Merge branch 'at91'

Joachim Eastwood says;

====================
This patch series prepares the old at91_ether driver for code sharing
with the macb driver. The hardware is similar except for DMA TX/RX, so
its not quite clear if it is practical to support both in one
driver. But stuff like MDIO and statistics should be possible to
share.

Patch 1 adds some register defines and bits that is only found on
RM9200.

Patch 2-4 uses the register defines and access functions from the macb
header. These can be squashed if it cause too much churn.

Patch 5 merges the private at91_ether struct with the private macb
struct. This makes it easier to later share code with the macb. The
private macb struct becomes quite large, but most at91_ether specific
members are removed in later patches.

Patch 8 make macb compile when we select at91_ether. Is this approach
okey?

Patch 9 makes use of MDIO code from macb. This rips out the private
phy handling code in at91_ether. One thing that is lost is the
interrupt support for phy. But this should easy to add to macb which
will then benefit both drivers.

Patch 10 makes use of the macb_set_rx_mode from macb.

Patch 11-12 makes at91_ether share the rx dma struct members from
macb. Patch also moves the rx buffer allocation into netdev open and
dealloc into netdev close.

Last patch remove the now unused rm9200 emac header from include/mach.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/arm/mach-at91/include/mach/at91rm9200_emac.h

@@ -1,138 +0,0 @@
-/*
- * arch/arm/mach-at91/include/mach/at91rm9200_emac.h
- *
- * Copyright (C) 2005 Ivan Kokshaysky
- * Copyright (C) SAN People
- *
- * Ethernet MAC registers.
- * Based on AT91RM9200 datasheet revision E.
- *
- * 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 AT91RM9200_EMAC_H
-#define AT91RM9200_EMAC_H
-
-#define	AT91_EMAC_CTL		0x00	/* Control Register */
-#define		AT91_EMAC_LB		(1 <<  0)	/* Loopback */
-#define		AT91_EMAC_LBL		(1 <<  1)	/* Loopback Local */
-#define		AT91_EMAC_RE		(1 <<  2)	/* Receive Enable */
-#define		AT91_EMAC_TE		(1 <<  3)	/* Transmit Enable */
-#define		AT91_EMAC_MPE		(1 <<  4)	/* Management Port Enable */
-#define		AT91_EMAC_CSR		(1 <<  5)	/* Clear Statistics Registers */
-#define		AT91_EMAC_INCSTAT	(1 <<  6)	/* Increment Statistics Registers */
-#define		AT91_EMAC_WES		(1 <<  7)	/* Write Enable for Statistics Registers */
-#define		AT91_EMAC_BP		(1 <<  8)	/* Back Pressure */
-
-#define	AT91_EMAC_CFG		0x04	/* Configuration Register */
-#define		AT91_EMAC_SPD		(1 <<  0)	/* Speed */
-#define		AT91_EMAC_FD		(1 <<  1)	/* Full Duplex */
