* Fixed DEF_TX value that caused the serial transmitter pin (txd) to go to 0 when
* closing the last filehandle, NASTY!.
* Added break generation, not tested though!
- * Use SA_SHIRQ when request_irq() for ser2 and ser3 (shared with) par0 and par1.
+ * Use IRQF_SHARED when request_irq() for ser2 and ser3 (shared with) par0 and par1.
* You can't use them at the same time (yet..), but you can hopefully switch
* between ser2/par0, ser3/par1 with the same kernel config.
* Replaced some magic constants with defines
static char *serial_version = "$Revision: 1.25 $";
-#include <linux/config.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <linux/kernel.h>
#include <linux/mutex.h>
+#include <linux/bitops.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/system.h>
-#include <asm/bitops.h>
#include <linux/delay.h>
#include <asm/arch/svinto.h>
* TTY_THRESHOLD_THROTTLE/UNTHROTTLE=128
* BUF_SIZE can't be > 128
*/
+#define CRIS_BUF_SIZE 512
+
/* Currently 16 descriptors x 128 bytes = 2048 bytes */
#define SERIAL_DESCR_BUF_SIZE 256
#define NR_PORTS (sizeof(rs_table)/sizeof(struct e100_serial))
-static struct termios *serial_termios[NR_PORTS];
-static struct termios *serial_termios_locked[NR_PORTS];
+static struct ktermios *serial_termios[NR_PORTS];
+static struct ktermios *serial_termios_locked[NR_PORTS];
#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
static struct fast_timer fast_timers[NR_PORTS];
#endif
*/
static irqreturn_t
-tr_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+tr_interrupt(int irq, void *dev_id)
{
struct e100_serial *info;
unsigned long ireg;
/* dma input channel interrupt handler */
static irqreturn_t
-rec_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+rec_interrupt(int irq, void *dev_id)
{
struct e100_serial *info;
unsigned long ireg;
return;
}
- length = tty->flip.count;
- /* Don't flip more than the ldisc has room for.
- * The return value from ldisc.receive_room(tty) - might not be up to
- * date, the previous flip of up to TTY_FLIPBUF_SIZE might be on the
- * processed and not accounted for yet.
- * Since we use DMA, 1 SERIAL_DESCR_BUF_SIZE could be on the way.
- * Lets buffer data here and let flow control take care of it.
- * Since we normally flip large chunks, the ldisc don't react
- * with throttle until too late if we flip to much.
- */
- max_flip_size = tty->ldisc.receive_room(tty);
- if (max_flip_size < 0)
- max_flip_size = 0;
- if (max_flip_size <= (TTY_FLIPBUF_SIZE + /* Maybe not accounted for */
- length + info->recv_cnt + /* We have this queued */
- 2*SERIAL_DESCR_BUF_SIZE + /* This could be on the way */
- TTY_THRESHOLD_THROTTLE)) { /* Some slack */
- /* check TTY_THROTTLED first so it indicates our state */
- if (!test_and_set_bit(TTY_THROTTLED, &tty->flags)) {
- DFLOW(DEBUG_LOG(info->line,"flush_to_flip throttles room %lu\n", max_flip_size));
- rs_throttle(tty);
- }
-#if 0
- else if (max_flip_size <= (TTY_FLIPBUF_SIZE + /* Maybe not accounted for */
- length + info->recv_cnt + /* We have this queued */
- SERIAL_DESCR_BUF_SIZE + /* This could be on the way */
- TTY_THRESHOLD_THROTTLE)) { /* Some slack */
- DFLOW(DEBUG_LOG(info->line,"flush_to_flip throttles again! %lu\n", max_flip_size));
- rs_throttle(tty);
- }
-#endif
- }
-
- if (max_flip_size > TTY_FLIPBUF_SIZE)
- max_flip_size = TTY_FLIPBUF_SIZE;
-
- while ((buffer = info->first_recv_buffer) && length < max_flip_size) {
+ while ((buffer = info->first_recv_buffer) != NULL) {
unsigned int count = buffer->length;
