add ethernet driver for ap60/61

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@3072 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 2160 insertions, 0 deletions

diff --git a/openwrt/target/linux/aruba-2.6/patches/010-ar2313_enet.patch b/openwrt/target/linux/aruba-2.6/patches/010-ar2313_enet.patch
new file mode 100644
index 0000000000..01fe26fac5
--- /dev/null
+++ b/openwrt/target/linux/aruba-2.6/patches/010-ar2313_enet.patch
@@ -0,0 +1,2160 @@
+diff -urN linux.old/drivers/net/Kconfig linux.net/drivers/net/Kconfig
+--- linux.old/drivers/net/Kconfig	2006-01-21 20:15:08.279272000 +0100
++++ linux.net/drivers/net/Kconfig	2006-01-30 01:18:34.910315000 +0100
+@@ -176,6 +176,13 @@
+ 
+ source "drivers/net/arm/Kconfig"
+ 
++
++config AR2313
++		tristate "AR2313 Ethernet support"
++		depends on NET_ETHERNET && MACH_ARUBA
++		help
++		Support for the AR2313 Ethernet part on Aruba AP60/61
++
+ config IDT_RC32434_ETH
+         tristate "IDT RC32434 Local Ethernet support"
+         depends on NET_ETHERNET
+diff -urN linux.old/drivers/net/Makefile linux.net/drivers/net/Makefile
+--- linux.old/drivers/net/Makefile	2006-01-21 20:15:08.383226000 +0100
++++ linux.net/drivers/net/Makefile	2006-01-30 01:18:34.914315250 +0100
+@@ -35,6 +35,7 @@
+ 
+ obj-$(CONFIG_OAKNET) += oaknet.o 8390.o
+ 
++obj-$(CONFIG_AR2313) += ar2313.o
+ obj-$(CONFIG_IDT_RC32434_ETH) += rc32434_eth.o
+ obj-$(CONFIG_DGRS) += dgrs.o
+ obj-$(CONFIG_VORTEX) += 3c59x.o
+diff -urN linux.old/drivers/net/ar2313/ar2313.h linux.net/drivers/net/ar2313/ar2313.h
+--- linux.old/drivers/net/ar2313/ar2313.h	1970-01-01 01:00:00.000000000 +0100
++++ linux.net/drivers/net/ar2313/ar2313.h	2006-01-25 00:35:55.000000000 +0100
+@@ -0,0 +1,190 @@
++#ifndef _AR2313_H_
++#define _AR2313_H_
++
++#include <linux/config.h>
++#include <asm/bootinfo.h>
++#include "platform.h"
++
++extern unsigned long mips_machtype;
++
++#undef ETHERNET_BASE
++#define ETHERNET_BASE ar_eth_base
++#define ETHERNET_SIZE 0x00100000
++#define ETHERNET_MACS 2
++
++#undef DMA_BASE
++#define DMA_BASE      ar_dma_base
++#define DMA_SIZE      0x00100000
++
++
++/*
++ * probe link timer - 5 secs
++ */
++#define LINK_TIMER    (5*HZ) 
++
++/*
++ * Interrupt register base address
++ */
++#define INTERRUPT_BASE    PHYS_TO_K1(ar_int_base)
++
++/*
++ * Reset Register
++ */
++#define AR531X_RESET    (AR531X_RESETTMR + 0x0020)
++#define RESET_SYSTEM         0x00000001      /* cold reset full system */
++#define RESET_PROC           0x00000002      /* cold reset MIPS core */
++#define RESET_WLAN0          0x00000004      /* cold reset WLAN MAC and BB */
++#define RESET_EPHY0          0x00000008      /* cold reset ENET0 phy */
++#define RESET_EPHY1          0x00000010      /* cold reset ENET1 phy */
++#define RESET_ENET0          0x00000020      /* cold reset ENET0 mac */
++#define RESET_ENET1          0x00000040      /* cold reset ENET1 mac */
++
++#define IS_DMA_TX_INT(X)   (((X) & (DMA_STATUS_TI)) != 0)
++#define IS_DMA_RX_INT(X)   (((X) & (DMA_STATUS_RI)) != 0)
++#define IS_DRIVER_OWNED(X) (((X) & (DMA_TX_OWN))    == 0)
++
++#ifndef K1_TO_PHYS
++// hack
++#define K1_TO_PHYS(x)   (((unsigned int)(x)) & 0x1FFFFFFF)        /* kseg1 to physical */
++#endif
++
++#ifndef PHYS_TO_K1
++// hack
++#define  PHYS_TO_K1(x)   (((unsigned int)(x)) | 0xA0000000)   /* physical to kseg1 */
++#endif
++
++#define AR2313_TX_TIMEOUT (HZ/4)
++
++/*
++ * Rings
++ */
++#define DSC_RING_ENTRIES_SIZE	(AR2313_DESCR_ENTRIES * sizeof(struct desc))
++#define DSC_NEXT(idx)	        ((idx + 1) & (AR2313_DESCR_ENTRIES - 1))
++
++static inline int tx_space (u32 csm, u32 prd)
++{
++	return (csm - prd - 1) & (AR2313_DESCR_ENTRIES - 1);
++}
++
++#if MAX_SKB_FRAGS
++#define TX_RESERVED	(MAX_SKB_FRAGS+1) /* +1 for message header */
++#define tx_ring_full(csm, prd)	(tx_space(csm, prd) <= TX_RESERVED)
++#else
++#define tx_ring_full		0
++#endif
++
++#define AR2313_MBGET		2
++#define AR2313_MBSET    	3
++#define AR2313_PCI_RECONFIG	4
++#define AR2313_PCI_DUMP  	5
++#define AR2313_TEST_PANIC	6
++#define AR2313_TEST_NULLPTR	7
++#define AR2313_READ_DATA	8
++#define AR2313_WRITE_DATA	9
++#define AR2313_GET_VERSION	10
++#define AR2313_TEST_HANG	11
++#define AR2313_SYNC		12
++
++
++struct ar2313_cmd {
++	u32	cmd;
++        u32     address;      /* virtual address of image */
++        u32     length;       /* size of image to download */
++        u32     mailbox;      /* mailbox to get/set */
++        u32     data[2];      /* contents of mailbox to read/write */
++};
++
++
++/*
++ * Struct private for the Sibyte.
++ *
++ * Elements are grouped so variables used by the tx handling goes
++ * together, and will go into the same cache lines etc. in order to
++ * avoid cache line contention between the rx and tx handling on SMP.
++ *
++ * Frequently accessed variables are put at the beginning of the
++ * struct to help the compiler generate better/shorter code.
++ */
++struct ar2313_private
++{
++        int			version;
++        u32                     mb[2];
++	
++	volatile ETHERNET_STRUCT	*eth_regs;
++	volatile DMA			*dma_regs;
++        volatile u32		        *int_regs;
++
++	spinlock_t lock; 	/* Serialise access to device */
++
++        /*
++	 * RX and TX descriptors, must be adjacent
++	 */
++        ar2313_descr_t	        *rx_ring;
++        ar2313_descr_t	        *tx_ring;
++
++
++        struct sk_buff		**rx_skb;
++        struct sk_buff		**tx_skb;
++
++	/*
++	 * RX elements
++	 */
++        u32			rx_skbprd;
++	u32			cur_rx;
++
++	/*
++	 * TX elements
++	 */
++	u32			tx_prd;
++        u32		        tx_csm;
++
++        /*
++	 * Misc elements
++	 */
++	int			board_idx;
++	char			name[48];
++	struct net_device_stats stats;
++        struct {
++	    u32 address;
++	    u32 length;
++	    char *mapping;
++	} desc;
++
++
++	struct timer_list link_timer;
++	unsigned short phy;  /* merlot phy = 1,  samsung phy = 0x1f */
++        unsigned short mac;
++	unsigned short link; /* 0 - link down,  1 - link up */
++        u16 phyData;
++
++	struct tasklet_struct rx_tasklet;
++	int unloading;
++};
++
++
++/*
++ * Prototypes
++ */
++static int  ar2313_init(struct net_device *dev);
++#ifdef TX_TIMEOUT
++static void ar2313_tx_timeout(struct net_device *dev);
++#endif
++#if 0
++static void ar2313_multicast_list(struct net_device *dev);
++#endif
++static int ar2313_restart(struct net_device *dev);
++#if DEBUG
++static void  ar2313_dump_regs(struct net_device *dev);
++#endif
++static void ar2313_load_rx_ring(struct net_device *dev, int bufs);
++static irqreturn_t ar2313_interrupt(int irq, void *dev_id, struct pt_regs *regs);
++static int  ar2313_open(struct net_device *dev);
++static int  ar2313_start_xmit(struct sk_buff *skb, struct net_device *dev);
++static int  ar2313_close(struct net_device *dev);
++static int  ar2313_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
++static void ar2313_init_cleanup(struct net_device *dev);
++static int  ar2313_setup_timer(struct net_device *dev);
++static void ar2313_link_timer_fn(unsigned long data);
++static void ar2313_check_link(struct net_device *dev);
++static struct net_device_stats *ar2313_get_stats(struct net_device *dev);
++#endif /* _AR2313_H_ */
+diff -urN linux.old/drivers/net/ar2313/ar2313_msg.h linux.net/drivers/net/ar2313/ar2313_msg.h
+--- linux.old/drivers/net/ar2313/ar2313_msg.h	1970-01-01 01:00:00.000000000 +0100
++++ linux.net/drivers/net/ar2313/ar2313_msg.h	2006-01-24 22:57:25.000000000 +0100
+@@ -0,0 +1,17 @@
++#ifndef _AR2313_MSG_H_
++#define _AR2313_MSG_H_
++
++#define AR2313_MTU                     1692
++#define AR2313_PRIOS                   1
++#define AR2313_QUEUES                  (2*AR2313_PRIOS)
++
++#define AR2313_DESCR_ENTRIES           64
++
++typedef struct {
++    volatile unsigned int	status;		// OWN, Device control and status.
++    volatile unsigned int	devcs;		// pkt Control bits + Length
++    volatile unsigned int	addr;		// Current Address.
++    volatile unsigned int	descr;		// Next descriptor in chain.
