Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * PCI Express Hot Plug Controller Driver |
| 3 | * |
| 4 | * Copyright (C) 1995,2001 Compaq Computer Corporation |
| 5 | * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) |
| 6 | * Copyright (C) 2001 IBM Corp. |
| 7 | * Copyright (C) 2003-2004 Intel Corporation |
| 8 | * |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or (at |
| 14 | * your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, but |
| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 19 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 20 | * details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | * |
Kristen Accardi | 8cf4c19 | 2005-08-16 15:16:10 -0700 | [diff] [blame] | 26 | * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | * |
| 28 | */ |
| 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/module.h> |
| 31 | #include <linux/kernel.h> |
| 32 | #include <linux/types.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 33 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/pci.h> |
| 35 | #include "../pci.h" |
| 36 | #include "pciehp.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 38 | static void interrupt_event_handler(struct work_struct *work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 40 | static int queue_interrupt_event(struct slot *p_slot, u32 event_type) |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 41 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 42 | struct event_info *info; |
| 43 | |
| 44 | info = kmalloc(sizeof(*info), GFP_ATOMIC); |
| 45 | if (!info) |
| 46 | return -ENOMEM; |
| 47 | |
| 48 | info->event_type = event_type; |
| 49 | info->p_slot = p_slot; |
| 50 | INIT_WORK(&info->work, interrupt_event_handler); |
| 51 | |
Yijing Wang | c2be6f9 | 2013-01-11 10:15:54 +0800 | [diff] [blame] | 52 | queue_work(p_slot->wq, &info->work); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 53 | |
| 54 | return 0; |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 55 | } |
| 56 | |
Kenji Kaneshige | dbd79ae | 2008-05-27 19:03:16 +0900 | [diff] [blame] | 57 | u8 pciehp_handle_attention_button(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 59 | u32 event_type; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 60 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
| 62 | /* Attention Button Change */ |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 63 | ctrl_dbg(ctrl, "Attention button interrupt received\n"); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 64 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | /* |
| 66 | * Button pressed - See if need to TAKE ACTION!!! |
| 67 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 68 | ctrl_info(ctrl, "Button pressed on Slot(%s)\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 69 | event_type = INT_BUTTON_PRESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 71 | queue_interrupt_event(p_slot, event_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | } |
| 75 | |
Kenji Kaneshige | dbd79ae | 2008-05-27 19:03:16 +0900 | [diff] [blame] | 76 | u8 pciehp_handle_switch_change(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | u8 getstatus; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 79 | u32 event_type; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 80 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | /* Switch Change */ |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 83 | ctrl_dbg(ctrl, "Switch interrupt received\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 85 | pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | if (getstatus) { |
| 87 | /* |
| 88 | * Switch opened |
| 89 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 90 | ctrl_info(ctrl, "Latch open on Slot(%s)\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 91 | event_type = INT_SWITCH_OPEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | } else { |
| 93 | /* |
| 94 | * Switch closed |
| 95 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 96 | ctrl_info(ctrl, "Latch close on Slot(%s)\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 97 | event_type = INT_SWITCH_CLOSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | } |
| 99 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 100 | queue_interrupt_event(p_slot, event_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 102 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | } |
| 104 | |
Kenji Kaneshige | dbd79ae | 2008-05-27 19:03:16 +0900 | [diff] [blame] | 105 | u8 pciehp_handle_presence_change(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 107 | u32 event_type; |
| 108 | u8 presence_save; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 109 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
| 111 | /* Presence Change */ |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 112 | ctrl_dbg(ctrl, "Presence/Notify input change\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | /* Switch is open, assume a presence change |
| 115 | * Save the presence state |
| 116 | */ |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 117 | pciehp_get_adapter_status(p_slot, &presence_save); |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 118 | if (presence_save) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | /* |
| 120 | * Card Present |
| 121 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 122 | ctrl_info(ctrl, "Card present on Slot(%s)\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 123 | event_type = INT_PRESENCE_ON; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | } else { |
| 125 | /* |
| 126 | * Not Present |
| 127 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 128 | ctrl_info(ctrl, "Card not present on Slot(%s)\n", |
| 129 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 130 | event_type = INT_PRESENCE_OFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | } |
| 132 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 133 | queue_interrupt_event(p_slot, event_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 135 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | } |
| 137 | |
Kenji Kaneshige | dbd79ae | 2008-05-27 19:03:16 +0900 | [diff] [blame] | 138 | u8 pciehp_handle_power_fault(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 140 | u32 event_type; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 141 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
| 143 | /* power fault */ |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 144 | ctrl_dbg(ctrl, "Power fault interrupt received\n"); |
Kenji Kaneshige | 5651c48 | 2009-11-13 15:14:10 +0900 | [diff] [blame] | 145 | ctrl_err(ctrl, "Power fault on slot %s\n", slot_name(p_slot)); |
| 146 | event_type = INT_POWER_FAULT; |
| 147 | ctrl_info(ctrl, "Power fault bit %x set\n", 0); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 148 | queue_interrupt_event(p_slot, event_type); |
| 149 | |
| 150 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | } |
| 152 | |
Rajat Jain | e48f1b6 | 2014-02-04 18:29:10 -0800 | [diff] [blame] | 153 | void pciehp_handle_linkstate_change(struct slot *p_slot) |
| 154 | { |
| 155 | u32 event_type; |
| 156 | struct controller *ctrl = p_slot->ctrl; |
| 157 | |
| 158 | /* Link Status Change */ |
| 159 | ctrl_dbg(ctrl, "Data Link Layer State change\n"); |
| 160 | |
| 161 | if (pciehp_check_link_active(ctrl)) { |
| 162 | ctrl_info(ctrl, "slot(%s): Link Up event\n", |
| 163 | slot_name(p_slot)); |
| 164 | event_type = INT_LINK_UP; |
| 165 | } else { |
| 166 | ctrl_info(ctrl, "slot(%s): Link Down event\n", |
| 167 | slot_name(p_slot)); |
| 168 | event_type = INT_LINK_DOWN; |
| 169 | } |
| 170 | |
| 171 | queue_interrupt_event(p_slot, event_type); |
| 172 | } |
| 173 | |
Kenji Kaneshige | 36ed27b | 2007-08-09 16:09:36 -0700 | [diff] [blame] | 174 | /* The following routines constitute the bulk of the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | hotplug controller logic |
| 176 | */ |
| 177 | |
Ryan Desfosses | 3c78bc6 | 2014-04-18 20:13:49 -0400 | [diff] [blame] | 178 | static void set_slot_off(struct controller *ctrl, struct slot *pslot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | /* turn off slot, turn on Amber LED, turn off Green LED if supported*/ |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 181 | if (POWER_CTRL(ctrl)) { |
Bjorn Helgaas | 6dae620 | 2013-12-14 13:06:16 -0700 | [diff] [blame] | 182 | pciehp_power_off_slot(pslot); |
| 183 | |
Kenji Kaneshige | c7b4fee | 2008-10-24 14:26:35 +0900 | [diff] [blame] | 184 | /* |
| 185 | * After turning power off, we must wait for at least 1 second |
| 186 | * before taking any action that relies on power having been |
| 187 | * removed from the slot/adapter. |
| 188 | */ |
