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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/ethernet/intel/ice/ice_devlink.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_devlink.c')
-rw-r--r--drivers/net/ethernet/intel/ice/ice_devlink.c1366
1 files changed, 1366 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.c b/drivers/net/ethernet/intel/ice/ice_devlink.c
new file mode 100644
index 000000000..e6ec20079
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_devlink.c
@@ -0,0 +1,1366 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2020, Intel Corporation. */
+
+#include <linux/vmalloc.h>
+
+#include "ice.h"
+#include "ice_lib.h"
+#include "ice_devlink.h"
+#include "ice_eswitch.h"
+#include "ice_fw_update.h"
+
+static int ice_active_port_option = -1;
+
+/* context for devlink info version reporting */
+struct ice_info_ctx {
+ char buf[128];
+ struct ice_orom_info pending_orom;
+ struct ice_nvm_info pending_nvm;
+ struct ice_netlist_info pending_netlist;
+ struct ice_hw_dev_caps dev_caps;
+};
+
+/* The following functions are used to format specific strings for various
+ * devlink info versions. The ctx parameter is used to provide the storage
+ * buffer, as well as any ancillary information calculated when the info
+ * request was made.
+ *
+ * If a version does not exist, for example when attempting to get the
+ * inactive version of flash when there is no pending update, the function
+ * should leave the buffer in the ctx structure empty.
+ */
+
+static void ice_info_get_dsn(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ u8 dsn[8];
+
+ /* Copy the DSN into an array in Big Endian format */
+ put_unaligned_be64(pci_get_dsn(pf->pdev), dsn);
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "%8phD", dsn);
+}
+
+static void ice_info_pba(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_hw *hw = &pf->hw;
+ int status;
+
+ status = ice_read_pba_string(hw, (u8 *)ctx->buf, sizeof(ctx->buf));
+ if (status)
+ /* We failed to locate the PBA, so just skip this entry */
+ dev_dbg(ice_pf_to_dev(pf), "Failed to read Product Board Assembly string, status %d\n",
+ status);
+}
+
+static void ice_info_fw_mgmt(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_hw *hw = &pf->hw;
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "%u.%u.%u",
+ hw->fw_maj_ver, hw->fw_min_ver, hw->fw_patch);
+}
+
+static void ice_info_fw_api(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_hw *hw = &pf->hw;
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "%u.%u.%u", hw->api_maj_ver,
+ hw->api_min_ver, hw->api_patch);
+}
+
+static void ice_info_fw_build(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_hw *hw = &pf->hw;
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "0x%08x", hw->fw_build);
+}
+
+static void ice_info_orom_ver(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_orom_info *orom = &pf->hw.flash.orom;
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "%u.%u.%u",
+ orom->major, orom->build, orom->patch);
+}
+
+static void
+ice_info_pending_orom_ver(struct ice_pf __always_unused *pf,
+ struct ice_info_ctx *ctx)
+{
+ struct ice_orom_info *orom = &ctx->pending_orom;
+
+ if (ctx->dev_caps.common_cap.nvm_update_pending_orom)
+ snprintf(ctx->buf, sizeof(ctx->buf), "%u.%u.%u",
+ orom->major, orom->build, orom->patch);
+}
+
+static void ice_info_nvm_ver(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_nvm_info *nvm = &pf->hw.flash.nvm;
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "%x.%02x", nvm->major, nvm->minor);
+}
+
+static void
+ice_info_pending_nvm_ver(struct ice_pf __always_unused *pf,
+ struct ice_info_ctx *ctx)
+{
+ struct ice_nvm_info *nvm = &ctx->pending_nvm;
+
+ if (ctx->dev_caps.common_cap.nvm_update_pending_nvm)
+ snprintf(ctx->buf, sizeof(ctx->buf), "%x.%02x",
+ nvm->major, nvm->minor);
+}
+
+static void ice_info_eetrack(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_nvm_info *nvm = &pf->hw.flash.nvm;
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "0x%08x", nvm->eetrack);
+}
+
+static void
+ice_info_pending_eetrack(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_nvm_info *nvm = &ctx->pending_nvm;
+
+ if (ctx->dev_caps.common_cap.nvm_update_pending_nvm)
+ snprintf(ctx->buf, sizeof(ctx->buf), "0x%08x", nvm->eetrack);
+}
+
+static void ice_info_ddp_pkg_name(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_hw *hw = &pf->hw;
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "%s", hw->active_pkg_name);
+}
+
+static void
+ice_info_ddp_pkg_version(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_pkg_ver *pkg = &pf->hw.active_pkg_ver;
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "%u.%u.%u.%u",
+ pkg->major, pkg->minor, pkg->update, pkg->draft);
+}
+
+static void
+ice_info_ddp_pkg_bundle_id(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ snprintf(ctx->buf, sizeof(ctx->buf), "0x%08x", pf->hw.active_track_id);
+}
+
+static void ice_info_netlist_ver(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_netlist_info *netlist = &pf->hw.flash.netlist;
+
+ /* The netlist version fields are BCD formatted */
+ snprintf(ctx->buf, sizeof(ctx->buf), "%x.%x.%x-%x.%x.%x",
+ netlist->major, netlist->minor,
+ netlist->type >> 16, netlist->type & 0xFFFF,
+ netlist->rev, netlist->cust_ver);
+}
+
+static void ice_info_netlist_build(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+ struct ice_netlist_info *netlist = &pf->hw.flash.netlist;
+
+ snprintf(ctx->buf, sizeof(ctx->buf), "0x%08x", netlist->hash);
+}
+
+static void
+ice_info_pending_netlist_ver(struct ice_pf __always_unused *pf,
+ struct ice_info_ctx *ctx)
+{
+ struct ice_netlist_info *netlist = &ctx->pending_netlist;
+
+ /* The netlist version fields are BCD formatted */
+ if (ctx->dev_caps.common_cap.nvm_update_pending_netlist)
+ snprintf(ctx->buf, sizeof(ctx->buf), "%x.%x.%x-%x.%x.%x",
+ netlist->major, netlist->minor,
+ netlist->type >> 16, netlist->type & 0xFFFF,
+ netlist->rev, netlist->cust_ver);
+}
+
+static void
+ice_info_pending_netlist_build(struct ice_pf __always_unused *pf,
+ struct ice_info_ctx *ctx)
+{
+ struct ice_netlist_info *netlist = &ctx->pending_netlist;
+
+ if (ctx->dev_caps.common_cap.nvm_update_pending_netlist)
+ snprintf(ctx->buf, sizeof(ctx->buf), "0x%08x", netlist->hash);
+}
+
+#define fixed(key, getter) { ICE_VERSION_FIXED, key, getter, NULL }
+#define running(key, getter) { ICE_VERSION_RUNNING, key, getter, NULL }
+#define stored(key, getter, fallback) { ICE_VERSION_STORED, key, getter, fallback }
+
+/* The combined() macro inserts both the running entry as well as a stored
+ * entry. The running entry will always report the version from the active
+ * handler. The stored entry will first try the pending handler, and fallback
+ * to the active handler if the pending function does not report a version.
