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_AVAIL_SLOTS 32 39 #define MAX_STORAGE_INCREMENTS 1020 40 41 /* CPU hotplug SCLP codes */ 42 #define SCLP_HAS_CPU_INFO 0x0C00000000000000ULL 43 #define SCLP_CMDW_READ_CPU_INFO 0x00010001 44 #define SCLP_CMDW_CONFIGURE_CPU 0x00110001 45 #define SCLP_CMDW_DECONFIGURE_CPU 0x00100001 46 47 /* SCLP PCI codes */ 48 #define SCLP_HAS_IOA_RECONFIG 0x0000000040000000ULL 49 #define SCLP_CMDW_CONFIGURE_IOA 0x001a0001 50 #define SCLP_CMDW_DECONFIGURE_IOA 0x001b0001 51 #define SCLP_RECONFIG_PCI_ATYPE 2 52 53 /* SCLP response codes */ 54 #define SCLP_RC_NORMAL_READ_COMPLETION 0x0010 55 #define SCLP_RC_NORMAL_COMPLETION 0x0020 56 #define SCLP_RC_SCCB_BOUNDARY_VIOLATION 0x0100 57 #define SCLP_RC_NO_ACTION_REQUIRED 0x0120 58 #define SCLP_RC_INVALID_SCLP_COMMAND 0x01f0 59 #define SCLP_RC_CONTAINED_EQUIPMENT_CHECK 0x0340 60 #define SCLP_RC_INSUFFICIENT_SCCB_LENGTH 0x0300 61 #define SCLP_RC_STANDBY_READ_COMPLETION 0x0410 62 #define SCLP_RC_ADAPTER_IN_RESERVED_STATE 0x05f0 63 #define SCLP_RC_ADAPTER_TYPE_NOT_RECOGNIZED 0x06f0 64 #define SCLP_RC_ADAPTER_ID_NOT_RECOGNIZED 0x09f0 65 #define SCLP_RC_INVALID_FUNCTION 0x40f0 66 #define SCLP_RC_NO_EVENT_BUFFERS_STORED 0x60f0 67 #define SCLP_RC_INVALID_SELECTION_MASK 0x70f0 68 #define SCLP_RC_INCONSISTENT_LENGTHS 0x72f0 69 #define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR 0x73f0 70 #define SCLP_RC_INVALID_MASK_LENGTH 0x74f0 71 72 73 /* Service Call Control Block (SCCB) and its elements */ 74 75 #define SCCB_SIZE 4096 76 77 #define SCLP_VARIABLE_LENGTH_RESPONSE 0x80 78 #define SCLP_EVENT_BUFFER_ACCEPTED 0x80 79 80 #define SCLP_FC_NORMAL_WRITE 0 81 82 /* 83 * Normally packed structures are not the right thing to do, since all code 84 * must take care of endianness. We cannot use ldl_phys and friends for two 85 * reasons, though: 86 * - some of the embedded structures below the SCCB can appear multiple times 87 * at different locations, so there is no fixed offset 88 * - we work on a private copy of the SCCB, since there are several length 89 * fields, that would cause a security nightmare if we allow the guest to 90 * alter the structure while we parse it. We cannot use ldl_p and friends 91 * either without doing pointer arithmetics 92 * So we have to double check that all users of sclp data structures use the 93 * right endianness wrappers. 94 */ 95 typedef struct SCCBHeader { 96 uint16_t length; 97 uint8_t function_code; 98 uint8_t control_mask[3]; 99 uint16_t response_code; 100 } QEMU_PACKED SCCBHeader; 101 102 #define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader)) 103 #define SCCB_CPU_FEATURE_LEN 6 104 105 /* CPU information */ 106 typedef struct CPUEntry { 107 uint8_t address; 108 uint8_t reserved0; 109 uint8_t features[SCCB_CPU_FEATURE_LEN]; 110 uint8_t reserved2[6]; 111 uint8_t type; 112 uint8_t reserved1; 113 } QEMU_PACKED CPUEntry; 114 115 typedef struct ReadInfo { 116 SCCBHeader h; 117 uint16_t rnmax; 118 uint8_t rnsize; 119 uint8_t _reserved1[16 - 11]; /* 11-15 */ 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 struct CPUEntry entries[0]; 138 } QEMU_PACKED ReadInfo; 139 140 typedef struct ReadCpuInfo { 141 SCCBHeader h; 142 uint16_t nr_configured; /* 8-9 */ 143 uint16_t offset_configured; /* 10-11 */ 144 uint16_t nr_standby; /* 12-13 */ 145 uint16_t offset_standby; /* 14-15 */ 146 uint8_t reserved0[24-16]; /* 16-23 */ 147 struct CPUEntry entries[0]; 148 } QEMU_PACKED ReadCpuInfo; 149 150 typedef struct ReadStorageElementInfo { 151 SCCBHeader h; 152 uint16_t max_id; 153 uint16_t assigned; 154 uint16_t standby; 155 uint8_t _reserved0[16 - 14]; /* 14-15 */ 156 uint32_t entries[0]; 157 } QEMU_PACKED ReadStorageElementInfo; 158 159 typedef struct AttachStorageElement { 160 SCCBHeader h; 161 uint8_t _reserved0[10 - 8]; /* 8-9 */ 162 uint16_t assigned; 163 uint8_t _reserved1[16 - 12]; /* 12-15 */ 164 uint32_t entries[0]; 165 } QEMU_PACKED AttachStorageElement; 166 167 typedef struct AssignStorage { 168 SCCBHeader h; 169 uint16_t rn; 170 } QEMU_PACKED AssignStorage; 171 172 typedef struct IoaCfgSccb { 173 SCCBHeader header; 174 uint8_t atype; 175 uint8_t reserved1; 176 uint16_t reserved2; 177 uint32_t aid; 178 } QEMU_PACKED IoaCfgSccb; 179 180 typedef struct SCCB { 181 SCCBHeader h; 182 char data[SCCB_DATA_LEN]; 183 } QEMU_PACKED SCCB; 184 185 #define TYPE_SCLP "sclp" 186 #define SCLP(obj) OBJECT_CHECK(SCLPDevice, (obj), TYPE_SCLP) 187 #define SCLP_CLASS(oc) OBJECT_CLASS_CHECK(SCLPDeviceClass, (oc), TYPE_SCLP) 188 #define SCLP_GET_CLASS(obj) OBJECT_GET_CLASS(SCLPDeviceClass, (obj), TYPE_SCLP) 189 190 typedef struct SCLPEventFacility SCLPEventFacility; 191 192 typedef struct SCLPDevice { 193 /* private */ 194 DeviceState parent_obj; 195 SCLPEventFacility *event_facility; 196 int increment_size; 197 198 /* public */ 199 } SCLPDevice; 200 201 typedef struct SCLPDeviceClass { 202 /* private */ 203 DeviceClass parent_class; 204 void (*read_SCP_info)(SCLPDevice *sclp, SCCB *sccb); 205 void (*read_storage_element0_info)(SCLPDevice *sclp, SCCB *sccb); 206 void (*read_storage_element1_info)(SCLPDevice *sclp, SCCB *sccb); 207 void (*attach_storage_element)(SCLPDevice *sclp, SCCB *sccb, 208 uint16_t element); 209 void (*assign_storage)(SCLPDevice *sclp, SCCB *sccb); 210 void (*unassign_storage)(SCLPDevice *sclp, SCCB *sccb); 211 void (*read_cpu_info)(SCLPDevice *sclp, SCCB *sccb); 212 213 /* public */ 214 void (*execute)(SCLPDevice *sclp, SCCB *sccb, uint32_t code); 215 void (*service_interrupt)(SCLPDevice *sclp, uint32_t sccb); 216 } SCLPDeviceClass; 217 218 typedef struct sclpMemoryHotplugDev sclpMemoryHotplugDev; 219 220 #define TYPE_SCLP_MEMORY_HOTPLUG_DEV "sclp-memory-hotplug-dev" 221 #define SCLP_MEMORY_HOTPLUG_DEV(obj) \ 222 OBJECT_CHECK(sclpMemoryHotplugDev, (obj), TYPE_SCLP_MEMORY_HOTPLUG_DEV) 223 224 struct sclpMemoryHotplugDev { 225 SysBusDevice parent; 226 ram_addr_t standby_mem_size; 227 ram_addr_t padded_ram_size; 228 ram_addr_t pad_size; 229 ram_addr_t standby_subregion_size; 230 ram_addr_t rzm; 231 int increment_size; 232 char *standby_state_map; 233 }; 234 235 static inline int sccb_data_len(SCCB *sccb) 236 { 237 return be16_to_cpu(sccb->h.length) - sizeof(sccb->h); 238 } 239 240 241 void s390_sclp_init(void); 242 sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void); 243 sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void); 244 void sclp_service_interrupt(uint32_t sccb); 245 void raise_irq_cpu_hotplug(void); 246 int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code); 247 248 #endif 249