diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_dcb.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_dcb.c | 1987 |
1 files changed, 1987 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_dcb.c b/drivers/net/ethernet/intel/i40e/i40e_dcb.c new file mode 100644 index 000000000..f81e744c0 --- /dev/null +++ b/drivers/net/ethernet/intel/i40e/i40e_dcb.c @@ -0,0 +1,1987 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2013 - 2021 Intel Corporation. */ + +#include "i40e_adminq.h" +#include "i40e_prototype.h" +#include "i40e_dcb.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 = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >> + I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT); + + 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 = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >> + I40E_IEEE_ETS_WILLING_SHIFT); + etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >> + I40E_IEEE_ETS_CBS_SHIFT); + etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >> + I40E_IEEE_ETS_MAXTC_SHIFT); + + /* 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 = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >> + I40E_IEEE_ETS_PRIO_1_SHIFT); + etscfg->prioritytable[i * 2] = priority; + priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >> + I40E_IEEE_ETS_PRIO_0_SHIFT); + 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 = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >> + I40E_IEEE_ETS_PRIO_1_SHIFT); + dcbcfg->etsrec.prioritytable[i*2] = priority; + priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >> + I40E_IEEE_ETS_PRIO_0_SHIFT); + 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 = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >> + I40E_IEEE_PFC_WILLING_SHIFT); + dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >> + I40E_IEEE_PFC_MBC_SHIFT); + dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >> + I40E_IEEE_PFC_CAP_SHIFT); + 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 = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> + I40E_LLDP_TLV_LEN_SHIFT); + 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 = (u8)((buf[offset] & + I40E_IEEE_APP_PRIO_MASK) >> + I40E_IEEE_APP_PRIO_SHIFT); + dcbcfg->app[i].selector = (u8)((buf[offset] & + I40E_IEEE_APP_SEL_MASK) >> + I40E_IEEE_APP_SEL_SHIFT); + 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 = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >> + I40E_LLDP_TLV_SUBTYPE_SHIFT); + 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 = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_1_MASK) >> + I40E_CEE_PGID_PRIO_1_SHIFT); + etscfg->prioritytable[i * 2] = priority; + priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_0_MASK) >> + I40E_CEE_PGID_PRIO_0_SHIFT); + 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 = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> + I40E_LLDP_TLV_LEN_SHIFT); + + 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 = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >> + I40E_LLDP_TLV_SUBTYPE_SHIFT); + /* Return if not CEE DCBX */ + if (subtype != I40E_CEE_DCBX_TYPE) + return; + + typelength = ntohs(tlv->typelength); + tlvlen = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> + I40E_LLDP_TLV_LEN_SHIFT); + 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 = (u16)((typelength & + I40E_LLDP_TLV_LEN_MASK) >> + I40E_LLDP_TLV_LEN_SHIFT); + subtype = (u8)((typelength & I40E_LLDP_TLV_TYPE_MASK) >> + I40E_LLDP_TLV_TYPE_SHIFT); + 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 = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >> + I40E_LLDP_TLV_OUI_SHIFT); + 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 = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >> + I40E_LLDP_TLV_TYPE_SHIFT); + length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> + I40E_LLDP_TLV_LEN_SHIFT); + 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, tc, 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++) { + tc = (u8)((cee_cfg->oper_prio_tc[i] & + I40E_CEE_PGID_PRIO_0_MASK) >> + I40E_CEE_PGID_PRIO_0_SHIFT); + dcbcfg->etscfg.prioritytable[i * 2] = tc; + tc = (u8)((cee_cfg->oper_prio_tc[i] & + I40E_CEE_PGID_PRIO_1_MASK) >> + I40E_CEE_PGID_PRIO_1_SHIFT); + 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 = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >> + I40E_AQC_CEE_APP_STATUS_SHIFT; + 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 = + (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >> + I40E_AQC_CEE_APP_FCOE_SHIFT; + dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE; + dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE; + + /* iSCSI APP */ + dcbcfg->app[1].priority = + (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >> + I40E_AQC_CEE_APP_ISCSI_SHIFT; + dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP; + dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI; + + /* FIP APP */ + dcbcfg->app[2].priority = + (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >> + I40E_AQC_CEE_APP_FIP_SHIFT; + 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, tc, 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++) { + tc = (u8)((cee_cfg->oper_prio_tc[i] & + I40E_CEE_PGID_PRIO_0_MASK) >> + I40E_CEE_PGID_PRIO_0_SHIFT); + dcbcfg->etscfg.prioritytable[i * 2] = tc; + tc = (u8)((cee_cfg->oper_prio_tc[i] & + I40E_CEE_PGID_PRIO_1_MASK) >> + I40E_CEE_PGID_PRIO_1_SHIFT); + 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 = (tlv_status & I40E_AQC_CEE_FCOE_STATUS_MASK) >> + I40E_AQC_CEE_FCOE_STATUS_SHIFT; + 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 = + (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >> + I40E_AQC_CEE_APP_FCOE_SHIFT; + dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE; + dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FCOE; + i++; + } + + status = (tlv_status & I40E_AQC_CEE_ISCSI_STATUS_MASK) >> + I40E_AQC_CEE_ISCSI_STATUS_SHIFT; + 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 = + (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >> + I40E_AQC_CEE_APP_ISCSI_SHIFT; + dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP; + dcbcfg->app[i].protocolid = I40E_APP_PROTOID_ISCSI; + i++; + } + + status = (tlv_status & I40E_AQC_CEE_FIP_STATUS_MASK) >> + I40E_AQC_CEE_FIP_STATUS_SHIFT; + 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 = + (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >> + I40E_AQC_CEE_APP_FIP_SHIFT; + 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) && + (((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver < 33)) || + (hw->aq.fw_maj_ver < 4))) + 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) && + ((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver == 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 (hw->flags & I40E_HW_FLAG_FW_LLDP_PERSISTENT) { + 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 = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >> + I40E_LLDP_TLV_LEN_SHIFT); + 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 |= ((u32)ets_mode << I40E_PRTDCB_RETSC_ETS_MODE_SHIFT) & + I40E_PRTDCB_RETSC_ETS_MODE_MASK; + + reg &= ~I40E_PRTDCB_RETSC_NON_ETS_MODE_MASK; + reg |= ((u32)non_ets_mode << I40E_PRTDCB_RETSC_NON_ETS_MODE_SHIFT) & + I40E_PRTDCB_RETSC_NON_ETS_MODE_MASK; + + reg &= ~I40E_PRTDCB_RETSC_ETS_MAX_EXP_MASK; + reg |= (max_exponent << I40E_PRTDCB_RETSC_ETS_MAX_EXP_SHIFT) & + I40E_PRTDCB_RETSC_ETS_MAX_EXP_MASK; + + reg &= ~I40E_PRTDCB_RETSC_LLTC_MASK; + reg |= (lltc_map << I40E_PRTDCB_RETSC_LLTC_SHIFT) & + I40E_PRTDCB_RETSC_LLTC_MASK; + 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 |= (threshold << I40E_PRT_SWR_PM_THR_THRESHOLD_SHIFT) & + I40E_PRT_SWR_PM_THR_THRESHOLD_MASK; + wr32(hw, I40E_PRT_SWR_PM_THR, reg); + + reg = rd32(hw, I40E_PRTDCB_RPPMC); + reg &= ~I40E_PRTDCB_RPPMC_RX_FIFO_SIZE_MASK; + reg |= (fifo_size << I40E_PRTDCB_RPPMC_RX_FIFO_SIZE_SHIFT) & + I40E_PRTDCB_RPPMC_RX_FIFO_SIZE_MASK; + 