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gpu: nvgpu: Clear comptags for whole buffer

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Clear comptags for whole buffer when nvgpu sees the buffer for the
first time.

Change-Id: I67108ce0f0def46ddda1aa9b9bb5ea22549cce13
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1013517
(cherry picked from commit 544446aacdc695dc2e27c42a0086292cd69c2eee)
Reviewed-on: http://git-master/r/1031009
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Terje Bergstrom
2016-02-18 11:23:44 -08:00
parent 704f29335f
commit a9b9597a10
1 changed files with 7 additions and 16 deletions
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23
drivers/gpu/nvgpu/gk20a/mm_gk20a.c
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@@ -1,7 +1,7 @@
/*
* GK20A memory management
*
* Copyright (c) 2011-2017, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2011-2016, 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,
@@ -1290,12 +1290,6 @@ u64 gk20a_locked_gmmu_map(struct vm_gk20a *vm,
int ctag_granularity = g->ops.fb.compression_page_size(g);
u32 ctag_lines = DIV_ROUND_UP_ULL(size, ctag_granularity);
if (clear_ctags && ctag_offset) {
/* init/clear the ctag buffer */
g->ops.ltc.cbc_ctrl(g, gk20a_cbc_op_clear,
ctag_offset, ctag_offset + ctag_lines - 1);
}
/* Allocate (or validate when map_offset != 0) the virtual address. */
if (!map_offset) {
map_offset = gk20a_vm_alloc_va(vm, size,
@@ -1651,17 +1645,14 @@ u64 gk20a_vm_map(struct vm_gk20a *vm,
bfr.kind_v = bfr.uc_kind_v;
} else {
gk20a_get_comptags(d, dmabuf, &comptags);
clear_ctags = true;
if (comptags.lines < comptags.allocated_lines) {
/* clear tail-padding comptags */
u32 ctagmin = comptags.offset + comptags.lines;
u32 ctagmax = comptags.offset +
comptags.allocated_lines - 1;
if (g->ops.ltc.cbc_ctrl)
g->ops.ltc.cbc_ctrl(g, gk20a_cbc_op_clear,
ctagmin, ctagmax);
}
comptags.offset,
comptags.offset +
comptags.allocated_lines - 1);
else
clear_ctags = true;
}
}