diff options
| author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2026-02-18 21:55:43 +0100 |
|---|---|---|
| committer | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2026-02-20 15:49:58 +0100 |
| commit | 2d892455f38b82fb4e93f45e7a8e8ea41683ca78 (patch) | |
| tree | a2e66b81c06213fb3382f7bfcf4d32b1053e44d5 /drivers/gpu | |
| parent | c2366539d3746219000f58d821fdf8607bd8cfec (diff) | |
| download | linux-2d892455f38b82fb4e93f45e7a8e8ea41683ca78.tar.gz linux-2d892455f38b82fb4e93f45e7a8e8ea41683ca78.zip | |
drm/xe/pf: Expose LMTT page size
The underlying LMTT implementation already provides the info about
the page size it is using. There is no need to have a separate
helper function that is making assumption about the required size.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Piotr Piórkowski <piotr.piorkowski@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patch.msgid.link/20260218205553.3561-2-michal.wajdeczko@intel.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_lmtt.c | 17 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_lmtt.h | 1 |
3 files changed, 19 insertions, 2 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c index 888193e1d2c5..e06baf12e108 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c +++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c @@ -1451,8 +1451,7 @@ int xe_gt_sriov_pf_config_set_fair_dbs(struct xe_gt *gt, unsigned int vfid, static u64 pf_get_lmem_alignment(struct xe_gt *gt) { - /* this might be platform dependent */ - return SZ_2M; + return xe_lmtt_page_size(>->tile->sriov.pf.lmtt); } static u64 pf_get_min_spare_lmem(struct xe_gt *gt) diff --git a/drivers/gpu/drm/xe/xe_lmtt.c b/drivers/gpu/drm/xe/xe_lmtt.c index 2077e1ef8b43..b583e0f20183 100644 --- a/drivers/gpu/drm/xe/xe_lmtt.c +++ b/drivers/gpu/drm/xe/xe_lmtt.c @@ -57,6 +57,23 @@ static u64 lmtt_page_size(struct xe_lmtt *lmtt) return BIT_ULL(lmtt->ops->lmtt_pte_shift(0)); } +/** + * xe_lmtt_page_size() - Get LMTT page size. + * @lmtt: the &xe_lmtt + * + * This function shall be called only by PF. + * + * Return: LMTT page size. + */ +u64 xe_lmtt_page_size(struct xe_lmtt *lmtt) +{ + lmtt_assert(lmtt, IS_SRIOV_PF(lmtt_to_xe(lmtt))); + lmtt_assert(lmtt, xe_device_has_lmtt(lmtt_to_xe(lmtt))); + lmtt_assert(lmtt, lmtt->ops); + + return lmtt_page_size(lmtt); +} + static struct xe_lmtt_pt *lmtt_pt_alloc(struct xe_lmtt *lmtt, unsigned int level) { unsigned int num_entries = level ? lmtt->ops->lmtt_pte_num(level) : 0; diff --git a/drivers/gpu/drm/xe/xe_lmtt.h b/drivers/gpu/drm/xe/xe_lmtt.h index 75a234fbf367..8fa387b38c52 100644 --- a/drivers/gpu/drm/xe/xe_lmtt.h +++ b/drivers/gpu/drm/xe/xe_lmtt.h @@ -20,6 +20,7 @@ int xe_lmtt_prepare_pages(struct xe_lmtt *lmtt, unsigned int vfid, u64 range); int xe_lmtt_populate_pages(struct xe_lmtt *lmtt, unsigned int vfid, struct xe_bo *bo, u64 offset); void xe_lmtt_drop_pages(struct xe_lmtt *lmtt, unsigned int vfid); u64 xe_lmtt_estimate_pt_size(struct xe_lmtt *lmtt, u64 size); +u64 xe_lmtt_page_size(struct xe_lmtt *lmtt); #else static inline int xe_lmtt_init(struct xe_lmtt *lmtt) { return 0; } static inline void xe_lmtt_init_hw(struct xe_lmtt *lmtt) { } |