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1 | // SPDX-License-Identifier: MIT |
2 | /* | |
3 | * Copyright © 2020-2022 Intel Corporation | |
4 | */ | |
5 | ||
6 | #include <kunit/test.h> | |
7 | ||
8 | #include "xe_pci.h" | |
9 | ||
10 | static bool sanity_fence_failed(struct xe_device *xe, struct dma_fence *fence, | |
11 | const char *str, struct kunit *test) | |
12 | { | |
13 | long ret; | |
14 | ||
15 | if (IS_ERR(fence)) { | |
16 | KUNIT_FAIL(test, "Failed to create fence for %s: %li\n", str, | |
17 | PTR_ERR(fence)); | |
18 | return true; | |
19 | } | |
20 | if (!fence) | |
21 | return true; | |
22 | ||
23 | ret = dma_fence_wait_timeout(fence, false, 5 * HZ); | |
24 | if (ret <= 0) { | |
25 | KUNIT_FAIL(test, "Fence timed out for %s: %li\n", str, ret); | |
26 | return true; | |
27 | } | |
28 | ||
29 | return false; | |
30 | } | |
31 | ||
32 | static int run_sanity_job(struct xe_migrate *m, struct xe_device *xe, | |
33 | struct xe_bb *bb, u32 second_idx, const char *str, | |
34 | struct kunit *test) | |
35 | { | |
36 | struct xe_sched_job *job = xe_bb_create_migration_job(m->eng, bb, | |
37 | m->batch_base_ofs, | |
38 | second_idx); | |
39 | struct dma_fence *fence; | |
40 | ||
41 | if (IS_ERR(job)) { | |
42 | KUNIT_FAIL(test, "Failed to allocate fake pt: %li\n", | |
43 | PTR_ERR(job)); | |
44 | return PTR_ERR(job); | |
45 | } | |
46 | ||
47 | xe_sched_job_arm(job); | |
48 | fence = dma_fence_get(&job->drm.s_fence->finished); | |
49 | xe_sched_job_push(job); | |
50 | ||
51 | if (sanity_fence_failed(xe, fence, str, test)) | |
52 | return -ETIMEDOUT; | |
53 | ||
54 | dma_fence_put(fence); | |
55 | kunit_info(test, "%s: Job completed\n", str); | |
56 | return 0; | |
57 | } | |
58 | ||
59 | static void | |
60 | sanity_populate_cb(struct xe_migrate_pt_update *pt_update, | |
61 | struct xe_gt *gt, struct iosys_map *map, void *dst, | |
62 | u32 qword_ofs, u32 num_qwords, | |
63 | const struct xe_vm_pgtable_update *update) | |
64 | { | |
65 | int i; | |
66 | u64 *ptr = dst; | |
67 | ||
68 | for (i = 0; i < num_qwords; i++) | |
69 | ptr[i] = (qword_ofs + i - update->ofs) * 0x1111111111111111ULL; | |
70 | } | |
71 | ||
72 | static const struct xe_migrate_pt_update_ops sanity_ops = { | |
73 | .populate = sanity_populate_cb, | |
74 | }; | |
75 | ||
76 | #define check(_retval, _expected, str, _test) \ | |
77 | do { if ((_retval) != (_expected)) { \ | |
78 | KUNIT_FAIL(_test, "Sanity check failed: " str \ | |
79 | " expected %llx, got %llx\n", \ | |
80 | (u64)(_expected), (u64)(_retval)); \ | |
81 | } } while (0) | |
82 | ||
83 | static void test_copy(struct xe_migrate *m, struct xe_bo *bo, | |
84 | struct kunit *test) | |
85 | { | |
86 | struct xe_device *xe = gt_to_xe(m->gt); | |
87 | u64 retval, expected = 0xc0c0c0c0c0c0c0c0ULL; | |
88 | bool big = bo->size >= SZ_2M; | |