- if (length + count > max_flip_size)
- count = max_flip_size - length;
+ count = tty_buffer_request_room(tty, count);
+ if (count == 0) /* Throttle ?? */
+ break;
- memcpy(tty->flip.char_buf_ptr + length, buffer->buffer, count);
- memset(tty->flip.flag_buf_ptr + length, TTY_NORMAL, count);
- tty->flip.flag_buf_ptr[length] = buffer->error;
+ if (count > 1)
+ tty_insert_flip_strings(tty, buffer->buffer, count - 1);
+ tty_insert_flip_char(tty, buffer->buffer[count-1], buffer->error);
- length += count;
info->recv_cnt -= count;
- DFLIP(DEBUG_LOG(info->line,"flip: %i\n", length));
if (count == buffer->length) {
info->first_recv_buffer = buffer->next;
if (!info->first_recv_buffer)
info->last_recv_buffer = NULL;
- tty->flip.count = length;
- DFLIP(if (tty->ldisc.chars_in_buffer(tty) > 3500) {
- DEBUG_LOG(info->line, "ldisc %lu\n",
- tty->ldisc.chars_in_buffer(tty));
- DEBUG_LOG(info->line, "flip.count %lu\n",
- tty->flip.count);
- }
- );
restore_flags(flags);
DFLIP(
if (1) {
-
- if (test_bit(TTY_DONT_FLIP, &tty->flags)) {
- DEBUG_LOG(info->line, "*** TTY_DONT_FLIP set flip.count %i ***\n", tty->flip.count);
- DEBUG_LOG(info->line, "*** recv_cnt %i\n", info->recv_cnt);
- } else {
- }
DEBUG_LOG(info->line, "*** rxtot %i\n", info->icount.rx);
DEBUG_LOG(info->line, "ldisc %lu\n", tty->ldisc.chars_in_buffer(tty));
DEBUG_LOG(info->line, "room %lu\n", tty->ldisc.receive_room(tty));
printk("!NO TTY!\n");
return info;
}
- if (tty->flip.count >= TTY_FLIPBUF_SIZE - TTY_THRESHOLD_THROTTLE) {
+ if (tty->flip.count >= CRIS_BUF_SIZE - TTY_THRESHOLD_THROTTLE) {
/* check TTY_THROTTLED first so it indicates our state */
if (!test_and_set_bit(TTY_THROTTLED, &tty->flags)) {
DFLOW(DEBUG_LOG(info->line, "rs_throttle flip.count: %i\n", tty->flip.count));
rs_throttle(tty);
}
}
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ if (tty->flip.count >= CRIS_BUF_SIZE) {
DEBUG_LOG(info->line, "force FLIP! %i\n", tty->flip.count);
tty->flip.work.func((void *) tty);
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ if (tty->flip.count >= CRIS_BUF_SIZE) {
DEBUG_LOG(info->line, "FLIP FULL! %i\n", tty->flip.count);
return info; /* if TTY_DONT_FLIP is set */
}
* ser_int duration: just sending: 8-15 us normally, up to 73 us
*/
static irqreturn_t
-ser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+ser_interrupt(int irq, void *dev_id)
{
static volatile int tx_started = 0;
struct e100_serial *info;
if (!tty)
return;
- if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
- wake_up_interruptible(&tty->write_wait);
- }
+ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event))
+ tty_wakeup(tty);
}
static int
info->xmit.head = info->xmit.tail = 0;
restore_flags(flags);
- wake_up_interruptible(&tty->write_wait);
-
- if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- tty->ldisc.write_wakeup)
- (tty->ldisc.write_wakeup)(tty);
+ tty_wakeup(tty);
}
/*
}
static void
-rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
+rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
struct e100_serial *info = (struct e100_serial *)tty->driver_data;
/* rs_init inits the driver at boot (using the module_init chain) */
-static struct tty_operations rs_ops = {
+static const struct tty_operations rs_ops = {
.open = rs_open,
.close = rs_close,
.write = rs_write,
driver->init_termios = tty_std_termios;
driver->init_termios.c_cflag =
B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
- driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+ driver->init_termios.c_ispeed = 115200;
