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-rw-r--r--drivers/char/sx.c191
1 files changed, 101 insertions, 90 deletions
diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index b1a7a8cb65ea..c385206f9db5 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -1,4 +1,3 @@
-
/* sx.c -- driver for the Specialix SX series cards.
*
* This driver will also support the older SI, and XIO cards.
@@ -287,8 +286,8 @@ static void sx_close(void *ptr);
static int sx_chars_in_buffer(void *ptr);
static int sx_init_board(struct sx_board *board);
static int sx_init_portstructs(int nboards, int nports);
-static int sx_fw_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg);
+static long sx_fw_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg);
static int sx_init_drivers(void);
static struct tty_driver *sx_driver;
@@ -397,7 +396,7 @@ static struct real_driver sx_real_driver = {
static const struct file_operations sx_fw_fops = {
.owner = THIS_MODULE,
- .ioctl = sx_fw_ioctl,
+ .unlocked_ioctl = sx_fw_ioctl,
};
static struct miscdevice sx_fw_device = {
@@ -930,7 +929,7 @@ static int sx_set_real_termios(void *ptr)
func_enter2();
- if (!port->gs.tty)
+ if (!port->gs.port.tty)
return 0;
/* What is this doing here? -- REW
@@ -941,19 +940,19 @@ static int sx_set_real_termios(void *ptr)
sx_set_baud(port);
-#define CFLAG port->gs.tty->termios->c_cflag
+#define CFLAG port->gs.port.tty->termios->c_cflag
sx_write_channel_byte(port, hi_mr1,
- (C_PARENB(port->gs.tty) ? MR1_WITH : MR1_NONE) |
- (C_PARODD(port->gs.tty) ? MR1_ODD : MR1_EVEN) |
- (C_CRTSCTS(port->gs.tty) ? MR1_RTS_RXFLOW : 0) |
+ (C_PARENB(port->gs.port.tty) ? MR1_WITH : MR1_NONE) |
+ (C_PARODD(port->gs.port.tty) ? MR1_ODD : MR1_EVEN) |
+ (C_CRTSCTS(port->gs.port.tty) ? MR1_RTS_RXFLOW : 0) |
(((CFLAG & CSIZE) == CS8) ? MR1_8_BITS : 0) |
(((CFLAG & CSIZE) == CS7) ? MR1_7_BITS : 0) |
(((CFLAG & CSIZE) == CS6) ? MR1_6_BITS : 0) |
(((CFLAG & CSIZE) == CS5) ? MR1_5_BITS : 0));
sx_write_channel_byte(port, hi_mr2,
- (C_CRTSCTS(port->gs.tty) ? MR2_CTS_TXFLOW : 0) |
- (C_CSTOPB(port->gs.tty) ? MR2_2_STOP :
+ (C_CRTSCTS(port->gs.port.tty) ? MR2_CTS_TXFLOW : 0) |
+ (C_CSTOPB(port->gs.port.tty) ? MR2_2_STOP :
MR2_1_STOP));
switch (CFLAG & CSIZE) {
@@ -976,44 +975,44 @@ static int sx_set_real_termios(void *ptr)
}
sx_write_channel_byte(port, hi_prtcl,
- (I_IXON(port->gs.tty) ? SP_TXEN : 0) |
- (I_IXOFF(port->gs.tty) ? SP_RXEN : 0) |
- (I_IXANY(port->gs.tty) ? SP_TANY : 0) | SP_DCEN);
+ (I_IXON(port->gs.port.tty) ? SP_TXEN : 0) |
+ (I_IXOFF(port->gs.port.tty) ? SP_RXEN : 0) |
+ (I_IXANY(port->gs.port.tty) ? SP_TANY : 0) | SP_DCEN);
sx_write_channel_byte(port, hi_break,
- (I_IGNBRK(port->gs.tty) ? BR_IGN : 0 |
- I_BRKINT(port->gs.tty) ? BR_INT : 0));
+ (I_IGNBRK(port->gs.port.tty) ? BR_IGN : 0 |
+ I_BRKINT(port->gs.port.tty) ? BR_INT : 0));
- sx_write_channel_byte(port, hi_txon, START_CHAR(port->gs.tty));
- sx_write_channel_byte(port, hi_rxon, START_CHAR(port->gs.tty));