+ * The pending handler should check the status of a pending update for the
+ * relevant flash component. It should only fill in the buffer in the case
+ * where a valid pending version is available. This ensures that the related
+ * stored and running versions remain in sync, and that stored versions are
+ * correctly reported as expected.
+ */
+#define combined(key, active, pending) \
+ running(key, active), \
+ stored(key, pending, active)
+
+enum ice_version_type {
+ ICE_VERSION_FIXED,
+ ICE_VERSION_RUNNING,
+ ICE_VERSION_STORED,
+};
+
+static const struct ice_devlink_version {
+ enum ice_version_type type;
+ const char *key;
+ void (*getter)(struct ice_pf *pf, struct ice_info_ctx *ctx);
+ void (*fallback)(struct ice_pf *pf, struct ice_info_ctx *ctx);
+} ice_devlink_versions[] = {
+ fixed(DEVLINK_INFO_VERSION_GENERIC_BOARD_ID, ice_info_pba),
+ running(DEVLINK_INFO_VERSION_GENERIC_FW_MGMT, ice_info_fw_mgmt),
+ running("fw.mgmt.api", ice_info_fw_api),
+ running("fw.mgmt.build", ice_info_fw_build),
+ combined(DEVLINK_INFO_VERSION_GENERIC_FW_UNDI, ice_info_orom_ver, ice_info_pending_orom_ver),
+ combined("fw.psid.api", ice_info_nvm_ver, ice_info_pending_nvm_ver),
+ combined(DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID, ice_info_eetrack, ice_info_pending_eetrack),
+ running("fw.app.name", ice_info_ddp_pkg_name),
+ running(DEVLINK_INFO_VERSION_GENERIC_FW_APP, ice_info_ddp_pkg_version),
+ running("fw.app.bundle_id", ice_info_ddp_pkg_bundle_id),
+ combined("fw.netlist", ice_info_netlist_ver, ice_info_pending_netlist_ver),
+ combined("fw.netlist.build", ice_info_netlist_build, ice_info_pending_netlist_build),
+};
+
+/**
+ * ice_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 ice_devlink_info_get(struct devlink *devlink,
+ struct devlink_info_req *req,
+ struct netlink_ext_ack *extack)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+ struct device *dev = ice_pf_to_dev(pf);
+ struct ice_hw *hw = &pf->hw;
+ struct ice_info_ctx *ctx;
+ size_t i;
+ int err;
+
+ err = ice_wait_for_reset(pf, 10 * HZ);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Device is busy resetting");
+ return err;
+ }
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ /* discover capabilities first */
+ err = ice_discover_dev_caps(hw, &ctx->dev_caps);
+ if (err) {
+ dev_dbg(dev, "Failed to discover device capabilities, status %d aq_err %s\n",
+ err, ice_aq_str(hw->adminq.sq_last_status));
+ NL_SET_ERR_MSG_MOD(extack, "Unable to discover device capabilities");
+ goto out_free_ctx;
+ }
+
+ if (ctx->dev_caps.common_cap.nvm_update_pending_orom) {
+ err = ice_get_inactive_orom_ver(hw, &ctx->pending_orom);
+ if (err) {
+ dev_dbg(dev, "Unable to read inactive Option ROM version data, status %d aq_err %s\n",
+ err, ice_aq_str(hw->adminq.sq_last_status));
+
+ /* disable display of pending Option ROM */
+ ctx->dev_caps.common_cap.nvm_update_pending_orom = false;
+ }
+ }
+
+ if (ctx->dev_caps.common_cap.nvm_update_pending_nvm) {
+ err = ice_get_inactive_nvm_ver(hw, &ctx->pending_nvm);
+ if (err) {
+ dev_dbg(dev, "Unable to read inactive NVM version data, status %d aq_err %s\n",
+ err, ice_aq_str(hw->adminq.sq_last_status));
+
+ /* disable display of pending Option ROM */
+ ctx->dev_caps.common_cap.nvm_update_pending_nvm = false;
+ }
+ }
+
+ if (ctx->dev_caps.common_cap.nvm_update_pending_netlist) {
+ err = ice_get_inactive_netlist_ver(hw, &ctx->pending_netlist);
+ if (err) {
+ dev_dbg(dev, "Unable to read inactive Netlist version data, status %d aq_err %s\n",
+ err, ice_aq_str(hw->adminq.sq_last_status));
+
+ /* disable display of pending Option ROM */
+ ctx->dev_caps.common_cap.nvm_update_pending_netlist = false;
+ }
+ }
+
+ err = devlink_info_driver_name_put(req, KBUILD_MODNAME);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Unable to set driver name");
+ goto out_free_ctx;
+ }
+
+ ice_info_get_dsn(pf, ctx);
+
+ err = devlink_info_serial_number_put(req, ctx->buf);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Unable to set serial number");
+ goto out_free_ctx;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ice_devlink_versions); i++) {
+ enum ice_version_type type = ice_devlink_versions[i].type;
+ const char *key = ice_devlink_versions[i].key;
+
+ memset(ctx->buf, 0, sizeof(ctx->buf));
+
+ ice_devlink_versions[i].getter(pf, ctx);
+
+ /* If the default getter doesn't report a version, use the
+ * fallback function. This is primarily useful in the case of
+ * "stored" versions that want to report the same value as the
+ * running version in the normal case of no pending update.
