/*
- * $Id: synclink_gt.c,v 4.25 2006/02/06 21:20:33 paulkf Exp $
+ * $Id: synclink_gt.c,v 4.50 2007/07/25 19:29:25 paulkf Exp $
*
* Device driver for Microgate SyncLink GT serial adapters.
*
#include <linux/bitops.h>
#include <linux/workqueue.h>
#include <linux/hdlc.h>
+#include <linux/synclink.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/types.h>
#include <asm/uaccess.h>
-#include "linux/synclink.h"
-
-#ifdef CONFIG_HDLC_MODULE
-#define CONFIG_HDLC 1
+#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_GT_MODULE))
+#define SYNCLINK_GENERIC_HDLC 1
+#else
+#define SYNCLINK_GENERIC_HDLC 0
#endif
/*
* module identification
*/
static char *driver_name = "SyncLink GT";
-static char *driver_version = "$Revision: 4.25 $";
+static char *driver_version = "$Revision: 4.50 $";
static char *tty_driver_name = "synclink_gt";
static char *tty_dev_prefix = "ttySLG";
MODULE_LICENSE("GPL");
#define MGSL_MAGIC 0x5401
-#define MAX_DEVICES 12
+#define MAX_DEVICES 32
static struct pci_device_id pci_table[] = {
{PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
.remove = __devexit_p(remove_one),
};
-static int pci_registered;
+static bool pci_registered;
/*
* module configuration and status
/*
* tty support and callbacks
*/
-#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-
static struct tty_driver *serial_driver;
static int open(struct tty_struct *tty, struct file * filp);
static void close(struct tty_struct *tty, struct file * filp);
static void hangup(struct tty_struct *tty);
-static void set_termios(struct tty_struct *tty, struct termios *old_termios);
+static void set_termios(struct tty_struct *tty, struct ktermios *old_termios);
static int write(struct tty_struct *tty, const unsigned char *buf, int count);
static void put_char(struct tty_struct *tty, unsigned char ch);
/*
* generic HDLC support and callbacks
*/
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
#define dev_to_port(D) (dev_to_hdlc(D)->priv)
static void hdlcdev_tx_done(struct slgt_info *info);
static void hdlcdev_rx(struct slgt_info *info, char *buf, int size);
*/
struct slgt_desc
{
- unsigned short count;
- unsigned short status;
- unsigned int pbuf; /* physical address of data buffer */
- unsigned int next; /* physical address of next descriptor */
+ __le16 count;
+ __le16 status;
+ __le32 pbuf; /* physical address of data buffer */
+ __le32 next; /* physical address of next descriptor */
/* driver book keeping */
char *buf; /* virtual address of data buffer */
struct work_struct task;
u32 pending_bh;
- int bh_requested;
- int bh_running;
+ bool bh_requested;
+ bool bh_running;
int isr_overflow;
- int irq_requested; /* nonzero if IRQ requested */
- int irq_occurred; /* for diagnostics use */
+ bool irq_requested; /* true if IRQ requested */
+ bool irq_occurred; /* for diagnostics use */
/* device configuration */
unsigned char __iomem * reg_addr; /* memory mapped registers address */
u32 phys_reg_addr;
- int reg_addr_requested;
+ bool reg_addr_requested;
MGSL_PARAMS params; /* communications parameters */
u32 idle_mode;
/* device status */
- int rx_enabled;
- int rx_restart;
+ bool rx_enabled;
+ bool rx_restart;
- int tx_enabled;
- int tx_active;
+ bool tx_enabled;
+ bool tx_active;
unsigned char signals; /* serial signal states */
int init_error; /* initialization error */
char flag_buf[MAX_ASYNC_BUFFER_SIZE];
char char_buf[MAX_ASYNC_BUFFER_SIZE];
- BOOLEAN drop_rts_on_tx_done;
+ bool drop_rts_on_tx_done;
struct _input_signal_events input_signal_events;
int dcd_chkcount; /* check counts to prevent */
int netcount;
int dosyncppp;
spinlock_t netlock;
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
struct net_device *netdev;
#endif
#define DESC_LIST_SIZE 4096
#define MASK_PARITY BIT1
-#define MASK_FRAMING BIT2
-#define MASK_BREAK BIT3
+#define MASK_FRAMING BIT0
+#define MASK_BREAK BIT14
