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Message-ID: <20230119113140.20208-2-alejandro.lucero-palau@amd.com>
Date: Thu, 19 Jan 2023 11:31:34 +0000
From: <alejandro.lucero-palau@....com>
To: <netdev@...r.kernel.org>, <linux-net-drivers@....com>
CC: <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>,
<edumazet@...gle.com>, <habetsm@...il.com>,
<ecree.xilinx@...il.com>,
Alejandro Lucero <alejandro.lucero-palau@....com>
Subject: [PATCH net-next 1/7] sfc: add devlink support for ef100
From: Alejandro Lucero <alejandro.lucero-palau@....com>
Basic support for devlink info command.
Signed-off-by: Alejandro Lucero <alejandro.lucero-palau@....com>
---
drivers/net/ethernet/sfc/Kconfig | 1 +
drivers/net/ethernet/sfc/Makefile | 3 +-
drivers/net/ethernet/sfc/ef100_nic.c | 6 +
drivers/net/ethernet/sfc/efx_devlink.c | 427 +++++++++++++++++++++++++
drivers/net/ethernet/sfc/efx_devlink.h | 20 ++
drivers/net/ethernet/sfc/mcdi.c | 72 +++++
drivers/net/ethernet/sfc/mcdi.h | 3 +
drivers/net/ethernet/sfc/net_driver.h | 2 +
8 files changed, 533 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/ethernet/sfc/efx_devlink.c
create mode 100644 drivers/net/ethernet/sfc/efx_devlink.h
diff --git a/drivers/net/ethernet/sfc/Kconfig b/drivers/net/ethernet/sfc/Kconfig
index 0950e6b0508f..4af36ba8906b 100644
--- a/drivers/net/ethernet/sfc/Kconfig
+++ b/drivers/net/ethernet/sfc/Kconfig
@@ -22,6 +22,7 @@ config SFC
depends on PTP_1588_CLOCK_OPTIONAL
select MDIO
select CRC32
+ select NET_DEVLINK
help
This driver supports 10/40-gigabit Ethernet cards based on
the Solarflare SFC9100-family controllers.
diff --git a/drivers/net/ethernet/sfc/Makefile b/drivers/net/ethernet/sfc/Makefile
index 712a48d00069..55b9c73cd8ef 100644
--- a/drivers/net/ethernet/sfc/Makefile
+++ b/drivers/net/ethernet/sfc/Makefile
@@ -6,7 +6,8 @@ sfc-y += efx.o efx_common.o efx_channels.o nic.o \
mcdi.o mcdi_port.o mcdi_port_common.o \
mcdi_functions.o mcdi_filters.o mcdi_mon.o \
ef100.o ef100_nic.o ef100_netdev.o \
- ef100_ethtool.o ef100_rx.o ef100_tx.o
+ ef100_ethtool.o ef100_rx.o ef100_tx.o \
+ efx_devlink.o
sfc-$(CONFIG_SFC_MTD) += mtd.o
sfc-$(CONFIG_SFC_SRIOV) += sriov.o ef10_sriov.o ef100_sriov.o ef100_rep.o \
mae.o tc.o tc_bindings.o tc_counters.o
diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c
index ad686c671ab8..14af8f314b83 100644
--- a/drivers/net/ethernet/sfc/ef100_nic.c
+++ b/drivers/net/ethernet/sfc/ef100_nic.c
@@ -27,6 +27,7 @@
#include "tc.h"
#include "mae.h"
#include "rx_common.h"
+#include "efx_devlink.h"
#define EF100_MAX_VIS 4096
#define EF100_NUM_MCDI_BUFFERS 1
@@ -1124,6 +1125,10 @@ int ef100_probe_netdev_pf(struct efx_nic *efx)
netif_warn(efx, probe, net_dev,
"Failed to probe base mport rc %d; representors will not function\n",
rc);
+ } else {
+ if (efx_probe_devlink(efx))
+ netif_warn(efx, probe, net_dev,
+ "Failed to register devlink\n");
}
rc = efx_init_tc(efx);
@@ -1157,6 +1162,7 @@ void ef100_remove(struct efx_nic *efx)
{
struct ef100_nic_data *nic_data = efx->nic_data;
+ efx_fini_devlink(efx);
efx_mcdi_detach(efx);
efx_mcdi_fini(efx);
if (nic_data)
diff --git a/drivers/net/ethernet/sfc/efx_devlink.c b/drivers/net/ethernet/sfc/efx_devlink.c
new file mode 100644
index 000000000000..c506f8f35d25
--- /dev/null
+++ b/drivers/net/ethernet/sfc/efx_devlink.c
@@ -0,0 +1,427 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/****************************************************************************
+ * Driver for AMD network controllers and boards
+ * Copyright (C) 2023, Advanced Micro Devices, Inc.