+ */
+ if (ctx->buf[0] == '\0' && ice_devlink_versions[i].fallback)
+ ice_devlink_versions[i].fallback(pf, ctx);
+
+ /* Do not report missing versions */
+ if (ctx->buf[0] == '\0')
+ continue;
+
+ switch (type) {
+ case ICE_VERSION_FIXED:
+ err = devlink_info_version_fixed_put(req, key, ctx->buf);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Unable to set fixed version");
+ goto out_free_ctx;
+ }
+ break;
+ case ICE_VERSION_RUNNING:
+ err = devlink_info_version_running_put(req, key, ctx->buf);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Unable to set running version");
+ goto out_free_ctx;
+ }
+ break;
+ case ICE_VERSION_STORED:
+ err = devlink_info_version_stored_put(req, key, ctx->buf);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Unable to set stored version");
+ goto out_free_ctx;
+ }
+ break;
+ }
+ }
+
+out_free_ctx:
+ kfree(ctx);
+ return err;
+}
+
+/**
+ * ice_devlink_reload_empr_start - Start EMP reset to activate new firmware
+ * @devlink: pointer to the devlink instance to reload
+ * @netns_change: if true, the network namespace is changing
+ * @action: the action to perform. Must be DEVLINK_RELOAD_ACTION_FW_ACTIVATE
+ * @limit: limits on what reload should do, such as not resetting
+ * @extack: netlink extended ACK structure
+ *
+ * Allow user to activate new Embedded Management Processor firmware by
+ * issuing device specific EMP reset. Called in response to
+ * a DEVLINK_CMD_RELOAD with the DEVLINK_RELOAD_ACTION_FW_ACTIVATE.
+ *
+ * Note that teardown and rebuild of the driver state happens automatically as
+ * part of an interrupt and watchdog task. This is because all physical
+ * functions on the device must be able to reset when an EMP reset occurs from
+ * any source.
+ */
+static int
+ice_devlink_reload_empr_start(struct devlink *devlink, bool netns_change,
+ enum devlink_reload_action action,
+ enum devlink_reload_limit limit,
+ struct netlink_ext_ack *extack)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+ struct device *dev = ice_pf_to_dev(pf);
+ struct ice_hw *hw = &pf->hw;
+ u8 pending;
+ int err;
+
+ err = ice_get_pending_updates(pf, &pending, extack);
+ if (err)
+ return err;
+
+ /* pending is a bitmask of which flash banks have a pending update,
+ * including the main NVM bank, the Option ROM bank, and the netlist
+ * bank. If any of these bits are set, then there is a pending update
+ * waiting to be activated.
+ */
+ if (!pending) {
+ NL_SET_ERR_MSG_MOD(extack, "No pending firmware update");
+ return -ECANCELED;
+ }
+
+ if (pf->fw_emp_reset_disabled) {
+ NL_SET_ERR_MSG_MOD(extack, "EMP reset is not available. To activate firmware, a reboot or power cycle is needed");
+ return -ECANCELED;
+ }
+
+ dev_dbg(dev, "Issuing device EMP reset to activate firmware\n");
+
+ err = ice_aq_nvm_update_empr(hw);
+ if (err) {
+ dev_err(dev, "Failed to trigger EMP device reset to reload firmware, err %d aq_err %s\n",
+ err, ice_aq_str(hw->adminq.sq_last_status));
+ NL_SET_ERR_MSG_MOD(extack, "Failed to trigger EMP device reset to reload firmware");
+ return err;
+ }
+
+ return 0;
+}
+
+/**
+ * ice_devlink_reload_empr_finish - Wait for EMP reset to finish
+ * @devlink: pointer to the devlink instance reloading
+ * @action: the action requested
+ * @limit: limits imposed by userspace, such as not resetting
+ * @actions_performed: on return, indicate what actions actually performed
+ * @extack: netlink extended ACK structure
+ *
+ * Wait for driver to finish rebuilding after EMP reset is completed. This
+ * includes time to wait for both the actual device reset as well as the time
+ * for the driver's rebuild to complete.
+ */
+static int
+ice_devlink_reload_empr_finish(struct devlink *devlink,
+ enum devlink_reload_action action,
+ enum devlink_reload_limit limit,
+ u32 *actions_performed,
+ struct netlink_ext_ack *extack)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+ int err;
+
+ *actions_performed = BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE);
+
+ err = ice_wait_for_reset(pf, 60 * HZ);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Device still resetting after 1 minute");
+ return err;
+ }
+
+ return 0;
+}
+
+/**
+ * ice_devlink_port_opt_speed_str - convert speed to a string
+ * @speed: speed value
+ */
+static const char *ice_devlink_port_opt_speed_str(u8 speed)
+{
+ switch (speed & ICE_AQC_PORT_OPT_MAX_LANE_M) {
+ case ICE_AQC_PORT_OPT_MAX_LANE_100M:
+ return "0.1";
+ case ICE_AQC_PORT_OPT_MAX_LANE_1G:
+ return "1";
+ case ICE_AQC_PORT_OPT_MAX_LANE_2500M:
+ return "2.5";
+ case ICE_AQC_PORT_OPT_MAX_LANE_5G:
+ return "5";
+ case ICE_AQC_PORT_OPT_MAX_LANE_10G:
+ return "10";
+ case ICE_AQC_PORT_OPT_MAX_LANE_25G:
+ return "25";
+ case ICE_AQC_PORT_OPT_MAX_LANE_50G:
+ return "50";
+ case ICE_AQC_PORT_OPT_MAX_LANE_100G:
+ return "100";
+ }
+
+ return "-";
+}
+
+#define ICE_PORT_OPT_DESC_LEN 50
+/**
+ * ice_devlink_port_options_print - Print available port split options
+ * @pf: the PF to print split port options
+ *
+ * Prints a table with available port split options and max port speeds