#define MASK_OVERRUN BIT4
#define GSR 0x00 /* global status */
static void reset_adapter(struct slgt_info *info);
static void reset_port(struct slgt_info *info);
static void async_mode(struct slgt_info *info);
-static void hdlc_mode(struct slgt_info *info);
+static void sync_mode(struct slgt_info *info);
static void rx_stop(struct slgt_info *info);
static void rx_start(struct slgt_info *info);
static void reset_rbufs(struct slgt_info *info);
static void free_rbufs(struct slgt_info *info, unsigned int first, unsigned int last);
static void rdma_reset(struct slgt_info *info);
-static int rx_get_frame(struct slgt_info *info);
-static int rx_get_buf(struct slgt_info *info);
+static bool rx_get_frame(struct slgt_info *info);
+static bool rx_get_buf(struct slgt_info *info);
static void tx_start(struct slgt_info *info);
static void tx_stop(struct slgt_info *info);
static unsigned int free_tbuf_count(struct slgt_info *info);
static void reset_tbufs(struct slgt_info *info);
static void tdma_reset(struct slgt_info *info);
+static void tdma_start(struct slgt_info *info);
static void tx_load(struct slgt_info *info, const char *buf, unsigned int count);
static void get_signals(struct slgt_info *info);
static void set_rate(struct slgt_info *info, u32 data_rate);
static int bh_action(struct slgt_info *info);
-static void bh_handler(void* context);
+static void bh_handler(struct work_struct *work);
static void bh_transmit(struct slgt_info *info);
static void isr_serial(struct slgt_info *info);
static void isr_rdma(struct slgt_info *info);
static void isr_txeom(struct slgt_info *info, unsigned short status);
static void isr_tdma(struct slgt_info *info);
-static irqreturn_t slgt_interrupt(int irq, void *dev_id, struct pt_regs * regs);
static int alloc_dma_bufs(struct slgt_info *info);
static void free_dma_bufs(struct slgt_info *info);
wake_up_interruptible(&info->open_wait);
}
-static void set_termios(struct tty_struct *tty, struct termios *old_termios)
+static void set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
struct slgt_info *info = tty->driver_data;
unsigned long flags;
DBGINFO(("%s set_termios\n", 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(old_termios->c_iflag)))
- return;
-
change_params(info);
/* Handle transition to B0 status */
if (!count)
goto cleanup;
- if (info->params.mode == MGSL_MODE_RAW) {
+ if (info->params.mode == MGSL_MODE_RAW ||
+ info->params.mode == MGSL_MODE_MONOSYNC ||
+ info->params.mode == MGSL_MODE_BISYNC) {
unsigned int bufs_needed = (count/DMABUFSIZE);
unsigned int bufs_free = free_tbuf_count(info);
if (count % DMABUFSIZE)
spin_lock_irqsave(&info->lock,flags);
if (!info->tx_active)
tx_start(info);
+ else
+ tdma_start(info);
spin_unlock_irqrestore(&info->lock,flags);
}
info->tx_count = 0;
spin_unlock_irqrestore(&info->lock,flags);
- wake_up_interruptible(&tty->write_wait);
tty_wakeup(tty);
}
}
/*
+ * support for 32 bit ioctl calls on 64 bit systems
+ */
+#ifdef CONFIG_COMPAT
+static long get_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *user_params)
+{
+ struct MGSL_PARAMS32 tmp_params;
+
+ DBGINFO(("%s get_params32\n", info->device_name));
+ tmp_params.mode = (compat_ulong_t)info->params.mode;
+ tmp_params.loopback = info->params.loopback;
+ tmp_params.flags = info->params.flags;
+ tmp_params.encoding = info->params.encoding;
+ tmp_params.clock_speed = (compat_ulong_t)info->params.clock_speed;
+ tmp_params.addr_filter = info->params.addr_filter;
+ tmp_params.crc_type = info->params.crc_type;
+ tmp_params.preamble_length = info->params.preamble_length;
+ tmp_params.preamble = info->params.preamble;
+ tmp_params.data_rate = (compat_ulong_t)info->params.data_rate;
+ tmp_params.data_bits = info->params.data_bits;
+ tmp_params.stop_bits = info->params.stop_bits;
+ tmp_params.parity = info->params.parity;
+ if (copy_to_user(user_params, &tmp_params, sizeof(struct MGSL_PARAMS32)))
