diff options
| author | Philip Yang <Philip.Yang@amd.com> | 2020-02-06 01:59:15 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-21 04:46:14 +0300 |
| commit | 40ce74d1b28d38e5debc14b5a6ddd9071ae2d310 (patch) | |
| tree | 072c2bfb6bc286ea4967954e2c6f6183a7a5ee14 /drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | |
| parent | 2aeb742b72121c539cfc9cff8c00c5ca32ba4b1c (diff) | |
| download | linux-40ce74d1b28d38e5debc14b5a6ddd9071ae2d310.tar.xz | |
drm/amdkfd: add svm ioctl API
Add svm (shared virtual memory) ioctl data structure and API definition.
The svm ioctl API is designed to be extensible in the future. All
operations are provided by a single IOCTL to preserve ioctl number
space. The arguments structure ends with a variable size array of
attributes that can be used to set or get one or multiple attributes.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_chardev.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 242e8b28feac..f888c2c673bb 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -1744,6 +1744,16 @@ static int kfd_ioctl_smi_events(struct file *filep, return kfd_smi_event_open(dev, &args->anon_fd); } +static int kfd_ioctl_svm(struct file *filep, struct kfd_process *p, void *data) +{ + int r = 0; + + if (p->svm_disabled) + return -EPERM; + + return r; +} + #define AMDKFD_IOCTL_DEF(ioctl, _func, _flags) \ [_IOC_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, \ .cmd_drv = 0, .name = #ioctl} @@ -1842,6 +1852,8 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = { AMDKFD_IOCTL_DEF(AMDKFD_IOC_SMI_EVENTS, kfd_ioctl_smi_events, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SVM, kfd_ioctl_svm, 0), }; #define AMDKFD_CORE_IOCTL_COUNT ARRAY_SIZE(amdkfd_ioctls) |