linux/drivers/net/ibmveth.h
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   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
  58static 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
  74static 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_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
  97#define IBMVETH_MAX_MTU 68
  98#define IBMVETH_MAX_POOL_COUNT 4096
  99#define IBMVETH_MAX_BUF_SIZE (1024 * 128)
 100
 101static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
 102static int pool_count[] = { 256, 768, 256, 256, 256 };
 103static int pool_active[] = { 1, 1, 0, 0, 0};
 104
 105#define IBM_VETH_INVALID_MAP ((u16)0xffff)
 106
 107struct ibmveth_buff_pool {
 108    u32 size;
 109    u32 index;
 110    u32 buff_size;
 111    u32 threshold;
 112    atomic_t available;
 113    u32 consumer_index;
 114    u32 producer_index;
 115    u16 *free_map;
 116    dma_addr_t *dma_addr;
 117    struct sk_buff **skbuff;
 118    int active;
 119    struct kobject kobj;
 120};
 121
 122struct ibmveth_rx_q {
 123    u64        index;
 124    u64        num_slots;
 125    u64        toggle;
 126    dma_addr_t queue_dma;
 127    u32        queue_len;
 128    struct ibmveth_rx_q_entry *queue_addr;
 129};
 130
 131struct ibmveth_adapter {
 132    struct vio_dev *vdev;
 133    struct net_device *netdev;
 134    struct napi_struct napi;
 135    struct net_device_stats stats;
 136    unsigned int mcastFilterSize;
 137    unsigned long mac_addr;
 138    void * buffer_list_addr;
 139    void * filter_list_addr;
 140    dma_addr_t buffer_list_dma;
 141    dma_addr_t filter_list_dma;
 142    struct ibmveth_buff_pool rx_buff_pool[IbmVethNumBufferPools];
 143    struct ibmveth_rx_q rx_queue;
 144    int pool_config;
 145    int rx_csum;
 146
 147    /* adapter specific stats */
 148    u64 replenish_task_cycles;
 149    u64 replenish_no_mem;
 150    u64 replenish_add_buff_failure;
 151    u64 replenish_add_buff_success;
 152    u64 rx_invalid_buffer;
 153    u64 rx_no_buffer;
 154    u64 tx_map_failed;
 155    u64 tx_send_failed;
 156    spinlock_t stats_lock;
 157};
 158
 159struct ibmveth_buf_desc_fields {
 160        u32 flags_len;
 161#define IBMVETH_BUF_VALID       0x80000000
 162#define IBMVETH_BUF_TOGGLE      0x40000000
 163#define IBMVETH_BUF_NO_CSUM     0x02000000
 164#define IBMVETH_BUF_CSUM_GOOD   0x01000000
 165#define IBMVETH_BUF_LEN_MASK    0x00FFFFFF
 166        u32 address;
 167};
 168
 169union ibmveth_buf_desc {
 170    u64 desc;
 171    struct ibmveth_buf_desc_fields fields;
 172};
 173
 174struct ibmveth_rx_q_entry {
 175        u32 flags_off;
 176#define IBMVETH_RXQ_TOGGLE              0x80000000
 177#define IBMVETH_RXQ_TOGGLE_SHIFT        31
 178#define IBMVETH_RXQ_VALID               0x40000000
 179#define IBMVETH_RXQ_NO_CSUM             0x02000000
 180#define IBMVETH_RXQ_CSUM_GOOD           0x01000000
 181#define IBMVETH_RXQ_OFF_MASK            0x0000FFFF
 182
 183        u32 length;
 184        u64 correlator;
 185};
 186
 187#endif /* _IBMVETH_H */
 188