drivers/net/bfin_mac.h

   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/clocksource.h>
  15 #include <linux/timecompare.h>
  16 #include <linux/timer.h>
  17 #include <linux/etherdevice.h>
  18 #include <linux/bfin_mac.h>
  19
  20 /*
  21  * Disable hardware checksum for bug #5600 if writeback cache is
  22  * enabled. Otherwize, corrupted RX packet will be sent up stack
  23  * without error mark.
  24  */
  25 #ifndef CONFIG_BFIN_EXTMEM_WRITEBACK
  26 #define BFIN_MAC_CSUM_OFFLOAD
  27 #endif
  28
  29 #define TX_RECLAIM_JIFFIES (HZ / 5)
  30
  31 struct 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
  38 struct 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
  47 struct status_area_tx {
  48         unsigned long status_word;      /* the frame status word */
  49 };
  50
  51 /* use two descriptors for a packet */
  52 struct 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 */
  61 struct 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
  70 struct 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
  85         /* Data for EMAC_VLAN1 regs */
  86         u16 vlan1_mask, vlan2_mask;
  87
  88         /* MII and PHY stuffs */
  89         int old_link;          /* used by bf537_adjust_link */
  90         int old_speed;
  91         int old_duplex;
  92
  93         struct phy_device *phydev;
  94         struct mii_bus *mii_bus;
  95
  96 #if defined(CONFIG_BFIN_MAC_USE_HWSTAMP)
  97         struct cyclecounter cycles;
  98         struct timecounter clock;
  99         struct timecompare compare;
 100         struct hwtstamp_config stamp_cfg;
 101 #endif
 102 };
 103
 104 extern void bfin_get_ether_addr(char *addr);
 105
 106 #endif