1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * PCI Hot Plug Controller Driver for RPA-compliant PPC64 platform.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2003 Linda Xie <lxie@us.ibm.com>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * All rights reserved.
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * Send feedback to <lxie@us.ibm.com>,
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun */
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #ifndef _PPC64PHP_H
14*4882a593Smuzhiyun #define _PPC64PHP_H
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #include <linux/pci.h>
17*4882a593Smuzhiyun #include <linux/pci_hotplug.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #define DR_INDICATOR 9002
20*4882a593Smuzhiyun #define DR_ENTITY_SENSE 9003
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun #define POWER_ON 100
23*4882a593Smuzhiyun #define POWER_OFF 0
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #define LED_OFF 0
26*4882a593Smuzhiyun #define LED_ON 1 /* continuous on */
27*4882a593Smuzhiyun #define LED_ID 2 /* slow blinking */
28*4882a593Smuzhiyun #define LED_ACTION 3 /* fast blinking */
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun /* Sensor values from rtas_get-sensor */
31*4882a593Smuzhiyun #define EMPTY 0 /* No card in slot */
32*4882a593Smuzhiyun #define PRESENT 1 /* Card in slot */
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun #define MY_NAME "rpaphp"
35*4882a593Smuzhiyun extern bool rpaphp_debug;
36*4882a593Smuzhiyun #define dbg(format, arg...) \
37*4882a593Smuzhiyun do { \
38*4882a593Smuzhiyun if (rpaphp_debug) \
39*4882a593Smuzhiyun printk(KERN_DEBUG "%s: " format, \
40*4882a593Smuzhiyun MY_NAME, ## arg); \
41*4882a593Smuzhiyun } while (0)
42*4882a593Smuzhiyun #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME, ## arg)
43*4882a593Smuzhiyun #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg)
44*4882a593Smuzhiyun #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg)
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun /* slot states */
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun #define NOT_VALID 3
49*4882a593Smuzhiyun #define NOT_CONFIGURED 2
50*4882a593Smuzhiyun #define CONFIGURED 1
51*4882a593Smuzhiyun #define EMPTY 0
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun /* DRC constants */
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun #define MAX_DRC_NAME_LEN 64
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun /*
58*4882a593Smuzhiyun * struct slot - slot information for each *physical* slot
59*4882a593Smuzhiyun */
60*4882a593Smuzhiyun struct slot {
61*4882a593Smuzhiyun struct list_head rpaphp_slot_list;
62*4882a593Smuzhiyun int state;
63*4882a593Smuzhiyun u32 index;
64*4882a593Smuzhiyun u32 type;
65*4882a593Smuzhiyun u32 power_domain;
66*4882a593Smuzhiyun u8 attention_status;
67*4882a593Smuzhiyun char *name;
68*4882a593Smuzhiyun struct device_node *dn;
69*4882a593Smuzhiyun struct pci_bus *bus;
70*4882a593Smuzhiyun struct list_head *pci_devs;
71*4882a593Smuzhiyun struct hotplug_slot hotplug_slot;
72*4882a593Smuzhiyun };
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun extern const struct hotplug_slot_ops rpaphp_hotplug_slot_ops;
75*4882a593Smuzhiyun extern struct list_head rpaphp_slot_head;
76*4882a593Smuzhiyun
to_slot(struct hotplug_slot * hotplug_slot)77*4882a593Smuzhiyun static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot)
78*4882a593Smuzhiyun {
79*4882a593Smuzhiyun return container_of(hotplug_slot, struct slot, hotplug_slot);
80*4882a593Smuzhiyun }
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun /* function prototypes */
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun /* rpaphp_pci.c */
85*4882a593Smuzhiyun int rpaphp_enable_slot(struct slot *slot);
86*4882a593Smuzhiyun int rpaphp_get_sensor_state(struct slot *slot, int *state);
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun /* rpaphp_core.c */
89*4882a593Smuzhiyun int rpaphp_add_slot(struct device_node *dn);
90*4882a593Smuzhiyun int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
91*4882a593Smuzhiyun char *drc_type);
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun /* rpaphp_slot.c */
94*4882a593Smuzhiyun void dealloc_slot_struct(struct slot *slot);
95*4882a593Smuzhiyun struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain);
96*4882a593Smuzhiyun int rpaphp_register_slot(struct slot *slot);
97*4882a593Smuzhiyun int rpaphp_deregister_slot(struct slot *slot);
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun #endif /* _PPC64PHP_H */
100