drivers/net/ibmveth.h

   1 /*
   2  * IBM Power Virtual Ethernet Device Driver
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  *
  18  * Copyright (C) IBM Corporation, 2003, 2010
  19  *
  20  * Authors: Dave Larson <larson1@us.ibm.com>
  21  *          Santiago Leon <santil@linux.vnet.ibm.com>
  22  *          Brian King <brking@linux.vnet.ibm.com>
  23  *          Robert Jennings <rcj@linux.vnet.ibm.com>
  24  *          Anton Blanchard <anton@au.ibm.com>
  25  */
  26
  27 #ifndef _IBMVETH_H
  28 #define _IBMVETH_H
  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 #define IBMVETH_ILLAN_PADDED_PKT_CSUM   0x0000000000002000UL
  45 #define IBMVETH_ILLAN_TRUNK_PRI_MASK    0x0000000000000F00UL
  46 #define IBMVETH_ILLAN_IPV6_TCP_CSUM             0x0000000000000004UL
  47 #define IBMVETH_ILLAN_IPV4_TCP_CSUM             0x0000000000000002UL
  48 #define IBMVETH_ILLAN_ACTIVE_TRUNK              0x0000000000000001UL
  49
  50 /* hcall macros */
  51 #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
  52   plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
  53
  54 #define h_free_logical_lan(ua) \
  55   plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
  56
  57 #define h_add_logical_lan_buffer(ua, buf) \
  58   plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
  59
  60 static inline long h_send_logical_lan(unsigned long unit_address,
  61                 unsigned long desc1, unsigned long desc2, unsigned long desc3,
  62                 unsigned long desc4, unsigned long desc5, unsigned long desc6,
  63                 unsigned long corellator_in, unsigned long *corellator_out)
  64 {
  65         long rc;
  66         unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
  67
  68         rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1,
  69                         desc2, desc3, desc4, desc5, desc6, corellator_in);
  70
  71         *corellator_out = retbuf[0];
  72
  73         return rc;
  74 }
  75
  76 static inline long h_illan_attributes(unsigned long unit_address,
  77                                       unsigned long reset_mask, unsigned long set_mask,
  78                                       unsigned long *ret_attributes)
  79 {
  80         long rc;
  81         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  82
  83         rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
  84                          reset_mask, set_mask);
  85
  86         *ret_attributes = retbuf[0];
  87
  88         return rc;
  89 }
  90
  91 #define h_multicast_ctrl(ua, cmd, mac) \
  92   plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
  93
  94 #define h_change_logical_lan_mac(ua, mac) \
  95   plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
  96
  97 #define IBMVETH_NUM_BUFF_POOLS 5
  98 #define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
  99 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
 100 #define IBMVETH_MIN_MTU 68
 101 #define IBMVETH_MAX_POOL_COUNT 4096
 102 #define IBMVETH_BUFF_LIST_SIZE 4096
 103 #define IBMVETH_FILT_LIST_SIZE 4096
 104 #define IBMVETH_MAX_BUF_SIZE (1024 * 128)
 105
 106 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
 107 static int pool_count[] = { 256, 512, 256, 256, 256 };
 108 static int pool_active[] = { 1, 1, 0, 0, 0};
 109
 110 #define IBM_VETH_INVALID_MAP ((u16)0xffff)
 111
 112 struct ibmveth_buff_pool {
 113     u32 size;
 114     u32 index;
 115     u32 buff_size;
 116     u32 threshold;
 117     atomic_t available;
 118     u32 consumer_index;
 119     u32 producer_index;
 120     u16 *free_map;
 121     dma_addr_t *dma_addr;
 122     struct sk_buff **skbuff;
 123     int active;
 124     struct kobject kobj;
 125 };
 126
 127 struct ibmveth_rx_q {
 128     u64        index;
 129     u64        num_slots;
 130     u64        toggle;
 131     dma_addr_t queue_dma;
 132     u32        queue_len;
 133     struct ibmveth_rx_q_entry *queue_addr;
 134 };
 135
 136 struct ibmveth_adapter {
 137     struct vio_dev *vdev;
 138     struct net_device *netdev;
 139     struct napi_struct napi;
 140     struct net_device_stats stats;
 141     unsigned int mcastFilterSize;
 142     unsigned long mac_addr;
 143     void * buffer_list_addr;
 144     void * filter_list_addr;
 145     dma_addr_t buffer_list_dma;
 146     dma_addr_t filter_list_dma;
 147     struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
 148     struct ibmveth_rx_q rx_queue;
 149     int pool_config;
 150     int rx_csum;
 151     void *bounce_buffer;
 152     dma_addr_t bounce_buffer_dma;
 153
 154     u64 fw_ipv6_csum_support;
 155     u64 fw_ipv4_csum_support;
 156     /* adapter specific stats */
 157     u64 replenish_task_cycles;
 158     u64 replenish_no_mem;
 159     u64 replenish_add_buff_failure;
 160     u64 replenish_add_buff_success;
 161     u64 rx_invalid_buffer;
 162     u64 rx_no_buffer;
 163     u64 tx_map_failed;
 164     u64 tx_send_failed;
 165 };
 166
 167 struct ibmveth_buf_desc_fields {
 168         u32 flags_len;
 169 #define IBMVETH_BUF_VALID       0x80000000
 170 #define IBMVETH_BUF_TOGGLE      0x40000000
 171 #define IBMVETH_BUF_NO_CSUM     0x02000000
 172 #define IBMVETH_BUF_CSUM_GOOD   0x01000000
 173 #define IBMVETH_BUF_LEN_MASK    0x00FFFFFF
 174         u32 address;
 175 };
 176
 177 union ibmveth_buf_desc {
 178     u64 desc;
 179     struct ibmveth_buf_desc_fields fields;
 180 };
 181
 182 struct ibmveth_rx_q_entry {
 183         u32 flags_off;
 184 #define IBMVETH_RXQ_TOGGLE              0x80000000
 185 #define IBMVETH_RXQ_TOGGLE_SHIFT        31
 186 #define IBMVETH_RXQ_VALID               0x40000000
 187 #define IBMVETH_RXQ_NO_CSUM             0x02000000
 188 #define IBMVETH_RXQ_CSUM_GOOD           0x01000000
 189 #define IBMVETH_RXQ_OFF_MASK            0x0000FFFF
 190
 191         u32 length;
 192         u64 correlator;
 193 };
 194
 195 #endif /* _IBMVETH_H */