From: Lukasz Laguna Date: Wed, 12 Nov 2025 13:22:16 +0000 (+0100) Subject: drm/xe/pf: Add helper to retrieve VF's LMEM object X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=274186fab373a047ed2ce17c9c8035c9c17474f4;p=thirdparty%2Fkernel%2Flinux.git drm/xe/pf: Add helper to retrieve VF's LMEM object Instead of accessing VF's lmem_obj directly, introduce a helper function to make the access more convenient. Signed-off-by: Lukasz Laguna Reviewed-by: Michal Wajdeczko Link: https://patch.msgid.link/20251112132220.516975-21-michal.winiarski@intel.com Signed-off-by: Michał Winiarski --- 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 5b4e1d2da5adc..9c14f02961355 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c +++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c @@ -1692,6 +1692,32 @@ int xe_gt_sriov_pf_config_bulk_set_lmem(struct xe_gt *gt, unsigned int vfid, "LMEM", n, err); } +static struct xe_bo *pf_get_vf_config_lmem_obj(struct xe_gt *gt, unsigned int vfid) +{ + struct xe_gt_sriov_config *config = pf_pick_vf_config(gt, vfid); + + return config->lmem_obj; +} + +/** + * xe_gt_sriov_pf_config_get_lmem_obj() - Take a reference to the struct &xe_bo backing VF LMEM. + * @gt: the &xe_gt + * @vfid: the VF identifier (can't be 0) + * + * This function can only be called on PF. + * The caller is responsible for calling xe_bo_put() on the returned object. + * + * Return: pointer to struct &xe_bo backing VF LMEM (if any). + */ +struct xe_bo *xe_gt_sriov_pf_config_get_lmem_obj(struct xe_gt *gt, unsigned int vfid) +{ + xe_gt_assert(gt, vfid); + + guard(mutex)(xe_gt_sriov_pf_master_mutex(gt)); + + return xe_bo_get(pf_get_vf_config_lmem_obj(gt, vfid)); +} + static u64 pf_query_free_lmem(struct xe_gt *gt) { struct xe_tile *tile = gt->tile; diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h index 66223c0e948db..4975730423d72 100644 --- a/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h +++ b/drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h @@ -36,6 +36,7 @@ int xe_gt_sriov_pf_config_set_lmem(struct xe_gt *gt, unsigned int vfid, u64 size int xe_gt_sriov_pf_config_set_fair_lmem(struct xe_gt *gt, unsigned int vfid, unsigned int num_vfs); int xe_gt_sriov_pf_config_bulk_set_lmem(struct xe_gt *gt, unsigned int vfid, unsigned int num_vfs, u64 size); +struct xe_bo *xe_gt_sriov_pf_config_get_lmem_obj(struct xe_gt *gt, unsigned int vfid); u32 xe_gt_sriov_pf_config_get_exec_quantum(struct xe_gt *gt, unsigned int vfid); int xe_gt_sriov_pf_config_set_exec_quantum(struct xe_gt *gt, unsigned int vfid, u32 exec_quantum);