+ return -EFAULT;
+ return 0;
+}
+
+static long set_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *new_params)
+{
+ struct MGSL_PARAMS32 tmp_params;
+
+ DBGINFO(("%s set_params32\n", info->device_name));
+ if (copy_from_user(&tmp_params, new_params, sizeof(struct MGSL_PARAMS32)))
+ return -EFAULT;
+
+ spin_lock(&info->lock);
+ info->params.mode = tmp_params.mode;
+ info->params.loopback = tmp_params.loopback;
+ info->params.flags = tmp_params.flags;
+ info->params.encoding = tmp_params.encoding;
+ info->params.clock_speed = tmp_params.clock_speed;
+ info->params.addr_filter = tmp_params.addr_filter;
+ info->params.crc_type = tmp_params.crc_type;
+ info->params.preamble_length = tmp_params.preamble_length;
+ info->params.preamble = tmp_params.preamble;
+ info->params.data_rate = tmp_params.data_rate;
+ info->params.data_bits = tmp_params.data_bits;
+ info->params.stop_bits = tmp_params.stop_bits;
+ info->params.parity = tmp_params.parity;
+ spin_unlock(&info->lock);
+
+ change_params(info);
+
+ return 0;
+}
+
+static long slgt_compat_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct slgt_info *info = tty->driver_data;
+ int rc = -ENOIOCTLCMD;
+
+ if (sanity_check(info, tty->name, "compat_ioctl"))
+ return -ENODEV;
+ DBGINFO(("%s compat_ioctl() cmd=%08X\n", info->device_name, cmd));
+
+ switch (cmd) {
+
+ case MGSL_IOCSPARAMS32:
+ rc = set_params32(info, compat_ptr(arg));
+ break;
+
+ case MGSL_IOCGPARAMS32:
+ rc = get_params32(info, compat_ptr(arg));
+ break;
+
+ case MGSL_IOCGPARAMS:
+ case MGSL_IOCSPARAMS:
+ case MGSL_IOCGTXIDLE:
+ case MGSL_IOCGSTATS:
+ case MGSL_IOCWAITEVENT:
+ case MGSL_IOCGIF:
+ case MGSL_IOCSGPIO:
+ case MGSL_IOCGGPIO:
+ case MGSL_IOCWAITGPIO:
+ case TIOCGICOUNT:
+ rc = ioctl(tty, file, cmd, (unsigned long)(compat_ptr(arg)));
+ break;
+
+ case MGSL_IOCSTXIDLE:
+ case MGSL_IOCTXENABLE:
+ case MGSL_IOCRXENABLE:
+ case MGSL_IOCTXABORT:
+ case TIOCMIWAIT:
+ case MGSL_IOCSIF:
+ rc = ioctl(tty, file, cmd, arg);
+ break;
+ }
+
+ DBGINFO(("%s compat_ioctl() cmd=%08X rc=%d\n", info->device_name, cmd, rc));
+ return rc;
+}
+#else
+#define slgt_compat_ioctl NULL
+#endif /* ifdef CONFIG_COMPAT */
+
+/*
* proc fs support
*/
static inline int line_info(char *buf, struct slgt_info *info)
spin_unlock_irqrestore(&info->lock,flags);
}
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
/**
* called by generic HDLC layer when protocol selected (PPP, frame relay, etc.)
int rc;
unsigned long flags;
+ if (!try_module_get(THIS_MODULE))
+ return -EBUSY;
+
DBGINFO(("%s hdlcdev_open\n", dev->name));
/* generic HDLC layer open processing */
info->netcount=0;
spin_unlock_irqrestore(&info->netlock, flags);
+ module_put(THIS_MODULE);
return 0;
}
stat = 0;
- if ((status = *(p+1) & (BIT9 + BIT8))) {
- if (status & BIT9)
+ if ((status = *(p+1) & (BIT1 + BIT0))) {
+ if (status & BIT1)
icount->parity++;
- else if (status & BIT8)
+ else if (status & BIT0)
icount->frame++;
/* discard char if tty control flags say so */
if (status & info->ignore_status_mask)
continue;
- if (status & BIT9)
+ if (status & BIT1)
stat = TTY_PARITY;
- else if (status & BIT8)
+ else if (status & BIT0)
stat = TTY_FRAME;
}
if (tty) {
if (i < count) {
/* receive buffer not completed */
info->rbuf_index += i;
- info->rx_timer.expires = jiffies + 1;
- add_timer(&info->rx_timer);
+ mod_timer(&info->rx_timer, jiffies + 1);
break;
}
rc = BH_STATUS;
} else {
/* Mark BH routine as complete */
- info->bh_running = 0;
- info->bh_requested = 0;
+ info->bh_running = false;
+ info->bh_requested = false;
rc = 0;
}
/*
* perform bottom half processing
*/
-static void bh_handler(void* context)
+static void bh_handler(struct work_struct *work)
{
- struct slgt_info *info = context;
+ struct slgt_info *info = container_of(work, struct slgt_info, task);
int action;
if (!info)
return;
