Add PowerPC 405 input pins (IRQ, resets, ...) model.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2654 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/hw/ppc.c b/hw/ppc.c
index f502271..8438bc6 100644
--- a/hw/ppc.c
+++ b/hw/ppc.c
@@ -56,23 +56,23 @@
#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 @@
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 @@
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 @@
#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 @@
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
