mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
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cefc747ba2
Client OS was accessing gpu registers directly, resulting in a crash: - Use gk20a version of init_gpu_characteristics - Set cbc_ctrl callback to NULL Bug 1749990 Bug 1749896 Change-Id: I7e5eea52c5d1d0c2ca7ca5e4d34dc4fc21f4e093 Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com> Reviewed-on: http://git-master/r/1120473 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
/*
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* Virtualized GPU L2
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*
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* Copyright (c) 2014-2016 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 "vgpu/vgpu.h"
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static int vgpu_determine_L2_size_bytes(struct gk20a *g)
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{
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struct gk20a_platform *platform = gk20a_get_platform(g->dev);
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u32 cache_size = 0;
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gk20a_dbg_fn("");
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if (vgpu_get_attribute(platform->virt_handle,
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TEGRA_VGPU_ATTRIB_L2_SIZE, &cache_size))
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dev_err(dev_from_gk20a(g), "unable to get L2 size\n");
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return cache_size;
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}
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static int vgpu_ltc_init_comptags(struct gk20a *g, struct gr_gk20a *gr)
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{
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struct gk20a_platform *platform = gk20a_get_platform(g->dev);
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u32 max_comptag_lines = 0;
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int err;
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gk20a_dbg_fn("");
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err = vgpu_get_attribute(platform->virt_handle,
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TEGRA_VGPU_ATTRIB_CACHELINE_SIZE,
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&gr->cacheline_size);
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err |= vgpu_get_attribute(platform->virt_handle,
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TEGRA_VGPU_ATTRIB_COMPTAGS_PER_CACHELINE,
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&gr->comptags_per_cacheline);
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err |= vgpu_get_attribute(platform->virt_handle,
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TEGRA_VGPU_ATTRIB_SLICES_PER_LTC,
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&gr->slices_per_ltc);
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err |= vgpu_get_attribute(platform->virt_handle,
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TEGRA_VGPU_ATTRIB_COMPTAG_LINES, &max_comptag_lines);
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if (err) {
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dev_err(dev_from_gk20a(g), "failed to get ctags atributes\n");
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return -ENXIO;
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}
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if (max_comptag_lines < 2)
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return -ENXIO;
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err = gk20a_comptag_allocator_init(&gr->comp_tags, max_comptag_lines);
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if (err)
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return err;
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return 0;
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}
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static void vgpu_ltc_init_fs_state(struct gk20a *g)
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{
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struct gk20a_platform *platform = gk20a_get_platform(g->dev);
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u32 ltc_count = 0;
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int err;
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gk20a_dbg_fn("");
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err = vgpu_get_attribute(platform->virt_handle,
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TEGRA_VGPU_ATTRIB_LTC_COUNT, <c_count);
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WARN_ON(err);
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g->ltc_count = ltc_count;
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}
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void vgpu_init_ltc_ops(struct gpu_ops *gops)
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{
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gops->ltc.determine_L2_size_bytes = vgpu_determine_L2_size_bytes;
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gops->ltc.init_comptags = vgpu_ltc_init_comptags;
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gops->ltc.init_fs_state = vgpu_ltc_init_fs_state;
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gops->ltc.cbc_ctrl = NULL;
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}
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