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/*
* Copyright (c) 2016-2017 Hisilicon Limited.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include "hclge_main.h"
#include "hclge_tm.h"
#include "hnae3.h"
#define BW_PERCENT 100
static int hclge_ieee_ets_to_tm_info(struct hclge_dev *hdev,
struct ieee_ets *ets)
{
u8 i;
for (i = 0; i < HNAE3_MAX_TC; i++) {
switch (ets->tc_tsa[i]) {
case IEEE_8021QAZ_TSA_STRICT:
hdev->tm_info.tc_info[i].tc_sch_mode =
HCLGE_SCH_MODE_SP;
hdev->tm_info.pg_info[0].tc_dwrr[i] = 0;
break;
case IEEE_8021QAZ_TSA_ETS:
hdev->tm_info.tc_info[i].tc_sch_mode =
HCLGE_SCH_MODE_DWRR;
hdev->tm_info.pg_info[0].tc_dwrr[i] =
ets->tc_tx_bw[i];
break;
default:
/* Hardware only supports SP (strict priority)
* or ETS (enhanced transmission selection)
* algorithms, if we receive some other value
* from dcbnl, then throw an error.
*/
return -EINVAL;
}
}
return hclge_tm_prio_tc_info_update(hdev, ets->prio_tc);
}
static void hclge_tm_info_to_ieee_ets(struct hclge_dev *hdev,
struct ieee_ets *ets)
{
u32 i;
memset(ets, 0, sizeof(*ets));
ets->willing = 1;
ets->ets_cap = hdev->tc_max;
for (i = 0; i < HNAE3_MAX_TC; i++) {
ets->prio_tc[i] = hdev->tm_info.prio_tc[i];
ets->tc_tx_bw[i] = hdev->tm_info.pg_info[0].tc_dwrr[i];
if (hdev->tm_info.tc_info[i].tc_sch_mode ==
HCLGE_SCH_MODE_SP)
ets->tc_tsa[i] = IEEE_8021QAZ_TSA_STRICT;
else
ets->tc_tsa[i] = IEEE_8021QAZ_TSA_ETS;
}
}
/* IEEE std */
static int hclge_ieee_getets(struct hnae3_handle *h, struct ieee_ets *ets)
{
struct hclge_vport *vport = hclge_get_vport(h);
struct hclge_dev *hdev = vport->back;
hclge_tm_info_to_ieee_ets(hdev, ets);
return 0;
}
static int hclge_ets_validate(struct hclge_dev *hdev, struct ieee_ets *ets,
u8 *tc, bool *changed)
{
u32 total_ets_bw = 0;
u8 max_tc = 0;
u8 i;
for (i = 0; i < HNAE3_MAX_TC; i++) {
if (ets->prio_tc[i] >= hdev->tc_max ||
i >= hdev->tc_max)
return -EINVAL;
if (ets->prio_tc[i] != hdev->tm_info.prio_tc[i])
*changed = true;
if (ets->prio_tc[i] > max_tc)
max_tc = ets->prio_tc[i];
switch (ets->tc_tsa[i]) {
case IEEE_8021QAZ_TSA_STRICT:
if (hdev->tm_info.tc_info[i].tc_sch_mode !=
HCLGE_SCH_MODE_SP)
*changed = true;
break;
case IEEE_8021QAZ_TSA_ETS:
if (hdev->tm_info.tc_info[i].tc_sch_mode !=
HCLGE_SCH_MODE_DWRR)
*changed = true;
total_ets_bw += ets->tc_tx_bw[i];
break;
default:
return -EINVAL;
}
}
if (total_ets_bw != BW_PERCENT)
return -EINVAL;
*tc = max_tc + 1;
if (*tc != hdev->tm_info.num_tc)
*changed = true;
return 0;
}
static int hclge_map_update(struct hnae3_handle *h)
{
struct hclge_vport *vport = hclge_get_vport(h);
struct hclge_dev *hdev = vport->back;
int ret;
ret = hclge_tm_map_cfg(hdev);
if (ret)
return ret;
ret = hclge_tm_schd_mode_hw(hdev);
if (ret)
return ret;
ret = hclge_pause_setup_hw(hdev);
if (ret)
return ret;
ret = hclge_buffer_alloc(hdev);
if (ret)
return ret;
return hclge_rss_init_hw(hdev);
}
static int hclge_client_setup_tc(struct hclge_dev *hdev)
{
struct hclge_vport *vport = hdev->vport;
struct hnae3_client *client;
struct hnae3_handle *handle;
int ret;
u32 i;
for (i = 0; i < hdev->num_vmdq_vport + 1; i++) {
handle = &vport[i].nic;
client = handle->client;
if (!client || !client->ops || !client->ops->setup_tc)
continue;
ret = client->ops->setup_tc(handle, hdev->tm_info.num_tc);
if (ret)
return ret;
}
return 0;
}
static int hclge_ieee_setets(struct hnae3_handle *h, struct ieee_ets *ets)
{
struct hclge_vport *vport = hclge_get_vport(h);
struct hclge_dev *hdev = vport->back;
bool map_changed = false;
u8 num_tc = 0;
int ret;
if (!(hdev->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
