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bnx2x_dcb.c
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bnx2x_dcb.c
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/* bnx2x_dcb.c: QLogic Everest network driver.
*
* Copyright 2009-2013 Broadcom Corporation
* Copyright 2014 QLogic Corporation
* All rights reserved
*
* Unless you and QLogic execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2, available
* at http://www.gnu.org/licenses/old-licenses/gpl-2.0.html (the "GPL").
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other QLogic software provided under a
* license other than the GPL, without QLogic's express prior written
* consent.
*
* Maintained by: Ariel Elior <ariel.elior@qlogic.com>
* Written by: Dmitry Kravkov
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/rtnetlink.h>
#include <net/dcbnl.h>
#include "bnx2x.h"
#include "bnx2x_cmn.h"
#include "bnx2x_dcb.h"
/* forward declarations of dcbx related functions */
static void bnx2x_pfc_set_pfc(struct bnx2x *bp);
static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp);
static void bnx2x_dcbx_get_ets_pri_pg_tbl(struct bnx2x *bp,
u32 *set_configuration_ets_pg,
u32 *pri_pg_tbl);
static void bnx2x_dcbx_get_num_pg_traf_type(struct bnx2x *bp,
u32 *pg_pri_orginal_spread,
struct pg_help_data *help_data);
static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
struct pg_help_data *help_data,
struct dcbx_ets_feature *ets,
u32 *pg_pri_orginal_spread);
static void bnx2x_dcbx_separate_pauseable_from_non(struct bnx2x *bp,
struct cos_help_data *cos_data,
u32 *pg_pri_orginal_spread,
struct dcbx_ets_feature *ets);
static void bnx2x_dcbx_fw_struct(struct bnx2x *bp,
struct bnx2x_func_tx_start_params*);
/* helpers: read/write len bytes from addr into buff by REG_RD/REG_WR */
static void bnx2x_read_data(struct bnx2x *bp, u32 *buff,
u32 addr, u32 len)
{
int i;
for (i = 0; i < len; i += 4, buff++)
*buff = REG_RD(bp, addr + i);
}
static void bnx2x_write_data(struct bnx2x *bp, u32 *buff,
u32 addr, u32 len)
{
int i;
for (i = 0; i < len; i += 4, buff++)
REG_WR(bp, addr + i, *buff);
}
static void bnx2x_pfc_set(struct bnx2x *bp)
{
struct bnx2x_nig_brb_pfc_port_params pfc_params = {0};
u32 pri_bit, val = 0;
int i;
pfc_params.num_of_rx_cos_priority_mask =
bp->dcbx_port_params.ets.num_of_cos;
/* Tx COS configuration */
for (i = 0; i < bp->dcbx_port_params.ets.num_of_cos; i++)
/*
* We configure only the pauseable bits (non pauseable aren't
* configured at all) it's done to avoid false pauses from
* network
*/
pfc_params.rx_cos_priority_mask[i] =
bp->dcbx_port_params.ets.cos_params[i].pri_bitmask
& DCBX_PFC_PRI_PAUSE_MASK(bp);
/*
* Rx COS configuration
* Changing PFC RX configuration .
* In RX COS0 will always be configured to lossless and COS1 to lossy
*/
for (i = 0 ; i < MAX_PFC_PRIORITIES ; i++) {
pri_bit = 1 << i;
if (!(pri_bit & DCBX_PFC_PRI_PAUSE_MASK(bp)))
val |= 1 << (i * 4);
}
pfc_params.pkt_priority_to_cos = val;
/* RX COS0 */
pfc_params.llfc_low_priority_classes = DCBX_PFC_PRI_PAUSE_MASK(bp);
/* RX COS1 */
pfc_params.llfc_high_priority_classes = 0;
bnx2x_acquire_phy_lock(bp);
bp->link_params.feature_config_flags |= FEATURE_CONFIG_PFC_ENABLED;
bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &pfc_params);
bnx2x_release_phy_lock(bp);
}
static void bnx2x_pfc_clear(struct bnx2x *bp)
{
struct bnx2x_nig_brb_pfc_port_params nig_params = {0};
nig_params.pause_enable = 1;
bnx2x_acquire_phy_lock(bp);
bp->link_params.feature_config_flags &= ~FEATURE_CONFIG_PFC_ENABLED;
bnx2x_update_pfc(&bp->link_params, &bp->link_vars, &nig_params);
bnx2x_release_phy_lock(bp);
}
static void bnx2x_dump_dcbx_drv_param(struct bnx2x *bp,
