Re: [PATCH v6 35/36] videobuf2: use sgtable-based scatterlist wrappers

From: kernel test robot
Date: Thu Jun 18 2020 - 20:51:05 EST

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In reply to: Marek Szyprowski: "[PATCH v6 35/36] videobuf2: use sgtable-based scatterlist wrappers"
Next in thread: Robin Murphy: "Re: [PATCH v6 35/36] videobuf2: use sgtable-based scatterlist wrappers"
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Hi Marek,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20200618]
[also build test ERROR on v5.8-rc1]
[cannot apply to linuxtv-media/master staging/staging-testing drm-exynos/exynos-drm-next drm-intel/for-linux-next linus/master v5.8-rc1 v5.7 v5.7-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Marek-Szyprowski/DRM-fix-struct-sg_table-nents-vs-orig_nents-misuse/20200619-000417
base: ce2cc8efd7a40cbd17841add878cb691d0ce0bba
config: alpha-allyesconfig (attached as .config)
compiler: alpha-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All error/warnings (new ones prefixed by >>):

drivers/media/common/videobuf2/videobuf2-dma-sg.c: In function 'vb2_dma_sg_alloc':
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:173:13: error: invalid storage class for function 'vb2_dma_sg_put'
173 | static void vb2_dma_sg_put(void *buf_priv)
| ^~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:173:1: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
173 | static void vb2_dma_sg_put(void *buf_priv)
| ^~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:195:13: error: invalid storage class for function 'vb2_dma_sg_prepare'
195 | static void vb2_dma_sg_prepare(void *buf_priv)
| ^~~~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:207:13: error: invalid storage class for function 'vb2_dma_sg_finish'
207 | static void vb2_dma_sg_finish(void *buf_priv)
| ^~~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:219:14: error: invalid storage class for function 'vb2_dma_sg_get_userptr'
219 | static void *vb2_dma_sg_get_userptr(struct device *dev, unsigned long vaddr,
| ^~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c: In function 'vb2_dma_sg_get_userptr':
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:278:13: error: invalid storage class for function 'vb2_dma_sg_put_userptr'
278 | static void vb2_dma_sg_put_userptr(void *buf_priv)
| ^~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:278:1: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
278 | static void vb2_dma_sg_put_userptr(void *buf_priv)
| ^~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:298:14: error: invalid storage class for function 'vb2_dma_sg_vaddr'
298 | static void *vb2_dma_sg_vaddr(void *buf_priv)
| ^~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:315:21: error: invalid storage class for function 'vb2_dma_sg_num_users'
315 | static unsigned int vb2_dma_sg_num_users(void *buf_priv)
| ^~~~~~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:322:12: error: invalid storage class for function 'vb2_dma_sg_mmap'
322 | static int vb2_dma_sg_mmap(void *buf_priv, struct vm_area_struct *vma)
| ^~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:358:12: error: invalid storage class for function 'vb2_dma_sg_dmabuf_ops_attach'
358 | static int vb2_dma_sg_dmabuf_ops_attach(struct dma_buf *dbuf,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:396:13: error: invalid storage class for function 'vb2_dma_sg_dmabuf_ops_detach'
396 | static void vb2_dma_sg_dmabuf_ops_detach(struct dma_buf *dbuf,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c: In function 'vb2_dma_sg_dmabuf_ops_detach':
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:409:3: error: too few arguments to function 'dma_unmap_sgtable'
409 | dma_unmap_sgtable(db_attach->dev, sgt, attach->dma_dir);
| ^~~~~~~~~~~~~~~~~
In file included from include/linux/dma-buf.h:20,
from include/media/videobuf2-core.h:18,
from include/media/videobuf2-v4l2.h:16,
from drivers/media/common/videobuf2/videobuf2-dma-sg.c:21:
include/linux/dma-mapping.h:651:20: note: declared here
651 | static inline void dma_unmap_sgtable(struct device *dev, struct sg_table *sgt,
| ^~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c: In function 'vb2_dma_sg_get_userptr':
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:415:25: error: invalid storage class for function 'vb2_dma_sg_dmabuf_ops_map'
415 | static struct sg_table *vb2_dma_sg_dmabuf_ops_map(
| ^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c: In function 'vb2_dma_sg_dmabuf_ops_map':
drivers/media/common/videobuf2/videobuf2-dma-sg.c:434:3: error: too few arguments to function 'dma_unmap_sgtable'
434 | dma_unmap_sgtable(db_attach->dev, sgt, attach->dma_dir);
| ^~~~~~~~~~~~~~~~~
In file included from include/linux/dma-buf.h:20,
from include/media/videobuf2-core.h:18,
from include/media/videobuf2-v4l2.h:16,
from drivers/media/common/videobuf2/videobuf2-dma-sg.c:21:
include/linux/dma-mapping.h:651:20: note: declared here
