/*****************************************************************************/
#include <linux/module.h>
+#include <linux/sched.h>
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial.h>
+#include <linux/seq_file.h>
#include <linux/cdk.h>
#include <linux/comstats.h>
#include <linux/istallion.h>
* with the slave. Most of them need to be updated atomically, so always
* use the bit setting operations (unless protected by cli/sti).
*/
-#define ST_INITIALIZING 1
#define ST_OPENING 2
#define ST_CLOSING 3
#define ST_CMDING 4
static void stli_waituntilsent(struct tty_struct *tty, int timeout);
static void stli_sendxchar(struct tty_struct *tty, char ch);
static void stli_hangup(struct tty_struct *tty);
-static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos);
static int stli_brdinit(struct stlibrd *brdp);
static int stli_startbrd(struct stlibrd *brdp);
static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp);
static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp);
-static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg);
+static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg);
static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp);
static void stli_poll(unsigned long arg);
static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp);
.owner = THIS_MODULE,
.read = stli_memread,
.write = stli_memwrite,
- .ioctl = stli_memioctl,
+ .unlocked_ioctl = stli_memioctl,
};
/*****************************************************************************/
/*****************************************************************************/
+/*
+ * On the first open of the device setup the port hardware, and
+ * initialize the per port data structure. Since initializing the port
+ * requires several commands to the board we will need to wait for any
+ * other open that is already initializing the port.
+ *
+ * Locking: protected by the port mutex.
+ */
+
+static int stli_activate(struct tty_port *port, struct tty_struct *tty)
+{
+ struct stliport *portp = container_of(port, struct stliport, port);
+ struct stlibrd *brdp = stli_brds[portp->brdnr];
+ int rc;
+
+ if ((rc = stli_initopen(tty, brdp, portp)) >= 0)
+ clear_bit(TTY_IO_ERROR, &tty->flags);
+ wake_up_interruptible(&portp->raw_wait);
+ return rc;
+}
+
static int stli_open(struct tty_struct *tty, struct file *filp)
{
struct stlibrd *brdp;
struct stliport *portp;
- struct tty_port *port;
unsigned int minordev, brdnr, portnr;
- int rc;
minordev = tty->index;
brdnr = MINOR2BRD(minordev);
return -ENODEV;
if (portp->devnr < 1)
return -ENODEV;
- port = &portp->port;
-
-/*
- * On the first open of the device setup the port hardware, and
- * initialize the per port data structure. Since initializing the port
- * requires several commands to the board we will need to wait for any
- * other open that is already initializing the port.
- *
- * Review - locking
- */
- tty_port_tty_set(port, tty);
- tty->driver_data = portp;
- port->count++;
-
- wait_event_interruptible(portp->raw_wait,
- !test_bit(ST_INITIALIZING, &portp->state));
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- if ((portp->port.flags & ASYNC_INITIALIZED) == 0) {
- set_bit(ST_INITIALIZING, &portp->state);
- if ((rc = stli_initopen(tty, brdp, portp)) >= 0) {
- /* Locking */
- port->flags |= ASYNC_INITIALIZED;
- clear_bit(TTY_IO_ERROR, &tty->flags);
- }
- clear_bit(ST_INITIALIZING, &portp->state);
- wake_up_interruptible(&portp->raw_wait);
- if (rc < 0)
- return rc;
- }
- return tty_port_block_til_ready(&portp->port, tty, filp);
+ return tty_port_open(&portp->port, tty, filp);
}
+
/*****************************************************************************/
-static void stli_close(struct tty_struct *tty, struct file *filp)
+static void stli_shutdown(struct tty_port *port)
{
struct stlibrd *brdp;
- struct stliport *portp;
- struct tty_port *port;
+ unsigned long ftype;
unsigned long flags;
+ struct stliport *portp = container_of(port, struct stliport, port);
- portp = tty->driver_data;
- if (portp == NULL)
+ if (portp->brdnr >= stli_nrbrds)
return;
- port = &portp->port;
-
- if (tty_port_close_start(port, tty, filp) == 0)
+ brdp = stli_brds[portp->brdnr];
+ if (brdp == NULL)
return;
-/*
- * May want to wait for data to drain before closing. The BUSY flag
- * keeps track of whether we are still transmitting or not. It is
- * updated by messages from the slave - indicating when all chars
- * really have drained.
- */
- spin_lock_irqsave(&stli_lock, flags);
- if (tty == stli_txcooktty)
- stli_flushchars(tty);
- spin_unlock_irqrestore(&stli_lock, flags);
-
- /* We end up doing this twice for the moment. This needs looking at
- eventually. Note we still use portp->closing_wait as a result */
- if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE)
- tty_wait_until_sent(tty, portp->closing_wait);
+ /*
+ * May want to wait for data to drain before closing. The BUSY
+ * flag keeps track of whether we are still transmitting or not.
+ * It is updated by messages from the slave - indicating when all
+ * chars really have drained.
