Adding the ddb size into the devide info will avoid
platform checks while computing wm.

Suggested-by: Ander Conselvan de Oliveira 
<ander.conselvan.de.olive...@intel.com>
Signed-off-by: Deepak M <m.dee...@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h |  1 +
 drivers/gpu/drm/i915/i915_pci.c |  5 +++++
 drivers/gpu/drm/i915/intel_pm.c | 13 +------------
 3 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1e2dda8..4518ef3 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -710,6 +710,7 @@ struct intel_device_info {
        u8 ring_mask; /* Rings supported by the HW */
        u8 num_rings;
        DEV_INFO_FOR_EACH_FLAG(DEFINE_FLAG, SEP_SEMICOLON);
+       u16 ddb_size;
        /* Register offsets for the various display pipes and transcoders */
        int pipe_offsets[I915_MAX_TRANSCODERS];
        int trans_offsets[I915_MAX_TRANSCODERS];
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index d771870d..687c768 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -328,6 +328,7 @@ static const struct intel_device_info intel_skylake_info = {
        .gen = 9,
        .has_csr = 1,
        .has_guc = 1,
+       .ddb_size = 896,
 };
 
 static const struct intel_device_info intel_skylake_gt3_info = {
@@ -336,6 +337,7 @@ static const struct intel_device_info 
intel_skylake_gt3_info = {
        .gen = 9,
        .has_csr = 1,
        .has_guc = 1,
+       .ddb_size = 896,
        .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
@@ -358,6 +360,7 @@ static const struct intel_device_info intel_broxton_info = {
        .has_hw_contexts = 1,
        .has_logical_ring_contexts = 1,
        .has_guc = 1,
+       .ddb_size = 512,
        GEN_DEFAULT_PIPEOFFSETS,
        IVB_CURSOR_OFFSETS,
        BDW_COLORS,
@@ -369,6 +372,7 @@ static const struct intel_device_info intel_kabylake_info = 
{
        .gen = 9,
        .has_csr = 1,
        .has_guc = 1,
+       .ddb_size = 896,
 };
 
 static const struct intel_device_info intel_kabylake_gt3_info = {
@@ -377,6 +381,7 @@ static const struct intel_device_info 
intel_kabylake_gt3_info = {
        .gen = 9,
        .has_csr = 1,
        .has_guc = 1,
+       .ddb_size = 896,
        .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
 };
 
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 6af438f..7eeb73b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -2853,13 +2853,6 @@ bool ilk_disable_lp_wm(struct drm_device *dev)
        return _ilk_disable_lp_wm(dev_priv, WM_DIRTY_LP_ALL);
 }
 
-/*
- * On gen9, we need to allocate Display Data Buffer (DDB) portions to the
- * different active planes.
- */
-
-#define SKL_DDB_SIZE           896     /* in blocks */
-#define BXT_DDB_SIZE           512
 #define SKL_SAGV_BLOCK_TIME    30 /* µs */
 
 /*
@@ -3057,11 +3050,7 @@ skl_ddb_get_pipe_allocation_limits(struct drm_device 
*dev,
        else
                *num_active = hweight32(dev_priv->active_crtcs);
 
-       if (IS_BROXTON(dev))
-               ddb_size = BXT_DDB_SIZE;
-       else
-               ddb_size = SKL_DDB_SIZE;
-
+       ddb_size = INTEL_INFO(dev_priv)->ddb_size;
        ddb_size -= 4; /* 4 blocks for bypass path allocation */
 
        /*
-- 
1.9.1

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