
link->conf.Attributes |= CONF_ENABLE_IRQ;
-
+
/* IO window settings */
link->io.NumPorts1 = 0;
if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
link->conf.IntType = INT_MEMORY_AND_IO;
link->conf.ConfigIndex = 8;
link->conf.Present = PRESENT_OPTION;
-
+
link->irq.Attributes |= IRQ_HANDLE_PRESENT;
link->irq.Handler = mgslpc_isr;
link->irq.Instance = info;
#define CMD_TXEOM BIT1 // transmit end message
#define CMD_TXRESET BIT0 // transmit reset
-static BOOLEAN wait_command_complete(MGSLPC_INFO *info, unsigned char channel)
+static BOOLEAN wait_command_complete(MGSLPC_INFO *info, unsigned char channel)
{
int i = 0;
- /* wait for command completion */
+ /* wait for command completion */
while (read_reg(info, (unsigned char)(channel+STAR)) & BIT2) {
udelay(1);
if (i++ == 1000)
return TRUE;
}
-static void issue_command(MGSLPC_INFO *info, unsigned char channel, unsigned char cmd)
+static void issue_command(MGSLPC_INFO *info, unsigned char channel, unsigned char cmd)
{
wait_command_complete(info, channel);
write_reg(info, (unsigned char) (channel + CMDR), cmd);
{
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags;
-
+
if (mgslpc_paranoia_check(info, tty->name, "tx_pause"))
return;
if (debug_level >= DEBUG_LEVEL_INFO)
- printk("tx_pause(%s)\n",info->device_name);
-
+ printk("tx_pause(%s)\n",info->device_name);
+
spin_lock_irqsave(&info->lock,flags);
if (info->tx_enabled)
tx_stop(info);
{
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags;
-
+
if (mgslpc_paranoia_check(info, tty->name, "tx_release"))
return;
if (debug_level >= DEBUG_LEVEL_INFO)
- printk("tx_release(%s)\n",info->device_name);
-
+ printk("tx_release(%s)\n",info->device_name);
+
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_enabled)
tx_start(info);
{
unsigned long flags;
int rc = 0;
-
+
spin_lock_irqsave(&info->lock,flags);
if (info->pending_bh & BH_RECEIVE) {
info->bh_running = 0;
info->bh_requested = 0;
}
-
+
spin_unlock_irqrestore(&info->lock,flags);
-
+
return rc;
}
if (!info)
return;
-
+
if (debug_level >= DEBUG_LEVEL_BH)
printk( "%s(%d):bh_handler(%s) entry\n",
__FILE__,__LINE__,info->device_name);
-
+
info->bh_running = 1;
while((action = bh_action(info)) != 0) {
-
+
/* Process work item */
if ( debug_level >= DEBUG_LEVEL_BH )
printk( "%s(%d):bh_handler() work item action=%d\n",
__FILE__,__LINE__,action);
switch (action) {
-
+
case BH_RECEIVE:
while(rx_get_frame(info));
break;
info->cts_chkcount = 0;
}
-/* eom: non-zero = end of frame */
+/* eom: non-zero = end of frame */
static void rx_ready_hdlc(MGSLPC_INFO *info, int eom)
{
unsigned char data[2];
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s(%d):rx_ready_hdlc(eom=%d)\n",__FILE__,__LINE__,eom);
-
+
if (!info->rx_enabled)
return;
}
if (eom) {
- /* end of frame, get FIFO count from RBCL register */
+ /* end of frame, get FIFO count from RBCL register */
if (!(fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f)))
fifo_count = 32;
} else
fifo_count = 32;
-
+
do {
if (fifo_count == 1) {
read_count = 1;
struct mgsl_icount *icount = &info->icount;
if (tcd) {
- /* early termination, get FIFO count from RBCL register */
+ /* early termination, get FIFO count from RBCL register */
fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f);
/* Zero fifo count could mean 0 or 32 bytes available.
fifo_count = 32;
tty_buffer_request_room(tty, fifo_count);
- /* Flush received async data to receive data buffer. */
+ /* Flush received async data to receive data buffer. */
while (fifo_count) {
data = read_reg(info, CHA + RXFIFO);
status = read_reg(info, CHA + RXFIFO);
// BIT6:framing error
if (status & (BIT7 + BIT6)) {
- if (status & BIT7)
+ if (status & BIT7)
icount->parity++;
else
icount->frame++;
/* discard char if tty control flags say so */
if (status & info->ignore_status_mask)
continue;
-
+
status &= info->read_status_mask;
if (status & BIT7)
__FILE__,__LINE__,icount->rx,icount->brk,
icount->parity,icount->frame,icount->overrun);
}
-
+
if (work)
tty_flip_buffer_push(tty);
}
{
if (!info->tx_active)
return;
-
+
info->tx_active = 0;
info->tx_aborting = 0;
return;
info->tx_count = info->tx_put = info->tx_get = 0;
- del_timer(&info->tx_timer);
-
+ del_timer(&info->tx_timer);
+
if (info->drop_rts_on_tx_done) {
get_signals(info);
if (info->serial_signals & SerialSignal_RTS) {
#if SYNCLINK_GENERIC_HDLC
if (info->netcount)
hdlcdev_tx_done(info);
- else
+ else
#endif
{
if (info->tty->stopped || info->tty->hw_stopped) {
while (info->tx_count && fifo_count) {
c = min(2, min_t(int, fifo_count, min(info->tx_count, TXBUFSIZE - info->tx_get)));
-
+
if (c == 1) {
write_reg(info, CHA + TXFIFO, *(info->tx_buf + info->tx_get));
} else {
}
/* Interrupt service routine entry point.
