mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-07-16 17:57:38 -04:00
Code Issues Packages Projects Releases Wiki Activity

habanalabs: Add INFO IOCTL opcode for time sync information

Browse Source 
Add a new opcode to the INFO IOCTL that retrieves the device time
alongside the host time, to allow a user application that want to measure
device time together with host time (such as a profiler) to synchronize
these times.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Tomer Tayar
2020-03-31 22:46:36 +03:00
committed by Oded Gabbay
parent ba7193c952
commit 25e7aeba60
7 changed files with 96 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/uapi/misc/habanalabs.h
View File

@@ -101,6 +101,8 @@ enum hl_device_status {
* HL_INFO_RESET_COUNT - Retrieve the counts of the soft and hard reset
* operations performed on the device since the last
* time the driver was loaded.
* HL_INFO_TIME_SYNC - Retrieve the device's time alongside the host's time
* for synchronization.
*/
#define HL_INFO_HW_IP_INFO 0
#define HL_INFO_HW_EVENTS 1
@@ -111,6 +113,7 @@ enum hl_device_status {
#define HL_INFO_HW_EVENTS_AGGREGATE 7
#define HL_INFO_CLK_RATE 8
#define HL_INFO_RESET_COUNT 9
#define HL_INFO_TIME_SYNC 10
#define HL_INFO_VERSION_MAX_LEN 128
#define HL_INFO_CARD_NAME_MAX_LEN 16
@@ -169,6 +172,11 @@ struct hl_info_reset_count {
__u32 soft_reset_cnt;
};
struct hl_info_time_sync {
__u64 device_time;
__u64 host_time;
};
struct hl_info_args {
/* Location of relevant struct in userspace */
__u64 return_pointer;