static void atari_shutdown_irq(unsigned int irq)
{
atari_disable_irq(irq);
atari_turnoff_irq(irq);
m68k_irq_shutdown(irq);
if (irq == IRQ_AUTO_4)
vectors[VEC_INT4] = falcon_hblhandler;
}
static void atari_irq_shutdown(struct irq_data *data)
{
unsigned int irq = data->irq;
atari_disable_irq(irq);
atari_turnoff_irq(irq);
m68k_irq_shutdown(data);
if (irq == IRQ_AUTO_4)
vectors[VEC_INT4] = falcon_hblhandler;
}
int atari_scsi_bus_reset(Scsi_Cmnd *cmd)
{
int rv;
struct NCR5380_hostdata *hostdata =
(struct NCR5380_hostdata *)cmd->device->host->hostdata;
/* For doing the reset, SCSI interrupts must be disabled first,
* since the 5380 raises its IRQ line while _RST is active and we
* can't disable interrupts completely, since we need the timer.
*/
/* And abort a maybe active DMA transfer */
if (IS_A_TT()) {
atari_turnoff_irq( IRQ_TT_MFP_SCSI );
#ifdef REAL_DMA
tt_scsi_dma.dma_ctrl = 0;
#endif /* REAL_DMA */
}
else {
atari_turnoff_irq( IRQ_MFP_FSCSI );
#ifdef REAL_DMA
st_dma.dma_mode_status = 0x90;
atari_dma_active = 0;
atari_dma_orig_addr = NULL;
#endif /* REAL_DMA */
}
rv = NCR5380_bus_reset(cmd);
/* Re-enable ints */
if (IS_A_TT()) {
atari_turnon_irq( IRQ_TT_MFP_SCSI );
}
else {
atari_turnon_irq( IRQ_MFP_FSCSI );
}
if ((rv & SCSI_RESET_ACTION) == SCSI_RESET_SUCCESS)
falcon_release_lock_if_possible(hostdata);
return( rv );
}
static int __init atari_debug_setup(char *arg)
{
if (!MACH_IS_ATARI)
return 0;
if (!strcmp(arg, "ser"))
/* defaults to ser2 for a Falcon and ser1 otherwise */
arg = MACH_IS_FALCON ? "ser2" : "ser1";
if (!strcmp(arg, "ser1")) {
/* ST-MFP Modem1 serial port */
atari_init_mfp_port(B9600|CS8);
atari_console_driver.write = atari_mfp_console_write;
} else if (!strcmp(arg, "ser2")) {
/* SCC Modem2 serial port */
atari_init_scc_port(B9600|CS8);
atari_console_driver.write = atari_scc_console_write;
} else if (!strcmp(arg, "midi")) {
/* MIDI port */
atari_init_midi_port(B9600|CS8);
atari_console_driver.write = atari_midi_console_write;
} else if (!strcmp(arg, "par")) {
/* parallel printer */
atari_turnoff_irq(IRQ_MFP_BUSY); /* avoid ints */
sound_ym.rd_data_reg_sel = 7; /* select mixer control */
sound_ym.wd_data = 0xff; /* sound off, ports are output */
sound_ym.rd_data_reg_sel = 15; /* select port B */
sound_ym.wd_data = 0; /* no char */
sound_ym.rd_data_reg_sel = 14; /* select port A */
sound_ym.wd_data = sound_ym.rd_data_reg_sel | 0x20; /* strobe H */
atari_console_driver.write = atari_par_console_write;
}
if (atari_console_driver.write)
register_console(&atari_console_driver);
return 0;
}
__initfunc(int atari_keyb_init(void))
{
/* setup key map */
memcpy(key_maps[0], ataplain_map, sizeof(plain_map));
memcpy(key_maps[1], atashift_map, sizeof(plain_map));
memcpy(key_maps[4], atactrl_map, sizeof(plain_map));
memcpy(key_maps[5], atashift_ctrl_map, sizeof(plain_map));
memcpy(key_maps[8], ataalt_map, sizeof(plain_map));
/* Atari doesn't have an altgr_map, so we can reuse its memory for
atashift_alt_map */
memcpy(key_maps[2], atashift_alt_map, sizeof(plain_map));
key_maps[9] = key_maps[2];
key_maps[2] = 0; /* ataaltgr_map */
memcpy(key_maps[12], atactrl_alt_map, sizeof(plain_map));
key_maps[13] = atashift_ctrl_alt_map;
keymap_count = 8;
/* say that we don't have an AltGr key */
keyboard_type = KB_84;
kb_state.state = KEYBOARD;
kb_state.len = 0;
request_irq(IRQ_MFP_ACIA, keyboard_interrupt, IRQ_TYPE_SLOW,
"keyboard/mouse/MIDI", keyboard_interrupt);
atari_turnoff_irq(IRQ_MFP_ACIA);
do {
/* reset IKBD ACIA */
acia.key_ctrl = ACIA_RESET |
(atari_switches & ATARI_SWITCH_IKBD) ? ACIA_RHTID : 0;
(void)acia.key_ctrl;
(void)acia.key_data;
/* reset MIDI ACIA */
acia.mid_ctrl = ACIA_RESET |
(atari_switches & ATARI_SWITCH_MIDI) ? ACIA_RHTID : 0;
(void)acia.mid_ctrl;
(void)acia.mid_data;
/* divide 500kHz by 64 gives 7812.5 baud */
/* 8 data no parity 1 start 1 stop bit */
/* receive interrupt enabled */
/* RTS low (except if switch selected), transmit interrupt disabled */
acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RIE) |
((atari_switches & ATARI_SWITCH_IKBD) ?
