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linux-zen-server/drivers/accessibility/speakup/speakup_decpc.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* This is the DECtalk PC speakup driver
*
* Some constants from DEC's DOS driver:
* Copyright (c) by Digital Equipment Corp.
*
* 386BSD DECtalk PC driver:
* Copyright (c) 1996 Brian Buhrow <buhrow@lothlorien.nfbcal.org>
*
* Linux DECtalk PC driver:
* Copyright (c) 1997 Nicolas Pitre <nico@cam.org>
*
* speakup DECtalk PC Internal driver:
* Copyright (c) 2003 David Borowski <david575@golden.net>
*
* All rights reserved.
*/
#include <linux/jiffies.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/kthread.h>
#include "spk_priv.h"
#include "speakup.h"
#define MODULE_init 0x0dec /* module in boot code */
#define MODULE_self_test 0x8800 /* module in self-test */
#define MODULE_reset 0xffff /* reinit the whole module */
#define MODE_mask 0xf000 /* mode bits in high nibble */
#define MODE_null 0x0000
#define MODE_test 0x2000 /* in testing mode */
#define MODE_status 0x8000
#define STAT_int 0x0001 /* running in interrupt mode */
#define STAT_tr_char 0x0002 /* character data to transmit */
#define STAT_rr_char 0x0004 /* ready to receive char data */
#define STAT_cmd_ready 0x0008 /* ready to accept commands */
#define STAT_dma_ready 0x0010 /* dma command ready */
#define STAT_digitized 0x0020 /* spc in digitized mode */
#define STAT_new_index 0x0040 /* new last index ready */
#define STAT_new_status 0x0080 /* new status posted */
#define STAT_dma_state 0x0100 /* dma state toggle */
#define STAT_index_valid 0x0200 /* indexs are valid */
#define STAT_flushing 0x0400 /* flush in progress */
#define STAT_self_test 0x0800 /* module in self test */
#define MODE_ready 0xc000 /* module ready for next phase */
#define READY_boot 0x0000
#define READY_kernel 0x0001
#define MODE_error 0xf000
#define CMD_mask 0xf000 /* mask for command nibble */
#define CMD_null 0x0000 /* post status */
#define CMD_control 0x1000 /* hard control command */
#define CTRL_mask 0x0F00 /* mask off control nibble */
#define CTRL_data 0x00FF /* mask to get data byte */
#define CTRL_null 0x0000 /* null control */
#define CTRL_vol_up 0x0100 /* increase volume */
#define CTRL_vol_down 0x0200 /* decrease volume */
#define CTRL_vol_set 0x0300 /* set volume */
#define CTRL_pause 0x0400 /* pause spc */
#define CTRL_resume 0x0500 /* resume spc clock */
#define CTRL_resume_spc 0x0001 /* resume spc soft pause */
#define CTRL_flush 0x0600 /* flush all buffers */
#define CTRL_int_enable 0x0700 /* enable status change ints */
#define CTRL_buff_free 0x0800 /* buffer remain count */
#define CTRL_buff_used 0x0900 /* buffer in use */
#define CTRL_speech 0x0a00 /* immediate speech change */
#define CTRL_SP_voice 0x0001 /* voice change */
#define CTRL_SP_rate 0x0002 /* rate change */
#define CTRL_SP_comma 0x0003 /* comma pause change */
#define CTRL_SP_period 0x0004 /* period pause change */
#define CTRL_SP_rate_delta 0x0005 /* delta rate change */
#define CTRL_SP_get_param 0x0006 /* return the desired parameter */
#define CTRL_last_index 0x0b00 /* get last index spoken */
#define CTRL_io_priority 0x0c00 /* change i/o priority */
#define CTRL_free_mem 0x0d00 /* get free paragraphs on module */
#define CTRL_get_lang 0x0e00 /* return bitmask of loaded languages */
#define CMD_test 0x2000 /* self-test request */
#define TEST_mask 0x0F00 /* isolate test field */
#define TEST_null 0x0000 /* no test requested */
#define TEST_isa_int 0x0100 /* assert isa irq */
#define TEST_echo 0x0200 /* make data in == data out */
#define TEST_seg 0x0300 /* set peek/poke segment */
#define TEST_off 0x0400 /* set peek/poke offset */
#define TEST_peek 0x0500 /* data out == *peek */
#define TEST_poke 0x0600 /* *peek == data in */
#define TEST_sub_code 0x00FF /* user defined test sub codes */
#define CMD_id 0x3000 /* return software id */
