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 static inline long h_illan_attributes(unsigned long unit_address,
  71                                       unsigned long reset_mask, unsigned long set_mask,
  72                                       unsigned long *ret_attributes)
  73 {
  74         long rc;
  75         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  76
  77         rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
  78                          reset_mask, set_mask);
  79
  80         *ret_attributes = retbuf[0];
  81
  82         return rc;
  83 }
  84
  85 #define h_multicast_ctrl(ua, cmd, mac) \
  86   plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
  87
  88 #define h_change_logical_lan_mac(ua, mac) \
  89   plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
  90
  91 #define IbmVethNumBufferPools 5
  92 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
  93 #define IBMVETH_MAX_MTU 68
  94 #define IBMVETH_MAX_POOL_COUNT 4096
  95 #define IBMVETH_MAX_BUF_SIZE (1024 * 128)
  96
  97 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
  98 static int pool_count[] = { 256, 768, 256, 256, 256 };
  99 static int pool_active[] = { 1, 1, 0, 0, 0};
 100
 101 #define IBM_VETH_INVALID_MAP ((u16)0xffff)
 102
 103 struct ibmveth_buff_pool {
 104     u32 size;
 105     u32 index;
 106     u32 buff_size;
 107     u32 threshold;
 108     atomic_t available;
 109     u32 consumer_index;
 110     u32 producer_index;
 111     u16 *free_map;
 112     dma_addr_t *dma_addr;
 113     struct sk_buff **skbuff;
 114     int active;
 115     struct kobject kobj;
 116 };
 117
 118 struct ibmveth_rx_q {
 119     u64        index;
 120     u64        num_slots;
 121     u64        toggle;
 122     dma_addr_t queue_dma;
 123     u32        queue_len;
 124     struct ibmveth_rx_q_entry *queue_addr;
 125 };
 126
 127 struct ibmveth_adapter {
 128     struct vio_dev *vdev;
 129     struct net_device *netdev;
 130     struct napi_struct napi;
 131     struct net_device_stats stats;
 132     unsigned int mcastFilterSize;
 133     unsigned long mac_addr;
 134     void * buffer_list_addr;
 135     void * filter_list_addr;
 136     dma_addr_t buffer_list_dma;
 137     dma_addr_t filter_list_dma;
 138     struct ibmveth_buff_pool rx_buff_pool[IbmVethNumBufferPools];
 139     struct ibmveth_rx_q rx_queue;
 140     int pool_config;
 141     int rx_csum;
 142
 143     /* adapter specific stats */
 144     u64 replenish_task_cycles;
 145     u64 replenish_no_mem;
 146     u64 replenish_add_buff_failure;
 147     u64 replenish_add_buff_success;
 148     u64 rx_invalid_buffer;
 149     u64 rx_no_buffer;
 150     u64 tx_multidesc_send;
 151     u64 tx_linearized;
 152     u64 tx_linearize_failed;
 153     u64 tx_map_failed;
 154     u64 tx_send_failed;
 155     spinlock_t stats_lock;
 156 };
 157
 158 struct ibmveth_buf_desc_fields {
 159     u32 valid : 1;
 160     u32 toggle : 1;
 161     u32 reserved : 4;
 162     u32 no_csum : 1;
 163     u32 csum_good : 1;
 164     u32 length : 24;
 165     u32 address;
 166 };
 167
 168 union ibmveth_buf_desc {
 169     u64 desc;
 170     struct ibmveth_buf_desc_fields fields;
 171 };
 172
 173 struct ibmveth_illan_attributes_fields {
 174         u32 reserved;
 175         u32 reserved2 : 18;
 176         u32 csum_offload_padded_pkt_support : 1;
 177         u32 reserved3 : 1;
 178         u32 trunk_priority : 4;
 179         u32 reserved4 : 5;
 180         u32 tcp_csum_offload_ipv6 : 1;
 181         u32 tcp_csum_offload_ipv4 : 1;
 182         u32 active_trunk : 1;
 183 };
 184
 185 union ibmveth_illan_attributes {
 186         u64 desc;
 187         struct ibmveth_illan_attributes_fields fields;
 188 };
 189
 190 struct ibmveth_rx_q_entry {
 191     u16 toggle : 1;
 192     u16 valid : 1;
 193     u16 reserved : 4;
 194     u16 no_csum : 1;
 195     u16 csum_good : 1;
 196     u16 reserved2 : 8;
 197     u16 offset;
 198     u32 length;
 199     u64 correlator;
 200 };
 201
 202 #endif /* _IBMVETH_H */