#include "sun4m.h"
#include "monitor.h"
#include "sysbus.h"
+#include "trace.h"
//#define DEBUG_IRQ_COUNT
-//#define DEBUG_IRQ
-
-#ifdef DEBUG_IRQ
-#define DPRINTF(fmt, ...) \
- do { printf("IRQ: " fmt , ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...)
-#endif
/*
* Registers of interrupt controller in sun4m.
struct SLAVIO_INTCTLState;
typedef struct SLAVIO_CPUINTCTLState {
- uint32_t intreg_pending;
struct SLAVIO_INTCTLState *master;
+ uint32_t intreg_pending;
uint32_t cpu;
+ uint32_t irl_out;
} SLAVIO_CPUINTCTLState;
typedef struct SLAVIO_INTCTLState {
SysBusDevice busdev;
- uint32_t intregm_pending;
- uint32_t intregm_disabled;
- uint32_t target_cpu;
#ifdef DEBUG_IRQ_COUNT
uint64_t irq_count[32];
#endif
qemu_irq cpu_irqs[MAX_CPUS][MAX_PILS];
- uint32_t cputimer_lbit, cputimer_mbit;
- uint32_t cputimer_bit;
- uint32_t pil_out[MAX_CPUS];
SLAVIO_CPUINTCTLState slaves[MAX_CPUS];
+ uint32_t intregm_pending;
+ uint32_t intregm_disabled;
+ uint32_t target_cpu;
} SLAVIO_INTCTLState;
#define INTCTL_MAXADDR 0xf
#define MASTER_IRQ_MASK ~0x0fa2007f
#define MASTER_DISABLE 0x80000000
#define CPU_SOFTIRQ_MASK 0xfffe0000
-#define CPU_IRQ_INT15_IN 0x0004000
-#define CPU_IRQ_INT15_MASK 0x80000000
+#define CPU_IRQ_INT15_IN (1 << 15)
+#define CPU_IRQ_TIMER_IN (1 << 14)
static void slavio_check_interrupts(SLAVIO_INTCTLState *s, int set_irqs);
ret = 0;
break;
}
- DPRINTF("read cpu %d reg 0x" TARGET_FMT_plx " = %x\n", s->cpu, addr, ret);
+ trace_slavio_intctl_mem_readl(s->cpu, addr, ret);
return ret;
}
uint32_t saddr;
saddr = addr >> 2;
- DPRINTF("write cpu %d reg 0x" TARGET_FMT_plx " = %x\n", s->cpu, addr, val);
+ trace_slavio_intctl_mem_writel(s->cpu, addr, val);
switch (saddr) {
case 1: // clear pending softints
- if (val & CPU_IRQ_INT15_IN)
- val |= CPU_IRQ_INT15_MASK;
- val &= CPU_SOFTIRQ_MASK;
+ val &= CPU_SOFTIRQ_MASK | CPU_IRQ_INT15_IN;
s->intreg_pending &= ~val;
slavio_check_interrupts(s->master, 1);
- DPRINTF("Cleared cpu %d irq mask %x, curmask %x\n", s->cpu, val,
- s->intreg_pending);
+ trace_slavio_intctl_mem_writel_clear(s->cpu, val, s->intreg_pending);
break;
case 2: // set softint
val &= CPU_SOFTIRQ_MASK;
s->intreg_pending |= val;
slavio_check_interrupts(s->master, 1);
- DPRINTF("Set cpu %d irq mask %x, curmask %x\n", s->cpu, val,
- s->intreg_pending);
+ trace_slavio_intctl_mem_writel_set(s->cpu, val, s->intreg_pending);
break;
default:
break;
}
}
-static CPUReadMemoryFunc *slavio_intctl_mem_read[3] = {
+static CPUReadMemoryFunc * const slavio_intctl_mem_read[3] = {
NULL,
NULL,
slavio_intctl_mem_readl,
};
-static CPUWriteMemoryFunc *slavio_intctl_mem_write[3] = {
+static CPUWriteMemoryFunc * const slavio_intctl_mem_write[3] = {
NULL,
NULL,
slavio_intctl_mem_writel,
ret = 0;
break;
}
- DPRINTF("read system reg 0x" TARGET_FMT_plx " = %x\n", addr, ret);
+ trace_slavio_intctlm_mem_readl(addr, ret);
return ret;
}
uint32_t saddr;
saddr = addr >> 2;
- DPRINTF("write system reg 0x" TARGET_FMT_plx " = %x\n", addr, val);
+ trace_slavio_intctlm_mem_writel(addr, val);
switch (saddr) {
