korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-19 02:04:19 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915: add MMIO debug output

Browse Source 
Useful for capturing register read/write traces to send to the hw guys.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Jesse Barnes 2010-08-13 15:50:28 -07:00 committed by Chris Wilson
parent 6c9547ff35
commit be282fd48e
1 changed files with 28 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/gpu/drm/i915/i915_drv.h
View File

@ -264,6 +264,9 @@ typedef struct drm_i915_private {
int front_offset;
int current_page;
int page_flipping;
#define I915_DEBUG_READ (1<<0)
#define I915_DEBUG_WRITE (1<<1)
unsigned long debug_flags;
wait_queue_head_t irq_queue;
atomic_t irq_received;
@ -1100,8 +1103,26 @@ extern void intel_overlay_print_error_state(struct seq_file *m, struct intel_ove
LOCK_TEST_WITH_RETURN(dev, file_priv); \
} while (0)
#define I915_READ(reg) readl(dev_priv->regs + (reg))
#define I915_WRITE(reg, val) writel(val, dev_priv->regs + (reg))
static inline u32 i915_read(struct drm_i915_private *dev_priv, u32 reg)
{
u32 val;
val = readl(dev_priv->regs + reg);
if (dev_priv->debug_flags & I915_DEBUG_READ)
printk(KERN_ERR "read 0x%08x from 0x%08x\n", val, reg);
return val;
}
static inline void i915_write(struct drm_i915_private *dev_priv, u32 reg,
u32 val)
{
writel(val, dev_priv->regs + reg);
if (dev_priv->debug_flags & I915_DEBUG_WRITE)
printk(KERN_ERR "wrote 0x%08x to 0x%08x\n", val, reg);
}
#define I915_READ(reg) i915_read(dev_priv, (reg))
#define I915_WRITE(reg, val) i915_write(dev_priv, (reg), (val))
#define I915_READ16(reg) readw(dev_priv->regs + (reg))
#define I915_WRITE16(reg, val) writel(val, dev_priv->regs + (reg))
#define I915_READ8(reg) readb(dev_priv->regs + (reg))
@ -1111,6 +1132,11 @@ extern void intel_overlay_print_error_state(struct seq_file *m, struct intel_ove
#define POSTING_READ(reg) (void)I915_READ(reg)
#define POSTING_READ16(reg) (void)I915_READ16(reg)
#define I915_DEBUG_ENABLE_IO() (dev_priv->debug_flags |= I915_DEBUG_READ | \
I915_DEBUG_WRITE)
#define I915_DEBUG_DISABLE_IO() (dev_priv->debug_flags &= ~(I915_DEBUG_READ | \
I915_DEBUG_WRITE))
#define I915_VERBOSE 0
#define BEGIN_LP_RING(n) do { \