- sx_write_channel_byte(port, hi_txoff, STOP_CHAR(port->gs.tty));
- sx_write_channel_byte(port, hi_rxoff, STOP_CHAR(port->gs.tty));
+ sx_write_channel_byte(port, hi_txon, START_CHAR(port->gs.port.tty));
+ sx_write_channel_byte(port, hi_rxon, START_CHAR(port->gs.port.tty));
+ sx_write_channel_byte(port, hi_txoff, STOP_CHAR(port->gs.port.tty));
+ sx_write_channel_byte(port, hi_rxoff, STOP_CHAR(port->gs.port.tty));
sx_reconfigure_port(port);
/* Tell line discipline whether we will do input cooking */
- if (I_OTHER(port->gs.tty)) {
- clear_bit(TTY_HW_COOK_IN, &port->gs.tty->flags);
+ if (I_OTHER(port->gs.port.tty)) {
+ clear_bit(TTY_HW_COOK_IN, &port->gs.port.tty->flags);
} else {
- set_bit(TTY_HW_COOK_IN, &port->gs.tty->flags);
+ set_bit(TTY_HW_COOK_IN, &port->gs.port.tty->flags);
}
sx_dprintk(SX_DEBUG_TERMIOS, "iflags: %x(%d) ",
- (unsigned int)port->gs.tty->termios->c_iflag,
- I_OTHER(port->gs.tty));
+ (unsigned int)port->gs.port.tty->termios->c_iflag,
+ I_OTHER(port->gs.port.tty));
/* Tell line discipline whether we will do output cooking.
* If OPOST is set and no other output flags are set then we can do output
* processing. Even if only *one* other flag in the O_OTHER group is set
* we do cooking in software.
*/
- if (O_OPOST(port->gs.tty) && !O_OTHER(port->gs.tty)) {
- set_bit(TTY_HW_COOK_OUT, &port->gs.tty->flags);
+ if (O_OPOST(port->gs.port.tty) && !O_OTHER(port->gs.port.tty)) {
+ set_bit(TTY_HW_COOK_OUT, &port->gs.port.tty->flags);
} else {
- clear_bit(TTY_HW_COOK_OUT, &port->gs.tty->flags);
+ clear_bit(TTY_HW_COOK_OUT, &port->gs.port.tty->flags);
}
sx_dprintk(SX_DEBUG_TERMIOS, "oflags: %x(%d)\n",
- (unsigned int)port->gs.tty->termios->c_oflag,
- O_OTHER(port->gs.tty));
+ (unsigned int)port->gs.port.tty->termios->c_oflag,
+ O_OTHER(port->gs.port.tty));
/* port->c_dcd = sx_get_CD (port); */
func_exit();
return 0;
@@ -1102,8 +1101,8 @@ static void sx_transmit_chars(struct sx_port *port)
sx_disable_tx_interrupts(port);
}
- if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.tty) {
- tty_wakeup(port->gs.tty);
+ if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.port.tty) {
+ tty_wakeup(port->gs.port.tty);
sx_dprintk(SX_DEBUG_TRANSMIT, "Waking up.... ldisc (%d)....\n",
port->gs.wakeup_chars);
}
@@ -1126,7 +1125,7 @@ static inline void sx_receive_chars(struct sx_port *port)
unsigned char *rp;
func_enter2();
- tty = port->gs.tty;
+ tty = port->gs.port.tty;
while (1) {
rx_op = sx_read_channel_byte(port, hi_rxopos);
c = (sx_read_channel_byte(port, hi_rxipos) - rx_op) & 0xff;
@@ -1211,12 +1210,12 @@ static inline void sx_check_modem_signals(struct sx_port *port)
/* DCD went UP */
if ((sx_read_channel_byte(port, hi_hstat) !=
HS_IDLE_CLOSED) &&
- !(port->gs.tty->termios->
+ !(port->gs.port.tty->termios->
c_cflag & CLOCAL)) {
/* Are we blocking in open? */
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD "
"active, unblocking open\n");
- wake_up_interruptible(&port->gs.
