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android-kvm / linux / fe95f58320e6c8dcea3bcb01336b9a7fdd7f684b / . / drivers / net / ethernet / intel / i40e / i40e_dcb.c
blob: 8db1eb0c1768c9869d7bf09820b4324b91bf788c [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2013 - 2021 Intel Corporation. */
#include <linux/bitfield.h>
#include "i40e_adminq.h"
#include "i40e_alloc.h"
#include "i40e_dcb.h"
#include "i40e_prototype.h"
/**
* i40e_get_dcbx_status
* @hw: pointer to the hw struct
* @status: Embedded DCBX Engine Status
*
* Get the DCBX status from the Firmware
**/
int i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status)
{
u32 reg;
if (!status)
return -EINVAL;
reg = rd32(hw, I40E_PRTDCB_GENS);
*status = FIELD_GET(I40E_PRTDCB_GENS_DCBX_STATUS_MASK, reg);
return 0;
}
/**
* i40e_parse_ieee_etscfg_tlv
* @tlv: IEEE 802.1Qaz ETS CFG TLV
* @dcbcfg: Local store to update ETS CFG data
*
* Parses IEEE 802.1Qaz ETS CFG TLV
**/
static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
struct i40e_dcb_ets_config *etscfg;
u8 *buf = tlv->tlvinfo;
u16 offset = 0;
u8 priority;
int i;
/* First Octet post subtype
* --------------------------
* |will-|CBS | Re- | Max |
* |ing | |served| TCs |
* --------------------------
* |1bit | 1bit|3 bits|3bits|
*/
etscfg = &dcbcfg->etscfg;
etscfg->willing = FIELD_GET(I40E_IEEE_ETS_WILLING_MASK, buf[offset]);
etscfg->cbs = FIELD_GET(I40E_IEEE_ETS_CBS_MASK, buf[offset]);
etscfg->maxtcs = FIELD_GET(I40E_IEEE_ETS_MAXTC_MASK, buf[offset]);
/* Move offset to Priority Assignment Table */
offset++;
/* Priority Assignment Table (4 octets)
* Octets:| 1 | 2 | 3 | 4 |
* -----------------------------------------
* |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
* -----------------------------------------
* Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
* -----------------------------------------
*/
for (i = 0; i < 4; i++) {
priority = FIELD_GET(I40E_IEEE_ETS_PRIO_1_MASK, buf[offset]);
etscfg->prioritytable[i * 2] = priority;
priority = FIELD_GET(I40E_IEEE_ETS_PRIO_0_MASK, buf[offset]);
etscfg->prioritytable[i * 2 + 1] = priority;
offset++;
}
/* TC Bandwidth Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
etscfg->tcbwtable[i] = buf[offset++];
/* TSA Assignment Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
etscfg->tsatable[i] = buf[offset++];
}
/**
* i40e_parse_ieee_etsrec_tlv
* @tlv: IEEE 802.1Qaz ETS REC TLV
* @dcbcfg: Local store to update ETS REC data
*
* Parses IEEE 802.1Qaz ETS REC TLV
**/
static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
u16 offset = 0;
u8 priority;
int i;
/* Move offset to priority table */
offset++;
/* Priority Assignment Table (4 octets)
* Octets:| 1 | 2 | 3 | 4 |
* -----------------------------------------
* |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
* -----------------------------------------
* Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
* -----------------------------------------
*/
for (i = 0; i < 4; i++) {
priority = FIELD_GET(I40E_IEEE_ETS_PRIO_1_MASK, buf[offset]);
dcbcfg->etsrec.prioritytable[i * 2] = priority;
priority = FIELD_GET(I40E_IEEE_ETS_PRIO_0_MASK, buf[offset]);
dcbcfg->etsrec.prioritytable[(i * 2) + 1] = priority;
offset++;
}
/* TC Bandwidth Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
dcbcfg->etsrec.tcbwtable[i] = buf[offset++];
/* TSA Assignment Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
dcbcfg->etsrec.tsatable[i] = buf[offset++];
}
/**
* i40e_parse_ieee_pfccfg_tlv
* @tlv: IEEE 802.1Qaz PFC CFG TLV
* @dcbcfg: Local store to update PFC CFG data
*
* Parses IEEE 802.1Qaz PFC CFG TLV
**/
static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
/* ----------------------------------------
* |will-|MBC | Re- | PFC | PFC Enable |
* |ing | |served| cap | |
* -----------------------------------------
* |1bit | 1bit|2 bits|4bits| 1 octet |
*/
dcbcfg->pfc.willing = FIELD_GET(I40E_IEEE_PFC_WILLING_MASK, buf[0]);
dcbcfg->pfc.mbc = FIELD_GET(I40E_IEEE_PFC_MBC_MASK, buf[0]);
dcbcfg->pfc.pfccap = FIELD_GET(I40E_IEEE_PFC_CAP_MASK, buf[0]);
dcbcfg->pfc.pfcenable = buf[1];
}
/**
* i40e_parse_ieee_app_tlv
* @tlv: IEEE 802.1Qaz APP TLV
* @dcbcfg: Local store to update APP PRIO data
*
* Parses IEEE 802.1Qaz APP PRIO TLV
**/
static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u16 typelength;
u16 offset = 0;
u16 length;
int i = 0;
u8 *buf;
typelength = ntohs(tlv->typelength);
length = FIELD_GET(I40E_LLDP_TLV_LEN_MASK, typelength);
buf = tlv->tlvinfo;
/* The App priority table starts 5 octets after TLV header */
length -= (sizeof(tlv->ouisubtype) + 1);
/* Move offset to App Priority Table */
offset++;
/* Application Priority Table (3 octets)
* Octets:| 1 | 2 | 3 |
* -----------------------------------------
* |Priority|Rsrvd| Sel | Protocol ID |
* -----------------------------------------
* Bits:|23 21|20 19|18 16|15 0|
* -----------------------------------------
*/
while (offset < length) {
dcbcfg->app[i].priority = FIELD_GET(I40E_IEEE_APP_PRIO_MASK,
buf[offset]);
dcbcfg->app[i].selector = FIELD_GET(I40E_IEEE_APP_SEL_MASK,
buf[offset]);
dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) |
buf[offset + 2];
/* Move to next app */
offset += 3;
i++;
if (i >= I40E_DCBX_MAX_APPS)
break;
}
dcbcfg->numapps = i;
}
/**
* i40e_parse_ieee_tlv
* @tlv: IEEE 802.1Qaz TLV
* @dcbcfg: Local store to update ETS REC data
*
* Get the TLV subtype and send it to parsing function
* based on the subtype value
**/
static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u32 ouisubtype;
u8 subtype;
ouisubtype = ntohl(tlv->ouisubtype);
subtype = FIELD_GET(I40E_LLDP_TLV_SUBTYPE_MASK, ouisubtype);
switch (subtype) {
case I40E_IEEE_SUBTYPE_ETS_CFG:
i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg);
break;
case I40E_IEEE_SUBTYPE_ETS_REC:
i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg);
break;
case I40E_IEEE_SUBTYPE_PFC_CFG:
i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
break;
case I40E_IEEE_SUBTYPE_APP_PRI:
i40e_parse_ieee_app_tlv(tlv, dcbcfg);
break;
default:
break;
}
}
/**
* i40e_parse_cee_pgcfg_tlv
* @tlv: CEE DCBX PG CFG TLV
* @dcbcfg: Local store to update ETS CFG data
*
* Parses CEE DCBX PG CFG TLV
**/
static void i40e_parse_cee_pgcfg_tlv(struct i40e_cee_feat_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
struct i40e_dcb_ets_config *etscfg;
u8 *buf = tlv->tlvinfo;
u16 offset = 0;
u8 priority;
int i;
etscfg = &dcbcfg->etscfg;
if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
etscfg->willing = 1;
etscfg->cbs = 0;
/* Priority Group Table (4 octets)
* Octets:| 1 | 2 | 3 | 4 |
* -----------------------------------------
* |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
* -----------------------------------------
* Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