ACIA_RHTID : ACIA_RLTID);
acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S |
(atari_switches & ATARI_SWITCH_MIDI) ? ACIA_RHTID : 0;
}
/* make sure the interrupt line is up */
while ((mfp.par_dt_reg & 0x10) == 0);
/* enable ACIA Interrupts */
mfp.active_edge &= ~0x10;
atari_turnon_irq(IRQ_MFP_ACIA);
ikbd_self_test = 1;
ikbd_reset();
/* wait for a period of inactivity (here: 0.25s), then assume the IKBD's
* self-test is finished */
self_test_last_rcv = jiffies;
while (time_before(jiffies, self_test_last_rcv + HZ/4))
barrier();
/* if not incremented: no 0xf1 received */
if (ikbd_self_test == 1)
printk( KERN_ERR "WARNING: keyboard self test failed!\n" );
ikbd_self_test = 0;
ikbd_mouse_disable();
ikbd_joystick_disable();
atari_joystick_init();
return 0;
}
int atari_remove_isr(unsigned long source, isrfunc isr, void *data)
{
unsigned long flags;
int vector;
isr_node_t **p, *q;
source &= ~IRQ_MACHSPEC;
if (!IS_VALID_INTNO(source)) {
printk("atari_remove_isr: Unknown irq %ld\n", source);
return 0;
}
vector = IRQ_SOURCE_TO_VECTOR(source);
if (vectors[vector] == bad_interrupt)
goto not_found;
save_flags(flags);
cli();
if (irq_handler[source].isr != atari_call_isr_list) {
/* It's the only handler for the interrupt */
if (irq_handler[source].isr != isr &&
irq_handler[source].data != data) {
restore_flags(flags);
goto not_found;
}
irq_handler[source].isr = NULL;
irq_handler[source].data = NULL;
irq_param[source].name = NULL;
vectors[vector] = bad_interrupt;
/* If MFP int, also disable it */
atari_disable_irq(source);
atari_turnoff_irq(source);
restore_flags(flags);
return 1;
}
/* The interrupt is chained, find the isr on the list */
for( p = (isr_node_t **)&irq_handler[source].data; *p; p = &(*p)->next ) {
if ((*p)->isr == isr) break;
}
if (!*p) {
restore_flags(flags);
goto not_found;
}
(*p)->isr = NULL; /* Mark it as free for reallocation */
*p = (*p)->next;
/* If there's now only one handler, unchain the interrupt, i.e. plug in
* the handler directly again and omit atari_call_isr_list */
q = (isr_node_t *)irq_handler[source].data;
if (q && !q->next) {
irq_handler[source].isr = q->isr;
irq_handler[source].data = q->data;
irq_param[source].name = q->name;
q->isr = NULL; /* Mark it as free for reallocation */
}
restore_flags(flags);
return 1;
not_found:
printk("atari_remove_isr: isr %p not found on list!\n", isr);
return 0;
}
int atari_keyb_init(void)
{
int error;
if (atari_keyb_done)
return 0;
kb_state.state = KEYBOARD;
kb_state.len = 0;
error = request_irq(IRQ_MFP_ACIA, atari_keyboard_interrupt,
IRQ_TYPE_SLOW, "keyboard,mouse,MIDI",
atari_keyboard_interrupt);
if (error)
return error;
atari_turnoff_irq(IRQ_MFP_ACIA);
do {
/* reset IKBD ACIA */
acia.key_ctrl = ACIA_RESET |
((atari_switches & ATARI_SWITCH_IKBD) ?
ACIA_RHTID : 0);
(void)acia.key_ctrl;
(void)acia.key_data;
/* reset MIDI ACIA */
acia.mid_ctrl = ACIA_RESET |
((atari_switches & ATARI_SWITCH_MIDI) ?
ACIA_RHTID : 0);
(void)acia.mid_ctrl;
(void)acia.mid_data;
/* divide 500kHz by 64 gives 7812.5 baud */
/* 8 data no parity 1 start 1 stop bit */
/* receive interrupt enabled */
/* RTS low (except if switch selected), transmit interrupt disabled */
acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RIE) |
((atari_switches & ATARI_SWITCH_IKBD) ?
