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-rw-r--r--include/drm/drm_print.h219
1 files changed, 219 insertions, 0 deletions
diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index ca4d7c6321f2..5f9932e2246e 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -80,6 +80,29 @@ void __drm_printfn_debug(struct drm_printer *p, struct va_format *vaf);
__printf(2, 3)
void drm_printf(struct drm_printer *p, const char *f, ...);
+/**
+ * drm_vprintf - print to a &drm_printer stream
+ * @p: the &drm_printer
+ * @fmt: format string
+ * @va: the va_list
+ */
+__printf(2, 0)
+static inline void
+drm_vprintf(struct drm_printer *p, const char *fmt, va_list *va)
+{
+ struct va_format vaf = { .fmt = fmt, .va = va };
+
+ p->printfn(p, &vaf);
+}
+
+/**
+ * drm_printf_indent - Print to a &drm_printer stream with indentation
+ * @printer: DRM printer
+ * @indent: Tab indentation level (max 5)
+ * @fmt: Format string
+ */
+#define drm_printf_indent(printer, indent, fmt, ...) \
+ drm_printf((printer), "%.*s" fmt, (indent), "\t\t\t\t\tX", ##__VA_ARGS__)
/**
* drm_seq_file_printer - construct a &drm_printer that outputs to &seq_file
@@ -128,4 +151,200 @@ static inline struct drm_printer drm_debug_printer(const char *prefix)
};
return p;
}
+
+/*
+ * The following categories are defined:
+ *
+ * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
+ * This is the category used by the DRM_DEBUG() macro.
+ *
+ * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
+ * This is the category used by the DRM_DEBUG_DRIVER() macro.
+ *
+ * KMS: used in the modesetting code.
+ * This is the category used by the DRM_DEBUG_KMS() macro.
+ *
+ * PRIME: used in the prime code.
+ * This is the category used by the DRM_DEBUG_PRIME() macro.
+ *
+ * ATOMIC: used in the atomic code.
+ * This is the category used by the DRM_DEBUG_ATOMIC() macro.
+ *
+ * VBL: used for verbose debug message in the vblank code
+ * This is the category used by the DRM_DEBUG_VBL() macro.
+ *
+ * Enabling verbose debug messages is done through the drm.debug parameter,
+ * each category being enabled by a bit.
+ *
+ * drm.debug=0x1 will enable CORE messages
+ * drm.debug=0x2 will enable DRIVER messages
+ * drm.debug=0x3 will enable CORE and DRIVER messages
+ * ...
+ * drm.debug=0x3f will enable all messages
+ *
+ * An interesting feature is that it's possible to enable verbose logging at
+ * run-time by echoing the debug value in its sysfs node:
+ * # echo 0xf > /sys/module/drm/parameters/debug
+ */
+#define DRM_UT_NONE 0x00
+#define DRM_UT_CORE 0x01
+#define DRM_UT_DRIVER 0x02
+#define DRM_UT_KMS 0x04
+#define DRM_UT_PRIME 0x08
+#define DRM_UT_ATOMIC 0x10
+#define DRM_UT_VBL 0x20
+#define DRM_UT_STATE 0x40
+#define DRM_UT_LEASE 0x80
+
+__printf(6, 7)
+void drm_dev_printk(const struct device *dev, const char *level,
+ unsigned int category, const char *function_name,
+ const char *prefix, const char *format, ...);
+__printf(3, 4)
+void drm_printk(const char *level, unsigned int category,
+ const char *format, ...);
+
+/* Macros to make printk easier */
+
+#define _DRM_PRINTK(once, level, fmt, ...) \
+ do { \
+ printk##once(KERN_##level "[" DRM_NAME "] " fmt, \
+ ##__VA_ARGS__); \
+ } while (0)
+
+#define DRM_INFO(fmt, ...) \
+ _DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__)
+#define DRM_NOTE(fmt, ...) \
+ _DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__)
+#define DRM_WARN(fmt, ...) \
+ _DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__)
+
+#define DRM_INFO_ONCE(fmt, ...) \
+ _DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__)
+#define DRM_NOTE_ONCE(fmt, ...) \
+ _DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__)
+#define DRM_WARN_ONCE(fmt, ...) \
+ _DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__)
+
+/**
+ * Error output.
+ *
+ * @dev: device pointer
+ * @fmt: printf() like format string.
+ */
+#define DRM_DEV_ERROR(dev, fmt, ...) \
+ drm_dev_printk(dev, KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*",\
+ fmt, ##__VA_ARGS__)
+#define DRM_ERROR(fmt, ...) \
+ drm_printk(KERN_ERR, DRM_UT_NONE, fmt, ##__VA_ARGS__)
+
+/**
+ * Rate limited error output. Like DRM_ERROR() but won't flood the log.
+ *
+ * @dev: device pointer
+ * @fmt: printf() like format string.