+ */
- /* FIXME: port locking here needs attending to */
- port->flags &= ~ASYNC_INITIALIZED;
+ if (!test_bit(ST_CLOSING, &portp->state))
+ stli_rawclose(brdp, portp, 0, 0);
- brdp = stli_brds[portp->brdnr];
- stli_rawclose(brdp, portp, 0, 0);
- if (tty->termios->c_cflag & HUPCL) {
- stli_mkasysigs(&portp->asig, 0, 0);
- if (test_bit(ST_CMDING, &portp->state))
- set_bit(ST_DOSIGS, &portp->state);
- else
- stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig,
- sizeof(asysigs_t), 0);
- }
+ spin_lock_irqsave(&stli_lock, flags);
clear_bit(ST_TXBUSY, &portp->state);
clear_bit(ST_RXSTOP, &portp->state);
- set_bit(TTY_IO_ERROR, &tty->flags);
- tty_ldisc_flush(tty);
- set_bit(ST_DOFLUSHRX, &portp->state);
- stli_flushbuffer(tty);
+ spin_unlock_irqrestore(&stli_lock, flags);
+
+ ftype = FLUSHTX | FLUSHRX;
+ stli_cmdwait(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0);
+}
- tty_port_close_end(port, tty);
- tty_port_tty_set(port, NULL);
+static void stli_close(struct tty_struct *tty, struct file *filp)
+{
+ struct stliport *portp = tty->driver_data;
+ unsigned long flags;
+ if (portp == NULL)
+ return;
+ spin_lock_irqsave(&stli_lock, flags);
+ /* Flush any internal buffering out first */
+ if (tty == stli_txcooktty)
+ stli_flushchars(tty);
+ spin_unlock_irqrestore(&stli_lock, flags);
+ tty_port_close(&portp->port, tty, filp);
}
/*****************************************************************************/
return (portp->sigs & TIOCM_CD) ? 1 : 0;
}
-static void stli_raise_dtr_rts(struct tty_port *port)
+static void stli_dtr_rts(struct tty_port *port, int on)
{
struct stliport *portp = container_of(port, struct stliport, port);
struct stlibrd *brdp = stli_brds[portp->brdnr];
- stli_mkasysigs(&portp->asig, 1, 1);
+ stli_mkasysigs(&portp->asig, on, on);
if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig,
sizeof(asysigs_t), 0) < 0)
- printk(KERN_WARNING "istallion: dtr raise failed.\n");
+ printk(KERN_WARNING "istallion: dtr set failed.\n");
}
/*****************************************************************************/
+
/*
* Hangup this port. This is pretty much like closing the port, only
* a little more brutal. No waiting for data to drain. Shutdown the
static void stli_hangup(struct tty_struct *tty)
{
- struct stliport *portp;
- struct stlibrd *brdp;
- struct tty_port *port;
- unsigned long flags;
-
- portp = tty->driver_data;
- if (portp == NULL)
- return;
- if (portp->brdnr >= stli_nrbrds)
- return;
- brdp = stli_brds[portp->brdnr];
- if (brdp == NULL)
- return;
- port = &portp->port;
-
- spin_lock_irqsave(&port->lock, flags);
- port->flags &= ~ASYNC_INITIALIZED;
- spin_unlock_irqrestore(&port->lock, flags);
-
- if (!test_bit(ST_CLOSING, &portp->state))
- stli_rawclose(brdp, portp, 0, 0);
-
- spin_lock_irqsave(&stli_lock, flags);
- if (tty->termios->c_cflag & HUPCL) {
- stli_mkasysigs(&portp->asig, 0, 0);
- if (test_bit(ST_CMDING, &portp->state)) {
- set_bit(ST_DOSIGS, &portp->state);
- set_bit(ST_DOFLUSHTX, &portp->state);
- set_bit(ST_DOFLUSHRX, &portp->state);
- } else {
- stli_sendcmd(brdp, portp, A_SETSIGNALSF,
- &portp->asig, sizeof(asysigs_t), 0);
- }
- }
-
- clear_bit(ST_TXBUSY, &portp->state);
- clear_bit(ST_RXSTOP, &portp->state);
- set_bit(TTY_IO_ERROR, &tty->flags);
- spin_unlock_irqrestore(&stli_lock, flags);
-
- tty_port_hangup(port);
+ struct stliport *portp = tty->driver_data;
+ tty_port_hangup(&portp->port);
}
/*****************************************************************************/
stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0);
}
-/*****************************************************************************/
-
-#define MAXLINE 80
-
-/*
- * Format info for a specified port. The line is deliberately limited
- * to 80 characters. (If it is too long it will be truncated, if too
- * short then padded with spaces).
