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path: root/drivers/char/stallion.c
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Diffstat (limited to 'drivers/char/stallion.c')
-rw-r--r--drivers/char/stallion.c193
1 files changed, 86 insertions, 107 deletions
diff --git a/drivers/char/stallion.c b/drivers/char/stallion.c
index 95af2a941595..bdaab6992109 100644
--- a/drivers/char/stallion.c
+++ b/drivers/char/stallion.c
@@ -103,7 +103,7 @@ static stlconf_t stl_brdconf[] = {
/*{ BRD_EASYIO, 0x2a0, 0, 0, 10, 0 },*/
};
-static int stl_nrbrds = sizeof(stl_brdconf) / sizeof(stlconf_t);
+static int stl_nrbrds = ARRAY_SIZE(stl_brdconf);
/*****************************************************************************/
@@ -424,7 +424,7 @@ static stlpcibrd_t stl_pcibrds[] = {
{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87410, BRD_ECHPCI },
};
-static int stl_nrpcibrds = sizeof(stl_pcibrds) / sizeof(stlpcibrd_t);
+static int stl_nrpcibrds = ARRAY_SIZE(stl_pcibrds);
#endif
@@ -704,7 +704,7 @@ static unsigned int sc26198_baudtable[] = {
230400, 460800, 921600
};
-#define SC26198_NRBAUDS (sizeof(sc26198_baudtable) / sizeof(unsigned int))
+#define SC26198_NRBAUDS ARRAY_SIZE(sc26198_baudtable)
/*****************************************************************************/
@@ -738,7 +738,7 @@ static int __init stallion_module_init(void)
stl_init();
restore_flags(flags);
- return(0);
+ return 0;
}
/*****************************************************************************/
@@ -889,7 +889,7 @@ static unsigned long stl_atol(char *str)
}
val = (val * base) + c;
}
- return(val);
+ return val;
}
/*****************************************************************************/
@@ -901,26 +901,25 @@ static unsigned long stl_atol(char *str)
static int stl_parsebrd(stlconf_t *confp, char **argp)
{
char *sp;
- int nrbrdnames, i;
+ int i;
#ifdef DEBUG
printk("stl_parsebrd(confp=%x,argp=%x)\n", (int) confp, (int) argp);
#endif
if ((argp[0] == (char *) NULL) || (*argp[0] == 0))
- return(0);
+ return 0;
for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
*sp = TOLOWER(*sp);
- nrbrdnames = sizeof(stl_brdstr) / sizeof(stlbrdtype_t);
- for (i = 0; (i < nrbrdnames); i++) {
+ for (i = 0; i < ARRAY_SIZE(stl_brdstr); i++) {
if (strcmp(stl_brdstr[i].name, argp[0]) == 0)
break;
}
- if (i >= nrbrdnames) {
+ if (i == ARRAY_SIZE(stl_brdstr)) {
printk("STALLION: unknown board name, %s?\n", argp[0]);
- return(0);
+ return 0;
}
confp->brdtype = stl_brdstr[i].type;
@@ -936,7 +935,7 @@ static int stl_parsebrd(stlconf_t *confp, char **argp)
}
if ((argp[i] != (char *) NULL) && (*argp[i] != 0))
confp->irq = stl_atol(argp[i]);
- return(1);
+ return 1;
}
/*****************************************************************************/
@@ -947,7 +946,7 @@ static int stl_parsebrd(stlconf_t *confp, char **argp)
static void *stl_memalloc(int len)
{
- return((void *) kmalloc(len, GFP_KERNEL));
+ return (void *) kmalloc(len, GFP_KERNEL);
}
/*****************************************************************************/
@@ -964,12 +963,12 @@ static stlbrd_t *stl_allocbrd(void)
if (brdp == (stlbrd_t *) NULL) {
printk("STALLION: failed to allocate memory (size=%d)\n",
sizeof(stlbrd_t));
- return((stlbrd_t *) NULL);
+ return (stlbrd_t *) NULL;
}
memset(brdp, 0, sizeof(stlbrd_t));
brdp->magic = STL_BOARDMAGIC;
- return(brdp);
+ return brdp;
}
/*****************************************************************************/
@@ -989,10 +988,10 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
minordev = tty->index;
brdnr = MINOR2BRD(minordev);
if (brdnr >= stl_nrbrds)
- return(-ENODEV);
+ return -ENODEV;
brdp = stl_brds[brdnr];
if (brdp == (stlbrd_t *) NULL)