-#define		AT91_EMAC_BR		(1 <<  2)	/* Bit Rate */
-#define		AT91_EMAC_CAF		(1 <<  4)	/* Copy All Frames */
-#define		AT91_EMAC_NBC		(1 <<  5)	/* No Broadcast */
-#define		AT91_EMAC_MTI		(1 <<  6)	/* Multicast Hash Enable */
-#define		AT91_EMAC_UNI		(1 <<  7)	/* Unicast Hash Enable */
-#define		AT91_EMAC_BIG		(1 <<  8)	/* Receive 1522 Bytes */
-#define		AT91_EMAC_EAE		(1 <<  9)	/* External Address Match Enable */
-#define		AT91_EMAC_CLK		(3 << 10)	/* MDC Clock Divisor */
-#define		AT91_EMAC_CLK_DIV8		(0 << 10)
-#define		AT91_EMAC_CLK_DIV16		(1 << 10)
-#define		AT91_EMAC_CLK_DIV32		(2 << 10)
-#define		AT91_EMAC_CLK_DIV64		(3 << 10)
-#define		AT91_EMAC_RTY		(1 << 12)	/* Retry Test */
-#define		AT91_EMAC_RMII		(1 << 13)	/* Reduce MII (RMII) */
-
-#define	AT91_EMAC_SR		0x08	/* Status Register */
-#define		AT91_EMAC_SR_LINK	(1 <<  0)	/* Link */
-#define		AT91_EMAC_SR_MDIO	(1 <<  1)	/* MDIO pin */
-#define		AT91_EMAC_SR_IDLE	(1 <<  2)	/* PHY idle */
-
-#define	AT91_EMAC_TAR		0x0c	/* Transmit Address Register */
-
-#define	AT91_EMAC_TCR		0x10	/* Transmit Control Register */
-#define		AT91_EMAC_LEN		(0x7ff << 0)	/* Transmit Frame Length */
-#define		AT91_EMAC_NCRC		(1     << 15)	/* No CRC */
-
-#define	AT91_EMAC_TSR		0x14	/* Transmit Status Register */
-#define		AT91_EMAC_TSR_OVR	(1 <<  0)	/* Transmit Buffer Overrun */
-#define		AT91_EMAC_TSR_COL	(1 <<  1)	/* Collision Occurred */
-#define		AT91_EMAC_TSR_RLE	(1 <<  2)	/* Retry Limit Exceeded */
-#define		AT91_EMAC_TSR_IDLE	(1 <<  3)	/* Transmitter Idle */
-#define		AT91_EMAC_TSR_BNQ	(1 <<  4)	/* Transmit Buffer not Queued */
-#define		AT91_EMAC_TSR_COMP	(1 <<  5)	/* Transmit Complete */
-#define		AT91_EMAC_TSR_UND	(1 <<  6)	/* Transmit Underrun */
-
-#define	AT91_EMAC_RBQP		0x18	/* Receive Buffer Queue Pointer */
-
-#define	AT91_EMAC_RSR		0x20	/* Receive Status Register */
-#define		AT91_EMAC_RSR_BNA	(1 <<  0)	/* Buffer Not Available */
-#define		AT91_EMAC_RSR_REC	(1 <<  1)	/* Frame Received */
-#define		AT91_EMAC_RSR_OVR	(1 <<  2)	/* RX Overrun */
-
-#define	AT91_EMAC_ISR		0x24	/* Interrupt Status Register */
-#define		AT91_EMAC_DONE		(1 <<  0)	/* Management Done */
-#define		AT91_EMAC_RCOM		(1 <<  1)	/* Receive Complete */
-#define		AT91_EMAC_RBNA		(1 <<  2)	/* Receive Buffer Not Available */
-#define		AT91_EMAC_TOVR		(1 <<  3)	/* Transmit Buffer Overrun */
-#define		AT91_EMAC_TUND		(1 <<  4)	/* Transmit Buffer Underrun */
-#define		AT91_EMAC_RTRY		(1 <<  5)	/* Retry Limit */
-#define		AT91_EMAC_TBRE		(1 <<  6)	/* Transmit Buffer Register Empty */
-#define		AT91_EMAC_TCOM		(1 <<  7)	/* Transmit Complete */
