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 | |
Kenji Kaneshige | 36ed27b | 2007-08-09 16:09:36 -0700 | [diff] [blame] | 153 | /* The following routines constitute the bulk of the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | hotplug controller logic |
| 155 | */ |
| 156 | |
| 157 | static void set_slot_off(struct controller *ctrl, struct slot * pslot) |
| 158 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | /* 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] | 160 | if (POWER_CTRL(ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 161 | if (pciehp_power_off_slot(pslot)) { |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 162 | ctrl_err(ctrl, |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 163 | "Issue of Slot Power Off command failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | return; |
| 165 | } |
Kenji Kaneshige | c7b4fee | 2008-10-24 14:26:35 +0900 | [diff] [blame] | 166 | /* |
| 167 | * After turning power off, we must wait for at least 1 second |
| 168 | * before taking any action that relies on power having been |
| 169 | * removed from the slot/adapter. |
| 170 | */ |
| 171 | msleep(1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | } |
| 173 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 174 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 175 | pciehp_green_led_off(pslot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 177 | if (ATTN_LED(ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 178 | if (pciehp_set_attention_status(pslot, 1)) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 179 | ctrl_err(ctrl, |
| 180 | "Issue of Set Attention Led command failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | return; |
| 182 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | /** |
| 187 | * board_added - Called after a board has been added to the system. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 188 | * @p_slot: &slot where board is added |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 190 | * Turns power on for the board. |
| 191 | * Configures board. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 193 | static int board_added(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | { |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 195 | int retval = 0; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 196 | struct controller *ctrl = p_slot->ctrl; |
Kenji Kaneshige | 385e249 | 2009-09-15 17:30:14 +0900 | [diff] [blame] | 197 | struct pci_bus *parent = ctrl->pcie->port->subordinate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 199 | if (POWER_CTRL(ctrl)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | /* Power on slot */ |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 201 | retval = pciehp_power_on_slot(p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 202 | if (retval) |
| 203 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | } |
Kenji Kaneshige | 36ed27b | 2007-08-09 16:09:36 -0700 | [diff] [blame] | 205 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 206 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 207 | pciehp_green_led_blink(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 209 | /* Check link training status */ |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 210 | retval = pciehp_check_link_status(ctrl); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 211 | if (retval) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 212 | ctrl_err(ctrl, "Failed to check link status\n"); |
Kenji Kaneshige | 5651c48 | 2009-11-13 15:14:10 +0900 | [diff] [blame] | 213 | goto err_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | } |
| 215 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | /* Check for a power fault */ |
Kenji Kaneshige | 5651c48 | 2009-11-13 15:14:10 +0900 | [diff] [blame] | 217 | if (ctrl->power_fault_detected || pciehp_query_power_fault(p_slot)) { |
| 218 | 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] | 219 | retval = -EIO; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 220 | goto err_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 223 | retval = pciehp_configure_device(p_slot); |
| 224 | if (retval) { |
Kenji Kaneshige | d689f7e | 2009-09-15 17:26:56 +0900 | [diff] [blame] | 225 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:00\n", |
| 226 | pci_domain_nr(parent), parent->number); |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 227 | goto err_exit; |
| 228 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 230 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 231 | pciehp_green_led_on(p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 232 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | return 0; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 234 | |
| 235 | err_exit: |
| 236 | set_slot_off(ctrl, p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 237 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | } |
| 239 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 241 | * remove_board - Turns off slot and LEDs |
| 242 | * @p_slot: slot where board is being removed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 244 | static int remove_board(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | { |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 246 | int retval = 0; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 247 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 249 | retval = pciehp_unconfigure_device(p_slot); |
| 250 | if (retval) |
| 251 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 253 | if (POWER_CTRL(ctrl)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | /* power off slot */ |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 255 | retval = pciehp_power_off_slot(p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 256 | if (retval) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 257 | ctrl_err(ctrl, |
| 258 | "Issue of Slot Disable command failed\n"); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 259 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | } |
Kenji Kaneshige | c7b4fee | 2008-10-24 14:26:35 +0900 | [diff] [blame] | 261 | /* |
| 262 | * After turning power off, we must wait for at least 1 second |
| 263 | * before taking any action that relies on power having been |
| 264 | * removed from the slot/adapter. |
| 265 | */ |
| 266 | msleep(1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | } |
| 268 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 269 | /* turn off Green LED */ |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 270 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 271 | pciehp_green_led_off(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | return 0; |
| 274 | } |
| 275 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 276 | struct power_work_info { |
| 277 | struct slot *p_slot; |
| 278 | struct work_struct work; |
| 279 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
| 281 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 282 | * pciehp_power_thread - handle pushbutton events |
| 283 | * @work: &struct work_struct describing work to be done |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 285 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | * Handles all pending events and exits. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 288 | static void pciehp_power_thread(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 290 | struct power_work_info *info = |
| 291 | container_of(work, struct power_work_info, work); |
| 292 | struct slot *p_slot = info->p_slot; |
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 | mutex_lock(&p_slot->lock); |
| 295 | switch (p_slot->state) { |
| 296 | case POWEROFF_STATE: |
| 297 | mutex_unlock(&p_slot->lock); |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 298 | ctrl_dbg(p_slot->ctrl, |
Kenji Kaneshige | d689f7e | 2009-09-15 17:26:56 +0900 | [diff] [blame] | 299 | "Disabling domain:bus:device=%04x:%02x:00\n", |
Kenji Kaneshige | 385e249 | 2009-09-15 17:30:14 +0900 | [diff] [blame] | 300 | pci_domain_nr(p_slot->ctrl->pcie->port->subordinate), |
| 301 | p_slot->ctrl->pcie->port->subordinate->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | pciehp_disable_slot(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 303 | mutex_lock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | p_slot->state = STATIC_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 305 | break; |
| 306 | case POWERON_STATE: |
| 307 | mutex_unlock(&p_slot->lock); |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 308 | if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl)) |
| 309 | pciehp_green_led_off(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 310 | mutex_lock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | p_slot->state = STATIC_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 312 | break; |
| 313 | default: |
| 314 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | } |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 316 | mutex_unlock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 318 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Kristen Carlson Accardi | e325e1f | 2007-03-21 11:45:31 -0700 | [diff] [blame] | 321 | void pciehp_queue_pushbutton_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 323 | struct slot *p_slot = container_of(work, struct slot, work.work); |
| 324 | struct power_work_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 326 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 327 | if (!info) { |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 328 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
| 329 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | return; |
| 331 | } |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 332 | info->p_slot = p_slot; |
| 333 | INIT_WORK(&info->work, pciehp_power_thread); |
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 | mutex_lock(&p_slot->lock); |
| 336 | switch (p_slot->state) { |
| 337 | case BLINKINGOFF_STATE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | p_slot->state = POWEROFF_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 339 | break; |
| 340 | case BLINKINGON_STATE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | p_slot->state = POWERON_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 342 | break; |
| 343 | default: |
Jiri Slaby | 6fcaf17 | 2010-01-06 17:47:56 +0100 | [diff] [blame] | 344 | kfree(info); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 345 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | } |
Yijing Wang | c2be6f9 | 2013-01-11 10:15:54 +0800 | [diff] [blame] | 347 | queue_work(p_slot->wq, &info->work); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 348 | out: |
| 349 | mutex_unlock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | } |
| 351 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 352 | /* |
| 353 | * Note: This function must be called with slot->lock held |
| 354 | */ |
| 355 | static void handle_button_press_event(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 357 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | u8 getstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 360 | switch (p_slot->state) { |
| 361 | case STATIC_STATE: |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 362 | pciehp_get_power_status(p_slot, &getstatus); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 363 | if (getstatus) { |
| 364 | p_slot->state = BLINKINGOFF_STATE; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 365 | ctrl_info(ctrl, |
| 366 | "PCI slot #%s - powering off due to button " |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 367 | "press.\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 368 | } else { |
| 369 | p_slot->state = BLINKINGON_STATE; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 370 | ctrl_info(ctrl, |
| 371 | "PCI slot #%s - powering on due to button " |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 372 | "press.\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 373 | } |