651 | static inline void dma_unmap_sgtable(struct device *dev, struct sg_table *sgt,
| ^~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c: In function 'vb2_dma_sg_get_userptr':
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:452:13: error: invalid storage class for function 'vb2_dma_sg_dmabuf_ops_unmap'
452 | static void vb2_dma_sg_dmabuf_ops_unmap(struct dma_buf_attachment *db_attach,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:458:13: error: invalid storage class for function 'vb2_dma_sg_dmabuf_ops_release'
458 | static void vb2_dma_sg_dmabuf_ops_release(struct dma_buf *dbuf)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:464:14: error: invalid storage class for function 'vb2_dma_sg_dmabuf_ops_vmap'
464 | static void *vb2_dma_sg_dmabuf_ops_vmap(struct dma_buf *dbuf)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:471:12: error: invalid storage class for function 'vb2_dma_sg_dmabuf_ops_mmap'
471 | static int vb2_dma_sg_dmabuf_ops_mmap(struct dma_buf *dbuf,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:478:12: error: initializer element is not constant
478 | .attach = vb2_dma_sg_dmabuf_ops_attach,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:478:12: note: (near initialization for 'vb2_dma_sg_dmabuf_ops.attach')
drivers/media/common/videobuf2/videobuf2-dma-sg.c:479:12: error: initializer element is not constant
479 | .detach = vb2_dma_sg_dmabuf_ops_detach,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:479:12: note: (near initialization for 'vb2_dma_sg_dmabuf_ops.detach')
drivers/media/common/videobuf2/videobuf2-dma-sg.c:480:17: error: initializer element is not constant
480 | .map_dma_buf = vb2_dma_sg_dmabuf_ops_map,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:480:17: note: (near initialization for 'vb2_dma_sg_dmabuf_ops.map_dma_buf')
drivers/media/common/videobuf2/videobuf2-dma-sg.c:481:19: error: initializer element is not constant
481 | .unmap_dma_buf = vb2_dma_sg_dmabuf_ops_unmap,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:481:19: note: (near initialization for 'vb2_dma_sg_dmabuf_ops.unmap_dma_buf')
drivers/media/common/videobuf2/videobuf2-dma-sg.c:482:10: error: initializer element is not constant
482 | .vmap = vb2_dma_sg_dmabuf_ops_vmap,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:482:10: note: (near initialization for 'vb2_dma_sg_dmabuf_ops.vmap')
drivers/media/common/videobuf2/videobuf2-dma-sg.c:483:10: error: initializer element is not constant
483 | .mmap = vb2_dma_sg_dmabuf_ops_mmap,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:483:10: note: (near initialization for 'vb2_dma_sg_dmabuf_ops.mmap')
drivers/media/common/videobuf2/videobuf2-dma-sg.c:484:13: error: initializer element is not constant
484 | .release = vb2_dma_sg_dmabuf_ops_release,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:484:13: note: (near initialization for 'vb2_dma_sg_dmabuf_ops.release')
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:487:24: error: invalid storage class for function 'vb2_dma_sg_get_dmabuf'
487 | static struct dma_buf *vb2_dma_sg_get_dmabuf(void *buf_priv, unsigned long flags)
| ^~~~~~~~~~~~~~~~~~~~~
>> drivers/media/common/videobuf2/videobuf2-dma-sg.c:515:12: error: invalid storage class for function 'vb2_dma_sg_map_dmabuf'
515 | static int vb2_dma_sg_map_dmabuf(void *mem_priv)
| ^~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:543:13: error: invalid storage class for function 'vb2_dma_sg_unmap_dmabuf'
543 | static void vb2_dma_sg_unmap_dmabuf(void *mem_priv)
| ^~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:567:13: error: invalid storage class for function 'vb2_dma_sg_detach_dmabuf'
567 | static void vb2_dma_sg_detach_dmabuf(void *mem_priv)
| ^~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:580:14: error: invalid storage class for function 'vb2_dma_sg_attach_dmabuf'
580 | static void *vb2_dma_sg_attach_dmabuf(struct device *dev, struct dma_buf *dbuf,
| ^~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:612:14: error: invalid storage class for function 'vb2_dma_sg_cookie'
612 | static void *vb2_dma_sg_cookie(void *buf_priv)
| ^~~~~~~~~~~~~~~~~
In file included from include/linux/linkage.h:7,
from include/linux/kernel.h:8,
from include/linux/list.h:9,
from include/linux/module.h:12,
from drivers/media/common/videobuf2/videobuf2-dma-sg.c:13:
drivers/media/common/videobuf2/videobuf2-dma-sg.c:636:19: error: extern declaration of 'vb2_dma_sg_memops' follows declaration with no linkage
636 | EXPORT_SYMBOL_GPL(vb2_dma_sg_memops);
| ^~~~~~~~~~~~~~~~~
include/linux/export.h:98:21: note: in definition of macro '___EXPORT_SYMBOL'
98 | extern typeof(sym) sym; \
| ^~~
include/linux/export.h:155:34: note: in expansion of macro '__EXPORT_SYMBOL'
155 | #define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, "")
| ^~~~~~~~~~~~~~~
include/linux/export.h:159:33: note: in expansion of macro '_EXPORT_SYMBOL'
159 | #define EXPORT_SYMBOL_GPL(sym) _EXPORT_SYMBOL(sym, "_gpl")
| ^~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:636:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL'
636 | EXPORT_SYMBOL_GPL(vb2_dma_sg_memops);
| ^~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:619:26: note: previous definition of 'vb2_dma_sg_memops' was here
619 | const struct vb2_mem_ops vb2_dma_sg_memops = {
| ^~~~~~~~~~~~~~~~~
In file included from include/linux/linkage.h:7,
from include/linux/kernel.h:8,
from include/linux/list.h:9,
from include/linux/module.h:12,
from drivers/media/common/videobuf2/videobuf2-dma-sg.c:13:
include/linux/export.h:67:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
67 | static const struct kernel_symbol __ksymtab_##sym \
| ^~~~~~
include/linux/export.h:108:2: note: in expansion of macro '__KSYMTAB_ENTRY'
108 | __KSYMTAB_ENTRY(sym, sec)
| ^~~~~~~~~~~~~~~
include/linux/export.h:147:39: note: in expansion of macro '___EXPORT_SYMBOL'
147 | #define __EXPORT_SYMBOL(sym, sec, ns) ___EXPORT_SYMBOL(sym, sec, ns)
| ^~~~~~~~~~~~~~~~
include/linux/export.h:155:34: note: in expansion of macro '__EXPORT_SYMBOL'
155 | #define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, "")
| ^~~~~~~~~~~~~~~
include/linux/export.h:159:33: note: in expansion of macro '_EXPORT_SYMBOL'
159 | #define EXPORT_SYMBOL_GPL(sym) _EXPORT_SYMBOL(sym, "_gpl")
| ^~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:636:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL'
636 | EXPORT_SYMBOL_GPL(vb2_dma_sg_memops);
| ^~~~~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:640:1: error: expected declaration or statement at end of input
640 | MODULE_LICENSE("GPL");
| ^~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c: In function 'vb2_dma_sg_alloc':
drivers/media/common/videobuf2/videobuf2-dma-sg.c:640:1: error: expected declaration or statement at end of input
drivers/media/common/videobuf2/videobuf2-dma-sg.c: At top level:
drivers/media/common/videobuf2/videobuf2-dma-sg.c:56:13: warning: 'vb2_dma_sg_put' used but never defined
56 | static void vb2_dma_sg_put(void *buf_priv);
| ^~~~~~~~~~~~~~
drivers/media/common/videobuf2/videobuf2-dma-sg.c:219:14: warning: 'vb2_dma_sg_get_userptr' defined but not used [-Wunused-function]
219 | static void *vb2_dma_sg_get_userptr(struct device *dev, unsigned long vaddr,
| ^~~~~~~~~~~~~~~~~~~~~~

vim +/vb2_dma_sg_put +173 drivers/media/common/videobuf2/videobuf2-dma-sg.c

5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 55
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 @56 static void vb2_dma_sg_put(void *buf_priv);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 57
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 58 static int vb2_dma_sg_alloc_compacted(struct vb2_dma_sg_buf *buf,
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 59 gfp_t gfp_flags)
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 60 {
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 61 unsigned int last_page = 0;
14f28f5cea9e399 drivers/media/common/videobuf2/videobuf2-dma-sg.c Sakari Ailus 2018-12-12 62 unsigned long size = buf->size;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 63
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 64 while (size > 0) {
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 65 struct page *pages;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 66 int order;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 67 int i;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 68
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 69 order = get_order(size);
4b129dc907e9b95 drivers/media/common/videobuf2/videobuf2-dma-sg.c Mauro Carvalho Chehab 2019-02-18 70 /* Don't over allocate*/
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 71 if ((PAGE_SIZE << order) > size)
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 72 order--;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 73
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 74 pages = NULL;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 75 while (!pages) {
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 76 pages = alloc_pages(GFP_KERNEL | __GFP_ZERO |
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 77 __GFP_NOWARN | gfp_flags, order);
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 78 if (pages)
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 79 break;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 80
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 81 if (order == 0) {
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 82 while (last_page--)
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 83 __free_page(buf->pages[last_page]);
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 84 return -ENOMEM;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 85 }
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 86 order--;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 87 }