++} ar2313_descr_t;
++
++#endif /* _AR2313_MSG_H_ */
+diff -urN linux.old/drivers/net/ar2313/dma.h linux.net/drivers/net/ar2313/dma.h
+--- linux.old/drivers/net/ar2313/dma.h	1970-01-01 01:00:00.000000000 +0100
++++ linux.net/drivers/net/ar2313/dma.h	2006-01-24 22:58:45.000000000 +0100
+@@ -0,0 +1,135 @@
++#ifndef __ARUBA_DMA_H__
++#define __ARUBA_DMA_H__
++
++/*******************************************************************************
++ *
++ * Copyright 2002 Integrated Device Technology, Inc.
++ *		All rights reserved.
++ *
++ * DMA register definition.
++ *
++ * File   : $Id: dma.h,v 1.3 2002/06/06 18:34:03 astichte Exp $
++ *
++ * Author : ryan.holmQVist@idt.com
++ * Date   : 20011005
++ * Update :
++ *	    $Log: dma.h,v $
++ *	    Revision 1.3  2002/06/06 18:34:03  astichte
++ *	    Added XXX_PhysicalAddress and XXX_VirtualAddress
++ *	
++ *	    Revision 1.2  2002/06/05 18:30:46  astichte
++ *	    Removed IDTField
++ *	
++ *	    Revision 1.1  2002/05/29 17:33:21  sysarch
++ *	    jba File moved from vcode/include/idt/acacia
++ *	
++ *
++ ******************************************************************************/
++
++#define AR_BIT(x)            (1 << (x))
++#define DMA_RX_ERR_CRC       AR_BIT(1)
++#define DMA_RX_ERR_DRIB      AR_BIT(2)
++#define DMA_RX_ERR_MII       AR_BIT(3)
++#define DMA_RX_EV2           AR_BIT(5)
++#define DMA_RX_ERR_COL       AR_BIT(6)
++#define DMA_RX_LONG          AR_BIT(7)
++#define DMA_RX_LS            AR_BIT(8)  /* last descriptor */
++#define DMA_RX_FS            AR_BIT(9)  /* first descriptor */
++#define DMA_RX_MF            AR_BIT(10) /* multicast frame */
++#define DMA_RX_ERR_RUNT      AR_BIT(11) /* runt frame */
++#define DMA_RX_ERR_LENGTH    AR_BIT(12) /* length error */
++#define DMA_RX_ERR_DESC      AR_BIT(14) /* descriptor error */
++#define DMA_RX_ERROR         AR_BIT(15) /* error summary */
++#define DMA_RX_LEN_MASK      0x3fff0000
++#define DMA_RX_LEN_SHIFT     16
++#define DMA_RX_FILT          AR_BIT(30)
++#define DMA_RX_OWN           AR_BIT(31) /* desc owned by DMA controller */
++
++#define DMA_RX1_BSIZE_MASK   0x000007ff
++#define DMA_RX1_BSIZE_SHIFT  0
++#define DMA_RX1_CHAINED      AR_BIT(24)
++#define DMA_RX1_RER          AR_BIT(25)
++
++#define DMA_TX_ERR_UNDER     AR_BIT(1)  /* underflow error */
++#define DMA_TX_ERR_DEFER     AR_BIT(2)  /* excessive deferral */
++#define DMA_TX_COL_MASK      0x78
++#define DMA_TX_COL_SHIFT     3
++#define DMA_TX_ERR_HB        AR_BIT(7)  /* hearbeat failure */
++#define DMA_TX_ERR_COL       AR_BIT(8)  /* excessive collisions */
++#define DMA_TX_ERR_LATE      AR_BIT(9)  /* late collision */
++#define DMA_TX_ERR_LINK      AR_BIT(10) /* no carrier */
++#define DMA_TX_ERR_LOSS      AR_BIT(11) /* loss of carrier */
++#define DMA_TX_ERR_JABBER    AR_BIT(14) /* transmit jabber timeout */
++#define DMA_TX_ERROR         AR_BIT(15) /* frame aborted */
++#define DMA_TX_OWN           AR_BIT(31) /* descr owned by DMA controller */
++
++#define DMA_TX1_BSIZE_MASK   0x000007ff
++#define DMA_TX1_BSIZE_SHIFT  0
++#define DMA_TX1_CHAINED      AR_BIT(24) /* chained descriptors */
++#define DMA_TX1_TER          AR_BIT(25) /* transmit end of ring */
++#define DMA_TX1_FS           AR_BIT(29) /* first segment */
++#define DMA_TX1_LS           AR_BIT(30) /* last segment */
++#define DMA_TX1_IC           AR_BIT(31) /* interrupt on completion */
++
++#define RCVPKT_LENGTH(X)     (X  >> 16)               /* Received pkt Length  */
++
++#define MAC_CONTROL_RE       AR_BIT(2)  /* receive enable */
++#define MAC_CONTROL_TE       AR_BIT(3)  /* transmit enable */
++#define MAC_CONTROL_DC       AR_BIT(5)  /* Deferral check*/
++#define MAC_CONTROL_ASTP     AR_BIT(8)  /* Auto pad strip */
++#define MAC_CONTROL_DRTY     AR_BIT(10) /* Disable retry */
++#define MAC_CONTROL_DBF      AR_BIT(11) /* Disable bcast frames */
++#define MAC_CONTROL_LCC      AR_BIT(12) /* late collision ctrl */
++#define MAC_CONTROL_HP       AR_BIT(13) /* Hash Perfect filtering */
++#define MAC_CONTROL_HASH     AR_BIT(14) /* Unicast hash filtering */
++#define MAC_CONTROL_HO       AR_BIT(15) /* Hash only filtering */
++#define MAC_CONTROL_PB       AR_BIT(16) /* Pass Bad frames */
++#define MAC_CONTROL_IF       AR_BIT(17) /* Inverse filtering */
++#define MAC_CONTROL_PR       AR_BIT(18) /* promiscuous mode (valid frames only) */
++#define MAC_CONTROL_PM       AR_BIT(19) /* pass multicast */
++#define MAC_CONTROL_F        AR_BIT(20) /* full-duplex */
++#define MAC_CONTROL_DRO      AR_BIT(23) /* Disable Receive Own */
++#define MAC_CONTROL_HBD      AR_BIT(28) /* heart-beat disabled (MUST BE SET) */
++#define MAC_CONTROL_BLE      AR_BIT(30) /* big endian mode */
++#define MAC_CONTROL_RA       AR_BIT(31) /* receive all (valid and invalid frames) */
++
++#define MII_ADDR_BUSY        AR_BIT(0)
++#define MII_ADDR_WRITE       AR_BIT(1)
++#define MII_ADDR_REG_SHIFT   6
++#define MII_ADDR_PHY_SHIFT   11
++#define MII_DATA_SHIFT       0
++
++#define FLOW_CONTROL_FCE     AR_BIT(1)
++
++#define DMA_BUS_MODE_SWR       AR_BIT(0)  /* software reset */
++#define DMA_BUS_MODE_BLE       AR_BIT(7)  /* big endian mode */
++#define DMA_BUS_MODE_PBL_SHIFT 8          /* programmable burst length 32 */
++#define DMA_BUS_MODE_DBO       AR_BIT(20) /* big-endian descriptors */
++
++#define DMA_STATUS_TI        AR_BIT(0)  /* transmit interrupt */
++#define DMA_STATUS_TPS       AR_BIT(1)  /* transmit process stopped */
++#define DMA_STATUS_TU        AR_BIT(2)  /* transmit buffer unavailable */
++#define DMA_STATUS_TJT       AR_BIT(3)  /* transmit buffer timeout */
++#define DMA_STATUS_UNF       AR_BIT(5)  /* transmit underflow */
++#define DMA_STATUS_RI        AR_BIT(6)  /* receive interrupt */
++#define DMA_STATUS_RU        AR_BIT(7)  /* receive buffer unavailable */
++#define DMA_STATUS_RPS       AR_BIT(8)  /* receive process stopped */
++#define DMA_STATUS_ETI       AR_BIT(10) /* early transmit interrupt */
++#define DMA_STATUS_FBE       AR_BIT(13) /* fatal bus interrupt */
++#define DMA_STATUS_ERI       AR_BIT(14) /* early receive interrupt */
++#define DMA_STATUS_AIS       AR_BIT(15) /* abnormal interrupt summary */
++#define DMA_STATUS_NIS       AR_BIT(16) /* normal interrupt summary */
++#define DMA_STATUS_RS_SHIFT  17         /* receive process state */
++#define DMA_STATUS_TS_SHIFT  20         /* transmit process state */
++#define DMA_STATUS_EB_SHIFT  23         /* error bits */
++
++#define DMA_CONTROL_SR       AR_BIT(1)  /* start receive */
++#define DMA_CONTROL_ST       AR_BIT(13) /* start transmit */
++#define DMA_CONTROL_SF       AR_BIT(21) /* store and forward */
++
++#endif	// __ARUBA_DMA_H__
++
++
++
++
++
+diff -urN linux.old/drivers/net/ar2313/platform.h linux.net/drivers/net/ar2313/platform.h
+--- linux.old/drivers/net/ar2313/platform.h	1970-01-01 01:00:00.000000000 +0100
++++ linux.net/drivers/net/ar2313/platform.h	2006-01-25 00:10:25.000000000 +0100
+@@ -0,0 +1,128 @@
++/********************************************************************************
++   Title:   $Source: platform.h,v $
++
++   Author:  Dan Steinberg
++            Copyright Integrated Device Technology 2001
++
++   Purpose: AR2313 Register/Bit Definitions
++   
++   Update:
++            $Log: platform.h,v $
++      
++   Notes:   See Merlot architecture spec for complete details.  Note, all
++            addresses are virtual addresses in kseg1 (Uncached, Unmapped).