+ */
+#define DRM_DEV_ERROR_RATELIMITED(dev, fmt, ...) \
+({ \
+ static DEFINE_RATELIMIT_STATE(_rs, \
+ DEFAULT_RATELIMIT_INTERVAL, \
+ DEFAULT_RATELIMIT_BURST); \
+ \
+ if (__ratelimit(&_rs)) \
+ DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__); \
+})
+#define DRM_ERROR_RATELIMITED(fmt, ...) \
+ DRM_DEV_ERROR_RATELIMITED(NULL, fmt, ##__VA_ARGS__)
+
+#define DRM_DEV_INFO(dev, fmt, ...) \
+ drm_dev_printk(dev, KERN_INFO, DRM_UT_NONE, __func__, "", fmt, \
+ ##__VA_ARGS__)
+
+#define DRM_DEV_INFO_ONCE(dev, fmt, ...) \
+({ \
+ static bool __print_once __read_mostly; \
+ if (!__print_once) { \
+ __print_once = true; \
+ DRM_DEV_INFO(dev, fmt, ##__VA_ARGS__); \
+ } \
+})
+
+/**
+ * Debug output.
+ *
+ * @dev: device pointer
+ * @fmt: printf() like format string.
+ */
+#define DRM_DEV_DEBUG(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_CORE, __func__, "", fmt, \
+ ##args)
+#define DRM_DEBUG(fmt, ...) \
+ drm_printk(KERN_DEBUG, DRM_UT_CORE, fmt, ##__VA_ARGS__)
+
+#define DRM_DEV_DEBUG_DRIVER(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_DRIVER, __func__, "", \
+ fmt, ##args)
+#define DRM_DEBUG_DRIVER(fmt, ...) \
+ drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)
+
+#define DRM_DEV_DEBUG_KMS(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt, \
+ ##args)
+#define DRM_DEBUG_KMS(fmt, ...) \
+ drm_printk(KERN_DEBUG, DRM_UT_KMS, fmt, ##__VA_ARGS__)
+
+#define DRM_DEV_DEBUG_PRIME(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_PRIME, __func__, "", \
+ fmt, ##args)
+#define DRM_DEBUG_PRIME(fmt, ...) \
+ drm_printk(KERN_DEBUG, DRM_UT_PRIME, fmt, ##__VA_ARGS__)
+
+#define DRM_DEV_DEBUG_ATOMIC(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ATOMIC, __func__, "", \
+ fmt, ##args)
+#define DRM_DEBUG_ATOMIC(fmt, ...) \
+ drm_printk(KERN_DEBUG, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__)
+
+#define DRM_DEV_DEBUG_VBL(dev, fmt, args...) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt, \
+ ##args)
+#define DRM_DEBUG_VBL(fmt, ...) \
+ drm_printk(KERN_DEBUG, DRM_UT_VBL, fmt, ##__VA_ARGS__)
+
+#define DRM_DEBUG_LEASE(fmt, ...) \
+ drm_printk(KERN_DEBUG, DRM_UT_LEASE, fmt, ##__VA_ARGS__)
+
+#define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, level, fmt, args...) \
+({ \
+ static DEFINE_RATELIMIT_STATE(_rs, \
+ DEFAULT_RATELIMIT_INTERVAL, \
+ DEFAULT_RATELIMIT_BURST); \
+ if (__ratelimit(&_rs)) \
+ drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ ## level, \
+ __func__, "", fmt, ##args); \
+})
+
+/**
+ * Rate limited debug output. Like DRM_DEBUG() but won't flood the log.
+ *
+ * @dev: device pointer
+ * @fmt: printf() like format string.
+ */
+#define DRM_DEV_DEBUG_RATELIMITED(dev, fmt, args...) \
+ DEV__DRM_DEFINE_DEBUG_RATELIMITED(dev, CORE, fmt, ##args)
+#define DRM_DEBUG_RATELIMITED(fmt, args...) \
+ DRM_DEV_DEBUG_RATELIMITED(NULL, fmt, ##args)
+#define DRM_DEV_DEBUG_DRIVER_RATELIMITED(dev, fmt, args...) \
+ _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, DRIVER, fmt, ##args)
+#define DRM_DEBUG_DRIVER_RATELIMITED(fmt, args...) \
+ DRM_DEV_DEBUG_DRIVER_RATELIMITED(NULL, fmt, ##args)
+#define DRM_DEV_DEBUG_KMS_RATELIMITED(dev, fmt, args...) \
+ _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, KMS, fmt, ##args)
+#define DRM_DEBUG_KMS_RATELIMITED(fmt, args...) \
+ DRM_DEV_DEBUG_KMS_RATELIMITED(NULL, fmt, ##args)
+#define DRM_DEV_DEBUG_PRIME_RATELIMITED(dev, fmt, args...) \
+ _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, PRIME, fmt, ##args)
+#define DRM_DEBUG_PRIME_RATELIMITED(fmt, args...) \
+ DRM_DEV_DEBUG_PRIME_RATELIMITED(NULL, fmt, ##args)
+
#endif /* DRM_PRINT_H_ */