| 189 | msleep(1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | } |
| 191 | |
Bjorn Helgaas | af9ab79 | 2013-12-15 17:23:54 -0700 | [diff] [blame] | 192 | pciehp_green_led_off(pslot); |
| 193 | pciehp_set_attention_status(pslot, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | /** |
| 197 | * board_added - Called after a board has been added to the system. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 198 | * @p_slot: &slot where board is added |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 200 | * Turns power on for the board. |
| 201 | * Configures board. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 203 | static int board_added(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | { |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 205 | int retval = 0; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 206 | struct controller *ctrl = p_slot->ctrl; |
Kenji Kaneshige | 385e249 | 2009-09-15 17:30:14 +0900 | [diff] [blame] | 207 | struct pci_bus *parent = ctrl->pcie->port->subordinate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 209 | if (POWER_CTRL(ctrl)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | /* Power on slot */ |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 211 | retval = pciehp_power_on_slot(p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 212 | if (retval) |
| 213 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | } |
Kenji Kaneshige | 36ed27b | 2007-08-09 16:09:36 -0700 | [diff] [blame] | 215 | |
Bjorn Helgaas | af9ab79 | 2013-12-15 17:23:54 -0700 | [diff] [blame] | 216 | pciehp_green_led_blink(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 218 | /* Check link training status */ |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 219 | retval = pciehp_check_link_status(ctrl); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 220 | if (retval) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 221 | ctrl_err(ctrl, "Failed to check link status\n"); |
Kenji Kaneshige | 5651c48 | 2009-11-13 15:14:10 +0900 | [diff] [blame] | 222 | goto err_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | } |
| 224 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | /* Check for a power fault */ |
Kenji Kaneshige | 5651c48 | 2009-11-13 15:14:10 +0900 | [diff] [blame] | 226 | if (ctrl->power_fault_detected || pciehp_query_power_fault(p_slot)) { |
| 227 | ctrl_err(ctrl, "Power fault on slot %s\n", slot_name(p_slot)); |
Kenji Kaneshige | d9fb42a8 | 2009-09-15 17:33:30 +0900 | [diff] [blame] | 228 | retval = -EIO; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 229 | goto err_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | } |
| 231 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 232 | retval = pciehp_configure_device(p_slot); |
| 233 | if (retval) { |
Kenji Kaneshige | d689f7e | 2009-09-15 17:26:56 +0900 | [diff] [blame] | 234 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:00\n", |
| 235 | pci_domain_nr(parent), parent->number); |
Yijing Wang | 50277c8 | 2014-02-11 17:36:51 -0700 | [diff] [blame] | 236 | if (retval != -EEXIST) |
| 237 | goto err_exit; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 238 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
Bjorn Helgaas | af9ab79 | 2013-12-15 17:23:54 -0700 | [diff] [blame] | 240 | pciehp_green_led_on(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | return 0; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 242 | |
| 243 | err_exit: |
| 244 | set_slot_off(ctrl, p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 245 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | } |
| 247 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 249 | * remove_board - Turns off slot and LEDs |
| 250 | * @p_slot: slot where board is being removed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 252 | static int remove_board(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | { |
Bjorn Helgaas | 6dae620 | 2013-12-14 13:06:16 -0700 | [diff] [blame] | 254 | int retval; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 255 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 257 | retval = pciehp_unconfigure_device(p_slot); |
| 258 | if (retval) |
| 259 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 261 | if (POWER_CTRL(ctrl)) { |
Bjorn Helgaas | 6dae620 | 2013-12-14 13:06:16 -0700 | [diff] [blame] | 262 | pciehp_power_off_slot(p_slot); |