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 88
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 89 split_page(pages, order);
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 90 for (i = 0; i < (1 << order); i++)
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 91 buf->pages[last_page++] = &pages[i];
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 92
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 93 size -= PAGE_SIZE << order;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 94 }
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 95
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 96 return 0;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 97 }
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 98
00085f1efa387a8 drivers/media/v4l2-core/videobuf2-dma-sg.c Krzysztof Kozlowski 2016-08-03 99 static void *vb2_dma_sg_alloc(struct device *dev, unsigned long dma_attrs,
d16e832da23edff drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-04-15 100 unsigned long size, enum dma_data_direction dma_dir,
d16e832da23edff drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-04-15 101 gfp_t gfp_flags)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 102 {
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 103 struct vb2_dma_sg_buf *buf;
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 104 struct sg_table *sgt;
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 105 int ret;
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 106 int num_pages;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 107
0ff657b0f6120cb drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 108 if (WARN_ON(!dev))
0ff657b0f6120cb drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 109 return ERR_PTR(-EINVAL);
0ff657b0f6120cb drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 110
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 111 buf = kzalloc(sizeof *buf, GFP_KERNEL);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 112 if (!buf)
0ff657b0f6120cb drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 113 return ERR_PTR(-ENOMEM);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 114
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 115 buf->vaddr = NULL;
d935c57e8fb6902 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 116 buf->dma_dir = dma_dir;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 117 buf->offset = 0;
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 118 buf->size = size;
7f8414594e47552 drivers/media/v4l2-core/videobuf2-dma-sg.c Mauro Carvalho Chehab 2013-04-19 119 /* size is already page aligned */
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 120 buf->num_pages = size >> PAGE_SHIFT;
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 121 buf->dma_sgt = &buf->sg_table;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 122
758d90e161382c1 drivers/media/v4l2-core/videobuf2-dma-sg.c Tomasz Figa 2017-06-19 123 buf->pages = kvmalloc_array(buf->num_pages, sizeof(struct page *),
758d90e161382c1 drivers/media/v4l2-core/videobuf2-dma-sg.c Tomasz Figa 2017-06-19 124 GFP_KERNEL | __GFP_ZERO);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 125 if (!buf->pages)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 126 goto fail_pages_array_alloc;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 127
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 128 ret = vb2_dma_sg_alloc_compacted(buf, gfp_flags);
df23728118cd0f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 129 if (ret)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 130 goto fail_pages_alloc;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 131
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 132 ret = sg_alloc_table_from_pages(buf->dma_sgt, buf->pages,
47bc59c52b005f5 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-08-01 133 buf->num_pages, 0, size, GFP_KERNEL);
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 134 if (ret)
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 135 goto fail_table_alloc;
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 136
0c3a14c177aa85a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 137 /* Prevent the device from being released while the buffer is used */
36c0f8b32c4bd4f drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-04-15 138 buf->dev = get_device(dev);
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 139
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 140 sgt = &buf->sg_table;
251a79f8f5adfd8 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 141 /*
251a79f8f5adfd8 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 142 * No need to sync to the device, this will happen later when the
251a79f8f5adfd8 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 143 * prepare() memop is called.
