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IER behavior change - better IRQ handling

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1453 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-06-05 15:24:23 +00:00
parent e68b9b2b10
commit cadae95f33
1 changed files with 15 additions and 7 deletions
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22
hw/cuda.c
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@ -120,8 +120,9 @@ typedef struct CUDAState {
int data_in_index;
int data_out_index;
SetIRQFunc *set_irq;
int irq;
openpic_t *openpic;
void *irq_opaque;
uint8_t autopoll;
uint8_t data_in[128];
uint8_t data_out[16];
@ -140,9 +141,9 @@ static void cuda_timer_update(CUDAState *s, CUDATimer *ti,
static void cuda_update_irq(CUDAState *s)
{
if (s->ifr & s->ier & (SR_INT | T1_INT)) {
openpic_set_irq(s->openpic, s->irq, 1);
s->set_irq(s->irq_opaque, s->irq, 1);
} else {
openpic_set_irq(s->openpic, s->irq, 0);
s->set_irq(s->irq_opaque, s->irq, 0);
}
}
@ -356,6 +357,7 @@ static void cuda_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
cuda_update_irq(s);
break;
case 14:
#if 0
if (val & IER_SET) {
/* set bits */
s->ier |= val & 0x7f;
@ -363,6 +365,10 @@ static void cuda_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
/* reset bits */
s->ier &= ~val;
}
#else
/* XXX: please explain me why the SPEC is not correct ! */
s->ier = val;
#endif
cuda_update_irq(s);
break;
default:
@ -545,7 +551,7 @@ static void cuda_receive_packet_from_host(CUDAState *s,
#ifdef DEBUG_CUDA_PACKET
{
int i;
printf("cuda_receive_packet_to_host:\n");
printf("cuda_receive_packet_from_host:\n");
for(i = 0; i < len; i++)
printf(" %02x", data[i]);
printf("\n");
@ -605,19 +611,21 @@ static CPUReadMemoryFunc *cuda_read[] = {
&cuda_readl,
};
int cuda_init(openpic_t *openpic, int irq)
int cuda_init(SetIRQFunc *set_irq, void *irq_opaque, int irq)
{
CUDAState *s = &cuda_state;
int cuda_mem_index;
s->openpic = openpic;
s->set_irq = set_irq;
s->irq_opaque = irq_opaque;
s->irq = irq;
s->timers[0].timer = qemu_new_timer(vm_clock, cuda_timer1, s);
s->timers[0].latch = 0x10000;
set_counter(s, &s->timers[0], 0xffff);
s->timers[1].latch = 0x10000;
s->ier = T1_INT | SR_INT;
// s->ier = T1_INT | SR_INT;
s->ier = 0;
set_counter(s, &s->timers[1], 0xffff);
s->adb_poll_timer = qemu_new_timer(vm_clock, cuda_adb_poll, s);