// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020, Intel Corporation. */
#include <linux/vmalloc.h>
#include "ice.h"
#include "ice_lib.h"
#include "devlink.h"
#include "port.h"
#include "ice_eswitch.h"
#include "ice_fw_update.h"
#include "ice_dcb_lib.h"
#include "ice_sf_eth.h"
/* 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 & 0 xFFFF,
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 & 0 xFFFF,
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);
}
static void ice_info_cgu_fw_build(struct ice_pf *pf, struct ice_info_ctx *ctx)
{
u32 id, cfg_ver, fw_ver;
if (!ice_is_feature_supported(pf, ICE_F_CGU))
return ;
if (ice_aq_get_cgu_info(&pf->hw, &id, &cfg_ver, &fw_ver))
return ;
snprintf(ctx->buf, sizeof (ctx->buf), "%u.%u.%u" , id, cfg_ver, fw_ver);
}
static void ice_info_cgu_id(struct ice_pf *pf, struct ice_info_ctx *ctx)
{
if (!ice_is_feature_supported(pf, ICE_F_CGU))
return ;
snprintf(ctx->buf, sizeof (ctx->buf), "%u" , pf->hw.cgu_part_number);
}
#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),
fixed("cgu.id" , ice_info_cgu_id),
running("fw.cgu" , ice_info_cgu_fw_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, libie_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, libie_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, libie_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, libie_aq_str(hw->adminq.sq_last_status));
/* disable display of pending Option ROM */
ctx->dev_caps.common_cap.nvm_update_pending_netlist = false ;
}
}
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_ext(req, key,
ctx->buf,
DEVLINK_INFO_VERSION_TYPE_COMPONENT);
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_ext(req, key,
ctx->buf,
DEVLINK_INFO_VERSION_TYPE_COMPONENT);
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
* @ pf : pointer to the pf instance
* @ 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 ice_pf *pf,
struct netlink_ext_ack *extack)
{
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, libie_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_reinit_down - unload given PF
* @ pf : pointer to the PF struct
*/
static void ice_devlink_reinit_down(struct ice_pf *pf)
{
/* No need to take devl_lock, it's already taken by devlink API */
ice_unload(pf);
rtnl_lock();
ice_vsi_decfg(ice_get_main_vsi(pf));
rtnl_unlock();
ice_deinit_dev(pf);
}
/**
* ice_devlink_reload_down - prepare for reload
* @ devlink : pointer to the devlink instance to reload
* @ netns_change : if true , the network namespace is changing
* @ action : the action to perform
* @ limit : limits on what reload should do , such as not resetting
* @ extack : netlink extended ACK structure
*/
static int
ice_devlink_reload_down(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);
switch (action) {
case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:
if (ice_is_eswitch_mode_switchdev(pf)) {
NL_SET_ERR_MSG_MOD(extack,
"Go to legacy mode before doing reinit" );
return -EOPNOTSUPP;
}
if (ice_is_adq_active(pf)) {
NL_SET_ERR_MSG_MOD(extack,
"Turn off ADQ before doing reinit" );
return -EOPNOTSUPP;
}
if (ice_has_vfs(pf)) {
NL_SET_ERR_MSG_MOD(extack,
"Remove all VFs before doing reinit" );
return -EOPNOTSUPP;
}
ice_devlink_reinit_down(pf);
return 0 ;
case DEVLINK_RELOAD_ACTION_FW_ACTIVATE:
return ice_devlink_reload_empr_start(pf, extack);
default :
WARN_ON(1 );
return -EOPNOTSUPP;
}
}
/**
* ice_devlink_reload_empr_finish - Wait for EMP reset to finish
* @ pf : pointer to the pf instance
* @ 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 ice_pf *pf,
struct netlink_ext_ack *extack)
{
int err;
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_get_tx_topo_user_sel - Read user ' s choice from flash
* @ pf : pointer to pf structure
* @ layers : value read from flash will be saved here
*
* Reads user ' s preference for Tx Scheduler Topology Tree from PFA TLV .
*
* Return : zero when read was successful , negative values otherwise .
*/
static int ice_get_tx_topo_user_sel(struct ice_pf *pf, uint8_t *layers)
{
struct ice_aqc_nvm_tx_topo_user_sel usr_sel = {};
struct ice_hw *hw = &pf->hw;
int err;
err = ice_acquire_nvm(hw, ICE_RES_READ);
if (err)
return err;
err = ice_aq_read_nvm(hw, ICE_AQC_NVM_TX_TOPO_MOD_ID, 0 ,
sizeof (usr_sel), &usr_sel, true , true , NULL);
if (err)
goto exit_release_res;
if (usr_sel.data & ICE_AQC_NVM_TX_TOPO_USER_SEL)
*layers = ICE_SCHED_5_LAYERS;
else
*layers = ICE_SCHED_9_LAYERS;
exit_release_res:
ice_release_nvm(hw);
return err;
}
/**
* ice_update_tx_topo_user_sel - Save user ' s preference in flash
* @ pf : pointer to pf structure
* @ layers : value to be saved in flash
*
* Variable " layers " defines user ' s preference about number of layers in Tx
* Scheduler Topology Tree . This choice should be stored in PFA TLV field
* and be picked up by driver , next time during init .
*
* Return : zero when save was successful , negative values otherwise .