case 2: // clear (enable)
// Force clear unused bits
val &= MASTER_IRQ_MASK;
s->intregm_disabled &= ~val;
- DPRINTF("Enabled master irq mask %x, curmask %x\n", val,
- s->intregm_disabled);
+ trace_slavio_intctlm_mem_writel_enable(val, s->intregm_disabled);
slavio_check_interrupts(s, 1);
break;
- case 3: // set (disable, clear pending)
+ case 3: // set (disable; doesn't affect pending)
// Force clear unused bits
val &= MASTER_IRQ_MASK;
s->intregm_disabled |= val;
- s->intregm_pending &= ~val;
slavio_check_interrupts(s, 1);
- DPRINTF("Disabled master irq mask %x, curmask %x\n", val,
- s->intregm_disabled);
+ trace_slavio_intctlm_mem_writel_disable(val, s->intregm_disabled);
break;
case 4:
s->target_cpu = val & (MAX_CPUS - 1);
slavio_check_interrupts(s, 1);
- DPRINTF("Set master irq cpu %d\n", s->target_cpu);
+ trace_slavio_intctlm_mem_writel_target(s->target_cpu);
break;
default:
break;
}
}
-static CPUReadMemoryFunc *slavio_intctlm_mem_read[3] = {
+static CPUReadMemoryFunc * const slavio_intctlm_mem_read[3] = {
NULL,
NULL,
slavio_intctlm_mem_readl,
};
-static CPUWriteMemoryFunc *slavio_intctlm_mem_write[3] = {
+static CPUWriteMemoryFunc * const slavio_intctlm_mem_write[3] = {
NULL,
NULL,
slavio_intctlm_mem_writel,
}
static const uint32_t intbit_to_level[] = {
- 2, 3, 5, 7, 9, 11, 0, 14, 3, 5, 7, 9, 11, 13, 12, 12,
- 6, 0, 4, 10, 8, 0, 11, 0, 0, 0, 0, 0, 15, 0, 15, 0,
+ 2, 3, 5, 7, 9, 11, 13, 2, 3, 5, 7, 9, 11, 13, 12, 12,
+ 6, 13, 4, 10, 8, 9, 11, 0, 0, 0, 0, 15, 15, 15, 15, 0,
};
static void slavio_check_interrupts(SLAVIO_INTCTLState *s, int set_irqs)
pending &= ~s->intregm_disabled;
- DPRINTF("pending %x disabled %x\n", pending, s->intregm_disabled);
+ trace_slavio_check_interrupts(pending, s->intregm_disabled);
for (i = 0; i < MAX_CPUS; i++) {
pil_pending = 0;
+
+ /* If we are the current interrupt target, get hard interrupts */
if (pending && !(s->intregm_disabled & MASTER_DISABLE) &&
(i == s->target_cpu)) {
for (j = 0; j < 32; j++) {
- if (pending & (1 << j))
+ if ((pending & (1 << j)) && intbit_to_level[j]) {
pil_pending |= 1 << intbit_to_level[j];
+ }
}
}
+
+ /* Calculate current pending hard interrupts for display */
+ s->slaves[i].intreg_pending &= CPU_SOFTIRQ_MASK | CPU_IRQ_INT15_IN |
+ CPU_IRQ_TIMER_IN;
+ if (i == s->target_cpu) {
+ for (j = 0; j < 32; j++) {
+ if ((s->intregm_pending & (1 << j)) && intbit_to_level[j]) {
+ s->slaves[i].intreg_pending |= 1 << intbit_to_level[j];
+ }
+ }
+ }
+
+ /* Level 15 and CPU timer interrupts are only masked when
+ the MASTER_DISABLE bit is set */
+ if (!(s->intregm_disabled & MASTER_DISABLE)) {
+ pil_pending |= s->slaves[i].intreg_pending &
+ (CPU_IRQ_INT15_IN | CPU_IRQ_TIMER_IN);
+ }
+
+ /* Add soft interrupts */
pil_pending |= (s->slaves[i].intreg_pending & CPU_SOFTIRQ_MASK) >> 16;
if (set_irqs) {
- for (j = 0; j < MAX_PILS; j++) {
+ /* Since there is not really an interrupt 0 (and pil_pending
+ * and irl_out bit zero are thus always zero) there is no need
+ * to do anything with cpu_irqs[i][0] and it is OK not to do
+ * the j=0 iteration of this loop.
