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Message-ID: <2d7dfc88-df55-8aec-5d23-5e8bae05fa77@amd.com>
Date: Thu, 26 Jan 2023 14:32:15 +0000
From: "Lucero Palau, Alejandro" <alejandro.lucero-palau@....com>
To: "Lucero Palau, Alejandro" <alejandro.lucero-palau@....com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"linux-net-drivers (AMD-Xilinx)" <linux-net-drivers@....com>
CC: "davem@...emloft.net" <davem@...emloft.net>,
"kuba@...nel.org" <kuba@...nel.org>,
"pabeni@...hat.com" <pabeni@...hat.com>,
"edumazet@...gle.com" <edumazet@...gle.com>,
"habetsm.xilinx@...il.com" <habetsm.xilinx@...il.com>,
"ecree.xilinx@...il.com" <ecree.xilinx@...il.com>
Subject: Re: [PATCH v2 net-next 2/8] sfc: add devlink info support for ef100
On 1/24/23 22:30, alejandro.lucero-palau@....com wrote:
> From: Alejandro Lucero <alejandro.lucero-palau@....com>
>
> Support for devlink info command.
>
> Signed-off-by: Alejandro Lucero <alejandro.lucero-palau@....com>
> ---
> Documentation/networking/devlink/sfc.rst | 57 ++++
> drivers/net/ethernet/sfc/efx_devlink.c | 404 +++++++++++++++++++++++
> drivers/net/ethernet/sfc/efx_devlink.h | 17 +
> drivers/net/ethernet/sfc/mcdi.c | 72 ++++
> drivers/net/ethernet/sfc/mcdi.h | 3 +
> 5 files changed, 553 insertions(+)
> create mode 100644 Documentation/networking/devlink/sfc.rst
>
> diff --git a/Documentation/networking/devlink/sfc.rst b/Documentation/networking/devlink/sfc.rst
> new file mode 100644
> index 000000000000..e2541a2f18ee
> --- /dev/null
> +++ b/Documentation/networking/devlink/sfc.rst
> @@ -0,0 +1,57 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +===================
> +sfc devlink support
> +===================
> +
> +This document describes the devlink features implemented by the ``sfc``
> +device driver for the ef100 device.
> +
> +Info versions
> +=============
> +
> +The ``sfc`` driver reports the following versions
> +
> +.. list-table:: devlink info versions implemented
> + :widths: 5 5 90
> +
> + * - Name
> + - Type
> + - Description
> + * - ``fw.mgmt.suc``
> + - running
> + - For boards where the management function is split between multiple
> + control units, this is the SUC control unit's firmware version.
> + * - ``fw.mgmt.cmc``
> + - running
> + - For boards where the management function is split between multiple
> + control units, this is the CMC control unit's firmware version.
> + * - ``fpga.rev``
> + - running
> + - FPGA design revision.
> + * - ``fpga.app``
> + - running
> + - Datapath programmable logic version.
> + * - ``fw.app``
> + - running
> + - Datapath software/microcode/firmware version.
> + * - ``coproc.boot``
> + - running
> + - SmartNIC application co-processor (APU) first stage boot loader version.
> + * - ``coproc.uboot``
> + - running
> + - SmartNIC application co-processor (APU) co-operating system loader version.
> + * - ``coproc.main``
> + - running
> + - SmartNIC application co-processor (APU) main operating system version.
> + * - ``coproc.recovery``
> + - running
> + - SmartNIC application co-processor (APU) recovery operating system version.
> + * - ``fw.exprom``
> + - running
> + - Expansion ROM version. For boards where the expansion ROM is split between
> + multiple images (e.g. PXE and UEFI), this is the specifically the PXE boot
> + ROM version.
> + * - ``fw.uefi``
> + - running
> + - UEFI driver version (No UNDI support).