++ 
++********************************************************************************/
++
++#ifndef PLATFORM_H
++#define PLATFORM_H
++
++#define BIT(x) (1 << (x))
++
++#define RESET_BASE        0xBC003020
++#define RESET_VALUE       0x00000001
++
++/********************************************************************
++ * Device controller 
++ ********************************************************************/
++typedef struct {
++  volatile unsigned int flash0;
++} DEVICE;
++
++#define device (*((volatile DEVICE *) DEV_CTL_BASE))
++
++// DDRC register
++#define DEV_WP        (1<<26)
++
++/********************************************************************
++ * DDR controller 
++ ********************************************************************/
++typedef struct {
++  volatile unsigned int ddrc0;
++  volatile unsigned int ddrc1;
++  volatile unsigned int ddrrefresh;
++} DDR;
++
++#define ddr (*((volatile DDR *) DDR_BASE))
++
++// DDRC register
++#define DDRC_CS(i)     ((i&0x3)<<0)
++#define DDRC_WE        (1<<2)
++
++/********************************************************************
++ * Ethernet interfaces
++ ********************************************************************/
++#define ETHERNET_BASE    0xB8200000
++
++//
++// New Combo structure for Both Eth0 AND eth1
++//
++typedef struct {
++  volatile unsigned int mac_control;    /* 0x00 */
++  volatile unsigned int mac_addr[2];    /* 0x04 - 0x08*/
++  volatile unsigned int mcast_table[2]; /* 0x0c - 0x10 */
++  volatile unsigned int mii_addr;       /* 0x14 */
++  volatile unsigned int mii_data;       /* 0x18 */
++  volatile unsigned int flow_control;   /* 0x1c */
++  volatile unsigned int vlan_tag;       /* 0x20 */
++  volatile unsigned int pad[7];         /* 0x24 - 0x3c */
++  volatile unsigned int ucast_table[8]; /* 0x40-0x5c */
++  
++} ETHERNET_STRUCT;
++
++/********************************************************************
++ * Interrupt controller 
++ ********************************************************************/
++
++typedef struct {
++  volatile unsigned int wdog_control;		/* 0x08 */
++  volatile unsigned int wdog_timer;		/* 0x0c */
++  volatile unsigned int misc_status;		/* 0x10 */
++  volatile unsigned int misc_mask;		/* 0x14 */
++  volatile unsigned int global_status;		/* 0x18 */
++  volatile unsigned int reserved;		/* 0x1c */
++  volatile unsigned int reset_control;		/* 0x20 */
++} INTERRUPT;
++
++#define interrupt (*((volatile INTERRUPT *) INTERRUPT_BASE))
++
++#define INTERRUPT_MISC_TIMER    BIT(0)
++#define INTERRUPT_MISC_AHBPROC  BIT(1)
++#define INTERRUPT_MISC_AHBDMA   BIT(2)
++#define INTERRUPT_MISC_GPIO     BIT(3)
++#define INTERRUPT_MISC_UART     BIT(4)
++#define INTERRUPT_MISC_UARTDMA  BIT(5)
++#define INTERRUPT_MISC_WATCHDOG BIT(6)
++#define INTERRUPT_MISC_LOCAL    BIT(7)
++
++#define INTERRUPT_GLOBAL_ETH    BIT(2)
++#define INTERRUPT_GLOBAL_WLAN   BIT(3)
++#define INTERRUPT_GLOBAL_MISC   BIT(4)
++#define INTERRUPT_GLOBAL_ITIMER BIT(5)
++
++/********************************************************************
++ * DMA controller
++ ********************************************************************/
++#define DMA_BASE          0xB8201000
++
++typedef struct {
++  volatile unsigned int bus_mode;        /* 0x00 (CSR0) */
++  volatile unsigned int xmt_poll;        /* 0x04 (CSR1) */
++  volatile unsigned int rcv_poll;        /* 0x08 (CSR2) */
++  volatile unsigned int rcv_base;        /* 0x0c (CSR3) */
++  volatile unsigned int xmt_base;        /* 0x10 (CSR4) */
++  volatile unsigned int status;          /* 0x14 (CSR5) */
++  volatile unsigned int control;         /* 0x18 (CSR6) */
++  volatile unsigned int intr_ena;        /* 0x1c (CSR7) */
++  volatile unsigned int rcv_missed;      /* 0x20 (CSR8) */
++  volatile unsigned int reserved[11];    /* 0x24-0x4c (CSR9-19) */
++  volatile unsigned int cur_tx_buf_addr; /* 0x50 (CSR20) */
++  volatile unsigned int cur_rx_buf_addr; /* 0x50 (CSR21) */
++} DMA;
++
++#define dma (*((volatile DMA *) DMA_BASE))
++
++// macro to convert from virtual to physical address  
++#define phys_addr(x)      (x & 0x1fffffff) 
++
++#endif /* PLATFORM_H */
+diff -urN linux.old/drivers/net/ar2313.c linux.net/drivers/net/ar2313.c
+--- linux.old/drivers/net/ar2313.c	1970-01-01 01:00:00.000000000 +0100
++++ linux.net/drivers/net/ar2313.c	2006-01-30 01:21:56.822933750 +0100
+@@ -0,0 +1,1642 @@
++/*
++ * ar2313.c: Linux driver for the Atheros AR2313 Ethernet device.
++ *
++ * Copyright 2004 by Sameer Dekate, <sdekate@arubanetworks.com>.
++ *
++ * Thanks to Atheros for providing hardware and documentation
++ * enabling me to write this driver.
++ *
++ * 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.
++ *
++ * Additional credits:
++ * 	This code is taken from John Taylor's Sibyte driver and then 
++ * 	modified for the AR2313.
++ */
++
++#include <linux/config.h>
++#include <linux/module.h>
++#include <linux/version.h>
++#include <linux/types.h>
++#include <linux/errno.h>
++#include <linux/ioport.h>
++#include <linux/pci.h>
++#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
++#include <linux/skbuff.h>
++#include <linux/init.h>
++#include <linux/delay.h>
++#include <linux/mm.h>
++#include <linux/highmem.h>
++#include <linux/sockios.h>
++#include <linux/pkt_sched.h>
++#include <linux/compile.h>
++#include <linux/mii.h>
++#include <linux/ethtool.h>
++#include <linux/ctype.h>
++
++#include <net/sock.h>
++#include <net/ip.h>
++
++#include <asm/system.h>
++#include <asm/io.h>
++#include <asm/irq.h>
++#include <asm/byteorder.h>
++#include <asm/uaccess.h>
++#include <asm/bootinfo.h>
++
++extern char *getenv(char *e);
++
++
++#undef INDEX_DEBUG
++#define DEBUG     0
++#define DEBUG_TX  0
++#define DEBUG_RX  0
++#define DEBUG_INT 0
++#define DEBUG_MC  0
++#define DEBUG_ERR 1
++
++#ifndef __exit
++#define __exit
++#endif
++
++#ifndef min
++#define min(a,b)	(((a)<(b))?(a):(b))
++#endif
++
++#ifndef SMP_CACHE_BYTES
++#define SMP_CACHE_BYTES	L1_CACHE_BYTES
++#endif
++
++#ifndef SET_MODULE_OWNER
++#define SET_MODULE_OWNER(dev)		{do{} while(0);}
++#define AR2313_MOD_INC_USE_COUNT	MOD_INC_USE_COUNT
++#define AR2313_MOD_DEC_USE_COUNT	MOD_DEC_USE_COUNT
++#else
++#define AR2313_MOD_INC_USE_COUNT	{do{} while(0);}
++#define AR2313_MOD_DEC_USE_COUNT	{do{} while(0);}
++#endif
++
++#define PHYSADDR(a)		((_ACAST32_ (a)) & 0x1fffffff)
++
++MODULE_PARM(ethaddr, "s");
++static char *ethaddr = "00:00:00:00:00:00";
++MODULE_PARM(ifname, "s");
++static char *ifname = "bond" ;
++
++#define AR2313_MBOX_SET_BIT  0x8
++
++#define BOARD_IDX_STATIC	0
++#define BOARD_IDX_OVERFLOW	-1
++
++/* margot includes */
++#include <asm/idt-boards/rc32434/rc32434.h>
++
++#include "ar2313/ar2313_msg.h"
++#include "ar2313/platform.h"
++#include "ar2313/dma.h"
++#include "ar2313/ar2313.h"
++
++/*
++ * New interrupt handler strategy:
++ *
++ * An old interrupt handler worked using the traditional method of
++ * replacing an skbuff with a new one when a packet arrives. However
++ * the rx rings do not need to contain a static number of buffer
++ * descriptors, thus it makes sense to move the memory allocation out
++ * of the main interrupt handler and do it in a bottom half handler
++ * and only allocate new buffers when the number of buffers in the
++ * ring is below a certain threshold. In order to avoid starving the
++ * NIC under heavy load it is however necessary to force allocation
++ * when hitting a minimum threshold. The strategy for alloction is as
++ * follows:
++ *
++ *     RX_LOW_BUF_THRES    - allocate buffers in the bottom half
++ *     RX_PANIC_LOW_THRES  - we are very low on buffers, allocate
++ *                           the buffers in the interrupt handler
++ *     RX_RING_THRES       - maximum number of buffers in the rx ring
++ *
++ * One advantagous side effect of this allocation approach is that the
++ * entire rx processing can be done without holding any spin lock
++ * since the rx rings and registers are totally independent of the tx
++ * ring and its registers.  This of course includes the kmalloc's of
++ * new skb's. Thus start_xmit can run in parallel with rx processing
++ * and the memory allocation on SMP systems.
++ *
++ * Note that running the skb reallocation in a bottom half opens up
++ * another can of races which needs to be handled properly. In
++ * particular it can happen that the interrupt handler tries to run
++ * the reallocation while the bottom half is either running on another
++ * CPU or was interrupted on the same CPU. To get around this the
++ * driver uses bitops to prevent the reallocation routines from being
++ * reentered.
++ *
++ * TX handling can also be done without holding any spin lock, wheee
++ * this is fun! since tx_csm is only written to by the interrupt
++ * handler.
++ */
++
++/*
++ * Threshold values for RX buffer allocation - the low water marks for
++ * when to start refilling the rings are set to 75% of the ring
++ * sizes. It seems to make sense to refill the rings entirely from the
++ * intrrupt handler once it gets below the panic threshold, that way
++ * we don't risk that the refilling is moved to another CPU when the
++ * one running the interrupt handler just got the slab code hot in its
++ * cache.
