include/uapi/linux/idxd.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /* Copyright(c) 2019 Intel Corporation. All rights rsvd. */
   3 #ifndef _USR_IDXD_H_
   4 #define _USR_IDXD_H_
   5
   6 #ifdef __KERNEL__
   7 #include <linux/types.h>
   8 #else
   9 #include <stdint.h>
  10 #endif
  11
  12 /* Descriptor flags */
  13 #define IDXD_OP_FLAG_FENCE      0x0001
  14 #define IDXD_OP_FLAG_BOF        0x0002
  15 #define IDXD_OP_FLAG_CRAV       0x0004
  16 #define IDXD_OP_FLAG_RCR        0x0008
  17 #define IDXD_OP_FLAG_RCI        0x0010
  18 #define IDXD_OP_FLAG_CRSTS      0x0020
  19 #define IDXD_OP_FLAG_CR         0x0080
  20 #define IDXD_OP_FLAG_CC         0x0100
  21 #define IDXD_OP_FLAG_ADDR1_TCS  0x0200
  22 #define IDXD_OP_FLAG_ADDR2_TCS  0x0400
  23 #define IDXD_OP_FLAG_ADDR3_TCS  0x0800
  24 #define IDXD_OP_FLAG_CR_TCS     0x1000
  25 #define IDXD_OP_FLAG_STORD      0x2000
  26 #define IDXD_OP_FLAG_DRDBK      0x4000
  27 #define IDXD_OP_FLAG_DSTS       0x8000
  28
  29 /* Opcode */
  30 enum dsa_opcode {
  31         DSA_OPCODE_NOOP = 0,
  32         DSA_OPCODE_BATCH,
  33         DSA_OPCODE_DRAIN,
  34         DSA_OPCODE_MEMMOVE,
  35         DSA_OPCODE_MEMFILL,
  36         DSA_OPCODE_COMPARE,
  37         DSA_OPCODE_COMPVAL,
  38         DSA_OPCODE_CR_DELTA,
  39         DSA_OPCODE_AP_DELTA,
  40         DSA_OPCODE_DUALCAST,
  41         DSA_OPCODE_CRCGEN = 0x10,
  42         DSA_OPCODE_COPY_CRC,
  43         DSA_OPCODE_DIF_CHECK,
  44         DSA_OPCODE_DIF_INS,
  45         DSA_OPCODE_DIF_STRP,
  46         DSA_OPCODE_DIF_UPDT,
  47         DSA_OPCODE_CFLUSH = 0x20,
  48 };
  49
  50 /* Completion record status */
  51 enum dsa_completion_status {
  52         DSA_COMP_NONE = 0,
  53         DSA_COMP_SUCCESS,
  54         DSA_COMP_SUCCESS_PRED,
  55         DSA_COMP_PAGE_FAULT_NOBOF,
  56         DSA_COMP_PAGE_FAULT_IR,
  57         DSA_COMP_BATCH_FAIL,
  58         DSA_COMP_BATCH_PAGE_FAULT,
  59         DSA_COMP_DR_OFFSET_NOINC,
  60         DSA_COMP_DR_OFFSET_ERANGE,
  61         DSA_COMP_DIF_ERR,
  62         DSA_COMP_BAD_OPCODE = 0x10,
  63         DSA_COMP_INVALID_FLAGS,
  64         DSA_COMP_NOZERO_RESERVE,
  65         DSA_COMP_XFER_ERANGE,
  66         DSA_COMP_DESC_CNT_ERANGE,
  67         DSA_COMP_DR_ERANGE,
  68         DSA_COMP_OVERLAP_BUFFERS,
  69         DSA_COMP_DCAST_ERR,
  70         DSA_COMP_DESCLIST_ALIGN,
  71         DSA_COMP_INT_HANDLE_INVAL,
  72         DSA_COMP_CRA_XLAT,
  73         DSA_COMP_CRA_ALIGN,
  74         DSA_COMP_ADDR_ALIGN,
  75         DSA_COMP_PRIV_BAD,
  76         DSA_COMP_TRAFFIC_CLASS_CONF,
  77         DSA_COMP_PFAULT_RDBA,
  78         DSA_COMP_HW_ERR1,
  79         DSA_COMP_HW_ERR_DRB,
  80         DSA_COMP_TRANSLATION_FAIL,
  81 };
  82
  83 #define DSA_COMP_STATUS_MASK            0x7f
  84 #define DSA_COMP_STATUS_WRITE           0x80
  85
  86 struct dsa_hw_desc {
  87         uint32_t        pasid:20;
  88         uint32_t        rsvd:11;
  89         uint32_t        priv:1;
  90         uint32_t        flags:24;
  91         uint32_t        opcode:8;
  92         uint64_t        completion_addr;
  93         union {
  94                 uint64_t        src_addr;
  95                 uint64_t        rdback_addr;
  96                 uint64_t        pattern;
  97                 uint64_t        desc_list_addr;
  98         };
  99         union {
 100                 uint64_t        dst_addr;
 101                 uint64_t        rdback_addr2;
 102                 uint64_t        src2_addr;
 103                 uint64_t        comp_pattern;
 104         };
 105         union {
 106                 uint32_t        xfer_size;
 107                 uint32_t        desc_count;
 108         };
 109         uint16_t        int_handle;
 110         uint16_t        rsvd1;
 111         union {
 112                 uint8_t         expected_res;
 113                 struct {
 114                         uint64_t        delta_addr;
 115                         uint32_t        max_delta_size;
 116                 };
 117                 uint32_t        delta_rec_size;
 118                 uint64_t        dest2;
 119                 /* CRC */
 120                 struct {