+ */
+static void ice_devlink_port_options_print(struct ice_pf *pf)
+{
+ u8 i, j, options_count, cnt, speed, pending_idx, active_idx;
+ struct ice_aqc_get_port_options_elem *options, *opt;
+ struct device *dev = ice_pf_to_dev(pf);
+ bool active_valid, pending_valid;
+ char desc[ICE_PORT_OPT_DESC_LEN];
+ const char *str;
+ int status;
+
+ options = kcalloc(ICE_AQC_PORT_OPT_MAX * ICE_MAX_PORT_PER_PCI_DEV,
+ sizeof(*options), GFP_KERNEL);
+ if (!options)
+ return;
+
+ for (i = 0; i < ICE_MAX_PORT_PER_PCI_DEV; i++) {
+ opt = options + i * ICE_AQC_PORT_OPT_MAX;
+ options_count = ICE_AQC_PORT_OPT_MAX;
+ active_valid = 0;
+
+ status = ice_aq_get_port_options(&pf->hw, opt, &options_count,
+ i, true, &active_idx,
+ &active_valid, &pending_idx,
+ &pending_valid);
+ if (status) {
+ dev_dbg(dev, "Couldn't read port option for port %d, err %d\n",
+ i, status);
+ goto err;
+ }
+ }
+
+ dev_dbg(dev, "Available port split options and max port speeds (Gbps):\n");
+ dev_dbg(dev, "Status Split Quad 0 Quad 1\n");
+ dev_dbg(dev, " count L0 L1 L2 L3 L4 L5 L6 L7\n");
+
+ for (i = 0; i < options_count; i++) {
+ cnt = 0;
+
+ if (i == ice_active_port_option)
+ str = "Active";
+ else if ((i == pending_idx) && pending_valid)
+ str = "Pending";
+ else
+ str = "";
+
+ cnt += snprintf(&desc[cnt], ICE_PORT_OPT_DESC_LEN - cnt,
+ "%-8s", str);
+
+ cnt += snprintf(&desc[cnt], ICE_PORT_OPT_DESC_LEN - cnt,
+ "%-6u", options[i].pmd);
+
+ for (j = 0; j < ICE_MAX_PORT_PER_PCI_DEV; ++j) {
+ speed = options[i + j * ICE_AQC_PORT_OPT_MAX].max_lane_speed;
+ str = ice_devlink_port_opt_speed_str(speed);
+ cnt += snprintf(&desc[cnt], ICE_PORT_OPT_DESC_LEN - cnt,
+ "%3s ", str);
+ }
+
+ dev_dbg(dev, "%s\n", desc);
+ }
+
+err:
+ kfree(options);
+}
+
+/**
+ * ice_devlink_aq_set_port_option - Send set port option admin queue command
+ * @pf: the PF to print split port options
+ * @option_idx: selected port option
+ * @extack: extended netdev ack structure
+ *
+ * Sends set port option admin queue command with selected port option and
+ * calls NVM write activate.
+ */
+static int
+ice_devlink_aq_set_port_option(struct ice_pf *pf, u8 option_idx,
+ struct netlink_ext_ack *extack)
+{
+ struct device *dev = ice_pf_to_dev(pf);
+ int status;
+
+ status = ice_aq_set_port_option(&pf->hw, 0, true, option_idx);
+ if (status) {
+ dev_dbg(dev, "ice_aq_set_port_option, err %d aq_err %d\n",
+ status, pf->hw.adminq.sq_last_status);
+ NL_SET_ERR_MSG_MOD(extack, "Port split request failed");
+ return -EIO;
+ }
+
+ status = ice_acquire_nvm(&pf->hw, ICE_RES_WRITE);
+ if (status) {
+ dev_dbg(dev, "ice_acquire_nvm failed, err %d aq_err %d\n",
+ status, pf->hw.adminq.sq_last_status);
+ NL_SET_ERR_MSG_MOD(extack, "Failed to acquire NVM semaphore");
+ return -EIO;
+ }
+
+ status = ice_nvm_write_activate(&pf->hw, ICE_AQC_NVM_ACTIV_REQ_EMPR, NULL);
+ if (status) {
+ dev_dbg(dev, "ice_nvm_write_activate failed, err %d aq_err %d\n",
+ status, pf->hw.adminq.sq_last_status);
+ NL_SET_ERR_MSG_MOD(extack, "Port split request failed to save data");
+ ice_release_nvm(&pf->hw);
+ return -EIO;
+ }
+
+ ice_release_nvm(&pf->hw);
+
+ NL_SET_ERR_MSG_MOD(extack, "Reboot required to finish port split");
+ return 0;
+}
+
+/**
+ * ice_devlink_port_split - .port_split devlink handler
+ * @devlink: devlink instance structure
+ * @port: devlink port structure
+ * @count: number of ports to split to
+ * @extack: extended netdev ack structure
+ *
+ * Callback for the devlink .port_split operation.
+ *
+ * Unfortunately, the devlink expression of available options is limited
+ * to just a number, so search for an FW port option which supports
+ * the specified number. As there could be multiple FW port options with
+ * the same port split count, allow switching between them. When the same
+ * port split count request is issued again, switch to the next FW port
+ * option with the same port split count.
+ *
+ * Return: zero on success or an error code on failure.
+ */
+static int
+ice_devlink_port_split(struct devlink *devlink, struct devlink_port *port,
+ unsigned int count, struct netlink_ext_ack *extack)
+{
+ struct ice_aqc_get_port_options_elem options[ICE_AQC_PORT_OPT_MAX];
+ u8 i, j, active_idx, pending_idx, new_option;
+ struct ice_pf *pf = devlink_priv(devlink);
+ u8 option_count = ICE_AQC_PORT_OPT_MAX;
+ struct device *dev = ice_pf_to_dev(pf);
+ bool active_valid, pending_valid;
+ int status;
+
+ status = ice_aq_get_port_options(&pf->hw, options, &option_count,
+ 0, true, &active_idx, &active_valid,
+ &pending_idx, &pending_valid);
+ if (status) {
+ dev_dbg(dev, "Couldn't read port split options, err = %d\n",
+ status);
+ NL_SET_ERR_MSG_MOD(extack, "Failed to get available port split options");
+ return -EIO;
+ }
+
+ new_option = ICE_AQC_PORT_OPT_MAX;
+ active_idx = pending_valid ? pending_idx : active_idx;
+ for (i = 1; i <= option_count; i++) {
+ /* In order to allow switching between FW port options with
+ * the same port split count, search for a new option starting
+ * from the active/pending option (with array wrap around).
