include/hw/s390x/sclp.h

   1 /*
   2  * SCLP Support
   3  *
   4  * Copyright IBM, Corp. 2012
   5  *
   6  * Authors:
   7  *  Christian Borntraeger <borntraeger@de.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or (at your
  10  * option) any later version.  See the COPYING file in the top-level directory.
  11  *
  12  */
  13
  14 #ifndef HW_S390_SCLP_H
  15 #define HW_S390_SCLP_H
  16
  17 #include "hw/sysbus.h"
  18 #include "hw/qdev.h"
  19 #include "target/s390x/cpu-qom.h"
  20
  21 #define SCLP_CMD_CODE_MASK                      0xffff00ff
  22
  23 /* SCLP command codes */
  24 #define SCLP_CMDW_READ_SCP_INFO                 0x00020001
  25 #define SCLP_CMDW_READ_SCP_INFO_FORCED          0x00120001
  26 #define SCLP_READ_STORAGE_ELEMENT_INFO          0x00040001
  27 #define SCLP_ATTACH_STORAGE_ELEMENT             0x00080001
  28 #define SCLP_ASSIGN_STORAGE                     0x000D0001
  29 #define SCLP_UNASSIGN_STORAGE                   0x000C0001
  30 #define SCLP_CMD_READ_EVENT_DATA                0x00770005
  31 #define SCLP_CMD_WRITE_EVENT_DATA               0x00760005
  32 #define SCLP_CMD_WRITE_EVENT_MASK               0x00780005
  33
  34 /* SCLP Memory hotplug codes */
  35 #define SCLP_FC_ASSIGN_ATTACH_READ_STOR         0xE00000000000ULL
  36 #define SCLP_STARTING_SUBINCREMENT_ID           0x10001
  37 #define SCLP_INCREMENT_UNIT                     0x10000
  38 #define MAX_STORAGE_INCREMENTS                  1020
  39
  40 /* CPU hotplug SCLP codes */
  41 #define SCLP_HAS_CPU_INFO                       0x0C00000000000000ULL
  42 #define SCLP_CMDW_READ_CPU_INFO                 0x00010001
  43 #define SCLP_CMDW_CONFIGURE_CPU                 0x00110001
  44 #define SCLP_CMDW_DECONFIGURE_CPU               0x00100001
  45
  46 /* SCLP PCI codes */
  47 #define SCLP_HAS_IOA_RECONFIG                   0x0000000040000000ULL
  48 #define SCLP_CMDW_CONFIGURE_IOA                 0x001a0001
  49 #define SCLP_CMDW_DECONFIGURE_IOA               0x001b0001
  50 #define SCLP_RECONFIG_PCI_ATYPE                 2
  51
  52 /* SCLP response codes */
  53 #define SCLP_RC_NORMAL_READ_COMPLETION          0x0010
  54 #define SCLP_RC_NORMAL_COMPLETION               0x0020
  55 #define SCLP_RC_SCCB_BOUNDARY_VIOLATION         0x0100
  56 #define SCLP_RC_NO_ACTION_REQUIRED              0x0120
  57 #define SCLP_RC_INVALID_SCLP_COMMAND            0x01f0
  58 #define SCLP_RC_CONTAINED_EQUIPMENT_CHECK       0x0340
  59 #define SCLP_RC_INSUFFICIENT_SCCB_LENGTH        0x0300
  60 #define SCLP_RC_STANDBY_READ_COMPLETION         0x0410
  61 #define SCLP_RC_ADAPTER_IN_RESERVED_STATE       0x05f0
  62 #define SCLP_RC_ADAPTER_TYPE_NOT_RECOGNIZED     0x06f0
  63 #define SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED       0x09f0
  64 #define SCLP_RC_INVALID_FUNCTION                0x40f0
  65 #define SCLP_RC_NO_EVENT_BUFFERS_STORED         0x60f0
  66 #define SCLP_RC_INVALID_SELECTION_MASK          0x70f0
  67 #define SCLP_RC_INCONSISTENT_LENGTHS            0x72f0
  68 #define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR       0x73f0
  69 #define SCLP_RC_INVALID_MASK_LENGTH             0x74f0
  70
  71
  72 /* Service Call Control Block (SCCB) and its elements */
  73
  74 #define SCCB_SIZE 4096
  75
  76 #define SCLP_VARIABLE_LENGTH_RESPONSE           0x80
  77 #define SCLP_EVENT_BUFFER_ACCEPTED              0x80
  78
  79 #define SCLP_FC_NORMAL_WRITE                    0
  80
  81 /*
  82  * Normally packed structures are not the right thing to do, since all code
  83  * must take care of endianness. We cannot use ldl_phys and friends for two
  84  * reasons, though:
  85  * - some of the embedded structures below the SCCB can appear multiple times
  86  *   at different locations, so there is no fixed offset
  87  * - we work on a private copy of the SCCB, since there are several length
  88  *   fields, that would cause a security nightmare if we allow the guest to
  89  *   alter the structure while we parse it. We cannot use ldl_p and friends
  90  *   either without doing pointer arithmetics
  91  * So we have to double check that all users of sclp data structures use the
  92  * right endianness wrappers.
