We have to do this manually. Somebody had a Great Idea.
Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/i915/i915_dma.c | 2 +-
drivers/gpu/drm/i915/i915_drv.c | 4 ++-
drivers/gpu/drm/i915/i915_drv.h | 3 +-
drivers/gpu/drm/i915/i915_gem.c | 23 ++++++++++++++++++++-
drivers/gpu/drm/i915/i915_gem_tiling.c | 16 +++++++++++++-
drivers/gpu/drm/i915/i915_reg.h | 33 ++++++++++++++++++++++++++++++++
6 files changed, 74 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 448d5b1..4c21c67 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1202,7 +1202,7 @@ static int i915_load_gem_init(struct drm_device *dev)
i915_gem_do_init(dev, 0, mappable_size, gtt_size - PAGE_SIZE);
mutex_lock(&dev->struct_mutex);
- ret = i915_gem_init_ringbuffer(dev);
+ ret = i915_gem_init_hw(dev);
mutex_unlock(&dev->struct_mutex);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 6dd219b..f12b43e 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -494,7 +494,7 @@ static int i915_drm_thaw(struct drm_device *dev)
mutex_lock(&dev->struct_mutex);
dev_priv->mm.suspended = 0;
- error = i915_gem_init_ringbuffer(dev);
+ error = i915_gem_init_hw(dev);
mutex_unlock(&dev->struct_mutex);
if (HAS_PCH_SPLIT(dev))
@@ -690,6 +690,8 @@ int i915_reset(struct drm_device *dev, u8 flags)
!dev_priv->mm.suspended) {
dev_priv->mm.suspended = 0;
+ i915_gem_init_swizzling(dev);
+
dev_priv->ring[RCS].init(&dev_priv->ring[RCS]);
if (HAS_BSD(dev))
dev_priv->ring[VCS].init(&dev_priv->ring[VCS]);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b46fac5..311a4e1 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1206,7 +1206,8 @@ int __must_check i915_gem_object_set_domain(struct drm_i915_gem_object *obj,
uint32_t read_domains,
uint32_t write_domain);
int __must_check i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj);
-int __must_check i915_gem_init_ringbuffer(struct drm_device *dev);
+int __must_check i915_gem_init_hw(struct drm_device *dev);
+void i915_gem_init_swizzling(struct drm_device *dev);
void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
void i915_gem_do_init(struct drm_device *dev,
unsigned long start,
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e995248..39459d2 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3744,12 +3744,31 @@ i915_gem_idle(struct drm_device *dev)
return 0;
}
+void i915_gem_init_swizzling(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+
+ if (INTEL_INFO(dev)->gen < 6 ||
+ dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_NONE)
+ return;
+
+ I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_SWZCTL);
+ if (IS_GEN6(dev))
+ I915_WRITE(ARB_MODE, ARB_MODE_ENABLE(ARB_MODE_SWIZZLE_SNB));
+ else
+ I915_WRITE(ARB_MODE, ARB_MODE_ENABLE(ARB_MODE_SWIZZLE_IVB));
+ I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |
+ DISP_TILE_SURFACE_SWIZZLING);
+
+}
int
-i915_gem_init_ringbuffer(struct drm_device *dev)
+i915_gem_init_hw(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
int ret;
+ i915_gem_init_swizzling(dev);
+
ret = intel_init_render_ring_buffer(dev);
if (ret)
return ret;
@@ -3805,7 +3824,7 @@ i915_gem_entervt_ioctl(struct drm_device *dev, void *data,
mutex_lock(&dev->struct_mutex);
dev_priv->mm.suspended = 0;
- ret = i915_gem_init_ringbuffer(dev);
+ ret = i915_gem_init_hw(dev);
if (ret != 0) {
mutex_unlock(&dev->struct_mutex);
return ret;
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index 861223b..af0a2fc 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -93,8 +93,20 @@ i915_gem_detect_bit_6_swizzle(struct drm_device *dev)
uint32_t swizzle_y = I915_BIT_6_SWIZZLE_UNKNOWN;
if (INTEL_INFO(dev)->gen >= 6) {
- swizzle_x = I915_BIT_6_SWIZZLE_NONE;
- swizzle_y = I915_BIT_6_SWIZZLE_NONE;
+ uint32_t dimm_c0, dimm_c1;
+ dimm_c0 = I915_READ(MAD_DIMM_C0);
+ dimm_c1 = I915_READ(MAD_DIMM_C1);
+ dimm_c0 &= MAD_DIMM_A_SIZE_MASK | MAD_DIMM_A_SIZE_MASK;
+ dimm_c1 &= MAD_DIMM_A_SIZE_MASK | MAD_DIMM_A_SIZE_MASK;
+ /* Enable swizzling when the channels are populated with
+ * identically sized dimms. */
+ if (dimm_c0 == dimm_c1) {
+ swizzle_x = I915_BIT_6_SWIZZLE_9_10;
+ swizzle_y = I915_BIT_6_SWIZZLE_9;
+ } else {
+ swizzle_x = I915_BIT_6_SWIZZLE_NONE;
+ swizzle_y = I915_BIT_6_SWIZZLE_NONE;
+ }
} else if (IS_GEN5(dev)) {
/* On Ironlake whatever DRAM config, GPU always do
* same swizzling setup.
