/* * 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> #include <linux/workqueue.h> #define MY_NAME "pciehp" extern bool pciehp_poll_mode; extern int pciehp_poll_time; extern bool pciehp_debug; extern bool pciehp_force; extern struct workqueue_struct *pciehp_wq; #define dbg(format, arg...) \ do { \ if (pciehp_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) #define ctrl_dbg(ctrl, format, arg...) \ do { \ if (pciehp_debug) \ dev_printk(KERN_DEBUG, &ctrl->pcie->device, \ format, ## arg); \ } while (0) #define ctrl_err(ctrl, format, arg...) \ dev_err(&ctrl->pcie->device, format, ## arg) #define ctrl_info(ctrl, format, arg...) \ dev_info(&ctrl->pcie->device, format, ## arg) #define ctrl_warn(ctrl, format, arg...) \ dev_warn(&ctrl->pcie->device, format, ## arg) #define SLOT_NAME_SIZE 10 struct slot { u8 state; struct controller *ctrl; struct hotplug_slot *hotplug_slot; 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 ctrl_lock; /* controller lock */ struct pcie_device *pcie; /* PCI Express port service */ struct slot *slot; wait_queue_head_t queue; /* sleep & wake process */ u32 slot_cap; struct timer_list poll_timer; unsigned int cmd_busy:1; unsigned int no_cmd_complete:1; unsigned int link_active_reporting:1; unsigned int notification_enabled:1; unsigned int power_fault_detected; }; #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 #define ATTN_BUTTN(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_ABP) #define POWER_CTRL(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_PCP) #define MRL_SENS(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_MRLSP) #define ATTN_LED(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_AIP) #define PWR_LED(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_PIP) #define HP_SUPR_RM(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_HPS) #define EMI(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_EIP) #define NO_CMD_CMPL(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_NCCS) #define PSN(ctrl) ((ctrl)->slot_cap >> 19) extern int pciehp_sysfs_enable_slot(struct slot *slot); extern int pciehp_sysfs_disable_slot(struct slot *slot); extern u8 pciehp_handle_attention_button(struct slot *p_slot); extern u8 pciehp_handle_switch_change(struct slot *p_slot); extern u8 pciehp_handle_presence_change(struct slot *p_slot); extern u8 pciehp_handle_power_fault(struct slot *p_slot); 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); struct controller *pcie_init(struct pcie_device *dev); int pcie_init_notification(struct controller *ctrl); int pciehp_enable_slot(struct slot *p_slot); int pciehp_disable_slot(struct slot *p_slot); int pcie_enable_notification(struct controller *ctrl); int pciehp_power_on_slot(struct slot *slot); int pciehp_power_off_slot(struct slot *slot); int pciehp_get_power_status(struct slot *slot, u8 *status); int pciehp_get_attention_status(struct slot *slot, u8 *status); int pciehp_set_attention_status(struct slot *slot, u8 status); int pciehp_get_latch_status(struct slot *slot, u8 *status); int pciehp_get_adapter_status(struct slot *slot, u8 *status); int pciehp_get_max_link_speed(struct slot *slot, enum pci_bus_speed *speed); int pciehp_get_max_link_width(struct slot *slot, enum pcie_link_width *val); int pciehp_get_cur_link_speed(struct slot *slot, enum pci_bus_speed *speed); int pciehp_get_cur_link_width(struct slot *slot, enum pcie_link_width *val); int pciehp_query_power_fault(struct slot *slot); void pciehp_green_led_on(struct slot *slot); void pciehp_green_led_off(struct slot *slot); void pciehp_green_led_blink(struct slot *slot); int pciehp_check_link_status(struct controller *ctrl); void pciehp_release_ctrl(struct controller *ctrl); static inline const char *slot_name(struct slot *slot) { return hotplug_slot_name(slot->hotplug_slot); } #ifdef CONFIG_ACPI #include <acpi/acpi.h> #include <acpi/acpi_bus.h> #include <linux/pci-acpi.h> extern void __init pciehp_acpi_slot_detection_init(void); extern int pciehp_acpi_slot_detection_check(struct pci_dev *dev); static inline void pciehp_firmware_init(void) { pciehp_acpi_slot_detection_init(); } #else #define pciehp_firmware_init() do {} while (0) static inline int pciehp_acpi_slot_detection_check(struct pci_dev *dev) { return 0; } #endif /* CONFIG_ACPI */ #endif /* _PCIEHP_H */