Bug Summary

File:dev/pci/drm/amd/amdgpu/amdgpu_vram_mgr.c
Warning:line 494, column 15
The left operand of '!=' is a garbage value

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name amdgpu_vram_mgr.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -ffreestanding -mcmodel=kernel -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -target-feature -sse2 -target-feature -sse -target-feature -3dnow -target-feature -mmx -target-feature +save-args -target-feature +retpoline-external-thunk -disable-red-zone -no-implicit-float -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -nostdsysteminc -nobuiltininc -resource-dir /usr/local/llvm16/lib/clang/16 -I /usr/src/sys -I /usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -I /usr/src/sys/arch -I /usr/src/sys/dev/pci/drm/include -I /usr/src/sys/dev/pci/drm/include/uapi -I /usr/src/sys/dev/pci/drm/amd/include/asic_reg -I /usr/src/sys/dev/pci/drm/amd/include -I /usr/src/sys/dev/pci/drm/amd/amdgpu -I /usr/src/sys/dev/pci/drm/amd/display -I /usr/src/sys/dev/pci/drm/amd/display/include -I /usr/src/sys/dev/pci/drm/amd/display/dc -I /usr/src/sys/dev/pci/drm/amd/display/amdgpu_dm -I /usr/src/sys/dev/pci/drm/amd/pm/inc -I /usr/src/sys/dev/pci/drm/amd/pm/legacy-dpm -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu11 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu12 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu13 -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/inc -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/hwmgr -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/smumgr -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/inc/pmfw_if -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc/hw -I /usr/src/sys/dev/pci/drm/amd/display/dc/clk_mgr -I /usr/src/sys/dev/pci/drm/amd/display/modules/inc -I /usr/src/sys/dev/pci/drm/amd/display/modules/hdcp -I /usr/src/sys/dev/pci/drm/amd/display/dmub/inc -I /usr/src/sys/dev/pci/drm/i915 -D DDB -D DIAGNOSTIC -D KTRACE -D ACCOUNTING -D KMEMSTATS -D PTRACE -D POOL_DEBUG -D CRYPTO -D SYSVMSG -D SYSVSEM -D SYSVSHM -D UVM_SWAP_ENCRYPT -D FFS -D FFS2 -D FFS_SOFTUPDATES -D UFS_DIRHASH -D QUOTA -D EXT2FS -D MFS -D NFSCLIENT -D NFSSERVER -D CD9660 -D UDF -D MSDOSFS -D FIFO -D FUSE -D SOCKET_SPLICE -D TCP_ECN -D TCP_SIGNATURE -D INET6 -D IPSEC -D PPP_BSDCOMP -D PPP_DEFLATE -D PIPEX -D MROUTING -D MPLS -D BOOT_CONFIG -D USER_PCICONF -D APERTURE -D MTRR -D NTFS -D SUSPEND -D HIBERNATE -D PCIVERBOSE -D USBVERBOSE -D WSDISPLAY_COMPAT_USL -D WSDISPLAY_COMPAT_RAWKBD -D WSDISPLAY_DEFAULTSCREENS=6 -D X86EMU -D ONEWIREVERBOSE -D MULTIPROCESSOR -D MAXUSERS=80 -D _KERNEL -O2 -Wno-pointer-sign -Wno-address-of-packed-member -Wno-constant-conversion -Wno-unused-but-set-variable -Wno-gnu-folding-constant -fdebug-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/scan/2024-01-11-110808-61670-1 -x c /usr/src/sys/dev/pci/drm/amd/amdgpu/amdgpu_vram_mgr.c
1/*
2 * Copyright 2016 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Christian König
23 */
24
25#include <linux/dma-mapping.h>
26#include <drm/ttm/ttm_range_manager.h>
27
28#include "amdgpu.h"
29#include "amdgpu_vm.h"
30#include "amdgpu_res_cursor.h"
31#include "amdgpu_atomfirmware.h"
32#include "atom.h"
33
34struct amdgpu_vram_reservation {
35 u64 start;
36 u64 size;
37 struct list_head allocated;
38 struct list_head blocks;
39};
40
41static inline struct amdgpu_vram_mgr *
42to_vram_mgr(struct ttm_resource_manager *man)
43{
44 return container_of(man, struct amdgpu_vram_mgr, manager)({ const __typeof( ((struct amdgpu_vram_mgr *)0)->manager )
*__mptr = (man); (struct amdgpu_vram_mgr *)( (char *)__mptr -
__builtin_offsetof(struct amdgpu_vram_mgr, manager) );});
45}
46
47static inline struct amdgpu_device *
48to_amdgpu_device(struct amdgpu_vram_mgr *mgr)
49{
50 return container_of(mgr, struct amdgpu_device, mman.vram_mgr)({ const __typeof( ((struct amdgpu_device *)0)->mman.vram_mgr
) *__mptr = (mgr); (struct amdgpu_device *)( (char *)__mptr -
__builtin_offsetof(struct amdgpu_device, mman.vram_mgr) );});
51}
52
53static inline struct drm_buddy_block *
54amdgpu_vram_mgr_first_block(struct list_head *list)
55{
56 return list_first_entry_or_null(list, struct drm_buddy_block, link)(list_empty(list) ? ((void *)0) : ({ const __typeof( ((struct
drm_buddy_block *)0)->link ) *__mptr = ((list)->next);
(struct drm_buddy_block *)( (char *)__mptr - __builtin_offsetof
(struct drm_buddy_block, link) );}));
57}
58
59static inline bool_Bool amdgpu_is_vram_mgr_blocks_contiguous(struct list_head *head)
60{
61 struct drm_buddy_block *block;
62 u64 start, size;
63
64 block = amdgpu_vram_mgr_first_block(head);
65 if (!block)
66 return false0;
67
68 while (head != block->link.next) {
69 start = amdgpu_vram_mgr_block_start(block);
70 size = amdgpu_vram_mgr_block_size(block);
71
72 block = list_entry(block->link.next, struct drm_buddy_block, link)({ const __typeof( ((struct drm_buddy_block *)0)->link ) *
__mptr = (block->link.next); (struct drm_buddy_block *)( (
char *)__mptr - __builtin_offsetof(struct drm_buddy_block, link
) );});
73 if (start + size != amdgpu_vram_mgr_block_start(block))
74 return false0;
75 }
76
77 return true1;
78}
79
80
81
82/**
83 * DOC: mem_info_vram_total
84 *
85 * The amdgpu driver provides a sysfs API for reporting current total VRAM
86 * available on the device
87 * The file mem_info_vram_total is used for this and returns the total
