freebsd-dev/sys/dev/ixgbe/ixgbe_dcb_82599.c
Eric Joyner 7d48aa4c72 ixgbe(4): Update shared code, add support for X552 1G, fix bug
This patch will:

- Update ixgbe shared code
- Add support for Intel(R) Ethernet Connection X552 1000BASE-T
- Add error handling for link state check preventing VF from stopping traffic
  after changing PF's MTU value

Submitted by: Krzysztof Galazka <krzysztof.galazka@intel.com>
Reviewed by: Intel Networking
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D13885
2018-03-19 20:55:05 +00:00

613 lines
18 KiB
C

/******************************************************************************
SPDX-License-Identifier: BSD-3-Clause
Copyright (c) 2001-2017, Intel Corporation
All rights reserved.
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modification, are permitted provided that the following conditions are met:
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******************************************************************************/
/*$FreeBSD$*/
#include "ixgbe_type.h"
#include "ixgbe_dcb.h"
#include "ixgbe_dcb_82599.h"
/**
* ixgbe_dcb_get_tc_stats_82599 - Returns status for 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_82599(struct ixgbe_hw *hw,
struct ixgbe_hw_stats *stats,
u8 tc_count)
{
int tc;
DEBUGFUNC("dcb_get_tc_stats");
if (tc_count > IXGBE_DCB_MAX_TRAFFIC_CLASS)
return IXGBE_ERR_PARAM;
/* Statistics pertaining to each traffic class */
for (tc = 0; tc < tc_count; tc++) {
/* Transmitted Packets */
stats->qptc[tc] += IXGBE_READ_REG(hw, IXGBE_QPTC(tc));
/* Transmitted Bytes (read low first to prevent missed carry) */
stats->qbtc[tc] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(tc));
stats->qbtc[tc] +=
(((u64)(IXGBE_READ_REG(hw, IXGBE_QBTC_H(tc)))) << 32);
/* Received Packets */
stats->qprc[tc] += IXGBE_READ_REG(hw, IXGBE_QPRC(tc));
/* Received Bytes (read low first to prevent missed carry) */
stats->qbrc[tc] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(tc));
stats->qbrc[tc] +=
(((u64)(IXGBE_READ_REG(hw, IXGBE_QBRC_H(tc)))) << 32);
/* Received Dropped Packet */
stats->qprdc[tc] += IXGBE_READ_REG(hw, IXGBE_QPRDC(tc));
}
return IXGBE_SUCCESS;
}
/**
* ixgbe_dcb_get_pfc_stats_82599 - Return CBFC status data
* @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_82599(struct ixgbe_hw *hw,
struct ixgbe_hw_stats *stats,
u8 tc_count)
{
int tc;
DEBUGFUNC("dcb_get_pfc_stats");
if (tc_count > IXGBE_DCB_MAX_TRAFFIC_CLASS)
return IXGBE_ERR_PARAM;
for (tc = 0; tc < tc_count; tc++) {
/* Priority XOFF Transmitted */
stats->pxofftxc[tc] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(tc));
/* Priority XOFF Received */
stats->pxoffrxc[tc] += IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(tc));
}
return IXGBE_SUCCESS;
}
/**
* ixgbe_dcb_config_rx_arbiter_82599 - Config Rx Data arbiter
* @hw: pointer to hardware structure
* @refill: refill credits index by traffic class
* @max: max credits index by traffic class
* @bwg_id: bandwidth grouping indexed by traffic class
* @tsa: transmission selection algorithm indexed by traffic class
* @map: priority to tc assignments indexed by priority
*
* Configure Rx Packet Arbiter and credits for each traffic class.
*/
s32 ixgbe_dcb_config_rx_arbiter_82599(struct ixgbe_hw *hw, u16 *refill,
u16 *max, u8 *bwg_id, u8 *tsa,
u8 *map)
{
u32 reg = 0;
u32 credit_refill = 0;
u32 credit_max = 0;
u8 i = 0;
/*
* Disable the arbiter before changing parameters
* (always enable recycle mode; WSP)
*/
reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC | IXGBE_RTRPCS_ARBDIS;
IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
/*
* map all UPs to TCs. up_to_tc_bitmap for each TC has corresponding
* bits sets for the UPs that needs to be mappped to that TC.