| 263 | |
Kenji Kaneshige | c7b4fee | 2008-10-24 14:26:35 +0900 | [diff] [blame] | 264 | /* |
| 265 | * After turning power off, we must wait for at least 1 second |
| 266 | * before taking any action that relies on power having been |
| 267 | * removed from the slot/adapter. |
| 268 | */ |
| 269 | msleep(1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | } |
| 271 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 272 | /* turn off Green LED */ |
Bjorn Helgaas | af9ab79 | 2013-12-15 17:23:54 -0700 | [diff] [blame] | 273 | pciehp_green_led_off(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | return 0; |
| 275 | } |
| 276 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 277 | struct power_work_info { |
| 278 | struct slot *p_slot; |
| 279 | struct work_struct work; |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 280 | unsigned int req; |
| 281 | #define DISABLE_REQ 0 |
| 282 | #define ENABLE_REQ 1 |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 283 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
| 285 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 286 | * pciehp_power_thread - handle pushbutton events |
| 287 | * @work: &struct work_struct describing work to be done |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 289 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | * Handles all pending events and exits. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 292 | static void pciehp_power_thread(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 294 | struct power_work_info *info = |
| 295 | container_of(work, struct power_work_info, work); |
| 296 | struct slot *p_slot = info->p_slot; |
Rajat Jain | 50b52fd | 2014-02-04 18:31:11 -0800 | [diff] [blame] | 297 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 299 | switch (info->req) { |
| 300 | case DISABLE_REQ: |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 301 | ctrl_dbg(p_slot->ctrl, |
Kenji Kaneshige | d689f7e | 2009-09-15 17:26:56 +0900 | [diff] [blame] | 302 | "Disabling domain:bus:device=%04x:%02x:00\n", |
Kenji Kaneshige | 385e249 | 2009-09-15 17:30:14 +0900 | [diff] [blame] | 303 | pci_domain_nr(p_slot->ctrl->pcie->port->subordinate), |
| 304 | p_slot->ctrl->pcie->port->subordinate->number); |
Rajat Jain | 50b52fd | 2014-02-04 18:31:11 -0800 | [diff] [blame] | 305 | mutex_lock(&p_slot->hotplug_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | pciehp_disable_slot(p_slot); |
Rajat Jain | 50b52fd | 2014-02-04 18:31:11 -0800 | [diff] [blame] | 307 | mutex_unlock(&p_slot->hotplug_lock); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 308 | mutex_lock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | p_slot->state = STATIC_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 310 | mutex_unlock(&p_slot->lock); |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 311 | break; |
| 312 | case ENABLE_REQ: |
| 313 | ctrl_dbg(p_slot->ctrl, |
| 314 | "Enabling domain:bus:device=%04x:%02x:00\n", |
| 315 | pci_domain_nr(p_slot->ctrl->pcie->port->subordinate), |
| 316 | p_slot->ctrl->pcie->port->subordinate->number); |
Rajat Jain | 50b52fd | 2014-02-04 18:31:11 -0800 | [diff] [blame] | 317 | mutex_lock(&p_slot->hotplug_lock); |
| 318 | ret = pciehp_enable_slot(p_slot); |
| 319 | mutex_unlock(&p_slot->hotplug_lock); |
| 320 | if (ret) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 321 | pciehp_green_led_off(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 322 | mutex_lock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | p_slot->state = STATIC_STATE; |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 324 | mutex_unlock(&p_slot->lock); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 325 | break; |
| 326 | default: |
| 327 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | } |
| 329 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 330 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | } |
| 332 | |
Kristen Carlson Accardi | e325e1f | 2007-03-21 11:45:31 -0700 | [diff] [blame] | 333 | void pciehp_queue_pushbutton_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 335 | struct slot *p_slot = container_of(work, struct slot, work.work); |
| 336 | struct power_work_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 338 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 339 | if (!info) { |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 340 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
