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fsnotify: unified filesystem notification backend
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / pci_hotplug.h
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1da177e4
LT		 1/*
2 * PCI HotPlug Core Functions
3 *
4 * Copyright (C) 1995,2001 Compaq Computer Corporation
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 *
fb5f4d7a 25 * Send feedback to <kristen.c.accardi@intel.com>
1da177e4
LT		 26 *
27 */
28#ifndef _PCI_HOTPLUG_H
29#define _PCI_HOTPLUG_H
30
31
32/* These values come from the PCI Hotplug Spec */
33enum pci_bus_speed {
34 PCI_SPEED_33MHz = 0x00,
35 PCI_SPEED_66MHz = 0x01,
36 PCI_SPEED_66MHz_PCIX = 0x02,
37 PCI_SPEED_100MHz_PCIX = 0x03,
38 PCI_SPEED_133MHz_PCIX = 0x04,
39 PCI_SPEED_66MHz_PCIX_ECC = 0x05,
40 PCI_SPEED_100MHz_PCIX_ECC = 0x06,
41 PCI_SPEED_133MHz_PCIX_ECC = 0x07,
42 PCI_SPEED_66MHz_PCIX_266 = 0x09,
43 PCI_SPEED_100MHz_PCIX_266 = 0x0a,
44 PCI_SPEED_133MHz_PCIX_266 = 0x0b,
45 PCI_SPEED_66MHz_PCIX_533 = 0x11,
46 PCI_SPEED_100MHz_PCIX_533 = 0x12,
47 PCI_SPEED_133MHz_PCIX_533 = 0x13,
48 PCI_SPEED_UNKNOWN = 0xff,
49};
50
51/* These values come from the PCI Express Spec */
52enum pcie_link_width {
53 PCIE_LNK_WIDTH_RESRV = 0x00,
54 PCIE_LNK_X1 = 0x01,
55 PCIE_LNK_X2 = 0x02,
56 PCIE_LNK_X4 = 0x04,
57 PCIE_LNK_X8 = 0x08,
58 PCIE_LNK_X12 = 0x0C,
59 PCIE_LNK_X16 = 0x10,
60 PCIE_LNK_X32 = 0x20,
61 PCIE_LNK_WIDTH_UNKNOWN = 0xFF,
62};
63
64enum pcie_link_speed {
65 PCIE_2PT5GB = 0x14,
66 PCIE_LNK_SPEED_UNKNOWN = 0xFF,
67};
68
69struct hotplug_slot;
70struct hotplug_slot_attribute {
71 struct attribute attr;
72 ssize_t (*show)(struct hotplug_slot *, char *);
73 ssize_t (*store)(struct hotplug_slot *, const char *, size_t);
74};
75#define to_hotplug_attr(n) container_of(n, struct hotplug_slot_attribute, attr);
76
77/**
78 * struct hotplug_slot_ops -the callbacks that the hotplug pci core can use
79 * @owner: The module owner of this structure
80 * @enable_slot: Called when the user wants to enable a specific pci slot
81 * @disable_slot: Called when the user wants to disable a specific pci slot
82 * @set_attention_status: Called to set the specific slot's attention LED to
83 * the specified value
84 * @hardware_test: Called to run a specified hardware test on the specified
85 * slot.
86 * @get_power_status: Called to get the current power status of a slot.
87 * If this field is NULL, the value passed in the struct hotplug_slot_info
88 * will be used when this value is requested by a user.
89 * @get_attention_status: Called to get the current attention status of a slot.
90 * If this field is NULL, the value passed in the struct hotplug_slot_info
91 * will be used when this value is requested by a user.
92 * @get_latch_status: Called to get the current latch status of a slot.
93 * If this field is NULL, the value passed in the struct hotplug_slot_info
94 * will be used when this value is requested by a user.
95 * @get_adapter_status: Called to get see if an adapter is present in the slot or not.
96 * If this field is NULL, the value passed in the struct hotplug_slot_info
97 * will be used when this value is requested by a user.
1da177e4
LT		 98 * @get_max_bus_speed: Called to get the max bus speed for a slot.
99 * If this field is NULL, the value passed in the struct hotplug_slot_info
100 * will be used when this value is requested by a user.
101 * @get_cur_bus_speed: Called to get the current bus speed for a slot.
102 * If this field is NULL, the value passed in the struct hotplug_slot_info
103 * will be used when this value is requested by a user.
104 *
105 * The table of function pointers that is passed to the hotplug pci core by a
106 * hotplug pci driver. These functions are called by the hotplug pci core when
107 * the user wants to do something to a specific slot (query it for information,
108 * set an LED, enable / disable power, etc.)