* e.g if priorities 6 and 7 are to be mapped to a TC then the
* up_to_tc_bitmap value for that TC will be 11000000 in binary.
*/
reg = 0;
for (i = 0; i < IXGBE_DCB_MAX_USER_PRIORITY; i++)
reg |= (map[i] << (i * IXGBE_RTRUP2TC_UP_SHIFT));
IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg);
/* Configure traffic class credits and priority */
for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
credit_refill = refill[i];
credit_max = max[i];
reg = credit_refill | (credit_max << IXGBE_RTRPT4C_MCL_SHIFT);
reg |= (u32)(bwg_id[i]) << IXGBE_RTRPT4C_BWG_SHIFT;
if (tsa[i] == ixgbe_dcb_tsa_strict)
reg |= IXGBE_RTRPT4C_LSP;
IXGBE_WRITE_REG(hw, IXGBE_RTRPT4C(i), reg);
}
/*
* Configure Rx packet plane (recycle mode; WSP) and
* enable arbiter
*/
reg = IXGBE_RTRPCS_RRM | IXGBE_RTRPCS_RAC;
IXGBE_WRITE_REG(hw, IXGBE_RTRPCS, reg);
return IXGBE_SUCCESS;
}
/**
* ixgbe_dcb_config_tx_desc_arbiter_82599 - Config Tx Desc. arbiter
* @hw: pointer to hardware structure
* @refill: refill credits index by traffic class
* @max: max credits index by traffic class
* @bwg_id: bandwidth grouping indexed by traffic class
* @tsa: transmission selection algorithm indexed by traffic class
*
* Configure Tx Descriptor Arbiter and credits for each traffic class.
*/
s32 ixgbe_dcb_config_tx_desc_arbiter_82599(struct ixgbe_hw *hw, u16 *refill,
u16 *max, u8 *bwg_id, u8 *tsa)
{
u32 reg, max_credits;
u8 i;
/* Clear the per-Tx queue credits; we use per-TC instead */
for (i = 0; i < 128; i++) {
IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
IXGBE_WRITE_REG(hw, IXGBE_RTTDT1C, 0);
}
/* Configure traffic class credits and priority */
for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
max_credits = max[i];
reg = max_credits << IXGBE_RTTDT2C_MCL_SHIFT;
reg |= refill[i];
reg |= (u32)(bwg_id[i]) << IXGBE_RTTDT2C_BWG_SHIFT;
if (tsa[i] == ixgbe_dcb_tsa_group_strict_cee)
reg |= IXGBE_RTTDT2C_GSP;
if (tsa[i] == ixgbe_dcb_tsa_strict)
reg |= IXGBE_RTTDT2C_LSP;
IXGBE_WRITE_REG(hw, IXGBE_RTTDT2C(i), reg);
}
/*
* Configure Tx descriptor plane (recycle mode; WSP) and
* enable arbiter
*/
reg = IXGBE_RTTDCS_TDPAC | IXGBE_RTTDCS_TDRM;
IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
return IXGBE_SUCCESS;
}
/**
* ixgbe_dcb_config_tx_data_arbiter_82599 - Config Tx Data arbiter
* @hw: pointer to hardware structure
* @refill: refill credits index by traffic class
* @max: max credits index by traffic class
* @bwg_id: bandwidth grouping indexed by traffic class
* @tsa: transmission selection algorithm indexed by traffic class
* @map: priority to tc assignments indexed by priority
*
* Configure Tx Packet Arbiter and credits for each traffic class.
*/
s32 ixgbe_dcb_config_tx_data_arbiter_82599(struct ixgbe_hw *hw, u16 *refill,
u16 *max, u8 *bwg_id, u8 *tsa,
u8 *map)
{
u32 reg;
u8 i;
/*
* Disable the arbiter before changing parameters
* (always enable recycle mode; SP; arb delay)
*/
reg = IXGBE_RTTPCS_TPPAC | IXGBE_RTTPCS_TPRM |
(IXGBE_RTTPCS_ARBD_DCB << IXGBE_RTTPCS_ARBD_SHIFT) |
IXGBE_RTTPCS_ARBDIS;
IXGBE_WRITE_REG(hw, IXGBE_RTTPCS, reg);
/*
* map all UPs to TCs. up_to_tc_bitmap for each TC has corresponding
* bits sets for the UPs that needs to be mappped to that TC.
