qemu/include/hw/s390x/ioinst.h
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   1/*
   2 * S/390 channel I/O instructions
   3 *
   4 * Copyright 2012 IBM Corp.
   5 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
   6 *
   7 * This work is licensed under the terms of the GNU GPL, version 2 or (at
   8 * your option) any later version. See the COPYING file in the top-level
   9 * directory.
  10*/
  11
  12#ifndef S390X_IOINST_H
  13#define S390X_IOINST_H
  14
  15/*
  16 * Channel I/O related definitions, as defined in the Principles
  17 * Of Operation (and taken from the Linux implementation).
  18 */
  19
  20/* subchannel status word (command mode only) */
  21typedef struct SCSW {
  22    uint16_t flags;
  23    uint16_t ctrl;
  24    uint32_t cpa;
  25    uint8_t dstat;
  26    uint8_t cstat;
  27    uint16_t count;
  28} SCSW;
  29QEMU_BUILD_BUG_MSG(sizeof(SCSW) != 12, "size of SCSW is wrong");
  30
  31#define SCSW_FLAGS_MASK_KEY 0xf000
  32#define SCSW_FLAGS_MASK_SCTL 0x0800
  33#define SCSW_FLAGS_MASK_ESWF 0x0400
  34#define SCSW_FLAGS_MASK_CC 0x0300
  35#define SCSW_FLAGS_MASK_FMT 0x0080
  36#define SCSW_FLAGS_MASK_PFCH 0x0040
  37#define SCSW_FLAGS_MASK_ISIC 0x0020
  38#define SCSW_FLAGS_MASK_ALCC 0x0010
  39#define SCSW_FLAGS_MASK_SSI 0x0008
  40#define SCSW_FLAGS_MASK_ZCC 0x0004
  41#define SCSW_FLAGS_MASK_ECTL 0x0002
  42#define SCSW_FLAGS_MASK_PNO 0x0001
  43
  44#define SCSW_CTRL_MASK_FCTL 0x7000
  45#define SCSW_CTRL_MASK_ACTL 0x0fe0
  46#define SCSW_CTRL_MASK_STCTL 0x001f
  47
  48#define SCSW_FCTL_CLEAR_FUNC 0x1000
  49#define SCSW_FCTL_HALT_FUNC 0x2000
  50#define SCSW_FCTL_START_FUNC 0x4000
  51
  52#define SCSW_ACTL_SUSP 0x0020
  53#define SCSW_ACTL_DEVICE_ACTIVE 0x0040
  54#define SCSW_ACTL_SUBCH_ACTIVE 0x0080
  55#define SCSW_ACTL_CLEAR_PEND 0x0100
  56#define SCSW_ACTL_HALT_PEND  0x0200
  57#define SCSW_ACTL_START_PEND 0x0400
  58#define SCSW_ACTL_RESUME_PEND 0x0800
  59
  60#define SCSW_STCTL_STATUS_PEND 0x0001
  61#define SCSW_STCTL_SECONDARY 0x0002
  62#define SCSW_STCTL_PRIMARY 0x0004
  63#define SCSW_STCTL_INTERMEDIATE 0x0008
  64#define SCSW_STCTL_ALERT 0x0010
  65
  66#define SCSW_DSTAT_ATTENTION     0x80
  67#define SCSW_DSTAT_STAT_MOD      0x40
  68#define SCSW_DSTAT_CU_END        0x20
  69#define SCSW_DSTAT_BUSY          0x10
  70#define SCSW_DSTAT_CHANNEL_END   0x08
  71#define SCSW_DSTAT_DEVICE_END    0x04
  72#define SCSW_DSTAT_UNIT_CHECK    0x02
  73#define SCSW_DSTAT_UNIT_EXCEP    0x01
  74
  75#define SCSW_CSTAT_PCI           0x80
  76#define SCSW_CSTAT_INCORR_LEN    0x40
  77#define SCSW_CSTAT_PROG_CHECK    0x20
  78#define SCSW_CSTAT_PROT_CHECK    0x10
  79#define SCSW_CSTAT_DATA_CHECK    0x08
  80#define SCSW_CSTAT_CHN_CTRL_CHK  0x04
  81#define SCSW_CSTAT_INTF_CTRL_CHK 0x02