*/
static int ice_update_tx_topo_user_sel(struct ice_pf *pf, int layers)
{
struct ice_aqc_nvm_tx_topo_user_sel usr_sel = {};
struct ice_hw *hw = &pf->hw;
int err;
err = ice_acquire_nvm(hw, ICE_RES_WRITE);
if (err)
return err;
err = ice_aq_read_nvm(hw, ICE_AQC_NVM_TX_TOPO_MOD_ID, 0 ,
sizeof (usr_sel), &usr_sel, true , true , NULL);
if (err)
goto exit_release_res;
if (layers == ICE_SCHED_5_LAYERS)
usr_sel.data |= ICE_AQC_NVM_TX_TOPO_USER_SEL;
else
usr_sel.data &= ~ICE_AQC_NVM_TX_TOPO_USER_SEL;
err = ice_write_one_nvm_block(pf, ICE_AQC_NVM_TX_TOPO_MOD_ID, 2 ,
sizeof (usr_sel.data), &usr_sel.data,
true , NULL, NULL);
exit_release_res:
ice_release_nvm(hw);
return err;
}
/**
* ice_devlink_tx_sched_layers_get - Get tx_scheduling_layers parameter
* @ devlink : pointer to the devlink instance
* @ id : the parameter ID to set
* @ ctx : context to store the parameter value
*
* Return : zero on success and negative value on failure .
*/
static int ice_devlink_tx_sched_layers_get(struct devlink *devlink, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct ice_pf *pf = devlink_priv(devlink);
int err;
err = ice_get_tx_topo_user_sel(pf, &ctx->val.vu8);
if (err)
return err;
return 0 ;
}
/**
* ice_devlink_tx_sched_layers_set - Set tx_scheduling_layers parameter
* @ devlink : pointer to the devlink instance
* @ id : the parameter ID to set
* @ ctx : context to get the parameter value
* @ extack : netlink extended ACK structure
*
* Return : zero on success and negative value on failure .
*/
static int ice_devlink_tx_sched_layers_set(struct devlink *devlink, u32 id,
struct devlink_param_gset_ctx *ctx,
struct netlink_ext_ack *extack)
{
struct ice_pf *pf = devlink_priv(devlink);
int err;
err = ice_update_tx_topo_user_sel(pf, ctx->val.vu8);
if (err)
return err;
NL_SET_ERR_MSG_MOD(extack,
"Tx scheduling layers have been changed on this device. You must do the PCI slot powercycle for the change to take effect." );
return 0 ;
}
/**
* ice_devlink_tx_sched_layers_validate - Validate passed tx_scheduling_layers
* parameter value
* @ devlink : unused pointer to devlink instance
* @ id : the parameter ID to validate
* @ val : value to validate
* @ extack : netlink extended ACK structure
*
* Supported values are :
* - 5 - five layers Tx Scheduler Topology Tree
* - 9 - nine layers Tx Scheduler Topology Tree
*
* Return : zero when passed parameter value is supported . Negative value on
* error .
*/
static int ice_devlink_tx_sched_layers_validate(struct devlink *devlink, u32 id,
union devlink_param_value val,
struct netlink_ext_ack *extack)
{
if (val.vu8 != ICE_SCHED_5_LAYERS && val.vu8 != ICE_SCHED_9_LAYERS) {
NL_SET_ERR_MSG_MOD(extack,
"Wrong number of tx scheduler layers provided." );
return -EINVAL;
}
return 0 ;
}
/**
* ice_tear_down_devlink_rate_tree - removes devlink - rate exported tree
* @ pf : pf struct
*
* This function tears down tree exported during VF ' s creation .
*/
void ice_tear_down_devlink_rate_tree(struct ice_pf *pf)
{
struct devlink *devlink;
struct ice_vf *vf;
unsigned int bkt;
devlink = priv_to_devlink(pf);
devl_lock(devlink);
mutex_lock(&pf->vfs.table_lock);
ice_for_each_vf(pf, bkt, vf) {
if (vf->devlink_port.devlink_rate)
devl_rate_leaf_destroy(&vf->devlink_port);
}
mutex_unlock(&pf->vfs.table_lock);
devl_rate_nodes_destroy(devlink);
devl_unlock(devlink);
}
/**
* ice_enable_custom_tx - try to enable custom Tx feature
* @ pf : pf struct
*
* This function tries to enable custom Tx feature ,
* it ' s not possible to enable it , if DCB or ADQ is active .
*/
static bool ice_enable_custom_tx(struct ice_pf *pf)
{
struct ice_port_info *pi = ice_get_main_vsi(pf)->port_info;
struct device *dev = ice_pf_to_dev(pf);
if (pi->is_custom_tx_enabled)
/* already enabled, return true */
return true ;
if (ice_is_adq_active(pf)) {
dev_err(dev, "ADQ active, can't modify Tx scheduler tree\n" );
return false ;
}
if (ice_is_dcb_active(pf)) {
dev_err(dev, "DCB active, can't modify Tx scheduler tree\n" );
return false ;
}
pi->is_custom_tx_enabled = true ;
return true ;
}
/**
* ice_traverse_tx_tree - traverse Tx scheduler tree
* @ devlink : devlink struct
* @ node : current node , used for recursion
* @ tc_node : tc_node struct , that is treated as a root
* @ pf : pf struct
*
* This function traverses Tx scheduler tree and exports
* entire structure to the devlink - rate .