* e.g if priorities 6 and 7 are to be mapped to a TC then the
* up_to_tc_bitmap value for that TC will be 11000000 in binary.
*/
reg = 0;
for (i = 0; i < IXGBE_DCB_MAX_USER_PRIORITY; i++)
reg |= (map[i] << (i * IXGBE_RTTUP2TC_UP_SHIFT));
IXGBE_WRITE_REG(hw, IXGBE_RTTUP2TC, reg);
/* Configure traffic class credits and priority */
for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
reg = refill[i];
reg |= (u32)(max[i]) << IXGBE_RTTPT2C_MCL_SHIFT;
reg |= (u32)(bwg_id[i]) << IXGBE_RTTPT2C_BWG_SHIFT;
if (tsa[i] == ixgbe_dcb_tsa_group_strict_cee)
reg |= IXGBE_RTTPT2C_GSP;
if (tsa[i] == ixgbe_dcb_tsa_strict)
reg |= IXGBE_RTTPT2C_LSP;
IXGBE_WRITE_REG(hw, IXGBE_RTTPT2C(i), reg);
}
/*
* Configure Tx packet plane (recycle mode; SP; arb delay) and
* enable arbiter
*/
reg = IXGBE_RTTPCS_TPPAC | IXGBE_RTTPCS_TPRM |
(IXGBE_RTTPCS_ARBD_DCB << IXGBE_RTTPCS_ARBD_SHIFT);
IXGBE_WRITE_REG(hw, IXGBE_RTTPCS, reg);
return IXGBE_SUCCESS;
}
/**
* ixgbe_dcb_config_pfc_82599 - Configure priority flow control
* @hw: pointer to hardware structure
* @pfc_en: enabled pfc bitmask
* @map: priority to tc assignments indexed by priority
*
* Configure Priority Flow Control (PFC) for each traffic class.
*/
s32 ixgbe_dcb_config_pfc_82599(struct ixgbe_hw *hw, u8 pfc_en, u8 *map)
{
u32 i, j, fcrtl, reg;
u8 max_tc = 0;
/* Enable Transmit Priority Flow Control */
IXGBE_WRITE_REG(hw, IXGBE_FCCFG, IXGBE_FCCFG_TFCE_PRIORITY);
/* Enable Receive Priority Flow Control */
reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
reg |= IXGBE_MFLCN_DPF;
/*
* X540 supports per TC Rx priority flow control. So
* clear all TCs and only enable those that should be
* enabled.
*/
reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
if (hw->mac.type >= ixgbe_mac_X540)
reg |= pfc_en << IXGBE_MFLCN_RPFCE_SHIFT;
if (pfc_en)
reg |= IXGBE_MFLCN_RPFCE;
IXGBE_WRITE_REG(hw, IXGBE_MFLCN, reg);
for (i = 0; i < IXGBE_DCB_MAX_USER_PRIORITY; i++) {
if (map[i] > max_tc)
max_tc = map[i];
}
/* Configure PFC Tx thresholds per TC */
for (i = 0; i <= max_tc; i++) {
int enabled = 0;
for (j = 0; j < IXGBE_DCB_MAX_USER_PRIORITY; j++) {
if ((map[j] == i) && (pfc_en & (1 << j))) {
enabled = 1;
break;
}
}
if (enabled) {
reg = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE;
IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
} else {
/*
* In order to prevent Tx hangs when the internal Tx
* switch is enabled we must set the high water mark
* to the Rx packet buffer size - 24KB. This allows
* the Tx switch to function even under heavy Rx
* workloads.
*/
reg = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 24576;
IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
}
IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), reg);
}
for (; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), 0);
}
/* Configure pause time (2 TCs per register) */
reg = hw->fc.pause_time | (hw->fc.pause_time << 16);
for (i = 0; i < (IXGBE_DCB_MAX_TRAFFIC_CLASS / 2); i++)
IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
/* Configure flow control refresh threshold value */
IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
return IXGBE_SUCCESS;
}
/**
* ixgbe_dcb_config_tc_stats_82599 - Config traffic class statistics
* @hw: pointer to hardware structure
* @dcb_config: pointer to ixgbe_dcb_config 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_82599(struct ixgbe_hw *hw,
struct ixgbe_dcb_config *dcb_config)
{
u32 reg = 0;
u8 i = 0;
u8 tc_count = 8;
bool vt_mode = FALSE;
if (dcb_config != NULL) {
tc_count = dcb_config->num_tcs.pg_tcs;
vt_mode = dcb_config->vt_mode;
}
if (!((tc_count == 8 && vt_mode == FALSE) || tc_count == 4))
return IXGBE_ERR_PARAM;
if (tc_count == 8 && vt_mode == FALSE) {
/*
* Receive Queues stats setting
* 32 RQSMR registers, each configuring 4 queues.
*
* Set all 16 queues of each TC to the same stat
* with TC 'n' going to stat 'n'.
*/
for (i = 0; i < 32; i++) {
reg = 0x01010101 * (i / 4);
IXGBE_WRITE_REG(hw, IXGBE_RQSMR(i), reg);
}
/*
* Transmit Queues stats setting
* 32 TQSM registers, each controlling 4 queues.
*
* Set all queues of each TC to the same stat
* with TC 'n' going to stat 'n'.
* Tx queues are allocated non-uniformly to TCs:
* 32, 32, 16, 16, 8, 8, 8, 8.
*/
for (i = 0; i < 32; i++) {
if (i < 8)
reg = 0x00000000;
else if (i < 16)
reg = 0x01010101;
else if (i < 20)
reg = 0x02020202;
else if (i < 24)
reg = 0x03030303;
else if (i < 26)
reg = 0x04040404;
else if (i < 28)
reg = 0x05050505;
else if (i < 30)
reg = 0x06060606;
else
reg = 0x07070707;
IXGBE_WRITE_REG(hw, IXGBE_TQSM(i), reg);
}
} else if (tc_count == 4 && vt_mode == FALSE) {
/*
* Receive Queues stats setting
* 32 RQSMR registers, each configuring 4 queues.
*
* Set all 16 queues of each TC to the same stat
* with TC 'n' going to stat 'n'.
*/
for (i = 0; i < 32; i++) {
if (i % 8 > 3)
/* In 4 TC mode, odd 16-queue ranges are
* not used.
*/
continue;
reg = 0x01010101 * (i / 8);
IXGBE_WRITE_REG(hw, IXGBE_RQSMR(i), reg);
}
/*
* Transmit Queues stats setting
* 32 TQSM registers, each controlling 4 queues.
*
* Set all queues of each TC to the same stat
* with TC 'n' going to stat 'n'.
* Tx queues are allocated non-uniformly to TCs:
* 64, 32, 16, 16.
*/
for (i = 0; i < 32; i++) {
if (i < 16)
reg = 0x00000000;
else if (i < 24)
reg = 0x01010101;
else if (i < 28)
reg = 0x02020202;
else
reg = 0x03030303;
IXGBE_WRITE_REG(hw, IXGBE_TQSM(i), reg);
}
} else if (tc_count == 4 && vt_mode == TRUE) {
/*
* Receive Queues stats setting
* 32 RQSMR registers, each configuring 4 queues.
*
* Queue Indexing in 32 VF with DCB mode maps 4 TC's to each
* pool. Set all 32 queues of each TC across pools to the same
* stat with TC 'n' going to stat 'n'.
*/
for (i = 0; i < 32; i++)
IXGBE_WRITE_REG(hw, IXGBE_RQSMR(i), 0x03020100);
/*
* Transmit Queues stats setting
* 32 TQSM registers, each controlling 4 queues.
*
* Queue Indexing in 32 VF with DCB mode maps 4 TC's to each
* pool. Set all 32 queues of each TC across pools to the same
* stat with TC 'n' going to stat 'n'.
