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+/* wld: intel/batch.h
+ *
+ * Copyright (c) 2013, 2014 Michael Forney
+ *
+ * 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 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 WLD_INTEL_BATCH_H
+#define WLD_INTEL_BATCH_H
+
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <intel_bufmgr.h>
+
+#define INTEL_BATCH_MAX_COMMANDS (1 << 13)
+#define INTEL_BATCH_RESERVED_COMMANDS 2
+#define INTEL_BATCH_SIZE (INTEL_BATCH_MAX_COMMANDS << 2)
+
+enum intel_batch_result
+{
+ INTEL_BATCH_SUCCESS,
+ INTEL_BATCH_NO_SPACE
+};
+
+struct intel_device_info
+{
+ int gen;
+};
+
+struct intel_batch
+{
+ const struct intel_device_info * device_info;
+ drm_intel_bo * bo;
+ uint32_t commands[INTEL_BATCH_MAX_COMMANDS];
+ uint32_t command_count;
+};
+
+bool intel_batch_initialize(struct intel_batch * batch,
+ drm_intel_bufmgr * bufmgr);
+
+void intel_batch_finalize(struct intel_batch * batch);
+
+void intel_batch_flush(struct intel_batch * batch);
+
+static inline uint32_t intel_batch_check_space(struct intel_batch * batch,
+ uint32_t size)
+{
+ return (INTEL_BATCH_MAX_COMMANDS - INTEL_BATCH_RESERVED_COMMANDS
+ - batch->command_count) >= size;
+}
+
+static inline void intel_batch_ensure_space(struct intel_batch * batch, uint32_t size)
+{
+ if (!intel_batch_check_space(batch, size))
+ intel_batch_flush(batch);
+}
+
+static inline void intel_batch_add_dword(struct intel_batch * batch,
+ uint32_t dword)
+{
+ batch->commands[batch->command_count++] = dword;
+}
+
+static inline void intel_batch_add_dwords_va(struct intel_batch * batch,
+ uint32_t count, va_list dwords)
+{
+ while (count--)
+ intel_batch_add_dword(batch, va_arg(dwords, uint32_t));
+}
+
+static inline void intel_batch_add_dwords(struct intel_batch * batch,
+ uint32_t count, ...)
+{
+ va_list dwords;
+ va_start(dwords, count);
+ intel_batch_add_dwords_va(batch, count, dwords);
+ va_end(dwords);
+}
+
+static inline uint32_t intel_batch_offset(struct intel_batch * batch,
+ uint32_t command_index)
+{
+ return (batch->command_count + command_index) << 2;
+}
+
+#endif
+