*/
static void ice_traverse_tx_tree(struct devlink *devlink, struct ice_sched_node *node,
struct ice_sched_node *tc_node, struct ice_pf *pf)
{
struct devlink_rate *rate_node = NULL;
struct ice_dynamic_port *sf;
struct ice_vf *vf;
int i;
if (node->rate_node)
/* already added, skip to the next */
goto traverse_children;
if (node->parent == tc_node) {
/* create root node */
rate_node = devl_rate_node_create(devlink, node, node->name, NULL);
} else if (node->vsi_handle &&
pf->vsi[node->vsi_handle]->type == ICE_VSI_VF &&
pf->vsi[node->vsi_handle]->vf) {
vf = pf->vsi[node->vsi_handle]->vf;
if (!vf->devlink_port.devlink_rate)
/* leaf nodes doesn't have children
* so we don ' t set rate_node
*/
devl_rate_leaf_create(&vf->devlink_port, node,
node->parent->rate_node);
} else if (node->vsi_handle &&
pf->vsi[node->vsi_handle]->type == ICE_VSI_SF &&
pf->vsi[node->vsi_handle]->sf) {
sf = pf->vsi[node->vsi_handle]->sf;
if (!sf->devlink_port.devlink_rate)
/* leaf nodes doesn't have children
* so we don ' t set rate_node
*/
devl_rate_leaf_create(&sf->devlink_port, node,
node->parent->rate_node);
} else if (node->info.data.elem_type != ICE_AQC_ELEM_TYPE_LEAF &&
node->parent->rate_node) {
rate_node = devl_rate_node_create(devlink, node, node->name,
node->parent->rate_node);
}
if (rate_node && !IS_ERR(rate_node))
node->rate_node = rate_node;
traverse_children:
for (i = 0 ; i < node->num_children; i++)
ice_traverse_tx_tree(devlink, node->children[i], tc_node, pf);
}
/**
* ice_devlink_rate_init_tx_topology - export Tx scheduler tree to devlink rate
* @ devlink : devlink struct
* @ vsi : main vsi struct
*
* This function finds a root node , then calls ice_traverse_tx tree , which
* traverses the tree and exports it ' s contents to devlink rate .
*/
int ice_devlink_rate_init_tx_topology(struct devlink *devlink, struct ice_vsi *vsi)
{
struct ice_port_info *pi = vsi->port_info;
struct ice_sched_node *tc_node;
struct ice_pf *pf = vsi->back;
int i;
tc_node = pi->root->children[0 ];
mutex_lock(&pi->sched_lock);
for (i = 0 ; i < tc_node->num_children; i++)
ice_traverse_tx_tree(devlink, tc_node->children[i], tc_node, pf);
mutex_unlock(&pi->sched_lock);
return 0 ;
}
static void ice_clear_rate_nodes(struct ice_sched_node *node)
{
node->rate_node = NULL;
for (int i = 0 ; i < node->num_children; i++)
ice_clear_rate_nodes(node->children[i]);
}
/**
* ice_devlink_rate_clear_tx_topology - clear node - > rate_node
* @ vsi : main vsi struct
*
* Clear rate_node to cleanup creation of Tx topology .
*
*/
void ice_devlink_rate_clear_tx_topology(struct ice_vsi *vsi)
{
struct ice_port_info *pi = vsi->port_info;
mutex_lock(&pi->sched_lock);
ice_clear_rate_nodes(pi->root->children[0 ]);
mutex_unlock(&pi->sched_lock);
}
/**
* ice_set_object_tx_share - sets node scheduling parameter
* @ pi : devlink struct instance
* @ node : node struct instance
* @ bw : bandwidth in bytes per second
* @ extack : extended netdev ack structure
*
* This function sets ICE_MIN_BW scheduling BW limit .
*/
static int ice_set_object_tx_share(struct ice_port_info *pi, struct ice_sched_node *node,
u64 bw, struct netlink_ext_ack *extack)
{
int status;
mutex_lock(&pi->sched_lock);
/* converts bytes per second to kilo bits per second */
node->tx_share = div_u64(bw, 125 );
status = ice_sched_set_node_bw_lmt(pi, node, ICE_MIN_BW, node->tx_share);
mutex_unlock(&pi->sched_lock);
if (status)
NL_SET_ERR_MSG_MOD(extack, "Can't set scheduling node tx_share" );
return status;
}
/**
* ice_set_object_tx_max - sets node scheduling parameter
* @ pi : devlink struct instance
* @ node : node struct instance
* @ bw : bandwidth in bytes per second
* @ extack : extended netdev ack structure
*
* This function sets ICE_MAX_BW scheduling BW limit .
*/
static int ice_set_object_tx_max(struct ice_port_info *pi, struct ice_sched_node *node,
u64 bw, struct netlink_ext_ack *extack)
{
int status;
mutex_lock(&pi->sched_lock);
/* converts bytes per second value to kilo bits per second */
node->tx_max = div_u64(bw, 125 );
status = ice_sched_set_node_bw_lmt(pi, node, ICE_MAX_BW, node->tx_max);
mutex_unlock(&pi->sched_lock);
if (status)
NL_SET_ERR_MSG_MOD(extack, "Can't set scheduling node tx_max" );
return status;
}
/**
* ice_set_object_tx_priority - sets node scheduling parameter
* @ pi : devlink struct instance
* @ node : node struct instance
* @ priority : value representing priority for strict priority arbitration
* @ extack : extended netdev ack structure
*
* This function sets priority of node among siblings .
*/
static int ice_set_object_tx_priority(struct ice_port_info *pi, struct ice_sched_node *node,
u32 priority, struct netlink_ext_ack *extack)
{
int status;
if (priority >= 8 ) {
NL_SET_ERR_MSG_MOD(extack, "Priority should be less than 8" );
return -EINVAL;
}
mutex_lock(&pi->sched_lock);
node->tx_priority = priority;
status = ice_sched_set_node_priority(pi, node, node->tx_priority);
mutex_unlock(&pi->sched_lock);
if (status)
NL_SET_ERR_MSG_MOD(extack, "Can't set scheduling node tx_priority" );
return status;
}
/**
* ice_set_object_tx_weight - sets node scheduling parameter
* @ pi : devlink struct instance
* @ node : node struct instance
* @ weight : value represeting relative weight for WFQ arbitration
* @ extack : extended netdev ack structure
*
* This function sets node weight for WFQ algorithm .