struct dcbx_features *features,
u32 error)
{
u8 i = 0;
DP(NETIF_MSG_LINK, "local_mib.error %x\n", error);
/* PG */
DP(NETIF_MSG_LINK,
"local_mib.features.ets.enabled %x\n", features->ets.enabled);
for (i = 0; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++)
DP(NETIF_MSG_LINK,
"local_mib.features.ets.pg_bw_tbl[%d] %d\n", i,
DCBX_PG_BW_GET(features->ets.pg_bw_tbl, i));
for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++)
DP(NETIF_MSG_LINK,
"local_mib.features.ets.pri_pg_tbl[%d] %d\n", i,
DCBX_PRI_PG_GET(features->ets.pri_pg_tbl, i));
/* pfc */
DP(BNX2X_MSG_DCB, "dcbx_features.pfc.pri_en_bitmap %x\n",
features->pfc.pri_en_bitmap);
DP(BNX2X_MSG_DCB, "dcbx_features.pfc.pfc_caps %x\n",
features->pfc.pfc_caps);
DP(BNX2X_MSG_DCB, "dcbx_features.pfc.enabled %x\n",
features->pfc.enabled);
DP(BNX2X_MSG_DCB, "dcbx_features.app.default_pri %x\n",
features->app.default_pri);
DP(BNX2X_MSG_DCB, "dcbx_features.app.tc_supported %x\n",
features->app.tc_supported);
DP(BNX2X_MSG_DCB, "dcbx_features.app.enabled %x\n",
features->app.enabled);
for (i = 0; i < DCBX_MAX_APP_PROTOCOL; i++) {
DP(BNX2X_MSG_DCB,
"dcbx_features.app.app_pri_tbl[%x].app_id %x\n",
i, features->app.app_pri_tbl[i].app_id);
DP(BNX2X_MSG_DCB,
"dcbx_features.app.app_pri_tbl[%x].pri_bitmap %x\n",
i, features->app.app_pri_tbl[i].pri_bitmap);
DP(BNX2X_MSG_DCB,
"dcbx_features.app.app_pri_tbl[%x].appBitfield %x\n",
i, features->app.app_pri_tbl[i].appBitfield);
}
}
static void bnx2x_dcbx_get_ap_priority(struct bnx2x *bp,
u8 pri_bitmap,
u8 llfc_traf_type)
{
u32 pri = MAX_PFC_PRIORITIES;
u32 index = MAX_PFC_PRIORITIES - 1;
u32 pri_mask;
u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
/* Choose the highest priority */
while ((MAX_PFC_PRIORITIES == pri) && (0 != index)) {
pri_mask = 1 << index;
if (GET_FLAGS(pri_bitmap, pri_mask))
pri = index ;
index--;
}
if (pri < MAX_PFC_PRIORITIES)
ttp[llfc_traf_type] = max_t(u32, ttp[llfc_traf_type], pri);
}
static void bnx2x_dcbx_get_ap_feature(struct bnx2x *bp,
struct dcbx_app_priority_feature *app,
u32 error) {
u8 index;
u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
u8 iscsi_pri_found = 0, fcoe_pri_found = 0;
if (GET_FLAGS(error, DCBX_LOCAL_APP_ERROR))
DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_ERROR\n");
if (GET_FLAGS(error, DCBX_LOCAL_APP_MISMATCH))
DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_MISMATCH\n");
if (GET_FLAGS(error, DCBX_REMOTE_APP_TLV_NOT_FOUND))
DP(BNX2X_MSG_DCB, "DCBX_REMOTE_APP_TLV_NOT_FOUND\n");
if (app->enabled &&
!GET_FLAGS(error, DCBX_LOCAL_APP_ERROR | DCBX_LOCAL_APP_MISMATCH |
DCBX_REMOTE_APP_TLV_NOT_FOUND)) {
bp->dcbx_port_params.app.enabled = true;
/* Use 0 as the default application priority for all. */
for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
ttp[index] = 0;
for (index = 0 ; index < DCBX_MAX_APP_PROTOCOL; index++) {
struct dcbx_app_priority_entry *entry =
app->app_pri_tbl;
enum traffic_type type = MAX_TRAFFIC_TYPE;
if (GET_FLAGS(entry[index].appBitfield,
DCBX_APP_SF_DEFAULT) &&
GET_FLAGS(entry[index].appBitfield,
DCBX_APP_SF_ETH_TYPE)) {
type = LLFC_TRAFFIC_TYPE_NW;
} else if (GET_FLAGS(entry[index].appBitfield,
DCBX_APP_SF_PORT) &&
TCP_PORT_ISCSI == entry[index].app_id) {
type = LLFC_TRAFFIC_TYPE_ISCSI;
iscsi_pri_found = 1;
} else if (GET_FLAGS(entry[index].appBitfield,
DCBX_APP_SF_ETH_TYPE) &&
ETH_TYPE_FCOE == entry[index].app_id) {
type = LLFC_TRAFFIC_TYPE_FCOE;
fcoe_pri_found = 1;
}
if (type == MAX_TRAFFIC_TYPE)
continue;
bnx2x_dcbx_get_ap_priority(bp,
entry[index].pri_bitmap,
type);
}
/* If we have received a non-zero default application
* priority, then use that for applications which are
* not configured with any priority.
