diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | 10 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/hwif.h | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c | 39 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c | 40 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h | 1 |
7 files changed, 99 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c index 60566598d644..ec140fc4a0f5 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c @@ -296,6 +296,13 @@ static int intel_crosststamp(ktime_t *device, intel_priv = priv->plat->bsp_priv; + /* Both internal crosstimestamping and external triggered event + * timestamping cannot be run concurrently. + */ + if (priv->plat->ext_snapshot_en) + return -EBUSY; + + mutex_lock(&priv->aux_ts_lock); /* Enable Internal snapshot trigger */ acr_value = readl(ptpaddr + PTP_ACR); acr_value &= ~PTP_ACR_MASK; @@ -321,6 +328,8 @@ static int intel_crosststamp(ktime_t *device, acr_value = readl(ptpaddr + PTP_ACR); acr_value |= PTP_ACR_ATSFC; writel(acr_value, ptpaddr + PTP_ACR); + /* Release the mutex */ + mutex_unlock(&priv->aux_ts_lock); /* Trigger Internal snapshot signal * Create a rising edge by just toggle the GPO1 to low @@ -520,6 +529,7 @@ static int intel_mgbe_common_data(struct pci_dev *pdev, plat->mdio_bus_data->phy_mask |= 1 << INTEL_MGBE_XPCS_ADDR; plat->int_snapshot_num = AUX_SNAPSHOT1; + plat->ext_snapshot_num = AUX_SNAPSHOT0; plat->has_crossts = true; plat->crosststamp = intel_crosststamp; diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h index 2b5022ef1e52..2cc91759b91f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/hwif.h +++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h @@ -504,6 +504,8 @@ struct stmmac_ops { #define stmmac_fpe_irq_status(__priv, __args...) \ stmmac_do_callback(__priv, mac, fpe_irq_status, __args) +struct stmmac_priv; + /* PTP and HW Timer helpers */ struct stmmac_hwtimestamp { void (*config_hw_tstamping) (void __iomem *ioaddr, u32 data); @@ -515,6 +517,7 @@ struct stmmac_hwtimestamp { int add_sub, int gmac4); void (*get_systime) (void __iomem *ioaddr, u64 *systime); void (*get_ptptime)(void __iomem *ioaddr, u64 *ptp_time); + void (*timestamp_interrupt)(struct stmmac_priv *priv); }; #define stmmac_config_hw_tstamping(__priv, __args...) \ @@ -531,6 +534,8 @@ struct stmmac_hwtimestamp { stmmac_do_void_callback(__priv, ptp, get_systime, __args) #define stmmac_get_ptptime(__priv, __args...) \ stmmac_do_void_callback(__priv, ptp, get_ptptime, __args) +#define stmmac_timestamp_interrupt(__priv, __args...) \ + stmmac_do_void_callback(__priv, ptp, timestamp_interrupt, __args) /* Helpers to manage the descriptors for chain and ring modes */ struct stmmac_mode_ops { diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index b8a42260066d..b6cd43eda7ac 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -250,6 +250,9 @@ struct stmmac_priv { int use_riwt; int irq_wake; spinlock_t ptp_lock; + /* Protects auxiliary snapshot registers from concurrent access. */ + struct mutex aux_ts_lock; + void __iomem *mmcaddr; void __iomem *ptpaddr; unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c index 113c51bcc0b5..074e2cdfb0fa 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c @@ -12,8 +12,11 @@ #include <linux/io.h> #include <linux/iopoll.h> #include <linux/delay.h> +#include <linux/ptp_clock_kernel.h> #include "common.h" #include "stmmac_ptp.h" +#include "dwmac4.h" +#include "stmmac.h" static void config_hw_tstamping(void __iomem *ioaddr, u32 data) { @@ -163,6 +166,41 @@ static void get_ptptime(void __iomem *ptpaddr, u64 *ptp_time) *ptp_time = ns; } +static void timestamp_interrupt(struct stmmac_priv *priv) +{ + u32 num_snapshot, ts_status, tsync_int; + struct ptp_clock_event event; + unsigned long flags; + u64 ptp_time; + int i; + + tsync_int = readl(priv->ioaddr + GMAC_INT_STATUS) & GMAC_INT_TSIE; + + if (!tsync_int) + return; + + /* Read timestamp status to clear interrupt from either external + * timestamp or start/end of PPS. + */ + ts_status = readl(priv->ioaddr + GMAC_TIMESTAMP_STATUS); + + if (!priv->plat->ext_snapshot_en) + return; + + num_snapshot = (ts_status & GMAC_TIMESTAMP_ATSNS_MASK) >> + GMAC_TIMESTAMP_ATSNS_SHIFT; + + for (i = 0; i < num_snapshot; i++) { + spin_lock_irqsave(&priv->ptp_lock, flags); + get_ptptime(priv->ptpaddr, &ptp_time); + spin_unlock_irqrestore(&priv->ptp_lock, flags); + event.type = PTP_CLOCK_EXTTS; + event.index = 0; + event.timestamp = ptp_time; + ptp_clock_event(priv->ptp_clock, &event); + } +} + const struct stmmac_hwtimestamp stmmac_ptp = { .config_hw_tstamping = config_hw_tstamping, .init_systime = init_systime, @@ -171,4 +209,5 @@ const struct stmmac_hwtimestamp stmmac_ptp = { .adjust_systime = adjust_systime, .get_systime = get_systime, .get_ptptime = get_ptptime, + .timestamp_interrupt = timestamp_interrupt, }; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index e3e22200a4fd..3a5ca5833ce1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -5687,6 +5687,8 @@ static void stmmac_common_interrupt(struct stmmac_priv *priv) else netif_carrier_off(priv->dev); } + + stmmac_timestamp_interrupt(priv, priv); } } diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c index b164ae22e35f..4e86cdf2bc9f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c @@ -135,7 +135,10 @@ static int stmmac_enable(struct ptp_clock_info *ptp, { struct stmmac_priv *priv = container_of(ptp, struct stmmac_priv, ptp_clock_ops); + void __iomem *ptpaddr = priv->ptpaddr; + void __iomem *ioaddr = priv->hw->pcsr; struct stmmac_pps_cfg *cfg; + u32 intr_value, acr_value; int ret = -EOPNOTSUPP; unsigned long flags; @@ -159,6 +162,37 @@ static int stmmac_enable(struct ptp_clock_info *ptp, priv->systime_flags); spin_unlock_irqrestore(&priv->ptp_lock, flags); break; + case PTP_CLK_REQ_EXTTS: + priv->plat->ext_snapshot_en = on; + mutex_lock(&priv->aux_ts_lock); + acr_value = readl(ptpaddr + PTP_ACR); + acr_value &= ~PTP_ACR_MASK; + if (on) { + /* Enable External snapshot trigger */ + acr_value |= priv->plat->ext_snapshot_num; + acr_value |= PTP_ACR_ATSFC; + netdev_dbg(priv->dev, "Auxiliary Snapshot %d enabled.\n", + priv->plat->ext_snapshot_num >> + PTP_ACR_ATSEN_SHIFT); + /* Enable Timestamp Interrupt */ + intr_value = readl(ioaddr + GMAC_INT_EN); + intr_value |= GMAC_INT_TSIE; + writel(intr_value, ioaddr + GMAC_INT_EN); + + } else { + netdev_dbg(priv->dev, "Auxiliary Snapshot %d disabled.\n", + priv->plat->ext_snapshot_num >> + PTP_ACR_ATSEN_SHIFT); + /* Disable Timestamp Interrupt */ + intr_value = readl(ioaddr + GMAC_INT_EN); + intr_value &= ~GMAC_INT_TSIE; + writel(intr_value, ioaddr + GMAC_INT_EN); + } + writel(acr_value, ptpaddr + PTP_ACR); + mutex_unlock(&priv->aux_ts_lock); + ret = 0; + break; + default: break; } @@ -202,7 +236,7 @@ static struct ptp_clock_info stmmac_ptp_clock_ops = { .name = "stmmac ptp", .max_adj = 62500000, .n_alarm = 0, - .n_ext_ts = 0, + .n_ext_ts = 0, /* will be overwritten in stmmac_ptp_register */ .n_per_out = 0, /* will be overwritten in stmmac_ptp_register */ .n_pins = 0, .pps = 0, @@ -237,8 +271,10 @@ void stmmac_ptp_register(struct stmmac_priv *priv) stmmac_ptp_clock_ops.max_adj = priv->plat->ptp_max_adj; stmmac_ptp_clock_ops.n_per_out = priv->dma_cap.pps_out_num; + stmmac_ptp_clock_ops.n_ext_ts = priv->dma_cap.aux_snapshot_n; spin_lock_init(&priv->ptp_lock); + mutex_init(&priv->aux_ts_lock); priv->ptp_clock_ops = stmmac_ptp_clock_ops; priv->ptp_clock = ptp_clock_register(&priv->ptp_clock_ops, @@ -264,4 +300,6 @@ void stmmac_ptp_unregister(struct stmmac_priv *priv) pr_debug("Removed PTP HW clock successfully on %s\n", priv->dev->name); } + + mutex_destroy(&priv->aux_ts_lock); } diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h index f88727ce4d30..53172a439810 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.h @@ -73,6 +73,7 @@ #define PTP_ACR_ATSEN1 BIT(5) /* Auxiliary Snapshot 1 Enable */ #define PTP_ACR_ATSEN2 BIT(6) /* Auxiliary Snapshot 2 Enable */ #define PTP_ACR_ATSEN3 BIT(7) /* Auxiliary Snapshot 3 Enable */ +#define PTP_ACR_ATSEN_SHIFT 5 /* Auxiliary Snapshot shift */ #define PTP_ACR_MASK GENMASK(7, 4) /* Aux Snapshot Mask */ #define PMC_ART_VALUE0 0x01 /* PMC_ART[15:0] timer value */ #define PMC_ART_VALUE1 0x02 /* PMC_ART[31:16] timer value */ |