251a79f8f5adfd8 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 144 */
b8bd9d592f68e3c drivers/media/common/videobuf2/videobuf2-dma-sg.c Marek Szyprowski 2020-06-18 145 if (dma_map_sgtable(buf->dev, sgt, buf->dma_dir,
b8bd9d592f68e3c drivers/media/common/videobuf2/videobuf2-dma-sg.c Marek Szyprowski 2020-06-18 146 DMA_ATTR_SKIP_CPU_SYNC)) {
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 147 goto fail_map;
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 148
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 149 buf->handler.refcount = &buf->refcount;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 150 buf->handler.put = vb2_dma_sg_put;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 151 buf->handler.arg = buf;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 152
6c4bb65d0be8f34 drivers/media/v4l2-core/videobuf2-dma-sg.c Elena Reshetova 2017-03-06 153 refcount_set(&buf->refcount, 1);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 154
ffdc78efe1a8a01 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2013-03-02 155 dprintk(1, "%s: Allocated buffer of %d pages\n",
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 156 __func__, buf->num_pages);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 157 return buf;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 158
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 159 fail_map:
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 160 put_device(buf->dev);
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 161 sg_free_table(buf->dma_sgt);
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 162 fail_table_alloc:
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 163 num_pages = buf->num_pages;
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 164 while (num_pages--)
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 165 __free_page(buf->pages[num_pages]);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 166 fail_pages_alloc:
758d90e161382c1 drivers/media/v4l2-core/videobuf2-dma-sg.c Tomasz Figa 2017-06-19 167 kvfree(buf->pages);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 168 fail_pages_array_alloc:
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 169 kfree(buf);
0ff657b0f6120cb drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 170 return ERR_PTR(-ENOMEM);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 171 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 172
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 @173 static void vb2_dma_sg_put(void *buf_priv)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 174 {
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 175 struct vb2_dma_sg_buf *buf = buf_priv;
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 176 struct sg_table *sgt = &buf->sg_table;
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 177 int i = buf->num_pages;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 178
6c4bb65d0be8f34 drivers/media/v4l2-core/videobuf2-dma-sg.c Elena Reshetova 2017-03-06 179 if (refcount_dec_and_test(&buf->refcount)) {
ffdc78efe1a8a01 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2013-03-02 180 dprintk(1, "%s: Freeing buffer of %d pages\n", __func__,
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 181 buf->num_pages);
b8bd9d592f68e3c drivers/media/common/videobuf2/videobuf2-dma-sg.c Marek Szyprowski 2020-06-18 182 dma_unmap_sgtable(buf->dev, sgt, buf->dma_dir,
b8bd9d592f68e3c drivers/media/common/videobuf2/videobuf2-dma-sg.c Marek Szyprowski 2020-06-18 183 DMA_ATTR_SKIP_CPU_SYNC);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 184 if (buf->vaddr)
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 185 vm_unmap_ram(buf->vaddr, buf->num_pages);
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 186 sg_free_table(buf->dma_sgt);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 187 while (--i >= 0)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 188 __free_page(buf->pages[i]);
758d90e161382c1 drivers/media/v4l2-core/videobuf2-dma-sg.c Tomasz Figa 2017-06-19 189 kvfree(buf->pages);
0c3a14c177aa85a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 190 put_device(buf->dev);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 191 kfree(buf);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 192 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 193 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 194
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 @195 static void vb2_dma_sg_prepare(void *buf_priv)
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 196 {
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 197 struct vb2_dma_sg_buf *buf = buf_priv;
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 198 struct sg_table *sgt = buf->dma_sgt;
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 199
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 200 /* DMABUF exporter will flush the cache for us */
