diff options
| author | Ashutosh Dixit <ashutosh.dixit@intel.com> | 2024-06-17 18:46:01 -0700 |
|---|---|---|
| committer | Ashutosh Dixit <ashutosh.dixit@intel.com> | 2024-06-18 12:40:36 -0700 |
| commit | efb315d0a013cdc8b1e49f5c07b1a2972bc624d4 (patch) | |
| tree | baa67b380a11d1290a8803445aaffc78def707b2 /include/uapi/drm | |
| parent | e936f885f1e96f59d9d05fb6cb5a02b9b9b88a05 (diff) | |
drm/xe/oa/uapi: Read file_operation
Implement the OA stream read file_operation. Both blocking and non-blocking
reads are supported. As part of read system call, the read copies OA perf
data from the OA buffer to the user buffer, after appending packet headers
for status and data packets.
v2: Drop OA report headers, implement DRM_XE_PERF_IOCTL_STATUS (Umesh)
v3: Introduce 'struct drm_xe_oa_stream_status'
v4: Define oa_status register bitfields (Umesh)
v5: Add extensions to 'struct drm_xe_oa_stream_status'
v6: Minor cleanup, eliminate report32 variable
v7: Use -EIO to signal to userspace to read OASTATUS using
DRM_XE_PERF_IOCTL_STATUS, change previous sites returning -EIO to
return -EINVAL
Make drm_xe_oa_stream_status bits contiguous (Jose, Umesh)
rmw oa_status bits (Umesh)
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240618014609.3233427-10-ashutosh.dixit@intel.com
Diffstat (limited to 'include/uapi/drm')
| -rw-r--r-- | include/uapi/drm/xe_drm.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/uapi/drm/xe_drm.h b/include/uapi/drm/xe_drm.h index 1e09f786b3e6..03a6e479227a 100644 --- a/include/uapi/drm/xe_drm.h +++ b/include/uapi/drm/xe_drm.h @@ -1570,6 +1570,26 @@ struct drm_xe_oa_config { __u64 regs_ptr; }; +/** + * struct drm_xe_oa_stream_status - OA stream status returned from + * @DRM_XE_PERF_IOCTL_STATUS perf fd ioctl. Userspace can call the ioctl to + * query stream status in response to EIO errno from perf fd read(). + */ +struct drm_xe_oa_stream_status { + /** @extensions: Pointer to the first extension struct, if any */ + __u64 extensions; + + /** @oa_status: OA stream status (see Bspec 46717/61226) */ + __u64 oa_status; +#define DRM_XE_OASTATUS_MMIO_TRG_Q_FULL (1 << 3) +#define DRM_XE_OASTATUS_COUNTER_OVERFLOW (1 << 2) +#define DRM_XE_OASTATUS_BUFFER_OVERFLOW (1 << 1) +#define DRM_XE_OASTATUS_REPORT_LOST (1 << 0) + + /** @reserved: reserved for future use */ + __u64 reserved[3]; +}; + #if defined(__cplusplus) } #endif |