-#define		AT91_EMAC_TIDLE		(1 <<  8)	/* Transmit Idle */
-#define		AT91_EMAC_LINK		(1 <<  9)	/* Link */
-#define		AT91_EMAC_ROVR		(1 << 10)	/* RX Overrun */
-#define		AT91_EMAC_ABT		(1 << 11)	/* Abort */
-
-#define	AT91_EMAC_IER		0x28	/* Interrupt Enable Register */
-#define	AT91_EMAC_IDR		0x2c	/* Interrupt Disable Register */
-#define	AT91_EMAC_IMR		0x30	/* Interrupt Mask Register */
-
-#define	AT91_EMAC_MAN		0x34	/* PHY Maintenance Register */
-#define		AT91_EMAC_DATA		(0xffff << 0)	/* MDIO Data */
-#define		AT91_EMAC_REGA		(0x1f	<< 18)	/* MDIO Register */
-#define		AT91_EMAC_PHYA		(0x1f	<< 23)	/* MDIO PHY Address */
-#define		AT91_EMAC_RW		(3	<< 28)	/* Read/Write operation */
-#define			AT91_EMAC_RW_W		(1 << 28)
-#define			AT91_EMAC_RW_R		(2 << 28)
-#define		AT91_EMAC_MAN_802_3	0x40020000	/* IEEE 802.3 value */
-
-/*
- * Statistics Registers.
- */
-#define AT91_EMAC_FRA		0x40	/* Frames Transmitted OK */
-#define AT91_EMAC_SCOL		0x44	/* Single Collision Frame */
-#define AT91_EMAC_MCOL		0x48	/* Multiple Collision Frame */
-#define AT91_EMAC_OK		0x4c	/* Frames Received OK */
-#define AT91_EMAC_SEQE		0x50	/* Frame Check Sequence Error */
-#define AT91_EMAC_ALE		0x54	/* Alignmemt Error */
-#define AT91_EMAC_DTE		0x58	/* Deffered Transmission Frame */
-#define AT91_EMAC_LCOL		0x5c	/* Late Collision */
-#define AT91_EMAC_ECOL		0x60	/* Excessive Collision */
-#define AT91_EMAC_TUE		0x64	/* Transmit Underrun Error */
-#define AT91_EMAC_CSE		0x68	/* Carrier Sense Error */
-#define AT91_EMAC_DRFC		0x6c	/* Discard RX Frame */
-#define AT91_EMAC_ROV		0x70	/* Receive Overrun */
-#define AT91_EMAC_CDE		0x74	/* Code Error */
-#define AT91_EMAC_ELR		0x78	/* Excessive Length Error */
-#define AT91_EMAC_RJB		0x7c	/* Receive Jabber */
-#define AT91_EMAC_USF		0x80	/* Undersize Frame */
-#define AT91_EMAC_SQEE		0x84	/* SQE Test Error */
-
-/*
- * Address Registers.
- */
-#define AT91_EMAC_HSL		0x90	/* Hash Address Low [31:0] */
-#define AT91_EMAC_HSH		0x94	/* Hash Address High [63:32] */
-#define AT91_EMAC_SA1L		0x98	/* Specific Address 1 Low, bytes 0-3 */
-#define AT91_EMAC_SA1H		0x9c	/* Specific Address 1 High, bytes 4-5 */
-#define AT91_EMAC_SA2L		0xa0	/* Specific Address 2 Low, bytes 0-3 */
-#define AT91_EMAC_SA2H		0xa4	/* Specific Address 2 High, bytes 4-5 */
-#define AT91_EMAC_SA3L		0xa8	/* Specific Address 3 Low, bytes 0-3 */
-#define AT91_EMAC_SA3H		0xac	/* Specific Address 3 High, bytes 4-5 */
-#define AT91_EMAC_SA4L		0xb0	/* Specific Address 4 Low, bytes 0-3 */
-#define AT91_EMAC_SA4H		0xb4	/* Specific Address 4 High, bytes 4-5 */
-
-#endif