| 341 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | return; |
| 343 | } |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 344 | info->p_slot = p_slot; |
| 345 | INIT_WORK(&info->work, pciehp_power_thread); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 347 | mutex_lock(&p_slot->lock); |
| 348 | switch (p_slot->state) { |
| 349 | case BLINKINGOFF_STATE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | p_slot->state = POWEROFF_STATE; |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 351 | info->req = DISABLE_REQ; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 352 | break; |
| 353 | case BLINKINGON_STATE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | p_slot->state = POWERON_STATE; |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 355 | info->req = ENABLE_REQ; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 356 | break; |
| 357 | default: |
Jiri Slaby | 6fcaf17 | 2010-01-06 17:47:56 +0100 | [diff] [blame] | 358 | kfree(info); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 359 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | } |
Yijing Wang | c2be6f9 | 2013-01-11 10:15:54 +0800 | [diff] [blame] | 361 | queue_work(p_slot->wq, &info->work); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 362 | out: |
| 363 | mutex_unlock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | } |
| 365 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 366 | /* |
| 367 | * Note: This function must be called with slot->lock held |
| 368 | */ |
| 369 | static void handle_button_press_event(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 371 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | u8 getstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 374 | switch (p_slot->state) { |
| 375 | case STATIC_STATE: |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 376 | pciehp_get_power_status(p_slot, &getstatus); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 377 | if (getstatus) { |
| 378 | p_slot->state = BLINKINGOFF_STATE; |
Ryan Desfosses | 227f064 | 2014-04-18 20:13:50 -0400 | [diff] [blame] | 379 | ctrl_info(ctrl, "PCI slot #%s - powering off due to button press\n", |
| 380 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 381 | } else { |
| 382 | p_slot->state = BLINKINGON_STATE; |
Ryan Desfosses | 227f064 | 2014-04-18 20:13:50 -0400 | [diff] [blame] | 383 | ctrl_info(ctrl, "PCI slot #%s - powering on due to button press\n", |
| 384 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 385 | } |
| 386 | /* blink green LED and turn off amber */ |
Bjorn Helgaas | af9ab79 | 2013-12-15 17:23:54 -0700 | [diff] [blame] | 387 | pciehp_green_led_blink(p_slot); |
| 388 | pciehp_set_attention_status(p_slot, 0); |
Yijing Wang | c2be6f9 | 2013-01-11 10:15:54 +0800 | [diff] [blame] | 389 | queue_delayed_work(p_slot->wq, &p_slot->work, 5*HZ); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 390 | break; |
| 391 | case BLINKINGOFF_STATE: |
| 392 | case BLINKINGON_STATE: |
| 393 | /* |
| 394 | * Cancel if we are still blinking; this means that we |
| 395 | * press the attention again before the 5 sec. limit |
| 396 | * expires to cancel hot-add or hot-remove |
| 397 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 398 | ctrl_info(ctrl, "Button cancel on Slot(%s)\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 399 | cancel_delayed_work(&p_slot->work); |
Bjorn Helgaas | 9cad7f5 | 2014-02-11 15:26:29 -0700 | [diff] [blame] | 400 | if (p_slot->state == BLINKINGOFF_STATE) |
Bjorn Helgaas | af9ab79 | 2013-12-15 17:23:54 -0700 | [diff] [blame] | 401 | pciehp_green_led_on(p_slot); |
Bjorn Helgaas | 9cad7f5 | 2014-02-11 15:26:29 -0700 | [diff] [blame] | 402 | else |
Bjorn Helgaas | af9ab79 | 2013-12-15 17:23:54 -0700 | [diff] [blame] | 403 | pciehp_green_led_off(p_slot); |
Bjorn Helgaas | af9ab79 | 2013-12-15 17:23:54 -0700 | [diff] [blame] | 404 | pciehp_set_attention_status(p_slot, 0); |
Ryan Desfosses | 227f064 | 2014-04-18 20:13:50 -0400 | [diff] [blame] | 405 | ctrl_info(ctrl, "PCI slot #%s - action canceled due to button press\n", |
| 406 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 407 | p_slot->state = STATIC_STATE; |
| 408 | break; |
| 409 | case POWEROFF_STATE: |
| 410 | case POWERON_STATE: |