88 * amount of VRAM in bytes
89 */
90static ssize_t amdgpu_mem_info_vram_total_show(struct device *dev,
91 struct device_attribute *attr, char *buf)
92{
93 struct drm_device *ddev = dev_get_drvdata(dev);
94 struct amdgpu_device *adev = drm_to_adev(ddev);
95
96 return sysfs_emit(buf, "%llu\n", adev->gmc.real_vram_size);
97}
98
99/**
100 * DOC: mem_info_vis_vram_total
101 *
102 * The amdgpu driver provides a sysfs API for reporting current total
103 * visible VRAM available on the device
104 * The file mem_info_vis_vram_total is used for this and returns the total
105 * amount of visible VRAM in bytes
106 */
107static ssize_t amdgpu_mem_info_vis_vram_total_show(struct device *dev,
108 struct device_attribute *attr, char *buf)
109{
110 struct drm_device *ddev = dev_get_drvdata(dev);
111 struct amdgpu_device *adev = drm_to_adev(ddev);
112
113 return sysfs_emit(buf, "%llu\n", adev->gmc.visible_vram_size);
114}
115
116/**
117 * DOC: mem_info_vram_used
118 *
119 * The amdgpu driver provides a sysfs API for reporting current total VRAM
120 * available on the device
121 * The file mem_info_vram_used is used for this and returns the total
122 * amount of currently used VRAM in bytes
123 */
124static ssize_t amdgpu_mem_info_vram_used_show(struct device *dev,
125 struct device_attribute *attr,
126 char *buf)
127{
128 struct drm_device *ddev = dev_get_drvdata(dev);
129 struct amdgpu_device *adev = drm_to_adev(ddev);
130 struct ttm_resource_manager *man = &adev->mman.vram_mgr.manager;
131
132 return sysfs_emit(buf, "%llu\n", ttm_resource_manager_usage(man));
133}
134
135/**
136 * DOC: mem_info_vis_vram_used
137 *
138 * The amdgpu driver provides a sysfs API for reporting current total of
139 * used visible VRAM
140 * The file mem_info_vis_vram_used is used for this and returns the total
141 * amount of currently used visible VRAM in bytes
142 */
143static ssize_t amdgpu_mem_info_vis_vram_used_show(struct device *dev,
144 struct device_attribute *attr,
145 char *buf)
146{
147 struct drm_device *ddev = dev_get_drvdata(dev);
148 struct amdgpu_device *adev = drm_to_adev(ddev);
149
150 return sysfs_emit(buf, "%llu\n",
151 amdgpu_vram_mgr_vis_usage(&adev->mman.vram_mgr));
152}
153
154/**
155 * DOC: mem_info_vram_vendor
156 *
157 * The amdgpu driver provides a sysfs API for reporting the vendor of the
158 * installed VRAM
159 * The file mem_info_vram_vendor is used for this and returns the name of the
160 * vendor.
161 */
162static ssize_t amdgpu_mem_info_vram_vendor(struct device *dev,
163 struct device_attribute *attr,
164 char *buf)
165{
166 struct drm_device *ddev = dev_get_drvdata(dev);
167 struct amdgpu_device *adev = drm_to_adev(ddev);
168
169 switch (adev->gmc.vram_vendor) {
170 case SAMSUNG0x1:
171 return sysfs_emit(buf, "samsung\n");
172 case INFINEON0x2:
173 return sysfs_emit(buf, "infineon\n");
174 case ELPIDA0x3:
175 return sysfs_emit(buf, "elpida\n");
176 case ETRON0x4:
177 return sysfs_emit(buf, "etron\n");
178 case NANYA0x5:
179 return sysfs_emit(buf, "nanya\n");
180 case HYNIX0x6:
181 return sysfs_emit(buf, "hynix\n");
182 case MOSEL0x7:
183 return sysfs_emit(buf, "mosel\n");
184 case WINBOND0x8:
185 return sysfs_emit(buf, "winbond\n");
186 case ESMT0x9:
187 return sysfs_emit(buf, "esmt\n");
188 case MICRON0xF:
189 return sysfs_emit(buf, "micron\n");
190 default:
191 return sysfs_emit(buf, "unknown\n");
192 }
193}
194
195static DEVICE_ATTR(mem_info_vram_total, S_IRUGO,struct device_attribute dev_attr_mem_info_vram_total
196 amdgpu_mem_info_vram_total_show, NULL)struct device_attribute dev_attr_mem_info_vram_total;
197static DEVICE_ATTR(mem_info_vis_vram_total, S_IRUGO,struct device_attribute dev_attr_mem_info_vis_vram_total
198 amdgpu_mem_info_vis_vram_total_show,NULL)struct device_attribute dev_attr_mem_info_vis_vram_total;
199static DEVICE_ATTR(mem_info_vram_used, S_IRUGO,struct device_attribute dev_attr_mem_info_vram_used
200 amdgpu_mem_info_vram_used_show, NULL)struct device_attribute dev_attr_mem_info_vram_used;
201static DEVICE_ATTR(mem_info_vis_vram_used, S_IRUGO,struct device_attribute dev_attr_mem_info_vis_vram_used
202 amdgpu_mem_info_vis_vram_used_show, NULL)struct device_attribute dev_attr_mem_info_vis_vram_used;
203static DEVICE_ATTR(mem_info_vram_vendor, S_IRUGO,struct device_attribute dev_attr_mem_info_vram_vendor
204 amdgpu_mem_info_vram_vendor, NULL)struct device_attribute dev_attr_mem_info_vram_vendor;
205
206static struct attribute *amdgpu_vram_mgr_attributes[] = {
207 &dev_attr_mem_info_vram_total.attr,
208 &dev_attr_mem_info_vis_vram_total.attr,
209 &dev_attr_mem_info_vram_used.attr,
210 &dev_attr_mem_info_vis_vram_used.attr,
211 &dev_attr_mem_info_vram_vendor.attr,
212 NULL((void *)0)
213};
214
215const struct attribute_group amdgpu_vram_mgr_attr_group = {
216 .attrs = amdgpu_vram_mgr_attributes
217};
218
219/**
220 * amdgpu_vram_mgr_vis_size - Calculate visible block size
221 *
222 * @adev: amdgpu_device pointer
223 * @block: DRM BUDDY block structure
224 *
225 * Calculate how many bytes of the DRM BUDDY block are inside visible VRAM
226 */
227static u64 amdgpu_vram_mgr_vis_size(struct amdgpu_device *adev,
228 struct drm_buddy_block *block)
229{
230 u64 start = amdgpu_vram_mgr_block_start(block);
231 u64 end = start + amdgpu_vram_mgr_block_size(block);
232
233 if (start >= adev->gmc.visible_vram_size)
234 return 0;
235
236 return (end > adev->gmc.visible_vram_size ?