- return(-ENODEV);
+ return -ENODEV;
minordev = MINOR2PORT(minordev);
for (portnr = -1, panelnr = 0; (panelnr < STL_MAXPANELS); panelnr++) {
if (brdp->panels[panelnr] == (stlpanel_t *) NULL)
@@ -1004,11 +1003,11 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
minordev -= brdp->panels[panelnr]->nrports;
}
if (portnr < 0)
- return(-ENODEV);
+ return -ENODEV;
portp = brdp->panels[panelnr]->ports[portnr];
if (portp == (stlport_t *) NULL)
- return(-ENODEV);
+ return -ENODEV;
/*
* On the first open of the device setup the port hardware, and
@@ -1022,7 +1021,7 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
if (portp->tx.buf == (char *) NULL) {
portp->tx.buf = (char *) stl_memalloc(STL_TXBUFSIZE);
if (portp->tx.buf == (char *) NULL)
- return(-ENOMEM);
+ return -ENOMEM;
portp->tx.head = portp->tx.buf;
portp->tx.tail = portp->tx.buf;
}
@@ -1044,8 +1043,8 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
if (portp->flags & ASYNC_CLOSING) {
interruptible_sleep_on(&portp->close_wait);
if (portp->flags & ASYNC_HUP_NOTIFY)
- return(-EAGAIN);
- return(-ERESTARTSYS);
+ return -EAGAIN;
+ return -ERESTARTSYS;
}
/*
@@ -1055,11 +1054,11 @@ static int stl_open(struct tty_struct *tty, struct file *filp)
*/
if (!(filp->f_flags & O_NONBLOCK)) {
if ((rc = stl_waitcarrier(portp, filp)) != 0)
- return(rc);
+ return rc;
}
portp->flags |= ASYNC_NORMAL_ACTIVE;
- return(0);
+ return 0;
}
/*****************************************************************************/
@@ -1116,7 +1115,7 @@ static int stl_waitcarrier(stlport_t *portp, struct file *filp)
portp->openwaitcnt--;
restore_flags(flags);
- return(rc);
+ return rc;
}
/*****************************************************************************/
@@ -1212,12 +1211,12 @@ static int stl_write(struct tty_struct *tty, const unsigned char *buf, int count
if ((tty == (struct tty_struct *) NULL) ||
(stl_tmpwritebuf == (char *) NULL))
- return(0);
+ return 0;
portp = tty->driver_data;
if (portp == (stlport_t *) NULL)
- return(0);
+ return 0;
if (portp->tx.buf == (char *) NULL)
- return(0);
+ return 0;
/*
* If copying direct from user space we must cater for page faults,
@@ -1256,7 +1255,7 @@ static int stl_write(struct tty_struct *tty, const unsigned char *buf, int count
clear_bit(ASYI_TXLOW, &portp->istate);
stl_startrxtx(portp, -1, 1);
- return(count);
+ return count;
}
/*****************************************************************************/
@@ -1337,16 +1336,16 @@ static int stl_writeroom(struct tty_struct *tty)
#endif
if (tty == (struct tty_struct *) NULL)
- return(0);
+ return 0;
portp = tty->driver_data;
if (portp == (stlport_t *) NULL)
- return(0);
+ return 0;
if (portp->tx.buf == (char *) NULL)
- return(0);
+ return 0;
head = portp->tx.head;
tail = portp->tx.tail;
- return((head >= tail) ? (STL_TXBUFSIZE - (head - tail) - 1) : (tail - head - 1));
+ return ((head >= tail) ? (STL_TXBUFSIZE - (head - tail) - 1) : (tail - head - 1));
}
/*****************************************************************************/
@@ -1371,19 +1370,19 @@ static int stl_charsinbuffer(struct tty_struct *tty)
#endif
if (tty == (struct tty_struct *) NULL)
- return(0);
+ return 0;
portp = tty->driver_data;
if (portp == (stlport_t *) NULL)
- return(0);
+ return 0;
if (portp->tx.buf == (char *) NULL)
- return(0);
+ return 0;
head = portp->tx.head;
tail = portp->tx.tail;
size = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head));
if ((size == 0) && test_bit(ASYI_TXBUSY, &portp->istate))
size = 1;
- return(size);
+ return size;
}
/*****************************************************************************/
@@ -1448,7 +1447,7 @@ static int stl_setserial(stlport_t *portp, struct serial_struct __user *sp)
