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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_placement.h>
35#include <drm/ttm/ttm_range_manager.h>
36
37#include "qxl_drv.h"
38#include "qxl_object.h"
39
40static 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
50static 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->busy_placement = &placements;
64 placement->num_placement = 1;
65 placement->num_busy_placement = 1;
66 return;
67 }
68 qbo = to_qxl_bo(bo);
69 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU);
70 *placement = qbo->placement;
71}
72
73int qxl_ttm_io_mem_reserve(struct ttm_device *bdev,
74 struct ttm_resource *mem)
75{
76 struct qxl_device *qdev = qxl_get_qdev(bdev);
77
78 switch (mem->mem_type) {
79 case TTM_PL_SYSTEM:
80
81 return 0;
82 case TTM_PL_VRAM:
83 mem->bus.is_iomem = true;
84 mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base;
85 mem->bus.caching = ttm_cached;
86 break;
87 case TTM_PL_PRIV:
88 mem->bus.is_iomem = true;
89 mem->bus.offset = (mem->start << PAGE_SHIFT) +
90 qdev->surfaceram_base;
91 mem->bus.caching = ttm_cached;
92 break;
93 default:
94 return -EINVAL;
95 }
96 return 0;
97}
98
99
100
101
102static void qxl_ttm_backend_destroy(struct ttm_device *bdev, struct ttm_tt *ttm)
103{
104 ttm_tt_destroy_common(bdev, ttm);
105 ttm_tt_fini(ttm);
106 kfree(ttm);
107}
108
109static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,
110 uint32_t page_flags)
111{
112 struct ttm_tt *ttm;
113
114 ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
115 if (ttm == NULL)
116 return NULL;
117 if (ttm_tt_init(ttm, bo, page_flags, ttm_cached)) {
118 kfree(ttm);
119 return NULL;
120 }
121 return ttm;
122}
123
124static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
125 struct ttm_resource *new_mem)
126{
127 struct qxl_bo *qbo;
128 struct qxl_device *qdev;
129
130 if (!qxl_ttm_bo_is_qxl_bo(bo) || !bo->resource)
131 return;
132 qbo = to_qxl_bo(bo);
133 qdev = to_qxl(qbo->tbo.base.dev);
134
135 if (bo->resource->mem_type == TTM_PL_PRIV && qbo->surface_id)
136 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
137}
138
139static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
140 struct ttm_operation_ctx *ctx,
141 struct ttm_resource *new_mem,
142 struct ttm_place *hop)
143{
144 struct ttm_resource *old_mem = bo->resource;
145 int ret;
146
147 qxl_bo_move_notify(bo, new_mem);
148
149 ret = ttm_bo_wait_ctx(bo, ctx);
150 if (ret)
151 return ret;
152
153 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
154 ttm_bo_move_null(bo, new_mem);
155 return 0;
156 }
157 return ttm_bo_move_memcpy(bo, ctx, new_mem);
158}
159
160static void qxl_bo_delete_mem_notify(struct ttm_buffer_object *bo)
161{
162 qxl_bo_move_notify(bo, NULL);
163}
164
165static struct ttm_device_funcs qxl_bo_driver = {
166 .ttm_tt_create = &qxl_ttm_tt_create,
167 .ttm_tt_destroy = &qxl_ttm_backend_destroy,
168 .eviction_valuable = ttm_bo_eviction_valuable,
169 .evict_flags = &qxl_evict_flags,
170 .move = &qxl_bo_move,
171 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
172 .delete_mem_notify = &qxl_bo_delete_mem_notify,
173};
174
175static int qxl_ttm_init_mem_type(struct qxl_device *qdev,
176 unsigned int type,
177 uint64_t size)
178{
179 return ttm_range_man_init(&qdev->mman.bdev, type, false, size);
180}
181
182int qxl_ttm_init(struct qxl_device *qdev)
183{
184 int r;
185 int num_io_pages;
186
187
188 r = ttm_device_init(&qdev->mman.bdev, &qxl_bo_driver, NULL,
189 qdev->ddev.anon_inode->i_mapping,
190 qdev->ddev.vma_offset_manager,
191 false, false);
192 if (r) {
193 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
194 return r;
195 }
196
197 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
198 r = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages);
199 if (r) {
200 DRM_ERROR("Failed initializing VRAM heap.\n");
201 return r;
202 }
203 r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV,
204 qdev->surfaceram_size / PAGE_SIZE);
205 if (r) {
206 DRM_ERROR("Failed initializing Surfaces heap.\n");
207 return r;
208 }
209 DRM_INFO("qxl: %uM of VRAM memory size\n",
210 (unsigned int)qdev->vram_size / (1024 * 1024));
211 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
212 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024));
213 DRM_INFO("qxl: %uM of Surface memory size\n",
214 (unsigned int)qdev->surfaceram_size / (1024 * 1024));
215 return 0;
216}
217
218void qxl_ttm_fini(struct qxl_device *qdev)
219{
220 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM);
221 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_PRIV);
222 ttm_device_fini(&qdev->mman.bdev);
223 DRM_INFO("qxl: ttm finalized\n");
224}
225
226#define QXL_DEBUGFS_MEM_TYPES 2
227
228#if defined(CONFIG_DEBUG_FS)
229static int qxl_mm_dump_table(struct seq_file *m, void *data)
230{
231 struct drm_info_node *node = (struct drm_info_node *)m->private;
232 struct ttm_resource_manager *man = (struct ttm_resource_manager *)node->info_ent->data;
233 struct drm_printer p = drm_seq_file_printer(m);
234
235 ttm_resource_manager_debug(man, &p);
236 return 0;
237}
238#endif
239
240void qxl_ttm_debugfs_init(struct qxl_device *qdev)
241{
242#if defined(CONFIG_DEBUG_FS)
243 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
244 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
245 unsigned int i;
246
247 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
248 if (i == 0)
249 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
250 else
251 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
252 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
253 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
254 qxl_mem_types_list[i].driver_features = 0;
255 if (i == 0)
256 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_VRAM);
257 else
258 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_PRIV);
259
260 }
261 qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
262#endif
263}
264