237 adev->gmc.visible_vram_size : end) - start;
238}
239
240/**
241 * amdgpu_vram_mgr_bo_visible_size - CPU visible BO size
242 *
243 * @bo: &amdgpu_bo buffer object (must be in VRAM)
244 *
245 * Returns:
246 * How much of the given &amdgpu_bo buffer object lies in CPU visible VRAM.
247 */
248u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo)
249{
250 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
251 struct ttm_resource *res = bo->tbo.resource;
252 struct amdgpu_vram_mgr_resource *vres = to_amdgpu_vram_mgr_resource(res);
253 struct drm_buddy_block *block;
254 u64 usage = 0;
255
256 if (amdgpu_gmc_vram_full_visible(&adev->gmc))
257 return amdgpu_bo_size(bo);
258
259 if (res->start >= adev->gmc.visible_vram_size >> PAGE_SHIFT12)
260 return 0;
261
262 list_for_each_entry(block, &vres->blocks, link)for (block = ({ const __typeof( ((__typeof(*block) *)0)->link
) *__mptr = ((&vres->blocks)->next); (__typeof(*block
) *)( (char *)__mptr - __builtin_offsetof(__typeof(*block), link
) );}); &block->link != (&vres->blocks); block =
({ const __typeof( ((__typeof(*block) *)0)->link ) *__mptr
= (block->link.next); (__typeof(*block) *)( (char *)__mptr
- __builtin_offsetof(__typeof(*block), link) );}))
263 usage += amdgpu_vram_mgr_vis_size(adev, block);
264
265 return usage;
266}
267
268/* Commit the reservation of VRAM pages */
269static void amdgpu_vram_mgr_do_reserve(struct ttm_resource_manager *man)
270{
271 struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
272 struct amdgpu_device *adev = to_amdgpu_device(mgr);
273 struct drm_buddy *mm = &mgr->mm;
274 struct amdgpu_vram_reservation *rsv, *temp;
275 struct drm_buddy_block *block;
276 uint64_t vis_usage;
277
278 list_for_each_entry_safe(rsv, temp, &mgr->reservations_pending, blocks)for (rsv = ({ const __typeof( ((__typeof(*rsv) *)0)->blocks
) *__mptr = ((&mgr->reservations_pending)->next); (
__typeof(*rsv) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*rsv), blocks) );}), temp = ({ const __typeof( ((__typeof(*rsv
) *)0)->blocks ) *__mptr = (rsv->blocks.next); (__typeof
(*rsv) *)( (char *)__mptr - __builtin_offsetof(__typeof(*rsv)
, blocks) );}); &rsv->blocks != (&mgr->reservations_pending
); rsv = temp, temp = ({ const __typeof( ((__typeof(*temp) *)
0)->blocks ) *__mptr = (temp->blocks.next); (__typeof(*
temp) *)( (char *)__mptr - __builtin_offsetof(__typeof(*temp)
, blocks) );})) {
279 if (drm_buddy_alloc_blocks(mm, rsv->start, rsv->start + rsv->size,
280 rsv->size, mm->chunk_size, &rsv->allocated,
281 DRM_BUDDY_RANGE_ALLOCATION(1 << 0)))
282 continue;
283
284 block = amdgpu_vram_mgr_first_block(&rsv->allocated);
285 if (!block)
286 continue;
287
288 dev_dbg(adev->dev, "Reservation 0x%llx - %lld, Succeeded\n",do { } while(0)
289 rsv->start, rsv->size)do { } while(0);
290
291 vis_usage = amdgpu_vram_mgr_vis_size(adev, block);
292 atomic64_add(vis_usage, &mgr->vis_usage)__sync_fetch_and_add_8(&mgr->vis_usage, vis_usage);
293 spin_lock(&man->bdev->lru_lock)mtx_enter(&man->bdev->lru_lock);
294 man->usage += rsv->size;
295 spin_unlock(&man->bdev->lru_lock)mtx_leave(&man->bdev->lru_lock);
296 list_move(&rsv->blocks, &mgr->reserved_pages);
297 }
298}
299
300/**
301 * amdgpu_vram_mgr_reserve_range - Reserve a range from VRAM
302 *
303 * @mgr: amdgpu_vram_mgr pointer
304 * @start: start address of the range in VRAM
305 * @size: size of the range
306 *
307 * Reserve memory from start address with the specified size in VRAM
308 */
309int amdgpu_vram_mgr_reserve_range(struct amdgpu_vram_mgr *mgr,
310 uint64_t start, uint64_t size)
311{
312 struct amdgpu_vram_reservation *rsv;
313
314 rsv = kzalloc(sizeof(*rsv), GFP_KERNEL(0x0001 | 0x0004));
315 if (!rsv)
316 return -ENOMEM12;
317
318 INIT_LIST_HEAD(&rsv->allocated);
319 INIT_LIST_HEAD(&rsv->blocks);
320
321 rsv->start = start;
322 rsv->size = size;
323
324 mutex_lock(&mgr->lock)rw_enter_write(&mgr->lock);
325 list_add_tail(&rsv->blocks, &mgr->reservations_pending);
326 amdgpu_vram_mgr_do_reserve(&mgr->manager);
327 mutex_unlock(&mgr->lock)rw_exit_write(&mgr->lock);
328
329 return 0;
330}
331
332/**
333 * amdgpu_vram_mgr_query_page_status - query the reservation status
334 *
335 * @mgr: amdgpu_vram_mgr pointer
336 * @start: start address of a page in VRAM
337 *
338 * Returns:
339 * -EBUSY: the page is still hold and in pending list
340 * 0: the page has been reserved
341 * -ENOENT: the input page is not a reservation
342 */
343int amdgpu_vram_mgr_query_page_status(struct amdgpu_vram_mgr *mgr,
344 uint64_t start)
345{
346 struct amdgpu_vram_reservation *rsv;