++ */
++#define RX_RING_SIZE		AR2313_DESCR_ENTRIES
++#define RX_PANIC_THRES	        (RX_RING_SIZE/4)
++#define RX_LOW_THRES	        ((3*RX_RING_SIZE)/4)
++#define CRC_LEN                 4
++#define RX_OFFSET               2
++
++#define AR2313_BUFSIZE		(AR2313_MTU + ETH_HLEN + CRC_LEN + RX_OFFSET)
++
++#ifdef MODULE
++MODULE_AUTHOR("Sameer Dekate<sdekate@arubanetworks.com>");
++MODULE_DESCRIPTION("AR2313 Ethernet driver");
++#endif
++
++#if DEBUG
++static char version[] __initdata = 
++  "ar2313.c: v0.01 2004/01/06  sdekate@arubanetworks.com\n";
++#endif /* DEBUG */
++
++#define virt_to_phys(x) ((u32)(x) & 0x1fffffff)
++
++// prototypes
++static short armiiread(short phy, short reg);
++static void armiiwrite(short phy, short reg, short data);
++#ifdef TX_TIMEOUT
++static void ar2313_tx_timeout(struct net_device *dev);
++#endif
++static void ar2313_halt(struct net_device *dev);
++static void rx_tasklet_func(unsigned long data);
++static void ar2313_multicast_list(struct net_device *dev);
++
++static struct net_device *root_dev;
++static int probed __initdata = 0;
++static unsigned long ar_eth_base;
++static unsigned long ar_dma_base;
++static unsigned long ar_int_base;
++static unsigned long ar_int_mac_mask;
++static unsigned long ar_int_phy_mask;
++
++#ifndef ERR
++#define ERR(fmt, args...) printk("%s: " fmt, __func__, ##args)
++#endif
++
++static int parse_mac_addr(struct net_device *dev, char* macstr){
++  int i, j;
++  unsigned char result, value;
++  
++  for (i=0; i<6; i++) {
++    result = 0;
++    if (i != 5 && *(macstr+2) != ':') {
++      ERR("invalid mac address format: %d %c\n",
++          i, *(macstr+2));
++      return -EINVAL;
++    }
++    for (j=0; j<2; j++) {
++      if (isxdigit(*macstr) && (value = isdigit(*macstr) ? *macstr-'0' :
++                                toupper(*macstr)-'A'+10) < 16)
++        {
++          result = result*16 + value;
++          macstr++;
++        }
++      else {
++        ERR("invalid mac address "
++            "character: %c\n", *macstr);
++        return -EINVAL;
++      }
++    }
++    
++    macstr++;
++    dev->dev_addr[i] = result;
++  }
++  
++  return 0;
++}
++
++
++int __init ar2313_probe(void)
++{
++    struct net_device *dev;
++    struct ar2313_private *sp;
++    int version_disp;
++    char name[64] ;
++
++    if (probed)
++        return -ENODEV;
++    probed++;
++
++    version_disp = 0;
++    sprintf(name, "%s%%d", ifname) ;
++    dev = alloc_etherdev(sizeof(struct ar2313_private));
++
++    if (dev == NULL) {
++	printk(KERN_ERR "ar2313: Unable to allocate net_device structure!\n");
++	return -ENOMEM;
++    }
++
++    SET_MODULE_OWNER(dev);
++
++    sp = dev->priv;
++
++    sp->link = 0;
++    switch (mips_machtype) {
++    case MACH_ARUBA_AP60:
++        ar_eth_base = 0xb8100000;
++        ar_dma_base = ar_eth_base + 0x1000;
++        ar_int_base = 0x1C003020;
++        ar_int_mac_mask = RESET_ENET0|RESET_ENET1;
++        ar_int_phy_mask = RESET_EPHY0|RESET_EPHY1;
++        sp->mac = 1;
++    	sp->phy = 1;
++        dev->irq = 4;
++        break;
++
++    case MACH_ARUBA_AP40:
++        ar_eth_base = 0xb0500000;
++        ar_dma_base = ar_eth_base + 0x1000;
++        ar_int_base = 0x11000004;
++        ar_int_mac_mask = 0x800;
++        ar_int_phy_mask = 0x400;
++        sp->mac = 0;
++    	sp->phy = 1;
++        dev->irq = 4;
++        break;
++
++    case MACH_ARUBA_AP65:
++        ar_eth_base = 0xb8100000;
++        ar_dma_base = ar_eth_base + 0x1000;
++        ar_int_base = 0x1C003020;
++        ar_int_mac_mask = RESET_ENET0|RESET_ENET1;
++        ar_int_phy_mask = RESET_EPHY0|RESET_EPHY1;
++        sp->mac = 0;
++#if 0
++        // commented out, for now
++
++        if (mips_machtype == MACH_ARUBA_SAMSUNG) {
++            sp->phy = 0x1f;
++        } else {
++            sp->phy = 1;
++        }
++#else
++        sp->phy = 1;
++#endif
++        dev->irq = 3;
++        break;
++
++    default:
++        printk("%s: unsupported mips_machtype=0x%lx\n",
++               __FUNCTION__, mips_machtype) ;
++        return -ENODEV;
++    }
++
++    spin_lock_init(&sp->lock);
++
++    /* initialize func pointers */
++    dev->open = &ar2313_open;
++    dev->stop = &ar2313_close;
++    dev->hard_start_xmit = &ar2313_start_xmit;
++
++    dev->get_stats = &ar2313_get_stats;
++    dev->set_multicast_list = &ar2313_multicast_list;
++#ifdef TX_TIMEOUT
++    dev->tx_timeout = ar2313_tx_timeout;
++    dev->watchdog_timeo = AR2313_TX_TIMEOUT;
++#endif
++    dev->do_ioctl = &ar2313_ioctl;
++
++    // SAMEER: do we need this?
++    dev->features |= NETIF_F_SG | NETIF_F_HIGHDMA;
++
++    tasklet_init(&sp->rx_tasklet, rx_tasklet_func, (unsigned long) dev);
++    tasklet_disable(&sp->rx_tasklet);
++
++    /* display version info if adapter is found */
++    if (!version_disp) {
++        /* set display flag to TRUE so that */
++        /* we only display this string ONCE */
++	version_disp = 1;
++#if DEBUG
++	printk(version);
++#endif /* DEBUG */
++    }
++
++    request_region(PHYSADDR(ETHERNET_BASE), ETHERNET_SIZE*ETHERNET_MACS,
++                   "AR2313ENET");
++
++    sp->eth_regs = ioremap_nocache(PHYSADDR(ETHERNET_BASE + ETHERNET_SIZE*sp->mac),
++                                   sizeof(*sp->eth_regs));
++    if (!sp->eth_regs) {
++	printk("Can't remap eth registers\n");
++	return(-ENXIO);
++    }
++
++    sp->dma_regs = ioremap_nocache(PHYSADDR(DMA_BASE + DMA_SIZE*sp->mac),
++                                   sizeof(*sp->dma_regs));
++    dev->base_addr = (unsigned int) sp->dma_regs;
++    if (!sp->dma_regs) {
++	printk("Can't remap DMA registers\n");
++	return(-ENXIO);
++    }
++
++    sp->int_regs = ioremap_nocache(PHYSADDR(INTERRUPT_BASE),
++                                   sizeof(*sp->int_regs));
++    if (!sp->int_regs) {
++	printk("Can't remap INTERRUPT registers\n");
++	return(-ENXIO);
++    }
++
++    strncpy(sp->name, "Atheros AR2313", sizeof (sp->name) - 1);
++    sp->name [sizeof (sp->name) - 1] = '\0';
++
++    {
++      char mac[32];
++      extern char *getenv(char *e);
++      unsigned char def_mac[6] = {0, 0x0b, 0x86, 0xba, 0xdb, 0xad};
++      memset(mac, 0, 32);
++      memcpy(mac, getenv("ethaddr"), 17);
++      if (parse_mac_addr(dev, mac)){
++        printk("%s: MAC address not found, using default\n", __func__);
++        memcpy(dev->dev_addr, def_mac, 6);
++      }
++    }
++
++    sp->board_idx = BOARD_IDX_STATIC;
++
++    if (ar2313_init(dev)) {
++        /*
++         * ar2313_init() calls ar2313_init_cleanup() on error.
++         */
++        kfree(dev);
++        return -ENODEV;
++    }
++
++    if (register_netdev(dev)){
++      printk("%s: register_netdev failed\n", __func__);
++      return -1;
++    }
++
++    printk("%s: %s: %02x:%02x:%02x:%02x:%02x:%02x, irq %d\n",
++           dev->name, sp->name, 
++           dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
++           dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5],
++           dev->irq);
++
++    /* start link poll timer */
++    ar2313_setup_timer(dev);
++
++    /*
++     * Register the device
++     */
++    root_dev = dev;
++
++    return 0;
++}
++
++#if 0
++static void ar2313_dump_regs(struct net_device *dev)
++{
++    unsigned int *ptr, i;
++    struct ar2313_private *sp = (struct ar2313_private *)dev->priv;
++
++    ptr = (unsigned int *)sp->eth_regs;
++    for(i=0; i< (sizeof(ETHERNET_STRUCT)/ sizeof(unsigned int)); i++, ptr++) {
++	    printk("ENET: %08x = %08x\n", (int)ptr, *ptr);
++    }
++
++    ptr = (unsigned int *)sp->dma_regs;
++    for(i=0; i< (sizeof(DMA)/ sizeof(unsigned int)); i++, ptr++) {
++	    printk("DMA: %08x = %08x\n", (int)ptr, *ptr);
++    }
++
++    ptr = (unsigned int *)sp->int_regs;
++    for(i=0; i< (sizeof(INTERRUPT)/ sizeof(unsigned int)); i++, ptr++){
++	    printk("INT: %08x = %08x\n", (int)ptr, *ptr);
++    }
++
++    for (i = 0; i < AR2313_DESCR_ENTRIES; i++) {
++	ar2313_descr_t *td = &sp->tx_ring[i];
++        printk("Tx desc %2d: %08x %08x %08x %08x\n", i,
++               td->status, td->devcs, td->addr, td->descr);
++    }
++}
++#endif
++
++#ifdef TX_TIMEOUT
++static void
++ar2313_tx_timeout(struct net_device *dev)
++{
++    struct ar2313_private *sp = (struct ar2313_private *)dev->priv;
++    unsigned long flags;
++	
++#if DEBUG_TX
++    printk("Tx timeout\n");
++#endif
++    spin_lock_irqsave(&sp->lock, flags);
++    ar2313_restart(dev);
++    spin_unlock_irqrestore(&sp->lock, flags);
++}
++#endif
++
++#if DEBUG_MC
++static void
++printMcList(struct net_device *dev)
++{
++    struct dev_mc_list *list = dev->mc_list;
++    int num=0, i;
++    while(list){
++    	printk("%d MC ADDR ", num);
++    	for(i=0;i<list->dmi_addrlen;i++) {
++    	    printk(":%02x", list->dmi_addr[i]);
++    	}
++	list = list->next;
++    	printk("\n");
++    }
++}
++#endif
++
++/*
++ * Set or clear the multicast filter for this adaptor.
++ * THIS IS ABSOLUTE CRAP, disabled
++ */
++static void
++ar2313_multicast_list(struct net_device *dev)
++{   
++    /* 
++     * Always listen to broadcasts and 
++     * treat IFF bits independently 
++     */
++    struct ar2313_private *sp = (struct ar2313_private *)dev->priv;
++    unsigned int recognise;
++
++    recognise = sp->eth_regs->mac_control;
++
++    if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */
++    	recognise |= MAC_CONTROL_PR;
++    } else {
++    	recognise &= ~MAC_CONTROL_PR;
++    }
++
++    if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 15)) {
++#if DEBUG_MC
++	printMcList(dev);
++    	printk("%s: all MULTICAST mc_count %d\n", __FUNCTION__, dev->mc_count);
++#endif
++    	recognise |= MAC_CONTROL_PM;/* all multicast */
++    } else if (dev->mc_count > 0) {
++#if DEBUG_MC
++	printMcList(dev);
++    	printk("%s: mc_count %d\n", __FUNCTION__, dev->mc_count);
++#endif
++    	recognise |= MAC_CONTROL_PM; /* for the time being */
++    }
++#if DEBUG_MC
++    printk("%s: setting %08x to %08x\n", __FUNCTION__, (int)sp->eth_regs, recognise);
++#endif
++	
++    sp->eth_regs->mac_control = recognise;
++}
++
++static void rx_tasklet_cleanup(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++
++    /*
++     * Tasklet may be scheduled. Need to get it removed from the list
++     * since we're about to free the struct.
++     */
++
++    sp->unloading = 1;
++    tasklet_enable(&sp->rx_tasklet);
++    tasklet_kill(&sp->rx_tasklet);
++}
++
++static void __exit ar2313_module_cleanup(void)
++{
++    rx_tasklet_cleanup(root_dev);
++    ar2313_init_cleanup(root_dev);
++    unregister_netdev(root_dev);
++    kfree(root_dev);
++    release_region(PHYSADDR(ETHERNET_BASE), ETHERNET_SIZE*ETHERNET_MACS);
++}
++
++
++/*
++ * Restart the AR2313 ethernet controller. 
++ */
++static int ar2313_restart(struct net_device *dev)
++{
++    /* disable interrupts */
++    disable_irq(dev->irq);
++
++    /* stop mac */
++    ar2313_halt(dev);
++    
++    /* initialize */
++    ar2313_init(dev);
++    
++    /* enable interrupts */
++    enable_irq(dev->irq);
++    
++    return 0;
++}
++
++extern unsigned long mips_machtype;
++
++int __init ar2313_module_init(void)
++{
++    int status=-1;
++    switch (mips_machtype){
++    case MACH_ARUBA_AP60:
++    case MACH_ARUBA_AP65:
++    case MACH_ARUBA_AP40:
++    	root_dev = NULL;
++    	status = ar2313_probe();
++        break;
++    }
++    return status;
++}
++
++
++module_init(ar2313_module_init);
++module_exit(ar2313_module_cleanup);
++
++
++static void ar2313_free_descriptors(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++    if (sp->rx_ring != NULL) {
++	kfree((void*)KSEG0ADDR(sp->rx_ring));
++	sp->rx_ring = NULL;
++	sp->tx_ring = NULL;
++    }
++}
++
++
++static int ar2313_allocate_descriptors(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++    int size;
++    int j;
++    ar2313_descr_t *space;
++
++    if(sp->rx_ring != NULL){
++	printk("%s: already done.\n", __FUNCTION__);
++	return 0;
++    }
++
++    size = (sizeof(ar2313_descr_t) * (AR2313_DESCR_ENTRIES * AR2313_QUEUES));
++    space = kmalloc(size, GFP_KERNEL);
++    if (space == NULL)
++        return 1;
++
++    /* invalidate caches */
++    dma_cache_inv((unsigned int)space, size);
++
++    /* now convert pointer to KSEG1 */
++    space = (ar2313_descr_t *)KSEG1ADDR(space);
++
++    memset((void *)space, 0, size);
++
++    sp->rx_ring = space;
++    space += AR2313_DESCR_ENTRIES;
++
++    sp->tx_ring = space;
++    space += AR2313_DESCR_ENTRIES;
++
++    /* Initialize the transmit Descriptors */
++    for (j = 0; j < AR2313_DESCR_ENTRIES; j++) {
++	ar2313_descr_t *td = &sp->tx_ring[j];
++	td->status = 0;
++	td->devcs  = DMA_TX1_CHAINED;
++	td->addr   = 0;
++	td->descr  = K1_TO_PHYS(&sp->tx_ring[(j+1) & (AR2313_DESCR_ENTRIES-1)]);
++    }
++
++    return 0;
++}
++
++
++/*
++ * Generic cleanup handling data allocated during init. Used when the
++ * module is unloaded or if an error occurs during initialization
++ */
++static void ar2313_init_cleanup(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++    struct sk_buff *skb;
++    int j;
++
++    ar2313_free_descriptors(dev);
++
++    if (sp->eth_regs) iounmap((void*)sp->eth_regs);
++    if (sp->dma_regs) iounmap((void*)sp->dma_regs);
++
++    if (sp->rx_skb) {
++	for (j = 0; j < AR2313_DESCR_ENTRIES; j++) {
++	    skb = sp->rx_skb[j];
++	    if (skb) {
++		sp->rx_skb[j] = NULL;
++		dev_kfree_skb(skb);
++	    }
++	}
++	kfree(sp->rx_skb);
++	sp->rx_skb = NULL;
++    }
++
++    if (sp->tx_skb) {
++	for (j = 0; j < AR2313_DESCR_ENTRIES; j++) {
++	    skb = sp->tx_skb[j];
++	    if (skb) {
++		sp->tx_skb[j] = NULL;
++		dev_kfree_skb(skb);
++	    }
++	}
++	kfree(sp->tx_skb);
++	sp->tx_skb = NULL;
++    }
++}
++
++static int ar2313_setup_timer(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv; 
++
++    init_timer(&sp->link_timer);
++
++    sp->link_timer.function = ar2313_link_timer_fn;
++    sp->link_timer.data = (int) dev;
++    sp->link_timer.expires = jiffies + HZ;
++
++    add_timer(&sp->link_timer);
++    return 0;
++
++}
++
++static void ar2313_link_timer_fn(unsigned long data)
++{
++    struct net_device *dev = (struct net_device *) data;
++    struct ar2313_private *sp = dev->priv; 
++
++    // see if the link status changed
++    // This was needed to make sure we set the PHY to the
++    // autonegotiated value of half or full duplex.
++    ar2313_check_link(dev);
++    
++    // Loop faster when we don't have link. 
++    // This was needed to speed up the AP bootstrap time.
++    if(sp->link == 0) {
++    	mod_timer(&sp->link_timer, jiffies + HZ/2);
++    } else {
++    	mod_timer(&sp->link_timer, jiffies + LINK_TIMER);
++    }
++}
++
++static void ar2313_check_link(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++    u16 phyData;
++
++    phyData = armiiread(sp->phy, MII_BMSR);
++    if (sp->phyData != phyData) {
++	if (phyData & BMSR_LSTATUS) {
++            /* link is present, ready link partner ability to deterine duplexity */
++            int duplex = 0;
++            u16 reg;
++
++            sp->link = 1;
++            reg = armiiread(sp->phy, MII_BMCR);
++            if (reg & BMCR_ANENABLE) {
++                /* auto neg enabled */
++                reg = armiiread(sp->phy, MII_LPA);
++                duplex = (reg & (LPA_100FULL|LPA_10FULL))? 1:0;
++            } else {
++                /* no auto neg, just read duplex config */
++                duplex = (reg & BMCR_FULLDPLX)? 1:0;
++            }
++
++            printk(KERN_INFO "%s: Configuring MAC for %s duplex\n", dev->name,
++                   (duplex)? "full":"half");
++
++            if (duplex) {
++                /* full duplex */
++                sp->eth_regs->mac_control = ((sp->eth_regs->mac_control | MAC_CONTROL_F) &
++                                             ~MAC_CONTROL_DRO);
++            } else {
++                /* half duplex */
++                sp->eth_regs->mac_control = ((sp->eth_regs->mac_control | MAC_CONTROL_DRO) &
++                                             ~MAC_CONTROL_F);
++            }
++    	} else {
++            /* no link */
++            sp->link = 0;
++    	}
++        sp->phyData = phyData;
++    }
++}
++  
++static int
++ar2313_reset_reg(struct net_device *dev)
++{
++    struct ar2313_private *sp = (struct ar2313_private *)dev->priv;
++    unsigned int ethsal, ethsah;
++    unsigned int flags;
++
++    *sp->int_regs |= ar_int_mac_mask;
++    mdelay(10);
++    *sp->int_regs &= ~ar_int_mac_mask;
++    mdelay(10);
++    *sp->int_regs |= ar_int_phy_mask;
++    mdelay(10);
++    *sp->int_regs &= ~ar_int_phy_mask;
++    mdelay(10);
++
++    sp->dma_regs->bus_mode = (DMA_BUS_MODE_SWR);
++    mdelay(10);
++    sp->dma_regs->bus_mode = ((32 << DMA_BUS_MODE_PBL_SHIFT) | DMA_BUS_MODE_BLE);
++
++    /* enable interrupts */
++    sp->dma_regs->intr_ena = (DMA_STATUS_AIS |
++			      DMA_STATUS_NIS |
++			      DMA_STATUS_RI  |
++			      DMA_STATUS_TI  |
++			      DMA_STATUS_FBE);
++    sp->dma_regs->xmt_base = K1_TO_PHYS(sp->tx_ring);
++    sp->dma_regs->rcv_base = K1_TO_PHYS(sp->rx_ring);
++    sp->dma_regs->control = (DMA_CONTROL_SR | DMA_CONTROL_ST | DMA_CONTROL_SF);
++    
++    sp->eth_regs->flow_control = (FLOW_CONTROL_FCE);
++    sp->eth_regs->vlan_tag = (0x8100);
++
++    /* Enable Ethernet Interface */
++    flags = (MAC_CONTROL_TE  | /* transmit enable */
++	     MAC_CONTROL_PM  | /* pass mcast */
++	     MAC_CONTROL_F   | /* full duplex */
++	     MAC_CONTROL_HBD); /* heart beat disabled */
++
++    if (dev->flags & IFF_PROMISC) { /* set promiscuous mode */
++	flags |= MAC_CONTROL_PR;
++    }
++    sp->eth_regs->mac_control = flags;
++
++    /* Set all Ethernet station address registers to their initial values */
++    ethsah = ((((u_int)(dev->dev_addr[5]) << 8) & (u_int)0x0000FF00) |
++	      (((u_int)(dev->dev_addr[4]) << 0) & (u_int)0x000000FF));
++
++    ethsal = ((((u_int)(dev->dev_addr[3]) << 24) & (u_int)0xFF000000) |
++              (((u_int)(dev->dev_addr[2]) << 16) & (u_int)0x00FF0000) |
++              (((u_int)(dev->dev_addr[1]) <<  8) & (u_int)0x0000FF00) |
++              (((u_int)(dev->dev_addr[0]) <<  0) & (u_int)0x000000FF) );
++
++    sp->eth_regs->mac_addr[0] = ethsah;
++    sp->eth_regs->mac_addr[1] = ethsal;
++
++    mdelay(10);
++
++    return(0);
++}
++
++
++static int ar2313_init(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++    int ecode=0;
++
++    /*
++     * Allocate descriptors
++     */
++    if (ar2313_allocate_descriptors(dev)) {
++	printk("%s: %s: ar2313_allocate_descriptors failed\n", 
++			dev->name, __FUNCTION__);
++	ecode = -EAGAIN;
++        goto init_error;
++    }
++
++    /*
++     * Get the memory for the skb rings.