- info->bh_running = 1;
+ info->bh_running = true;
while((action = bh_action(info))) {
switch (action) {
while(rx_get_frame(info));
break;
case MGSL_MODE_RAW:
+ case MGSL_MODE_MONOSYNC:
+ case MGSL_MODE_BISYNC:
while(rx_get_buf(info));
break;
}
struct tty_struct *tty = info->tty;
DBGBH(("%s bh_transmit\n", info->device_name));
- if (tty) {
+ if (tty)
tty_wakeup(tty);
- wake_up_interruptible(&tty->write_wait);
- }
}
-static void dsr_change(struct slgt_info *info)
+static void dsr_change(struct slgt_info *info, unsigned short status)
{
- get_signals(info);
+ if (status & BIT3) {
+ info->signals |= SerialSignal_DSR;
+ info->input_signal_events.dsr_up++;
+ } else {
+ info->signals &= ~SerialSignal_DSR;
+ info->input_signal_events.dsr_down++;
+ }
DBGISR(("dsr_change %s signals=%04X\n", info->device_name, info->signals));
if ((info->dsr_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) {
slgt_irq_off(info, IRQ_DSR);
return;
}
info->icount.dsr++;
- if (info->signals & SerialSignal_DSR)
- info->input_signal_events.dsr_up++;
- else
- info->input_signal_events.dsr_down++;
wake_up_interruptible(&info->status_event_wait_q);
wake_up_interruptible(&info->event_wait_q);
info->pending_bh |= BH_STATUS;
}
-static void cts_change(struct slgt_info *info)
+static void cts_change(struct slgt_info *info, unsigned short status)
{
- get_signals(info);
+ if (status & BIT2) {
+ info->signals |= SerialSignal_CTS;
+ info->input_signal_events.cts_up++;
+ } else {
+ info->signals &= ~SerialSignal_CTS;
+ info->input_signal_events.cts_down++;
+ }
DBGISR(("cts_change %s signals=%04X\n", info->device_name, info->signals));
if ((info->cts_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) {
slgt_irq_off(info, IRQ_CTS);
return;
}
info->icount.cts++;
- if (info->signals & SerialSignal_CTS)
- info->input_signal_events.cts_up++;
- else
- info->input_signal_events.cts_down++;
wake_up_interruptible(&info->status_event_wait_q);
wake_up_interruptible(&info->event_wait_q);
info->pending_bh |= BH_STATUS;
}
}
-static void dcd_change(struct slgt_info *info)
+static void dcd_change(struct slgt_info *info, unsigned short status)
{
- get_signals(info);
+ if (status & BIT1) {
+ info->signals |= SerialSignal_DCD;
+ info->input_signal_events.dcd_up++;
+ } else {
+ info->signals &= ~SerialSignal_DCD;
+ info->input_signal_events.dcd_down++;
+ }
DBGISR(("dcd_change %s signals=%04X\n", info->device_name, info->signals));
if ((info->dcd_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) {
slgt_irq_off(info, IRQ_DCD);
return;
}
info->icount.dcd++;
- if (info->signals & SerialSignal_DCD) {
- info->input_signal_events.dcd_up++;
- } else {
- info->input_signal_events.dcd_down++;
- }
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
if (info->netcount) {
if (info->signals & SerialSignal_DCD)
netif_carrier_on(info->netdev);
}
}
-static void ri_change(struct slgt_info *info)
+static void ri_change(struct slgt_info *info, unsigned short status)
{
- get_signals(info);
+ if (status & BIT0) {
+ info->signals |= SerialSignal_RI;
+ info->input_signal_events.ri_up++;
+ } else {
+ info->signals &= ~SerialSignal_RI;
+ info->input_signal_events.ri_down++;
+ }
DBGISR(("ri_change %s signals=%04X\n", info->device_name, info->signals));
if ((info->ri_chkcount)++ == IO_PIN_SHUTDOWN_LIMIT) {
slgt_irq_off(info, IRQ_RI);
return;
}
- info->icount.dcd++;
- if (info->signals & SerialSignal_RI) {
- info->input_signal_events.ri_up++;
- } else {
- info->input_signal_events.ri_down++;
- }
+ info->icount.rng++;
wake_up_interruptible(&info->status_event_wait_q);
wake_up_interruptible(&info->event_wait_q);
info->pending_bh |= BH_STATUS;
wr_reg16(info, SSR, status); /* clear pending */
- info->irq_occurred = 1;
+ info->irq_occurred = true;
if (info->params.mode == MGSL_MODE_ASYNC) {
if (status & IRQ_TXIDLE) {
}
if (status & IRQ_DSR)
- dsr_change(info);
