static int atari_startup_irq(unsigned int irq)
{
m68k_irq_startup(irq);
atari_turnon_irq(irq);
atari_enable_irq(irq);
return 0;
}
static unsigned int atari_irq_startup(struct irq_data *data)
{
unsigned int irq = data->irq;
m68k_irq_startup(data);
atari_turnon_irq(irq);
atari_enable_irq(irq);
return 0;
}
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 );
}
__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_add_isr(unsigned long source, isrfunc isr, int type, void
*data, char *name)
{
int vector;
source &= ~IRQ_MACHSPEC;
if (type < IRQ_TYPE_SLOW || type > IRQ_TYPE_PRIO) {
printk ("atari_add_isr: Bad irq type %d requested from %s\n",
type, name );
return( 0 );
}
if (!IS_VALID_INTNO(source)) {
printk ("atari_add_isr: Unknown irq %ld requested from %s\n",
source, name );
return( 0 );
}
vector = IRQ_SOURCE_TO_VECTOR(source);
/*
* Check type/source combination: slow ints are (currently)
* only possible for MFP-interrupts.
*/
if (type == IRQ_TYPE_SLOW &&
(source < STMFP_SOURCE_BASE || source >= SCC_SOURCE_BASE)) {
printk ("atari_add_isr: Slow irq requested for non-MFP source %ld from %s\n",
source, name );
return( 0 );
}
if (vectors[vector] == bad_interrupt) {
/* int has no handler yet */
irq_handler[source].isr = isr;
irq_handler[source].data = data;
irq_param[source].type = type;
irq_param[source].name = name;
vectors[vector] =
(type == IRQ_TYPE_SLOW) ? slow_handlers[source-STMFP_SOURCE_BASE] :
(type == IRQ_TYPE_FAST) ? atari_fast_irq_handler :
atari_prio_irq_handler;
/* If MFP int, also enable and umask it */
atari_turnon_irq(source);
atari_enable_irq(source);
return 1;
}
else if (irq_param[source].type == type) {
/* old handler is of same type -> handlers can be chained */
isr_node_t *p;
unsigned long flags;
save_flags(flags);
cli();
if (irq_handler[source].isr != atari_call_isr_list) {
/* Only one handler yet, make a node for this first one */
p = new_isr_node();
if (p == NULL) return 0;
p->isr = irq_handler[source].isr;
p->data = irq_handler[source].data;
p->name = irq_param[source].name;
p->next = NULL;
irq_handler[source].isr = atari_call_isr_list;
irq_handler[source].data = p;
irq_param[source].name = "chained";
}
p = new_isr_node();
if (p == NULL) return 0;
p->isr = isr;
p->data = data;
p->name = name;
/* new handlers are put in front of the queue */
p->next = irq_handler[source].data;
irq_handler[source].data = p;
restore_flags(flags);
return 1;
}
else {
printk ("atari_add_isr: Irq %ld allocated by other type int (call from %s)\n",
source, name );
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;
}
int atari_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
int vector;
unsigned long oflags = flags;
/*
* The following is a hack to make some PCI card drivers work,
* which set the SA_SHIRQ flag.
*/
flags &= ~SA_SHIRQ;
if (flags == SA_INTERRUPT) {
printk ("%s: SA_INTERRUPT changed to IRQ_TYPE_SLOW for %s\n",
__FUNCTION__, devname);
flags = IRQ_TYPE_SLOW;
}
if (flags < IRQ_TYPE_SLOW || flags > IRQ_TYPE_PRIO) {
printk ("%s: Bad irq type 0x%lx <0x%lx> requested from %s\n",
__FUNCTION__, flags, oflags, devname);
return -EINVAL;
}
if (!IS_VALID_INTNO(irq)) {
printk ("%s: Unknown irq %d requested from %s\n",
__FUNCTION__, irq, devname);
return -ENXIO;
}
vector = IRQ_SOURCE_TO_VECTOR(irq);
/*
* Check type/source combination: slow ints are (currently)
* only possible for MFP-interrupts.
*/
if (flags == IRQ_TYPE_SLOW &&
(irq < STMFP_SOURCE_BASE || irq >= SCC_SOURCE_BASE)) {
printk ("%s: Slow irq requested for non-MFP source %d from %s\n",
__FUNCTION__, irq, devname);
return -EINVAL;
}
if (vectors[vector] == bad_interrupt) {
/* int has no handler yet */
irq_handler[irq].handler = handler;
irq_handler[irq].dev_id = dev_id;
irq_param[irq].flags = flags;
irq_param[irq].devname = devname;
vectors[vector] =
(flags == IRQ_TYPE_SLOW) ? slow_handlers[irq-STMFP_SOURCE_BASE] :
(flags == IRQ_TYPE_FAST) ? atari_fast_irq_handler :
atari_prio_irq_handler;
/* If MFP int, also enable and umask it */
atari_turnon_irq(irq);
atari_enable_irq(irq);
return 0;
}
else if (irq_param[irq].flags == flags) {
/* old handler is of same type -> handlers can be chained */
irq_node_t *node;
unsigned long flags;
save_flags(flags);
cli();
if (irq_handler[irq].handler != atari_call_irq_list) {
/* Only one handler yet, make a node for this first one */
if (!(node = new_irq_node()))
return -ENOMEM;
node->handler = irq_handler[irq].handler;
node->dev_id = irq_handler[irq].dev_id;
node->devname = irq_param[irq].devname;
node->next = NULL;
irq_handler[irq].handler = atari_call_irq_list;
irq_handler[irq].dev_id = node;
irq_param[irq].devname = "chained";
}
if (!(node = new_irq_node()))
return -ENOMEM;
node->handler = handler;
node->dev_id = dev_id;
node->devname = devname;
/* new handlers are put in front of the queue */
node->next = irq_handler[irq].dev_id;
irq_handler[irq].dev_id = node;
restore_flags(flags);
return 0;
} else {
printk ("%s: Irq %d allocated by other type int (call from %s)\n",
__FUNCTION__, irq, devname);
return -EBUSY;
}
}
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;
}
