1 | /* |
2 | * Copyright 2013 Red Hat Inc. |
3 | * |
4 | * Permission is hereby granted, free of charge, to any person obtaining a |
5 | * copy of this software and associated documentation files (the "Software"), |
6 | * to deal in the Software without restriction, including without limitation |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
8 | * and/or sell copies of the Software, and to permit persons to whom the |
9 | * Software is furnished to do so, subject to the following conditions: |
10 | * |
11 | * The above copyright notice and this permission notice shall be included in |
12 | * all copies or substantial portions of the Software. |
13 | * |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
20 | * OTHER DEALINGS IN THE SOFTWARE. |
21 | * |
22 | * Authors: Dave Airlie |
23 | * Alon Levy |
24 | */ |
25 | |
26 | #include <linux/delay.h> |
27 | |
28 | #include <drm/drm.h> |
29 | #include <drm/drm_file.h> |
30 | #include <drm/drm_debugfs.h> |
31 | #include <drm/qxl_drm.h> |
32 | #include <drm/ttm/ttm_bo.h> |
33 | #include <drm/ttm/ttm_placement.h> |
34 | #include <drm/ttm/ttm_range_manager.h> |
35 | #include <drm/ttm/ttm_tt.h> |
36 | |
37 | #include "qxl_drv.h" |
38 | #include "qxl_object.h" |
39 | |
40 | static struct qxl_device *qxl_get_qdev(struct ttm_device *bdev) |
41 | { |
42 | struct qxl_mman *mman; |
43 | struct qxl_device *qdev; |
44 | |
45 | mman = container_of(bdev, struct qxl_mman, bdev); |
46 | qdev = container_of(mman, struct qxl_device, mman); |
47 | return qdev; |
48 | } |
49 | |
50 | static void qxl_evict_flags(struct ttm_buffer_object *bo, |
51 | struct ttm_placement *placement) |
52 | { |
53 | struct qxl_bo *qbo; |
54 | static const struct ttm_place placements = { |
55 | .fpfn = 0, |
56 | .lpfn = 0, |
57 | .mem_type = TTM_PL_SYSTEM, |
58 | .flags = 0 |
59 | }; |
60 | |
61 | if (!qxl_ttm_bo_is_qxl_bo(bo)) { |
62 | placement->placement = &placements; |
63 | placement->num_placement = 1; |
64 | return; |
65 | } |
66 | qbo = to_qxl_bo(bo); |
67 | qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU); |
68 | *placement = qbo->placement; |
69 | } |
70 | |
71 | int qxl_ttm_io_mem_reserve(struct ttm_device *bdev, |
72 | struct ttm_resource *mem) |
73 | { |
74 | struct qxl_device *qdev = qxl_get_qdev(bdev); |
75 | |
76 | switch (mem->mem_type) { |
77 | case TTM_PL_SYSTEM: |
78 | /* system memory */ |
79 | return 0; |
80 | case TTM_PL_VRAM: |
81 | mem->bus.is_iomem = true; |
82 | mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base; |
83 | mem->bus.caching = ttm_write_combined; |
84 | break; |
85 | case TTM_PL_PRIV: |
86 | mem->bus.is_iomem = true; |
87 | mem->bus.offset = (mem->start << PAGE_SHIFT) + |
88 | qdev->surfaceram_base; |
89 | mem->bus.caching = ttm_write_combined; |
90 | break; |
91 | default: |
92 | return -EINVAL; |
93 | } |
94 | return 0; |
95 | } |
96 | |
97 | /* |
98 | * TTM backend functions. |
99 | */ |
100 | static void qxl_ttm_backend_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) |
101 | { |
102 | ttm_tt_fini(ttm); |
103 | kfree(objp: ttm); |
104 | } |
105 | |
106 | static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, |
107 | uint32_t page_flags) |
108 | { |
109 | struct ttm_tt *ttm; |
110 | |
111 | ttm = kzalloc(size: sizeof(struct ttm_tt), GFP_KERNEL); |
112 | if (ttm == NULL) |
113 | return NULL; |
114 | if (ttm_tt_init(ttm, bo, page_flags, caching: ttm_cached, extra_pages: 0)) { |
115 | kfree(objp: ttm); |
116 | return NULL; |
117 | } |
118 | return ttm; |
119 | } |
120 | |
121 | static void qxl_bo_move_notify(struct ttm_buffer_object *bo, |
122 | struct ttm_resource *new_mem) |
123 | { |
124 | struct qxl_bo *qbo; |
125 | struct qxl_device *qdev; |
126 | |
127 | if (!qxl_ttm_bo_is_qxl_bo(bo) || !bo->resource) |
128 | return; |
129 | qbo = to_qxl_bo(bo); |
130 | qdev = to_qxl(qbo->tbo.base.dev); |
131 | |
132 | if (bo->resource->mem_type == TTM_PL_PRIV && qbo->surface_id) |
133 | qxl_surface_evict(qdev, surf: qbo, freeing: new_mem ? true : false); |