+ *
+ * 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, incorporated herein by reference.
+ */
+
+#include <linux/rtc.h>
+#include "net_driver.h"
+#include "ef100_nic.h"
+#include "efx_devlink.h"
+#include "nic.h"
+#include "mcdi.h"
+#include "mcdi_functions.h"
+#include "mcdi_pcol.h"
+
+/* Custom devlink-info version object names for details that do not map to the
+ * generic standardized names.
+ */
+#define EFX_DEVLINK_INFO_VERSION_FW_MGMT_SUC "fw.mgmt.suc"
+#define EFX_DEVLINK_INFO_VERSION_FW_MGMT_CMC "fw.mgmt.cmc"
+#define EFX_DEVLINK_INFO_VERSION_FPGA_REV "fpga.rev"
+#define EFX_DEVLINK_INFO_VERSION_DATAPATH_HW "fpga.app"
+#define EFX_DEVLINK_INFO_VERSION_DATAPATH_FW DEVLINK_INFO_VERSION_GENERIC_FW_APP
+#define EFX_DEVLINK_INFO_VERSION_SOC_BOOT "coproc.boot"
+#define EFX_DEVLINK_INFO_VERSION_SOC_UBOOT "coproc.uboot"
+#define EFX_DEVLINK_INFO_VERSION_SOC_MAIN "coproc.main"
+#define EFX_DEVLINK_INFO_VERSION_SOC_RECOVERY "coproc.recovery"
+#define EFX_DEVLINK_INFO_VERSION_FW_EXPROM "fw.exprom"
+#define EFX_DEVLINK_INFO_VERSION_FW_UEFI "fw.uefi"
+
+#define EFX_MAX_VERSION_INFO_LEN 64
+
+static int efx_devlink_info_nvram_partition(struct efx_nic *efx,
+ struct devlink_info_req *req,
+ unsigned int partition_type,
+ const char *version_name)
+{
+ char buf[EFX_MAX_VERSION_INFO_LEN];
+ u16 version[4];
+ int rc;
+
+ rc = efx_mcdi_nvram_metadata(efx, partition_type, NULL, version, NULL,
+ 0);
+ if (rc)
+ return rc;
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u", version[0],
+ version[1], version[2], version[3]);
+ devlink_info_version_stored_put(req, version_name, buf);
+
+ return 0;
+}
+
+static void efx_devlink_info_stored_versions(struct efx_nic *efx,
+ struct devlink_info_req *req)
+{
+ efx_devlink_info_nvram_partition(efx, req, NVRAM_PARTITION_TYPE_BUNDLE,
+ DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID);
+ efx_devlink_info_nvram_partition(efx, req,
+ NVRAM_PARTITION_TYPE_MC_FIRMWARE,
+ DEVLINK_INFO_VERSION_GENERIC_FW_MGMT);
+ efx_devlink_info_nvram_partition(efx, req,
+ NVRAM_PARTITION_TYPE_SUC_FIRMWARE,
+ EFX_DEVLINK_INFO_VERSION_FW_MGMT_SUC);
+ efx_devlink_info_nvram_partition(efx, req,
+ NVRAM_PARTITION_TYPE_EXPANSION_ROM,
+ EFX_DEVLINK_INFO_VERSION_FW_EXPROM);
+ efx_devlink_info_nvram_partition(efx, req,
+ NVRAM_PARTITION_TYPE_EXPANSION_UEFI,
+ EFX_DEVLINK_INFO_VERSION_FW_UEFI);
+}
+
+#define EFX_MAX_SERIALNUM_LEN (ETH_ALEN * 2 + 1)
+
+static void efx_devlink_info_board_cfg(struct efx_nic *efx,
+ struct devlink_info_req *req)
+{
+ char sn[EFX_MAX_SERIALNUM_LEN];
+ u8 mac_address[ETH_ALEN];
+ int rc;
+
+ rc = efx_mcdi_get_board_cfg(efx, (u8 *)mac_address, NULL, NULL);
+ if (!rc) {
+ snprintf(sn, EFX_MAX_SERIALNUM_LEN, "%pm", mac_address);
+ devlink_info_serial_number_put(req, sn);
+ }
+}
+
+#define EFX_VER_FLAG(_f) \
+ (MC_CMD_GET_VERSION_V5_OUT_ ## _f ## _PRESENT_LBN)
+
+static void efx_devlink_info_running_versions(struct efx_nic *efx,
+ struct devlink_info_req *req)
+{
+ MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_VERSION_V5_OUT_LEN);
