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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2021 Intel Corporation. All rights rsvd. */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/highmem.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/smp.h>
#include <uapi/linux/idxd.h>
#include <linux/idxd.h>
#include <linux/dmaengine.h>
#include "../../dma/idxd/idxd.h"
#include <linux/debugfs.h>
#include <crypto/internal/acompress.h>
#include "iaa_crypto.h"
#include "iaa_crypto_stats.h"
static u64 total_comp_calls;
static u64 total_decomp_calls;
static u64 total_sw_decomp_calls;
static u64 max_comp_delay_ns;
static u64 max_decomp_delay_ns;
static u64 max_acomp_delay_ns;
static u64 max_adecomp_delay_ns;
static u64 total_comp_bytes_out;
static u64 total_decomp_bytes_in;
static u64 total_completion_einval_errors;
static u64 total_completion_timeout_errors;
static u64 total_completion_comp_buf_overflow_errors;
static struct dentry *iaa_crypto_debugfs_root;
void update_total_comp_calls(void)
{
total_comp_calls++;
}
void update_total_comp_bytes_out(int n)
{
total_comp_bytes_out += n;
}
void update_total_decomp_calls(void)
{
total_decomp_calls++;
}
void update_total_sw_decomp_calls(void)
{
total_sw_decomp_calls++;
}
void update_total_decomp_bytes_in(int n)
{
total_decomp_bytes_in += n;
}
void update_completion_einval_errs(void)
{
total_completion_einval_errors++;
}
void update_completion_timeout_errs(void)
{
total_completion_timeout_errors++;
}
void update_completion_comp_buf_overflow_errs(void)
{
total_completion_comp_buf_overflow_errors++;
}
void update_max_comp_delay_ns(u64 start_time_ns)
{
u64 time_diff;
time_diff = ktime_get_ns() - start_time_ns;
if (time_diff > max_comp_delay_ns)
max_comp_delay_ns = time_diff;
}
void update_max_decomp_delay_ns(u64 start_time_ns)
{
u64 time_diff;
time_diff = ktime_get_ns() - start_time_ns;
if (time_diff > max_decomp_delay_ns)
max_decomp_delay_ns = time_diff;
}
void update_max_acomp_delay_ns(u64 start_time_ns)
{
u64 time_diff;
time_diff = ktime_get_ns() - start_time_ns;
if (time_diff > max_acomp_delay_ns)
max_acomp_delay_ns = time_diff;
}
void update_max_adecomp_delay_ns(u64 start_time_ns)
{
u64 time_diff;
time_diff = ktime_get_ns() - start_time_ns;
if (time_diff > max_adecomp_delay_ns)
max_adecomp_delay_ns = time_diff;
}
void update_wq_comp_calls(struct idxd_wq *idxd_wq)
{
struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
wq->comp_calls++;
wq->iaa_device->comp_calls++;
}
void update_wq_comp_bytes(struct idxd_wq *idxd_wq, int n)
{
struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
wq->comp_bytes += n;
wq->iaa_device->comp_bytes += n;
}
void update_wq_decomp_calls(struct idxd_wq *idxd_wq)
{
struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
wq->decomp_calls++;
wq->iaa_device->decomp_calls++;
}
void update_wq_decomp_bytes(struct idxd_wq *idxd_wq, int n)
{
struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
wq->decomp_bytes += n;
wq->iaa_device->decomp_bytes += n;
}
static void reset_iaa_crypto_stats(void)
{
total_comp_calls = 0;
total_decomp_calls = 0;
total_sw_decomp_calls = 0;
max_comp_delay_ns = 0;
max_decomp_delay_ns = 0;
max_acomp_delay_ns = 0;
max_adecomp_delay_ns = 0;
total_comp_bytes_out = 0;
total_decomp_bytes_in = 0;
total_completion_einval_errors = 0;
total_completion_timeout_errors = 0;
total_completion_comp_buf_overflow_errors = 0;
}
static void reset_wq_stats(struct iaa_wq *wq)
{
wq->comp_calls = 0;
wq->comp_bytes = 0;
wq->decomp_calls = 0;
wq->decomp_bytes = 0;
}
static void reset_device_stats(struct iaa_device *iaa_device)
{
struct iaa_wq *iaa_wq;
iaa_device->comp_calls = 0;
iaa_device->comp_bytes = 0;
iaa_device->decomp_calls = 0;
iaa_device->decomp_bytes = 0;
list_for_each_entry(iaa_wq, &iaa_device->wqs, list)
reset_wq_stats(iaa_wq);
}
static void wq_show(struct seq_file *m, struct iaa_wq *iaa_wq)
{
seq_printf(m, " name: %s\n", iaa_wq->wq->name);
