From d215bc1107a8a032d18e515e55d5e29c7192f15e Mon Sep 17 00:00:00 2001 From: Konsta Holtta Date: Fri, 20 May 2016 09:12:23 +0300 Subject: gpu: nvgpu: detect vidmem configuration from HW Read video memory size from hardware during initialization for devices that support it. JIRA DNVGPU-14 Change-Id: If190f2d89f7148520ee274ca674f972987c8056d Signed-off-by: Konsta Holtta Reviewed-on: http://git-master/r/1157215 Reviewed-by: Terje Bergstrom Tested-by: Terje Bergstrom --- drivers/gpu/nvgpu/gm206/mm_gm206.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 drivers/gpu/nvgpu/gm206/mm_gm206.c (limited to 'drivers/gpu/nvgpu/gm206/mm_gm206.c') diff --git a/drivers/gpu/nvgpu/gm206/mm_gm206.c b/drivers/gpu/nvgpu/gm206/mm_gm206.c new file mode 100644 index 00000000..c3763d58 --- /dev/null +++ b/drivers/gpu/nvgpu/gm206/mm_gm206.c @@ -0,0 +1,35 @@ +/* + * GM206 memory management + * + * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#include "gk20a/gk20a.h" +#include "gm20b/mm_gm20b.h" + +#include "hw_fbpa_gm206.h" +#include "hw_top_gm206.h" + +static size_t gm206_mm_get_vidmem_size(struct gk20a *g) +{ + u32 fbpas = top_num_fbpas_value_v( + gk20a_readl(g, top_num_fbpas_r())); + u32 ram = fbpa_cstatus_ramamount_v( + gk20a_readl(g, fbpa_cstatus_r())); + return (size_t)fbpas * ram * SZ_1M; +} + +void gm206_init_mm(struct gpu_ops *gops) +{ + gm20b_init_mm(gops); + gops->mm.get_vidmem_size = gm206_mm_get_vidmem_size; +} -- cgit v1.2.2