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fb1d9738 JB |
1 | /************************************************************************** |
2 | * | |
3 | * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | ||
28 | #include "vmwgfx_drv.h" | |
29 | #include "ttm/ttm_bo_driver.h" | |
30 | #include "ttm/ttm_placement.h" | |
31 | ||
32 | static uint32_t vram_placement_flags = TTM_PL_FLAG_VRAM | | |
33 | TTM_PL_FLAG_CACHED; | |
34 | ||
35 | static uint32_t vram_ne_placement_flags = TTM_PL_FLAG_VRAM | | |
36 | TTM_PL_FLAG_CACHED | | |
37 | TTM_PL_FLAG_NO_EVICT; | |
38 | ||
39 | static uint32_t sys_placement_flags = TTM_PL_FLAG_SYSTEM | | |
40 | TTM_PL_FLAG_CACHED; | |
41 | ||
42 | struct ttm_placement vmw_vram_placement = { | |
43 | .fpfn = 0, | |
44 | .lpfn = 0, | |
45 | .num_placement = 1, | |
46 | .placement = &vram_placement_flags, | |
47 | .num_busy_placement = 1, | |
48 | .busy_placement = &vram_placement_flags | |
49 | }; | |
50 | ||
51 | struct ttm_placement vmw_vram_ne_placement = { | |
52 | .fpfn = 0, | |
53 | .lpfn = 0, | |
54 | .num_placement = 1, | |
55 | .placement = &vram_ne_placement_flags, | |
56 | .num_busy_placement = 1, | |
57 | .busy_placement = &vram_ne_placement_flags | |
58 | }; | |
59 | ||
60 | struct ttm_placement vmw_sys_placement = { | |
61 | .fpfn = 0, | |
62 | .lpfn = 0, | |
63 | .num_placement = 1, | |
64 | .placement = &sys_placement_flags, | |
65 | .num_busy_placement = 1, | |
66 | .busy_placement = &sys_placement_flags | |
67 | }; | |
68 | ||
69 | struct vmw_ttm_backend { | |
70 | struct ttm_backend backend; | |
71 | }; | |
72 | ||
73 | static int vmw_ttm_populate(struct ttm_backend *backend, | |
74 | unsigned long num_pages, struct page **pages, | |
75 | struct page *dummy_read_page) | |
76 | { | |
77 | return 0; | |
78 | } | |
79 | ||
80 | static int vmw_ttm_bind(struct ttm_backend *backend, struct ttm_mem_reg *bo_mem) | |
81 | { | |
82 | return 0; | |
83 | } | |
84 | ||
85 | static int vmw_ttm_unbind(struct ttm_backend *backend) | |
86 | { | |
87 | return 0; | |
88 | } | |
89 | ||
90 | static void vmw_ttm_clear(struct ttm_backend *backend) | |
91 | { | |
92 | } | |
93 | ||
94 | static void vmw_ttm_destroy(struct ttm_backend *backend) | |
95 | { | |
96 | struct vmw_ttm_backend *vmw_be = | |
97 | container_of(backend, struct vmw_ttm_backend, backend); | |
98 | ||
99 | kfree(vmw_be); | |
100 | } | |
101 | ||
102 | static struct ttm_backend_func vmw_ttm_func = { | |
103 | .populate = vmw_ttm_populate, | |
104 | .clear = vmw_ttm_clear, | |
105 | .bind = vmw_ttm_bind, | |
106 | .unbind = vmw_ttm_unbind, | |
107 | .destroy = vmw_ttm_destroy, | |
108 | }; | |
109 | ||
110 | struct ttm_backend *vmw_ttm_backend_init(struct ttm_bo_device *bdev) | |
111 | { | |
112 | struct vmw_ttm_backend *vmw_be; | |
113 | ||
114 | vmw_be = kmalloc(sizeof(*vmw_be), GFP_KERNEL); | |
115 | if (!vmw_be) | |
116 | return NULL; | |
117 | ||
118 | vmw_be->backend.func = &vmw_ttm_func; | |
119 | ||
120 | return &vmw_be->backend; | |
121 | } | |
122 | ||
123 | int vmw_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags) | |
124 | { | |
125 | return 0; | |
126 | } | |
127 | ||
128 | int vmw_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, | |
129 | struct ttm_mem_type_manager *man) | |
130 | { | |
131 | struct vmw_private *dev_priv = | |
132 | container_of(bdev, struct vmw_private, bdev); | |
133 | ||
134 | switch (type) { | |
135 | case TTM_PL_SYSTEM: | |
136 | /* System memory */ | |
137 | ||
138 | man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; | |
139 | man->available_caching = TTM_PL_MASK_CACHING; | |
