litmus-rt.git - The LITMUS^RT kernel.

	Commit message (Expand)	Author	Age
*	NetLabel: fix a cache race condition	paul.moore@hp.com	2006-10-12
*	[NetLabel]: correct improper handling of non-NetLabel peer contexts	Paul Moore	2006-09-25
*	[NetLabel]: core NetLabel subsystem	Paul Moore	2006-09-22

/* * PCI Express 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) 2003-2004 Intel 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 <greg@kroah.com>, <kristen.c.accardi@intel.com> * */ #ifndef _PCIEHP_H #define _PCIEHP_H #include <linux/types.h> #include <linux/pci.h> #include <linux/pci_hotplug.h> #include <linux/delay.h> #include <linux/sched.h> /* signal_pending() */ #include <linux/pcieport_if.h> #include <linux/mutex.h> #define MY_NAME "pciehp" extern int pciehp_poll_mode; extern int pciehp_poll_time; extern int pciehp_debug; extern int pciehp_force; extern struct workqueue_struct *pciehp_wq; #define dbg(format, arg...) \ do { \ if (pciehp_debug) \ printk("%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) #define SLOT_NAME_SIZE 10 struct slot { u8 bus; u8 device; u32 number; u8 state; struct timer_list task_event; u8 hp_slot; struct controller *ctrl; struct hpc_ops *hpc_ops; struct hotplug_slot *hotplug_slot; struct list_head slot_list; char name[SLOT_NAME_SIZE]; unsigned long last_emi_toggle; struct delayed_work work; /* work for button event */ struct mutex lock; }; struct event_info { u32 event_type; struct slot *p_slot; struct work_struct work; }; struct controller { struct mutex crit_sect; /* critical section mutex */ struct mutex ctrl_lock; /* controller lock */ int num_slots; /* Number of slots on ctlr */ int slot_num_inc; /* 1 or -1 */ struct pci_dev *pci_dev; struct list_head slot_list; struct hpc_ops *hpc_ops; wait_queue_head_t queue; /* sleep & wake process */ u8 slot_device_offset; u32 first_slot; /* First physical slot number */ /* PCIE only has 1 slot */ u8 slot_bus; /* Bus where the slots handled by this controller sit */ u8 ctrlcap; u8 cap_base; struct timer_list poll_timer; volatile int cmd_busy; spinlock_t lock; }; #define INT_BUTTON_IGNORE 0 #define INT_PRESENCE_ON 1 #define INT_PRESENCE_OFF 2 #define INT_SWITCH_CLOSE 3 #define INT_SWITCH_OPEN 4 #define INT_POWER_FAULT 5 #define INT_POWER_FAULT_CLEAR 6 #define INT_BUTTON_PRESS 7 #define INT_BUTTON_RELEASE 8 #define INT_BUTTON_CANCEL 9 #define STATIC_STATE 0 #define BLINKINGON_STATE 1 #define BLINKINGOFF_STATE 2 #define POWERON_STATE 3 #define POWEROFF_STATE 4 /* Error messages */ #define INTERLOCK_OPEN 0x00000002 #define ADD_NOT_SUPPORTED 0x00000003 #define CARD_FUNCTIONING 0x00000005 #define ADAPTER_NOT_SAME 0x00000006 #define NO_ADAPTER_PRESENT 0x00000009 #define NOT_ENOUGH_RESOURCES 0x0000000B #define DEVICE_TYPE_NOT_SUPPORTED 0x0000000C #define WRONG_BUS_FREQUENCY 0x0000000D #define POWER_FAILURE 0x0000000E /* Field definitions in Slot Capabilities Register */ #define ATTN_BUTTN_PRSN 0x00000001 #define PWR_CTRL_PRSN 0x00000002 #define MRL_SENS_PRSN 0x00000004 #define ATTN_LED_PRSN 0x00000008 #define PWR_LED_PRSN 0x00000010 #define HP_SUPR_RM_SUP 0x00000020 #define EMI_PRSN 0x00020000 #define ATTN_BUTTN(cap) (cap & ATTN_BUTTN_PRSN) #define POWER_CTRL(cap) (cap & PWR_CTRL_PRSN) #define MRL_SENS(cap) (cap & MRL_SENS_PRSN) #define ATTN_LED(cap) (cap & ATTN_LED_PRSN) #define PWR_LED(cap) (cap & PWR_LED_PRSN) #define HP_SUPR_RM(cap) (cap & HP_SUPR_RM_SUP) #define EMI(cap) (cap & EMI_PRSN) extern int pciehp_sysfs_enable_slot(struct slot *slot); extern int pciehp_sysfs_disable_slot(struct slot *slot); extern u8 pciehp_handle_attention_button(u8 hp_slot, struct controller *ctrl); extern u8 pciehp_handle_switch_change(u8 hp_slot, struct controller *ctrl); extern u8 pciehp_handle_presence_change(u8 hp_slot, struct controller *ctrl); extern u8 pciehp_handle_power_fault(u8 hp_slot, struct controller *ctrl); extern int pciehp_configure_device(struct slot *p_slot); extern int pciehp_unconfigure_device(struct slot *p_slot); extern void pciehp_queue_pushbutton_work(struct work_struct *work); int pcie_init(struct controller *ctrl, struct pcie_device *dev); int pciehp_enable_slot(struct slot *p_slot); int pciehp_disable_slot(struct slot *p_slot); int pcie_init_hardware_part2(struct controller *ctrl, struct pcie_device *dev); static inline struct slot *pciehp_find_slot(struct controller *ctrl, u8 device) { struct slot *slot; list_for_each_entry(slot, &ctrl->slot_list, slot_list) { if (slot->device == device) return slot; } err("%s: slot (device=0x%x) not found\n", __FUNCTION__, device); return NULL; } struct hpc_ops { int (*power_on_slot)(struct slot *slot); int (*power_off_slot)(struct slot *slot); int (*get_power_status)(struct slot *slot, u8 *status); int (*get_attention_status)(struct slot *slot, u8 *status); int (*set_attention_status)(struct slot *slot, u8 status); int (*get_latch_status)(struct slot *slot, u8 *status); int (*get_adapter_status)(struct slot *slot, u8 *status); int (*get_emi_status)(struct slot *slot, u8 *status); int (*toggle_emi)(struct slot *slot); int (*get_max_bus_speed)(struct slot *slot, enum pci_bus_speed *speed); int (*get_cur_bus_speed)(struct slot *slot, enum pci_bus_speed *speed); int (*get_max_lnk_width)(struct slot *slot, enum pcie_link_width *val); int (*get_cur_lnk_width)(struct slot *slot, enum pcie_link_width *val); int (*query_power_fault)(struct slot *slot); void (*green_led_on)(struct slot *slot); void (*green_led_off)(struct slot *slot); void (*green_led_blink)(struct slot *slot); void (*release_ctlr)(struct controller *ctrl); int (*check_lnk_status)(struct controller *ctrl); }; #ifdef CONFIG_ACPI #include <acpi/acpi.h> #include <acpi/acpi_bus.h> #include <acpi/actypes.h> #include <linux/pci-acpi.h> #define pciehp_get_hp_hw_control_from_firmware(dev) \ pciehp_acpi_get_hp_hw_control_from_firmware(dev) static inline int pciehp_get_hp_params_from_firmware(struct pci_dev *dev, struct hotplug_params *hpp) { if (ACPI_FAILURE(acpi_get_hp_params_from_firmware(dev->bus, hpp))) return -ENODEV; return 0; } #else #define pciehp_get_hp_hw_control_from_firmware(dev) 0 #define pciehp_get_hp_params_from_firmware(dev, hpp) (-ENODEV) #endif /* CONFIG_ACPI */ #endif /* _PCIEHP_H */