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c8afe684 RC |
1 | /* |
2 | * Copyright (C) 2013 Red Hat | |
3 | * Author: Rob Clark <robdclark@gmail.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published by | |
7 | * the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | ||
18 | #include <linux/spinlock.h> | |
19 | #include <linux/shmem_fs.h> | |
05b84911 | 20 | #include <linux/dma-buf.h> |
01c8f1c4 | 21 | #include <linux/pfn_t.h> |
c8afe684 RC |
22 | |
23 | #include "msm_drv.h" | |
fde5de6c | 24 | #include "msm_fence.h" |
c8afe684 | 25 | #include "msm_gem.h" |
7198e6b0 | 26 | #include "msm_gpu.h" |
871d812a | 27 | #include "msm_mmu.h" |
c8afe684 | 28 | |
0e08270a SS |
29 | static void msm_gem_vunmap_locked(struct drm_gem_object *obj); |
30 | ||
31 | ||
871d812a RC |
32 | static dma_addr_t physaddr(struct drm_gem_object *obj) |
33 | { | |
34 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
35 | struct msm_drm_private *priv = obj->dev->dev_private; | |
36 | return (((dma_addr_t)msm_obj->vram_node->start) << PAGE_SHIFT) + | |
37 | priv->vram.paddr; | |
38 | } | |
39 | ||
072f1f91 RC |
40 | static bool use_pages(struct drm_gem_object *obj) |
41 | { | |
42 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
43 | return !msm_obj->vram_node; | |
44 | } | |
45 | ||
871d812a | 46 | /* allocate pages from VRAM carveout, used when no IOMMU: */ |
0e08270a | 47 | static struct page **get_pages_vram(struct drm_gem_object *obj, int npages) |
871d812a RC |
48 | { |
49 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
50 | struct msm_drm_private *priv = obj->dev->dev_private; | |
51 | dma_addr_t paddr; | |
52 | struct page **p; | |
53 | int ret, i; | |
54 | ||
2098105e | 55 | p = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); |
871d812a RC |
56 | if (!p) |
57 | return ERR_PTR(-ENOMEM); | |
58 | ||
0e08270a | 59 | spin_lock(&priv->vram.lock); |
4e64e553 | 60 | ret = drm_mm_insert_node(&priv->vram.mm, msm_obj->vram_node, npages); |
0e08270a | 61 | spin_unlock(&priv->vram.lock); |
871d812a | 62 | if (ret) { |
2098105e | 63 | kvfree(p); |
871d812a RC |
64 | return ERR_PTR(ret); |
65 | } | |
66 | ||
67 | paddr = physaddr(obj); | |
68 | for (i = 0; i < npages; i++) { | |
69 | p[i] = phys_to_page(paddr); | |
70 | paddr += PAGE_SIZE; | |
71 | } | |
72 | ||
73 | return p; | |
74 | } | |
c8afe684 | 75 | |
c8afe684 RC |
76 | static struct page **get_pages(struct drm_gem_object *obj) |
77 | { | |
78 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
79 | ||
80 | if (!msm_obj->pages) { | |
81 | struct drm_device *dev = obj->dev; | |
871d812a | 82 | struct page **p; |
c8afe684 RC |
83 | int npages = obj->size >> PAGE_SHIFT; |
84 | ||
072f1f91 | 85 | if (use_pages(obj)) |
0cdbe8ac | 86 | p = drm_gem_get_pages(obj); |
871d812a RC |
87 | else |
88 | p = get_pages_vram(obj, npages); | |
89 | ||
c8afe684 RC |
90 | if (IS_ERR(p)) { |
91 | dev_err(dev->dev, "could not get pages: %ld\n", | |
92 | PTR_ERR(p)); | |
93 | return p; | |
94 | } | |
95 | ||
62e3a3e3 PK |
96 | msm_obj->pages = p; |
97 | ||
c8afe684 | 98 | msm_obj->sgt = drm_prime_pages_to_sg(p, npages); |
1f70e079 | 99 | if (IS_ERR(msm_obj->sgt)) { |
62e3a3e3 PK |
100 | void *ptr = ERR_CAST(msm_obj->sgt); |
101 | ||
c8afe684 | 102 | dev_err(dev->dev, "failed to allocate sgt\n"); |
62e3a3e3 PK |
103 | msm_obj->sgt = NULL; |
104 | return ptr; | |
c8afe684 RC |
105 | } |
106 | ||
c8afe684 RC |
107 | /* For non-cached buffers, ensure the new pages are clean |
108 | * because display controller, GPU, etc. are not coherent: | |
109 | */ | |
110 | if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) | |
111 | dma_map_sg(dev->dev, msm_obj->sgt->sgl, | |
112 | msm_obj->sgt->nents, DMA_BIDIRECTIONAL); | |
113 | } | |
114 | ||
115 | return msm_obj->pages; | |
116 | } | |
117 | ||
0e08270a SS |
118 | static void put_pages_vram(struct drm_gem_object *obj) |
119 | { | |
120 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
121 | struct msm_drm_private *priv = obj->dev->dev_private; | |
122 | ||
123 | spin_lock(&priv->vram.lock); | |
124 | drm_mm_remove_node(msm_obj->vram_node); | |
125 | spin_unlock(&priv->vram.lock); | |
126 | ||
127 | kvfree(msm_obj->pages); | |
128 | } | |
129 | ||
c8afe684 RC |
130 | static void put_pages(struct drm_gem_object *obj) |
131 | { | |
132 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
133 | ||
134 | if (msm_obj->pages) { | |
135 | /* For non-cached buffers, ensure the new pages are clean | |
136 | * because display controller, GPU, etc. are not coherent: | |
137 | */ | |
138 | if (msm_obj->flags & (MSM_BO_WC|MSM_BO_UNCACHED)) | |
139 | dma_unmap_sg(obj->dev->dev, msm_obj->sgt->sgl, | |
140 | msm_obj->sgt->nents, DMA_BIDIRECTIONAL); | |
62e3a3e3 PK |
141 | |
142 | if (msm_obj->sgt) | |
143 | sg_free_table(msm_obj->sgt); | |
144 | ||
c8afe684 RC |
145 | kfree(msm_obj->sgt); |
146 | ||
072f1f91 | 147 | if (use_pages(obj)) |
871d812a | 148 | drm_gem_put_pages(obj, msm_obj->pages, true, false); |
0e08270a SS |
149 | else |
150 | put_pages_vram(obj); | |
871d812a | 151 | |
c8afe684 RC |
152 | msm_obj->pages = NULL; |
153 | } | |
154 | } | |
155 | ||
05b84911 RC |
156 | struct page **msm_gem_get_pages(struct drm_gem_object *obj) |
157 | { | |
0e08270a | 158 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
05b84911 | 159 | struct page **p; |
0e08270a SS |
160 | |
161 | mutex_lock(&msm_obj->lock); | |
162 | ||
163 | if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { | |
164 | mutex_unlock(&msm_obj->lock); | |
165 | return ERR_PTR(-EBUSY); | |
166 | } | |
167 | ||
05b84911 | 168 | p = get_pages(obj); |
0e08270a | 169 | mutex_unlock(&msm_obj->lock); |
05b84911 RC |
170 | return p; |
171 | } | |
172 | ||
173 | void msm_gem_put_pages(struct drm_gem_object *obj) | |
174 | { | |
175 | /* when we start tracking the pin count, then do something here */ | |
176 | } | |
177 | ||
c8afe684 RC |
178 | int msm_gem_mmap_obj(struct drm_gem_object *obj, |
179 | struct vm_area_struct *vma) | |
180 | { | |
181 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
182 | ||
183 | vma->vm_flags &= ~VM_PFNMAP; | |
184 | vma->vm_flags |= VM_MIXEDMAP; | |
185 | ||
186 | if (msm_obj->flags & MSM_BO_WC) { | |
187 | vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); | |
188 | } else if (msm_obj->flags & MSM_BO_UNCACHED) { | |
189 | vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); | |
190 | } else { | |
191 | /* | |
192 | * Shunt off cached objs to shmem file so they have their own | |
193 | * address_space (so unmap_mapping_range does what we want, | |
194 | * in particular in the case of mmap'd dmabufs) | |
195 | */ | |
196 | fput(vma->vm_file); | |
197 | get_file(obj->filp); | |
198 | vma->vm_pgoff = 0; | |
199 | vma->vm_file = obj->filp; | |
200 | ||
201 | vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); | |
202 | } | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) | |
208 | { | |
209 | int ret; | |
210 | ||
211 | ret = drm_gem_mmap(filp, vma); | |
212 | if (ret) { | |
213 | DBG("mmap failed: %d", ret); | |
214 | return ret; | |
215 | } | |
216 | ||
217 | return msm_gem_mmap_obj(vma->vm_private_data, vma); | |
218 | } | |
219 | ||
11bac800 | 220 | int msm_gem_fault(struct vm_fault *vmf) |
c8afe684 | 221 | { |
11bac800 | 222 | struct vm_area_struct *vma = vmf->vma; |
c8afe684 | 223 | struct drm_gem_object *obj = vma->vm_private_data; |
0e08270a | 224 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
c8afe684 RC |
225 | struct page **pages; |
226 | unsigned long pfn; | |
227 | pgoff_t pgoff; | |
228 | int ret; | |
229 | ||
0e08270a SS |
230 | /* |
231 | * vm_ops.open/drm_gem_mmap_obj and close get and put | |
232 | * a reference on obj. So, we dont need to hold one here. | |
c8afe684 | 233 | */ |
0e08270a | 234 | ret = mutex_lock_interruptible(&msm_obj->lock); |
c8afe684 RC |
235 | if (ret) |
236 | goto out; | |
237 | ||
0e08270a SS |
238 | if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { |
239 | mutex_unlock(&msm_obj->lock); | |
240 | return VM_FAULT_SIGBUS; | |
241 | } | |
242 | ||
c8afe684 RC |
243 | /* make sure we have pages attached now */ |
244 | pages = get_pages(obj); | |
245 | if (IS_ERR(pages)) { | |
246 | ret = PTR_ERR(pages); | |
247 | goto out_unlock; | |
248 | } | |
249 | ||
250 | /* We don't use vmf->pgoff since that has the fake offset: */ | |
1a29d85e | 251 | pgoff = (vmf->address - vma->vm_start) >> PAGE_SHIFT; |
c8afe684 | 252 | |
871d812a | 253 | pfn = page_to_pfn(pages[pgoff]); |
c8afe684 | 254 | |
1a29d85e | 255 | VERB("Inserting %p pfn %lx, pa %lx", (void *)vmf->address, |
c8afe684 RC |
256 | pfn, pfn << PAGE_SHIFT); |
257 | ||
1a29d85e | 258 | ret = vm_insert_mixed(vma, vmf->address, __pfn_to_pfn_t(pfn, PFN_DEV)); |
c8afe684 RC |
259 | |
260 | out_unlock: | |
0e08270a | 261 | mutex_unlock(&msm_obj->lock); |
c8afe684 RC |
262 | out: |
263 | switch (ret) { | |
264 | case -EAGAIN: | |
c8afe684 RC |
265 | case 0: |
266 | case -ERESTARTSYS: | |
267 | case -EINTR: | |
505886d5 RC |
268 | case -EBUSY: |
269 | /* | |
270 | * EBUSY is ok: this just means that another thread | |
271 | * already did the job. | |
272 | */ | |
c8afe684 RC |
273 | return VM_FAULT_NOPAGE; |
274 | case -ENOMEM: | |
275 | return VM_FAULT_OOM; | |
276 | default: | |
277 | return VM_FAULT_SIGBUS; | |
278 | } | |
279 | } | |
280 | ||
281 | /** get mmap offset */ | |
282 | static uint64_t mmap_offset(struct drm_gem_object *obj) | |
283 | { | |
284 | struct drm_device *dev = obj->dev; | |
0e08270a | 285 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
c8afe684 RC |
286 | int ret; |
287 | ||
0e08270a | 288 | WARN_ON(!mutex_is_locked(&msm_obj->lock)); |
c8afe684 RC |
289 | |
290 | /* Make it mmapable */ | |
291 | ret = drm_gem_create_mmap_offset(obj); | |
292 | ||
293 | if (ret) { | |
294 | dev_err(dev->dev, "could not allocate mmap offset\n"); | |
295 | return 0; | |
296 | } | |
297 | ||
298 | return drm_vma_node_offset_addr(&obj->vma_node); | |
299 | } | |
300 | ||
301 | uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj) | |
302 | { | |
303 | uint64_t offset; | |
0e08270a SS |
304 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
305 | ||
306 | mutex_lock(&msm_obj->lock); | |
c8afe684 | 307 | offset = mmap_offset(obj); |
0e08270a | 308 | mutex_unlock(&msm_obj->lock); |
c8afe684 RC |
309 | return offset; |
310 | } | |
311 | ||
4b85f7f5 RC |
312 | static struct msm_gem_vma *add_vma(struct drm_gem_object *obj, |
313 | struct msm_gem_address_space *aspace) | |
314 | { | |
315 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
316 | struct msm_gem_vma *vma; | |
317 | ||
0e08270a SS |
318 | WARN_ON(!mutex_is_locked(&msm_obj->lock)); |
319 | ||
4b85f7f5 RC |
320 | vma = kzalloc(sizeof(*vma), GFP_KERNEL); |
321 | if (!vma) | |
322 | return ERR_PTR(-ENOMEM); | |
323 | ||
324 | vma->aspace = aspace; | |
325 | ||
326 | list_add_tail(&vma->list, &msm_obj->vmas); | |
327 | ||
328 | return vma; | |
329 | } | |
330 | ||
331 | static struct msm_gem_vma *lookup_vma(struct drm_gem_object *obj, | |
332 | struct msm_gem_address_space *aspace) | |
333 | { | |
334 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
335 | struct msm_gem_vma *vma; | |
336 | ||
0e08270a | 337 | WARN_ON(!mutex_is_locked(&msm_obj->lock)); |
4b85f7f5 RC |
338 | |
339 | list_for_each_entry(vma, &msm_obj->vmas, list) { | |
340 | if (vma->aspace == aspace) | |
341 | return vma; | |
342 | } | |
343 | ||
344 | return NULL; | |
345 | } | |
346 | ||
347 | static void del_vma(struct msm_gem_vma *vma) | |
348 | { | |
349 | if (!vma) | |
350 | return; | |
351 | ||
352 | list_del(&vma->list); | |
353 | kfree(vma); | |
354 | } | |
355 | ||
0e08270a | 356 | /* Called with msm_obj->lock locked */ |
4fe5f65e RC |
357 | static void |
358 | put_iova(struct drm_gem_object *obj) | |
359 | { | |
4fe5f65e | 360 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
4b85f7f5 | 361 | struct msm_gem_vma *vma, *tmp; |
4fe5f65e | 362 | |
0e08270a | 363 | WARN_ON(!mutex_is_locked(&msm_obj->lock)); |
4fe5f65e | 364 | |
4b85f7f5 RC |
365 | list_for_each_entry_safe(vma, tmp, &msm_obj->vmas, list) { |
366 | msm_gem_unmap_vma(vma->aspace, vma, msm_obj->sgt); | |
367 | del_vma(vma); | |
4fe5f65e RC |
368 | } |
369 | } | |
370 | ||
0e08270a SS |
371 | /* get iova, taking a reference. Should have a matching put */ |
372 | int msm_gem_get_iova(struct drm_gem_object *obj, | |
8bdcd949 | 373 | struct msm_gem_address_space *aspace, uint64_t *iova) |
c8afe684 RC |
374 | { |
375 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
4b85f7f5 | 376 | struct msm_gem_vma *vma; |
c8afe684 RC |
377 | int ret = 0; |
378 | ||
0e08270a SS |
379 | mutex_lock(&msm_obj->lock); |
380 | ||
381 | if (WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED)) { | |
382 | mutex_unlock(&msm_obj->lock); | |
383 | return -EBUSY; | |
384 | } | |
cb1e3818 | 385 | |
4b85f7f5 | 386 | vma = lookup_vma(obj, aspace); |
871d812a | 387 | |
4b85f7f5 RC |
388 | if (!vma) { |
389 | struct page **pages; | |
390 | ||
391 | vma = add_vma(obj, aspace); | |
71e3dfa1 DC |
392 | if (IS_ERR(vma)) { |
393 | ret = PTR_ERR(vma); | |
394 | goto unlock; | |
395 | } | |
4b85f7f5 RC |
396 | |
397 | pages = get_pages(obj); | |
398 | if (IS_ERR(pages)) { | |
399 | ret = PTR_ERR(pages); | |
400 | goto fail; | |
401 | } | |
871d812a | 402 | |
4b85f7f5 RC |
403 | ret = msm_gem_map_vma(aspace, vma, msm_obj->sgt, |
404 | obj->size >> PAGE_SHIFT); | |
405 | if (ret) | |
406 | goto fail; | |
c8afe684 RC |
407 | } |
408 | ||
4b85f7f5 | 409 | *iova = vma->iova; |
0e08270a SS |
410 | |
411 | mutex_unlock(&msm_obj->lock); | |
4b85f7f5 RC |
412 | return 0; |
413 | ||
414 | fail: | |
415 | del_vma(vma); | |
71e3dfa1 | 416 | unlock: |
0e08270a | 417 | mutex_unlock(&msm_obj->lock); |
c8afe684 RC |
418 | return ret; |
419 | } | |
420 | ||
2638d90a RC |
421 | /* get iova without taking a reference, used in places where you have |
422 | * already done a 'msm_gem_get_iova()'. | |
423 | */ | |
8bdcd949 RC |
424 | uint64_t msm_gem_iova(struct drm_gem_object *obj, |
425 | struct msm_gem_address_space *aspace) | |
2638d90a | 426 | { |
0e08270a | 427 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
4b85f7f5 RC |
428 | struct msm_gem_vma *vma; |
