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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
36#include "qxl_drv.h"
37#include "qxl_object.h"
38
39static struct qxl_device *qxl_get_qdev(struct ttm_device *bdev)
40{
41 struct qxl_mman *mman;
42 struct qxl_device *qdev;
43
44 mman = container_of(bdev, struct qxl_mman, bdev);
45 qdev = container_of(mman, struct qxl_device, mman);
46 return qdev;
47}
48
49static void qxl_evict_flags(struct ttm_buffer_object *bo,
50 struct ttm_placement *placement)
51{
52 struct qxl_bo *qbo;
53 static const struct ttm_place placements = {
54 .fpfn = 0,
55 .lpfn = 0,
56 .mem_type = TTM_PL_SYSTEM,
57 .flags = 0
58 };
59
60 if (!qxl_ttm_bo_is_qxl_bo(bo)) {
61 placement->placement = &placements;
62 placement->busy_placement = &placements;
63 placement->num_placement = 1;
64 placement->num_busy_placement = 1;
65 return;
66 }
67 qbo = to_qxl_bo(bo);
68 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU);
69 *placement = qbo->placement;
70}
71
72int qxl_ttm_io_mem_reserve(struct ttm_device *bdev,
73 struct ttm_resource *mem)
74{
75 struct qxl_device *qdev = qxl_get_qdev(bdev);
76
77 switch (mem->mem_type) {
78 case TTM_PL_SYSTEM:
79
80 return 0;
81 case TTM_PL_VRAM:
82 mem->bus.is_iomem = true;
83 mem->bus.offset = (mem->start << PAGE_SHIFT) + qdev->vram_base;
84 mem->bus.caching = ttm_cached;
85 break;
86 case TTM_PL_PRIV:
87 mem->bus.is_iomem = true;
88 mem->bus.offset = (mem->start << PAGE_SHIFT) +
89 qdev->surfaceram_base;
90 mem->bus.caching = ttm_cached;
91 break;
92 default:
93 return -EINVAL;
94 }
95 return 0;
96}
97
98
99
100
101static void qxl_ttm_backend_destroy(struct ttm_device *bdev, struct ttm_tt *ttm)
102{
103 ttm_tt_destroy_common(bdev, ttm);
104 ttm_tt_fini(ttm);
105 kfree(ttm);
106}
107
108static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,
109 uint32_t page_flags)
110{
111 struct ttm_tt *ttm;
112
113 ttm = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
114 if (ttm == NULL)
115 return NULL;
116 if (ttm_tt_init(ttm, bo, page_flags, ttm_cached)) {
117 kfree(ttm);
118 return NULL;
119 }
120 return ttm;
121}
122
123static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
124 struct ttm_resource *new_mem)
125{
126 struct qxl_bo *qbo;
127 struct qxl_device *qdev;
128
129 if (!qxl_ttm_bo_is_qxl_bo(bo))
130 return;
131 qbo = to_qxl_bo(bo);
132 qdev = to_qxl(qbo->tbo.base.dev);
133
134 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id)
135 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
136}
137
138static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
139 struct ttm_operation_ctx *ctx,
140 struct ttm_resource *new_mem,
141 struct ttm_place *hop)
142{
143 struct ttm_resource *old_mem = &bo->mem;
144 int ret;
145
146 qxl_bo_move_notify(bo, new_mem);
147
148 ret = ttm_bo_wait_ctx(bo, ctx);
149 if (ret)
150 return ret;
151
152 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
153 ttm_bo_move_null(bo, new_mem);
154 return 0;
155 }
156 return ttm_bo_move_memcpy(bo, ctx, new_mem);
157}
158
159static void qxl_bo_delete_mem_notify(struct ttm_buffer_object *bo)
160{
161 qxl_bo_move_notify(bo, NULL);
162}
163
164static struct ttm_device_funcs qxl_bo_driver = {
165 .ttm_tt_create = &qxl_ttm_tt_create,
166 .ttm_tt_destroy = &qxl_ttm_backend_destroy,
167 .eviction_valuable = ttm_bo_eviction_valuable,
168 .evict_flags = &qxl_evict_flags,
169 .move = &qxl_bo_move,
170 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
171 .delete_mem_notify = &qxl_bo_delete_mem_notify,
172};
173
174static int qxl_ttm_init_mem_type(struct qxl_device *qdev,
175 unsigned int type,
176 uint64_t size)
177{
178 return ttm_range_man_init(&qdev->mman.bdev, type, false, size);
179}
180
181int qxl_ttm_init(struct qxl_device *qdev)
182{
183 int r;
184 int num_io_pages;
185
186
187 r = ttm_device_init(&qdev->mman.bdev, &qxl_bo_driver, NULL,
188 qdev->ddev.anon_inode->i_mapping,
189 qdev->ddev.vma_offset_manager,
190 false, false);
191 if (r) {
192 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
193 return r;
194 }
195
196 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
197 r = qxl_ttm_init_mem_type(qdev, TTM_PL_VRAM, num_io_pages);
198 if (r) {
199 DRM_ERROR("Failed initializing VRAM heap.\n");
200 return r;
201 }
202 r = qxl_ttm_init_mem_type(qdev, TTM_PL_PRIV,
203 qdev->surfaceram_size / PAGE_SIZE);
204 if (r) {
205 DRM_ERROR("Failed initializing Surfaces heap.\n");
206 return r;
207 }
208 DRM_INFO("qxl: %uM of VRAM memory size\n",
209 (unsigned int)qdev->vram_size / (1024 * 1024));
210 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
211 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024));
212 DRM_INFO("qxl: %uM of Surface memory size\n",
213 (unsigned int)qdev->surfaceram_size / (1024 * 1024));
214 return 0;
215}
216
217void qxl_ttm_fini(struct qxl_device *qdev)
218{
219 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_VRAM);
220 ttm_range_man_fini(&qdev->mman.bdev, TTM_PL_PRIV);
221 ttm_device_fini(&qdev->mman.bdev);
222 DRM_INFO("qxl: ttm finalized\n");
223}
224
225#define QXL_DEBUGFS_MEM_TYPES 2
226
227#if defined(CONFIG_DEBUG_FS)
228static int qxl_mm_dump_table(struct seq_file *m, void *data)
229{
230 struct drm_info_node *node = (struct drm_info_node *)m->private;
231 struct ttm_resource_manager *man = (struct ttm_resource_manager *)node->info_ent->data;
232 struct drm_printer p = drm_seq_file_printer(m);
233
234 ttm_resource_manager_debug(man, &p);
235 return 0;
236}
237#endif
238
239void qxl_ttm_debugfs_init(struct qxl_device *qdev)
240{
241#if defined(CONFIG_DEBUG_FS)
242 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
243 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
244 unsigned int i;
245
246 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
247 if (i == 0)
248 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
249 else
250 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
251 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
252 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
253 qxl_mem_types_list[i].driver_features = 0;
254 if (i == 0)
255 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_VRAM);
256 else
257 qxl_mem_types_list[i].data = ttm_manager_type(&qdev->mman.bdev, TTM_PL_PRIV);
258
259 }
260 qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
261#endif
262}
263
