[Intel-gfx] [PATCH v2 04/43] drm/i915: Parametrize fence registers
ville.syrjala at linux.intel.com
ville.syrjala at linux.intel.com
Mon Sep 21 08:05:14 PDT 2015
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
v2: Hide the 945 vs. rest of gen2/3 difference in the macro
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/i915_gem_fence.c | 41 +++++++++++++++--------------------
drivers/gpu/drm/i915/i915_gpu_error.c | 21 +++++++-----------
drivers/gpu/drm/i915/i915_reg.h | 18 ++++++++++-----
3 files changed, 39 insertions(+), 41 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_fence.c b/drivers/gpu/drm/i915/i915_gem_fence.c
index 6077dff..1cbfd5b 100644
--- a/drivers/gpu/drm/i915/i915_gem_fence.c
+++ b/drivers/gpu/drm/i915/i915_gem_fence.c
@@ -59,19 +59,19 @@ static void i965_write_fence_reg(struct drm_device *dev, int reg,
struct drm_i915_gem_object *obj)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- int fence_reg;
+ int fence_reg_lo, fence_reg_hi;
int fence_pitch_shift;
if (INTEL_INFO(dev)->gen >= 6) {
- fence_reg = FENCE_REG_SANDYBRIDGE_0;
- fence_pitch_shift = SANDYBRIDGE_FENCE_PITCH_SHIFT;
+ fence_reg_lo = FENCE_REG_GEN6_LO(reg);
+ fence_reg_hi = FENCE_REG_GEN6_HI(reg);
+ fence_pitch_shift = GEN6_FENCE_PITCH_SHIFT;
} else {
- fence_reg = FENCE_REG_965_0;
+ fence_reg_lo = FENCE_REG_965_LO(reg);
+ fence_reg_hi = FENCE_REG_965_HI(reg);
fence_pitch_shift = I965_FENCE_PITCH_SHIFT;
}
- fence_reg += reg * 8;
-
/* To w/a incoherency with non-atomic 64-bit register updates,
* we split the 64-bit update into two 32-bit writes. In order
* for a partial fence not to be evaluated between writes, we
@@ -81,8 +81,8 @@ static void i965_write_fence_reg(struct drm_device *dev, int reg,
* For extra levels of paranoia, we make sure each step lands
* before applying the next step.
*/
- I915_WRITE(fence_reg, 0);
- POSTING_READ(fence_reg);
+ I915_WRITE(fence_reg_lo, 0);
+ POSTING_READ(fence_reg_lo);
if (obj) {
u32 size = i915_gem_obj_ggtt_size(obj);
@@ -103,14 +103,14 @@ static void i965_write_fence_reg(struct drm_device *dev, int reg,
val |= 1 << I965_FENCE_TILING_Y_SHIFT;
val |= I965_FENCE_REG_VALID;
- I915_WRITE(fence_reg + 4, val >> 32);
- POSTING_READ(fence_reg + 4);
+ I915_WRITE(fence_reg_hi, val >> 32);
+ POSTING_READ(fence_reg_hi);
- I915_WRITE(fence_reg + 0, val);
- POSTING_READ(fence_reg);
+ I915_WRITE(fence_reg_lo, val);
+ POSTING_READ(fence_reg_lo);
} else {
- I915_WRITE(fence_reg + 4, 0);
- POSTING_READ(fence_reg + 4);
+ I915_WRITE(fence_reg_hi, 0);
+ POSTING_READ(fence_reg_hi);
}
}
@@ -149,13 +149,8 @@ static void i915_write_fence_reg(struct drm_device *dev, int reg,
} else
val = 0;
- if (reg < 8)
- reg = FENCE_REG_830_0 + reg * 4;
- else
- reg = FENCE_REG_945_8 + (reg - 8) * 4;
-
- I915_WRITE(reg, val);
- POSTING_READ(reg);
+ I915_WRITE(FENCE_REG(reg), val);
+ POSTING_READ(FENCE_REG(reg));
}