+ driver->init_termios.c_ospeed = 115200;
+ driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
driver->termios = serial_termios;
driver->termios_locked = serial_termios_locked;
/* Not needed in simulator. May only complicate stuff. */
/* hook the irq's for DMA channel 6 and 7, serial output and input, and some more... */
- if (request_irq(SERIAL_IRQ_NBR, ser_interrupt, SA_SHIRQ | SA_INTERRUPT, "serial ", NULL))
+ if (request_irq(SERIAL_IRQ_NBR, ser_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial ", NULL))
panic("irq8");
#ifdef CONFIG_ETRAX_SERIAL_PORT0
#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT
- if (request_irq(SER0_DMA_TX_IRQ_NBR, tr_interrupt, SA_INTERRUPT, "serial 0 dma tr", NULL))
+ if (request_irq(SER0_DMA_TX_IRQ_NBR, tr_interrupt, IRQF_DISABLED, "serial 0 dma tr", NULL))
panic("irq22");
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN
- if (request_irq(SER0_DMA_RX_IRQ_NBR, rec_interrupt, SA_INTERRUPT, "serial 0 dma rec", NULL))
+ if (request_irq(SER0_DMA_RX_IRQ_NBR, rec_interrupt, IRQF_DISABLED, "serial 0 dma rec", NULL))
panic("irq23");
#endif
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT1
#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA8_OUT
- if (request_irq(SER1_DMA_TX_IRQ_NBR, tr_interrupt, SA_INTERRUPT, "serial 1 dma tr", NULL))
+ if (request_irq(SER1_DMA_TX_IRQ_NBR, tr_interrupt, IRQF_DISABLED, "serial 1 dma tr", NULL))
panic("irq24");
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA9_IN
- if (request_irq(SER1_DMA_RX_IRQ_NBR, rec_interrupt, SA_INTERRUPT, "serial 1 dma rec", NULL))
+ if (request_irq(SER1_DMA_RX_IRQ_NBR, rec_interrupt, IRQF_DISABLED, "serial 1 dma rec", NULL))
panic("irq25");
#endif
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT2
/* DMA Shared with par0 (and SCSI0 and ATA) */
#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT
- if (request_irq(SER2_DMA_TX_IRQ_NBR, tr_interrupt, SA_SHIRQ | SA_INTERRUPT, "serial 2 dma tr", NULL))
+ if (request_irq(SER2_DMA_TX_IRQ_NBR, tr_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial 2 dma tr", NULL))
panic("irq18");
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN
- if (request_irq(SER2_DMA_RX_IRQ_NBR, rec_interrupt, SA_SHIRQ | SA_INTERRUPT, "serial 2 dma rec", NULL))
+ if (request_irq(SER2_DMA_RX_IRQ_NBR, rec_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial 2 dma rec", NULL))
panic("irq19");
#endif
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT3
/* DMA Shared with par1 (and SCSI1 and Extern DMA 0) */
#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA4_OUT
- if (request_irq(SER3_DMA_TX_IRQ_NBR, tr_interrupt, SA_SHIRQ | SA_INTERRUPT, "serial 3 dma tr", NULL))
+ if (request_irq(SER3_DMA_TX_IRQ_NBR, tr_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial 3 dma tr", NULL))
panic("irq20");
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA5_IN
- if (request_irq(SER3_DMA_RX_IRQ_NBR, rec_interrupt, SA_SHIRQ | SA_INTERRUPT, "serial 3 dma rec", NULL))
+ if (request_irq(SER3_DMA_RX_IRQ_NBR, rec_interrupt, IRQF_SHARED | IRQF_DISABLED, "serial 3 dma rec", NULL))
panic("irq21");
#endif
#endif
#ifdef CONFIG_ETRAX_SERIAL_FLUSH_DMA_FAST
- if (request_irq(TIMER1_IRQ_NBR, timeout_interrupt, SA_SHIRQ | SA_INTERRUPT,
+ if (request_irq(TIMER1_IRQ_NBR, timeout_interrupt, IRQF_SHARED | IRQF_DISABLED,
"fast serial dma timeout", NULL)) {
printk(KERN_CRIT "err: timer1 irq\n");
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff