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net: hns3: add support for PTP 

Adds PTP support for HNS3 ethernet driver.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Huazhong Tan 2021-06-10 21:38:56 +08:00 committed by David S. Miller
parent 76cf404c40
commit 0bf5eb7885
11 changed files with 806 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/hisilicon/Kconfig
View File

@ -102,6 +102,7 @@ config HNS3_HCLGE
tristate "Hisilicon HNS3 HCLGE Acceleration Engine & Compatibility Layer Support"
default m
depends on PCI_MSI
imply PTP_1588_CLOCK
help
This selects the HNS3_HCLGE network acceleration engine & its hardware
compatibility layer. The engine would be used in Hisilicon hip08 family of

12
drivers/net/ethernet/hisilicon/hns3/hnae3.h
View File

@ -525,6 +525,12 @@ struct hnae3_ae_dev {
* Check if any cls flower rule exist
* dbg_read_cmd
* Execute debugfs read command.
* set_tx_hwts_info
* Save information for 1588 tx packet
* get_rx_hwts
* Get 1588 rx hwstamp
* get_ts_info
* Get phc info
*/
struct hnae3_ae_ops {
int (*init_ae_dev)(struct hnae3_ae_dev *ae_dev);
@ -710,6 +716,12 @@ struct hnae3_ae_ops {
struct ethtool_link_ksettings *cmd);
int (*set_phy_link_ksettings)(struct hnae3_handle *handle,
const struct ethtool_link_ksettings *cmd);
bool (*set_tx_hwts_info)(struct hnae3_handle *handle,
struct sk_buff *skb);
void (*get_rx_hwts)(struct hnae3_handle *handle, struct sk_buff *skb,
u32 nsec, u32 sec);
int (*get_ts_info)(struct hnae3_handle *handle,
struct ethtool_ts_info *info);
};
struct hnae3_dcb_ops {

27
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
View File

@ -1799,6 +1799,18 @@ static void hns3_tx_doorbell(struct hns3_enet_ring *ring, int num,
WRITE_ONCE(ring->last_to_use, ring->next_to_use);
}
static void hns3_tsyn(struct net_device *netdev, struct sk_buff *skb,
struct hns3_desc *desc)
{
struct hnae3_handle *h = hns3_get_handle(netdev);
if (!(h->ae_algo->ops->set_tx_hwts_info &&
h->ae_algo->ops->set_tx_hwts_info(h, skb)))
return;
desc->tx.bdtp_fe_sc_vld_ra_ri |= cpu_to_le16(BIT(HNS3_TXD_TSYN_B));
}
netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
{
struct hns3_nic_priv *priv = netdev_priv(netdev);
@ -1851,10 +1863,16 @@ netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
pre_ntu = ring->next_to_use ? (ring->next_to_use - 1) :
(ring->desc_num - 1);
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP))
hns3_tsyn(netdev, skb, &ring->desc[pre_ntu]);
ring->desc[pre_ntu].tx.bdtp_fe_sc_vld_ra_ri |=
cpu_to_le16(BIT(HNS3_TXD_FE_B));
trace_hns3_tx_desc(ring, pre_ntu);
skb_tx_timestamp(skb);
/* Complete translate all packets */
dev_queue = netdev_get_tx_queue(netdev, ring->queue_index);
doorbell = __netdev_tx_sent_queue(dev_queue, desc_cb->send_bytes,
@ -3585,6 +3603,15 @@ static int hns3_handle_bdinfo(struct hns3_enet_ring *ring, struct sk_buff *skb)
ol_info = le32_to_cpu(desc->rx.ol_info);
csum = le16_to_cpu(desc->csum);
if (unlikely(bd_base_info & BIT(HNS3_RXD_TS_VLD_B))) {
struct hnae3_handle *h = hns3_get_handle(netdev);
u32 nsec = le32_to_cpu(desc->ts_nsec);
u32 sec = le32_to_cpu(desc->ts_sec);
if (h->ae_algo->ops->get_rx_hwts)
h->ae_algo->ops->get_rx_hwts(h, skb, nsec, sec);
}
/* Based on hw strategy, the tag offloaded will be stored at
* ot_vlan_tag in two layer tag case, and stored at vlan_tag
* in one layer tag case.

9
drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
View File

@ -122,8 +122,9 @@ enum hns3_nic_state {
#define HNS3_RXD_LUM_B 9
#define HNS3_RXD_CRCP_B 10
#define HNS3_RXD_L3L4P_B 11
#define HNS3_RXD_TSIND_S 12
#define HNS3_RXD_TSIND_M (0x7 << HNS3_RXD_TSIND_S)
#define HNS3_RXD_TSIDX_S 12
#define HNS3_RXD_TSIDX_M (0x3 << HNS3_RXD_TSIDX_S)
#define HNS3_RXD_TS_VLD_B 14
#define HNS3_RXD_LKBK_B 15
#define HNS3_RXD_GRO_SIZE_S 16
#define HNS3_RXD_GRO_SIZE_M (0x3fff << HNS3_RXD_GRO_SIZE_S)
@ -240,6 +241,10 @@ struct __packed hns3_desc {
union {
__le64 addr;
__le16 csum;
struct {
__le32 ts_nsec;
__le32 ts_sec;
};
};
union {
struct {

12
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
View File

@ -1598,6 +1598,17 @@ static int hns3_set_priv_flags(struct net_device *netdev, u32 pflags)
ETHTOOL_COALESCE_TX_USECS_HIGH | \
ETHTOOL_COALESCE_MAX_FRAMES)
static int hns3_get_ts_info(struct net_device *netdev,
struct ethtool_ts_info *info)
{
struct hnae3_handle *handle = hns3_get_handle(netdev);
if (handle->ae_algo->ops->get_ts_info)
return handle->ae_algo->ops->get_ts_info(handle, info);
return ethtool_op_get_ts_info(netdev, info);
}
static const struct ethtool_ops hns3vf_ethtool_ops = {
.supported_coalesce_params = HNS3_ETHTOOL_COALESCE,
.get_drvinfo = hns3_get_drvinfo,
@ -1662,6 +1673,7 @@ static const struct ethtool_ops hns3_ethtool_ops = {
.get_module_eeprom = hns3_get_module_eeprom,
.get_priv_flags = hns3_get_priv_flags,
.set_priv_flags = hns3_set_priv_flags,
.get_ts_info = hns3_get_ts_info,
};
void hns3_ethtool_set_ops(struct net_device *netdev)

2
drivers/net/ethernet/hisilicon/hns3/hns3pf/Makefile
View File

@ -7,6 +7,6 @@ ccflags-y := -I $(srctree)/drivers/net/ethernet/hisilicon/hns3
ccflags-y += -I $(srctree)/$(src)
obj-$(CONFIG_HNS3_HCLGE) += hclge.o
hclge-objs = hclge_main.o hclge_cmd.o hclge_mdio.o hclge_tm.o hclge_mbx.o hclge_err.o hclge_debugfs.o
hclge-objs = hclge_main.o hclge_cmd.o hclge_mdio.o hclge_tm.o hclge_mbx.o hclge_err.o hclge_debugfs.o hclge_ptp.o
hclge-$(CONFIG_HNS3_DCB) += hclge_dcb.o

4
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
View File

@ -130,6 +130,10 @@ enum hclge_opcode_type {
HCLGE_OPC_COMMON_LOOPBACK = 0x0315,
HCLGE_OPC_CONFIG_FEC_MODE = 0x031A,
/* PTP commands */
HCLGE_OPC_PTP_INT_EN = 0x0501,
HCLGE_OPC_PTP_MODE_CFG = 0x0507,
/* PFC/Pause commands */
HCLGE_OPC_CFG_MAC_PAUSE_EN = 0x0701,
HCLGE_OPC_CFG_PFC_PAUSE_EN = 0x0702,

61
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
View File

@ -3346,6 +3346,12 @@ static u32 hclge_check_event_cause(struct hclge_dev *hdev, u32 *clearval)
hw_err_src_reg & HCLGE_RAS_REG_ERR_MASK)
return HCLGE_VECTOR0_EVENT_ERR;
/* check for vector0 ptp event source */
if (BIT(HCLGE_VECTOR0_REG_PTP_INT_B) & msix_src_reg) {
*clearval = msix_src_reg;
return HCLGE_VECTOR0_EVENT_PTP;
}
/* check for vector0 mailbox(=CMDQ RX) event source */
if (BIT(HCLGE_VECTOR0_RX_CMDQ_INT_B) & cmdq_src_reg) {
cmdq_src_reg &= ~BIT(HCLGE_VECTOR0_RX_CMDQ_INT_B);
@ -3365,6 +3371,7 @@ static void hclge_clear_event_cause(struct hclge_dev *hdev, u32 event_type,
u32 regclr)
{
switch (event_type) {
case HCLGE_VECTOR0_EVENT_PTP:
case HCLGE_VECTOR0_EVENT_RST:
hclge_write_dev(&hdev->hw, HCLGE_MISC_RESET_STS_REG, regclr);
break;
@ -3393,6 +3400,7 @@ static void hclge_enable_vector(struct hclge_misc_vector *vector, bool enable)
static irqreturn_t hclge_misc_irq_handle(int irq, void *data)
{
struct hclge_dev *hdev = data;
unsigned long flags;
u32 clearval = 0;
u32 event_cause;
@ -3407,6 +3415,11 @@ static irqreturn_t hclge_misc_irq_handle(int irq, void *data)
case HCLGE_VECTOR0_EVENT_RST:
hclge_reset_task_schedule(hdev);
break;
case HCLGE_VECTOR0_EVENT_PTP:
spin_lock_irqsave(&hdev->ptp->lock, flags);
hclge_ptp_clean_tx_hwts(hdev);
spin_unlock_irqrestore(&hdev->ptp->lock, flags);
break;
case HCLGE_VECTOR0_EVENT_MBX:
/* If we are here then,
* 1. Either we are not handling any mbx task and we are not
@ -3428,7 +3441,8 @@ static irqreturn_t hclge_misc_irq_handle(int irq, void *data)
hclge_clear_event_cause(hdev, event_cause, clearval);
/* Enable interrupt if it is not caused by reset event or error event */
if (event_cause == HCLGE_VECTOR0_EVENT_MBX ||
if (event_cause == HCLGE_VECTOR0_EVENT_PTP ||
event_cause == HCLGE_VECTOR0_EVENT_MBX ||
event_cause == HCLGE_VECTOR0_EVENT_OTHER)
hclge_enable_vector(&hdev->misc_vector, true);
@ -4375,6 +4389,27 @@ out:
hclge_task_schedule(hdev, delta);
}
static void hclge_ptp_service_task(struct hclge_dev *hdev)
{
unsigned long flags;
if (!test_bit(HCLGE_STATE_PTP_EN, &hdev->state) ||
!test_bit(HCLGE_STATE_PTP_TX_HANDLING, &hdev->state) ||
!time_is_before_jiffies(hdev->ptp->tx_start + HZ))
return;
/* to prevent concurrence with the irq handler */
spin_lock_irqsave(&hdev->ptp->lock, flags);
/* check HCLGE_STATE_PTP_TX_HANDLING here again, since the irq
* handler may handle it just before spin_lock_irqsave().
*/
if (test_bit(HCLGE_STATE_PTP_TX_HANDLING, &hdev->state))
hclge_ptp_clean_tx_hwts(hdev);
spin_unlock_irqrestore(&hdev->ptp->lock, flags);
}
static void hclge_service_task(struct work_struct *work)
{
struct hclge_dev *hdev =
@ -4382,6 +4417,7 @@ static void hclge_service_task(struct work_struct *work)
hclge_errhand_service_task(hdev);
hclge_reset_service_task(hdev);
hclge_ptp_service_task(hdev);
hclge_mailbox_service_task(hdev);
hclge_periodic_service_task(hdev);
@ -9413,8 +9449,15 @@ static int hclge_do_ioctl(struct hnae3_handle *handle, struct ifreq *ifr,
struct hclge_vport *vport = hclge_get_vport(handle);
struct hclge_dev *hdev = vport->back;
if (!hdev->hw.mac.phydev)
return hclge_mii_ioctl(hdev, ifr, cmd);
switch (cmd) {
case SIOCGHWTSTAMP:
return hclge_ptp_get_cfg(hdev, ifr);
case SIOCSHWTSTAMP:
return hclge_ptp_set_cfg(hdev, ifr);
default:
if (!hdev->hw.mac.phydev)
return hclge_mii_ioctl(hdev, ifr, cmd);
}
return phy_mii_ioctl(hdev->hw.mac.phydev, ifr, cmd);
}
@ -11530,6 +11573,10 @@ static int hclge_init_ae_dev(struct hnae3_ae_dev *ae_dev)
goto err_mdiobus_unreg;
}
ret = hclge_ptp_init(hdev);
if (ret)
goto err_mdiobus_unreg;
INIT_KFIFO(hdev->mac_tnl_log);
hclge_dcb_ops_set(hdev);
@ -11901,6 +11948,10 @@ static int hclge_reset_ae_dev(struct hnae3_ae_dev *ae_dev)
return ret;
}
ret = hclge_ptp_init(hdev);
if (ret)
return ret;
/* Log and clear the hw errors those already occurred */
if (hnae3_dev_ras_imp_supported(hdev))
hclge_handle_occurred_error(hdev);
@ -11954,6 +12005,7 @@ static void hclge_uninit_ae_dev(struct hnae3_ae_dev *ae_dev)
hclge_clear_vf_vlan(hdev);
hclge_misc_affinity_teardown(hdev);
hclge_state_uninit(hdev);
hclge_ptp_uninit(hdev);
hclge_uninit_rxd_adv_layout(hdev);
hclge_uninit_mac_table(hdev);
hclge_del_all_fd_entries(hdev);
@ -12850,6 +12902,9 @@ static const struct hnae3_ae_ops hclge_ops = {
.cls_flower_active = hclge_is_cls_flower_active,
.get_phy_link_ksettings = hclge_get_phy_link_ksettings,
.set_phy_link_ksettings = hclge_set_phy_link_ksettings,
.set_tx_hwts_info = hclge_ptp_set_tx_info,
.get_rx_hwts = hclge_ptp_get_rx_hwts,
.get_ts_info = hclge_ptp_get_ts_info,
};
static struct hnae3_ae_algo ae_algo = {

6
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
View File

@ -10,6 +10,7 @@
#include <linux/kfifo.h>
#include "hclge_cmd.h"
#include "hclge_ptp.h"
#include "hnae3.h"
#define HCLGE_MOD_VERSION "1.0"
@ -178,6 +179,7 @@ enum HLCGE_PORT_TYPE {
#define HCLGE_FUN_RST_ING_B 0
/* Vector0 register bits define */
#define HCLGE_VECTOR0_REG_PTP_INT_B 0
#define HCLGE_VECTOR0_GLOBALRESET_INT_B 5
#define HCLGE_VECTOR0_CORERESET_INT_B 6
#define HCLGE_VECTOR0_IMPRESET_INT_B 7
@ -230,6 +232,8 @@ enum HCLGE_DEV_STATE {
HCLGE_STATE_FD_TBL_CHANGED,
HCLGE_STATE_FD_CLEAR_ALL,
HCLGE_STATE_FD_USER_DEF_CHANGED,
HCLGE_STATE_PTP_EN,
HCLGE_STATE_PTP_TX_HANDLING,
HCLGE_STATE_MAX
};
@ -237,6 +241,7 @@ enum hclge_evt_cause {
HCLGE_VECTOR0_EVENT_RST,
HCLGE_VECTOR0_EVENT_MBX,
HCLGE_VECTOR0_EVENT_ERR,
HCLGE_VECTOR0_EVENT_PTP,
HCLGE_VECTOR0_EVENT_OTHER,
};
@ -935,6 +940,7 @@ struct hclge_dev {
/* affinity mask and notify for misc interrupt */
cpumask_t affinity_mask;
struct irq_affinity_notify affinity_notify;
struct hclge_ptp *ptp;
};
/* VPort level vlan tag configuration for TX direction */