hdev->flag & HCLGE_FLAG_MQPRIO_ENABLE)
return -EINVAL;
ret = hclge_ets_validate(hdev, ets, &num_tc, &map_changed);
if (ret)
return ret;
hclge_tm_schd_info_update(hdev, num_tc);
ret = hclge_ieee_ets_to_tm_info(hdev, ets);
if (ret)
return ret;
if (map_changed) {
ret = hclge_client_setup_tc(hdev);
if (ret)
return ret;
}
return hclge_tm_dwrr_cfg(hdev);
}
static int hclge_ieee_getpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
{
struct hclge_vport *vport = hclge_get_vport(h);
struct hclge_dev *hdev = vport->back;
u8 i, j, pfc_map, *prio_tc;
memset(pfc, 0, sizeof(*pfc));
pfc->pfc_cap = hdev->pfc_max;
prio_tc = hdev->tm_info.prio_tc;
pfc_map = hdev->tm_info.hw_pfc_map;
/* Pfc setting is based on TC */
for (i = 0; i < hdev->tm_info.num_tc; i++) {
for (j = 0; j < HNAE3_MAX_USER_PRIO; j++) {
if ((prio_tc[j] == i) && (pfc_map & BIT(i)))
pfc->pfc_en |= BIT(j);
}
}
return 0;
}
static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
{
struct hclge_vport *vport = hclge_get_vport(h);
struct hclge_dev *hdev = vport->back;
u8 i, j, pfc_map, *prio_tc;
if (!(hdev->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
hdev->flag & HCLGE_FLAG_MQPRIO_ENABLE)
return -EINVAL;
prio_tc = hdev->tm_info.prio_tc;
pfc_map = 0;
for (i = 0; i < hdev->tm_info.num_tc; i++) {
for (j = 0; j < HNAE3_MAX_USER_PRIO; j++) {
if ((prio_tc[j] == i) && (pfc->pfc_en & BIT(j))) {
pfc_map |= BIT(i);
break;
}
}
}
if (pfc_map == hdev->tm_info.hw_pfc_map)
return 0;
hdev->tm_info.hw_pfc_map = pfc_map;
return hclge_pause_setup_hw(hdev);
}
/* DCBX configuration */
static u8 hclge_getdcbx(struct hnae3_handle *h)
{
struct hclge_vport *vport = hclge_get_vport(h);
struct hclge_dev *hdev = vport->back;
if (hdev->flag & HCLGE_FLAG_MQPRIO_ENABLE)
return 0;
return hdev->dcbx_cap;
}
static u8 hclge_setdcbx(struct hnae3_handle *h, u8 mode)
{
struct hclge_vport *vport = hclge_get_vport(h);
struct hclge_dev *hdev = vport->back;
/* No support for LLD_MANAGED modes or CEE */
if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
(mode & DCB_CAP_DCBX_VER_CEE) ||
!(mode & DCB_CAP_DCBX_HOST))
return 1;
hdev->dcbx_cap = mode;
return 0;
}
/* Set up TC for hardware offloaded mqprio in channel mode */
static int hclge_setup_tc(struct hnae3_handle *h, u8 tc, u8 *prio_tc)
{
struct hclge_vport *vport = hclge_get_vport(h);
struct hclge_dev *hdev = vport->back;
int ret;
if (hdev->flag & HCLGE_FLAG_DCB_ENABLE)
return -EINVAL;
if (tc > hdev->tc_max) {
dev_err(&hdev->pdev->dev,
"setup tc failed, tc(%u) > tc_max(%u)\n",
tc, hdev->tc_max);
return -EINVAL;
}
hclge_tm_schd_info_update(hdev, tc);
ret = hclge_tm_prio_tc_info_update(hdev, prio_tc);
if (ret)
return ret;
ret = hclge_tm_init_hw(hdev);
if (ret)
return ret;
hdev->flag &= ~HCLGE_FLAG_DCB_ENABLE;
if (tc > 1)
hdev->flag |= HCLGE_FLAG_MQPRIO_ENABLE;
else
hdev->flag &= ~HCLGE_FLAG_MQPRIO_ENABLE;
return 0;
}
static const struct hnae3_dcb_ops hns3_dcb_ops = {
.ieee_getets = hclge_ieee_getets,
.ieee_setets = hclge_ieee_setets,
.ieee_getpfc = hclge_ieee_getpfc,
.ieee_setpfc = hclge_ieee_setpfc,
.getdcbx = hclge_getdcbx,
.setdcbx = hclge_setdcbx,
.map_update = hclge_map_update,
.setup_tc = hclge_setup_tc,
};
void hclge_dcb_ops_set(struct hclge_dev *hdev)
{
struct hclge_vport *vport = hdev->vport;
struct hnae3_knic_private_info *kinfo;
/* Hdev does not support DCB or vport is
* not a pf, then dcb_ops is not set.
*/
if (!hnae3_dev_dcb_supported(hdev) ||
vport->vport_id != 0)
return;
kinfo = &vport->nic.kinfo;
kinfo->dcb_ops = &hns3_dcb_ops;
hdev->dcbx_cap = DCB_CAP_DCBX_VER_IEEE | DCB_CAP_DCBX_HOST;
}
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