+ wake_up_interruptible(&port->gs.port.
open_wait);
} else {
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD "
@@ -1224,10 +1223,10 @@ static inline void sx_check_modem_signals(struct sx_port *port)
}
} else {
/* DCD went down! */
- if (!(port->gs.tty->termios->c_cflag & CLOCAL)){
+ if (!(port->gs.port.tty->termios->c_cflag & CLOCAL)){
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD "
"dropped. hanging up....\n");
- tty_hangup(port->gs.tty);
+ tty_hangup(port->gs.port.tty);
} else {
sx_dprintk(SX_DEBUG_MODEMSIGNALS, "DCD "
"dropped. ignoring.\n");
@@ -1325,7 +1324,7 @@ static irqreturn_t sx_interrupt(int irq, void *ptr)
for (i = 0; i < board->nports; i++) {
port = &board->ports[i];
- if (port->gs.flags & GS_ACTIVE) {
+ if (port->gs.port.flags & GS_ACTIVE) {
if (sx_read_channel_byte(port, hi_state)) {
sx_dprintk(SX_DEBUG_INTERRUPTS, "Port %d: "
"modem signal change?... \n",i);
@@ -1334,7 +1333,7 @@ static irqreturn_t sx_interrupt(int irq, void *ptr)
if (port->gs.xmit_cnt) {
sx_transmit_chars(port);
}
- if (!(port->gs.flags & SX_RX_THROTTLE)) {
+ if (!(port->gs.port.flags & SX_RX_THROTTLE)) {
sx_receive_chars(port);
}
}
@@ -1373,7 +1372,7 @@ static void sx_disable_tx_interrupts(void *ptr)
struct sx_port *port = ptr;
func_enter2();
- port->gs.flags &= ~GS_TX_INTEN;
+ port->gs.port.flags &= ~GS_TX_INTEN;
func_exit();
}
@@ -1394,7 +1393,7 @@ static void sx_enable_tx_interrupts(void *ptr)
/* XXX Must be "HIGH_WATER" for SI card according to doc. */
if (data_in_buffer < LOW_WATER)
- port->gs.flags &= ~GS_TX_INTEN;
+ port->gs.port.flags &= ~GS_TX_INTEN;
func_exit();
}
@@ -1442,8 +1441,8 @@ static void sx_shutdown_port(void *ptr)
func_enter();
- port->gs.flags &= ~GS_ACTIVE;
- if (port->gs.tty && (port->gs.tty->termios->c_cflag & HUPCL)) {
+ port->gs.port.flags &= ~GS_ACTIVE;
+ if (port->gs.port.tty && (port->gs.port.tty->termios->c_cflag & HUPCL)) {
sx_setsignals(port, 0, 0);
sx_reconfigure_port(port);
}
@@ -1485,8 +1484,8 @@ static int sx_open(struct tty_struct *tty, struct file *filp)
spin_lock_irqsave(&port->gs.driver_lock, flags);
tty->driver_data = port;
- port->gs.tty = tty;
- port->gs.count++;
+ port->gs.port.tty = tty;
+ port->gs.port.count++;
spin_unlock_irqrestore(&port->gs.driver_lock, flags);
sx_dprintk(SX_DEBUG_OPEN, "starting port\n");
@@ -1497,12 +1496,12 @@ static int sx_open(struct tty_struct *tty, struct file *filp)
retval = gs_init_port(&port->gs);
sx_dprintk(SX_DEBUG_OPEN, "done gs_init\n");
if (retval) {
- port->gs.count--;
+ port->gs.port.count--;
return retval;
}
- port->gs.flags |= GS_ACTIVE;
- if (port->gs.count <= 1)
+ port->gs.port.flags |= GS_ACTIVE;
+ if (port->gs.port.count <= 1)
sx_setsignals(port, 1, 1);
#if 0
@@ -1513,12 +1512,12 @@ static int sx_open(struct tty_struct *tty, struct file *filp)
my_hd_io(port->board->base + port->ch_base, sizeof(*port));
#endif
- if (port->gs.count <= 1) {
+ if (port->gs.port.count <= 1) {
if (sx_send_command(port, HS_LOPEN, -1, HS_IDLE_OPEN) != 1) {
printk(KERN_ERR "sx: Card didn't respond to LOPEN "
"command.\n");
spin_lock_irqsave(&port->gs.driver_lock, flags);
- port->gs.count--;
+ port->gs.port.count--;
spin_unlock_irqrestore(&port->gs.driver_lock, flags);
return -EIO;
}
@@ -1526,11 +1525,11 @@ static int sx_open(struct tty_struct *tty, struct file *filp)
retval = gs_block_til_ready(port, filp);
sx_dprintk(SX_DEBUG_OPEN, "Block til ready returned %d. Count=%d\n",
- retval, port->gs.count);
+ retval, port->gs.port.count);
if (retval) {
/*
- * Don't lower gs.count here because sx_close() will be called later