- *
+ *
* Arguments:
- *
+ *
* irq interrupt number that caused interrupt
* dev_id device ID supplied during interrupt registration
*/
unsigned char gis, pis;
int count=0;
- if (debug_level >= DEBUG_LEVEL_ISR)
+ if (debug_level >= DEBUG_LEVEL_ISR)
printk("mgslpc_isr(%d) entry.\n", irq);
if (!info)
return IRQ_NONE;
-
+
if (!(info->p_dev->_locked))
return IRQ_HANDLED;
spin_lock(&info->lock);
while ((gis = read_reg(info, CHA + GIS))) {
- if (debug_level >= DEBUG_LEVEL_ISR)
+ if (debug_level >= DEBUG_LEVEL_ISR)
printk("mgslpc_isr %s gis=%04X\n", info->device_name,gis);
if ((gis & 0x70) || count > 1000) {
irq_disable(info, CHA, IRQ_TIMER);
}
- /* receive IRQs */
+ /* receive IRQs */
if (isr & IRQ_EXITHUNT) {
info->icount.exithunt++;
wake_up_interruptible(&info->event_wait_q);
}
if (isr & (IRQ_RXEOM + IRQ_RXFIFO)) {
if (info->params.mode == MGSL_MODE_HDLC)
- rx_ready_hdlc(info, isr & IRQ_RXEOM);
+ rx_ready_hdlc(info, isr & IRQ_RXEOM);
else
rx_ready_async(info, isr & IRQ_RXEOM);
}
- /* transmit IRQs */
+ /* transmit IRQs */
if (isr & IRQ_UNDERRUN) {
if (info->tx_aborting)
info->icount.txabort++;
ri_change(info);
}
}
-
- /* Request bottom half processing if there's something
+
+ /* Request bottom half processing if there's something
* for it to do and the bh is not already running
*/
if (info->pending_bh && !info->bh_running && !info->bh_requested) {
- if ( debug_level >= DEBUG_LEVEL_ISR )
+ if ( debug_level >= DEBUG_LEVEL_ISR )
printk("%s(%d):%s queueing bh task.\n",
__FILE__,__LINE__,info->device_name);
schedule_work(&info->task);
}
spin_unlock(&info->lock);
-
- if (debug_level >= DEBUG_LEVEL_ISR)
+
+ if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s(%d):mgslpc_isr(%d)exit.\n",
__FILE__,__LINE__,irq);
static int startup(MGSLPC_INFO * info)
{
int retval = 0;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):startup(%s)\n",__FILE__,__LINE__,info->device_name);
-
+
if (info->flags & ASYNC_INITIALIZED)
return 0;
-
+
if (!info->tx_buf) {
/* allocate a page of memory for a transmit buffer */
info->tx_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL);
}
info->pending_bh = 0;
-
+
memset(&info->icount, 0, sizeof(info->icount));
setup_timer(&info->tx_timer, tx_timeout, (unsigned long)info);
/* Allocate and claim adapter resources */
retval = claim_resources(info);
-
+
/* perform existance check and diagnostics */
if ( !retval )
retval = adapter_test(info);
-
+
if ( retval ) {
if (capable(CAP_SYS_ADMIN) && info->tty)
set_bit(TTY_IO_ERROR, &info->tty->flags);
/* program hardware for current parameters */
mgslpc_change_params(info);
-
+
if (info->tty)
clear_bit(TTY_IO_ERROR, &info->tty->flags);
info->flags |= ASYNC_INITIALIZED;
-
+
return 0;
}
static void shutdown(MGSLPC_INFO * info)
{
unsigned long flags;
-
+
if (!(info->flags & ASYNC_INITIALIZED))
return;
/* TODO:disable interrupts instead of reset to preserve signal states */
reset_device(info);
-
+
if (!info->tty || info->tty->termios->c_cflag & HUPCL) {
info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS);
set_signals(info);
}
-
+
spin_unlock_irqrestore(&info->lock,flags);
- release_resources(info);
-
+ release_resources(info);
+
if (info->tty)
set_bit(TTY_IO_ERROR, &info->tty->flags);
unsigned long flags;
spin_lock_irqsave(&info->lock,flags);
-
+
rx_stop(info);
tx_stop(info);
info->tx_count = info->tx_put = info->tx_get = 0;
-
+
if (info->params.mode == MGSL_MODE_HDLC || info->netcount)
hdlc_mode(info);
else
async_mode(info);
-
+
set_signals(info);
-
+
info->dcd_chkcount = 0;
info->cts_chkcount = 0;
info->ri_chkcount = 0;
irq_enable(info, CHB, IRQ_DCD | IRQ_CTS);
port_irq_enable(info, (unsigned char) PVR_DSR | PVR_RI);
get_signals(info);
-
+
if (info->netcount || info->tty->termios->c_cflag & CREAD)
rx_start(info);
-
+
spin_unlock_irqrestore(&info->lock,flags);
}
if (!info->tty || !info->tty->termios)
return;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_change_params(%s)\n",
__FILE__,__LINE__, info->device_name );
-
+
cflag = info->tty->termios->c_cflag;
/* if B0 rate (hangup) specified then negate DTR and RTS */
info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
else
info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
-
+
/* byte size and parity */
-
+
switch (cflag & CSIZE) {
case CS5: info->params.data_bits = 5; break;
case CS6: info->params.data_bits = 6; break;
case CS8: info->params.data_bits = 8; break;
default: info->params.data_bits = 7; break;
}
-
+
if (cflag & CSTOPB)
info->params.stop_bits = 2;
else
/* calculate number of jiffies to transmit a full
* FIFO (32 bytes) at specified data rate
*/
- bits_per_char = info->params.data_bits +
+ bits_per_char = info->params.data_bits +
info->params.stop_bits + 1;
/* if port data rate is set to 460800 or less then
if (info->params.data_rate <= 460800) {
info->params.data_rate = tty_get_baud_rate(info->tty);
}
-
+
if ( info->params.data_rate ) {
- info->timeout = (32*HZ*bits_per_char) /
+ info->timeout = (32*HZ*bits_per_char) /
info->params.data_rate;
}
info->timeout += HZ/50; /* Add .02 seconds of slop */
info->flags |= ASYNC_CTS_FLOW;
else
info->flags &= ~ASYNC_CTS_FLOW;
-
+
if (cflag & CLOCAL)
info->flags &= ~ASYNC_CHECK_CD;
else
info->flags |= ASYNC_CHECK_CD;
/* process tty input control flags */
-
+
info->read_status_mask = 0;
if (I_INPCK(info->tty))
info->read_status_mask |= BIT7 | BIT6;
return;
spin_lock_irqsave(&info->lock,flags);
-
+
if (info->params.mode == MGSL_MODE_ASYNC || !info->tx_active) {
if (info->tx_count < TXBUFSIZE - 1) {
info->tx_buf[info->tx_put++] = ch;
info->tx_count++;
}
}
-
+
spin_unlock_irqrestore(&info->lock,flags);
}
{
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk( "%s(%d):mgslpc_flush_chars() entry on %s tx_count=%d\n",
__FILE__,__LINE__,info->device_name,info->tx_count);
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_chars"))
