1
2 #include "state_tracker/drm_driver.h"
3 #include "i915_drm_winsys.h"
4 #include "util/u_memory.h"
5
6 #include "i915_drm.h"
7
i915_drm_type_to_name(enum i915_winsys_buffer_type type)8 static char *i915_drm_type_to_name(enum i915_winsys_buffer_type type)
9 {
10 char *name;
11
12 if (type == I915_NEW_TEXTURE) {
13 name = "gallium3d_texture";
14 } else if (type == I915_NEW_VERTEX) {
15 name = "gallium3d_vertex";
16 } else if (type == I915_NEW_SCANOUT) {
17 name = "gallium3d_scanout";
18 } else {
19 assert(0);
20 name = "gallium3d_unknown";
21 }
22
23 return name;
24 }
25
26 static struct i915_winsys_buffer *
i915_drm_buffer_create(struct i915_winsys * iws,unsigned size,enum i915_winsys_buffer_type type)27 i915_drm_buffer_create(struct i915_winsys *iws,
28 unsigned size,
29 enum i915_winsys_buffer_type type)
30 {
31 struct i915_drm_buffer *buf = CALLOC_STRUCT(i915_drm_buffer);
32 struct i915_drm_winsys *idws = i915_drm_winsys(iws);
33
34 if (!buf)
35 return NULL;
36
37 buf->magic = 0xDEAD1337;
38 buf->flinked = FALSE;
39 buf->flink = 0;
40
41 buf->bo = drm_intel_bo_alloc(idws->gem_manager,
42 i915_drm_type_to_name(type), size, 0);
43
44 if (!buf->bo)
45 goto err;
46
47 return (struct i915_winsys_buffer *)buf;
48
49 err:
50 assert(0);
51 FREE(buf);
52 return NULL;
53 }
54
55 static struct i915_winsys_buffer *
i915_drm_buffer_create_tiled(struct i915_winsys * iws,unsigned * stride,unsigned height,enum i915_winsys_buffer_tile * tiling,enum i915_winsys_buffer_type type)56 i915_drm_buffer_create_tiled(struct i915_winsys *iws,
57 unsigned *stride, unsigned height,
58 enum i915_winsys_buffer_tile *tiling,
59 enum i915_winsys_buffer_type type)
60 {
61 struct i915_drm_buffer *buf = CALLOC_STRUCT(i915_drm_buffer);
62 struct i915_drm_winsys *idws = i915_drm_winsys(iws);
63 unsigned long pitch = 0;
64 uint32_t tiling_mode = *tiling;
65
66 if (!buf)
67 return NULL;
68
69 buf->magic = 0xDEAD1337;
70 buf->flinked = FALSE;
71 buf->flink = 0;
72
73 buf->bo = drm_intel_bo_alloc_tiled(idws->gem_manager,
74 i915_drm_type_to_name(type),
75 *stride, height, 1,
76 &tiling_mode, &pitch, 0);
77
78 if (!buf->bo)
79 goto err;
80
81 *stride = pitch;
82 *tiling = tiling_mode;
83 return (struct i915_winsys_buffer *)buf;
84
85 err:
86 assert(0);
87 FREE(buf);
88 return NULL;
89 }
90
91 static struct i915_winsys_buffer *
i915_drm_buffer_from_handle(struct i915_winsys * iws,struct winsys_handle * whandle,enum i915_winsys_buffer_tile * tiling,unsigned * stride)92 i915_drm_buffer_from_handle(struct i915_winsys *iws,
93 struct winsys_handle *whandle,
94 enum i915_winsys_buffer_tile *tiling,
95 unsigned *stride)
96 {
97 struct i915_drm_winsys *idws = i915_drm_winsys(iws);
98 struct i915_drm_buffer *buf = CALLOC_STRUCT(i915_drm_buffer);
99 uint32_t tile = 0, swizzle = 0;
100
101 if (!buf)
102 return NULL;
103
104 buf->magic = 0xDEAD1337;
105 buf->bo = drm_intel_bo_gem_create_from_name(idws->gem_manager, "gallium3d_from_handle", whandle->handle);
106 buf->flinked = TRUE;
107 buf->flink = whandle->handle;
108
109 if (!buf->bo)
110 goto err;
111
112 drm_intel_bo_get_tiling(buf->bo, &tile, &swizzle);
113
114 *stride = whandle->stride;
115 *tiling = tile;
116
117 return (struct i915_winsys_buffer *)buf;
118
119 err:
120 FREE(buf);
121 return NULL;
122 }
123
124 static boolean
i915_drm_buffer_get_handle(struct i915_winsys * iws,struct i915_winsys_buffer * buffer,struct winsys_handle * whandle,unsigned stride)125 i915_drm_buffer_get_handle(struct i915_winsys *iws,
