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path: root/drivers/net/ethernet/adi/bfin_mac.c
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Diffstat (limited to 'drivers/net/ethernet/adi/bfin_mac.c')
-rw-r--r--drivers/net/ethernet/adi/bfin_mac.c326
1 files changed, 229 insertions, 97 deletions
diff --git a/drivers/net/ethernet/adi/bfin_mac.c b/drivers/net/ethernet/adi/bfin_mac.c
index f816426e108..7ae74d450e8 100644
--- a/drivers/net/ethernet/adi/bfin_mac.c
+++ b/drivers/net/ethernet/adi/bfin_mac.c
@@ -188,10 +188,9 @@ static int desc_list_init(struct net_device *dev)
/* allocate a new skb for next time receive */
new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN);
- if (!new_skb) {
- pr_notice("init: low on mem - packet dropped\n");
+ if (!new_skb)
goto init_error;
- }
+
skb_reserve(new_skb, NET_IP_ALIGN);
/* Invidate the data cache of skb->data range when it is write back
* cache. It will prevent overwritting the new data from DMA
@@ -308,11 +307,6 @@ static int bfin_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
return bfin_mdio_poll();
}
-static int bfin_mdiobus_reset(struct mii_bus *bus)
-{
- return 0;
-}
-
static void bfin_mac_adjust_link(struct net_device *dev)
{
struct bfin_mac_local *lp = netdev_priv(dev);
@@ -425,8 +419,8 @@ static int mii_probe(struct net_device *dev, int phy_mode)
return -EINVAL;
}
- phydev = phy_connect(dev, dev_name(&phydev->dev), &bfin_mac_adjust_link,
- 0, phy_mode);
+ phydev = phy_connect(dev, dev_name(&phydev->dev),
+ &bfin_mac_adjust_link, phy_mode);
if (IS_ERR(phydev)) {
netdev_err(dev, "could not attach PHY\n");
@@ -498,10 +492,10 @@ bfin_mac_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
static void bfin_mac_ethtool_getdrvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
- strcpy(info->driver, KBUILD_MODNAME);
- strcpy(info->version, DRV_VERSION);
- strcpy(info->fw_version, "N/A");
- strcpy(info->bus_info, dev_name(&dev->dev));
+ strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
+ strlcpy(info->version, DRV_VERSION, sizeof(info->version));
+ strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
+ strlcpy(info->bus_info, dev_name(&dev->dev), sizeof(info->bus_info));
}
static void bfin_mac_ethtool_getwol(struct net_device *dev,
@@ -531,7 +525,7 @@ static int bfin_mac_ethtool_setwol(struct net_device *dev,
if (lp->wol && !lp->irq_wake_requested) {
/* register wake irq handler */
rc = request_irq(IRQ_MAC_WAKEDET, bfin_mac_wake_interrupt,
- IRQF_DISABLED, "EMAC_WAKE", dev);
+ 0, "EMAC_WAKE", dev);
if (rc)
return rc;
lp->irq_wake_requested = true;
@@ -548,14 +542,17 @@ static int bfin_mac_ethtool_setwol(struct net_device *dev,
return 0;
}
+#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
static int bfin_mac_ethtool_get_ts_info(struct net_device *dev,
struct ethtool_ts_info *info)
{
+ struct bfin_mac_local *lp = netdev_priv(dev);
+
info->so_timestamping =
SOF_TIMESTAMPING_TX_HARDWARE |
SOF_TIMESTAMPING_RX_HARDWARE |
- SOF_TIMESTAMPING_SYS_HARDWARE;
- info->phc_index = -1;
+ SOF_TIMESTAMPING_RAW_HARDWARE;
+ info->phc_index = lp->phc_index;
info->tx_types =
(1 << HWTSTAMP_TX_OFF) |
(1 << HWTSTAMP_TX_ON);
@@ -566,6 +563,7 @@ static int bfin_mac_ethtool_get_ts_info(struct net_device *dev,
(1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT);
return 0;
}
+#endif
static const struct ethtool_ops bfin_mac_ethtool_ops = {