*/
if (ttp[LLFC_TRAFFIC_TYPE_NW] != 0) {
if (!iscsi_pri_found) {
ttp[LLFC_TRAFFIC_TYPE_ISCSI] =
ttp[LLFC_TRAFFIC_TYPE_NW];
DP(BNX2X_MSG_DCB,
"ISCSI is using default priority.\n");
}
if (!fcoe_pri_found) {
ttp[LLFC_TRAFFIC_TYPE_FCOE] =
ttp[LLFC_TRAFFIC_TYPE_NW];
DP(BNX2X_MSG_DCB,
"FCoE is using default priority.\n");
}
}
} else {
DP(BNX2X_MSG_DCB, "DCBX_LOCAL_APP_DISABLED\n");
bp->dcbx_port_params.app.enabled = false;
for (index = 0 ; index < LLFC_DRIVER_TRAFFIC_TYPE_MAX; index++)
ttp[index] = INVALID_TRAFFIC_TYPE_PRIORITY;
}
}
static void bnx2x_dcbx_get_ets_feature(struct bnx2x *bp,
struct dcbx_ets_feature *ets,
u32 error) {
int i = 0;
u32 pg_pri_orginal_spread[DCBX_MAX_NUM_PG_BW_ENTRIES] = {0};
struct pg_help_data pg_help_data;
struct bnx2x_dcbx_cos_params *cos_params =
bp->dcbx_port_params.ets.cos_params;
memset(&pg_help_data, 0, sizeof(struct pg_help_data));
if (GET_FLAGS(error, DCBX_LOCAL_ETS_ERROR))
DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_ERROR\n");
if (GET_FLAGS(error, DCBX_REMOTE_ETS_TLV_NOT_FOUND))
DP(BNX2X_MSG_DCB, "DCBX_REMOTE_ETS_TLV_NOT_FOUND\n");
/* Clean up old settings of ets on COS */
for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params) ; i++) {
cos_params[i].pauseable = false;
cos_params[i].strict = BNX2X_DCBX_STRICT_INVALID;
cos_params[i].bw_tbl = DCBX_INVALID_COS_BW;
cos_params[i].pri_bitmask = 0;
}
if (bp->dcbx_port_params.app.enabled && ets->enabled &&
!GET_FLAGS(error,
DCBX_LOCAL_ETS_ERROR | DCBX_REMOTE_ETS_TLV_NOT_FOUND)) {
DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_ENABLE\n");
bp->dcbx_port_params.ets.enabled = true;
bnx2x_dcbx_get_ets_pri_pg_tbl(bp,
pg_pri_orginal_spread,
ets->pri_pg_tbl);
bnx2x_dcbx_get_num_pg_traf_type(bp,
pg_pri_orginal_spread,
&pg_help_data);
bnx2x_dcbx_fill_cos_params(bp, &pg_help_data,
ets, pg_pri_orginal_spread);
} else {
DP(BNX2X_MSG_DCB, "DCBX_LOCAL_ETS_DISABLED\n");
bp->dcbx_port_params.ets.enabled = false;
ets->pri_pg_tbl[0] = 0;
for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES ; i++)
DCBX_PG_BW_SET(ets->pg_bw_tbl, i, 1);
}
}
static void bnx2x_dcbx_get_pfc_feature(struct bnx2x *bp,
struct dcbx_pfc_feature *pfc, u32 error)
{
if (GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR))
DP(BNX2X_MSG_DCB, "DCBX_LOCAL_PFC_ERROR\n");
if (GET_FLAGS(error, DCBX_REMOTE_PFC_TLV_NOT_FOUND))
DP(BNX2X_MSG_DCB, "DCBX_REMOTE_PFC_TLV_NOT_FOUND\n");
if (bp->dcbx_port_params.app.enabled && pfc->enabled &&
!GET_FLAGS(error, DCBX_LOCAL_PFC_ERROR | DCBX_LOCAL_PFC_MISMATCH |
DCBX_REMOTE_PFC_TLV_NOT_FOUND)) {
bp->dcbx_port_params.pfc.enabled = true;
bp->dcbx_port_params.pfc.priority_non_pauseable_mask =
~(pfc->pri_en_bitmap);
} else {
DP(BNX2X_MSG_DCB, "DCBX_LOCAL_PFC_DISABLED\n");
bp->dcbx_port_params.pfc.enabled = false;
bp->dcbx_port_params.pfc.priority_non_pauseable_mask = 0;
}
}
/* maps unmapped priorities to to the same COS as L2 */
static void bnx2x_dcbx_map_nw(struct bnx2x *bp)
{
int i;
u32 unmapped = (1 << MAX_PFC_PRIORITIES) - 1; /* all ones */
u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
u32 nw_prio = 1 << ttp[LLFC_TRAFFIC_TYPE_NW];
struct bnx2x_dcbx_cos_params *cos_params =
bp->dcbx_port_params.ets.cos_params;
/* get unmapped priorities by clearing mapped bits */
for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
unmapped &= ~(1 << ttp[i]);
/* find cos for nw prio and extend it with unmapped */
for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params); i++) {
if (cos_params[i].pri_bitmask & nw_prio) {
