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/*
* SCLP Support
*
* Copyright IBM, Corp. 2012
*
* Authors:
* Christian Borntraeger <borntraeger@de.ibm.com>
*
* 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 <hw/sysbus.h>
#include <hw/qdev.h>
#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_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
/* 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;
static inline int sccb_data_len(SCCB *sccb)
{
return be16_to_cpu(sccb->h.length) - sizeof(sccb->h);
}
void s390_sclp_init(void);
void sclp_service_interrupt(uint32_t sccb);
void raise_irq_cpu_hotplug(void);
#endif
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