544
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.c Normal file
View File

@ -0,0 +1,544 @@
// SPDX-License-Identifier: GPL-2.0+
// Copyright (c) 2021 Hisilicon Limited.
#include <linux/skbuff.h>
#include "hclge_main.h"
#include "hnae3.h"
static int hclge_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
{
struct hclge_dev *hdev = hclge_ptp_get_hdev(ptp);
u64 adj_val, adj_base, diff;
unsigned long flags;
bool is_neg = false;
u32 quo, numerator;
if (ppb < 0) {
ppb = -ppb;
is_neg = true;
}
adj_base = HCLGE_PTP_CYCLE_ADJ_BASE * HCLGE_PTP_CYCLE_ADJ_UNIT;
adj_val = adj_base * ppb;
diff = div_u64(adj_val, 1000000000ULL);
if (is_neg)
adj_val = adj_base - diff;
else
adj_val = adj_base + diff;
/* This clock cycle is defined by three part: quotient, numerator
* and denominator. For example, 2.5ns, the quotient is 2,
* denominator is fixed to HCLGE_PTP_CYCLE_ADJ_UNIT, and numerator
* is 0.5 * HCLGE_PTP_CYCLE_ADJ_UNIT.
*/
quo = div_u64_rem(adj_val, HCLGE_PTP_CYCLE_ADJ_UNIT, &numerator);
spin_lock_irqsave(&hdev->ptp->lock, flags);
writel(quo, hdev->ptp->io_base + HCLGE_PTP_CYCLE_QUO_REG);
writel(numerator, hdev->ptp->io_base + HCLGE_PTP_CYCLE_NUM_REG);
writel(HCLGE_PTP_CYCLE_ADJ_UNIT,
hdev->ptp->io_base + HCLGE_PTP_CYCLE_DEN_REG);
writel(HCLGE_PTP_CYCLE_ADJ_EN,
hdev->ptp->io_base + HCLGE_PTP_CYCLE_CFG_REG);
spin_unlock_irqrestore(&hdev->ptp->lock, flags);
return 0;
}
bool hclge_ptp_set_tx_info(struct hnae3_handle *handle, struct sk_buff *skb)
{
struct hclge_vport *vport = hclge_get_vport(handle);
struct hclge_dev *hdev = vport->back;
struct hclge_ptp *ptp = hdev->ptp;
if (!test_bit(HCLGE_PTP_FLAG_TX_EN, &ptp->flags) ||
test_and_set_bit(HCLGE_STATE_PTP_TX_HANDLING, &hdev->state)) {
ptp->tx_skipped++;
return false;
}
ptp->tx_start = jiffies;
ptp->tx_skb = skb_get(skb);
ptp->tx_cnt++;
return true;
}
void hclge_ptp_clean_tx_hwts(struct hclge_dev *hdev)
{
struct sk_buff *skb = hdev->ptp->tx_skb;
struct skb_shared_hwtstamps hwts;
u32 hi, lo;
u64 ns;
ns = readl(hdev->ptp->io_base + HCLGE_PTP_TX_TS_NSEC_REG) &
HCLGE_PTP_TX_TS_NSEC_MASK;
lo = readl(hdev->ptp->io_base + HCLGE_PTP_TX_TS_SEC_L_REG);
hi = readl(hdev->ptp->io_base + HCLGE_PTP_TX_TS_SEC_H_REG) &
HCLGE_PTP_TX_TS_SEC_H_MASK;
hdev->ptp->last_tx_seqid = readl(hdev->ptp->io_base +
HCLGE_PTP_TX_TS_SEQID_REG);
if (skb) {
hdev->ptp->tx_skb = NULL;
hdev->ptp->tx_cleaned++;
ns += (((u64)hi) << 32 | lo) * NSEC_PER_SEC;
hwts.hwtstamp = ns_to_ktime(ns);
skb_tstamp_tx(skb, &hwts);
dev_kfree_skb_any(skb);
}
clear_bit(HCLGE_STATE_PTP_TX_HANDLING, &hdev->state);
}
void hclge_ptp_get_rx_hwts(struct hnae3_handle *handle, struct sk_buff *skb,
u32 nsec, u32 sec)
{
struct hclge_vport *vport = hclge_get_vport(handle);
struct hclge_dev *hdev = vport->back;
unsigned long flags;
u64 ns = nsec;
u32 sec_h;
if (!test_bit(HCLGE_PTP_FLAG_RX_EN, &hdev->ptp->flags))
return;
/* Since the BD does not have enough space for the higher 16 bits of
* second, and this part will not change frequently, so read it
* from register.
*/
spin_lock_irqsave(&hdev->ptp->lock, flags);
sec_h = readl(hdev->ptp->io_base + HCLGE_PTP_CUR_TIME_SEC_H_REG);
spin_unlock_irqrestore(&hdev->ptp->lock, flags);
ns += (((u64)sec_h) << HCLGE_PTP_SEC_H_OFFSET | sec) * NSEC_PER_SEC;
