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2aaf7f4586
VBIOS version is only available if dGPU has already been powered on. Make sure dGPU is powered-on before accessing VBIOS version information. Bug 200528528 Change-Id: I80915d61245a622f7d5273c5fbddb03cc22885e2 Signed-off-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2150447 Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Vinod Gopalakrishnakurup <vinodg@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/*
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* Copyright (C) 2018-2019 NVIDIA Corporation. All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <nvgpu/types.h>
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#include "debug_bios.h"
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#include "os_linux.h"
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#include <linux/debugfs.h>
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#include <linux/uaccess.h>
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static int bios_version_show(struct seq_file *s, void *unused)
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{
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struct gk20a *g = s->private;
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int err;
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err = gk20a_busy(g);
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if (err != 0) {
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return err;
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}
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seq_printf(s, "Version %02X.%02X.%02X.%02X.%02X\n",
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(g->bios->vbios_version >> 24) & 0xFF,
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(g->bios->vbios_version >> 16) & 0xFF,
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(g->bios->vbios_version >> 8) & 0xFF,
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(g->bios->vbios_version >> 0) & 0xFF,
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(g->bios->vbios_oem_version) & 0xFF);
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gk20a_idle(g);
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return 0;
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}
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static int bios_version_open(struct inode *inode, struct file *file)
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{
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return single_open(file, bios_version_show, inode->i_private);
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}
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static const struct file_operations bios_version_fops = {
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.open = bios_version_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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int nvgpu_bios_debugfs_init(struct gk20a *g)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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struct dentry *gpu_root = l->debugfs;
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debugfs_create_file("bios", S_IRUGO,
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gpu_root, g,
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&bios_version_fops);
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return 0;
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}
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