From 2a25d03f2b7ad0700f14640282abd72ff587d800 Mon Sep 17 00:00:00 2001 From: Kyle Guo Date: Thu, 12 Jul 2018 17:51:42 -0700 Subject: gpu: nvgpu: vgpu: ecc sysfs support for vgpu - fetch ecc info from RM server and create sysfs nodes - new file ecc_vgpu.c for platform-independent code - add 2 new commands: GET_ECC_INFO and GET_ECC_COUNTER_VALUE JIRA EVLR-2590 Change-Id: I040a9fcd23326e432ca93e9a028319f9c1c570f0 Signed-off-by: Kyle Guo Reviewed-on: https://git-master.nvidia.com/r/1777428 Reviewed-by: mobile promotions Tested-by: mobile promotions --- drivers/gpu/nvgpu/vgpu/ecc_vgpu.c | 92 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 drivers/gpu/nvgpu/vgpu/ecc_vgpu.c (limited to 'drivers/gpu/nvgpu/vgpu/ecc_vgpu.c') diff --git a/drivers/gpu/nvgpu/vgpu/ecc_vgpu.c b/drivers/gpu/nvgpu/vgpu/ecc_vgpu.c new file mode 100644 index 00000000..fa44e58f --- /dev/null +++ b/drivers/gpu/nvgpu/vgpu/ecc_vgpu.c @@ -0,0 +1,92 @@ +/* + * Copyright (c) 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 +#include +#include +#include + +#include "vgpu/ecc_vgpu.h" + +int vgpu_ecc_get_info(struct gk20a *g) +{ + struct vgpu_priv_data *priv = vgpu_get_priv_data(g); + struct tegra_vgpu_cmd_msg msg = {0}; + struct tegra_vgpu_ecc_info_params *p = &msg.params.ecc_info; + struct tegra_vgpu_ecc_info_entry *entry; + struct vgpu_ecc_stat *stats; + void *handle; + int err, i, count; + size_t oob_size; + + msg.cmd = TEGRA_VGPU_CMD_GET_ECC_INFO; + msg.handle = vgpu_get_handle(g); + err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg)); + err = err ? err : msg.ret; + if (unlikely(err)) { + nvgpu_err(g, "vgpu get_ecc_info failed, err=%d", err); + return err; + } + + count = p->ecc_stats_count; + + handle = vgpu_ivc_oob_get_ptr(vgpu_ivc_get_server_vmid(), + TEGRA_VGPU_QUEUE_CMD, + (void **)&entry, &oob_size); + if (unlikely(!handle)) + return -EINVAL; + + if (unlikely(oob_size < count * sizeof(*entry))) { + err = -E2BIG; + goto out; + } + + stats = nvgpu_kzalloc(g, count * sizeof(*stats)); + if (unlikely(!stats)) { + err = -ENOMEM; + goto out; + } + + for (i = 0; i < count; i++) { + stats[i].ecc_id = entry[i].ecc_id; + strncpy(stats[i].name, entry[i].name, + NVGPU_ECC_STAT_NAME_MAX_SIZE); + } + + priv->ecc_stats = stats; + priv->ecc_stats_count = count; +out: + vgpu_ivc_oob_put_ptr(handle); + return err; +} + +void vgpu_ecc_remove_info(struct gk20a *g) +{ + struct vgpu_priv_data *priv = vgpu_get_priv_data(g); + + priv->ecc_stats_count = 0; + + if (priv->ecc_stats) { + nvgpu_kfree(g, priv->ecc_stats); + priv->ecc_stats = NULL; + } +} -- cgit v1.2.2