ACIA_RHTID : ACIA_RLTID);
acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S |
((atari_switches & ATARI_SWITCH_MIDI) ?
ACIA_RHTID : 0);
/* make sure the interrupt line is up */
} while ((st_mfp.par_dt_reg & 0x10) == 0);
/* enable ACIA Interrupts */
st_mfp.active_edge &= ~0x10;
atari_turnon_irq(IRQ_MFP_ACIA);
ikbd_self_test = 1;
ikbd_reset();
/* wait for a period of inactivity (here: 0.25s), then assume the IKBD's
* self-test is finished */
self_test_last_rcv = jiffies;
while (time_before(jiffies, self_test_last_rcv + HZ/4))
barrier();
/* if not incremented: no 0xf1 received */
if (ikbd_self_test == 1)
printk(KERN_ERR "WARNING: keyboard self test failed!\n");
ikbd_self_test = 0;
ikbd_mouse_disable();
ikbd_joystick_disable();
#ifdef FIXED_ATARI_JOYSTICK
atari_joystick_init();
#endif
// flag init done
atari_keyb_done = 1;
return 0;
}
void atari_free_irq(unsigned int irq, void *dev_id)
{
unsigned long flags;
int vector;
irq_node_t **list, *node;
if (!IS_VALID_INTNO(irq)) {
printk("%s: Unknown irq %d\n", __FUNCTION__, irq);
return;
}
vector = IRQ_SOURCE_TO_VECTOR(irq);
if (vectors[vector] == bad_interrupt)
goto not_found;
save_flags(flags);
cli();
if (irq_handler[irq].handler != atari_call_irq_list) {
/* It's the only handler for the interrupt */
if (irq_handler[irq].dev_id != dev_id) {
restore_flags(flags);
goto not_found;
}
irq_handler[irq].handler = NULL;
irq_handler[irq].dev_id = NULL;
irq_param[irq].devname = NULL;
vectors[vector] = bad_interrupt;
/* If MFP int, also disable it */
atari_disable_irq(irq);
atari_turnoff_irq(irq);
restore_flags(flags);
return;
}
/* The interrupt is chained, find the irq on the list */
for(list = (irq_node_t **)&irq_handler[irq].dev_id; *list; list = &(*list)->next) {
if ((*list)->dev_id == dev_id) break;
}
if (!*list) {
restore_flags(flags);
goto not_found;
}
(*list)->handler = NULL; /* Mark it as free for reallocation */
*list = (*list)->next;
/* If there's now only one handler, unchain the interrupt, i.e. plug in
* the handler directly again and omit atari_call_irq_list */
node = (irq_node_t *)irq_handler[irq].dev_id;
if (node && !node->next) {
irq_handler[irq].handler = node->handler;
irq_handler[irq].dev_id = node->dev_id;
irq_param[irq].devname = node->devname;
node->handler = NULL; /* Mark it as free for reallocation */
}
restore_flags(flags);
return;
not_found:
printk("%s: tried to remove invalid irq\n", __FUNCTION__);
return;
}
int atari_keyb_init(void)
{
int error;
if (atari_keyb_done)
return 0;
kb_state.state = KEYBOARD;
kb_state.len = 0;
error = request_irq(IRQ_MFP_ACIA, atari_keyboard_interrupt,
IRQ_TYPE_SLOW, "keyboard,mouse,MIDI",
atari_keyboard_interrupt);
if (error)
return error;
atari_turnoff_irq(IRQ_MFP_ACIA);
do {
acia.key_ctrl = ACIA_RESET |
((atari_switches & ATARI_SWITCH_IKBD) ?
ACIA_RHTID : 0);
(void)acia.key_ctrl;
(void)acia.key_data;
acia.mid_ctrl = ACIA_RESET |
((atari_switches & ATARI_SWITCH_MIDI) ?
ACIA_RHTID : 0);
(void)acia.mid_ctrl;
(void)acia.mid_data;
acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RIE) |
((atari_switches & ATARI_SWITCH_IKBD) ?
ACIA_RHTID : ACIA_RLTID);
acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S |
((atari_switches & ATARI_SWITCH_MIDI) ?
ACIA_RHTID : 0);
} while ((st_mfp.par_dt_reg & 0x10) == 0);
st_mfp.active_edge &= ~0x10;
atari_turnon_irq(IRQ_MFP_ACIA);
ikbd_self_test = 1;
ikbd_reset();
self_test_last_rcv = jiffies;
while (time_before(jiffies, self_test_last_rcv + HZ/4))
barrier();
if (ikbd_self_test == 1)
printk(KERN_ERR "WARNING: keyboard self test failed!\n");
ikbd_self_test = 0;
ikbd_mouse_disable();
ikbd_joystick_disable();
#ifdef FIXED_ATARI_JOYSTICK
atari_joystick_init();
#endif
atari_keyb_done = 1;
return 0;
}