*/
static int ice_set_object_tx_weight(struct ice_port_info *pi, struct ice_sched_node *node,
u32 weight, struct netlink_ext_ack *extack)
{
int status;
if (weight > 200 || weight < 1 ) {
NL_SET_ERR_MSG_MOD(extack, "Weight must be between 1 and 200" );
return -EINVAL;
}
mutex_lock(&pi->sched_lock);
node->tx_weight = weight;
status = ice_sched_set_node_weight(pi, node, node->tx_weight);
mutex_unlock(&pi->sched_lock);
if (status)
NL_SET_ERR_MSG_MOD(extack, "Can't set scheduling node tx_weight" );
return status;
}
/**
* ice_get_pi_from_dev_rate - get port info from devlink_rate
* @ rate_node : devlink struct instance
*
* This function returns corresponding port_info struct of devlink_rate
*/
static struct ice_port_info *ice_get_pi_from_dev_rate(struct devlink_rate *rate_node)
{
struct ice_pf *pf = devlink_priv(rate_node->devlink);
return ice_get_main_vsi(pf)->port_info;
}
static int ice_devlink_rate_node_new(struct devlink_rate *rate_node, void **priv,
struct netlink_ext_ack *extack)
{
struct ice_sched_node *node;
struct ice_port_info *pi;
pi = ice_get_pi_from_dev_rate(rate_node);
if (!ice_enable_custom_tx(devlink_priv(rate_node->devlink)))
return -EBUSY;
/* preallocate memory for ice_sched_node */
node = devm_kzalloc(ice_hw_to_dev(pi->hw), sizeof (*node), GFP_KERNEL);
if (!node)
return -ENOMEM;
*priv = node;
return 0 ;
}
static int ice_devlink_rate_node_del(struct devlink_rate *rate_node, void *priv,
struct netlink_ext_ack *extack)
{
struct ice_sched_node *node, *tc_node;
struct ice_port_info *pi;
pi = ice_get_pi_from_dev_rate(rate_node);
tc_node = pi->root->children[0 ];
node = priv;
if (!rate_node->parent || !node || tc_node == node || !extack)
return 0 ;
if (!ice_enable_custom_tx(devlink_priv(rate_node->devlink)))
return -EBUSY;
/* can't allow to delete a node with children */
if (node->num_children)
return -EINVAL;
mutex_lock(&pi->sched_lock);
ice_free_sched_node(pi, node);
mutex_unlock(&pi->sched_lock);
return 0 ;
}
static int ice_devlink_rate_leaf_tx_max_set(struct devlink_rate *rate_leaf, void *priv,
u64 tx_max, struct netlink_ext_ack *extack)
{
struct ice_sched_node *node = priv;
if (!ice_enable_custom_tx(devlink_priv(rate_leaf->devlink)))
return -EBUSY;
if (!node)
return 0 ;
return ice_set_object_tx_max(ice_get_pi_from_dev_rate(rate_leaf),
node, tx_max, extack);
}
static int ice_devlink_rate_leaf_tx_share_set(struct devlink_rate *rate_leaf, void *priv,
u64 tx_share, struct netlink_ext_ack *extack)
{
struct ice_sched_node *node = priv;
if (!ice_enable_custom_tx(devlink_priv(rate_leaf->devlink)))
return -EBUSY;
if (!node)
return 0 ;
return ice_set_object_tx_share(ice_get_pi_from_dev_rate(rate_leaf), node,
tx_share, extack);
}
static int ice_devlink_rate_leaf_tx_priority_set(struct devlink_rate *rate_leaf, void *priv,
u32 tx_priority, struct netlink_ext_ack *extack)
{
struct ice_sched_node *node = priv;
if (!ice_enable_custom_tx(devlink_priv(rate_leaf->devlink)))
return -EBUSY;
if (!node)
return 0 ;
return ice_set_object_tx_priority(ice_get_pi_from_dev_rate(rate_leaf), node,
tx_priority, extack);
}
static int ice_devlink_rate_leaf_tx_weight_set(struct devlink_rate *rate_leaf, void *priv,
u32 tx_weight, struct netlink_ext_ack *extack)
{
struct ice_sched_node *node = priv;
if (!ice_enable_custom_tx(devlink_priv(rate_leaf->devlink)))
return -EBUSY;
if (!node)
return 0 ;
return ice_set_object_tx_weight(ice_get_pi_from_dev_rate(rate_leaf), node,
tx_weight, extack);
}
static int ice_devlink_rate_node_tx_max_set(struct devlink_rate *rate_node, void *priv,
u64 tx_max, struct netlink_ext_ack *extack)
{
struct ice_sched_node *node = priv;
if (!ice_enable_custom_tx(devlink_priv(rate_node->devlink)))
return -EBUSY;
if (!node)
return 0 ;
return ice_set_object_tx_max(ice_get_pi_from_dev_rate(rate_node),
node, tx_max, extack);
}
static int ice_devlink_rate_node_tx_share_set(struct devlink_rate *rate_node, void *priv,
u64 tx_share, struct netlink_ext_ack *extack)
{
struct ice_sched_node *node = priv;
if (!ice_enable_custom_tx(devlink_priv(rate_node->devlink)))
return -EBUSY;
if (!node)
return 0 ;
return ice_set_object_tx_share(ice_get_pi_from_dev_rate(rate_node),
node, tx_share, extack);
}
static int ice_devlink_rate_node_tx_priority_set(struct devlink_rate *rate_node, void *priv,
u32 tx_priority, struct netlink_ext_ack *extack)
{
struct ice_sched_node *node = priv;
if (!ice_enable_custom_tx(devlink_priv(rate_node->devlink)))
return -EBUSY;
if (!node)
