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ac98827c9d
LTC register write is followed by a register read and if data doesn't match code will report the error. Renamed existing nvgpu_writel_check function as nvgpu_writel_loop as it loops until the write get success. nvgpu_writel_check function write and read back and compare the data. Bug 2039150 Change-Id: I0a49be36aad23936f2d58aa82872710827da1d32 Signed-off-by: Vinod G <vinodg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1762344 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
30 lines
845 B
C
30 lines
845 B
C
/*
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* Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <nvgpu/io.h>
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#include <nvgpu/types.h>
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#include "gk20a/gk20a.h"
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void nvgpu_writel_check(struct gk20a *g, u32 r, u32 v)
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{
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u32 read_val = 0U;
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nvgpu_writel(g, r, v);
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read_val = nvgpu_readl(g, r);
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if (v != read_val) {
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nvgpu_log(g, gpu_dbg_reg, "r=0x%x rd=0x%x wr=0x%x (mismatch)",
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r, read_val, v);
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}
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}
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