| 411 | /* |
| 412 | * Ignore if the slot is on power-on or power-off state; |
| 413 | * this means that the previous attention button action |
| 414 | * to hot-add or hot-remove is undergoing |
| 415 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 416 | ctrl_info(ctrl, "Button ignore on Slot(%s)\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 417 | break; |
| 418 | default: |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 419 | ctrl_warn(ctrl, "Not a valid state\n"); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 420 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | } |
| 422 | } |
| 423 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 424 | /* |
| 425 | * Note: This function must be called with slot->lock held |
| 426 | */ |
| 427 | static void handle_surprise_event(struct slot *p_slot) |
| 428 | { |
| 429 | u8 getstatus; |
| 430 | struct power_work_info *info; |
| 431 | |
| 432 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 433 | if (!info) { |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 434 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
| 435 | __func__); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 436 | return; |
| 437 | } |
| 438 | info->p_slot = p_slot; |
| 439 | INIT_WORK(&info->work, pciehp_power_thread); |
| 440 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 441 | pciehp_get_adapter_status(p_slot, &getstatus); |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 442 | if (!getstatus) { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 443 | p_slot->state = POWEROFF_STATE; |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 444 | info->req = DISABLE_REQ; |
| 445 | } else { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 446 | p_slot->state = POWERON_STATE; |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 447 | info->req = ENABLE_REQ; |
| 448 | } |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 449 | |
Yijing Wang | c2be6f9 | 2013-01-11 10:15:54 +0800 | [diff] [blame] | 450 | queue_work(p_slot->wq, &info->work); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 451 | } |
| 452 | |
Rajat Jain | e48f1b6 | 2014-02-04 18:29:10 -0800 | [diff] [blame] | 453 | /* |
| 454 | * Note: This function must be called with slot->lock held |
| 455 | */ |
| 456 | static void handle_link_event(struct slot *p_slot, u32 event) |
| 457 | { |
| 458 | struct controller *ctrl = p_slot->ctrl; |
| 459 | struct power_work_info *info; |
| 460 | |
| 461 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 462 | if (!info) { |
| 463 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
| 464 | __func__); |
| 465 | return; |
| 466 | } |
| 467 | info->p_slot = p_slot; |
Rajat Jain | c4f2f5e | 2014-02-04 18:30:56 -0800 | [diff] [blame] | 468 | info->req = event == INT_LINK_UP ? ENABLE_REQ : DISABLE_REQ; |
Rajat Jain | e48f1b6 | 2014-02-04 18:29:10 -0800 | [diff] [blame] | 469 | INIT_WORK(&info->work, pciehp_power_thread); |
| 470 | |
| 471 | switch (p_slot->state) { |
| 472 | case BLINKINGON_STATE: |
| 473 | case BLINKINGOFF_STATE: |
| 474 | cancel_delayed_work(&p_slot->work); |
| 475 | /* Fall through */ |
| 476 | case STATIC_STATE: |
| 477 | p_slot->state = event == INT_LINK_UP ? |
| 478 | POWERON_STATE : POWEROFF_STATE; |
| 479 | queue_work(p_slot->wq, &info->work); |
| 480 | break; |
| 481 | case POWERON_STATE: |
| 482 | if (event == INT_LINK_UP) { |
| 483 | ctrl_info(ctrl, |
| 484 | "Link Up event ignored on slot(%s): already powering on\n", |
| 485 | slot_name(p_slot)); |
| 486 | kfree(info); |
| 487 | } else { |
| 488 | ctrl_info(ctrl, |
| 489 | "Link Down event queued on slot(%s): currently getting powered on\n", |
| 490 | slot_name(p_slot)); |
| 491 | p_slot->state = POWEROFF_STATE; |
| 492 | queue_work(p_slot->wq, &info->work); |
| 493 | } |
| 494 | break; |
| 495 | case POWEROFF_STATE: |
| 496 | if (event == INT_LINK_UP) { |
| 497 | ctrl_info(ctrl, |
| 498 | "Link Up event queued on slot(%s): currently getting powered off\n", |
| 499 | slot_name(p_slot)); |
| 500 | p_slot->state = POWERON_STATE; |
| 501 | queue_work(p_slot->wq, &info->work); |
| 502 | } else { |
| 503 | ctrl_info(ctrl, |
| 504 | "Link Down event ignored on slot(%s): already powering off\n", |
| 505 | slot_name(p_slot)); |
| 506 | kfree(info); |
| 507 | } |
| 508 | break; |
| 509 | default: |
| 510 | ctrl_err(ctrl, "Not a valid state on slot(%s)\n", |
