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