347 int ret;
348
349 mutex_lock(&mgr->lock)rw_enter_write(&mgr->lock);
350
351 list_for_each_entry(rsv, &mgr->reservations_pending, blocks)for (rsv = ({ const __typeof( ((__typeof(*rsv) *)0)->blocks
) *__mptr = ((&mgr->reservations_pending)->next); (
__typeof(*rsv) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*rsv), blocks) );}); &rsv->blocks != (&mgr->reservations_pending
); rsv = ({ const __typeof( ((__typeof(*rsv) *)0)->blocks )
*__mptr = (rsv->blocks.next); (__typeof(*rsv) *)( (char *
)__mptr - __builtin_offsetof(__typeof(*rsv), blocks) );})) {
352 if (rsv->start <= start &&
353 (start < (rsv->start + rsv->size))) {
354 ret = -EBUSY16;
355 goto out;
356 }
357 }
358
359 list_for_each_entry(rsv, &mgr->reserved_pages, blocks)for (rsv = ({ const __typeof( ((__typeof(*rsv) *)0)->blocks
) *__mptr = ((&mgr->reserved_pages)->next); (__typeof
(*rsv) *)( (char *)__mptr - __builtin_offsetof(__typeof(*rsv)
, blocks) );}); &rsv->blocks != (&mgr->reserved_pages
); rsv = ({ const __typeof( ((__typeof(*rsv) *)0)->blocks )
*__mptr = (rsv->blocks.next); (__typeof(*rsv) *)( (char *
)__mptr - __builtin_offsetof(__typeof(*rsv), blocks) );})) {
360 if (rsv->start <= start &&
361 (start < (rsv->start + rsv->size))) {
362 ret = 0;
363 goto out;
364 }
365 }
366
367 ret = -ENOENT2;
368out:
369 mutex_unlock(&mgr->lock)rw_exit_write(&mgr->lock);
370 return ret;
371}
372
373/**
374 * amdgpu_vram_mgr_new - allocate new ranges
375 *
376 * @man: TTM memory type manager
377 * @tbo: TTM BO we need this range for
378 * @place: placement flags and restrictions
379 * @res: the resulting mem object
380 *
381 * Allocate VRAM for the given BO.
382 */
383static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man,
384 struct ttm_buffer_object *tbo,
385 const struct ttm_place *place,
386 struct ttm_resource **res)
387{
388 u64 vis_usage = 0, max_bytes, cur_size, min_block_size;
1
'cur_size' declared without an initial value
→
389 struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
390 struct amdgpu_device *adev = to_amdgpu_device(mgr);
391 struct amdgpu_vram_mgr_resource *vres;
392 u64 size, remaining_size, lpfn, fpfn;
393 struct drm_buddy *mm = &mgr->mm;
394 struct drm_buddy_block *block;
395 unsigned long pages_per_block;
396 int r;
397
398 lpfn = (u64)place->lpfn << PAGE_SHIFT12;
399 if (!lpfn)
2
←
Assuming 'lpfn' is not equal to 0
→
3
←
Taking false branch
→
400 lpfn = man->size;
401
402 fpfn = (u64)place->fpfn << PAGE_SHIFT12;
403
404 max_bytes = adev->gmc.mc_vram_size;
405 if (tbo->type != ttm_bo_type_kernel)
4
←
Assuming field 'type' is equal to ttm_bo_type_kernel
→
5
←
Taking false branch
→
406 max_bytes -= AMDGPU_VM_RESERVED_VRAM(8ULL << 20);
407
408 if (place->flags & TTM_PL_FLAG_CONTIGUOUS(1 << 0)) {
6
←
Assuming the condition is true
→
7
←
Taking true branch
→
409 pages_per_block = ~0ul;
410 } else {
411#ifdef CONFIG_TRANSPARENT_HUGEPAGE
412 pages_per_block = HPAGE_PMD_NR;
413#else
414 /* default to 2MB */
415 pages_per_block = 2UL << (20UL - PAGE_SHIFT12);
416#endif
417 pages_per_block = max_t(uint32_t, pages_per_block,({ uint32_t __max_a = (pages_per_block); uint32_t __max_b = (
tbo->page_alignment); __max_a > __max_b ? __max_a : __max_b
; })
418 tbo->page_alignment)({ uint32_t __max_a = (pages_per_block); uint32_t __max_b = (
tbo->page_alignment); __max_a > __max_b ? __max_a : __max_b
; });
419 }
420
421 vres = kzalloc(sizeof(*vres), GFP_KERNEL(0x0001 | 0x0004));
422 if (!vres)
8
←
Assuming 'vres' is non-null
→
9
←
Taking false branch
→
423 return -ENOMEM12;
424
425 ttm_resource_init(tbo, place, &vres->base);
426
427 /* bail out quickly if there's likely not enough VRAM for this BO */
428 if (ttm_resource_manager_usage(man) > max_bytes) {
10
←
Assuming the condition is false
→
11
←
Taking false branch
→
429 r = -ENOSPC28;
430 goto error_fini;
431 }
432
433 INIT_LIST_HEAD(&vres->blocks);
434
435 if (place->flags & TTM_PL_FLAG_TOPDOWN(1 << 1))
12
←
Assuming the condition is false
→
436 vres->flags |= DRM_BUDDY_TOPDOWN_ALLOCATION(1 << 1);
437
438 if (fpfn || lpfn != mgr->mm.size)
13
←
Assuming 'fpfn' is not equal to 0
→
439 /* Allocate blocks in desired range */
440 vres->flags |= DRM_BUDDY_RANGE_ALLOCATION(1 << 0);
441
442 remaining_size = (u64)vres->base.num_pages << PAGE_SHIFT12;
443
444 mutex_lock(&mgr->lock)rw_enter_write(&mgr->lock);
445 while (remaining_size) {
14
←
Loop condition is false. Execution continues on line 492
→
446 if (tbo->page_alignment)
447 min_block_size = (u64)tbo->page_alignment << PAGE_SHIFT12;
448 else
