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/*
* Intel MIC Platform Software Stack (MPSS)
*
* Copyright(c) 2016 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 Virtio Over PCIe (VOP) driver.
*
*/
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include "vop_main.h"
static int vop_dp_show(struct seq_file *s, void *pos)
{
struct mic_device_desc *d;
struct mic_device_ctrl *dc;
struct mic_vqconfig *vqconfig;
__u32 *features;
__u8 *config;
struct vop_info *vi = s->private;
struct vop_device *vpdev = vi->vpdev;
struct mic_bootparam *bootparam = vpdev->hw_ops->get_dp(vpdev);
int j, k;
seq_printf(s, "Bootparam: magic 0x%x\n",
bootparam->magic);
seq_printf(s, "Bootparam: h2c_config_db %d\n",
bootparam->h2c_config_db);
seq_printf(s, "Bootparam: node_id %d\n",
bootparam->node_id);
seq_printf(s, "Bootparam: c2h_scif_db %d\n",
bootparam->c2h_scif_db);
seq_printf(s, "Bootparam: h2c_scif_db %d\n",
bootparam->h2c_scif_db);
seq_printf(s, "Bootparam: scif_host_dma_addr 0x%llx\n",
bootparam->scif_host_dma_addr);
seq_printf(s, "Bootparam: scif_card_dma_addr 0x%llx\n",
bootparam->scif_card_dma_addr);
for (j = sizeof(*bootparam);
j < MIC_DP_SIZE; j += mic_total_desc_size(d)) {
d = (void *)bootparam + j;
dc = (void *)d + mic_aligned_desc_size(d);
/* end of list */
if (d->type == 0)
break;
if (d->type == -1)
continue;
seq_printf(s, "Type %d ", d->type);
seq_printf(s, "Num VQ %d ", d->num_vq);
seq_printf(s, "Feature Len %d\n", d->feature_len);
seq_printf(s, "Config Len %d ", d->config_len);
seq_printf(s, "Shutdown Status %d\n", d->status);
for (k = 0; k < d->num_vq; k++) {
vqconfig = mic_vq_config(d) + k;
seq_printf(s, "vqconfig[%d]: ", k);
seq_printf(s, "address 0x%llx ",
vqconfig->address);
seq_printf(s, "num %d ", vqconfig->num);
seq_printf(s, "used address 0x%llx\n",
vqconfig->used_address);
}
features = (__u32 *)mic_vq_features(d);
seq_printf(s, "Features: Host 0x%x ", features[0]);
seq_printf(s, "Guest 0x%x\n", features[1]);
config = mic_vq_configspace(d);
for (k = 0; k < d->config_len; k++)
seq_printf(s, "config[%d]=%d\n", k, config[k]);
seq_puts(s, "Device control:\n");
seq_printf(s, "Config Change %d ", dc->config_change);
seq_printf(s, "Vdev reset %d\n", dc->vdev_reset);
seq_printf(s, "Guest Ack %d ", dc->guest_ack);
seq_printf(s, "Host ack %d\n", dc->host_ack);
seq_printf(s, "Used address updated %d ",
dc->used_address_updated);
seq_printf(s, "Vdev 0x%llx\n", dc->vdev);
seq_printf(s, "c2h doorbell %d ", dc->c2h_vdev_db);
seq_printf(s, "h2c doorbell %d\n", dc->h2c_vdev_db);
}
schedule_work(&vi->hotplug_work);
return 0;
}
static int vop_dp_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, vop_dp_show, inode->i_private);
}
static int vop_dp_debug_release(struct inode *inode, struct file *file)
{
return single_release(inode, file);
}
static const struct file_operations dp_ops = {
.owner = THIS_MODULE,
.open = vop_dp_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = vop_dp_debug_release
};
static int vop_vdev_info_show(struct seq_file *s, void *unused)