429 | ||
0e08270a | 430 | mutex_lock(&msm_obj->lock); |
4b85f7f5 | 431 | vma = lookup_vma(obj, aspace); |
0e08270a | 432 | mutex_unlock(&msm_obj->lock); |
4b85f7f5 RC |
433 | WARN_ON(!vma); |
434 | ||
435 | return vma ? vma->iova : 0; | |
2638d90a RC |
436 | } |
437 | ||
8bdcd949 RC |
438 | void msm_gem_put_iova(struct drm_gem_object *obj, |
439 | struct msm_gem_address_space *aspace) | |
c8afe684 RC |
440 | { |
441 | // XXX TODO .. | |
442 | // NOTE: probably don't need a _locked() version.. we wouldn't | |
443 | // normally unmap here, but instead just mark that it could be | |
444 | // unmapped (if the iova refcnt drops to zero), but then later | |
445 | // if another _get_iova_locked() fails we can start unmapping | |
446 | // things that are no longer needed.. | |
447 | } | |
448 | ||
449 | int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev, | |
450 | struct drm_mode_create_dumb *args) | |
451 | { | |
452 | args->pitch = align_pitch(args->width, args->bpp); | |
453 | args->size = PAGE_ALIGN(args->pitch * args->height); | |
454 | return msm_gem_new_handle(dev, file, args->size, | |
455 | MSM_BO_SCANOUT | MSM_BO_WC, &args->handle); | |
456 | } | |
457 | ||
c8afe684 RC |
458 | int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev, |
459 | uint32_t handle, uint64_t *offset) | |
460 | { | |
461 | struct drm_gem_object *obj; | |
462 | int ret = 0; | |
463 | ||
464 | /* GEM does all our handle to object mapping */ | |
a8ad0bd8 | 465 | obj = drm_gem_object_lookup(file, handle); |
c8afe684 RC |
466 | if (obj == NULL) { |
467 | ret = -ENOENT; | |
468 | goto fail; | |
469 | } | |
470 | ||
471 | *offset = msm_gem_mmap_offset(obj); | |
472 | ||
473 | drm_gem_object_unreference_unlocked(obj); | |
474 | ||
475 | fail: | |
476 | return ret; | |
477 | } | |
478 | ||
fad33f4b | 479 | static void *get_vaddr(struct drm_gem_object *obj, unsigned madv) |
c8afe684 RC |
480 | { |
481 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
0e08270a SS |
482 | int ret = 0; |
483 | ||
484 | mutex_lock(&msm_obj->lock); | |
485 | ||
fad33f4b RC |
486 | if (WARN_ON(msm_obj->madv > madv)) { |
487 | dev_err(obj->dev->dev, "Invalid madv state: %u vs %u\n", | |
488 | msm_obj->madv, madv); | |
0e08270a SS |
489 | mutex_unlock(&msm_obj->lock); |
490 | return ERR_PTR(-EBUSY); | |
491 | } | |
492 | ||
493 | /* increment vmap_count *before* vmap() call, so shrinker can | |
494 | * check vmap_count (is_vunmapable()) outside of msm_obj->lock. | |
495 | * This guarantees that we won't try to msm_gem_vunmap() this | |
496 | * same object from within the vmap() call (while we already | |
497 | * hold msm_obj->lock) | |
498 | */ | |
499 | msm_obj->vmap_count++; | |
500 | ||
c8afe684 RC |
501 | if (!msm_obj->vaddr) { |
502 | struct page **pages = get_pages(obj); | |
0e08270a SS |
503 | if (IS_ERR(pages)) { |
504 | ret = PTR_ERR(pages); | |
505 | goto fail; | |
506 | } | |
c8afe684 RC |
507 | msm_obj->vaddr = vmap(pages, obj->size >> PAGE_SHIFT, |
508 | VM_MAP, pgprot_writecombine(PAGE_KERNEL)); | |
0e08270a SS |
509 | if (msm_obj->vaddr == NULL) { |
510 | ret = -ENOMEM; | |
511 | goto fail; | |
512 | } | |
c8afe684 | 513 | } |
0e08270a SS |
514 | |
515 | mutex_unlock(&msm_obj->lock); | |
c8afe684 | 516 | return msm_obj->vaddr; |
c8afe684 | 517 | |
0e08270a SS |
518 | fail: |
519 | msm_obj->vmap_count--; | |
520 | mutex_unlock(&msm_obj->lock); | |
521 | return ERR_PTR(ret); | |
c8afe684 RC |
522 | } |
523 | ||
fad33f4b RC |
524 | void *msm_gem_get_vaddr(struct drm_gem_object *obj) |
525 | { | |
526 | return get_vaddr(obj, MSM_MADV_WILLNEED); | |
527 | } | |
528 | ||
529 | /* | |
530 | * Don't use this! It is for the very special case of dumping | |
531 | * submits from GPU hangs or faults, were the bo may already | |
532 | * be MSM_MADV_DONTNEED, but we know the buffer is still on the | |
533 | * active list. | |
534 | */ | |
535 | void *msm_gem_get_vaddr_active(struct drm_gem_object *obj) | |
536 | { | |
537 | return get_vaddr(obj, __MSM_MADV_PURGED); | |
538 | } | |
539 | ||
0e08270a | 540 | void msm_gem_put_vaddr(struct drm_gem_object *obj) |
18f23049 | 541 | { |
e1e9db2c | 542 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
0e08270a SS |
543 | |
544 | mutex_lock(&msm_obj->lock); | |
e1e9db2c RC |
545 | WARN_ON(msm_obj->vmap_count < 1); |
546 | msm_obj->vmap_count--; | |
0e08270a | 547 | mutex_unlock(&msm_obj->lock); |
18f23049 RC |
548 | } |
549 | ||
4cd33c48 RC |
550 | /* Update madvise status, returns true if not purged, else |
551 | * false or -errno. | |
552 | */ | |
553 | int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv) | |
554 | { | |
555 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
556 | ||
0e08270a SS |