  93  */
  94 typedef struct SCCBHeader {
  95     uint16_t length;
  96     uint8_t function_code;
  97     uint8_t control_mask[3];
  98     uint16_t response_code;
  99 } QEMU_PACKED SCCBHeader;
 100
 101 #define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader))
 102 #define SCCB_CPU_FEATURE_LEN 6
 103
 104 /* CPU information */
 105 typedef struct CPUEntry {
 106     uint8_t address;
 107     uint8_t reserved0;
 108     uint8_t features[SCCB_CPU_FEATURE_LEN];
 109     uint8_t reserved2[6];
 110     uint8_t type;
 111     uint8_t reserved1;
 112 } QEMU_PACKED CPUEntry;
 113
 114 typedef struct ReadInfo {
 115     SCCBHeader h;
 116     uint16_t rnmax;
 117     uint8_t rnsize;
 118     uint8_t  _reserved1[16 - 11];       /* 11-15 */
 119     uint16_t entries_cpu;               /* 16-17 */
 120     uint16_t offset_cpu;                /* 18-19 */
 121     uint8_t  _reserved2[24 - 20];       /* 20-23 */
 122     uint8_t  loadparm[8];               /* 24-31 */
 123     uint8_t  _reserved3[48 - 32];       /* 32-47 */
 124     uint64_t facilities;                /* 48-55 */
 125     uint8_t  _reserved0[76 - 56];       /* 56-75 */
 126     uint32_t ibc_val;
 127     uint8_t  conf_char[99 - 80];        /* 80-98 */
 128     uint8_t mha_pow;
 129     uint32_t rnsize2;
 130     uint64_t rnmax2;
 131     uint8_t  _reserved6[116 - 112];     /* 112-115 */
 132     uint8_t  conf_char_ext[120 - 116];   /* 116-119 */
 133     uint16_t highest_cpu;
 134     uint8_t  _reserved5[124 - 122];     /* 122-123 */
 135     uint32_t hmfai;
 136     struct CPUEntry entries[0];
 137 } QEMU_PACKED ReadInfo;
 138
 139 typedef struct ReadCpuInfo {
 140     SCCBHeader h;
 141     uint16_t nr_configured;         /* 8-9 */
 142     uint16_t offset_configured;     /* 10-11 */
 143     uint16_t nr_standby;            /* 12-13 */
 144     uint16_t offset_standby;        /* 14-15 */
 145     uint8_t reserved0[24-16];       /* 16-23 */
 146     struct CPUEntry entries[0];
 147 } QEMU_PACKED ReadCpuInfo;
 148
 149 typedef struct ReadStorageElementInfo {
 150     SCCBHeader h;
 151     uint16_t max_id;
 152     uint16_t assigned;
 153     uint16_t standby;
 154     uint8_t _reserved0[16 - 14]; /* 14-15 */
 155     uint32_t entries[0];
 156 } QEMU_PACKED ReadStorageElementInfo;
 157
 158 typedef struct AttachStorageElement {
 159     SCCBHeader h;
 160     uint8_t _reserved0[10 - 8];  /* 8-9 */
 161     uint16_t assigned;
 162     uint8_t _reserved1[16 - 12]; /* 12-15 */
 163     uint32_t entries[0];
 164 } QEMU_PACKED AttachStorageElement;
 165
 166 typedef struct AssignStorage {
 167     SCCBHeader h;
 168     uint16_t rn;
 169 } QEMU_PACKED AssignStorage;
 170
 171 typedef struct IoaCfgSccb {
 172     SCCBHeader header;
 173     uint8_t atype;
 174     uint8_t reserved1;
 175     uint16_t reserved2;
 176     uint32_t aid;
 177 } QEMU_PACKED IoaCfgSccb;
 178
 179 typedef struct SCCB {
 180     SCCBHeader h;
 181     char data[SCCB_DATA_LEN];
 182  } QEMU_PACKED SCCB;
 183
 184 #define TYPE_SCLP "sclp"
 185 #define SCLP(obj) OBJECT_CHECK(SCLPDevice, (obj), TYPE_SCLP)
 186 #define SCLP_CLASS(oc) OBJECT_CLASS_CHECK(SCLPDeviceClass, (oc), TYPE_SCLP)
 187 #define SCLP_GET_CLASS(obj) OBJECT_GET_CLASS(SCLPDeviceClass, (obj), TYPE_SCLP)
 188
 189 typedef struct SCLPEventFacility SCLPEventFacility;
 190
 191 typedef struct SCLPDevice {
 192     /* private */
 193     DeviceState parent_obj;
 194     SCLPEventFacility *event_facility;
 195     int increment_size;
 196
 197     /* public */
 198 } SCLPDevice;
 199
 200 typedef struct SCLPDeviceClass {
 201     /* private */
 202     DeviceClass parent_class;
 203     void (*read_SCP_info)(SCLPDevice *sclp, SCCB *sccb);
 204     void (*read_cpu_info)(SCLPDevice *sclp, SCCB *sccb);
 205
 206     /* public */
 207     void (*execute)(SCLPDevice *sclp, SCCB *sccb, uint32_t code);
 208     void (*service_interrupt)(SCLPDevice *sclp, uint32_t sccb);
 209 } SCLPDeviceClass;
 210
 211 static inline int sccb_data_len(SCCB *sccb)
 212 {
 213     return be16_to_cpu(sccb->h.length) - sizeof(sccb->h);
 214 }
 215
 216
 217 void s390_sclp_init(void);
 218 void sclp_service_interrupt(uint32_t sccb);
 219 void raise_irq_cpu_hotplug(void);
 220 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code);
 221
 222 #endif