return;
}
/* Send a block of data
- *
+ *
* Arguments:
- *
+ *
* tty pointer to tty information structure
* buf pointer to buffer containing send data
* count size of send data in bytes
- *
+ *
* Returns: number of characters written
*/
static int mgslpc_write(struct tty_struct * tty,
int c, ret = 0;
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk( "%s(%d):mgslpc_write(%s) count=%d\n",
__FILE__,__LINE__,info->device_name,count);
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write") ||
!info->tx_buf)
goto cleanup;
TXBUFSIZE - info->tx_put));
if (c <= 0)
break;
-
+
memcpy(info->tx_buf + info->tx_put, buf, c);
spin_lock_irqsave(&info->lock,flags);
tx_start(info);
spin_unlock_irqrestore(&info->lock,flags);
}
-cleanup:
+cleanup:
if (debug_level >= DEBUG_LEVEL_INFO)
printk( "%s(%d):mgslpc_write(%s) returning=%d\n",
__FILE__,__LINE__,info->device_name,ret);
{
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
int ret;
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write_room"))
return 0;
if (ret < 0)
ret = 0;
}
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_write_room(%s)=%d\n",
__FILE__,__LINE__, info->device_name, ret);
{
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
int rc;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_chars_in_buffer(%s)\n",
__FILE__,__LINE__, info->device_name );
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_chars_in_buffer"))
return 0;
-
+
if (info->params.mode == MGSL_MODE_HDLC)
rc = info->tx_active ? info->max_frame_size : 0;
else
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_chars_in_buffer(%s)=%d\n",
__FILE__,__LINE__, info->device_name, rc);
-
+
return rc;
}
{
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_flush_buffer(%s) entry\n",
__FILE__,__LINE__, info->device_name );
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_buffer"))
return;
-
- spin_lock_irqsave(&info->lock,flags);
+
+ spin_lock_irqsave(&info->lock,flags);
info->tx_count = info->tx_put = info->tx_get = 0;
- del_timer(&info->tx_timer);
+ del_timer(&info->tx_timer);
spin_unlock_irqrestore(&info->lock,flags);
wake_up_interruptible(&tty->write_wait);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_send_xchar(%s,%d)\n",
__FILE__,__LINE__, info->device_name, ch );
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_send_xchar"))
return;
{
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_throttle(%s) entry\n",
__FILE__,__LINE__, info->device_name );
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_throttle"))
return;
-
+
if (I_IXOFF(tty))
mgslpc_send_xchar(tty, STOP_CHAR(tty));
-
+
if (tty->termios->c_cflag & CRTSCTS) {
spin_lock_irqsave(&info->lock,flags);
info->serial_signals &= ~SerialSignal_RTS;
{
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_unthrottle(%s) entry\n",
__FILE__,__LINE__, info->device_name );
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_unthrottle"))
return;
-
+
if (I_IXOFF(tty)) {
if (info->x_char)
info->x_char = 0;
else
mgslpc_send_xchar(tty, START_CHAR(tty));
}
-
+
if (tty->termios->c_cflag & CRTSCTS) {
spin_lock_irqsave(&info->lock,flags);
info->serial_signals |= SerialSignal_RTS;
}
/* set the serial parameters
- *
+ *
* Arguments:
- *
+ *
* info pointer to device instance data
* new_params user buffer containing new serial params
*
unsigned long flags;
MGSL_PARAMS tmp_params;
int err;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):set_params %s\n", __FILE__,__LINE__,
info->device_name );
__FILE__,__LINE__,info->device_name);
return -EFAULT;
}
-
+
spin_lock_irqsave(&info->lock,flags);
memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS));
spin_unlock_irqrestore(&info->lock,flags);
-
+
mgslpc_change_params(info);
-
+
return 0;
}
static int set_txenable(MGSLPC_INFO * info, int enable)
{
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("set_txenable(%s,%d)\n", info->device_name, enable);
-
+
spin_lock_irqsave(&info->lock,flags);
if (enable) {
if (!info->tx_enabled)
static int tx_abort(MGSLPC_INFO * info)
{
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("tx_abort(%s)\n", info->device_name);
-
+
spin_lock_irqsave(&info->lock,flags);
if (info->tx_active && info->tx_count &&
info->params.mode == MGSL_MODE_HDLC) {
static int set_rxenable(MGSLPC_INFO * info, int enable)
{
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("set_rxenable(%s,%d)\n", info->device_name, enable);
-
+
spin_lock_irqsave(&info->lock,flags);
if (enable) {
if (!info->rx_enabled)
}
/* wait for specified event to occur
- *
+ *
* Arguments: info pointer to device instance data
* mask pointer to bitmask of events to wait for
* Return Value: 0 if successful and bit mask updated with
COPY_FROM_USER(rc,&mask, mask_ptr, sizeof(int));
if (rc)
return -EFAULT;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("wait_events(%s,%d)\n", info->device_name, mask);
/* save current irq counts */
cprev = info->icount;
oldsigs = info->input_signal_events;
-
+
if ((info->params.mode == MGSL_MODE_HDLC) &&
(mask & MgslEvent_ExitHuntMode))
irq_enable(info, CHA, IRQ_EXITHUNT);
-
+
set_current_state(TASK_INTERRUPTIBLE);
add_wait_queue(&info->event_wait_q, &wait);
-
+
spin_unlock_irqrestore(&info->lock,flags);
-
-
+
+
for(;;) {
schedule();
if (signal_pending(current)) {
rc = -ERESTARTSYS;
break;
}
-
+
/* get current irq counts */
spin_lock_irqsave(&info->lock,flags);
cnow = info->icount;
(cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) );
if (events)
break;
-
+
cprev = cnow;
oldsigs = newsigs;
}
-
+
remove_wait_queue(&info->event_wait_q, &wait);
set_current_state(TASK_RUNNING);
{
MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_break(%s,%d)\n",
__FILE__,__LINE__, info->device_name, break_state);
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_break"))
return;