557 | mutex_lock(&msm_obj->lock); |
558 | ||
4cd33c48 RC |
559 | WARN_ON(!mutex_is_locked(&obj->dev->struct_mutex)); |
560 | ||
561 | if (msm_obj->madv != __MSM_MADV_PURGED) | |
562 | msm_obj->madv = madv; | |
563 | ||
0e08270a SS |
564 | madv = msm_obj->madv; |
565 | ||
566 | mutex_unlock(&msm_obj->lock); | |
567 | ||
568 | return (madv != __MSM_MADV_PURGED); | |
4cd33c48 RC |
569 | } |
570 | ||
0e08270a | 571 | void msm_gem_purge(struct drm_gem_object *obj, enum msm_gem_lock subclass) |
68209390 RC |
572 | { |
573 | struct drm_device *dev = obj->dev; | |
574 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
575 | ||
576 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); | |
577 | WARN_ON(!is_purgeable(msm_obj)); | |
578 | WARN_ON(obj->import_attach); | |
579 | ||
0e08270a SS |
580 | mutex_lock_nested(&msm_obj->lock, subclass); |
581 | ||
68209390 RC |
582 | put_iova(obj); |
583 | ||
0e08270a | 584 | msm_gem_vunmap_locked(obj); |
68209390 RC |
585 | |
586 | put_pages(obj); | |
587 | ||
588 | msm_obj->madv = __MSM_MADV_PURGED; | |
589 | ||
590 | drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); | |
591 | drm_gem_free_mmap_offset(obj); | |
592 | ||
593 | /* Our goal here is to return as much of the memory as | |
594 | * is possible back to the system as we are called from OOM. | |
595 | * To do this we must instruct the shmfs to drop all of its | |
596 | * backing pages, *now*. | |
597 | */ | |
598 | shmem_truncate_range(file_inode(obj->filp), 0, (loff_t)-1); | |
599 | ||
600 | invalidate_mapping_pages(file_inode(obj->filp)->i_mapping, | |
601 | 0, (loff_t)-1); | |
0e08270a SS |
602 | |
603 | mutex_unlock(&msm_obj->lock); | |
68209390 RC |
604 | } |
605 | ||
0e08270a | 606 | static void msm_gem_vunmap_locked(struct drm_gem_object *obj) |
e1e9db2c RC |
607 | { |
608 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
609 | ||
0e08270a SS |
610 | WARN_ON(!mutex_is_locked(&msm_obj->lock)); |
611 | ||
e1e9db2c RC |
612 | if (!msm_obj->vaddr || WARN_ON(!is_vunmapable(msm_obj))) |
613 | return; | |
614 | ||
615 | vunmap(msm_obj->vaddr); | |
616 | msm_obj->vaddr = NULL; | |
617 | } | |
618 | ||
0e08270a SS |
619 | void msm_gem_vunmap(struct drm_gem_object *obj, enum msm_gem_lock subclass) |
620 | { | |
621 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
622 | ||
623 | mutex_lock_nested(&msm_obj->lock, subclass); | |
624 | msm_gem_vunmap_locked(obj); | |
625 | mutex_unlock(&msm_obj->lock); | |
626 | } | |
627 | ||
b6295f9a RC |
628 | /* must be called before _move_to_active().. */ |
629 | int msm_gem_sync_object(struct drm_gem_object *obj, | |
630 | struct msm_fence_context *fctx, bool exclusive) | |
631 | { | |
632 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
633 | struct reservation_object_list *fobj; | |
f54d1867 | 634 | struct dma_fence *fence; |
b6295f9a RC |
635 | int i, ret; |
636 | ||
b6295f9a RC |
637 | fobj = reservation_object_get_list(msm_obj->resv); |
638 | if (!fobj || (fobj->shared_count == 0)) { | |
639 | fence = reservation_object_get_excl(msm_obj->resv); | |
640 | /* don't need to wait on our own fences, since ring is fifo */ | |
641 | if (fence && (fence->context != fctx->context)) { | |
f54d1867 | 642 | ret = dma_fence_wait(fence, true); |
b6295f9a RC |
643 | if (ret) |
644 | return ret; | |
645 | } | |
646 | } | |
647 | ||
648 | if (!exclusive || !fobj) | |
649 | return 0; | |
650 | ||
651 | for (i = 0; i < fobj->shared_count; i++) { | |
652 | fence = rcu_dereference_protected(fobj->shared[i], | |
653 | reservation_object_held(msm_obj->resv)); | |
654 | if (fence->context != fctx->context) { | |
f54d1867 | 655 | ret = dma_fence_wait(fence, true); |
b6295f9a RC |
656 | if (ret) |
657 | return ret; | |
658 | } | |
659 | } | |
660 | ||
661 | return 0; | |
662 | } | |
663 | ||
7198e6b0 | 664 | void msm_gem_move_to_active(struct drm_gem_object *obj, |
f54d1867 | 665 | struct msm_gpu *gpu, bool exclusive, struct dma_fence *fence) |
7198e6b0 RC |
666 | { |
667 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
4cd33c48 | 668 | WARN_ON(msm_obj->madv != MSM_MADV_WILLNEED); |
7198e6b0 | 669 | msm_obj->gpu = gpu; |
b6295f9a RC |
670 | if (exclusive) |
671 | reservation_object_add_excl_fence(msm_obj->resv, fence); | |
bf6811f3 | 672 | else |
b6295f9a | 673 | reservation_object_add_shared_fence(msm_obj->resv, fence); |
7198e6b0 RC |
674 | list_del_init(&msm_obj->mm_list); |
675 | list_add_tail(&msm_obj->mm_list, &gpu->active_list); | |
676 | } | |
677 | ||
678 | void msm_gem_move_to_inactive(struct drm_gem_object *obj) | |
679 | { | |
680 | struct drm_device *dev = obj->dev; | |
681 | struct msm_drm_private *priv = dev->dev_private; | |
682 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
683 | ||