+ */
+ for (j = MAX_PILS-1; j > 0; j--) {
if (pil_pending & (1 << j)) {
- if (!(s->pil_out[i] & (1 << j))) {
+ if (!(s->slaves[i].irl_out & (1 << j))) {
qemu_irq_raise(s->cpu_irqs[i][j]);
}
} else {
- if (s->pil_out[i] & (1 << j)) {
+ if (s->slaves[i].irl_out & (1 << j)) {
qemu_irq_lower(s->cpu_irqs[i][j]);
}
}
}
}
- s->pil_out[i] = pil_pending;
+ s->slaves[i].irl_out = pil_pending;
}
}
SLAVIO_INTCTLState *s = opaque;
uint32_t mask = 1 << irq;
uint32_t pil = intbit_to_level[irq];
+ unsigned int i;
- DPRINTF("Set cpu %d irq %d -> pil %d level %d\n", s->target_cpu, irq, pil,
- level);
+ trace_slavio_set_irq(s->target_cpu, irq, pil, level);
if (pil > 0) {
if (level) {
#ifdef DEBUG_IRQ_COUNT
s->irq_count[pil]++;
#endif
s->intregm_pending |= mask;
- s->slaves[s->target_cpu].intreg_pending |= 1 << pil;
+ if (pil == 15) {
+ for (i = 0; i < MAX_CPUS; i++) {
+ s->slaves[i].intreg_pending |= 1 << pil;
+ }
+ }
} else {
s->intregm_pending &= ~mask;
- s->slaves[s->target_cpu].intreg_pending &= ~(1 << pil);
+ if (pil == 15) {
+ for (i = 0; i < MAX_CPUS; i++) {
+ s->slaves[i].intreg_pending &= ~(1 << pil);
+ }
+ }
}
slavio_check_interrupts(s, 1);
}
{
SLAVIO_INTCTLState *s = opaque;
- DPRINTF("Set cpu %d local timer level %d\n", cpu, level);
+ trace_slavio_set_timer_irq_cpu(cpu, level);
if (level) {
- s->intregm_pending |= s->cputimer_mbit;
- s->slaves[cpu].intreg_pending |= s->cputimer_lbit;
+ s->slaves[cpu].intreg_pending |= CPU_IRQ_TIMER_IN;
} else {
- s->intregm_pending &= ~s->cputimer_mbit;
- s->slaves[cpu].intreg_pending &= ~s->cputimer_lbit;
+ s->slaves[cpu].intreg_pending &= ~CPU_IRQ_TIMER_IN;
}
slavio_check_interrupts(s, 1);
}
}
-static void slavio_intctl_save(QEMUFile *f, void *opaque)
+static int vmstate_intctl_post_load(void *opaque, int version_id)
{
SLAVIO_INTCTLState *s = opaque;
- int i;
- for (i = 0; i < MAX_CPUS; i++) {
- qemu_put_be32s(f, &s->slaves[i].intreg_pending);
- }
- qemu_put_be32s(f, &s->intregm_pending);
- qemu_put_be32s(f, &s->intregm_disabled);
- qemu_put_be32s(f, &s->target_cpu);
+ slavio_check_interrupts(s, 0);
+ return 0;
}
-static int slavio_intctl_load(QEMUFile *f, void *opaque, int version_id)
-{
- SLAVIO_INTCTLState *s = opaque;
- int i;
-
- if (version_id != 1)
- return -EINVAL;
+static const VMStateDescription vmstate_intctl_cpu = {
+ .name ="slavio_intctl_cpu",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT32(intreg_pending, SLAVIO_CPUINTCTLState),
+ VMSTATE_END_OF_LIST()
+ }
+};
- for (i = 0; i < MAX_CPUS; i++) {
- qemu_get_be32s(f, &s->slaves[i].intreg_pending);
