appldata.h

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/*
 * Copyright IBM Corp. 2006
 *
 * Author(s): Melissa Howland <[email protected]>
 */

#ifndef _ASM_S390_APPLDATA_H
#define _ASM_S390_APPLDATA_H

#include <asm/io.h>

#ifndef CONFIG_64BIT

#define APPLDATA_START_INTERVAL_REC 0x00    /* Function codes for */
#define APPLDATA_STOP_REC       0x01    /* DIAG 0xDC          */
#define APPLDATA_GEN_EVENT_REC      0x02
#define APPLDATA_START_CONFIG_REC   0x03

/*
 * Parameter list for DIAGNOSE X'DC'
 */
struct appldata_parameter_list {
    u16 diag;       /* The DIAGNOSE code X'00DC'          */
    u8  function;       /* The function code for the DIAGNOSE */
    u8  parlist_length; /* Length of the parameter list       */
    u32 product_id_addr;    /* Address of the 16-byte product ID  */
    u16 reserved;
    u16 buffer_length;  /* Length of the application data buffer  */
    u32 buffer_addr;    /* Address of the application data buffer */
} __attribute__ ((packed));

#else /* CONFIG_64BIT */

#define APPLDATA_START_INTERVAL_REC 0x80
#define APPLDATA_STOP_REC       0x81
#define APPLDATA_GEN_EVENT_REC      0x82
#define APPLDATA_START_CONFIG_REC   0x83

/*
 * Parameter list for DIAGNOSE X'DC'
 */
struct appldata_parameter_list {
    u16 diag;
    u8  function;
    u8  parlist_length;
    u32 unused01;
    u16 reserved;
    u16 buffer_length;
    u32 unused02;
    u64 product_id_addr;
    u64 buffer_addr;
} __attribute__ ((packed));

#endif /* CONFIG_64BIT */

struct appldata_product_id {
    char prod_nr[7];    /* product number */
    u16  prod_fn;       /* product function */
    u8   record_nr;     /* record number */
    u16  version_nr;    /* version */
    u16  release_nr;    /* release */
    u16  mod_lvl;       /* modification level */
} __attribute__ ((packed));

static inline int appldata_asm(struct appldata_product_id *id,
                   unsigned short fn, void *buffer,
                   unsigned short length)
{
    struct appldata_parameter_list parm_list;
    int ry;

    if (!MACHINE_IS_VM)
        return -EOPNOTSUPP;
    parm_list.diag = 0xdc;
    parm_list.function = fn;
    parm_list.parlist_length = sizeof(parm_list);
    parm_list.buffer_length = length;
    parm_list.product_id_addr = (unsigned long) id;
    parm_list.buffer_addr = virt_to_phys(buffer);
    asm volatile(
        "   diag    %1,%0,0xdc"
        : "=d" (ry)
        : "d" (&parm_list), "m" (parm_list), "m" (*id)
        : "cc");
    return ry;
}

#endif /* _ASM_S390_APPLDATA_H */