*/
for (i = 0; i < 32; i++)
IXGBE_WRITE_REG(hw, IXGBE_TQSM(i), 0x03020100);
}
return IXGBE_SUCCESS;
}
/**
* ixgbe_dcb_config_82599 - Configure general DCB parameters
* @hw: pointer to hardware structure
* @dcb_config: pointer to ixgbe_dcb_config structure
*
* Configure general DCB parameters.
*/
s32 ixgbe_dcb_config_82599(struct ixgbe_hw *hw,
struct ixgbe_dcb_config *dcb_config)
{
u32 reg;
u32 q;
/* Disable the Tx desc arbiter so that MTQC can be changed */
reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
reg |= IXGBE_RTTDCS_ARBDIS;
IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
reg = IXGBE_READ_REG(hw, IXGBE_MRQC);
if (dcb_config->num_tcs.pg_tcs == 8) {
/* Enable DCB for Rx with 8 TCs */
switch (reg & IXGBE_MRQC_MRQE_MASK) {
case 0:
case IXGBE_MRQC_RT4TCEN:
/* RSS disabled cases */
reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
IXGBE_MRQC_RT8TCEN;
break;
case IXGBE_MRQC_RSSEN:
case IXGBE_MRQC_RTRSS4TCEN:
/* RSS enabled cases */
reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
IXGBE_MRQC_RTRSS8TCEN;
break;
default:
/*
* Unsupported value, assume stale data,
* overwrite no RSS
*/
ASSERT(0);
reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
IXGBE_MRQC_RT8TCEN;
}
}
if (dcb_config->num_tcs.pg_tcs == 4) {
/* We support both VT-on and VT-off with 4 TCs. */
if (dcb_config->vt_mode)
reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
IXGBE_MRQC_VMDQRT4TCEN;
else
reg = (reg & ~IXGBE_MRQC_MRQE_MASK) |
IXGBE_MRQC_RTRSS4TCEN;
}
IXGBE_WRITE_REG(hw, IXGBE_MRQC, reg);
/* Enable DCB for Tx with 8 TCs */
if (dcb_config->num_tcs.pg_tcs == 8)
reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
else {
/* We support both VT-on and VT-off with 4 TCs. */
reg = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
if (dcb_config->vt_mode)
reg |= IXGBE_MTQC_VT_ENA;
}
IXGBE_WRITE_REG(hw, IXGBE_MTQC, reg);
/* Disable drop for all queues */
for (q = 0; q < 128; q++)
IXGBE_WRITE_REG(hw, IXGBE_QDE,
(IXGBE_QDE_WRITE | (q << IXGBE_QDE_IDX_SHIFT)));
/* Enable the Tx desc arbiter */
reg = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
reg &= ~IXGBE_RTTDCS_ARBDIS;
IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, reg);
/* Enable Security TX Buffer IFG for DCB */
reg = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
reg |= IXGBE_SECTX_DCB;
IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, reg);
return IXGBE_SUCCESS;
}
/**
* ixgbe_dcb_hw_config_82599 - Configure and enable DCB
* @hw: pointer to hardware structure
* @link_speed: unused
* @refill: refill credits index by traffic class
* @max: max credits index by traffic class
* @bwg_id: bandwidth grouping indexed by traffic class
* @tsa: transmission selection algorithm indexed by traffic class
* @map: priority to tc assignments indexed by priority
*
* Configure dcb settings and enable dcb mode.
*/
s32 ixgbe_dcb_hw_config_82599(struct ixgbe_hw *hw, int link_speed,
u16 *refill, u16 *max, u8 *bwg_id, u8 *tsa,
u8 *map)
{
UNREFERENCED_1PARAMETER(link_speed);
ixgbe_dcb_config_rx_arbiter_82599(hw, refill, max, bwg_id, tsa,
map);
ixgbe_dcb_config_tx_desc_arbiter_82599(hw, refill, max, bwg_id,
tsa);
ixgbe_dcb_config_tx_data_arbiter_82599(hw, refill, max, bwg_id,
tsa, map);
return IXGBE_SUCCESS;
}