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 | |
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 | |