tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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 char *name;
67 struct device_node *dn;
68 struct pci_bus *bus;
69 struct list_head *pci_devs;
70 struct hotplug_slot *hotplug_slot;
71};
72
73extern struct hotplug_slot_ops rpaphp_hotplug_slot_ops;
74extern struct list_head rpaphp_slot_head;
75
76/* function prototypes */
77
78/* rpaphp_pci.c */
79int rpaphp_enable_slot(struct slot *slot);
80int rpaphp_get_sensor_state(struct slot *slot, int *state);
81
82/* rpaphp_core.c */
83int rpaphp_add_slot(struct device_node *dn);
84int rpaphp_check_drc_props(struct device_node *dn, char *drc_name,
85 char *drc_type);
86
87/* rpaphp_slot.c */
88void dealloc_slot_struct(struct slot *slot);
89struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain);
90int rpaphp_register_slot(struct slot *slot);
91int rpaphp_deregister_slot(struct slot *slot);
92
93#endif /* _PPC64PHP_H */