449 min_block_size = mgr->default_page_size;
450
451 BUG_ON(min_block_size < mm->chunk_size)((!(min_block_size < mm->chunk_size)) ? (void)0 : __assert
("diagnostic ", "/usr/src/sys/dev/pci/drm/amd/amdgpu/amdgpu_vram_mgr.c"
, 451, "!(min_block_size < mm->chunk_size)"));
452
453 /* Limit maximum size to 2GiB due to SG table limitations */
454 size = min(remaining_size, 2ULL << 30)(((remaining_size)<(2ULL << 30))?(remaining_size):(2ULL
<< 30));
455
456 if (size >= (u64)pages_per_block << PAGE_SHIFT12)
457 min_block_size = (u64)pages_per_block << PAGE_SHIFT12;
458
459 cur_size = size;
460
461 if (fpfn + size != (u64)place->lpfn << PAGE_SHIFT12) {
462 /*
463 * Except for actual range allocation, modify the size and
464 * min_block_size conforming to continuous flag enablement
465 */
466 if (place->flags & TTM_PL_FLAG_CONTIGUOUS(1 << 0)) {
467 size = roundup_pow_of_two(size);
468 min_block_size = size;
469 /*
470 * Modify the size value if size is not
471 * aligned with min_block_size
472 */
473 } else if (!IS_ALIGNED(size, min_block_size)(((size) & ((min_block_size) - 1)) == 0)) {
474 size = round_up(size, min_block_size)((((size) + ((min_block_size) - 1)) / (min_block_size)) * (min_block_size
));
475 }
476 }
477
478 r = drm_buddy_alloc_blocks(mm, fpfn,
479 lpfn,
480 size,
481 min_block_size,
482 &vres->blocks,
483 vres->flags);
484 if (unlikely(r)__builtin_expect(!!(r), 0))
485 goto error_free_blocks;
486
487 if (size > remaining_size)
488 remaining_size = 0;
489 else
490 remaining_size -= size;
491 }
492 mutex_unlock(&mgr->lock)rw_exit_write(&mgr->lock);
493
494 if (cur_size != size) {
15
←
The left operand of '!=' is a garbage value
495 struct drm_buddy_block *block;
496 struct list_head *trim_list;
497 u64 original_size;
498 DRM_LIST_HEAD(temp)struct list_head temp = { &(temp), &(temp) };
499
500 trim_list = &vres->blocks;
501 original_size = (u64)vres->base.num_pages << PAGE_SHIFT12;
502
503 /*
504 * If size value is rounded up to min_block_size, trim the last
505 * block to the required size
506 */
507 if (!list_is_singular(&vres->blocks)) {
508 block = list_last_entry(&vres->blocks, typeof(*block), link)({ const __typeof( ((typeof(*block) *)0)->link ) *__mptr =
((&vres->blocks)->prev); (typeof(*block) *)( (char
*)__mptr - __builtin_offsetof(typeof(*block), link) );});
509 list_move_tail(&block->link, &temp);
510 trim_list = &temp;
511 /*
512 * Compute the original_size value by subtracting the
513 * last block size with (aligned size - original size)
514 */
515 original_size = amdgpu_vram_mgr_block_size(block) - (size - cur_size);
516 }
517
518 mutex_lock(&mgr->lock)rw_enter_write(&mgr->lock);
519 drm_buddy_block_trim(mm,
520 original_size,
521 trim_list);
522 mutex_unlock(&mgr->lock)rw_exit_write(&mgr->lock);
523
524 if (!list_empty(&temp))
525 list_splice_tail(trim_list, &vres->blocks);
526 }
527
528 vres->base.start = 0;
529 list_for_each_entry(block, &vres->blocks, link)for (block = ({ const __typeof( ((__typeof(*block) *)0)->link
) *__mptr = ((&vres->blocks)->next); (__typeof(*block
) *)( (char *)__mptr - __builtin_offsetof(__typeof(*block), link
) );}); &block->link != (&vres->blocks); block =
({ const __typeof( ((__typeof(*block) *)0)->link ) *__mptr
= (block->link.next); (__typeof(*block) *)( (char *)__mptr
- __builtin_offsetof(__typeof(*block), link) );})) {
530 unsigned long start;
531
532 start = amdgpu_vram_mgr_block_start(block) +
533 amdgpu_vram_mgr_block_size(block);
534 start >>= PAGE_SHIFT12;
535
536 if (start > vres->base.num_pages)
537 start -= vres->base.num_pages;
538 else
539 start = 0;
540 vres->base.start = max(vres->base.start, start)(((vres->base.start)>(start))?(vres->base.start):(start
));
541
542 vis_usage += amdgpu_vram_mgr_vis_size(adev, block);
543 }
544
545 if (amdgpu_is_vram_mgr_blocks_contiguous(&vres->blocks))
546 vres->base.placement |= TTM_PL_FLAG_CONTIGUOUS(1 << 0);
547
548 if (adev->gmc.xgmi.connected_to_cpu)
549 vres->base.bus.caching = ttm_cached;
550 else
551 vres->base.bus.caching = ttm_write_combined;
552
553 atomic64_add(vis_usage, &mgr->vis_usage)__sync_fetch_and_add_8(&mgr->vis_usage, vis_usage);
554 *res = &vres->base;
555 return 0;
556
557error_free_blocks:
558 drm_buddy_free_list(mm, &vres->blocks);
559 mutex_unlock(&mgr->lock)rw_exit_write(&mgr->lock);
560error_fini:
561 ttm_resource_fini(man, &vres->base);
562 kfree(vres);
563
564 return r;
565}
566
567/**
568 * amdgpu_vram_mgr_del - free ranges
569 *
570 * @man: TTM memory type manager
571 * @res: TTM memory object
572 *
573 * Free the allocated VRAM again.