684 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); | |
685 | ||
686 | msm_obj->gpu = NULL; | |
7198e6b0 RC |
687 | list_del_init(&msm_obj->mm_list); |
688 | list_add_tail(&msm_obj->mm_list, &priv->inactive_list); | |
7198e6b0 RC |
689 | } |
690 | ||
b6295f9a | 691 | int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout) |
7198e6b0 | 692 | { |
7198e6b0 | 693 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
b6295f9a | 694 | bool write = !!(op & MSM_PREP_WRITE); |
f755e227 CW |
695 | unsigned long remain = |
696 | op & MSM_PREP_NOSYNC ? 0 : timeout_to_jiffies(timeout); | |
697 | long ret; | |
698 | ||
699 | ret = reservation_object_wait_timeout_rcu(msm_obj->resv, write, | |
700 | true, remain); | |
701 | if (ret == 0) | |
702 | return remain == 0 ? -EBUSY : -ETIMEDOUT; | |
703 | else if (ret < 0) | |
704 | return ret; | |
7198e6b0 RC |
705 | |
706 | /* TODO cache maintenance */ | |
c8afe684 | 707 | |
b6295f9a | 708 | return 0; |
7198e6b0 | 709 | } |
c8afe684 | 710 | |
7198e6b0 RC |
711 | int msm_gem_cpu_fini(struct drm_gem_object *obj) |
712 | { | |
713 | /* TODO cache maintenance */ | |
c8afe684 RC |
714 | return 0; |
715 | } | |
716 | ||
717 | #ifdef CONFIG_DEBUG_FS | |
f54d1867 | 718 | static void describe_fence(struct dma_fence *fence, const char *type, |
b6295f9a RC |
719 | struct seq_file *m) |
720 | { | |
f54d1867 | 721 | if (!dma_fence_is_signaled(fence)) |
b6295f9a RC |
722 | seq_printf(m, "\t%9s: %s %s seq %u\n", type, |
723 | fence->ops->get_driver_name(fence), | |
724 | fence->ops->get_timeline_name(fence), | |
725 | fence->seqno); | |
726 | } | |
727 | ||
c8afe684 RC |
728 | void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m) |
729 | { | |
c8afe684 | 730 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
b6295f9a RC |
731 | struct reservation_object *robj = msm_obj->resv; |
732 | struct reservation_object_list *fobj; | |
f54d1867 | 733 | struct dma_fence *fence; |
4b85f7f5 | 734 | struct msm_gem_vma *vma; |
c8afe684 | 735 | uint64_t off = drm_vma_node_start(&obj->vma_node); |
4cd33c48 | 736 | const char *madv; |
c8afe684 | 737 | |
0e08270a | 738 | mutex_lock(&msm_obj->lock); |
b6295f9a | 739 | |
4cd33c48 RC |
740 | switch (msm_obj->madv) { |
741 | case __MSM_MADV_PURGED: | |
742 | madv = " purged"; | |
743 | break; | |
744 | case MSM_MADV_DONTNEED: | |
745 | madv = " purgeable"; | |
746 | break; | |
747 | case MSM_MADV_WILLNEED: | |
748 | default: | |
749 | madv = ""; | |
750 | break; | |
751 | } | |
752 | ||
667ce33e | 753 | seq_printf(m, "%08x: %c %2d (%2d) %08llx %p\t", |
7198e6b0 | 754 | msm_obj->flags, is_active(msm_obj) ? 'A' : 'I', |
2c935bc5 | 755 | obj->name, kref_read(&obj->refcount), |
667ce33e RC |
756 | off, msm_obj->vaddr); |
757 | ||
4b85f7f5 RC |
758 | /* FIXME: we need to print the address space here too */ |
759 | list_for_each_entry(vma, &msm_obj->vmas, list) | |
760 | seq_printf(m, " %08llx", vma->iova); | |
667ce33e RC |
761 | |
762 | seq_printf(m, " %zu%s\n", obj->size, madv); | |
b6295f9a RC |
763 | |
764 | rcu_read_lock(); | |
765 | fobj = rcu_dereference(robj->fence); | |
766 | if (fobj) { | |
767 | unsigned int i, shared_count = fobj->shared_count; | |
768 | ||
769 | for (i = 0; i < shared_count; i++) { | |
770 | fence = rcu_dereference(fobj->shared[i]); | |
771 | describe_fence(fence, "Shared", m); | |
772 | } | |
773 | } | |
774 | ||
775 | fence = rcu_dereference(robj->fence_excl); | |
776 | if (fence) | |
777 | describe_fence(fence, "Exclusive", m); | |
778 | rcu_read_unlock(); | |
0e08270a SS |
779 | |
780 | mutex_unlock(&msm_obj->lock); | |
c8afe684 RC |
781 | } |
782 | ||
783 | void msm_gem_describe_objects(struct list_head *list, struct seq_file *m) | |
784 | { | |
785 | struct msm_gem_object *msm_obj; | |
786 | int count = 0; | |
787 | size_t size = 0; | |
788 | ||
789 | list_for_each_entry(msm_obj, list, mm_list) { | |
790 | struct drm_gem_object *obj = &msm_obj->base; | |
791 | seq_printf(m, " "); | |
792 | msm_gem_describe(obj, m); | |
793 | count++; | |
794 | size += obj->size; | |
795 | } | |
796 | ||
797 | seq_printf(m, "Total %d objects, %zu bytes\n", count, size); | |
798 | } | |
799 | #endif | |
800 | ||
801 | void msm_gem_free_object(struct drm_gem_object *obj) | |
802 | { | |
803 | struct drm_device *dev = obj->dev; | |
804 | struct msm_gem_object *msm_obj = to_msm_bo(obj); | |
c8afe684 RC |
805 | |
806 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); | |
807 | ||
7198e6b0 RC |
808 | /* object should not be on active list: */ |
809 | WARN_ON(is_active(msm_obj)); | |
810 | ||
c8afe684 RC |
811 | list_del(&msm_obj->mm_list); |
812 | ||
0e08270a SS |
813 | mutex_lock(&msm_obj->lock); |
814 | ||
4fe5f65e | 815 | put_iova(obj); |
c8afe684 | 816 | |
05b84911 RC |
817 | if (obj->import_attach) { |
818 | if (msm_obj->vaddr) | |
819 | dma_buf_vunmap(obj->import_attach->dmabuf, msm_obj->vaddr); | |
820 | ||
821 | /* Don't drop the pages for imported dmabuf, as they are not | |
822 | * ours, just free the array we allocated: | |
823 | */ | |
824 | if (msm_obj->pages) | |
2098105e | 825 | kvfree(msm_obj->pages); |
c8afe684 | 826 | |
f28730c8 | 827 | drm_prime_gem_destroy(obj, msm_obj->sgt); |
05b84911 | 828 | } else { |
0e08270a | 829 | msm_gem_vunmap_locked(obj); |
05b84911 RC |
830 | put_pages(obj); |
831 | } | |
c8afe684 | 832 | |
7198e6b0 RC |
833 | if (msm_obj->resv == &msm_obj->_resv) |
834 | reservation_object_fini(msm_obj->resv); | |
835 | ||
c8afe684 RC |
836 | drm_gem_object_release(obj); |
837 | ||
0e08270a | 838 | mutex_unlock(&msm_obj->lock); |
c8afe684 RC |
839 | kfree(msm_obj); |
840 | } | |
841 | ||
842 | /* convenience method to construct a GEM buffer object, and userspace handle */ | |
843 | int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, | |
844 | uint32_t size, uint32_t flags, uint32_t *handle) | |
845 | { | |
846 | struct drm_gem_object *obj; | |
847 | int ret; | |
848 | ||
c8afe684 RC |
849 | obj = msm_gem_new(dev, size, flags); |
850 | ||
c8afe684 RC |
851 | if (IS_ERR(obj)) |
852 | return PTR_ERR(obj); | |
853 | ||
854 | ret = drm_gem_handle_create(file, obj, handle); | |
855 | ||
856 | /* drop reference from allocate - handle holds it now */ | |
857 | drm_gem_object_unreference_unlocked(obj); | |
858 | ||
859 | return ret; | |
860 | } | |
861 | ||
05b84911 RC |
862 | static int msm_gem_new_impl(struct drm_device *dev, |
863 | uint32_t size, uint32_t flags, | |
79f0e202 | 864 | struct reservation_object *resv, |
0e08270a SS |
865 | struct drm_gem_object **obj, |
866 | bool struct_mutex_locked) | |
c8afe684 RC |
867 | { |
868 | struct msm_drm_private *priv = dev->dev_private; | |
869 | struct msm_gem_object *msm_obj; | |
c8afe684 RC |
870 | |
871 | switch (flags & MSM_BO_CACHE_MASK) { | |
872 | case MSM_BO_UNCACHED: | |
873 | case MSM_BO_CACHED: | |
874 | case MSM_BO_WC: | |
875 | break; | |
876 | default: | |
877 | dev_err(dev->dev, "invalid cache flag: %x\n", | |
878 | (flags & MSM_BO_CACHE_MASK)); | |
05b84911 | 879 | return -EINVAL; |
c8afe684 RC |
880 | } |
881 | ||
667ce33e | 882 | msm_obj = kzalloc(sizeof(*msm_obj), GFP_KERNEL); |
05b84911 RC |
883 | if (!msm_obj) |
884 | return -ENOMEM; | |
c8afe684 | 885 | |
0e08270a SS |
886 | mutex_init(&msm_obj->lock); |
887 | ||
c8afe684 | 888 | msm_obj->flags = flags; |
4cd33c48 | 889 | msm_obj->madv = MSM_MADV_WILLNEED; |
c8afe684 | 890 | |
79f0e202 RC |
891 | if (resv) { |
892 | msm_obj->resv = resv; | |
893 | } else { | |
894 | msm_obj->resv = &msm_obj->_resv; | |
895 | reservation_object_init(msm_obj->resv); | |
896 | } | |
c8afe684 | 897 | |
7198e6b0 | 898 | INIT_LIST_HEAD(&msm_obj->submit_entry); |
4b85f7f5 RC |
899 | INIT_LIST_HEAD(&msm_obj->vmas); |
900 | ||
0e08270a SS |
901 | if (struct_mutex_locked) { |
902 | WARN_ON(!mutex_is_locked(&dev->struct_mutex)); | |
903 | list_add_tail(&msm_obj->mm_list, &priv->inactive_list); | |
904 | } else { | |
905 | mutex_lock(&dev->struct_mutex); | |
906 | list_add_tail(&msm_obj->mm_list, &priv->inactive_list); | |
907 | mutex_unlock(&dev->struct_mutex); | |
908 | } | |
c8afe684 | 909 | |
05b84911 RC |
910 | *obj = &msm_obj->base; |
911 | ||
912 | return 0; | |
913 | } | |
914 | ||
0e08270a SS |
915 | static struct drm_gem_object *_msm_gem_new(struct drm_device *dev, |
916 | uint32_t size, uint32_t flags, bool struct_mutex_locked) | |
05b84911 | 917 | { |
f4839bd5 | 918 | struct msm_drm_private *priv = dev->dev_private; |
871d812a | 919 | struct drm_gem_object *obj = NULL; |
f4839bd5 | 920 | bool use_vram = false; |
05b84911 RC |
921 | int ret; |
922 | ||
05b84911 RC |
923 | size = PAGE_ALIGN(size); |
924 | ||
f4839bd5 RC |
925 | if (!iommu_present(&platform_bus_type)) |
926 | use_vram = true; | |
927 | else if ((flags & MSM_BO_STOLEN) && priv->vram.size) | |
928 | use_vram = true; | |
929 | ||
930 | if (WARN_ON(use_vram && !priv->vram.size)) | |
931 | return ERR_PTR(-EINVAL); | |
932 | ||
1a5dff5d JC |
933 | /* Disallow zero sized objects as they make the underlying |
934 | * infrastructure grumpy | |
935 | */ | |
936 | if (size == 0) | |
937 | return ERR_PTR(-EINVAL); | |
938 | ||
0e08270a | 939 | ret = msm_gem_new_impl(dev, size, flags, NULL, &obj, struct_mutex_locked); |
05b84911 RC |
940 | if (ret) |
941 | goto fail; | |
942 | ||
f4839bd5 | 943 | if (use_vram) { |
4b85f7f5 | 944 | struct msm_gem_vma *vma; |
f4839bd5 | 945 | struct page **pages; |
b3949a9a HV |
946 | struct msm_gem_object *msm_obj = to_msm_bo(obj); |
947 | ||
948 | mutex_lock(&msm_obj->lock); | |
f4839bd5 | 949 | |
4b85f7f5 | 950 | vma = add_vma(obj, NULL); |
b3949a9a | 951 | mutex_unlock(&msm_obj->lock); |
4b85f7f5 RC |
952 | if (IS_ERR(vma)) { |
953 | ret = PTR_ERR(vma); | |
954 | goto fail; | |
955 | } | |
956 | ||
957 | to_msm_bo(obj)->vram_node = &vma->node; | |
958 | ||
f4839bd5 RC |
959 | drm_gem_private_object_init(dev, obj, size); |
960 | ||
f4839bd5 RC |
961 | pages = get_pages(obj); |
962 | if (IS_ERR(pages)) { | |
963 | ret = PTR_ERR(pages); | |
964 | goto fail; | |
965 | } | |
4b85f7f5 RC |
966 | |
967 | vma->iova = physaddr(obj); | |
f4839bd5 | 968 | } else { |
871d812a RC |
969 | ret = drm_gem_object_init(dev, obj, size); |
970 | if (ret) | |
971 | goto fail; | |
871d812a | 972 | } |
05b84911 RC |
973 | |
974 | return obj; | |
975 | ||
976 | fail: | |
0e08270a | 977 | drm_gem_object_unreference_unlocked(obj); |
05b84911 RC |
978 | return ERR_PTR(ret); |
979 | } | |
980 | ||
0e08270a SS |
981 | struct drm_gem_object *msm_gem_new_locked(struct drm_device *dev, |
982 | uint32_t size, uint32_t flags) | |
983 | { | |
984 | return _msm_gem_new(dev, size, flags, true); | |
985 | } | |
986 | ||
987 | struct drm_gem_object *msm_gem_new(struct drm_device *dev, | |
988 | uint32_t size, uint32_t flags) | |
989 | { | |
990 | return _msm_gem_new(dev, size, flags, false); | |
991 | } | |
992 | ||
05b84911 | 993 | struct drm_gem_object *msm_gem_import(struct drm_device *dev, |
79f0e202 | 994 | struct dma_buf *dmabuf, struct sg_table *sgt) |
05b84911 RC |
995 | { |
996 | struct msm_gem_object *msm_obj; | |
997 | struct drm_gem_object *obj; | |
79f0e202 | 998 | uint32_t size; |
05b84911 RC |
999 | int ret, npages; |
1000 | ||
871d812a RC |
1001 | /* if we don't have IOMMU, don't bother pretending we can import: */ |
1002 | if (!iommu_present(&platform_bus_type)) { | |
1003 | dev_err(dev->dev, "cannot import without IOMMU\n"); | |
1004 | return ERR_PTR(-EINVAL); | |
1005 | } | |
1006 | ||
79f0e202 | 1007 | size = PAGE_ALIGN(dmabuf->size); |
05b84911 | 1008 | |
0e08270a | 1009 | ret = msm_gem_new_impl(dev, size, MSM_BO_WC, dmabuf->resv, &obj, false); |
05b84911 RC |
1010 | if (ret) |
1011 | goto fail; | |
1012 | ||
1013 | drm_gem_private_object_init(dev, obj, size); | |
1014 | ||
1015 | npages = size / PAGE_SIZE; | |
1016 | ||
1017 | msm_obj = to_msm_bo(obj); | |
0e08270a | 1018 | mutex_lock(&msm_obj->lock); |
05b84911 | 1019 | msm_obj->sgt = sgt; |
2098105e | 1020 | msm_obj->pages = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL); |
05b84911 | 1021 | if (!msm_obj->pages) { |
0e08270a | 1022 | mutex_unlock(&msm_obj->lock); |
05b84911 RC |
1023 | ret = -ENOMEM; |
1024 | goto fail; | |
1025 | } | |
1026 | ||
1027 | ret = drm_prime_sg_to_page_addr_arrays(sgt, msm_obj->pages, NULL, npages); | |
0e08270a SS |
1028 | if (ret) { |
1029 | mutex_unlock(&msm_obj->lock); | |
05b84911 | 1030 | goto fail; |
0e08270a | 1031 | } |
05b84911 | 1032 | |
0e08270a | 1033 | mutex_unlock(&msm_obj->lock); |
c8afe684 RC |
1034 | return obj; |
1035 | ||
1036 | fail: | |
e73a8569 | 1037 | drm_gem_object_unreference_unlocked(obj); |
c8afe684 RC |
1038 | return ERR_PTR(ret); |
1039 | } | |
8223286d JC |
1040 | |
1041 | static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, | |
1042 | uint32_t flags, struct msm_gem_address_space *aspace, | |
1043 | struct drm_gem_object **bo, uint64_t *iova, bool locked) | |
1044 | { | |
1045 | void *vaddr; | |
1046 | struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); | |
1047 | int ret; | |
1048 | ||
1049 | if (IS_ERR(obj)) | |
1050 | return ERR_CAST(obj); | |
1051 | ||
1052 | if (iova) { | |
1053 | ret = msm_gem_get_iova(obj, aspace, iova); | |
1054 | if (ret) { | |
1055 | drm_gem_object_unreference(obj); | |
1056 | return ERR_PTR(ret); | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | vaddr = msm_gem_get_vaddr(obj); | |
c9811d0f | 1061 | if (IS_ERR(vaddr)) { |
8223286d JC |
1062 | msm_gem_put_iova(obj, aspace); |
1063 | drm_gem_object_unreference(obj); | |
c9811d0f | 1064 | return ERR_CAST(vaddr); |
8223286d JC |
1065 | } |
1066 | ||
1067 | if (bo) | |
1068 | *bo = obj; | |
1069 | ||
1070 | return vaddr; | |
1071 | } | |
1072 | ||
1073 | void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, | |
1074 | uint32_t flags, struct msm_gem_address_space *aspace, | |
1075 | struct drm_gem_object **bo, uint64_t *iova) | |
1076 | { | |
1077 | return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); | |
1078 | } | |
1079 | ||
1080 | void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, | |
1081 | uint32_t flags, struct msm_gem_address_space *aspace, | |
1082 | struct drm_gem_object **bo, uint64_t *iova) | |
1083 | { | |
1084 | return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); | |
1085 | } |