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 (greg@kroah.com) |
7 | * Copyright (C) 2001 IBM Corp. |
8 | * |
9 | * All rights reserved. |
10 | * |
11 | * Send feedback to <scottm@somanetworks.com> |
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 | |
30 | struct 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 ; |
38 | struct hotplug_slot hotplug_slot; |
39 | struct list_head slot_list; |
40 | }; |
41 | |
42 | struct 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 | int (*hardware_test)(struct slot *slot, u32 value); |
48 | u8 (*get_power)(struct slot *slot); |
49 | int (*set_power)(struct slot *slot, int value); |
50 | }; |
51 | |
52 | struct cpci_hp_controller { |
53 | unsigned int irq; |
54 | unsigned long irq_flags; |
55 | char *devname; |
56 | void *dev_id; |
57 | char *name; |
58 | struct cpci_hp_controller_ops *ops; |
59 | }; |
60 | |
61 | static inline const char *slot_name(struct slot *slot) |
62 | { |
63 | return hotplug_slot_name(slot: &slot->hotplug_slot); |
64 | } |
65 | |
66 | static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot) |
67 | { |
68 | return container_of(hotplug_slot, struct slot, hotplug_slot); |
69 | } |
70 | |
71 | int cpci_hp_register_controller(struct cpci_hp_controller *controller); |
72 | int cpci_hp_unregister_controller(struct cpci_hp_controller *controller); |
73 | int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last); |
74 | int cpci_hp_unregister_bus(struct pci_bus *bus); |
75 | int cpci_hp_start(void); |
76 | int cpci_hp_stop(void); |
77 | |
78 | /* Global variables */ |
79 | extern int cpci_debug; |
80 | |
81 | /* |
82 | * Internal function prototypes, these functions should not be used by |
83 | * board/chassis drivers. |
84 | */ |
85 | u8 cpci_get_attention_status(struct slot *slot); |
86 | u16 cpci_get_hs_csr(struct slot *slot); |
87 | int cpci_set_attention_status(struct slot *slot, int status); |
88 | int cpci_check_and_clear_ins(struct slot *slot); |
89 | int cpci_check_ext(struct slot *slot); |
90 | int cpci_clear_ext(struct slot *slot); |
91 | int cpci_led_on(struct slot *slot); |
92 | int cpci_led_off(struct slot *slot); |
93 | int cpci_configure_slot(struct slot *slot); |
94 | int cpci_unconfigure_slot(struct slot *slot); |
95 | |
96 | #ifdef CONFIG_HOTPLUG_PCI_CPCI |
97 | int cpci_hotplug_init(int debug); |
98 | #else |
99 | static inline int cpci_hotplug_init(int debug) { return 0; } |
100 | #endif |
101 | |
102 | #endif /* _CPCI_HOTPLUG_H */ |
103 | |