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 201 if (buf->db_attach)
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 202 return;
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 203
b8bd9d592f68e3c drivers/media/common/videobuf2/videobuf2-dma-sg.c Marek Szyprowski 2020-06-18 204 dma_sync_sgtable_for_device(buf->dev, sgt, buf->dma_dir);
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 205 }
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 206
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 @207 static void vb2_dma_sg_finish(void *buf_priv)
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 208 {
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 209 struct vb2_dma_sg_buf *buf = buf_priv;
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 210 struct sg_table *sgt = buf->dma_sgt;
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 211
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 212 /* DMABUF exporter will flush the cache for us */
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 213 if (buf->db_attach)
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 214 return;
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 215
b8bd9d592f68e3c drivers/media/common/videobuf2/videobuf2-dma-sg.c Marek Szyprowski 2020-06-18 216 dma_sync_sgtable_for_cpu(buf->dev, sgt, buf->dma_dir);
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 217 }
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 218
36c0f8b32c4bd4f drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-04-15 @219 static void *vb2_dma_sg_get_userptr(struct device *dev, unsigned long vaddr,
cd474037c4a9a9c drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 220 unsigned long size,
cd474037c4a9a9c drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 221 enum dma_data_direction dma_dir)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 222 {
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 223 struct vb2_dma_sg_buf *buf;
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 224 struct sg_table *sgt;
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 225 struct frame_vector *vec;
251a79f8f5adfd8 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 226
10791829eb52d57 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 227 if (WARN_ON(!dev))
10791829eb52d57 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 228 return ERR_PTR(-EINVAL);
10791829eb52d57 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 229
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 230 buf = kzalloc(sizeof *buf, GFP_KERNEL);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 231 if (!buf)
0ff657b0f6120cb drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 232 return ERR_PTR(-ENOMEM);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 233
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 234 buf->vaddr = NULL;
36c0f8b32c4bd4f drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-04-15 235 buf->dev = dev;
cd474037c4a9a9c drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 236 buf->dma_dir = dma_dir;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 237 buf->offset = vaddr & ~PAGE_MASK;
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 238 buf->size = size;
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 239 buf->dma_sgt = &buf->sg_table;
707947247e9517b drivers/media/common/videobuf2/videobuf2-dma-sg.c Hans Verkuil 2019-04-04 240 vec = vb2_create_framevec(vaddr, size);
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 241 if (IS_ERR(vec))
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 242 goto userptr_fail_pfnvec;
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 243 buf->vec = vec;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 244
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 245 buf->pages = frame_vector_pages(vec);
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 246 if (IS_ERR(buf->pages))
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 247 goto userptr_fail_sgtable;
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 248 buf->num_pages = frame_vector_count(vec);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 249
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 250 if (sg_alloc_table_from_pages(buf->dma_sgt, buf->pages,
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 251 buf->num_pages, buf->offset, size, 0))
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 252 goto userptr_fail_sgtable;
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 253
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 254 sgt = &buf->sg_table;
251a79f8f5adfd8 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 255 /*
251a79f8f5adfd8 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 256 * No need to sync to the device, this will happen later when the
251a79f8f5adfd8 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 257 * prepare() memop is called.
