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1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2 
3 /*
4  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the next
14  * paragraph) shall be included in all copies or substantial portions of the
15  * Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23  * SOFTWARE.
24  *
25  * Authors:
26  *    Rob Clark <robclark@freedesktop.org>
27  */
28 
29 #ifndef FREEDRENO_RINGBUFFER_H_
30 #define FREEDRENO_RINGBUFFER_H_
31 
32 #include <freedreno_drmif.h>
33 
34 /* the ringbuffer object is not opaque so that OUT_RING() type stuff
35  * can be inlined.  Note that users should not make assumptions about
36  * the size of this struct.. more stuff will be added when we eventually
37  * have a kernel driver that can deal w/ reloc's..
38  */
39 
40 struct fd_ringbuffer_funcs;
41 struct fd_ringmarker;
42 
43 struct fd_ringbuffer {
44 	int size;
45 	uint32_t *cur, *end, *start, *last_start;
46 	struct fd_pipe *pipe;
47 	const struct fd_ringbuffer_funcs *funcs;
48 	uint32_t last_timestamp;
49 	struct fd_ringbuffer *parent;
50 };
51 
52 struct fd_ringbuffer * fd_ringbuffer_new(struct fd_pipe *pipe,
53 		uint32_t size);
54 void fd_ringbuffer_del(struct fd_ringbuffer *ring);
55 void fd_ringbuffer_set_parent(struct fd_ringbuffer *ring,
56 		struct fd_ringbuffer *parent);
57 void fd_ringbuffer_reset(struct fd_ringbuffer *ring);
58 int fd_ringbuffer_flush(struct fd_ringbuffer *ring);
59 /* in_fence_fd: -1 for no in-fence, else fence fd
60  * out_fence_fd: NULL for no output-fence requested, else ptr to return out-fence
61  */
62 int fd_ringbuffer_flush2(struct fd_ringbuffer *ring, int in_fence_fd,
63 		int *out_fence_fd);
64 void fd_ringbuffer_grow(struct fd_ringbuffer *ring, uint32_t ndwords);
65 uint32_t fd_ringbuffer_timestamp(struct fd_ringbuffer *ring);
66 
fd_ringbuffer_emit(struct fd_ringbuffer * ring,uint32_t data)67 static inline void fd_ringbuffer_emit(struct fd_ringbuffer *ring,
68 		uint32_t data)
69 {
70 	(*ring->cur++) = data;
71 }
72 
73 struct fd_reloc {
74 	struct fd_bo *bo;
75 #define FD_RELOC_READ             0x0001
76 #define FD_RELOC_WRITE            0x0002
77 	uint32_t flags;
78 	uint32_t offset;
79 	uint32_t or;
80 	int32_t  shift;
81 	uint32_t orhi;      /* used for a5xx+ */
82 };
83 
84 /* NOTE: relocs are 2 dwords on a5xx+ */
85 
86 void fd_ringbuffer_reloc2(struct fd_ringbuffer *ring, const struct fd_reloc *reloc);
87 will_be_deprecated void fd_ringbuffer_reloc(struct fd_ringbuffer *ring, const struct fd_reloc *reloc);
88 will_be_deprecated void fd_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
89 		struct fd_ringmarker *target, struct fd_ringmarker *end);
90 uint32_t fd_ringbuffer_cmd_count(struct fd_ringbuffer *ring);
91 uint32_t fd_ringbuffer_emit_reloc_ring_full(struct fd_ringbuffer *ring,
92 		struct fd_ringbuffer *target, uint32_t cmd_idx);
93 
94 will_be_deprecated struct fd_ringmarker * fd_ringmarker_new(struct fd_ringbuffer *ring);
95 will_be_deprecated void fd_ringmarker_del(struct fd_ringmarker *marker);
96 will_be_deprecated void fd_ringmarker_mark(struct fd_ringmarker *marker);
97 will_be_deprecated uint32_t fd_ringmarker_dwords(struct fd_ringmarker *start,
98 		struct fd_ringmarker *end);
99 will_be_deprecated int fd_ringmarker_flush(struct fd_ringmarker *marker);
100 
101 #endif /* FREEDRENO_RINGBUFFER_H_ */
102