Gitiles
Code Review Sign In
review.shift-gmbh.com / SHIFTPHONES / mainline / linux / 4a387c98b3abc7cf9a2281f01f9b4dd7dbc48f65 / . / drivers / pci / hotplug / cpci_hotplug.h
blob: 3fdd1b9bd8c331c13d89d187cf10517cdd6b0bc2 [file] [log] [blame]
Bjorn Helgaas736759e2018-01-26 14:22:04 -0600[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0+ */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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>
Alex Chiangd6c479e2008-10-20 17:41:17 -0600[diff] [blame]19#include <linux/pci_hotplug.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]20
Scott Murray43b7d7c2005-05-09 17:31:50 -0400[diff] [blame]21/* PICMG 2.1 R2.0 HS CSR bits: */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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;
Lukas Wunnera7da2162018-09-08 09:59:01 +0200[diff] [blame]35 unsigned int latch_status:1;
36 unsigned int adapter_status:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]37 unsigned int extracting;
Lukas Wunner125450f2018-09-08 09:59:01 +0200[diff] [blame]38 struct hotplug_slot hotplug_slot;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]39 struct list_head slot_list;
40};
41
42struct cpci_hp_controller_ops {
Bogicevic Sasaff3ce482015-12-27 13:21:11 -0800[diff] [blame]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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]50};
51
52struct 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
Alex Chiangd6c479e2008-10-20 17:41:17 -0600[diff] [blame]61static inline const char *slot_name(struct slot *slot)
62{
Lukas Wunner125450f2018-09-08 09:59:01 +0200[diff] [blame]63 return hotplug_slot_name(&slot->hotplug_slot);
64}
65
66static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot)
67{
68 return container_of(hotplug_slot, struct slot, hotplug_slot);
Alex Chiangd6c479e2008-10-20 17:41:17 -0600[diff] [blame]69}
70
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600[diff] [blame]71int cpci_hp_register_controller(struct cpci_hp_controller *controller);
72int cpci_hp_unregister_controller(struct cpci_hp_controller *controller);
73int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last);
74int cpci_hp_unregister_bus(struct pci_bus *bus);
75int cpci_hp_start(void);
76int cpci_hp_stop(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]77
Krzysztof Wilczyński6d71cc42021-07-01 18:43:06 +0000[diff] [blame]78/* Global variables */
79extern int cpci_debug;
80
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]81/*
82 * Internal function prototypes, these functions should not be used by
83 * board/chassis drivers.
84 */
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600[diff] [blame]85u8 cpci_get_attention_status(struct slot *slot);
86u8 cpci_get_latch_status(struct slot *slot);
87u8 cpci_get_adapter_status(struct slot *slot);
Ryan Desfosses3c78bc62014-04-18 20:13:49 -0400[diff] [blame]88u16 cpci_get_hs_csr(struct slot *slot);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600[diff] [blame]89int cpci_set_attention_status(struct slot *slot, int status);
Ryan Desfosses3c78bc62014-04-18 20:13:49 -0400[diff] [blame]90int cpci_check_and_clear_ins(struct slot *slot);
91int cpci_check_ext(struct slot *slot);
92int cpci_clear_ext(struct slot *slot);
93int cpci_led_on(struct slot *slot);
94int cpci_led_off(struct slot *slot);
Bjorn Helgaasf39d5b72013-04-12 12:02:59 -0600[diff] [blame]95int cpci_configure_slot(struct slot *slot);
96int cpci_unconfigure_slot(struct slot *slot);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]97
Bjorn Helgaasc3139ba2013-04-15 10:44:18 -0600[diff] [blame]98#ifdef CONFIG_HOTPLUG_PCI_CPCI
99int cpci_hotplug_init(int debug);
Bjorn Helgaasc3139ba2013-04-15 10:44:18 -0600[diff] [blame]100#else
101static inline int cpci_hotplug_init(int debug) { return 0; }
Bjorn Helgaasc3139ba2013-04-15 10:44:18 -0600[diff] [blame]102#endif
103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]104#endif /* _CPCI_HOTPLUG_H */