(sio.close_delay != portp->close_delay) ||
((sio.flags & ~ASYNC_USR_MASK) !=
(portp->flags & ~ASYNC_USR_MASK)))
- return(-EPERM);
+ return -EPERM;
}
portp->flags = (portp->flags & ~ASYNC_USR_MASK) |
@@ -1458,7 +1457,7 @@ static int stl_setserial(stlport_t *portp, struct serial_struct __user *sp)
portp->closing_wait = sio.closing_wait;
portp->custom_divisor = sio.custom_divisor;
stl_setport(portp, portp->tty->termios);
- return(0);
+ return 0;
}
/*****************************************************************************/
@@ -1468,12 +1467,12 @@ static int stl_tiocmget(struct tty_struct *tty, struct file *file)
stlport_t *portp;
if (tty == (struct tty_struct *) NULL)
- return(-ENODEV);
+ return -ENODEV;
portp = tty->driver_data;
if (portp == (stlport_t *) NULL)
- return(-ENODEV);
+ return -ENODEV;
if (tty->flags & (1 << TTY_IO_ERROR))
- return(-EIO);
+ return -EIO;
return stl_getsignals(portp);
}
@@ -1485,12 +1484,12 @@ static int stl_tiocmset(struct tty_struct *tty, struct file *file,
int rts = -1, dtr = -1;
if (tty == (struct tty_struct *) NULL)
- return(-ENODEV);
+ return -ENODEV;
portp = tty->driver_data;
if (portp == (stlport_t *) NULL)
- return(-ENODEV);
+ return -ENODEV;
if (tty->flags & (1 << TTY_IO_ERROR))
- return(-EIO);
+ return -EIO;
if (set & TIOCM_RTS)
rts = 1;
@@ -1518,15 +1517,15 @@ static int stl_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd
#endif
if (tty == (struct tty_struct *) NULL)
- return(-ENODEV);
+ return -ENODEV;
portp = tty->driver_data;
if (portp == (stlport_t *) NULL)
- return(-ENODEV);
+ return -ENODEV;
if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
(cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) {
if (tty->flags & (1 << TTY_IO_ERROR))
- return(-EIO);
+ return -EIO;
}
rc = 0;
@@ -1567,7 +1566,7 @@ static int stl_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd
break;
}
- return(rc);
+ return rc;
}
/*****************************************************************************/
@@ -1873,7 +1872,7 @@ static int stl_portinfo(stlport_t *portp, int portnr, char *pos)
pos[(MAXLINE - 2)] = '+';
pos[(MAXLINE - 1)] = '\n';
- return(MAXLINE);
+ return MAXLINE;
}
/*****************************************************************************/
@@ -1958,7 +1957,7 @@ static int stl_readproc(char *page, char **start, off_t off, int count, int *eof
stl_readdone:
*start = page;
- return(pos - page);
+ return (pos - page);
}
/*****************************************************************************/
@@ -2350,7 +2349,7 @@ static inline int stl_initeio(stlbrd_t *brdp)
} else {
rc = 0;
}
- return(rc);
+ return rc;
}
/*****************************************************************************/
@@ -2902,7 +2901,8 @@ static int stl_getportstats(stlport_t *portp, comstats_t __user *cp)
if (portp->tty != (struct tty_struct *) NULL) {
if (portp->tty->driver_data == portp) {
portp->stats.ttystate = portp->tty->flags;
- portp->stats.rxbuffered = portp->tty->flip.count;
+ /* No longer available as a statistic */
+ portp->stats.rxbuffered = 1; /*portp->tty->flip.count; */
if (portp->tty->termios != (struct termios *) NULL) {
portp->stats.cflags = portp->tty->termios->c_cflag;
portp->stats.iflags = portp->tty->termios->c_iflag;
@@ -3116,7 +3116,7 @@ static int __init stl_init(void)
return -1;
}
- return(0);
+ return 0;
}
/*****************************************************************************/
@@ -3132,7 +3132,7 @@ static int __init stl_init(void)
static int stl_cd1400getreg(stlport_t *portp, int regnr)
{
outb((regnr + portp->uartaddr), portp->ioaddr);
- return(inb(portp->ioaddr + EREG_DATA));
+ return inb(portp->ioaddr + EREG_DATA);
}
