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 macros */
  45 #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
  46   plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
  47
  48 #define h_free_logical_lan(ua) \
  49   plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
  50
  51 #define h_add_logical_lan_buffer(ua, buf) \
  52   plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
  53
  54 static inline long h_send_logical_lan(unsigned long unit_address,
  55                 unsigned long desc1, unsigned long desc2, unsigned long desc3,
  56                 unsigned long desc4, unsigned long desc5, unsigned long desc6,
  57                 unsigned long corellator_in, unsigned long *corellator_out)
  58 {
  59         long rc;
  60         unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
  61
  62         rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1,
  63                         desc2, desc3, desc4, desc5, desc6, corellator_in);
  64
  65         *corellator_out = retbuf[0];
  66
  67         return rc;
  68 }
  69
  70 #define h_multicast_ctrl(ua, cmd, mac) \
  71   plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
  72
  73 #define h_change_logical_lan_mac(ua, mac) \
  74   plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
  75
  76 #define h_free_logical_lan_buffer(ua, bufsize) \
  77   plpar_hcall_norets(H_FREE_LOGICAL_LAN_BUFFER, ua, bufsize)
  78
  79 #define IbmVethNumBufferPools 5
  80 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
  81 #define IBMVETH_MAX_MTU 68
  82 #define IBMVETH_MAX_POOL_COUNT 4096
  83 #define IBMVETH_MAX_BUF_SIZE (1024 * 128)
  84
  85 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
  86 static int pool_count[] = { 256, 768, 256, 256, 256 };
  87 static int pool_active[] = { 1, 1, 0, 0, 0};
  88
  89 #define IBM_VETH_INVALID_MAP ((u16)0xffff)
  90
  91 struct ibmveth_buff_pool {
  92     u32 size;
  93     u32 index;
  94     u32 buff_size;
  95     u32 threshold;
  96     atomic_t available;
  97     u32 consumer_index;
  98     u32 producer_index;
  99     u16 *free_map;
 100     dma_addr_t *dma_addr;
 101     struct sk_buff **skbuff;
 102     int active;
 103     struct kobject kobj;
 104 };
 105
 106 struct ibmveth_rx_q {
 107     u64        index;
 108     u64        num_slots;
 109     u64        toggle;
 110     dma_addr_t queue_dma;
 111     u32        queue_len;
 112     struct ibmveth_rx_q_entry *queue_addr;
 113 };
 114
 115 struct ibmveth_adapter {
 116     struct vio_dev *vdev;
 117     struct net_device *netdev;
 118     struct net_device_stats stats;
 119     unsigned int mcastFilterSize;
 120     unsigned long mac_addr;
 121     unsigned long liobn;
 122     void * buffer_list_addr;
 123     void * filter_list_addr;
 124     dma_addr_t buffer_list_dma;
 125     dma_addr_t filter_list_dma;
 126     struct ibmveth_buff_pool rx_buff_pool[IbmVethNumBufferPools];
 127     struct ibmveth_rx_q rx_queue;
 128     int pool_config;
 129
 130     /* adapter specific stats */
 131     u64 replenish_task_cycles;
 132     u64 replenish_no_mem;
 133     u64 replenish_add_buff_failure;
 134     u64 replenish_add_buff_success;
 135     u64 rx_invalid_buffer;
 136     u64 rx_no_buffer;
 137     u64 tx_multidesc_send;
 138     u64 tx_linearized;
 139     u64 tx_linearize_failed;
 140     u64 tx_map_failed;
 141     u64 tx_send_failed;
 142     spinlock_t stats_lock;
 143 };
 144
 145 struct ibmveth_buf_desc_fields {
 146     u32 valid : 1;
 147     u32 toggle : 1;
 148     u32 reserved : 6;
 149     u32 length : 24;
 150     u32 address;
 151 };
 152
 153 union ibmveth_buf_desc {
 154     u64 desc;
 155     struct ibmveth_buf_desc_fields fields;
 156 };
 157
 158 struct ibmveth_rx_q_entry {
 159     u16 toggle : 1;
 160     u16 valid : 1;
 161     u16 reserved : 14;
 162     u16 offset;
 163     u32 length;
 164     u64 correlator;
 165 };
 166
 167 #endif /* _IBMVETH_H */