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 | |
Tejun Heo | a827ea3 | 2010-10-18 08:31:02 +0200 | [diff] [blame] | 52 | queue_work(pciehp_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 | 5651c48c | 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 | 5651c48c | 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 | |
Kenji Kaneshige | 0cab084 | 2011-07-11 10:15:45 +0900 | [diff] [blame] | 216 | /* Wait for 1 second after checking link training status */ |
| 217 | msleep(1000); |
| 218 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | /* Check for a power fault */ |
Kenji Kaneshige | 5651c48c | 2009-11-13 15:14:10 +0900 | [diff] [blame] | 220 | if (ctrl->power_fault_detected || pciehp_query_power_fault(p_slot)) { |
| 221 | 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] | 222 | retval = -EIO; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 223 | goto err_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | } |
| 225 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 226 | retval = pciehp_configure_device(p_slot); |
| 227 | if (retval) { |
Kenji Kaneshige | d689f7e | 2009-09-15 17:26:56 +0900 | [diff] [blame] | 228 | ctrl_err(ctrl, "Cannot add device at %04x:%02x:00\n", |
| 229 | pci_domain_nr(parent), parent->number); |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 230 | goto err_exit; |
| 231 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 233 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 234 | pciehp_green_led_on(p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | return 0; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 237 | |
| 238 | err_exit: |
| 239 | set_slot_off(ctrl, p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 240 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | } |
| 242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 244 | * remove_board - Turns off slot and LEDs |
| 245 | * @p_slot: slot where board is being removed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 247 | static int remove_board(struct slot *p_slot) |
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 | int retval = 0; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 250 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 252 | retval = pciehp_unconfigure_device(p_slot); |
| 253 | if (retval) |
| 254 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 256 | if (POWER_CTRL(ctrl)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | /* power off slot */ |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 258 | retval = pciehp_power_off_slot(p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 259 | if (retval) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 260 | ctrl_err(ctrl, |
| 261 | "Issue of Slot Disable command failed\n"); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 262 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 273 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 274 | pciehp_green_led_off(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | return 0; |
| 277 | } |
| 278 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 279 | struct power_work_info { |
| 280 | struct slot *p_slot; |
| 281 | struct work_struct work; |
| 282 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | |
| 284 | /** |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 285 | * pciehp_power_thread - handle pushbutton events |
| 286 | * @work: &struct work_struct describing work to be done |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 288 | * Scheduled procedure to handle blocking stuff for the pushbuttons. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | * Handles all pending events and exits. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 291 | static void pciehp_power_thread(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 293 | struct power_work_info *info = |
| 294 | container_of(work, struct power_work_info, work); |
| 295 | struct slot *p_slot = info->p_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 297 | mutex_lock(&p_slot->lock); |
| 298 | switch (p_slot->state) { |
| 299 | case POWEROFF_STATE: |
| 300 | mutex_unlock(&p_slot->lock); |
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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | pciehp_disable_slot(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 306 | mutex_lock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | p_slot->state = STATIC_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 308 | break; |
| 309 | case POWERON_STATE: |
| 310 | mutex_unlock(&p_slot->lock); |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 311 | if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl)) |
| 312 | pciehp_green_led_off(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 313 | mutex_lock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | p_slot->state = STATIC_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 315 | break; |
| 316 | default: |
| 317 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | } |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 319 | mutex_unlock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 321 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | } |
| 323 | |
Kristen Carlson Accardi | e325e1f | 2007-03-21 11:45:31 -0700 | [diff] [blame] | 324 | void pciehp_queue_pushbutton_work(struct work_struct *work) |
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 | struct slot *p_slot = container_of(work, struct slot, work.work); |
| 327 | struct power_work_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 329 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 330 | if (!info) { |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 331 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
| 332 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | return; |
| 334 | } |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 335 | info->p_slot = p_slot; |
| 336 | INIT_WORK(&info->work, pciehp_power_thread); |
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 | mutex_lock(&p_slot->lock); |
| 339 | switch (p_slot->state) { |
| 340 | case BLINKINGOFF_STATE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | p_slot->state = POWEROFF_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 342 | break; |
| 343 | case BLINKINGON_STATE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | p_slot->state = POWERON_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 345 | break; |
| 346 | default: |
Jiri Slaby | 6fcaf17 | 2010-01-06 17:47:56 +0100 | [diff] [blame] | 347 | kfree(info); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 348 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | } |
Tejun Heo | a827ea3 | 2010-10-18 08:31:02 +0200 | [diff] [blame] | 350 | queue_work(pciehp_ordered_wq, &info->work); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 351 | out: |
