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Diffstat (limited to 'drivers/net/ixgbe/ixgbe_dcb.c')
-rw-r--r--drivers/net/ixgbe/ixgbe_dcb.c320
1 files changed, 0 insertions, 320 deletions
diff --git a/drivers/net/ixgbe/ixgbe_dcb.c b/drivers/net/ixgbe/ixgbe_dcb.c
deleted file mode 100644
index 9d88c31487bc..000000000000
--- a/drivers/net/ixgbe/ixgbe_dcb.c
+++ /dev/null
@@ -1,320 +0,0 @@
-/*******************************************************************************
-
- Intel 10 Gigabit PCI Express Linux driver
- Copyright(c) 1999 - 2011 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_ieee_credits - This calculates the ieee traffic class
- * credits from the configured bandwidth percentages. Credits
- * are the smallest unit programmable into the underlying
- * hardware. The IEEE 802.1Qaz specification do not use bandwidth
- * groups so this is much simplified from the CEE case.
- */
-s32 ixgbe_ieee_credits(__u8 *bw, __u16 *refill, __u16 *max, int max_frame)
-{
- int min_percent = 100;
- int min_credit, multiplier;
- int i;
-
- min_credit = ((max_frame / 2) + DCB_CREDIT_QUANTUM - 1) /
- DCB_CREDIT_QUANTUM;
-
- for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
- if (bw[i] < min_percent && bw[i])
- min_percent = bw[i];
- }
-
- multiplier = (min_credit / min_percent) + 1;
-
- /* Find out the hw credits for each TC */
- for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
- int val = min(bw[i] * multiplier, MAX_CREDIT_REFILL);
-
- if (val < min_credit)
- val = min_credit;
- refill[i] = val;
-
- max[i] = bw[i] ? (bw[i] * MAX_CREDIT)/100 : min_credit;
- }
- return 0;
-}
-
-/**
- * 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_hw *hw,
- struct ixgbe_dcb_config *dcb_config,
- int max_frame, u8 direction)
-{
- struct tc_bw_alloc *p;
- int min_credit;
- int min_multiplier;
- int min_percent = 100;
- 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;
- }
-
- min_credit = ((max_frame / 2) + DCB_CREDIT_QUANTUM - 1) /
- DCB_CREDIT_QUANTUM;
-
- /* Find smallest link percentage */
- 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;
-
- link_percentage = (link_percentage * bw_percent) / 100;
-
- if (link_percentage && link_percentage < min_percent)
- min_percent = link_percentage;
- }
-
- /*
- * The ratio between traffic classes will control the bandwidth
- * percentages seen on the wire. To calculate this ratio we use
- * a multiplier. It is required that the refill credits must be
- * larger than the max frame size so here we find the smallest
- * multiplier that will allow all bandwidth percentages to be
- * greater than the max frame size.
- */
- min_multiplier = (min_credit / min_percent) + 1;
-
- /* 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 ratio using multiplier */
- credit_refill = min(link_percentage * min_multiplier,
- MAX_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 < min_credit))
- credit_max = min_credit;
-
- 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 ((hw->mac.type == ixgbe_mac_82598EB) &&
- 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;
-}
-
-void ixgbe_dcb_unpack_pfc(struct ixgbe_dcb_config *cfg, u8 *pfc_en)
-{
- int i;
-
- *pfc_en = 0;
- for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
- *pfc_en |= (cfg->tc_config[i].dcb_pfc & 0xF) << i;
-}
-
-void ixgbe_dcb_unpack_refill(struct ixgbe_dcb_config *cfg, int direction,
- u16 *refill)
-{
- struct tc_bw_alloc *p;
- int i;
-
- for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
- p = &cfg->tc_config[i].path[direction];
- refill[i] = p->data_credits_refill;
- }
-}
-
-void ixgbe_dcb_unpack_max(struct ixgbe_dcb_config *cfg, u16 *max)
-{
- int i;
-
- for (i = 0; i < MAX_TRAFFIC_CLASS; i++)
- max[i] = cfg->tc_config[i].desc_credits_max;
-}
-
-void ixgbe_dcb_unpack_bwgid(struct ixgbe_dcb_config *cfg, int direction,
- u8 *bwgid)
-{
- struct tc_bw_alloc *p;
- int i;
-
- for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
- p = &cfg->tc_config[i].path[direction];
- bwgid[i] = p->bwg_id;
- }
-}
-
-void ixgbe_dcb_unpack_prio(struct ixgbe_dcb_config *cfg, int direction,
- u8 *ptype)
-{
- struct tc_bw_alloc *p;
- int i;
-
- for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
- p = &cfg->tc_config[i].path[direction];
- ptype[i] = p->prio_type;
- }
-}
-
-/**
- * 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;
- u8 pfc_en;
- u8 ptype[MAX_TRAFFIC_CLASS];
- u8 bwgid[MAX_TRAFFIC_CLASS];
- u16 refill[MAX_TRAFFIC_CLASS];
- u16 max[MAX_TRAFFIC_CLASS];
- /* CEE does not define a priority to tc mapping so map 1:1 */
- u8 prio_tc[MAX_TRAFFIC_CLASS] = {0, 1, 2, 3, 4, 5, 6, 7};
-
- /* Unpack CEE standard containers */
- ixgbe_dcb_unpack_pfc(dcb_config, &pfc_en);
- ixgbe_dcb_unpack_refill(dcb_config, DCB_TX_CONFIG, refill);
- ixgbe_dcb_unpack_max(dcb_config, max);
- ixgbe_dcb_unpack_bwgid(dcb_config, DCB_TX_CONFIG, bwgid);
- ixgbe_dcb_unpack_prio(dcb_config, DCB_TX_CONFIG, ptype);
-
- switch (hw->mac.type) {
- case ixgbe_mac_82598EB:
- ret = ixgbe_dcb_hw_config_82598(hw, pfc_en, refill, max,
- bwgid, ptype);
- break;
- case ixgbe_mac_82599EB:
- case ixgbe_mac_X540:
- ret = ixgbe_dcb_hw_config_82599(hw, pfc_en, refill, max,
- bwgid, ptype, prio_tc);
- break;
- default:
- break;
- }
- return ret;
-}
-
-/* Helper routines to abstract HW specifics from DCB netlink ops */
-s32 ixgbe_dcb_hw_pfc_config(struct ixgbe_hw *hw, u8 pfc_en)
-{
- int ret = -EINVAL;
-
- switch (hw->mac.type) {
- case ixgbe_mac_82598EB:
- ret = ixgbe_dcb_config_pfc_82598(hw, pfc_en);
- break;
- case ixgbe_mac_82599EB:
- case ixgbe_mac_X540:
- ret = ixgbe_dcb_config_pfc_82599(hw, pfc_en);
- break;
- default:
- break;
- }
- return ret;
-}
-
-s32 ixgbe_dcb_hw_ets_config(struct ixgbe_hw *hw,
- u16 *refill, u16 *max, u8 *bwg_id,
- u8 *prio_type, u8 *prio_tc)
-{
- switch (hw->mac.type) {
- case ixgbe_mac_82598EB:
- ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max,
- prio_type);
- ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max,
- bwg_id, prio_type);
- ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max,
- bwg_id, prio_type);
- break;
- case ixgbe_mac_82599EB:
- case ixgbe_mac_X540:
- ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max,
- bwg_id, prio_type, prio_tc);
- ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max,
- bwg_id, prio_type);
- ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, bwg_id,
- prio_type, prio_tc);
- break;
- default:
- break;
- }
- return 0;
-}
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