i915: Enable Render Buffer Compression for Gen-11

Enable Render Buffer Compression only for Gen 11

BUG=b:161520827
TEST=Boot target board to UI

Signed-off-by: Binu R S <binu.r.s@intel.com>
Change-Id: I40739732e915a516837a2c7530b4a81679597efe
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/2306853
Reviewed-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Tested-by: Mohanram Meenakshisundaram <mohanram.meenakshisundaram@intel.com>
Commit-Queue: Justin TerAvest <teravest@chromium.org>

diff --git a/i915.c b/i915.c
index bccc0b5..e8c4909 100644 (file)
--- a/i915.c
+++ b/i915.c
@@ -34,23 +34,53 @@ static const uint32_t render_formats[] = { DRM_FORMAT_ABGR16161616F };
 static const uint32_t texture_only_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_NV12, DRM_FORMAT_P010,
                                                 DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID };
 
+static const uint64_t gen_modifier_order[] = { I915_FORMAT_MOD_Y_TILED, I915_FORMAT_MOD_X_TILED,
+                                              DRM_FORMAT_MOD_LINEAR };
+
+static const uint64_t gen11_modifier_order[] = { I915_FORMAT_MOD_Y_TILED_CCS,
+                                                I915_FORMAT_MOD_Y_TILED, I915_FORMAT_MOD_X_TILED,
+                                                DRM_FORMAT_MOD_LINEAR };
+
+struct modifier_support_t {
+       const uint64_t *order;
+       uint32_t count;
+};
+
 struct i915_device {
        uint32_t gen;
        int32_t has_llc;
+       struct modifier_support_t modifier;
 };
 
 static uint32_t i915_get_gen(int device_id)
 {
        const uint16_t gen3_ids[] = { 0x2582, 0x2592, 0x2772, 0x27A2, 0x27AE,
                                      0x29C2, 0x29B2, 0x29D2, 0xA001, 0xA011 };
+       const uint16_t gen11_ids[] = { 0x4E71, 0x4E61, 0x4E51, 0x4E55, 0x4E57 };
+
        unsigned i;
        for (i = 0; i < ARRAY_SIZE(gen3_ids); i++)
                if (gen3_ids[i] == device_id)
                        return 3;
+       /* Gen 11 */
+       for (i = 0; i < ARRAY_SIZE(gen11_ids); i++)
+               if (gen11_ids[i] == device_id)
+                       return 11;
 
        return 4;
 }
 
+static void i915_get_modifier_order(struct i915_device *i915)
+{
+       if (i915->gen == 11) {
+               i915->modifier.order = gen11_modifier_order;
+               i915->modifier.count = ARRAY_SIZE(gen11_modifier_order);
+       } else {
+               i915->modifier.order = gen_modifier_order;
+               i915->modifier.count = ARRAY_SIZE(gen_modifier_order);
+       }
+}
+
 static uint64_t unset_flags(uint64_t current_flags, uint64_t mask)
 {
        uint64_t value = current_flags & ~mask;
@@ -221,6 +251,7 @@ static int i915_init(struct driver *drv)
        }
 
        i915->gen = i915_get_gen(device_id);
+       i915_get_modifier_order(i915);
 
        memset(&get_param, 0, sizeof(get_param));
        get_param.param = I915_PARAM_HAS_LLC;
@@ -270,18 +301,13 @@ static int i915_bo_from_format(struct bo *bo, uint32_t width, uint32_t height, u
 static int i915_bo_compute_metadata(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
                                    uint64_t use_flags, const uint64_t *modifiers, uint32_t count)
 {
-       static const uint64_t modifier_order[] = {
-               I915_FORMAT_MOD_Y_TILED,
-               I915_FORMAT_MOD_X_TILED,
-               DRM_FORMAT_MOD_LINEAR,
-       };
        uint64_t modifier;
        struct i915_device *i915 = bo->drv->priv;
        bool huge_bo = (i915->gen <= 11) && (width > 4096);
 
        if (modifiers) {
                modifier =
-                   drv_pick_modifier(modifiers, count, modifier_order, ARRAY_SIZE(modifier_order));
+                   drv_pick_modifier(modifiers, count, i915->modifier.order, i915->modifier.count);
        } else {
                struct combination *combo = drv_get_combination(bo->drv, format, use_flags);
                if (!combo)