{
struct vop_info *vi = s->private;
struct list_head *pos, *tmp;
struct vop_vdev *vdev;
int i, j;
mutex_lock(&vi->vop_mutex);
list_for_each_safe(pos, tmp, &vi->vdev_list) {
vdev = list_entry(pos, struct vop_vdev, list);
seq_printf(s, "VDEV type %d state %s in %ld out %ld in_dma %ld out_dma %ld\n",
vdev->virtio_id,
vop_vdevup(vdev) ? "UP" : "DOWN",
vdev->in_bytes,
vdev->out_bytes,
vdev->in_bytes_dma,
vdev->out_bytes_dma);
for (i = 0; i < MIC_MAX_VRINGS; i++) {
struct vring_desc *desc;
struct vring_avail *avail;
struct vring_used *used;
struct vop_vringh *vvr = &vdev->vvr[i];
struct vringh *vrh = &vvr->vrh;
int num = vrh->vring.num;
if (!num)
continue;
desc = vrh->vring.desc;
seq_printf(s, "vring i %d avail_idx %d",
i, vvr->vring.info->avail_idx & (num - 1));
seq_printf(s, " vring i %d avail_idx %d\n",
i, vvr->vring.info->avail_idx);
seq_printf(s, "vrh i %d weak_barriers %d",
i, vrh->weak_barriers);
seq_printf(s, " last_avail_idx %d last_used_idx %d",
vrh->last_avail_idx, vrh->last_used_idx);
seq_printf(s, " completed %d\n", vrh->completed);
for (j = 0; j < num; j++) {
seq_printf(s, "desc[%d] addr 0x%llx len %d",
j, desc->addr, desc->len);
seq_printf(s, " flags 0x%x next %d\n",
desc->flags, desc->next);
desc++;
}
avail = vrh->vring.avail;
seq_printf(s, "avail flags 0x%x idx %d\n",
vringh16_to_cpu(vrh, avail->flags),
vringh16_to_cpu(vrh,
avail->idx) & (num - 1));
seq_printf(s, "avail flags 0x%x idx %d\n",
vringh16_to_cpu(vrh, avail->flags),
vringh16_to_cpu(vrh, avail->idx));
for (j = 0; j < num; j++)
seq_printf(s, "avail ring[%d] %d\n",
j, avail->ring[j]);
used = vrh->vring.used;
seq_printf(s, "used flags 0x%x idx %d\n",
vringh16_to_cpu(vrh, used->flags),
vringh16_to_cpu(vrh, used->idx) & (num - 1));
seq_printf(s, "used flags 0x%x idx %d\n",
vringh16_to_cpu(vrh, used->flags),
vringh16_to_cpu(vrh, used->idx));
for (j = 0; j < num; j++)
seq_printf(s, "used ring[%d] id %d len %d\n",
j, vringh32_to_cpu(vrh,
used->ring[j].id),
vringh32_to_cpu(vrh,
used->ring[j].len));
}
}
mutex_unlock(&vi->vop_mutex);
return 0;
}
static int vop_vdev_info_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, vop_vdev_info_show, inode->i_private);
}
static int vop_vdev_info_debug_release(struct inode *inode, struct file *file)
{
return single_release(inode, file);
}
static const struct file_operations vdev_info_ops = {
.owner = THIS_MODULE,
.open = vop_vdev_info_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = vop_vdev_info_debug_release
};
void vop_init_debugfs(struct vop_info *vi)
{
char name[16];
snprintf(name, sizeof(name), "%s%d", KBUILD_MODNAME, vi->vpdev->dnode);
vi->dbg = debugfs_create_dir(name, NULL);
if (!vi->dbg) {
pr_err("can't create debugfs dir vop\n");
return;
}
debugfs_create_file("dp", 0444, vi->dbg, vi, &dp_ops);
debugfs_create_file("vdev_info", 0444, vi->dbg, vi, &vdev_info_ops);
}
void vop_exit_debugfs(struct vop_info *vi)
{
debugfs_remove_recursive(vi->dbg);
}
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