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| author | Matthew Brost <matthew.brost@intel.com> | 2024-06-11 07:40:47 -0700 |
|---|---|---|
| committer | Matthew Brost <matthew.brost@intel.com> | 2024-06-12 19:10:22 -0700 |
| commit | 49cc215aad7f5b953d4fc85c75b044f0abdc10cd (patch) | |
| tree | 0befe7013999699723a89b5485f46bd0131a31d7 | |
| parent | 1bf1ca4e326c7d0bdf4aa1946d4ba0ccdae8d09e (diff) | |
| download | linux-49cc215aad7f5b953d4fc85c75b044f0abdc10cd.tar.gz linux-49cc215aad7f5b953d4fc85c75b044f0abdc10cd.zip | |
drm/xe: Add xe_gt_clock_interval_to_ms helper
Add helper to convert GT clock ticks to msec. Useful for determining if
timeouts occur by examing GT clock ticks.
v6:
- s/nom/n , s/dom/d (Jonathan)
- include math64 (CI)
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240611144053.2805091-6-matthew.brost@intel.com
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt_clock.c | 20 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt_clock.h | 1 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt_clock.c b/drivers/gpu/drm/xe/xe_gt_clock.c index 9ff2061133df..86c2d62b4bdc 100644 --- a/drivers/gpu/drm/xe/xe_gt_clock.c +++ b/drivers/gpu/drm/xe/xe_gt_clock.c @@ -3,6 +3,8 @@ * Copyright © 2022 Intel Corporation */ +#include <linux/math64.h> + #include "xe_gt_clock.h" #include "regs/xe_gt_regs.h" @@ -79,3 +81,21 @@ int xe_gt_clock_init(struct xe_gt *gt) gt->info.reference_clock = freq; return 0; } + +static u64 div_u64_roundup(u64 n, u32 d) +{ + return div_u64(n + d - 1, d); +} + +/** + * xe_gt_clock_interval_to_ms - Convert sampled GT clock ticks to msec + * + * @gt: the &xe_gt + * @count: count of GT clock ticks + * + * Returns: time in msec + */ +u64 xe_gt_clock_interval_to_ms(struct xe_gt *gt, u64 count) +{ + return div_u64_roundup(count * MSEC_PER_SEC, gt->info.reference_clock); +} diff --git a/drivers/gpu/drm/xe/xe_gt_clock.h b/drivers/gpu/drm/xe/xe_gt_clock.h index 44fa0371b973..3adeb7baaca4 100644 --- a/drivers/gpu/drm/xe/xe_gt_clock.h +++ b/drivers/gpu/drm/xe/xe_gt_clock.h @@ -11,5 +11,6 @@ struct xe_gt; int xe_gt_clock_init(struct xe_gt *gt); +u64 xe_gt_clock_interval_to_ms(struct xe_gt *gt, u64 count); #endif |