macfb: add trace events for reading and writing the control registers

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211007221253.29024-7-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

hw/display/macfb.c

@@ -20,6 +20,7 @@
 #include "qapi/error.h"
 #include "hw/qdev-properties.h"
 #include "migration/vmstate.h"
+#include "trace.h"
 
 #define VIDEO_BASE 0x00001000
 #define DAFB_BASE  0x00800000
@@ -289,7 +290,10 @@ static uint64_t macfb_ctrl_read(void *opaque,
                                 hwaddr addr,
                                 unsigned int size)
 {
-    return 0;
+    uint64_t val = 0;
+
+    trace_macfb_ctrl_read(addr, val, size);
+    return val;
 }
 
 static void macfb_ctrl_write(void *opaque,
@@ -311,6 +315,8 @@ static void macfb_ctrl_write(void *opaque,
         }
         break;
     }
+
+    trace_macfb_ctrl_write(addr, val, size);
 }
 
 static const MemoryRegionOps macfb_ctrl_ops = {

hw/display/trace-events

@@ -167,3 +167,7 @@ sm501_disp_ctrl_read(uint32_t addr, uint32_t val) "addr=0x%x, val=0x%x"
 sm501_disp_ctrl_write(uint32_t addr, uint32_t val) "addr=0x%x, val=0x%x"
 sm501_2d_engine_read(uint32_t addr, uint32_t val) "addr=0x%x, val=0x%x"
 sm501_2d_engine_write(uint32_t addr, uint32_t val) "addr=0x%x, val=0x%x"
+
+# macfb.c
+macfb_ctrl_read(uint64_t addr, uint64_t value, unsigned int size) "addr 0x%"PRIx64 " value 0x%"PRIx64 " size %u"
+macfb_ctrl_write(uint64_t addr, uint64_t value, unsigned int size) "addr 0x%"PRIx64 " value 0x%"PRIx64 " size %u"