  82#define SCSW_CSTAT_CHAIN_CHECK   0x01
  83
  84/* path management control word */
  85typedef struct PMCW {
  86    uint32_t intparm;
  87    uint16_t flags;
  88    uint16_t devno;
  89    uint8_t  lpm;
  90    uint8_t  pnom;
  91    uint8_t  lpum;
  92    uint8_t  pim;
  93    uint16_t mbi;
  94    uint8_t  pom;
  95    uint8_t  pam;
  96    uint8_t  chpid[8];
  97    uint32_t chars;
  98} PMCW;
  99QEMU_BUILD_BUG_MSG(sizeof(PMCW) != 28, "size of PMCW is wrong");
 100
 101#define PMCW_FLAGS_MASK_QF 0x8000
 102#define PMCW_FLAGS_MASK_W 0x4000
 103#define PMCW_FLAGS_MASK_ISC 0x3800
 104#define PMCW_FLAGS_MASK_ENA 0x0080
 105#define PMCW_FLAGS_MASK_LM 0x0060
 106#define PMCW_FLAGS_MASK_MME 0x0018
 107#define PMCW_FLAGS_MASK_MP 0x0004
 108#define PMCW_FLAGS_MASK_TF 0x0002
 109#define PMCW_FLAGS_MASK_DNV 0x0001
 110#define PMCW_FLAGS_MASK_INVALID 0x0700
 111
 112#define PMCW_CHARS_MASK_ST 0x00e00000
 113#define PMCW_CHARS_MASK_MBFC 0x00000004
 114#define PMCW_CHARS_MASK_XMWME 0x00000002
 115#define PMCW_CHARS_MASK_CSENSE 0x00000001
 116#define PMCW_CHARS_MASK_INVALID 0xff1ffff8
 117
 118/* subchannel information block */
 119typedef struct SCHIB {
 120    PMCW pmcw;
 121    SCSW scsw;
 122    uint64_t mba;
 123    uint8_t mda[4];
 124} QEMU_PACKED SCHIB;
 125
 126/* interruption response block */
 127typedef struct IRB {
 128    SCSW scsw;
 129    uint32_t esw[5];
 130    uint32_t ecw[8];
 131    uint32_t emw[8];
 132} IRB;
 133QEMU_BUILD_BUG_MSG(sizeof(IRB) != 96, "size of IRB is wrong");
 134
 135/* operation request block */
 136typedef struct ORB {
 137    uint32_t intparm;
 138    uint16_t ctrl0;
 139    uint8_t lpm;
 140    uint8_t ctrl1;
 141    uint32_t cpa;
 142} ORB;
 143QEMU_BUILD_BUG_MSG(sizeof(ORB) != 12, "size of ORB is wrong");
 144
 145#define ORB_CTRL0_MASK_KEY 0xf000
 146#define ORB_CTRL0_MASK_SPND 0x0800
 147#define ORB_CTRL0_MASK_STR 0x0400
 148#define ORB_CTRL0_MASK_MOD 0x0200
 149#define ORB_CTRL0_MASK_SYNC 0x0100
 150#define ORB_CTRL0_MASK_FMT 0x0080
 151#define ORB_CTRL0_MASK_PFCH 0x0040
 152#define ORB_CTRL0_MASK_ISIC 0x0020
 153#define ORB_CTRL0_MASK_ALCC 0x0010
 154#define ORB_CTRL0_MASK_SSIC 0x0008
 155#define ORB_CTRL0_MASK_C64 0x0002
 156#define ORB_CTRL0_MASK_I2K 0x0001
 157#define ORB_CTRL0_MASK_INVALID 0x0004
 158
 159#define ORB_CTRL1_MASK_ILS 0x80
 160#define ORB_CTRL1_MASK_MIDAW 0x40
 161#define ORB_CTRL1_MASK_ORBX 0x01
 162#define ORB_CTRL1_MASK_INVALID 0x3e
 163
 164/* channel command word (type 0) */
 165typedef struct CCW0 {
 166        uint8_t cmd_code;
 167        uint8_t cda0;
 168        uint16_t cda1;
 169        uint8_t flags;
 170        uint8_t reserved;
 171        uint16_t count;
 172} CCW0;
 173QEMU_BUILD_BUG_MSG(sizeof(CCW0) != 8, "size of CCW0 is wrong");