140 | man->default_caching = TTM_PL_FLAG_CACHED; | |
141 | break; | |
142 | case TTM_PL_VRAM: | |
143 | /* "On-card" video ram */ | |
144 | man->gpu_offset = 0; | |
145 | man->io_offset = dev_priv->vram_start; | |
146 | man->io_size = dev_priv->vram_size; | |
147 | man->flags = TTM_MEMTYPE_FLAG_FIXED | | |
148 | TTM_MEMTYPE_FLAG_NEEDS_IOREMAP | TTM_MEMTYPE_FLAG_MAPPABLE; | |
149 | man->io_addr = NULL; | |
150 | man->available_caching = TTM_PL_MASK_CACHING; | |
151 | man->default_caching = TTM_PL_FLAG_WC; | |
152 | break; | |
153 | default: | |
154 | DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); | |
155 | return -EINVAL; | |
156 | } | |
157 | return 0; | |
158 | } | |
159 | ||
160 | void vmw_evict_flags(struct ttm_buffer_object *bo, | |
161 | struct ttm_placement *placement) | |
162 | { | |
163 | *placement = vmw_sys_placement; | |
164 | } | |
165 | ||
166 | /** | |
167 | * FIXME: Proper access checks on buffers. | |
168 | */ | |
169 | ||
170 | static int vmw_verify_access(struct ttm_buffer_object *bo, struct file *filp) | |
171 | { | |
172 | return 0; | |
173 | } | |
174 | ||
effe1105 TH |
175 | static void vmw_move_notify(struct ttm_buffer_object *bo, |
176 | struct ttm_mem_reg *new_mem) | |
177 | { | |
178 | if (new_mem->mem_type != TTM_PL_SYSTEM) | |
179 | vmw_dmabuf_gmr_unbind(bo); | |
180 | } | |
181 | ||
476d51db TH |
182 | static void vmw_swap_notify(struct ttm_buffer_object *bo) |
183 | { | |
184 | vmw_dmabuf_gmr_unbind(bo); | |
185 | } | |
186 | ||
fb1d9738 JB |
187 | /** |
188 | * FIXME: We're using the old vmware polling method to sync. | |
189 | * Do this with fences instead. | |
190 | */ | |
191 | ||
192 | static void *vmw_sync_obj_ref(void *sync_obj) | |
193 | { | |
194 | return sync_obj; | |
195 | } | |
196 | ||
197 | static void vmw_sync_obj_unref(void **sync_obj) | |
198 | { | |
199 | *sync_obj = NULL; | |
200 | } | |
201 | ||
202 | static int vmw_sync_obj_flush(void *sync_obj, void *sync_arg) | |
203 | { | |
204 | struct vmw_private *dev_priv = (struct vmw_private *)sync_arg; | |
205 | ||
206 | mutex_lock(&dev_priv->hw_mutex); | |
207 | vmw_write(dev_priv, SVGA_REG_SYNC, SVGA_SYNC_GENERIC); | |
208 | mutex_unlock(&dev_priv->hw_mutex); | |
209 | return 0; | |
210 | } | |
211 | ||
212 | static bool vmw_sync_obj_signaled(void *sync_obj, void *sync_arg) | |
213 | { | |
214 | struct vmw_private *dev_priv = (struct vmw_private *)sync_arg; | |
215 | uint32_t sequence = (unsigned long) sync_obj; | |
216 | ||
217 | return vmw_fence_signaled(dev_priv, sequence); | |
218 | } | |
219 | ||
220 | static int vmw_sync_obj_wait(void *sync_obj, void *sync_arg, | |
221 | bool lazy, bool interruptible) | |
222 | { | |
223 | struct vmw_private *dev_priv = (struct vmw_private *)sync_arg; | |
224 | uint32_t sequence = (unsigned long) sync_obj; | |
225 | ||
226 | return vmw_wait_fence(dev_priv, false, sequence, false, 3*HZ); | |
227 | } | |
228 | ||
229 | struct ttm_bo_driver vmw_bo_driver = { | |
230 | .create_ttm_backend_entry = vmw_ttm_backend_init, | |
231 | .invalidate_caches = vmw_invalidate_caches, | |
232 | .init_mem_type = vmw_init_mem_type, | |
233 | .evict_flags = vmw_evict_flags, | |
234 | .move = NULL, | |
235 | .verify_access = vmw_verify_access, | |
236 | .sync_obj_signaled = vmw_sync_obj_signaled, | |
237 | .sync_obj_wait = vmw_sync_obj_wait, | |
238 | .sync_obj_flush = vmw_sync_obj_flush, | |
239 | .sync_obj_unref = vmw_sync_obj_unref, | |
effe1105 | 240 | .sync_obj_ref = vmw_sync_obj_ref, |
476d51db TH |
241 | .move_notify = vmw_move_notify, |
242 | .swap_notify = vmw_swap_notify | |
fb1d9738 | 243 | }; |