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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2025, Intel Corporation. */
#include "ixd.h"
#include "ixd_devlink.h"
#define IXD_DEVLINK_INFO_LEN 128
/**
* ixd_fill_dsn - Get the serial number for the ixd device
* @adapter: adapter to query
* @buf: storage buffer for the info request
*/
static void ixd_fill_dsn(struct ixd_adapter *adapter, char *buf)
{
u8 dsn[8];
/* Copy the DSN into an array in Big Endian format */
put_unaligned_be64(pci_get_dsn(adapter->cp_ctx.mmio_info.pdev), dsn);
snprintf(buf, IXD_DEVLINK_INFO_LEN, "%8phD", dsn);
}
/**
* ixd_fill_device_name - Get the name of the underlying hardware
* @adapter: adapter to query
* @buf: storage buffer for the info request
* @buf_size: size of the storage buffer
*/
static void ixd_fill_device_name(struct ixd_adapter *adapter, char *buf,
size_t buf_size)
{
if (adapter->caps.device_type == cpu_to_le32(VIRTCHNL2_MEV_DEVICE))
snprintf(buf, buf_size, "%s", "MEV");
else
snprintf(buf, buf_size, "%s", "UNKNOWN");
}
/**
* ixd_devlink_info_get - .info_get devlink handler
* @devlink: devlink instance structure
* @req: the devlink info request
* @extack: extended netdev ack structure
*
* Callback for the devlink .info_get operation. Reports information about the
* device.
*
* Return: zero on success or an error code on failure.
*/
static int ixd_devlink_info_get(struct devlink *devlink,
struct devlink_info_req *req,
struct netlink_ext_ack *extack)
{
struct ixd_adapter *adapter = devlink_priv(devlink);
char buf[IXD_DEVLINK_INFO_LEN];
int err;
ixd_fill_dsn(adapter, buf);
err = devlink_info_serial_number_put(req, buf);
if (err)
return err;
ixd_fill_device_name(adapter, buf, IXD_DEVLINK_INFO_LEN);
err = devlink_info_version_fixed_put(req, "device.type", buf);
if (err)
return err;
snprintf(buf, sizeof(buf), "%u.%u",
adapter->vc_ver.major, adapter->vc_ver.minor);
return devlink_info_version_running_put(req,
DEVLINK_INFO_VERSION_GENERIC_FW_MGMT_API,
buf);
}
static const struct devlink_ops ixd_devlink_ops = {
.info_get = ixd_devlink_info_get,
};
/**
* ixd_adapter_alloc - Allocate devlink and return adapter pointer
* @dev: the device to allocate for
*
* Allocate a devlink instance for this device and return the private area as
* the adapter structure.
*
* Return: adapter structure on success, NULL on failure
*/
struct ixd_adapter *ixd_adapter_alloc(struct device *dev)
{
struct devlink *devlink;
devlink = devlink_alloc(&ixd_devlink_ops, sizeof(struct ixd_adapter),
dev);
if (!devlink)
return NULL;
return devlink_priv(devlink);
}
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