From bda438b8badc34d4752c46adf4ce0e5524e230ff Mon Sep 17 00:00:00 2001 From: Michal Wajdeczko Date: Mon, 15 Apr 2024 19:39:34 +0200 Subject: [PATCH] drm/xe: Add xe_ttm_vram_get_avail The PF driver will need to know size of the remaining available VRAM to estimate fair VRAM allocations that could be used across all VFs in automatic VFs provisioning mode. Add helper function for that. We will use it in upcoming patch. Reviewed-by: Himal Prasad Ghimiray Signed-off-by: Michal Wajdeczko Link: https://patchwork.freedesktop.org/patch/msgid/20240415173937.1287-4-michal.wajdeczko@intel.com --- drivers/gpu/drm/xe/xe_ttm_vram_mgr.c | 12 ++++++++++++ drivers/gpu/drm/xe/xe_ttm_vram_mgr.h | 1 + 2 files changed, 13 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c index 0678faf832126..8a1f460ff20b0 100644 --- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c +++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.c @@ -478,3 +478,15 @@ void xe_ttm_vram_get_used(struct ttm_resource_manager *man, *used_visible = mgr->visible_size - mgr->visible_avail; mutex_unlock(&mgr->lock); } + +u64 xe_ttm_vram_get_avail(struct ttm_resource_manager *man) +{ + struct xe_ttm_vram_mgr *mgr = to_xe_ttm_vram_mgr(man); + u64 avail; + + mutex_lock(&mgr->lock); + avail = mgr->mm.avail; + mutex_unlock(&mgr->lock); + + return avail; +} diff --git a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.h b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.h index d184e19a92305..cc76050e376dd 100644 --- a/drivers/gpu/drm/xe/xe_ttm_vram_mgr.h +++ b/drivers/gpu/drm/xe/xe_ttm_vram_mgr.h @@ -25,6 +25,7 @@ int xe_ttm_vram_mgr_alloc_sgt(struct xe_device *xe, void xe_ttm_vram_mgr_free_sgt(struct device *dev, enum dma_data_direction dir, struct sg_table *sgt); +u64 xe_ttm_vram_get_avail(struct ttm_resource_manager *man); u64 xe_ttm_vram_get_cpu_visible_size(struct ttm_resource_manager *man); void xe_ttm_vram_get_used(struct ttm_resource_manager *man, u64 *used, u64 *used_visible); -- 2.30.2