+ dsr_change(info, status);
if (status & IRQ_CTS)
- cts_change(info);
+ cts_change(info, status);
if (status & IRQ_DCD)
- dcd_change(info);
+ dcd_change(info, status);
if (status & IRQ_RI)
- ri_change(info);
+ ri_change(info, status);
}
static void isr_rdma(struct slgt_info *info)
if (status & (BIT5 + BIT4)) {
DBGISR(("%s isr_rdma rx_restart=1\n", info->device_name));
- info->rx_restart = 1;
+ info->rx_restart = true;
}
info->pending_bh |= BH_RECEIVE;
}
info->icount.txok++;
}
- info->tx_active = 0;
+ info->tx_active = false;
info->tx_count = 0;
del_timer(&info->tx_timer);
if (info->params.mode != MGSL_MODE_ASYNC && info->drop_rts_on_tx_done) {
info->signals &= ~SerialSignal_RTS;
- info->drop_rts_on_tx_done = 0;
+ info->drop_rts_on_tx_done = false;
set_signals(info);
}
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
if (info->netcount)
hdlcdev_tx_done(info);
else
*
* irq interrupt number
* dev_id device ID supplied during interrupt registration
- * regs interrupted processor context
*/
-static irqreturn_t slgt_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+static irqreturn_t slgt_interrupt(int dummy, void *dev_id)
{
- struct slgt_info *info;
+ struct slgt_info *info = dev_id;
unsigned int gsr;
unsigned int i;
- DBGISR(("slgt_interrupt irq=%d entry\n", irq));
-
- info = dev_id;
- if (!info)
- return IRQ_NONE;
+ DBGISR(("slgt_interrupt irq=%d entry\n", info->irq_level));
spin_lock(&info->lock);
while((gsr = rd_reg32(info, GSR) & 0xffffff00)) {
DBGISR(("%s gsr=%08x\n", info->device_name, gsr));
- info->irq_occurred = 1;
+ info->irq_occurred = true;
for(i=0; i < info->port_count ; i++) {
if (info->port_array[i] == NULL)
continue;
!port->bh_requested) {
DBGISR(("%s bh queued\n", port->device_name));
schedule_work(&port->task);
- port->bh_requested = 1;
+ port->bh_requested = true;
}
}
spin_unlock(&info->lock);
- DBGISR(("slgt_interrupt irq=%d exit\n", irq));
+ DBGISR(("slgt_interrupt irq=%d exit\n", info->irq_level));
return IRQ_HANDLED;
}
rx_stop(info);
tx_stop(info);
- if (info->params.mode == MGSL_MODE_HDLC ||
- info->params.mode == MGSL_MODE_RAW ||
+ if (info->params.mode != MGSL_MODE_ASYNC ||
info->netcount)
- hdlc_mode(info);
+ sync_mode(info);
else
async_mode(info);
if (enable) {
if (!info->rx_enabled)
rx_start(info);
+ else if (enable == 2) {
+ /* force hunt mode (write 1 to RCR[3]) */
+ wr_reg16(info, RCR, rd_reg16(info, RCR) | BIT3);
+ }
} else {
if (info->rx_enabled)
rx_stop(info);
{
DECLARE_WAITQUEUE(wait, current);
int retval;
- int do_clocal = 0, extra_count = 0;
+ bool do_clocal = false;
+ bool extra_count = false;
unsigned long flags;
DBGINFO(("%s block_til_ready\n", tty->driver->name));
}
if (tty->termios->c_cflag & CLOCAL)
- do_clocal = 1;
+ do_clocal = true;
/* Wait for carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
spin_lock_irqsave(&info->lock, flags);
if (!tty_hung_up_p(filp)) {
- extra_count = 1;
+ extra_count = true;
info->count--;
}
spin_unlock_irqrestore(&info->lock, flags);
goto errout;
}
else
- info->reg_addr_requested = 1;
+ info->reg_addr_requested = true;
info->reg_addr = ioremap(info->phys_reg_addr, SLGT_REG_SIZE);
if (!info->reg_addr) {
{
if (info->irq_requested) {
free_irq(info->irq_level, info);
- info->irq_requested = 0;
+ info->irq_requested = false;
}
if (info->reg_addr_requested) {
release_mem_region(info->phys_reg_addr, SLGT_REG_SIZE);
- info->reg_addr_requested = 0;
+ info->reg_addr_requested = false;
}
if (info->reg_addr) {
devstr, info->device_name, info->phys_reg_addr,
info->irq_level, info->max_frame_size);
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
hdlcdev_init(info);
#endif
}
{
struct slgt_info *info;
- info = kmalloc(sizeof(struct slgt_info), GFP_KERNEL);
+ info = kzalloc(sizeof(struct slgt_info), GFP_KERNEL);
if (!info) {
DBGERR(("%s device alloc failed adapter=%d port=%d\n",
driver_name, adapter_num, port_num));
