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/*
* Copyright (c) 2017, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gk20a/gk20a.h"
#include "common/linux/vgpu/vgpu.h"
#include <linux/tegra_vgpu.h>
#include <nvgpu/hw/gv11b/hw_ctxsw_prog_gv11b.h>
int vgpu_gv11b_alloc_subctx_header(struct channel_gk20a *c)
{
struct ctx_header_desc *ctx = &c->ch_ctx.ctx_header;
struct tegra_vgpu_cmd_msg msg = {};
struct tegra_vgpu_alloc_ctx_header_params *p =
&msg.params.alloc_ctx_header;
int err;
msg.cmd = TEGRA_VGPU_CMD_ALLOC_CTX_HEADER;
msg.handle = vgpu_get_handle(c->g);
p->ch_handle = c->virt_ctx;
p->ctx_header_va = __nvgpu_vm_alloc_va(c->vm,
ctxsw_prog_fecs_header_v(),
gmmu_page_size_kernel);
if (!p->ctx_header_va) {
nvgpu_err(c->g, "alloc va failed for ctx_header");
return -ENOMEM;
}
err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
err = err ? err : msg.ret;
if (unlikely(err)) {
nvgpu_err(c->g, "alloc ctx_header failed err %d", err);
__nvgpu_vm_free_va(c->vm, p->ctx_header_va,
gmmu_page_size_kernel);
return err;
}
ctx->mem.gpu_va = p->ctx_header_va;
return err;
}
void vgpu_gv11b_free_subctx_header(struct channel_gk20a *c)
{
struct ctx_header_desc *ctx = &c->ch_ctx.ctx_header;
struct tegra_vgpu_cmd_msg msg = {};
struct tegra_vgpu_free_ctx_header_params *p =
&msg.params.free_ctx_header;
int err;
if (ctx->mem.gpu_va) {
msg.cmd = TEGRA_VGPU_CMD_FREE_CTX_HEADER;
msg.handle = vgpu_get_handle(c->g);
p->ch_handle = c->virt_ctx;
err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
err = err ? err : msg.ret;
if (unlikely(err))
nvgpu_err(c->g, "free ctx_header failed err %d", err);
__nvgpu_vm_free_va(c->vm, ctx->mem.gpu_va,
gmmu_page_size_kernel);
ctx->mem.gpu_va = 0;
}
}
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