/* extend the bitmask with unmapped */
DP(BNX2X_MSG_DCB,
"cos %d extended with 0x%08x\n", i, unmapped);
cos_params[i].pri_bitmask |= unmapped;
break;
}
}
}
static void bnx2x_get_dcbx_drv_param(struct bnx2x *bp,
struct dcbx_features *features,
u32 error)
{
bnx2x_dcbx_get_ap_feature(bp, &features->app, error);
bnx2x_dcbx_get_pfc_feature(bp, &features->pfc, error);
bnx2x_dcbx_get_ets_feature(bp, &features->ets, error);
bnx2x_dcbx_map_nw(bp);
}
#define DCBX_LOCAL_MIB_MAX_TRY_READ (100)
static int bnx2x_dcbx_read_mib(struct bnx2x *bp,
u32 *base_mib_addr,
u32 offset,
int read_mib_type)
{
int max_try_read = 0;
u32 mib_size, prefix_seq_num, suffix_seq_num;
struct lldp_remote_mib *remote_mib ;
struct lldp_local_mib *local_mib;
switch (read_mib_type) {
case DCBX_READ_LOCAL_MIB:
mib_size = sizeof(struct lldp_local_mib);
break;
case DCBX_READ_REMOTE_MIB:
mib_size = sizeof(struct lldp_remote_mib);
break;
default:
return 1; /*error*/
}
offset += BP_PORT(bp) * mib_size;
do {
bnx2x_read_data(bp, base_mib_addr, offset, mib_size);
max_try_read++;
switch (read_mib_type) {
case DCBX_READ_LOCAL_MIB:
local_mib = (struct lldp_local_mib *) base_mib_addr;
prefix_seq_num = local_mib->prefix_seq_num;
suffix_seq_num = local_mib->suffix_seq_num;
break;
case DCBX_READ_REMOTE_MIB:
remote_mib = (struct lldp_remote_mib *) base_mib_addr;
prefix_seq_num = remote_mib->prefix_seq_num;
suffix_seq_num = remote_mib->suffix_seq_num;
break;
default:
return 1; /*error*/
}
} while ((prefix_seq_num != suffix_seq_num) &&
(max_try_read < DCBX_LOCAL_MIB_MAX_TRY_READ));
if (max_try_read >= DCBX_LOCAL_MIB_MAX_TRY_READ) {
BNX2X_ERR("MIB could not be read\n");
return 1;
}
return 0;
}
static void bnx2x_pfc_set_pfc(struct bnx2x *bp)
{
int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
GET_FLAGS(SHMEM2_RD(bp, drv_flags),
1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
if (bp->dcbx_port_params.pfc.enabled &&
(!(bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) || mfw_configured))
/*
* 1. Fills up common PFC structures if required
* 2. Configure NIG, MAC and BRB via the elink
*/
bnx2x_pfc_set(bp);
else
bnx2x_pfc_clear(bp);
}
int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp)
{
struct bnx2x_func_state_params func_params = {NULL};
int rc;
func_params.f_obj = &bp->func_obj;
func_params.cmd = BNX2X_F_CMD_TX_STOP;
__set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
__set_bit(RAMROD_RETRY, &func_params.ramrod_flags);
DP(BNX2X_MSG_DCB, "STOP TRAFFIC\n");
rc = bnx2x_func_state_change(bp, &func_params);
if (rc) {
BNX2X_ERR("Unable to hold traffic for HW configuration\n");
bnx2x_panic();
}
return rc;
}
int bnx2x_dcbx_resume_hw_tx(struct bnx2x *bp)
{
struct bnx2x_func_state_params func_params = {NULL};
struct bnx2x_func_tx_start_params *tx_params =
&func_params.params.tx_start;
int rc;
func_params.f_obj = &bp->func_obj;
func_params.cmd = BNX2X_F_CMD_TX_START;
__set_bit(RAMROD_COMP_WAIT, &func_params.ramrod_flags);
__set_bit(RAMROD_RETRY, &func_params.ramrod_flags);
bnx2x_dcbx_fw_struct(bp, tx_params);
DP(BNX2X_MSG_DCB, "START TRAFFIC\n");
rc = bnx2x_func_state_change(bp, &func_params);
if (rc) {
BNX2X_ERR("Unable to resume traffic after HW configuration\n");
bnx2x_panic();
}
return rc;
}
static void bnx2x_dcbx_2cos_limit_update_ets_config(struct bnx2x *bp)
{
struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
int rc = 0;
if (ets->num_of_cos == 0 || ets->num_of_cos > DCBX_COS_MAX_NUM_E2) {
BNX2X_ERR("Illegal number of COSes %d\n", ets->num_of_cos);
