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| author |   Jay Cornwall <Jay.Cornwall@amd.com> | 2017-05-02 17:39:37 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2018-09-26 21:09:15 -0500 |
| commit | 5df099e8bc83f4f3af8711ee0b9b8faef359ffff (patch) | |
| tree | c2db43f5a371b1de7dfe28192b98aed435e67753 /drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h | |
| parent | drm/amdkfd: Report SDMA firmware version in the topology (diff) | |
| download | wireguard-linux-5df099e8bc83f4f3af8711ee0b9b8faef359ffff.tar.xz wireguard-linux-5df099e8bc83f4f3af8711ee0b9b8faef359ffff.zip | |
drm/amdkfd: Add wavefront context save state retrieval ioctl
Wavefront context save data is of interest to userspace clients for
debugging static wavefront state. The MQD contains two parameters
required to parse the control stack and the control stack itself
is kept in the MQD from gfx9 onwards.
Add an ioctl to fetch the context save area and control stack offsets
and to copy the control stack to a userspace address if it is kept in
the MQD.
Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h index 4e84052d4e21..f8261313ae7b 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.h @@ -43,6 +43,9 @@ * * @is_occupied: Checks if the relevant HQD slot is occupied. * + * @get_wave_state: Retrieves context save state and optionally copies the + * control stack, if kept in the MQD, to the given userspace address. + * * @mqd_mutex: Mqd manager mutex. * * @dev: The kfd device structure coupled with this module. @@ -85,6 +88,11 @@ struct mqd_manager { uint64_t queue_address, uint32_t pipe_id, uint32_t queue_id); + int (*get_wave_state)(struct mqd_manager *mm, void *mqd, + void __user *ctl_stack, + u32 *ctl_stack_used_size, + u32 *save_area_used_size); + #if defined(CONFIG_DEBUG_FS) int (*debugfs_show_mqd)(struct seq_file *m, void *data); #endif |