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/*
* 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;
}
static int mic_smpt_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, mic_smpt_show, inode->i_private);
}
static int mic_smpt_debug_release(struct inode *inode, struct file *file)
{
return single_release(inode, file);
}
static const struct file_operations smpt_file_ops = {
.owner = THIS_MODULE,
.open = mic_smpt_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = mic_smpt_debug_release
};
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;
}
static int mic_post_code_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, mic_post_code_show, inode->i_private);
}
static int mic_post_code_debug_release(struct inode *inode, struct file *file)
{
return single_release(inode, file);
}
static const struct file_operations post_code_ops = {
.owner = THIS_MODULE,
.open = mic_post_code_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = mic_post_code_debug_release
};
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;
}
static int mic_msi_irq_info_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, mic_msi_irq_info_show, inode->i_private);
}
static int
mic_msi_irq_info_debug_release(struct inode *inode, struct file *file)
{
return single_release(inode, file);
}
static const struct file_operations msi_irq_info_ops = {
.owner = THIS_MODULE,
.open = mic_msi_irq_info_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = mic_msi_irq_info_debug_release
};
/**
* 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);
if (!mdev->dbg_dir)
return;
debugfs_create_file("smpt", 0444, mdev->dbg_dir, mdev, &smpt_file_ops);
debugfs_create_file("post_code", 0444, mdev->dbg_dir, mdev,
&post_code_ops);
debugfs_create_file("msi_irq_info", 0444, mdev->dbg_dir, mdev,
&msi_irq_info_ops);
}
/**
* 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);
if (!mic_dbg)
pr_err("can't create debugfs dir\n");
}
/**
* mic_exit_debugfs - Uninitialize global debugfs entry
*/
void mic_exit_debugfs(void)
{
debugfs_remove(mic_dbg);
}
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