| 374 | /* blink green LED and turn off amber */ |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 375 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 376 | pciehp_green_led_blink(p_slot); |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 377 | if (ATTN_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 378 | pciehp_set_attention_status(p_slot, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
Yijing Wang | c2be6f9 | 2013-01-11 10:15:54 +0800 | [diff] [blame] | 380 | queue_delayed_work(p_slot->wq, &p_slot->work, 5*HZ); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 381 | break; |
| 382 | case BLINKINGOFF_STATE: |
| 383 | case BLINKINGON_STATE: |
| 384 | /* |
| 385 | * Cancel if we are still blinking; this means that we |
| 386 | * press the attention again before the 5 sec. limit |
| 387 | * expires to cancel hot-add or hot-remove |
| 388 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 389 | 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] | 390 | cancel_delayed_work(&p_slot->work); |
| 391 | if (p_slot->state == BLINKINGOFF_STATE) { |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 392 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 393 | pciehp_green_led_on(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 394 | } else { |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 395 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 396 | pciehp_green_led_off(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 397 | } |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 398 | if (ATTN_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 399 | pciehp_set_attention_status(p_slot, 0); |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 400 | ctrl_info(ctrl, "PCI slot #%s - action canceled " |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 401 | "due to button press\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 402 | p_slot->state = STATIC_STATE; |
| 403 | break; |
| 404 | case POWEROFF_STATE: |
| 405 | case POWERON_STATE: |
| 406 | /* |
| 407 | * Ignore if the slot is on power-on or power-off state; |
| 408 | * this means that the previous attention button action |
| 409 | * to hot-add or hot-remove is undergoing |
| 410 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 411 | 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] | 412 | break; |
| 413 | default: |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 414 | ctrl_warn(ctrl, "Not a valid state\n"); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 415 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | } |
| 417 | } |
| 418 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 419 | /* |
| 420 | * Note: This function must be called with slot->lock held |
| 421 | */ |
| 422 | static void handle_surprise_event(struct slot *p_slot) |
| 423 | { |
| 424 | u8 getstatus; |
| 425 | struct power_work_info *info; |
| 426 | |
| 427 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 428 | if (!info) { |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 429 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
| 430 | __func__); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 431 | return; |
| 432 | } |
| 433 | info->p_slot = p_slot; |
| 434 | INIT_WORK(&info->work, pciehp_power_thread); |
| 435 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 436 | pciehp_get_adapter_status(p_slot, &getstatus); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 437 | if (!getstatus) |
| 438 | p_slot->state = POWEROFF_STATE; |
| 439 | else |
| 440 | p_slot->state = POWERON_STATE; |
| 441 | |
Yijing Wang | c2be6f9 | 2013-01-11 10:15:54 +0800 | [diff] [blame] | 442 | queue_work(p_slot->wq, &info->work); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | static void interrupt_event_handler(struct work_struct *work) |
| 446 | { |
| 447 | struct event_info *info = container_of(work, struct event_info, work); |
| 448 | struct slot *p_slot = info->p_slot; |
| 449 | struct controller *ctrl = p_slot->ctrl; |
| 450 | |
| 451 | mutex_lock(&p_slot->lock); |
| 452 | switch (info->event_type) { |
| 453 | case INT_BUTTON_PRESS: |
| 454 | handle_button_press_event(p_slot); |
| 455 | break; |
| 456 | case INT_POWER_FAULT: |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 457 | if (!POWER_CTRL(ctrl)) |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 458 | break; |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 459 | if (ATTN_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 460 | pciehp_set_attention_status(p_slot, 1); |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 461 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 462 | pciehp_green_led_off(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 463 | break; |
| 464 | case INT_PRESENCE_ON: |
| 465 | case INT_PRESENCE_OFF: |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 466 | if (!HP_SUPR_RM(ctrl)) |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 467 | break; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 468 | ctrl_dbg(ctrl, "Surprise Removal\n"); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 469 | handle_surprise_event(p_slot); |
| 470 | break; |
| 471 | default: |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 472 | break; |
| 473 | } |
| 474 | mutex_unlock(&p_slot->lock); |
| 475 | |
| 476 | kfree(info); |
| 477 | } |
| 478 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | int pciehp_enable_slot(struct slot *p_slot) |
| 480 | { |
| 481 | u8 getstatus = 0; |
| 482 | int rc; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 483 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 485 | rc = pciehp_get_adapter_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | if (rc || !getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 487 | 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] | 488 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | } |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 490 | if (MRL_SENS(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 491 | rc = pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | if (rc || getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 493 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