+ */
+ j = (active_idx + i) % option_count;
+
+ if (count == options[j].pmd) {
+ new_option = j;
+ break;
+ }
+ }
+
+ if (new_option == active_idx) {
+ dev_dbg(dev, "request to split: count: %u is already set and there are no other options\n",
+ count);
+ NL_SET_ERR_MSG_MOD(extack, "Requested split count is already set");
+ ice_devlink_port_options_print(pf);
+ return -EINVAL;
+ }
+
+ if (new_option == ICE_AQC_PORT_OPT_MAX) {
+ dev_dbg(dev, "request to split: count: %u not found\n", count);
+ NL_SET_ERR_MSG_MOD(extack, "Port split requested unsupported port config");
+ ice_devlink_port_options_print(pf);
+ return -EINVAL;
+ }
+
+ status = ice_devlink_aq_set_port_option(pf, new_option, extack);
+ if (status)
+ return status;
+
+ ice_devlink_port_options_print(pf);
+
+ return 0;
+}
+
+/**
+ * ice_devlink_port_unsplit - .port_unsplit devlink handler
+ * @devlink: devlink instance structure
+ * @port: devlink port structure
+ * @extack: extended netdev ack structure
+ *
+ * Callback for the devlink .port_unsplit operation.
+ * Calls ice_devlink_port_split with split count set to 1.
+ * There could be no FW option available with split count 1.
+ *
+ * Return: zero on success or an error code on failure.
+ */
+static int
+ice_devlink_port_unsplit(struct devlink *devlink, struct devlink_port *port,
+ struct netlink_ext_ack *extack)
+{
+ return ice_devlink_port_split(devlink, port, 1, extack);
+}
+
+static const struct devlink_ops ice_devlink_ops = {
+ .supported_flash_update_params = DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK,
+ .reload_actions = BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE),
+ /* The ice driver currently does not support driver reinit */
+ .reload_down = ice_devlink_reload_empr_start,
+ .reload_up = ice_devlink_reload_empr_finish,
+ .port_split = ice_devlink_port_split,
+ .port_unsplit = ice_devlink_port_unsplit,
+ .eswitch_mode_get = ice_eswitch_mode_get,
+ .eswitch_mode_set = ice_eswitch_mode_set,
+ .info_get = ice_devlink_info_get,
+ .flash_update = ice_devlink_flash_update,
+};
+
+static int
+ice_devlink_enable_roce_get(struct devlink *devlink, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+
+ ctx->val.vbool = pf->rdma_mode & IIDC_RDMA_PROTOCOL_ROCEV2 ? true : false;
+
+ return 0;
+}
+
+static int
+ice_devlink_enable_roce_set(struct devlink *devlink, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+ bool roce_ena = ctx->val.vbool;
+ int ret;
+
+ if (!roce_ena) {
+ ice_unplug_aux_dev(pf);
+ pf->rdma_mode &= ~IIDC_RDMA_PROTOCOL_ROCEV2;
+ return 0;
+ }
+
+ pf->rdma_mode |= IIDC_RDMA_PROTOCOL_ROCEV2;
+ ret = ice_plug_aux_dev(pf);
+ if (ret)
+ pf->rdma_mode &= ~IIDC_RDMA_PROTOCOL_ROCEV2;
+
+ return ret;
+}
+
+static int
+ice_devlink_enable_roce_validate(struct devlink *devlink, u32 id,
+ union devlink_param_value val,
+ struct netlink_ext_ack *extack)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+
+ if (!test_bit(ICE_FLAG_RDMA_ENA, pf->flags))
+ return -EOPNOTSUPP;
+
+ if (pf->rdma_mode & IIDC_RDMA_PROTOCOL_IWARP) {
+ NL_SET_ERR_MSG_MOD(extack, "iWARP is currently enabled. This device cannot enable iWARP and RoCEv2 simultaneously");
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int
+ice_devlink_enable_iw_get(struct devlink *devlink, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+
+ ctx->val.vbool = pf->rdma_mode & IIDC_RDMA_PROTOCOL_IWARP;
+
+ return 0;
+}
+
+static int
+ice_devlink_enable_iw_set(struct devlink *devlink, u32 id,
+ struct devlink_param_gset_ctx *ctx)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+ bool iw_ena = ctx->val.vbool;
+ int ret;
+
+ if (!iw_ena) {
+ ice_unplug_aux_dev(pf);
+ pf->rdma_mode &= ~IIDC_RDMA_PROTOCOL_IWARP;
+ return 0;
+ }
+
+ pf->rdma_mode |= IIDC_RDMA_PROTOCOL_IWARP;
+ ret = ice_plug_aux_dev(pf);
+ if (ret)
+ pf->rdma_mode &= ~IIDC_RDMA_PROTOCOL_IWARP;
+
+ return ret;
+}
+
+static int
+ice_devlink_enable_iw_validate(struct devlink *devlink, u32 id,
+ union devlink_param_value val,
+ struct netlink_ext_ack *extack)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+
+ if (!test_bit(ICE_FLAG_RDMA_ENA, pf->flags))
+ return -EOPNOTSUPP;
+
+ if (pf->rdma_mode & IIDC_RDMA_PROTOCOL_ROCEV2) {
+ NL_SET_ERR_MSG_MOD(extack, "RoCEv2 is currently enabled. This device cannot enable iWARP and RoCEv2 simultaneously");
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static const struct devlink_param ice_devlink_params[] = {
+ DEVLINK_PARAM_GENERIC(ENABLE_ROCE, BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+ ice_devlink_enable_roce_get,
+ ice_devlink_enable_roce_set,
+ ice_devlink_enable_roce_validate),
+ DEVLINK_PARAM_GENERIC(ENABLE_IWARP, BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+ ice_devlink_enable_iw_get,
+ ice_devlink_enable_iw_set,
+ ice_devlink_enable_iw_validate),
+
+};
+
+static void ice_devlink_free(void *devlink_ptr)
+{
+ devlink_free((struct devlink *)devlink_ptr);
+}
+
+/**
+ * ice_allocate_pf - Allocate devlink and return PF structure pointer
+ * @dev: the device to allocate for
+ *
+ * Allocate a devlink instance for this device and return the private area as
+ * the PF structure. The devlink memory is kept track of through devres by
+ * adding an action to remove it when unwinding.
