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Diffstat (limited to 'drivers/net/ixgbe/ixgbe_dcb.c')
-rw-r--r--drivers/net/ixgbe/ixgbe_dcb.c349
1 files changed, 0 insertions, 349 deletions
diff --git a/drivers/net/ixgbe/ixgbe_dcb.c b/drivers/net/ixgbe/ixgbe_dcb.c
deleted file mode 100644
index a1562287342..00000000000
--- a/drivers/net/ixgbe/ixgbe_dcb.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/*******************************************************************************
-
- Intel 10 Gigabit PCI Express Linux driver
- Copyright(c) 1999 - 2009 Intel Corporation.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms and conditions of the GNU General Public License,
- version 2, as published by the Free Software Foundation.
-
- This program is distributed in the hope it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- You should have received a copy of the GNU General Public License along with
- this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
-
- The full GNU General Public License is included in this distribution in
- the file called "COPYING".
-
- Contact Information:
- Linux NICS <linux.nics@intel.com>
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
-*******************************************************************************/
-
-
-#include "ixgbe.h"
-#include "ixgbe_type.h"
-#include "ixgbe_dcb.h"
-#include "ixgbe_dcb_82598.h"
-#include "ixgbe_dcb_82599.h"
-
-/**
- * ixgbe_dcb_config - Struct containing DCB settings.
- * @dcb_config: Pointer to DCB config structure
- *
- * This function checks DCB rules for DCB settings.
- * The following rules are checked:
- * 1. The sum of bandwidth percentages of all Bandwidth Groups must total 100%.
- * 2. The sum of bandwidth percentages of all Traffic Classes within a Bandwidth
- * Group must total 100.
- * 3. A Traffic Class should not be set to both Link Strict Priority
- * and Group Strict Priority.
- * 4. Link strict Bandwidth Groups can only have link strict traffic classes
- * with zero bandwidth.
- */
-s32 ixgbe_dcb_check_config(struct ixgbe_dcb_config *dcb_config)
-{
- struct tc_bw_alloc *p;
- s32 ret_val = 0;
- u8 i, j, bw = 0, bw_id;
- u8 bw_sum[2][MAX_BW_GROUP];
- bool link_strict[2][MAX_BW_GROUP];
-
- memset(bw_sum, 0, sizeof(bw_sum));
- memset(link_strict, 0, sizeof(link_strict));
-
- /* First Tx, then Rx */
- for (i = 0; i < 2; i++) {
- /* Check each traffic class for rule violation */
- for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
- p = &dcb_config->tc_config[j].path[i];
-
- bw = p->bwg_percent;
- bw_id = p->bwg_id;
-
- if (bw_id >= MAX_BW_GROUP) {
- ret_val = DCB_ERR_CONFIG;
- goto err_config;
- }
- if (p->prio_type == prio_link) {
- link_strict[i][bw_id] = true;
- /* Link strict should have zero bandwidth */
- if (bw) {
- ret_val = DCB_ERR_LS_BW_NONZERO;
- goto err_config;
- }
- } else if (!bw) {
- /*
- * Traffic classes without link strict
- * should have non-zero bandwidth.
- */
- ret_val = DCB_ERR_TC_BW_ZERO;
- goto err_config;
- }
- bw_sum[i][bw_id] += bw;
- }
-
- bw = 0;
-
- /* Check each bandwidth group for rule violation */
- for (j = 0; j < MAX_BW_GROUP; j++) {
- bw += dcb_config->bw_percentage[i][j];
- /*
- * Sum of bandwidth percentages of all traffic classes
- * within a Bandwidth Group must total 100 except for
- * link strict group (zero bandwidth).
- */
- if (link_strict[i][j]) {
- if (bw_sum[i][j]) {
- /*
- * Link strict group should have zero
- * bandwidth.
- */
- ret_val = DCB_ERR_LS_BWG_NONZERO;
- goto err_config;
- }
- } else if (bw_sum[i][j] != BW_PERCENT &&
- bw_sum[i][j] != 0) {
- ret_val = DCB_ERR_TC_BW;
- goto err_config;
- }
- }
-
- if (bw != BW_PERCENT) {
- ret_val = DCB_ERR_BW_GROUP;
- goto err_config;
- }
- }
-
-err_config:
- return ret_val;
-}
-
-/**
- * ixgbe_dcb_calculate_tc_credits - Calculates traffic class credits
- * @ixgbe_dcb_config: Struct containing DCB settings.
- * @direction: Configuring either Tx or Rx.
- *
- * This function calculates the credits allocated to each traffic class.
- * It should be called only after the rules are checked by
- * ixgbe_dcb_check_config().
- */
-s32 ixgbe_dcb_calculate_tc_credits(struct ixgbe_dcb_config *dcb_config,
- u8 direction)
-{
- struct tc_bw_alloc *p;
- s32 ret_val = 0;
- /* Initialization values default for Tx settings */
- u32 credit_refill = 0;
- u32 credit_max = 0;
- u16 link_percentage = 0;
- u8 bw_percent = 0;
- u8 i;
-
- if (dcb_config == NULL) {
- ret_val = DCB_ERR_CONFIG;
- goto out;
- }
-
- /* Find out the link percentage for each TC first */
- for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
- p = &dcb_config->tc_config[i].path[direction];
- bw_percent = dcb_config->bw_percentage[direction][p->bwg_id];
-
- link_percentage = p->bwg_percent;
- /* Must be careful of integer division for very small nums */
- link_percentage = (link_percentage * bw_percent) / 100;
- if (p->bwg_percent > 0 && link_percentage == 0)
- link_percentage = 1;
-
- /* Save link_percentage for reference */
- p->link_percent = (u8)link_percentage;
-
- /* Calculate credit refill and save it */
- credit_refill = link_percentage * MINIMUM_CREDIT_REFILL;
- p->data_credits_refill = (u16)credit_refill;
-
- /* Calculate maximum credit for the TC */
- credit_max = (link_percentage * MAX_CREDIT) / 100;
-
- /*
- * Adjustment based on rule checking, if the percentage
- * of a TC is too small, the maximum credit may not be
- * enough to send out a jumbo frame in data plane arbitration.
- */
- if (credit_max && (credit_max < MINIMUM_CREDIT_FOR_JUMBO))
- credit_max = MINIMUM_CREDIT_FOR_JUMBO;
-
- if (direction == DCB_TX_CONFIG) {
- /*
- * Adjustment based on rule checking, if the
- * percentage of a TC is too small, the maximum
- * credit may not be enough to send out a TSO
- * packet in descriptor plane arbitration.
- */
- if (credit_max &&
- (credit_max < MINIMUM_CREDIT_FOR_TSO))
- credit_max = MINIMUM_CREDIT_FOR_TSO;
-
- dcb_config->tc_config[i].desc_credits_max =
- (u16)credit_max;
- }
-
- p->data_credits_max = (u16)credit_max;
- }
-
-out:
- return ret_val;
-}
-
-/**
- * ixgbe_dcb_get_tc_stats - Returns status of each traffic class
- * @hw: pointer to hardware structure
- * @stats: pointer to statistics structure
- * @tc_count: Number of elements in bwg_array.
- *
- * This function returns the status data for each of the Traffic Classes in use.
- */
-s32 ixgbe_dcb_get_tc_stats(struct ixgbe_hw *hw, struct ixgbe_hw_stats *stats,
- u8 tc_count)
-{
- s32 ret = 0;
- if (hw->mac.type == ixgbe_mac_82598EB)
- ret = ixgbe_dcb_get_tc_stats_82598(hw, stats, tc_count);
- else if (hw->mac.type == ixgbe_mac_82599EB)
- ret = ixgbe_dcb_get_tc_stats_82599(hw, stats, tc_count);
- return ret;
-}
-
-/**
- * ixgbe_dcb_get_pfc_stats - Returns CBFC status of each traffic class
- * hw - pointer to hardware structure
- * stats - pointer to statistics structure
- * tc_count - Number of elements in bwg_array.
- *
- * This function returns the CBFC status data for each of the Traffic Classes.
- */
-s32 ixgbe_dcb_get_pfc_stats(struct ixgbe_hw *hw, struct ixgbe_hw_stats *stats,
- u8 tc_count)
-{
- s32 ret = 0;
- if (hw->mac.type == ixgbe_mac_82598EB)
- ret = ixgbe_dcb_get_pfc_stats_82598(hw, stats, tc_count);
- else if (hw->mac.type == ixgbe_mac_82599EB)
- ret = ixgbe_dcb_get_pfc_stats_82599(hw, stats, tc_count);
- return ret;
-}
-
-/**
- * ixgbe_dcb_config_rx_arbiter - Config Rx arbiter
- * @hw: pointer to hardware structure
- * @dcb_config: pointer to ixgbe_dcb_config structure
- *
- * Configure Rx Data Arbiter and credits for each traffic class.
