1/*
  2 * Blackfin On-Chip MAC Driver
  3 *
  4 * Copyright 2004-2007 Analog Devices Inc.
  5 *
  6 * Enter bugs at http://blackfin.uclinux.org/
  7 *
  8 * Licensed under the GPL-2 or later.
  9 */
 10#ifndef _BFIN_MAC_H_
 11#define _BFIN_MAC_H_
 12
 13#include <linux/net_tstamp.h>
 14#include <linux/ptp_clock_kernel.h>
 15#include <linux/timer.h>
 16#include <linux/etherdevice.h>
 17#include <linux/bfin_mac.h>
 18
 19/*
 20 * Disable hardware checksum for bug #5600 if writeback cache is
 21 * enabled. Otherwize, corrupted RX packet will be sent up stack
 22 * without error mark.
 23 */
 24#ifndef CONFIG_BFIN_EXTMEM_WRITEBACK
 25#define BFIN_MAC_CSUM_OFFLOAD
 26#endif
 27
 28#define TX_RECLAIM_JIFFIES (HZ / 5)
 29#define BFIN_MAC_RX_IRQ_DISABLED	1
 30
 31struct dma_descriptor {
 32	struct dma_descriptor *next_dma_desc;
 33	unsigned long start_addr;
 34	unsigned short config;
 35	unsigned short x_count;
 36};
 37
 38struct status_area_rx {
 39#if defined(BFIN_MAC_CSUM_OFFLOAD)
 40	unsigned short ip_hdr_csum;	/* ip header checksum */
 41	/* ip payload(udp or tcp or others) checksum */
 42	unsigned short ip_payload_csum;
 43#endif
 44	unsigned long status_word;	/* the frame status word */
 45};
 46
 47struct status_area_tx {
 48	unsigned long status_word;	/* the frame status word */
 49};
 50
 51/* use two descriptors for a packet */
 52struct net_dma_desc_rx {
 53	struct net_dma_desc_rx *next;
 54	struct sk_buff *skb;
 55	struct dma_descriptor desc_a;
 56	struct dma_descriptor desc_b;
 57	struct status_area_rx status;
 58};
 59
 60/* use two descriptors for a packet */
 61struct net_dma_desc_tx {
 62	struct net_dma_desc_tx *next;
 63	struct sk_buff *skb;
 64	struct dma_descriptor desc_a;
 65	struct dma_descriptor desc_b;
 66	unsigned char packet[1560];
 67	struct status_area_tx status;
 68};
 69
 70struct bfin_mac_local {
 71	/*
 72	 * these are things that the kernel wants me to keep, so users
 73	 * can find out semi-useless statistics of how well the card is
 74	 * performing
 75	 */
 76	struct net_device_stats stats;
 77
 78	spinlock_t lock;
 79
 80	int wol;		/* Wake On Lan */
 81	int irq_wake_requested;
 82	struct timer_list tx_reclaim_timer;
 83	struct net_device *ndev;
 84	struct napi_struct napi;
 85	unsigned long flags;
 86
 87	/* Data for EMAC_VLAN1 regs */
 88	u16 vlan1_mask, vlan2_mask;
 89
 90	/* MII and PHY stuffs */
 91	int old_link;          /* used by bf537_adjust_link */
 92	int old_speed;
 93	int old_duplex;
 94
 95	struct mii_bus *mii_bus;
 96
 97#if defined(CONFIG_BFIN_MAC_USE_HWSTAMP)
 98	u32 addend;
 99	unsigned int shift;
100	s32 max_ppb;
101	struct hwtstamp_config stamp_cfg;
102	struct ptp_clock_info caps;
103	struct ptp_clock *clock;
104	int phc_index;
105	spinlock_t phc_lock; /* protects time lo/hi registers */
106#endif
107};
108
109int bfin_get_ether_addr(char *addr);
110
111#endif