+ * Don't lower gs.port.count here because sx_close() will be called later
*/
return retval;
@@ -1571,14 +1570,14 @@ static void sx_close(void *ptr)
}
sx_dprintk(SX_DEBUG_CLOSE, "waited %d jiffies for close. count=%d\n",
- 5 * HZ - to - 1, port->gs.count);
+ 5 * HZ - to - 1, port->gs.port.count);
- if (port->gs.count) {
+ if (port->gs.port.count) {
sx_dprintk(SX_DEBUG_CLOSE, "WARNING port count:%d\n",
- port->gs.count);
+ port->gs.port.count);
/*printk("%s SETTING port count to zero: %p count: %d\n",
- __func__, port, port->gs.count);
- port->gs.count = 0;*/
+ __func__, port, port->gs.port.count);
+ port->gs.port.count = 0;*/
}
func_exit();
@@ -1687,10 +1686,10 @@ static int do_memtest_w(struct sx_board *board, int min, int max)
}
#endif
-static int sx_fw_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+static long sx_fw_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
{
- int rc = 0;
+ long rc = 0;
int __user *descr = (int __user *)arg;
int i;
static struct sx_board *board = NULL;
@@ -1700,13 +1699,10 @@ static int sx_fw_ioctl(struct inode *inode, struct file *filp,
func_enter();
-#if 0
- /* Removed superuser check: Sysops can use the permissions on the device
- file to restrict access. Recommendation: Root only. (root.root 600) */
- if (!capable(CAP_SYS_ADMIN)) {
+ if (!capable(CAP_SYS_RAWIO))
return -EPERM;
- }
-#endif
+
+ lock_kernel();
sx_dprintk(SX_DEBUG_FIRMWARE, "IOCTL %x: %lx\n", cmd, arg);
@@ -1721,19 +1717,23 @@ static int sx_fw_ioctl(struct inode *inode, struct file *filp,
for (i = 0; i < SX_NBOARDS; i++)
sx_dprintk(SX_DEBUG_FIRMWARE, "<%x> ", boards[i].flags);
sx_dprintk(SX_DEBUG_FIRMWARE, "\n");
+ unlock_kernel();
return -EIO;
}
switch (cmd) {
case SXIO_SET_BOARD:
sx_dprintk(SX_DEBUG_FIRMWARE, "set board to %ld\n", arg);
+ rc = -EIO;
if (arg >= SX_NBOARDS)
- return -EIO;
+ break;
sx_dprintk(SX_DEBUG_FIRMWARE, "not out of range\n");
if (!(boards[arg].flags & SX_BOARD_PRESENT))
- return -EIO;
+ break;
sx_dprintk(SX_DEBUG_FIRMWARE, ".. and present!\n");
board = &boards[arg];
+ rc = 0;
+ /* FIXME: And this does ... nothing?? */
break;
case SXIO_GET_TYPE:
rc = -ENOENT; /* If we manage to miss one, return error. */
@@ -1747,7 +1747,7 @@ static int sx_fw_ioctl(struct inode *inode, struct file *filp,
rc = SX_TYPE_SI;
if (IS_EISA_BOARD(board))
rc = SX_TYPE_SI;
- sx_dprintk(SX_DEBUG_FIRMWARE, "returning type= %d\n", rc);
+ sx_dprintk(SX_DEBUG_FIRMWARE, "returning type= %ld\n", rc);
break;
case SXIO_DO_RAMTEST:
if (sx_initialized) /* Already initialized: better not ramtest the board. */
@@ -1761,19 +1761,26 @@ static int sx_fw_ioctl(struct inode *inode, struct file *filp,
rc = do_memtest(board, 0, 0x7ff8);
/* if (!rc) rc = do_memtest_w (board, 0, 0x7ff8); */
}
- sx_dprintk(SX_DEBUG_FIRMWARE, "returning memtest result= %d\n",
- rc);
+ sx_dprintk(SX_DEBUG_FIRMWARE,
+ "returning memtest result= %ld\n", rc);
break;
case SXIO_DOWNLOAD:
- if (sx_initialized) /* Already initialized */
- return -EEXIST;
- if (!sx_reset(board))
- return -EIO;
+ if (sx_initialized) {/* Already initialized */
+ rc = -EEXIST;
+ break;
+ }
+ if (!sx_reset(board)) {
+ rc = -EIO;
+ break;
+ }
sx_dprintk(SX_DEBUG_INIT, "reset the board...\n");
tmp = kmalloc(SX_CHUNK_SIZE, GFP_USER);
- if (!tmp)
- return -ENOMEM;
+ if (!tmp) {
+ rc = -ENOMEM;
+ break;
+ }
+ /* FIXME: check returns */
get_user(nbytes, descr++);
get_user(offset, descr++);
get_user(data, descr++);
@@ -1783,7 +1790,8 @@ static int sx_fw_ioctl(struct inode *inode, struct file *filp,
(i + SX_CHUNK_SIZE > nbytes) ?
