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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _ASM_POWERPC_PAPR_SYSPARM_H
#define _ASM_POWERPC_PAPR_SYSPARM_H
#include <uapi/asm/papr-sysparm.h>
typedef struct {
u32 token;
} papr_sysparm_t;
#define mk_papr_sysparm(x_) ((papr_sysparm_t){ .token = x_, })
/*
* Derived from the "Defined Parameters" table in PAPR 7.3.16 System
* Parameters Option. Where the spec says "characteristics", we use
* "attrs" in the symbolic names to keep them from getting too
* unwieldy.
*/
#define PAPR_SYSPARM_SHARED_PROC_LPAR_ATTRS mk_papr_sysparm(20)
#define PAPR_SYSPARM_PROC_MODULE_INFO mk_papr_sysparm(43)
#define PAPR_SYSPARM_COOP_MEM_OVERCOMMIT_ATTRS mk_papr_sysparm(44)
#define PAPR_SYSPARM_TLB_BLOCK_INVALIDATE_ATTRS mk_papr_sysparm(50)
#define PAPR_SYSPARM_LPAR_NAME mk_papr_sysparm(55)
/**
* struct papr_sysparm_buf - RTAS work area layout for system parameter functions.
*
* This is the memory layout of the buffers passed to/from
* ibm,get-system-parameter and ibm,set-system-parameter. It is
* distinct from the papr_sysparm_io_block structure that is passed
* between user space and the kernel.
*/
struct papr_sysparm_buf {
__be16 len;
char val[PAPR_SYSPARM_MAX_OUTPUT];
};
struct papr_sysparm_buf *papr_sysparm_buf_alloc(void);
void papr_sysparm_buf_free(struct papr_sysparm_buf *buf);
int papr_sysparm_set(papr_sysparm_t param, const struct papr_sysparm_buf *buf);
int papr_sysparm_get(papr_sysparm_t param, struct papr_sysparm_buf *buf);
#endif /* _ASM_POWERPC_PAPR_SYSPARM_H */
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