++     */
++    if(sp->rx_skb == NULL) {
++	sp->rx_skb = kmalloc(sizeof(struct sk_buff *) * AR2313_DESCR_ENTRIES, GFP_KERNEL);
++	if (!(sp->rx_skb)) {
++	    printk("%s: %s: rx_skb kmalloc failed\n", 
++			    dev->name, __FUNCTION__);
++	    ecode = -EAGAIN;
++	    goto init_error;
++	}
++    }
++    memset(sp->rx_skb, 0, sizeof(struct sk_buff *) * AR2313_DESCR_ENTRIES);
++
++    if(sp->tx_skb == NULL) {
++	sp->tx_skb = kmalloc(sizeof(struct sk_buff *) * AR2313_DESCR_ENTRIES, GFP_KERNEL);
++	if (!(sp->tx_skb)) {
++	    printk("%s: %s: tx_skb kmalloc failed\n", 
++			    dev->name, __FUNCTION__);
++	    ecode = -EAGAIN;
++	    goto init_error;
++	}
++    }
++    memset(sp->tx_skb, 0, sizeof(struct sk_buff *) * AR2313_DESCR_ENTRIES);
++
++    /*
++     * Set tx_csm before we start receiving interrupts, otherwise
++     * the interrupt handler might think it is supposed to process
++     * tx ints before we are up and running, which may cause a null
++     * pointer access in the int handler.
++     */
++    sp->rx_skbprd = 0;
++    sp->cur_rx = 0;
++    sp->tx_prd = 0;
++    sp->tx_csm = 0;
++
++    /*
++     * Zero the stats before starting the interface
++     */
++    memset(&sp->stats, 0, sizeof(sp->stats));
++
++    /*
++     * We load the ring here as there seem to be no way to tell the
++     * firmware to wipe the ring without re-initializing it.
++     */
++    ar2313_load_rx_ring(dev, RX_RING_SIZE);
++
++    /* 
++     * Init hardware
++     */
++    ar2313_reset_reg(dev);
++
++    /*
++     * Get the IRQ
++     */
++    ecode = request_irq(dev->irq, &ar2313_interrupt, SA_SHIRQ | SA_INTERRUPT, dev->name, dev);
++    if (ecode) {
++        printk(KERN_WARNING "%s: %s: Requested IRQ %d is busy\n",
++	       dev->name, __FUNCTION__, dev->irq);
++	goto init_error;
++    }
++
++#if 0
++    // commented out, for now
++
++    if(mips_machtype == MACH_ARUBA_SAMSUNG) {
++      int i;
++        /* configure Marvell 88E6060 */
++        /* reset chip */
++        armiiwrite(0x1f, 0xa, 0xa130);
++        do {
++            udelay(1000);
++            i = armiiread(sp->phy, 0xa);
++        } while (i & 0x8000);
++      
++        /* configure MAC address */
++        armiiwrite(sp->phy, 0x1, dev->dev_addr[0] << 8 | dev->dev_addr[1]);
++        armiiwrite(sp->phy, 0x2, dev->dev_addr[2] << 8 | dev->dev_addr[3]);
++        armiiwrite(sp->phy, 0x3, dev->dev_addr[4] << 8 | dev->dev_addr[5]);
++      
++        /* set ports to forwarding */
++        armiiwrite(0x18, 0x4, 0x3);
++        armiiwrite(0x1c, 0x4, 0x3);
++        armiiwrite(0x1d, 0x4, 0x3);
++    }
++#endif
++
++    tasklet_enable(&sp->rx_tasklet);
++
++    return 0;
++
++ init_error:
++    ar2313_init_cleanup(dev);
++    return ecode;
++}
++
++/*
++ * Load the rx ring.
++ *
++ * Loading rings is safe without holding the spin lock since this is
++ * done only before the device is enabled, thus no interrupts are
++ * generated and by the interrupt handler/tasklet handler.
++ */
++static void ar2313_load_rx_ring(struct net_device *dev, int nr_bufs)
++{
++
++    struct ar2313_private *sp = ((struct net_device *)dev)->priv;
++    short i, idx;
++
++    idx = sp->rx_skbprd;
++
++    for (i = 0; i < nr_bufs; i++) {
++        struct sk_buff *skb;
++	ar2313_descr_t *rd;
++
++	if (sp->rx_skb[idx]) {
++#if DEBUG_RX
++	    printk(KERN_INFO "ar2313 rx refill full\n");
++#endif /* DEBUG */
++	    break;
++	}
++
++        // partha: create additional room for the second GRE fragment
++	skb = alloc_skb(AR2313_BUFSIZE+128, GFP_ATOMIC);
++	if (!skb) {
++	    printk("\n\n\n\n %s: No memory in system\n\n\n\n", __FUNCTION__);
++	    break;
++	}
++        // partha: create additional room in the front for tx pkt capture
++        skb_reserve(skb, 32);
++
++	/*
++	 * Make sure IP header starts on a fresh cache line.
++	 */
++	skb->dev = dev;
++	skb_reserve(skb, RX_OFFSET);
++	sp->rx_skb[idx] = skb;
++
++	rd = (ar2313_descr_t *) &sp->rx_ring[idx];
++
++	/* initialize dma descriptor */
++	rd->devcs  = ((AR2313_BUFSIZE << DMA_RX1_BSIZE_SHIFT) |
++                      DMA_RX1_CHAINED);
++	rd->addr   = virt_to_phys(skb->data);
++	rd->descr  = virt_to_phys(&sp->rx_ring[(idx+1) & (AR2313_DESCR_ENTRIES-1)]);
++	rd->status = DMA_RX_OWN;
++
++	idx = DSC_NEXT(idx);
++    }
++
++    if (!i) {
++#if DEBUG_ERR
++        printk(KERN_INFO "Out of memory when allocating standard receive buffers\n");
++#endif /* DEBUG */
++    } else {
++	sp->rx_skbprd = idx;
++    }
++
++    return;
++}
++
++#define AR2313_MAX_PKTS_PER_CALL        64
++
++static int ar2313_rx_int(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++    struct sk_buff *skb, *skb_new;
++    ar2313_descr_t *rxdesc;
++    unsigned int status;
++    u32 idx;
++    int pkts = 0;
++    int rval;
++
++    idx = sp->cur_rx;
++
++    /* process at most the entire ring and then wait for another interrupt */
++    while(1) {
++
++	rxdesc = &sp->rx_ring[idx];
++	status = rxdesc->status;
++	if (status & DMA_RX_OWN) {
++	    /* SiByte owns descriptor or descr not yet filled in */
++            rval = 0;
++	    break;
++	}
++
++        if (++pkts > AR2313_MAX_PKTS_PER_CALL) {
++            rval = 1;
++            break;
++        }
++
++#if DEBUG_RX
++	printk("index %d\n", idx);
++	printk("RX status %08x\n", rxdesc->status);
++	printk("RX devcs  %08x\n", rxdesc->devcs );
++	printk("RX addr   %08x\n", rxdesc->addr  );
++	printk("RX descr  %08x\n", rxdesc->descr );
++#endif
++
++        if ((status & (DMA_RX_ERROR|DMA_RX_ERR_LENGTH)) &&
++	    (!(status & DMA_RX_LONG))){
++#if DEBUG_RX
++	    printk("%s: rx ERROR %08x\n", __FUNCTION__, status);
++#endif
++	    sp->stats.rx_errors++;
++	    sp->stats.rx_dropped++;
++
++	    /* add statistics counters */
++	    if (status & DMA_RX_ERR_CRC)    sp->stats.rx_crc_errors++;
++	    if (status & DMA_RX_ERR_COL)    sp->stats.rx_over_errors++;
++	    if (status & DMA_RX_ERR_LENGTH)
++		    sp->stats.rx_length_errors++;
++	    if (status & DMA_RX_ERR_RUNT)   sp->stats.rx_over_errors++;
++	    if (status & DMA_RX_ERR_DESC)   sp->stats.rx_over_errors++;
++
++	} else {
++	    /* alloc new buffer. */
++	    skb_new = dev_alloc_skb(AR2313_BUFSIZE + RX_OFFSET + 128);
++	    if (skb_new != NULL) {
++
++                skb = sp->rx_skb[idx];
++		/* set skb */
++                skb_put(skb, ((status >> DMA_RX_LEN_SHIFT) & 0x3fff) - CRC_LEN);
++
++#ifdef CONFIG_MERLOT
++		if ((dev->am_pkt_handler == NULL) || 
