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// SPDX-License-Identifier: GPL-2.0-only
/* Copyright(c) 2023 Advanced Micro Devices, Inc */
#include <linux/pci.h>
#include <linux/vdpa.h>
#include <linux/pds/pds_common.h>
#include <linux/pds/pds_core_if.h>
#include <linux/pds/pds_adminq.h>
#include <linux/pds/pds_auxbus.h>
#include "aux_drv.h"
#include "vdpa_dev.h"
#include "debugfs.h"
static struct dentry *dbfs_dir;
void pds_vdpa_debugfs_create(void)
{
dbfs_dir = debugfs_create_dir(PDS_VDPA_DRV_NAME, NULL);
}
void pds_vdpa_debugfs_destroy(void)
{
debugfs_remove_recursive(dbfs_dir);
dbfs_dir = NULL;
}
#define PRINT_SBIT_NAME(__seq, __f, __name) \
do { \
if ((__f) & (__name)) \
seq_printf(__seq, " %s", &#__name[16]); \
} while (0)
static void print_status_bits(struct seq_file *seq, u8 status)
{
seq_puts(seq, "status:");
PRINT_SBIT_NAME(seq, status, VIRTIO_CONFIG_S_ACKNOWLEDGE);
PRINT_SBIT_NAME(seq, status, VIRTIO_CONFIG_S_DRIVER);
PRINT_SBIT_NAME(seq, status, VIRTIO_CONFIG_S_DRIVER_OK);
PRINT_SBIT_NAME(seq, status, VIRTIO_CONFIG_S_FEATURES_OK);
PRINT_SBIT_NAME(seq, status, VIRTIO_CONFIG_S_NEEDS_RESET);
PRINT_SBIT_NAME(seq, status, VIRTIO_CONFIG_S_FAILED);
seq_puts(seq, "\n");
}
static void print_feature_bits_all(struct seq_file *seq, u64 features)
{
int i;
seq_puts(seq, "features:");
for (i = 0; i < (sizeof(u64) * 8); i++) {
u64 mask = BIT_ULL(i);
switch (features & mask) {
case BIT_ULL(VIRTIO_NET_F_CSUM):
seq_puts(seq, " VIRTIO_NET_F_CSUM");
break;
case BIT_ULL(VIRTIO_NET_F_GUEST_CSUM):
seq_puts(seq, " VIRTIO_NET_F_GUEST_CSUM");
break;
case BIT_ULL(VIRTIO_NET_F_CTRL_GUEST_OFFLOADS):
seq_puts(seq, " VIRTIO_NET_F_CTRL_GUEST_OFFLOADS");
break;
case BIT_ULL(VIRTIO_NET_F_MTU):
seq_puts(seq, " VIRTIO_NET_F_MTU");
break;
case BIT_ULL(VIRTIO_NET_F_MAC):
seq_puts(seq, " VIRTIO_NET_F_MAC");
break;
case BIT_ULL(VIRTIO_NET_F_GUEST_TSO4):
seq_puts(seq, " VIRTIO_NET_F_GUEST_TSO4");
break;
case BIT_ULL(VIRTIO_NET_F_GUEST_TSO6):
seq_puts(seq, " VIRTIO_NET_F_GUEST_TSO6");
break;
case BIT_ULL(VIRTIO_NET_F_GUEST_ECN):
seq_puts(seq, " VIRTIO_NET_F_GUEST_ECN");
break;
case BIT_ULL(VIRTIO_NET_F_GUEST_UFO):
seq_puts(seq, " VIRTIO_NET_F_GUEST_UFO");
break;
case BIT_ULL(VIRTIO_NET_F_HOST_TSO4):
seq_puts(seq, " VIRTIO_NET_F_HOST_TSO4");
break;
case BIT_ULL(VIRTIO_NET_F_HOST_TSO6):
seq_puts(seq, " VIRTIO_NET_F_HOST_TSO6");
break;
case BIT_ULL(VIRTIO_NET_F_HOST_ECN):
seq_puts(seq, " VIRTIO_NET_F_HOST_ECN");
break;
case BIT_ULL(VIRTIO_NET_F_HOST_UFO):
seq_puts(seq, " VIRTIO_NET_F_HOST_UFO");
break;
case BIT_ULL(VIRTIO_NET_F_MRG_RXBUF):
seq_puts(seq, " VIRTIO_NET_F_MRG_RXBUF");
break;
case BIT_ULL(VIRTIO_NET_F_STATUS):
seq_puts(seq, " VIRTIO_NET_F_STATUS");
break;
