1419e27f3SNathan Lynch /* SPDX-License-Identifier: GPL-2.0-only */ 2419e27f3SNathan Lynch #ifndef _ASM_POWERPC_PAPR_SYSPARM_H 3419e27f3SNathan Lynch #define _ASM_POWERPC_PAPR_SYSPARM_H 4419e27f3SNathan Lynch 5905b9e48SNathan Lynch #include <uapi/asm/papr-sysparm.h> 6905b9e48SNathan Lynch 7419e27f3SNathan Lynch typedef struct { 8905b9e48SNathan Lynch u32 token; 9419e27f3SNathan Lynch } papr_sysparm_t; 10419e27f3SNathan Lynch 11419e27f3SNathan Lynch #define mk_papr_sysparm(x_) ((papr_sysparm_t){ .token = x_, }) 12419e27f3SNathan Lynch 13419e27f3SNathan Lynch /* 14419e27f3SNathan Lynch * Derived from the "Defined Parameters" table in PAPR 7.3.16 System 15419e27f3SNathan Lynch * Parameters Option. Where the spec says "characteristics", we use 16419e27f3SNathan Lynch * "attrs" in the symbolic names to keep them from getting too 17419e27f3SNathan Lynch * unwieldy. 18419e27f3SNathan Lynch */ 19419e27f3SNathan Lynch #define PAPR_SYSPARM_SHARED_PROC_LPAR_ATTRS mk_papr_sysparm(20) 20419e27f3SNathan Lynch #define PAPR_SYSPARM_PROC_MODULE_INFO mk_papr_sysparm(43) 21419e27f3SNathan Lynch #define PAPR_SYSPARM_COOP_MEM_OVERCOMMIT_ATTRS mk_papr_sysparm(44) 22419e27f3SNathan Lynch #define PAPR_SYSPARM_TLB_BLOCK_INVALIDATE_ATTRS mk_papr_sysparm(50) 23419e27f3SNathan Lynch #define PAPR_SYSPARM_LPAR_NAME mk_papr_sysparm(55) 24419e27f3SNathan Lynch 25905b9e48SNathan Lynch /** 26905b9e48SNathan Lynch * struct papr_sysparm_buf - RTAS work area layout for system parameter functions. 27905b9e48SNathan Lynch * 28905b9e48SNathan Lynch * This is the memory layout of the buffers passed to/from 29905b9e48SNathan Lynch * ibm,get-system-parameter and ibm,set-system-parameter. It is 30905b9e48SNathan Lynch * distinct from the papr_sysparm_io_block structure that is passed 31905b9e48SNathan Lynch * between user space and the kernel. 32905b9e48SNathan Lynch */ 33419e27f3SNathan Lynch struct papr_sysparm_buf { 34419e27f3SNathan Lynch __be16 len; 35*8ded03aeSNathan Lynch u8 val[PAPR_SYSPARM_MAX_OUTPUT]; 36419e27f3SNathan Lynch }; 37419e27f3SNathan Lynch 38419e27f3SNathan Lynch struct papr_sysparm_buf *papr_sysparm_buf_alloc(void); 39419e27f3SNathan Lynch void papr_sysparm_buf_free(struct papr_sysparm_buf *buf); 40419e27f3SNathan Lynch int papr_sysparm_set(papr_sysparm_t param, const struct papr_sysparm_buf *buf); 41419e27f3SNathan Lynch int papr_sysparm_get(papr_sysparm_t param, struct papr_sysparm_buf *buf); 42419e27f3SNathan Lynch 43419e27f3SNathan Lynch #endif /* _ASM_POWERPC_PAPR_SYSPARM_H */ 44