drivers/dma/ioat/hw.h

   1 /*
   2  * Copyright(c) 2004 - 2009 Intel Corporation. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the Free
   6  * Software Foundation; either version 2 of the License, or (at your option)
   7  * any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc., 59
  16  * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called COPYING.
  20  */
  21 #ifndef _IOAT_HW_H_
  22 #define _IOAT_HW_H_
  23
  24 /* PCI Configuration Space Values */
  25 #define IOAT_MMIO_BAR           0
  26
  27 /* CB device ID's */
  28 #define IOAT_PCI_DID_5000       0x1A38
  29 #define IOAT_PCI_DID_CNB        0x360B
  30 #define IOAT_PCI_DID_SCNB       0x65FF
  31 #define IOAT_PCI_DID_SNB        0x402F
  32
  33 #define IOAT_VER_1_2            0x12    /* Version 1.2 */
  34 #define IOAT_VER_2_0            0x20    /* Version 2.0 */
  35 #define IOAT_VER_3_0            0x30    /* Version 3.0 */
  36 #define IOAT_VER_3_2            0x32    /* Version 3.2 */
  37
  38 int system_has_dca_enabled(struct pci_dev *pdev);
  39
  40 struct ioat_dma_descriptor {
  41         uint32_t        size;
  42         union {
  43                 uint32_t ctl;
  44                 struct {
  45                         unsigned int int_en:1;
  46                         unsigned int src_snoop_dis:1;
  47                         unsigned int dest_snoop_dis:1;
  48                         unsigned int compl_write:1;
  49                         unsigned int fence:1;
  50                         unsigned int null:1;
  51                         unsigned int src_brk:1;
  52                         unsigned int dest_brk:1;
  53                         unsigned int bundle:1;
  54                         unsigned int dest_dca:1;
  55                         unsigned int hint:1;
  56                         unsigned int rsvd2:13;
  57                         #define IOAT_OP_COPY 0x00
  58                         unsigned int op:8;
  59                 } ctl_f;
  60         };
  61         uint64_t        src_addr;
  62         uint64_t        dst_addr;
  63         uint64_t        next;
  64         uint64_t        rsv1;
  65         uint64_t        rsv2;
  66         /* store some driver data in an unused portion of the descriptor */
  67         union {
  68                 uint64_t        user1;
  69                 uint64_t        tx_cnt;
  70         };
  71         uint64_t        user2;
  72 };
  73
  74 struct ioat_fill_descriptor {
  75         uint32_t        size;
  76         union {
  77                 uint32_t ctl;
  78                 struct {
  79                         unsigned int int_en:1;
  80                         unsigned int rsvd:1;
  81                         unsigned int dest_snoop_dis:1;
  82                         unsigned int compl_write:1;
  83                         unsigned int fence:1;
  84                         unsigned int rsvd2:2;
  85                         unsigned int dest_brk:1;
  86                         unsigned int bundle:1;
  87                         unsigned int rsvd4:15;
  88                         #define IOAT_OP_FILL 0x01
  89                         unsigned int op:8;
  90                 } ctl_f;
  91         };
  92         uint64_t        src_data;
  93         uint64_t        dst_addr;
  94         uint64_t        next;
  95         uint64_t        rsv1;
  96         uint64_t        next_dst_addr;
  97         uint64_t        user1;
  98         uint64_t        user2;
  99 };
 100
 101 struct ioat_xor_descriptor {
 102         uint32_t        size;
 103         union {
 104                 uint32_t ctl;
 105                 struct {
 106                         unsigned int int_en:1;
 107                         unsigned int src_snoop_dis:1;
 108                         unsigned int dest_snoop_dis:1;
 109                         unsigned int compl_write:1;
 110                         unsigned int fence:1;
 111                         unsigned int src_cnt:3;
 112                         unsigned int bundle:1;
 113                         unsigned int dest_dca:1;
 114                         unsigned int hint:1;
 115                         unsigned int rsvd:13;
 116                         #define IOAT_OP_XOR 0x87
 117                         #define IOAT_OP_XOR_VAL 0x88
 118                         unsigned int op:8;
 119                 } ctl_f;
 120         };
 121         uint64_t        src_addr;
 122         uint64_t        dst_addr;
 123         uint64_t        next;
 124         uint64_t        src_addr2;
 125         uint64_t        src_addr3;
 126         uint64_t        src_addr4;
 127         uint64_t        src_addr5;
 128 };
 129
 130 struct ioat_xor_ext_descriptor {
 131         uint64_t        src_addr6;
 132         uint64_t        src_addr7;
 133         uint64_t        src_addr8;
 134         uint64_t        next;
 135         uint64_t        rsvd[4];
 136 };
 137
 138 struct ioat_pq_descriptor {
 139         uint32_t        size;
 140         union {
 141                 uint32_t ctl;
 142                 struct {
 143                         unsigned int int_en:1;
 144                         unsigned int src_snoop_dis:1;
 145                         unsigned int dest_snoop_dis:1;
 146                         unsigned int compl_write:1;
 147                         unsigned int fence:1;
 148                         unsigned int src_cnt:3;
 149                         unsigned int bundle:1;
 150                         unsigned int dest_dca:1;
 151                         unsigned int hint:1;
 152                         unsigned int p_disable:1;
 153                         unsigned int q_disable:1;
 154                         unsigned int rsvd:11;
 155                         #define IOAT_OP_PQ 0x89
 156                         #define IOAT_OP_PQ_VAL 0x8a
 157                         unsigned int op:8;
 158                 } ctl_f;
 159         };
 160         uint64_t        src_addr;
 161         uint64_t        p_addr;
 162         uint64_t        next;
 163         uint64_t        src_addr2;
 164         uint64_t        src_addr3;
 165         uint8_t         coef[8];
 166         uint64_t        q_addr;
 167 };
 168
 169 struct ioat_pq_ext_descriptor {
 170         uint64_t        src_addr4;
 171         uint64_t        src_addr5;
 172         uint64_t        src_addr6;
 173         uint64_t        next;
 174         uint64_t        src_addr7;
 175         uint64_t        src_addr8;
 176         uint64_t        rsvd[2];
 177 };
 178
 179 struct ioat_pq_update_descriptor {
 180         uint32_t        size;
 181         union {
 182                 uint32_t ctl;
 183                 struct {
 184                         unsigned int int_en:1;
 185                         unsigned int src_snoop_dis:1;
 186                         unsigned int dest_snoop_dis:1;
 187                         unsigned int compl_write:1;
 188                         unsigned int fence:1;
 189                         unsigned int src_cnt:3;
 190                         unsigned int bundle:1;
 191                         unsigned int dest_dca:1;
 192                         unsigned int hint:1;
 193                         unsigned int p_disable:1;
 194                         unsigned int q_disable:1;
 195                         unsigned int rsvd:3;
 196                         unsigned int coef:8;
 197                         #define IOAT_OP_PQ_UP 0x8b
 198                         unsigned int op:8;
 199                 } ctl_f;
 200         };
 201         uint64_t        src_addr;
 202         uint64_t        p_addr;
 203         uint64_t        next;
 204         uint64_t        src_addr2;
 205         uint64_t        p_src;
 206         uint64_t        q_src;
 207         uint64_t        q_addr;
 208 };
 209
 210 struct ioat_raw_descriptor {
 211         uint64_t        field[8];
 212 };
 213 #endif