return 0 ;
return ice_set_object_tx_priority(ice_get_pi_from_dev_rate(rate_node),
node, tx_priority, extack);
}
static int ice_devlink_rate_node_tx_weight_set(struct devlink_rate *rate_node, void *priv,
u32 tx_weight, struct netlink_ext_ack *extack)
{
struct ice_sched_node *node = priv;
if (!ice_enable_custom_tx(devlink_priv(rate_node->devlink)))
return -EBUSY;
if (!node)
return 0 ;
return ice_set_object_tx_weight(ice_get_pi_from_dev_rate(rate_node),
node, tx_weight, extack);
}
static int ice_devlink_set_parent(struct devlink_rate *devlink_rate,
struct devlink_rate *parent,
void *priv, void *parent_priv,
struct netlink_ext_ack *extack)
{
struct ice_port_info *pi = ice_get_pi_from_dev_rate(devlink_rate);
struct ice_sched_node *tc_node, *node, *parent_node;
u16 num_nodes_added;
u32 first_node_teid;
u32 node_teid;
int status;
tc_node = pi->root->children[0 ];
node = priv;
if (!extack)
return 0 ;
if (!ice_enable_custom_tx(devlink_priv(devlink_rate->devlink)))
return -EBUSY;
if (!parent) {
if (!node || tc_node == node || node->num_children)
return -EINVAL;
mutex_lock(&pi->sched_lock);
ice_free_sched_node(pi, node);
mutex_unlock(&pi->sched_lock);
return 0 ;
}
parent_node = parent_priv;
/* if the node doesn't exist, create it */
if (!node->parent) {
mutex_lock(&pi->sched_lock);
status = ice_sched_add_elems(pi, tc_node, parent_node,
parent_node->tx_sched_layer + 1 ,
1 , &num_nodes_added, &first_node_teid,
&node);
mutex_unlock(&pi->sched_lock);
if (status) {
NL_SET_ERR_MSG_MOD(extack, "Can't add a new node" );
return status;
}
if (devlink_rate->tx_share)
ice_set_object_tx_share(pi, node, devlink_rate->tx_share, extack);
if (devlink_rate->tx_max)
ice_set_object_tx_max(pi, node, devlink_rate->tx_max, extack);
if (devlink_rate->tx_priority)
ice_set_object_tx_priority(pi, node, devlink_rate->tx_priority, extack);
if (devlink_rate->tx_weight)
ice_set_object_tx_weight(pi, node, devlink_rate->tx_weight, extack);
} else {
node_teid = le32_to_cpu(node->info.node_teid);
mutex_lock(&pi->sched_lock);
status = ice_sched_move_nodes(pi, parent_node, 1 , &node_teid);
mutex_unlock(&pi->sched_lock);
if (status)
NL_SET_ERR_MSG_MOD(extack, "Can't move existing node to a new parent" );
}
return status;
}
static void ice_set_min_max_msix(struct ice_pf *pf)
{
struct devlink *devlink = priv_to_devlink(pf);
union devlink_param_value val;
int err;
err = devl_param_driverinit_value_get(devlink,
DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
&val);
if (!err)
pf->msix.min = val.vu32;
err = devl_param_driverinit_value_get(devlink,
DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
&val);
if (!err)
pf->msix.max = val.vu32;
}
/**
* ice_devlink_reinit_up - do reinit of the given PF
* @ pf : pointer to the PF struct
*/
static int ice_devlink_reinit_up(struct ice_pf *pf)
{
struct ice_vsi *vsi = ice_get_main_vsi(pf);
int err;
err = ice_init_hw(&pf->hw);
if (err) {
dev_err(ice_pf_to_dev(pf), "ice_init_hw failed: %d\n" , err);
return err;
}
/* load MSI-X values */
ice_set_min_max_msix(pf);
err = ice_init_dev(pf);
if (err)
goto unroll_hw_init;
vsi->flags = ICE_VSI_FLAG_INIT;
rtnl_lock();
err = ice_vsi_cfg(vsi);
rtnl_unlock();
if (err)
goto err_vsi_cfg;
/* No need to take devl_lock, it's already taken by devlink API */
err = ice_load(pf);
if (err)
goto err_load;
return 0 ;
err_load:
rtnl_lock();
ice_vsi_decfg(vsi);
rtnl_unlock();
err_vsi_cfg:
ice_deinit_dev(pf);
unroll_hw_init:
ice_deinit_hw(&pf->hw);
return err;
}
/**
* ice_devlink_reload_up - do reload up after reinit
* @ 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
*/
static int
ice_devlink_reload_up(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);
switch (action) {
case DEVLINK_RELOAD_ACTION_DRIVER_REINIT:
*actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT);
return ice_devlink_reinit_up(pf);
case DEVLINK_RELOAD_ACTION_FW_ACTIVATE:
*actions_performed = BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE);
return ice_devlink_reload_empr_finish(pf, extack);
default :
WARN_ON(1 );
return -EOPNOTSUPP;
}
}
static const struct devlink_ops ice_devlink_ops = {
.supported_flash_update_params = DEVLINK_SUPPORT_FLASH_UPDATE_OVERWRITE_MASK,
.reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT) |
BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE),
.reload_down = ice_devlink_reload_down,
.reload_up = ice_devlink_reload_up,
.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,
.rate_node_new = ice_devlink_rate_node_new,