89 | struct dma_fence *fence; | |
90 | const char *str = big ? "Copying big bo" : "Copying small bo"; | |
91 | int err; | |
92 | ||
93 | struct xe_bo *sysmem = xe_bo_create_locked(xe, m->gt, NULL, | |
94 | bo->size, | |
95 | ttm_bo_type_kernel, | |
96 | XE_BO_CREATE_SYSTEM_BIT); | |
97 | if (IS_ERR(sysmem)) { | |
98 | KUNIT_FAIL(test, "Failed to allocate sysmem bo for %s: %li\n", | |
99 | str, PTR_ERR(sysmem)); | |
100 | return; | |
101 | } | |
102 | ||
103 | err = xe_bo_validate(sysmem, NULL, false); | |
104 | if (err) { | |
105 | KUNIT_FAIL(test, "Failed to validate system bo for %s: %li\n", | |
106 | str, err); | |
107 | goto out_unlock; | |
108 | } | |
109 | ||
110 | err = xe_bo_vmap(sysmem); | |
111 | if (err) { | |
112 | KUNIT_FAIL(test, "Failed to vmap system bo for %s: %li\n", | |
113 | str, err); | |
114 | goto out_unlock; | |
115 | } | |
116 | ||
117 | xe_map_memset(xe, &sysmem->vmap, 0, 0xd0, sysmem->size); | |
118 | fence = xe_migrate_clear(m, sysmem, sysmem->ttm.resource, 0xc0c0c0c0); | |
119 | if (!sanity_fence_failed(xe, fence, big ? "Clearing sysmem big bo" : | |
120 | "Clearing sysmem small bo", test)) { | |
121 | retval = xe_map_rd(xe, &sysmem->vmap, 0, u64); | |
122 | check(retval, expected, "sysmem first offset should be cleared", | |
123 | test); | |
124 | retval = xe_map_rd(xe, &sysmem->vmap, sysmem->size - 8, u64); | |
125 | check(retval, expected, "sysmem last offset should be cleared", | |
126 | test); | |
127 | } | |
128 | dma_fence_put(fence); | |
129 | ||
130 | /* Try to copy 0xc0 from sysmem to lmem with 2MB or 64KiB/4KiB pages */ | |
131 | xe_map_memset(xe, &sysmem->vmap, 0, 0xc0, sysmem->size); | |
132 | xe_map_memset(xe, &bo->vmap, 0, 0xd0, bo->size); | |
133 | ||
134 | fence = xe_migrate_copy(m, sysmem, sysmem->ttm.resource, | |
135 | bo->ttm.resource); | |
136 | if (!sanity_fence_failed(xe, fence, big ? "Copying big bo sysmem -> vram" : | |
137 | "Copying small bo sysmem -> vram", test)) { | |
138 | retval = xe_map_rd(xe, &bo->vmap, 0, u64); | |
139 | check(retval, expected, | |
140 | "sysmem -> vram bo first offset should be copied", test); | |
141 | retval = xe_map_rd(xe, &bo->vmap, bo->size - 8, u64); | |
142 | check(retval, expected, | |
143 | "sysmem -> vram bo offset should be copied", test); | |
144 | } | |
145 | dma_fence_put(fence); | |
146 | ||
147 | /* And other way around.. slightly hacky.. */ | |
148 | xe_map_memset(xe, &sysmem->vmap, 0, 0xd0, sysmem->size); | |
149 | xe_map_memset(xe, &bo->vmap, 0, 0xc0, bo->size); | |
150 | ||
151 | fence = xe_migrate_copy(m, sysmem, bo->ttm.resource, | |
152 | sysmem->ttm.resource); | |
153 | if (!sanity_fence_failed(xe, fence, big ? "Copying big bo vram -> sysmem" : | |
154 | "Copying small bo vram -> sysmem", test)) { | |
155 | retval = xe_map_rd(xe, &sysmem->vmap, 0, u64); | |
