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 #define IBMVETH_ILLAN_PADDED_PKT_CSUM   0x0000000000002000ULL
  43 #define IBMVETH_ILLAN_TRUNK_PRI_MASK    0x0000000000000F00ULL
  44 #define IBMVETH_ILLAN_IPV6_TCP_CSUM             0x0000000000000004ULL
  45 #define IBMVETH_ILLAN_IPV4_TCP_CSUM             0x0000000000000002ULL
  46 #define IBMVETH_ILLAN_ACTIVE_TRUNK              0x0000000000000001ULL
  47
  48 /* hcall macros */
  49 #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
  50   plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
  51
  52 #define h_free_logical_lan(ua) \
  53   plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
  54
  55 #define h_add_logical_lan_buffer(ua, buf) \
  56   plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
  57
  58 static inline long h_send_logical_lan(unsigned long unit_address,
  59                 unsigned long desc1, unsigned long desc2, unsigned long desc3,
  60                 unsigned long desc4, unsigned long desc5, unsigned long desc6,
  61                 unsigned long corellator_in, unsigned long *corellator_out)
  62 {
  63         long rc;
  64         unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
  65
  66         rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1,
  67                         desc2, desc3, desc4, desc5, desc6, corellator_in);
  68
  69         *corellator_out = retbuf[0];
  70
  71         return rc;
  72 }
  73
  74 static inline long h_illan_attributes(unsigned long unit_address,
  75                                       unsigned long reset_mask, unsigned long set_mask,
  76                                       unsigned long *ret_attributes)
  77 {
  78         long rc;
  79         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  80
  81         rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
  82                          reset_mask, set_mask);
  83
  84         *ret_attributes = retbuf[0];
  85
  86         return rc;
  87 }
  88
  89 #define h_multicast_ctrl(ua, cmd, mac) \
  90   plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
  91
  92 #define h_change_logical_lan_mac(ua, mac) \
  93   plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
  94
  95 #define IbmVethNumBufferPools 5
  96 #define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
  97 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
  98 #define IBMVETH_MAX_MTU 68
  99 #define IBMVETH_MAX_POOL_COUNT 4096
 100 #define IBMVETH_BUFF_LIST_SIZE 4096
 101 #define IBMVETH_FILT_LIST_SIZE 4096
 102 #define IBMVETH_MAX_BUF_SIZE (1024 * 128)
 103
 104 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
 105 static int pool_count[] = { 256, 768, 256, 256, 256 };
 106 static int pool_active[] = { 1, 1, 0, 0, 0};
 107
 108 #define IBM_VETH_INVALID_MAP ((u16)0xffff)
 109
 110 struct ibmveth_buff_pool {
 111     u32 size;
 112     u32 index;
 113     u32 buff_size;
 114     u32 threshold;
 115     atomic_t available;
 116     u32 consumer_index;
 117     u32 producer_index;
 118     u16 *free_map;
 119     dma_addr_t *dma_addr;
 120     struct sk_buff **skbuff;
 121     int active;
 122     struct kobject kobj;
 123 };
 124
 125 struct ibmveth_rx_q {
 126     u64        index;
 127     u64        num_slots;
 128     u64        toggle;
 129     dma_addr_t queue_dma;
 130     u32        queue_len;
 131     struct ibmveth_rx_q_entry *queue_addr;
 132 };
 133
 134 struct ibmveth_adapter {
 135     struct vio_dev *vdev;
 136     struct net_device *netdev;
 137     struct napi_struct napi;
 138     struct net_device_stats stats;
 139     unsigned int mcastFilterSize;
 140     unsigned long mac_addr;
 141     void * buffer_list_addr;
 142     void * filter_list_addr;
 143     dma_addr_t buffer_list_dma;
 144     dma_addr_t filter_list_dma;
 145     struct ibmveth_buff_pool rx_buff_pool[IbmVethNumBufferPools];
 146     struct ibmveth_rx_q rx_queue;
 147     int pool_config;
 148     int rx_csum;
 149     void *bounce_buffer;
 150     dma_addr_t bounce_buffer_dma;
 151
 152     /* adapter specific stats */
 153     u64 replenish_task_cycles;
 154     u64 replenish_no_mem;
 155     u64 replenish_add_buff_failure;
 156     u64 replenish_add_buff_success;
 157     u64 rx_invalid_buffer;
 158     u64 rx_no_buffer;
 159     u64 tx_map_failed;
 160     u64 tx_send_failed;
 161     spinlock_t stats_lock;
 162 };
 163
 164 struct ibmveth_buf_desc_fields {
 165         u32 flags_len;
 166 #define IBMVETH_BUF_VALID       0x80000000
 167 #define IBMVETH_BUF_TOGGLE      0x40000000
 168 #define IBMVETH_BUF_NO_CSUM     0x02000000
 169 #define IBMVETH_BUF_CSUM_GOOD   0x01000000
 170 #define IBMVETH_BUF_LEN_MASK    0x00FFFFFF
 171         u32 address;
 172 };
 173
 174 union ibmveth_buf_desc {
 175     u64 desc;
 176     struct ibmveth_buf_desc_fields fields;
 177 };
 178
 179 struct ibmveth_rx_q_entry {
 180         u32 flags_off;
 181 #define IBMVETH_RXQ_TOGGLE              0x80000000
 182 #define IBMVETH_RXQ_TOGGLE_SHIFT        31
 183 #define IBMVETH_RXQ_VALID               0x40000000
 184 #define IBMVETH_RXQ_NO_CSUM             0x02000000
 185 #define IBMVETH_RXQ_CSUM_GOOD           0x01000000
 186 #define IBMVETH_RXQ_OFF_MASK            0x0000FFFF
 187
 188         u32 length;
 189         u64 correlator;
 190 };
 191
 192 #endif /* _IBMVETH_H */