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_VERSION_EXT_IN_LEN);
+ char buf[EFX_MAX_VERSION_INFO_LEN];
+ unsigned int flags, build_id;
+ union {
+ const __le32 *dwords;
+ const __le16 *words;
+ const char *str;
+ } ver;
+ struct rtc_time build_date;
+ size_t outlength, offset;
+ u64 tstamp;
+ int rc;
+
+ rc = efx_mcdi_rpc(efx, MC_CMD_GET_VERSION, inbuf, sizeof(inbuf),
+ outbuf, sizeof(outbuf), &outlength);
+ if (rc || outlength < MC_CMD_GET_VERSION_OUT_LEN)
+ return;
+
+ /* Handle previous output */
+ if (outlength < MC_CMD_GET_VERSION_V2_OUT_LEN) {
+ ver.words = (__le16 *)MCDI_PTR(outbuf,
+ GET_VERSION_EXT_OUT_VERSION);
+ offset = snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le16_to_cpu(ver.words[0]),
+ le16_to_cpu(ver.words[1]),
+ le16_to_cpu(ver.words[2]),
+ le16_to_cpu(ver.words[3]));
+
+ devlink_info_version_running_put(req,
+ DEVLINK_INFO_VERSION_GENERIC_FW_MGMT,
+ buf);
+ return;
+ }
+
+ /* Handle V2 additions */
+ flags = MCDI_DWORD(outbuf, GET_VERSION_V2_OUT_FLAGS);
+ if (flags & BIT(EFX_VER_FLAG(BOARD_EXT_INFO))) {
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%s",
+ MCDI_PTR(outbuf, GET_VERSION_V2_OUT_BOARD_NAME));
+ devlink_info_version_fixed_put(req,
+ DEVLINK_INFO_VERSION_GENERIC_BOARD_ID,
+ buf);
+
+ /* Favour full board version if present (in V5 or later) */
+ if (~flags & BIT(EFX_VER_FLAG(BOARD_VERSION))) {
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u",
+ MCDI_DWORD(outbuf,
+ GET_VERSION_V2_OUT_BOARD_REVISION));
+ devlink_info_version_fixed_put(req,
+ DEVLINK_INFO_VERSION_GENERIC_BOARD_REV,
+ buf);
+ }
+
+ ver.str = MCDI_PTR(outbuf, GET_VERSION_V2_OUT_BOARD_SERIAL);
+ if (ver.str[0])
+ devlink_info_board_serial_number_put(req, ver.str);
+ }
+
+ if (flags & BIT(EFX_VER_FLAG(FPGA_EXT_INFO))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V2_OUT_FPGA_VERSION);
+ offset = snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u_%c%u",
+ le32_to_cpu(ver.dwords[0]),
+ 'A' + le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]));
+
+ ver.str = MCDI_PTR(outbuf, GET_VERSION_V2_OUT_FPGA_EXTRA);
+ if (ver.str[0])
+ snprintf(&buf[offset], EFX_MAX_VERSION_INFO_LEN - offset,
+ " (%s)", ver.str);
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_FPGA_REV,
+ buf);
+ }
+
+ if (flags & BIT(EFX_VER_FLAG(CMC_EXT_INFO))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V2_OUT_CMCFW_VERSION);
+ offset = snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]),
+ le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]),
+ le32_to_cpu(ver.dwords[3]));
+
+ tstamp = MCDI_QWORD(outbuf,
+ GET_VERSION_V2_OUT_CMCFW_BUILD_DATE);
+ if (tstamp) {
+ rtc_time64_to_tm(tstamp, &build_date);
+ snprintf(&buf[offset], EFX_MAX_VERSION_INFO_LEN - offset,
+ " (%ptRd)", &build_date);
+ }
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_FW_MGMT_CMC,
+ buf);
+ }
+
+ ver.words = (__le16 *)MCDI_PTR(outbuf, GET_VERSION_V2_OUT_VERSION);
+ offset = snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le16_to_cpu(ver.words[0]), le16_to_cpu(ver.words[1]),