156 | check(retval, expected, | |
157 | "vram -> sysmem bo first offset should be copied", test); | |
158 | retval = xe_map_rd(xe, &sysmem->vmap, bo->size - 8, u64); | |
159 | check(retval, expected, | |
160 | "vram -> sysmem bo last offset should be copied", test); | |
161 | } | |
162 | dma_fence_put(fence); | |
163 | ||
164 | xe_bo_vunmap(sysmem); | |
165 | out_unlock: | |
166 | xe_bo_unlock_no_vm(sysmem); | |
167 | xe_bo_put(sysmem); | |
168 | } | |
169 | ||
170 | static void test_pt_update(struct xe_migrate *m, struct xe_bo *pt, | |
171 | struct kunit *test) | |
172 | { | |
173 | struct xe_device *xe = gt_to_xe(m->gt); | |
174 | struct dma_fence *fence; | |
175 | u64 retval, expected; | |
176 | int i; | |
177 | ||
178 | struct xe_vm_pgtable_update update = { | |
179 | .ofs = 1, | |
180 | .qwords = 0x10, | |
181 | .pt_bo = pt, | |
182 | }; | |
183 | struct xe_migrate_pt_update pt_update = { | |
184 | .ops = &sanity_ops, | |
185 | }; | |
186 | ||
187 | /* Test xe_migrate_update_pgtables() updates the pagetable as expected */ | |
188 | expected = 0xf0f0f0f0f0f0f0f0ULL; | |
189 | xe_map_memset(xe, &pt->vmap, 0, (u8)expected, pt->size); | |
190 | ||
191 | fence = xe_migrate_update_pgtables(m, NULL, NULL, m->eng, &update, 1, | |
192 | NULL, 0, &pt_update); | |
193 | if (sanity_fence_failed(xe, fence, "Migration pagetable update", test)) | |
194 | return; | |
195 | ||
196 | dma_fence_put(fence); | |
197 | retval = xe_map_rd(xe, &pt->vmap, 0, u64); | |
198 | check(retval, expected, "PTE[0] must stay untouched", test); | |
199 | ||
200 | for (i = 0; i < update.qwords; i++) { | |
201 | retval = xe_map_rd(xe, &pt->vmap, (update.ofs + i) * 8, u64); | |
202 | check(retval, i * 0x1111111111111111ULL, "PTE update", test); | |
203 | } | |
204 | ||
205 | retval = xe_map_rd(xe, &pt->vmap, 8 * (update.ofs + update.qwords), | |
206 | u64); | |
207 | check(retval, expected, "PTE[0x11] must stay untouched", test); | |
208 | } | |
209 | ||
210 | static void xe_migrate_sanity_test(struct xe_migrate *m, struct kunit *test) | |
211 | { | |
212 | struct xe_gt *gt = m->gt; | |
213 | struct xe_device *xe = gt_to_xe(gt); | |
214 | struct xe_bo *pt, *bo = m->pt_bo, *big, *tiny; | |
215 | struct xe_res_cursor src_it; | |
216 | struct dma_fence *fence; | |
217 | u64 retval, expected; | |
218 | struct xe_bb *bb; | |
219 | int err; | |
220 | u8 id = gt->info.id; | |
221 | ||
222 | err = xe_bo_vmap(bo); | |
223 | if (err) { | |
224 | KUNIT_FAIL(test, "Failed to vmap our pagetables: %li\n", | |
225 | PTR_ERR(bo)); | |
226 | return; | |
227 | } | |
228 | ||
229 | big = xe_bo_create_pin_map(xe, m->gt, m->eng->vm, SZ_4M, | |
230 | ttm_bo_type_kernel, | |
231 | XE_BO_CREATE_VRAM_IF_DGFX(m->gt) | | |
232 | XE_BO_CREATE_PINNED_BIT); | |
233 | if (IS_ERR(big)) { | |
