From: Lucas De Marchi lucas.demarchi@intel.com
[ Upstream commit ff57025c358603555f1e0ae0d50282a460433594 ]
Make sure to differentiate normal behavior, e.g. there's no stolen, from allocation errors or failure to initialize lower layers.
Reviewed-by: Francois Dugast francois.dugast@intel.com Reviewed-by: Himal Prasad Ghimiray himal.prasad.ghimiray@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20250213192909.996148-5-lucas.... Signed-off-by: Lucas De Marchi lucas.demarchi@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/xe/xe_device.c | 4 +++- drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c | 17 +++++++++-------- drivers/gpu/drm/xe/xe_ttm_stolen_mgr.h | 2 +- 3 files changed, 13 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index 4e1839b483a00..e22f29ac96631 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -722,7 +722,9 @@ int xe_device_probe(struct xe_device *xe) }
/* Allocate and map stolen after potential VRAM resize */ - xe_ttm_stolen_mgr_init(xe); + err = xe_ttm_stolen_mgr_init(xe); + if (err) + return err;
/* * Now that GT is initialized (TTM in particular), diff --git a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c index d414421f8c131..d9c9d2547aadf 100644 --- a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c +++ b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c @@ -207,17 +207,16 @@ static u64 detect_stolen(struct xe_device *xe, struct xe_ttm_stolen_mgr *mgr) #endif }
-void xe_ttm_stolen_mgr_init(struct xe_device *xe) +int xe_ttm_stolen_mgr_init(struct xe_device *xe) { - struct xe_ttm_stolen_mgr *mgr = drmm_kzalloc(&xe->drm, sizeof(*mgr), GFP_KERNEL); struct pci_dev *pdev = to_pci_dev(xe->drm.dev); + struct xe_ttm_stolen_mgr *mgr; u64 stolen_size, io_size; int err;
- if (!mgr) { - drm_dbg_kms(&xe->drm, "Stolen mgr init failed\n"); - return; - } + mgr = drmm_kzalloc(&xe->drm, sizeof(*mgr), GFP_KERNEL); + if (!mgr) + return -ENOMEM;
if (IS_SRIOV_VF(xe)) stolen_size = 0; @@ -230,7 +229,7 @@ void xe_ttm_stolen_mgr_init(struct xe_device *xe)
if (!stolen_size) { drm_dbg_kms(&xe->drm, "No stolen memory support\n"); - return; + return 0; }
/* @@ -246,7 +245,7 @@ void xe_ttm_stolen_mgr_init(struct xe_device *xe) io_size, PAGE_SIZE); if (err) { drm_dbg_kms(&xe->drm, "Stolen mgr init failed: %i\n", err); - return; + return err; }
drm_dbg_kms(&xe->drm, "Initialized stolen memory support with %llu bytes\n", @@ -254,6 +253,8 @@ void xe_ttm_stolen_mgr_init(struct xe_device *xe)
if (io_size) mgr->mapping = devm_ioremap_wc(&pdev->dev, mgr->io_base, io_size); + + return 0; }
u64 xe_ttm_stolen_io_offset(struct xe_bo *bo, u32 offset) diff --git a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.h b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.h index 1777245ff8101..8e877d1e839bd 100644 --- a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.h +++ b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.h @@ -12,7 +12,7 @@ struct ttm_resource; struct xe_bo; struct xe_device;
-void xe_ttm_stolen_mgr_init(struct xe_device *xe); +int xe_ttm_stolen_mgr_init(struct xe_device *xe); int xe_ttm_stolen_io_mem_reserve(struct xe_device *xe, struct ttm_resource *mem); bool xe_ttm_stolen_cpu_access_needs_ggtt(struct xe_device *xe); u64 xe_ttm_stolen_io_offset(struct xe_bo *bo, u32 offset);