#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/major.h>
+#include <linux/smp_lock.h>
#include <linux/string.h>
#include <linux/fcntl.h>
#include <linux/ptrace.h>
};
struct moxa_port {
+ struct tty_port port;
struct moxa_board_conf *board;
- struct tty_struct *tty;
void __iomem *tableAddr;
int type;
- int close_delay;
- unsigned int count;
- int asyncflags;
int cflag;
unsigned long statusflags;
- wait_queue_head_t open_wait;
u8 DCDState;
u8 lineCtrl;
static void moxa_poll(unsigned long);
static void moxa_set_tty_param(struct tty_struct *, struct ktermios *);
static void moxa_setup_empty_event(struct tty_struct *);
-static void moxa_shut_down(struct moxa_port *);
+static void moxa_shut_down(struct tty_struct *);
+static int moxa_carrier_raised(struct tty_port *);
/*
* moxa board interface functions:
*/
static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int);
static int MoxaPortLineStatus(struct moxa_port *);
static void MoxaPortFlushData(struct moxa_port *, int);
-static int MoxaPortWriteData(struct moxa_port *, const unsigned char *, int);
+static int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int);
static int MoxaPortReadData(struct moxa_port *);
static int MoxaPortTxQueue(struct moxa_port *);
static int MoxaPortRxQueue(struct moxa_port *);
for (i = 0; i < MAX_BOARDS; i++) {
p = moxa_boards[i].ports;
for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) {
+ struct tty_struct *ttyp;
memset(&tmp, 0, sizeof(tmp));
if (!moxa_boards[i].ready)
goto copy;
if (status & 4)
tmp.dcd = 1;
- if (!p->tty || !p->tty->termios)
+ ttyp = tty_port_tty_get(&p->port);
+ if (!ttyp || !ttyp->termios)
tmp.cflag = p->cflag;
else
- tmp.cflag = p->tty->termios->c_cflag;
+ tmp.cflag = ttyp->termios->c_cflag;
+ tty_kref_put(tty);
copy:
if (copy_to_user(argm, &tmp, sizeof(tmp))) {
mutex_unlock(&moxa_openlock);
return ret;
}
-static void moxa_break_ctl(struct tty_struct *tty, int state)
+static int moxa_break_ctl(struct tty_struct *tty, int state)
{
struct moxa_port *port = tty->driver_data;
moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak,
Magic_code);
+ return 0;
}
static const struct tty_operations moxa_ops = {
.tiocmset = moxa_tiocmset,
};
+static const struct tty_port_operations moxa_port_ops = {
+ .carrier_raised = moxa_carrier_raised,
+};
+
static struct tty_driver *moxaDriver;
static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0);
static DEFINE_SPINLOCK(moxa_lock);
size_t len)
{
void __iomem *baseAddr = brd->basemem;
- const u16 *uptr = ptr;
+ const __le16 *uptr = ptr;
size_t wlen, len2, j;
unsigned long key, loadbuf, loadlen, checksum, checksum_ok;
unsigned int i, retry;
static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw)
{
- void *ptr = fw->data;
+ const void *ptr = fw->data;
char rsn[64];
u16 lens[5];
size_t len;
u8 model; /* C218T=1, C320T=2, CP204=3 */
u8 reserved2[8];
__le16 len[5];
- } *hdr = ptr;
+ } const *hdr = ptr;
BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens));
}
for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) {
+ tty_port_init(&p->port);
