drm/i915: Extract common MMIO lines

Just to make the churn and code duplication in upcoming patches a bit
less, turn code which is common to all GEN MMIO functions into a macro.

v2: Fix typo in subject

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 8d032ae..b8b6597 100644 (file)
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -341,12 +341,20 @@ hsw_unclaimed_reg_check(struct drm_i915_private *dev_priv, u32 reg)
        }
 }
 
+#define REG_READ_HEADER(x) \
+       unsigned long irqflags; \
+       u##x val = 0; \
+       spin_lock_irqsave(&dev_priv->uncore.lock, irqflags)
+
+#define REG_READ_FOOTER \
+       spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); \
+       trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
+       return val
+
 #define __i915_read(x) \
 static u##x \
 i915_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
-       unsigned long irqflags; \
-       u##x val = 0; \
-       spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); \
+       REG_READ_HEADER(x); \
        if (dev_priv->info->gen == 5) \
                ilk_dummy_write(dev_priv); \
        if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
@@ -358,9 +366,7 @@ i915_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \
        } else { \
                val = __raw_i915_read##x(dev_priv, reg); \
        } \
-       spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); \
-       trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
-       return val; \
+       REG_READ_FOOTER; \
 }
 
 __i915_read(8)
@@ -368,14 +374,19 @@ __i915_read(16)
 __i915_read(32)
 __i915_read(64)
 #undef __i915_read
+#undef REG_READ_FOOTER
+#undef REG_READ_HEADER
+
+#define REG_WRITE_HEADER \
+       unsigned long irqflags; \
+       trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
+       spin_lock_irqsave(&dev_priv->uncore.lock, irqflags)
 
 #define __i915_write(x) \
 static void \
 i915_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \
-       unsigned long irqflags; \
        u32 __fifo_ret = 0; \
-       trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
-       spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); \
+       REG_WRITE_HEADER; \
        if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
                __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \
        } \
@@ -394,6 +405,7 @@ __i915_write(16)
 __i915_write(32)
 __i915_write(64)
 #undef __i915_write
+#undef REG_WRITE_HEADER
 
 void intel_uncore_init(struct drm_device *dev)
 {