spin_lock_irqsave(&info->lock,flags);
if (break_state == -1)
set_reg_bits(info, CHA+DAFO, BIT6);
- else
+ else
clear_reg_bits(info, CHA+DAFO, BIT6);
spin_unlock_irqrestore(&info->lock,flags);
}
/* Service an IOCTL request
- *
+ *
* Arguments:
- *
+ *
* tty pointer to tty instance data
* file pointer to associated file object for device
* cmd IOCTL command code
* arg command argument/context
- *
+ *
* Return Value: 0 if success, otherwise error code
*/
static int mgslpc_ioctl(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg)
{
MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__,__LINE__,
info->device_name, cmd );
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_ioctl"))
return -ENODEV;
struct serial_icounter_struct __user *p_cuser; /* user space */
void __user *argp = (void __user *)arg;
unsigned long flags;
-
+
switch (cmd) {
case MGSL_IOCGPARAMS:
return get_params(info, argp);
}
/* Set new termios settings
- *
+ *
* Arguments:
- *
+ *
* tty pointer to tty structure
* termios pointer to buffer to hold returned old termios
*/
{
MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_set_termios %s\n", __FILE__,__LINE__,
tty->driver->name );
-
+
/* just return if nothing has changed */
if ((tty->termios->c_cflag == old_termios->c_cflag)
- && (RELEVANT_IFLAG(tty->termios->c_iflag)
+ && (RELEVANT_IFLAG(tty->termios->c_iflag)
== RELEVANT_IFLAG(old_termios->c_iflag)))
return;
set_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
}
-
+
/* Handle transition away from B0 status */
if (!(old_termios->c_cflag & CBAUD) &&
tty->termios->c_cflag & CBAUD) {
info->serial_signals |= SerialSignal_DTR;
- if (!(tty->termios->c_cflag & CRTSCTS) ||
+ if (!(tty->termios->c_cflag & CRTSCTS) ||
!test_bit(TTY_THROTTLED, &tty->flags)) {
info->serial_signals |= SerialSignal_RTS;
}
set_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
}
-
+
/* Handle turning off CRTSCTS */
if (old_termios->c_cflag & CRTSCTS &&
!(tty->termios->c_cflag & CRTSCTS)) {
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close"))
return;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_close(%s) entry, count=%d\n",
__FILE__,__LINE__, info->device_name, info->count);
-
+
if (!info->count)
return;
if (tty_hung_up_p(filp))
goto cleanup;
-
+
if ((tty->count == 1) && (info->count != 1)) {
/*
* tty->count is 1 and the tty structure will be freed.
"info->count is %d\n", info->count);
info->count = 1;
}
-
+
info->count--;
-
+
/* if at least one open remaining, leave hardware active */
if (info->count)
goto cleanup;
-
+
info->flags |= ASYNC_CLOSING;
-
- /* set tty->closing to notify line discipline to
+
+ /* set tty->closing to notify line discipline to
* only process XON/XOFF characters. Only the N_TTY
* discipline appears to use this (ppp does not).
*/
tty->closing = 1;
-
+
/* wait for transmit data to clear all layers */
-
+
if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) {
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_close(%s) calling tty_wait_until_sent\n",
__FILE__,__LINE__, info->device_name );
tty_wait_until_sent(tty, info->closing_wait);
}
-
+
if (info->flags & ASYNC_INITIALIZED)
mgslpc_wait_until_sent(tty, info->timeout);
tty->driver->flush_buffer(tty);
ldisc_flush_buffer(tty);
-
+
shutdown(info);
-
+
tty->closing = 0;
info->tty = NULL;
-
+
if (info->blocked_open) {
if (info->close_delay) {
msleep_interruptible(jiffies_to_msecs(info->close_delay));
}
wake_up_interruptible(&info->open_wait);
}
-
+
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
+
wake_up_interruptible(&info->close_wait);
-
-cleanup:
+
+cleanup:
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__,__LINE__,
tty->driver->name, info->count);
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_wait_until_sent(%s) entry\n",
__FILE__,__LINE__, info->device_name );
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_wait_until_sent"))
return;
if (!(info->flags & ASYNC_INITIALIZED))
goto exit;
-
+
orig_jiffies = jiffies;
-
+
/* Set check interval to 1/5 of estimated time to
* send a character, and make it at least 1. The check
* interval should also be less than the timeout.
* Note: use tight timings here to satisfy the NIST-PCTS.
- */
-
+ */
+
if ( info->params.data_rate ) {
char_time = info->timeout/(32 * 5);
if (!char_time)
char_time++;
} else
char_time = 1;
-
+
if (timeout)
char_time = min_t(unsigned long, char_time, timeout);
-
+
if (info->params.mode == MGSL_MODE_HDLC) {
while (info->tx_active) {
msleep_interruptible(jiffies_to_msecs(char_time));
break;
}
}
-
+
exit:
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_wait_until_sent(%s) exit\n",
static void mgslpc_hangup(struct tty_struct *tty)
{
MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_hangup(%s)\n",
__FILE__,__LINE__, info->device_name );
-
+
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_hangup"))
return;
mgslpc_flush_buffer(tty);
shutdown(info);
-
- info->count = 0;
+
+ info->count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tty = NULL;
int retval;
int do_clocal = 0, extra_count = 0;
unsigned long flags;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready on %s\n",
__FILE__,__LINE__, tty->driver->name );
* mgslpc_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
-
+
retval = 0;
add_wait_queue(&info->open_wait, &wait);
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready before block on %s count=%d\n",
__FILE__,__LINE__, tty->driver->name, info->count );
}
spin_unlock_irqrestore(&info->lock, flags);
info->blocked_open++;
-
+
while (1) {
if ((tty->termios->c_cflag & CBAUD)) {
spin_lock_irqsave(&info->lock,flags);
set_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
}
-
+
set_current_state(TASK_INTERRUPTIBLE);
-
+
if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)){
retval = (info->flags & ASYNC_HUP_NOTIFY) ?