+ p->port.ops = &moxa_port_ops;
p->type = PORT_16550A;
- p->close_delay = 5 * HZ / 10;
p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL;
- init_waitqueue_head(&p->open_wait);
}
switch (brd->boardType) {
ret = request_firmware(&fw, file, dev);
if (ret) {
- printk(KERN_ERR "request_firmware failed\n");
+ printk(KERN_ERR "MOXA: request_firmware failed. Make sure "
+ "you've placed '%s' file into your firmware "
+ "loader directory (e.g. /lib/firmware)\n",
+ file);
goto err_free;
}
/* pci hot-un-plug support */
for (a = 0; a < brd->numPorts; a++)
- if (brd->ports[a].asyncflags & ASYNC_INITIALIZED)
- tty_hangup(brd->ports[a].tty);
+ if (brd->ports[a].port.flags & ASYNC_INITIALIZED) {
+ struct tty_struct *tty = tty_port_tty_get(
+ &brd->ports[a].port);
+ if (tty) {
+ tty_hangup(tty);
+ tty_kref_put(tty);
+ }
+ }
while (1) {
opened = 0;
for (a = 0; a < brd->numPorts; a++)
- if (brd->ports[a].asyncflags & ASYNC_INITIALIZED)
+ if (brd->ports[a].port.flags & ASYNC_INITIALIZED)
opened++;
mutex_unlock(&moxa_openlock);
if (!opened)
goto err;
}
- board->basemem = ioremap(pci_resource_start(pdev, 2), 0x4000);
+ board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000);
if (board->basemem == NULL) {
dev_err(&pdev->dev, "can't remap io space 2\n");
goto err_reg;
brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 :
numports[i];
brd->busType = MOXA_BUS_TYPE_ISA;
- brd->basemem = ioremap(baseaddr[i], 0x4000);
+ brd->basemem = ioremap_nocache(baseaddr[i], 0x4000);
if (!brd->basemem) {
printk(KERN_ERR "MOXA: can't remap %lx\n",
baseaddr[i]);
module_init(moxa_init);
module_exit(moxa_exit);
-static void moxa_close_port(struct moxa_port *ch)
+static void moxa_close_port(struct tty_struct *tty)
{
- moxa_shut_down(ch);
+ struct moxa_port *ch = tty->driver_data;
+ moxa_shut_down(tty);
MoxaPortFlushData(ch, 2);
- ch->asyncflags &= ~ASYNC_NORMAL_ACTIVE;
- ch->tty->driver_data = NULL;
- ch->tty = NULL;
+ ch->port.flags &= ~ASYNC_NORMAL_ACTIVE;
+ tty->driver_data = NULL;
+ tty_port_tty_set(&ch->port, NULL);
+}
+
+static int moxa_carrier_raised(struct tty_port *port)
+{
+ struct moxa_port *ch = container_of(port, struct moxa_port, port);
+ int dcd;
+
+ spin_lock_bh(&moxa_lock);
+ dcd = ch->DCDState;
+ spin_unlock_bh(&moxa_lock);
+ return dcd;
}
static int moxa_block_till_ready(struct tty_struct *tty, struct file *filp,
struct moxa_port *ch)
{
+ struct tty_port *port = &ch->port;
DEFINE_WAIT(wait);
int retval = 0;
u8 dcd;
while (1) {
- prepare_to_wait(&ch->open_wait, &wait, TASK_INTERRUPTIBLE);
+ prepare_to_wait(&port->open_wait, &wait, TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp)) {
#ifdef SERIAL_DO_RESTART
retval = -ERESTARTSYS;
#endif
break;
}
- spin_lock_bh(&moxa_lock);
- dcd = ch->DCDState;
- spin_unlock_bh(&moxa_lock);
+ dcd = tty_port_carrier_raised(port);
if (dcd)
break;
}
schedule();
}
- finish_wait(&ch->open_wait, &wait);
+ finish_wait(&port->open_wait, &wait);
return retval;
}
return -ENODEV;
}
+ if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) {
+ mutex_unlock(&moxa_openlock);
+ return -ENODEV;
+ }
+
