drivers/net/igb/e1000_82575.h

   1 /*******************************************************************************
   2
   3   Intel(R) Gigabit Ethernet Linux driver
   4   Copyright(c) 2007 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  24   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  25
  26 *******************************************************************************/
  27
  28 #ifndef _E1000_82575_H_
  29 #define _E1000_82575_H_
  30
  31 #define E1000_RAR_ENTRIES_82575   16
  32
  33 /* SRRCTL bit definitions */
  34 #define E1000_SRRCTL_BSIZEPKT_SHIFT                     10 /* Shift _right_ */
  35 #define E1000_SRRCTL_BSIZEHDRSIZE_SHIFT                 2  /* Shift _left_ */
  36 #define E1000_SRRCTL_DESCTYPE_ADV_ONEBUF                0x02000000
  37 #define E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS          0x0A000000
  38
  39 #define E1000_MRQC_ENABLE_RSS_4Q            0x00000002
  40 #define E1000_MRQC_RSS_FIELD_IPV4_UDP       0x00400000
  41 #define E1000_MRQC_RSS_FIELD_IPV6_UDP       0x00800000
  42 #define E1000_MRQC_RSS_FIELD_IPV6_UDP_EX    0x01000000
  43
  44 #define E1000_EICR_TX_QUEUE ( \
  45     E1000_EICR_TX_QUEUE0 |    \
  46     E1000_EICR_TX_QUEUE1 |    \
  47     E1000_EICR_TX_QUEUE2 |    \
  48     E1000_EICR_TX_QUEUE3)
  49
  50 #define E1000_EICR_RX_QUEUE ( \
  51     E1000_EICR_RX_QUEUE0 |    \
  52     E1000_EICR_RX_QUEUE1 |    \
  53     E1000_EICR_RX_QUEUE2 |    \
  54     E1000_EICR_RX_QUEUE3)
  55
  56 #define E1000_EIMS_RX_QUEUE E1000_EICR_RX_QUEUE
  57 #define E1000_EIMS_TX_QUEUE E1000_EICR_TX_QUEUE
  58
  59 /* Immediate Interrupt RX (A.K.A. Low Latency Interrupt) */
  60
  61 /* Receive Descriptor - Advanced */
  62 union e1000_adv_rx_desc {
  63         struct {
  64                 __le64 pkt_addr;             /* Packet buffer address */
  65                 __le64 hdr_addr;             /* Header buffer address */
  66         } read;
  67         struct {
  68                 struct {
  69                         struct {
  70                                 __le16 pkt_info;   /* RSS type, Packet type */
  71                                 __le16 hdr_info;   /* Split Header,
  72                                                     * header buffer length */
  73                         } lo_dword;
  74                         union {
  75                                 __le32 rss;          /* RSS Hash */
  76                                 struct {
  77                                         __le16 ip_id;    /* IP id */
  78                                         __le16 csum;     /* Packet Checksum */
  79                                 } csum_ip;
  80                         } hi_dword;
  81                 } lower;
  82                 struct {
  83                         __le32 status_error;     /* ext status/error */
  84                         __le16 length;           /* Packet length */
  85                         __le16 vlan;             /* VLAN tag */
  86                 } upper;
  87         } wb;  /* writeback */
  88 };
  89
  90 #define E1000_RXDADV_HDRBUFLEN_MASK      0x7FE0
  91 #define E1000_RXDADV_HDRBUFLEN_SHIFT     5
  92
  93 /* RSS Hash results */
  94
  95 /* RSS Packet Types as indicated in the receive descriptor */
  96
  97 /* Transmit Descriptor - Advanced */
  98 union e1000_adv_tx_desc {
  99         struct {
 100                 __le64 buffer_addr;    /* Address of descriptor's data buf */
 101                 __le32 cmd_type_len;
 102                 __le32 olinfo_status;
 103         } read;
 104         struct {
 105                 __le64 rsvd;       /* Reserved */
 106                 __le32 nxtseq_seed;
 107                 __le32 status;
 108         } wb;
 109 };
 110
 111 /* Adv Transmit Descriptor Config Masks */
 112 #define E1000_ADVTXD_DTYP_CTXT    0x00200000 /* Advanced Context Descriptor */
 113 #define E1000_ADVTXD_DTYP_DATA    0x00300000 /* Advanced Data Descriptor */
 114 #define E1000_ADVTXD_DCMD_IFCS    0x02000000 /* Insert FCS (Ethernet CRC) */
 115 #define E1000_ADVTXD_DCMD_DEXT    0x20000000 /* Descriptor extension (1=Adv) */
 116 #define E1000_ADVTXD_DCMD_VLE     0x40000000 /* VLAN pkt enable */
 117 #define E1000_ADVTXD_DCMD_TSE     0x80000000 /* TCP Seg enable */
 118 #define E1000_ADVTXD_PAYLEN_SHIFT    14 /* Adv desc PAYLEN shift */
 119
 120 /* Context descriptors */
 121 struct e1000_adv_tx_context_desc {
 122         __le32 vlan_macip_lens;
 123         __le32 seqnum_seed;
 124         __le32 type_tucmd_mlhl;
 125         __le32 mss_l4len_idx;
 126 };
 127
 128 #define E1000_ADVTXD_MACLEN_SHIFT    9  /* Adv ctxt desc mac len shift */
 129 #define E1000_ADVTXD_TUCMD_IPV4    0x00000400  /* IP Packet Type: 1=IPv4 */
 130 #define E1000_ADVTXD_TUCMD_L4T_TCP 0x00000800  /* L4 Packet TYPE of TCP */
 131 /* IPSec Encrypt Enable for ESP */
 132 #define E1000_ADVTXD_L4LEN_SHIFT     8  /* Adv ctxt L4LEN shift */
 133 #define E1000_ADVTXD_MSS_SHIFT      16  /* Adv ctxt MSS shift */
 134 /* Adv ctxt IPSec SA IDX mask */
 135 /* Adv ctxt IPSec ESP len mask */
 136
 137 /* Additional Transmit Descriptor Control definitions */
 138 #define E1000_TXDCTL_QUEUE_ENABLE  0x02000000 /* Enable specific Tx Queue */
 139 /* Tx Queue Arbitration Priority 0=low, 1=high */
 140
 141 /* Additional Receive Descriptor Control definitions */
 142 #define E1000_RXDCTL_QUEUE_ENABLE  0x02000000 /* Enable specific Rx Queue */
 143
 144 /* Direct Cache Access (DCA) definitions */
 145
 146
 147
 148 #define E1000_DCA_TXCTRL_TX_WB_RO_EN (1 << 11) /* TX Desc writeback RO bit */
 149
 150 #endif