/*
* Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "gk20a/gk20a.h"
#include "vgpu_subctx_gv11b.h"
#include <nvgpu/vgpu/vgpu.h>
#include <nvgpu/vgpu/tegra_vgpu.h>
#include <nvgpu/channel.h>
#include <nvgpu/hw/gv11b/hw_ctxsw_prog_gv11b.h>
int vgpu_gv11b_alloc_subctx_header(struct channel_gk20a *c)
{
struct nvgpu_mem *ctxheader = &c->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;
}
ctxheader->gpu_va = p->ctx_header_va;
return err;
}
void vgpu_gv11b_free_subctx_header(struct channel_gk20a *c)
{
struct nvgpu_mem *ctxheader = &c->ctx_header;
struct tegra_vgpu_cmd_msg msg = {};
struct tegra_vgpu_free_ctx_header_params *p =
&msg.params.free_ctx_header;
int err;
if (ctxheader->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, ctxheader->gpu_va,
GMMU_PAGE_SIZE_KERNEL);
ctxheader->gpu_va = 0;
}
}