| 511 | slot_name(p_slot)); |
| 512 | kfree(info); |
| 513 | break; |
| 514 | } |
| 515 | } |
| 516 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 517 | static void interrupt_event_handler(struct work_struct *work) |
| 518 | { |
| 519 | struct event_info *info = container_of(work, struct event_info, work); |
| 520 | struct slot *p_slot = info->p_slot; |
| 521 | struct controller *ctrl = p_slot->ctrl; |
| 522 | |
| 523 | mutex_lock(&p_slot->lock); |
| 524 | switch (info->event_type) { |
| 525 | case INT_BUTTON_PRESS: |
| 526 | handle_button_press_event(p_slot); |
| 527 | break; |
| 528 | case INT_POWER_FAULT: |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 529 | if (!POWER_CTRL(ctrl)) |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 530 | break; |
Bjorn Helgaas | af9ab79 | 2013-12-15 17:23:54 -0700 | [diff] [blame] | 531 | pciehp_set_attention_status(p_slot, 1); |
| 532 | pciehp_green_led_off(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 533 | break; |
| 534 | case INT_PRESENCE_ON: |
Rajat Jain | 2b3940b | 2014-02-18 18:53:19 -0800 | [diff] [blame] | 535 | ctrl_dbg(ctrl, "Surprise Insertion\n"); |
| 536 | handle_surprise_event(p_slot); |
| 537 | break; |
| 538 | case INT_PRESENCE_OFF: |
| 539 | /* |
| 540 | * Regardless of surprise capability, we need to |
| 541 | * definitely remove a card that has been pulled out! |
| 542 | */ |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 543 | ctrl_dbg(ctrl, "Surprise Removal\n"); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 544 | handle_surprise_event(p_slot); |
| 545 | break; |
Rajat Jain | e48f1b6 | 2014-02-04 18:29:10 -0800 | [diff] [blame] | 546 | case INT_LINK_UP: |
| 547 | case INT_LINK_DOWN: |
| 548 | handle_link_event(p_slot, info->event_type); |
| 549 | break; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 550 | default: |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 551 | break; |
| 552 | } |
| 553 | mutex_unlock(&p_slot->lock); |
| 554 | |
| 555 | kfree(info); |
| 556 | } |
| 557 | |
Rajat Jain | 50b52fd | 2014-02-04 18:31:11 -0800 | [diff] [blame] | 558 | /* |
| 559 | * Note: This function must be called with slot->hotplug_lock held |
| 560 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | int pciehp_enable_slot(struct slot *p_slot) |
| 562 | { |
| 563 | u8 getstatus = 0; |
| 564 | int rc; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 565 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
Bjorn Helgaas | 6dae620 | 2013-12-14 13:06:16 -0700 | [diff] [blame] | 567 | pciehp_get_adapter_status(p_slot, &getstatus); |
| 568 | if (!getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 569 | ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 570 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | } |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 572 | if (MRL_SENS(p_slot->ctrl)) { |
Bjorn Helgaas | 6dae620 | 2013-12-14 13:06:16 -0700 | [diff] [blame] | 573 | pciehp_get_latch_status(p_slot, &getstatus); |
| 574 | if (getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 575 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
| 576 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 577 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | } |
| 579 | } |
Kenji Kaneshige | 36ed27b | 2007-08-09 16:09:36 -0700 | [diff] [blame] | 580 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 581 | if (POWER_CTRL(p_slot->ctrl)) { |
Bjorn Helgaas | 6dae620 | 2013-12-14 13:06:16 -0700 | [diff] [blame] | 582 | pciehp_get_power_status(p_slot, &getstatus); |
| 583 | if (getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 584 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
| 585 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 586 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | } |
| 588 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 590 | pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 592 | rc = board_added(p_slot); |
Bjorn Helgaas | 9cad7f5 | 2014-02-11 15:26:29 -0700 | [diff] [blame] | 593 | if (rc) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 594 | pciehp_get_latch_status(p_slot, &getstatus); |
Bjorn Helgaas | 9cad7f5 | 2014-02-11 15:26:29 -0700 | [diff] [blame] | 595 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | return rc; |
| 597 | } |
| 598 | |
Rajat Jain | 50b52fd | 2014-02-04 18:31:11 -0800 | [diff] [blame] | 599 | /* |
