drivers/net/ibmveth.h

   1 /**************************************************************************/
   2 /*                                                                        */
   3 /* IBM eServer i/[Series Virtual Ethernet Device Driver                   */
   4 /* Copyright (C) 2003 IBM Corp.                                           */
   5 /*  Dave Larson (larson1@us.ibm.com)                                      */
   6 /*  Santiago Leon (santil@us.ibm.com)                                     */
   7 /*                                                                        */
   8 /*  This program is free software; you can redistribute it and/or modify  */
   9 /*  it under the terms of the GNU General Public License as published by  */
  10 /*  the Free Software Foundation; either version 2 of the License, or     */
  11 /*  (at your option) any later version.                                   */
  12 /*                                                                        */
  13 /*  This program is distributed in the hope that it will be useful,       */
  14 /*  but WITHOUT ANY WARRANTY; without even the implied warranty of        */
  15 /*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         */
  16 /*  GNU General Public License for more details.                          */
  17 /*                                                                        */
  18 /*  You should have received a copy of the GNU General Public License     */
  19 /*  along with this program; if not, write to the Free Software           */
  20 /*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  */
  21 /*                                                                   USA  */
  22 /*                                                                        */
  23 /**************************************************************************/
  24
  25 #ifndef _IBMVETH_H
  26 #define _IBMVETH_H
  27
  28 #define IbmVethMaxSendFrags 6
  29
  30 /* constants for H_MULTICAST_CTRL */
  31 #define IbmVethMcastReceptionModifyBit     0x80000UL
  32 #define IbmVethMcastReceptionEnableBit     0x20000UL
  33 #define IbmVethMcastFilterModifyBit        0x40000UL
  34 #define IbmVethMcastFilterEnableBit        0x10000UL
  35
  36 #define IbmVethMcastEnableRecv       (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit)
  37 #define IbmVethMcastDisableRecv      (IbmVethMcastReceptionModifyBit)
  38 #define IbmVethMcastEnableFiltering  (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)
  39 #define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
  40 #define IbmVethMcastAddFilter        0x1UL
  41 #define IbmVethMcastRemoveFilter     0x2UL
  42 #define IbmVethMcastClearFilterTable 0x3UL
  43
  44 /* hcall numbers */
  45 #define H_VIO_SIGNAL             0x104
  46 #define H_REGISTER_LOGICAL_LAN   0x114
  47 #define H_FREE_LOGICAL_LAN       0x118
  48 #define H_ADD_LOGICAL_LAN_BUFFER 0x11C
  49 #define H_SEND_LOGICAL_LAN       0x120
  50 #define H_MULTICAST_CTRL         0x130
  51 #define H_CHANGE_LOGICAL_LAN_MAC 0x14C
  52 #define H_FREE_LOGICAL_LAN_BUFFER 0x1D4
  53
  54 /* hcall macros */
  55 #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
  56   plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
  57
  58 #define h_free_logical_lan(ua) \
  59   plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
  60
  61 #define h_add_logical_lan_buffer(ua, buf) \
  62   plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
  63
  64 #define h_send_logical_lan(ua, buf1, buf2, buf3, buf4, buf5, buf6, correlator) \
  65   plpar_hcall_8arg_2ret(H_SEND_LOGICAL_LAN, ua, buf1, buf2, buf3, buf4, buf5, buf6, correlator, &correlator)
  66
  67 #define h_multicast_ctrl(ua, cmd, mac) \
  68   plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
  69
  70 #define h_change_logical_lan_mac(ua, mac) \
  71   plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
  72
  73 #define h_free_logical_lan_buffer(ua, bufsize) \
  74   plpar_hcall_norets(H_FREE_LOGICAL_LAN_BUFFER, ua, bufsize)
  75
  76 #define IbmVethNumBufferPools 5
  77 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
  78 #define IBMVETH_MAX_MTU 68
  79 #define IBMVETH_MAX_POOL_COUNT 4096
  80 #define IBMVETH_MAX_BUF_SIZE (1024 * 128)
  81
  82 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
  83 static int pool_count[] = { 256, 768, 256, 256, 256 };
  84 static int pool_active[] = { 1, 1, 0, 0, 0};
  85
  86 #define IBM_VETH_INVALID_MAP ((u16)0xffff)
  87
  88 struct ibmveth_buff_pool {
  89     u32 size;
  90     u32 index;
  91     u32 buff_size;
  92     u32 threshold;
  93     atomic_t available;
  94     u32 consumer_index;
  95     u32 producer_index;
  96     u16 *free_map;
  97     dma_addr_t *dma_addr;
  98     struct sk_buff **skbuff;
  99     int active;
 100     struct kobject kobj;
 101 };
 102
 103 struct ibmveth_rx_q {
 104     u64        index;
 105     u64        num_slots;
 106     u64        toggle;
 107     dma_addr_t queue_dma;
 108     u32        queue_len;
 109     struct ibmveth_rx_q_entry *queue_addr;
 110 };
 111
 112 struct ibmveth_adapter {
 113     struct vio_dev *vdev;
 114     struct net_device *netdev;
 115     struct net_device_stats stats;
 116     unsigned int mcastFilterSize;
 117     unsigned long mac_addr;
 118     unsigned long liobn;
 119     void * buffer_list_addr;
 120     void * filter_list_addr;
 121     dma_addr_t buffer_list_dma;
 122     dma_addr_t filter_list_dma;
 123     struct ibmveth_buff_pool rx_buff_pool[IbmVethNumBufferPools];
 124     struct ibmveth_rx_q rx_queue;
 125     int pool_config;
 126
 127     /* adapter specific stats */
 128     u64 replenish_task_cycles;
 129     u64 replenish_no_mem;
 130     u64 replenish_add_buff_failure;
 131     u64 replenish_add_buff_success;
 132     u64 rx_invalid_buffer;
 133     u64 rx_no_buffer;
 134     u64 tx_multidesc_send;
 135     u64 tx_linearized;
 136     u64 tx_linearize_failed;
 137     u64 tx_map_failed;
 138     u64 tx_send_failed;
 139     spinlock_t stats_lock;
 140 };
 141
 142 struct ibmveth_buf_desc_fields {
 143     u32 valid : 1;
 144     u32 toggle : 1;
 145     u32 reserved : 6;
 146     u32 length : 24;
 147     u32 address;
 148 };
 149
 150 union ibmveth_buf_desc {
 151     u64 desc;
 152     struct ibmveth_buf_desc_fields fields;
 153 };
 154
 155 struct ibmveth_rx_q_entry {
 156     u16 toggle : 1;
 157     u16 valid : 1;
 158     u16 reserved : 14;
 159     u16 offset;
 160     u32 length;
 161     u64 correlator;
 162 };
 163
 164 #endif /* _IBMVETH_H */