From 1d74159021e9a4e58c422f0b91e2a6fcb884c54f Mon Sep 17 00:00:00 2001 From: Mukul Joshi Date: Tue, 25 Apr 2023 14:11:56 -0400 Subject: [PATCH] drm/ttm: Helper function to get TTM mem limit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a helper function to get TTM memory limit. This is needed by KFD to set its own internal memory limits. Signed-off-by: Mukul Joshi Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/ttm/ttm_tt.c | 6 ++++++ include/drm/ttm/ttm_tt.h | 2 +- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index ab725d9d14a6..feac2f2c736e 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -450,3 +450,9 @@ ttm_kmap_iter_tt_init(struct ttm_kmap_iter_tt *iter_tt, return &iter_tt->base; } EXPORT_SYMBOL(ttm_kmap_iter_tt_init); + +unsigned long ttm_tt_pages_limit(void) +{ + return ttm_pages_limit; +} +EXPORT_SYMBOL(ttm_tt_pages_limit); diff --git a/include/drm/ttm/ttm_tt.h b/include/drm/ttm/ttm_tt.h index 977ca195a536..a4eff85b1f44 100644 --- a/include/drm/ttm/ttm_tt.h +++ b/include/drm/ttm/ttm_tt.h @@ -222,7 +222,7 @@ void ttm_tt_mgr_init(unsigned long num_pages, unsigned long num_dma32_pages); struct ttm_kmap_iter *ttm_kmap_iter_tt_init(struct ttm_kmap_iter_tt *iter_tt, struct ttm_tt *tt); - +unsigned long ttm_tt_pages_limit(void); #if IS_ENABLED(CONFIG_AGP) #include