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
8static 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
26static struct i915_winsys_buffer *
27i915_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
49err:
50   assert(0);
51   FREE(buf);
52   return NULL;
53}
54
55static struct i915_winsys_buffer *
56i915_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
85err:
86   assert(0);
87   FREE(buf);
88   return NULL;
89}
90
91static struct i915_winsys_buffer *
92i915_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
119err:
120   FREE(buf);
121   return NULL;
122}
123
124static boolean
125i915_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
151static void *
152i915_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);
170out:
171   if (ret)
172      return NULL;
173
174   buf->map_count++;
175   return buf->ptr;
176}
177
178static void
179i915_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
190static int
191i915_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
202static void
203i915_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
216static boolean
217i915_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
227void
228i915_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