acpiphp.h 5.2 KB

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  1. /*
  2. * ACPI PCI Hot Plug Controller Driver
  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. * Copyright (C) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com)
  8. * Copyright (C) 2002,2003 Takayoshi Kochi (t-kochi@bq.jp.nec.com)
  9. * Copyright (C) 2002,2003 NEC Corporation
  10. * Copyright (C) 2003-2005 Matthew Wilcox (matthew.wilcox@hp.com)
  11. * Copyright (C) 2003-2005 Hewlett Packard
  12. *
  13. * All rights reserved.
  14. *
  15. * This program is free software; you can redistribute it and/or modify
  16. * it under the terms of the GNU General Public License as published by
  17. * the Free Software Foundation; either version 2 of the License, or (at
  18. * your option) any later version.
  19. *
  20. * This program is distributed in the hope that it will be useful, but
  21. * WITHOUT ANY WARRANTY; without even the implied warranty of
  22. * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  23. * NON INFRINGEMENT. See the GNU General Public License for more
  24. * details.
  25. *
  26. * You should have received a copy of the GNU General Public License
  27. * along with this program; if not, write to the Free Software
  28. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  29. *
  30. * Send feedback to <gregkh@us.ibm.com>,
  31. * <t-kochi@bq.jp.nec.com>
  32. *
  33. */
  34. #ifndef _ACPIPHP_H
  35. #define _ACPIPHP_H
  36. #include <linux/acpi.h>
  37. #include <linux/mutex.h>
  38. #include <linux/pci_hotplug.h>
  39. #define dbg(format, arg...) \
  40. do { \
  41. if (acpiphp_debug) \
  42. printk(KERN_DEBUG "%s: " format, \
  43. MY_NAME , ## arg); \
  44. } while (0)
  45. #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg)
  46. #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
  47. #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
  48. struct acpiphp_context;
  49. struct acpiphp_bridge;
  50. struct acpiphp_slot;
  51. /*
  52. * struct slot - slot information for each *physical* slot
  53. */
  54. struct slot {
  55. struct hotplug_slot *hotplug_slot;
  56. struct acpiphp_slot *acpi_slot;
  57. struct hotplug_slot_info info;
  58. unsigned int sun; /* ACPI _SUN (Slot User Number) value */
  59. };
  60. static inline const char *slot_name(struct slot *slot)
  61. {
  62. return hotplug_slot_name(slot->hotplug_slot);
  63. }
  64. /*
  65. * struct acpiphp_bridge - PCI bridge information
  66. *
  67. * for each bridge device in ACPI namespace
  68. */
  69. struct acpiphp_bridge {
  70. struct list_head list;
  71. struct list_head slots;
  72. struct kref ref;
  73. struct acpiphp_context *context;
  74. int nr_slots;
  75. /* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
  76. struct pci_bus *pci_bus;
  77. /* PCI-to-PCI bridge device */
  78. struct pci_dev *pci_dev;
  79. };
  80. /*
  81. * struct acpiphp_slot - PCI slot information
  82. *
  83. * PCI slot information for each *physical* PCI slot
  84. */
  85. struct acpiphp_slot {
  86. struct list_head node;
  87. struct pci_bus *bus;
  88. struct list_head funcs; /* one slot may have different
  89. objects (i.e. for each function) */
  90. struct slot *slot;
  91. struct mutex crit_sect;
  92. u8 device; /* pci device# */
  93. u32 flags; /* see below */
  94. };
  95. /*
  96. * struct acpiphp_func - PCI function information
  97. *
  98. * PCI function information for each object in ACPI namespace
  99. * typically 8 objects per slot (i.e. for each PCI function)
  100. */
  101. struct acpiphp_func {
  102. struct acpiphp_bridge *parent;
  103. struct acpiphp_slot *slot;
  104. struct list_head sibling;
  105. u8 function; /* pci function# */
  106. u32 flags; /* see below */
  107. };
  108. struct acpiphp_context {
  109. acpi_handle handle;
  110. struct acpiphp_func func;
  111. struct acpiphp_bridge *bridge;
  112. unsigned int refcount;
  113. };
  114. static inline struct acpiphp_context *func_to_context(struct acpiphp_func *func)
  115. {
  116. return container_of(func, struct acpiphp_context, func);
  117. }
  118. static inline acpi_handle func_to_handle(struct acpiphp_func *func)
  119. {
  120. return func_to_context(func)->handle;
  121. }
  122. /*
  123. * struct acpiphp_attention_info - device specific attention registration
  124. *
  125. * ACPI has no generic method of setting/getting attention status
  126. * this allows for device specific driver registration
  127. */
  128. struct acpiphp_attention_info
  129. {
  130. int (*set_attn)(struct hotplug_slot *slot, u8 status);
  131. int (*get_attn)(struct hotplug_slot *slot, u8 *status);
  132. struct module *owner;
  133. };
  134. /* ACPI _STA method value (ignore bit 4; battery present) */
  135. #define ACPI_STA_ALL (0x0000000f)
  136. /* slot flags */
  137. #define SLOT_ENABLED (0x00000001)
  138. /* function flags */
  139. #define FUNC_HAS_STA (0x00000001)
  140. #define FUNC_HAS_EJ0 (0x00000002)
  141. #define FUNC_HAS_DCK (0x00000004)
  142. /* function prototypes */
  143. /* acpiphp_core.c */
  144. int acpiphp_register_attention(struct acpiphp_attention_info*info);
  145. int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
  146. int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot, unsigned int sun);
  147. void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
  148. /* acpiphp_glue.c */
  149. typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
  150. int acpiphp_enable_slot(struct acpiphp_slot *slot);
  151. int acpiphp_disable_and_eject_slot(struct acpiphp_slot *slot);
  152. u8 acpiphp_get_power_status(struct acpiphp_slot *slot);
  153. u8 acpiphp_get_attention_status(struct acpiphp_slot *slot);
  154. u8 acpiphp_get_latch_status(struct acpiphp_slot *slot);
  155. u8 acpiphp_get_adapter_status(struct acpiphp_slot *slot);
  156. /* variables */
  157. extern bool acpiphp_debug;
  158. extern bool acpiphp_disabled;
  159. #endif /* _ACPIPHP_H */