include/hw/s390x/ioinst.h

   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) */
  21 typedef 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;
  29 QEMU_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 */
  85 typedef 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;
  99 QEMU_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 */
 119 typedef 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 */
 127 typedef struct IRB {
 128     SCSW scsw;
 129     uint32_t esw[5];
 130     uint32_t ecw[8];
 131     uint32_t emw[8];
 132 } IRB;
 133 QEMU_BUILD_BUG_MSG(sizeof(IRB) != 96, "size of IRB is wrong");
 134
 135 /* operation request block */
 136 typedef struct ORB {
 137     uint32_t intparm;
 138     uint16_t ctrl0;
 139     uint8_t lpm;
 140     uint8_t ctrl1;
 141     uint32_t cpa;
 142 } ORB;
 143 QEMU_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) */
 165 typedef 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;
 173 QEMU_BUILD_BUG_MSG(sizeof(CCW0) != 8, "size of CCW0 is wrong");
 174
 175 /* channel command word (type 1) */
 176 typedef struct CCW1 {
 177     uint8_t cmd_code;
 178     uint8_t flags;
 179     uint16_t count;
 180     uint32_t cda;
 181 } CCW1;
 182 QEMU_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
 198 typedef struct CRW {
 199     uint16_t flags;
 200     uint16_t rsid;
 201 } CRW;
 202 QEMU_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 */
 227 typedef 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
 245 int ioinst_disassemble_sch_ident(uint32_t value, int *m, int *cssid, int *ssid,
 246                                  int *schid);
 247
 248 #endif