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#include <linux/types.h>
#include <linux/ctype.h> /* for isdigit() and friends */
#include <linux/fs.h>
#include <linux/mm.h> /* for verify_area */
#include <linux/errno.h> /* for -EBUSY */
#include <linux/ioport.h> /* for check_region, request_region */
#include <linux/interrupt.h>
#include <linux/delay.h> /* for loops_per_sec */
#include <linux/kmod.h>
#include <linux/jiffies.h>
#include <linux/uaccess.h> /* for copy_from_user */
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/kthread.h>
#include "spk_priv.h"
#include "speakup.h"
#include "serialio.h"
#define MAXSYNTHS 16 /* Max number of synths in array. */
static struct spk_synth *synths[MAXSYNTHS];
struct spk_synth *synth;
char spk_pitch_buff[32] = "";
static int module_status;
bool spk_quiet_boot;
struct speakup_info_t speakup_info = {
/*
* This spinlock is used to protect the entire speakup machinery, and
* must be taken at each kernel->speakup transition and released at
* each corresponding speakup->kernel transition.
*
* The progression thread only interferes with the speakup machinery
* through the synth buffer, so only needs to take the lock
* while tinkering with the buffer.
*
* We use spin_lock/trylock_irqsave and spin_unlock_irqrestore with this
* spinlock because speakup needs to disable the keyboard IRQ.
*/
.spinlock = __SPIN_LOCK_UNLOCKED(speakup_info.spinlock),
.flushing = 0,
};
EXPORT_SYMBOL_GPL(speakup_info);
static int do_synth_init(struct spk_synth *in_synth);
int spk_serial_synth_probe(struct spk_synth *synth)
{
const struct old_serial_port *ser;
int failed = 0;
if ((synth->ser >= SPK_LO_TTY) && (synth->ser <= SPK_HI_TTY)) {
ser = spk_serial_init(synth->ser);
if (ser == NULL) {
failed = -1;
} else {
outb_p(0, ser->port);
mdelay(1);
outb_p('\r', ser->port);
}
} else {
failed = -1;
pr_warn("ttyS%i is an invalid port\n", synth->ser);
}
if (failed) {
pr_info("%s: not found\n", synth->long_name);
return -ENODEV;
}
pr_info("%s: ttyS%i, Driver Version %s\n",
synth->long_name, synth->ser, synth->version);
synth->alive = 1;
return 0;
}
EXPORT_SYMBOL_GPL(spk_serial_synth_probe);
/* Main loop of the progression thread: keep eating from the buffer
* and push to the serial port, waiting as needed
*
* For devices that have a "full" notification mechanism, the driver can
* adapt the loop the way they prefer.
*/
void spk_do_catch_up(struct spk_synth *synth)
{
u_char ch;
unsigned long flags;
unsigned long jiff_max;
struct var_t *delay_time;
struct var_t *full_time;
struct var_t *jiffy_delta;
int jiffy_delta_val;
int delay_time_val;
int full_time_val;
jiffy_delta = spk_get_var(JIFFY);
full_time = spk_get_var(FULL);
delay_time = spk_get_var(DELAY);
spin_lock_irqsave(&speakup_info.spinlock, flags);
jiffy_delta_val = jiffy_delta->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
jiff_max = jiffies + jiffy_delta_val;
while (!kthread_should_stop()) {
spin_lock_irqsave(&speakup_info.spinlock, flags);
if (speakup_info.flushing) {
speakup_info.flushing = 0;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
synth->flush(synth);
continue;
}
if (synth_buffer_empty()) {
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
break;
}
ch = synth_buffer_peek();
set_current_state(TASK_INTERRUPTIBLE);
full_time_val = full_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (ch == '\n')
ch = synth->procspeech;
if (!spk_serial_out(ch)) {
schedule_timeout(msecs_to_jiffies(full_time_val));
continue;
}
if (time_after_eq(jiffies, jiff_max) && (ch == SPACE)) {
spin_lock_irqsave(&speakup_info.spinlock, flags);
jiffy_delta_val = jiffy_delta->u.n.value;
delay_time_val = delay_time->u.n.value;
full_time_val = full_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (spk_serial_out(synth->procspeech))
schedule_timeout(
msecs_to_jiffies(delay_time_val));
else
schedule_timeout(
msecs_to_jiffies(full_time_val));
jiff_max = jiffies + jiffy_delta_val;
}
set_current_state(TASK_RUNNING);
spin_lock_irqsave(&speakup_info.spinlock, flags);
synth_buffer_getc();
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
}
spk_serial_out(synth->procspeech);
}
EXPORT_SYMBOL_GPL(spk_do_catch_up);
const char *spk_synth_immediate(struct spk_synth *synth, const char *buff)
{
u_char ch;
while ((ch = *buff)) {
if (ch == '\n')
ch = synth->procspeech;
if (spk_wait_for_xmitr())
outb(ch, speakup_info.port_tts);
else
return buff;
buff++;
}
return NULL;
}
EXPORT_SYMBOL_GPL(spk_synth_immediate);
void spk_synth_flush(struct spk_synth *synth)
{
spk_serial_out(synth->clear);
}
EXPORT_SYMBOL_GPL(spk_synth_flush);
int spk_synth_is_alive_nop(struct spk_synth *synth)
{
synth->alive = 1;
return 1;
}
EXPORT_SYMBOL_GPL(spk_synth_is_alive_nop);
int spk_synth_is_alive_restart(struct spk_synth *synth)
{
if (synth->alive)
return 1;
if (!synth->alive && spk_wait_for_xmitr() > 0) {
/* restart */
synth->alive = 1;
synth_printf("%s", synth->init);
return 2; /* reenabled */
}
pr_warn("%s: can't restart synth\n", synth->long_name);
return 0;
}
EXPORT_SYMBOL_GPL(spk_synth_is_alive_restart);
static void thread_wake_up(u_long data)
{
wake_up_interruptible_all(&speakup_event);
}
static DEFINE_TIMER(thread_timer, thread_wake_up, 0, 0);
void synth_start(void)
{
struct var_t *trigger_time;
if (!synth->alive) {
synth_buffer_clear();
return;
}
trigger_time = spk_get_var(TRIGGER);
if (!timer_pending(&thread_timer))
mod_timer(&thread_timer, jiffies +
msecs_to_jiffies(trigger_time->u.n.value));
}
void spk_do_flush(void)
{
if (!synth)
return;
speakup_info.flushing = 1;
synth_buffer_clear();
if (synth->alive) {
if (spk_pitch_shift) {
synth_printf("%s", spk_pitch_buff);
spk_pitch_shift = 0;
}
}
wake_up_interruptible_all(&speakup_event);
wake_up_process(speakup_task);
}
void synth_write(const char *buf, size_t count)
{
while (count--)
synth_buffer_add(*buf++);
synth_start();
}
void synth_printf(const char *fmt, ...)
{
va_list args;
unsigned char buf[160], *p;
int r;
va_start(args, fmt);
r = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (r > sizeof(buf) - 1)
r = sizeof(buf) - 1;
p = buf;
while (r--)
synth_buffer_add(*p++);
synth_start();
}
EXPORT_SYMBOL_GPL(synth_printf);
static int index_count;
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