11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PCI Express Hot Plug Controller Driver 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1995,2001 Compaq Computer Corporation 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2001 IBM Corp. 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2003-2004 Intel Corporation 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * All rights reserved. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation; either version 2 of the License, or (at 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * your option) any later version. 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, but 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * WITHOUT ANY WARRANTY; without even the implied warranty of 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NON INFRINGEMENT. See the GNU General Public License for more 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * details. 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * along with this program; if not, write to the Free Software 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 268cf4c19523b7694c88bba716d88fb659fa702411Kristen Accardi * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifndef _PCIEHP_H 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define _PCIEHP_H 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pci.h> 347a54f25cef6c763f16c9fd49ae382de162147873Greg Kroah-Hartman#include <linux/pci_hotplug.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 36de25968cc87cc5b76d09de8b4cbddc8f24fcf5f7Tim Schmielau#include <linux/sched.h> /* signal_pending() */ 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pcieport_if.h> 386aa4cdd07139ba4d5b89139b0070d795cc4dea88Ingo Molnar#include <linux/mutex.h> 39a827ea307b147aeb050803433b3f6842582c6cedTejun Heo#include <linux/workqueue.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MY_NAME "pciehp" 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4390ab5ee94171b3e28de6bb42ee30b527014e0be7Rusty Russellextern bool pciehp_poll_mode; 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int pciehp_poll_time; 4590ab5ee94171b3e28de6bb42ee30b527014e0be7Rusty Russellextern bool pciehp_debug; 4690ab5ee94171b3e28de6bb42ee30b527014e0be7Rusty Russellextern bool pciehp_force; 475d386e1ac4025b4bcc6bad6811e771cb76064dfeKenji Kaneshigeextern struct workqueue_struct *pciehp_wq; 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4915232ece5566710d24c81ac3dd629f7556a92818Kenji Kaneshige#define dbg(format, arg...) \ 501c35b8e538cb6259accb215099cdb673310cad84Frank Seideldo { \ 511c35b8e538cb6259accb215099cdb673310cad84Frank Seidel if (pciehp_debug) \ 521c35b8e538cb6259accb215099cdb673310cad84Frank Seidel printk(KERN_DEBUG "%s: " format, MY_NAME , ## arg); \ 531c35b8e538cb6259accb215099cdb673310cad84Frank Seidel} while (0) 5415232ece5566710d24c81ac3dd629f7556a92818Kenji Kaneshige#define err(format, arg...) \ 5515232ece5566710d24c81ac3dd629f7556a92818Kenji Kaneshige printk(KERN_ERR "%s: " format, MY_NAME , ## arg) 5615232ece5566710d24c81ac3dd629f7556a92818Kenji Kaneshige#define info(format, arg...) \ 5715232ece5566710d24c81ac3dd629f7556a92818Kenji Kaneshige printk(KERN_INFO "%s: " format, MY_NAME , ## arg) 5815232ece5566710d24c81ac3dd629f7556a92818Kenji Kaneshige#define warn(format, arg...) \ 5915232ece5566710d24c81ac3dd629f7556a92818Kenji Kaneshige printk(KERN_WARNING "%s: " format, MY_NAME , ## arg) 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 617f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi#define ctrl_dbg(ctrl, format, arg...) \ 627f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi do { \ 637f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi if (pciehp_debug) \ 641c35b8e538cb6259accb215099cdb673310cad84Frank Seidel dev_printk(KERN_DEBUG, &ctrl->pcie->device, \ 657f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi format, ## arg); \ 667f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi } while (0) 677f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi#define ctrl_err(ctrl, format, arg...) \ 687f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi dev_err(&ctrl->pcie->device, format, ## arg) 697f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi#define ctrl_info(ctrl, format, arg...) \ 707f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi dev_info(&ctrl->pcie->device, format, ## arg) 717f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi#define ctrl_warn(ctrl, format, arg...) \ 727f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi dev_warn(&ctrl->pcie->device, format, ## arg) 737f2feec140f1f1e4f701e013a2bf8284a9ec2a3cTaku Izumi 74a0b1725720d9a023a1dee129234f5972056038c6Kenji Kaneshige#define SLOT_NAME_SIZE 10 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct slot { 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 state; 