drivers/net/ibm_emac/ibm_emac_core.h

   1 /*
   2  * ibm_emac_core.h
   3  *
   4  * Ethernet driver for the built in ethernet on the IBM 405 PowerPC
   5  * processor.
   6  *
   7  *      Armin Kuster akuster@mvista.com
   8  *      Sept, 2001
   9  *
  10  *      Orignial driver
  11  *         Johnnie Peters
  12  *         jpeters@mvista.com
  13  *
  14  * Copyright 2000 MontaVista Softare Inc.
  15  *
  16  * This program is free software; you can redistribute  it and/or modify it
  17  * under  the terms of  the GNU General  Public License as published by the
  18  * Free Software Foundation;  either version 2 of the  License, or (at your
  19  * option) any later version.
  20  */
  21
  22 #ifndef _IBM_EMAC_CORE_H_
  23 #define _IBM_EMAC_CORE_H_
  24
  25 #include <linux/netdevice.h>
  26 #include <asm/ocp.h>
  27 #include <asm/mmu.h>            /* For phys_addr_t */
  28
  29 #include "ibm_emac.h"
  30 #include "ibm_emac_phy.h"
  31 #include "ibm_emac_rgmii.h"
  32 #include "ibm_emac_zmii.h"
  33 #include "ibm_emac_mal.h"
  34 #include "ibm_emac_tah.h"
  35
  36 #ifndef CONFIG_IBM_EMAC_TXB
  37 #define NUM_TX_BUFF             64
  38 #define NUM_RX_BUFF             64
  39 #else
  40 #define NUM_TX_BUFF             CONFIG_IBM_EMAC_TXB
  41 #define NUM_RX_BUFF             CONFIG_IBM_EMAC_RXB
  42 #endif
  43
  44 /* This does 16 byte alignment, exactly what we need.
  45  * The packet length includes FCS, but we don't want to
  46  * include that when passing upstream as it messes up
  47  * bridging applications.
  48  */
  49 #ifndef CONFIG_IBM_EMAC_SKBRES
  50 #define SKB_RES 2
  51 #else
  52 #define SKB_RES CONFIG_IBM_EMAC_SKBRES
  53 #endif
  54
  55 /* Note about alignement. alloc_skb() returns a cache line
  56  * aligned buffer. However, dev_alloc_skb() will add 16 more
  57  * bytes and "reserve" them, so our buffer will actually end
  58  * on a half cache line. What we do is to use directly
  59  * alloc_skb, allocate 16 more bytes to match the total amount
  60  * allocated by dev_alloc_skb(), but we don't reserve.
  61  */
  62 #define MAX_NUM_BUF_DESC        255
  63 #define DESC_BUF_SIZE           4080    /* max 4096-16 */
  64 #define DESC_BUF_SIZE_REG       (DESC_BUF_SIZE / 16)
  65
  66 /* Transmitter timeout. */
  67 #define TX_TIMEOUT              (2*HZ)
  68
  69 /* MDIO latency delay */
  70 #define MDIO_DELAY              250
  71
  72 /* Power managment shift registers */
  73 #define IBM_CPM_EMMII   0       /* Shift value for MII */
  74 #define IBM_CPM_EMRX    1       /* Shift value for recv */
  75 #define IBM_CPM_EMTX    2       /* Shift value for MAC */
  76 #define IBM_CPM_EMAC(x) (((x)>>IBM_CPM_EMMII) | ((x)>>IBM_CPM_EMRX) | ((x)>>IBM_CPM_EMTX))
  77
  78 #define ENET_HEADER_SIZE        14
  79 #define ENET_FCS_SIZE           4
  80 #define ENET_DEF_MTU_SIZE       1500
  81 #define ENET_DEF_BUF_SIZE       (ENET_DEF_MTU_SIZE + ENET_HEADER_SIZE + ENET_FCS_SIZE)
  82 #define EMAC_MIN_FRAME          64
  83 #define EMAC_MAX_FRAME          9018
  84 #define EMAC_MIN_MTU            (EMAC_MIN_FRAME - ENET_HEADER_SIZE - ENET_FCS_SIZE)
  85 #define EMAC_MAX_MTU            (EMAC_MAX_FRAME - ENET_HEADER_SIZE - ENET_FCS_SIZE)
  86
  87 #ifdef CONFIG_IBM_EMAC_ERRMSG
  88 void emac_serr_dump_0(struct net_device *dev);
  89 void emac_serr_dump_1(struct net_device *dev);
  90 void emac_err_dump(struct net_device *dev, int em0isr);
  91 void emac_phy_dump(struct net_device *);
  92 void emac_desc_dump(struct net_device *);
  93 void emac_mac_dump(struct net_device *);
  94 void emac_mal_dump(struct net_device *);
  95 #else
  96 #define emac_serr_dump_0(dev) do { } while (0)
  97 #define emac_serr_dump_1(dev) do { } while (0)
  98 #define emac_err_dump(dev,x) do { } while (0)
  99 #define emac_phy_dump(dev) do { } while (0)
 100 #define emac_desc_dump(dev) do { } while (0)
 101 #define emac_mac_dump(dev) do { } while (0)
 102 #define emac_mal_dump(dev) do { } while (0)
 103 #endif
 104
 105 struct ocp_enet_private {
 106         struct sk_buff *tx_skb[NUM_TX_BUFF];
 107         struct sk_buff *rx_skb[NUM_RX_BUFF];
 108         struct mal_descriptor *tx_desc;
 109         struct mal_descriptor *rx_desc;
 110         struct mal_descriptor *rx_dirty;
 111         struct net_device_stats stats;
 112         int tx_cnt;
 113         int rx_slot;
 114         int dirty_rx;
 115         int tx_slot;
 116         int ack_slot;
 117         int rx_buffer_size;
 118
 119         struct mii_phy phy_mii;
 120         int mii_phy_addr;
 121         int want_autoneg;
 122         int timer_ticks;
 123         struct timer_list link_timer;
 124         struct net_device *mdio_dev;
 125
 126         struct ocp_device *rgmii_dev;
 127         int rgmii_input;
 128
 129         struct ocp_device *zmii_dev;
 130         int zmii_input;
 131
 132         struct ibm_ocp_mal *mal;
 133         int mal_tx_chan, mal_rx_chan;
 134         struct mal_commac commac;
 135
 136         struct ocp_device *tah_dev;
 137
 138         int opened;
 139         int going_away;
 140         int wol_irq;
 141         emac_t *emacp;
 142         struct ocp_device *ocpdev;
 143         struct net_device *ndev;
 144         spinlock_t lock;
 145 };
 146 #endif                          /* _IBM_EMAC_CORE_H_ */