return;
}
/* valid COS entries */
if (ets->num_of_cos == 1) /* no ETS */
return;
/* sanity */
if (((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[0].strict) &&
(DCBX_INVALID_COS_BW == ets->cos_params[0].bw_tbl)) ||
((BNX2X_DCBX_STRICT_INVALID == ets->cos_params[1].strict) &&
(DCBX_INVALID_COS_BW == ets->cos_params[1].bw_tbl))) {
BNX2X_ERR("all COS should have at least bw_limit or strict"
"ets->cos_params[0].strict= %x"
"ets->cos_params[0].bw_tbl= %x"
"ets->cos_params[1].strict= %x"
"ets->cos_params[1].bw_tbl= %x",
ets->cos_params[0].strict,
ets->cos_params[0].bw_tbl,
ets->cos_params[1].strict,
ets->cos_params[1].bw_tbl);
return;
}
/* If we join a group and there is bw_tbl and strict then bw rules */
if ((DCBX_INVALID_COS_BW != ets->cos_params[0].bw_tbl) &&
(DCBX_INVALID_COS_BW != ets->cos_params[1].bw_tbl)) {
u32 bw_tbl_0 = ets->cos_params[0].bw_tbl;
u32 bw_tbl_1 = ets->cos_params[1].bw_tbl;
/* Do not allow 0-100 configuration
* since PBF does not support it
* force 1-99 instead
*/
if (bw_tbl_0 == 0) {
bw_tbl_0 = 1;
bw_tbl_1 = 99;
} else if (bw_tbl_1 == 0) {
bw_tbl_1 = 1;
bw_tbl_0 = 99;
}
bnx2x_ets_bw_limit(&bp->link_params, bw_tbl_0, bw_tbl_1);
} else {
if (ets->cos_params[0].strict == BNX2X_DCBX_STRICT_COS_HIGHEST)
rc = bnx2x_ets_strict(&bp->link_params, 0);
else if (ets->cos_params[1].strict
== BNX2X_DCBX_STRICT_COS_HIGHEST)
rc = bnx2x_ets_strict(&bp->link_params, 1);
if (rc)
BNX2X_ERR("update_ets_params failed\n");
}
}
/*
* In E3B0 the configuration may have more than 2 COS.
*/
static void bnx2x_dcbx_update_ets_config(struct bnx2x *bp)
{
struct bnx2x_dcbx_pg_params *ets = &(bp->dcbx_port_params.ets);
struct bnx2x_ets_params ets_params = { 0 };
u8 i;
ets_params.num_of_cos = ets->num_of_cos;
for (i = 0; i < ets->num_of_cos; i++) {
/* COS is SP */
if (ets->cos_params[i].strict != BNX2X_DCBX_STRICT_INVALID) {
if (ets->cos_params[i].bw_tbl != DCBX_INVALID_COS_BW) {
BNX2X_ERR("COS can't be not BW and not SP\n");
return;
}
ets_params.cos[i].state = bnx2x_cos_state_strict;
ets_params.cos[i].params.sp_params.pri =
ets->cos_params[i].strict;
} else { /* COS is BW */
if (ets->cos_params[i].bw_tbl == DCBX_INVALID_COS_BW) {
BNX2X_ERR("COS can't be not BW and not SP\n");
return;
}
ets_params.cos[i].state = bnx2x_cos_state_bw;
ets_params.cos[i].params.bw_params.bw =
(u8)ets->cos_params[i].bw_tbl;
}
}
/* Configure the ETS in HW */
if (bnx2x_ets_e3b0_config(&bp->link_params, &bp->link_vars,
&ets_params)) {
BNX2X_ERR("bnx2x_ets_e3b0_config failed\n");
bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
}
}
static void bnx2x_dcbx_update_ets_params(struct bnx2x *bp)
{
int mfw_configured = SHMEM2_HAS(bp, drv_flags) &&
GET_FLAGS(SHMEM2_RD(bp, drv_flags),
1 << DRV_FLAGS_DCB_MFW_CONFIGURED);
bnx2x_ets_disabled(&bp->link_params, &bp->link_vars);
if (!bp->dcbx_port_params.ets.enabled ||
((bp->dcbx_error & DCBX_REMOTE_MIB_ERROR) && !mfw_configured))
return;
if (CHIP_IS_E3B0(bp))
bnx2x_dcbx_update_ets_config(bp);
else
bnx2x_dcbx_2cos_limit_update_ets_config(bp);
}
#ifdef BCM_DCBNL
static int bnx2x_dcbx_read_shmem_remote_mib(struct bnx2x *bp)
{
struct lldp_remote_mib remote_mib = {0};
u32 dcbx_remote_mib_offset = SHMEM2_RD(bp, dcbx_remote_mib_offset);
int rc;
DP(BNX2X_MSG_DCB, "dcbx_remote_mib_offset 0x%x\n",
dcbx_remote_mib_offset);
if (SHMEM_DCBX_REMOTE_MIB_NONE == dcbx_remote_mib_offset) {
BNX2X_ERR("FW doesn't support dcbx_remote_mib_offset\n");
return -EINVAL;
}
rc = bnx2x_dcbx_read_mib(bp, (u32 *)&remote_mib, dcbx_remote_mib_offset,