seq_printf(m, " comp_calls: %llu\n", iaa_wq->comp_calls);
seq_printf(m, " comp_bytes: %llu\n", iaa_wq->comp_bytes);
seq_printf(m, " decomp_calls: %llu\n", iaa_wq->decomp_calls);
seq_printf(m, " decomp_bytes: %llu\n\n", iaa_wq->decomp_bytes);
}
static void device_stats_show(struct seq_file *m, struct iaa_device *iaa_device)
{
struct iaa_wq *iaa_wq;
seq_puts(m, "iaa device:\n");
seq_printf(m, " id: %d\n", iaa_device->idxd->id);
seq_printf(m, " n_wqs: %d\n", iaa_device->n_wq);
seq_printf(m, " comp_calls: %llu\n", iaa_device->comp_calls);
seq_printf(m, " comp_bytes: %llu\n", iaa_device->comp_bytes);
seq_printf(m, " decomp_calls: %llu\n", iaa_device->decomp_calls);
seq_printf(m, " decomp_bytes: %llu\n", iaa_device->decomp_bytes);
seq_puts(m, " wqs:\n");
list_for_each_entry(iaa_wq, &iaa_device->wqs, list)
wq_show(m, iaa_wq);
}
static void global_stats_show(struct seq_file *m)
{
seq_puts(m, "global stats:\n");
seq_printf(m, " total_comp_calls: %llu\n", total_comp_calls);
seq_printf(m, " total_decomp_calls: %llu\n", total_decomp_calls);
seq_printf(m, " total_sw_decomp_calls: %llu\n", total_sw_decomp_calls);
seq_printf(m, " total_comp_bytes_out: %llu\n", total_comp_bytes_out);
seq_printf(m, " total_decomp_bytes_in: %llu\n", total_decomp_bytes_in);
seq_printf(m, " total_completion_einval_errors: %llu\n",
total_completion_einval_errors);
seq_printf(m, " total_completion_timeout_errors: %llu\n",
total_completion_timeout_errors);
seq_printf(m, " total_completion_comp_buf_overflow_errors: %llu\n\n",
total_completion_comp_buf_overflow_errors);
}
static int wq_stats_show(struct seq_file *m, void *v)
{
struct iaa_device *iaa_device;
mutex_lock(&iaa_devices_lock);
global_stats_show(m);
list_for_each_entry(iaa_device, &iaa_devices, list)
device_stats_show(m, iaa_device);
mutex_unlock(&iaa_devices_lock);
return 0;
}
static int iaa_crypto_stats_reset(void *data, u64 value)
{
struct iaa_device *iaa_device;
reset_iaa_crypto_stats();
mutex_lock(&iaa_devices_lock);
list_for_each_entry(iaa_device, &iaa_devices, list)
reset_device_stats(iaa_device);
mutex_unlock(&iaa_devices_lock);
return 0;
}
static int wq_stats_open(struct inode *inode, struct file *file)
{
return single_open(file, wq_stats_show, file);
}
static const struct file_operations wq_stats_fops = {
.open = wq_stats_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
DEFINE_DEBUGFS_ATTRIBUTE(wq_stats_reset_fops, NULL, iaa_crypto_stats_reset, "%llu\n");
int __init iaa_crypto_debugfs_init(void)
{
if (!debugfs_initialized())
return -ENODEV;
iaa_crypto_debugfs_root = debugfs_create_dir("iaa_crypto", NULL);
if (!iaa_crypto_debugfs_root)
return -ENOMEM;
debugfs_create_u64("max_comp_delay_ns", 0644,
iaa_crypto_debugfs_root, &max_comp_delay_ns);
debugfs_create_u64("max_decomp_delay_ns", 0644,
iaa_crypto_debugfs_root, &max_decomp_delay_ns);
debugfs_create_u64("max_acomp_delay_ns", 0644,
iaa_crypto_debugfs_root, &max_comp_delay_ns);
debugfs_create_u64("max_adecomp_delay_ns", 0644,
iaa_crypto_debugfs_root, &max_decomp_delay_ns);
debugfs_create_u64("total_comp_calls", 0644,
iaa_crypto_debugfs_root, &total_comp_calls);
debugfs_create_u64("total_decomp_calls", 0644,
iaa_crypto_debugfs_root, &total_decomp_calls);
debugfs_create_u64("total_sw_decomp_calls", 0644,
iaa_crypto_debugfs_root, &total_sw_decomp_calls);
debugfs_create_u64("total_comp_bytes_out", 0644,
iaa_crypto_debugfs_root, &total_comp_bytes_out);
debugfs_create_u64("total_decomp_bytes_in", 0644,
iaa_crypto_debugfs_root, &total_decomp_bytes_in);
debugfs_create_file("wq_stats", 0644, iaa_crypto_debugfs_root, NULL,
&wq_stats_fops);
debugfs_create_file("stats_reset", 0644, iaa_crypto_debugfs_root, NULL,
&wq_stats_reset_fops);
return 0;
}
void __exit iaa_crypto_debugfs_cleanup(void)
{
debugfs_remove_recursive(iaa_crypto_debugfs_root);
}
MODULE_LICENSE("GPL");
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