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git://nv-tegra.nvidia.com/linux-nvgpu.git
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6a315a5a6d
Move code used for transitioning between link and sublink modes into a separate unit called 'link_mode_transition' under subelement 'nvlink'. Also aggregate all the link/sublink mode related ops under g->ops.nvlink.link_mode_transitions. JIRA NVGPU-2862 Change-Id: I289faa10fd1c83b6b8d028b44fe244531ca42b15 Signed-off-by: Tejal Kudav <tkudav@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2035794 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*
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* Copyright (c) 2018-2019, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <nvgpu/gk20a.h>
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#include <nvgpu/nvlink.h>
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#include <nvgpu/nvlink_probe.h>
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#include <nvgpu/enabled.h>
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#ifdef CONFIG_TEGRA_NVLINK
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int nvgpu_nvlink_speed_config(struct gk20a *g)
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{
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return g->ops.nvlink.speed_config(g);
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}
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int nvgpu_nvlink_early_init(struct gk20a *g)
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{
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return g->ops.nvlink.early_init(g);
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}
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int nvgpu_nvlink_link_early_init(struct gk20a *g)
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{
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u32 link_id;
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/*
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* First check the topology and setup connectivity
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* HACK: we are only enabling one link for now!!!
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*/
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link_id = (u32)(ffs(g->nvlink.discovered_links) - 1UL);
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g->nvlink.links[link_id].remote_info.is_connected = true;
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g->nvlink.links[link_id].remote_info.device_type =
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nvgpu_nvlink_endp_tegra;
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return g->ops.nvlink.link_early_init(g, BIT32(link_id));
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}
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int nvgpu_nvlink_interface_init(struct gk20a *g)
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{
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int err;
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err = g->ops.nvlink.interface_init(g);
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return err;
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}
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int nvgpu_nvlink_interface_disable(struct gk20a *g)
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{
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int err = 0;
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if (g->ops.nvlink.interface_disable != NULL) {
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err = g->ops.nvlink.interface_disable(g);
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}
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return err;
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}
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int nvgpu_nvlink_dev_shutdown(struct gk20a *g)
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{
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int err;
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err = g->ops.nvlink.shutdown(g);
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return err;
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}
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#endif
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int nvgpu_nvlink_remove(struct gk20a *g)
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{
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#ifdef CONFIG_TEGRA_NVLINK
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int err;
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if (!nvgpu_is_enabled(g, NVGPU_SUPPORT_NVLINK)) {
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return -ENODEV;
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}
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nvgpu_set_enabled(g, NVGPU_SUPPORT_NVLINK, false);
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err = nvgpu_nvlink_unregister_link(g);
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if (err != 0) {
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nvgpu_err(g, "failed on nvlink link unregistration");
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return err;
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}
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err = nvgpu_nvlink_unregister_device(g);
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if (err != 0) {
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nvgpu_err(g, "failed on nvlink device unregistration");
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return err;
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}
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nvgpu_kfree(g, g->nvlink.priv);
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return 0;
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#else
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return -ENODEV;
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#endif
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}
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