static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
{
struct bfin_mac_local *lp = netdev_priv(netdev);
if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
int timeout_cnt = MAX_TIMEOUT_CNT;
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
while ((!(bfin_read_EMAC_PTP_ISTAT() & TXTL)) && (--timeout_cnt))
udelay(1);
if (timeout_cnt == 0)
netdev_err(netdev, "timestamp the TX packet failed\n");
else {
struct skb_shared_hwtstamps shhwtstamps;
u64 ns;
u64 regval;
regval = bfin_read_EMAC_PTP_TXSNAPLO();
regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32;
memset(&shhwtstamps, 0, sizeof(shhwtstamps));
ns = timecounter_cyc2time(&lp->clock,
regval);
timecompare_update(&lp->compare, ns);
shhwtstamps.hwtstamp = ns_to_ktime(ns);
shhwtstamps.syststamp =
timecompare_transform(&lp->compare, ns);
skb_tstamp_tx(skb, &shhwtstamps);
bfin_dump_hwtamp("TX", &shhwtstamps.hwtstamp, &shhwtstamps.syststamp, &lp->compare);
}
}
}
static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
{
struct bfin_mac_local *lp = netdev_priv(netdev);
union skb_shared_tx *shtx = skb_tx(skb);
if (shtx->hardware) {
int timeout_cnt = MAX_TIMEOUT_CNT;
/* When doing time stamping, keep the connection to the socket
* a while longer
*/
shtx->in_progress = 1;
/*
* The timestamping is done at the EMAC module's MII/RMII interface
* when the module sees the Start of Frame of an event message packet. This
* interface is the closest possible place to the physical Ethernet transmission
* medium, providing the best timing accuracy.
*/
while ((!(bfin_read_EMAC_PTP_ISTAT() & TXTL)) && (--timeout_cnt))
udelay(1);
if (timeout_cnt == 0)
printk(KERN_ERR DRV_NAME
": fails to timestamp the TX packet\n");
else {
struct skb_shared_hwtstamps shhwtstamps;
u64 ns;
u64 regval;
regval = bfin_read_EMAC_PTP_TXSNAPLO();
regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32;
memset(&shhwtstamps, 0, sizeof(shhwtstamps));
ns = timecounter_cyc2time(&lp->clock,
regval);
timecompare_update(&lp->compare, ns);
shhwtstamps.hwtstamp = ns_to_ktime(ns);
shhwtstamps.syststamp =
timecompare_transform(&lp->compare, ns);
skb_tstamp_tx(skb, &shhwtstamps);
bfin_dump_hwtamp("TX", &shhwtstamps.hwtstamp, &shhwtstamps.syststamp, &lp->compare);
}
}
}
static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
{
struct bfin_mac_local *lp = netdev_priv(netdev);
if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
int timeout_cnt = MAX_TIMEOUT_CNT;
/* When doing time stamping, keep the connection to the socket
* a while longer
*/
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
/*
* The timestamping is done at the EMAC module's MII/RMII interface
* when the module sees the Start of Frame of an event message packet. This
* interface is the closest possible place to the physical Ethernet transmission
* medium, providing the best timing accuracy.
*/
while ((!(bfin_read_EMAC_PTP_ISTAT() & TXTL)) && (--timeout_cnt))
udelay(1);
if (timeout_cnt == 0)
netdev_err(netdev, "timestamp the TX packet failed\n");
else {
struct skb_shared_hwtstamps shhwtstamps;
u64 ns;
u64 regval;
regval = bfin_read_EMAC_PTP_TXSNAPLO();
regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32;
memset(&shhwtstamps, 0, sizeof(shhwtstamps));
ns = regval << lp->shift;
shhwtstamps.hwtstamp = ns_to_ktime(ns);
skb_tstamp_tx(skb, &shhwtstamps);
}
}
}
static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
struct ifreq *ifr, int cmd)
{
struct hwtstamp_config config;
struct bfin_mac_local *lp = netdev_priv(netdev);
u16 ptpctl;
u32 ptpfv1, ptpfv2, ptpfv3, ptpfoff;
if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
return -EFAULT;
pr_debug("%s config flag:0x%x, tx_type:0x%x, rx_filter:0x%x\n",
__func__, config.flags, config.tx_type, config.rx_filter);
if (config.flags)
return -EINVAL;
if ((config.tx_type != HWTSTAMP_TX_OFF) &&
(config.tx_type != HWTSTAMP_TX_ON))
return -ERANGE;
ptpctl = bfin_read_EMAC_PTP_CTL();
switch (config.rx_filter) {
case HWTSTAMP_FILTER_NONE:
ptpfv3 = 0xFFFFFFFF;
bfin_write_EMAC_PTP_FV3(ptpfv3);
break;
case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
ptpctl &= ~0x1F00;
bfin_write_EMAC_PTP_CTL(ptpctl);
ptpfoff = 0x4A24170C;
bfin_write_EMAC_PTP_FOFF(ptpfoff);
ptpfv1 = 0x11040800;
bfin_write_EMAC_PTP_FV1(ptpfv1);
ptpfv2 = 0x0140013F;
bfin_write_EMAC_PTP_FV2(ptpfv2);
ptpfv3 = 0xFFFFFFFC;
bfin_write_EMAC_PTP_FV3(ptpfv3);
config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
break;
case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
ptpctl &= ~0x1F00;
bfin_write_EMAC_PTP_CTL(ptpctl);
ptpfoff = 0x2A24170C;
bfin_write_EMAC_PTP_FOFF(ptpfoff);
ptpfv1 = 0x11040800;
bfin_write_EMAC_PTP_FV1(ptpfv1);
ptpfv2 = 0x0140013F;
bfin_write_EMAC_PTP_FV2(ptpfv2);
ptpfv3 = 0xFFFFFFF0;
bfin_write_EMAC_PTP_FV3(ptpfv3);
config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
break;
case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
ptpctl &= ~0x1100;
bfin_write_EMAC_PTP_CTL(ptpctl);
ptpfoff = 0x0E24170C;
bfin_write_EMAC_PTP_FOFF(ptpfoff);
ptpfv1 = 0x110488F7;
bfin_write_EMAC_PTP_FV1(ptpfv1);
ptpfv2 = 0x0140013F;
bfin_write_EMAC_PTP_FV2(ptpfv2);
ptpfv3 = 0xFFFFFFF0;
bfin_write_EMAC_PTP_FV3(ptpfv3);
config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
break;
default:
return -ERANGE;
}
if (config.tx_type == HWTSTAMP_TX_OFF &&
bfin_mac_hwtstamp_is_none(config.rx_filter)) {
ptpctl &= ~PTP_EN;
bfin_write_EMAC_PTP_CTL(ptpctl);
SSYNC();
} else {
ptpctl |= PTP_EN;
bfin_write_EMAC_PTP_CTL(ptpctl);
bfin_read_EMAC_PTP_RXSNAPLO();
bfin_read_EMAC_PTP_RXSNAPHI();
bfin_read_EMAC_PTP_TXSNAPLO();
bfin_read_EMAC_PTP_TXSNAPHI();
bfin_write_EMAC_PTP_TIMELO(0x00000000);
bfin_write_EMAC_PTP_TIMEHI(0xFF800000);
SSYNC();
lp->compare.last_update = 0;
timecounter_init(&lp->clock,
&lp->cycles,
ktime_to_ns(ktime_get_real()));
timecompare_update(&lp->compare, 0);
}
lp->stamp_cfg = config;
return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
-EFAULT : 0;
}
static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
struct ifreq *ifr, int cmd)
{
struct hwtstamp_config config;
struct bfin_mac_local *lp = netdev_priv(netdev);
u16 ptpctl;
u32 ptpfv1, ptpfv2, ptpfv3, ptpfoff;
if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
return -EFAULT;
pr_debug("%s config flag:0x%x, tx_type:0x%x, rx_filter:0x%x\n",
__func__, config.flags, config.tx_type, config.rx_filter);
/* reserved for future extensions */
if (config.flags)
return -EINVAL;
if ((config.tx_type != HWTSTAMP_TX_OFF) &&
(config.tx_type != HWTSTAMP_TX_ON))
return -ERANGE;
ptpctl = bfin_read_EMAC_PTP_CTL();
switch (config.rx_filter) {
case HWTSTAMP_FILTER_NONE:
/*
* Dont allow any timestamping
*/
ptpfv3 = 0xFFFFFFFF;
bfin_write_EMAC_PTP_FV3(ptpfv3);
break;
case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
/*
* Clear the five comparison mask bits (bits[12:8]) in EMAC_PTP_CTL)
* to enable all the field matches.
*/
ptpctl &= ~0x1F00;
bfin_write_EMAC_PTP_CTL(ptpctl);
/*
* Keep the default values of the EMAC_PTP_FOFF register.
*/
ptpfoff = 0x4A24170C;
bfin_write_EMAC_PTP_FOFF(ptpfoff);
/*
* Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
* registers.
*/
ptpfv1 = 0x11040800;
bfin_write_EMAC_PTP_FV1(ptpfv1);
ptpfv2 = 0x0140013F;
bfin_write_EMAC_PTP_FV2(ptpfv2);
/*
* The default value (0xFFFC) allows the timestamping of both
* received Sync messages and Delay_Req messages.
*/
ptpfv3 = 0xFFFFFFFC;
bfin_write_EMAC_PTP_FV3(ptpfv3);
config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
break;
case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
/* Clear all five comparison mask bits (bits[12:8]) in the
* EMAC_PTP_CTL register to enable all the field matches.
*/
ptpctl &= ~0x1F00;
bfin_write_EMAC_PTP_CTL(ptpctl);
/*
* Keep the default values of the EMAC_PTP_FOFF register, except set
* the PTPCOF field to 0x2A.
*/
ptpfoff = 0x2A24170C;
bfin_write_EMAC_PTP_FOFF(ptpfoff);
/*
* Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
* registers.
*/
ptpfv1 = 0x11040800;
bfin_write_EMAC_PTP_FV1(ptpfv1);
ptpfv2 = 0x0140013F;
bfin_write_EMAC_PTP_FV2(ptpfv2);
/*
* To allow the timestamping of Pdelay_Req and Pdelay_Resp, set
* the value to 0xFFF0.
*/
ptpfv3 = 0xFFFFFFF0;
bfin_write_EMAC_PTP_FV3(ptpfv3);
config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
break;
case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
/*
* Clear bits 8 and 12 of the EMAC_PTP_CTL register to enable only the
* EFTM and PTPCM field comparison.
*/
ptpctl &= ~0x1100;
bfin_write_EMAC_PTP_CTL(ptpctl);
/*
* Keep the default values of all the fields of the EMAC_PTP_FOFF
* register, except set the PTPCOF field to 0x0E.
*/
ptpfoff = 0x0E24170C;
bfin_write_EMAC_PTP_FOFF(ptpfoff);
/*
* Program bits [15:0] of the EMAC_PTP_FV1 register to 0x88F7, which
* corresponds to PTP messages on the MAC layer.
*/
ptpfv1 = 0x110488F7;
bfin_write_EMAC_PTP_FV1(ptpfv1);
ptpfv2 = 0x0140013F;
bfin_write_EMAC_PTP_FV2(ptpfv2);
/*
* To allow the timestamping of Pdelay_Req and Pdelay_Resp
* messages, set the value to 0xFFF0.
*/
ptpfv3 = 0xFFFFFFF0;
bfin_write_EMAC_PTP_FV3(ptpfv3);
config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
break;
default:
return -ERANGE;
}
if (config.tx_type == HWTSTAMP_TX_OFF &&
bfin_mac_hwtstamp_is_none(config.rx_filter)) {
ptpctl &= ~PTP_EN;
bfin_write_EMAC_PTP_CTL(ptpctl);
SSYNC();
} else {
ptpctl |= PTP_EN;
bfin_write_EMAC_PTP_CTL(ptpctl);
/*
* clear any existing timestamp
*/
bfin_read_EMAC_PTP_RXSNAPLO();
bfin_read_EMAC_PTP_RXSNAPHI();
bfin_read_EMAC_PTP_TXSNAPLO();
bfin_read_EMAC_PTP_TXSNAPHI();
/*
* Set registers so that rollover occurs soon to test this.
*/
bfin_write_EMAC_PTP_TIMELO(0x00000000);
bfin_write_EMAC_PTP_TIMEHI(0xFF800000);
SSYNC();
lp->compare.last_update = 0;
timecounter_init(&lp->clock,
&lp->cycles,
ktime_to_ns(ktime_get_real()));
timecompare_update(&lp->compare, 0);
}
lp->stamp_cfg = config;
return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
-EFAULT : 0;
}