-EAGAIN : -ERESTARTSYS;
break;
}
-
+
spin_lock_irqsave(&info->lock,flags);
get_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
-
+
if (!(info->flags & ASYNC_CLOSING) &&
(do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {
break;
}
-
+
if (signal_pending(current)) {
retval = -ERESTARTSYS;
break;
}
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready blocking on %s count=%d\n",
__FILE__,__LINE__, tty->driver->name, info->count );
-
+
schedule();
}
-
+
set_current_state(TASK_RUNNING);
remove_wait_queue(&info->open_wait, &wait);
-
+
if (extra_count)
info->count++;
info->blocked_open--;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):block_til_ready after blocking on %s count=%d\n",
__FILE__,__LINE__, tty->driver->name, info->count );
-
+
if (!retval)
info->flags |= ASYNC_NORMAL_ACTIVE;
-
+
return retval;
}
int retval, line;
unsigned long flags;
- /* verify range of specified line number */
+ /* verify range of specified line number */
line = tty->index;
if ((line < 0) || (line >= mgslpc_device_count)) {
printk("%s(%d):mgslpc_open with invalid line #%d.\n",
info = info->next_device;
if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open"))
return -ENODEV;
-
+
tty->driver_data = info;
info->tty = tty;
-
+
if (debug_level >= DEBUG_LEVEL_INFO)
printk("%s(%d):mgslpc_open(%s), old ref count = %d\n",
__FILE__,__LINE__,tty->driver->name, info->count);
-EAGAIN : -ERESTARTSYS);
goto cleanup;
}
-
+
info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
spin_lock_irqsave(&info->netlock, flags);
printk("%s(%d):mgslpc_open(%s) success\n",
__FILE__,__LINE__, info->device_name);
retval = 0;
-
-cleanup:
+
+cleanup:
if (retval) {
if (tty->count == 1)
info->tty = NULL; /* tty layer will release tty struct */
if(info->count)
info->count--;
}
-
+
return retval;
}
spin_lock_irqsave(&info->lock,flags);
get_signals(info);
spin_unlock_irqrestore(&info->lock,flags);
-
+
stat_buf[0] = 0;
stat_buf[1] = 0;
if (info->serial_signals & SerialSignal_RTS)
if (info->icount.txabort)
ret += sprintf(buf+ret, " txabort:%d", info->icount.txabort);
if (info->icount.rxshort)
- ret += sprintf(buf+ret, " rxshort:%d", info->icount.rxshort);
+ ret += sprintf(buf+ret, " rxshort:%d", info->icount.rxshort);
if (info->icount.rxlong)
ret += sprintf(buf+ret, " rxlong:%d", info->icount.rxlong);
if (info->icount.rxover)
if (info->icount.parity)
ret += sprintf(buf+ret, " pe:%d", info->icount.parity);
if (info->icount.brk)
- ret += sprintf(buf+ret, " brk:%d", info->icount.brk);
+ ret += sprintf(buf+ret, " brk:%d", info->icount.brk);
if (info->icount.overrun)
ret += sprintf(buf+ret, " oe:%d", info->icount.overrun);
}
-
+
/* Append serial signal status to end */
ret += sprintf(buf+ret, " %s\n", stat_buf+1);
-
+
ret += sprintf(buf+ret, "txactive=%d bh_req=%d bh_run=%d pending_bh=%x\n",
info->tx_active,info->bh_requested,info->bh_running,
info->pending_bh);
-
+
return ret;
}
int len = 0, l;
off_t begin = 0;
MGSLPC_INFO *info;
-
+
len += sprintf(page, "synclink driver:%s\n", driver_version);
-
+
info = mgslpc_device_list;
while( info ) {
l = line_info(page + len, info);
printk( "Cant allocate rx buffer %s\n", info->device_name);
release_resources(info);
return -ENODEV;
- }
+ }
return 0;
}
/* Add the specified device instance data structure to the
* global linked list of devices and increment the device count.
- *
+ *
* Arguments: info pointer to device instance data
*/
static void mgslpc_add_device(MGSLPC_INFO *info)
info->next_device = NULL;
info->line = mgslpc_device_count;
sprintf(info->device_name,"ttySLP%d",info->line);
-
+
if (info->line < MAX_DEVICE_COUNT) {
if (maxframe[info->line])
info->max_frame_size = maxframe[info->line];
}
mgslpc_device_count++;
-
+
if (!mgslpc_device_list)
mgslpc_device_list = info;
- else {
+ else {
MGSLPC_INFO *current_dev = mgslpc_device_list;
while( current_dev->next_device )
current_dev = current_dev->next_device;
current_dev->next_device = info;
}
-
+
if (info->max_frame_size < 4096)
info->max_frame_size = 4096;
else if (info->max_frame_size > 65535)
info->max_frame_size = 65535;
-
+
printk( "SyncLink PC Card %s:IO=%04X IRQ=%d\n",
info->device_name, info->io_base, info->irq_level);
}
/* Initialize the tty_driver structure */
-
+
serial_driver->owner = THIS_MODULE;
serial_driver->driver_name = "synclink_cs";
serial_driver->name = "ttySLP";
serial_driver = NULL;
goto error;
}
-
+
printk("%s %s, tty major#%d\n",
driver_name, driver_version,
serial_driver->major);
-
+
return 0;
error:
return rc;
}
-static void __exit synclink_cs_exit(void)