* -----------------------------------------
*/
for (i = 0; i < 4; i++) {
priority = FIELD_GET(I40E_CEE_PGID_PRIO_1_MASK, buf[offset]);
etscfg->prioritytable[i * 2] = priority;
priority = FIELD_GET(I40E_CEE_PGID_PRIO_0_MASK, buf[offset]);
etscfg->prioritytable[i * 2 + 1] = priority;
offset++;
}
/* PG Percentage Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
etscfg->tcbwtable[i] = buf[offset++];
/* Number of TCs supported (1 octet) */
etscfg->maxtcs = buf[offset];
}
/**
* i40e_parse_cee_pfccfg_tlv
* @tlv: CEE DCBX PFC CFG TLV
* @dcbcfg: Local store to update PFC CFG data
*
* Parses CEE DCBX PFC CFG TLV
**/
static void i40e_parse_cee_pfccfg_tlv(struct i40e_cee_feat_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
dcbcfg->pfc.willing = 1;
/* ------------------------
* | PFC Enable | PFC TCs |
* ------------------------
* | 1 octet | 1 octet |
*/
dcbcfg->pfc.pfcenable = buf[0];
dcbcfg->pfc.pfccap = buf[1];
}
/**
* i40e_parse_cee_app_tlv
* @tlv: CEE DCBX APP TLV
* @dcbcfg: Local store to update APP PRIO data
*
* Parses CEE DCBX APP PRIO TLV
**/
static void i40e_parse_cee_app_tlv(struct i40e_cee_feat_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u16 length, typelength, offset = 0;
struct i40e_cee_app_prio *app;
u8 i;
typelength = ntohs(tlv->hdr.typelen);
length = FIELD_GET(I40E_LLDP_TLV_LEN_MASK, typelength);
dcbcfg->numapps = length / sizeof(*app);
if (!dcbcfg->numapps)
return;
if (dcbcfg->numapps > I40E_DCBX_MAX_APPS)
dcbcfg->numapps = I40E_DCBX_MAX_APPS;
for (i = 0; i < dcbcfg->numapps; i++) {
u8 up, selector;
app = (struct i40e_cee_app_prio *)(tlv->tlvinfo + offset);
for (up = 0; up < I40E_MAX_USER_PRIORITY; up++) {
if (app->prio_map & BIT(up))
break;
}
dcbcfg->app[i].priority = up;
/* Get Selector from lower 2 bits, and convert to IEEE */
selector = (app->upper_oui_sel & I40E_CEE_APP_SELECTOR_MASK);
switch (selector) {
case I40E_CEE_APP_SEL_ETHTYPE:
dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
break;
case I40E_CEE_APP_SEL_TCPIP:
dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
break;
default:
/* Keep selector as it is for unknown types */
dcbcfg->app[i].selector = selector;
}
dcbcfg->app[i].protocolid = ntohs(app->protocol);
/* Move to next app */
offset += sizeof(*app);
}
}
/**
* i40e_parse_cee_tlv
* @tlv: CEE DCBX TLV
* @dcbcfg: Local store to update DCBX config data
*
* Get the TLV subtype and send it to parsing function
* based on the subtype value
**/
static void i40e_parse_cee_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u16 len, tlvlen, sublen, typelength;
struct i40e_cee_feat_tlv *sub_tlv;
u8 subtype, feat_tlv_count = 0;
u32 ouisubtype;
ouisubtype = ntohl(tlv->ouisubtype);
subtype = FIELD_GET(I40E_LLDP_TLV_SUBTYPE_MASK, ouisubtype);
/* Return if not CEE DCBX */
if (subtype != I40E_CEE_DCBX_TYPE)
return;
typelength = ntohs(tlv->typelength);
tlvlen = FIELD_GET(I40E_LLDP_TLV_LEN_MASK, typelength);
len = sizeof(tlv->typelength) + sizeof(ouisubtype) +
sizeof(struct i40e_cee_ctrl_tlv);
/* Return if no CEE DCBX Feature TLVs */
if (tlvlen <= len)
return;
sub_tlv = (struct i40e_cee_feat_tlv *)((char *)tlv + len);
while (feat_tlv_count < I40E_CEE_MAX_FEAT_TYPE) {
typelength = ntohs(sub_tlv->hdr.typelen);
sublen = FIELD_GET(I40E_LLDP_TLV_LEN_MASK, typelength);
subtype = FIELD_GET(I40E_LLDP_TLV_TYPE_MASK, typelength);
switch (subtype) {
case I40E_CEE_SUBTYPE_PG_CFG:
i40e_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
break;
case I40E_CEE_SUBTYPE_PFC_CFG:
i40e_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
break;
case I40E_CEE_SUBTYPE_APP_PRI:
i40e_parse_cee_app_tlv(sub_tlv, dcbcfg);
break;
default:
return; /* Invalid Sub-type return */
}
feat_tlv_count++;
/* Move to next sub TLV */
sub_tlv = (struct i40e_cee_feat_tlv *)((char *)sub_tlv +
sizeof(sub_tlv->hdr.typelen) +
sublen);
}
}
/**
* i40e_parse_org_tlv
* @tlv: Organization specific TLV
* @dcbcfg: Local store to update ETS REC data
*
* Currently only IEEE 802.1Qaz TLV is supported, all others
* will be returned
**/
static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u32 ouisubtype;
u32 oui;
ouisubtype = ntohl(tlv->ouisubtype);
oui = FIELD_GET(I40E_LLDP_TLV_OUI_MASK, ouisubtype);
switch (oui) {
case I40E_IEEE_8021QAZ_OUI:
i40e_parse_ieee_tlv(tlv, dcbcfg);
break;
case I40E_CEE_DCBX_OUI:
i40e_parse_cee_tlv(tlv, dcbcfg);
break;
default:
break;
}
}
/**
* i40e_lldp_to_dcb_config
* @lldpmib: LLDPDU to be parsed
* @dcbcfg: store for LLDPDU data
*
* Parse DCB configuration from the LLDPDU
**/
int i40e_lldp_to_dcb_config(u8 *lldpmib,
struct i40e_dcbx_config *dcbcfg)
{
struct i40e_lldp_org_tlv *tlv;
u16 typelength;
u16 offset = 0;
int ret = 0;
u16 length;
u16 type;
if (!lldpmib || !dcbcfg)
return -EINVAL;
/* set to the start of LLDPDU */
lldpmib += ETH_HLEN;
tlv = (struct i40e_lldp_org_tlv *)lldpmib;
while (1) {
typelength = ntohs(tlv->typelength);
type = FIELD_GET(I40E_LLDP_TLV_TYPE_MASK, typelength);
length = FIELD_GET(I40E_LLDP_TLV_LEN_MASK, typelength);
offset += sizeof(typelength) + length;
/* END TLV or beyond LLDPDU size */
if ((type == I40E_TLV_TYPE_END) || (offset > I40E_LLDPDU_SIZE))
break;
switch (type) {
case I40E_TLV_TYPE_ORG:
i40e_parse_org_tlv(tlv, dcbcfg);
break;
default:
break;
}
/* Move to next TLV */
tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
sizeof(tlv->typelength) +
length);
}
return ret;
}
/**
* i40e_aq_get_dcb_config
* @hw: pointer to the hw struct
* @mib_type: mib type for the query
* @bridgetype: bridge type for the query (remote)
* @dcbcfg: store for LLDPDU data
*
* Query DCB configuration from the Firmware
**/
int i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type,
u8 bridgetype,
struct i40e_dcbx_config *dcbcfg)
{
struct i40e_virt_mem mem;
int ret = 0;
u8 *lldpmib;
/* Allocate the LLDPDU */
ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
if (ret)
return ret;
lldpmib = (u8 *)mem.va;
ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type,
(void *)lldpmib, I40E_LLDPDU_SIZE,
NULL, NULL, NULL);
if (ret)
goto free_mem;
/* Parse LLDP MIB to get dcb configuration */
ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg);
free_mem:
i40e_free_virt_mem(hw, &mem);
return ret;
}
/**
* i40e_cee_to_dcb_v1_config
* @cee_cfg: pointer to CEE v1 response configuration struct
* @dcbcfg: DCB configuration struct
*
* Convert CEE v1 configuration from firmware to DCB configuration
**/
static void i40e_cee_to_dcb_v1_config(
struct i40e_aqc_get_cee_dcb_cfg_v1_resp *cee_cfg,
struct i40e_dcbx_config *dcbcfg)
{
u16 status, tlv_status = le16_to_cpu(cee_cfg->tlv_status);
u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
u8 i, err;
/* CEE PG data to ETS config */
dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
/* Note that the FW creates the oper_prio_tc nibbles reversed
* from those in the CEE Priority Group sub-TLV.
