arch/powerpc/include/asm/papr-sysparm.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #ifndef _ASM_POWERPC_PAPR_SYSPARM_H
   3 #define _ASM_POWERPC_PAPR_SYSPARM_H
   4
   5 typedef struct {
   6         const u32 token;
   7 } papr_sysparm_t;
   8
   9 #define mk_papr_sysparm(x_) ((papr_sysparm_t){ .token = x_, })
  10
  11 /*
  12  * Derived from the "Defined Parameters" table in PAPR 7.3.16 System
  13  * Parameters Option. Where the spec says "characteristics", we use
  14  * "attrs" in the symbolic names to keep them from getting too
  15  * unwieldy.
  16  */
  17 #define PAPR_SYSPARM_SHARED_PROC_LPAR_ATTRS        mk_papr_sysparm(20)
  18 #define PAPR_SYSPARM_PROC_MODULE_INFO              mk_papr_sysparm(43)
  19 #define PAPR_SYSPARM_COOP_MEM_OVERCOMMIT_ATTRS     mk_papr_sysparm(44)
  20 #define PAPR_SYSPARM_TLB_BLOCK_INVALIDATE_ATTRS    mk_papr_sysparm(50)
  21 #define PAPR_SYSPARM_LPAR_NAME                     mk_papr_sysparm(55)
  22
  23 enum {
  24         PAPR_SYSPARM_MAX_INPUT  = 1024,
  25         PAPR_SYSPARM_MAX_OUTPUT = 4000,
  26 };
  27
  28 struct papr_sysparm_buf {
  29         __be16 len;
  30         char val[PAPR_SYSPARM_MAX_OUTPUT];
  31 };
  32
  33 struct papr_sysparm_buf *papr_sysparm_buf_alloc(void);
  34 void papr_sysparm_buf_free(struct papr_sysparm_buf *buf);
  35 int papr_sysparm_set(papr_sysparm_t param, const struct papr_sysparm_buf *buf);
  36 int papr_sysparm_get(papr_sysparm_t param, struct papr_sysparm_buf *buf);
  37
  38 #endif /* _ASM_POWERPC_PAPR_SYSPARM_H */