+static void __exit synclink_cs_exit(void)
{
synclink_cs_cleanup();
}
unsigned int M, N;
unsigned char val;
- /* note:standard BRG mode is broken in V3.2 chip
- * so enhanced mode is always used
+ /* note:standard BRG mode is broken in V3.2 chip
+ * so enhanced mode is always used
*/
if (rate) {
* divisor = (N+1)*2^M
*
* Note: M *must* not be zero (causes asymetric duty cycle)
- */
+ */
write_reg(info, (unsigned char) (channel + BGR),
(unsigned char) ((M << 6) + N));
val = read_reg(info, (unsigned char) (channel + CCR2)) & 0x3f;
static void enable_auxclk(MGSLPC_INFO *info)
{
unsigned char val;
-
+
/* MODE
*
* 07..06 MDS[1..0] 10 = transparent HDLC mode
* 00 TLP Test Loop, 0 = no loop
*
* 1000 0010
- */
+ */
val = 0x82;
-
- /* channel B RTS is used to enable AUXCLK driver on SP505 */
+
+ /* channel B RTS is used to enable AUXCLK driver on SP505 */
if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed)
val |= BIT2;
write_reg(info, CHB + MODE, val);
-
+
/* CCR0
*
* 07 PU Power Up, 1=active, 0=power down
* 01..00 SM[1..0] Serial Mode, 00=HDLC
*
* 11000000
- */
+ */
write_reg(info, CHB + CCR0, 0xc0);
-
+
/* CCR1
*
* 07 SFLG Shared Flag, 0 = disable shared flags
* 02..00 CM[2..0] Clock Mode
*
* 0001 0111
- */
+ */
write_reg(info, CHB + CCR1, 0x17);
-
+
/* CCR2 (Channel B)
*
* 07..06 BGR[9..8] Baud rate bits 9..8
* 00 DIV, data inversion 0=disabled, 1=enabled
*
* 0011 1000
- */
+ */
if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed)
write_reg(info, CHB + CCR2, 0x38);
else
write_reg(info, CHB + CCR2, 0x30);
-
+
/* CCR4
*
* 07 MCK4 Master Clock Divide by 4, 1=enabled
* 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes
*
* 0101 0000
- */
+ */
write_reg(info, CHB + CCR4, 0x50);
-
+
/* if auxclk not enabled, set internal BRG so
* CTS transitions can be detected (requires TxC)
- */
+ */
if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed)
mgslpc_set_rate(info, CHB, info->params.clock_speed);
else
mgslpc_set_rate(info, CHB, 921600);
}
-static void loopback_enable(MGSLPC_INFO *info)
+static void loopback_enable(MGSLPC_INFO *info)
{
unsigned char val;
-
- /* CCR1:02..00 CM[2..0] Clock Mode = 111 (clock mode 7) */
+
+ /* CCR1:02..00 CM[2..0] Clock Mode = 111 (clock mode 7) */
val = read_reg(info, CHA + CCR1) | (BIT2 + BIT1 + BIT0);
write_reg(info, CHA + CCR1, val);
-
- /* CCR2:04 SSEL Clock source select, 1=submode b */
+
+ /* CCR2:04 SSEL Clock source select, 1=submode b */
val = read_reg(info, CHA + CCR2) | (BIT4 + BIT5);
write_reg(info, CHA + CCR2, val);
-
- /* set LinkSpeed if available, otherwise default to 2Mbps */
+
+ /* set LinkSpeed if available, otherwise default to 2Mbps */
if (info->params.clock_speed)
mgslpc_set_rate(info, CHA, info->params.clock_speed);
else
mgslpc_set_rate(info, CHA, 1843200);
-
- /* MODE:00 TLP Test Loop, 1=loopback enabled */
+
+ /* MODE:00 TLP Test Loop, 1=loopback enabled */
val = read_reg(info, CHA + MODE) | BIT0;
write_reg(info, CHA + MODE, val);
}
unsigned char val;
unsigned char clkmode, clksubmode;
- /* disable all interrupts */
+ /* disable all interrupts */
irq_disable(info, CHA, 0xffff);
irq_disable(info, CHB, 0xffff);
port_irq_disable(info, 0xff);
-
- /* assume clock mode 0a, rcv=RxC xmt=TxC */
+
+ /* assume clock mode 0a, rcv=RxC xmt=TxC */
clkmode = clksubmode = 0;
if (info->params.flags & HDLC_FLAG_RXC_DPLL
&& info->params.flags & HDLC_FLAG_TXC_DPLL) {
- /* clock mode 7a, rcv = DPLL, xmt = DPLL */
+ /* clock mode 7a, rcv = DPLL, xmt = DPLL */
clkmode = 7;
} else if (info->params.flags & HDLC_FLAG_RXC_BRG
&& info->params.flags & HDLC_FLAG_TXC_BRG) {
- /* clock mode 7b, rcv = BRG, xmt = BRG */
+ /* clock mode 7b, rcv = BRG, xmt = BRG */
clkmode = 7;
clksubmode = 1;
} else if (info->params.flags & HDLC_FLAG_RXC_DPLL) {
if (info->params.flags & HDLC_FLAG_TXC_BRG) {
- /* clock mode 6b, rcv = DPLL, xmt = BRG/16 */
+ /* clock mode 6b, rcv = DPLL, xmt = BRG/16 */
clkmode = 6;
clksubmode = 1;
} else {
- /* clock mode 6a, rcv = DPLL, xmt = TxC */
+ /* clock mode 6a, rcv = DPLL, xmt = TxC */
clkmode = 6;
}
} else if (info->params.flags & HDLC_FLAG_TXC_BRG) {
- /* clock mode 0b, rcv = RxC, xmt = BRG */
+ /* clock mode 0b, rcv = RxC, xmt = BRG */
clksubmode = 1;
}
-
+
/* MODE
*
* 07..06 MDS[1..0] 10 = transparent HDLC mode
* 00 TLP Test Loop, 0 = no loop
*
* 1000 0010
- */
+ */
val = 0x82;
if (info->params.loopback)
val |= BIT0;
-
- /* preserve RTS state */
+
+ /* preserve RTS state */
if (info->serial_signals & SerialSignal_RTS)
val |= BIT2;
write_reg(info, CHA + MODE, val);
-
+
/* CCR0
*
* 07 PU Power Up, 1=active, 0=power down
* 01..00 SM[1..0] Serial Mode, 00=HDLC
*
* 11000000
- */
+ */
val = 0xc0;
switch (info->params.encoding)
{
break; // Manchester
}
write_reg(info, CHA + CCR0, val);
-
+
/* CCR1
*
* 07 SFLG Shared Flag, 0 = disable shared flags
* 02..00 CM[2..0] Clock Mode
*
* 0001 0000
- */
+ */
val = 0x10 + clkmode;
write_reg(info, CHA + CCR1, val);
-
+
/* CCR2
*
* 07..06 BGR[9..8] Baud rate bits 9..8
* 00 DIV, data inversion 0=disabled, 1=enabled
*
* 0000 0000
- */
+ */
val = 0x00;
if (clkmode == 2 || clkmode == 3 || clkmode == 6
|| clkmode == 7 || (clkmode == 0 && clksubmode == 1))
if (info->params.encoding == HDLC_ENCODING_NRZB)
val |= BIT0;
write_reg(info, CHA + CCR2, val);
-
+
/* CCR3
*
* 07..06 PRE[1..0] Preamble count 00=1, 01=2, 10=4, 11=8
* 00 PSD DPLL Phase Shift Disable
*
* 0000 0000
- */
+ */
val = 0x00;
if (info->params.crc_type == HDLC_CRC_NONE)
val |= BIT2 + BIT1;
break;
}
write_reg(info, CHA + CCR3, val);
-
- /* PRE - Preamble pattern */
+
+ /* PRE - Preamble pattern */
val = 0;
switch (info->params.preamble)
{
case HDLC_PREAMBLE_PATTERN_ONES: val = 0xff; break;
}
write_reg(info, CHA + PRE, val);
-
+
/* CCR4
*
* 07 MCK4 Master Clock Divide by 4, 1=enabled
* 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes
*
* 0101 0000
- */
+ */
val = 0x50;
write_reg(info, CHA + CCR4, val);
if (info->params.flags & HDLC_FLAG_RXC_DPLL)
mgslpc_set_rate(info, CHA, info->params.clock_speed * 16);
else
mgslpc_set_rate(info, CHA, info->params.clock_speed);
-
+
/* RLCR Receive length check register
*
* 7 1=enable receive length check
* 6..0 Max frame length = (RL + 1) * 32
- */
+ */
write_reg(info, CHA + RLCR, 0);
-
+
/* XBCH Transmit Byte Count High
*
* 07 DMA mode, 0 = interrupt driven
* 03..00 XBC[10..8] Transmit byte count bits 10..8
*
* 0000 0000
- */
+ */
val = 0x00;
if (info->params.flags & HDLC_FLAG_AUTO_DCD)
val |= BIT5;
if (info->params.flags & HDLC_FLAG_AUTO_CTS)
{
irq_enable(info, CHB, IRQ_CTS);
- /* PVR[3] 1=AUTO CTS active */
+ /* PVR[3] 1=AUTO CTS active */
set_reg_bits(info, CHA + PVR, BIT3);
} else
clear_reg_bits(info, CHA + PVR, BIT3);
issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET);
wait_command_complete(info, CHA);
read_reg16(info, CHA + ISR); /* clear pending IRQs */
-
+
/* Master clock mode enabled above to allow reset commands
* to complete even if no data clocks are present.
*
*
* Leave master clock mode enabled for IRQ test because the
* timer IRQ used by the test can only happen in master clock mode.
- */
+ */
if (!info->testing_irq)
clear_reg_bits(info, CHA + CCR0, BIT6);
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s(%d):rx_stop(%s)\n",
__FILE__,__LINE__, info->device_name );
-
- /* MODE:03 RAC Receiver Active, 0=inactive */
+
+ /* MODE:03 RAC Receiver Active, 0=inactive */
clear_reg_bits(info, CHA + MODE, BIT3);
info->rx_enabled = 0;
info->rx_enabled = 0;
info->rx_overflow = 0;
- /* MODE:03 RAC Receiver Active, 1=active */
+ /* MODE:03 RAC Receiver Active, 1=active */
set_reg_bits(info, CHA + MODE, BIT3);
info->rx_enabled = 1;
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s(%d):tx_start(%s)\n",
__FILE__,__LINE__, info->device_name );
-
+
if (info->tx_count) {
/* If auto RTS enabled and RTS is inactive, then assert */
/* RTS and set a flag indicating that the driver should */
if (debug_level >= DEBUG_LEVEL_ISR)
printk("%s(%d):tx_stop(%s)\n",
__FILE__,__LINE__, info->device_name );
-
- del_timer(&info->tx_timer);
+
+ del_timer(&info->tx_timer);
info->tx_enabled = 0;
info->tx_active = 0;
*/
static void reset_device(MGSLPC_INFO *info)
{
- /* power up both channels (set BIT7) */
+ /* power up both channels (set BIT7) */
write_reg(info, CHA + CCR0, 0x80);
write_reg(info, CHB + CCR0, 0x80);
write_reg(info, CHA + MODE, 0);
write_reg(info, CHB + MODE, 0);
-
- /* disable all interrupts */
+
+ /* disable all interrupts */
irq_disable(info, CHA, 0xffff);
irq_disable(info, CHB, 0xffff);
port_irq_disable(info, 0xff);
-
+
/* PCR Port Configuration Register
*
* 07..04 DEC[3..0] Serial I/F select outputs
* 00 DTR output 0=active
*
* 0000 0110
- */
+ */
write_reg(info, PCR, 0x06);
-
+
/* PVR Port Value Register
*
* 07..04 DEC[3..0] Serial I/F select (0000=disabled)
* 0000 0001
*/
// write_reg(info, PVR, PVR_DTR);
-
+
/* IPC Interrupt Port Configuration
*
* 07 VIS 1=Masked interrupts visible
* 01..00 IC[1..0] Interrupt Config, 01=push-pull output, active low
*
* 0000 0101
- */
+ */
write_reg(info, IPC, 0x05);
}
{
unsigned char val;
- /* disable all interrupts */
+ /* disable all interrupts */
irq_disable(info, CHA, 0xffff);
irq_disable(info, CHB, 0xffff);
