[PATCH] Freescale QE UCC gigabit ethernet driver

QE(QUICC Engine) is a new generation communication coprocessor, which can
be found on some of the latest Freescale PowerQUICC CPUs(e.g.  MPC8360).
The UCC(Unified Communications Controller) module of QE can work as gigabit
Ethernet device.  This patch provides driver for the device.
Signed-off-by: Shlomi Gridish <gridish@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/Kconfig

@@ -2219,6 +2219,33 @@ config GFAR_NAPI
 	bool "NAPI Support"
 	depends on GIANFAR
 
+config UCC_GETH
+	tristate "Freescale QE UCC GETH"
+	depends on QUICC_ENGINE && UCC_FAST
+	help
+	  This driver supports the Gigabit Ethernet mode of QE UCC.
+	  QE can be found on MPC836x CPUs.
+
+config UGETH_NAPI
+	bool "NAPI Support"
+	depends on UCC_GETH
+
+config UGETH_MAGIC_PACKET
+	bool "Magic Packet detection support"
+	depends on UCC_GETH
+
+config UGETH_FILTERING
+	bool "Mac address filtering support"
+	depends on UCC_GETH
+
+config UGETH_TX_ON_DEMOND
+	bool "Transmit on Demond support"
+	depends on UCC_GETH
+
+config UGETH_HAS_GIGA
+	bool
+	depends on UCC_GETH && MPC836x
+
 config MV643XX_ETH
 	tristate "MV-643XX Ethernet support"
 	depends on MOMENCO_OCELOT_C || MOMENCO_JAGUAR_ATX || MV64360 || MOMENCO_OCELOT_3 || PPC_MULTIPLATFORM

drivers/net/Makefile

@@ -18,6 +18,9 @@ gianfar_driver-objs := gianfar.o \
 		gianfar_mii.o \
 		gianfar_sysfs.o
 
+obj-$(CONFIG_UCC_GETH) += ucc_geth_driver.o
+ucc_geth_driver-objs := ucc_geth.o ucc_geth_phy.o
+
 #
 # link order important here
 #

drivers/net/ucc_geth_phy.h

+/*
+ * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.
+ *
+ * Author: Shlomi Gridish <gridish@freescale.com>
+ *
+ * Description:
+ * UCC GETH Driver -- PHY handling
+ *
+ * Changelog:
+ * Jun 28, 2006 Li Yang <LeoLi@freescale.com>
+ * - Rearrange code and style fixes
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ */
+#ifndef __UCC_GETH_PHY_H__
+#define __UCC_GETH_PHY_H__
+
+#define MII_end ((u32)-2)
+#define MII_read ((u32)-1)
+
+#define MIIMIND_BUSY            0x00000001
+#define MIIMIND_NOTVALID        0x00000004
+
+#define UGETH_AN_TIMEOUT        2000
+
+/* 1000BT control (Marvell & BCM54xx at least) */
+#define MII_1000BASETCONTROL                  0x09
+#define MII_1000BASETCONTROL_FULLDUPLEXCAP    0x0200
+#define MII_1000BASETCONTROL_HALFDUPLEXCAP    0x0100
+
+/* Cicada Extended Control Register 1 */
+#define MII_CIS8201_EXT_CON1        0x17
+#define MII_CIS8201_EXTCON1_INIT    0x0000
+
+/* Cicada Interrupt Mask Register */
+#define MII_CIS8201_IMASK           0x19
+#define MII_CIS8201_IMASK_IEN       0x8000
+#define MII_CIS8201_IMASK_SPEED     0x4000
+#define MII_CIS8201_IMASK_LINK      0x2000
+#define MII_CIS8201_IMASK_DUPLEX    0x1000
+#define MII_CIS8201_IMASK_MASK      0xf000
+
+/* Cicada Interrupt Status Register */
+#define MII_CIS8201_ISTAT           0x1a
+#define MII_CIS8201_ISTAT_STATUS    0x8000
+#define MII_CIS8201_ISTAT_SPEED     0x4000
+#define MII_CIS8201_ISTAT_LINK      0x2000
+#define MII_CIS8201_ISTAT_DUPLEX    0x1000
+
+/* Cicada Auxiliary Control/Status Register */
+#define MII_CIS8201_AUX_CONSTAT        0x1c
+#define MII_CIS8201_AUXCONSTAT_INIT    0x0004
+#define MII_CIS8201_AUXCONSTAT_DUPLEX  0x0020
+#define MII_CIS8201_AUXCONSTAT_SPEED   0x0018
+#define MII_CIS8201_AUXCONSTAT_GBIT    0x0010
+#define MII_CIS8201_AUXCONSTAT_100     0x0008
+
+/* 88E1011 PHY Status Register */
+#define MII_M1011_PHY_SPEC_STATUS               0x11
+#define MII_M1011_PHY_SPEC_STATUS_1000          0x8000
+#define MII_M1011_PHY_SPEC_STATUS_100           0x4000
+#define MII_M1011_PHY_SPEC_STATUS_SPD_MASK      0xc000
+#define MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX    0x2000
+#define MII_M1011_PHY_SPEC_STATUS_RESOLVED      0x0800
+#define MII_M1011_PHY_SPEC_STATUS_LINK          0x0400
+
+#define MII_M1011_IEVENT                0x13
+#define MII_M1011_IEVENT_CLEAR          0x0000
+
+#define MII_M1011_IMASK                 0x12
+#define MII_M1011_IMASK_INIT            0x6400
+#define MII_M1011_IMASK_CLEAR           0x0000
+
+#define MII_DM9161_SCR                  0x10
+#define MII_DM9161_SCR_INIT             0x0610
+
+/* DM9161 Specified Configuration and Status Register */
+#define MII_DM9161_SCSR                 0x11
+#define MII_DM9161_SCSR_100F            0x8000
+#define MII_DM9161_SCSR_100H            0x4000
+#define MII_DM9161_SCSR_10F             0x2000
+#define MII_DM9161_SCSR_10H             0x1000
+
+/* DM9161 Interrupt Register */
+#define MII_DM9161_INTR                 0x15
+#define MII_DM9161_INTR_PEND            0x8000
+#define MII_DM9161_INTR_DPLX_MASK       0x0800
+#define MII_DM9161_INTR_SPD_MASK        0x0400
+#define MII_DM9161_INTR_LINK_MASK       0x0200
+#define MII_DM9161_INTR_MASK            0x0100
+#define MII_DM9161_INTR_DPLX_CHANGE     0x0010
+#define MII_DM9161_INTR_SPD_CHANGE      0x0008
+#define MII_DM9161_INTR_LINK_CHANGE     0x0004
+#define MII_DM9161_INTR_INIT            0x0000
+#define MII_DM9161_INTR_STOP    \
+(MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \
+ | MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK)
+
+/* DM9161 10BT Configuration/Status */
+#define MII_DM9161_10BTCSR              0x12
+#define MII_DM9161_10BTCSR_INIT         0x7800
+
+#define MII_BASIC_FEATURES    (SUPPORTED_10baseT_Half | \
+                 SUPPORTED_10baseT_Full | \
+                 SUPPORTED_100baseT_Half | \
+                 SUPPORTED_100baseT_Full | \
+                 SUPPORTED_Autoneg | \
+                 SUPPORTED_TP | \
+                 SUPPORTED_MII)
+
+#define MII_GBIT_FEATURES    (MII_BASIC_FEATURES | \
+                 SUPPORTED_1000baseT_Half | \
+                 SUPPORTED_1000baseT_Full)
+
+#define MII_READ_COMMAND                0x00000001
+
+#define MII_INTERRUPT_DISABLED          0x0
+#define MII_INTERRUPT_ENABLED           0x1
+/* Taken from mii_if_info and sungem_phy.h */
+struct ugeth_mii_info {
+	/* Information about the PHY type */
+	/* And management functions */
+	struct phy_info *phyinfo;
+
+	ucc_mii_mng_t *mii_regs;
+
+	/* forced speed & duplex (no autoneg)
+	 * partner speed & duplex & pause (autoneg)
+	 */
+	int speed;
+	int duplex;
+	int pause;
+
+	/* The most recently read link state */
+	int link;
+
+	/* Enabled Interrupts */
+	u32 interrupts;
+
+	u32 advertising;
+	int autoneg;
+	int mii_id;
+
+	/* private data pointer */
+	/* For use by PHYs to maintain extra state */
+	void *priv;
+
+	/* Provided by host chip */
+	struct net_device *dev;
+
+	/* A lock to ensure that only one thing can read/write
+	 * the MDIO bus at a time */
+	spinlock_t mdio_lock;
+
+	/* Provided by ethernet driver */
+	int (*mdio_read) (struct net_device * dev, int mii_id, int reg);
+	void (*mdio_write) (struct net_device * dev, int mii_id, int reg,
+			    int val);
+};
+
+/* struct phy_info: a structure which defines attributes for a PHY
+ *
+ * id will contain a number which represents the PHY.  During
+ * startup, the driver will poll the PHY to find out what its
+ * UID--as defined by registers 2 and 3--is.  The 32-bit result
+ * gotten from the PHY will be ANDed with phy_id_mask to
+ * discard any bits which may change based on revision numbers
+ * unimportant to functionality
+ *
+ * There are 6 commands which take a ugeth_mii_info structure.
+ * Each PHY must declare config_aneg, and read_status.
+ */
+struct phy_info {
+	u32 phy_id;
+	char *name;
+	unsigned int phy_id_mask;
+	u32 features;
+
+	/* Called to initialize the PHY */
+	int (*init) (struct ugeth_mii_info * mii_info);
+
+	/* Called to suspend the PHY for power */
+	int (*suspend) (struct ugeth_mii_info * mii_info);
+
+	/* Reconfigures autonegotiation (or disables it) */
+	int (*config_aneg) (struct ugeth_mii_info * mii_info);
+
+	/* Determines the negotiated speed and duplex */
+	int (*read_status) (struct ugeth_mii_info * mii_info);
+
+	/* Clears any pending interrupts */
+	int (*ack_interrupt) (struct ugeth_mii_info * mii_info);
+
+	/* Enables or disables interrupts */
+	int (*config_intr) (struct ugeth_mii_info * mii_info);
+
+	/* Clears up any memory if needed */
+	void (*close) (struct ugeth_mii_info * mii_info);
+};
+
+struct phy_info *get_phy_info(struct ugeth_mii_info *mii_info);
+void write_phy_reg(struct net_device *dev, int mii_id, int regnum, int value);
+int read_phy_reg(struct net_device *dev, int mii_id, int regnum);
+void mii_clear_phy_interrupt(struct ugeth_mii_info *mii_info);
+void mii_configure_phy_interrupt(struct ugeth_mii_info *mii_info,
+				 u32 interrupts);
+
+struct dm9161_private {
+	struct timer_list timer;
+	int resetdone;
+};
+
+#endif				/* __UCC_GETH_PHY_H__ */