574 */
575static void amdgpu_vram_mgr_del(struct ttm_resource_manager *man,
576 struct ttm_resource *res)
577{
578 struct amdgpu_vram_mgr_resource *vres = to_amdgpu_vram_mgr_resource(res);
579 struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
580 struct amdgpu_device *adev = to_amdgpu_device(mgr);
581 struct drm_buddy *mm = &mgr->mm;
582 struct drm_buddy_block *block;
583 uint64_t vis_usage = 0;
584
585 mutex_lock(&mgr->lock)rw_enter_write(&mgr->lock);
586 list_for_each_entry(block, &vres->blocks, link)for (block = ({ const __typeof( ((__typeof(*block) *)0)->link
) *__mptr = ((&vres->blocks)->next); (__typeof(*block
) *)( (char *)__mptr - __builtin_offsetof(__typeof(*block), link
) );}); &block->link != (&vres->blocks); block =
({ const __typeof( ((__typeof(*block) *)0)->link ) *__mptr
= (block->link.next); (__typeof(*block) *)( (char *)__mptr
- __builtin_offsetof(__typeof(*block), link) );}))
587 vis_usage += amdgpu_vram_mgr_vis_size(adev, block);
588
589 amdgpu_vram_mgr_do_reserve(man);
590
591 drm_buddy_free_list(mm, &vres->blocks);
592 mutex_unlock(&mgr->lock)rw_exit_write(&mgr->lock);
593
594 atomic64_sub(vis_usage, &mgr->vis_usage)__sync_fetch_and_sub_8(&mgr->vis_usage, vis_usage);
595
596 ttm_resource_fini(man, res);
597 kfree(vres);
598}
599
600/**
601 * amdgpu_vram_mgr_alloc_sgt - allocate and fill a sg table
602 *
603 * @adev: amdgpu device pointer
604 * @res: TTM memory object
605 * @offset: byte offset from the base of VRAM BO
606 * @length: number of bytes to export in sg_table
607 * @dev: the other device
608 * @dir: dma direction
609 * @sgt: resulting sg table
610 *
611 * Allocate and fill a sg table from a VRAM allocation.
612 */
613int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev,
614 struct ttm_resource *res,
615 u64 offset, u64 length,
616 struct device *dev,
617 enum dma_data_direction dir,
618 struct sg_table **sgt)
619{
620 STUB()do { printf("%s: stub\n", __func__); } while(0);
621 return -ENOSYS78;
622#ifdef notyet
623 struct amdgpu_res_cursor cursor;
624 struct scatterlist *sg;
625 int num_entries = 0;
626 int i, r;
627
628 *sgt = kmalloc(sizeof(**sgt), GFP_KERNEL(0x0001 | 0x0004));
629 if (!*sgt)
630 return -ENOMEM12;
631
632 /* Determine the number of DRM_BUDDY blocks to export */
633 amdgpu_res_first(res, offset, length, &cursor);
634 while (cursor.remaining) {
635 num_entries++;
636 amdgpu_res_next(&cursor, cursor.size);
637 }
638
639 r = sg_alloc_table(*sgt, num_entries, GFP_KERNEL(0x0001 | 0x0004));
640 if (r)
641 goto error_free;
642
643 /* Initialize scatterlist nodes of sg_table */
644 for_each_sgtable_sg((*sgt), sg, i)
645 sg->length = 0;
646
647 /*
648 * Walk down DRM_BUDDY blocks to populate scatterlist nodes
649 * @note: Use iterator api to get first the DRM_BUDDY block
650 * and the number of bytes from it. Access the following
651 * DRM_BUDDY block(s) if more buffer needs to exported
652 */
653 amdgpu_res_first(res, offset, length, &cursor);
654 for_each_sgtable_sg((*sgt), sg, i) {
655 phys_addr_t phys = cursor.start + adev->gmc.aper_base;
656 size_t size = cursor.size;
657 dma_addr_t addr;
658
659 addr = dma_map_resource(dev, phys, size, dir,
660 DMA_ATTR_SKIP_CPU_SYNC);
661 r = dma_mapping_error(dev, addr);
662 if (r)
663 goto error_unmap;
664
665 sg_set_page(sg, NULL((void *)0), size, 0);
666 sg_dma_address(sg)((sg)->dma_address) = addr;
667 sg_dma_len(sg)((sg)->length) = size;
668
669 amdgpu_res_next(&cursor, cursor.size);
670 }
671
672 return 0;
673
674error_unmap:
675 for_each_sgtable_sg((*sgt), sg, i) {
676 if (!sg->length)
677 continue;
678
679 dma_unmap_resource(dev, sg->dma_address,
680 sg->length, dir,
681 DMA_ATTR_SKIP_CPU_SYNC);
682 }
683 sg_free_table(*sgt);
684
685error_free:
686 kfree(*sgt);
687 return r;
688#endif
689}
690
691/**
692 * amdgpu_vram_mgr_free_sgt - allocate and fill a sg table
693 *
694 * @dev: device pointer
695 * @dir: data direction of resource to unmap
696 * @sgt: sg table to free
697 *
698 * Free a previously allocate sg table.