| 600 | * Note: This function must be called with slot->hotplug_lock held |
| 601 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | int pciehp_disable_slot(struct slot *p_slot) |
| 603 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | u8 getstatus = 0; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 605 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | |
| 607 | if (!p_slot->ctrl) |
| 608 | return 1; |
| 609 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 610 | if (POWER_CTRL(p_slot->ctrl)) { |
Bjorn Helgaas | 6dae620 | 2013-12-14 13:06:16 -0700 | [diff] [blame] | 611 | pciehp_get_power_status(p_slot, &getstatus); |
| 612 | if (!getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 613 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
| 614 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 615 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | } |
| 617 | } |
| 618 | |
Kenji Kaneshige | 445f798 | 2009-10-05 17:42:59 +0900 | [diff] [blame] | 619 | return remove_board(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | } |
| 621 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 622 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
| 623 | { |
| 624 | int retval = -ENODEV; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 625 | struct controller *ctrl = p_slot->ctrl; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 626 | |
| 627 | mutex_lock(&p_slot->lock); |
| 628 | switch (p_slot->state) { |
| 629 | case BLINKINGON_STATE: |
| 630 | cancel_delayed_work(&p_slot->work); |
| 631 | case STATIC_STATE: |
| 632 | p_slot->state = POWERON_STATE; |
| 633 | mutex_unlock(&p_slot->lock); |
Rajat Jain | 50b52fd | 2014-02-04 18:31:11 -0800 | [diff] [blame] | 634 | mutex_lock(&p_slot->hotplug_lock); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 635 | retval = pciehp_enable_slot(p_slot); |
Rajat Jain | 50b52fd | 2014-02-04 18:31:11 -0800 | [diff] [blame] | 636 | mutex_unlock(&p_slot->hotplug_lock); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 637 | mutex_lock(&p_slot->lock); |
| 638 | p_slot->state = STATIC_STATE; |
| 639 | break; |
| 640 | case POWERON_STATE: |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 641 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 642 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 643 | break; |
| 644 | case BLINKINGOFF_STATE: |
| 645 | case POWEROFF_STATE: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 646 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
| 647 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 648 | break; |
| 649 | default: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 650 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
| 651 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 652 | break; |
| 653 | } |
| 654 | mutex_unlock(&p_slot->lock); |
| 655 | |
| 656 | return retval; |
| 657 | } |
| 658 | |
| 659 | int pciehp_sysfs_disable_slot(struct slot *p_slot) |
| 660 | { |
| 661 | int retval = -ENODEV; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 662 | struct controller *ctrl = p_slot->ctrl; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 663 | |
| 664 | mutex_lock(&p_slot->lock); |
| 665 | switch (p_slot->state) { |
| 666 | case BLINKINGOFF_STATE: |
| 667 | cancel_delayed_work(&p_slot->work); |
| 668 | case STATIC_STATE: |
| 669 | p_slot->state = POWEROFF_STATE; |
| 670 | mutex_unlock(&p_slot->lock); |
| 671 | retval = pciehp_disable_slot(p_slot); |
| 672 | mutex_lock(&p_slot->lock); |
| 673 | p_slot->state = STATIC_STATE; |
| 674 | break; |
| 675 | case POWEROFF_STATE: |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 676 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 677 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 678 | break; |
| 679 | case BLINKINGON_STATE: |
| 680 | case POWERON_STATE: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 681 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
| 682 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 683 | break; |
| 684 | default: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 685 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
| 686 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 687 | break; |
| 688 | } |
| 689 | mutex_unlock(&p_slot->lock); |
| 690 | |
| 691 | return retval; |
| 692 | } |