109 */
110struct hotplug_slot_ops {
111 struct module *owner;
112 int (*enable_slot) (struct hotplug_slot *slot);
113 int (*disable_slot) (struct hotplug_slot *slot);
114 int (*set_attention_status) (struct hotplug_slot *slot, u8 value);
115 int (*hardware_test) (struct hotplug_slot *slot, u32 value);
116 int (*get_power_status) (struct hotplug_slot *slot, u8 *value);
117 int (*get_attention_status) (struct hotplug_slot *slot, u8 *value);
118 int (*get_latch_status) (struct hotplug_slot *slot, u8 *value);
119 int (*get_adapter_status) (struct hotplug_slot *slot, u8 *value);
1da177e4
LT		 120 int (*get_max_bus_speed) (struct hotplug_slot *slot, enum pci_bus_speed *value);
121 int (*get_cur_bus_speed) (struct hotplug_slot *slot, enum pci_bus_speed *value);
122};
123
124/**
125 * struct hotplug_slot_info - used to notify the hotplug pci core of the state of the slot
126 * @power: if power is enabled or not (1/0)
127 * @attention_status: if the attention light is enabled or not (1/0)
128 * @latch_status: if the latch (if any) is open or closed (1/0)
129 * @adapter_present: if there is a pci board present in the slot or not (1/0)
130 * @address: (domain << 16 | bus << 8 | dev)
131 *
132 * Used to notify the hotplug pci core of the status of a specific slot.
133 */
134struct hotplug_slot_info {
135 u8 power_status;
136 u8 attention_status;
137 u8 latch_status;
138 u8 adapter_status;
1da177e4
LT		 139 enum pci_bus_speed max_bus_speed;
140 enum pci_bus_speed cur_bus_speed;
141};
142
143/**
144 * struct hotplug_slot - used to register a physical slot with the hotplug pci core
1da177e4 145 * @ops: pointer to the &struct hotplug_slot_ops to be used for this slot
eaae4b3a 146 * @info: pointer to the &struct hotplug_slot_info for the initial values for
1da177e4
LT		 147 * this slot.
148 * @release: called during pci_hp_deregister to free memory allocated in a
149 * hotplug_slot structure.
150 * @private: used by the hotplug pci controller driver to store whatever it
151 * needs.
152 */
153struct hotplug_slot {
1da177e4
LT		 154 struct hotplug_slot_ops *ops;
155 struct hotplug_slot_info *info;
156 void (*release) (struct hotplug_slot *slot);
157 void *private;
158
159 /* Variables below this are for use only by the hotplug pci core. */
160 struct list_head slot_list;
f46753c5 161 struct pci_slot *pci_slot;
1da177e4
LT		 162};
163#define to_hotplug_slot(n) container_of(n, struct hotplug_slot, kobj)
164
0ad772ec
AC		 165static inline const char *hotplug_slot_name(const struct hotplug_slot *slot)
166{
167 return pci_slot_name(slot->pci_slot);
168}
169
1359f270
AC		 170extern int pci_hp_register(struct hotplug_slot *, struct pci_bus *, int nr,
171 const char *name);
f46753c5 172extern int pci_hp_deregister(struct hotplug_slot *slot);
660a0e8f
GKH		 173extern int __must_check pci_hp_change_slot_info (struct hotplug_slot *slot,
174 struct hotplug_slot_info *info);
1da177e4 175
e22b7350
KK		 176/* PCI Setting Record (Type 0) */
177struct hpp_type0 {
178 u32 revision;
179 u8 cache_line_size;
180 u8 latency_timer;
181 u8 enable_serr;
182 u8 enable_perr;
183};
184
185/* PCI-X Setting Record (Type 1) */
186struct hpp_type1 {
187 u32 revision;
188 u8 max_mem_read;
189 u8 avg_max_split;
190 u16 tot_max_split;
191};
192
193/* PCI Express Setting Record (Type 2) */
194struct hpp_type2 {
195 u32 revision;
196 u32 unc_err_mask_and;
197 u32 unc_err_mask_or;
198 u32 unc_err_sever_and;
199 u32 unc_err_sever_or;
200 u32 cor_err_mask_and;
201 u32 cor_err_mask_or;
202 u32 adv_err_cap_and;
203 u32 adv_err_cap_or;
204 u16 pci_exp_devctl_and;
205 u16 pci_exp_devctl_or;
206 u16 pci_exp_lnkctl_and;
207 u16 pci_exp_lnkctl_or;
208 u32 sec_unc_err_sever_and;
209 u32 sec_unc_err_sever_or;
210 u32 sec_unc_err_mask_and;
211 u32 sec_unc_err_mask_or;
212};
213
783c49fc 214struct hotplug_params {
e22b7350
KK		 215 struct hpp_type0 *t0; /* Type0: NULL if not available */
216 struct hpp_type1 *t1; /* Type1: NULL if not available */
217 struct hpp_type2 *t2; /* Type2: NULL if not available */
218 struct hpp_type0 type0_data;
219 struct hpp_type1 type1_data;
220 struct hpp_type2 type2_data;
783c49fc
KA		 221};
222
223#ifdef CONFIG_ACPI
224#include <acpi/acpi.h>
225#include <acpi/acpi_bus.h>
7430e34c 226extern acpi_status acpi_get_hp_params_from_firmware(struct pci_bus *bus,
783c49fc 227 struct hotplug_params *hpp);
ac9c052d 228int acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev, u32 flags);
783c49fc 229int acpi_root_bridge(acpi_handle handle);
e8c331e9
KK		 230int acpi_pci_check_ejectable(struct pci_bus *pbus, acpi_handle handle);
231int acpi_pci_detect_ejectable(struct pci_bus *pbus);
783c49fc 232#endif
1da177e4
LT		 233#endif
234
kernel source for telekom puls (alcatel/mediatek)