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 phy_device *phydev;
96	struct mii_bus *mii_bus;
97
98#if defined(CONFIG_BFIN_MAC_USE_HWSTAMP)
99	u32 addend;
100	unsigned int shift;
101	s32 max_ppb;
102	struct hwtstamp_config stamp_cfg;
103	struct ptp_clock_info caps;
104	struct ptp_clock *clock;
105	int phc_index;
106	spinlock_t phc_lock; /* protects time lo/hi registers */
107#endif
108};
109
110int bfin_get_ether_addr(char *addr);
111
112#endif
113