1/* SPDX-License-Identifier: GPL-2.0-or-later */
2#ifndef _ASM_POWERPC_RTAS_TYPES_H
3#define _ASM_POWERPC_RTAS_TYPES_H
4
5#include <linux/compiler_attributes.h>
6
7typedef __be32 rtas_arg_t;
8
9struct rtas_args {
10	__be32 token;
11	__be32 nargs;
12	__be32 nret;
13	rtas_arg_t args[16];
14	rtas_arg_t *rets;     /* Pointer to return values in args[]. */
15} __aligned(8);
16
17struct rtas_t {
18	unsigned long entry;		/* physical address pointer */
19	unsigned long base;		/* physical address pointer */
20	unsigned long size;
21	struct device_node *dev;	/* virtual address pointer */
22};
23
24struct rtas_error_log {
25	/* Byte 0 */
26	u8		byte0;			/* Architectural version */
27
28	/* Byte 1 */
29	u8		byte1;
30	/* XXXXXXXX
31	 * XXX		3: Severity level of error
32	 *    XX	2: Degree of recovery
33	 *      X	1: Extended log present?
34	 *       XX	2: Reserved
35	 */
36
37	/* Byte 2 */
38	u8		byte2;
39	/* XXXXXXXX
40	 * XXXX		4: Initiator of event
41	 *     XXXX	4: Target of failed operation
42	 */
43	u8		byte3;			/* General event or error*/
44	__be32		extended_log_length;	/* length in bytes */
45	unsigned char	buffer[1];		/* Start of extended log */
46						/* Variable length.      */
47};
48
49/* RTAS general extended event log, Version 6. The extended log starts
50 * from "buffer" field of struct rtas_error_log defined above.
51 */
52struct rtas_ext_event_log_v6 {
53	/* Byte 0 */
54	u8 byte0;
55	/* XXXXXXXX
56	 * X		1: Log valid
57	 *  X		1: Unrecoverable error
58	 *   X		1: Recoverable (correctable or successfully retried)
59	 *    X		1: Bypassed unrecoverable error (degraded operation)
60	 *     X	1: Predictive error
61	 *      X	1: "New" log (always 1 for data returned from RTAS)
62	 *       X	1: Big Endian
63	 *        X	1: Reserved
64	 */
65
66	/* Byte 1 */
67	u8 byte1;			/* reserved */
68
69	/* Byte 2 */
70	u8 byte2;
71	/* XXXXXXXX
72	 * X		1: Set to 1 (indicating log is in PowerPC format)
73	 *  XXX		3: Reserved
74	 *     XXXX	4: Log format used for bytes 12-2047
75	 */
76
77	/* Byte 3 */
78	u8 byte3;			/* reserved */
79	/* Byte 4-11 */
80	u8 reserved[8];			/* reserved */
81	/* Byte 12-15 */
82	__be32  company_id;		/* Company ID of the company	*/
83					/* that defines the format for	*/
84					/* the vendor specific log type	*/
85	/* Byte 16-end of log */
86	u8 vendor_log[1];		/* Start of vendor specific log	*/
87					/* Variable length.		*/
88};
89
90/* Vendor specific Platform Event Log Format, Version 6, section header */
91struct pseries_errorlog {
92	__be16 id;			/* 0x00 2-byte ASCII section ID	*/
93	__be16 length;			/* 0x02 Section length in bytes	*/
94	u8 version;			/* 0x04 Section version		*/
95	u8 subtype;			/* 0x05 Section subtype		*/
96	__be16 creator_component;	/* 0x06 Creator component ID	*/
97	u8 data[];			/* 0x08 Start of section data	*/
98};
99
100/* RTAS pseries hotplug errorlog section */
101struct pseries_hp_errorlog {
102	u8	resource;
103	u8	action;
104	u8	id_type;
105	u8	reserved;
106	union {
107		__be32	drc_index;
108		__be32	drc_count;
109		struct { __be32 count, index; } ic;
110		char	drc_name[1];
111	} _drc_u;
112};
113
114#endif /* _ASM_POWERPC_RTAS_TYPES_H */
115