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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_api.h>
33#include <drm/ttm/ttm_bo_driver.h>
34#include <drm/ttm/ttm_module.h>
35#include <drm/ttm/ttm_page_alloc.h>
36#include <drm/ttm/ttm_placement.h>
37
38#include "qxl_drv.h"
39#include "qxl_object.h"
40
41static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
42{
43 struct qxl_mman *mman;
44 struct qxl_device *qdev;
45
46 mman = container_of(bdev, struct qxl_mman, bdev);
47 qdev = container_of(mman, struct qxl_device, mman);
48 return qdev;
49}
50
51static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
52 struct ttm_mem_type_manager *man)
53{
54 struct qxl_device *qdev = qxl_get_qdev(bdev);
55 unsigned int gpu_offset_shift =
56 64 - (qdev->rom->slot_gen_bits + qdev->rom->slot_id_bits + 8);
57 struct qxl_memslot *slot;
58
59 switch (type) {
60 case TTM_PL_SYSTEM:
61
62 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
63 man->available_caching = TTM_PL_MASK_CACHING;
64 man->default_caching = TTM_PL_FLAG_CACHED;
65 break;
66 case TTM_PL_VRAM:
67 case TTM_PL_PRIV:
68
69 slot = (type == TTM_PL_VRAM) ?
70 &qdev->main_slot : &qdev->surfaces_slot;
71 slot->gpu_offset = (uint64_t)type << gpu_offset_shift;
72 man->func = &ttm_bo_manager_func;
73 man->gpu_offset = slot->gpu_offset;
74 man->flags = TTM_MEMTYPE_FLAG_FIXED |
75 TTM_MEMTYPE_FLAG_MAPPABLE;
76 man->available_caching = TTM_PL_MASK_CACHING;
77 man->default_caching = TTM_PL_FLAG_CACHED;
78 break;
79 default:
80 DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type);
81 return -EINVAL;
82 }
83 return 0;
84}
85
86static void qxl_evict_flags(struct ttm_buffer_object *bo,
87 struct ttm_placement *placement)
88{
89 struct qxl_bo *qbo;
90 static const struct ttm_place placements = {
91 .fpfn = 0,
92 .lpfn = 0,
93 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
94 };
95
96 if (!qxl_ttm_bo_is_qxl_bo(bo)) {
97 placement->placement = &placements;
98 placement->busy_placement = &placements;
99 placement->num_placement = 1;
100 placement->num_busy_placement = 1;
101 return;
102 }
103 qbo = to_qxl_bo(bo);
104 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
105 *placement = qbo->placement;
106}
107
108int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
109 struct ttm_mem_reg *mem)
110{
111 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
112 struct qxl_device *qdev = qxl_get_qdev(bdev);
113
114 mem->bus.addr = NULL;
115 mem->bus.offset = 0;
116 mem->bus.size = mem->num_pages << PAGE_SHIFT;
117 mem->bus.base = 0;
118 mem->bus.is_iomem = false;
119 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
120 return -EINVAL;
121 switch (mem->mem_type) {
122 case TTM_PL_SYSTEM:
123
124 return 0;
125 case TTM_PL_VRAM:
126 mem->bus.is_iomem = true;
127 mem->bus.base = qdev->vram_base;
128 mem->bus.offset = mem->start << PAGE_SHIFT;
129 break;
130 case TTM_PL_PRIV:
131 mem->bus.is_iomem = true;
132 mem->bus.base = qdev->surfaceram_base;
133 mem->bus.offset = mem->start << PAGE_SHIFT;
134 break;
135 default:
136 return -EINVAL;
137 }
138 return 0;
139}
140
141static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
142 struct ttm_mem_reg *mem)
143{
144}
145
146
147
148
149struct qxl_ttm_tt {
150 struct ttm_tt ttm;
151 struct qxl_device *qdev;
152 u64 offset;
153};
154
155static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
156 struct ttm_mem_reg *bo_mem)
157{
158 struct qxl_ttm_tt *gtt = (void *)ttm;
159
160 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
161 if (!ttm->num_pages) {
162 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
163 ttm->num_pages, bo_mem, ttm);
164 }
165
166 return -1;
167}
168
169static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
170{
171
172 return -1;
173}
174
175static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
176{
177 struct qxl_ttm_tt *gtt = (void *)ttm;
178
179 ttm_tt_fini(>t->ttm);
180 kfree(gtt);
181}
182
183static struct ttm_backend_func qxl_backend_func = {
184 .bind = &qxl_ttm_backend_bind,
185 .unbind = &qxl_ttm_backend_unbind,
186 .destroy = &qxl_ttm_backend_destroy,
187};
188
189static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,
190 uint32_t page_flags)
191{
192 struct qxl_device *qdev;
193 struct qxl_ttm_tt *gtt;
194
195 qdev = qxl_get_qdev(bo->bdev);
196 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
197 if (gtt == NULL)