 121                         uint32_t        crc_seed;
 122                         uint32_t        crc_rsvd;
 123                         uint64_t        seed_addr;
 124                 };
 125                 /* DIF check or strip */
 126                 struct {
 127                         uint8_t         src_dif_flags;
 128                         uint8_t         dif_chk_res;
 129                         uint8_t         dif_chk_flags;
 130                         uint8_t         dif_chk_res2[5];
 131                         uint32_t        chk_ref_tag_seed;
 132                         uint16_t        chk_app_tag_mask;
 133                         uint16_t        chk_app_tag_seed;
 134                 };
 135                 /* DIF insert */
 136                 struct {
 137                         uint8_t         dif_ins_res;
 138                         uint8_t         dest_dif_flag;
 139                         uint8_t         dif_ins_flags;
 140                         uint8_t         dif_ins_res2[13];
 141                         uint32_t        ins_ref_tag_seed;
 142                         uint16_t        ins_app_tag_mask;
 143                         uint16_t        ins_app_tag_seed;
 144                 };
 145                 /* DIF update */
 146                 struct {
 147                         uint8_t         src_upd_flags;
 148                         uint8_t         upd_dest_flags;
 149                         uint8_t         dif_upd_flags;
 150                         uint8_t         dif_upd_res[5];
 151                         uint32_t        src_ref_tag_seed;
 152                         uint16_t        src_app_tag_mask;
 153                         uint16_t        src_app_tag_seed;
 154                         uint32_t        dest_ref_tag_seed;
 155                         uint16_t        dest_app_tag_mask;
 156                         uint16_t        dest_app_tag_seed;
 157                 };
 158
 159                 uint8_t         op_specific[24];
 160         };
 161 } __attribute__((packed));
 162
 163 struct dsa_raw_desc {
 164         uint64_t        field[8];
 165 } __attribute__((packed));
 166
 167 /*
 168  * The status field will be modified by hardware, therefore it should be
 169  * volatile and prevent the compiler from optimize the read.
 170  */
 171 struct dsa_completion_record {
 172         volatile uint8_t        status;
 173         union {
 174                 uint8_t         result;
 175                 uint8_t         dif_status;
 176         };
 177         uint16_t                rsvd;
 178         uint32_t                bytes_completed;
 179         uint64_t                fault_addr;
 180         union {
 181                 uint16_t        delta_rec_size;
 182                 uint16_t        crc_val;
 183
 184                 /* DIF check & strip */
 185                 struct {
 186                         uint32_t        dif_chk_ref_tag;
 187                         uint16_t        dif_chk_app_tag_mask;
 188                         uint16_t        dif_chk_app_tag;
 189                 };
 190
 191                 /* DIF insert */
 192                 struct {
 193                         uint64_t        dif_ins_res;
 194                         uint32_t        dif_ins_ref_tag;
 195                         uint16_t        dif_ins_app_tag_mask;
 196                         uint16_t        dif_ins_app_tag;
 197                 };
 198
 199                 /* DIF update */
 200                 struct {
 201                         uint32_t        dif_upd_src_ref_tag;
 202                         uint16_t        dif_upd_src_app_tag_mask;
 203                         uint16_t        dif_upd_src_app_tag;
 204                         uint32_t        dif_upd_dest_ref_tag;
 205                         uint16_t        dif_upd_dest_app_tag_mask;
 206                         uint16_t        dif_upd_dest_app_tag;
 207                 };
 208
 209                 uint8_t         op_specific[16];
 210         };
 211 } __attribute__((packed));
 212
 213 struct dsa_raw_completion_record {
 214         uint64_t        field[4];
 215 } __attribute__((packed));
 216
 217 #endif