+ le16_to_cpu(ver.words[2]), le16_to_cpu(ver.words[3]));
+ if (flags & BIT(EFX_VER_FLAG(MCFW_EXT_INFO))) {
+ build_id = MCDI_DWORD(outbuf, GET_VERSION_V2_OUT_MCFW_BUILD_ID);
+ snprintf(&buf[offset], EFX_MAX_VERSION_INFO_LEN - offset,
+ " (%x) %s", build_id,
+ MCDI_PTR(outbuf, GET_VERSION_V2_OUT_MCFW_BUILD_NAME));
+ }
+ devlink_info_version_running_put(req,
+ DEVLINK_INFO_VERSION_GENERIC_FW_MGMT,
+ buf);
+
+ if (flags & BIT(EFX_VER_FLAG(SUCFW_EXT_INFO))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V2_OUT_SUCFW_VERSION);
+ tstamp = MCDI_QWORD(outbuf,
+ GET_VERSION_V2_OUT_SUCFW_BUILD_DATE);
+ rtc_time64_to_tm(tstamp, &build_date);
+ build_id = MCDI_DWORD(outbuf, GET_VERSION_V2_OUT_SUCFW_CHIP_ID);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN,
+ "%u.%u.%u.%u type %x (%ptRd)",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]), le32_to_cpu(ver.dwords[3]),
+ build_id, &build_date);
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_FW_MGMT_SUC,
+ buf);
+ }
+
+ if (outlength < MC_CMD_GET_VERSION_V3_OUT_LEN)
+ return;
+
+ /* Handle V3 additions */
+ if (flags & BIT(EFX_VER_FLAG(DATAPATH_HW_VERSION))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V3_OUT_DATAPATH_HW_VERSION);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]));
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_DATAPATH_HW,
+ buf);
+ }
+
+ if (flags & BIT(EFX_VER_FLAG(DATAPATH_FW_VERSION))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V3_OUT_DATAPATH_FW_VERSION);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]));
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_DATAPATH_FW,
+ buf);
+ }
+
+ if (outlength < MC_CMD_GET_VERSION_V4_OUT_LEN)
+ return;
+
+ /* Handle V4 additions */
+ if (flags & BIT(EFX_VER_FLAG(SOC_BOOT_VERSION))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V4_OUT_SOC_BOOT_VERSION);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]),
+ le32_to_cpu(ver.dwords[3]));
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_SOC_BOOT,
+ buf);
+ }
+
+ if (flags & BIT(EFX_VER_FLAG(SOC_UBOOT_VERSION))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V4_OUT_SOC_UBOOT_VERSION);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]),
+ le32_to_cpu(ver.dwords[3]));
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_SOC_UBOOT,
+ buf);
+ }
+
+ if (flags & BIT(EFX_VER_FLAG(SOC_MAIN_ROOTFS_VERSION))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V4_OUT_SOC_MAIN_ROOTFS_VERSION);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]),
+ le32_to_cpu(ver.dwords[3]));
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_SOC_MAIN,
+ buf);
+ }
+
+ if (flags & BIT(EFX_VER_FLAG(SOC_RECOVERY_BUILDROOT_VERSION))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V4_OUT_SOC_RECOVERY_BUILDROOT_VERSION);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]),
+ le32_to_cpu(ver.dwords[3]));
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_SOC_RECOVERY,
+ buf);
+ }
+
