forked from Minki/linux
e2f9d739b2
debugfs_remove_recursive will do NULL check, so remove the redundant null check. Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Link: https://lore.kernel.org/r/1578391235-603-1-git-send-email-vulab@iscas.ac.cn Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
150 lines
3.4 KiB
C
150 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Intel MIC Platform Software Stack (MPSS)
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*
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* Copyright(c) 2013 Intel Corporation.
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*
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* Intel MIC Host driver.
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*/
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#include <linux/debugfs.h>
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#include <linux/pci.h>
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#include <linux/seq_file.h>
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#include <linux/mic_common.h>
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#include "../common/mic_dev.h"
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#include "mic_device.h"
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#include "mic_smpt.h"
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/* Debugfs parent dir */
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static struct dentry *mic_dbg;
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static int mic_smpt_show(struct seq_file *s, void *pos)
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{
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int i;
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struct mic_device *mdev = s->private;
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unsigned long flags;
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seq_printf(s, "MIC %-2d |%-10s| %-14s %-10s\n",
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mdev->id, "SMPT entry", "SW DMA addr", "RefCount");
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seq_puts(s, "====================================================\n");
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if (mdev->smpt) {
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struct mic_smpt_info *smpt_info = mdev->smpt;
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spin_lock_irqsave(&smpt_info->smpt_lock, flags);
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for (i = 0; i < smpt_info->info.num_reg; i++) {
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seq_printf(s, "%9s|%-10d| %-#14llx %-10lld\n",
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" ", i, smpt_info->entry[i].dma_addr,
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smpt_info->entry[i].ref_count);
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}
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spin_unlock_irqrestore(&smpt_info->smpt_lock, flags);
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}
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seq_puts(s, "====================================================\n");
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(mic_smpt);
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static int mic_post_code_show(struct seq_file *s, void *pos)
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{
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struct mic_device *mdev = s->private;
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u32 reg = mdev->ops->get_postcode(mdev);
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seq_printf(s, "%c%c", reg & 0xff, (reg >> 8) & 0xff);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(mic_post_code);
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static int mic_msi_irq_info_show(struct seq_file *s, void *pos)
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{
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struct mic_device *mdev = s->private;
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int reg;
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int i, j;
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u16 entry;
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u16 vector;
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struct pci_dev *pdev = mdev->pdev;
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if (pci_dev_msi_enabled(pdev)) {
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for (i = 0; i < mdev->irq_info.num_vectors; i++) {
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if (pdev->msix_enabled) {
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entry = mdev->irq_info.msix_entries[i].entry;
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vector = mdev->irq_info.msix_entries[i].vector;
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} else {
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entry = 0;
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vector = pdev->irq;
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}
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reg = mdev->intr_ops->read_msi_to_src_map(mdev, entry);
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seq_printf(s, "%s %-10d %s %-10d MXAR[%d]: %08X\n",
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"IRQ:", vector, "Entry:", entry, i, reg);
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seq_printf(s, "%-10s", "offset:");
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for (j = (MIC_NUM_OFFSETS - 1); j >= 0; j--)
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seq_printf(s, "%4d ", j);
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seq_puts(s, "\n");
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seq_printf(s, "%-10s", "count:");
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for (j = (MIC_NUM_OFFSETS - 1); j >= 0; j--)
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seq_printf(s, "%4d ",
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(mdev->irq_info.mic_msi_map[i] &
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BIT(j)) ? 1 : 0);
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seq_puts(s, "\n\n");
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}
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} else {
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seq_puts(s, "MSI/MSIx interrupts not enabled\n");
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(mic_msi_irq_info);
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/**
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* mic_create_debug_dir - Initialize MIC debugfs entries.
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*/
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void mic_create_debug_dir(struct mic_device *mdev)
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{
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char name[16];
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if (!mic_dbg)
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return;
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scnprintf(name, sizeof(name), "mic%d", mdev->id);
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mdev->dbg_dir = debugfs_create_dir(name, mic_dbg);
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debugfs_create_file("smpt", 0444, mdev->dbg_dir, mdev,
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&mic_smpt_fops);
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debugfs_create_file("post_code", 0444, mdev->dbg_dir, mdev,
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&mic_post_code_fops);
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debugfs_create_file("msi_irq_info", 0444, mdev->dbg_dir, mdev,
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&mic_msi_irq_info_fops);
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}
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/**
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* mic_delete_debug_dir - Uninitialize MIC debugfs entries.
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*/
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void mic_delete_debug_dir(struct mic_device *mdev)
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{
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debugfs_remove_recursive(mdev->dbg_dir);
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}
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/**
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* mic_init_debugfs - Initialize global debugfs entry.
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*/
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void __init mic_init_debugfs(void)
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{
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mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
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}
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/**
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* mic_exit_debugfs - Uninitialize global debugfs entry
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*/
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void mic_exit_debugfs(void)
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{
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debugfs_remove(mic_dbg);
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}
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