1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * PCI Hot Plug Controller Driver for RPA-compliant PPC64 platform.
4 *
5 * Copyright (C) 2003 Linda Xie <lxie@us.ibm.com>
6 *
7 * All rights reserved.
8 *
9 * Send feedback to <lxie@us.ibm.com>,
10 *
11 */
12
13#ifndef _PPC64PHP_H
14#define _PPC64PHP_H
15
16#include <linux/pci.h>
17#include <linux/pci_hotplug.h>
18
19#define DR_INDICATOR 9002
20#define DR_ENTITY_SENSE 9003
21
22#define POWER_ON	100
23#define POWER_OFF	0
24
25#define LED_OFF		0
26#define LED_ON		1	/* continuous on */
27#define LED_ID		2	/* slow blinking */
28#define LED_ACTION	3	/* fast blinking */
29
30/* Sensor values from rtas_get-sensor */
31#define EMPTY           0	/* No card in slot */
32#define PRESENT         1	/* Card in slot */
33
34#define MY_NAME "rpaphp"
35extern bool rpaphp_debug;
36#define dbg(format, arg...)					\
37	do {							\
38		if (rpaphp_debug)				\
39			printk(KERN_DEBUG "%s: " format,	\
40				MY_NAME, ## arg);		\
41	} while (0)
42#define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME, ## arg)
43#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg)
44#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg)
45
46/* slot states */
47
48#define	NOT_VALID	3
49#define	NOT_CONFIGURED	2
50#define	CONFIGURED	1
51#define	EMPTY		0
52
53/* DRC constants */
54
55#define MAX_DRC_NAME_LEN 64
56
57/*
58 * struct slot - slot information for each *physical* slot
59 */
60struct slot {
61	struct list_head rpaphp_slot_list;
62	int state;
63	u32 index;
64	u32 type;
65	u32 power_domain;
66	u8 attention_status;
67	char *name;
68	struct device_node *dn;
69	struct pci_bus *bus;
70	struct list_head *pci_devs;
71	struct hotplug_slot hotplug_slot;
72};
73
74extern const struct hotplug_slot_ops rpaphp_hotplug_slot_ops;
75extern struct list_head rpaphp_slot_head;
76
77static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot)
78{
79	return container_of(hotplug_slot, struct slot, hotplug_slot);
80}
81
82/* function prototypes */
83
84/* rpaphp_pci.c */
85int rpaphp_enable_slot(struct slot *slot);
86int rpaphp_get_sensor_state(struct slot *slot, int *state);
87
88/* rpaphp_core.c */
89int rpaphp_add_slot(struct device_node *dn);
90int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
91		char *drc_type);
92
93/* rpaphp_slot.c */
94void dealloc_slot_struct(struct slot *slot);
95struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain);
96int rpaphp_register_slot(struct slot *slot);
97int rpaphp_deregister_slot(struct slot *slot);
98
99#endif				/* _PPC64PHP_H */
100