port_irq_disable(info, 0xff);
-
+
/* MODE
*
* 07 Reserved, 0
* 00 TLP Test Loop, 0 = no loop
*
* 0000 0110
- */
+ */
val = 0x06;
if (info->params.loopback)
val |= BIT0;
-
- /* preserve RTS state */
+
+ /* preserve RTS state */
if (!(info->serial_signals & SerialSignal_RTS))
val |= BIT6;
write_reg(info, CHA + MODE, val);
-
+
/* CCR0
*
* 07 PU Power Up, 1=active, 0=power down
* 01..00 SM[1..0] Serial Mode, 11=Async
*
* 1000 0011
- */
+ */
write_reg(info, CHA + CCR0, 0x83);
-
+
/* CCR1
*
* 07..05 Reserved, 0
* 02..00 CM[2..0] Clock Mode, 111=BRG
*
* 0001 1111
- */
+ */
write_reg(info, CHA + CCR1, 0x1f);
-
+
/* CCR2 (channel A)
*
* 07..06 BGR[9..8] Baud rate bits 9..8
* 00 DIV, data inversion 0=disabled, 1=enabled
*
* 0001 0000
- */
+ */
write_reg(info, CHA + CCR2, 0x10);
-
+
/* CCR3
*
* 07..01 Reserved, 0
* 00 PSD DPLL Phase Shift Disable
*
* 0000 0000
- */
+ */
write_reg(info, CHA + CCR3, 0);
-
+
/* CCR4
*
* 07 MCK4 Master Clock Divide by 4, 1=enabled
* 03..00 Reserved, must be 0
*
* 0101 0000
- */
+ */
write_reg(info, CHA + CCR4, 0x50);
mgslpc_set_rate(info, CHA, info->params.data_rate * 16);
-
+
/* DAFO Data Format
*
* 07 Reserved, 0
* 02 PAREN Parity Enable
* 01..00 CHL[1..0] Character Length (00=8, 01=7)
*
- */
+ */
val = 0x00;
if (info->params.data_bits != 8)
val |= BIT0; /* 7 bits */
val |= BIT4;
}
write_reg(info, CHA + DAFO, val);
-
+
/* RFC Rx FIFO Control
*
* 07 Reserved, 0
* 00 TCDE Terminate Char Detect Enable, 0=disabled
*
* 0101 1100
- */
+ */
write_reg(info, CHA + RFC, 0x5c);
-
+
/* RLCR Receive length check register
*
* Max frame length = (RL + 1) * 32
- */
+ */
write_reg(info, CHA + RLCR, 0);
-
+
/* XBCH Transmit Byte Count High
*
* 07 DMA mode, 0 = interrupt driven
* 03..00 XBC[10..8] Transmit byte count bits 10..8
*
* 0000 0000
- */
+ */
val = 0x00;
if (info->params.flags & HDLC_FLAG_AUTO_DCD)
val |= BIT5;
write_reg(info, CHA + XBCH, val);
if (info->params.flags & HDLC_FLAG_AUTO_CTS)
irq_enable(info, CHA, IRQ_CTS);
-
- /* MODE:03 RAC Receiver Active, 1=active */
+
+ /* MODE:03 RAC Receiver Active, 1=active */
set_reg_bits(info, CHA + MODE, BIT3);
enable_auxclk(info);
if (info->params.flags & HDLC_FLAG_AUTO_CTS) {
irq_enable(info, CHB, IRQ_CTS);
- /* PVR[3] 1=AUTO CTS active */
+ /* PVR[3] 1=AUTO CTS active */
set_reg_bits(info, CHA + PVR, BIT3);
} else
clear_reg_bits(info, CHA + PVR, BIT3);
*/
static void tx_set_idle(MGSLPC_INFO *info)
{
- /* Note: ESCC2 only supports flags and one idle modes */
+ /* Note: ESCC2 only supports flags and one idle modes */
if (info->idle_mode == HDLC_TXIDLE_FLAGS)
set_reg_bits(info, CHA + CCR1, BIT3);
else
static void get_signals(MGSLPC_INFO *info)
{
unsigned char status = 0;
-
- /* preserve DTR and RTS */
+
+ /* preserve DTR and RTS */
info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS;
if (read_reg(info, CHB + VSTR) & BIT7)
unsigned long flags;
struct tty_struct *tty = info->tty;
int return_frame = 0;
-
+
if (info->rx_frame_count == 0)
return 0;
if (debug_level >= DEBUG_LEVEL_BH)
printk("%s(%d):rx_get_frame(%s) status=%04X size=%d\n",
__FILE__,__LINE__,info->device_name,status,framesize);
-
+
if (debug_level >= DEBUG_LEVEL_DATA)
- trace_block(info, buf->data, framesize, 0);
-
+ trace_block(info, buf->data, framesize, 0);
+
if (framesize) {
if ((info->params.crc_type & HDLC_CRC_RETURN_EX &&
framesize+1 > info->max_frame_size) ||
static BOOLEAN register_test(MGSLPC_INFO *info)
{
- static unsigned char patterns[] =
+ static unsigned char patterns[] =
{ 0x00, 0xff, 0xaa, 0x55, 0x69, 0x96, 0x0f };
static unsigned int count = ARRAY_SIZE(patterns);
unsigned int i;
while(end_time-- && !info->irq_occurred) {
msleep_interruptible(10);
}
-
+
info->testing_irq = FALSE;
spin_lock_irqsave(&info->lock,flags);
reset_device(info);
spin_unlock_irqrestore(&info->lock,flags);
-
+
return info->irq_occurred ? TRUE : FALSE;
}
printk("%s tx data:\n",info->device_name);
else
printk("%s rx data:\n",info->device_name);
-
+
while(count) {
if (count > 16)
linecount = 16;
else
linecount = count;
-
+
for(i=0;i<linecount;i++)
printk("%02X ",(unsigned char)data[i]);
for(;i<17;i++)
printk(".");
}
printk("\n");
-
+
data += linecount;
count -= linecount;
}
{
MGSLPC_INFO *info = (MGSLPC_INFO*)context;
unsigned long flags;
-
+
if ( debug_level >= DEBUG_LEVEL_INFO )
printk( "%s(%d):tx_timeout(%s)\n",
__FILE__,__LINE__,info->device_name);
info->tx_count = info->tx_put = info->tx_get = 0;
spin_unlock_irqrestore(&info->lock,flags);
-
+
#if SYNCLINK_GENERIC_HDLC
if (info->netcount)
hdlcdev_tx_done(info);
projects / linux-2.6 / commitdiff