234 | KUNIT_FAIL(test, "Failed to allocate bo: %li\n", PTR_ERR(big)); | |
235 | goto vunmap; | |
236 | } | |
237 | ||
238 | pt = xe_bo_create_pin_map(xe, m->gt, m->eng->vm, GEN8_PAGE_SIZE, | |
239 | ttm_bo_type_kernel, | |
240 | XE_BO_CREATE_VRAM_IF_DGFX(m->gt) | | |
241 | XE_BO_CREATE_PINNED_BIT); | |
242 | if (IS_ERR(pt)) { | |
243 | KUNIT_FAIL(test, "Failed to allocate fake pt: %li\n", | |
244 | PTR_ERR(pt)); | |
245 | goto free_big; | |
246 | } | |
247 | ||
248 | tiny = xe_bo_create_pin_map(xe, m->gt, m->eng->vm, | |
249 | 2 * SZ_4K, | |
250 | ttm_bo_type_kernel, | |
251 | XE_BO_CREATE_VRAM_IF_DGFX(m->gt) | | |
252 | XE_BO_CREATE_PINNED_BIT); | |
253 | if (IS_ERR(tiny)) { | |
254 | KUNIT_FAIL(test, "Failed to allocate fake pt: %li\n", | |
255 | PTR_ERR(pt)); | |
256 | goto free_pt; | |
257 | } | |
258 | ||
259 | bb = xe_bb_new(m->gt, 32, xe->info.supports_usm); | |
260 | if (IS_ERR(bb)) { | |
261 | KUNIT_FAIL(test, "Failed to create batchbuffer: %li\n", | |
262 | PTR_ERR(bb)); | |
263 | goto free_tiny; | |
264 | } | |
265 | ||
857912c3 LDM |
266 | kunit_info(test, "Starting tests, top level PT addr: %lx, special pagetable base addr: %lx\n", |
267 | (unsigned long)xe_bo_main_addr(m->eng->vm->pt_root[id]->bo, GEN8_PAGE_SIZE), | |
268 | (unsigned long)xe_bo_main_addr(m->pt_bo, GEN8_PAGE_SIZE)); | |
dd08ebf6 MB |
269 | |
270 | /* First part of the test, are we updating our pagetable bo with a new entry? */ | |
271 | xe_map_wr(xe, &bo->vmap, GEN8_PAGE_SIZE * (NUM_KERNEL_PDE - 1), u64, 0xdeaddeadbeefbeef); | |
272 | expected = gen8_pte_encode(NULL, pt, 0, XE_CACHE_WB, 0, 0); | |
273 | if (m->eng->vm->flags & XE_VM_FLAGS_64K) | |
274 | expected |= GEN12_PTE_PS64; | |
275 | xe_res_first(pt->ttm.resource, 0, pt->size, &src_it); | |
276 | emit_pte(m, bb, NUM_KERNEL_PDE - 1, xe_bo_is_vram(pt), | |
277 | &src_it, GEN8_PAGE_SIZE, pt); | |
278 | run_sanity_job(m, xe, bb, bb->len, "Writing PTE for our fake PT", test); | |
279 | ||
280 | retval = xe_map_rd(xe, &bo->vmap, GEN8_PAGE_SIZE * (NUM_KERNEL_PDE - 1), | |
281 | u64); | |
282 | check(retval, expected, "PTE entry write", test); | |
283 | ||
284 | /* Now try to write data to our newly mapped 'pagetable', see if it succeeds */ | |
285 | bb->len = 0; | |
286 | bb->cs[bb->len++] = MI_BATCH_BUFFER_END; | |
287 | xe_map_wr(xe, &pt->vmap, 0, u32, 0xdeaddead); | |
288 | expected = 0x12345678U; | |
289 | ||
290 | emit_clear(m->gt, bb, xe_migrate_vm_addr(NUM_KERNEL_PDE - 1, 0), 4, 4, | |
291 | expected, IS_DGFX(xe)); | |
292 | run_sanity_job(m, xe, bb, 1, "Writing to our newly mapped pagetable", | |
293 | test); | |
294 | ||
295 | retval = xe_map_rd(xe, &pt->vmap, 0, u32); | |
296 | check(retval, expected, "Write to PT after adding PTE", test); | |
297 | ||
298 | /* Sanity checks passed, try the full ones! */ | |
299 | ||
