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 0x0800000000000000ULL 42 #define SCLP_CMDW_READ_CPU_INFO 0x00010001 43 44 /* SCLP PCI codes */ 45 #define SCLP_HAS_IOA_RECONFIG 0x0000000040000000ULL 46 #define SCLP_CMDW_CONFIGURE_IOA 0x001a0001 47 #define SCLP_CMDW_DECONFIGURE_IOA 0x001b0001 48 #define SCLP_RECONFIG_PCI_ATYPE 2 49 50 /* SCLP response codes */ 51 #define SCLP_RC_NORMAL_READ_COMPLETION 0x0010 52 #define SCLP_RC_NORMAL_COMPLETION 0x0020 53 #define SCLP_RC_SCCB_BOUNDARY_VIOLATION 0x0100 54 #define SCLP_RC_NO_ACTION_REQUIRED 0x0120 55 #define SCLP_RC_INVALID_SCLP_COMMAND 0x01f0 56 #define SCLP_RC_CONTAINED_EQUIPMENT_CHECK 0x0340 57 #define SCLP_RC_INSUFFICIENT_SCCB_LENGTH 0x0300 58 #define SCLP_RC_STANDBY_READ_COMPLETION 0x0410 59 #define SCLP_RC_ADAPTER_IN_RESERVED_STATE 0x05f0 60 #define SCLP_RC_ADAPTER_TYPE_NOT_RECOGNIZED 0x06f0 61 #define SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED 0x09f0 62 #define SCLP_RC_INVALID_FUNCTION 0x40f0 63 #define SCLP_RC_NO_EVENT_BUFFERS_STORED 0x60f0 64 #define SCLP_RC_INVALID_SELECTION_MASK 0x70f0 65 #define SCLP_RC_INCONSISTENT_LENGTHS 0x72f0 66 #define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR 0x73f0 67 #define SCLP_RC_INVALID_MASK_LENGTH 0x74f0 68 69 70 /* Service Call Control Block (SCCB) and its elements */ 71 72 #define SCCB_SIZE 4096 73 74 #define SCLP_VARIABLE_LENGTH_RESPONSE 0x80 75 #define SCLP_EVENT_BUFFER_ACCEPTED 0x80 76 77 #define SCLP_FC_NORMAL_WRITE 0 78 79 /* 80 * Normally packed structures are not the right thing to do, since all code 81 * must take care of endianness. We cannot use ldl_phys and friends for two 82 * reasons, though: 83 * - some of the embedded structures below the SCCB can appear multiple times 84 * at different locations, so there is no fixed offset 85 * - we work on a private copy of the SCCB, since there are several length 86 * fields, that would cause a security nightmare if we allow the guest to 87 * alter the structure while we parse it. We cannot use ldl_p and friends 88 * either without doing pointer arithmetic 89 * So we have to double check that all users of sclp data structures use the 90 * right endianness wrappers. 91 */ 92 typedef struct SCCBHeader { 93 uint16_t length; 94 uint8_t function_code; 95 uint8_t control_mask[3]; 96 uint16_t response_code; 97 } QEMU_PACKED SCCBHeader; 98 99 #define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader)) 100 #define SCCB_CPU_FEATURE_LEN 6 101 102 /* CPU information */ 103 typedef struct CPUEntry { 104 uint8_t address; 105 uint8_t reserved0; 106 uint8_t features[SCCB_CPU_FEATURE_LEN]; 107 uint8_t reserved2[6]; 108 uint8_t type; 109 uint8_t reserved1; 110 } QEMU_PACKED CPUEntry; 111 112 #define SCLP_READ_SCP_INFO_FIXED_CPU_OFFSET 128 113 #define SCLP_READ_SCP_INFO_MNEST 4 114 typedef struct ReadInfo { 115 SCCBHeader h; 116 uint16_t rnmax; 117 uint8_t rnsize; 118 uint8_t _reserved1[15 - 11]; /* 11-14 */ 119 uint8_t stsi_parm; /* 15-15 */ 120 uint16_t entries_cpu; /* 16-17 */ 121 uint16_t offset_cpu; /* 18-19 */ 122 uint8_t _reserved2[24 - 20]; /* 20-23 */ 123 uint8_t