DCBX_READ_REMOTE_MIB);
if (rc) {
BNX2X_ERR("Failed to read remote mib from FW\n");
return rc;
}
/* save features and flags */
bp->dcbx_remote_feat = remote_mib.features;
bp->dcbx_remote_flags = remote_mib.flags;
return 0;
}
#endif
static int bnx2x_dcbx_read_shmem_neg_results(struct bnx2x *bp)
{
struct lldp_local_mib local_mib = {0};
u32 dcbx_neg_res_offset = SHMEM2_RD(bp, dcbx_neg_res_offset);
int rc;
DP(BNX2X_MSG_DCB, "dcbx_neg_res_offset 0x%x\n", dcbx_neg_res_offset);
if (SHMEM_DCBX_NEG_RES_NONE == dcbx_neg_res_offset) {
BNX2X_ERR("FW doesn't support dcbx_neg_res_offset\n");
return -EINVAL;
}
rc = bnx2x_dcbx_read_mib(bp, (u32 *)&local_mib, dcbx_neg_res_offset,
DCBX_READ_LOCAL_MIB);
if (rc) {
BNX2X_ERR("Failed to read local mib from FW\n");
return rc;
}
/* save features and error */
bp->dcbx_local_feat = local_mib.features;
bp->dcbx_error = local_mib.error;
return 0;
}
#ifdef BCM_DCBNL
static inline
u8 bnx2x_dcbx_dcbnl_app_up(struct dcbx_app_priority_entry *ent)
{
u8 pri;
/* Choose the highest priority */
for (pri = MAX_PFC_PRIORITIES - 1; pri > 0; pri--)
if (ent->pri_bitmap & (1 << pri))
break;
return pri;
}
static inline
u8 bnx2x_dcbx_dcbnl_app_idtype(struct dcbx_app_priority_entry *ent)
{
return ((ent->appBitfield & DCBX_APP_ENTRY_SF_MASK) ==
DCBX_APP_SF_PORT) ? DCB_APP_IDTYPE_PORTNUM :
DCB_APP_IDTYPE_ETHTYPE;
}
int bnx2x_dcbnl_update_applist(struct bnx2x *bp, bool delall)
{
int i, err = 0;
for (i = 0; i < DCBX_MAX_APP_PROTOCOL && err == 0; i++) {
struct dcbx_app_priority_entry *ent =
&bp->dcbx_local_feat.app.app_pri_tbl[i];
if (ent->appBitfield & DCBX_APP_ENTRY_VALID) {
u8 up = bnx2x_dcbx_dcbnl_app_up(ent);
/* avoid invalid user-priority */
if (up) {
struct dcb_app app;
app.selector = bnx2x_dcbx_dcbnl_app_idtype(ent);
app.protocol = ent->app_id;
app.priority = delall ? 0 : up;
err = dcb_setapp(bp->dev, &app);
}
}
}
return err;
}
#endif
static inline void bnx2x_dcbx_update_tc_mapping(struct bnx2x *bp)
{
u8 prio, cos;
for (cos = 0; cos < bp->dcbx_port_params.ets.num_of_cos; cos++) {
for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
if (bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask
& (1 << prio)) {
bp->prio_to_cos[prio] = cos;
DP(BNX2X_MSG_DCB,
"tx_mapping %d --> %d\n", prio, cos);
}
}
}
/* setup tc must be called under rtnl lock, but we can't take it here
* as we are handling an attention on a work queue which must be
* flushed at some rtnl-locked contexts (e.g. if down)
*/
bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_SETUP_TC, 0);
}
void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state)
{
switch (state) {
case BNX2X_DCBX_STATE_NEG_RECEIVED:
{
DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_NEG_RECEIVED\n");
#ifdef BCM_DCBNL
/**
* Delete app tlvs from dcbnl before reading new
* negotiation results
*/
bnx2x_dcbnl_update_applist(bp, true);
/* Read remote mib if dcbx is in the FW */
if (bnx2x_dcbx_read_shmem_remote_mib(bp))
return;
#endif
/* Read neg results if dcbx is in the FW */
if (bnx2x_dcbx_read_shmem_neg_results(bp))
return;
bnx2x_dump_dcbx_drv_param(bp, &bp->dcbx_local_feat,
bp->dcbx_error);
bnx2x_get_dcbx_drv_param(bp, &bp->dcbx_local_feat,
bp->dcbx_error);
/* mark DCBX result for PMF migration */
bnx2x_update_drv_flags(bp,
1 << DRV_FLAGS_DCB_CONFIGURED,
1);
#ifdef BCM_DCBNL
/*
* Add new app tlvs to dcbnl
*/
bnx2x_dcbnl_update_applist(bp, false);
#endif
/*
* reconfigure the netdevice with the results of the new
* dcbx negotiation.
*/
bnx2x_dcbx_update_tc_mapping(bp);
/*
* allow other functions to update their netdevices
* accordingly
*/
if (IS_MF(bp))
bnx2x_link_sync_notify(bp);
bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_TX_STOP, 0);
return;
}
case BNX2X_DCBX_STATE_TX_PAUSED:
DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_PAUSED\n");
bnx2x_pfc_set_pfc(bp);
bnx2x_dcbx_update_ets_params(bp);
/* ets may affect cmng configuration: reinit it in hw */
bnx2x_set_local_cmng(bp);
return;
case BNX2X_DCBX_STATE_TX_RELEASED:
DP(BNX2X_MSG_DCB, "BNX2X_DCBX_STATE_TX_RELEASED\n");
bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0);
#ifdef BCM_DCBNL
/*
* Send a notification for the new negotiated parameters
*/
dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
#endif
return;
default:
BNX2X_ERR("Unknown DCBX_STATE\n");
}
}
#define LLDP_ADMIN_MIB_OFFSET(bp) (PORT_MAX*sizeof(struct lldp_params) + \
BP_PORT(bp)*sizeof(struct lldp_admin_mib))
static void bnx2x_dcbx_admin_mib_updated_params(struct bnx2x *bp,
u32 dcbx_lldp_params_offset)
{
struct lldp_admin_mib admin_mib;
u32 i, other_traf_type = PREDEFINED_APP_IDX_MAX, traf_type = 0;
u32 offset = dcbx_lldp_params_offset + LLDP_ADMIN_MIB_OFFSET(bp);
/*shortcuts*/
struct dcbx_features *af = &admin_mib.features;
struct bnx2x_config_dcbx_params *dp = &bp->dcbx_config_params;
memset(&admin_mib, 0, sizeof(struct lldp_admin_mib));
/* Read the data first */
bnx2x_read_data(bp, (u32 *)&admin_mib, offset,
sizeof(struct lldp_admin_mib));
if (bp->dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON)
SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
else
RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_DCBX_ENABLED);
if (dp->overwrite_settings == BNX2X_DCBX_OVERWRITE_SETTINGS_ENABLE) {
RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_CEE_VERSION_MASK);
admin_mib.ver_cfg_flags |=
(dp->admin_dcbx_version << DCBX_CEE_VERSION_SHIFT) &
DCBX_CEE_VERSION_MASK;
af->ets.enabled = (u8)dp->admin_ets_enable;
af->pfc.enabled = (u8)dp->admin_pfc_enable;
/* FOR IEEE dp->admin_tc_supported_tx_enable */
if (dp->admin_ets_configuration_tx_enable)
SET_FLAGS(admin_mib.ver_cfg_flags,
DCBX_ETS_CONFIG_TX_ENABLED);
else
RESET_FLAGS(admin_mib.ver_cfg_flags,
DCBX_ETS_CONFIG_TX_ENABLED);
/* For IEEE admin_ets_recommendation_tx_enable */
if (dp->admin_pfc_tx_enable)
SET_FLAGS(admin_mib.ver_cfg_flags,
DCBX_PFC_CONFIG_TX_ENABLED);
else
RESET_FLAGS(admin_mib.ver_cfg_flags,
DCBX_PFC_CONFIG_TX_ENABLED);
if (dp->admin_application_priority_tx_enable)
SET_FLAGS(admin_mib.ver_cfg_flags,
DCBX_APP_CONFIG_TX_ENABLED);
else
RESET_FLAGS(admin_mib.ver_cfg_flags,
DCBX_APP_CONFIG_TX_ENABLED);
if (dp->admin_ets_willing)
SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
else
RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_ETS_WILLING);
/* For IEEE admin_ets_reco_valid */
if (dp->admin_pfc_willing)
SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
else
RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_PFC_WILLING);
if (dp->admin_app_priority_willing)
SET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
else
RESET_FLAGS(admin_mib.ver_cfg_flags, DCBX_APP_WILLING);
for (i = 0 ; i < DCBX_MAX_NUM_PG_BW_ENTRIES; i++) {
DCBX_PG_BW_SET(af->ets.pg_bw_tbl, i,
(u8)dp->admin_configuration_bw_precentage[i]);
DP(BNX2X_MSG_DCB, "pg_bw_tbl[%d] = %02x\n",
i, DCBX_PG_BW_GET(af->ets.pg_bw_tbl, i));
}
for (i = 0; i < DCBX_MAX_NUM_PRI_PG_ENTRIES; i++) {
DCBX_PRI_PG_SET(af->ets.pri_pg_tbl, i,
(u8)dp->admin_configuration_ets_pg[i]);
DP(BNX2X_MSG_DCB, "pri_pg_tbl[%d] = %02x\n",
i, DCBX_PRI_PG_GET(af->ets.pri_pg_tbl, i));
}
/*For IEEE admin_recommendation_bw_percentage
*For IEEE admin_recommendation_ets_pg */
af->pfc.pri_en_bitmap = (u8)dp->admin_pfc_bitmap;
for (i = 0; i < DCBX_CONFIG_MAX_APP_PROTOCOL; i++) {
if (dp->admin_priority_app_table[i].valid) {
struct bnx2x_admin_priority_app_table *table =
dp->admin_priority_app_table;
if ((ETH_TYPE_FCOE == table[i].app_id) &&
(TRAFFIC_TYPE_ETH == table[i].traffic_type))
traf_type = FCOE_APP_IDX;
else if ((TCP_PORT_ISCSI == table[i].app_id) &&
(TRAFFIC_TYPE_PORT == table[i].traffic_type))
traf_type = ISCSI_APP_IDX;
else
traf_type = other_traf_type++;
af->app.app_pri_tbl[traf_type].app_id =
table[i].app_id;
af->app.app_pri_tbl[traf_type].pri_bitmap =
(u8)(1 << table[i].priority);
af->app.app_pri_tbl[traf_type].appBitfield =
(DCBX_APP_ENTRY_VALID);
af->app.app_pri_tbl[traf_type].appBitfield |=
(TRAFFIC_TYPE_ETH == table[i].traffic_type) ?
