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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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fca6825ad7
We always look up hotplug_params with decode_hpp() immediately before using them, so we don't need to save them in the acpiphp_bridge struct. This patch follows the example of program_fw_provided_values() in pciehp_pci.c and shpchp_pci.c by just keeping the params on the stack while we need them. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Reviewed-by: Alex Chiang <achiang@hp.com> Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
220 lines
6.1 KiB
C
220 lines
6.1 KiB
C
/*
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* ACPI PCI Hot Plug Controller Driver
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*
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* Copyright (C) 1995,2001 Compaq Computer Corporation
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* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (C) 2001 IBM Corp.
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* Copyright (C) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com)
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* Copyright (C) 2002,2003 Takayoshi Kochi (t-kochi@bq.jp.nec.com)
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* Copyright (C) 2002,2003 NEC Corporation
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* Copyright (C) 2003-2005 Matthew Wilcox (matthew.wilcox@hp.com)
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* Copyright (C) 2003-2005 Hewlett Packard
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <gregkh@us.ibm.com>,
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* <t-kochi@bq.jp.nec.com>
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*
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*/
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#ifndef _ACPIPHP_H
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#define _ACPIPHP_H
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#include <linux/acpi.h>
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#include <linux/kobject.h>
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#include <linux/mutex.h>
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#include <linux/pci_hotplug.h>
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#define dbg(format, arg...) \
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do { \
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if (acpiphp_debug) \
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printk(KERN_DEBUG "%s: " format, \
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MY_NAME , ## arg); \
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} while (0)
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#define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg)
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#define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
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#define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
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struct acpiphp_bridge;
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struct acpiphp_slot;
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/*
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* struct slot - slot information for each *physical* slot
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*/
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struct slot {
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struct hotplug_slot *hotplug_slot;
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struct acpiphp_slot *acpi_slot;
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struct hotplug_slot_info info;
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};
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static inline const char *slot_name(struct slot *slot)
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{
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return hotplug_slot_name(slot->hotplug_slot);
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}
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/*
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* struct acpiphp_bridge - PCI bridge information
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*
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* for each bridge device in ACPI namespace
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*/
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struct acpiphp_bridge {
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struct list_head list;
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acpi_handle handle;
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struct acpiphp_slot *slots;
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/* Ejectable PCI-to-PCI bridge (PCI bridge and PCI function) */
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struct acpiphp_func *func;
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int type;
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int nr_slots;
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u32 flags;
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/* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
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struct pci_bus *pci_bus;
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/* PCI-to-PCI bridge device */
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struct pci_dev *pci_dev;
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spinlock_t res_lock;
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};
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/*
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* struct acpiphp_slot - PCI slot information
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*
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* PCI slot information for each *physical* PCI slot
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*/
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struct acpiphp_slot {
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struct acpiphp_slot *next;
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struct acpiphp_bridge *bridge; /* parent */
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struct list_head funcs; /* one slot may have different
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objects (i.e. for each function) */
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struct slot *slot;
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struct mutex crit_sect;
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u8 device; /* pci device# */
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unsigned long long sun; /* ACPI _SUN (slot unique number) */
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u32 flags; /* see below */
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};
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/*
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* struct acpiphp_func - PCI function information
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*
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* PCI function information for each object in ACPI namespace
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* typically 8 objects per slot (i.e. for each PCI function)
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*/
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struct acpiphp_func {
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struct acpiphp_slot *slot; /* parent */
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struct acpiphp_bridge *bridge; /* Ejectable PCI-to-PCI bridge */
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struct list_head sibling;
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struct notifier_block nb;
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acpi_handle handle;
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u8 function; /* pci function# */
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u32 flags; /* see below */
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};
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/*
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* struct acpiphp_attention_info - device specific attention registration
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*
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* ACPI has no generic method of setting/getting attention status
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* this allows for device specific driver registration
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*/
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struct acpiphp_attention_info
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{
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int (*set_attn)(struct hotplug_slot *slot, u8 status);
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int (*get_attn)(struct hotplug_slot *slot, u8 *status);
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struct module *owner;
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};
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struct acpiphp_ioapic {
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struct pci_dev *dev;
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u32 gsi_base;
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struct list_head list;
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};
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/* PCI bus bridge HID */
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#define ACPI_PCI_HOST_HID "PNP0A03"
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/* PCI BRIDGE type */
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#define BRIDGE_TYPE_HOST 0
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#define BRIDGE_TYPE_P2P 1
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/* ACPI _STA method value (ignore bit 4; battery present) */
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#define ACPI_STA_PRESENT (0x00000001)
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#define ACPI_STA_ENABLED (0x00000002)
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#define ACPI_STA_SHOW_IN_UI (0x00000004)
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#define ACPI_STA_FUNCTIONING (0x00000008)
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#define ACPI_STA_ALL (0x0000000f)
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/* bridge flags */
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#define BRIDGE_HAS_STA (0x00000001)
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#define BRIDGE_HAS_EJ0 (0x00000002)
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#define BRIDGE_HAS_HPP (0x00000004)
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#define BRIDGE_HAS_PS0 (0x00000010)
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#define BRIDGE_HAS_PS1 (0x00000020)
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#define BRIDGE_HAS_PS2 (0x00000040)
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#define BRIDGE_HAS_PS3 (0x00000080)
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/* slot flags */
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#define SLOT_POWEREDON (0x00000001)
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#define SLOT_ENABLED (0x00000002)
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#define SLOT_MULTIFUNCTION (0x00000004)
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/* function flags */
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#define FUNC_HAS_STA (0x00000001)
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#define FUNC_HAS_EJ0 (0x00000002)
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#define FUNC_HAS_PS0 (0x00000010)
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#define FUNC_HAS_PS1 (0x00000020)
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#define FUNC_HAS_PS2 (0x00000040)
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#define FUNC_HAS_PS3 (0x00000080)
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#define FUNC_HAS_DCK (0x00000100)
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/* function prototypes */
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/* acpiphp_core.c */
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extern int acpiphp_register_attention(struct acpiphp_attention_info*info);
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extern int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
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extern int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot);
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extern void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
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/* acpiphp_glue.c */
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extern int acpiphp_glue_init (void);
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extern void acpiphp_glue_exit (void);
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extern int acpiphp_get_num_slots (void);
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typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data);
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extern int acpiphp_enable_slot (struct acpiphp_slot *slot);
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extern int acpiphp_disable_slot (struct acpiphp_slot *slot);
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extern int acpiphp_eject_slot (struct acpiphp_slot *slot);
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extern u8 acpiphp_get_power_status (struct acpiphp_slot *slot);
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extern u8 acpiphp_get_attention_status (struct acpiphp_slot *slot);
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extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
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extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
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/* variables */
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extern int acpiphp_debug;
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#endif /* _ACPIPHP_H */
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