126 struct i915_winsys_buffer *buffer,
127 struct winsys_handle *whandle,
128 unsigned stride)
129 {
130 struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
131
132 if (whandle->type == DRM_API_HANDLE_TYPE_SHARED) {
133 if (!buf->flinked) {
134 if (drm_intel_bo_flink(buf->bo, &buf->flink))
135 return FALSE;
136 buf->flinked = TRUE;
137 }
138
139 whandle->handle = buf->flink;
140 } else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) {
141 whandle->handle = buf->bo->handle;
142 } else {
143 assert(!"unknown usage");
144 return FALSE;
145 }
146
147 whandle->stride = stride;
148 return TRUE;
149 }
150
151 static void *
i915_drm_buffer_map(struct i915_winsys * iws,struct i915_winsys_buffer * buffer,boolean write)152 i915_drm_buffer_map(struct i915_winsys *iws,
153 struct i915_winsys_buffer *buffer,
154 boolean write)
155 {
156 struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
157 drm_intel_bo *bo = intel_bo(buffer);
158 int ret = 0;
159
160 assert(bo);
161
162 if (buf->map_count)
163 goto out;
164
165 ret = drm_intel_gem_bo_map_gtt(bo);
166
167 buf->ptr = bo->virtual;
168
169 assert(ret == 0);
170 out:
171 if (ret)
172 return NULL;
173
174 buf->map_count++;
175 return buf->ptr;
176 }
177
178 static void
i915_drm_buffer_unmap(struct i915_winsys * iws,struct i915_winsys_buffer * buffer)179 i915_drm_buffer_unmap(struct i915_winsys *iws,
180 struct i915_winsys_buffer *buffer)
181 {
182 struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
183
184 if (--buf->map_count)
185 return;
186
187 drm_intel_gem_bo_unmap_gtt(intel_bo(buffer));
188 }
189
190 static int
i915_drm_buffer_write(struct i915_winsys * iws,struct i915_winsys_buffer * buffer,size_t offset,size_t size,const void * data)191 i915_drm_buffer_write(struct i915_winsys *iws,
192 struct i915_winsys_buffer *buffer,
193 size_t offset,
194 size_t size,
195 const void *data)
196 {
197 struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
198
199 return drm_intel_bo_subdata(buf->bo, offset, size, (void*)data);
200 }
201
202 static void
i915_drm_buffer_destroy(struct i915_winsys * iws,struct i915_winsys_buffer * buffer)203 i915_drm_buffer_destroy(struct i915_winsys *iws,
204 struct i915_winsys_buffer *buffer)
205 {
206 drm_intel_bo_unreference(intel_bo(buffer));
207
208 #ifdef DEBUG
209 i915_drm_buffer(buffer)->magic = 0;
210 i915_drm_buffer(buffer)->bo = NULL;
211 #endif
212
213 FREE(buffer);
214 }
215
216 static boolean
i915_drm_buffer_is_busy(struct i915_winsys * iws,struct i915_winsys_buffer * buffer)217 i915_drm_buffer_is_busy(struct i915_winsys *iws,
218 struct i915_winsys_buffer *buffer)
219 {
220 struct i915_drm_buffer* i915_buffer = i915_drm_buffer(buffer);
221 if (!i915_buffer)
222 return FALSE;
223 return drm_intel_bo_busy(i915_buffer->bo);
224 }
225
226
227 void
i915_drm_winsys_init_buffer_functions(struct i915_drm_winsys * idws)228 i915_drm_winsys_init_buffer_functions(struct i915_drm_winsys *idws)
229 {
230 idws->base.buffer_create = i915_drm_buffer_create;
231 idws->base.buffer_create_tiled = i915_drm_buffer_create_tiled;
232 idws->base.buffer_from_handle = i915_drm_buffer_from_handle;
233 idws->base.buffer_get_handle = i915_drm_buffer_get_handle;
234 idws->base.buffer_map = i915_drm_buffer_map;
235 idws->base.buffer_unmap = i915_drm_buffer_unmap;
236 idws->base.buffer_write = i915_drm_buffer_write;
237 idws->base.buffer_destroy = i915_drm_buffer_destroy;
238 idws->base.buffer_is_busy = i915_drm_buffer_is_busy;
239 }
240