case BIT_ULL(VIRTIO_NET_F_CTRL_VQ):
seq_puts(seq, " VIRTIO_NET_F_CTRL_VQ");
break;
case BIT_ULL(VIRTIO_NET_F_CTRL_RX):
seq_puts(seq, " VIRTIO_NET_F_CTRL_RX");
break;
case BIT_ULL(VIRTIO_NET_F_CTRL_VLAN):
seq_puts(seq, " VIRTIO_NET_F_CTRL_VLAN");
break;
case BIT_ULL(VIRTIO_NET_F_CTRL_RX_EXTRA):
seq_puts(seq, " VIRTIO_NET_F_CTRL_RX_EXTRA");
break;
case BIT_ULL(VIRTIO_NET_F_GUEST_ANNOUNCE):
seq_puts(seq, " VIRTIO_NET_F_GUEST_ANNOUNCE");
break;
case BIT_ULL(VIRTIO_NET_F_MQ):
seq_puts(seq, " VIRTIO_NET_F_MQ");
break;
case BIT_ULL(VIRTIO_NET_F_CTRL_MAC_ADDR):
seq_puts(seq, " VIRTIO_NET_F_CTRL_MAC_ADDR");
break;
case BIT_ULL(VIRTIO_NET_F_HASH_REPORT):
seq_puts(seq, " VIRTIO_NET_F_HASH_REPORT");
break;
case BIT_ULL(VIRTIO_NET_F_RSS):
seq_puts(seq, " VIRTIO_NET_F_RSS");
break;
case BIT_ULL(VIRTIO_NET_F_RSC_EXT):
seq_puts(seq, " VIRTIO_NET_F_RSC_EXT");
break;
case BIT_ULL(VIRTIO_NET_F_STANDBY):
seq_puts(seq, " VIRTIO_NET_F_STANDBY");
break;
case BIT_ULL(VIRTIO_NET_F_SPEED_DUPLEX):
seq_puts(seq, " VIRTIO_NET_F_SPEED_DUPLEX");
break;
case BIT_ULL(VIRTIO_F_NOTIFY_ON_EMPTY):
seq_puts(seq, " VIRTIO_F_NOTIFY_ON_EMPTY");
break;
case BIT_ULL(VIRTIO_F_ANY_LAYOUT):
seq_puts(seq, " VIRTIO_F_ANY_LAYOUT");
break;
case BIT_ULL(VIRTIO_F_VERSION_1):
seq_puts(seq, " VIRTIO_F_VERSION_1");
break;
case BIT_ULL(VIRTIO_F_ACCESS_PLATFORM):
seq_puts(seq, " VIRTIO_F_ACCESS_PLATFORM");
break;
case BIT_ULL(VIRTIO_F_RING_PACKED):
seq_puts(seq, " VIRTIO_F_RING_PACKED");
break;
case BIT_ULL(VIRTIO_F_ORDER_PLATFORM):
seq_puts(seq, " VIRTIO_F_ORDER_PLATFORM");
break;
case BIT_ULL(VIRTIO_F_SR_IOV):
seq_puts(seq, " VIRTIO_F_SR_IOV");
break;
case 0:
break;
default:
seq_printf(seq, " bit_%d", i);
break;
}
}
seq_puts(seq, "\n");
}
void pds_vdpa_debugfs_add_pcidev(struct pds_vdpa_aux *vdpa_aux)
{
vdpa_aux->dentry = debugfs_create_dir(pci_name(vdpa_aux->padev->vf_pdev), dbfs_dir);
}
static int identity_show(struct seq_file *seq, void *v)
{
struct pds_vdpa_aux *vdpa_aux = seq->private;
struct vdpa_mgmt_dev *mgmt;
u64 hw_features;
seq_printf(seq, "aux_dev: %s\n",
dev_name(&vdpa_aux->padev->aux_dev.dev));
mgmt = &vdpa_aux->vdpa_mdev;
seq_printf(seq, "max_vqs: %d\n", mgmt->max_supported_vqs);
seq_printf(seq, "config_attr_mask: %#llx\n", mgmt->config_attr_mask);
hw_features = le64_to_cpu(vdpa_aux->ident.hw_features);
seq_printf(seq, "hw_features: %#llx\n", hw_features);
print_feature_bits_all(seq, hw_features);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(identity);
void pds_vdpa_debugfs_add_ident(struct pds_vdpa_aux *vdpa_aux)
{
debugfs_create_file("identity", 0400, vdpa_aux->dentry,
vdpa_aux, &identity_fops);
}
static int config_show(struct seq_file *seq, void *v)
{
struct pds_vdpa_device *pdsv = seq->private;