.rate_node_del = ice_devlink_rate_node_del,
.rate_leaf_tx_max_set = ice_devlink_rate_leaf_tx_max_set,
.rate_leaf_tx_share_set = ice_devlink_rate_leaf_tx_share_set,
.rate_leaf_tx_priority_set = ice_devlink_rate_leaf_tx_priority_set,
.rate_leaf_tx_weight_set = ice_devlink_rate_leaf_tx_weight_set,
.rate_node_tx_max_set = ice_devlink_rate_node_tx_max_set,
.rate_node_tx_share_set = ice_devlink_rate_node_tx_share_set,
.rate_node_tx_priority_set = ice_devlink_rate_node_tx_priority_set,
.rate_node_tx_weight_set = ice_devlink_rate_node_tx_weight_set,
.rate_leaf_parent_set = ice_devlink_set_parent,
.rate_node_parent_set = ice_devlink_set_parent,
.port_new = ice_devlink_port_new,
};
static const struct devlink_ops ice_sf_devlink_ops;
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);
struct iidc_rdma_core_dev_info *cdev;
cdev = pf->cdev_info;
if (!cdev)
return -ENODEV;
ctx->val.vbool = !!(cdev->rdma_protocol & IIDC_RDMA_PROTOCOL_ROCEV2);
return 0 ;
}
static int ice_devlink_enable_roce_set(struct devlink *devlink, u32 id,
struct devlink_param_gset_ctx *ctx,
struct netlink_ext_ack *extack)
{
struct ice_pf *pf = devlink_priv(devlink);
struct iidc_rdma_core_dev_info *cdev;
bool roce_ena = ctx->val.vbool;
int ret;
cdev = pf->cdev_info;
if (!cdev)
return -ENODEV;
if (!roce_ena) {
ice_unplug_aux_dev(pf);
cdev->rdma_protocol &= ~IIDC_RDMA_PROTOCOL_ROCEV2;
return 0 ;
}
cdev->rdma_protocol |= IIDC_RDMA_PROTOCOL_ROCEV2;
ret = ice_plug_aux_dev(pf);
if (ret)
cdev->rdma_protocol &= ~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);
struct iidc_rdma_core_dev_info *cdev;
cdev = pf->cdev_info;
if (!cdev)
return -ENODEV;
if (!test_bit(ICE_FLAG_RDMA_ENA, pf->flags))
return -EOPNOTSUPP;
if (cdev->rdma_protocol & 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);
struct iidc_rdma_core_dev_info *cdev;
cdev = pf->cdev_info;
if (!cdev)
return -ENODEV;
ctx->val.vbool = !!(cdev->rdma_protocol & 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 netlink_ext_ack *extack)
{
struct ice_pf *pf = devlink_priv(devlink);
struct iidc_rdma_core_dev_info *cdev;
bool iw_ena = ctx->val.vbool;
int ret;
cdev = pf->cdev_info;
if (!cdev)
return -ENODEV;
if (!iw_ena) {
ice_unplug_aux_dev(pf);
cdev->rdma_protocol &= ~IIDC_RDMA_PROTOCOL_IWARP;
return 0 ;
}
cdev->rdma_protocol |= IIDC_RDMA_PROTOCOL_IWARP;
ret = ice_plug_aux_dev(pf);
if (ret)
cdev->rdma_protocol &= ~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->cdev_info->rdma_protocol & 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 ;
}
#define DEVLINK_LOCAL_FWD_DISABLED_STR "disabled"
#define DEVLINK_LOCAL_FWD_ENABLED_STR "enabled"
#define DEVLINK_LOCAL_FWD_PRIORITIZED_STR "prioritized"
/**
* ice_devlink_local_fwd_mode_to_str - Get string for local_fwd mode .
* @ mode : local forwarding for mode used in port_info struct .
*
* Return : Mode respective string or " Invalid " .
*/
static const char *
ice_devlink_local_fwd_mode_to_str(enum ice_local_fwd_mode mode)
{
switch (mode) {
case ICE_LOCAL_FWD_MODE_ENABLED:
return DEVLINK_LOCAL_FWD_ENABLED_STR;
case ICE_LOCAL_FWD_MODE_PRIORITIZED:
return DEVLINK_LOCAL_FWD_PRIORITIZED_STR;
case ICE_LOCAL_FWD_MODE_DISABLED:
return DEVLINK_LOCAL_FWD_DISABLED_STR;
}
return "Invalid" ;
}
/**
* ice_devlink_local_fwd_str_to_mode - Get local_fwd mode from string name .
* @ mode_str : local forwarding mode string .
*
* Return : Mode value or negative number if invalid .
*/
static int ice_devlink_local_fwd_str_to_mode(const char *mode_str)
{
if (!strcmp(mode_str, DEVLINK_LOCAL_FWD_ENABLED_STR))
return ICE_LOCAL_FWD_MODE_ENABLED;
else if (!strcmp(mode_str, DEVLINK_LOCAL_FWD_PRIORITIZED_STR))
return ICE_LOCAL_FWD_MODE_PRIORITIZED;
else if (!strcmp(mode_str, DEVLINK_LOCAL_FWD_DISABLED_STR))
return ICE_LOCAL_FWD_MODE_DISABLED;
return -EINVAL;
}
/**
* ice_devlink_local_fwd_get - Get local_fwd parameter .
* @ devlink : Pointer to the devlink instance .
* @ id : The parameter ID to set .
* @ ctx : Context to store the parameter value .
*
* Return : Zero .
*/
static int ice_devlink_local_fwd_get(struct devlink *devlink, u32 id,
struct devlink_param_gset_ctx *ctx)
{
struct ice_pf *pf = devlink_priv(devlink);
struct ice_port_info *pi;
const char *mode_str;
pi = pf->hw.port_info;
mode_str = ice_devlink_local_fwd_mode_to_str(pi->local_fwd_mode);
snprintf(ctx->val.vstr, sizeof (ctx->val.vstr), "%s" , mode_str);
return 0 ;
}
/**
* ice_devlink_local_fwd_set - Set local_fwd parameter .
