--- /dev/null
+/*
+ * ACPI PCI Hot Plug Controller Driver
+ *
+ * Copyright (C) 1995,2001 Compaq Computer Corporation
+ * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 2001 IBM Corp.
+ * Copyright (C) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com)
+ * Copyright (C) 2002,2003 Takayoshi Kochi (t-kochi@bq.jp.nec.com)
+ * Copyright (C) 2002,2003 NEC Corporation
+ * Copyright (C) 2003-2005 Matthew Wilcox (matthew.wilcox@hp.com)
+ * Copyright (C) 2003-2005 Hewlett Packard
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send feedback to <gregkh@us.ibm.com>,
+ * <t-kochi@bq.jp.nec.com>
+ *
+ */
+
+#ifndef _ACPIPHP_H
+#define _ACPIPHP_H
+
+#include <linux/acpi.h>
+#include <linux/mutex.h>
+#include <linux/pci_hotplug.h>
+
+struct acpiphp_context;
+struct acpiphp_bridge;
+struct acpiphp_slot;
+
+/*
+ * struct slot - slot information for each *physical* slot
+ */
+struct slot {
+ struct hotplug_slot *hotplug_slot;
+ struct acpiphp_slot *acpi_slot;
+ struct hotplug_slot_info info;
+ unsigned int sun; /* ACPI _SUN (Slot User Number) value */
+};
+
+static inline const char *slot_name(struct slot *slot)
+{
+ return hotplug_slot_name(slot->hotplug_slot);
+}
+
+/*
+ * struct acpiphp_bridge - PCI bridge information
+ *
+ * for each bridge device in ACPI namespace
+ */
+struct acpiphp_bridge {
+ struct list_head list;
+ struct list_head slots;
+ struct kref ref;
+
+ struct acpiphp_context *context;
+
+ int nr_slots;
+
+ /* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
+ struct pci_bus *pci_bus;
+
+ /* PCI-to-PCI bridge device */
+ struct pci_dev *pci_dev;
+
+ bool is_going_away;
+};
+
+
+/*
+ * struct acpiphp_slot - PCI slot information
+ *
+ * PCI slot information for each *physical* PCI slot
+ */
+struct acpiphp_slot {
+ struct list_head node;
+ struct pci_bus *bus;
+ struct list_head funcs; /* one slot may have different
+ objects (i.e. for each function) */
+ struct slot *slot;
+
+ u8 device; /* pci device# */
+ u32 flags; /* see below */
+};
+
+
+/*
+ * struct acpiphp_func - PCI function information
+ *
+ * PCI function information for each object in ACPI namespace
+ * typically 8 objects per slot (i.e. for each PCI function)
+ */
+struct acpiphp_func {
+ struct acpiphp_bridge *parent;
+ struct acpiphp_slot *slot;
+
+ struct list_head sibling;
+
+ u8 function; /* pci function# */
+ u32 flags; /* see below */
+};
+
+struct acpiphp_context {
+ struct acpi_hotplug_context hp;
+ struct acpiphp_func func;
+ struct acpiphp_bridge *bridge;
+ unsigned int refcount;
+};
+
+static inline struct acpiphp_context *to_acpiphp_context(struct acpi_hotplug_context *hp)
+{
+ return container_of(hp, struct acpiphp_context, hp);
+}
+
+static inline struct acpiphp_context *func_to_context(struct acpiphp_func *func)
+{
+ return container_of(func, struct acpiphp_context, func);
+}
+
+static inline struct acpi_device *func_to_acpi_device(struct acpiphp_func *func)
+{
+ return func_to_context(func)->hp.self;
+}
+
+static inline acpi_handle func_to_handle(struct acpiphp_func *func)
+{
+ return func_to_acpi_device(func)->handle;
+}
+
+struct acpiphp_root_context {
+ struct acpi_hotplug_context hp;
+ struct acpiphp_bridge *root_bridge;
+};
+
+static inline struct acpiphp_root_context *to_acpiphp_root_context(struct acpi_hotplug_context *hp)
+{
+ return container_of(hp, struct acpiphp_root_context, hp);
+}
+
+/*
+ * struct acpiphp_attention_info - device specific attention registration
+ *
+ * ACPI has no generic method of setting/getting attention status
+ * this allows for device specific driver registration
+ */
+struct acpiphp_attention_info
+{
+ int (*set_attn)(struct hotplug_slot *slot, u8 status);
+ int (*get_attn)(struct hotplug_slot *slot, u8 *status);
+ struct module *owner;
+};
+
+/* ACPI _STA method value (ignore bit 4; battery present) */
+#define ACPI_STA_ALL (0x0000000f)
+
+/* slot flags */
+
+#define SLOT_ENABLED (0x00000001)
+#define SLOT_IS_GOING_AWAY (0x00000002)
+
+/* function flags */
+
+#define FUNC_HAS_STA (0x00000001)
+#define FUNC_HAS_EJ0 (0x00000002)
+
+/* function prototypes */
+
+/* acpiphp_core.c */
+int acpiphp_register_attention(struct acpiphp_attention_info*info);
+int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
+int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot, unsigned int sun);
+void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
+
+/* acpiphp_glue.c */
+typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
+
+int acpiphp_enable_slot(struct acpiphp_slot *slot);
+int acpiphp_disable_slot(struct acpiphp_slot *slot);
+u8 acpiphp_get_power_status(struct acpiphp_slot *slot);
+u8 acpiphp_get_attention_status(struct acpiphp_slot *slot);
+u8 acpiphp_get_latch_status(struct acpiphp_slot *slot);
+u8 acpiphp_get_adapter_status(struct acpiphp_slot *slot);
+
+/* variables */
+extern bool acpiphp_disabled;
+
+#endif /* _ACPIPHP_H */
Code Review / kvmfornfv.git / blobdiff