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 /* constants for H_MULTICAST_CTRL */
  29 #define IbmVethMcastReceptionModifyBit     0x80000UL
  30 #define IbmVethMcastReceptionEnableBit     0x20000UL
  31 #define IbmVethMcastFilterModifyBit        0x40000UL
  32 #define IbmVethMcastFilterEnableBit        0x10000UL
  33
  34 #define IbmVethMcastEnableRecv       (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit)
  35 #define IbmVethMcastDisableRecv      (IbmVethMcastReceptionModifyBit)
  36 #define IbmVethMcastEnableFiltering  (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)
  37 #define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
  38 #define IbmVethMcastAddFilter        0x1UL
  39 #define IbmVethMcastRemoveFilter     0x2UL
  40 #define IbmVethMcastClearFilterTable 0x3UL
  41
  42 /* hcall macros */
  43 #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
  44   plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
  45
  46 #define h_free_logical_lan(ua) \
  47   plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
  48
  49 #define h_add_logical_lan_buffer(ua, buf) \
  50   plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
  51
  52 static inline long h_send_logical_lan(unsigned long unit_address,
  53                 unsigned long desc1, unsigned long desc2, unsigned long desc3,
  54                 unsigned long desc4, unsigned long desc5, unsigned long desc6,
  55                 unsigned long corellator_in, unsigned long *corellator_out)
  56 {
  57         long rc;
  58         unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
  59
  60         rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1,
  61                         desc2, desc3, desc4, desc5, desc6, corellator_in);
  62
  63         *corellator_out = retbuf[0];
  64
  65         return rc;
  66 }
  67
  68 static inline long h_illan_attributes(unsigned long unit_address,
  69                                       unsigned long reset_mask, unsigned long set_mask,
  70                                       unsigned long *ret_attributes)
  71 {
  72         long rc;
  73         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  74
  75         rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
  76                          reset_mask, set_mask);
  77
  78         *ret_attributes = retbuf[0];
  79
  80         return rc;
  81 }
  82
  83 #define h_multicast_ctrl(ua, cmd, mac) \
  84   plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
  85
  86 #define h_change_logical_lan_mac(ua, mac) \
  87   plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
  88
  89 #define IbmVethNumBufferPools 5
  90 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
  91 #define IBMVETH_MAX_MTU 68
  92 #define IBMVETH_MAX_POOL_COUNT 4096
  93 #define IBMVETH_MAX_BUF_SIZE (1024 * 128)
  94
  95 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
  96 static int pool_count[] = { 256, 768, 256, 256, 256 };
  97 static int pool_active[] = { 1, 1, 0, 0, 0};
  98
  99 #define IBM_VETH_INVALID_MAP ((u16)0xffff)
 100
 101 struct ibmveth_buff_pool {
 102     u32 size;
 103     u32 index;
 104     u32 buff_size;
 105     u32 threshold;
 106     atomic_t available;
 107     u32 consumer_index;
 108     u32 producer_index;
 109     u16 *free_map;
 110     dma_addr_t *dma_addr;
 111     struct sk_buff **skbuff;
 112     int active;
 113     struct kobject kobj;
 114 };
 115
 116 struct ibmveth_rx_q {
 117     u64        index;
 118     u64        num_slots;
 119     u64        toggle;
 120     dma_addr_t queue_dma;
 121     u32        queue_len;
 122     struct ibmveth_rx_q_entry *queue_addr;
 123 };
 124
 125 struct ibmveth_adapter {
 126     struct vio_dev *vdev;
 127     struct net_device *netdev;
 128     struct napi_struct napi;
 129     struct net_device_stats stats;
 130     unsigned int mcastFilterSize;
 131     unsigned long mac_addr;
 132     void * buffer_list_addr;
 133     void * filter_list_addr;
 134     dma_addr_t buffer_list_dma;
 135     dma_addr_t filter_list_dma;
 136     struct ibmveth_buff_pool rx_buff_pool[IbmVethNumBufferPools];
 137     struct ibmveth_rx_q rx_queue;
 138     int pool_config;
 139     int rx_csum;
 140
 141     /* adapter specific stats */
 142     u64 replenish_task_cycles;
 143     u64 replenish_no_mem;
 144     u64 replenish_add_buff_failure;
 145     u64 replenish_add_buff_success;
 146     u64 rx_invalid_buffer;
 147     u64 rx_no_buffer;
 148     u64 tx_map_failed;
 149     u64 tx_send_failed;
 150     spinlock_t stats_lock;
 151 };
 152
 153 struct ibmveth_buf_desc_fields {
 154     u32 valid : 1;
 155     u32 toggle : 1;
 156     u32 reserved : 4;
 157     u32 no_csum : 1;
 158     u32 csum_good : 1;
 159     u32 length : 24;
 160     u32 address;
 161 };
 162
 163 union ibmveth_buf_desc {
 164     u64 desc;
 165     struct ibmveth_buf_desc_fields fields;
 166 };
 167
 168 struct ibmveth_illan_attributes_fields {
 169         u32 reserved;
 170         u32 reserved2 : 18;
 171         u32 csum_offload_padded_pkt_support : 1;
 172         u32 reserved3 : 1;
 173         u32 trunk_priority : 4;
 174         u32 reserved4 : 5;
 175         u32 tcp_csum_offload_ipv6 : 1;
 176         u32 tcp_csum_offload_ipv4 : 1;
 177         u32 active_trunk : 1;
 178 };
 179
 180 union ibmveth_illan_attributes {
 181         u64 desc;
 182         struct ibmveth_illan_attributes_fields fields;
 183 };
 184
 185 struct ibmveth_rx_q_entry {
 186     u16 toggle : 1;
 187     u16 valid : 1;
 188     u16 reserved : 4;
 189     u16 no_csum : 1;
 190     u16 csum_good : 1;
 191     u16 reserved2 : 8;
 192     u16 offset;
 193     u32 length;
 194     u64 correlator;
 195 };
 196
 197 #endif /* _IBMVETH_H */