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/*
* Virtualized GPU L2
*
* Copyright (c) 2014-2015 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 "vgpu/vgpu.h"
static int vgpu_determine_L2_size_bytes(struct gk20a *g)
{
struct gk20a_platform *platform = gk20a_get_platform(g->dev);
u32 cache_size = 0;
gk20a_dbg_fn("");
if (vgpu_get_attribute(platform->virt_handle,
TEGRA_VGPU_ATTRIB_L2_SIZE, &cache_size))
dev_err(dev_from_gk20a(g), "unable to get L2 size\n");
return cache_size;
}
static int vgpu_ltc_init_comptags(struct gk20a *g, struct gr_gk20a *gr)
{
struct gk20a_platform *platform = gk20a_get_platform(g->dev);
u32 max_comptag_lines = 0;
int err;
gk20a_dbg_fn("");
err = vgpu_get_attribute(platform->virt_handle,
TEGRA_VGPU_ATTRIB_CACHELINE_SIZE,
&gr->cacheline_size);
err |= vgpu_get_attribute(platform->virt_handle,
TEGRA_VGPU_ATTRIB_COMPTAGS_PER_CACHELINE,
&gr->comptags_per_cacheline);
err |= vgpu_get_attribute(platform->virt_handle,
TEGRA_VGPU_ATTRIB_SLICES_PER_LTC,
&gr->slices_per_ltc);
err |= vgpu_get_attribute(platform->virt_handle,
TEGRA_VGPU_ATTRIB_COMPTAG_LINES, &max_comptag_lines);
if (err) {
dev_err(dev_from_gk20a(g), "failed to get ctags atributes\n");
return -ENXIO;
}
if (max_comptag_lines < 2)
return -ENXIO;
__gk20a_allocator_init(&gr->comp_tags, NULL, "comptag",
1, max_comptag_lines - 1, 1, 10, 0); /* length*/
return 0;
}
static void vgpu_ltc_init_fs_state(struct gk20a *g)
{
struct gk20a_platform *platform = gk20a_get_platform(g->dev);
u32 ltc_count = 0;
int err;
gk20a_dbg_fn("");
err = vgpu_get_attribute(platform->virt_handle,
TEGRA_VGPU_ATTRIB_LTC_COUNT, <c_count);
WARN_ON(err);
g->ltc_count = ltc_count;
}
void vgpu_init_ltc_ops(struct gpu_ops *gops)
{
gops->ltc.determine_L2_size_bytes = vgpu_determine_L2_size_bytes;
gops->ltc.init_comptags = vgpu_ltc_init_comptags;
gops->ltc.init_fs_state = vgpu_ltc_init_fs_state;
}
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