- */
-
-static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos)
+static void stli_portinfo(struct seq_file *m, struct stlibrd *brdp, struct stliport *portp, int portnr)
{
- char *sp, *uart;
- int rc, cnt;
+ char *uart;
+ int rc;
rc = stli_portcmdstats(NULL, portp);
default:uart = "CD1400"; break;
}
}
-
- sp = pos;
- sp += sprintf(sp, "%d: uart:%s ", portnr, uart);
+ seq_printf(m, "%d: uart:%s ", portnr, uart);
if ((brdp->state & BST_STARTED) && (rc >= 0)) {
- sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal,
+ char sep;
+
+ seq_printf(m, "tx:%d rx:%d", (int) stli_comstats.txtotal,
(int) stli_comstats.rxtotal);
if (stli_comstats.rxframing)
- sp += sprintf(sp, " fe:%d",
+ seq_printf(m, " fe:%d",
(int) stli_comstats.rxframing);
if (stli_comstats.rxparity)
- sp += sprintf(sp, " pe:%d",
+ seq_printf(m, " pe:%d",
(int) stli_comstats.rxparity);
if (stli_comstats.rxbreaks)
- sp += sprintf(sp, " brk:%d",
+ seq_printf(m, " brk:%d",
(int) stli_comstats.rxbreaks);
if (stli_comstats.rxoverrun)
- sp += sprintf(sp, " oe:%d",
+ seq_printf(m, " oe:%d",
(int) stli_comstats.rxoverrun);
- cnt = sprintf(sp, "%s%s%s%s%s ",
- (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "",
- (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "",
- (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "",
- (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "",
- (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : "");
- *sp = ' ';
- sp += cnt;
+ sep = ' ';
+ if (stli_comstats.signals & TIOCM_RTS) {
+ seq_printf(m, "%c%s", sep, "RTS");
+ sep = '|';
+ }
+ if (stli_comstats.signals & TIOCM_CTS) {
+ seq_printf(m, "%c%s", sep, "CTS");
+ sep = '|';
+ }
+ if (stli_comstats.signals & TIOCM_DTR) {
+ seq_printf(m, "%c%s", sep, "DTR");
+ sep = '|';
+ }
+ if (stli_comstats.signals & TIOCM_CD) {
+ seq_printf(m, "%c%s", sep, "DCD");
+ sep = '|';
+ }
+ if (stli_comstats.signals & TIOCM_DSR) {
+ seq_printf(m, "%c%s", sep, "DSR");
+ sep = '|';
+ }
}
-
- for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++)
- *sp++ = ' ';
- if (cnt >= MAXLINE)
- pos[(MAXLINE - 2)] = '+';
- pos[(MAXLINE - 1)] = '\n';
-
- return(MAXLINE);
+ seq_putc(m, '\n');
}
/*****************************************************************************/
* Port info, read from the /proc file system.
*/
-static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data)
+static int stli_proc_show(struct seq_file *m, void *v)
{
struct stlibrd *brdp;
struct stliport *portp;
unsigned int brdnr, portnr, totalport;
- int curoff, maxoff;
- char *pos;
- pos = page;
totalport = 0;
- curoff = 0;
-
- if (off == 0) {
- pos += sprintf(pos, "%s: version %s", stli_drvtitle,
- stli_drvversion);
- while (pos < (page + MAXLINE - 1))
- *pos++ = ' ';
- *pos++ = '\n';
- }
- curoff = MAXLINE;
+
+ seq_printf(m, "%s: version %s\n", stli_drvtitle, stli_drvversion);
/*
* We scan through for each board, panel and port. The offset is
if (brdp->state == 0)
continue;
- maxoff = curoff + (brdp->nrports * MAXLINE);
- if (off >= maxoff) {
- curoff = maxoff;
- continue;
- }
-
totalport = brdnr * STL_MAXPORTS;
for (portnr = 0; (portnr < brdp->nrports); portnr++,
totalport++) {
portp = brdp->ports[portnr];
if (portp == NULL)
continue;
- if (off >= (curoff += MAXLINE))
- continue;
- if ((pos - page + MAXLINE) > count)
- goto stli_readdone;
- pos += stli_portinfo(brdp, portp, totalport, pos);
+ stli_portinfo(m, brdp, portp, totalport);
}
}
+ return 0;
+}
- *eof = 1;
-
-stli_readdone:
- *start = page;
- return(pos - page);
+static int stli_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, stli_proc_show, NULL);
}
+static const struct file_operations stli_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = stli_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
/*****************************************************************************/
/*
return retval;
}
-static void stli_pciremove(struct pci_dev *pdev)
+static void __devexit stli_pciremove(struct pci_dev *pdev)
{
struct stlibrd *brdp = pci_get_drvdata(pdev);
* reset it, and start/stop it.
*/
-static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg)
+static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg)
{
struct stlibrd *brdp;
int brdnr, rc, done;
* Now handle the board specific ioctls. These all depend on the
* minor number of the device they were called from.
*/
- brdnr = iminor(ip);
+ brdnr = iminor(fp->f_dentry->d_inode);
if (brdnr >= STL_MAXBRDS)
return -ENODEV;
brdp = stli_brds[brdnr];
.break_ctl = stli_breakctl,
.wait_until_sent = stli_waituntilsent,
.send_xchar = stli_sendxchar,
- .read_proc = stli_readproc,
.tiocmget = stli_tiocmget,
.tiocmset = stli_tiocmset,
+ .proc_fops = &stli_proc_fops,
};
static const struct tty_port_operations stli_port_ops = {
.carrier_raised = stli_carrier_raised,
- .raise_dtr_rts = stli_raise_dtr_rts,
+ .dtr_rts = stli_dtr_rts,
+ .activate = stli_activate,
+ .shutdown = stli_shutdown,
};
/*****************************************************************************/
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff