/* * SCLP Support * * Copyright IBM, Corp. 2012 * * Authors: * Christian Borntraeger * * This work is licensed under the terms of the GNU GPL, version 2 or (at your * option) any later version. See the COPYING file in the top-level directory. * */ #ifndef HW_S390_SCLP_H #define HW_S390_SCLP_H #include #include #define SCLP_CMD_CODE_MASK 0xffff00ff /* SCLP command codes */ #define SCLP_CMDW_READ_SCP_INFO 0x00020001 #define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 #define SCLP_READ_STORAGE_ELEMENT_INFO 0x00040001 #define SCLP_ATTACH_STORAGE_ELEMENT 0x00080001 #define SCLP_ASSIGN_STORAGE 0x000D0001 #define SCLP_UNASSIGN_STORAGE 0x000C0001 #define SCLP_CMD_READ_EVENT_DATA 0x00770005 #define SCLP_CMD_WRITE_EVENT_DATA 0x00760005 #define SCLP_CMD_WRITE_EVENT_MASK 0x00780005 /* SCLP Memory hotplug codes */ #define SCLP_FC_ASSIGN_ATTACH_READ_STOR 0xE00000000000ULL #define SCLP_STARTING_SUBINCREMENT_ID 0x10001 #define SCLP_INCREMENT_UNIT 0x10000 #define MAX_AVAIL_SLOTS 32 #define MAX_STORAGE_INCREMENTS 1020 /* CPU hotplug SCLP codes */ #define SCLP_HAS_CPU_INFO 0x0C00000000000000ULL #define SCLP_CMDW_READ_CPU_INFO 0x00010001 #define SCLP_CMDW_CONFIGURE_CPU 0x00110001 #define SCLP_CMDW_DECONFIGURE_CPU 0x00100001 /* SCLP response codes */ #define SCLP_RC_NORMAL_READ_COMPLETION 0x0010 #define SCLP_RC_NORMAL_COMPLETION 0x0020 #define SCLP_RC_SCCB_BOUNDARY_VIOLATION 0x0100 #define SCLP_RC_INVALID_SCLP_COMMAND 0x01f0 #define SCLP_RC_CONTAINED_EQUIPMENT_CHECK 0x0340 #define SCLP_RC_INSUFFICIENT_SCCB_LENGTH 0x0300 #define SCLP_RC_STANDBY_READ_COMPLETION 0x0410 #define SCLP_RC_INVALID_FUNCTION 0x40f0 #define SCLP_RC_NO_EVENT_BUFFERS_STORED 0x60f0 #define SCLP_RC_INVALID_SELECTION_MASK 0x70f0 #define SCLP_RC_INCONSISTENT_LENGTHS 0x72f0 #define SCLP_RC_EVENT_BUFFER_SYNTAX_ERROR 0x73f0 #define SCLP_RC_INVALID_MASK_LENGTH 0x74f0 /* Service Call Control Block (SCCB) and its elements */ #define SCCB_SIZE 4096 #define SCLP_VARIABLE_LENGTH_RESPONSE 0x80 #define SCLP_EVENT_BUFFER_ACCEPTED 0x80 #define SCLP_FC_NORMAL_WRITE 0 /* * Normally packed structures are not the right thing to do, since all code * must take care of endianness. We cannot use ldl_phys and friends for two * reasons, though: * - some of the embedded structures below the SCCB can appear multiple times * at different locations, so there is no fixed offset * - we work on a private copy of the SCCB, since there are several length * fields, that would cause a security nightmare if we allow the guest to * alter the structure while we parse it. We cannot use ldl_p and friends * either without doing pointer arithmetics * So we have to double check that all users of sclp data structures use the * right endianness wrappers. */ typedef struct SCCBHeader { uint16_t length; uint8_t function_code; uint8_t control_mask[3]; uint16_t response_code; } QEMU_PACKED SCCBHeader; #define SCCB_DATA_LEN (SCCB_SIZE - sizeof(SCCBHeader)) /* CPU information */ typedef struct CPUEntry { uint8_t address; uint8_t reserved0[13]; uint8_t type; uint8_t reserved1; } QEMU_PACKED CPUEntry; typedef struct ReadInfo { SCCBHeader h; uint16_t rnmax; uint8_t rnsize; uint8_t _reserved1[16 - 11]; /* 11-15 */ uint16_t entries_cpu; /* 16-17 */ uint16_t offset_cpu; /* 18-19 */ uint8_t _reserved2[24 - 20]; /* 20-23 */ uint8_t loadparm[8]; /* 24-31 */ uint8_t _reserved3[48 - 32]; /* 32-47 */ uint64_t facilities; /* 48-55 */ uint8_t _reserved0[100 - 56]; uint32_t rnsize2; uint64_t rnmax2; uint8_t _reserved4[120-112]; /* 112-119 */ uint16_t highest_cpu; uint8_t _reserved5[128 - 122]; /* 122-127 */ struct CPUEntry entries[0]; } QEMU_PACKED ReadInfo; typedef struct ReadCpuInfo { SCCBHeader h; uint16_t nr_configured; /* 8-9 */ uint16_t offset_configured; /* 10-11 */ uint16_t nr_standby; /* 12-13 */ uint16_t offset_standby; /* 14-15 */ uint8_t reserved0[24-16]; /* 16-23 */ struct CPUEntry entries[0]; } QEMU_PACKED ReadCpuInfo; typedef struct ReadStorageElementInfo { SCCBHeader h; uint16_t max_id; uint16_t assigned; uint16_t standby; uint8_t _reserved0[16 - 14]; /* 14-15 */ uint32_t entries[0]; } QEMU_PACKED ReadStorageElementInfo; typedef struct AttachStorageElement { SCCBHeader h; uint8_t _reserved0[10 - 8]; /* 8-9 */ uint16_t assigned; uint8_t _reserved1[16 - 12]; /* 12-15 */ uint32_t entries[0]; } QEMU_PACKED AttachStorageElement; typedef struct AssignStorage { SCCBHeader h; uint16_t rn; } QEMU_PACKED AssignStorage; typedef struct SCCB { SCCBHeader h; char data[SCCB_DATA_LEN]; } QEMU_PACKED SCCB; typedef struct sclpMemoryHotplugDev sclpMemoryHotplugDev; #define TYPE_SCLP_MEMORY_HOTPLUG_DEV "sclp-memory-hotplug-dev" #define SCLP_MEMORY_HOTPLUG_DEV(obj) \ OBJECT_CHECK(sclpMemoryHotplugDev, (obj), TYPE_SCLP_MEMORY_HOTPLUG_DEV) struct sclpMemoryHotplugDev { SysBusDevice parent; ram_addr_t standby_mem_size; ram_addr_t padded_ram_size; ram_addr_t pad_size; ram_addr_t standby_subregion_size; ram_addr_t rzm; int increment_size; char *standby_state_map; }; static inline int sccb_data_len(SCCB *sccb) { return be16_to_cpu(sccb->h.length) - sizeof(sccb->h); } void s390_sclp_init(void); sclpMemoryHotplugDev *init_sclp_memory_hotplug_dev(void); sclpMemoryHotplugDev *get_sclp_memory_hotplug_dev(void); void sclp_service_interrupt(uint32_t sccb); void raise_irq_cpu_hotplug(void); #endif