summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/i915/i915_winsys.h
blob: e915a886c9b7196adcbf58a659ae3e683a39cf8a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
/**************************************************************************
 *
 * Copyright © 2009 Jakob Bornecrantz
 *
 * 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 I915_WINSYS_H
#define I915_WINSYS_H

#include "pipe/p_compiler.h"

struct i915_winsys;
struct i915_winsys_buffer;
struct i915_winsys_batchbuffer;
struct pipe_resource;
struct pipe_fence_handle;
struct winsys_handle;

enum i915_winsys_buffer_usage
{
   /* use on textures */
   I915_USAGE_RENDER    = 0x01,
   I915_USAGE_SAMPLER   = 0x02,
   I915_USAGE_2D_TARGET = 0x04,
   I915_USAGE_2D_SOURCE = 0x08,
   /* use on vertex */
   I915_USAGE_VERTEX    = 0x10
};

enum i915_winsys_buffer_type
{
   I915_NEW_TEXTURE,
   I915_NEW_SCANOUT, /**< a texture used for scanning out from */
   I915_NEW_VERTEX
};

/* These need to be in sync with the definitions of libdrm-intel! */
enum i915_winsys_buffer_tile
{
   I915_TILE_NONE,
   I915_TILE_X,
   I915_TILE_Y
};

struct i915_winsys_batchbuffer {

   struct i915_winsys *iws;

   /**
    * Values exported to speed up the writing the batchbuffer,
    * instead of having to go trough a accesor function for
    * each dword written.
    */
   /*{@*/
   uint8_t *map;
   uint8_t *ptr;
   size_t size;

   size_t relocs;
   size_t max_relocs;
   /*@}*/
};

struct i915_winsys {

   unsigned pci_id; /**< PCI ID for the device */

   /**
    * Batchbuffer functions.
    */
   /*@{*/
   /**
    * Create a new batchbuffer.
    */
   struct i915_winsys_batchbuffer *
      (*batchbuffer_create)(struct i915_winsys *iws);

   /**
    * Emit a relocation to a buffer.
    * Target position in batchbuffer is the same as ptr.
    *
    * @batch
    * @reloc buffer address to be inserted into target.
    * @usage how is the hardware going to use the buffer.
    * @offset add this to the reloc buffers address
    * @target buffer where to write the address, null for batchbuffer.
    * @fenced relocation needs a fence.
    */
   int (*batchbuffer_reloc)(struct i915_winsys_batchbuffer *batch,
                            struct i915_winsys_buffer *reloc,
                            enum i915_winsys_buffer_usage usage,
                            unsigned offset, boolean fenced);

   /**
    * Flush a bufferbatch.
    */
   void (*batchbuffer_flush)(struct i915_winsys_batchbuffer *batch,
                             struct pipe_fence_handle **fence);

   /**
    * Destroy a batchbuffer.
    */
   void (*batchbuffer_destroy)(struct i915_winsys_batchbuffer *batch);
   /*@}*/


   /**
    * Buffer functions.
    */
   /*@{*/
   /**
    * Create a buffer.
    */
   struct i915_winsys_buffer *
      (*buffer_create)(struct i915_winsys *iws,
                       unsigned size,
                       enum i915_winsys_buffer_type type);

   /**
    * Create a tiled buffer.
    *
    * *stride, height are in bytes. The winsys tries to allocate the buffer with
    * the tiling mode provide in *tiling. If tiling is no possible, *tiling will
    * be set to I915_TILE_NONE. The calculated stride (incorporateing hw/kernel
    * requirements) is always returned in *stride.
    */
   struct i915_winsys_buffer *
      (*buffer_create_tiled)(struct i915_winsys *iws,
                             unsigned *stride, unsigned height,
                             enum i915_winsys_buffer_tile *tiling,
                             enum i915_winsys_buffer_type type);

   /**
    * Creates a buffer from a handle.
    * Used to implement pipe_screen::resource_from_handle.
    * Also provides the stride information needed for the
    * texture via the stride argument.
    */
   struct i915_winsys_buffer *
      (*buffer_from_handle)(struct i915_winsys *iws,
                            struct winsys_handle *whandle,
                            enum i915_winsys_buffer_tile *tiling,
                            unsigned *stride);

   /**
    * Used to implement pipe_screen::resource_get_handle.
    * The winsys might need the stride information.
    */
   boolean (*buffer_get_handle)(struct i915_winsys *iws,
                                struct i915_winsys_buffer *buffer,
                                struct winsys_handle *whandle,
                                unsigned stride);

   /**
    * Map a buffer.
    */
   void *(*buffer_map)(struct i915_winsys *iws,
                       struct i915_winsys_buffer *buffer,
                       boolean write);

   /**
    * Unmap a buffer.
    */
   void (*buffer_unmap)(struct i915_winsys *iws,
                        struct i915_winsys_buffer *buffer);

   /**
    * Write to a buffer.
    *
    * Arguments follows pipe_buffer_write.
    */
   int (*buffer_write)(struct i915_winsys *iws,
                       struct i915_winsys_buffer *dst,
                       size_t offset,
                       size_t size,
                       const void *data);

   void (*buffer_destroy)(struct i915_winsys *iws,
                          struct i915_winsys_buffer *buffer);
   /*@}*/


   /**
    * Fence functions.
    */
   /*@{*/
   /**
    * Reference fence and set ptr to fence.
    */
   void (*fence_reference)(struct i915_winsys *iws,
                           struct pipe_fence_handle **ptr,
                           struct pipe_fence_handle *fence);

   /**
    * Check if a fence has finished.
    */
   int (*fence_signalled)(struct i915_winsys *iws,
                          struct pipe_fence_handle *fence);

   /**
    * Wait on a fence to finish.
    */
   int (*fence_finish)(struct i915_winsys *iws,
                       struct pipe_fence_handle *fence);
   /*@}*/


   /**
    * Destroy the winsys.
    */
   void (*destroy)(struct i915_winsys *iws);
};

#endif