[RFC PATCH v2 1/4] hw/acpi/ich9: Trace ich9_gpe_readb()/writeb()

[Julia Suvorova <jusual@redhat.com>]

Add trace events similar to piix4_gpe_readb() to check gpe status.

Signed-off-by: Julia Suvorova <jusual@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
---
 hw/acpi/ich9.c       | 7 ++++++-
 hw/acpi/trace-events | 4 ++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
index 6a19070cec..a2a1742aa6 100644
--- a/hw/acpi/ich9.c
+++ b/hw/acpi/ich9.c
@@ -36,6 +36,7 @@
 #include "hw/acpi/acpi.h"
 #include "hw/acpi/tco.h"
 #include "exec/address-spaces.h"
+#include "trace.h"
 
 #include "hw/i386/ich9.h"
 #include "hw/mem/pc-dimm.h"
@@ -59,13 +60,17 @@ static void ich9_pm_update_sci_fn(ACPIREGS *regs)
 static uint64_t ich9_gpe_readb(void *opaque, hwaddr addr, unsigned width)
 {
     ICH9LPCPMRegs *pm = opaque;
-    return acpi_gpe_ioport_readb(&pm->acpi_regs, addr);
+    uint64_t val = acpi_gpe_ioport_readb(&pm->acpi_regs, addr);
+
+    trace_ich9_gpe_readb(addr, width, val);
+    return val;
 }
 
 static void ich9_gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
                             unsigned width)
 {
     ICH9LPCPMRegs *pm = opaque;
+    trace_ich9_gpe_writeb(addr, width, val);
     acpi_gpe_ioport_writeb(&pm->acpi_regs, addr, val);
     acpi_update_sci(&pm->acpi_regs, pm->irq);
 }
diff --git a/hw/acpi/trace-events b/hw/acpi/trace-events
index afbc77de1c..b9f4827afc 100644
--- a/hw/acpi/trace-events
+++ b/hw/acpi/trace-events
@@ -32,6 +32,10 @@ cpuhp_acpi_ejecting_cpu(uint32_t idx) "0x%"PRIx32
 cpuhp_acpi_write_ost_ev(uint32_t slot, uint32_t ev) "idx[0x%"PRIx32"] OST EVENT: 0x%"PRIx32
 cpuhp_acpi_write_ost_status(uint32_t slot, uint32_t st) "idx[0x%"PRIx32"] OST STATUS: 0x%"PRIx32
 
+# ich9.c
+ich9_gpe_readb(uint64_t addr, unsigned width, uint64_t val) "addr: 0x%" PRIx64 " width: %d ==> 0x%" PRIx64
+ich9_gpe_writeb(uint64_t addr, unsigned width, uint64_t val) "addr: 0x%" PRIx64 " width: %d <== 0x%" PRIx64
+
 # pcihp.c
 acpi_pci_eject_slot(unsigned bsel, unsigned slot) "bsel: %u slot: %u"
 acpi_pci_unplug(int bsel, int slot) "bsel: %d slot: %d"
-- 
2.25.4