--- /dev/null
+#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;
+static int sentence_count;
+
+void spk_reset_index_count(int sc)
+{
+ static int first = 1;
+
+ if (first)
+ first = 0;
+ else
+ synth->get_index();
+ index_count = 0;
+ sentence_count = sc;
+}
+
+int synth_supports_indexing(void)
+{
+ if (synth->get_index != NULL)
+ return 1;
+ return 0;
+}
+
+void synth_insert_next_index(int sent_num)
+{
+ int out;
+
+ if (synth->alive) {
+ if (sent_num == 0) {
+ synth->indexing.currindex++;
+ index_count++;
+ if (synth->indexing.currindex >
+ synth->indexing.highindex)
+ synth->indexing.currindex =
+ synth->indexing.lowindex;
+ }
+
+ out = synth->indexing.currindex * 10 + sent_num;
+ synth_printf(synth->indexing.command, out, out);
+ }
+}
+
+void spk_get_index_count(int *linecount, int *sentcount)
+{
+ int ind = synth->get_index();
+
+ if (ind) {
+ sentence_count = ind % 10;
+
+ if ((ind / 10) <= synth->indexing.currindex)
+ index_count = synth->indexing.currindex-(ind/10);
+ else
+ index_count = synth->indexing.currindex
+ -synth->indexing.lowindex
+ + synth->indexing.highindex-(ind/10)+1;
+
+ }
+ *sentcount = sentence_count;
+ *linecount = index_count;
+}
+
+static struct resource synth_res;
+
+int synth_request_region(unsigned long start, unsigned long n)
+{
+ struct resource *parent = &ioport_resource;
+
+ memset(&synth_res, 0, sizeof(synth_res));
+ synth_res.name = synth->name;
+ synth_res.start = start;
+ synth_res.end = start + n - 1;
+ synth_res.flags = IORESOURCE_BUSY;
+ return request_resource(parent, &synth_res);
+}
+EXPORT_SYMBOL_GPL(synth_request_region);
+
+int synth_release_region(unsigned long start, unsigned long n)
+{
+ return release_resource(&synth_res);
+}
+EXPORT_SYMBOL_GPL(synth_release_region);
+
+struct var_t synth_time_vars[] = {
+ { DELAY, .u.n = {NULL, 100, 100, 2000, 0, 0, NULL } },
+ { TRIGGER, .u.n = {NULL, 20, 10, 2000, 0, 0, NULL } },
+ { JIFFY, .u.n = {NULL, 50, 20, 200, 0, 0, NULL } },
+ { FULL, .u.n = {NULL, 400, 200, 60000, 0, 0, NULL } },
+ V_LAST_VAR
+};
+
+/* called by: speakup_init() */
+int synth_init(char *synth_name)
+{
+ int i;
+ int ret = 0;
+ struct spk_synth *synth = NULL;
+
+ if (synth_name == NULL)
+ return 0;
+
+ if (strcmp(synth_name, "none") == 0) {
+ mutex_lock(&spk_mutex);
+ synth_release();
+ mutex_unlock(&spk_mutex);
+ return 0;
+ }
+
+ mutex_lock(&spk_mutex);
+ /* First, check if we already have it loaded. */
+ for (i = 0; i < MAXSYNTHS && synths[i] != NULL; i++)
+ if (strcmp(synths[i]->name, synth_name) == 0)
+ synth = synths[i];
+
+ /* If we got one, initialize it now. */
+ if (synth)
+ ret = do_synth_init(synth);
+ else
+ ret = -ENODEV;
+ mutex_unlock(&spk_mutex);
+
+ return ret;
+}
+
+/* called by: synth_add() */
+static int do_synth_init(struct spk_synth *in_synth)
+{
+ struct var_t *var;
+
+ synth_release();
+ if (in_synth->checkval != SYNTH_CHECK)
+ return -EINVAL;
+ synth = in_synth;
+ synth->alive = 0;
+ pr_warn("synth probe\n");
+ if (synth->probe(synth) < 0) {
+ pr_warn("%s: device probe failed\n", in_synth->name);
+ synth = NULL;
+ return -ENODEV;
+ }
+ synth_time_vars[0].u.n.value =
+ synth_time_vars[0].u.n.default_val = synth->delay;
+ synth_time_vars[1].u.n.value =
+ synth_time_vars[1].u.n.default_val = synth->trigger;
+ synth_time_vars[2].u.n.value =
+ synth_time_vars[2].u.n.default_val = synth->jiffies;
+ synth_time_vars[3].u.n.value =
+ synth_time_vars[3].u.n.default_val = synth->full;
+ synth_printf("%s", synth->init);
+ for (var = synth->vars;
+ (var->var_id >= 0) && (var->var_id < MAXVARS); var++)
+ speakup_register_var(var);
+ if (!spk_quiet_boot)
+ synth_printf("%s found\n", synth->long_name);
+ if (synth->attributes.name
+ && sysfs_create_group(speakup_kobj, &(synth->attributes)) < 0)
+ return -ENOMEM;
+ synth_flags = synth->flags;
+ wake_up_interruptible_all(&speakup_event);
+ if (speakup_task)
+ wake_up_process(speakup_task);
+ return 0;
+}
+
+void synth_release(void)
+{
+ struct var_t *var;
+ unsigned long flags;
+
+ if (synth == NULL)
+ return;
+ spin_lock_irqsave(&speakup_info.spinlock, flags);
+ pr_info("releasing synth %s\n", synth->name);
+ synth->alive = 0;
+ del_timer(&thread_timer);
+ spin_unlock_irqrestore(&speakup_info.spinlock, flags);
+ if (synth->attributes.name)
+ sysfs_remove_group(speakup_kobj, &(synth->attributes));
+ for (var = synth->vars; var->var_id != MAXVARS; var++)
+ speakup_unregister_var(var->var_id);
+ spk_stop_serial_interrupt();
+ synth->release();
+ synth = NULL;
+}
+
+/* called by: all_driver_init() */
+int synth_add(struct spk_synth *in_synth)
+{
+ int i;
+ int status = 0;
+
+ mutex_lock(&spk_mutex);
+ for (i = 0; i < MAXSYNTHS && synths[i] != NULL; i++)
+ /* synth_remove() is responsible for rotating the array down */
+ if (in_synth == synths[i]) {
+ mutex_unlock(&spk_mutex);
+ return 0;
+ }
+ if (i == MAXSYNTHS) {
+ pr_warn("Error: attempting to add a synth past end of array\n");
+ mutex_unlock(&spk_mutex);
+ return -1;
+ }
+ synths[i++] = in_synth;
+ synths[i] = NULL;
+ if (in_synth->startup)
+ status = do_synth_init(in_synth);
+ mutex_unlock(&spk_mutex);
+ return status;
+}
+EXPORT_SYMBOL_GPL(synth_add);
+
+void synth_remove(struct spk_synth *in_synth)
+{
+ int i;
+
+ mutex_lock(&spk_mutex);
+ if (synth == in_synth)
+ synth_release();
+ for (i = 0; synths[i] != NULL; i++) {
+ if (in_synth == synths[i])
+ break;
+ }
+ for ( ; synths[i] != NULL; i++) /* compress table */
+ synths[i] = synths[i+1];
+ module_status = 0;
+ mutex_unlock(&spk_mutex);
+}
+EXPORT_SYMBOL_GPL(synth_remove);
+
+short spk_punc_masks[] = { 0, SOME, MOST, PUNC, PUNC|B_SYM };
Code Review / kvmfornfv.git / blobdiff