*/
for (i = 0; i < 4; i++) {
u8 tc;
tc = FIELD_GET(I40E_CEE_PGID_PRIO_0_MASK,
cee_cfg->oper_prio_tc[i]);
dcbcfg->etscfg.prioritytable[i * 2] = tc;
tc = FIELD_GET(I40E_CEE_PGID_PRIO_1_MASK,
cee_cfg->oper_prio_tc[i]);
dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
}
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
/* Map it to next empty TC */
dcbcfg->etscfg.prioritytable[i] =
cee_cfg->oper_num_tc - 1;
dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
} else {
dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
}
}
/* CEE PFC data to ETS config */
dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
status = FIELD_GET(I40E_AQC_CEE_APP_STATUS_MASK, tlv_status);
err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
/* Add APPs if Error is False */
if (!err) {
/* CEE operating configuration supports FCoE/iSCSI/FIP only */
dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
/* FCoE APP */
dcbcfg->app[0].priority =
FIELD_GET(I40E_AQC_CEE_APP_FCOE_MASK, app_prio);
dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
/* iSCSI APP */
dcbcfg->app[1].priority =
FIELD_GET(I40E_AQC_CEE_APP_ISCSI_MASK, app_prio);
dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
/* FIP APP */
dcbcfg->app[2].priority =
FIELD_GET(I40E_AQC_CEE_APP_FIP_MASK, app_prio);
dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
}
}
/**
* i40e_cee_to_dcb_config
* @cee_cfg: pointer to CEE configuration struct
* @dcbcfg: DCB configuration struct
*
* Convert CEE configuration from firmware to DCB configuration
**/
static void i40e_cee_to_dcb_config(
struct i40e_aqc_get_cee_dcb_cfg_resp *cee_cfg,
struct i40e_dcbx_config *dcbcfg)
{
u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
u8 i, err, sync, oper;
/* CEE PG data to ETS config */
dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
/* Note that the FW creates the oper_prio_tc nibbles reversed
* from those in the CEE Priority Group sub-TLV.
*/
for (i = 0; i < 4; i++) {
u8 tc;
tc = FIELD_GET(I40E_CEE_PGID_PRIO_0_MASK,
cee_cfg->oper_prio_tc[i]);
dcbcfg->etscfg.prioritytable[i * 2] = tc;
tc = FIELD_GET(I40E_CEE_PGID_PRIO_1_MASK,
cee_cfg->oper_prio_tc[i]);
dcbcfg->etscfg.prioritytable[i * 2 + 1] = tc;
}
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
/* Map it to next empty TC */
dcbcfg->etscfg.prioritytable[i] =
cee_cfg->oper_num_tc - 1;
dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
} else {
dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
}
}
/* CEE PFC data to ETS config */
dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
i = 0;
status = FIELD_GET(I40E_AQC_CEE_FCOE_STATUS_MASK, tlv_status);
err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
/* Add FCoE APP if Error is False and Oper/Sync is True */
if (!err && sync && oper) {
/* FCoE APP */
dcbcfg->app[i].priority =
FIELD_GET(I40E_AQC_CEE_APP_FCOE_MASK, app_prio);
dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FCOE;
i++;
}
status = FIELD_GET(I40E_AQC_CEE_ISCSI_STATUS_MASK, tlv_status);
err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
/* Add iSCSI APP if Error is False and Oper/Sync is True */
if (!err && sync && oper) {
/* iSCSI APP */
dcbcfg->app[i].priority =
FIELD_GET(I40E_AQC_CEE_APP_ISCSI_MASK, app_prio);
dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
dcbcfg->app[i].protocolid = I40E_APP_PROTOID_ISCSI;
i++;
}
status = FIELD_GET(I40E_AQC_CEE_FIP_STATUS_MASK, tlv_status);
err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
/* Add FIP APP if Error is False and Oper/Sync is True */
if (!err && sync && oper) {
/* FIP APP */
dcbcfg->app[i].priority =
FIELD_GET(I40E_AQC_CEE_APP_FIP_MASK, app_prio);
dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FIP;
i++;
}
dcbcfg->numapps = i;
}
/**
* i40e_get_ieee_dcb_config
* @hw: pointer to the hw struct
*
* Get IEEE mode DCB configuration from the Firmware
**/
static int i40e_get_ieee_dcb_config(struct i40e_hw *hw)
{
int ret = 0;
/* IEEE mode */
hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_IEEE;
/* Get Local DCB Config */
ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
&hw->local_dcbx_config);
if (ret)
goto out;
/* Get Remote DCB Config */
ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
&hw->remote_dcbx_config);
/* Don't treat ENOENT as an error for Remote MIBs */
if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
ret = 0;
out:
return ret;
}
/**
* i40e_get_dcb_config
* @hw: pointer to the hw struct
*
* Get DCB configuration from the Firmware
**/
int i40e_get_dcb_config(struct i40e_hw *hw)
{
struct i40e_aqc_get_cee_dcb_cfg_v1_resp cee_v1_cfg;
struct i40e_aqc_get_cee_dcb_cfg_resp cee_cfg;
int ret = 0;
/* If Firmware version < v4.33 on X710/XL710, IEEE only */
if (hw->mac.type == I40E_MAC_XL710 && i40e_is_fw_ver_lt(hw, 4, 33))
return i40e_get_ieee_dcb_config(hw);
/* If Firmware version == v4.33 on X710/XL710, use old CEE struct */
if (hw->mac.type == I40E_MAC_XL710 && i40e_is_fw_ver_eq(hw, 4, 33)) {
ret = i40e_aq_get_cee_dcb_config(hw, &cee_v1_cfg,
sizeof(cee_v1_cfg), NULL);
if (!ret) {
/* CEE mode */
hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
hw->local_dcbx_config.tlv_status =
le16_to_cpu(cee_v1_cfg.tlv_status);
i40e_cee_to_dcb_v1_config(&cee_v1_cfg,
&hw->local_dcbx_config);
}
} else {
ret = i40e_aq_get_cee_dcb_config(hw, &cee_cfg,
sizeof(cee_cfg), NULL);
if (!ret) {
/* CEE mode */
hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
hw->local_dcbx_config.tlv_status =
le32_to_cpu(cee_cfg.tlv_status);
i40e_cee_to_dcb_config(&cee_cfg,
&hw->local_dcbx_config);
}
}
/* CEE mode not enabled try querying IEEE data */
if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
return i40e_get_ieee_dcb_config(hw);
if (ret)
goto out;
/* Get CEE DCB Desired Config */
ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
&hw->desired_dcbx_config);
if (ret)
goto out;
/* Get Remote DCB Config */
ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
&hw->remote_dcbx_config);
/* Don't treat ENOENT as an error for Remote MIBs */
if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
ret = 0;
out:
return ret;
}
/**
* i40e_init_dcb
* @hw: pointer to the hw struct
* @enable_mib_change: enable mib change event
*
* Update DCB configuration from the Firmware
**/
int i40e_init_dcb(struct i40e_hw *hw, bool enable_mib_change)
{
struct i40e_lldp_variables lldp_cfg;
u8 adminstatus = 0;
int ret = 0;
if (!hw->func_caps.dcb)
return -EOPNOTSUPP;
/* Read LLDP NVM area */
if (test_bit(I40E_HW_CAP_FW_LLDP_PERSISTENT, hw->caps)) {
u8 offset = 0;
if (hw->mac.type == I40E_MAC_XL710)
offset = I40E_LLDP_CURRENT_STATUS_XL710_OFFSET;
else if (hw->mac.type == I40E_MAC_X722)
offset = I40E_LLDP_CURRENT_STATUS_X722_OFFSET;
else
return -EOPNOTSUPP;
ret = i40e_read_nvm_module_data(hw,
I40E_SR_EMP_SR_SETTINGS_PTR,
offset,
I40E_LLDP_CURRENT_STATUS_OFFSET,
I40E_LLDP_CURRENT_STATUS_SIZE,
&lldp_cfg.adminstatus);
} else {
ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
}
if (ret)
return -EBUSY;
/* Get the LLDP AdminStatus for the current port */
adminstatus = lldp_cfg.adminstatus >> (hw->port * 4);
adminstatus &= 0xF;
/* LLDP agent disabled */
if (!adminstatus) {
hw->dcbx_status = I40E_DCBX_STATUS_DISABLED;
return -EBUSY;
}
/* Get DCBX status */
ret = i40e_get_dcbx_status(hw, &hw->dcbx_status);
if (ret)
return ret;
/* Check the DCBX Status */
if (hw->dcbx_status == I40E_DCBX_STATUS_DONE ||
hw->dcbx_status == I40E_DCBX_STATUS_IN_PROGRESS) {
/* Get current DCBX configuration */
ret = i40e_get_dcb_config(hw);
if (ret)
return ret;
} else if (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED) {
return -EBUSY;
}
/* Configure the LLDP MIB change event */
if (enable_mib_change)
ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL);
return ret;
}
/**
* i40e_get_fw_lldp_status
* @hw: pointer to the hw struct
* @lldp_status: pointer to the status enum
*
* Get status of FW Link Layer Discovery Protocol (LLDP) Agent.
