mirror of
https://github.com/Fishwaldo/Star64_linux.git
synced 2025-05-30 11:08:30 +00:00
7e9f02a789
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Ashutosh Dixit <ashutosh.dixit@intel.com> Cc: linux-kernel@vger.kernel.org Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
164 lines
4 KiB
C
164 lines
4 KiB
C
/*
|
|
* Intel MIC Platform Software Stack (MPSS)
|
|
*
|
|
* Copyright(c) 2013 Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License, version 2, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* The full GNU General Public License is included in this distribution in
|
|
* the file called "COPYING".
|
|
*
|
|
* Intel MIC Host driver.
|
|
*
|
|
*/
|
|
#include <linux/debugfs.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
#include <linux/mic_common.h>
|
|
#include "../common/mic_dev.h"
|
|
#include "mic_device.h"
|
|
#include "mic_smpt.h"
|
|
|
|
/* Debugfs parent dir */
|
|
static struct dentry *mic_dbg;
|
|
|
|
static int mic_smpt_show(struct seq_file *s, void *pos)
|
|
{
|
|
int i;
|
|
struct mic_device *mdev = s->private;
|
|
unsigned long flags;
|
|
|
|
seq_printf(s, "MIC %-2d |%-10s| %-14s %-10s\n",
|
|
mdev->id, "SMPT entry", "SW DMA addr", "RefCount");
|
|
seq_puts(s, "====================================================\n");
|
|
|
|
if (mdev->smpt) {
|
|
struct mic_smpt_info *smpt_info = mdev->smpt;
|
|
spin_lock_irqsave(&smpt_info->smpt_lock, flags);
|
|
for (i = 0; i < smpt_info->info.num_reg; i++) {
|
|
seq_printf(s, "%9s|%-10d| %-#14llx %-10lld\n",
|
|
" ", i, smpt_info->entry[i].dma_addr,
|
|
smpt_info->entry[i].ref_count);
|
|
}
|
|
spin_unlock_irqrestore(&smpt_info->smpt_lock, flags);
|
|
}
|
|
seq_puts(s, "====================================================\n");
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SHOW_ATTRIBUTE(mic_smpt);
|
|
|
|
static int mic_post_code_show(struct seq_file *s, void *pos)
|
|
{
|
|
struct mic_device *mdev = s->private;
|
|
u32 reg = mdev->ops->get_postcode(mdev);
|
|
|
|
seq_printf(s, "%c%c", reg & 0xff, (reg >> 8) & 0xff);
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SHOW_ATTRIBUTE(mic_post_code);
|
|
|
|
static int mic_msi_irq_info_show(struct seq_file *s, void *pos)
|
|
{
|
|
struct mic_device *mdev = s->private;
|
|
int reg;
|
|
int i, j;
|
|
u16 entry;
|
|
u16 vector;
|
|
struct pci_dev *pdev = mdev->pdev;
|
|
|
|
if (pci_dev_msi_enabled(pdev)) {
|
|
for (i = 0; i < mdev->irq_info.num_vectors; i++) {
|
|
if (pdev->msix_enabled) {
|
|
entry = mdev->irq_info.msix_entries[i].entry;
|
|
vector = mdev->irq_info.msix_entries[i].vector;
|
|
} else {
|
|
entry = 0;
|
|
vector = pdev->irq;
|
|
}
|
|
|
|
reg = mdev->intr_ops->read_msi_to_src_map(mdev, entry);
|
|
|
|
seq_printf(s, "%s %-10d %s %-10d MXAR[%d]: %08X\n",
|
|
"IRQ:", vector, "Entry:", entry, i, reg);
|
|
|
|
seq_printf(s, "%-10s", "offset:");
|
|
for (j = (MIC_NUM_OFFSETS - 1); j >= 0; j--)
|
|
seq_printf(s, "%4d ", j);
|
|
seq_puts(s, "\n");
|
|
|
|
|
|
seq_printf(s, "%-10s", "count:");
|
|
for (j = (MIC_NUM_OFFSETS - 1); j >= 0; j--)
|
|
seq_printf(s, "%4d ",
|
|
(mdev->irq_info.mic_msi_map[i] &
|
|
BIT(j)) ? 1 : 0);
|
|
seq_puts(s, "\n\n");
|
|
}
|
|
} else {
|
|
seq_puts(s, "MSI/MSIx interrupts not enabled\n");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SHOW_ATTRIBUTE(mic_msi_irq_info);
|
|
|
|
/**
|
|
* mic_create_debug_dir - Initialize MIC debugfs entries.
|
|
*/
|
|
void mic_create_debug_dir(struct mic_device *mdev)
|
|
{
|
|
char name[16];
|
|
|
|
if (!mic_dbg)
|
|
return;
|
|
|
|
scnprintf(name, sizeof(name), "mic%d", mdev->id);
|
|
mdev->dbg_dir = debugfs_create_dir(name, mic_dbg);
|
|
|
|
debugfs_create_file("smpt", 0444, mdev->dbg_dir, mdev,
|
|
&mic_smpt_fops);
|
|
|
|
debugfs_create_file("post_code", 0444, mdev->dbg_dir, mdev,
|
|
&mic_post_code_fops);
|
|
|
|
debugfs_create_file("msi_irq_info", 0444, mdev->dbg_dir, mdev,
|
|
&mic_msi_irq_info_fops);
|
|
}
|
|
|
|
/**
|
|
* mic_delete_debug_dir - Uninitialize MIC debugfs entries.
|
|
*/
|
|
void mic_delete_debug_dir(struct mic_device *mdev)
|
|
{
|
|
if (!mdev->dbg_dir)
|
|
return;
|
|
|
|
debugfs_remove_recursive(mdev->dbg_dir);
|
|
}
|
|
|
|
/**
|
|
* mic_init_debugfs - Initialize global debugfs entry.
|
|
*/
|
|
void __init mic_init_debugfs(void)
|
|
{
|
|
mic_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
|
|
}
|
|
|
|
/**
|
|
* mic_exit_debugfs - Uninitialize global debugfs entry
|
|
*/
|
|
void mic_exit_debugfs(void)
|
|
{
|
|
debugfs_remove(mic_dbg);
|
|
}
|