/*
* Copyright (C) 1999 - 2010 Intel Corporation.
- * Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD.
+ * Copyright (C) 2010 - 2012 LAPIS SEMICONDUCTOR CO., LTD.
*
* This code was derived from the Intel e1000e Linux driver.
*
#include "pch_gbe.h"
#include "pch_gbe_api.h"
+#include <linux/module.h>
+#ifdef CONFIG_PCH_PTP
+#include <linux/net_tstamp.h>
+#include <linux/ptp_classify.h>
+#endif
#define DRV_VERSION "1.00"
const char pch_driver_version[] = DRV_VERSION;
#define PCH_GBE_INT_DISABLE_ALL 0
+#ifdef CONFIG_PCH_PTP
+/* Macros for ieee1588 */
+#define TICKS_NS_SHIFT 5
+
+/* 0x40 Time Synchronization Channel Control Register Bits */
+#define MASTER_MODE (1<<0)
+#define SLAVE_MODE (0<<0)
+#define V2_MODE (1<<31)
+#define CAP_MODE0 (0<<16)
+#define CAP_MODE2 (1<<17)
+
+/* 0x44 Time Synchronization Channel Event Register Bits */
+#define TX_SNAPSHOT_LOCKED (1<<0)
+#define RX_SNAPSHOT_LOCKED (1<<1)
+#endif
+
static unsigned int copybreak __read_mostly = PCH_GBE_COPYBREAK_DEFAULT;
static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg);
static void pch_gbe_mdio_write(struct net_device *netdev, int addr, int reg,
int data);
+#ifdef CONFIG_PCH_PTP
+static struct sock_filter ptp_filter[] = {
+ PTP_FILTER
+};
+
+static int pch_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid)
+{
+ u8 *data = skb->data;
+ unsigned int offset;
+ u16 *hi, *id;
+ u32 lo;
+
+ if ((sk_run_filter(skb, ptp_filter) != PTP_CLASS_V2_IPV4) &&
+ (sk_run_filter(skb, ptp_filter) != PTP_CLASS_V1_IPV4)) {
+ return 0;
+ }
+
+ offset = ETH_HLEN + IPV4_HLEN(data) + UDP_HLEN;
+
+ if (skb->len < offset + OFF_PTP_SEQUENCE_ID + sizeof(seqid))
+ return 0;
+
+ hi = (u16 *)(data + offset + OFF_PTP_SOURCE_UUID);
+ id = (u16 *)(data + offset + OFF_PTP_SEQUENCE_ID);
+
+ memcpy(&lo, &hi[1], sizeof(lo));
+
+ return (uid_hi == *hi &&
+ uid_lo == lo &&
+ seqid == *id);
+}
+
+static void pch_rx_timestamp(
+ struct pch_gbe_adapter *adapter, struct sk_buff *skb)
+{
+ struct skb_shared_hwtstamps *shhwtstamps;
+ struct pci_dev *pdev;
+ u64 ns;
+ u32 hi, lo, val;
+ u16 uid, seq;
+
+ if (!adapter->hwts_rx_en)
+ return;
+
+ /* Get ieee1588's dev information */
+ pdev = adapter->ptp_pdev;
+
+ val = pch_ch_event_read(pdev);
+
+ if (!(val & RX_SNAPSHOT_LOCKED))
+ return;
+
+ lo = pch_src_uuid_lo_read(pdev);
+ hi = pch_src_uuid_hi_read(pdev);
+
+ uid = hi & 0xffff;
+ seq = (hi >> 16) & 0xffff;
+
+ if (!pch_ptp_match(skb, htons(uid), htonl(lo), htons(seq)))
+ goto out;
+
+ ns = pch_rx_snap_read(pdev);
+ ns <<= TICKS_NS_SHIFT;
+
+ shhwtstamps = skb_hwtstamps(skb);
+ memset(shhwtstamps, 0, sizeof(*shhwtstamps));
+ shhwtstamps->hwtstamp = ns_to_ktime(ns);
+out:
+ pch_ch_event_write(pdev, RX_SNAPSHOT_LOCKED);
+}
+
+static void pch_tx_timestamp(
+ struct pch_gbe_adapter *adapter, struct sk_buff *skb)
+{
+ struct skb_shared_hwtstamps shhwtstamps;
+ struct pci_dev *pdev;
+ struct skb_shared_info *shtx;
+ u64 ns;
+ u32 cnt, val;
+
+ shtx = skb_shinfo(skb);
+ if (unlikely(shtx->tx_flags & SKBTX_HW_TSTAMP && adapter->hwts_tx_en))
+ shtx->tx_flags |= SKBTX_IN_PROGRESS;
+ else
+ return;
+
+ /* Get ieee1588's dev information */
+ pdev = adapter->ptp_pdev;
+
+ /*
+ * This really stinks, but we have to poll for the Tx time stamp.
+ * Usually, the time stamp is ready after 4 to 6 microseconds.
+ */
+ for (cnt = 0; cnt < 100; cnt++) {
+ val = pch_ch_event_read(pdev);
+ if (val & TX_SNAPSHOT_LOCKED)
+ break;
+ udelay(1);
+ }
+ if (!(val & TX_SNAPSHOT_LOCKED)) {
+ shtx->tx_flags &= ~SKBTX_IN_PROGRESS;
+ return;
+ }
+
+ ns = pch_tx_snap_read(pdev);
+ ns <<= TICKS_NS_SHIFT;
+
+ memset(&shhwtstamps, 0, sizeof(shhwtstamps));
+ shhwtstamps.hwtstamp = ns_to_ktime(ns);
+ skb_tstamp_tx(skb, &shhwtstamps);
+
+ pch_ch_event_write(pdev, TX_SNAPSHOT_LOCKED);
+}
+
+static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ struct hwtstamp_config cfg;
+ struct pch_gbe_adapter *adapter = netdev_priv(netdev);
+ struct pci_dev *pdev;
+
+ if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
+ return -EFAULT;
+
+ if (cfg.flags) /* reserved for future extensions */
+ return -EINVAL;
+
+ /* Get ieee1588's dev information */
+ pdev = adapter->ptp_pdev;
+
+ switch (cfg.tx_type) {
+ case HWTSTAMP_TX_OFF:
+ adapter->hwts_tx_en = 0;
+ break;
+ case HWTSTAMP_TX_ON:
+ adapter->hwts_tx_en = 1;
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ switch (cfg.rx_filter) {
+ case HWTSTAMP_FILTER_NONE:
+ adapter->hwts_rx_en = 0;
+ break;
+ case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
+ adapter->hwts_rx_en = 0;
+ pch_ch_control_write(pdev, (SLAVE_MODE | CAP_MODE0));
+ break;
+ case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
+ adapter->hwts_rx_en = 1;
+ pch_ch_control_write(pdev, (MASTER_MODE | CAP_MODE0));
+ break;
+ case HWTSTAMP_FILTER_PTP_V2_EVENT:
+ adapter->hwts_rx_en = 1;
+ pch_ch_control_write(pdev, (V2_MODE | CAP_MODE2));
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ /* Clear out any old time stamps. */
+ pch_ch_event_write(pdev, TX_SNAPSHOT_LOCKED | RX_SNAPSHOT_LOCKED);
+
+ return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
+}
+#endif
+
inline void pch_gbe_mac_load_mac_addr(struct pch_gbe_hw *hw)
{
iowrite32(0x01, &hw->reg->MAC_ADDR_LOAD);
*/
static int pch_gbe_alloc_queues(struct pch_gbe_adapter *adapter)
{
- int size;
-
- size = (int)sizeof(struct pch_gbe_tx_ring);
- adapter->tx_ring = kzalloc(size, GFP_KERNEL);
+ adapter->tx_ring = kzalloc(sizeof(*adapter->tx_ring), GFP_KERNEL);
if (!adapter->tx_ring)
return -ENOMEM;
- size = (int)sizeof(struct pch_gbe_rx_ring);
- adapter->rx_ring = kzalloc(size, GFP_KERNEL);
+
+ adapter->rx_ring = kzalloc(sizeof(*adapter->rx_ring), GFP_KERNEL);
if (!adapter->rx_ring) {
kfree(adapter->tx_ring);
return -ENOMEM;
struct sk_buff *tmp_skb;
unsigned int frame_ctrl;
unsigned int ring_num;
- unsigned long flags;
/*-- Set frame control --*/
frame_ctrl = 0;
}
}
}
- spin_lock_irqsave(&tx_ring->tx_lock, flags);
+
ring_num = tx_ring->next_to_use;
if (unlikely((ring_num + 1) == tx_ring->count))
tx_ring->next_to_use = 0;
else
tx_ring->next_to_use = ring_num + 1;
- spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
+
buffer_info = &tx_ring->buffer_info[ring_num];
tmp_skb = buffer_info->skb;
iowrite32(tx_ring->dma +
(int)sizeof(struct pch_gbe_tx_desc) * ring_num,
&hw->reg->TX_DSC_SW_P);
+
+#ifdef CONFIG_PCH_PTP
+ pch_tx_timestamp(adapter, skb);
+#endif
+
dev_kfree_skb_any(skb);
}
/* When request status is Receive interruption */
if ((int_st & (PCH_GBE_INT_RX_DMA_CMPLT | PCH_GBE_INT_TX_CMPLT)) ||
- (adapter->rx_stop_flag == true)) {
+ (adapter->rx_stop_flag)) {
if (likely(napi_schedule_prep(&adapter->napi))) {
/* Enable only Rx Descriptor empty */
atomic_inc(&adapter->irq_sem);
&rx_ring->rx_buff_pool_logic,
GFP_KERNEL);
if (!rx_ring->rx_buff_pool) {
- pr_err("Unable to allocate memory for the receive poll buffer\n");
+ pr_err("Unable to allocate memory for the receive pool buffer\n");
return -ENOMEM;
}
memset(rx_ring->rx_buff_pool, 0, size);
pr_debug("called pch_gbe_unmap_and_free_tx_resource() %d count\n",
cleaned_count);
/* Recover from running out of Tx resources in xmit_frame */
+ spin_lock(&tx_ring->tx_lock);
if (unlikely(cleaned && (netif_queue_stopped(adapter->netdev)))) {
netif_wake_queue(adapter->netdev);
adapter->stats.tx_restart_count++;
pr_debug("Tx wake queue\n");
}
- spin_lock(&adapter->tx_queue_lock);
+
tx_ring->next_to_clean = i;
- spin_unlock(&adapter->tx_queue_lock);
+
pr_debug("next_to_clean : %d\n", tx_ring->next_to_clean);
+ spin_unlock(&tx_ring->tx_lock);
return cleaned;
}
adapter->stats.multicast++;
/* Write meta date of skb */
skb_put(skb, length);
+
+#ifdef CONFIG_PCH_PTP
+ pch_rx_timestamp(adapter, skb);
+#endif
+
skb->protocol = eth_type_trans(skb, netdev);
if (tcp_ip_status & PCH_GBE_RXD_ACC_STAT_TCPIPOK)
skb->ip_summed = CHECKSUM_NONE;
size = (int)sizeof(struct pch_gbe_buffer) * tx_ring->count;
tx_ring->buffer_info = vzalloc(size);
- if (!tx_ring->buffer_info) {
- pr_err("Unable to allocate memory for the buffer information\n");
+ if (!tx_ring->buffer_info)
return -ENOMEM;
- }
tx_ring->size = tx_ring->count * (int)sizeof(struct pch_gbe_tx_desc);
size = (int)sizeof(struct pch_gbe_buffer) * rx_ring->count;
rx_ring->buffer_info = vzalloc(size);
- if (!rx_ring->buffer_info) {
- pr_err("Unable to allocate memory for the receive descriptor ring\n");
+ if (!rx_ring->buffer_info)
return -ENOMEM;
- }
+
rx_ring->size = rx_ring->count * (int)sizeof(struct pch_gbe_rx_desc);
rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
&rx_ring->dma, GFP_KERNEL);
struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring;
int err;
+ /* Ensure we have a valid MAC */
+ if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
+ pr_err("Error: Invalid MAC address\n");
+ return -EINVAL;
+ }
+
/* hardware has been reset, we need to reload some things */
pch_gbe_set_multi(netdev);
return -ENOMEM;
}
spin_lock_init(&adapter->hw.miim_lock);
- spin_lock_init(&adapter->tx_queue_lock);
spin_lock_init(&adapter->stats_lock);
spin_lock_init(&adapter->ethtool_lock);
atomic_set(&adapter->irq_sem, 0);
tx_ring->next_to_use, tx_ring->next_to_clean);
return NETDEV_TX_BUSY;
}
- spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
/* CRC,ITAG no support */
pch_gbe_tx_queue(adapter, tx_ring, skb);
+ spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
return NETDEV_TX_OK;
}
* Returns
* 0: HW state updated successfully
*/
-static int pch_gbe_set_features(struct net_device *netdev, u32 features)
+static int pch_gbe_set_features(struct net_device *netdev,
+ netdev_features_t features)
{
struct pch_gbe_adapter *adapter = netdev_priv(netdev);
- u32 changed = features ^ netdev->features;
+ netdev_features_t changed = features ^ netdev->features;
if (!(changed & NETIF_F_RXCSUM))
return 0;
pr_debug("cmd : 0x%04x\n", cmd);
+#ifdef CONFIG_PCH_PTP
+ if (cmd == SIOCSHWTSTAMP)
+ return hwtstamp_ioctl(netdev, ifr, cmd);
+#endif
+
return generic_mii_ioctl(&adapter->mii, if_mii(ifr), cmd, NULL);
}
netdev = alloc_etherdev((int)sizeof(struct pch_gbe_adapter));
if (!netdev) {
ret = -ENOMEM;
- dev_err(&pdev->dev,
- "ERR: Can't allocate and set up an Ethernet device\n");
goto err_release_pci;
}
SET_NETDEV_DEV(netdev, &pdev->dev);
goto err_free_netdev;
}
+#ifdef CONFIG_PCH_PTP
+ adapter->ptp_pdev = pci_get_bus_and_slot(adapter->pdev->bus->number,
+ PCI_DEVFN(12, 4));
+ if (ptp_filter_init(ptp_filter, ARRAY_SIZE(ptp_filter))) {
+ pr_err("Bad ptp filter\n");
+ return -EINVAL;
+ }
+#endif
+
netdev->netdev_ops = &pch_gbe_netdev_ops;
netdev->watchdog_timeo = PCH_GBE_WATCHDOG_PERIOD;
netif_napi_add(netdev, &adapter->napi,
memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
if (!is_valid_ether_addr(netdev->dev_addr)) {
- dev_err(&pdev->dev, "Invalid MAC Address\n");
- ret = -EIO;
- goto err_free_adapter;
+ /*
+ * If the MAC is invalid (or just missing), display a warning
+ * but do not abort setting up the device. pch_gbe_up will
+ * prevent the interface from being brought up until a valid MAC
+ * is set.
+ */
+ dev_err(&pdev->dev, "Invalid MAC address, "
+ "interface disabled.\n");
}
setup_timer(&adapter->watchdog_timer, pch_gbe_watchdog,
(unsigned long)adapter);
netif_carrier_off(netdev);
netif_stop_queue(netdev);
- dev_dbg(&pdev->dev, "OKIsemi(R) PCH Network Connection\n");
+ dev_dbg(&pdev->dev, "PCH Network Connection\n");
device_set_wakeup_enable(&pdev->dev, 1);
return 0;
module_exit(pch_gbe_exit_module);
MODULE_DESCRIPTION("EG20T PCH Gigabit ethernet Driver");
-MODULE_AUTHOR("OKI SEMICONDUCTOR, <toshiharu-linux@dsn.okisemi.com>");
+MODULE_AUTHOR("LAPIS SEMICONDUCTOR, <tshimizu818@gmail.com>");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
MODULE_DEVICE_TABLE(pci, pch_gbe_pcidev_id);
projects / linux-flexiantxendom0-3.2.10.git / blobdiff