1 files changed, 137 insertions, 0 deletions
diff --git a/src/panfrost/encoder/pan_bo.h b/src/panfrost/encoder/pan_bo.h
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+++ b/src/panfrost/encoder/pan_bo.h
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+/*
+ * © Copyright 2019 Alyssa Rosenzweig
+ * © Copyright 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 __PAN_BO_H__
+#define __PAN_BO_H__
+
+#include <panfrost-misc.h>
+#include "util/list.h"
+#include "pan_device.h"
+
+/* Flags for allocated memory */
+
+/* This memory region is executable */
+#define PAN_BO_EXECUTE            (1 << 0)
+
+/* This memory region should be lazily allocated and grow-on-page-fault. Must
+ * be used in conjunction with INVISIBLE */
+#define PAN_BO_GROWABLE           (1 << 1)
+
+/* This memory region should not be mapped to the CPU */
+#define PAN_BO_INVISIBLE          (1 << 2)
+
+/* This memory region will be used for varyings and needs to have the cache
+ * bits twiddled accordingly */
+#define PAN_BO_COHERENT_LOCAL     (1 << 3)
+
+/* This region may not be used immediately and will not mmap on allocate
+ * (semantically distinct from INVISIBLE, which cannot never be mmaped) */
+#define PAN_BO_DELAY_MMAP         (1 << 4)
+
+/* Some BOs shouldn't be returned back to the reuse BO cache, use this flag to
+ * let the BO logic know about this contraint. */
+#define PAN_BO_DONT_REUSE         (1 << 5)
+
+/* BO has been imported */
+#define PAN_BO_IMPORTED           (1 << 6)
+
+/* BO has been exported */
+#define PAN_BO_EXPORTED           (1 << 7)
+
+/* GPU access flags */
+
+/* BO is either shared (can be accessed by more than one GPU batch) or private
+ * (reserved by a specific GPU job). */
+#define PAN_BO_ACCESS_PRIVATE         (0 << 0)
+#define PAN_BO_ACCESS_SHARED          (1 << 0)
+
+/* BO is being read/written by the GPU */
+#define PAN_BO_ACCESS_READ            (1 << 1)
+#define PAN_BO_ACCESS_WRITE           (1 << 2)
+#define PAN_BO_ACCESS_RW              (PAN_BO_ACCESS_READ | PAN_BO_ACCESS_WRITE)
+
+/* BO is accessed by the vertex/tiler job. */
+#define PAN_BO_ACCESS_VERTEX_TILER    (1 << 3)
+
+/* BO is accessed by the fragment job. */
+#define PAN_BO_ACCESS_FRAGMENT        (1 << 4)
+
+struct panfrost_bo {
+        /* Must be first for casting */
+        struct list_head bucket_link;
+
+        /* Used to link the BO to the BO cache LRU list. */
+        struct list_head lru_link;
+
+        /* Store the time this BO was use last, so the BO cache logic can evict
+         * stale BOs.
+         */
+        time_t last_used;
+
+        /* Atomic reference count */
+        int32_t refcnt;
+
+        struct panfrost_device *dev;
+
+        /* Mapping for the entire object (all levels) */
+        uint8_t *cpu;
+
+        /* GPU address for the object */
+        mali_ptr gpu;
+
+        /* Size of all entire trees */
+        size_t size;
+
+        int gem_handle;
+
+        uint32_t flags;
+
+        /* Combination of PAN_BO_ACCESS_{READ,WRITE} flags encoding pending
+         * GPU accesses to this BO. Useful to avoid calling the WAIT_BO ioctl
+         * when the BO is idle.
+         */
+        uint32_t gpu_access;
+};
+
+bool
+panfrost_bo_wait(struct panfrost_bo *bo, int64_t timeout_ns,
+                 uint32_t access_type);
+void
+panfrost_bo_reference(struct panfrost_bo *bo);
+void
+panfrost_bo_unreference(struct panfrost_bo *bo);
+struct panfrost_bo *
+panfrost_bo_create(struct panfrost_device *dev, size_t size,
+                   uint32_t flags);
+void
+panfrost_bo_mmap(struct panfrost_bo *bo);
+struct panfrost_bo *
+panfrost_bo_import(struct panfrost_device *dev, int fd);
+int
+panfrost_bo_export(struct panfrost_bo *bo);
+void
+panfrost_bo_cache_evict_all(struct panfrost_device *dev);
+
+#endif /* __PAN_BO_H__ */