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_READ_EVENT_DATA 0x00770005 32 #define SCLP_CMD_WRITE_EVENT_DATA 0x00760005 33 #define SCLP_CMD_WRITE_EVENT_MASK 0x00780005 34 35 /* SCLP Memory hotplug codes */ 36 #define SCLP_FC_ASSIGN_ATTACH_READ_STOR 0xE00000000000ULL 37 #define SCLP_STARTING_SUBINCREMENT_ID 0x10001 38 #define SCLP_INCREMENT_UNIT 0x10000 39 #define MAX_AVAIL_SLOTS 32 40 #define MAX_STORAGE_INCREMENTS 1020 41 42 /* CPU hotplug SCLP codes */ 43 #define SCLP_HAS_CPU_INFO 0x0C00000000000000ULL 44 #define SCLP_CMDW_READ_CPU_INFO 0x00010001 45 #define SCLP_CMDW_CONFIGURE_CPU 0x00110001 46 #define SCLP_CMDW_DECONFIGURE_CPU 0x00100001 47 48 /* SCLP response codes */ 49 #define SCLP_RC_NORMAL_READ_COMPLETION 0x0010 50 #define SCLP_RC_NORMAL_COMPLETION 0x0020 51 #define SCLP_RC_SCCB_BOUNDARY_VIOLATION 0x0100 52 #define SCLP_RC_INVALID_SCLP_COMMAND 0x01f0 53 #define SCLP_RC_CONTAINED_EQUIPMENT_CHECK 0x0340 54 #define SCLP_RC_INSUFFICIENT_SCCB_LENGTH 0x0300 55 #define SCLP_RC_STANDBY_READ_COMPLETION 0x0410 56 #define SCLP_RC_INVALID_FUNCTION 0x40f0 57 #define SCLP_RC_NO_EVENT_BUFFERS_STORED 0x60f0 58 #define SCLP_RC_INVALID_SELECTION_MASK 0x70f0 59 #define SCLP_RC_INCONSISTENT_LENGTHS 0x72f0 60 #define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR 0x73f0 61 #define SCLP_RC_INVALID_MASK_LENGTH 0x74f0 62 63 64 /* Service Call Control Block (SCCB) and its elements */ 65 66 #define SCCB_SIZE 4096 67 68 #define SCLP_VARIABLE_LENGTH_RESPONSE 0x80 69 #define SCLP_EVENT_BUFFER_ACCEPTED 0x80 70 71 #define SCLP_FC_NORMAL_WRITE 0 72 73 /* 74 * Normally packed structures are not the right thing to do, since all code 75 * must take care of endianness. We cannot use ldl_phys and friends for two 76 * reasons, though: 77 * - some of the embedded structures below the SCCB can appear multiple times 78 * at different locations, so there is no fixed offset 79 * - we work on a private copy of the SCCB, since there are several length 80 * fields, that would cause a security nightmare if we allow the guest to 81 * alter the structure while we parse it. We cannot use ldl_p and friends 82 * either without doing pointer arithmetics 83 * So we have to double check that all users of sclp data structures use the 84 * right endianness wrappers. 85 */ 86 typedef struct SCCBHeader { 87 uint16_t length; 88 uint8_t function_code; 89 uint8_t control_mask[3]; 90 uint16_t response_code; 91 } QEMU_PACKED SCCBHeader; 92 93 #define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader)) 94 95 /* CPU information */ 96 typedef struct CPUEntry { 97 uint8_t address; 98 uint8_t reserved0[13]; 99 uint8_t type; 100 uint8_t reserved1; 101 } QEMU_PACKED CPUEntry; 102 103 typedef struct ReadInfo { 104 SCCBHeader h; 105 uint16_t rnmax; 106 uint8_t rnsize; 107 uint8_t _reserved1[16 - 11]; /* 11-15 */ 108 uint16_t entries_cpu; /* 16-17 */ 109 uint16_t offset_cpu; /* 18-19 */ 110 uint8_t _reserved2[24 - 20]; /* 20-23 */ 111 uint8_t loadparm[8]; /* 24-31 */ 112 uint8_t _reserved3[48 - 32]; /* 32-47 */ 113 uint64_t facilities; /* 48-55 */ 114 uint8_t _reserved0[100 - 56]; 115 uint32_t rnsize2; 116 uint64_t rnmax2; 117 uint8_t _reserved4[120-112]; /* 112-119 */ 118 uint16_t highest_cpu; 119 uint8_t _reserved5[128 - 122]; /* 122-127 */ 120 struct CPUEntry entries[0]; 121 } QEMU_PACKED ReadInfo; 122 123 typedef struct ReadCpuInfo { 124 SCCBHeader h; 125 uint16_t nr_configured; /* 8-9 */ 126 uint16_t offset_configured; /* 10-11 */ 127 uint16_t nr_standby; /* 12-13 */ 128 uint16_t offset_standby; /* 14-15 */ 129 uint8_t reserved0[24-16]; /* 16-23 */ 130 struct CPUEntry entries[0]; 131 } QEMU_PACKED ReadCpuInfo; 132 133 typedef struct ReadStorageElementInfo { 134 SCCBHeader h; 135 uint16_t max_id; 136 uint16_t assigned; 137 uint16_t standby; 138 uint8_t _reserved0[16 - 14]; /* 14-15 */ 139 uint32_t entries[0]; 140 } QEMU_PACKED ReadStorageElementInfo; 141 142 typedef struct AttachStorageElement { 143 SCCBHeader h; 144 uint8_t _reserved0[10 - 8]; /* 8-9 */ 145 uint16_t assigned; 146 uint8_t _reserved1[16 - 12]; /* 12-15 */ 147 uint32_t entries[0]; 148 } QEMU_PACKED AttachStorageElement; 149 150 typedef struct AssignStorage { 151 SCCBHeader h; 152 uint16_t rn; 153 } QEMU_PACKED AssignStorage; 154 155 typedef struct SCCB { 156 SCCBHeader h; 157 char data[SCCB_DATA_LEN]; 158 } QEMU_PACKED SCCB; 159 160 typedef struct sclpMemoryHotplugDev sclpMemoryHotplugDev; 161 162 #define TYPE_SCLP_MEMORY_HOTPLUG_DEV "sclp-memory-hotplug-dev" 163 #define SCLP_MEMORY_HOTPLUG_DEV(obj) \ 164 OBJECT_CHECK(sclpMemoryHotplugDev, (obj), TYPE_SCLP_MEMORY_HOTPLUG_DEV) 165 166 struct sclpMemoryHotplugDev { 167 SysBusDevice parent; 168 ram_addr_t standby_mem_size; 169 ram_addr_t padded_ram_size; 170 ram_addr_t pad_size; 171 ram_addr_t standby_subregion_size; 172 ram_addr_t rzm; 173 int increment_size; 174 char *standby_state_map; 175 }; 176 177 static inline int sccb_data_len(SCCB *sccb) 178 { 179 return be16_to_cpu(sccb->h.length) - sizeof(sccb->h); 180 } 181 182 183 void s390_sclp_init(void); 184 sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void); 185 sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void); 186 void sclp_service_interrupt(uint32_t sccb); 187 void raise_irq_cpu_hotplug(void); 188 189 #endif 190