.get_settings = bfin_mac_ethtool_getsettings,
@@ -574,7 +572,9 @@ static const struct ethtool_ops bfin_mac_ethtool_ops = {
.get_drvinfo = bfin_mac_ethtool_getdrvinfo,
.get_wol = bfin_mac_ethtool_getwol,
.set_wol = bfin_mac_ethtool_setwol,
+#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
.get_ts_info = bfin_mac_ethtool_get_ts_info,
+#endif
};
/**************************************************************************/
@@ -641,7 +641,6 @@ static int bfin_mac_set_mac_address(struct net_device *dev, void *p)
if (netif_running(dev))
return -EBUSY;
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
- dev->addr_assign_type &= ~NET_ADDR_RANDOM;
setup_mac_addr(dev->dev_addr);
return 0;
}
@@ -649,8 +648,22 @@ static int bfin_mac_set_mac_address(struct net_device *dev, void *p)
#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
#define bfin_mac_hwtstamp_is_none(cfg) ((cfg) == HWTSTAMP_FILTER_NONE)
-static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
- struct ifreq *ifr, int cmd)
+static u32 bfin_select_phc_clock(u32 input_clk, unsigned int *shift_result)
+{
+ u32 ipn = 1000000000UL / input_clk;
+ u32 ppn = 1;
+ unsigned int shift = 0;
+
+ while (ppn <= ipn) {
+ ppn <<= 1;
+ shift++;
+ }
+ *shift_result = shift;
+ return 1000000000UL / ppn;
+}
+
+static int bfin_mac_hwtstamp_set(struct net_device *netdev,
+ struct ifreq *ifr)
{
struct hwtstamp_config config;
struct bfin_mac_local *lp = netdev_priv(netdev);
@@ -798,19 +811,7 @@ static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
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;
@@ -818,13 +819,14 @@ static int bfin_mac_hwtstamp_ioctl(struct net_device *netdev,
-EFAULT : 0;
}
-static void bfin_dump_hwtamp(char *s, ktime_t *hw, ktime_t *ts, struct timecompare *cmp)
+static int bfin_mac_hwtstamp_get(struct net_device *netdev,
+ struct ifreq *ifr)
{
- ktime_t sys = ktime_get_real();
+ struct bfin_mac_local *lp = netdev_priv(netdev);
- pr_debug("%s %s hardware:%d,%d transform system:%d,%d system:%d,%d, cmp:%lld, %lld\n",
- __func__, s, hw->tv.sec, hw->tv.nsec, ts->tv.sec, ts->tv.nsec, sys.tv.sec,
- sys.tv.nsec, cmp->offset, cmp->skew);
+ return copy_to_user(ifr->ifr_data, &lp->stamp_cfg,
+ sizeof(lp->stamp_cfg)) ?
+ -EFAULT : 0;
}
static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
@@ -857,15 +859,9 @@ static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
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);
+ ns = regval << lp->shift;
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);
}
}
}
@@ -888,63 +884,196 @@ static void bfin_rx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
regval = bfin_read_EMAC_PTP_RXSNAPLO();
regval |= (u64)bfin_read_EMAC_PTP_RXSNAPHI() << 32;
- ns = timecounter_cyc2time(&lp->clock, regval);
- timecompare_update(&lp->compare, ns);
+ ns = regval << lp->shift;
memset(shhwtstamps, 0, sizeof(*shhwtstamps));
shhwtstamps->hwtstamp = ns_to_ktime(ns);
- shhwtstamps->syststamp = timecompare_transform(&lp->compare, ns);
+}
- bfin_dump_hwtamp("RX", &shhwtstamps->hwtstamp, &shhwtstamps->syststamp, &lp->compare);
+static void bfin_mac_hwtstamp_init(struct net_device *netdev)
+{
+ struct bfin_mac_local *lp = netdev_priv(netdev);
+ u64 addend, ppb;
+ u32 input_clk, phc_clk;
+
+ /* Initialize hardware timer */
+ input_clk = get_sclk();
+ phc_clk = bfin_select_phc_clock(input_clk, &lp->shift);
+ addend = phc_clk * (1ULL << 32);
