drivers/net/ethernet/adi/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/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
  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         spinlock_t lock;
  72
  73         int wol;                /* Wake On Lan */
  74         int irq_wake_requested;
  75         struct timer_list tx_reclaim_timer;
  76         struct net_device *ndev;
  77         struct napi_struct napi;
  78         unsigned long flags;
  79
  80         /* Data for EMAC_VLAN1 regs */
  81         u16 vlan1_mask, vlan2_mask;
  82
  83         /* MII and PHY stuffs */
  84         int old_link;          /* used by bf537_adjust_link */
  85         int old_speed;
  86         int old_duplex;
  87
  88         struct mii_bus *mii_bus;
  89
  90 #if defined(CONFIG_BFIN_MAC_USE_HWSTAMP)
  91         u32 addend;
  92         unsigned int shift;
  93         s32 max_ppb;
  94         struct hwtstamp_config stamp_cfg;
  95         struct ptp_clock_info caps;
  96         struct ptp_clock *clock;
  97         int phc_index;
  98         spinlock_t phc_lock; /* protects time lo/hi registers */
  99 #endif
 100 };
 101
 102 int bfin_get_ether_addr(char *addr);
 103
 104 #endif