* Status of agent is reported via @lldp_status parameter.
**/
int
i40e_get_fw_lldp_status(struct i40e_hw *hw,
enum i40e_get_fw_lldp_status_resp *lldp_status)
{
struct i40e_virt_mem mem;
u8 *lldpmib;
int ret;
if (!lldp_status)
return -EINVAL;
/* Allocate buffer for the LLDPDU */
ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
if (ret)
return ret;
lldpmib = (u8 *)mem.va;
ret = i40e_aq_get_lldp_mib(hw, 0, 0, (void *)lldpmib,
I40E_LLDPDU_SIZE, NULL, NULL, NULL);
if (!ret) {
*lldp_status = I40E_GET_FW_LLDP_STATUS_ENABLED;
} else if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT) {
/* MIB is not available yet but the agent is running */
*lldp_status = I40E_GET_FW_LLDP_STATUS_ENABLED;
ret = 0;
} else if (hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
*lldp_status = I40E_GET_FW_LLDP_STATUS_DISABLED;
ret = 0;
}
i40e_free_virt_mem(hw, &mem);
return ret;
}
/**
* i40e_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
* @tlv: Fill the ETS config data in IEEE format
* @dcbcfg: Local store which holds the DCB Config
*
* Prepare IEEE 802.1Qaz ETS CFG TLV
**/
static void i40e_add_ieee_ets_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u8 priority0, priority1, maxtcwilling = 0;
struct i40e_dcb_ets_config *etscfg;
u16 offset = 0, typelength, i;
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
I40E_IEEE_ETS_TLV_LENGTH);
tlv->typelength = htons(typelength);
ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
I40E_IEEE_SUBTYPE_ETS_CFG);
tlv->ouisubtype = htonl(ouisubtype);
/* First Octet post subtype
* --------------------------
* |will-|CBS | Re- | Max |
* |ing | |served| TCs |
* --------------------------
* |1bit | 1bit|3 bits|3bits|
*/
etscfg = &dcbcfg->etscfg;
if (etscfg->willing)
maxtcwilling = BIT(I40E_IEEE_ETS_WILLING_SHIFT);
maxtcwilling |= etscfg->maxtcs & I40E_IEEE_ETS_MAXTC_MASK;
buf[offset] = maxtcwilling;
/* Move offset to Priority Assignment Table */
offset++;
/* Priority Assignment Table (4 octets)
* Octets:| 1 | 2 | 3 | 4 |
* -----------------------------------------
* |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
* -----------------------------------------
* Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
* -----------------------------------------
*/
for (i = 0; i < 4; i++) {
priority0 = etscfg->prioritytable[i * 2] & 0xF;
priority1 = etscfg->prioritytable[i * 2 + 1] & 0xF;
buf[offset] = (priority0 << I40E_IEEE_ETS_PRIO_1_SHIFT) |
priority1;
offset++;
}
/* TC Bandwidth Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
buf[offset++] = etscfg->tcbwtable[i];
/* TSA Assignment Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
buf[offset++] = etscfg->tsatable[i];
}
/**
* i40e_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
* @tlv: Fill ETS Recommended TLV in IEEE format
* @dcbcfg: Local store which holds the DCB Config
*
* Prepare IEEE 802.1Qaz ETS REC TLV
**/
static void i40e_add_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
struct i40e_dcb_ets_config *etsrec;
u16 offset = 0, typelength, i;
u8 priority0, priority1;
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
I40E_IEEE_ETS_TLV_LENGTH);
tlv->typelength = htons(typelength);
ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
I40E_IEEE_SUBTYPE_ETS_REC);
tlv->ouisubtype = htonl(ouisubtype);
etsrec = &dcbcfg->etsrec;
/* First Octet is reserved */
/* Move offset to Priority Assignment Table */
offset++;
/* Priority Assignment Table (4 octets)
* Octets:| 1 | 2 | 3 | 4 |
* -----------------------------------------
* |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
* -----------------------------------------
* Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
* -----------------------------------------
*/
for (i = 0; i < 4; i++) {
priority0 = etsrec->prioritytable[i * 2] & 0xF;
priority1 = etsrec->prioritytable[i * 2 + 1] & 0xF;
buf[offset] = (priority0 << I40E_IEEE_ETS_PRIO_1_SHIFT) |
priority1;
offset++;
}
/* TC Bandwidth Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
buf[offset++] = etsrec->tcbwtable[i];
/* TSA Assignment Table (8 octets)
* Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
* ---------------------------------
* |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
* ---------------------------------
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
buf[offset++] = etsrec->tsatable[i];
}
/**
* i40e_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
* @tlv: Fill PFC TLV in IEEE format
* @dcbcfg: Local store to get PFC CFG data
*
* Prepare IEEE 802.1Qaz PFC CFG TLV
**/
static void i40e_add_ieee_pfc_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
u16 typelength;
typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
I40E_IEEE_PFC_TLV_LENGTH);
tlv->typelength = htons(typelength);
ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
I40E_IEEE_SUBTYPE_PFC_CFG);
tlv->ouisubtype = htonl(ouisubtype);
/* ----------------------------------------
* |will-|MBC | Re- | PFC | PFC Enable |
* |ing | |served| cap | |
* -----------------------------------------
* |1bit | 1bit|2 bits|4bits| 1 octet |
*/
if (dcbcfg->pfc.willing)
buf[0] = BIT(I40E_IEEE_PFC_WILLING_SHIFT);
if (dcbcfg->pfc.mbc)
buf[0] |= BIT(I40E_IEEE_PFC_MBC_SHIFT);
buf[0] |= dcbcfg->pfc.pfccap & 0xF;
buf[1] = dcbcfg->pfc.pfcenable;
}
/**
* i40e_add_ieee_app_pri_tlv - Prepare APP TLV in IEEE format
* @tlv: Fill APP TLV in IEEE format
* @dcbcfg: Local store to get APP CFG data
*
* Prepare IEEE 802.1Qaz APP CFG TLV
**/
static void i40e_add_ieee_app_pri_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg)
{
u16 typelength, length, offset = 0;
u8 priority, selector, i = 0;
u8 *buf = tlv->tlvinfo;
u32 ouisubtype;
/* No APP TLVs then just return */
if (dcbcfg->numapps == 0)
return;
ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
I40E_IEEE_SUBTYPE_APP_PRI);
tlv->ouisubtype = htonl(ouisubtype);
/* Move offset to App Priority Table */
offset++;
/* Application Priority Table (3 octets)
* Octets:| 1 | 2 | 3 |
* -----------------------------------------
* |Priority|Rsrvd| Sel | Protocol ID |
* -----------------------------------------
* Bits:|23 21|20 19|18 16|15 0|
* -----------------------------------------
*/
while (i < dcbcfg->numapps) {
priority = dcbcfg->app[i].priority & 0x7;
selector = dcbcfg->app[i].selector & 0x7;
buf[offset] = (priority << I40E_IEEE_APP_PRIO_SHIFT) | selector;
buf[offset + 1] = (dcbcfg->app[i].protocolid >> 0x8) & 0xFF;
buf[offset + 2] = dcbcfg->app[i].protocolid & 0xFF;
/* Move to next app */
offset += 3;
i++;
if (i >= I40E_DCBX_MAX_APPS)
break;
}
/* length includes size of ouisubtype + 1 reserved + 3*numapps */
length = sizeof(tlv->ouisubtype) + 1 + (i * 3);
typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
(length & 0x1FF));
tlv->typelength = htons(typelength);
}
/**
* i40e_add_dcb_tlv - Add all IEEE TLVs
* @tlv: pointer to org tlv
* @dcbcfg: pointer to modified dcbx config structure *
* @tlvid: tlv id to be added
* add tlv information
**/
static void i40e_add_dcb_tlv(struct i40e_lldp_org_tlv *tlv,
struct i40e_dcbx_config *dcbcfg,
u16 tlvid)
{
switch (tlvid) {
case I40E_IEEE_TLV_ID_ETS_CFG:
i40e_add_ieee_ets_tlv(tlv, dcbcfg);
break;
case I40E_IEEE_TLV_ID_ETS_REC:
i40e_add_ieee_etsrec_tlv(tlv, dcbcfg);
break;
case I40E_IEEE_TLV_ID_PFC_CFG:
i40e_add_ieee_pfc_tlv(tlv, dcbcfg);
break;
case I40E_IEEE_TLV_ID_APP_PRI:
i40e_add_ieee_app_pri_tlv(tlv, dcbcfg);
break;
default:
break;
}
}
/**
* i40e_set_dcb_config - Set the local LLDP MIB to FW
* @hw: pointer to the hw struct
*
* Set DCB configuration to the Firmware
**/
int i40e_set_dcb_config(struct i40e_hw *hw)
{
struct i40e_dcbx_config *dcbcfg;
struct i40e_virt_mem mem;
u8 mib_type, *lldpmib;
u16 miblen;
int ret;
/* update the hw local config */
dcbcfg = &hw->local_dcbx_config;
/* Allocate the LLDPDU */
ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
if (ret)
return ret;
mib_type = SET_LOCAL_MIB_AC_TYPE_LOCAL_MIB;
if (dcbcfg->app_mode == I40E_DCBX_APPS_NON_WILLING) {
mib_type |= SET_LOCAL_MIB_AC_TYPE_NON_WILLING_APPS <<
SET_LOCAL_MIB_AC_TYPE_NON_WILLING_APPS_SHIFT;
}
lldpmib = (u8 *)mem.va;
i40e_dcb_config_to_lldp(lldpmib, &miblen, dcbcfg);
ret = i40e_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen, NULL);
i40e_free_virt_mem(hw, &mem);
return ret;
}
/**
* i40e_dcb_config_to_lldp - Convert Dcbconfig to MIB format
* @lldpmib: pointer to mib to be output
* @miblen: pointer to u16 for length of lldpmib
* @dcbcfg: store for LLDPDU data
*
* send DCB configuration to FW
**/
int i40e_dcb_config_to_lldp(u8 *lldpmib, u16 *miblen,
struct i40e_dcbx_config *dcbcfg)
{
u16 length, offset = 0, tlvid, typelength;
struct i40e_lldp_org_tlv *tlv;
tlv = (struct i40e_lldp_org_tlv *)lldpmib;
tlvid = I40E_TLV_ID_START;
do {
i40e_add_dcb_tlv(tlv, dcbcfg, tlvid++);
typelength = ntohs(tlv->typelength);
length = FIELD_GET(I40E_LLDP_TLV_LEN_MASK, typelength);
if (length)
offset += length + I40E_IEEE_TLV_HEADER_LENGTH;
/* END TLV or beyond LLDPDU size */
if (tlvid >= I40E_TLV_ID_END_OF_LLDPPDU ||
offset >= I40E_LLDPDU_SIZE)
break;
/* Move to next TLV */
if (length)
tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
sizeof(tlv->typelength) + length);
} while (tlvid < I40E_TLV_ID_END_OF_LLDPPDU);
*miblen = offset;
return 0;
}
/**
* i40e_dcb_hw_rx_fifo_config
* @hw: pointer to the hw struct
* @ets_mode: Strict Priority or Round Robin mode
* @non_ets_mode: Strict Priority or Round Robin
* @max_exponent: Exponent to calculate max refill credits
* @lltc_map: Low latency TC bitmap
*
* Configure HW Rx FIFO as part of DCB configuration.
**/
void i40e_dcb_hw_rx_fifo_config(struct i40e_hw *hw,
enum i40e_dcb_arbiter_mode ets_mode,
enum i40e_dcb_arbiter_mode non_ets_mode,
u32 max_exponent,
u8 lltc_map)
{
u32 reg = rd32(hw, I40E_PRTDCB_RETSC);
reg &= ~I40E_PRTDCB_RETSC_ETS_MODE_MASK;
reg |= FIELD_PREP(I40E_PRTDCB_RETSC_ETS_MODE_MASK, ets_mode);
reg &= ~I40E_PRTDCB_RETSC_NON_ETS_MODE_MASK;
reg |= FIELD_PREP(I40E_PRTDCB_RETSC_NON_ETS_MODE_MASK, non_ets_mode);
reg &= ~I40E_PRTDCB_RETSC_ETS_MAX_EXP_MASK;
reg |= FIELD_PREP(I40E_PRTDCB_RETSC_ETS_MAX_EXP_MASK, max_exponent);
reg &= ~I40E_PRTDCB_RETSC_LLTC_MASK;
reg |= FIELD_PREP(I40E_PRTDCB_RETSC_LLTC_MASK, lltc_map);
wr32(hw, I40E_PRTDCB_RETSC, reg);
}
/**
* i40e_dcb_hw_rx_cmd_monitor_config
* @hw: pointer to the hw struct
* @num_tc: Total number of traffic class
* @num_ports: Total number of ports on device
*
* Configure HW Rx command monitor as part of DCB configuration.
**/
void i40e_dcb_hw_rx_cmd_monitor_config(struct i40e_hw *hw,
u8 num_tc, u8 num_ports)
{
u32 threshold;
u32 fifo_size;
u32 reg;
/* Set the threshold and fifo_size based on number of ports */
switch (num_ports) {
case 1:
threshold = I40E_DCB_1_PORT_THRESHOLD;
fifo_size = I40E_DCB_1_PORT_FIFO_SIZE;
break;
case 2:
if (num_tc > 4) {
threshold = I40E_DCB_2_PORT_THRESHOLD_HIGH_NUM_TC;
fifo_size = I40E_DCB_2_PORT_FIFO_SIZE_HIGH_NUM_TC;
} else {
threshold = I40E_DCB_2_PORT_THRESHOLD_LOW_NUM_TC;
fifo_size = I40E_DCB_2_PORT_FIFO_SIZE_LOW_NUM_TC;
}
break;
case 4:
if (num_tc > 4) {
threshold = I40E_DCB_4_PORT_THRESHOLD_HIGH_NUM_TC;
fifo_size = I40E_DCB_4_PORT_FIFO_SIZE_HIGH_NUM_TC;
} else {
threshold = I40E_DCB_4_PORT_THRESHOLD_LOW_NUM_TC;
fifo_size = I40E_DCB_4_PORT_FIFO_SIZE_LOW_NUM_TC;
}
break;
default:
i40e_debug(hw, I40E_DEBUG_DCB, "Invalid num_ports %u.\n",
(u32)num_ports);
return;
}
/* The hardware manual describes setting up of I40E_PRT_SWR_PM_THR
* based on the number of ports and traffic classes for a given port as
* part of DCB configuration.