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct controller *ctrl; 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct hotplug_slot *hotplug_slot; 795d386e1ac4025b4bcc6bad6811e771cb76064dfeKenji Kaneshige struct delayed_work work; /* work for button event */ 805d386e1ac4025b4bcc6bad6811e771cb76064dfeKenji Kaneshige struct mutex lock; 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct event_info { 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 event_type; 855d386e1ac4025b4bcc6bad6811e771cb76064dfeKenji Kaneshige struct slot *p_slot; 865d386e1ac4025b4bcc6bad6811e771cb76064dfeKenji Kaneshige struct work_struct work; 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct controller { 90dd5619cb4407e830a8921a93c949be37c81105b5Kenji Kaneshige struct mutex ctrl_lock; /* controller lock */ 91f7a10e32a1a7ae240fa3925c5727d224eba3e31dKenji Kaneshige struct pcie_device *pcie; /* PCI Express port service */ 928720d27dabf580278a7719fa8b5783d9878e2d42Kenji Kaneshige struct slot *slot; 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t queue; /* sleep & wake process */ 94ae416e6b2936fdb70aeee6eb9066115d4521daa6Kenji Kaneshige u32 slot_cap; 9548fe39151727db350347e1dba09d71c8ca24207aKenji Kaneshige struct timer_list poll_timer; 966a82e21823058eea95325005b79f3b8c9492460fKenji Kaneshige unsigned int cmd_busy:1; 975808639bfa98d69f77a481d759570d85f164fea0Kenji Kaneshige unsigned int no_cmd_complete:1; 98f18e9625e02bb3e5ba9e81104f14e9d904ab28c4Kenji Kaneshige unsigned int link_active_reporting:1; 99dbc7e1e567ef8cfc4b792ef6acb51d4ceb15746aEric W. Biederman unsigned int notification_enabled:1; 10099f0169c17f334a11b0ace91188501c612f3e1e6Kenji Kaneshige unsigned int power_fault_detected; 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_BUTTON_IGNORE 0 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_PRESENCE_ON 1 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_PRESENCE_OFF 2 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_SWITCH_CLOSE 3 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_SWITCH_OPEN 4 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_POWER_FAULT 5 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_POWER_FAULT_CLEAR 6 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_BUTTON_PRESS 7 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_BUTTON_RELEASE 8 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define INT_BUTTON_CANCEL 9 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define STATIC_STATE 0 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BLINKINGON_STATE 1 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BLINKINGOFF_STATE 2 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define POWERON_STATE 3 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define POWEROFF_STATE 4 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 120656927b119a6f2fe0ed453191e13eec6fe041f4cKenji Kaneshige#define ATTN_BUTTN(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_ABP) 121656927b119a6f2fe0ed453191e13eec6fe041f4cKenji Kaneshige#define POWER_CTRL(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_PCP) 122656927b119a6f2fe0ed453191e13eec6fe041f4cKenji Kaneshige#define MRL_SENS(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_MRLSP) 123656927b119a6f2fe0ed453191e13eec6fe041f4cKenji Kaneshige#define ATTN_LED(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_AIP) 124656927b119a6f2fe0ed453191e13eec6fe041f4cKenji Kaneshige#define PWR_LED(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_PIP) 125656927b119a6f2fe0ed453191e13eec6fe041f4cKenji Kaneshige#define HP_SUPR_RM(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_HPS) 126656927b119a6f2fe0ed453191e13eec6fe041f4cKenji Kaneshige#define EMI(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_EIP) 127656927b119a6f2fe0ed453191e13eec6fe041f4cKenji Kaneshige#define NO_CMD_CMPL(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_NCCS) 128d54798f034b247b9d95a31cd755a4236655ca502Kenji Kaneshige#define PSN(ctrl) ((ctrl)->slot_cap >> 19) 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1305d386e1ac4025b4bcc6bad6811e771cb76064dfeKenji Kaneshigeextern int pciehp_sysfs_enable_slot(struct slot *slot); 1315d386e1ac4025b4bcc6bad6811e771cb76064dfeKenji Kaneshigeextern int pciehp_sysfs_disable_slot(struct slot *slot); 132dbd79aed1aea2bece0bf43cc2ff3b2f9baf48a08Kenji Kaneshigeextern u8 pciehp_handle_attention_button(struct slot *p_slot); 13382a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeextern u8 pciehp_handle_switch_change(struct slot *p_slot); 134dbd79aed1aea2bece0bf43cc2ff3b2f9baf48a08Kenji Kaneshigeextern u8 pciehp_handle_presence_change(struct slot *p_slot); 135dbd79aed1aea2bece0bf43cc2ff3b2f9baf48a08Kenji Kaneshigeextern u8 pciehp_handle_power_fault(struct slot *p_slot); 13615232ece5566710d24c81ac3dd629f7556a92818Kenji Kaneshigeextern int pciehp_configure_device(struct slot *p_slot); 13715232ece5566710d24c81ac3dd629f7556a92818Kenji Kaneshigeextern int pciehp_unconfigure_device(struct slot *p_slot); 138e325e1f0783382298141c74737712637943c6063Kristen Carlson Accardiextern void pciehp_queue_pushbutton_work(struct work_struct *work); 139c4635eb06af700820d658a163f06aff12e17cfb2Kenji Kaneshigestruct controller *pcie_init(struct pcie_device *dev); 140dbc7e1e567ef8cfc4b792ef6acb51d4ceb15746aEric W. Biedermanint pcie_init_notification(struct controller *ctrl); 1410a3c33d77ff7ad5b988997536a8f09c49e35ad20Mark Lordint pciehp_enable_slot(struct slot *p_slot); 142cd2fe83a81510acfd1ae29b8ffe04f7ef675c993Mark Lordint pciehp_disable_slot(struct slot *p_slot); 143c4635eb06af700820d658a163f06aff12e17cfb2Kenji Kaneshigeint pcie_enable_notification(struct controller *ctrl); 14482a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_power_on_slot(struct slot *slot); 14582a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_power_off_slot(struct slot *slot); 14682a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_get_power_status(struct slot *slot, u8 *status); 14782a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_get_attention_status(struct slot *slot, u8 *status); 14882a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshige 14982a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_set_attention_status(struct slot *slot, u8 status); 15082a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_get_latch_status(struct slot *slot, u8 *status); 15182a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_get_adapter_status(struct slot *slot, u8 *status); 15282a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_get_max_link_speed(struct slot *slot, enum pci_bus_speed *speed); 15382a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_get_max_link_width(struct slot *slot, enum pcie_link_width *val); 15482a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_get_cur_link_speed(struct slot *slot, enum pci_bus_speed *speed); 15582a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_get_cur_link_width(struct slot *slot, enum pcie_link_width *val); 15682a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_query_power_fault(struct slot *slot); 15782a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigevoid pciehp_green_led_on(struct slot *slot); 15882a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigevoid pciehp_green_led_off(struct slot *slot); 15982a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigevoid pciehp_green_led_blink(struct slot *slot); 16082a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigeint pciehp_check_link_status(struct controller *ctrl); 16182a9e79ef132cbf77de58aae35c1a14237f2fcdeKenji Kaneshigevoid pciehp_release_ctrl(struct controller *ctrl); 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 163e1acb24f059defdaa0264e925f19cc21b0a3e592Alex Chiangstatic inline const char *slot_name(struct slot *slot) 164e1acb24f059defdaa0264e925f19cc21b0a3e592Alex Chiang{ 165e1acb24f059defdaa0264e925f19cc21b0a3e592Alex Chiang return hotplug_slot_name(slot->hotplug_slot); 166e1acb24f059defdaa0264e925f19cc21b0a3e592Alex Chiang} 167e1acb24f059defdaa0264e925f19cc21b0a3e592Alex Chiang 168783c49fc506d9afe4784390b556fa25ede5d6d1fKristen Accardi#ifdef CONFIG_ACPI 169e50d1088bf2e5a68068c5f602be1dcc3e52dc873Kristen Carlson Accardi#include <acpi/acpi.h> 170e50d1088bf2e5a68068c5f602be1dcc3e52dc873Kristen Carlson Accardi#include <acpi/acpi_bus.h> 171e50d1088bf2e5a68068c5f602be1dcc3e52dc873Kristen Carlson Accardi#include <linux/pci-acpi.h> 172e50d1088bf2e5a68068c5f602be1dcc3e52dc873Kristen Carlson Accardi 173c9ffa5a586a97da4d552f89b8f39eea79a63a612Kenji Kaneshigeextern void __init pciehp_acpi_slot_detection_init(void); 174c9ffa5a586a97da4d552f89b8f39eea79a63a612Kenji Kaneshigeextern int pciehp_acpi_slot_detection_check(struct pci_dev *dev); 175c9ffa5a586a97da4d552f89b8f39eea79a63a612Kenji Kaneshige 176c9ffa5a586a97da4d552f89b8f39eea79a63a612Kenji Kaneshigestatic inline void pciehp_firmware_init(void) 177c9ffa5a586a97da4d552f89b8f39eea79a63a612Kenji Kaneshige{ 178c9ffa5a586a97da4d552f89b8f39eea79a63a612Kenji Kaneshige pciehp_acpi_slot_detection_init(); 179c9ffa5a586a97da4d552f89b8f39eea79a63a612Kenji Kaneshige} 180783c49fc506d9afe4784390b556fa25ede5d6d1fKristen Accardi#else 181c9ffa5a586a97da4d552f89b8f39eea79a63a612Kenji Kaneshige#define pciehp_firmware_init() do {} while (0) 1826e63e80d88521a176989ed14b420f42dc418e46aRafael J. Wysockistatic inline int pciehp_acpi_slot_detection_check(struct pci_dev *dev) 1836e63e80d88521a176989ed14b420f42dc418e46aRafael J. Wysocki{ 1846e63e80d88521a176989ed14b420f42dc418e46aRafael J. Wysocki return 0; 1856e63e80d88521a176989ed14b420f42dc418e46aRafael J. Wysocki} 186783c49fc506d9afe4784390b556fa25ede5d6d1fKristen Accardi#endif /* CONFIG_ACPI */ 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* _PCIEHP_H */ 188