static void stl_cd1400setreg(stlport_t *portp, int regnr, int value)
@@ -3146,9 +3146,9 @@ static int stl_cd1400updatereg(stlport_t *portp, int regnr, int value)
outb((regnr + portp->uartaddr), portp->ioaddr);
if (inb(portp->ioaddr + EREG_DATA) != value) {
outb(value, portp->ioaddr + EREG_DATA);
- return(1);
+ return 1;
}
- return(0);
+ return 0;
}
/*****************************************************************************/
@@ -3206,7 +3206,7 @@ static int stl_cd1400panelinit(stlbrd_t *brdp, stlpanel_t *panelp)
}
BRDDISABLE(panelp->brdnr);
- return(chipmask);
+ return chipmask;
}
/*****************************************************************************/
@@ -3557,7 +3557,7 @@ static int stl_cd1400getsignals(stlport_t *portp)
#else
sigs |= TIOCM_DSR;
#endif
- return(sigs);
+ return sigs;
}
/*****************************************************************************/
@@ -3830,9 +3830,9 @@ static int stl_cd1400datastate(stlport_t *portp)
#endif
if (portp == (stlport_t *) NULL)
- return(0);
+ return 0;
- return(test_bit(ASYI_TXBUSY, &portp->istate) ? 1 : 0);
+ return test_bit(ASYI_TXBUSY, &portp->istate) ? 1 : 0;
}
/*****************************************************************************/
@@ -3912,20 +3912,20 @@ static inline int stl_cd1400breakisr(stlport_t *portp, int ioaddr)
outb((SRER + portp->uartaddr), ioaddr);
outb((inb(ioaddr + EREG_DATA) & ~(SRER_TXDATA | SRER_TXEMPTY)),
(ioaddr + EREG_DATA));
- return(1);
+ return 1;
} else if (portp->brklen > 1) {
outb((TDR + portp->uartaddr), ioaddr);
outb(ETC_CMD, (ioaddr + EREG_DATA));
outb(ETC_STOPBREAK, (ioaddr + EREG_DATA));
portp->brklen = -1;
- return(1);
+ return 1;
} else {
outb((COR2 + portp->uartaddr), ioaddr);
outb((inb(ioaddr + EREG_DATA) & ~COR2_ETC),
(ioaddr + EREG_DATA));
portp->brklen = 0;
}
- return(0);
+ return 0;
}
/*****************************************************************************/
@@ -4046,9 +4046,7 @@ static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
if ((ioack & ACK_TYPMASK) == ACK_TYPRXGOOD) {
outb((RDCR + portp->uartaddr), ioaddr);
len = inb(ioaddr + EREG_DATA);
- if ((tty == (struct tty_struct *) NULL) ||
- (tty->flip.char_buf_ptr == (char *) NULL) ||
- ((buflen = TTY_FLIPBUF_SIZE - tty->flip.count) == 0)) {
+ if (tty == NULL || (buflen = tty_buffer_request_room(tty, len)) == 0) {
len = MIN(len, sizeof(stl_unwanted));
outb((RDSR + portp->uartaddr), ioaddr);
insb((ioaddr + EREG_DATA), &stl_unwanted[0], len);
@@ -4057,12 +4055,10 @@ static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
} else {
len = MIN(len, buflen);
if (len > 0) {
+ unsigned char *ptr;
outb((RDSR + portp->uartaddr), ioaddr);
- insb((ioaddr + EREG_DATA), tty->flip.char_buf_ptr, len);
- memset(tty->flip.flag_buf_ptr, 0, len);
- tty->flip.flag_buf_ptr += len;
- tty->flip.char_buf_ptr += len;
- tty->flip.count += len;
+ tty_prepare_flip_string(tty, &ptr, len);
+ insb((ioaddr + EREG_DATA), ptr, len);
tty_schedule_flip(tty);
portp->stats.rxtotal += len;
}
@@ -4086,8 +4082,7 @@ static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
portp->stats.txxoff++;
goto stl_rxalldone;
}
- if ((tty != (struct tty_struct *) NULL) &&
- ((portp->rxignoremsk & status) == 0)) {
+ if (tty != NULL && (portp->rxignoremsk & status) == 0) {
if (portp->rxmarkmsk & status) {
if (status & ST_BREAK) {
status = TTY_BREAK;
@@ -4107,14 +4102,8 @@ static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
} else {
status = 0;
}
- if (tty->flip.char_buf_ptr != (char *) NULL) {
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- *tty->flip.flag_buf_ptr++ = status;
- *tty->flip.char_buf_ptr++ = ch;
- tty->flip.count++;
- }
- tty_schedule_flip(tty);
- }
+ tty_insert_flip_char(tty, ch, status);