198 return NULL;
199 gtt->ttm.func = &qxl_backend_func;
200 gtt->qdev = qdev;
201 if (ttm_tt_init(>t->ttm, bo, page_flags)) {
202 kfree(gtt);
203 return NULL;
204 }
205 return >t->ttm;
206}
207
208static void qxl_move_null(struct ttm_buffer_object *bo,
209 struct ttm_mem_reg *new_mem)
210{
211 struct ttm_mem_reg *old_mem = &bo->mem;
212
213 BUG_ON(old_mem->mm_node != NULL);
214 *old_mem = *new_mem;
215 new_mem->mm_node = NULL;
216}
217
218static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
219 struct ttm_operation_ctx *ctx,
220 struct ttm_mem_reg *new_mem)
221{
222 struct ttm_mem_reg *old_mem = &bo->mem;
223 int ret;
224
225 ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu);
226 if (ret)
227 return ret;
228
229 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
230 qxl_move_null(bo, new_mem);
231 return 0;
232 }
233 return ttm_bo_move_memcpy(bo, ctx, new_mem);
234}
235
236static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
237 bool evict,
238 struct ttm_mem_reg *new_mem)
239{
240 struct qxl_bo *qbo;
241 struct qxl_device *qdev;
242
243 if (!qxl_ttm_bo_is_qxl_bo(bo))
244 return;
245 qbo = to_qxl_bo(bo);
246 qdev = to_qxl(qbo->tbo.base.dev);
247
248 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id)
249 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
250}
251
252static struct ttm_bo_driver qxl_bo_driver = {
253 .ttm_tt_create = &qxl_ttm_tt_create,
254 .init_mem_type = &qxl_init_mem_type,
255 .eviction_valuable = ttm_bo_eviction_valuable,
256 .evict_flags = &qxl_evict_flags,
257 .move = &qxl_bo_move,
258 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
259 .io_mem_free = &qxl_ttm_io_mem_free,
260 .move_notify = &qxl_bo_move_notify,
261};
262
263int qxl_ttm_init(struct qxl_device *qdev)
264{
265 int r;
266 int num_io_pages;
267
268
269 r = ttm_bo_device_init(&qdev->mman.bdev,
270 &qxl_bo_driver,
271 qdev->ddev.anon_inode->i_mapping,
272 qdev->ddev.vma_offset_manager,
273 false);
274 if (r) {
275 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
276 return r;
277 }
278
279 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
280 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
281 num_io_pages);
282 if (r) {
283 DRM_ERROR("Failed initializing VRAM heap.\n");
284 return r;
285 }
286 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV,
287 qdev->surfaceram_size / PAGE_SIZE);
288 if (r) {
289 DRM_ERROR("Failed initializing Surfaces heap.\n");
290 return r;
291 }
292 DRM_INFO("qxl: %uM of VRAM memory size\n",
293 (unsigned int)qdev->vram_size / (1024 * 1024));
294 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
295 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024));
296 DRM_INFO("qxl: %uM of Surface memory size\n",
297 (unsigned int)qdev->surfaceram_size / (1024 * 1024));
298 return 0;
299}
300
301void qxl_ttm_fini(struct qxl_device *qdev)
302{
303 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
304 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV);
305 ttm_bo_device_release(&qdev->mman.bdev);
306 DRM_INFO("qxl: ttm finalized\n");
307}
308
309#define QXL_DEBUGFS_MEM_TYPES 2
310
311#if defined(CONFIG_DEBUG_FS)
312static int qxl_mm_dump_table(struct seq_file *m, void *data)
313{
314 struct drm_info_node *node = (struct drm_info_node *)m->private;
315 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
316 struct drm_printer p = drm_seq_file_printer(m);
317
318 spin_lock(&ttm_bo_glob.lru_lock);
319 drm_mm_print(mm, &p);
320 spin_unlock(&ttm_bo_glob.lru_lock);
321 return 0;
322}
323#endif
324
325void qxl_ttm_debugfs_init(struct qxl_device *qdev)
326{
327#if defined(CONFIG_DEBUG_FS)
328 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
329 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
330 unsigned int i;
331
332 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
333 if (i == 0)
334 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
335 else
336 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
337 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
338 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
339 qxl_mem_types_list[i].driver_features = 0;
340 if (i == 0)
341 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
342 else
343 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV].priv;
344
345 }
346 qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
347#endif
348}
349
