[Qemu-devel] [PULL 12/27] i.MX: Standardize i.MX EPIT debug

[Peter Maydell <peter.maydell@linaro.org>]

From: Jean-Christophe Dubois <jcd@tribudubois.net>

The goal is to have debug code always compiled during build.

We standardize all debug output on the following format:

[QOM_TYPE_NAME]reporting_function: debug message

We also replace IPRINTF with qemu_log_mask(). The qemu_log_mask() output
is following the same format as the above debug.

Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net>
Message-id: 5bbad71517ca728d8865f7b9f998baa0df022794.1445781957.git.jcd@tribudubois.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/timer/imx_epit.c | 48 ++++++++++++++++++++----------------------------
 1 file changed, 20 insertions(+), 28 deletions(-)

diff --git a/hw/timer/imx_epit.c b/hw/timer/imx_epit.c
index 9649851..967be4a 100644
--- a/hw/timer/imx_epit.c
+++ b/hw/timer/imx_epit.c
@@ -16,8 +16,17 @@
 #include "hw/misc/imx_ccm.h"
 #include "qemu/main-loop.h"
 
-#define DEBUG_TIMER 0
-#if DEBUG_TIMER
+#ifndef DEBUG_IMX_EPIT
+#define DEBUG_IMX_EPIT 0
+#endif
+
+#define DPRINTF(fmt, args...) \
+    do { \
+        if (DEBUG_IMX_EPIT) { \
+            fprintf(stderr, "[%s]%s: " fmt , TYPE_IMX_EPIT, \
+                                             __func__, ##args); \
+        } \
+    } while (0)
 
 static char const *imx_epit_reg_name(uint32_t reg)
 {
@@ -37,24 +46,6 @@ static char const *imx_epit_reg_name(uint32_t reg)
     }
 }
 
-#  define DPRINTF(fmt, args...) \
-    do { fprintf(stderr, "%s: " fmt , __func__, ##args); } while (0)
-#else
-#  define DPRINTF(fmt, args...) do {} while (0)
-#endif
-
-/*
- * Define to 1 for messages about attempts to
- * access unimplemented registers or similar.
- */
-#define DEBUG_IMPLEMENTATION 1
-#if DEBUG_IMPLEMENTATION
-#  define IPRINTF(fmt, args...) \
-          do { fprintf(stderr, "%s: " fmt, __func__, ##args); } while (0)
-#else
-#  define IPRINTF(fmt, args...) do {} while (0)
-#endif
-
 /*
  * Exact clock frequencies vary from board to board.
  * These are typical.
@@ -136,9 +127,8 @@ static uint64_t imx_epit_read(void *opaque, hwaddr offset, unsigned size)
 {
     IMXEPITState *s = IMX_EPIT(opaque);
     uint32_t reg_value = 0;
-    uint32_t reg = offset >> 2;
 
-    switch (reg) {
+    switch (offset >> 2) {
     case 0: /* Control Register */
         reg_value = s->cr;
         break;
@@ -161,11 +151,12 @@ static uint64_t imx_epit_read(void *opaque, hwaddr offset, unsigned size)
         break;
 
     default:
-        IPRINTF("Bad offset %x\n", reg);
+        qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
+                      HWADDR_PRIx "\n", TYPE_IMX_EPIT, __func__, offset);
         break;
     }
 
-    DPRINTF("(%s) = 0x%08x\n", imx_epit_reg_name(reg), reg_value);
+    DPRINTF("(%s) = 0x%08x\n", imx_epit_reg_name(offset >> 2), reg_value);
 
     return reg_value;
 }
@@ -190,12 +181,12 @@ static void imx_epit_write(void *opaque, hwaddr offset, uint64_t value,
                            unsigned size)
 {
     IMXEPITState *s = IMX_EPIT(opaque);
-    uint32_t reg = offset >> 2;
     uint64_t oldcr;
 
-    DPRINTF("(%s, value = 0x%08x)\n", imx_epit_reg_name(reg), (uint32_t)value);
+    DPRINTF("(%s, value = 0x%08x)\n", imx_epit_reg_name(offset >> 2),
+            (uint32_t)value);
 
-    switch (reg) {
+    switch (offset >> 2) {
     case 0: /* CR */
 
         oldcr = s->cr;
@@ -271,7 +262,8 @@ static void imx_epit_write(void *opaque, hwaddr offset, uint64_t value,
         break;
 
     default:
-        IPRINTF("Bad offset %x\n", reg);
+        qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%"
+                      HWADDR_PRIx "\n", TYPE_IMX_EPIT, __func__, offset);
 
         break;
     }
-- 
1.9.1