- */
-s32 ixgbe_dcb_config_rx_arbiter(struct ixgbe_hw *hw,
- struct ixgbe_dcb_config *dcb_config)
-{
- s32 ret = 0;
- if (hw->mac.type == ixgbe_mac_82598EB)
- ret = ixgbe_dcb_config_rx_arbiter_82598(hw, dcb_config);
- else if (hw->mac.type == ixgbe_mac_82599EB)
- ret = ixgbe_dcb_config_rx_arbiter_82599(hw, dcb_config);
- return ret;
-}
-
-/**
- * ixgbe_dcb_config_tx_desc_arbiter - Config Tx Desc arbiter
- * @hw: pointer to hardware structure
- * @dcb_config: pointer to ixgbe_dcb_config structure
- *
- * Configure Tx Descriptor Arbiter and credits for each traffic class.
- */
-s32 ixgbe_dcb_config_tx_desc_arbiter(struct ixgbe_hw *hw,
- struct ixgbe_dcb_config *dcb_config)
-{
- s32 ret = 0;
- if (hw->mac.type == ixgbe_mac_82598EB)
- ret = ixgbe_dcb_config_tx_desc_arbiter_82598(hw, dcb_config);
- else if (hw->mac.type == ixgbe_mac_82599EB)
- ret = ixgbe_dcb_config_tx_desc_arbiter_82599(hw, dcb_config);
- return ret;
-}
-
-/**
- * ixgbe_dcb_config_tx_data_arbiter - Config Tx data arbiter
- * @hw: pointer to hardware structure
- * @dcb_config: pointer to ixgbe_dcb_config structure
- *
- * Configure Tx Data Arbiter and credits for each traffic class.
- */
-s32 ixgbe_dcb_config_tx_data_arbiter(struct ixgbe_hw *hw,
- struct ixgbe_dcb_config *dcb_config)
-{
- s32 ret = 0;
- if (hw->mac.type == ixgbe_mac_82598EB)
- ret = ixgbe_dcb_config_tx_data_arbiter_82598(hw, dcb_config);
- else if (hw->mac.type == ixgbe_mac_82599EB)
- ret = ixgbe_dcb_config_tx_data_arbiter_82599(hw, dcb_config);
- return ret;
-}
-
-/**
- * ixgbe_dcb_config_pfc - Config priority flow control
- * @hw: pointer to hardware structure
- * @dcb_config: pointer to ixgbe_dcb_config structure
- *
- * Configure Priority Flow Control for each traffic class.
- */
-s32 ixgbe_dcb_config_pfc(struct ixgbe_hw *hw,
- struct ixgbe_dcb_config *dcb_config)
-{
- s32 ret = 0;
- if (hw->mac.type == ixgbe_mac_82598EB)
- ret = ixgbe_dcb_config_pfc_82598(hw, dcb_config);
- else if (hw->mac.type == ixgbe_mac_82599EB)
- ret = ixgbe_dcb_config_pfc_82599(hw, dcb_config);
- return ret;
-}
-
-/**
- * ixgbe_dcb_config_tc_stats - Config traffic class statistics
- * @hw: pointer to hardware structure
- *
- * Configure queue statistics registers, all queues belonging to same traffic
- * class uses a single set of queue statistics counters.
- */
-s32 ixgbe_dcb_config_tc_stats(struct ixgbe_hw *hw)
-{
- s32 ret = 0;
- if (hw->mac.type == ixgbe_mac_82598EB)
- ret = ixgbe_dcb_config_tc_stats_82598(hw);
- else if (hw->mac.type == ixgbe_mac_82599EB)
- ret = ixgbe_dcb_config_tc_stats_82599(hw);
- return ret;
-}
-
-/**
- * ixgbe_dcb_hw_config - Config and enable DCB
- * @hw: pointer to hardware structure
- * @dcb_config: pointer to ixgbe_dcb_config structure
- *
- * Configure dcb settings and enable dcb mode.
- */
-s32 ixgbe_dcb_hw_config(struct ixgbe_hw *hw,
- struct ixgbe_dcb_config *dcb_config)
-{
- s32 ret = 0;
- if (hw->mac.type == ixgbe_mac_82598EB)
- ret = ixgbe_dcb_hw_config_82598(hw, dcb_config);
- else if (hw->mac.type == ixgbe_mac_82599EB)
- ret = ixgbe_dcb_hw_config_82599(hw, dcb_config);
- return ret;
-}
-
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