} else {
- memset(info, 0, sizeof(struct slgt_info));
info->magic = MGSL_MAGIC;
- INIT_WORK(&info->task, bh_handler, info);
+ INIT_WORK(&info->task, bh_handler);
info->max_frame_size = 4096;
info->raw_rx_size = DMABUFSIZE;
info->close_delay = 5*HZ/10;
info->adapter_num = adapter_num;
info->port_num = port_num;
- init_timer(&info->tx_timer);
- info->tx_timer.data = (unsigned long)info;
- info->tx_timer.function = tx_timeout;
-
- init_timer(&info->rx_timer);
- info->rx_timer.data = (unsigned long)info;
- info->rx_timer.function = rx_timeout;
+ setup_timer(&info->tx_timer, tx_timeout, (unsigned long)info);
+ setup_timer(&info->rx_timer, rx_timeout, (unsigned long)info);
/* Copy configuration info to device instance data */
info->pdev = pdev;
port_array[0]->device_name,
port_array[0]->irq_level));
} else {
- port_array[0]->irq_requested = 1;
+ port_array[0]->irq_requested = true;
adapter_test(port_array[0]);
for (i=1 ; i < port_count ; i++) {
port_array[i]->init_error = port_array[0]->init_error;
}
}
}
+
+ for (i=0; i < port_count; ++i)
+ tty_register_device(serial_driver, port_array[i]->line, &(port_array[i]->pdev->dev));
}
static int __devinit init_one(struct pci_dev *dev,
{
}
-static struct tty_operations ops = {
+static const struct tty_operations ops = {
.open = open,
.close = close,
.write = write,
.chars_in_buffer = chars_in_buffer,
.flush_buffer = flush_buffer,
.ioctl = ioctl,
+ .compat_ioctl = slgt_compat_ioctl,
.throttle = throttle,
.unthrottle = unthrottle,
.send_xchar = send_xchar,
printk("unload %s %s\n", driver_name, driver_version);
if (serial_driver) {
+ for (info=slgt_device_list ; info != NULL ; info=info->next_device)
+ tty_unregister_device(serial_driver, info->line);
if ((rc = tty_unregister_driver(serial_driver)))
DBGERR(("tty_unregister_driver error=%d\n", rc));
put_tty_driver(serial_driver);
/* release devices */
info = slgt_device_list;
while(info) {
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
hdlcdev_exit(info);
#endif
free_dma_bufs(info);
printk("%s %s\n", driver_name, driver_version);
- slgt_device_count = 0;
- if ((rc = pci_register_driver(&pci_driver)) < 0) {
- printk("%s pci_register_driver error=%d\n", driver_name, rc);
- return rc;
- }
- pci_registered = 1;
-
- if (!slgt_device_list) {
- printk("%s no devices found\n",driver_name);
- return -ENODEV;
- }
-
serial_driver = alloc_tty_driver(MAX_DEVICES);
if (!serial_driver) {
- rc = -ENOMEM;
- goto error;
+ printk("%s can't allocate tty driver\n", driver_name);
+ return -ENOMEM;
}
/* Initialize the tty_driver structure */
serial_driver->init_termios = tty_std_termios;
serial_driver->init_termios.c_cflag =
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- serial_driver->flags = TTY_DRIVER_REAL_RAW;
+ serial_driver->init_termios.c_ispeed = 9600;
+ serial_driver->init_termios.c_ospeed = 9600;
+ serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
tty_set_operations(serial_driver, &ops);
if ((rc = tty_register_driver(serial_driver)) < 0) {
DBGERR(("%s can't register serial driver\n", driver_name));
driver_name, driver_version,
serial_driver->major);
+ slgt_device_count = 0;
+ if ((rc = pci_register_driver(&pci_driver)) < 0) {
+ printk("%s pci_register_driver error=%d\n", driver_name, rc);
+ goto error;
+ }
+ pci_registered = true;
+
+ if (!slgt_device_list)
+ printk("%s no devices found\n",driver_name);
+
return 0;
error:
rdma_reset(info);
- info->rx_enabled = 0;
- info->rx_restart = 0;
+ info->rx_enabled = false;
+ info->rx_restart = false;
}
static void rx_start(struct slgt_info *info)
/* enable receiver */
wr_reg16(info, RCR, (unsigned short)(rd_reg16(info, RCR) | BIT1));
- info->rx_restart = 0;
- info->rx_enabled = 1;
+ info->rx_restart = false;
+ info->rx_enabled = true;
}
static void tx_start(struct slgt_info *info)
{
if (!info->tx_enabled) {
wr_reg16(info, TCR,
