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 #include "qom/object.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 arithmetic 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 #define SCLP_READ_SCP_INFO_FIXED_CPU_OFFSET 128 115 #define SCLP_READ_SCP_INFO_MNEST 2 116 typedef struct ReadInfo { 117 SCCBHeader h; 118 uint16_t rnmax; 119 uint8_t rnsize; 120 uint8_t _reserved1[16 - 11]; /* 11-15 */ 121 uint16_t entries_cpu; /* 16-17 */ 122 uint16_t offset_cpu; /* 18-19 */ 123 uint8_t _reserved2[24 - 20]; /* 20-23 */ 124 uint8_t loadparm[8]; /* 24-31 */ 125 uint8_t _reserved3[48 - 32]; /* 32-47 */ 126 uint64_t facilities; /* 48-55 */ 127 uint8_t _reserved0[76 - 56]; /* 56-75 */ 128 uint32_t ibc_val; 129 uint8_t conf_char[99 - 80]; /* 80-98 */ 130 uint8_t mha_pow; 131 uint32_t rnsize2; 132 uint64_t rnmax2; 133 uint8_t _reserved6[116 - 112]; /* 112-115 */ 134 uint8_t conf_char_ext[120 - 116]; /* 116-119 */ 135 uint16_t highest_cpu; 136 uint8_t _reserved5[124 - 122]; /* 122-123 */ 137 uint32_t hmfai; 138 uint8_t _reserved7[134 - 128]; /* 128-133 */ 139 uint8_t fac134; 140 uint8_t _reserved8[144 - 135]; /* 135-143 */ 141 struct CPUEntry entries[]; 142 /* 143 * When the Extended-Length SCCB (ELS) feature is enabled the 144 * start of the entries field begins at an offset denoted by the 145 * offset_cpu field, otherwise it's at an offset of 128. 146 */ 147 } QEMU_PACKED ReadInfo; 148 149 typedef struct ReadCpuInfo { 150 SCCBHeader h; 151 uint16_t nr_configured; /* 8-9 */ 152 uint16_t offset_configured; /* 10-11 */ 153 uint16_t nr_standby; /* 12-13 */ 154 uint16_t offset_standby; /* 14-15 */ 155 uint8_t reserved0[24-16]; /* 16-23 */ 156 struct CPUEntry entries[]; 157 } QEMU_PACKED ReadCpuInfo; 158 159 typedef struct ReadStorageElementInfo { 160 SCCBHeader h; 161 uint16_t max_id; 162 uint16_t assigned; 163 uint16_t standby; 164 uint8_t _reserved0[16 - 14]; /* 14-15 */ 165 uint32_t entries[]; 166 } QEMU_PACKED ReadStorageElementInfo; 167 168 typedef struct AttachStorageElement { 169 SCCBHeader h; 170 uint8_t _reserved0[10 - 8]; /* 8-9 */ 171 uint16_t assigned; 172 uint8_t _reserved1[16 - 12]; /* 12-15 */ 173 uint32_t entries[]; 174 } QEMU_PACKED AttachStorageElement; 175 176 typedef struct AssignStorage { 177 SCCBHeader h; 178 uint16_t rn; 179 } QEMU_PACKED AssignStorage; 180 181 typedef struct IoaCfgSccb { 182 SCCBHeader header; 183 uint8_t atype; 184 uint8_t reserved1; 185 uint16_t reserved2; 186 uint32_t aid; 187 } QEMU_PACKED IoaCfgSccb; 188 189 typedef struct SCCB { 190 SCCBHeader h; 191 char data[]; 192 } QEMU_PACKED SCCB; 193 194 #define TYPE_SCLP "sclp" 195 OBJECT_DECLARE_TYPE(SCLPDevice, SCLPDeviceClass, 196 SCLP) 197 198 struct SCLPEventFacility; 199 200 struct SCLPDevice { 201 /* private */ 202 DeviceState parent_obj; 203 struct SCLPEventFacility *event_facility; 204 int increment_size; 205 206 /* public */ 207 }; 208 209 struct SCLPDeviceClass { 210 /* private */ 211 DeviceClass parent_class; 212 void (*read_SCP_info)(SCLPDevice *sclp, SCCB *sccb); 213 void (*read_cpu_info)(SCLPDevice *sclp, SCCB *sccb); 214 215 /* public */ 216 void (*execute)(SCLPDevice *sclp, SCCB *sccb, uint32_t code); 217 void (*service_interrupt)(SCLPDevice *sclp, uint32_t sccb); 218 }; 219 220 static inline int sccb_data_len(SCCB *sccb) 221 { 222 return be16_to_cpu(sccb->h.length) - sizeof(sccb->h); 223 } 224 225 226 void s390_sclp_init(void); 227 void sclp_service_interrupt(uint32_t sccb); 228 void raise_irq_cpu_hotplug(void); 229 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code); 230 int sclp_service_call_protected(CPUS390XState *env, uint64_t sccb, 231 uint32_t code); 232 233 #endif 234