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// SPDX-License-Identifier: GPL-2.0
/* Marvell OcteonTx2 RVU Admin Function driver
*
* Copyright (C) 2019 Marvell International Ltd.
*
* 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.
*/
#ifdef CONFIG_DEBUG_FS
#include <linux/fs.h>
#include <linux/debugfs.h>
#include <linux/module.h>
#include <linux/pci.h>
#include "rvu_struct.h"
#include "rvu_reg.h"
#include "rvu.h"
#define DEBUGFS_DIR_NAME "octeontx2"
#define rvu_dbg_NULL NULL
#define RVU_DEBUG_FOPS(name, read_op, write_op) \
static const struct file_operations rvu_dbg_##name##_fops = { \
.owner = THIS_MODULE, \
.open = simple_open, \
.read = rvu_dbg_##read_op, \
.write = rvu_dbg_##write_op \
}
/* Dumps current provisioning status of all RVU block LFs */
static ssize_t rvu_dbg_rsrc_attach_status(struct file *filp,
char __user *buffer,
size_t count, loff_t *ppos)
{
int index, off = 0, flag = 0, go_back = 0, off_prev;
struct rvu *rvu = filp->private_data;
int lf, pf, vf, pcifunc;
struct rvu_block block;
int bytes_not_copied;
int buf_size = 2048;
char *buf;
/* don't allow partial reads */
if (*ppos != 0)
return 0;
buf = kzalloc(buf_size, GFP_KERNEL);
if (!buf)
return -ENOSPC;
off += scnprintf(&buf[off], buf_size - 1 - off, "\npcifunc\t\t");
for (index = 0; index < BLK_COUNT; index++)
if (strlen(rvu->hw->block[index].name))
off += scnprintf(&buf[off], buf_size - 1 - off,
"%*s\t", (index - 1) * 2,
rvu->hw->block[index].name);
off += scnprintf(&buf[off], buf_size - 1 - off, "\n");
for (pf = 0; pf < rvu->hw->total_pfs; pf++) {
for (vf = 0; vf <= rvu->hw->total_vfs; vf++) {
pcifunc = pf << 10 | vf;
if (!pcifunc)
continue;
if (vf) {
go_back = scnprintf(&buf[off],
buf_size - 1 - off,
"PF%d:VF%d\t\t", pf,
vf - 1);
} else {
go_back = scnprintf(&buf[off],
buf_size - 1 - off,
"PF%d\t\t", pf);
}
off += go_back;
for (index = 0; index < BLKTYPE_MAX; index++) {
block = rvu->hw->block[index];
if (!strlen(block.name))
continue;
off_prev = off;
for (lf = 0; lf < block.lf.max; lf++) {
if (block.fn_map[lf] != pcifunc)
continue;
flag = 1;
off += scnprintf(&buf[off], buf_size - 1
- off, "%3d,", lf);
}
if (flag && off_prev != off)
off--;
else
go_back++;
off += scnprintf(&buf[off], buf_size - 1 - off,
"\t");
}
if (!flag)
off -= go_back;
else
flag = 0;
off--;
off += scnprintf(&buf[off], buf_size - 1 - off, "\n");
}
}
bytes_not_copied = copy_to_user(buffer, buf, off);
kfree(buf);
if (bytes_not_copied)
return -EFAULT;
*ppos = off;
return off;
}
RVU_DEBUG_FOPS(rsrc_status, rsrc_attach_status, NULL);
void rvu_dbg_init(struct rvu *rvu)
{
struct device *dev = &rvu->pdev->dev;
struct dentry *pfile;
rvu->rvu_dbg.root = debugfs_create_dir(DEBUGFS_DIR_NAME, NULL);
if (!rvu->rvu_dbg.root) {
dev_err(rvu->dev, "%s failed\n", __func__);
return;
}
pfile = debugfs_create_file("rsrc_alloc", 0444, rvu->rvu_dbg.root, rvu,
&rvu_dbg_rsrc_status_fops);
if (!pfile)
goto create_failed;
return;
create_failed:
dev_err(dev, "Failed to create debugfs dir\n");
debugfs_remove_recursive(rvu->rvu_dbg.root);
}
void rvu_dbg_exit(struct rvu *rvu)
{
debugfs_remove_recursive(rvu->rvu_dbg.root);
}
#endif /* CONFIG_DEBUG_FS */
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