+ */
+struct ice_pf *ice_allocate_pf(struct device *dev)
+{
+ struct devlink *devlink;
+
+ devlink = devlink_alloc(&ice_devlink_ops, sizeof(struct ice_pf), dev);
+ if (!devlink)
+ return NULL;
+
+ /* Add an action to teardown the devlink when unwinding the driver */
+ if (devm_add_action_or_reset(dev, ice_devlink_free, devlink))
+ return NULL;
+
+ return devlink_priv(devlink);
+}
+
+/**
+ * ice_devlink_register - Register devlink interface for this PF
+ * @pf: the PF to register the devlink for.
+ *
+ * Register the devlink instance associated with this physical function.
+ *
+ * Return: zero on success or an error code on failure.
+ */
+void ice_devlink_register(struct ice_pf *pf)
+{
+ struct devlink *devlink = priv_to_devlink(pf);
+
+ devlink_set_features(devlink, DEVLINK_F_RELOAD);
+ devlink_register(devlink);
+}
+
+/**
+ * ice_devlink_unregister - Unregister devlink resources for this PF.
+ * @pf: the PF structure to cleanup
+ *
+ * Releases resources used by devlink and cleans up associated memory.
+ */
+void ice_devlink_unregister(struct ice_pf *pf)
+{
+ devlink_unregister(priv_to_devlink(pf));
+}
+
+/**
+ * ice_devlink_set_switch_id - Set unique switch id based on pci dsn
+ * @pf: the PF to create a devlink port for
+ * @ppid: struct with switch id information
+ */
+static void
+ice_devlink_set_switch_id(struct ice_pf *pf, struct netdev_phys_item_id *ppid)
+{
+ struct pci_dev *pdev = pf->pdev;
+ u64 id;
+
+ id = pci_get_dsn(pdev);
+
+ ppid->id_len = sizeof(id);
+ put_unaligned_be64(id, &ppid->id);
+}
+
+int ice_devlink_register_params(struct ice_pf *pf)
+{
+ struct devlink *devlink = priv_to_devlink(pf);
+ union devlink_param_value value;
+ int err;
+
+ err = devlink_params_register(devlink, ice_devlink_params,
+ ARRAY_SIZE(ice_devlink_params));
+ if (err)
+ return err;
+
+ value.vbool = false;
+ devlink_param_driverinit_value_set(devlink,
+ DEVLINK_PARAM_GENERIC_ID_ENABLE_IWARP,
+ value);
+
+ value.vbool = test_bit(ICE_FLAG_RDMA_ENA, pf->flags) ? true : false;
+ devlink_param_driverinit_value_set(devlink,
+ DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
+ value);
+
+ return 0;
+}
+
+void ice_devlink_unregister_params(struct ice_pf *pf)
+{
+ devlink_params_unregister(priv_to_devlink(pf), ice_devlink_params,
+ ARRAY_SIZE(ice_devlink_params));
+}
+
+/**
+ * ice_devlink_set_port_split_options - Set port split options
+ * @pf: the PF to set port split options
+ * @attrs: devlink attributes
+ *
+ * Sets devlink port split options based on available FW port options
+ */
+static void
+ice_devlink_set_port_split_options(struct ice_pf *pf,
+ struct devlink_port_attrs *attrs)
+{
+ struct ice_aqc_get_port_options_elem options[ICE_AQC_PORT_OPT_MAX];
+ u8 i, active_idx, pending_idx, option_count = ICE_AQC_PORT_OPT_MAX;
+ bool active_valid, pending_valid;
+ int status;
+
+ status = ice_aq_get_port_options(&pf->hw, options, &option_count,
+ 0, true, &active_idx, &active_valid,
+ &pending_idx, &pending_valid);
+ if (status) {
+ dev_dbg(ice_pf_to_dev(pf), "Couldn't read port split options, err = %d\n",
+ status);
+ return;
+ }
+
+ /* find the biggest available port split count */
+ for (i = 0; i < option_count; i++)
+ attrs->lanes = max_t(int, attrs->lanes, options[i].pmd);
+
+ attrs->splittable = attrs->lanes ? 1 : 0;
+ ice_active_port_option = active_idx;
+}
+
+/**
+ * ice_devlink_create_pf_port - Create a devlink port for this PF
+ * @pf: the PF to create a devlink port for
+ *
+ * Create and register a devlink_port for this PF.
+ *
+ * Return: zero on success or an error code on failure.
+ */
+int ice_devlink_create_pf_port(struct ice_pf *pf)
+{
+ struct devlink_port_attrs attrs = {};
+ struct devlink_port *devlink_port;
+ struct devlink *devlink;
+ struct ice_vsi *vsi;
+ struct device *dev;
+ int err;
+
+ dev = ice_pf_to_dev(pf);
+
+ devlink_port = &pf->devlink_port;
+
+ vsi = ice_get_main_vsi(pf);
+ if (!vsi)
+ return -EIO;
+
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
+ attrs.phys.port_number = pf->hw.bus.func;
+
+ /* As FW supports only port split options for whole device,
+ * set port split options only for first PF.
+ */
+ if (pf->hw.pf_id == 0)
+ ice_devlink_set_port_split_options(pf, &attrs);
+
+ ice_devlink_set_switch_id(pf, &attrs.switch_id);
+
+ devlink_port_attrs_set(devlink_port, &attrs);
+ devlink = priv_to_devlink(pf);
+
+ err = devlink_port_register(devlink, devlink_port, vsi->idx);
+ if (err) {
+ dev_err(dev, "Failed to create devlink port for PF %d, error %d\n",
+ pf->hw.pf_id, err);
+ return err;
+ }
+
+ return 0;
+}
+
+/**
+ * ice_devlink_destroy_pf_port - Destroy the devlink_port for this PF
+ * @pf: the PF to cleanup
+ *
+ * Unregisters the devlink_port structure associated with this PF.