ch = &brd->ports[port % MAX_PORTS_PER_BOARD];
- ch->count++;
+ ch->port.count++;
tty->driver_data = ch;
- ch->tty = tty;
- if (!(ch->asyncflags & ASYNC_INITIALIZED)) {
+ tty_port_tty_set(&ch->port, tty);
+ if (!(ch->port.flags & ASYNC_INITIALIZED)) {
ch->statusflags = 0;
moxa_set_tty_param(tty, tty->termios);
MoxaPortLineCtrl(ch, 1, 1);
MoxaPortEnable(ch);
MoxaSetFifo(ch, ch->type == PORT_16550A);
- ch->asyncflags |= ASYNC_INITIALIZED;
+ ch->port.flags |= ASYNC_INITIALIZED;
}
mutex_unlock(&moxa_openlock);
retval = moxa_block_till_ready(tty, filp, ch);
mutex_lock(&moxa_openlock);
if (retval) {
- if (ch->count) /* 0 means already hung up... */
- if (--ch->count == 0)
- moxa_close_port(ch);
+ if (ch->port.count) /* 0 means already hung up... */
+ if (--ch->port.count == 0)
+ moxa_close_port(tty);
} else
- ch->asyncflags |= ASYNC_NORMAL_ACTIVE;
+ ch->port.flags |= ASYNC_NORMAL_ACTIVE;
mutex_unlock(&moxa_openlock);
return retval;
ch = tty->driver_data;
if (ch == NULL)
goto unlock;
- if (tty->count == 1 && ch->count != 1) {
+ if (tty->count == 1 && ch->port.count != 1) {
printk(KERN_WARNING "moxa_close: bad serial port count; "
- "tty->count is 1, ch->count is %d\n", ch->count);
- ch->count = 1;
+ "tty->count is 1, ch->port.count is %d\n", ch->port.count);
+ ch->port.count = 1;
}
- if (--ch->count < 0) {
+ if (--ch->port.count < 0) {
printk(KERN_WARNING "moxa_close: bad serial port count, "
"device=%s\n", tty->name);
- ch->count = 0;
+ ch->port.count = 0;
}
- if (ch->count)
+ if (ch->port.count)
goto unlock;
ch->cflag = tty->termios->c_cflag;
- if (ch->asyncflags & ASYNC_INITIALIZED) {
+ if (ch->port.flags & ASYNC_INITIALIZED) {
moxa_setup_empty_event(tty);
tty_wait_until_sent(tty, 30 * HZ); /* 30 seconds timeout */
}
- moxa_close_port(ch);
+ moxa_close_port(tty);
unlock:
mutex_unlock(&moxa_openlock);
}
return 0;
spin_lock_bh(&moxa_lock);
- len = MoxaPortWriteData(ch, buf, count);
+ len = MoxaPortWriteData(tty, buf, count);
spin_unlock_bh(&moxa_lock);
ch->statusflags |= LOWWAIT;
*/
if (ch == NULL)
return 0;
+ lock_kernel();
chars = MoxaPortTxQueue(ch);
if (chars) {
/*
if (!(ch->statusflags & EMPTYWAIT))
moxa_setup_empty_event(tty);
}
+ unlock_kernel();
return chars;
}
return;
moxa_set_tty_param(tty, old_termios);
if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty))
- wake_up_interruptible(&ch->open_wait);
+ wake_up_interruptible(&ch->port.open_wait);
}
static void moxa_stop(struct tty_struct *tty)
mutex_unlock(&moxa_openlock);
return;
}
- ch->count = 0;
- moxa_close_port(ch);
+ ch->port.count = 0;
+ moxa_close_port(tty);
mutex_unlock(&moxa_openlock);
- wake_up_interruptible(&ch->open_wait);
+ wake_up_interruptible(&ch->port.open_wait);
}
static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd)
{
+ struct tty_struct *tty;
dcd = !!dcd;
- if (dcd != p->DCDState && p->tty && C_CLOCAL(p->tty)) {
- if (!dcd)
- tty_hangup(p->tty);
+ if (dcd != p->DCDState) {
+ tty = tty_port_tty_get(&p->port);
+ if (tty && C_CLOCAL(tty) && !dcd)
+ tty_hangup(tty);
+ tty_kref_put(tty);
}
p->DCDState = dcd;
}