699 */
700void amdgpu_vram_mgr_free_sgt(struct device *dev,
701 enum dma_data_direction dir,
702 struct sg_table *sgt)
703{
704 STUB()do { printf("%s: stub\n", __func__); } while(0);
705#ifdef notyet
706 struct scatterlist *sg;
707 int i;
708
709 for_each_sgtable_sg(sgt, sg, i)
710 dma_unmap_resource(dev, sg->dma_address,
711 sg->length, dir,
712 DMA_ATTR_SKIP_CPU_SYNC);
713 sg_free_table(sgt);
714 kfree(sgt);
715#endif
716}
717
718/**
719 * amdgpu_vram_mgr_vis_usage - how many bytes are used in the visible part
720 *
721 * @mgr: amdgpu_vram_mgr pointer
722 *
723 * Returns how many bytes are used in the visible part of VRAM
724 */
725uint64_t amdgpu_vram_mgr_vis_usage(struct amdgpu_vram_mgr *mgr)
726{
727 return atomic64_read(&mgr->vis_usage)({ typeof(*(&mgr->vis_usage)) __tmp = *(volatile typeof
(*(&mgr->vis_usage)) *)&(*(&mgr->vis_usage)
); membar_datadep_consumer(); __tmp; });
728}
729
730/**
731 * amdgpu_vram_mgr_intersects - test each drm buddy block for intersection
732 *
733 * @man: TTM memory type manager
734 * @res: The resource to test
735 * @place: The place to test against
736 * @size: Size of the new allocation
737 *
738 * Test each drm buddy block for intersection for eviction decision.
739 */
740static bool_Bool amdgpu_vram_mgr_intersects(struct ttm_resource_manager *man,
741 struct ttm_resource *res,
742 const struct ttm_place *place,
743 size_t size)
744{
745 struct amdgpu_vram_mgr_resource *mgr = to_amdgpu_vram_mgr_resource(res);
746 struct drm_buddy_block *block;
747
748 /* Check each drm buddy block individually */
749 list_for_each_entry(block, &mgr->blocks, link)for (block = ({ const __typeof( ((__typeof(*block) *)0)->link
) *__mptr = ((&mgr->blocks)->next); (__typeof(*block
) *)( (char *)__mptr - __builtin_offsetof(__typeof(*block), link
) );}); &block->link != (&mgr->blocks); block =
({ const __typeof( ((__typeof(*block) *)0)->link ) *__mptr
= (block->link.next); (__typeof(*block) *)( (char *)__mptr
- __builtin_offsetof(__typeof(*block), link) );})) {
750 unsigned long fpfn =
751 amdgpu_vram_mgr_block_start(block) >> PAGE_SHIFT12;
752 unsigned long lpfn = fpfn +
753 (amdgpu_vram_mgr_block_size(block) >> PAGE_SHIFT12);
754
755 if (place->fpfn < lpfn &&
756 (!place->lpfn || place->lpfn > fpfn))
757 return true1;
758 }
759
760 return false0;
761}
762
763/**
764 * amdgpu_vram_mgr_compatible - test each drm buddy block for compatibility
765 *
766 * @man: TTM memory type manager
767 * @res: The resource to test
768 * @place: The place to test against
769 * @size: Size of the new allocation
770 *
771 * Test each drm buddy block for placement compatibility.
772 */
773static bool_Bool amdgpu_vram_mgr_compatible(struct ttm_resource_manager *man,
774 struct ttm_resource *res,
775 const struct ttm_place *place,
776 size_t size)
777{
778 struct amdgpu_vram_mgr_resource *mgr = to_amdgpu_vram_mgr_resource(res);
779 struct drm_buddy_block *block;
780
781 /* Check each drm buddy block individually */
782 list_for_each_entry(block, &mgr->blocks, link)for (block = ({ const __typeof( ((__typeof(*block) *)0)->link
) *__mptr = ((&mgr->blocks)->next); (__typeof(*block
) *)( (char *)__mptr - __builtin_offsetof(__typeof(*block), link
) );}); &block->link != (&mgr->blocks); block =
({ const __typeof( ((__typeof(*block) *)0)->link ) *__mptr
= (block->link.next); (__typeof(*block) *)( (char *)__mptr
- __builtin_offsetof(__typeof(*block), link) );})) {
783 unsigned long fpfn =
784 amdgpu_vram_mgr_block_start(block) >> PAGE_SHIFT12;
785 unsigned long lpfn = fpfn +
786 (amdgpu_vram_mgr_block_size(block) >> PAGE_SHIFT12);
787
788 if (fpfn < place->fpfn ||
789 (place->lpfn && lpfn > place->lpfn))
790 return false0;
791 }
792
793 return true1;
794}
795
796/**
797 * amdgpu_vram_mgr_debug - dump VRAM table
798 *
799 * @man: TTM memory type manager
800 * @printer: DRM printer to use
801 *
802 * Dump the table content using printk.