+ */
+void ice_devlink_destroy_pf_port(struct ice_pf *pf)
+{
+ struct devlink_port *devlink_port;
+
+ devlink_port = &pf->devlink_port;
+
+ devlink_port_type_clear(devlink_port);
+ devlink_port_unregister(devlink_port);
+}
+
+/**
+ * ice_devlink_create_vf_port - Create a devlink port for this VF
+ * @vf: the VF to create a port for
+ *
+ * Create and register a devlink_port for this VF.
+ *
+ * Return: zero on success or an error code on failure.
+ */
+int ice_devlink_create_vf_port(struct ice_vf *vf)
+{
+ struct devlink_port_attrs attrs = {};
+ struct devlink_port *devlink_port;
+ struct devlink *devlink;
+ struct ice_vsi *vsi;
+ struct device *dev;
+ struct ice_pf *pf;
+ int err;
+
+ pf = vf->pf;
+ dev = ice_pf_to_dev(pf);
+ devlink_port = &vf->devlink_port;
+
+ vsi = ice_get_vf_vsi(vf);
+ if (!vsi)
+ return -EINVAL;
+
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_VF;
+ attrs.pci_vf.pf = pf->hw.bus.func;
+ attrs.pci_vf.vf = vf->vf_id;
+
+ ice_devlink_set_switch_id(pf, &attrs.switch_id);
+
+ devlink_port_attrs_set(devlink_port, &attrs);
+ devlink = priv_to_devlink(pf);
+
+ err = devlink_port_register(devlink, devlink_port, vsi->idx);
+ if (err) {
+ dev_err(dev, "Failed to create devlink port for VF %d, error %d\n",
+ vf->vf_id, err);
+ return err;
+ }
+
+ return 0;
+}
+
+/**
+ * ice_devlink_destroy_vf_port - Destroy the devlink_port for this VF
+ * @vf: the VF to cleanup
+ *
+ * Unregisters the devlink_port structure associated with this VF.
+ */
+void ice_devlink_destroy_vf_port(struct ice_vf *vf)
+{
+ struct devlink_port *devlink_port;
+
+ devlink_port = &vf->devlink_port;
+
+ devlink_port_type_clear(devlink_port);
+ devlink_port_unregister(devlink_port);
+}
+
+#define ICE_DEVLINK_READ_BLK_SIZE (1024 * 1024)
+
+/**
+ * ice_devlink_nvm_snapshot - Capture a snapshot of the NVM flash contents
+ * @devlink: the devlink instance
+ * @ops: the devlink region being snapshotted
+ * @extack: extended ACK response structure
+ * @data: on exit points to snapshot data buffer
+ *
+ * This function is called in response to the DEVLINK_CMD_REGION_TRIGGER for
+ * the nvm-flash devlink region. It captures a snapshot of the full NVM flash
+ * contents, including both banks of flash. This snapshot can later be viewed
+ * via the devlink-region interface.
+ *
+ * It captures the flash using the FLASH_ONLY bit set when reading via
+ * firmware, so it does not read the current Shadow RAM contents. For that,
+ * use the shadow-ram region.
+ *
+ * @returns zero on success, and updates the data pointer. Returns a non-zero
+ * error code on failure.
+ */
+static int ice_devlink_nvm_snapshot(struct devlink *devlink,
+ const struct devlink_region_ops *ops,
+ struct netlink_ext_ack *extack, u8 **data)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+ struct device *dev = ice_pf_to_dev(pf);
+ struct ice_hw *hw = &pf->hw;
+ u8 *nvm_data, *tmp, i;
+ u32 nvm_size, left;
+ s8 num_blks;
+ int status;
+
+ nvm_size = hw->flash.flash_size;
+ nvm_data = vzalloc(nvm_size);
+ if (!nvm_data)
+ return -ENOMEM;
+
+
+ num_blks = DIV_ROUND_UP(nvm_size, ICE_DEVLINK_READ_BLK_SIZE);
+ tmp = nvm_data;
+ left = nvm_size;
+
+ /* Some systems take longer to read the NVM than others which causes the
+ * FW to reclaim the NVM lock before the entire NVM has been read. Fix
+ * this by breaking the reads of the NVM into smaller chunks that will
+ * probably not take as long. This has some overhead since we are
+ * increasing the number of AQ commands, but it should always work
+ */
+ for (i = 0; i < num_blks; i++) {
+ u32 read_sz = min_t(u32, ICE_DEVLINK_READ_BLK_SIZE, left);
+
+ status = ice_acquire_nvm(hw, ICE_RES_READ);
+ if (status) {
+ dev_dbg(dev, "ice_acquire_nvm failed, err %d aq_err %d\n",
+ status, hw->adminq.sq_last_status);
+ NL_SET_ERR_MSG_MOD(extack, "Failed to acquire NVM semaphore");
+ vfree(nvm_data);
+ return -EIO;
+ }
+
+ status = ice_read_flat_nvm(hw, i * ICE_DEVLINK_READ_BLK_SIZE,
+ &read_sz, tmp, false);
+ if (status) {
+ dev_dbg(dev, "ice_read_flat_nvm failed after reading %u bytes, err %d aq_err %d\n",
+ read_sz, status, hw->adminq.sq_last_status);
+ NL_SET_ERR_MSG_MOD(extack, "Failed to read NVM contents");
+ ice_release_nvm(hw);
+ vfree(nvm_data);
+ return -EIO;
+ }
+ ice_release_nvm(hw);
+
+ tmp += read_sz;
+ left -= read_sz;
+ }
+
+ *data = nvm_data;
+
+ return 0;
+}
+
+/**
+ * ice_devlink_sram_snapshot - Capture a snapshot of the Shadow RAM contents
+ * @devlink: the devlink instance
+ * @ops: the devlink region being snapshotted
+ * @extack: extended ACK response structure
+ * @data: on exit points to snapshot data buffer
+ *
+ * This function is called in response to the DEVLINK_CMD_REGION_TRIGGER for
+ * the shadow-ram devlink region. It captures a snapshot of the shadow ram
+ * contents. This snapshot can later be viewed via the devlink-region
+ * interface.
+ *
+ * @returns zero on success, and updates the data pointer. Returns a non-zero
+ * error code on failure.