drivers/net/ethernet/cadence/Kconfig

@@ -27,7 +27,7 @@ config ARM_AT91_ETHER
 	tristate "AT91RM9200 Ethernet support"
 	depends on ARM && ARCH_AT91RM9200
 	select NET_CORE
-	select MII
+	select PHYLIB
 	---help---
 	  If you wish to compile a kernel for the AT91RM9200 and enable
 	  ethernet support, then you should always answer Y to this.

drivers/net/ethernet/cadence/Makefile

@@ -2,5 +2,5 @@
 # Makefile for the Atmel network device drivers.
 #
 
-obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o
+obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o macb.o
 obj-$(CONFIG_MACB) += macb.o

drivers/net/ethernet/cadence/at91_ether.h

@@ -1,112 +0,0 @@
-/*
- * Ethernet driver for the Atmel AT91RM9200 (Thunder)
- *
- *  Copyright (C) SAN People (Pty) Ltd
- *
- * Based on an earlier Atmel EMAC macrocell driver by Atmel and Lineo Inc.
- * Initial version by Rick Bronson.
- *
- * 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 AT91_ETHERNET
-#define AT91_ETHERNET
-
-
-/* Davicom 9161 PHY */
-#define MII_DM9161_ID		0x0181b880
-#define MII_DM9161A_ID		0x0181b8a0
-#define MII_DSCR_REG		16
-#define MII_DSCSR_REG		17
-#define MII_DSINTR_REG		21
-
-/* Intel LXT971A PHY */
-#define MII_LXT971A_ID		0x001378E0
-#define MII_ISINTE_REG		18
-#define MII_ISINTS_REG		19
-#define MII_LEDCTRL_REG		20
-
-/* Realtek RTL8201 PHY */
-#define MII_RTL8201_ID		0x00008200
-
-/* Broadcom BCM5221 PHY */
-#define MII_BCM5221_ID		0x004061e0
-#define MII_BCMINTR_REG		26
-
-/* National Semiconductor DP83847 */
-#define MII_DP83847_ID		0x20005c30
-
-/* National Semiconductor DP83848 */
-#define MII_DP83848_ID		0x20005c90
-#define MII_DPPHYSTS_REG	16
-#define MII_DPMICR_REG		17
-#define MII_DPMISR_REG		18
-
-/* Altima AC101L PHY */
-#define MII_AC101L_ID		0x00225520
-
-/* Micrel KS8721 PHY */
-#define MII_KS8721_ID		0x00221610
-
-/* Teridian 78Q2123/78Q2133 */
-#define MII_T78Q21x3_ID		0x000e7230
-#define MII_T78Q21INT_REG	17
-
-/* SMSC LAN83C185 */
-#define MII_LAN83C185_ID	0x0007C0A0
-
-/* ........................................................................ */
-
-#define MAX_RBUFF_SZ	0x600		/* 1518 rounded up */
-#define MAX_RX_DESCR	9		/* max number of receive buffers */
-
-#define EMAC_DESC_DONE	0x00000001	/* bit for if DMA is done */
-#define EMAC_DESC_WRAP	0x00000002	/* bit for wrap */
-
-#define EMAC_BROADCAST	0x80000000	/* broadcast address */
-#define EMAC_MULTICAST	0x40000000	/* multicast address */
-#define EMAC_UNICAST	0x20000000	/* unicast address */
-
-struct rbf_t
-{
-	unsigned int addr;
-	unsigned long size;
-};
-
-struct recv_desc_bufs
-{
-	struct rbf_t descriptors[MAX_RX_DESCR];		/* must be on sizeof (rbf_t) boundary */
-	char recv_buf[MAX_RX_DESCR][MAX_RBUFF_SZ];	/* must be on long boundary */
-};
-
-struct at91_private
-{
-	struct mii_if_info mii;			/* ethtool support */
-	struct macb_platform_data board_data;	/* board-specific
-						 * configuration (shared with
-						 * macb for common data */
-	void __iomem *emac_base;		/* base register address */
-	struct clk *ether_clk;			/* clock */
-
-	/* PHY */
-	unsigned long phy_type;			/* type of PHY (PHY_ID) */
-	spinlock_t lock;			/* lock for MDI interface */
-	short phy_media;			/* media interface type */
-	unsigned short phy_address;		/* 5-bit MDI address of PHY (0..31) */
-	struct timer_list check_timer;		/* Poll link status */
-
-	/* Transmit */
-	struct sk_buff *skb;			/* holds skb until xmit interrupt completes */
-	dma_addr_t skb_physaddr;		/* phys addr from pci_map_single */
-	int skb_length;				/* saved skb length for pci_unmap_single */
-
-	/* Receive */
-	int rxBuffIndex;			/* index into receive descriptor list */
-	struct recv_desc_bufs *dlist;		/* descriptor list address */
-	struct recv_desc_bufs *dlist_phys;	/* descriptor list physical address */
-};
-
-#endif

drivers/net/ethernet/cadence/macb.c

@@ -228,7 +228,7 @@ static int macb_mii_probe(struct net_device *dev)
 	return 0;
 }
 