* @ devlink : Pointer to the devlink instance .
* @ id : The parameter ID to set .
* @ ctx : Context to get the parameter value .
* @ extack : Netlink extended ACK structure .
*
* Return : Zero .
*/
static int ice_devlink_local_fwd_set(struct devlink *devlink, u32 id,
struct devlink_param_gset_ctx *ctx,
struct netlink_ext_ack *extack)
{
int new_local_fwd_mode = ice_devlink_local_fwd_str_to_mode(ctx->val.vstr);
struct ice_pf *pf = devlink_priv(devlink);
struct device *dev = ice_pf_to_dev(pf);
struct ice_port_info *pi;
pi = pf->hw.port_info;
if (pi->local_fwd_mode != new_local_fwd_mode) {
pi->local_fwd_mode = new_local_fwd_mode;
dev_info(dev, "Setting local_fwd to %s\n" , ctx->val.vstr);
ice_schedule_reset(pf, ICE_RESET_CORER);
}
return 0 ;
}
/**
* ice_devlink_local_fwd_validate - Validate passed local_fwd parameter value .
* @ devlink : Unused pointer to devlink instance .
* @ id : The parameter ID to validate .
* @ val : Value to validate .
* @ extack : Netlink extended ACK structure .
*
* Supported values are :
* " enabled " - local_fwd is enabled , " disabled " - local_fwd is disabled
* " prioritized " - local_fwd traffic is prioritized in scheduling .
*
* Return : Zero when passed parameter value is supported . Negative value on
* error .
*/
static int ice_devlink_local_fwd_validate(struct devlink *devlink, u32 id,
union devlink_param_value val,
struct netlink_ext_ack *extack)
{
if (ice_devlink_local_fwd_str_to_mode(val.vstr) < 0 ) {
NL_SET_ERR_MSG_MOD(extack, "Error: Requested value is not supported." );
return -EINVAL;
}
return 0 ;
}
static int
ice_devlink_msix_max_pf_validate(struct devlink *devlink, u32 id,
union devlink_param_value val,
struct netlink_ext_ack *extack)
{
struct ice_pf *pf = devlink_priv(devlink);
if (val.vu32 > pf->hw.func_caps.common_cap.num_msix_vectors)
return -EINVAL;
return 0 ;
}
static int
ice_devlink_msix_min_pf_validate(struct devlink *devlink, u32 id,
union devlink_param_value val,
struct netlink_ext_ack *extack)
{
if (val.vu32 < ICE_MIN_MSIX)
return -EINVAL;
return 0 ;
}
static int ice_devlink_enable_rdma_validate(struct devlink *devlink, u32 id,
union devlink_param_value val,
struct netlink_ext_ack *extack)
{
struct ice_pf *pf = devlink_priv(devlink);
bool new_state = val.vbool;
if (new_state && !test_bit(ICE_FLAG_RDMA_ENA, pf->flags))
return -EOPNOTSUPP;
return 0 ;
}
enum ice_param_id {
ICE_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
ICE_DEVLINK_PARAM_ID_TX_SCHED_LAYERS,
ICE_DEVLINK_PARAM_ID_LOCAL_FWD,
};
static const struct devlink_param ice_dvl_rdma_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),
DEVLINK_PARAM_GENERIC(ENABLE_RDMA, BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
NULL, NULL, ice_devlink_enable_rdma_validate),
};
static const struct devlink_param ice_dvl_msix_params[] = {
DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MAX,
BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
NULL, NULL, ice_devlink_msix_max_pf_validate),
DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MIN,
BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
NULL, NULL, ice_devlink_msix_min_pf_validate),
};
static const struct devlink_param ice_dvl_sched_params[] = {
DEVLINK_PARAM_DRIVER(ICE_DEVLINK_PARAM_ID_TX_SCHED_LAYERS,
"tx_scheduling_layers" ,
DEVLINK_PARAM_TYPE_U8,
BIT(DEVLINK_PARAM_CMODE_PERMANENT),
ice_devlink_tx_sched_layers_get,
ice_devlink_tx_sched_layers_set,
ice_devlink_tx_sched_layers_validate),
DEVLINK_PARAM_DRIVER(ICE_DEVLINK_PARAM_ID_LOCAL_FWD,
"local_forwarding" , DEVLINK_PARAM_TYPE_STRING,
BIT(DEVLINK_PARAM_CMODE_RUNTIME),
ice_devlink_local_fwd_get,
ice_devlink_local_fwd_set,
ice_devlink_local_fwd_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_allocate_sf - Allocate devlink and return SF structure pointer
* @ dev : the device to allocate for
* @ pf : pointer to the PF structure
*
* Allocate a devlink instance for SF .
