diff options
author | Alex Waterman <alexw@nvidia.com> | 2017-04-24 18:26:00 -0400 |
---|---|---|
committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2017-05-19 18:34:06 -0400 |
commit | 014ace5a85f274de7debb4c6168d69c803445e19 (patch) | |
tree | 4028be3294b95e38659f1ebba4a14457748e59f1 /drivers/gpu/nvgpu/common/linux | |
parent | d37e8f7dcf190f31f9c0c12583db2bb0c0d313c0 (diff) |
gpu: nvgpu: Split VM implementation out
This patch begins splitting out the VM implementation from mm_gk20a.c and
moves it to common/linux/vm.c and common/mm/vm.c. This split is necessary
because the VM code has two portions: first, an interface for the OS
specific code to use (i.e userspace mappings), and second, a set of APIs
for the driver to use (init, cleanup, etc) which are not OS specific.
This is only the beginning of the split - there's still a lot of things
that need to be carefully moved around.
JIRA NVGPU-12
JIRA NVGPU-30
Change-Id: I3b57cba245d7daf9e4326a143b9c6217e0f28c96
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1477743
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/common/linux')
-rw-r--r-- | drivers/gpu/nvgpu/common/linux/vm.c | 421 | ||||
-rw-r--r-- | drivers/gpu/nvgpu/common/linux/vm_priv.h | 36 |
2 files changed, 455 insertions, 2 deletions
diff --git a/drivers/gpu/nvgpu/common/linux/vm.c b/drivers/gpu/nvgpu/common/linux/vm.c new file mode 100644 index 00000000..8b9d6f96 --- /dev/null +++ b/drivers/gpu/nvgpu/common/linux/vm.c | |||
@@ -0,0 +1,421 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved. | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify it | ||
5 | * under the terms and conditions of the GNU General Public License, | ||
6 | * version 2, as published by the Free Software Foundation. | ||
7 | * | ||
8 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
11 | * more details. | ||
12 | * | ||
13 | * You should have received a copy of the GNU General Public License | ||
14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
15 | */ | ||
16 | |||
17 | #include <linux/dma-buf.h> | ||
18 | #include <linux/scatterlist.h> | ||
19 | |||
20 | #include <nvgpu/log.h> | ||
21 | #include <nvgpu/lock.h> | ||
22 | #include <nvgpu/rbtree.h> | ||
23 | #include <nvgpu/page_allocator.h> | ||
24 | |||
25 | #include "gk20a/gk20a.h" | ||
26 | #include "gk20a/mm_gk20a.h" | ||
27 | |||
28 | #include "vm_priv.h" | ||
29 | |||
30 | static struct nvgpu_mapped_buf *__nvgpu_vm_find_mapped_buf_reverse( | ||
31 | struct vm_gk20a *vm, struct dma_buf *dmabuf, u32 kind) | ||
32 | { | ||
33 | struct nvgpu_rbtree_node *node = NULL; | ||
34 | struct nvgpu_rbtree_node *root = vm->mapped_buffers; | ||
35 | |||
36 | nvgpu_rbtree_enum_start(0, &node, root); | ||
37 | |||
38 | while (node) { | ||
39 | struct nvgpu_mapped_buf *mapped_buffer = | ||
40 | mapped_buffer_from_rbtree_node(node); | ||
41 | |||
42 | if (mapped_buffer->dmabuf == dmabuf && | ||
43 | kind == mapped_buffer->kind) | ||
44 | return mapped_buffer; | ||
45 | |||
46 | nvgpu_rbtree_enum_next(&node, node); | ||
47 | } | ||
48 | |||
49 | return NULL; | ||
50 | } | ||
51 | |||
52 | /* | ||
53 | * Determine alignment for a passed buffer. Necessary since the buffer may | ||
54 | * appear big to map with large pages but the SGL may have chunks that are not | ||
55 | * aligned on a 64/128kB large page boundary. | ||
56 | */ | ||
57 | static u64 nvgpu_get_buffer_alignment(struct gk20a *g, struct scatterlist *sgl, | ||
58 | enum nvgpu_aperture aperture) | ||
59 | { | ||
60 | u64 align = 0, chunk_align = 0; | ||
61 | u64 buf_addr; | ||
62 | |||
63 | if (aperture == APERTURE_VIDMEM) { | ||
64 | struct nvgpu_page_alloc *alloc = get_vidmem_page_alloc(sgl); | ||
65 | struct page_alloc_chunk *chunk = NULL; | ||
66 | |||
67 | nvgpu_list_for_each_entry(chunk, &alloc->alloc_chunks, | ||
68 | page_alloc_chunk, list_entry) { | ||
69 | chunk_align = 1ULL << __ffs(chunk->base | | ||
70 | chunk->length); | ||
71 | |||
72 | if (align) | ||
73 | align = min(align, chunk_align); | ||
74 | else | ||
75 | align = chunk_align; | ||
76 | } | ||
77 | |||
78 | return align; | ||
79 | } | ||
80 | |||
81 | buf_addr = (u64)sg_dma_address(sgl); | ||
82 | |||
83 | if (g->mm.bypass_smmu || buf_addr == DMA_ERROR_CODE || !buf_addr) { | ||
84 | while (sgl) { | ||
85 | buf_addr = (u64)sg_phys(sgl); | ||
86 | chunk_align = 1ULL << __ffs(buf_addr | | ||
87 | (u64)sgl->length); | ||
88 | |||
89 | if (align) | ||
90 | align = min(align, chunk_align); | ||
91 | else | ||
92 | align = chunk_align; | ||
93 | sgl = sg_next(sgl); | ||
94 | } | ||
95 | |||
96 | return align; | ||
97 | } | ||
98 | |||
99 | align = 1ULL << __ffs(buf_addr); | ||
100 | |||
101 | return align; | ||
102 | } | ||
103 | |||
104 | /* | ||
105 | * vm->update_gmmu_lock must be held. This checks to see if we already have | ||
106 | * mapped the passed buffer into this VM. If so, just return the existing | ||
107 | * mapping address. | ||
108 | */ | ||
109 | static u64 __nvgpu_vm_find_mapping(struct vm_gk20a *vm, | ||
110 | struct dma_buf *dmabuf, | ||
111 | u64 offset_align, | ||
112 | u32 flags, | ||
113 | int kind, | ||
114 | bool user_mapped, | ||
115 | int rw_flag) | ||
116 | { | ||
117 | struct gk20a *g = gk20a_from_vm(vm); | ||
118 | struct nvgpu_mapped_buf *mapped_buffer = NULL; | ||
119 | |||
120 | if (flags & NVGPU_AS_MAP_BUFFER_FLAGS_FIXED_OFFSET) { | ||
121 | mapped_buffer = __nvgpu_vm_find_mapped_buf(vm, offset_align); | ||
122 | if (!mapped_buffer) | ||
123 | return 0; | ||
124 | |||
125 | if (mapped_buffer->dmabuf != dmabuf || | ||
126 | mapped_buffer->kind != (u32)kind) | ||
127 | return 0; | ||
128 | } else { | ||
129 | mapped_buffer = | ||
130 | __nvgpu_vm_find_mapped_buf_reverse(vm, dmabuf, kind); | ||
131 | if (!mapped_buffer) | ||
132 | return 0; | ||
133 | } | ||
134 | |||
135 | if (mapped_buffer->flags != flags) | ||
136 | return 0; | ||
137 | |||
138 | /* mark the buffer as used */ | ||
139 | if (user_mapped) { | ||
140 | if (mapped_buffer->user_mapped == 0) | ||
141 | vm->num_user_mapped_buffers++; | ||
142 | mapped_buffer->user_mapped++; | ||
143 | |||
144 | /* If the mapping comes from user space, we own | ||
145 | * the handle ref. Since we reuse an | ||
146 | * existing mapping here, we need to give back those | ||
147 | * refs once in order not to leak. | ||
148 | */ | ||
149 | if (mapped_buffer->own_mem_ref) | ||
150 | dma_buf_put(mapped_buffer->dmabuf); | ||
151 | else | ||
152 | mapped_buffer->own_mem_ref = true; | ||
153 | } | ||
154 | kref_get(&mapped_buffer->ref); | ||
155 | |||
156 | nvgpu_log(g, gpu_dbg_map, | ||
157 | "gv: 0x%04x_%08x + 0x%-7zu " | ||
158 | "[dma: 0x%02x_%08x, pa: 0x%02x_%08x] " | ||
159 | "pgsz=%-3dKb as=%-2d ctags=%d start=%d " | ||
160 | "flags=0x%x apt=%s (reused)", | ||
161 | u64_hi32(mapped_buffer->addr), u64_lo32(mapped_buffer->addr), | ||
162 | dmabuf->size, | ||
163 | u64_hi32((u64)sg_dma_address(mapped_buffer->sgt->sgl)), | ||
164 | u64_lo32((u64)sg_dma_address(mapped_buffer->sgt->sgl)), | ||
165 | u64_hi32((u64)sg_phys(mapped_buffer->sgt->sgl)), | ||
166 | u64_lo32((u64)sg_phys(mapped_buffer->sgt->sgl)), | ||
167 | vm->gmmu_page_sizes[mapped_buffer->pgsz_idx] >> 10, | ||
168 | vm_aspace_id(vm), | ||
169 | mapped_buffer->ctag_lines, mapped_buffer->ctag_offset, | ||
170 | mapped_buffer->flags, | ||
171 | nvgpu_aperture_str(gk20a_dmabuf_aperture(g, dmabuf))); | ||
172 | |||
173 | return mapped_buffer->addr; | ||
174 | } | ||
175 | |||
176 | u64 nvgpu_vm_map(struct vm_gk20a *vm, | ||
177 | struct dma_buf *dmabuf, | ||
178 | u64 offset_align, | ||
179 | u32 flags, | ||
180 | int kind, | ||
181 | bool user_mapped, | ||
182 | int rw_flag, | ||
183 | u64 buffer_offset, | ||
184 | u64 mapping_size, | ||
185 | struct vm_gk20a_mapping_batch *batch) | ||
186 | { | ||
187 | struct gk20a *g = gk20a_from_vm(vm); | ||
188 | struct gk20a_comptag_allocator *ctag_allocator = &g->gr.comp_tags; | ||
189 | struct nvgpu_mapped_buf *mapped_buffer = NULL; | ||
190 | bool inserted = false, va_allocated = false; | ||
191 | u64 map_offset = 0; | ||
192 | int err = 0; | ||
193 | struct buffer_attrs bfr = {NULL}; | ||
194 | struct gk20a_comptags comptags; | ||
195 | bool clear_ctags = false; | ||
196 | struct scatterlist *sgl; | ||
197 | u64 ctag_map_win_size = 0; | ||
198 | u32 ctag_map_win_ctagline = 0; | ||
199 | struct vm_reserved_va_node *va_node = NULL; | ||
200 | u32 ctag_offset; | ||
201 | enum nvgpu_aperture aperture; | ||
202 | |||
203 | if (user_mapped && vm->userspace_managed && | ||
204 | !(flags & NVGPU_AS_MAP_BUFFER_FLAGS_FIXED_OFFSET)) { | ||
205 | nvgpu_err(g, "non-fixed-offset mapping not available on " | ||
206 | "userspace managed address spaces"); | ||
207 | return -EFAULT; | ||
208 | } | ||
209 | |||
210 | nvgpu_mutex_acquire(&vm->update_gmmu_lock); | ||
211 | |||
212 | /* check if this buffer is already mapped */ | ||
213 | if (!vm->userspace_managed) { | ||
214 | map_offset = __nvgpu_vm_find_mapping( | ||
215 | vm, dmabuf, offset_align, | ||
216 | flags, kind, | ||
217 | user_mapped, rw_flag); | ||
218 | if (map_offset) { | ||
219 | nvgpu_mutex_release(&vm->update_gmmu_lock); | ||
220 | return map_offset; | ||
221 | } | ||
222 | } | ||
223 | |||
224 | /* pin buffer to get phys/iovmm addr */ | ||
225 | bfr.sgt = gk20a_mm_pin(g->dev, dmabuf); | ||
226 | if (IS_ERR(bfr.sgt)) { | ||
227 | /* Falling back to physical is actually possible | ||
228 | * here in many cases if we use 4K phys pages in the | ||
229 | * gmmu. However we have some regions which require | ||