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8a9f113..e810723 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -295,6 +295,12 @@
#define FENCE_REG_SANDYBRIDGE_0 0x100000
#define SANDYBRIDGE_FENCE_PITCH_SHIFT 32
+/* control register for cpu gtt access */
+#define TILECTL 0x101000
+#define TILECTL_SWZCTL (1 << 0)
+#define TILECTL_TLB_PREFETCH_DIS (1 << 2)
+#define TILECTL_BACKSNOOP_DIS (1 << 3)
+
/*
* Instruction and interrupt control regs
*/
@@ -318,6 +324,11 @@
#define RING_MAX_IDLE(base) ((base)+0x54)
#define RING_HWS_PGA(base) ((base)+0x80)
#define RING_HWS_PGA_GEN6(base) ((base)+0x2080)
+#define ARB_MODE 0x04030
+#define ARB_MODE_SWIZZLE_SNB (1<<4)
+#define ARB_MODE_SWIZZLE_IVB (1<<5)
+#define ARB_MODE_ENABLE(x) GFX_MODE_ENABLE(x)
+#define ARB_MODE_DISABLE(x) GFX_MODE_DISABLE(x)
#define RENDER_HWS_PGA_GEN7 (0x04080)
#define BSD_HWS_PGA_GEN7 (0x04180)
#define BLT_HWS_PGA_GEN7 (0x04280)
@@ -1034,6 +1045,28 @@
#define C0DRB3 0x10206
#define C1DRB3 0x10606
+/** snb MCH registers for reading the DRAM channel configuration */
+#define MAD_DIMM_C0 (MCHBAR_MIRROR_BASE_SNB + 0x5004)
+#define MAD_DIMM_C1 (MCHBAR_MIRROR_BASE_SNB + 0x5008)
+#define MAD_DIMM_C2 (MCHBAR_MIRROR_BASE_SNB + 0x500C)
+#define MAD_DIMM_ECC_MASK (0x3 << 24)
+#define MAD_DIMM_ECC_OFF (0x0 << 24)
+#define MAD_DIMM_ECC_IO_ON_LOGIC_OFF (0x1 << 24)
+#define MAD_DIMM_ECC_IO_OFF_LOGIC_ON (0x2 << 24)
+#define MAD_DIMM_ECC_ON (0x3 << 24)
+#define MAD_DIMM_ENH_INTERLEAVE (0x1 << 22)
+#define MAD_DIMM_RANK_INTERLEAVE (0x1 << 21)
+#define MAD_DIMM_B_WIDTH_X16 (0x1 << 20) /* X8 chips if unset */
+#define MAD_DIMM_A_WIDTH_X16 (0x1 << 19) /* X8 chips if unset */
+#define MAD_DIMM_B_DUAL_RANK (0x1 << 18)
+#define MAD_DIMM_A_DUAL_RANK (0x1 << 17)
+#define MAD_DIMM_A_SELECT (0x1 << 16)
+#define MAD_DIMM_B_SIZE_MASK (0xff << 8) /* in multiples of 256mb */
+#define MAD_DIMM_B_SIZE_SHIFT 8
+#define MAD_DIMM_A_SIZE_MASK (0xff << 0) /* in multiples of 256mb */
+#define MAD_DIMM_A_SIZE_SHIFT 8
+
+
/* Clocking configuration register */
#define CLKCFG 0x10c00
#define CLKCFG_FSB_400 (5 << 0) /* hrawclk 100 */
--
1.7.7.3