skb_hwtstamps(skb)->hwtstamp = ns_to_ktime(ns);
hdev->ptp->last_rx = jiffies;
hdev->ptp->rx_cnt++;
}
static int hclge_ptp_gettimex(struct ptp_clock_info *ptp, struct timespec64 *ts,
struct ptp_system_timestamp *sts)
{
struct hclge_dev *hdev = hclge_ptp_get_hdev(ptp);
unsigned long flags;
u32 hi, lo;
u64 ns;
spin_lock_irqsave(&hdev->ptp->lock, flags);
ns = readl(hdev->ptp->io_base + HCLGE_PTP_CUR_TIME_NSEC_REG);
hi = readl(hdev->ptp->io_base + HCLGE_PTP_CUR_TIME_SEC_H_REG);
lo = readl(hdev->ptp->io_base + HCLGE_PTP_CUR_TIME_SEC_L_REG);
spin_unlock_irqrestore(&hdev->ptp->lock, flags);
ns += (((u64)hi) << HCLGE_PTP_SEC_H_OFFSET | lo) * NSEC_PER_SEC;
*ts = ns_to_timespec64(ns);
return 0;
}
static int hclge_ptp_settime(struct ptp_clock_info *ptp,
const struct timespec64 *ts)
{
struct hclge_dev *hdev = hclge_ptp_get_hdev(ptp);
unsigned long flags;
spin_lock_irqsave(&hdev->ptp->lock, flags);
writel(ts->tv_nsec, hdev->ptp->io_base + HCLGE_PTP_TIME_NSEC_REG);
writel(ts->tv_sec >> HCLGE_PTP_SEC_H_OFFSET,
hdev->ptp->io_base + HCLGE_PTP_TIME_SEC_H_REG);
writel(ts->tv_sec & HCLGE_PTP_SEC_L_MASK,
hdev->ptp->io_base + HCLGE_PTP_TIME_SEC_L_REG);
/* synchronize the time of phc */
writel(HCLGE_PTP_TIME_SYNC_EN,
hdev->ptp->io_base + HCLGE_PTP_TIME_SYNC_REG);
spin_unlock_irqrestore(&hdev->ptp->lock, flags);
return 0;
}
static int hclge_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
{
struct hclge_dev *hdev = hclge_ptp_get_hdev(ptp);
unsigned long flags;
bool is_neg = false;
u32 adj_val = 0;
if (delta < 0) {
adj_val |= HCLGE_PTP_TIME_NSEC_NEG;
delta = -delta;
is_neg = true;
}
if (delta > HCLGE_PTP_TIME_NSEC_MASK) {
struct timespec64 ts;
s64 ns;
hclge_ptp_gettimex(ptp, &ts, NULL);
ns = timespec64_to_ns(&ts);
ns = is_neg ? ns - delta : ns + delta;
ts = ns_to_timespec64(ns);
return hclge_ptp_settime(ptp, &ts);
}
adj_val |= delta & HCLGE_PTP_TIME_NSEC_MASK;
spin_lock_irqsave(&hdev->ptp->lock, flags);
writel(adj_val, hdev->ptp->io_base + HCLGE_PTP_TIME_NSEC_REG);
writel(HCLGE_PTP_TIME_ADJ_EN,
hdev->ptp->io_base + HCLGE_PTP_TIME_ADJ_REG);
spin_unlock_irqrestore(&hdev->ptp->lock, flags);
return 0;
}
int hclge_ptp_get_cfg(struct hclge_dev *hdev, struct ifreq *ifr)
{
if (!test_bit(HCLGE_STATE_PTP_EN, &hdev->state))
return -EOPNOTSUPP;
return copy_to_user(ifr->ifr_data, &hdev->ptp->ts_cfg,
sizeof(struct hwtstamp_config)) ? -EFAULT : 0;
}
static int hclge_ptp_int_en(struct hclge_dev *hdev, bool en)
{
struct hclge_ptp_int_cmd *req;
struct hclge_desc desc;
int ret;
req = (struct hclge_ptp_int_cmd *)desc.data;
hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_PTP_INT_EN, false);
req->int_en = en ? 1 : 0;
ret = hclge_cmd_send(&hdev->hw, &desc, 1);
if (ret)
dev_err(&hdev->pdev->dev,
"failed to %s ptp interrupt, ret = %d\n",
en ? "enable" : "disable", ret);
return ret;
}
int hclge_ptp_cfg_qry(struct hclge_dev *hdev, u32 *cfg)
{
struct hclge_ptp_cfg_cmd *req;
struct hclge_desc desc;
int ret;
req = (struct hclge_ptp_cfg_cmd *)desc.data;
hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_PTP_MODE_CFG, true);
ret = hclge_cmd_send(&hdev->hw, &desc, 1);
if (ret) {
dev_err(&hdev->pdev->dev,
"failed to query ptp config, ret = %d\n", ret);
return ret;
}
*cfg = le32_to_cpu(req->cfg);
return 0;
}
static int hclge_ptp_cfg(struct hclge_dev *hdev, u32 cfg)
{
struct hclge_ptp_cfg_cmd *req;
struct hclge_desc desc;
int ret;
req = (struct hclge_ptp_cfg_cmd *)desc.data;
hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_PTP_MODE_CFG, false);
req->cfg = cpu_to_le32(cfg);
ret = hclge_cmd_send(&hdev->hw, &desc, 1);
if (ret)
dev_err(&hdev->pdev->dev,
"failed to config ptp, ret = %d\n", ret);
return ret;
}
static int hclge_ptp_set_tx_mode(struct hwtstamp_config *cfg,
unsigned long *flags, u32 *ptp_cfg)
{
switch (cfg->tx_type) {
case HWTSTAMP_TX_OFF:
clear_bit(HCLGE_PTP_FLAG_TX_EN, flags);
break;
case HWTSTAMP_TX_ON:
set_bit(HCLGE_PTP_FLAG_TX_EN, flags);
*ptp_cfg |= HCLGE_PTP_TX_EN_B;
break;
default:
return -ERANGE;
}
return 0;
}
static int hclge_ptp_set_rx_mode(struct hwtstamp_config *cfg,
unsigned long *flags, u32 *ptp_cfg)
{
int rx_filter = cfg->rx_filter;
switch (cfg->rx_filter) {
case HWTSTAMP_FILTER_NONE:
clear_bit(HCLGE_PTP_FLAG_RX_EN, flags);
break;
case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
set_bit(HCLGE_PTP_FLAG_RX_EN, flags);
*ptp_cfg |= HCLGE_PTP_RX_EN_B;
*ptp_cfg |= HCLGE_PTP_UDP_FULL_TYPE << HCLGE_PTP_UDP_EN_SHIFT;
rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
break;
case HWTSTAMP_FILTER_PTP_V2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
case HWTSTAMP_FILTER_PTP_V2_SYNC:
case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
set_bit(HCLGE_PTP_FLAG_RX_EN, flags);
*ptp_cfg |= HCLGE_PTP_RX_EN_B;
*ptp_cfg |= HCLGE_PTP_UDP_FULL_TYPE << HCLGE_PTP_UDP_EN_SHIFT;
*ptp_cfg |= HCLGE_PTP_MSG1_V2_DEFAULT << HCLGE_PTP_MSG1_SHIFT;
*ptp_cfg |= HCLGE_PTP_MSG0_V2_EVENT << HCLGE_PTP_MSG0_SHIFT;
*ptp_cfg |= HCLGE_PTP_MSG_TYPE_V2 << HCLGE_PTP_MSG_TYPE_SHIFT;
rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
break;
case HWTSTAMP_FILTER_ALL:
default:
return -ERANGE;
}
cfg->rx_filter = rx_filter;
return 0;
}
static int hclge_ptp_set_ts_mode(struct hclge_dev *hdev,
struct hwtstamp_config *cfg)
{
unsigned long flags = hdev->ptp->flags;
u32 ptp_cfg = 0;
int ret;
if (test_bit(HCLGE_PTP_FLAG_EN, &hdev->ptp->flags))
ptp_cfg |= HCLGE_PTP_EN_B;
ret = hclge_ptp_set_tx_mode(cfg, &flags, &ptp_cfg);
if (ret)
return ret;
ret = hclge_ptp_set_rx_mode(cfg, &flags, &ptp_cfg);
if (ret)
return ret;
ret = hclge_ptp_cfg(hdev, ptp_cfg);
if (ret)
return ret;
hdev->ptp->flags = flags;
hdev->ptp->ptp_cfg = ptp_cfg;
return 0;
}
int hclge_ptp_set_cfg(struct hclge_dev *hdev, struct ifreq *ifr)
{
struct hwtstamp_config cfg;
int ret;
if (!test_bit(HCLGE_STATE_PTP_EN, &hdev->state)) {
dev_err(&hdev->pdev->dev, "phc is unsupported\n");
return -EOPNOTSUPP;
}
if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
return -EFAULT;
ret = hclge_ptp_set_ts_mode(hdev, &cfg);
if (ret)
return ret;
hdev->ptp->ts_cfg = cfg;
return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
}
int hclge_ptp_get_ts_info(struct hnae3_handle *handle,
struct ethtool_ts_info *info)
{
struct hclge_vport *vport = hclge_get_vport(handle);
struct hclge_dev *hdev = vport->back;
if (!test_bit(HCLGE_STATE_PTP_EN, &hdev->state)) {
dev_err(&hdev->pdev->dev, "phc is unsupported\n");
return -EOPNOTSUPP;
}
info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_RX_SOFTWARE |
SOF_TIMESTAMPING_SOFTWARE |
SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_RX_HARDWARE |
SOF_TIMESTAMPING_RAW_HARDWARE;
if (hdev->ptp->clock)
info->phc_index = ptp_clock_index(hdev->ptp->clock);
else
info->phc_index = -1;
info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
return 0;
}
static int hclge_ptp_create_clock(struct hclge_dev *hdev)
{
#define HCLGE_PTP_NAME_LEN 32
struct hclge_ptp *ptp;
ptp = devm_kzalloc(&hdev->pdev->dev, sizeof(*ptp), GFP_KERNEL);
if (!ptp)
return -ENOMEM;
ptp->hdev = hdev;
snprintf(ptp->info.name, HCLGE_PTP_NAME_LEN, "%s",
HCLGE_DRIVER_NAME);
ptp->info.owner = THIS_MODULE;
ptp->info.max_adj = HCLGE_PTP_CYCLE_ADJ_MAX;
ptp->info.n_ext_ts = 0;
ptp->info.pps = 0;
ptp->info.adjfreq = hclge_ptp_adjfreq;
ptp->info.adjtime = hclge_ptp_adjtime;
ptp->info.gettimex64 = hclge_ptp_gettimex;
ptp->info.settime64 = hclge_ptp_settime;
ptp->info.n_alarm = 0;
ptp->clock = ptp_clock_register(&ptp->info, &hdev->pdev->dev);
if (IS_ERR(ptp->clock)) {
dev_err(&hdev->pdev->dev,
"%d failed to register ptp clock, ret = %ld\n",
ptp->info.n_alarm, PTR_ERR(ptp->clock));
return -ENODEV;
} else if (!ptp->clock) {
dev_err(&hdev->pdev->dev, "failed to register ptp clock\n");
return -ENODEV;
}
spin_lock_init(&ptp->lock);
ptp->io_base = hdev->hw.io_base + HCLGE_PTP_REG_OFFSET;
ptp->ts_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
ptp->ts_cfg.tx_type = HWTSTAMP_TX_OFF;
hdev->ptp = ptp;
return 0;
}
static void hclge_ptp_destroy_clock(struct hclge_dev *hdev)
{
ptp_clock_unregister(hdev->ptp->clock);
hdev->ptp->clock = NULL;
devm_kfree(&hdev->pdev->dev, hdev->ptp);
hdev->ptp = NULL;
}
int hclge_ptp_init(struct hclge_dev *hdev)
{
struct hnae3_ae_dev *ae_dev = pci_get_drvdata(hdev->pdev);
struct timespec64 ts;
int ret;
if (!test_bit(HNAE3_DEV_SUPPORT_PTP_B, ae_dev->caps))
return 0;
if (!hdev->ptp) {
ret = hclge_ptp_create_clock(hdev);
if (ret)
return ret;
}
ret = hclge_ptp_int_en(hdev, true);
if (ret)
goto out;
set_bit(HCLGE_PTP_FLAG_EN, &hdev->ptp->flags);
ret = hclge_ptp_adjfreq(&hdev->ptp->info, 0);
if (ret) {
dev_err(&hdev->pdev->dev,
"failed to init freq, ret = %d\n", ret);
goto out;
}
ret = hclge_ptp_set_ts_mode(hdev, &hdev->ptp->ts_cfg);
if (ret) {
dev_err(&hdev->pdev->dev,
"failed to init ts mode, ret = %d\n", ret);
goto out;
}
ktime_get_real_ts64(&ts);
ret = hclge_ptp_settime(&hdev->ptp->info, &ts);
if (ret) {
dev_err(&hdev->pdev->dev,
"failed to init ts time, ret = %d\n", ret);
goto out;
}
set_bit(HCLGE_STATE_PTP_EN, &hdev->state);
dev_info(&hdev->pdev->dev, "phc initializes ok!\n");
return 0;
out:
hclge_ptp_destroy_clock(hdev);
return ret;
}
void hclge_ptp_uninit(struct hclge_dev *hdev)
{
struct hclge_ptp *ptp = hdev->ptp;
if (!ptp)
return;
hclge_ptp_int_en(hdev, false);
clear_bit(HCLGE_STATE_PTP_EN, &hdev->state);
clear_bit(HCLGE_PTP_FLAG_EN, &ptp->flags);
ptp->ts_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
ptp->ts_cfg.tx_type = HWTSTAMP_TX_OFF;
if (hclge_ptp_set_ts_mode(hdev, &ptp->ts_cfg))
dev_err(&hdev->pdev->dev, "failed to disable phc\n");
if (ptp->tx_skb) {
struct sk_buff *skb = ptp->tx_skb;
ptp->tx_skb = NULL;
dev_kfree_skb_any(skb);
}
hclge_ptp_destroy_clock(hdev);
}

134
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.h Normal file
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@ -0,0 +1,134 @@
/* SPDX-License-Identifier: GPL-2.0+ */
// Copyright (c) 2021 Hisilicon Limited.
#ifndef __HCLGE_PTP_H
#define __HCLGE_PTP_H
#include <linux/ptp_clock_kernel.h>
#include <linux/net_tstamp.h>
#include <linux/types.h>
#define HCLGE_PTP_REG_OFFSET 0x29000
#define HCLGE_PTP_TX_TS_SEQID_REG 0x0
#define HCLGE_PTP_TX_TS_NSEC_REG 0x4
#define HCLGE_PTP_TX_TS_NSEC_MASK GENMASK(29, 0)
#define HCLGE_PTP_TX_TS_SEC_L_REG 0x8
#define HCLGE_PTP_TX_TS_SEC_H_REG 0xC
#define HCLGE_PTP_TX_TS_SEC_H_MASK GENMASK(15, 0)
#define HCLGE_PTP_TX_TS_CNT_REG 0x30
#define HCLGE_PTP_TIME_SEC_H_REG 0x50
#define HCLGE_PTP_TIME_SEC_H_MASK GENMASK(15, 0)
#define HCLGE_PTP_TIME_SEC_L_REG 0x54
#define HCLGE_PTP_TIME_NSEC_REG 0x58
#define HCLGE_PTP_TIME_NSEC_MASK GENMASK(29, 0)
#define HCLGE_PTP_TIME_NSEC_NEG BIT(31)
#define HCLGE_PTP_TIME_SYNC_REG 0x5C
#define HCLGE_PTP_TIME_SYNC_EN BIT(0)
#define HCLGE_PTP_TIME_ADJ_REG 0x60
#define HCLGE_PTP_TIME_ADJ_EN BIT(0)
#define HCLGE_PTP_CYCLE_QUO_REG 0x64
#define HCLGE_PTP_CYCLE_DEN_REG 0x68
#define HCLGE_PTP_CYCLE_NUM_REG 0x6C
#define HCLGE_PTP_CYCLE_CFG_REG 0x70
#define HCLGE_PTP_CYCLE_ADJ_EN BIT(0)
#define HCLGE_PTP_CUR_TIME_SEC_H_REG 0x74
#define HCLGE_PTP_CUR_TIME_SEC_L_REG 0x78
#define HCLGE_PTP_CUR_TIME_NSEC_REG 0x7C
#define HCLGE_PTP_CYCLE_ADJ_BASE 2
#define HCLGE_PTP_CYCLE_ADJ_MAX 500000000
#define HCLGE_PTP_CYCLE_ADJ_UNIT 100000000
#define HCLGE_PTP_SEC_H_OFFSET 32u
#define HCLGE_PTP_SEC_L_MASK GENMASK(31, 0)
#define HCLGE_PTP_FLAG_EN BIT(0)
#define HCLGE_PTP_FLAG_TX_EN BIT(1)
#define HCLGE_PTP_FLAG_RX_EN BIT(2)
struct hclge_ptp {
struct hclge_dev *hdev;
struct ptp_clock *clock;
struct sk_buff *tx_skb;
unsigned long flags;
void __iomem *io_base;
struct ptp_clock_info info;
struct hwtstamp_config ts_cfg;
spinlock_t lock; /* protects ptp registers */
u32 ptp_cfg;
u32 last_tx_seqid;
unsigned long tx_start;
unsigned long tx_cnt;
unsigned long tx_skipped;
unsigned long tx_cleaned;
unsigned long last_rx;
unsigned long rx_cnt;
unsigned long tx_timeout;
};
struct hclge_ptp_int_cmd {
#define HCLGE_PTP_INT_EN_B BIT(0)
u8 int_en;
u8 rsvd[23];
};
enum hclge_ptp_udp_type {
HCLGE_PTP_UDP_NOT_TYPE,
HCLGE_PTP_UDP_P13F_TYPE,
HCLGE_PTP_UDP_P140_TYPE,
HCLGE_PTP_UDP_FULL_TYPE,
};
enum hclge_ptp_msg_type {
HCLGE_PTP_MSG_TYPE_V2_L2,
HCLGE_PTP_MSG_TYPE_V2,
HCLGE_PTP_MSG_TYPE_V2_EVENT,
};
enum hclge_ptp_msg0_type {
HCLGE_PTP_MSG0_V2_DELAY_REQ = 1,
HCLGE_PTP_MSG0_V2_PDELAY_REQ,
HCLGE_PTP_MSG0_V2_DELAY_RESP,
HCLGE_PTP_MSG0_V2_EVENT = 0xF,
};
#define HCLGE_PTP_MSG1_V2_DEFAULT 1
struct hclge_ptp_cfg_cmd {
#define HCLGE_PTP_EN_B BIT(0)
#define HCLGE_PTP_TX_EN_B BIT(1)
#define HCLGE_PTP_RX_EN_B BIT(2)
#define HCLGE_PTP_UDP_EN_SHIFT 3
#define HCLGE_PTP_UDP_EN_MASK GENMASK(4, 3)
#define HCLGE_PTP_MSG_TYPE_SHIFT 8
#define HCLGE_PTP_MSG_TYPE_MASK GENMASK(9, 8)
#define HCLGE_PTP_MSG1_SHIFT 16
#define HCLGE_PTP_MSG1_MASK GENMASK(19, 16)
#define HCLGE_PTP_MSG0_SHIFT 24
#define HCLGE_PTP_MSG0_MASK GENMASK(27, 24)
__le32 cfg;
u8 rsvd[20];
};
static inline struct hclge_dev *hclge_ptp_get_hdev(struct ptp_clock_info *info)
{
struct hclge_ptp *ptp = container_of(info, struct hclge_ptp, info);
return ptp->hdev;
}
bool hclge_ptp_set_tx_info(struct hnae3_handle *handle, struct sk_buff *skb);
void hclge_ptp_clean_tx_hwts(struct hclge_dev *dev);
void hclge_ptp_get_rx_hwts(struct hnae3_handle *handle, struct sk_buff *skb,
u32 nsec, u32 sec);
int hclge_ptp_get_cfg(struct hclge_dev *hdev, struct ifreq *ifr);
int hclge_ptp_set_cfg(struct hclge_dev *hdev, struct ifreq *ifr);
int hclge_ptp_init(struct hclge_dev *hdev);
void hclge_ptp_uninit(struct hclge_dev *hdev);
int hclge_ptp_get_ts_info(struct hnae3_handle *handle,
struct ethtool_ts_info *info);
int hclge_ptp_cfg_qry(struct hclge_dev *hdev, u32 *cfg);
#endif