static void i830_write_fence_reg(struct drm_device *dev, int reg,
@@ -186,8 +181,8 @@ static void i830_write_fence_reg(struct drm_device *dev, int reg,
} else
val = 0;
- I915_WRITE(FENCE_REG_830_0 + reg * 4, val);
- POSTING_READ(FENCE_REG_830_0 + reg * 4);
+ I915_WRITE(FENCE_REG(reg), val);
+ POSTING_READ(FENCE_REG(reg));
}
inline static bool i915_gem_object_needs_mb(struct drm_i915_gem_object *obj)
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 3379f9c..3b574c2 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -786,20 +786,15 @@ static void i915_gem_record_fences(struct drm_device *dev,
int i;
if (IS_GEN3(dev) || IS_GEN2(dev)) {
- for (i = 0; i < 8; i++)
- error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4));
- if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
- for (i = 0; i < 8; i++)
- error->fence[i+8] = I915_READ(FENCE_REG_945_8 +
- (i * 4));
- } else if (IS_GEN5(dev) || IS_GEN4(dev))
- for (i = 0; i < 16; i++)
- error->fence[i] = I915_READ64(FENCE_REG_965_0 +
- (i * 8));
- else if (INTEL_INFO(dev)->gen >= 6)
for (i = 0; i < dev_priv->num_fence_regs; i++)
- error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 +
- (i * 8));
+ error->fence[i] = I915_READ(FENCE_REG(i));
+ } else if (IS_GEN5(dev) || IS_GEN4(dev)) {
+ for (i = 0; i < dev_priv->num_fence_regs; i++)
+ error->fence[i] = I915_READ64(FENCE_REG_965_LO(i));
+ } else if (INTEL_INFO(dev)->gen >= 6) {
+ for (i = 0; i < dev_priv->num_fence_regs; i++)
+ error->fence[i] = I915_READ64(FENCE_REG_GEN6_LO(i));
+ }
}
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 44cedbf..8133c7e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1436,9 +1436,15 @@ enum skl_disp_power_wells {
/*
* Fence registers
+ * [0-7] @ 0x2000 gen2,gen3
+ * [8-15] @ 0x3000 945,g33,pnv
+ *
+ * [0-15] @ 0x3000 gen4,gen5
+ *
+ * [0-15] @ 0x100000 gen6,vlv,chv
+ * [0-31] @ 0x100000 gen7+
*/
-#define FENCE_REG_830_0 0x2000
-#define FENCE_REG_945_8 0x3000
+#define FENCE_REG(i) (0x2000 + (((i) & 8) << 9) + ((i) & 7) * 4)
#define I830_FENCE_START_MASK 0x07f80000
#define I830_FENCE_TILING_Y_SHIFT 12
#define I830_FENCE_SIZE_BITS(size) ((ffs((size) >> 19) - 1) << 8)
@@ -1451,14 +1457,16 @@ enum skl_disp_power_wells {
#define I915_FENCE_START_MASK 0x0ff00000
#define I915_FENCE_SIZE_BITS(size) ((ffs((size) >> 20) - 1) << 8)
-#define FENCE_REG_965_0 0x03000
+#define FENCE_REG_965_LO(i) (0x03000 + (i) * 8)
+#define FENCE_REG_965_HI(i) (0x03000 + (i) * 8 + 4)
#define I965_FENCE_PITCH_SHIFT 2
#define I965_FENCE_TILING_Y_SHIFT 1
#define I965_FENCE_REG_VALID (1<<0)
#define I965_FENCE_MAX_PITCH_VAL 0x0400
-#define FENCE_REG_SANDYBRIDGE_0 0x100000
-#define SANDYBRIDGE_FENCE_PITCH_SHIFT 32
+#define FENCE_REG_GEN6_LO(i) (0x100000 + (i) * 8)
+#define FENCE_REG_GEN6_HI(i) (0x100000 + (i) * 8 + 4)
+#define GEN6_FENCE_PITCH_SHIFT 32
#define GEN7_FENCE_MAX_PITCH_VAL 0x0800
--
2.4.6
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