+ */
+static int
+ice_devlink_sram_snapshot(struct devlink *devlink,
+ const struct devlink_region_ops __always_unused *ops,
+ struct netlink_ext_ack *extack, u8 **data)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+ struct device *dev = ice_pf_to_dev(pf);
+ struct ice_hw *hw = &pf->hw;
+ u8 *sram_data;
+ u32 sram_size;
+ int err;
+
+ sram_size = hw->flash.sr_words * 2u;
+ sram_data = vzalloc(sram_size);
+ if (!sram_data)
+ return -ENOMEM;
+
+ err = ice_acquire_nvm(hw, ICE_RES_READ);
+ if (err) {
+ dev_dbg(dev, "ice_acquire_nvm failed, err %d aq_err %d\n",
+ err, hw->adminq.sq_last_status);
+ NL_SET_ERR_MSG_MOD(extack, "Failed to acquire NVM semaphore");
+ vfree(sram_data);
+ return err;
+ }
+
+ /* Read from the Shadow RAM, rather than directly from NVM */
+ err = ice_read_flat_nvm(hw, 0, &sram_size, sram_data, true);
+ if (err) {
+ dev_dbg(dev, "ice_read_flat_nvm failed after reading %u bytes, err %d aq_err %d\n",
+ sram_size, err, hw->adminq.sq_last_status);
+ NL_SET_ERR_MSG_MOD(extack,
+ "Failed to read Shadow RAM contents");
+ ice_release_nvm(hw);
+ vfree(sram_data);
+ return err;
+ }
+
+ ice_release_nvm(hw);
+
+ *data = sram_data;
+
+ return 0;
+}
+
+/**
+ * ice_devlink_devcaps_snapshot - Capture snapshot of device capabilities
+ * @devlink: the devlink instance
+ * @ops: the devlink region being snapshotted
+ * @extack: extended ACK response structure
+ * @data: on exit points to snapshot data buffer
+ *
+ * This function is called in response to the DEVLINK_CMD_REGION_TRIGGER for
+ * the device-caps devlink region. It captures a snapshot of the device
+ * capabilities reported by firmware.
+ *
+ * @returns zero on success, and updates the data pointer. Returns a non-zero
+ * error code on failure.
+ */
+static int
+ice_devlink_devcaps_snapshot(struct devlink *devlink,
+ const struct devlink_region_ops *ops,
+ struct netlink_ext_ack *extack, u8 **data)
+{
+ struct ice_pf *pf = devlink_priv(devlink);
+ struct device *dev = ice_pf_to_dev(pf);
+ struct ice_hw *hw = &pf->hw;
+ void *devcaps;
+ int status;
+
+ devcaps = vzalloc(ICE_AQ_MAX_BUF_LEN);
+ if (!devcaps)
+ return -ENOMEM;
+
+ status = ice_aq_list_caps(hw, devcaps, ICE_AQ_MAX_BUF_LEN, NULL,
+ ice_aqc_opc_list_dev_caps, NULL);
+ if (status) {
+ dev_dbg(dev, "ice_aq_list_caps: failed to read device capabilities, err %d aq_err %d\n",
+ status, hw->adminq.sq_last_status);
+ NL_SET_ERR_MSG_MOD(extack, "Failed to read device capabilities");
+ vfree(devcaps);
+ return status;
+ }
+
+ *data = (u8 *)devcaps;
+
+ return 0;
+}
+
+static const struct devlink_region_ops ice_nvm_region_ops = {
+ .name = "nvm-flash",
+ .destructor = vfree,
+ .snapshot = ice_devlink_nvm_snapshot,
+};
+
+static const struct devlink_region_ops ice_sram_region_ops = {
+ .name = "shadow-ram",
+ .destructor = vfree,
+ .snapshot = ice_devlink_sram_snapshot,
+};
+
+static const struct devlink_region_ops ice_devcaps_region_ops = {
+ .name = "device-caps",
+ .destructor = vfree,
+ .snapshot = ice_devlink_devcaps_snapshot,
+};
+
+/**
+ * ice_devlink_init_regions - Initialize devlink regions
+ * @pf: the PF device structure
+ *
+ * Create devlink regions used to enable access to dump the contents of the
+ * flash memory on the device.
+ */
+void ice_devlink_init_regions(struct ice_pf *pf)
+{
+ struct devlink *devlink = priv_to_devlink(pf);
+ struct device *dev = ice_pf_to_dev(pf);
+ u64 nvm_size, sram_size;
+
+ nvm_size = pf->hw.flash.flash_size;
+ pf->nvm_region = devlink_region_create(devlink, &ice_nvm_region_ops, 1,
+ nvm_size);
+ if (IS_ERR(pf->nvm_region)) {
+ dev_err(dev, "failed to create NVM devlink region, err %ld\n",
+ PTR_ERR(pf->nvm_region));
+ pf->nvm_region = NULL;
+ }
+
+ sram_size = pf->hw.flash.sr_words * 2u;
+ pf->sram_region = devlink_region_create(devlink, &ice_sram_region_ops,
+ 1, sram_size);
+ if (IS_ERR(pf->sram_region)) {
+ dev_err(dev, "failed to create shadow-ram devlink region, err %ld\n",
+ PTR_ERR(pf->sram_region));
+ pf->sram_region = NULL;
+ }
+
+ pf->devcaps_region = devlink_region_create(devlink,
+ &ice_devcaps_region_ops, 10,
+ ICE_AQ_MAX_BUF_LEN);
+ if (IS_ERR(pf->devcaps_region)) {
+ dev_err(dev, "failed to create device-caps devlink region, err %ld\n",
+ PTR_ERR(pf->devcaps_region));
+ pf->devcaps_region = NULL;
+ }
+}
+
+/**
+ * ice_devlink_destroy_regions - Destroy devlink regions
+ * @pf: the PF device structure
+ *
+ * Remove previously created regions for this PF.
+ */
+void ice_devlink_destroy_regions(struct ice_pf *pf)
+{
+ if (pf->nvm_region)
+ devlink_region_destroy(pf->nvm_region);
+
+ if (pf->sram_region)
+ devlink_region_destroy(pf->sram_region);
+
+ if (pf->devcaps_region)
+ devlink_region_destroy(pf->devcaps_region);
+}