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 #include <asm/chpid.h>
  13
  14 struct sccb_header {
  15         u16     length;
  16         u8      function_code;
  17         u8      control_mask[3];
  18         u16     response_code;
  19 } __attribute__((packed));
  20
  21 #define LOADPARM_LEN 8
  22
  23 struct sclp_readinfo_sccb {
  24         struct  sccb_header header;     /* 0-7 */
  25         u16     rnmax;                  /* 8-9 */
  26         u8      rnsize;                 /* 10 */
  27         u8      _reserved0[24 - 11];    /* 11-23 */
  28         u8      loadparm[LOADPARM_LEN]; /* 24-31 */
  29         u8      _reserved1[91 - 32];    /* 32-90 */
  30         u8      flags;                  /* 91 */
  31         u8      _reserved2[100 - 92];   /* 92-99 */
  32         u32     rnsize2;                /* 100-103 */
  33         u64     rnmax2;                 /* 104-111 */
  34         u8      _reserved3[4096 - 112]; /* 112-4095 */
  35 } __attribute__((packed, aligned(4096)));
  36
  37 #define SCLP_CHP_INFO_MASK_SIZE         32
  38
  39 struct sclp_chp_info {
  40         u8 recognized[SCLP_CHP_INFO_MASK_SIZE];
  41         u8 standby[SCLP_CHP_INFO_MASK_SIZE];
  42         u8 configured[SCLP_CHP_INFO_MASK_SIZE];
  43 };
  44
  45 extern struct sclp_readinfo_sccb s390_readinfo_sccb;
  46 extern void sclp_readinfo_early(void);
  47 extern int sclp_sdias_blk_count(void);
  48 extern int sclp_sdias_copy(void *dest, int blk_num, int nr_blks);
  49 extern int sclp_chp_configure(struct chp_id chpid);
  50 extern int sclp_chp_deconfigure(struct chp_id chpid);
  51 extern int sclp_chp_read_info(struct sclp_chp_info *info);
  52
  53 #endif /* _ASM_S390_SCLP_H */