300 | /* Clear a small bo */ | |
301 | kunit_info(test, "Clearing small buffer object\n"); | |
302 | xe_map_memset(xe, &tiny->vmap, 0, 0x22, tiny->size); | |
303 | expected = 0x224488ff; | |
304 | fence = xe_migrate_clear(m, tiny, tiny->ttm.resource, expected); | |
305 | if (sanity_fence_failed(xe, fence, "Clearing small bo", test)) | |
306 | goto out; | |
307 | ||
308 | dma_fence_put(fence); | |
309 | retval = xe_map_rd(xe, &tiny->vmap, 0, u32); | |
310 | check(retval, expected, "Command clear small first value", test); | |
311 | retval = xe_map_rd(xe, &tiny->vmap, tiny->size - 4, u32); | |
312 | check(retval, expected, "Command clear small last value", test); | |
313 | ||
314 | if (IS_DGFX(xe)) { | |
315 | kunit_info(test, "Copying small buffer object to system\n"); | |
316 | test_copy(m, tiny, test); | |
317 | } | |
318 | ||
319 | /* Clear a big bo with a fixed value */ | |
320 | kunit_info(test, "Clearing big buffer object\n"); | |
321 | xe_map_memset(xe, &big->vmap, 0, 0x11, big->size); | |
322 | expected = 0x11223344U; | |
323 | fence = xe_migrate_clear(m, big, big->ttm.resource, expected); | |
324 | if (sanity_fence_failed(xe, fence, "Clearing big bo", test)) | |
325 | goto out; | |
326 | ||
327 | dma_fence_put(fence); | |
328 | retval = xe_map_rd(xe, &big->vmap, 0, u32); | |
329 | check(retval, expected, "Command clear big first value", test); | |
330 | retval = xe_map_rd(xe, &big->vmap, big->size - 4, u32); | |
331 | check(retval, expected, "Command clear big last value", test); | |
332 | ||
333 | if (IS_DGFX(xe)) { | |
334 | kunit_info(test, "Copying big buffer object to system\n"); | |
335 | test_copy(m, big, test); | |
336 | } | |
337 | ||
338 | test_pt_update(m, pt, test); | |
339 | ||
340 | out: | |
341 | xe_bb_free(bb, NULL); | |
342 | free_tiny: | |
343 | xe_bo_unpin(tiny); | |
344 | xe_bo_put(tiny); | |
345 | free_pt: | |
346 | xe_bo_unpin(pt); | |
347 | xe_bo_put(pt); | |
348 | free_big: | |
349 | xe_bo_unpin(big); | |
350 | xe_bo_put(big); | |
351 | vunmap: | |
352 | xe_bo_vunmap(m->pt_bo); | |
353 | } | |
354 | ||
355 | static int migrate_test_run_device(struct xe_device *xe) | |
356 | { | |
357 | struct kunit *test = xe_cur_kunit(); | |
358 | struct xe_gt *gt; | |
359 | int id; | |
360 | ||
361 | for_each_gt(gt, xe, id) { | |
362 | struct xe_migrate *m = gt->migrate; | |
363 | struct ww_acquire_ctx ww; | |
364 | ||
365 | kunit_info(test, "Testing gt id %d.\n", id); | |
366 | xe_vm_lock(m->eng->vm, &ww, 0, true); | |
367 | xe_migrate_sanity_test(m, test); | |
368 | xe_vm_unlock(m->eng->vm, &ww); | |
369 | } | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | void xe_migrate_sanity_kunit(struct kunit *test) | |
375 | { | |
376 | xe_call_for_each_device(migrate_test_run_device); | |
377 | } | |
378 | EXPORT_SYMBOL(xe_migrate_sanity_kunit); |