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 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_AVAIL_SLOTS 32 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_PCI_RECONFIG 0x0000000040000000ULL 48 #define SCLP_CMDW_CONFIGURE_PCI 0x001a0001 49 #define SCLP_CMDW_DECONFIGURE_PCI 0x001b0001 50 #define SCLP_RECONFIG_PCI_ATPYE 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_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)) 101 102 /* CPU information */ 103 typedef struct CPUEntry { 104 uint8_t address; 105 uint8_t reserved0[13]; 106 uint8_t type; 107 uint8_t reserved1; 108 } QEMU_PACKED CPUEntry; 109 110 typedef struct ReadInfo { 111 SCCBHeader h; 112 uint16_t rnmax; 113 uint8_t rnsize; 114 uint8_t _reserved1[16 - 11]; /* 11-15 */ 115 uint16_t entries_cpu; /* 16-17 */ 116 uint16_t offset_cpu; /* 18-19 */ 117 uint8_t _reserved2[24 - 20]; /* 20-23 */ 118 uint8_t loadparm[8]; /* 24-31 */ 119 uint8_t _reserved3[48 - 32]; /* 32-47 */ 120 uint64_t facilities; /* 48-55 */ 121 uint8_t _reserved0[100 - 56]; 122 uint32_t rnsize2; 123 uint64_t rnmax2; 124 uint8_t _reserved4[120-112]; /* 112-119 */ 125 uint16_t highest_cpu; 126 uint8_t _reserved5[128 - 122]; /* 122-127 */ 127 struct CPUEntry entries[0]; 128 } QEMU_PACKED ReadInfo; 129 130 typedef struct ReadCpuInfo { 131 SCCBHeader h; 132 uint16_t nr_configured; /* 8-9 */ 133 uint16_t offset_configured; /* 10-11 */ 134 uint16_t nr_standby; /* 12-13 */ 135 uint16_t offset_standby; /* 14-15 */ 136 uint8_t reserved0[24-16]; /* 16-23 */ 137 struct CPUEntry entries[0]; 138 } QEMU_PACKED ReadCpuInfo; 139 140 typedef struct ReadStorageElementInfo { 141 SCCBHeader h; 142 uint16_t max_id; 143 uint16_t assigned; 144 uint16_t standby; 145 uint8_t _reserved0[16 - 14]; /* 14-15 */ 146 uint32_t entries[0]; 147 } QEMU_PACKED ReadStorageElementInfo; 148 149 typedef struct AttachStorageElement { 150 SCCBHeader h; 151 uint8_t _reserved0[10 - 8]; /* 8-9 */ 152 uint16_t assigned; 153 uint8_t _reserved1[16 - 12]; /* 12-15 */ 154 uint32_t entries[0]; 155 } QEMU_PACKED AttachStorageElement; 156 157 typedef struct AssignStorage { 158 SCCBHeader h; 159 uint16_t rn; 160 } QEMU_PACKED AssignStorage; 161 162 typedef struct SCCB { 163 SCCBHeader h; 164 char data[SCCB_DATA_LEN]; 165 } QEMU_PACKED SCCB; 166 167 #define TYPE_SCLP "sclp" 168 #define SCLP(obj) OBJECT_CHECK(SCLPDevice, (obj), TYPE_SCLP) 169 #define SCLP_CLASS(oc) OBJECT_CLASS_CHECK(SCLPDeviceClass, (oc), TYPE_SCLP) 170 #define SCLP_GET_CLASS(obj) OBJECT_GET_CLASS(SCLPDeviceClass, (obj), TYPE_SCLP) 171 172 typedef struct SCLPEventFacility SCLPEventFacility; 173 174 typedef struct SCLPDevice { 175 /* private */ 176 DeviceState parent_obj; 177 SCLPEventFacility *event_facility; 178 int increment_size; 179 180 /* public */ 181 } SCLPDevice; 182 183 typedef struct SCLPDeviceClass { 184 /* private */ 185 DeviceClass parent_class; 186 void (*read_SCP_info)(SCLPDevice *sclp, SCCB *sccb); 187 void (*read_storage_element0_info)(SCLPDevice *sclp, SCCB *sccb); 188 void (*read_storage_element1_info)(SCLPDevice *sclp, SCCB *sccb); 189 void (*attach_storage_element)(SCLPDevice *sclp, SCCB *sccb, 190 uint16_t element); 191 void (*assign_storage)(SCLPDevice *sclp, SCCB *sccb); 192 void (*unassign_storage)(SCLPDevice *sclp, SCCB *sccb); 193 void (*read_cpu_info)(SCLPDevice *sclp, SCCB *sccb); 194 195 /* public */ 196 void (*execute)(SCLPDevice *sclp, SCCB *sccb, uint32_t code); 197 void (*service_interrupt)(SCLPDevice *sclp, uint32_t sccb); 198 } SCLPDeviceClass; 199 200 typedef struct sclpMemoryHotplugDev sclpMemoryHotplugDev; 201 202 #define TYPE_SCLP_MEMORY_HOTPLUG_DEV "sclp-memory-hotplug-dev" 203 #define SCLP_MEMORY_HOTPLUG_DEV(obj) \ 204 OBJECT_CHECK(sclpMemoryHotplugDev, (obj), TYPE_SCLP_MEMORY_HOTPLUG_DEV) 205 206 struct sclpMemoryHotplugDev { 207 SysBusDevice parent; 208 ram_addr_t standby_mem_size; 209 ram_addr_t padded_ram_size; 210 ram_addr_t pad_size; 211 ram_addr_t standby_subregion_size; 212 ram_addr_t rzm; 213 int increment_size; 214 char *standby_state_map; 215 }; 216 217 static inline int sccb_data_len(SCCB *sccb) 218 { 219 return be16_to_cpu(sccb->h.length) - sizeof(sccb->h); 220 } 221 222 223 void s390_sclp_init(void); 224 sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void); 225 sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void); 226 void sclp_service_interrupt(uint32_t sccb); 227 void raise_irq_cpu_hotplug(void); 228 229 #endif 230