++                    (dev->am_pkt_handler(skb, dev) == 0)) {
++#endif
++                  sp->stats.rx_bytes += skb->len;
++                  skb->protocol = eth_type_trans(skb, dev);
++                  /* pass the packet to upper layers */
++
++#ifdef CONFIG_MERLOT
++                  if (dev->asap_netif_rx)
++                      dev->asap_netif_rx(skb);
++                  else
++#endif
++                  netif_rx(skb);
++#ifdef CONFIG_MERLOT
++		}
++#endif
++		skb_new->dev = dev;
++		/* 16 bit align */
++		skb_reserve(skb_new, RX_OFFSET+32);
++		/* reset descriptor's curr_addr */
++		rxdesc->addr = virt_to_phys(skb_new->data); 
++
++		sp->stats.rx_packets++;
++		sp->rx_skb[idx] = skb_new;
++
++	    } else {
++		sp->stats.rx_dropped++;
++	    }
++	}
++
++	rxdesc->devcs = ((AR2313_BUFSIZE << DMA_RX1_BSIZE_SHIFT) | 
++                         DMA_RX1_CHAINED);
++	rxdesc->status = DMA_RX_OWN;
++
++	idx = DSC_NEXT(idx);
++    }
++
++    sp->cur_rx = idx;
++
++    return rval;
++}
++
++
++static void ar2313_tx_int(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++    u32 idx;
++    struct sk_buff *skb;
++    ar2313_descr_t *txdesc;
++    unsigned int status=0;
++
++    idx = sp->tx_csm;
++
++    while (idx != sp->tx_prd) {
++
++	txdesc = &sp->tx_ring[idx];
++
++#if DEBUG_TX
++	printk("%s: TXINT: csm=%d idx=%d prd=%d status=%x devcs=%x addr=%08x descr=%x\n", 
++		dev->name, sp->tx_csm, idx, sp->tx_prd,
++	       	txdesc->status, txdesc->devcs, txdesc->addr, txdesc->descr);
++#endif /* DEBUG */
++
++	if ((status = txdesc->status) & DMA_TX_OWN) {
++	    /* ar2313 dma still owns descr */
++	    break;
++	}
++	/* done with this descriptor */
++	txdesc->status = 0;
++
++	if (status & DMA_TX_ERROR){
++		sp->stats.tx_errors++;
++		sp->stats.tx_dropped++;
++		if(status & DMA_TX_ERR_UNDER)
++                    sp->stats.tx_fifo_errors++;
++		if(status & DMA_TX_ERR_HB)
++                    sp->stats.tx_heartbeat_errors++;
++		if(status & (DMA_TX_ERR_LOSS |
++                             DMA_TX_ERR_LINK))
++                    sp->stats.tx_carrier_errors++;
++                if (status & (DMA_TX_ERR_LATE|
++                              DMA_TX_ERR_COL |
++                              DMA_TX_ERR_JABBER |
++                              DMA_TX_ERR_DEFER))
++                    sp->stats.tx_aborted_errors++;
++	} else {
++		/* transmit OK */
++		sp->stats.tx_packets++;
++	}
++
++	skb = sp->tx_skb[idx];
++	sp->tx_skb[idx] = NULL;
++	idx = DSC_NEXT(idx);
++	sp->stats.tx_bytes += skb->len;
++	dev_kfree_skb_irq(skb);
++    }
++
++    sp->tx_csm = idx;
++
++    return;
++}
++
++
++static void
++rx_tasklet_func(unsigned long data)
++{
++	struct net_device *dev = (struct net_device *) data;
++	struct ar2313_private *sp = dev->priv;
++
++	if (sp->unloading) {
++	    return;
++	}
++
++        if (ar2313_rx_int(dev)) {
++            tasklet_hi_schedule(&sp->rx_tasklet);
++        }
++        else {
++            unsigned long flags;
++            spin_lock_irqsave(&sp->lock, flags);
++            sp->dma_regs->intr_ena |= DMA_STATUS_RI;
++            spin_unlock_irqrestore(&sp->lock, flags);
++        }
++}
++
++static void
++rx_schedule(struct net_device *dev)
++{
++	struct ar2313_private *sp = dev->priv;
++
++	sp->dma_regs->intr_ena &= ~DMA_STATUS_RI;
++
++	tasklet_hi_schedule(&sp->rx_tasklet);
++}
++
++static irqreturn_t ar2313_interrupt(int irq, void *dev_id, struct pt_regs *ptregs)
++{
++    struct net_device *dev = (struct net_device *)dev_id;
++    struct ar2313_private *sp = dev->priv;
++    unsigned int status, enabled;
++
++    /* clear interrupt */
++    /*
++     * Don't clear RI bit if currently disabled.
++     */
++    status = sp->dma_regs->status;
++    enabled = sp->dma_regs->intr_ena;
++    sp->dma_regs->status = status & enabled;
++
++    if (status & DMA_STATUS_NIS) {
++	/* normal status */
++        /*
++         * Don't schedule rx processing if interrupt
++         * is already disabled.
++         */
++	if (status & enabled & DMA_STATUS_RI) {
++	    /* receive interrupt */
++	    rx_schedule(dev);
++	}
++	if (status & DMA_STATUS_TI) {
++	   /* transmit interrupt */
++	    ar2313_tx_int(dev);
++	}
++    }
++
++    if (status & DMA_STATUS_AIS) {
++#if DEBUG_INT
++        printk("%s: AIS set %08x & %x\n", __FUNCTION__,
++               status, (DMA_STATUS_FBE | DMA_STATUS_TPS));
++#endif
++	/* abnormal status */
++	if (status & (DMA_STATUS_FBE | DMA_STATUS_TPS)) {
++	    ar2313_restart(dev);
++	}
++    }
++    return IRQ_RETVAL(0);
++}
++
++
++static int ar2313_open(struct net_device *dev)
++{
++    struct ar2313_private *sp;
++
++    sp = dev->priv;
++
++    dev->mtu = 1500;
++    netif_start_queue(dev);
++
++    sp->eth_regs->mac_control |= MAC_CONTROL_RE;
++
++    AR2313_MOD_INC_USE_COUNT;
++
++    return 0;
++}
++
++static void ar2313_halt(struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++    int j;
++
++    tasklet_disable(&sp->rx_tasklet);
++
++    /* kill the MAC */
++    sp->eth_regs->mac_control &= ~(MAC_CONTROL_RE | /* disable Receives */
++                                   MAC_CONTROL_TE); /* disable Transmits */
++    /* stop dma */
++    sp->dma_regs->control = 0;
++    sp->dma_regs->bus_mode = DMA_BUS_MODE_SWR;
++
++    /* place phy and MAC in reset */
++    *sp->int_regs |= (ar_int_mac_mask | ar_int_phy_mask);
++
++    /* free buffers on tx ring */
++    for (j = 0; j < AR2313_DESCR_ENTRIES; j++) {
++	struct sk_buff *skb;
++	ar2313_descr_t *txdesc;
++
++	txdesc = &sp->tx_ring[j];
++	txdesc->descr = 0;
++
++	skb = sp->tx_skb[j];
++	if (skb) {
++	    dev_kfree_skb(skb);
++	    sp->tx_skb[j] = NULL;
++	}
++    }
++}
++
++/*
++ * close should do nothing. Here's why. It's called when
++ * 'ifconfig bond0 down' is run. If it calls free_irq then
++ * the irq is gone forever ! When bond0 is made 'up' again,
++ * the ar2313_open () does not call request_irq (). Worse,
++ * the call to ar2313_halt() generates a WDOG reset due to
++ * the write to 'sp->int_regs' and the box reboots.
++ * Commenting this out is good since it allows the
++ * system to resume when bond0 is made up again.
++ */
++static int ar2313_close(struct net_device *dev)
++{
++#if 0
++    /*
++     * Disable interrupts
++     */
++    disable_irq(dev->irq);
++    	
++    /*
++     * Without (or before) releasing irq and stopping hardware, this
++     * is an absolute non-sense, by the way. It will be reset instantly
++     * by the first irq.