> diff --git a/drivers/net/ethernet/sfc/efx_devlink.c b/drivers/net/ethernet/sfc/efx_devlink.c
> index fab06aaa4b8a..2593248928a6 100644
> --- a/drivers/net/ethernet/sfc/efx_devlink.c
> +++ b/drivers/net/ethernet/sfc/efx_devlink.c
> @@ -21,7 +21,411 @@ struct efx_devlink {
> struct efx_nic *efx;
> };
>
> +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_VER_FLAG(_f) \
> + (MC_CMD_GET_VERSION_V5_OUT_ ## _f ## _PRESENT_LBN)
> +
> +static void efx_devlink_info_running_v2(struct efx_nic *efx,
> + struct devlink_info_req *req,
> + unsigned int flags, efx_dword_t *outbuf)
> +{
> + char buf[EFX_MAX_VERSION_INFO_LEN];
> + union {
> + const __le32 *dwords;
> + const __le16 *words;
> + const char *str;
> + } ver;
> + struct rtc_time build_date;
> + unsigned int build_id;
> + size_t offset;
> + u64 tstamp;
> +
> + 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);
> + }
> +}
> +
> +static void efx_devlink_info_running_v3(struct efx_nic *efx,
> + struct devlink_info_req *req,
> + unsigned int flags, efx_dword_t *outbuf)
> +{
> + char buf[EFX_MAX_VERSION_INFO_LEN];
> + union {
> + const __le32 *dwords;
> + const __le16 *words;
> + const char *str;
> + } ver;
> +
> + 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);
> + }
> +}
> +
> +static void efx_devlink_info_running_v4(struct efx_nic *efx,
> + struct devlink_info_req *req,
> + unsigned int flags, efx_dword_t *outbuf)
> +{
> + char buf[EFX_MAX_VERSION_INFO_LEN];
> + union {
> + const __le32 *dwords;
> + const __le16 *words;
> + const char *str;
> + } ver;
> +
> + 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);
> + }
> +}
> +
> +static void efx_devlink_info_running_v5(struct efx_nic *efx,
> + struct devlink_info_req *req,
> + unsigned int flags, efx_dword_t *outbuf)
> +{
> + char buf[EFX_MAX_VERSION_INFO_LEN];
> + union {
> + const __le32 *dwords;
> + const __le16 *words;
> + const char *str;
> + } ver;
> +
> + 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);
> + }
> +}
> +
> +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];
> + union {
> + const __le32 *dwords;
> + const __le16 *words;
> + const char *str;
> + } ver;
> + size_t outlength, offset;
After splitting up this function offset variable is not needed/used so
patchwork reports this as error.
Should I send a v3 with this fix or better to wail until some review is
done?
> + unsigned int flags;
> + 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);
> + efx_devlink_info_running_v2(efx, req, flags, outbuf);
> +
> + if (outlength < MC_CMD_GET_VERSION_V3_OUT_LEN)
> + return;
> +
> + /* Handle V3 additions */
> + efx_devlink_info_running_v3(efx, req, flags, outbuf);
> +
> + if (outlength < MC_CMD_GET_VERSION_V4_OUT_LEN)
> + return;
> +
> + /* Handle V4 additions */
> + efx_devlink_info_running_v4(efx, req, flags, outbuf);
> +
> + if (outlength < MC_CMD_GET_VERSION_V5_OUT_LEN)
> + return;
> +
> + /* Handle V5 additions */
> + efx_devlink_info_running_v5(efx, req, flags, outbuf);
> +}
> +
> +#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);
> + }
> +}
> +
> +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_board_cfg(efx, req);
> + efx_devlink_info_stored_versions(efx, req);
> + efx_devlink_info_running_versions(efx, req);
> + return 0;
> +}
> +
> static const struct devlink_ops sfc_devlink_ops = {
> + .info_get = efx_devlink_info_get,
> };
>
> void efx_fini_devlink_start(struct efx_nic *efx)
> diff --git a/drivers/net/ethernet/sfc/efx_devlink.h b/drivers/net/ethernet/sfc/efx_devlink.h
> index 55d0d8aeca1e..8bcd077d8d8d 100644
> --- a/drivers/net/ethernet/sfc/efx_devlink.h
> +++ b/drivers/net/ethernet/sfc/efx_devlink.h
> @@ -14,6 +14,23 @@
> #include "net_driver.h"
> #include <net/devlink.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
> +
> int efx_probe_devlink(struct efx_nic *efx);
> void efx_probe_devlink_done(struct efx_nic *efx);
> void efx_fini_devlink_start(struct efx_nic *efx);
> 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..5cb202684858 100644
> --- a/drivers/net/ethernet/sfc/mcdi.h
> +++ b/drivers/net/ethernet/sfc/mcdi.h
> @@ -378,6 +378,9 @@ int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
> size_t *size_out, size_t *erase_size_out,
> bool *protected_out);
> int efx_new_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_nvram_test_all(struct efx_nic *efx);
> int efx_mcdi_handle_assertion(struct efx_nic *efx);
> int efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode);
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