 174
 175/* channel command word (type 1) */
 176typedef struct CCW1 {
 177    uint8_t cmd_code;
 178    uint8_t flags;
 179    uint16_t count;
 180    uint32_t cda;
 181} CCW1;
 182QEMU_BUILD_BUG_MSG(sizeof(CCW1) != 8, "size of CCW1 is wrong");
 183
 184#define CCW_FLAG_DC              0x80
 185#define CCW_FLAG_CC              0x40
 186#define CCW_FLAG_SLI             0x20
 187#define CCW_FLAG_SKIP            0x10
 188#define CCW_FLAG_PCI             0x08
 189#define CCW_FLAG_IDA             0x04
 190#define CCW_FLAG_SUSPEND         0x02
 191#define CCW_FLAG_MIDA            0x01
 192
 193#define CCW_CMD_NOOP             0x03
 194#define CCW_CMD_BASIC_SENSE      0x04
 195#define CCW_CMD_TIC              0x08
 196#define CCW_CMD_SENSE_ID         0xe4
 197
 198typedef struct CRW {
 199    uint16_t flags;
 200    uint16_t rsid;
 201} CRW;
 202QEMU_BUILD_BUG_MSG(sizeof(CRW) != 4, "size of CRW is wrong");
 203
 204#define CRW_FLAGS_MASK_S 0x4000
 205#define CRW_FLAGS_MASK_R 0x2000
 206#define CRW_FLAGS_MASK_C 0x1000
 207#define CRW_FLAGS_MASK_RSC 0x0f00
 208#define CRW_FLAGS_MASK_A 0x0080
 209#define CRW_FLAGS_MASK_ERC 0x003f
 210
 211#define CRW_ERC_EVENT    0x00 /* event information pending */
 212#define CRW_ERC_AVAIL    0x01 /* available */
 213#define CRW_ERC_INIT     0x02 /* initialized */
 214#define CRW_ERC_TERROR   0x03 /* temporary error */
 215#define CRW_ERC_IPI      0x04 /* installed parm initialized */
 216#define CRW_ERC_TERM     0x05 /* terminal */
 217#define CRW_ERC_PERRN    0x06 /* perm. error, facility not init */
 218#define CRW_ERC_PERRI    0x07 /* perm. error, facility init */
 219#define CRW_ERC_PMOD     0x08 /* installed parameters modified */
 220#define CRW_ERC_IPR      0x0A /* installed parameters restored */
 221
 222#define CRW_RSC_SUBCH 0x3
 223#define CRW_RSC_CHP   0x4
 224#define CRW_RSC_CSS   0xb
 225
 226/* I/O interruption code */
 227typedef struct IOIntCode {
 228    uint32_t subsys_id;
 229    uint32_t intparm;
 230    uint32_t interrupt_id;
 231} QEMU_PACKED IOIntCode;
 232
 233/* schid disintegration */
 234#define IOINST_SCHID_ONE(_schid)   ((_schid & 0x00010000) >> 16)
 235#define IOINST_SCHID_M(_schid)     ((_schid & 0x00080000) >> 19)
 236#define IOINST_SCHID_CSSID(_schid) ((_schid & 0xff000000) >> 24)
 237#define IOINST_SCHID_SSID(_schid)  ((_schid & 0x00060000) >> 17)
 238#define IOINST_SCHID_NR(_schid)    (_schid & 0x0000ffff)
 239
 240#define IO_INT_WORD_ISC(_int_word) ((_int_word & 0x38000000) >> 27)
 241#define ISC_TO_ISC_BITS(_isc)      ((0x80 >> _isc) << 24)
 242
 243#define IO_INT_WORD_AI 0x80000000
 244
 245int ioinst_disassemble_sch_ident(uint32_t value, int *m, int *cssid, int *ssid,
 246                                 int *schid);
 247
 248#endif
 249