*/
reg = rd32(hw, I40E_PRT_SWR_PM_THR);
reg &= ~I40E_PRT_SWR_PM_THR_THRESHOLD_MASK;
reg |= FIELD_PREP(I40E_PRT_SWR_PM_THR_THRESHOLD_MASK, threshold);
wr32(hw, I40E_PRT_SWR_PM_THR, reg);
reg = rd32(hw, I40E_PRTDCB_RPPMC);
reg &= ~I40E_PRTDCB_RPPMC_RX_FIFO_SIZE_MASK;
reg |= FIELD_PREP(I40E_PRTDCB_RPPMC_RX_FIFO_SIZE_MASK, fifo_size);
wr32(hw, I40E_PRTDCB_RPPMC, reg);
}
/**
* i40e_dcb_hw_pfc_config
* @hw: pointer to the hw struct
* @pfc_en: Bitmap of PFC enabled priorities
* @prio_tc: priority to tc assignment indexed by priority
*
* Configure HW Priority Flow Controller as part of DCB configuration.
**/
void i40e_dcb_hw_pfc_config(struct i40e_hw *hw,
u8 pfc_en, u8 *prio_tc)
{
u16 refresh_time = (u16)I40E_DEFAULT_PAUSE_TIME / 2;
u32 link_speed = hw->phy.link_info.link_speed;
u8 first_pfc_prio = 0;
u8 num_pfc_tc = 0;
u8 tc2pfc = 0;
u32 reg;
u8 i;
/* Get Number of PFC TCs and TC2PFC map */
for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
if (pfc_en & BIT(i)) {
if (!first_pfc_prio)
first_pfc_prio = i;
/* Set bit for the PFC TC */
tc2pfc |= BIT(prio_tc[i]);
num_pfc_tc++;
}
}
switch (link_speed) {
case I40E_LINK_SPEED_10GB:
reg = rd32(hw, I40E_PRTDCB_MFLCN);
reg |= BIT(I40E_PRTDCB_MFLCN_DPF_SHIFT) &
I40E_PRTDCB_MFLCN_DPF_MASK;
reg &= ~I40E_PRTDCB_MFLCN_RFCE_MASK;
reg &= ~I40E_PRTDCB_MFLCN_RPFCE_MASK;
if (pfc_en) {
reg |= FIELD_PREP(I40E_PRTDCB_MFLCN_RPFCM_MASK, 1);
reg |= FIELD_PREP(I40E_PRTDCB_MFLCN_RPFCE_MASK,
pfc_en);
}
wr32(hw, I40E_PRTDCB_MFLCN, reg);
reg = rd32(hw, I40E_PRTDCB_FCCFG);
reg &= ~I40E_PRTDCB_FCCFG_TFCE_MASK;
if (pfc_en)
reg |= FIELD_PREP(I40E_PRTDCB_FCCFG_TFCE_MASK,
I40E_DCB_PFC_ENABLED);
wr32(hw, I40E_PRTDCB_FCCFG, reg);
/* FCTTV and FCRTV to be set by default */
break;
case I40E_LINK_SPEED_40GB:
reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_RX_ENABLE_GPP);
reg &= ~I40E_PRTMAC_HSEC_CTL_RX_ENABLE_GPP_MASK;
wr32(hw, I40E_PRTMAC_HSEC_CTL_RX_ENABLE_GPP, reg);
reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_RX_ENABLE_PPP);
reg &= ~I40E_PRTMAC_HSEC_CTL_RX_ENABLE_GPP_MASK;
reg |= BIT(I40E_PRTMAC_HSEC_CTL_RX_ENABLE_PPP_SHIFT) &
I40E_PRTMAC_HSEC_CTL_RX_ENABLE_PPP_MASK;
wr32(hw, I40E_PRTMAC_HSEC_CTL_RX_ENABLE_PPP, reg);
reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE);
reg &= ~I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE_MASK;
reg |= FIELD_PREP(I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE_MASK,
pfc_en);
wr32(hw, I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE, reg);
reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE);
reg &= ~I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE_MASK;
reg |= FIELD_PREP(I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE_MASK,
pfc_en);
wr32(hw, I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE, reg);
for (i = 0; i < I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER_MAX_INDEX; i++) {
reg = rd32(hw, I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER(i));
reg &= ~I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER_MASK;
if (pfc_en) {
reg |= FIELD_PREP(I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER_MASK,
refresh_time);
}
wr32(hw, I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER(i), reg);
}
/* PRTMAC_HSEC_CTL_TX_PAUSE_QUANTA default value is 0xFFFF
* for all user priorities
*/
break;
}
reg = rd32(hw, I40E_PRTDCB_TC2PFC);
reg &= ~I40E_PRTDCB_TC2PFC_TC2PFC_MASK;
reg |= FIELD_PREP(I40E_PRTDCB_TC2PFC_TC2PFC_MASK, tc2pfc);
wr32(hw, I40E_PRTDCB_TC2PFC, reg);
reg = rd32(hw, I40E_PRTDCB_RUP);
reg &= ~I40E_PRTDCB_RUP_NOVLANUP_MASK;
reg |= FIELD_PREP(I40E_PRTDCB_RUP_NOVLANUP_MASK, first_pfc_prio);
wr32(hw, I40E_PRTDCB_RUP, reg);
reg = rd32(hw, I40E_PRTDCB_TDPMC);
reg &= ~I40E_PRTDCB_TDPMC_TCPM_MODE_MASK;
if (num_pfc_tc > I40E_DCB_PFC_FORCED_NUM_TC) {
reg |= BIT(I40E_PRTDCB_TDPMC_TCPM_MODE_SHIFT) &
I40E_PRTDCB_TDPMC_TCPM_MODE_MASK;
}
wr32(hw, I40E_PRTDCB_TDPMC, reg);
reg = rd32(hw, I40E_PRTDCB_TCPMC);
reg &= ~I40E_PRTDCB_TCPMC_TCPM_MODE_MASK;
if (num_pfc_tc > I40E_DCB_PFC_FORCED_NUM_TC) {
reg |= BIT(I40E_PRTDCB_TCPMC_TCPM_MODE_SHIFT) &
I40E_PRTDCB_TCPMC_TCPM_MODE_MASK;
}
wr32(hw, I40E_PRTDCB_TCPMC, reg);
}
/**
* i40e_dcb_hw_set_num_tc
* @hw: pointer to the hw struct
* @num_tc: number of traffic classes
*
* Configure number of traffic classes in HW
**/
void i40e_dcb_hw_set_num_tc(struct i40e_hw *hw, u8 num_tc)
{
u32 reg = rd32(hw, I40E_PRTDCB_GENC);
reg &= ~I40E_PRTDCB_GENC_NUMTC_MASK;
reg |= FIELD_PREP(I40E_PRTDCB_GENC_NUMTC_MASK, num_tc);
wr32(hw, I40E_PRTDCB_GENC, reg);
}
/**
* i40e_dcb_hw_get_num_tc
* @hw: pointer to the hw struct
*
* Returns number of traffic classes configured in HW
**/
u8 i40e_dcb_hw_get_num_tc(struct i40e_hw *hw)
{
u32 reg = rd32(hw, I40E_PRTDCB_GENC);
return FIELD_GET(I40E_PRTDCB_GENC_NUMTC_MASK, reg);
}
/**
* i40e_dcb_hw_rx_ets_bw_config
* @hw: pointer to the hw struct
* @bw_share: Bandwidth share indexed per traffic class
* @mode: Strict Priority or Round Robin mode between UP sharing same
* traffic class
* @prio_type: TC is ETS enabled or strict priority
*
* Configure HW Rx ETS bandwidth as part of DCB configuration.