#define ID_null 0x0000 /* null id */
#define ID_kernel 0x0100 /* kernel code executing */
#define ID_boot 0x0200 /* boot code executing */
#define CMD_dma 0x4000 /* force a dma start */
#define CMD_reset 0x5000 /* reset module status */
#define CMD_sync 0x6000 /* kernel sync command */
#define CMD_char_in 0x7000 /* single character send */
#define CMD_char_out 0x8000 /* single character get */
#define CHAR_count_1 0x0100 /* one char in cmd_low */
#define CHAR_count_2 0x0200 /* the second in data_low */
#define CHAR_count_3 0x0300 /* the third in data_high */
#define CMD_spc_mode 0x9000 /* change spc mode */
#define CMD_spc_to_text 0x0100 /* set to text mode */
#define CMD_spc_to_digit 0x0200 /* set to digital mode */
#define CMD_spc_rate 0x0400 /* change spc data rate */
#define CMD_error 0xf000 /* severe error */
enum { PRIMARY_DIC = 0, USER_DIC, COMMAND_DIC, ABBREV_DIC };
#define DMA_single_in 0x01
#define DMA_single_out 0x02
#define DMA_buff_in 0x03
#define DMA_buff_out 0x04
#define DMA_control 0x05
#define DT_MEM_ALLOC 0x03
#define DT_SET_DIC 0x04
#define DT_START_TASK 0x05
#define DT_LOAD_MEM 0x06
#define DT_READ_MEM 0x07
#define DT_DIGITAL_IN 0x08
#define DMA_sync 0x06
#define DMA_sync_char 0x07
#define DRV_VERSION "2.12"
#define PROCSPEECH 0x0b
#define SYNTH_IO_EXTENT 8
static int synth_probe(struct spk_synth *synth);
static void dtpc_release(struct spk_synth *synth);
static const char *synth_immediate(struct spk_synth *synth, const char *buf);
static void do_catch_up(struct spk_synth *synth);
static void synth_flush(struct spk_synth *synth);
static int synth_portlist[] = { 0x340, 0x350, 0x240, 0x250, 0 };
static int in_escape, is_flushing;
static int dt_stat, dma_state;
enum default_vars_id {
CAPS_START_ID = 0, CAPS_STOP_ID,
RATE_ID, PITCH_ID, INFLECTION_ID,
VOL_ID, PUNCT_ID, VOICE_ID,
DIRECT_ID, V_LAST_VAR_ID,
NB_ID,
};
static struct var_t vars[NB_ID] = {
[CAPS_START_ID] = { CAPS_START, .u.s = {"[:dv ap 200]" } },
[CAPS_STOP_ID] = { CAPS_STOP, .u.s = {"[:dv ap 100]" } },
[RATE_ID] = { RATE, .u.n = {"[:ra %d]", 9, 0, 18, 150, 25, NULL } },
[PITCH_ID] = { PITCH, .u.n = {"[:dv ap %d]", 80, 0, 100, 20, 0, NULL } },
[INFLECTION_ID] = { INFLECTION, .u.n = {"[:dv pr %d] ", 100, 0, 10000, 0, 0, NULL } },
[VOL_ID] = { VOL, .u.n = {"[:vo se %d]", 5, 0, 9, 5, 10, NULL } },
[PUNCT_ID] = { PUNCT, .u.n = {"[:pu %c]", 0, 0, 2, 0, 0, "nsa" } },
[VOICE_ID] = { VOICE, .u.n = {"[:n%c]", 0, 0, 9, 0, 0, "phfdburwkv" } },
[DIRECT_ID] = { DIRECT, .u.n = {NULL, 0, 0, 1, 0, 0, NULL } },
V_LAST_VAR
};
/*
* These attributes will appear in /sys/accessibility/speakup/decpc.
*/
static struct kobj_attribute caps_start_attribute =
__ATTR(caps_start, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute caps_stop_attribute =
__ATTR(caps_stop, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute pitch_attribute =
__ATTR(pitch, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute inflection_attribute =
__ATTR(inflection, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute punct_attribute =
__ATTR(punct, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute rate_attribute =
__ATTR(rate, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute voice_attribute =
__ATTR(voice, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute vol_attribute =
__ATTR(vol, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute delay_time_attribute =
__ATTR(delay_time, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute direct_attribute =
__ATTR(direct, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute full_time_attribute =
__ATTR(full_time, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute jiffy_delta_attribute =
__ATTR(jiffy_delta, 0644, spk_var_show, spk_var_store);
static struct kobj_attribute trigger_time_attribute =
__ATTR(trigger_time, 0644, spk_var_show, spk_var_store);
/*
* Create a group of attributes so that we can create and destroy them all
* at once.