++     */
++    netif_stop_queue(dev);
++
++    /* stop the MAC and DMA engines */
++    ar2313_halt(dev);
++
++    /* release the interrupt */
++    free_irq(dev->irq, dev);
++
++#endif
++    AR2313_MOD_DEC_USE_COUNT;
++    return 0;
++}
++
++static int ar2313_start_xmit(struct sk_buff *skb, struct net_device *dev)
++{
++    struct ar2313_private *sp = dev->priv;
++    ar2313_descr_t *td;
++    u32 idx;
++
++    idx = sp->tx_prd;
++    td = &sp->tx_ring[idx];
++
++    if (td->status & DMA_TX_OWN) {
++#if DEBUG_TX
++	printk("%s: No space left to Tx\n", __FUNCTION__);
++#endif
++        /* free skbuf and lie to the caller that we sent it out */
++        sp->stats.tx_dropped++;
++	dev_kfree_skb(skb);
++
++        /* restart transmitter in case locked */
++        sp->dma_regs->xmt_poll = 0;
++	return 0;
++    }
++
++    /* Setup the transmit descriptor. */
++    td->devcs = ((skb->len << DMA_TX1_BSIZE_SHIFT) | 
++                 (DMA_TX1_LS|DMA_TX1_IC|DMA_TX1_CHAINED));
++    td->addr = virt_to_phys(skb->data);
++    td->status = DMA_TX_OWN;
++
++    /* kick transmitter last */
++    sp->dma_regs->xmt_poll = 0;
++
++#if DEBUG_TX
++    printk("index %d\n", idx);
++    printk("TX status %08x\n", td->status);
++    printk("TX devcs  %08x\n", td->devcs );
++    printk("TX addr   %08x\n", td->addr  );
++    printk("TX descr  %08x\n", td->descr );
++#endif
++
++    sp->tx_skb[idx] = skb;
++    idx = DSC_NEXT(idx);
++    sp->tx_prd = idx;
++
++    //dev->trans_start = jiffies;
++
++    return 0;
++}
++
++static int netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
++{
++	struct ar2313_private *np = dev->priv;
++	u32 tmp;
++
++	ecmd->supported = 
++		(SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
++		SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
++		SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
++	
++        ecmd->port = PORT_TP;
++	/* only supports internal transceiver */
++	ecmd->transceiver = XCVR_INTERNAL;
++	/* not sure what this is for */
++	ecmd->phy_address = 1;
++
++	ecmd->advertising = ADVERTISED_MII;
++	tmp = armiiread(np->phy, MII_ADVERTISE);
++	if (tmp & ADVERTISE_10HALF)
++		ecmd->advertising |= ADVERTISED_10baseT_Half;
++	if (tmp & ADVERTISE_10FULL)
++		ecmd->advertising |= ADVERTISED_10baseT_Full;
++	if (tmp & ADVERTISE_100HALF)
++		ecmd->advertising |= ADVERTISED_100baseT_Half;
++	if (tmp & ADVERTISE_100FULL)
++		ecmd->advertising |= ADVERTISED_100baseT_Full;
++
++	tmp = armiiread(np->phy, MII_BMCR);
++	if (tmp & BMCR_ANENABLE) {
++		ecmd->advertising |= ADVERTISED_Autoneg;
++		ecmd->autoneg = AUTONEG_ENABLE;
++	} else {
++		ecmd->autoneg = AUTONEG_DISABLE;
++	}
++
++        if (ecmd->autoneg == AUTONEG_ENABLE) {
++            tmp = armiiread(np->phy, MII_LPA);
++            if (tmp & (LPA_100FULL|LPA_10FULL)) {
++                ecmd->duplex = DUPLEX_FULL;
++            } else {
++                ecmd->duplex = DUPLEX_HALF;
++            }
++            if (tmp & (LPA_100FULL|LPA_100HALF)) {
++		ecmd->speed = SPEED_100;
++            } else {
++		ecmd->speed = SPEED_10;
++            }
++        } else {
++            if (tmp & BMCR_FULLDPLX) {
++                ecmd->duplex = DUPLEX_FULL;
++            } else {
++                ecmd->duplex = DUPLEX_HALF;
++            }
++            if (tmp & BMCR_SPEED100) {
++		ecmd->speed = SPEED_100;
++            } else {
++		ecmd->speed = SPEED_10;
++            }
++	}
++
++	/* ignore maxtxpkt, maxrxpkt for now */
++
++	return 0;
++}
++
++static int netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
++{
++	struct ar2313_private *np = dev->priv;
++	u32 tmp;
++
++	if (ecmd->speed != SPEED_10 && ecmd->speed != SPEED_100)
++		return -EINVAL;
++	if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
++		return -EINVAL;
++	if (ecmd->port != PORT_TP)
++		return -EINVAL;
++	if (ecmd->transceiver != XCVR_INTERNAL)
++		return -EINVAL;
++	if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE)
++		return -EINVAL;
++	/* ignore phy_address, maxtxpkt, maxrxpkt for now */
++	
++	/* WHEW! now lets bang some bits */
++	
++	tmp = armiiread(np->phy, MII_BMCR);
++	if (ecmd->autoneg == AUTONEG_ENABLE) {
++		/* turn on autonegotiation */
++		tmp |= BMCR_ANENABLE;
++                printk("%s: Enabling auto-neg\n", dev->name);
++	} else {
++		/* turn off auto negotiation, set speed and duplexity */
++		tmp &= ~(BMCR_ANENABLE | BMCR_SPEED100 | BMCR_FULLDPLX);
++		if (ecmd->speed == SPEED_100)
++			tmp |= BMCR_SPEED100;
++		if (ecmd->duplex == DUPLEX_FULL)
++			tmp |= BMCR_FULLDPLX;
++                printk("%s: Hard coding %d/%s\n", dev->name, 
++                       (ecmd->speed == SPEED_100)? 100:10,
++                       (ecmd->duplex == DUPLEX_FULL)? "full":"half");
++	}
++	armiiwrite(np->phy, MII_BMCR, tmp);
++        np->phyData = 0;
++	return 0;
++}
++
++static int netdev_ethtool_ioctl(struct net_device *dev, void *useraddr)
++{
++	struct ar2313_private *np = dev->priv;
++	u32 cmd;
++	
++	if (get_user(cmd, (u32 *)useraddr))
++		return -EFAULT;
++
++        switch (cmd) {
++	/* get settings */
++	case ETHTOOL_GSET: {
++		struct ethtool_cmd ecmd = { ETHTOOL_GSET };
++		spin_lock_irq(&np->lock);
++		netdev_get_ecmd(dev, &ecmd);
++		spin_unlock_irq(&np->lock);
++		if (copy_to_user(useraddr, &ecmd, sizeof(ecmd)))
++			return -EFAULT;
++		return 0;
++	}
++	/* set settings */
++	case ETHTOOL_SSET: {
++		struct ethtool_cmd ecmd;
++		int r;
++		if (copy_from_user(&ecmd, useraddr, sizeof(ecmd)))
++			return -EFAULT;
++		spin_lock_irq(&np->lock);
++		r = netdev_set_ecmd(dev, &ecmd);
++		spin_unlock_irq(&np->lock);
++		return r;
++	}
++	/* restart autonegotiation */
++	case ETHTOOL_NWAY_RST: {
++		int tmp;
++		int r = -EINVAL;
++		/* if autoneg is off, it's an error */
++		tmp = armiiread(np->phy, MII_BMCR);
++		if (tmp & BMCR_ANENABLE) {
++			tmp |= (BMCR_ANRESTART);
++			armiiwrite(np->phy, MII_BMCR, tmp);
++			r = 0;
++		}
++		return r;
++	}
++	/* get link status */
++	case ETHTOOL_GLINK: {
++		struct ethtool_value edata = {ETHTOOL_GLINK};
++		edata.data = (armiiread(np->phy, MII_BMSR)&BMSR_LSTATUS) ? 1:0;
++		if (copy_to_user(useraddr, &edata, sizeof(edata)))
++			return -EFAULT;
++		return 0;
++	}
++        }
++	
++	return -EOPNOTSUPP;
++}
++
++static int ar2313_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
++{
++    struct mii_ioctl_data *data = (struct mii_ioctl_data *)&ifr->ifr_data;
++
++    switch (cmd) {
++    case SIOCDEVPRIVATE: {
++        struct ar2313_cmd scmd;
++
++        if (copy_from_user(&scmd, ifr->ifr_data, sizeof(scmd)))
++	    return -EFAULT;
++
++#if DEBUG
++	printk("%s: ioctl devprivate c=%d a=%x l=%d m=%d d=%x,%x\n",
++	       dev->name, scmd.cmd,
++	       scmd.address, scmd.length,
++	       scmd.mailbox, scmd.data[0], scmd.data[1]);
++#endif /* DEBUG */
++
++	switch (scmd.cmd) {
++	case AR2313_READ_DATA:
++	    if(scmd.length==4){
++		scmd.data[0] = *((u32*)scmd.address);
++	    } else if(scmd.length==2) {
++		scmd.data[0] = *((u16*)scmd.address);
++	    } else if (scmd.length==1) {
++		scmd.data[0] = *((u8*)scmd.address);
++	    } else {
++		return -EOPNOTSUPP;
++	    }
++	    if(copy_to_user(ifr->ifr_data, &scmd, sizeof(scmd)))
++	        return -EFAULT;
++	    break;
++
++	case AR2313_WRITE_DATA:
++	    if(scmd.length==4){
++		*((u32*)scmd.address) = scmd.data[0];
++	    } else if(scmd.length==2) {
++		*((u16*)scmd.address) = scmd.data[0];
++	    } else if (scmd.length==1) {
++		*((u8*)scmd.address) = scmd.data[0];
++	    } else {
++		return -EOPNOTSUPP;
++	    }
++	    break;
++
++	case AR2313_GET_VERSION:
++	    // SAMEER: sprintf((char*) &scmd, "%s", ARUBA_VERSION);
++	    if(copy_to_user(ifr->ifr_data, &scmd, sizeof(scmd)))
++	        return -EFAULT;
++	    break;
++
++	default:
++	    return -EOPNOTSUPP;
++	}
++	return 0;
++    }
++      
++    case SIOCETHTOOL:
++        return netdev_ethtool_ioctl(dev, (void *) ifr->ifr_data);
++
++    case SIOCGMIIPHY:		/* Get address of MII PHY in use. */
++        data->phy_id = 1;
++        /* Fall Through */
++
++    case SIOCGMIIREG:		/* Read MII PHY register. */
++    case SIOCDEVPRIVATE+1:	/* for binary compat, remove in 2.5 */
++        data->val_out = armiiread(data->phy_id & 0x1f, 
++                                  data->reg_num & 0x1f);
++        return 0;
++    case SIOCSMIIREG:		/* Write MII PHY register. */
++    case SIOCDEVPRIVATE+2:	/* for binary compat, remove in 2.5 */
++        if (!capable(CAP_NET_ADMIN))
++            return -EPERM;
++        armiiwrite(data->phy_id & 0x1f, 
++                   data->reg_num & 0x1f, data->val_in);
++        return 0;
++
++    case SIOCSIFHWADDR:
++        if (copy_from_user(dev->dev_addr, ifr->ifr_data, sizeof(dev->dev_addr)))
++            return -EFAULT;
++        return 0;
++
++    case SIOCGIFHWADDR:
++        if (copy_to_user(ifr->ifr_data, dev->dev_addr, sizeof(dev->dev_addr)))
++            return -EFAULT;
++        return 0;
++
++    default:
++        break;
++    }
++
++    return -EOPNOTSUPP;
++}
++
++static struct net_device_stats *ar2313_get_stats(struct net_device *dev)
++{
++  struct ar2313_private *sp = dev->priv;
++    return &sp->stats;
++}
++
++static short
++armiiread(short phy, short reg)
++{
++  volatile ETHERNET_STRUCT * ethernet;
++
++  ethernet = (volatile ETHERNET_STRUCT *)ETHERNET_BASE; /* always MAC 0 */
++  ethernet->mii_addr = ((reg << MII_ADDR_REG_SHIFT) |
++                        (phy << MII_ADDR_PHY_SHIFT));
++  while (ethernet->mii_addr & MII_ADDR_BUSY);
++  return (ethernet->mii_data >> MII_DATA_SHIFT);
++}
++
++static void
++armiiwrite(short phy, short reg, short data)
++{
++  volatile ETHERNET_STRUCT * ethernet;
++
++  ethernet = (volatile ETHERNET_STRUCT *)ETHERNET_BASE; /* always MAC 0 */
++  while (ethernet->mii_addr & MII_ADDR_BUSY);
++  ethernet->mii_data = data << MII_DATA_SHIFT;
++  ethernet->mii_addr = ((reg << MII_ADDR_REG_SHIFT) |
++                        (phy << MII_ADDR_PHY_SHIFT) |
++                        MII_ADDR_WRITE);
++}
++