include/asm-s390/sclp.h

   1 /*
   2  *  include/asm-s390/sclp.h
   3  *
   4  *    Copyright IBM Corp. 2007
   5  *    Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
   6  */
   7
   8 #ifndef _ASM_S390_SCLP_H
   9 #define _ASM_S390_SCLP_H
  10
  11 #include <linux/types.h>
  12
  13 struct sccb_header {
  14         u16     length;
  15         u8      function_code;
  16         u8      control_mask[3];
  17         u16     response_code;
  18 } __attribute__((packed));
  19
  20 #define LOADPARM_LEN 8
  21
  22 struct sclp_readinfo_sccb {
  23         struct  sccb_header header;     /* 0-7 */
  24         u16     rnmax;                  /* 8-9 */
  25         u8      rnsize;                 /* 10 */
  26         u8      _reserved0[24 - 11];    /* 11-23 */
  27         u8      loadparm[LOADPARM_LEN]; /* 24-31 */
  28         u8      _reserved1[91 - 32];    /* 32-90 */
  29         u8      flags;                  /* 91 */
  30         u8      _reserved2[100 - 92];   /* 92-99 */
  31         u32     rnsize2;                /* 100-103 */
  32         u64     rnmax2;                 /* 104-111 */
  33         u8      _reserved3[4096 - 112]; /* 112-4095 */
  34 } __attribute__((packed, aligned(4096)));
  35
  36 extern struct sclp_readinfo_sccb s390_readinfo_sccb;
  37 extern void sclp_readinfo_early(void);
  38
  39 #endif /* _ASM_S390_SCLP_H */