Merge tag 'x86-asm-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
[linux-2.6-microblaze.git] / 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 #include <uapi/asm/papr-sysparm.h>
6
7 typedef struct {
8         u32 token;
9 } papr_sysparm_t;
10
11 #define mk_papr_sysparm(x_) ((papr_sysparm_t){ .token = x_, })
12
13 /*
14  * Derived from the "Defined Parameters" table in PAPR 7.3.16 System
15  * Parameters Option. Where the spec says "characteristics", we use
16  * "attrs" in the symbolic names to keep them from getting too
17  * unwieldy.
18  */
19 #define PAPR_SYSPARM_SHARED_PROC_LPAR_ATTRS        mk_papr_sysparm(20)
20 #define PAPR_SYSPARM_PROC_MODULE_INFO              mk_papr_sysparm(43)
21 #define PAPR_SYSPARM_COOP_MEM_OVERCOMMIT_ATTRS     mk_papr_sysparm(44)
22 #define PAPR_SYSPARM_TLB_BLOCK_INVALIDATE_ATTRS    mk_papr_sysparm(50)
23 #define PAPR_SYSPARM_LPAR_NAME                     mk_papr_sysparm(55)
24
25 /**
26  * struct papr_sysparm_buf - RTAS work area layout for system parameter functions.
27  *
28  * This is the memory layout of the buffers passed to/from
29  * ibm,get-system-parameter and ibm,set-system-parameter. It is
30  * distinct from the papr_sysparm_io_block structure that is passed
31  * between user space and the kernel.
32  */
33 struct papr_sysparm_buf {
34         __be16 len;
35         char val[PAPR_SYSPARM_MAX_OUTPUT];
36 };
37
38 struct papr_sysparm_buf *papr_sysparm_buf_alloc(void);
39 void papr_sysparm_buf_free(struct papr_sysparm_buf *buf);
40 int papr_sysparm_set(papr_sysparm_t param, const struct papr_sysparm_buf *buf);
41 int papr_sysparm_get(papr_sysparm_t param, struct papr_sysparm_buf *buf);
42
43 #endif /* _ASM_POWERPC_PAPR_SYSPARM_H */