diff options
| author | Harish Chegondi <harish.chegondi@intel.com> | 2025-02-25 17:47:05 -0800 |
|---|---|---|
| committer | Ashutosh Dixit <ashutosh.dixit@intel.com> | 2025-02-26 11:30:56 -0800 |
| commit | a2d6f86bbcb497f8e28795a3e4d27861dea020df (patch) | |
| tree | de073ac96a48a375aefaab95874c9f4cd2cbf02b | |
| parent | 1a7460a1976d4a9cba1545b071a45c31c1786e38 (diff) | |
drm/xe/topology: Add a function to find the index of the last enabled DSS in a mask
Last enabled DSS in a DSS mask can help estimate the maximum DSSes enabled
in the DSS mask, as the enabled DSSes can be discontiguous.
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/79944bb27eb4f7ce5df01f964aebbf431b3a6c61.1740533885.git.harish.chegondi@intel.com
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt_topology.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt_topology.h b/drivers/gpu/drm/xe/xe_gt_topology.h index 746b325bbf6e..a72d26ba0653 100644 --- a/drivers/gpu/drm/xe/xe_gt_topology.h +++ b/drivers/gpu/drm/xe/xe_gt_topology.h @@ -25,6 +25,19 @@ void xe_gt_topology_init(struct xe_gt *gt); void xe_gt_topology_dump(struct xe_gt *gt, struct drm_printer *p); +/** + * xe_gt_topology_mask_last_dss() - Returns the index of the last DSS in a mask. + * @mask: Input DSS mask + * + * Return: Index of the last DSS in the input DSS mask, + * XE_MAX_DSS_FUSE_BITS if DSS mask is empty. + */ +static inline unsigned int +xe_gt_topology_mask_last_dss(const xe_dss_mask_t mask) +{ + return find_last_bit(mask, XE_MAX_DSS_FUSE_BITS); +} + unsigned int xe_dss_mask_group_ffs(const xe_dss_mask_t mask, int groupsize, int groupnum); |