230 | * contig regions to work properly (either phys-contig | ||
231 | * or contig through smmu io_vaspace). Until we can | ||
232 | * track the difference between those two cases we have | ||
233 | * to fail the mapping when we run out of SMMU space. | ||
234 | */ | ||
235 | nvgpu_warn(g, "oom allocating tracking buffer"); | ||
236 | goto clean_up; | ||
237 | } | ||
238 | |||
239 | bfr.kind_v = kind; | ||
240 | bfr.size = dmabuf->size; | ||
241 | sgl = bfr.sgt->sgl; | ||
242 | |||
243 | aperture = gk20a_dmabuf_aperture(g, dmabuf); | ||
244 | if (aperture == APERTURE_INVALID) { | ||
245 | err = -EINVAL; | ||
246 | goto clean_up; | ||
247 | } | ||
248 | |||
249 | if (flags & NVGPU_AS_MAP_BUFFER_FLAGS_FIXED_OFFSET) | ||
250 | map_offset = offset_align; | ||
251 | |||
252 | bfr.align = nvgpu_get_buffer_alignment(g, sgl, aperture); | ||
253 | bfr.pgsz_idx = __get_pte_size(vm, map_offset, | ||
254 | min_t(u64, bfr.size, bfr.align)); | ||
255 | mapping_size = mapping_size ? mapping_size : bfr.size; | ||
256 | |||
257 | /* Check if we should use a fixed offset for mapping this buffer */ | ||
258 | if (flags & NVGPU_AS_MAP_BUFFER_FLAGS_FIXED_OFFSET) { | ||
259 | err = validate_fixed_buffer(vm, &bfr, | ||
260 | offset_align, mapping_size, | ||
261 | &va_node); | ||
262 | if (err) | ||
263 | goto clean_up; | ||
264 | |||
265 | map_offset = offset_align; | ||
266 | va_allocated = false; | ||
267 | } else | ||
268 | va_allocated = true; | ||
269 | |||
270 | err = setup_buffer_kind_and_compression(vm, flags, &bfr, bfr.pgsz_idx); | ||
271 | if (unlikely(err)) { | ||
272 | nvgpu_err(g, "failure setting up kind and compression"); | ||
273 | goto clean_up; | ||
274 | } | ||
275 | |||
276 | /* bar1 and pmu vm don't need ctag */ | ||
277 | if (!vm->enable_ctag) | ||
278 | bfr.ctag_lines = 0; | ||
279 | |||
280 | gk20a_get_comptags(g->dev, dmabuf, &comptags); | ||
281 | |||
282 | /* ensure alignment to compression page size if compression enabled */ | ||
283 | if (bfr.ctag_offset) | ||
284 | mapping_size = ALIGN(mapping_size, | ||
285 | g->ops.fb.compression_page_size(g)); | ||
286 | |||
287 | if (bfr.ctag_lines && !comptags.lines) { | ||
288 | const bool user_mappable = | ||
289 | !!(flags & NVGPU_AS_MAP_BUFFER_FLAGS_MAPPABLE_COMPBITS); | ||
290 | |||
291 | /* allocate compression resources if needed */ | ||
292 | err = gk20a_alloc_comptags(g, g->dev, dmabuf, ctag_allocator, | ||
293 | bfr.ctag_lines, user_mappable, | ||
294 | &ctag_map_win_size, | ||
295 | &ctag_map_win_ctagline); | ||
296 | if (err) { | ||
297 | /* ok to fall back here if we ran out */ | ||
298 | /* TBD: we can partially alloc ctags as well... */ | ||
299 | bfr.kind_v = bfr.uc_kind_v; | ||
300 | } else { | ||
301 | gk20a_get_comptags(g->dev, dmabuf, &comptags); | ||
302 | |||
303 | if (g->ops.ltc.cbc_ctrl) | ||
304 | g->ops.ltc.cbc_ctrl(g, gk20a_cbc_op_clear, | ||
305 | comptags.offset, | ||
306 | comptags.offset + | ||
307 | comptags.allocated_lines - 1); | ||
308 | else | ||
309 | clear_ctags = true; | ||
310 | } | ||
311 | } | ||
312 | |||
313 | /* store the comptag info */ | ||
314 | bfr.ctag_offset = comptags.offset; | ||
315 | bfr.ctag_lines = comptags.lines; | ||
316 | bfr.ctag_allocated_lines = comptags.allocated_lines; | ||
317 | bfr.ctag_user_mappable = comptags.user_mappable; | ||
318 | |||
319 | /* | ||
320 | * Calculate comptag index for this mapping. Differs in | ||
321 | * case of partial mapping. | ||
322 | */ | ||
323 | ctag_offset = comptags.offset; | ||
324 | if (ctag_offset) | ||
325 | ctag_offset += buffer_offset >> | ||
326 | ilog2(g->ops.fb.compression_page_size(g)); | ||
327 | |||
328 | /* update gmmu ptes */ | ||
329 | map_offset = g->ops.mm.gmmu_map(vm, map_offset, | ||
330 | bfr.sgt, | ||
331 | buffer_offset, /* sg offset */ | ||
332 | mapping_size, | ||
333 | bfr.pgsz_idx, | ||
334 | bfr.kind_v, | ||
335 | ctag_offset, | ||
336 | flags, rw_flag, | ||
337 | clear_ctags, | ||
338 | false, | ||
339 | false, | ||
340 | batch, | ||
341 | aperture); | ||
342 | if (!map_offset) | ||
343 | goto clean_up; | ||
344 | |||
345 | mapped_buffer = nvgpu_kzalloc(g, sizeof(*mapped_buffer)); | ||
346 | if (!mapped_buffer) { | ||
347 | nvgpu_warn(g, "oom allocating tracking buffer"); | ||
348 | goto clean_up; | ||
349 | } | ||
350 | mapped_buffer->dmabuf = dmabuf; | ||
351 | mapped_buffer->sgt = bfr.sgt; | ||
352 | mapped_buffer->addr = map_offset; | ||
353 | mapped_buffer->size = mapping_size; | ||
354 | mapped_buffer->pgsz_idx = bfr.pgsz_idx; | ||
355 | mapped_buffer->ctag_offset = bfr.ctag_offset; | ||
356 | mapped_buffer->ctag_lines = bfr.ctag_lines; | ||
357 | mapped_buffer->ctag_allocated_lines = bfr.ctag_allocated_lines; | ||
358 | mapped_buffer->ctags_mappable = bfr.ctag_user_mappable; | ||
359 | mapped_buffer->ctag_map_win_size = ctag_map_win_size; | ||
360 | mapped_buffer->ctag_map_win_ctagline = ctag_map_win_ctagline; | ||
361 | mapped_buffer->vm = vm; | ||
362 | mapped_buffer->flags = flags; | ||
363 | mapped_buffer->kind = kind; | ||
364 | mapped_buffer->va_allocated = va_allocated; | ||
365 | mapped_buffer->user_mapped = user_mapped ? 1 : 0; | ||
366 | mapped_buffer->own_mem_ref = user_mapped; | ||
367 | nvgpu_init_list_node(&mapped_buffer->buffer_list); | ||
368 | kref_init(&mapped_buffer->ref); | ||
369 | |||
370 | err = nvgpu_insert_mapped_buf(vm, mapped_buffer); | ||
371 | if (err) { | ||
372 | nvgpu_err(g, "failed to insert into mapped buffer tree"); | ||
373 | goto clean_up; | ||
374 | } | ||
375 | inserted = true; | ||
376 | if (user_mapped) | ||
377 | vm->num_user_mapped_buffers++; | ||
378 | |||
379 | if (va_node) { | ||
380 | nvgpu_list_add_tail(&mapped_buffer->buffer_list, | ||
381 | &va_node->buffer_list_head); | ||
382 | mapped_buffer->va_node = va_node; | ||
383 | } | ||
384 | |||
385 | nvgpu_mutex_release(&vm->update_gmmu_lock); | ||
386 | |||
387 | return map_offset; | ||
388 | |||
389 | clean_up: | ||
390 | if (inserted) { | ||
391 | nvgpu_remove_mapped_buf(vm, mapped_buffer); | ||
392 | if (user_mapped) | ||
393 | vm->num_user_mapped_buffers--; | ||
394 | } | ||
395 | nvgpu_kfree(g, mapped_buffer); | ||
396 | if (va_allocated) | ||
397 | gk20a_vm_free_va(vm, map_offset, bfr.size, bfr.pgsz_idx); | ||
398 | if (!IS_ERR(bfr.sgt)) | ||
399 | gk20a_mm_unpin(g->dev, dmabuf, bfr.sgt); | ||
400 | |||
401 | nvgpu_mutex_release(&vm->update_gmmu_lock); | ||
402 | nvgpu_log_info(g, "err=%d\n", err); | ||
403 | return 0; | ||
404 | } | ||
405 | |||
406 | void nvgpu_vm_unmap(struct vm_gk20a *vm, u64 offset) | ||
407 | { | ||
408 | struct gk20a *g = vm->mm->g; | ||
409 | struct nvgpu_mapped_buf *mapped_buffer; | ||
410 | |||
411 | nvgpu_mutex_acquire(&vm->update_gmmu_lock); | ||
412 | mapped_buffer = __nvgpu_vm_find_mapped_buf(vm, offset); | ||
413 | if (!mapped_buffer) { | ||
414 | nvgpu_mutex_release(&vm->update_gmmu_lock); | ||
415 | nvgpu_err(g, "invalid addr to unmap 0x%llx", offset); | ||
416 | return; | ||
417 | } | ||
418 | |||
419 | kref_put(&mapped_buffer->ref, gk20a_vm_unmap_locked_kref); | ||
420 | nvgpu_mutex_release(&vm->update_gmmu_lock); | ||
421 | } | ||
diff --git a/drivers/gpu/nvgpu/common/linux/vm_priv.h b/drivers/gpu/nvgpu/common/linux/vm_priv.h index c0fb0ffe..9e064d76 100644 --- a/drivers/gpu/nvgpu/common/linux/vm_priv.h +++ b/drivers/gpu/nvgpu/common/linux/vm_priv.h | |||
@@ -25,12 +25,24 @@ struct dma_buf; | |||
25 | struct vm_gk20a; | 25 | struct vm_gk20a; |
26 | struct vm_gk20a_mapping_batch; | 26 | struct vm_gk20a_mapping_batch; |
27 | 27 | ||
28 | struct buffer_attrs { | ||
29 | struct sg_table *sgt; | ||
30 | u64 size; | ||
31 | u64 align; | ||
32 | u32 ctag_offset; | ||
33 | u32 ctag_lines; | ||
34 | u32 ctag_allocated_lines; | ||
35 | int pgsz_idx; | ||
36 | u8 kind_v; | ||
37 | u8 uc_kind_v; | ||
38 | bool ctag_user_mappable; | ||
39 | }; | ||
40 | |||
28 | u64 nvgpu_vm_map(struct vm_gk20a *vm, | 41 | u64 nvgpu_vm_map(struct vm_gk20a *vm, |
29 | struct dma_buf *dmabuf, | 42 | struct dma_buf *dmabuf, |
30 | u64 offset_align, | 43 | u64 offset_align, |
31 | u32 flags /*NVGPU_AS_MAP_BUFFER_FLAGS_*/, | 44 | u32 flags, |
32 | int kind, | 45 | int kind, |
33 | struct sg_table **sgt, | ||
34 | bool user_mapped, | 46 | bool user_mapped, |
35 | int rw_flag, | 47 | int rw_flag, |
36 | u64 buffer_offset, | 48 | u64 buffer_offset, |
@@ -59,4 +71,24 @@ void nvgpu_vm_unmap(struct vm_gk20a *vm, u64 offset); | |||
59 | int nvgpu_vm_find_buffer(struct vm_gk20a *vm, u64 gpu_va, | 71 | int nvgpu_vm_find_buffer(struct vm_gk20a *vm, u64 gpu_va, |
60 | struct dma_buf **dmabuf, | 72 | struct dma_buf **dmabuf, |
61 | u64 *offset); | 73 | u64 *offset); |
74 | |||
75 | enum nvgpu_aperture gk20a_dmabuf_aperture(struct gk20a *g, | ||
76 | struct dma_buf *dmabuf); | ||
77 | int validate_fixed_buffer(struct vm_gk20a *vm, | ||
78 | struct buffer_attrs *bfr, | ||
79 | u64 map_offset, u64 map_size, | ||
80 | struct vm_reserved_va_node **pva_node); | ||
81 | int setup_buffer_kind_and_compression(struct vm_gk20a *vm, | ||
82 | u32 flags, | ||
83 | struct buffer_attrs *bfr, | ||
84 | enum gmmu_pgsz_gk20a pgsz_idx); | ||
85 | int gk20a_alloc_comptags(struct gk20a *g, | ||
86 | struct device *dev, | ||
87 | struct dma_buf *dmabuf, | ||
88 | struct gk20a_comptag_allocator *allocator, | ||
89 | u32 lines, bool user_mappable, | ||
90 | u64 *ctag_map_win_size, | ||
91 | u32 *ctag_map_win_ctagline); | ||
92 | void gk20a_vm_unmap_locked_kref(struct kref *ref); | ||
93 | |||
62 | #endif | 94 | #endif |