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"
35 extern 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 */
60 struct 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
74 extern const struct hotplug_slot_ops rpaphp_hotplug_slot_ops;
75 extern struct list_head rpaphp_slot_head;
76
to_slot(struct hotplug_slot * hotplug_slot)77 static 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 */
85 int rpaphp_enable_slot(struct slot *slot);
86 int rpaphp_get_sensor_state(struct slot *slot, int *state);
87
88 /* rpaphp_core.c */
89 int rpaphp_add_slot(struct device_node *dn);
90 int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
91 char *drc_type);
92
93 /* rpaphp_slot.c */
94 void dealloc_slot_struct(struct slot *slot);
95 struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain);
96 int rpaphp_register_slot(struct slot *slot);
97 int rpaphp_deregister_slot(struct slot *slot);
98
99 #endif /* _PPC64PHP_H */
100