diff options
Diffstat (limited to 'drivers/pci/hotplug/acpiphp.h')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp.h | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h new file mode 100644 index 000000000000..d9499874c8a9 --- /dev/null +++ b/drivers/pci/hotplug/acpiphp.h @@ -0,0 +1,268 @@ +/* + * 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 + * + * 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/kobject.h> /* for KOBJ_NAME_LEN */ +#include "pci_hotplug.h" + +#define dbg(format, arg...) \ + do { \ + if (acpiphp_debug) \ + printk(KERN_DEBUG "%s: " format, \ + MY_NAME , ## arg); \ + } while (0) +#define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg) +#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg) +#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg) + +/* name size which is used for entries in pcihpfs */ +#define SLOT_NAME_SIZE KOBJ_NAME_LEN /* {_SUN} */ + +struct acpiphp_bridge; +struct acpiphp_slot; +struct pci_resource; + +/* + * struct slot - slot information for each *physical* slot + */ +struct slot { + u8 number; + struct hotplug_slot *hotplug_slot; + struct list_head slot_list; + + struct acpiphp_slot *acpi_slot; +}; + +/* + * struct pci_resource - describes pci resource (mem, pfmem, io, bus) + */ +struct pci_resource { + struct pci_resource * next; + u64 base; + u32 length; +}; + +/** + * struct hpp_param - ACPI 2.0 _HPP Hot Plug Parameters + * @cache_line_size in DWORD + * @latency_timer in PCI clock + * @enable_SERR 0 or 1 + * @enable_PERR 0 or 1 + */ +struct hpp_param { + u8 cache_line_size; + u8 latency_timer; + u8 enable_SERR; + u8 enable_PERR; +}; + + +/** + * struct acpiphp_bridge - PCI bridge information + * + * for each bridge device in ACPI namespace + */ +struct acpiphp_bridge { + struct list_head list; + acpi_handle handle; + struct acpiphp_slot *slots; + int type; + int nr_slots; + + u8 seg; + u8 bus; + u8 sub; + + u32 flags; + + /* 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; + + /* ACPI 2.0 _HPP parameters */ + struct hpp_param hpp; + + spinlock_t res_lock; + + /* available resources on this bus */ + struct pci_resource *mem_head; + struct pci_resource *p_mem_head; + struct pci_resource *io_head; + struct pci_resource *bus_head; +}; + + +/** + * struct acpiphp_slot - PCI slot information + * + * PCI slot information for each *physical* PCI slot + */ +struct acpiphp_slot { + struct acpiphp_slot *next; + struct acpiphp_bridge *bridge; /* parent */ + struct list_head funcs; /* one slot may have different + objects (i.e. for each function) */ + struct semaphore crit_sect; + + u32 id; /* slot id (serial #) for hotplug core */ + u8 device; /* pci device# */ + + u32 sun; /* ACPI _SUN (slot unique number) */ + u32 slotno; /* slot number relative to bridge */ + 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_slot *slot; /* parent */ + + struct list_head sibling; + struct pci_dev *pci_dev; + + acpi_handle handle; + + u8 function; /* pci function# */ + u32 flags; /* see below */ + + /* resources used for this function */ + struct pci_resource *mem_head; + struct pci_resource *p_mem_head; + struct pci_resource *io_head; + struct pci_resource *bus_head; +}; + +/** + * 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; +}; + +/* PCI bus bridge HID */ +#define ACPI_PCI_HOST_HID "PNP0A03" + +/* PCI BRIDGE type */ +#define BRIDGE_TYPE_HOST 0 +#define BRIDGE_TYPE_P2P 1 + +/* ACPI _STA method value (ignore bit 4; battery present) */ +#define ACPI_STA_PRESENT (0x00000001) +#define ACPI_STA_ENABLED (0x00000002) +#define ACPI_STA_SHOW_IN_UI (0x00000004) +#define ACPI_STA_FUNCTIONING (0x00000008) +#define ACPI_STA_ALL (0x0000000f) + +/* bridge flags */ +#define BRIDGE_HAS_STA (0x00000001) +#define BRIDGE_HAS_EJ0 (0x00000002) +#define BRIDGE_HAS_HPP (0x00000004) +#define BRIDGE_HAS_PS0 (0x00000010) +#define BRIDGE_HAS_PS1 (0x00000020) +#define BRIDGE_HAS_PS2 (0x00000040) +#define BRIDGE_HAS_PS3 (0x00000080) + +/* slot flags */ + +#define SLOT_POWEREDON (0x00000001) +#define SLOT_ENABLED (0x00000002) +#define SLOT_MULTIFUNCTION (0x00000004) + +/* function flags */ + +#define FUNC_HAS_STA (0x00000001) +#define FUNC_HAS_EJ0 (0x00000002) +#define FUNC_HAS_PS0 (0x00000010) +#define FUNC_HAS_PS1 (0x00000020) +#define FUNC_HAS_PS2 (0x00000040) +#define FUNC_HAS_PS3 (0x00000080) + +/* function prototypes */ + +/* acpiphp_core.c */ +extern int acpiphp_register_attention(struct acpiphp_attention_info*info); +extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info); + +/* acpiphp_glue.c */ +extern int acpiphp_glue_init (void); +extern void acpiphp_glue_exit (void); +extern int acpiphp_get_num_slots (void); +extern struct acpiphp_slot *get_slot_from_id (int id); +typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data); + +extern int acpiphp_enable_slot (struct acpiphp_slot *slot); +extern int acpiphp_disable_slot (struct acpiphp_slot *slot); +extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot); +extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot); +extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot); +extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot); +extern u32 acpiphp_get_address (struct acpiphp_slot *slot); + +/* acpiphp_pci.c */ +extern struct pci_dev *acpiphp_allocate_pcidev (struct pci_bus *pbus, int dev, int fn); +extern int acpiphp_configure_slot (struct acpiphp_slot *slot); +extern int acpiphp_configure_function (struct acpiphp_func *func); +extern void acpiphp_unconfigure_function (struct acpiphp_func *func); +extern int acpiphp_detect_pci_resource (struct acpiphp_bridge *bridge); +extern int acpiphp_init_func_resource (struct acpiphp_func *func); + +/* acpiphp_res.c */ +extern struct pci_resource *acpiphp_get_io_resource (struct pci_resource **head, u32 size); +extern struct pci_resource *acpiphp_get_resource (struct pci_resource **head, u32 size); +extern struct pci_resource *acpiphp_get_resource_with_base (struct pci_resource **head, u64 base, u32 size); +extern int acpiphp_resource_sort_and_combine (struct pci_resource **head); +extern struct pci_resource *acpiphp_make_resource (u64 base, u32 length); +extern void acpiphp_move_resource (struct pci_resource **from, struct pci_resource **to); +extern void acpiphp_free_resource (struct pci_resource **res); +extern void acpiphp_dump_resource (struct acpiphp_bridge *bridge); /* debug */ +extern void acpiphp_dump_func_resource (struct acpiphp_func *func); /* debug */ + +/* variables */ +extern int acpiphp_debug; + +#endif /* _ACPIPHP_H */ |