loadparm[8]; /* 24-31 */ 124 uint8_t _reserved3[48 - 32]; /* 32-47 */ 125 uint64_t facilities; /* 48-55 */ 126 uint8_t _reserved0[76 - 56]; /* 56-75 */ 127 uint32_t ibc_val; 128 uint8_t conf_char[99 - 80]; /* 80-98 */ 129 uint8_t mha_pow; 130 uint32_t rnsize2; 131 uint64_t rnmax2; 132 uint8_t _reserved6[116 - 112]; /* 112-115 */ 133 uint8_t conf_char_ext[120 - 116]; /* 116-119 */ 134 uint16_t highest_cpu; 135 uint8_t _reserved5[124 - 122]; /* 122-123 */ 136 uint32_t hmfai; 137 uint8_t _reserved7[134 - 128]; /* 128-133 */ 138 uint8_t fac134; 139 uint8_t _reserved8[144 - 135]; /* 135-143 */ 140 struct CPUEntry entries[]; 141 /* 142 * When the Extended-Length SCCB (ELS) feature is enabled the 143 * start of the entries field begins at an offset denoted by the 144 * offset_cpu field, otherwise it's at an offset of 128. 145 */ 146 } QEMU_PACKED ReadInfo; 147 148 typedef struct ReadCpuInfo { 149 SCCBHeader h; 150 uint16_t nr_configured; /* 8-9 */ 151 uint16_t offset_configured; /* 10-11 */ 152 uint16_t nr_standby; /* 12-13 */ 153 uint16_t offset_standby; /* 14-15 */ 154 uint8_t reserved0[24-16]; /* 16-23 */ 155 struct CPUEntry entries[]; 156 } QEMU_PACKED ReadCpuInfo; 157 158 typedef struct ReadStorageElementInfo { 159 SCCBHeader h; 160 uint16_t max_id; 161 uint16_t assigned; 162 uint16_t standby; 163 uint8_t _reserved0[16 - 14]; /* 14-15 */ 164 uint32_t entries[]; 165 } QEMU_PACKED ReadStorageElementInfo; 166 167 typedef struct AttachStorageElement { 168 SCCBHeader h; 169 uint8_t _reserved0[10 - 8]; /* 8-9 */ 170 uint16_t assigned; 171 uint8_t _reserved1[16 - 12]; /* 12-15 */ 172 uint32_t entries[]; 173 } QEMU_PACKED AttachStorageElement; 174 175 typedef struct AssignStorage { 176 SCCBHeader h; 177 uint16_t rn; 178 } QEMU_PACKED AssignStorage; 179 180 typedef struct IoaCfgSccb { 181 SCCBHeader header; 182 uint8_t atype; 183 uint8_t reserved1; 184 uint16_t reserved2; 185 uint32_t aid; 186 } QEMU_PACKED IoaCfgSccb; 187 188 typedef struct SCCB { 189 SCCBHeader h; 190 char data[]; 191 } QEMU_PACKED SCCB; 192 193 #define TYPE_SCLP "sclp" 194 OBJECT_DECLARE_TYPE(SCLPDevice, SCLPDeviceClass, 195 SCLP) 196 197 struct SCLPEventFacility; 198 199 struct SCLPDevice { 200 /* private */ 201 DeviceState parent_obj; 202 struct SCLPEventFacility *event_facility; 203 int increment_size; 204 205 /* public */ 206 }; 207 208 struct SCLPDeviceClass { 209 /* private */ 210 DeviceClass parent_class; 211 void (*read_SCP_info)(SCLPDevice *sclp, SCCB *sccb); 212 void (*read_cpu_info)(SCLPDevice *sclp, SCCB *sccb); 213 214 /* public */ 215 void (*execute)(SCLPDevice *sclp, SCCB *sccb, uint32_t code); 216 void (*service_interrupt)(SCLPDevice *sclp, uint32_t sccb); 217 }; 218 219 static inline int sccb_data_len(SCCB *sccb) 220 { 221 return be16_to_cpu(sccb->h.length) - sizeof(sccb->h); 222 } 223 224 225 void s390_sclp_init(void); 226 void sclp_service_interrupt(uint32_t sccb); 227 void raise_irq_cpu_hotplug(void); 228 int sclp_service_call(S390CPU *cpu, uint64_t sccb, uint32_t code); 229 int sclp_service_call_protected(S390CPU *cpu, uint64_t sccb, uint32_t code); 230 231 #endif 232