- (unsigned short)(rd_reg16(info, TCR) | BIT1));
- info->tx_enabled = TRUE;
+ (unsigned short)((rd_reg16(info, TCR) | BIT1) & ~BIT2));
+ info->tx_enabled = true;
}
if (info->tx_count) {
- info->drop_rts_on_tx_done = 0;
+ info->drop_rts_on_tx_done = false;
if (info->params.mode != MGSL_MODE_ASYNC) {
if (info->params.flags & HDLC_FLAG_AUTO_RTS) {
if (!(info->signals & SerialSignal_RTS)) {
info->signals |= SerialSignal_RTS;
set_signals(info);
- info->drop_rts_on_tx_done = 1;
+ info->drop_rts_on_tx_done = true;
}
}
slgt_irq_on(info, IRQ_TXUNDER + IRQ_TXIDLE);
/* clear tx idle and underrun status bits */
wr_reg16(info, SSR, (unsigned short)(IRQ_TXIDLE + IRQ_TXUNDER));
-
- if (!(rd_reg32(info, TDCSR) & BIT0)) {
- /* tx DMA stopped, restart tx DMA */
- tdma_reset(info);
- /* set 1st descriptor address */
- wr_reg32(info, TDDAR, info->tbufs[info->tbuf_start].pdesc);
- if (info->params.mode == MGSL_MODE_RAW)
- wr_reg32(info, TDCSR, BIT2 + BIT0); /* IRQ + DMA enable */
- else
- wr_reg32(info, TDCSR, BIT0); /* DMA enable */
- }
-
- if (info->params.mode != MGSL_MODE_RAW) {
- info->tx_timer.expires = jiffies + msecs_to_jiffies(5000);
- add_timer(&info->tx_timer);
- }
+ if (info->params.mode == MGSL_MODE_HDLC)
+ mod_timer(&info->tx_timer, jiffies +
+ msecs_to_jiffies(5000));
} else {
- tdma_reset(info);
- /* set 1st descriptor address */
- wr_reg32(info, TDDAR, info->tbufs[info->tbuf_start].pdesc);
-
slgt_irq_off(info, IRQ_TXDATA);
slgt_irq_on(info, IRQ_TXIDLE);
/* clear tx idle status bit */
wr_reg16(info, SSR, IRQ_TXIDLE);
-
- /* enable tx DMA */
- wr_reg32(info, TDCSR, BIT0);
}
+ tdma_start(info);
+ info->tx_active = true;
+ }
+}
+
+/*
+ * start transmit DMA if inactive and there are unsent buffers
+ */
+static void tdma_start(struct slgt_info *info)
+{
+ unsigned int i;
+
+ if (rd_reg32(info, TDCSR) & BIT0)
+ return;
- info->tx_active = 1;
+ /* transmit DMA inactive, check for unsent buffers */
+ i = info->tbuf_start;
+ while (!desc_count(info->tbufs[i])) {
+ if (++i == info->tbuf_count)
+ i = 0;
+ if (i == info->tbuf_current)
+ return;
+ }
+ info->tbuf_start = i;
+
+ /* there are unsent buffers, start transmit DMA */
+
+ /* reset needed if previous error condition */
+ tdma_reset(info);
+
+ /* set 1st descriptor address */
+ wr_reg32(info, TDDAR, info->tbufs[info->tbuf_start].pdesc);
+ switch(info->params.mode) {
+ case MGSL_MODE_RAW:
+ case MGSL_MODE_MONOSYNC:
+ case MGSL_MODE_BISYNC:
+ wr_reg32(info, TDCSR, BIT2 + BIT0); /* IRQ + DMA enable */
+ break;
+ default:
+ wr_reg32(info, TDCSR, BIT0); /* DMA enable */
}
}
/* reset and disable transmitter */
val = rd_reg16(info, TCR) & ~BIT1; /* clear enable bit */
wr_reg16(info, TCR, (unsigned short)(val | BIT2)); /* set reset bit */
- wr_reg16(info, TCR, val); /* clear reset */
slgt_irq_off(info, IRQ_TXDATA + IRQ_TXIDLE + IRQ_TXUNDER);
reset_tbufs(info);
- info->tx_enabled = 0;
- info->tx_active = 0;
+ info->tx_enabled = false;
+ info->tx_active = false;
}
static void reset_port(struct slgt_info *info)
enable_loopback(info);
}
-static void hdlc_mode(struct slgt_info *info)
+static void sync_mode(struct slgt_info *info)
{
unsigned short val;
/* TCR (tx control)
*
- * 15..13 mode, 000=HDLC 001=raw sync
+ * 15..13 mode, 000=HDLC 001=raw 010=async 011=monosync 100=bisync
* 12..10 encoding
* 09 CRC enable
* 08 CRC32
*/
val = 0;
- if (info->params.mode == MGSL_MODE_RAW)
- val |= BIT13;
+ switch(info->params.mode) {
+ case MGSL_MODE_MONOSYNC: val |= BIT14 + BIT13; break;
+ case MGSL_MODE_BISYNC: val |= BIT15; break;
+ case MGSL_MODE_RAW: val |= BIT13; break;
+ }
if (info->if_mode & MGSL_INTERFACE_RTS_EN)
val |= BIT7;
/* RCR (rx control)
*
- * 15..13 mode, 000=HDLC 001=raw sync
+ * 15..13 mode, 000=HDLC 001=raw 010=async 011=monosync 100=bisync
* 12..10 encoding
* 09 CRC enable
* 08 CRC32
*/
val = 0;
- if (info->params.mode == MGSL_MODE_RAW)