251a79f8f5adfd8 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 258 */
b8bd9d592f68e3c drivers/media/common/videobuf2/videobuf2-dma-sg.c Marek Szyprowski 2020-06-18 259 if (dma_map_sgtable(buf->dev, sgt, buf->dma_dir,
b8bd9d592f68e3c drivers/media/common/videobuf2/videobuf2-dma-sg.c Marek Szyprowski 2020-06-18 260 DMA_ATTR_SKIP_CPU_SYNC)) {
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 261 goto userptr_fail_map;
6a5d77cbf26078e drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2015-04-29 262
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 263 return buf;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 264
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 265 userptr_fail_map:
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 266 sg_free_table(&buf->sg_table);
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 267 userptr_fail_sgtable:
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 268 vb2_destroy_framevec(vec);
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 269 userptr_fail_pfnvec:
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 270 kfree(buf);
0ff657b0f6120cb drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2016-07-21 271 return ERR_PTR(-ENOMEM);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 272 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 273
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 274 /*
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 275 * @put_userptr: inform the allocator that a USERPTR buffer will no longer
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 276 * be used
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 277 */
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 @278 static void vb2_dma_sg_put_userptr(void *buf_priv)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 279 {
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 280 struct vb2_dma_sg_buf *buf = buf_priv;
d790b7eda953df4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-24 281 struct sg_table *sgt = &buf->sg_table;
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 282 int i = buf->num_pages;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 283
ffdc78efe1a8a01 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2013-03-02 284 dprintk(1, "%s: Releasing userspace buffer of %d pages\n",
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 285 __func__, buf->num_pages);
b8bd9d592f68e3c drivers/media/common/videobuf2/videobuf2-dma-sg.c Marek Szyprowski 2020-06-18 286 dma_unmap_sgtable(buf->dev, sgt, buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 287 if (buf->vaddr)
223012475968fb8 drivers/media/v4l2-core/videobuf2-dma-sg.c Ricardo Ribalda 2013-08-02 288 vm_unmap_ram(buf->vaddr, buf->num_pages);
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 289 sg_free_table(buf->dma_sgt);
5b6f9abe5a49df8 drivers/media/v4l2-core/videobuf2-dma-sg.c Stanimir Varbanov 2017-08-21 290 if (buf->dma_dir == DMA_FROM_DEVICE ||
5b6f9abe5a49df8 drivers/media/v4l2-core/videobuf2-dma-sg.c Stanimir Varbanov 2017-08-21 291 buf->dma_dir == DMA_BIDIRECTIONAL)
c0cb76589c77b9a drivers/media/v4l2-core/videobuf2-dma-sg.c Stanimir Varbanov 2017-08-29 292 while (--i >= 0)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 293 set_page_dirty_lock(buf->pages[i]);
3336c24f25ec932 drivers/media/v4l2-core/videobuf2-dma-sg.c Jan Kara 2015-07-13 294 vb2_destroy_framevec(buf->vec);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 295 kfree(buf);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 296 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 297
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 @298 static void *vb2_dma_sg_vaddr(void *buf_priv)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 299 {
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 300 struct vb2_dma_sg_buf *buf = buf_priv;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 301
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 302 BUG_ON(!buf);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 303
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 304 if (!buf->vaddr) {
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 305 if (buf->db_attach)
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 306 buf->vaddr = dma_buf_vmap(buf->db_attach->dmabuf);
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 307 else
d4efd79a81abc70 drivers/media/common/videobuf2/videobuf2-dma-sg.c Christoph Hellwig 2020-06-01 308 buf->vaddr = vm_map_ram(buf->pages, buf->num_pages, -1);
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 309 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 310
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 311 /* add offset in case userptr is not page-aligned */
e078b79d8aa70a4 drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 312 return buf->vaddr ? buf->vaddr + buf->offset : NULL;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 313 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 314
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 @315 static unsigned int vb2_dma_sg_num_users(void *buf_priv)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 316 {
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 317 struct vb2_dma_sg_buf *buf = buf_priv;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 318
6c4bb65d0be8f34 drivers/media/v4l2-core/videobuf2-dma-sg.c Elena Reshetova 2017-03-06 319 return refcount_read(&buf->refcount);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 320 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 321
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 @322 static int vb2_dma_sg_mmap(void *buf_priv, struct vm_area_struct *vma)
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 323 {
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 324 struct vb2_dma_sg_buf *buf = buf_priv;