| 494 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 495 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | } |
| 497 | } |
Kenji Kaneshige | 36ed27b | 2007-08-09 16:09:36 -0700 | [diff] [blame] | 498 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 499 | if (POWER_CTRL(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 500 | rc = pciehp_get_power_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | if (rc || getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 502 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
| 503 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 504 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | } |
| 506 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 508 | pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 510 | rc = board_added(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | if (rc) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 512 | pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | return rc; |
| 515 | } |
| 516 | |
| 517 | |
| 518 | int pciehp_disable_slot(struct slot *p_slot) |
| 519 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | u8 getstatus = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | int ret = 0; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 522 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
| 524 | if (!p_slot->ctrl) |
| 525 | return 1; |
| 526 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 527 | if (!HP_SUPR_RM(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 528 | ret = pciehp_get_adapter_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | if (ret || !getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 530 | ctrl_info(ctrl, "No adapter on slot(%s)\n", |
| 531 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 532 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | } |
| 534 | } |
| 535 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 536 | if (MRL_SENS(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 537 | ret = pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | if (ret || getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 539 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
| 540 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 541 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | } |
| 543 | } |
| 544 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 545 | if (POWER_CTRL(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 546 | ret = pciehp_get_power_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | if (ret || !getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 548 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
| 549 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 550 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | } |
| 552 | } |
| 553 | |
Kenji Kaneshige | 445f798 | 2009-10-05 17:42:59 +0900 | [diff] [blame] | 554 | return remove_board(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | } |
| 556 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 557 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
| 558 | { |
| 559 | int retval = -ENODEV; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 560 | struct controller *ctrl = p_slot->ctrl; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 561 | |
| 562 | mutex_lock(&p_slot->lock); |
| 563 | switch (p_slot->state) { |
| 564 | case BLINKINGON_STATE: |
| 565 | cancel_delayed_work(&p_slot->work); |
| 566 | case STATIC_STATE: |
| 567 | p_slot->state = POWERON_STATE; |
| 568 | mutex_unlock(&p_slot->lock); |
| 569 | retval = pciehp_enable_slot(p_slot); |
| 570 | mutex_lock(&p_slot->lock); |
| 571 | p_slot->state = STATIC_STATE; |
| 572 | break; |
| 573 | case POWERON_STATE: |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 574 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 575 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 576 | break; |
| 577 | case BLINKINGOFF_STATE: |
| 578 | case POWEROFF_STATE: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 579 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
| 580 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 581 | break; |
| 582 | default: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 583 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
| 584 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 585 | break; |
| 586 | } |
| 587 | mutex_unlock(&p_slot->lock); |
| 588 | |
| 589 | return retval; |
| 590 | } |
| 591 | |
| 592 | int pciehp_sysfs_disable_slot(struct slot *p_slot) |
| 593 | { |
| 594 | int retval = -ENODEV; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 595 | struct controller *ctrl = p_slot->ctrl; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 596 | |
| 597 | mutex_lock(&p_slot->lock); |
| 598 | switch (p_slot->state) { |
| 599 | case BLINKINGOFF_STATE: |
| 600 | cancel_delayed_work(&p_slot->work); |
| 601 | case STATIC_STATE: |
| 602 | p_slot->state = POWEROFF_STATE; |
| 603 | mutex_unlock(&p_slot->lock); |
| 604 | retval = pciehp_disable_slot(p_slot); |
| 605 | mutex_lock(&p_slot->lock); |
| 606 | p_slot->state = STATIC_STATE; |
| 607 | break; |
| 608 | case POWEROFF_STATE: |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 609 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 610 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 611 | break; |
| 612 | case BLINKINGON_STATE: |
| 613 | case POWERON_STATE: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 614 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
| 615 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 616 | break; |
| 617 | default: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 618 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
| 619 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 620 | break; |
| 621 | } |
| 622 | mutex_unlock(&p_slot->lock); |
| 623 | |
| 624 | return retval; |
| 625 | } |