-static int macb_mii_init(struct macb *bp)
+int macb_mii_init(struct macb *bp)
 {
 	struct macb_platform_data *pdata;
 	int err = -ENXIO, i;
@@ -284,6 +284,7 @@ err_out_free_mdiobus:
 err_out:
 	return err;
 }
+EXPORT_SYMBOL_GPL(macb_mii_init);
 
 static void macb_update_stats(struct macb *bp)
 {
@@ -996,7 +997,7 @@ static void macb_sethashtable(struct net_device *dev)
 /*
  * Enable/Disable promiscuous and multicast modes.
  */
-static void macb_set_rx_mode(struct net_device *dev)
+void macb_set_rx_mode(struct net_device *dev)
 {
 	unsigned long cfg;
 	struct macb *bp = netdev_priv(dev);
@@ -1028,6 +1029,7 @@ static void macb_set_rx_mode(struct net_device *dev)
 
 	macb_writel(bp, NCFGR, cfg);
 }
+EXPORT_SYMBOL_GPL(macb_set_rx_mode);
 
 static int macb_open(struct net_device *dev)
 {
@@ -1214,15 +1216,16 @@ static void macb_get_drvinfo(struct net_device *dev,
 	strcpy(info->bus_info, dev_name(&bp->pdev->dev));
 }
 
-static const struct ethtool_ops macb_ethtool_ops = {
+const struct ethtool_ops macb_ethtool_ops = {
 	.get_settings		= macb_get_settings,
 	.set_settings		= macb_set_settings,
 	.get_drvinfo		= macb_get_drvinfo,
 	.get_link		= ethtool_op_get_link,
 	.get_ts_info		= ethtool_op_get_ts_info,
 };
+EXPORT_SYMBOL_GPL(macb_ethtool_ops);
 
-static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 {
 	struct macb *bp = netdev_priv(dev);
 	struct phy_device *phydev = bp->phy_dev;
@@ -1235,6 +1238,7 @@ static int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 
 	return phy_mii_ioctl(phydev, rq, cmd);
 }
+EXPORT_SYMBOL_GPL(macb_ioctl);
 
 static const struct net_device_ops macb_netdev_ops = {
 	.ndo_open		= macb_open,

drivers/net/ethernet/cadence/macb.h

@@ -14,6 +14,8 @@
 #define MACB_NCR				0x0000
 #define MACB_NCFGR				0x0004
 #define MACB_NSR				0x0008
+#define MACB_TAR				0x000c /* AT91RM9200 only */
+#define MACB_TCR				0x0010 /* AT91RM9200 only */
 #define MACB_TSR				0x0014
 #define MACB_RBQP				0x0018
 #define MACB_TBQP				0x001c
@@ -133,6 +135,8 @@
 #define MACB_RTY_SIZE				1
 #define MACB_PAE_OFFSET				13
 #define MACB_PAE_SIZE				1
+#define MACB_RM9200_RMII_OFFSET			13 /* AT91RM9200 only */
+#define MACB_RM9200_RMII_SIZE			1  /* AT91RM9200 only */
 #define MACB_RBOF_OFFSET			14
 #define MACB_RBOF_SIZE				2
 #define MACB_RLCE_OFFSET			16
@@ -178,6 +182,8 @@
 #define MACB_TGO_SIZE				1
 #define MACB_BEX_OFFSET				4
 #define MACB_BEX_SIZE				1
+#define MACB_RM9200_BNQ_OFFSET			4 /* AT91RM9200 only */
+#define MACB_RM9200_BNQ_SIZE			1 /* AT91RM9200 only */
 #define MACB_COMP_OFFSET			5
 #define MACB_COMP_SIZE				1
 #define MACB_UND_OFFSET				6
@@ -534,8 +540,24 @@ struct macb {
 	unsigned int 		duplex;
 
 	phy_interface_t		phy_interface;
+
+	/* at91_private */
+	struct macb_platform_data board_data;	/* board-specific
+						 * configuration (shared with
+						 * macb for common data */
+
+	/* Transmit */
+	struct sk_buff *skb;			/* holds skb until xmit interrupt completes */
+	dma_addr_t skb_physaddr;		/* phys addr from pci_map_single */
+	int skb_length;				/* saved skb length for pci_unmap_single */
 };
 
+extern const struct ethtool_ops macb_ethtool_ops;
+
+int macb_mii_init(struct macb *bp);
+int macb_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+void macb_set_rx_mode(struct net_device *dev);
+
 static inline bool macb_is_gem(struct macb *bp)
 {
 	return MACB_BFEXT(IDNUM, macb_readl(bp, MID)) == 0x2;