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 |= BIT(I40E_PRTDCB_MFLCN_RPFCM_SHIFT) & + I40E_PRTDCB_MFLCN_RPFCM_MASK; + reg |= ((u32)pfc_en << I40E_PRTDCB_MFLCN_RPFCE_SHIFT) & + I40E_PRTDCB_MFLCN_RPFCE_MASK; + } + wr32(hw, I40E_PRTDCB_MFLCN, reg); + + reg = rd32(hw, I40E_PRTDCB_FCCFG); + reg &= ~I40E_PRTDCB_FCCFG_TFCE_MASK; + if (pfc_en) + reg |= (I40E_DCB_PFC_ENABLED << + I40E_PRTDCB_FCCFG_TFCE_SHIFT) & + I40E_PRTDCB_FCCFG_TFCE_MASK; + 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 |= ((u32)pfc_en << + I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE_SHIFT) & + I40E_PRTMAC_HSEC_CTL_RX_PAUSE_ENABLE_MASK; + 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 |= ((u32)pfc_en << + I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE_SHIFT) & + I40E_PRTMAC_HSEC_CTL_TX_PAUSE_ENABLE_MASK; + 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 |= ((u32)refresh_time << + I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER_SHIFT) & + I40E_PRTMAC_HSEC_CTL_TX_PAUSE_REFRESH_TIMER_MASK; + } + 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 |= ((u32)tc2pfc << I40E_PRTDCB_TC2PFC_TC2PFC_SHIFT) & + I40E_PRTDCB_TC2PFC_TC2PFC_MASK; + wr32(hw, I40E_PRTDCB_TC2PFC, reg); + + reg = rd32(hw, I40E_PRTDCB_RUP); + reg &= ~I40E_PRTDCB_RUP_NOVLANUP_MASK; + reg |= ((u32)first_pfc_prio << I40E_PRTDCB_RUP_NOVLANUP_SHIFT) & + I40E_PRTDCB_RUP_NOVLANUP_MASK; + 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 |= ((u32)num_tc << I40E_PRTDCB_GENC_NUMTC_SHIFT) & + I40E_PRTDCB_GENC_NUMTC_MASK; + 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 (u8)((reg & I40E_PRTDCB_GENC_NUMTC_MASK) >> + I40E_PRTDCB_GENC_NUMTC_SHIFT); +} + +/** + * 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_SHIFT); + reg |= ((u32)bw_share[i] << I40E_PRTDCB_RETSTCC_BWSHARE_SHIFT) & + I40E_PRTDCB_RETSTCC_BWSHARE_MASK; + reg |= ((u32)mode[i] << I40E_PRTDCB_RETSTCC_UPINTC_MODE_SHIFT) & + I40E_PRTDCB_RETSTCC_UPINTC_MODE_MASK; + reg |= ((u32)prio_type[i] << I40E_PRTDCB_RETSTCC_ETSTC_SHIFT) & + I40E_PRTDCB_RETSTCC_ETSTC_MASK; + 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 |= (new_val << I40E_PRTRPB_SLW_SLW_SHIFT) & + I40E_PRTRPB_SLW_SLW_MASK; + 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 |= (new_val << I40E_PRTRPB_SLT_SLT_TCN_SHIFT) & + I40E_PRTRPB_SLT_SLT_TCN_MASK; + 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 |= (new_val << I40E_PRTRPB_DLW_DLW_TCN_SHIFT) & + I40E_PRTRPB_DLW_DLW_TCN_MASK; + 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 |= (new_val << I40E_PRTRPB_SHW_SHW_SHIFT) & + I40E_PRTRPB_SHW_SHW_MASK; + 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 |= (new_val << I40E_PRTRPB_SHT_SHT_TCN_SHIFT) & + I40E_PRTRPB_SHT_SHT_TCN_MASK; + 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 |= (new_val << I40E_PRTRPB_DHW_DHW_TCN_SHIFT) & + I40E_PRTRPB_DHW_DHW_TCN_MASK; + 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 |= (new_val << I40E_PRTRPB_DPS_DPS_TCN_SHIFT) & + I40E_PRTRPB_DPS_DPS_TCN_MASK; + 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 |= (new_val << I40E_PRTRPB_SPS_SPS_SHIFT) & + I40E_PRTRPB_SPS_SPS_MASK; + 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 |= (new_val << I40E_PRTRPB_SLW_SLW_SHIFT) & + I40E_PRTRPB_SLW_SLW_MASK; + 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 |= (new_val << I40E_PRTRPB_SLT_SLT_TCN_SHIFT) & + I40E_PRTRPB_SLT_SLT_TCN_MASK; + 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 |= (new_val << I40E_PRTRPB_DLW_DLW_TCN_SHIFT) & + I40E_PRTRPB_DLW_DLW_TCN_MASK; + 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 |= (new_val << I40E_PRTRPB_SHW_SHW_SHIFT) & + I40E_PRTRPB_SHW_SHW_MASK; + 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 |= (new_val << I40E_PRTRPB_SHT_SHT_TCN_SHIFT) & + I40E_PRTRPB_SHT_SHT_TCN_MASK; + 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 |= (new_val << I40E_PRTRPB_DHW_DHW_TCN_SHIFT) & + I40E_PRTRPB_DHW_DHW_TCN_MASK; + 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; +} |