134 | } |
135 | |
136 | static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict, |
137 | struct ttm_operation_ctx *ctx, |
138 | struct ttm_resource *new_mem, |
139 | struct ttm_place *hop) |
140 | { |
141 | struct ttm_resource *old_mem = bo->resource; |
142 | int ret; |
143 | |
144 | if (!old_mem) { |
145 | if (new_mem->mem_type != TTM_PL_SYSTEM) { |
146 | hop->mem_type = TTM_PL_SYSTEM; |
147 | hop->flags = TTM_PL_FLAG_TEMPORARY; |
148 | return -EMULTIHOP; |
149 | } |
150 | |
151 | ttm_bo_move_null(bo, new_mem); |
152 | return 0; |
153 | } |
154 | |
155 | qxl_bo_move_notify(bo, new_mem); |
156 | |
157 | ret = ttm_bo_wait_ctx(bo, ctx); |
158 | if (ret) |
159 | return ret; |
160 | |
161 | if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { |
162 | ttm_bo_move_null(bo, new_mem); |
163 | return 0; |
164 | } |
165 | return ttm_bo_move_memcpy(bo, ctx, new_mem); |
166 | } |
167 | |
168 | static void qxl_bo_delete_mem_notify(struct ttm_buffer_object *bo) |
169 | { |
170 | qxl_bo_move_notify(bo, NULL); |
171 | } |
172 | |
173 | static struct ttm_device_funcs qxl_bo_driver = { |
174 | .ttm_tt_create = &qxl_ttm_tt_create, |
175 | .ttm_tt_destroy = &qxl_ttm_backend_destroy, |
176 | .eviction_valuable = ttm_bo_eviction_valuable, |
177 | .evict_flags = &qxl_evict_flags, |
178 | .move = &qxl_bo_move, |
179 | .io_mem_reserve = &qxl_ttm_io_mem_reserve, |
180 | .delete_mem_notify = &qxl_bo_delete_mem_notify, |
181 | }; |
182 | |
183 | static int qxl_ttm_init_mem_type(struct qxl_device *qdev, |
184 | unsigned int type, |
185 | uint64_t size) |
186 | { |
187 | return ttm_range_man_init(bdev: &qdev->mman.bdev, type, use_tt: false, p_size: size); |
188 | } |
189 | |
190 | int qxl_ttm_init(struct qxl_device *qdev) |
191 | { |
192 | int r; |
193 | int num_io_pages; /* != rom->num_io_pages, we include surface0 */ |
194 | |
195 | /* No others user of address space so set it to 0 */ |
196 | r = ttm_device_init(bdev: &qdev->mman.bdev, funcs: &qxl_bo_driver, NULL, |
197 | mapping: qdev->ddev.anon_inode->i_mapping, |
198 | vma_manager: qdev->ddev.vma_offset_manager, |
199 | use_dma_alloc: false, use_dma32: false); |
200 | if (r) { |
201 | DRM_ERROR("failed initializing buffer object driver(%d).\n" , r); |
202 | return r; |
203 | } |
204 | /* NOTE: this includes the framebuffer (aka surface 0) */ |
205 | num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE; |
206 | r = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, size: num_io_pages); |
207 | if (r) { |
208 | DRM_ERROR("Failed initializing VRAM heap.\n" ); |
209 | return r; |
210 | } |
211 | r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV, |
212 | size: qdev->surfaceram_size / PAGE_SIZE); |
213 | if (r) { |
214 | DRM_ERROR("Failed initializing Surfaces heap.\n" ); |
215 | return r; |
216 | } |
217 | DRM_INFO("qxl: %uM of VRAM memory size\n" , |
218 | (unsigned int)qdev->vram_size / (1024 * 1024)); |
219 | DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n" , |
220 | ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024)); |
221 | DRM_INFO("qxl: %uM of Surface memory size\n" , |
222 | (unsigned int)qdev->surfaceram_size / (1024 * 1024)); |
223 | return 0; |
224 | } |
225 | |
226 | void qxl_ttm_fini(struct qxl_device *qdev) |
227 | { |
228 | ttm_range_man_fini(bdev: &qdev->mman.bdev, TTM_PL_VRAM); |
229 | ttm_range_man_fini(bdev: &qdev->mman.bdev, TTM_PL_PRIV); |
230 | ttm_device_fini(bdev: &qdev->mman.bdev); |
231 | DRM_INFO("qxl: ttm finalized\n" ); |
232 | } |
233 | |
234 | void qxl_ttm_debugfs_init(struct qxl_device *qdev) |
235 | { |
236 | #if defined(CONFIG_DEBUG_FS) |
237 | ttm_resource_manager_create_debugfs(man: ttm_manager_type(bdev: &qdev->mman.bdev, |
238 | TTM_PL_VRAM), |
239 | parent: qdev->ddev.primary->debugfs_root, name: "qxl_mem_mm" ); |
240 | ttm_resource_manager_create_debugfs(man: ttm_manager_type(bdev: &qdev->mman.bdev, |
241 | TTM_PL_PRIV), |
242 | parent: qdev->ddev.primary->debugfs_root, name: "qxl_surf_mm" ); |
243 | #endif |
244 | } |
245 | |