Initial file dump from open source releaseHEADmaster

1 files changed, 282 insertions, 0 deletions

diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
new file mode 100644
index 00000000..9ce5b718
--- /dev/null
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -0,0 +1,282 @@
+/****************************************************************************/
+
+/*
+ *	fec.h  --  Fast Ethernet Controller for Motorola ColdFire SoC
+ *		   processors.
+ *
+ *	(C) Copyright 2000-2005, Greg Ungerer (gerg@snapgear.com)
+ *	(C) Copyright 2000-2001, Lineo (www.lineo.com)
+ */
+
+/****************************************************************************/
+#ifndef FEC_H
+#define	FEC_H
+/****************************************************************************/
+
+#include <linux/clocksource.h>
+#include <linux/net_tstamp.h>
+#include <linux/ptp_clock_kernel.h>
+
+#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
+    defined(CONFIG_M520x) || defined(CONFIG_M532x) || \
+    defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28)
+/*
+ *	Just figures, Motorola would have to change the offsets for
+ *	registers in the same peripheral device on different models
+ *	of the ColdFire!
+ */
+#define FEC_IEVENT		0x004 /* Interrupt event reg */
+#define FEC_IMASK		0x008 /* Interrupt mask reg */
+#define FEC_R_DES_ACTIVE	0x010 /* Receive descriptor reg */
+#define FEC_X_DES_ACTIVE	0x014 /* Transmit descriptor reg */
+#define FEC_ECNTRL		0x024 /* Ethernet control reg */
+#define FEC_MII_DATA		0x040 /* MII manage frame reg */
+#define FEC_MII_SPEED		0x044 /* MII speed control reg */
+#define FEC_MIB_CTRLSTAT	0x064 /* MIB control/status reg */
+#define FEC_R_CNTRL		0x084 /* Receive control reg */
+#define FEC_X_CNTRL		0x0c4 /* Transmit Control reg */
+#define FEC_ADDR_LOW		0x0e4 /* Low 32bits MAC address */
+#define FEC_ADDR_HIGH		0x0e8 /* High 16bits MAC address */
+#define FEC_OPD			0x0ec /* Opcode + Pause duration */
+#define FEC_HASH_TABLE_HIGH	0x118 /* High 32bits hash table */
+#define FEC_HASH_TABLE_LOW	0x11c /* Low 32bits hash table */
+#define FEC_GRP_HASH_TABLE_HIGH	0x120 /* High 32bits hash table */
+#define FEC_GRP_HASH_TABLE_LOW	0x124 /* Low 32bits hash table */
+#define FEC_X_WMRK		0x144 /* FIFO transmit water mark */
+#define FEC_R_BOUND		0x14c /* FIFO receive bound reg */
+#define FEC_R_FSTART		0x150 /* FIFO receive start reg */
+#define FEC_R_DES_START		0x180 /* Receive descriptor ring */
+#define FEC_X_DES_START		0x184 /* Transmit descriptor ring */
+#define FEC_R_BUFF_SIZE		0x188 /* Maximum receive buff size */
+#define FEC_R_FIFO_RSFL		0x190 /* Receive FIFO section full threshold */
+#define FEC_R_FIFO_RSEM		0x194 /* Receive FIFO section empty threshold */
+#define FEC_R_FIFO_RAEM		0x198 /* Receive FIFO almost empty threshold */
+#define FEC_R_FIFO_RAFL		0x19c /* Receive FIFO almost full threshold */
+#define FEC_RACC		0x1C4 /* Receive Accelerator function */
+#define FEC_MIIGSK_CFGR		0x300 /* MIIGSK Configuration reg */
+#define FEC_MIIGSK_ENR		0x308 /* MIIGSK Enable reg */
+
+#define BM_MIIGSK_CFGR_MII		0x00
+#define BM_MIIGSK_CFGR_RMII		0x01
+#define BM_MIIGSK_CFGR_FRCONT_10M	0x40
+
+#else
+
+#define FEC_ECNTRL		0x000 /* Ethernet control reg */
+#define FEC_IEVENT		0x004 /* Interrupt even reg */
+#define FEC_IMASK		0x008 /* Interrupt mask reg */
+#define FEC_IVEC		0x00c /* Interrupt vec status reg */
+#define FEC_R_DES_ACTIVE	0x010 /* Receive descriptor reg */
+#define FEC_X_DES_ACTIVE	0x014 /* Transmit descriptor reg */
+#define FEC_MII_DATA		0x040 /* MII manage frame reg */
+#define FEC_MII_SPEED		0x044 /* MII speed control reg */
+#define FEC_R_BOUND		0x08c /* FIFO receive bound reg */
+#define FEC_R_FSTART		0x090 /* FIFO receive start reg */
+#define FEC_X_WMRK		0x0a4 /* FIFO transmit water mark */
+#define FEC_X_FSTART		0x0ac /* FIFO transmit start reg */
+#define FEC_R_CNTRL		0x104 /* Receive control reg */
+#define FEC_MAX_FRM_LEN		0x108 /* Maximum frame length reg */
+#define FEC_X_CNTRL		0x144 /* Transmit Control reg */
+#define FEC_ADDR_LOW		0x3c0 /* Low 32bits MAC address */
+#define FEC_ADDR_HIGH		0x3c4 /* High 16bits MAC address */
+#define FEC_GRP_HASH_TABLE_HIGH	0x3c8 /* High 32bits hash table */
+#define FEC_GRP_HASH_TABLE_LOW	0x3cc /* Low 32bits hash table */
+#define FEC_R_DES_START		0x3d0 /* Receive descriptor ring */
+#define FEC_X_DES_START		0x3d4 /* Transmit descriptor ring */
+#define FEC_R_BUFF_SIZE		0x3d8 /* Maximum receive buff size */
+#define FEC_FIFO_RAM		0x400 /* FIFO RAM buffer */
+
+#endif /* CONFIG_M5272 */
+
+
+/*
+ *	Define the buffer descriptor structure.
