panfrost: Add quirks system to cmdstream

Similarly to how it's already done in the compiler, add a way to express
differences between GPU models that need to be taken into account when
assembling the cmdstream.

Signed-off-by: Tomeu Vizoso <[email protected]>

1 files changed, 67 insertions, 0 deletions

diff --git a/src/panfrost/include/panfrost-quirks.h b/src/panfrost/include/panfrost-quirks.h
new file mode 100644
index 00000000000..83c7c84b020
--- /dev/null
+++ b/src/panfrost/include/panfrost-quirks.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2019 Collabora, Ltd.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef __PANFROST_QUIRKS_H
+#define __PANFROST_QUIRKS_H
+
+/* Model-specific quirks requiring workarounds/etc. Quirks may be errata
+ * requiring a workaround, or features. We're trying to be quirk-positive
+ * here; quirky is the best! */
+
+/* Whether the GPU lacks the capability for hierarchical tiling, without an
+ * "Advanced Tiling Unit", instead requiring a single bin size for the entire
+ * framebuffer be selected by the driver */
+
+#define MIDGARD_NO_HIER_TILING (1 << 0)
+
+/* Whether this GPU lacks native multiple render target support and accordingly
+ * needs SFBDs instead, with complex lowering with ES3 */
+
+#define MIDGARD_SFBD (1 << 1)
+
+static inline unsigned
+panfrost_get_quirks(unsigned gpu_id)
+{
+        switch (gpu_id) {
+        case 0x600:
+        case 0x620:
+                return MIDGARD_SFBD;
+
+        case 0x720:
+                return MIDGARD_SFBD | MIDGARD_NO_HIER_TILING;
+
+        case 0x820:
+        case 0x830:
+                return MIDGARD_NO_HIER_TILING;
+
+        case 0x750:
+        case 0x860:
+        case 0x880:
+                return 0;
+
+        default:
+                unreachable("Invalid Midgard GPU ID");
+        }
+}
+
+#endif