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Add PowerPC 405 input pins (IRQ, resets, ...) model.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2654 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-04-12 21:24:29 +00:00
parent 2e719ba347
commit 24be5ae3a0
5 changed files with 133 additions and 24 deletions
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102
hw/ppc.c
View file

@ -56,23 +56,23 @@ static void ppc6xx_set_irq (void *opaque, int pin, int level)
#endif
cur_level = (env->irq_input_state >> pin) & 1;
/* Don't generate spurious events */
if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0) || 0) {
if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
switch (pin) {
case PPC_INPUT_INT:
/* Level sensitive - asserted high */
case PPC6xx_INPUT_INT:
/* Level sensitive - active high */
#if defined(PPC_DEBUG_IRQ)
printf("%s: set the external IRQ state to %d\n", __func__, level);
#endif
ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
break;
case PPC_INPUT_SMI:
case PPC6xx_INPUT_SMI:
/* Level sensitive - active high */
#if defined(PPC_DEBUG_IRQ)
printf("%s: set the SMI IRQ state to %d\n", __func__, level);
#endif
ppc_set_irq(env, PPC_INTERRUPT_SMI, level);
break;
case PPC_INPUT_MCP:
case PPC6xx_INPUT_MCP:
/* Negative edge sensitive */
/* XXX: TODO: actual reaction may depends on HID0 status
* 603/604/740/750: check HID0[EMCP]
@ -84,7 +84,7 @@ static void ppc6xx_set_irq (void *opaque, int pin, int level)
ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
}
break;
case PPC_INPUT_CKSTP_IN:
case PPC6xx_INPUT_CKSTP_IN:
/* Level sensitive - active low */
/* XXX: TODO: relay the signal to CKSTP_OUT pin */
if (level) {
@ -99,7 +99,7 @@ static void ppc6xx_set_irq (void *opaque, int pin, int level)
env->halted = 0;
}
break;
case PPC_INPUT_HRESET:
case PPC6xx_INPUT_HRESET:
/* Level sensitive - active low */
if (level) {
#if 0 // XXX: TOFIX
@ -110,7 +110,7 @@ static void ppc6xx_set_irq (void *opaque, int pin, int level)
#endif
}
break;
case PPC_INPUT_SRESET:
case PPC6xx_INPUT_SRESET:
#if defined(PPC_DEBUG_IRQ)
printf("%s: set the RESET IRQ state to %d\n", __func__, level);
#endif
@ -135,6 +135,92 @@ void ppc6xx_irq_init (CPUState *env)
env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, env, 6);
}
/* PowerPC 405 internal IRQ controller */
static void ppc405_set_irq (void *opaque, int pin, int level)
{
CPUState *env = opaque;
int cur_level;
#if defined(PPC_DEBUG_IRQ)
printf("%s: env %p pin %d level %d\n", __func__, env, pin, level);
#endif
cur_level = (env->irq_input_state >> pin) & 1;
/* Don't generate spurious events */
if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
switch (pin) {
case PPC405_INPUT_RESET_SYS:
/* XXX: TODO: reset all peripherals */
/* No break here */
case PPC405_INPUT_RESET_CHIP:
/* XXX: TODO: reset on-chip peripherals */
/* No break here */
case PPC405_INPUT_RESET_CORE:
/* XXX: TODO: update DBSR[MRR] */
if (level) {
#if 0 // XXX: TOFIX
#if defined(PPC_DEBUG_IRQ)
printf("%s: reset the CPU\n", __func__);
#endif
cpu_reset(env);
#endif
}
break;
case PPC405_INPUT_CINT:
/* Level sensitive - active high */
#if defined(PPC_DEBUG_IRQ)
printf("%s: set the critical IRQ state to %d\n", __func__, level);
#endif
/* XXX: TOFIX */
ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
break;
case PPC405_INPUT_INT:
/* Level sensitive - active high */
#if defined(PPC_DEBUG_IRQ)
printf("%s: set the external IRQ state to %d\n", __func__, level);
#endif
ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
break;
case PPC405_INPUT_HALT:
/* Level sensitive - active low */
if (level) {
#if defined(PPC_DEBUG_IRQ)
printf("%s: stop the CPU\n", __func__);
#endif
env->halted = 1;
} else {
#if defined(PPC_DEBUG_IRQ)
printf("%s: restart the CPU\n", __func__);
#endif
env->halted = 0;
}
break;
case PPC405_INPUT_DEBUG:
/* Level sensitive - active high */
#if defined(PPC_DEBUG_IRQ)
printf("%s: set the external IRQ state to %d\n", __func__, level);
#endif
ppc_set_irq(env, EXCP_40x_DEBUG, level);
break;
default:
/* Unknown pin - do nothing */
#if defined(PPC_DEBUG_IRQ)
printf("%s: unknown IRQ pin %d\n", __func__, pin);
#endif
return;
}
if (level)
env->irq_input_state |= 1 << pin;
else
env->irq_input_state &= ~(1 << pin);
}
}
void ppc405_irq_init (CPUState *env)
{
printf("%s\n", __func__);
env->irq_inputs = (void **)qemu_allocate_irqs(&ppc405_set_irq, env, 7);
}
/*****************************************************************************/
/* PowerPC time base and decrementer emulation */
//#define DEBUG_TB