i.MX: Standardize i.MX GPT debug

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: NPeter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: NJean-Christophe Dubois <jcd@tribudubois.net>
Message-id: b7ce7e98a051479453744aded122789531d80a44.1445781957.git.jcd@tribudubois.net
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/timer/imx_gpt.c

@@ -16,11 +16,17 @@
 #include "hw/misc/imx_ccm.h"
 #include "qemu/main-loop.h"
 
-/*
- * Define to 1 for debug messages
- */
-#define DEBUG_TIMER 0
-#if DEBUG_TIMER
+#ifndef DEBUG_IMX_GPT
+#define DEBUG_IMX_GPT 0
+#endif
+
+#define DPRINTF(fmt, args...) \
+    do { \
+        if (DEBUG_IMX_GPT) { \
+            fprintf(stderr, "[%s]%s: " fmt , TYPE_IMX_GPT, \
+                                             __func__, ##args); \
+        } \
+    } while (0)
 
 static char const *imx_gpt_reg_name(uint32_t reg)
 {
@@ -50,24 +56,6 @@ static char const *imx_gpt_reg_name(uint32_t reg)
     }
 }
 
-#  define DPRINTF(fmt, args...) \
-          do { printf("%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
-
 static const VMStateDescription vmstate_imx_timer_gpt = {
     .name = TYPE_IMX_GPT,
     .version_id = 3,
@@ -224,9 +212,8 @@ static uint64_t imx_gpt_read(void *opaque, hwaddr offset, unsigned size)
 {
     IMXGPTState *s = IMX_GPT(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;
@@ -256,12 +243,14 @@ static uint64_t imx_gpt_read(void *opaque, hwaddr offset, unsigned size)
         break;
 
     case 7: /* input Capture Register 1 */
-        qemu_log_mask(LOG_UNIMP, "icr1 feature is not implemented\n");
+        qemu_log_mask(LOG_UNIMP, "[%s]%s: icr1 feature is not implemented\n",
+                      TYPE_IMX_GPT, __func__);
         reg_value = s->icr1;
         break;
 
     case 8: /* input Capture Register 2 */
-        qemu_log_mask(LOG_UNIMP, "icr2 feature is not implemented\n");
+        qemu_log_mask(LOG_UNIMP, "[%s]%s: icr2 feature is not implemented\n",
+                      TYPE_IMX_GPT, __func__);
         reg_value = s->icr2;
         break;
 
@@ -271,11 +260,12 @@ static uint64_t imx_gpt_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_GPT, __func__, offset);
         break;
     }
 
-    DPRINTF("(%s) = 0x%08x\n", imx_gpt_reg_name(reg), reg_value);
+    DPRINTF("(%s) = 0x%08x\n", imx_gpt_reg_name(offset >> 2), reg_value);
 
     return reg_value;
 }
@@ -322,12 +312,11 @@ static void imx_gpt_write(void *opaque, hwaddr offset, uint64_t value,
 {
     IMXGPTState *s = IMX_GPT(opaque);
     uint32_t oldreg;
-    uint32_t reg = offset >> 2;
 
-    DPRINTF("(%s, value = 0x%08x)\n", imx_gpt_reg_name(reg),
+    DPRINTF("(%s, value = 0x%08x)\n", imx_gpt_reg_name(offset >> 2),
             (uint32_t)value);
 
-    switch (reg) {
+    switch (offset >> 2) {
     case 0:
         oldreg = s->cr;
         s->cr = value & ~0x7c14;
@@ -403,7 +392,8 @@ static void imx_gpt_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_GPT, __func__, offset);
         break;
     }
 }