1 /*
2  * CompactPCI Hot Plug Core Functions
3  *
4  * Copyright (C) 2002 SOMA Networks, Inc.
5  * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
6  * Copyright (C) 2001 IBM Corp.
7  *
8  * All rights reserved.
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or (at
13  * your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful, but
16  * WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
18  * NON INFRINGEMENT.  See the GNU General Public License for more
19  * details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24  *
25  * Send feedback to <scottm@somanetworks.com>
26  */
27 
28 #ifndef _CPCI_HOTPLUG_H
29 #define _CPCI_HOTPLUG_H
30 
31 #include <linux/types.h>
32 #include <linux/pci.h>
33 #include <linux/pci_hotplug.h>
34 
35 /* PICMG 2.1 R2.0 HS CSR bits: */
36 #define HS_CSR_INS	0x0080
37 #define HS_CSR_EXT	0x0040
38 #define HS_CSR_PI	0x0030
39 #define HS_CSR_LOO	0x0008
40 #define HS_CSR_PIE	0x0004
41 #define HS_CSR_EIM	0x0002
42 #define HS_CSR_DHA	0x0001
43 
44 struct slot {
45 	u8 number;
46 	unsigned int devfn;
47 	struct pci_bus *bus;
48 	struct pci_dev *dev;
49 	unsigned int extracting;
50 	struct hotplug_slot *hotplug_slot;
51 	struct list_head slot_list;
52 };
53 
54 struct cpci_hp_controller_ops {
55 	int (*query_enum)(void);
56 	int (*enable_irq)(void);
57 	int (*disable_irq)(void);
58 	int (*check_irq)(void *dev_id);
59 	int (*hardware_test)(struct slot *slot, u32 value);
60 	u8  (*get_power)(struct slot *slot);
61 	int (*set_power)(struct slot *slot, int value);
62 };
63 
64 struct cpci_hp_controller {
65 	unsigned int irq;
66 	unsigned long irq_flags;
67 	char *devname;
68 	void *dev_id;
69 	char *name;
70 	struct cpci_hp_controller_ops *ops;
71 };
72 
73 static inline const char *slot_name(struct slot *slot)
74 {
75 	return hotplug_slot_name(slot->hotplug_slot);
76 }
77 
78 int cpci_hp_register_controller(struct cpci_hp_controller *controller);
79 int cpci_hp_unregister_controller(struct cpci_hp_controller *controller);
80 int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last);
81 int cpci_hp_unregister_bus(struct pci_bus *bus);
82 int cpci_hp_start(void);
83 int cpci_hp_stop(void);
84 
85 /*
86  * Internal function prototypes, these functions should not be used by
87  * board/chassis drivers.
88  */
89 u8 cpci_get_attention_status(struct slot *slot);
90 u8 cpci_get_latch_status(struct slot *slot);
91 u8 cpci_get_adapter_status(struct slot *slot);
92 u16 cpci_get_hs_csr(struct slot *slot);
93 int cpci_set_attention_status(struct slot *slot, int status);
94 int cpci_check_and_clear_ins(struct slot *slot);
95 int cpci_check_ext(struct slot *slot);
96 int cpci_clear_ext(struct slot *slot);
97 int cpci_led_on(struct slot *slot);
98 int cpci_led_off(struct slot *slot);
99 int cpci_configure_slot(struct slot *slot);
100 int cpci_unconfigure_slot(struct slot *slot);
101 
102 #ifdef CONFIG_HOTPLUG_PCI_CPCI
103 int cpci_hotplug_init(int debug);
104 #else
105 static inline int cpci_hotplug_init(int debug) { return 0; }
106 #endif
107 
108 #endif	/* _CPCI_HOTPLUG_H */
109