a17ae14766935aa drivers/media/common/videobuf2/videobuf2-dma-sg.c Souptick Joarder 2019-05-13 325 int err;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 326
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 327 if (!buf) {
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 328 printk(KERN_ERR "No memory to map\n");
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 329 return -EINVAL;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 330 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 331
a17ae14766935aa drivers/media/common/videobuf2/videobuf2-dma-sg.c Souptick Joarder 2019-05-13 332 err = vm_map_pages(vma, buf->pages, buf->num_pages);
a17ae14766935aa drivers/media/common/videobuf2/videobuf2-dma-sg.c Souptick Joarder 2019-05-13 333 if (err) {
a17ae14766935aa drivers/media/common/videobuf2/videobuf2-dma-sg.c Souptick Joarder 2019-05-13 334 printk(KERN_ERR "Remapping memory, error: %d\n", err);
a17ae14766935aa drivers/media/common/videobuf2/videobuf2-dma-sg.c Souptick Joarder 2019-05-13 335 return err;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 336 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 337
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 338 /*
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 339 * Use common vm_area operations to track buffer refcount.
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 340 */
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 341 vma->vm_private_data = &buf->handler;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 342 vma->vm_ops = &vb2_common_vm_ops;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 343
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 344 vma->vm_ops->open(vma);
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 345
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 346 return 0;
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 347 }
5ba3f757f0592ca drivers/media/video/videobuf2-dma-sg.c Andrzej Pietrasiewicz 2010-11-29 348
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 349 /*********************************************/
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 350 /* DMABUF ops for exporters */
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 351 /*********************************************/
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 352
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 353 struct vb2_dma_sg_attachment {
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 354 struct sg_table sgt;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 355 enum dma_data_direction dma_dir;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 356 };
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 357
a19741e5e5a9f1f drivers/media/common/videobuf2/videobuf2-dma-sg.c Christian König 2018-05-28 @358 static int vb2_dma_sg_dmabuf_ops_attach(struct dma_buf *dbuf,
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 359 struct dma_buf_attachment *dbuf_attach)
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 360 {
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 361 struct vb2_dma_sg_attachment *attach;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 362 unsigned int i;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 363 struct scatterlist *rd, *wr;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 364 struct sg_table *sgt;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 365 struct vb2_dma_sg_buf *buf = dbuf->priv;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 366 int ret;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 367
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 368 attach = kzalloc(sizeof(*attach), GFP_KERNEL);
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 369 if (!attach)
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 370 return -ENOMEM;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 371
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 372 sgt = &attach->sgt;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 373 /* Copy the buf->base_sgt scatter list to the attachment, as we can't
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 374 * map the same scatter list to multiple attachments at the same time.
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 375 */
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 376 ret = sg_alloc_table(sgt, buf->dma_sgt->orig_nents, GFP_KERNEL);
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 377 if (ret) {
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 378 kfree(attach);
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 379 return -ENOMEM;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 380 }
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 381
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 382 rd = buf->dma_sgt->sgl;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 383 wr = sgt->sgl;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 384 for (i = 0; i < sgt->orig_nents; ++i) {
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 385 sg_set_page(wr, sg_page(rd), rd->length, rd->offset);
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 386 rd = sg_next(rd);
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 387 wr = sg_next(wr);
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 388 }
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 389
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 390 attach->dma_dir = DMA_NONE;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 391 dbuf_attach->priv = attach;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 392
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 393 return 0;
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 394 }
041c7b6ac74ee7a drivers/media/v4l2-core/videobuf2-dma-sg.c Hans Verkuil 2014-11-18 395

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