+ */
+#if defined(CONFIG_ARCH_MXC) || defined(CONFIG_SOC_IMX28)
+struct bufdesc {
+	unsigned short cbd_datlen;	/* Data length */
+	unsigned short cbd_sc;	/* Control and status info */
+	unsigned long cbd_bufaddr;	/* Buffer address */
+};
+#else
+struct bufdesc {
+	unsigned short	cbd_sc;			/* Control and status info */
+	unsigned short	cbd_datlen;		/* Data length */
+	unsigned long	cbd_bufaddr;		/* Buffer address */
+};
+#endif
+
+struct bufdesc_ex {
+	struct bufdesc desc;
+	unsigned long cbd_esc;
+	unsigned long cbd_prot;
+	unsigned long cbd_bdu;
+	unsigned long ts;
+	unsigned short res0[4];
+};
+
+/*
+ *	The following definitions courtesy of commproc.h, which where
+ *	Copyright (c) 1997 Dan Malek (dmalek@jlc.net).
+ */
+#define BD_SC_EMPTY     ((ushort)0x8000)        /* Receive is empty */
+#define BD_SC_READY     ((ushort)0x8000)        /* Transmit is ready */
+#define BD_SC_WRAP      ((ushort)0x2000)        /* Last buffer descriptor */
+#define BD_SC_INTRPT    ((ushort)0x1000)        /* Interrupt on change */
+#define BD_SC_CM        ((ushort)0x0200)        /* Continuous mode */
+#define BD_SC_ID        ((ushort)0x0100)        /* Rec'd too many idles */
+#define BD_SC_P         ((ushort)0x0100)        /* xmt preamble */
+#define BD_SC_BR        ((ushort)0x0020)        /* Break received */
+#define BD_SC_FR        ((ushort)0x0010)        /* Framing error */
+#define BD_SC_PR        ((ushort)0x0008)        /* Parity error */
+#define BD_SC_OV        ((ushort)0x0002)        /* Overrun */
+#define BD_SC_CD        ((ushort)0x0001)        /* ?? */
+
+/* Buffer descriptor control/status used by Ethernet receive.
+*/
+#define BD_ENET_RX_EMPTY        ((ushort)0x8000)
+#define BD_ENET_RX_WRAP         ((ushort)0x2000)
+#define BD_ENET_RX_INTR         ((ushort)0x1000)
+#define BD_ENET_RX_LAST         ((ushort)0x0800)
+#define BD_ENET_RX_FIRST        ((ushort)0x0400)
+#define BD_ENET_RX_MISS         ((ushort)0x0100)
+#define BD_ENET_RX_LG           ((ushort)0x0020)
+#define BD_ENET_RX_NO           ((ushort)0x0010)
+#define BD_ENET_RX_SH           ((ushort)0x0008)
+#define BD_ENET_RX_CR           ((ushort)0x0004)
+#define BD_ENET_RX_OV           ((ushort)0x0002)
+#define BD_ENET_RX_CL           ((ushort)0x0001)
+#define BD_ENET_RX_STATS        ((ushort)0x013f)        /* All status bits */
+
+/* Buffer descriptor control/status used by Ethernet transmit.
+*/
+#define BD_ENET_TX_READY        ((ushort)0x8000)
+#define BD_ENET_TX_PAD          ((ushort)0x4000)
+#define BD_ENET_TX_WRAP         ((ushort)0x2000)
+#define BD_ENET_TX_INTR         ((ushort)0x1000)
+#define BD_ENET_TX_LAST         ((ushort)0x0800)
+#define BD_ENET_TX_TC           ((ushort)0x0400)
+#define BD_ENET_TX_DEF          ((ushort)0x0200)
+#define BD_ENET_TX_HB           ((ushort)0x0100)
+#define BD_ENET_TX_LC           ((ushort)0x0080)
+#define BD_ENET_TX_RL           ((ushort)0x0040)
+#define BD_ENET_TX_RCMASK       ((ushort)0x003c)
+#define BD_ENET_TX_UN           ((ushort)0x0002)
+#define BD_ENET_TX_CSL          ((ushort)0x0001)
+#define BD_ENET_TX_STATS        ((ushort)0x03ff)        /* All status bits */
+
+/*enhanced buffer descriptor control/status used by Ethernet transmit*/
+#define BD_ENET_TX_INT          0x40000000
+#define BD_ENET_TX_TS           0x20000000
+#define BD_ENET_TX_PINS         0x10000000
+#define BD_ENET_TX_IINS         0x08000000
+
+
+/* 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)
+#define BD_ENET_RX_ICE		0x00000020
+#define BD_ENET_RX_PCR		0x00000010
+#define FLAG_RX_CSUM_ENABLED	(BD_ENET_RX_ICE | BD_ENET_RX_PCR)
+#define FLAG_RX_CSUM_ERROR	(BD_ENET_RX_ICE | BD_ENET_RX_PCR)
+
+struct fec_enet_delayed_work {
+	struct delayed_work delay_work;
+	bool timeout;
+};
+
+/* 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;
+	struct clk *clk_enet_out;
+	struct clk *clk_ptp;
+
+	/* 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];
+
+	/* 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;
+
+	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;
+	int	speed;
+	struct	completion mdio_done;
+	int	irq[FEC_IRQ_NUM];
+	int	bufdesc_ex;
+	int	pause_flag;
+
+	struct	napi_struct napi;
+	int	csum_flags;
+
+	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;
+	struct fec_enet_delayed_work delay_work;
+};
+
+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 /* FEC_H */