diff options
Diffstat (limited to 'drivers/accessibility/speakup/speakup_decpc.c')
| -rw-r--r-- | drivers/accessibility/speakup/speakup_decpc.c | 495 |
1 files changed, 495 insertions, 0 deletions
diff --git a/drivers/accessibility/speakup/speakup_decpc.c b/drivers/accessibility/speakup/speakup_decpc.c new file mode 100644 index 000000000000..96f24c848cc5 --- /dev/null +++ b/drivers/accessibility/speakup/speakup_decpc.c @@ -0,0 +1,495 @@ +// 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(void); +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; + +static struct var_t vars[] = { + { CAPS_START, .u.s = {"[:dv ap 200]" } }, + { CAPS_STOP, .u.s = {"[:dv ap 100]" } }, + { RATE, .u.n = {"[:ra %d]", 9, 0, 18, 150, 25, NULL } }, + { PITCH, .u.n = {"[:dv ap %d]", 80, 0, 100, 20, 0, NULL } }, + { INFLECTION, .u.n = {"[:dv pr %d] ", 100, 0, 10000, 0, 0, NULL } }, + { VOL, .u.n = {"[:vo se %d]", 5, 0, 9, 5, 10, NULL } }, + { PUNCT, .u.n = {"[:pu %c]", 0, 0, 2, 0, 0, "nsa" } }, + { VOICE, .u.n = {"[:n%c]", 0, 0, 9, 0, 0, "phfdburwkv" } }, + { 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(void) +{ + 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_PARM_DESC(start, "Start the synthesizer once it is loaded."); + +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); |