diff options
Diffstat (limited to 'drivers/pci/hotplug/pciehp.h')
| -rw-r--r-- | drivers/pci/hotplug/pciehp.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h new file mode 100644 index 000000000..b11521953 --- /dev/null +++ b/drivers/pci/hotplug/pciehp.h @@ -0,0 +1,187 @@ +/* + * 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; + +#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 mutex hotplug_lock; + struct workqueue_struct *wq; +}; + +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; + u16 slot_ctrl; + struct timer_list poll_timer; + unsigned long cmd_started; /* jiffies */ + unsigned int cmd_busy: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 INT_LINK_UP 10 +#define INT_LINK_DOWN 11 + +#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 & PCI_EXP_SLTCAP_PSN) >> 19) + +int pciehp_sysfs_enable_slot(struct slot *slot); +int pciehp_sysfs_disable_slot(struct slot *slot); +u8 pciehp_handle_attention_button(struct slot *p_slot); +u8 pciehp_handle_switch_change(struct slot *p_slot); +u8 pciehp_handle_presence_change(struct slot *p_slot); +u8 pciehp_handle_power_fault(struct slot *p_slot); +void pciehp_handle_linkstate_change(struct slot *p_slot); +int pciehp_configure_device(struct slot *p_slot); +int pciehp_unconfigure_device(struct slot *p_slot); +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); +void pcie_enable_notification(struct controller *ctrl); +int pciehp_power_on_slot(struct slot *slot); +void pciehp_power_off_slot(struct slot *slot); +void pciehp_get_power_status(struct slot *slot, u8 *status); +void pciehp_get_attention_status(struct slot *slot, u8 *status); + +void pciehp_set_attention_status(struct slot *slot, u8 status); +void pciehp_get_latch_status(struct slot *slot, u8 *status); +void pciehp_get_adapter_status(struct slot *slot, u8 *status); +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); +bool pciehp_check_link_active(struct controller *ctrl); +void pciehp_release_ctrl(struct controller *ctrl); +int pciehp_reset_slot(struct slot *slot, int probe); + +static inline const char *slot_name(struct slot *slot) +{ + return hotplug_slot_name(slot->hotplug_slot); +} + +#ifdef CONFIG_ACPI +#include <linux/pci-acpi.h> + +void __init pciehp_acpi_slot_detection_init(void); +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 */ |