*
* Return : ice_sf_priv pointer to allocated memory or ERR_PTR in case of error
*/
struct ice_sf_priv *ice_allocate_sf(struct device *dev, struct ice_pf *pf)
{
struct devlink *devlink;
int err;
devlink = devlink_alloc(&ice_sf_devlink_ops, sizeof (struct ice_sf_priv),
dev);
if (!devlink)
return ERR_PTR(-ENOMEM);
err = devl_nested_devlink_set(priv_to_devlink(pf), devlink);
if (err) {
devlink_free(devlink);
return ERR_PTR(err);
}
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);
devl_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)
{
devl_unregister(priv_to_devlink(pf));
}
int ice_devlink_register_params(struct ice_pf *pf)
{
struct devlink *devlink = priv_to_devlink(pf);
union devlink_param_value value;
struct ice_hw *hw = &pf->hw;
int status;
status = devl_params_register(devlink, ice_dvl_rdma_params,
ARRAY_SIZE(ice_dvl_rdma_params));
if (status)
return status;
status = devl_params_register(devlink, ice_dvl_msix_params,
ARRAY_SIZE(ice_dvl_msix_params));
if (status)
goto unregister_rdma_params;
if (hw->func_caps.common_cap.tx_sched_topo_comp_mode_en)
status = devl_params_register(devlink, ice_dvl_sched_params,
ARRAY_SIZE(ice_dvl_sched_params));
if (status)
goto unregister_msix_params;
value.vu32 = pf->msix.max;
devl_param_driverinit_value_set(devlink,
DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
value);
value.vu32 = pf->msix.min;
devl_param_driverinit_value_set(devlink,
DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
value);
value.vbool = test_bit(ICE_FLAG_RDMA_ENA, pf->flags);
devl_param_driverinit_value_set(devlink,
DEVLINK_PARAM_GENERIC_ID_ENABLE_RDMA,
value);
return 0 ;
unregister_msix_params:
devl_params_unregister(devlink, ice_dvl_msix_params,
ARRAY_SIZE(ice_dvl_msix_params));
unregister_rdma_params:
devl_params_unregister(devlink, ice_dvl_rdma_params,
ARRAY_SIZE(ice_dvl_rdma_params));
return status;
}
void ice_devlink_unregister_params(struct ice_pf *pf)
{
struct devlink *devlink = priv_to_devlink(pf);
struct ice_hw *hw = &pf->hw;
devl_params_unregister(devlink, ice_dvl_rdma_params,
ARRAY_SIZE(ice_dvl_rdma_params));
devl_params_unregister(devlink, ice_dvl_msix_params,
ARRAY_SIZE(ice_dvl_msix_params));
if (hw->func_caps.common_cap.tx_sched_topo_comp_mode_en)
devl_params_unregister(devlink, ice_dvl_sched_params,
ARRAY_SIZE(ice_dvl_sched_params));
}
#define ICE_DEVLINK_READ_BLK_SIZE (1024 * 1024 )
static const struct devlink_region_ops ice_nvm_region_ops;
static const struct devlink_region_ops ice_sram_region_ops;
/**
* ice_devlink_nvm_snapshot - Capture a snapshot of the NVM flash contents
* @ devlink : the devlink instance
* @ ops : the devlink region to snapshot
* @ extack : extended ACK response structure
* @ data : on exit points to snapshot data buffer
*
* This function is called in response to a DEVLINK_CMD_REGION_NEW for either
* the nvm - flash or shadow - ram region .
*
* It captures a snapshot of the NVM or Shadow RAM flash contents . This
* snapshot can then later be viewed via the DEVLINK_CMD_REGION_READ netlink
* interface .
*
* @ 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;
bool read_shadow_ram;
u8 *nvm_data, *tmp, i;
u32 nvm_size, left;
s8 num_blks;
int status;
if (ops == &ice_nvm_region_ops) {
read_shadow_ram = false ;
nvm_size = hw->flash.flash_size;
} else if (ops == &ice_sram_region_ops) {
read_shadow_ram = true ;
nvm_size = hw->flash.sr_words * 2 u;
} else {
NL_SET_ERR_MSG_MOD(extack, "Unexpected region in snapshot function" );
return -EOPNOTSUPP;
}
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, read_shadow_ram);
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_nvm_read - Read a portion of NVM flash contents
* @ devlink : the devlink instance
* @ ops : the devlink region to snapshot
* @ extack : extended ACK response structure
* @ offset : the offset to start at
* @ size : the amount to read
* @ data : the data buffer to read into
*
* This function is called in response to DEVLINK_CMD_REGION_READ to directly
* read a section of the NVM contents .
*
* It reads from either the nvm - flash or shadow - ram region contents .
*
* @ returns zero on success , and updates the data pointer . Returns a non - zero
* error code on failure .
*/
static int ice_devlink_nvm_read(struct devlink *devlink,
const struct devlink_region_ops *ops,
struct netlink_ext_ack *extack,
u64 offset, u32 size, u8 *data)
{
struct ice_pf *pf = devlink_priv(devlink);
struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
bool read_shadow_ram;
u64 nvm_size;
int status;
if (ops == &ice_nvm_region_ops) {
read_shadow_ram = false ;
nvm_size = hw->flash.flash_size;
} else if (ops == &ice_sram_region_ops) {
read_shadow_ram = true ;
nvm_size = hw->flash.sr_words * 2 u;
} else {
NL_SET_ERR_MSG_MOD(extack, "Unexpected region in snapshot function" );
return -EOPNOTSUPP;
}
if (offset + size >= nvm_size) {
NL_SET_ERR_MSG_MOD(extack, "Cannot read beyond the region size" );
return -ERANGE;
}
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" );
return -EIO;
}
status = ice_read_flat_nvm(hw, (u32)offset, &size, data,
read_shadow_ram);
if (status) {
dev_dbg(dev, "ice_read_flat_nvm failed after reading %u bytes, err %d aq_err %d\n" ,
size, status, hw->adminq.sq_last_status);
NL_SET_ERR_MSG_MOD(extack, "Failed to read NVM contents" );
ice_release_nvm(hw);
return -EIO;
}
ice_release_nvm(hw);
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,
.read = ice_devlink_nvm_read,
};
static const struct devlink_region_ops ice_sram_region_ops = {
.name = "shadow-ram" ,
.destructor = vfree,
.snapshot = ice_devlink_nvm_snapshot,
.read = ice_devlink_nvm_read,
};
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 = devl_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 * 2 u;
pf->sram_region = devl_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 = devl_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)
devl_region_destroy(pf->nvm_region);
if (pf->sram_region)
devl_region_destroy(pf->sram_region);
if (pf->devcaps_region)
devl_region_destroy(pf->devcaps_region);
}
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