static int moxa_poll_port(struct moxa_port *p, unsigned int handle,
u16 __iomem *ip)
{
- struct tty_struct *tty = p->tty;
+ struct tty_struct *tty = tty_port_tty_get(&p->port);
void __iomem *ofsAddr;
- unsigned int inited = p->asyncflags & ASYNC_INITIALIZED;
+ unsigned int inited = p->port.flags & ASYNC_INITIALIZED;
u16 intr;
if (tty) {
}
if (!handle) /* nothing else to do */
- return 0;
+ goto put;
intr = readw(ip); /* port irq status */
if (intr == 0)
- return 0;
+ goto put;
writew(0, ip); /* ACK port */
ofsAddr = p->tableAddr;
ofsAddr + HostStat);
if (!inited)
- return 0;
+ goto put;
if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */
tty_insert_flip_char(tty, 0, TTY_BREAK);
if (intr & IntrLine)
moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state);
+put:
+ tty_kref_put(tty);
return 0;
}
spin_unlock_bh(&moxa_lock);
}
-static void moxa_shut_down(struct moxa_port *ch)
+static void moxa_shut_down(struct tty_struct *tty)
{
- struct tty_struct *tp = ch->tty;
+ struct moxa_port *ch = tty->driver_data;
- if (!(ch->asyncflags & ASYNC_INITIALIZED))
+ if (!(ch->port.flags & ASYNC_INITIALIZED))
return;
MoxaPortDisable(ch);
/*
* If we're a modem control device and HUPCL is on, drop RTS & DTR.
*/
- if (C_HUPCL(tp))
+ if (C_HUPCL(tty))
MoxaPortLineCtrl(ch, 0, 0);
spin_lock_bh(&moxa_lock);
- ch->asyncflags &= ~ASYNC_INITIALIZED;
+ ch->port.flags &= ~ASYNC_INITIALIZED;
spin_unlock_bh(&moxa_lock);
}
return val;
}
-static int MoxaPortWriteData(struct moxa_port *port,
+static int MoxaPortWriteData(struct tty_struct *tty,
const unsigned char *buffer, int len)
{
+ struct moxa_port *port = tty->driver_data;
void __iomem *baseAddr, *ofsAddr, *ofs;
unsigned int c, total;
u16 head, tail, tx_mask, spage, epage;
c = (head > tail) ? (head - tail - 1) : (head - tail + tx_mask);
if (c > len)
c = len;
- moxaLog.txcnt[port->tty->index] += c;
+ moxaLog.txcnt[port->port.tty->index] += c;
total = c;
if (spage == epage) {
bufhead = readw(ofsAddr + Ofs_txb);
static int MoxaPortReadData(struct moxa_port *port)
{
- struct tty_struct *tty = port->tty;
+ struct tty_struct *tty = port->port.tty;
unsigned char *dst;
void __iomem *baseAddr, *ofsAddr, *ofs;
unsigned int count, len, total;
{
struct serial_struct tmp = {
.type = info->type,
- .line = info->tty->index,
- .flags = info->asyncflags,
+ .line = info->port.tty->index,
+ .flags = info->port.flags,
.baud_base = 921600,
- .close_delay = info->close_delay
+ .close_delay = info->port.close_delay
};
return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
}
if (!capable(CAP_SYS_ADMIN)) {
if (((new_serial.flags & ~ASYNC_USR_MASK) !=
- (info->asyncflags & ~ASYNC_USR_MASK)))
+ (info->port.flags & ~ASYNC_USR_MASK)))
return -EPERM;
} else
- info->close_delay = new_serial.close_delay * HZ / 100;
+ info->port.close_delay = new_serial.close_delay * HZ / 100;
new_serial.flags = (new_serial.flags & ~ASYNC_FLAGS);
- new_serial.flags |= (info->asyncflags & ASYNC_FLAGS);
+ new_serial.flags |= (info->port.flags & ASYNC_FLAGS);
MoxaSetFifo(info, new_serial.type == PORT_16550A);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff