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intc/arm_gic: Improve traces 

Add some traces to the ARM GIC to catch register accesses (distributor,
(v)cpu interface and virtual interface), and to take into account
virtualization extensions (print `vcpu` instead of `cpu` when needed).

Also add some virtualization extensions specific traces: LR updating
and maintenance IRQ generation.

Signed-off-by: Luc Michel <luc.michel@greensocs.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20180727095421.386-19-luc.michel@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Luc Michel 2018-08-14 17:17:21 +01:00 committed by Peter Maydell
parent 50e579262d
commit 067a2b9c15
2 changed files with 35 additions and 8 deletions
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31
hw/intc/arm_gic.c
View File

@ -184,8 +184,10 @@ static inline void gic_update_internal(GICState *s, bool virt)
}
if (best_irq != 1023) {
trace_gic_update_bestirq(cpu, best_irq, best_prio,
s->priority_mask[cpu_iface], s->running_priority[cpu_iface]);
trace_gic_update_bestirq(virt ? "vcpu" : "cpu", cpu,
best_irq, best_prio,
s->priority_mask[cpu_iface],
s->running_priority[cpu_iface]);
}
irq_level = fiq_level = 0;
@ -332,6 +334,7 @@ static void gic_update_maintenance(GICState *s)
gic_compute_misr(s, cpu);
maint_level = (s->h_hcr[cpu] & R_GICH_HCR_EN_MASK) && s->h_misr[cpu];
trace_gic_update_maintenance_irq(cpu, maint_level);
qemu_set_irq(s->maintenance_irq[cpu], maint_level);
}
}
@ -597,7 +600,8 @@ uint32_t gic_acknowledge_irq(GICState *s, int cpu, MemTxAttrs attrs)
* is in the wrong group.
*/
irq = gic_get_current_pending_irq(s, cpu, attrs);
trace_gic_acknowledge_irq(gic_get_vcpu_real_id(cpu), irq);
trace_gic_acknowledge_irq(gic_is_vcpu(cpu) ? "vcpu" : "cpu",
gic_get_vcpu_real_id(cpu), irq);
if (irq >= GIC_MAXIRQ) {
DPRINTF("ACK, no pending interrupt or it is hidden: %d\n", irq);
@ -1130,20 +1134,23 @@ static MemTxResult gic_dist_read(void *opaque, hwaddr offset, uint64_t *data,
switch (size) {
case 1:
*data = gic_dist_readb(opaque, offset, attrs);
return MEMTX_OK;
break;
case 2:
*data = gic_dist_readb(opaque, offset, attrs);
*data |= gic_dist_readb(opaque, offset + 1, attrs) << 8;
return MEMTX_OK;
break;
case 4:
*data = gic_dist_readb(opaque, offset, attrs);
*data |= gic_dist_readb(opaque, offset + 1, attrs) << 8;
*data |= gic_dist_readb(opaque, offset + 2, attrs) << 16;
*data |= gic_dist_readb(opaque, offset + 3, attrs) << 24;
return MEMTX_OK;
break;
default:
return MEMTX_ERROR;
}
trace_gic_dist_read(offset, size, *data);
return MEMTX_OK;
}
static void gic_dist_writeb(void *opaque, hwaddr offset,
@ -1482,6 +1489,8 @@ static void gic_dist_writel(void *opaque, hwaddr offset,
static MemTxResult gic_dist_write(void *opaque, hwaddr offset, uint64_t data,
unsigned size, MemTxAttrs attrs)
{
trace_gic_dist_write(offset, size, data);
switch (size) {
case 1:
gic_dist_writeb(opaque, offset, data, attrs);
@ -1638,12 +1647,18 @@ static MemTxResult gic_cpu_read(GICState *s, int cpu, int offset,
*data = 0;
break;
}
trace_gic_cpu_read(gic_is_vcpu(cpu) ? "vcpu" : "cpu",
gic_get_vcpu_real_id(cpu), offset, *data);
return MEMTX_OK;
}
static MemTxResult gic_cpu_write(GICState *s, int cpu, int offset,
uint32_t value, MemTxAttrs attrs)
{
trace_gic_cpu_write(gic_is_vcpu(cpu) ? "vcpu" : "cpu",
gic_get_vcpu_real_id(cpu), offset, value);
switch (offset) {
case 0x00: /* Control */
gic_set_cpu_control(s, cpu, value, attrs);
@ -1894,6 +1909,7 @@ static MemTxResult gic_hyp_read(void *opaque, int cpu, hwaddr addr,
return MEMTX_OK;
}
trace_gic_hyp_read(addr, *data);
return MEMTX_OK;
}
@ -1903,6 +1919,8 @@ static MemTxResult gic_hyp_write(void *opaque, int cpu, hwaddr addr,
GICState *s = ARM_GIC(opaque);
int vcpu = cpu + GIC_NCPU;
trace_gic_hyp_write(addr, value);
switch (addr) {
case A_GICH_HCR: /* Hypervisor Control */
s->h_hcr[cpu] = value & GICH_HCR_MASK;
@ -1926,6 +1944,7 @@ static MemTxResult gic_hyp_write(void *opaque, int cpu, hwaddr addr,
}
s->h_lr[lr_idx][cpu] = value & GICH_LR_MASK;
trace_gic_lr_entry(cpu, lr_idx, s->h_lr[lr_idx][cpu]);
break;
}

12
hw/intc/trace-events
View File

@ -92,9 +92,17 @@ aspeed_vic_write(uint64_t offset, unsigned size, uint32_t data) "To 0x%" PRIx64
gic_enable_irq(int irq) "irq %d enabled"
gic_disable_irq(int irq) "irq %d disabled"
gic_set_irq(int irq, int level, int cpumask, int target) "irq %d level %d cpumask 0x%x target 0x%x"
gic_update_bestirq(int cpu, int irq, int prio, int priority_mask, int running_priority) "cpu %d irq %d priority %d cpu priority mask %d cpu running priority %d"
gic_update_bestirq(const char *s, int cpu, int irq, int prio, int priority_mask, int running_priority) "%s %d irq %d priority %d cpu priority mask %d cpu running priority %d"
gic_update_set_irq(int cpu, const char *name, int level) "cpu[%d]: %s = %d"
gic_acknowledge_irq(int cpu, int irq) "cpu %d acknowledged irq %d"
gic_acknowledge_irq(const char *s, int cpu, int irq) "%s %d acknowledged irq %d"
gic_cpu_write(const char *s, int cpu, int addr, uint32_t val) "%s %d iface write at 0x%08x 0x%08" PRIx32
gic_cpu_read(const char *s, int cpu, int addr, uint32_t val) "%s %d iface read at 0x%08x: 0x%08" PRIx32
gic_hyp_read(int addr, uint32_t val) "hyp read at 0x%08x: 0x%08" PRIx32
gic_hyp_write(int addr, uint32_t val) "hyp write at 0x%08x: 0x%08" PRIx32
gic_dist_read(int addr, unsigned int size, uint32_t val) "dist read at 0x%08x size %u: 0x%08" PRIx32
gic_dist_write(int addr, unsigned int size, uint32_t val) "dist write at 0x%08x size %u: 0x%08" PRIx32
gic_lr_entry(int cpu, int entry, uint32_t val) "cpu %d: new lr entry %d: 0x%08" PRIx32
gic_update_maintenance_irq(int cpu, int val) "cpu %d: maintenance = %d"
# hw/intc/arm_gicv3_cpuif.c
gicv3_icc_pmr_read(uint32_t cpu, uint64_t val) "GICv3 ICC_PMR read cpu 0x%x value 0x%" PRIx64