+static const VMStateDescription vmstate_intctl = {
+ .name ="slavio_intctl",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .post_load = vmstate_intctl_post_load,
+ .fields = (VMStateField []) {
+ VMSTATE_STRUCT_ARRAY(slaves, SLAVIO_INTCTLState, MAX_CPUS, 1,
+ vmstate_intctl_cpu, SLAVIO_CPUINTCTLState),
+ VMSTATE_UINT32(intregm_pending, SLAVIO_INTCTLState),
+ VMSTATE_UINT32(intregm_disabled, SLAVIO_INTCTLState),
+ VMSTATE_UINT32(target_cpu, SLAVIO_INTCTLState),
+ VMSTATE_END_OF_LIST()
}
- qemu_get_be32s(f, &s->intregm_pending);
- qemu_get_be32s(f, &s->intregm_disabled);
- qemu_get_be32s(f, &s->target_cpu);
- slavio_check_interrupts(s, 0);
- return 0;
-}
+};
-static void slavio_intctl_reset(void *opaque)
+static void slavio_intctl_reset(DeviceState *d)
{
- SLAVIO_INTCTLState *s = opaque;
+ SLAVIO_INTCTLState *s = container_of(d, SLAVIO_INTCTLState, busdev.qdev);
int i;
for (i = 0; i < MAX_CPUS; i++) {
s->slaves[i].intreg_pending = 0;
+ s->slaves[i].irl_out = 0;
}
s->intregm_disabled = ~MASTER_IRQ_MASK;
s->intregm_pending = 0;
slavio_check_interrupts(s, 0);
}
-static void slavio_intctl_init1(SysBusDevice *dev)
+static int slavio_intctl_init1(SysBusDevice *dev)
{
SLAVIO_INTCTLState *s = FROM_SYSBUS(SLAVIO_INTCTLState, dev);
int io_memory;
qdev_init_gpio_in(&dev->qdev, slavio_set_irq_all, 32 + MAX_CPUS);
io_memory = cpu_register_io_memory(slavio_intctlm_mem_read,
- slavio_intctlm_mem_write, s);
+ slavio_intctlm_mem_write, s,
+ DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, INTCTLM_SIZE, io_memory);
- s->cputimer_mbit = 1 << s->cputimer_bit;
- s->cputimer_lbit = 1 << intbit_to_level[s->cputimer_bit];
for (i = 0; i < MAX_CPUS; i++) {
for (j = 0; j < MAX_PILS; j++) {
}
io_memory = cpu_register_io_memory(slavio_intctl_mem_read,
slavio_intctl_mem_write,
- &s->slaves[i]);
+ &s->slaves[i],
+ DEVICE_NATIVE_ENDIAN);
sysbus_init_mmio(dev, INTCTL_SIZE, io_memory);
s->slaves[i].cpu = i;
s->slaves[i].master = s;
}
- register_savevm("slavio_intctl", -1, 1, slavio_intctl_save,
- slavio_intctl_load, s);
- qemu_register_reset(slavio_intctl_reset, s);
- slavio_intctl_reset(s);
+
+ return 0;
}
static SysBusDeviceInfo slavio_intctl_info = {
.init = slavio_intctl_init1,
.qdev.name = "slavio_intctl",
.qdev.size = sizeof(SLAVIO_INTCTLState),
- .qdev.props = (Property[]) {
- DEFINE_PROP_UINT32("cputimer_bit", SLAVIO_INTCTLState, cputimer_bit, 0),
- DEFINE_PROP_END_OF_LIST(),
- }
+ .qdev.vmsd = &vmstate_intctl,
+ .qdev.reset = slavio_intctl_reset,
};
static void slavio_intctl_register_devices(void)
projects / qemu.git / blobdiff