+ tty_schedule_flip(tty);
}
} else {
printk("STALLION: bad RX interrupt ack value=%x\n", ioack);
@@ -4177,7 +4166,7 @@ static void stl_cd1400mdmisr(stlpanel_t *panelp, int ioaddr)
static int stl_sc26198getreg(stlport_t *portp, int regnr)
{
outb((regnr | portp->uartaddr), (portp->ioaddr + XP_ADDR));
- return(inb(portp->ioaddr + XP_DATA));
+ return inb(portp->ioaddr + XP_DATA);
}
static void stl_sc26198setreg(stlport_t *portp, int regnr, int value)
@@ -4191,9 +4180,9 @@ static int stl_sc26198updatereg(stlport_t *portp, int regnr, int value)
outb((regnr | portp->uartaddr), (portp->ioaddr + XP_ADDR));
if (inb(portp->ioaddr + XP_DATA) != value) {
outb(value, (portp->ioaddr + XP_DATA));
- return(1);
+ return 1;
}
- return(0);
+ return 0;
}
/*****************************************************************************/
@@ -4205,7 +4194,7 @@ static int stl_sc26198updatereg(stlport_t *portp, int regnr, int value)
static int stl_sc26198getglobreg(stlport_t *portp, int regnr)
{
outb(regnr, (portp->ioaddr + XP_ADDR));
- return(inb(portp->ioaddr + XP_DATA));
+ return inb(portp->ioaddr + XP_DATA);
}
#if 0
@@ -4263,7 +4252,7 @@ static int stl_sc26198panelinit(stlbrd_t *brdp, stlpanel_t *panelp)
}
BRDDISABLE(panelp->brdnr);
- return(chipmask);
+ return chipmask;
}
/*****************************************************************************/
@@ -4557,7 +4546,7 @@ static int stl_sc26198getsignals(stlport_t *portp)
sigs |= (ipr & IPR_DTR) ? 0: TIOCM_DTR;
sigs |= (ipr & IPR_RTS) ? 0: TIOCM_RTS;
sigs |= TIOCM_DSR;
- return(sigs);
+ return sigs;
}
/*****************************************************************************/
@@ -4839,9 +4828,9 @@ static int stl_sc26198datastate(stlport_t *portp)
#endif
if (portp == (stlport_t *) NULL)
- return(0);
+ return 0;
if (test_bit(ASYI_TXBUSY, &portp->istate))
- return(1);
+ return 1;
save_flags(flags);
cli();
@@ -4850,7 +4839,7 @@ static int stl_sc26198datastate(stlport_t *portp)
BRDDISABLE(portp->brdnr);
restore_flags(flags);
- return((sr & SR_TXEMPTY) ? 0 : 1);
+ return (sr & SR_TXEMPTY) ? 0 : 1;
}
/*****************************************************************************/
@@ -5013,9 +5002,7 @@ static void stl_sc26198rxisr(stlport_t *portp, unsigned int iack)
len = inb(ioaddr + XP_DATA) + 1;
if ((iack & IVR_TYPEMASK) == IVR_RXDATA) {
- if ((tty == (struct tty_struct *) NULL) ||
- (tty->flip.char_buf_ptr == (char *) NULL) ||
- ((buflen = TTY_FLIPBUF_SIZE - tty->flip.count) == 0)) {
+ if (tty == NULL || (buflen = tty_buffer_request_room(tty, len)) == 0) {
len = MIN(len, sizeof(stl_unwanted));
outb(GRXFIFO, (ioaddr + XP_ADDR));
insb((ioaddr + XP_DATA), &stl_unwanted[0], len);
@@ -5024,12 +5011,10 @@ static void stl_sc26198rxisr(stlport_t *portp, unsigned int iack)
} else {
len = MIN(len, buflen);
if (len > 0) {
+ unsigned char *ptr;
outb(GRXFIFO, (ioaddr + XP_ADDR));
- insb((ioaddr + XP_DATA), tty->flip.char_buf_ptr, len);
- memset(tty->flip.flag_buf_ptr, 0, len);
- tty->flip.flag_buf_ptr += len;
- tty->flip.char_buf_ptr += len;
- tty->flip.count += len;
+ tty_prepare_flip_string(tty, &ptr, len);
+ insb((ioaddr + XP_DATA), ptr, len);
tty_schedule_flip(tty);
portp->stats.rxtotal += len;
}
@@ -5097,14 +5082,8 @@ static inline void stl_sc26198rxbadch(stlport_t *portp, unsigned char status, ch
status = 0;
}
- if (tty->flip.char_buf_ptr != (char *) NULL) {
- if (tty->flip.count < TTY_FLIPBUF_SIZE) {
- *tty->flip.flag_buf_ptr++ = status;
- *tty->flip.char_buf_ptr++ = ch;
- tty->flip.count++;
- }
- tty_schedule_flip(tty);
- }
+ tty_insert_flip_char(tty, ch, status);
+ tty_schedule_flip(tty);
if (status == 0)
portp->stats.rxtotal++;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 18:03:05 +0100