DCBX_APP_SF_ETH_TYPE : DCBX_APP_SF_PORT;
}
}
af->app.default_pri = (u8)dp->admin_default_priority;
}
/* Write the data. */
bnx2x_write_data(bp, (u32 *)&admin_mib, offset,
sizeof(struct lldp_admin_mib));
}
void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled)
{
if (!CHIP_IS_E1x(bp)) {
bp->dcb_state = dcb_on;
bp->dcbx_enabled = dcbx_enabled;
} else {
bp->dcb_state = false;
bp->dcbx_enabled = BNX2X_DCBX_ENABLED_INVALID;
}
DP(BNX2X_MSG_DCB, "DCB state [%s:%s]\n",
dcb_on ? "ON" : "OFF",
dcbx_enabled == BNX2X_DCBX_ENABLED_OFF ? "user-mode" :
dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_OFF ? "on-chip static" :
dcbx_enabled == BNX2X_DCBX_ENABLED_ON_NEG_ON ?
"on-chip with negotiation" : "invalid");
}
void bnx2x_dcbx_init_params(struct bnx2x *bp)
{
bp->dcbx_config_params.admin_dcbx_version = 0x0; /* 0 - CEE; 1 - IEEE */
bp->dcbx_config_params.admin_ets_willing = 1;
bp->dcbx_config_params.admin_pfc_willing = 1;
bp->dcbx_config_params.overwrite_settings = 1;
bp->dcbx_config_params.admin_ets_enable = 1;
bp->dcbx_config_params.admin_pfc_enable = 1;
bp->dcbx_config_params.admin_tc_supported_tx_enable = 1;
bp->dcbx_config_params.admin_ets_configuration_tx_enable = 1;
bp->dcbx_config_params.admin_pfc_tx_enable = 1;
bp->dcbx_config_params.admin_application_priority_tx_enable = 1;
bp->dcbx_config_params.admin_ets_reco_valid = 1;
bp->dcbx_config_params.admin_app_priority_willing = 1;
bp->dcbx_config_params.admin_configuration_bw_precentage[0] = 100;
bp->dcbx_config_params.admin_configuration_bw_precentage[1] = 0;
bp->dcbx_config_params.admin_configuration_bw_precentage[2] = 0;
bp->dcbx_config_params.admin_configuration_bw_precentage[3] = 0;
bp->dcbx_config_params.admin_configuration_bw_precentage[4] = 0;
bp->dcbx_config_params.admin_configuration_bw_precentage[5] = 0;
bp->dcbx_config_params.admin_configuration_bw_precentage[6] = 0;
bp->dcbx_config_params.admin_configuration_bw_precentage[7] = 0;
bp->dcbx_config_params.admin_configuration_ets_pg[0] = 0;
bp->dcbx_config_params.admin_configuration_ets_pg[1] = 0;
bp->dcbx_config_params.admin_configuration_ets_pg[2] = 0;
bp->dcbx_config_params.admin_configuration_ets_pg[3] = 0;
bp->dcbx_config_params.admin_configuration_ets_pg[4] = 0;
bp->dcbx_config_params.admin_configuration_ets_pg[5] = 0;
bp->dcbx_config_params.admin_configuration_ets_pg[6] = 0;
bp->dcbx_config_params.admin_configuration_ets_pg[7] = 0;
bp->dcbx_config_params.admin_recommendation_bw_precentage[0] = 100;
bp->dcbx_config_params.admin_recommendation_bw_precentage[1] = 0;