struct virtio_net_config vc;
u8 status;
memcpy_fromio(&vc, pdsv->vdpa_aux->vd_mdev.device,
sizeof(struct virtio_net_config));
seq_printf(seq, "mac: %pM\n", vc.mac);
seq_printf(seq, "max_virtqueue_pairs: %d\n",
__virtio16_to_cpu(true, vc.max_virtqueue_pairs));
seq_printf(seq, "mtu: %d\n", __virtio16_to_cpu(true, vc.mtu));
seq_printf(seq, "speed: %d\n", le32_to_cpu(vc.speed));
seq_printf(seq, "duplex: %d\n", vc.duplex);
seq_printf(seq, "rss_max_key_size: %d\n", vc.rss_max_key_size);
seq_printf(seq, "rss_max_indirection_table_length: %d\n",
le16_to_cpu(vc.rss_max_indirection_table_length));
seq_printf(seq, "supported_hash_types: %#x\n",
le32_to_cpu(vc.supported_hash_types));
seq_printf(seq, "vn_status: %#x\n",
__virtio16_to_cpu(true, vc.status));
status = vp_modern_get_status(&pdsv->vdpa_aux->vd_mdev);
seq_printf(seq, "dev_status: %#x\n", status);
print_status_bits(seq, status);
seq_printf(seq, "negotiated_features: %#llx\n", pdsv->negotiated_features);
print_feature_bits_all(seq, pdsv->negotiated_features);
seq_printf(seq, "vdpa_index: %d\n", pdsv->vdpa_index);
seq_printf(seq, "num_vqs: %d\n", pdsv->num_vqs);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(config);
static int vq_show(struct seq_file *seq, void *v)
{
struct pds_vdpa_vq_info *vq = seq->private;
seq_printf(seq, "ready: %d\n", vq->ready);
seq_printf(seq, "desc_addr: %#llx\n", vq->desc_addr);
seq_printf(seq, "avail_addr: %#llx\n", vq->avail_addr);
seq_printf(seq, "used_addr: %#llx\n", vq->used_addr);
seq_printf(seq, "q_len: %d\n", vq->q_len);
seq_printf(seq, "qid: %d\n", vq->qid);
seq_printf(seq, "doorbell: %#llx\n", vq->doorbell);
seq_printf(seq, "avail_idx: %d\n", vq->avail_idx);
seq_printf(seq, "used_idx: %d\n", vq->used_idx);
seq_printf(seq, "irq: %d\n", vq->irq);
seq_printf(seq, "irq-name: %s\n", vq->irq_name);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(vq);
void pds_vdpa_debugfs_add_vdpadev(struct pds_vdpa_aux *vdpa_aux)
{
int i;
debugfs_create_file("config", 0400, vdpa_aux->dentry, vdpa_aux->pdsv, &config_fops);
for (i = 0; i < vdpa_aux->pdsv->num_vqs; i++) {
char name[16];
snprintf(name, sizeof(name), "vq%02d", i);
debugfs_create_file(name, 0400, vdpa_aux->dentry,
&vdpa_aux->pdsv->vqs[i], &vq_fops);
}
}
void pds_vdpa_debugfs_del_vdpadev(struct pds_vdpa_aux *vdpa_aux)
{
debugfs_remove_recursive(vdpa_aux->dentry);
vdpa_aux->dentry = NULL;
}
void pds_vdpa_debugfs_reset_vdpadev(struct pds_vdpa_aux *vdpa_aux)
{
/* we don't keep track of the entries, so remove it all
* then rebuild the basics
*/
pds_vdpa_debugfs_del_vdpadev(vdpa_aux);
pds_vdpa_debugfs_add_pcidev(vdpa_aux);
pds_vdpa_debugfs_add_ident(vdpa_aux);
}
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