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_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 arithmetics 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)) 100 101 /* CPU information */ 102 typedef struct CPUEntry { 103 uint8_t address; 104 uint8_t reserved0[13]; 105 uint8_t type; 106 uint8_t reserved1; 107 } QEMU_PACKED CPUEntry; 108 109 typedef struct ReadInfo { 110 SCCBHeader h; 111 uint16_t rnmax; 112 uint8_t rnsize; 113 uint8_t _reserved1[16 - 11]; /* 11-15 */ 114 uint16_t entries_cpu; /* 16-17 */ 115 uint16_t offset_cpu; /* 18-19 */ 116 uint8_t _reserved2[24 - 20]; /* 20-23 */ 117 uint8_t loadparm[8]; /* 24-31 */ 118 uint8_t _reserved3[48 - 32]; /* 32-47 */ 119 uint64_t facilities; /* 48-55 */ 120 uint8_t _reserved0[100 - 56]; 121 uint32_t rnsize2; 122 uint64_t rnmax2; 123 uint8_t _reserved4[120-112]; /* 112-119 */ 124 uint16_t highest_cpu; 125 uint8_t _reserved5[128 - 122]; /* 122-127 */ 126 struct CPUEntry entries[0]; 127 } QEMU_PACKED ReadInfo; 128 129 typedef struct ReadCpuInfo { 130 SCCBHeader h; 131 uint16_t nr_configured; /* 8-9 */ 132 uint16_t offset_configured; /* 10-11 */ 133 uint16_t nr_standby; /* 12-13 */ 134 uint16_t offset_standby; /* 14-15 */ 135 uint8_t reserved0[24-16]; /* 16-23 */ 136 struct CPUEntry entries[0]; 137 } QEMU_PACKED ReadCpuInfo; 138 139 typedef struct ReadStorageElementInfo { 140 SCCBHeader h; 141 uint16_t max_id; 142 uint16_t assigned; 143 uint16_t standby; 144 uint8_t _reserved0[16 - 14]; /* 14-15 */ 145 uint32_t entries[0]; 146 } QEMU_PACKED ReadStorageElementInfo; 147 148 typedef struct AttachStorageElement { 149 SCCBHeader h; 150 uint8_t _reserved0[10 - 8]; /* 8-9 */ 151 uint16_t assigned; 152 uint8_t _reserved1[16 - 12]; /* 12-15 */ 153 uint32_t entries[0]; 154 } QEMU_PACKED AttachStorageElement; 155 156 typedef struct AssignStorage { 157 SCCBHeader h; 158 uint16_t rn; 159 } QEMU_PACKED AssignStorage; 160 161 typedef struct SCCB { 162 SCCBHeader h; 163 char data[SCCB_DATA_LEN]; 164 } QEMU_PACKED SCCB; 165 166 typedef struct sclpMemoryHotplugDev sclpMemoryHotplugDev; 167 168 #define TYPE_SCLP_MEMORY_HOTPLUG_DEV "sclp-memory-hotplug-dev" 169 #define SCLP_MEMORY_HOTPLUG_DEV(obj) \ 170 OBJECT_CHECK(sclpMemoryHotplugDev, (obj), TYPE_SCLP_MEMORY_HOTPLUG_DEV) 171 172 struct sclpMemoryHotplugDev { 173 SysBusDevice parent; 174 ram_addr_t standby_mem_size; 175 ram_addr_t padded_ram_size; 176 ram_addr_t pad_size; 177 ram_addr_t standby_subregion_size; 178 ram_addr_t rzm; 179 int increment_size; 180 char *standby_state_map; 181 }; 182 183 static inline int sccb_data_len(SCCB *sccb) 184 { 185 return be16_to_cpu(sccb->h.length) - sizeof(sccb->h); 186 } 187 188 189 void s390_sclp_init(void); 190 sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void); 191 sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void); 192 void sclp_service_interrupt(uint32_t sccb); 193 void raise_irq_cpu_hotplug(void); 194 195 #endif 196