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1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * CompactPCI Hot Plug Core Functions
4 *
5 * Copyright (C) 2002 SOMA Networks, Inc.
6 * Copyright (C) 2001 Greg Kroah-Hartman ([email protected])
7 * Copyright (C) 2001 IBM Corp.
8 *
9 * All rights reserved.
10 *
11 * Send feedback to <[email protected]>
12 */
13
14#ifndef _CPCI_HOTPLUG_H
15#define _CPCI_HOTPLUG_H
16
17#include <linux/types.h>
18#include <linux/pci.h>
19#include <linux/pci_hotplug.h>
20
21/* PICMG 2.1 R2.0 HS CSR bits: */
22#define HS_CSR_INS 0x0080
23#define HS_CSR_EXT 0x0040
24#define HS_CSR_PI 0x0030
25#define HS_CSR_LOO 0x0008
26#define HS_CSR_PIE 0x0004
27#define HS_CSR_EIM 0x0002
28#define HS_CSR_DHA 0x0001
29
30struct slot {
31 u8 number;
32 unsigned int devfn;
33 struct pci_bus *bus;
34 struct pci_dev *dev;
35 unsigned int latch_status:1;
36 unsigned int adapter_status:1;
37 unsigned int extracting;
38 struct hotplug_slot hotplug_slot;
39 struct list_head slot_list;
40};
41
42struct cpci_hp_controller_ops {
43 int (*query_enum)(void);
44 int (*enable_irq)(void);
45 int (*disable_irq)(void);
46 int (*check_irq)(void *dev_id);
47};
48
49struct cpci_hp_controller {
50 unsigned int irq;
51 unsigned long irq_flags;
52 char *devname;
53 void *dev_id;
54 char *name;
55 struct cpci_hp_controller_ops *ops;
56};
57
58static inline const char *slot_name(struct slot *slot)
59{
60 return hotplug_slot_name(&slot->hotplug_slot);
61}
62
63static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot)
64{
65 return container_of(hotplug_slot, struct slot, hotplug_slot);
66}
67
68int cpci_hp_register_controller(struct cpci_hp_controller *controller);
69int cpci_hp_unregister_controller(struct cpci_hp_controller *controller);
70int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last);
71int cpci_hp_unregister_bus(struct pci_bus *bus);
72int cpci_hp_start(void);
73int cpci_hp_stop(void);
74
75/* Global variables */
76extern int cpci_debug;
77
78/*
79 * Internal function prototypes, these functions should not be used by
80 * board/chassis drivers.
81 */
82u8 cpci_get_attention_status(struct slot *slot);
83u16 cpci_get_hs_csr(struct slot *slot);
84int cpci_set_attention_status(struct slot *slot, int status);
85int cpci_check_and_clear_ins(struct slot *slot);
86int cpci_check_ext(struct slot *slot);
87int cpci_clear_ext(struct slot *slot);
88int cpci_led_on(struct slot *slot);
89int cpci_led_off(struct slot *slot);
90int cpci_configure_slot(struct slot *slot);
91int cpci_unconfigure_slot(struct slot *slot);
92
93#ifdef CONFIG_HOTPLUG_PCI_CPCI
94int cpci_hotplug_init(int debug);
95#else
96static inline int cpci_hotplug_init(int debug) { return 0; }
97#endif
98
99#endif /* _CPCI_HOTPLUG_H */