+ if (flags & BIT(EFX_VER_FLAG(SUCFW_VERSION)) &&
+ ~flags & BIT(EFX_VER_FLAG(SUCFW_EXT_INFO))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V4_OUT_SUCFW_VERSION);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]),
+ le32_to_cpu(ver.dwords[3]));
+
+ devlink_info_version_running_put(req,
+ EFX_DEVLINK_INFO_VERSION_FW_MGMT_SUC,
+ buf);
+ }
+
+ if (outlength < MC_CMD_GET_VERSION_V5_OUT_LEN)
+ return;
+
+ /* Handle V5 additions */
+
+ if (flags & BIT(EFX_VER_FLAG(BOARD_VERSION))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V5_OUT_BOARD_VERSION);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]),
+ le32_to_cpu(ver.dwords[3]));
+
+ devlink_info_version_running_put(req,
+ DEVLINK_INFO_VERSION_GENERIC_BOARD_REV,
+ buf);
+ }
+
+ if (flags & BIT(EFX_VER_FLAG(BUNDLE_VERSION))) {
+ ver.dwords = (__le32 *)MCDI_PTR(outbuf,
+ GET_VERSION_V5_OUT_BUNDLE_VERSION);
+
+ snprintf(buf, EFX_MAX_VERSION_INFO_LEN, "%u.%u.%u.%u",
+ le32_to_cpu(ver.dwords[0]), le32_to_cpu(ver.dwords[1]),
+ le32_to_cpu(ver.dwords[2]),
+ le32_to_cpu(ver.dwords[3]));
+
+ devlink_info_version_running_put(req,
+ DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID,
+ buf);
+ }
+}
+
+#undef EFX_VER_FLAG
+
+static void efx_devlink_info_query_all(struct efx_nic *efx,
+ struct devlink_info_req *req)
+{
+ efx_devlink_info_board_cfg(efx, req);
+ efx_devlink_info_stored_versions(efx, req);
+ efx_devlink_info_running_versions(efx, req);
+}
+
+struct efx_devlink {
+ struct efx_nic *efx;
+};
+
+static int efx_devlink_info_get(struct devlink *devlink,
+ struct devlink_info_req *req,
+ struct netlink_ext_ack *extack)
+{
+ struct efx_devlink *devlink_private = devlink_priv(devlink);
+ struct efx_nic *efx = devlink_private->efx;
+
+ efx_devlink_info_query_all(efx, req);
+ return 0;
+}
+
+static const struct devlink_ops sfc_devlink_ops = {
+ .info_get = efx_devlink_info_get,
+};
+
+void efx_fini_devlink(struct efx_nic *efx)
+{
+ if (efx->devlink) {
+ struct efx_devlink *devlink_private;
+
+ devlink_private = devlink_priv(efx->devlink);
+
+ devlink_unregister(efx->devlink);
+ devlink_free(efx->devlink);
+ efx->devlink = NULL;
+ }
+}
+
+int efx_probe_devlink(struct efx_nic *efx)
+{
+ struct efx_devlink *devlink_private;
+
+ efx->devlink = devlink_alloc(&sfc_devlink_ops,
+ sizeof(struct efx_devlink),
+ &efx->pci_dev->dev);
+ if (!efx->devlink)
+ return -ENOMEM;
+ devlink_private = devlink_priv(efx->devlink);
+ devlink_private->efx = efx;
+
+ devlink_register(efx->devlink);
+
+ return 0;
+}
diff --git a/drivers/net/ethernet/sfc/efx_devlink.h b/drivers/net/ethernet/sfc/efx_devlink.h
new file mode 100644
index 000000000000..997f878aea93
--- /dev/null
+++ b/drivers/net/ethernet/sfc/efx_devlink.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/****************************************************************************
+ * Driver for AMD network controllers and boards
+ * Copyright (C) 2023, Advanced Micro Devices, Inc.
+ *
+ * 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, incorporated herein by reference.