+ do_div(addend, input_clk);
+ bfin_write_EMAC_PTP_ADDEND((u32)addend);
+
+ lp->addend = addend;
+ ppb = 1000000000ULL * input_clk;
+ do_div(ppb, phc_clk);
+ lp->max_ppb = ppb - 1000000000ULL - 1ULL;
+
+ /* Initialize hwstamp config */
+ lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
+ lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF;
}
-/*
- * bfin_read_clock - read raw cycle counter (to be used by time counter)
- */
-static cycle_t bfin_read_clock(const struct cyclecounter *tc)
+static u64 bfin_ptp_time_read(struct bfin_mac_local *lp)
{
- u64 stamp;
+ u64 ns;
+ u32 lo, hi;
- stamp = bfin_read_EMAC_PTP_TIMELO();
- stamp |= (u64)bfin_read_EMAC_PTP_TIMEHI() << 32ULL;
+ lo = bfin_read_EMAC_PTP_TIMELO();
+ hi = bfin_read_EMAC_PTP_TIMEHI();
- return stamp;
+ ns = ((u64) hi) << 32;
+ ns |= lo;
+ ns <<= lp->shift;
+
+ return ns;
}
-#define PTP_CLK 25000000
+static void bfin_ptp_time_write(struct bfin_mac_local *lp, u64 ns)
+{
+ u32 hi, lo;
-static void bfin_mac_hwtstamp_init(struct net_device *netdev)
+ ns >>= lp->shift;
+ hi = ns >> 32;
+ lo = ns & 0xffffffff;
+
+ bfin_write_EMAC_PTP_TIMELO(lo);
+ bfin_write_EMAC_PTP_TIMEHI(hi);
+}
+
+/* PTP Hardware Clock operations */
+
+static int bfin_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
+{
+ u64 adj;
+ u32 diff, addend;
+ int neg_adj = 0;
+ struct bfin_mac_local *lp =
+ container_of(ptp, struct bfin_mac_local, caps);
+
+ if (ppb < 0) {
+ neg_adj = 1;
+ ppb = -ppb;
+ }
+ addend = lp->addend;
+ adj = addend;
+ adj *= ppb;
+ diff = div_u64(adj, 1000000000ULL);
+
+ addend = neg_adj ? addend - diff : addend + diff;
+
+ bfin_write_EMAC_PTP_ADDEND(addend);
+
+ return 0;
+}
+
+static int bfin_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
+{
+ s64 now;
+ unsigned long flags;
+ struct bfin_mac_local *lp =
+ container_of(ptp, struct bfin_mac_local, caps);
+
+ spin_lock_irqsave(&lp->phc_lock, flags);
+
+ now = bfin_ptp_time_read(lp);
+ now += delta;
+ bfin_ptp_time_write(lp, now);
+
+ spin_unlock_irqrestore(&lp->phc_lock, flags);
+
+ return 0;
+}
+
+static int bfin_ptp_gettime(struct ptp_clock_info *ptp, struct timespec *ts)
+{
+ u64 ns;
+ u32 remainder;
+ unsigned long flags;
+ struct bfin_mac_local *lp =
+ container_of(ptp, struct bfin_mac_local, caps);
+
+ spin_lock_irqsave(&lp->phc_lock, flags);
+
+ ns = bfin_ptp_time_read(lp);
+
+ spin_unlock_irqrestore(&lp->phc_lock, flags);
+
+ ts->tv_sec = div_u64_rem(ns, 1000000000, &remainder);
+ ts->tv_nsec = remainder;
+ return 0;
+}
+
+static int bfin_ptp_settime(struct ptp_clock_info *ptp,
+ const struct timespec *ts)
+{
+ u64 ns;
+ unsigned long flags;
+ struct bfin_mac_local *lp =
+ container_of(ptp, struct bfin_mac_local, caps);
+
+ ns = ts->tv_sec * 1000000000ULL;
+ ns += ts->tv_nsec;
+
+ spin_lock_irqsave(&lp->phc_lock, flags);
+
+ bfin_ptp_time_write(lp, ns);
+
+ spin_unlock_irqrestore(&lp->phc_lock, flags);
+
+ return 0;
+}
+
+static int bfin_ptp_enable(struct ptp_clock_info *ptp,
+ struct ptp_clock_request *rq, int on)
+{
+ return -EOPNOTSUPP;
+}
+
+static struct ptp_clock_info bfin_ptp_caps = {
+ .owner = THIS_MODULE,
+ .name = "BF518 clock",
+ .max_adj = 0,
+ .n_alarm = 0,
+ .n_ext_ts = 0,
+ .n_per_out = 0,
+ .n_pins = 0,
+ .pps = 0,
+ .adjfreq = bfin_ptp_adjfreq,
+ .adjtime = bfin_ptp_adjtime,
+ .gettime = bfin_ptp_gettime,
+ .settime = bfin_ptp_settime,
+ .enable = bfin_ptp_enable,
+};
+
+static int bfin_phc_init(struct net_device *netdev, struct device *dev)
{
struct bfin_mac_local *lp = netdev_priv(netdev);
- u64 append;
- /* Initialize hardware timer */
- append = PTP_CLK * (1ULL << 32);
- do_div(append, get_sclk());
- bfin_write_EMAC_PTP_ADDEND((u32)append);
-
- memset(&lp->cycles, 0, sizeof(lp->cycles));
- lp->cycles.read = bfin_read_clock;
- lp->cycles.mask = CLOCKSOURCE_MASK(64);
- lp->cycles.mult = 1000000000 / PTP_CLK;
- lp->cycles.shift = 0;
-
- /* Synchronize our NIC clock against system wall clock */
- memset(&lp->compare, 0, sizeof(lp->compare));
- lp->compare.source = &lp->clock;
- lp->compare.target = ktime_get_real;
- lp->compare.num_samples = 10;
+ lp->caps = bfin_ptp_caps;
+ lp->caps.max_adj = lp->max_ppb;
+ lp->clock = ptp_clock_register(&lp->caps, dev);
+ if (IS_ERR(lp->clock))
+ return PTR_ERR(lp->clock);
- /* Initialize hwstamp config */
- lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
- lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF;
+ lp->phc_index = ptp_clock_index(lp->clock);
+ spin_lock_init(&lp->phc_lock);
+
+ return 0;
+}
+
+static void bfin_phc_release(struct bfin_mac_local *lp)
+{
+ ptp_clock_unregister(lp->clock);
}
#else
# define bfin_mac_hwtstamp_is_none(cfg) 0
# define bfin_mac_hwtstamp_init(dev)
-# define bfin_mac_hwtstamp_ioctl(dev, ifr, cmd) (-EOPNOTSUPP)
+# define bfin_mac_hwtstamp_set(dev, ifr) (-EOPNOTSUPP)
+# define bfin_mac_hwtstamp_get(dev, ifr) (-EOPNOTSUPP)
# define bfin_rx_hwtstamp(dev, skb)
# define bfin_tx_hwtstamp(dev, skb)
+# define bfin_phc_init(netdev, dev) 0
+# define bfin_phc_release(lp)
#endif
static inline void _tx_reclaim_skb(void)
@@ -953,7 +1082,7 @@ static inline void _tx_reclaim_skb(void)
tx_list_head->desc_a.config &= ~DMAEN;
tx_list_head->status.status_word = 0;
if (tx_list_head->skb) {
- dev_kfree_skb(tx_list_head->skb);
+ dev_consume_skb_any(tx_list_head->skb);
tx_list_head->skb = NULL;
}
tx_list_head = tx_list_head->next;
@@ -1113,7 +1242,6 @@ static void bfin_mac_rx(struct net_device *dev)
new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN);
if (!new_skb) {
- netdev_notice(dev, "rx: low on mem - packet dropped\n");
dev->stats.rx_dropped++;
goto out;
}
@@ -1375,7 +1503,9 @@ static int bfin_mac_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
switch (cmd) {
case SIOCSHWTSTAMP:
- return bfin_mac_hwtstamp_ioctl(netdev, ifr, cmd);
+ return bfin_mac_hwtstamp_set(netdev, ifr);
+ case SIOCGHWTSTAMP:
+ return bfin_mac_hwtstamp_get(netdev, ifr);
default:
if (lp->phydev)
return phy_mii_ioctl(lp->phydev, ifr, cmd);
@@ -1423,7 +1553,6 @@ static int bfin_mac_open(struct net_device *dev)
return ret;
phy_start(lp->phydev);
- phy_write(lp->phydev, MII_BMCR, BMCR_RESET);
setup_system_regs(dev);
setup_mac_addr(dev->dev_addr);
@@ -1479,7 +1608,7 @@ static const struct net_device_ops bfin_mac_netdev_ops = {
#endif
};
-static int __devinit bfin_mac_probe(struct platform_device *pdev)
+static int bfin_mac_probe(struct platform_device *pdev)
{
struct net_device *ndev;
struct bfin_mac_local *lp;
@@ -1526,12 +1655,12 @@ static int __devinit bfin_mac_probe(struct platform_device *pdev)
setup_mac_addr(ndev->dev_addr);
- if (!pdev->dev.platform_data) {
+ if (!dev_get_platdata(&pdev->dev)) {
dev_err(&pdev->dev, "Cannot get platform device bfin_mii_bus!\n");
rc = -ENODEV;
goto out_err_probe_mac;
}
- pd = pdev->dev.platform_data;
+ pd = dev_get_platdata(&pdev->dev);
lp->mii_bus = platform_get_drvdata(pd);
if (!lp->mii_bus) {
dev_err(&pdev->dev, "Cannot get mii_bus!\n");
@@ -1539,7 +1668,7 @@ static int __devinit bfin_mac_probe(struct platform_device *pdev)
goto out_err_probe_mac;
}
lp->mii_bus->priv = ndev;
- mii_bus_data = pd->dev.platform_data;
+ mii_bus_data = dev_get_platdata(&pd->dev);
rc = mii_probe(ndev, mii_bus_data->phy_mode);
if (rc) {
@@ -1565,7 +1694,7 @@ static int __devinit bfin_mac_probe(struct platform_device *pdev)
/* now, enable interrupts */
/* register irq handler */
rc = request_irq(IRQ_MAC_RX, bfin_mac_interrupt,
- IRQF_DISABLED, "EMAC_RX", ndev);
+ 0, "EMAC_RX", ndev);
if (rc) {
dev_err(&pdev->dev, "Cannot request Blackfin MAC RX IRQ!\n");
rc = -EBUSY;
@@ -1579,12 +1708,18 @@ static int __devinit bfin_mac_probe(struct platform_device *pdev)
}
bfin_mac_hwtstamp_init(ndev);
+ rc = bfin_phc_init(ndev, &pdev->dev);
+ if (rc) {
+ dev_err(&pdev->dev, "Cannot register PHC device!\n");
+ goto out_err_phc;
+ }
/* now, print out the card info, in a short format.. */
netdev_info(ndev, "%s, Version %s\n", DRV_DESC, DRV_VERSION);
return 0;
+out_err_phc:
out_err_reg_ndev:
free_irq(IRQ_MAC_RX, ndev);
out_err_request_irq:
@@ -1592,18 +1727,17 @@ out_err_mii_probe:
mdiobus_unregister(lp->mii_bus);
mdiobus_free(lp->mii_bus);
out_err_probe_mac:
- platform_set_drvdata(pdev, NULL);
free_netdev(ndev);
return rc;
}
-static int __devexit bfin_mac_remove(struct platform_device *pdev)
+static int bfin_mac_remove(struct platform_device *pdev)
{
struct net_device *ndev = platform_get_drvdata(pdev);
struct bfin_mac_local *lp = netdev_priv(ndev);
- platform_set_drvdata(pdev, NULL);
+ bfin_phc_release(lp);
lp->mii_bus->priv = NULL;
@@ -1655,7 +1789,7 @@ static int bfin_mac_resume(struct platform_device *pdev)
#define bfin_mac_resume NULL
#endif /* CONFIG_PM */
-static int __devinit bfin_mii_bus_probe(struct platform_device *pdev)
+static int bfin_mii_bus_probe(struct platform_device *pdev)
{
struct mii_bus *miibus;
struct bfin_mii_bus_platform_data *mii_bus_pd;
@@ -1685,7 +1819,6 @@ static int __devinit bfin_mii_bus_probe(struct platform_device *pdev)
goto out_err_alloc;
miibus->read = bfin_mdiobus_read;
miibus->write = bfin_mdiobus_write;
- miibus->reset = bfin_mdiobus_reset;
miibus->parent = &pdev->dev;
miibus->name = "bfin_mii_bus";
@@ -1733,13 +1866,12 @@ out_err_alloc:
return rc;
}
-static int __devexit bfin_mii_bus_remove(struct platform_device *pdev)
+static int bfin_mii_bus_remove(struct platform_device *pdev)
{
struct mii_bus *miibus = platform_get_drvdata(pdev);
struct bfin_mii_bus_platform_data *mii_bus_pd =
dev_get_platdata(&pdev->dev);
- platform_set_drvdata(pdev, NULL);
mdiobus_unregister(miibus);
kfree(miibus->irq);
mdiobus_free(miibus);
@@ -1750,7 +1882,7 @@ static int __devexit bfin_mii_bus_remove(struct platform_device *pdev)
static struct platform_driver bfin_mii_bus_driver = {
.probe = bfin_mii_bus_probe,
- .remove = __devexit_p(bfin_mii_bus_remove),
+ .remove = bfin_mii_bus_remove,
.driver = {
.name = "bfin_mii_bus",
.owner = THIS_MODULE,
@@ -1759,7 +1891,7 @@ static struct platform_driver bfin_mii_bus_driver = {
static struct platform_driver bfin_mac_driver = {
.probe = bfin_mac_probe,
- .remove = __devexit_p(bfin_mac_remove),
+ .remove = bfin_mac_remove,
.resume = bfin_mac_resume,
.suspend = bfin_mac_suspend,
.driver = {