*/
static struct attribute *synth_attrs[] = {
&caps_start_attribute.attr,
&caps_stop_attribute.attr,
&pitch_attribute.attr,
&inflection_attribute.attr,
&punct_attribute.attr,
&rate_attribute.attr,
&voice_attribute.attr,
&vol_attribute.attr,
&delay_time_attribute.attr,
&direct_attribute.attr,
&full_time_attribute.attr,
&jiffy_delta_attribute.attr,
&trigger_time_attribute.attr,
NULL, /* need to NULL terminate the list of attributes */
};
static struct spk_synth synth_dec_pc = {
.name = "decpc",
.version = DRV_VERSION,
.long_name = "Dectalk PC",
.init = "[:pe -380]",
.procspeech = PROCSPEECH,
.delay = 500,
.trigger = 50,
.jiffies = 50,
.full = 1000,
.flags = SF_DEC,
.startup = SYNTH_START,
.checkval = SYNTH_CHECK,
.vars = vars,
.io_ops = &spk_serial_io_ops,
.probe = synth_probe,
.release = dtpc_release,
.synth_immediate = synth_immediate,
.catch_up = do_catch_up,
.flush = synth_flush,
.is_alive = spk_synth_is_alive_nop,
.synth_adjust = NULL,
.read_buff_add = NULL,
.get_index = NULL,
.indexing = {
.command = NULL,
.lowindex = 0,
.highindex = 0,
.currindex = 0,
},
.attributes = {
.attrs = synth_attrs,
.name = "decpc",
},
};
static int dt_getstatus(void)
{
dt_stat = inb_p(speakup_info.port_tts) |
(inb_p(speakup_info.port_tts + 1) << 8);
return dt_stat;
}
static void dt_sendcmd(u_int cmd)
{
outb_p(cmd & 0xFF, speakup_info.port_tts);
outb_p((cmd >> 8) & 0xFF, speakup_info.port_tts + 1);
}
static int dt_waitbit(int bit)
{
int timeout = 100;
while (--timeout > 0) {
if ((dt_getstatus() & bit) == bit)
return 1;
udelay(50);
}
return 0;
}
static int dt_wait_dma(void)
{
int timeout = 100, state = dma_state;
if (!dt_waitbit(STAT_dma_ready))
return 0;
while (--timeout > 0) {
if ((dt_getstatus() & STAT_dma_state) == state)
return 1;
udelay(50);
}
dma_state = dt_getstatus() & STAT_dma_state;
return 1;
}
static int dt_ctrl(u_int cmd)
{
int timeout = 10;
if (!dt_waitbit(STAT_cmd_ready))
return -1;
outb_p(0, speakup_info.port_tts + 2);
outb_p(0, speakup_info.port_tts + 3);
dt_getstatus();
dt_sendcmd(CMD_control | cmd);
outb_p(0, speakup_info.port_tts + 6);
while (dt_getstatus() & STAT_cmd_ready) {
udelay(20);
if (--timeout == 0)
break;
}
dt_sendcmd(CMD_null);
return 0;
}
static void synth_flush(struct spk_synth *synth)
{
int timeout = 10;
if (is_flushing)
return;
is_flushing = 4;
in_escape = 0;
while (dt_ctrl(CTRL_flush)) {
if (--timeout == 0)
break;
udelay(50);
}
for (timeout = 0; timeout < 10; timeout++) {
if (dt_waitbit(STAT_dma_ready))
break;
udelay(50);
}
outb_p(DMA_sync, speakup_info.port_tts + 4);
outb_p(0, speakup_info.port_tts + 4);
udelay(100);
for (timeout = 0; timeout < 10; timeout++) {
if (!(dt_getstatus() & STAT_flushing))
break;
udelay(50);
}
dma_state = dt_getstatus() & STAT_dma_state;
dma_state ^= STAT_dma_state;
is_flushing = 0;
}
static int dt_sendchar(char ch)
{
if (!dt_wait_dma())
return -1;
if (!(dt_stat & STAT_rr_char))
return -2;
outb_p(DMA_single_in, speakup_info.port_tts + 4);
outb_p(ch, speakup_info.port_tts + 4);
dma_state ^= STAT_dma_state;
return 0;
}
static int testkernel(void)
{
int status = 0;
if (dt_getstatus() == 0xffff) {
status = -1;
goto oops;
}
dt_sendcmd(CMD_sync);
if (!dt_waitbit(STAT_cmd_ready))
status = -2;
else if (dt_stat & 0x8000)
return 0;
else if (dt_stat == 0x0dec)
pr_warn("dec_pc at 0x%x, software not loaded\n",
speakup_info.port_tts);
status = -3;
oops: synth_release_region(speakup_info.port_tts, SYNTH_IO_EXTENT);
speakup_info.port_tts = 0;
return status;
}
static void do_catch_up(struct spk_synth *synth)
{
u_char ch;
static u_char last;
unsigned long flags;
unsigned long jiff_max;
struct var_t *jiffy_delta;
struct var_t *delay_time;
int jiffy_delta_val;