+ */
+
+#ifndef _EFX_DEVLINK_H
+#define _EFX_DEVLINK_H
+
+#include "net_driver.h"
+#include <net/devlink.h>
+
+int efx_probe_devlink(struct efx_nic *efx);
+void efx_fini_devlink(struct efx_nic *efx);
+
+#endif /* _EFX_DEVLINK_H */
diff --git a/drivers/net/ethernet/sfc/mcdi.c b/drivers/net/ethernet/sfc/mcdi.c
index af338208eae9..328cae82a7d8 100644
--- a/drivers/net/ethernet/sfc/mcdi.c
+++ b/drivers/net/ethernet/sfc/mcdi.c
@@ -2308,6 +2308,78 @@ static int efx_mcdi_nvram_update_finish(struct efx_nic *efx, unsigned int type)
return rc;
}
+int efx_mcdi_nvram_metadata(struct efx_nic *efx, unsigned int type,
+ u32 *subtype, u16 version[4], char *desc,
+ size_t descsize)
+{
+ MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_METADATA_IN_LEN);
+ efx_dword_t *outbuf;
+ size_t outlen;
+ u32 flags;
+ int rc;
+
+ outbuf = kzalloc(MC_CMD_NVRAM_METADATA_OUT_LENMAX_MCDI2, GFP_KERNEL);
+ if (!outbuf)
+ return -ENOMEM;
+
+ MCDI_SET_DWORD(inbuf, NVRAM_METADATA_IN_TYPE, type);
+
+ rc = efx_mcdi_rpc_quiet(efx, MC_CMD_NVRAM_METADATA, inbuf,
+ sizeof(inbuf), outbuf,
+ MC_CMD_NVRAM_METADATA_OUT_LENMAX_MCDI2,
+ &outlen);
+ if (rc)
+ goto out_free;
+ if (outlen < MC_CMD_NVRAM_METADATA_OUT_LENMIN) {
+ rc = -EIO;
+ goto out_free;
+ }
+
+ flags = MCDI_DWORD(outbuf, NVRAM_METADATA_OUT_FLAGS);
+
+ if (desc && descsize > 0) {
+ if (flags & BIT(MC_CMD_NVRAM_METADATA_OUT_DESCRIPTION_VALID_LBN)) {
+ if (descsize <=
+ MC_CMD_NVRAM_METADATA_OUT_DESCRIPTION_NUM(outlen)) {
+ rc = -E2BIG;
+ goto out_free;
+ }
+
+ strncpy(desc,
+ MCDI_PTR(outbuf, NVRAM_METADATA_OUT_DESCRIPTION),
+ MC_CMD_NVRAM_METADATA_OUT_DESCRIPTION_NUM(outlen));
+ desc[MC_CMD_NVRAM_METADATA_OUT_DESCRIPTION_NUM(outlen)] = '\0';
+ } else {
+ desc[0] = '\0';
+ }
+ }
+
+ if (subtype) {
+ if (flags & BIT(MC_CMD_NVRAM_METADATA_OUT_SUBTYPE_VALID_LBN))
+ *subtype = MCDI_DWORD(outbuf, NVRAM_METADATA_OUT_SUBTYPE);
+ else
+ *subtype = 0;
+ }
+
+ if (version) {
+ if (flags & BIT(MC_CMD_NVRAM_METADATA_OUT_VERSION_VALID_LBN)) {
+ version[0] = MCDI_WORD(outbuf, NVRAM_METADATA_OUT_VERSION_W);
+ version[1] = MCDI_WORD(outbuf, NVRAM_METADATA_OUT_VERSION_X);
+ version[2] = MCDI_WORD(outbuf, NVRAM_METADATA_OUT_VERSION_Y);
+ version[3] = MCDI_WORD(outbuf, NVRAM_METADATA_OUT_VERSION_Z);
+ } else {
+ version[0] = 0;
+ version[1] = 0;
+ version[2] = 0;
+ version[3] = 0;
+ }
+ }
+
+out_free:
+ kfree(outbuf);
+ return rc;
+}
+
int efx_mcdi_mtd_read(struct mtd_info *mtd, loff_t start,
size_t len, size_t *retlen, u8 *buffer)
{
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index 7e35fec9da35..63b090587f7a 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -379,6 +379,9 @@ int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
bool *protected_out);
int efx_new_mcdi_nvram_test_all(struct efx_nic *efx);
int efx_mcdi_nvram_test_all(struct efx_nic *efx);
+int efx_mcdi_nvram_metadata(struct efx_nic *efx, unsigned int type,
+ u32 *subtype, u16 version[4], char *desc,
+ size_t descsize);
int efx_mcdi_handle_assertion(struct efx_nic *efx);
int efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode);
int efx_mcdi_wol_filter_set_magic(struct efx_nic *efx, const u8 *mac,
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 3b49e216768b..d036641dc043 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -994,6 +994,7 @@ enum efx_xdp_tx_queues_mode {
* xdp_rxq_info structures?
* @netdev_notifier: Netdevice notifier.
* @tc: state for TC offload (EF100).
+ * @devlink: reference to devlink structure owned by this device
* @mem_bar: The BAR that is mapped into membase.
* @reg_base: Offset from the start of the bar to the function control window.
* @monitor_work: Hardware monitor workitem
@@ -1179,6 +1180,7 @@ struct efx_nic {
struct notifier_block netdev_notifier;
struct efx_tc_state *tc;
+ struct devlink *devlink;
unsigned int mem_bar;
u32 reg_base;
--
2.17.1
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