[Qemu-devel] [PATCH v1 11/11] ppc/xics: Add xics to the monitor "info pic" command

[Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>]

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Useful to debug interrupt problems.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
---
 hmp-commands-info.hx  |  2 ++
 hw/intc/xics.c        | 38 ++++++++++++++++++++++++++++++++++++++
 hw/ppc/ppc.c          | 14 ++++++++++++++
 include/hw/ppc/ppc.h  |  1 +
 include/hw/ppc/xics.h |  2 ++
 monitor.c             |  4 ++++
 6 files changed, 61 insertions(+)

diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx
index 7da9e6c..e4b90b9 100644
--- a/hmp-commands-info.hx
+++ b/hmp-commands-info.hx
@@ -203,6 +203,8 @@ ETEXI
         .mhandler.cmd = sun4m_hmp_info_pic,
 #elif defined(TARGET_LM32)
         .mhandler.cmd = lm32_hmp_info_pic,
+#elif defined(TARGET_PPC)
+        .mhandler.cmd = ppc_hmp_info_pic,
 #else
         .mhandler.cmd = hmp_info_pic,
 #endif
diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index e2aa48d..19eeea9 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -35,6 +35,9 @@
 #include "hw/ppc/xics.h"
 #include "qemu/error-report.h"
 #include "qapi/visitor.h"
+#include "monitor/monitor.h"
+
+static XICSState *g_xics;
 
 int get_cpu_index_by_dt_id(int cpu_dt_id)
 {
@@ -192,6 +195,9 @@ static void xics_common_initfn(Object *obj)
     object_property_add(obj, "nr_servers", "int",
                         xics_prop_get_nr_servers, xics_prop_set_nr_servers,
                         NULL, NULL, NULL);
+
+    /* For exclusive use of monitor command */
+    g_xics = XICS_COMMON(obj);
 }
 
 static void xics_common_class_init(ObjectClass *oc, void *data)
@@ -636,6 +642,38 @@ static int ics_dispatch_post_load(void *opaque, int version_id)
     return 0;
 }
 
+void xics_hmp_info_pic(Monitor *mon, const QDict *qdict)
+{
+    ICSState *ics;
+    uint32_t i;
+
+    for (i = 0; i < g_xics->nr_servers; i++) {
+        ICPState *icp = &g_xics->ss[i];
+
+        if (!icp->output) {
+            continue;
+        }
+        monitor_printf(mon, "CPU %d XIRR=%08x (%p) PP=%02x MFRR=%02x\n",
+                       i, icp->xirr, icp->xirr_owner,
+                       icp->pending_priority, icp->mfrr);
+    }
+    QLIST_FOREACH(ics, &g_xics->ics, list) {
+        monitor_printf(mon, "ICS %4x..%4x %p\n",
+                       ics->offset, ics->offset + ics->nr_irqs - 1, ics);
+        for (i = 0; i < ics->nr_irqs; i++) {
+            ICSIRQState *irq = ics->irqs + i;
+
+            if (!(irq->flags & XICS_FLAGS_IRQ_MASK)) {
+                continue;
+            }
+            monitor_printf(mon, "  %4x %s %02x %02x\n",
+                           ics->offset + i,
+                           (irq->flags & XICS_FLAGS_IRQ_LSI) ? "LSI" : "MSI",
+                           irq->priority, irq->status);
+        }
+    }
+}
+
 static const VMStateDescription vmstate_ics_irq = {
     .name = "ics/irq",
     .version_id = 2,
diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
index 1bcf740..f3ee1d6 100644
--- a/hw/ppc/ppc.c
+++ b/hw/ppc/ppc.c
@@ -27,6 +27,7 @@
 #include "hw/hw.h"
 #include "hw/ppc/ppc.h"
 #include "hw/ppc/ppc_e500.h"
+#include "hw/i386/pc.h"
 #include "qemu/timer.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/cpus.h"
@@ -38,6 +39,10 @@
 #include "kvm_ppc.h"
 #include "trace.h"
 
+#if defined(TARGET_PPC64)
+#include "hw/ppc/xics.h"
+#endif
+
 //#define PPC_DEBUG_IRQ
 //#define PPC_DEBUG_TB
 
@@ -1343,3 +1348,12 @@ PowerPCCPU *ppc_get_vcpu_by_dt_id(int cpu_dt_id)
 
     return NULL;
 }
+
+void ppc_hmp_info_pic(Monitor *mon, const QDict *qdict)
+{
+    /* Call in turn every PIC around. OpenPIC doesn't have one yet */
+#ifdef TARGET_PPC64
+    xics_hmp_info_pic(mon, qdict);
+#endif
+    hmp_info_pic(mon, qdict);
+}
diff --git a/include/hw/ppc/ppc.h b/include/hw/ppc/ppc.h
index 5617dc4..8076797 100644
--- a/include/hw/ppc/ppc.h
+++ b/include/hw/ppc/ppc.h
@@ -3,6 +3,7 @@
 
 #include "target-ppc/cpu-qom.h"
 
+void ppc_hmp_info_pic(Monitor *mon, const QDict *qdict);
 void ppc_set_irq(PowerPCCPU *cpu, int n_IRQ, int level);
 
 /* PowerPC hardware exceptions management helpers */
diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
index 0e47ecb..1dbfa2c 100644
--- a/include/hw/ppc/xics.h
+++ b/include/hw/ppc/xics.h
@@ -218,4 +218,6 @@ void ics_set_irq_type(ICSState *ics, int srcno, bool lsi);
 ICSState *xics_find_source(XICSState *icp, int irq);
 void xics_add_ics(XICSState *xics);
 
+void xics_hmp_info_pic(Monitor *mon, const QDict *qdict);
+
 #endif /* __XICS_H__ */
diff --git a/monitor.c b/monitor.c
index 6f960f1..66d682b 100644
--- a/monitor.c
+++ b/monitor.c
@@ -94,6 +94,10 @@
 #include "hw/s390x/storage-keys.h"
 #endif
 
+#if defined(TARGET_PPC)
+#include "hw/ppc/ppc.h"
+#endif
+
 /*
  * Supported types:
  *
-- 
2.7.4