nbytes - i : SX_CHUNK_SIZE)) {
kfree(tmp);
- return -EFAULT;
+ rc = -EFAULT;
+ break;
}
memcpy_toio(board->base2 + offset + i, tmp,
(i + SX_CHUNK_SIZE > nbytes) ?
@@ -1799,13 +1807,17 @@ static int sx_fw_ioctl(struct inode *inode, struct file *filp,
rc = sx_nports;
break;
case SXIO_INIT:
- if (sx_initialized) /* Already initialized */
- return -EEXIST;
+ if (sx_initialized) { /* Already initialized */
+ rc = -EEXIST;
+ break;
+ }
/* This is not allowed until all boards are initialized... */
for (i = 0; i < SX_NBOARDS; i++) {
if ((boards[i].flags & SX_BOARD_PRESENT) &&
- !(boards[i].flags & SX_BOARD_INITIALIZED))
- return -EIO;
+ !(boards[i].flags & SX_BOARD_INITIALIZED)) {
+ rc = -EIO;
+ break;
+ }
}
for (i = 0; i < SX_NBOARDS; i++)
if (!(boards[i].flags & SX_BOARD_PRESENT))
@@ -1833,15 +1845,15 @@ static int sx_fw_ioctl(struct inode *inode, struct file *filp,
rc = sx_nports;
break;
default:
- printk(KERN_WARNING "Unknown ioctl on firmware device (%x).\n",
- cmd);
+ rc = -ENOTTY;
break;
}
+ unlock_kernel();
func_exit();
return rc;
}
-static void sx_break(struct tty_struct *tty, int flag)
+static int sx_break(struct tty_struct *tty, int flag)
{
struct sx_port *port = tty->driver_data;
int rv;
@@ -1858,6 +1870,7 @@ static void sx_break(struct tty_struct *tty, int flag)
read_sx_byte(port->board, CHAN_OFFSET(port, hi_hstat)));
unlock_kernel();
func_exit();
+ return 0;
}
static int sx_tiocmget(struct tty_struct *tty, struct file *file)
@@ -1939,7 +1952,7 @@ static void sx_throttle(struct tty_struct *tty)
* control then throttle the port.
*/
if ((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty))) {
- port->gs.flags |= SX_RX_THROTTLE;
+ port->gs.port.flags |= SX_RX_THROTTLE;
}
func_exit();
}
@@ -1953,7 +1966,7 @@ static void sx_unthrottle(struct tty_struct *tty)
* this port in case we disabled flow control while the port
* was throttled
*/
- port->gs.flags &= ~SX_RX_THROTTLE;
+ port->gs.port.flags &= ~SX_RX_THROTTLE;
func_exit();
return;
}
@@ -2396,6 +2409,7 @@ static int sx_init_portstructs(int nboards, int nports)
board->ports = port;
for (j = 0; j < boards[i].nports; j++) {
sx_dprintk(SX_DEBUG_INIT, "initing port %d\n", j);
+ tty_port_init(&port->gs.port);
port->gs.magic = SX_MAGIC;
port->gs.close_delay = HZ / 2;
port->gs.closing_wait = 30 * HZ;
@@ -2408,9 +2422,6 @@ static int sx_init_portstructs(int nboards, int nports)
/*
* Initializing wait queue
*/
- init_waitqueue_head(&port->gs.open_wait);
- init_waitqueue_head(&port->gs.close_wait);
-
port++;
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 20:41:56 +0100