- val |= BIT13;
+ switch(info->params.mode) {
+ case MGSL_MODE_MONOSYNC: val |= BIT14 + BIT13; break;
+ case MGSL_MODE_BISYNC: val |= BIT15; break;
+ case MGSL_MODE_RAW: val |= BIT13; break;
+ }
switch(info->params.encoding)
{
while(!done) {
/* reset current buffer for reuse */
info->rbufs[i].status = 0;
- if (info->params.mode == MGSL_MODE_RAW)
+ switch(info->params.mode) {
+ case MGSL_MODE_RAW:
+ case MGSL_MODE_MONOSYNC:
+ case MGSL_MODE_BISYNC:
set_desc_count(info->rbufs[i], info->raw_rx_size);
- else
+ break;
+ default:
set_desc_count(info->rbufs[i], DMABUFSIZE);
+ }
if (i == last)
done = 1;
/*
* pass receive HDLC frame to upper layer
*
- * return 1 if frame available, otherwise 0
+ * return true if frame available, otherwise false
*/
-static int rx_get_frame(struct slgt_info *info)
+static bool rx_get_frame(struct slgt_info *info)
{
unsigned int start, end;
unsigned short status;
unsigned int framesize = 0;
- int rc = 0;
unsigned long flags;
struct tty_struct *tty = info->tty;
unsigned char addr_field = 0xff;
framesize = 0;
}
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
if (framesize == 0) {
struct net_device_stats *stats = hdlc_stats(info->netdev);
stats->rx_errors++;
framesize++;
}
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
if (info->netcount)
hdlcdev_rx(info,info->tmp_rbuf, framesize);
else
}
}
free_rbufs(info, start, end);
- rc = 1;
+ return true;
cleanup:
- return rc;
+ return false;
}
/*
* pass receive buffer (RAW synchronous mode) to tty layer
- * return 1 if buffer available, otherwise 0
+ * return true if buffer available, otherwise false
*/
-static int rx_get_buf(struct slgt_info *info)
+static bool rx_get_buf(struct slgt_info *info)
{
unsigned int i = info->rbuf_current;
+ unsigned int count;
if (!desc_complete(info->rbufs[i]))
- return 0;
- DBGDATA(info, info->rbufs[i].buf, desc_count(info->rbufs[i]), "rx");
- DBGINFO(("rx_get_buf size=%d\n", desc_count(info->rbufs[i])));
- ldisc_receive_buf(info->tty, info->rbufs[i].buf,
- info->flag_buf, desc_count(info->rbufs[i]));
+ return false;
+ count = desc_count(info->rbufs[i]);
+ switch(info->params.mode) {
+ case MGSL_MODE_MONOSYNC:
+ case MGSL_MODE_BISYNC:
+ /* ignore residue in byte synchronous modes */
+ if (desc_residue(info->rbufs[i]))
+ count--;
+ break;
+ }
+ DBGDATA(info, info->rbufs[i].buf, count, "rx");
+ DBGINFO(("rx_get_buf size=%d\n", count));
+ if (count)
+ ldisc_receive_buf(info->tty, info->rbufs[i].buf,
+ info->flag_buf, count);
free_rbufs(info, i, i);
- return 1;
+ return true;
}
static void reset_tbufs(struct slgt_info *info)
i=0;
} while (i != info->tbuf_current);
- /* last buffer with zero count may be in use, assume it is */
- if (count)
+ /* if tx DMA active, last zero count buffer is in use */
+ if (count && (rd_reg32(info, TDCSR) & BIT0))
--count;
return count;
size -= count;
buf += count;
- if (!size && info->params.mode != MGSL_MODE_RAW)
- set_desc_eof(*d, 1); /* HDLC: set EOF of last desc */
+ /*
+ * set EOF bit for last buffer of HDLC frame or
+ * for every buffer in raw mode
+ */
+ if ((!size && info->params.mode == MGSL_MODE_HDLC) ||
+ info->params.mode == MGSL_MODE_RAW)
+ set_desc_eof(*d, 1);
else
set_desc_eof(*d, 0);
/* assume failure */
info->init_error = DiagStatus_IrqFailure;
- info->irq_occurred = FALSE;
+ info->irq_occurred = false;
spin_unlock_irqrestore(&info->lock, flags);
info->icount.txtimeout++;
}
spin_lock_irqsave(&info->lock,flags);
- info->tx_active = 0;
+ info->tx_active = false;
info->tx_count = 0;
spin_unlock_irqrestore(&info->lock,flags);
-#ifdef CONFIG_HDLC
+#if SYNCLINK_GENERIC_HDLC
if (info->netcount)
hdlcdev_tx_done(info);
else
spin_lock_irqsave(&info->lock, flags);
info->pending_bh |= BH_RECEIVE;
spin_unlock_irqrestore(&info->lock, flags);
- bh_handler(info);
+ bh_handler(&info->task);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff