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path: root/drivers/net/ethernet/freescale/fec.h
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Diffstat (limited to 'drivers/net/ethernet/freescale/fec.h')
-rw-r--r--drivers/net/ethernet/freescale/fec.h119
1 files changed, 119 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
index 8408c627b195..c5a3bc1475c7 100644
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -13,6 +13,12 @@
#define FEC_H
/****************************************************************************/
+#ifdef CONFIG_FEC_PTP
+#include <linux/clocksource.h>
+#include <linux/net_tstamp.h>
+#include <linux/ptp_clock_kernel.h>
+#endif
+
#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
defined(CONFIG_M520x) || defined(CONFIG_M532x) || \
defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28)
@@ -88,6 +94,13 @@ struct bufdesc {
unsigned short cbd_datlen; /* Data length */
unsigned short cbd_sc; /* Control and status info */
unsigned long cbd_bufaddr; /* Buffer address */
+#ifdef CONFIG_FEC_PTP
+ unsigned long cbd_esc;
+ unsigned long cbd_prot;
+ unsigned long cbd_bdu;
+ unsigned long ts;
+ unsigned short res0[4];
+#endif
};
#else
struct bufdesc {
@@ -147,6 +160,112 @@ struct bufdesc {
#define BD_ENET_TX_CSL ((ushort)0x0001)
#define BD_ENET_TX_STATS ((ushort)0x03ff) /* All status bits */
+/*enhanced buffer desciptor control/status used by Ethernet transmit*/
+#define BD_ENET_TX_INT 0x40000000
+#define BD_ENET_TX_TS 0x20000000
+
+
+/* This device has up to three irqs on some platforms */
+#define FEC_IRQ_NUM 3
+
+/* The number of Tx and Rx buffers. These are allocated from the page
+ * pool. The code may assume these are power of two, so it it best
+ * to keep them that size.
+ * We don't need to allocate pages for the transmitter. We just use
+ * the skbuffer directly.
+ */
+
+#define FEC_ENET_RX_PAGES 8
+#define FEC_ENET_RX_FRSIZE 2048
+#define FEC_ENET_RX_FRPPG (PAGE_SIZE / FEC_ENET_RX_FRSIZE)
+#define RX_RING_SIZE (FEC_ENET_RX_FRPPG * FEC_ENET_RX_PAGES)
+#define FEC_ENET_TX_FRSIZE 2048
+#define FEC_ENET_TX_FRPPG (PAGE_SIZE / FEC_ENET_TX_FRSIZE)
+#define TX_RING_SIZE 16 /* Must be power of two */
+#define TX_RING_MOD_MASK 15 /* for this to work */
+
+#define BD_ENET_RX_INT 0x00800000
+#define BD_ENET_RX_PTP ((ushort)0x0400)
+
+/* The FEC buffer descriptors track the ring buffers. The rx_bd_base and
+ * tx_bd_base always point to the base of the buffer descriptors. The
+ * cur_rx and cur_tx point to the currently available buffer.
+ * The dirty_tx tracks the current buffer that is being sent by the
+ * controller. The cur_tx and dirty_tx are equal under both completely
+ * empty and completely full conditions. The empty/ready indicator in
+ * the buffer descriptor determines the actual condition.
+ */
+struct fec_enet_private {
+ /* Hardware registers of the FEC device */
+ void __iomem *hwp;
+
+ struct net_device *netdev;
+
+ struct clk *clk_ipg;
+ struct clk *clk_ahb;
+#ifdef CONFIG_FEC_PTP
+ struct clk *clk_ptp;
+#endif
+
+ /* The saved address of a sent-in-place packet/buffer, for skfree(). */
+ unsigned char *tx_bounce[TX_RING_SIZE];
+ struct sk_buff *tx_skbuff[TX_RING_SIZE];
+ struct sk_buff *rx_skbuff[RX_RING_SIZE];
+ ushort skb_cur;
+ ushort skb_dirty;
+
+ /* CPM dual port RAM relative addresses */
+ dma_addr_t bd_dma;
+ /* Address of Rx and Tx buffers */
+ struct bufdesc *rx_bd_base;
+ struct bufdesc *tx_bd_base;
+ /* The next free ring entry */
+ struct bufdesc *cur_rx, *cur_tx;
+ /* The ring entries to be free()ed */
+ struct bufdesc *dirty_tx;
+
+ uint tx_full;
+ /* hold while accessing the HW like ringbuffer for tx/rx but not MAC */
+ spinlock_t hw_lock;
+
+ struct platform_device *pdev;
+
+ int opened;
+ int dev_id;
+
+ /* Phylib and MDIO interface */
+ struct mii_bus *mii_bus;
+ struct phy_device *phy_dev;
+ int mii_timeout;
+ uint phy_speed;
+ phy_interface_t phy_interface;
+ int link;
+ int full_duplex;
+ struct completion mdio_done;
+ int irq[FEC_IRQ_NUM];
+
+#ifdef CONFIG_FEC_PTP
+ struct ptp_clock *ptp_clock;
+ struct ptp_clock_info ptp_caps;
+ unsigned long last_overflow_check;
+ spinlock_t tmreg_lock;
+ struct cyclecounter cc;
+ struct timecounter tc;
+ int rx_hwtstamp_filter;
+ u32 base_incval;
+ u32 cycle_speed;
+ int hwts_rx_en;
+ int hwts_tx_en;
+ struct timer_list time_keep;
+#endif
+
+};
+
+#ifdef CONFIG_FEC_PTP
+void fec_ptp_init(struct net_device *ndev, struct platform_device *pdev);
+void fec_ptp_start_cyclecounter(struct net_device *ndev);
+int fec_ptp_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd);
+#endif
/****************************************************************************/
#endif /* FEC_H */