panfrost: Initial stub for Panfrost driver

This patch adds an initial stub for the Gallium driver, containing
simple screen functions and the majority of the driver headers but no
actual functionality. It further adds the winsys glue for linking in
this stub driver via kmsro on Rockchip/Amlogic boards.

Signed-off-by: Alyssa Rosenzweig <[email protected]>
Acked-by: Jason Ekstrand <[email protected]>
Acked-by: Rob Clark <[email protected]>
Acked-by: Eric Anholt <[email protected]>
Acked-by: Emil Velikov <[email protected]>

1 files changed, 85 insertions, 0 deletions

diff --git a/src/gallium/drivers/panfrost/pan_resource.h b/src/gallium/drivers/panfrost/pan_resource.h
new file mode 100644
index 00000000000..78baffbd1b2
--- /dev/null
+++ b/src/gallium/drivers/panfrost/pan_resource.h
@@ -0,0 +1,85 @@
+/*
+ * © Copyright2018-2019 Alyssa Rosenzweig
+ *
+ * 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 PAN_RESOURCE_H
+#define PAN_RESOURCE_H
+
+#include <panfrost-job.h>
+#include "pan_screen.h"
+#include "pan_allocate.h"
+#include <drm.h>
+
+struct panfrost_bo {
+        /* Address to the BO in question */
+
+        uint8_t *cpu[MAX_MIP_LEVELS];
+
+        /* Not necessarily a GPU mapping of cpu! In case of texture tiling, gpu
+         * points to the GPU-side, tiled texture, while cpu points to the
+         * CPU-side, untiled texture from mesa */
+
+        mali_ptr gpu[MAX_MIP_LEVELS];
+
+        /* Memory entry corresponding to gpu above */
+        struct panfrost_memory_entry *entry[MAX_MIP_LEVELS];
+
+        /* Set for tiled, clear for linear. */
+        bool tiled;
+
+        /* Is something other than level 0 ever written? */
+        bool is_mipmap;
+
+        /* If AFBC is enabled for this resource, we lug around an AFBC
+         * metadata buffer as well. The actual AFBC resource is also in
+         * afbc_slab (only defined for AFBC) at position afbc_main_offset */
+
+        bool has_afbc;
+        struct panfrost_memory afbc_slab;
+        int afbc_metadata_size;
+
+        /* Similarly for TE */
+        bool has_checksum;
+        struct panfrost_memory checksum_slab;
+        int checksum_stride;
+};
+
+struct panfrost_resource {
+        struct pipe_resource base;
+
+        struct panfrost_bo *bo;
+        struct renderonly_scanout *scanout;
+};
+
+static inline struct panfrost_resource *
+pan_resource(struct pipe_resource *p)
+{
+   return (struct panfrost_resource *)p;
+}
+
+void panfrost_resource_screen_init(struct panfrost_screen *screen);
+
+void panfrost_resource_context_init(struct pipe_context *pctx);
+
+#endif /* PAN_RESOURCE_H */