**/
void i40e_dcb_hw_rx_ets_bw_config(struct i40e_hw *hw, u8 *bw_share,
u8 *mode, u8 *prio_type)
{
u32 reg;
u8 i;
for (i = 0; i <= I40E_PRTDCB_RETSTCC_MAX_INDEX; i++) {
reg = rd32(hw, I40E_PRTDCB_RETSTCC(i));
reg &= ~(I40E_PRTDCB_RETSTCC_BWSHARE_MASK |
I40E_PRTDCB_RETSTCC_UPINTC_MODE_MASK |
I40E_PRTDCB_RETSTCC_ETSTC_MASK);
reg |= FIELD_PREP(I40E_PRTDCB_RETSTCC_BWSHARE_MASK,
bw_share[i]);
reg |= FIELD_PREP(I40E_PRTDCB_RETSTCC_UPINTC_MODE_MASK,
mode[i]);
reg |= FIELD_PREP(I40E_PRTDCB_RETSTCC_ETSTC_MASK,
prio_type[i]);
wr32(hw, I40E_PRTDCB_RETSTCC(i), reg);
}
}
/**
* i40e_dcb_hw_rx_up2tc_config
* @hw: pointer to the hw struct
* @prio_tc: priority to tc assignment indexed by priority
*
* Configure HW Rx UP2TC map as part of DCB configuration.
**/
void i40e_dcb_hw_rx_up2tc_config(struct i40e_hw *hw, u8 *prio_tc)
{
u32 reg = rd32(hw, I40E_PRTDCB_RUP2TC);
#define I40E_UP2TC_REG(val, i) \
(((val) << I40E_PRTDCB_RUP2TC_UP##i##TC_SHIFT) & \
I40E_PRTDCB_RUP2TC_UP##i##TC_MASK)
reg |= I40E_UP2TC_REG(prio_tc[0], 0);
reg |= I40E_UP2TC_REG(prio_tc[1], 1);
reg |= I40E_UP2TC_REG(prio_tc[2], 2);
reg |= I40E_UP2TC_REG(prio_tc[3], 3);
reg |= I40E_UP2TC_REG(prio_tc[4], 4);
reg |= I40E_UP2TC_REG(prio_tc[5], 5);
reg |= I40E_UP2TC_REG(prio_tc[6], 6);
reg |= I40E_UP2TC_REG(prio_tc[7], 7);
wr32(hw, I40E_PRTDCB_RUP2TC, reg);
}
/**
* i40e_dcb_hw_calculate_pool_sizes - configure dcb pool sizes
* @hw: pointer to the hw struct
* @num_ports: Number of available ports on the device
* @eee_enabled: EEE enabled for the given port
* @pfc_en: Bit map of PFC enabled traffic classes
* @mfs_tc: Array of max frame size for each traffic class
* @pb_cfg: pointer to packet buffer configuration
*
* Calculate the shared and dedicated per TC pool sizes,
* watermarks and threshold values.
**/
void i40e_dcb_hw_calculate_pool_sizes(struct i40e_hw *hw,
u8 num_ports, bool eee_enabled,
u8 pfc_en, u32 *mfs_tc,
struct i40e_rx_pb_config *pb_cfg)
{
u32 pool_size[I40E_MAX_TRAFFIC_CLASS];
u32 high_wm[I40E_MAX_TRAFFIC_CLASS];
u32 low_wm[I40E_MAX_TRAFFIC_CLASS];
u32 total_pool_size = 0;
int shared_pool_size; /* Need signed variable */
u32 port_pb_size;
u32 mfs_max = 0;
u32 pcirtt;
u8 i;
/* Get the MFS(max) for the port */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (mfs_tc[i] > mfs_max)
mfs_max = mfs_tc[i];
}
pcirtt = I40E_BT2B(I40E_PCIRTT_LINK_SPEED_10G);
/* Calculate effective Rx PB size per port */
port_pb_size = I40E_DEVICE_RPB_SIZE / num_ports;
if (eee_enabled)
port_pb_size -= I40E_BT2B(I40E_EEE_TX_LPI_EXIT_TIME);
port_pb_size -= mfs_max;
/* Step 1 Calculating tc pool/shared pool sizes and watermarks */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
if (pfc_en & BIT(i)) {
low_wm[i] = (I40E_DCB_WATERMARK_START_FACTOR *
mfs_tc[i]) + pcirtt;
high_wm[i] = low_wm[i];
high_wm[i] += ((mfs_max > I40E_MAX_FRAME_SIZE)
? mfs_max : I40E_MAX_FRAME_SIZE);
pool_size[i] = high_wm[i];
pool_size[i] += I40E_BT2B(I40E_STD_DV_TC(mfs_max,
mfs_tc[i]));
} else {
low_wm[i] = 0;
pool_size[i] = (I40E_DCB_WATERMARK_START_FACTOR *
mfs_tc[i]) + pcirtt;
high_wm[i] = pool_size[i];
}
total_pool_size += pool_size[i];
}
shared_pool_size = port_pb_size - total_pool_size;
if (shared_pool_size > 0) {
pb_cfg->shared_pool_size = shared_pool_size;
pb_cfg->shared_pool_high_wm = shared_pool_size;
pb_cfg->shared_pool_low_wm = 0;
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
pb_cfg->shared_pool_low_thresh[i] = 0;
pb_cfg->shared_pool_high_thresh[i] = shared_pool_size;
pb_cfg->tc_pool_size[i] = pool_size[i];
pb_cfg->tc_pool_high_wm[i] = high_wm[i];
pb_cfg->tc_pool_low_wm[i] = low_wm[i];
}
} else {
i40e_debug(hw, I40E_DEBUG_DCB,
"The shared pool size for the port is negative %d.\n",
shared_pool_size);
}
}
/**
* i40e_dcb_hw_rx_pb_config
* @hw: pointer to the hw struct
* @old_pb_cfg: Existing Rx Packet buffer configuration
* @new_pb_cfg: New Rx Packet buffer configuration
*
* Program the Rx Packet Buffer registers.
**/
void i40e_dcb_hw_rx_pb_config(struct i40e_hw *hw,
struct i40e_rx_pb_config *old_pb_cfg,
struct i40e_rx_pb_config *new_pb_cfg)
{
u32 old_val;
u32 new_val;
u32 reg;
u8 i;
/* The Rx Packet buffer register programming needs to be done in a
* certain order and the following code is based on that
* requirement.
*/
/* Program the shared pool low water mark per port if decreasing */
old_val = old_pb_cfg->shared_pool_low_wm;
new_val = new_pb_cfg->shared_pool_low_wm;
if (new_val < old_val) {
reg = rd32(hw, I40E_PRTRPB_SLW);
reg &= ~I40E_PRTRPB_SLW_SLW_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_SLW_SLW_MASK, new_val);
wr32(hw, I40E_PRTRPB_SLW, reg);
}
/* Program the shared pool low threshold and tc pool
* low water mark per TC that are decreasing.
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
old_val = old_pb_cfg->shared_pool_low_thresh[i];
new_val = new_pb_cfg->shared_pool_low_thresh[i];
if (new_val < old_val) {
reg = rd32(hw, I40E_PRTRPB_SLT(i));
reg &= ~I40E_PRTRPB_SLT_SLT_TCN_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_SLT_SLT_TCN_MASK,
new_val);
wr32(hw, I40E_PRTRPB_SLT(i), reg);
}
old_val = old_pb_cfg->tc_pool_low_wm[i];
new_val = new_pb_cfg->tc_pool_low_wm[i];
if (new_val < old_val) {
reg = rd32(hw, I40E_PRTRPB_DLW(i));
reg &= ~I40E_PRTRPB_DLW_DLW_TCN_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_DLW_DLW_TCN_MASK,
new_val);
wr32(hw, I40E_PRTRPB_DLW(i), reg);
}
}
/* Program the shared pool high water mark per port if decreasing */
old_val = old_pb_cfg->shared_pool_high_wm;
new_val = new_pb_cfg->shared_pool_high_wm;
if (new_val < old_val) {
reg = rd32(hw, I40E_PRTRPB_SHW);
reg &= ~I40E_PRTRPB_SHW_SHW_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_SHW_SHW_MASK, new_val);
wr32(hw, I40E_PRTRPB_SHW, reg);
}
/* Program the shared pool high threshold and tc pool
* high water mark per TC that are decreasing.
