Re: [PATCH] sparse: use static inline for __chk_{user,io}_ptr()

From: kernel test robot
Date: Mon Jun 29 2020 - 15:31:43 EST

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In reply to: kernel test robot: "Re: [PATCH] sparse: use static inline for __chk_{user,io}_ptr()"
Next in thread: Luc Van Oostenryck: "Re: [PATCH] sparse: use static inline for __chk_{user,io}_ptr()"
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Hi Luc,

I love your patch! Perhaps something to improve:

[auto build test WARNING on next-20200626]
[cannot apply to linux/master linus/master v5.8-rc2 v5.8-rc1 v5.7 v5.8-rc3]
[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/Luc-Van-Oostenryck/sparse-use-static-inline-for-__chk_-user-io-_ptr/20200628-152401
base: 36e3135df4d426612fc77db26a312c2531108603
config: i386-randconfig-s002-20200629 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.2-3-gfa153962-dirty
# save the attached .config to linux build tree
make W=1 C= CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386

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

sparse warnings: (new ones prefixed by >>)

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:818:42: sparse: sparse: cast removes address space '__iomem' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast removes address space '__user' of expression
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:2388:21: sparse: sparse: cast removes address space '__user' of expression
--
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:384:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c:399:21: sparse: sparse: cast removes address space '__user' of expression
--
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:138:17: sparse: sparse: incorrect type in initializer (different base types) @@ expected restricted __poll_t ( *poll )( ... ) @@ got unsigned int ( * )( ... ) @@
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:138:17: sparse: expected restricted __poll_t ( *poll )( ... )
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:138:17: sparse: got unsigned int ( * )( ... )
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
>> drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
>> drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:261:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:263:29: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:354:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:412:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:473:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:531:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: expected void const volatile [noderef] __user *ptr
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: got unsigned int [usertype] *
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:592:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __user *ptr @@ got unsigned int [usertype] * @@
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c:650:21: sparse: expected void const volatile [noderef] __user *ptr

vim +2388 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

d38ceaf99ed015 Alex Deucher 2015-04-20 2362
50da51744f005f Tom St Denis 2018-05-09 2363 /**
50da51744f005f Tom St Denis 2018-05-09 2364 * amdgpu_ttm_vram_write - Linear write access to VRAM
50da51744f005f Tom St Denis 2018-05-09 2365 *
50da51744f005f Tom St Denis 2018-05-09 2366 * Accesses VRAM via MMIO for debugging purposes.
50da51744f005f Tom St Denis 2018-05-09 2367 */
08cab989f77582 Tom St Denis 2017-08-29 2368 static ssize_t amdgpu_ttm_vram_write(struct file *f, const char __user *buf,
08cab989f77582 Tom St Denis 2017-08-29 2369 size_t size, loff_t *pos)
08cab989f77582 Tom St Denis 2017-08-29 2370 {
08cab989f77582 Tom St Denis 2017-08-29 2371 struct amdgpu_device *adev = file_inode(f)->i_private;
08cab989f77582 Tom St Denis 2017-08-29 2372 ssize_t result = 0;
08cab989f77582 Tom St Denis 2017-08-29 2373 int r;
08cab989f77582 Tom St Denis 2017-08-29 2374
08cab989f77582 Tom St Denis 2017-08-29 2375 if (size & 0x3 || *pos & 0x3)
08cab989f77582 Tom St Denis 2017-08-29 2376 return -EINVAL;
08cab989f77582 Tom St Denis 2017-08-29 2377
770d13b19fdf36 Christian König 2018-01-12 2378 if (*pos >= adev->gmc.mc_vram_size)
08cab989f77582 Tom St Denis 2017-08-29 2379 return -ENXIO;
08cab989f77582 Tom St Denis 2017-08-29 2380
08cab989f77582 Tom St Denis 2017-08-29 2381 while (size) {
08cab989f77582 Tom St Denis 2017-08-29 2382 unsigned long flags;
08cab989f77582 Tom St Denis 2017-08-29 2383 uint32_t value;
08cab989f77582 Tom St Denis 2017-08-29 2384
770d13b19fdf36 Christian König 2018-01-12 2385 if (*pos >= adev->gmc.mc_vram_size)
08cab989f77582 Tom St Denis 2017-08-29 2386 return result;
08cab989f77582 Tom St Denis 2017-08-29 2387
08cab989f77582 Tom St Denis 2017-08-29 @2388 r = get_user(value, (uint32_t *)buf);
08cab989f77582 Tom St Denis 2017-08-29 2389 if (r)
08cab989f77582 Tom St Denis 2017-08-29 2390 return r;
08cab989f77582 Tom St Denis 2017-08-29 2391
08cab989f77582 Tom St Denis 2017-08-29 2392 spin_lock_irqsave(&adev->mmio_idx_lock, flags);
c30572814df55b Tom St Denis 2017-09-13 2393 WREG32_NO_KIQ(mmMM_INDEX, ((uint32_t)*pos) | 0x80000000);
c30572814df55b Tom St Denis 2017-09-13 2394 WREG32_NO_KIQ(mmMM_INDEX_HI, *pos >> 31);
c30572814df55b Tom St Denis 2017-09-13 2395 WREG32_NO_KIQ(mmMM_DATA, value);
08cab989f77582 Tom St Denis 2017-08-29 2396 spin_unlock_irqrestore(&adev->mmio_idx_lock, flags);
08cab989f77582 Tom St Denis 2017-08-29 2397
08cab989f77582 Tom St Denis 2017-08-29 2398 result += 4;
08cab989f77582 Tom St Denis 2017-08-29 2399 buf += 4;
08cab989f77582 Tom St Denis 2017-08-29 2400 *pos += 4;
08cab989f77582 Tom St Denis 2017-08-29 2401 size -= 4;
08cab989f77582 Tom St Denis 2017-08-29 2402 }
08cab989f77582 Tom St Denis 2017-08-29 2403
08cab989f77582 Tom St Denis 2017-08-29 2404 return result;
08cab989f77582 Tom St Denis 2017-08-29 2405 }
08cab989f77582 Tom St Denis 2017-08-29 2406

---
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