int delay_time_val;
jiffy_delta = spk_get_var(JIFFY);
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;
}
synth_buffer_skip_nonlatin1();
if (synth_buffer_empty()) {
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
break;
}
ch = synth_buffer_peek();
set_current_state(TASK_INTERRUPTIBLE);
delay_time_val = delay_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (ch == '\n')
ch = 0x0D;
if (dt_sendchar(ch)) {
schedule_timeout(msecs_to_jiffies(delay_time_val));
continue;
}
set_current_state(TASK_RUNNING);
spin_lock_irqsave(&speakup_info.spinlock, flags);
synth_buffer_getc();
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
if (ch == '[') {
in_escape = 1;
} else if (ch == ']') {
in_escape = 0;
} else if (ch <= SPACE) {
if (!in_escape && strchr(",.!?;:", last))
dt_sendchar(PROCSPEECH);
if (time_after_eq(jiffies, jiff_max)) {
if (!in_escape)
dt_sendchar(PROCSPEECH);
spin_lock_irqsave(&speakup_info.spinlock,
flags);
jiffy_delta_val = jiffy_delta->u.n.value;
delay_time_val = delay_time->u.n.value;
spin_unlock_irqrestore(&speakup_info.spinlock,
flags);
schedule_timeout(msecs_to_jiffies
(delay_time_val));
jiff_max = jiffies + jiffy_delta_val;
}
}
last = ch;
ch = 0;
}
if (!in_escape)
dt_sendchar(PROCSPEECH);
}
static const char *synth_immediate(struct spk_synth *synth, const char *buf)
{
u_char ch;
while ((ch = *buf)) {
if (ch == '\n')
ch = PROCSPEECH;
if (dt_sendchar(ch))
return buf;
buf++;
}
return NULL;
}
static int synth_probe(struct spk_synth *synth)
{
int i = 0, failed = 0;
pr_info("Probing for %s.\n", synth->long_name);
for (i = 0; synth_portlist[i]; i++) {
if (synth_request_region(synth_portlist[i], SYNTH_IO_EXTENT)) {
pr_warn("request_region: failed with 0x%x, %d\n",
synth_portlist[i], SYNTH_IO_EXTENT);
continue;
}
speakup_info.port_tts = synth_portlist[i];
failed = testkernel();
if (failed == 0)
break;
}
if (failed) {
pr_info("%s: not found\n", synth->long_name);
return -ENODEV;
}
pr_info("%s: %03x-%03x, Driver Version %s,\n", synth->long_name,
speakup_info.port_tts, speakup_info.port_tts + 7,
synth->version);
synth->alive = 1;
return 0;
}
static void dtpc_release(struct spk_synth *synth)
{
spk_stop_serial_interrupt();
if (speakup_info.port_tts)
synth_release_region(speakup_info.port_tts, SYNTH_IO_EXTENT);
speakup_info.port_tts = 0;
}
module_param_named(start, synth_dec_pc.startup, short, 0444);
module_param_named(rate, vars[RATE_ID].u.n.default_val, int, 0444);
module_param_named(pitch, vars[PITCH_ID].u.n.default_val, int, 0444);
module_param_named(inflection, vars[INFLECTION_ID].u.n.default_val, int, 0444);
module_param_named(vol, vars[VOL_ID].u.n.default_val, int, 0444);
module_param_named(punct, vars[PUNCT_ID].u.n.default_val, int, 0444);
module_param_named(voice, vars[VOICE_ID].u.n.default_val, int, 0444);
module_param_named(direct, vars[DIRECT_ID].u.n.default_val, int, 0444);
MODULE_PARM_DESC(start, "Start the synthesizer once it is loaded.");
MODULE_PARM_DESC(rate, "Set the rate variable on load.");
MODULE_PARM_DESC(pitch, "Set the pitch variable on load.");
MODULE_PARM_DESC(inflection, "Set the inflection variable on load.");
MODULE_PARM_DESC(vol, "Set the vol variable on load.");
MODULE_PARM_DESC(punct, "Set the punct variable on load.");
MODULE_PARM_DESC(voice, "Set the voice variable on load.");
MODULE_PARM_DESC(direct, "Set the direct variable on load.");
module_spk_synth(synth_dec_pc);
MODULE_AUTHOR("Kirk Reiser <kirk@braille.uwo.ca>");
MODULE_AUTHOR("David Borowski");
MODULE_DESCRIPTION("Speakup support for DECtalk PC synthesizers");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
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