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
old_val = old_pb_cfg->shared_pool_high_thresh[i];
new_val = new_pb_cfg->shared_pool_high_thresh[i];
if (new_val < old_val) {
reg = rd32(hw, I40E_PRTRPB_SHT(i));
reg &= ~I40E_PRTRPB_SHT_SHT_TCN_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_SHT_SHT_TCN_MASK,
new_val);
wr32(hw, I40E_PRTRPB_SHT(i), reg);
}
old_val = old_pb_cfg->tc_pool_high_wm[i];
new_val = new_pb_cfg->tc_pool_high_wm[i];
if (new_val < old_val) {
reg = rd32(hw, I40E_PRTRPB_DHW(i));
reg &= ~I40E_PRTRPB_DHW_DHW_TCN_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_DHW_DHW_TCN_MASK,
new_val);
wr32(hw, I40E_PRTRPB_DHW(i), reg);
}
}
/* Write Dedicated Pool Sizes per TC */
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
new_val = new_pb_cfg->tc_pool_size[i];
reg = rd32(hw, I40E_PRTRPB_DPS(i));
reg &= ~I40E_PRTRPB_DPS_DPS_TCN_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_DPS_DPS_TCN_MASK, new_val);
wr32(hw, I40E_PRTRPB_DPS(i), reg);
}
/* Write Shared Pool Size per port */
new_val = new_pb_cfg->shared_pool_size;
reg = rd32(hw, I40E_PRTRPB_SPS);
reg &= ~I40E_PRTRPB_SPS_SPS_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_SPS_SPS_MASK, new_val);
wr32(hw, I40E_PRTRPB_SPS, reg);
/* Program the shared pool low water mark per port if increasing */
old_val = old_pb_cfg->shared_pool_low_wm;
new_val = new_pb_cfg->shared_pool_low_wm;
if (new_val > old_val) {
reg = rd32(hw, I40E_PRTRPB_SLW);
reg &= ~I40E_PRTRPB_SLW_SLW_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_SLW_SLW_MASK, new_val);
wr32(hw, I40E_PRTRPB_SLW, reg);
}
/* Program the shared pool low threshold and tc pool
* low water mark per TC that are increasing.
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
old_val = old_pb_cfg->shared_pool_low_thresh[i];
new_val = new_pb_cfg->shared_pool_low_thresh[i];
if (new_val > old_val) {
reg = rd32(hw, I40E_PRTRPB_SLT(i));
reg &= ~I40E_PRTRPB_SLT_SLT_TCN_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_SLT_SLT_TCN_MASK,
new_val);
wr32(hw, I40E_PRTRPB_SLT(i), reg);
}
old_val = old_pb_cfg->tc_pool_low_wm[i];
new_val = new_pb_cfg->tc_pool_low_wm[i];
if (new_val > old_val) {
reg = rd32(hw, I40E_PRTRPB_DLW(i));
reg &= ~I40E_PRTRPB_DLW_DLW_TCN_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_DLW_DLW_TCN_MASK,
new_val);
wr32(hw, I40E_PRTRPB_DLW(i), reg);
}
}
/* Program the shared pool high water mark per port if increasing */
old_val = old_pb_cfg->shared_pool_high_wm;
new_val = new_pb_cfg->shared_pool_high_wm;
if (new_val > old_val) {
reg = rd32(hw, I40E_PRTRPB_SHW);
reg &= ~I40E_PRTRPB_SHW_SHW_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_SHW_SHW_MASK, new_val);
wr32(hw, I40E_PRTRPB_SHW, reg);
}
/* Program the shared pool high threshold and tc pool
* high water mark per TC that are increasing.
*/
for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
old_val = old_pb_cfg->shared_pool_high_thresh[i];
new_val = new_pb_cfg->shared_pool_high_thresh[i];
if (new_val > old_val) {
reg = rd32(hw, I40E_PRTRPB_SHT(i));
reg &= ~I40E_PRTRPB_SHT_SHT_TCN_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_SHT_SHT_TCN_MASK,
new_val);
wr32(hw, I40E_PRTRPB_SHT(i), reg);
}
old_val = old_pb_cfg->tc_pool_high_wm[i];
new_val = new_pb_cfg->tc_pool_high_wm[i];
if (new_val > old_val) {
reg = rd32(hw, I40E_PRTRPB_DHW(i));
reg &= ~I40E_PRTRPB_DHW_DHW_TCN_MASK;
reg |= FIELD_PREP(I40E_PRTRPB_DHW_DHW_TCN_MASK,
new_val);
wr32(hw, I40E_PRTRPB_DHW(i), reg);
}
}
}
/**
* _i40e_read_lldp_cfg - generic read of LLDP Configuration data from NVM
* @hw: pointer to the HW structure
* @lldp_cfg: pointer to hold lldp configuration variables
* @module: address of the module pointer
* @word_offset: offset of LLDP configuration
*
* Reads the LLDP configuration data from NVM using passed addresses
**/
static int _i40e_read_lldp_cfg(struct i40e_hw *hw,
struct i40e_lldp_variables *lldp_cfg,
u8 module, u32 word_offset)
{
u32 address, offset = (2 * word_offset);
__le16 raw_mem;
int ret;
u16 mem;
ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
if (ret)
return ret;
ret = i40e_aq_read_nvm(hw, 0x0, module * 2, sizeof(raw_mem), &raw_mem,
true, NULL);
i40e_release_nvm(hw);
if (ret)
return ret;
mem = le16_to_cpu(raw_mem);
/* Check if this pointer needs to be read in word size or 4K sector
* units.
*/
if (mem & I40E_PTR_TYPE)
address = (0x7FFF & mem) * 4096;
else
address = (0x7FFF & mem) * 2;
ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
if (ret)
goto err_lldp_cfg;
ret = i40e_aq_read_nvm(hw, module, offset, sizeof(raw_mem), &raw_mem,
true, NULL);
i40e_release_nvm(hw);
if (ret)
return ret;
mem = le16_to_cpu(raw_mem);
offset = mem + word_offset;
offset *= 2;
ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
if (ret)
goto err_lldp_cfg;
ret = i40e_aq_read_nvm(hw, 0, address + offset,
sizeof(struct i40e_lldp_variables), lldp_cfg,
true, NULL);
i40e_release_nvm(hw);
err_lldp_cfg:
return ret;
}
/**
* i40e_read_lldp_cfg - read LLDP Configuration data from NVM
* @hw: pointer to the HW structure
* @lldp_cfg: pointer to hold lldp configuration variables
*
* Reads the LLDP configuration data from NVM
**/
int i40e_read_lldp_cfg(struct i40e_hw *hw,
struct i40e_lldp_variables *lldp_cfg)
{
int ret = 0;
u32 mem;
if (!lldp_cfg)
return -EINVAL;
ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
if (ret)
return ret;
ret = i40e_aq_read_nvm(hw, I40E_SR_NVM_CONTROL_WORD, 0, sizeof(mem),
&mem, true, NULL);
i40e_release_nvm(hw);
if (ret)
return ret;
/* Read a bit that holds information whether we are running flat or
* structured NVM image. Flat image has LLDP configuration in shadow
* ram, so there is a need to pass different addresses for both cases.
*/
if (mem & I40E_SR_NVM_MAP_STRUCTURE_TYPE) {
/* Flat NVM case */
ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_SR_EMP_MODULE_PTR,
I40E_SR_LLDP_CFG_PTR);
} else {
/* Good old structured NVM image */
ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_EMP_MODULE_PTR,
I40E_NVM_LLDP_CFG_PTR);
}
return ret;
}