803 */
804static void amdgpu_vram_mgr_debug(struct ttm_resource_manager *man,
805 struct drm_printer *printer)
806{
807 struct amdgpu_vram_mgr *mgr = to_vram_mgr(man);
808 struct drm_buddy *mm = &mgr->mm;
809 struct amdgpu_vram_reservation *rsv;
810
811 drm_printf(printer, " vis usage:%llu\n",
812 amdgpu_vram_mgr_vis_usage(mgr));
813
814 mutex_lock(&mgr->lock)rw_enter_write(&mgr->lock);
815 drm_printf(printer, "default_page_size: %lluKiB\n",
816 mgr->default_page_size >> 10);
817
818 drm_buddy_print(mm, printer);
819
820 drm_printf(printer, "reserved:\n");
821 list_for_each_entry(rsv, &mgr->reserved_pages, blocks)for (rsv = ({ const __typeof( ((__typeof(*rsv) *)0)->blocks
) *__mptr = ((&mgr->reserved_pages)->next); (__typeof
(*rsv) *)( (char *)__mptr - __builtin_offsetof(__typeof(*rsv)
, blocks) );}); &rsv->blocks != (&mgr->reserved_pages
); rsv = ({ const __typeof( ((__typeof(*rsv) *)0)->blocks )
*__mptr = (rsv->blocks.next); (__typeof(*rsv) *)( (char *
)__mptr - __builtin_offsetof(__typeof(*rsv), blocks) );}))
822 drm_printf(printer, "%#018llx-%#018llx: %llu\n",
823 rsv->start, rsv->start + rsv->size, rsv->size);
824 mutex_unlock(&mgr->lock)rw_exit_write(&mgr->lock);
825}
826
827static const struct ttm_resource_manager_func amdgpu_vram_mgr_func = {
828 .alloc = amdgpu_vram_mgr_new,
829 .free = amdgpu_vram_mgr_del,
830 .intersects = amdgpu_vram_mgr_intersects,
831 .compatible = amdgpu_vram_mgr_compatible,
832 .debug = amdgpu_vram_mgr_debug
833};
834
835/**
836 * amdgpu_vram_mgr_init - init VRAM manager and DRM MM
837 *
838 * @adev: amdgpu_device pointer
839 *
840 * Allocate and initialize the VRAM manager.
841 */
842int amdgpu_vram_mgr_init(struct amdgpu_device *adev)
843{
844 struct amdgpu_vram_mgr *mgr = &adev->mman.vram_mgr;
845 struct ttm_resource_manager *man = &mgr->manager;
846 int err;
847
848 ttm_resource_manager_init(man, &adev->mman.bdev,
849 adev->gmc.real_vram_size);
850
851 man->func = &amdgpu_vram_mgr_func;
852
853 err = drm_buddy_init(&mgr->mm, man->size, PAGE_SIZE(1 << 12));
854 if (err)
855 return err;
856
857 rw_init(&mgr->lock, "vrmgr")_rw_init_flags(&mgr->lock, "vrmgr", 0, ((void *)0));
858 INIT_LIST_HEAD(&mgr->reservations_pending);
859 INIT_LIST_HEAD(&mgr->reserved_pages);
860 mgr->default_page_size = PAGE_SIZE(1 << 12);
861
862 ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_VRAM2, &mgr->manager);
863 ttm_resource_manager_set_used(man, true1);
864 return 0;
865}
866
867/**
868 * amdgpu_vram_mgr_fini - free and destroy VRAM manager
869 *
870 * @adev: amdgpu_device pointer
871 *
872 * Destroy and free the VRAM manager, returns -EBUSY if ranges are still
873 * allocated inside it.
874 */
875void amdgpu_vram_mgr_fini(struct amdgpu_device *adev)
876{
877 struct amdgpu_vram_mgr *mgr = &adev->mman.vram_mgr;
878 struct ttm_resource_manager *man = &mgr->manager;
879 int ret;
880 struct amdgpu_vram_reservation *rsv, *temp;
881
882 ttm_resource_manager_set_used(man, false0);
883
884 ret = ttm_resource_manager_evict_all(&adev->mman.bdev, man);
885 if (ret)
886 return;
887
888 mutex_lock(&mgr->lock)rw_enter_write(&mgr->lock);
889 list_for_each_entry_safe(rsv, temp, &mgr->reservations_pending, blocks)for (rsv = ({ const __typeof( ((__typeof(*rsv) *)0)->blocks
) *__mptr = ((&mgr->reservations_pending)->next); (
__typeof(*rsv) *)( (char *)__mptr - __builtin_offsetof(__typeof
(*rsv), blocks) );}), temp = ({ const __typeof( ((__typeof(*rsv
) *)0)->blocks ) *__mptr = (rsv->blocks.next); (__typeof
(*rsv) *)( (char *)__mptr - __builtin_offsetof(__typeof(*rsv)
, blocks) );}); &rsv->blocks != (&mgr->reservations_pending
); rsv = temp, temp = ({ const __typeof( ((__typeof(*temp) *)
0)->blocks ) *__mptr = (temp->blocks.next); (__typeof(*
temp) *)( (char *)__mptr - __builtin_offsetof(__typeof(*temp)
, blocks) );}))
890 kfree(rsv);
891
892 list_for_each_entry_safe(rsv, temp, &mgr->reserved_pages, blocks)for (rsv = ({ const __typeof( ((__typeof(*rsv) *)0)->blocks
) *__mptr = ((&mgr->reserved_pages)->next); (__typeof
(*rsv) *)( (char *)__mptr - __builtin_offsetof(__typeof(*rsv)
, blocks) );}), temp = ({ const __typeof( ((__typeof(*rsv) *)
0)->blocks ) *__mptr = (rsv->blocks.next); (__typeof(*rsv
) *)( (char *)__mptr - __builtin_offsetof(__typeof(*rsv), blocks
) );}); &rsv->blocks != (&mgr->reserved_pages);
rsv = temp, temp = ({ const __typeof( ((__typeof(*temp) *)0)
->blocks ) *__mptr = (temp->blocks.next); (__typeof(*temp
) *)( (char *)__mptr - __builtin_offsetof(__typeof(*temp), blocks
) );})) {
893 drm_buddy_free_list(&mgr->mm, &rsv->allocated);
894 kfree(rsv);
895 }
896 drm_buddy_fini(&mgr->mm);
897 mutex_unlock(&mgr->lock)rw_exit_write(&mgr->lock);
898
899 ttm_resource_manager_cleanup(man);
900 ttm_set_driver_manager(&adev->mman.bdev, TTM_PL_VRAM2, NULL((void *)0));
901}