| 352 | mutex_unlock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | } |
| 354 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 355 | /* |
| 356 | * Note: This function must be called with slot->lock held |
| 357 | */ |
| 358 | static void handle_button_press_event(struct slot *p_slot) |
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 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | u8 getstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 363 | switch (p_slot->state) { |
| 364 | case STATIC_STATE: |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 365 | pciehp_get_power_status(p_slot, &getstatus); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 366 | if (getstatus) { |
| 367 | p_slot->state = BLINKINGOFF_STATE; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 368 | ctrl_info(ctrl, |
| 369 | "PCI slot #%s - powering off due to button " |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 370 | "press.\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 371 | } else { |
| 372 | p_slot->state = BLINKINGON_STATE; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 373 | ctrl_info(ctrl, |
| 374 | "PCI slot #%s - powering on due to button " |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 375 | "press.\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 376 | } |
| 377 | /* blink green LED and turn off amber */ |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 378 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 379 | pciehp_green_led_blink(p_slot); |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 380 | if (ATTN_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 381 | pciehp_set_attention_status(p_slot, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | |
Tejun Heo | a827ea3 | 2010-10-18 08:31:02 +0200 | [diff] [blame] | 383 | queue_delayed_work(pciehp_wq, &p_slot->work, 5*HZ); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 384 | break; |
| 385 | case BLINKINGOFF_STATE: |
| 386 | case BLINKINGON_STATE: |
| 387 | /* |
| 388 | * Cancel if we are still blinking; this means that we |
| 389 | * press the attention again before the 5 sec. limit |
| 390 | * expires to cancel hot-add or hot-remove |
| 391 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 392 | 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] | 393 | cancel_delayed_work(&p_slot->work); |
| 394 | if (p_slot->state == BLINKINGOFF_STATE) { |
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_on(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 397 | } else { |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 398 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 399 | pciehp_green_led_off(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 400 | } |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 401 | if (ATTN_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 402 | pciehp_set_attention_status(p_slot, 0); |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 403 | ctrl_info(ctrl, "PCI slot #%s - action canceled " |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 404 | "due to button press\n", slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 405 | p_slot->state = STATIC_STATE; |
| 406 | break; |
| 407 | case POWEROFF_STATE: |
| 408 | case POWERON_STATE: |
| 409 | /* |
| 410 | * Ignore if the slot is on power-on or power-off state; |
| 411 | * this means that the previous attention button action |
| 412 | * to hot-add or hot-remove is undergoing |
| 413 | */ |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 414 | 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] | 415 | break; |
| 416 | default: |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 417 | ctrl_warn(ctrl, "Not a valid state\n"); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 418 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | } |
| 420 | } |
| 421 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 422 | /* |
| 423 | * Note: This function must be called with slot->lock held |
| 424 | */ |
| 425 | static void handle_surprise_event(struct slot *p_slot) |
| 426 | { |
| 427 | u8 getstatus; |
| 428 | struct power_work_info *info; |
| 429 | |
| 430 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 431 | if (!info) { |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 432 | ctrl_err(p_slot->ctrl, "%s: Cannot allocate memory\n", |
| 433 | __func__); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 434 | return; |
| 435 | } |
| 436 | info->p_slot = p_slot; |
| 437 | INIT_WORK(&info->work, pciehp_power_thread); |
| 438 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 439 | pciehp_get_adapter_status(p_slot, &getstatus); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 440 | if (!getstatus) |
| 441 | p_slot->state = POWEROFF_STATE; |
| 442 | else |
| 443 | p_slot->state = POWERON_STATE; |
| 444 | |
Tejun Heo | a827ea3 | 2010-10-18 08:31:02 +0200 | [diff] [blame] | 445 | queue_work(pciehp_ordered_wq, &info->work); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | static void interrupt_event_handler(struct work_struct *work) |
| 449 | { |
| 450 | struct event_info *info = container_of(work, struct event_info, work); |
| 451 | struct slot *p_slot = info->p_slot; |
| 452 | struct controller *ctrl = p_slot->ctrl; |
| 453 | |
| 454 | mutex_lock(&p_slot->lock); |
| 455 | switch (info->event_type) { |
| 456 | case INT_BUTTON_PRESS: |
| 457 | handle_button_press_event(p_slot); |
| 458 | break; |
| 459 | case INT_POWER_FAULT: |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 460 | if (!POWER_CTRL(ctrl)) |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 461 | break; |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 462 | if (ATTN_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 463 | pciehp_set_attention_status(p_slot, 1); |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 464 | if (PWR_LED(ctrl)) |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 465 | pciehp_green_led_off(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 466 | break; |
| 467 | case INT_PRESENCE_ON: |
| 468 | case INT_PRESENCE_OFF: |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 469 | if (!HP_SUPR_RM(ctrl)) |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 470 | break; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 471 | ctrl_dbg(ctrl, "Surprise Removal\n"); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 472 | handle_surprise_event(p_slot); |
| 473 | break; |
| 474 | default: |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 475 | break; |
| 476 | } |
| 477 | mutex_unlock(&p_slot->lock); |
| 478 | |
| 479 | kfree(info); |
| 480 | } |
| 481 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | int pciehp_enable_slot(struct slot *p_slot) |
| 483 | { |
| 484 | u8 getstatus = 0; |
| 485 | int rc; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 486 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 488 | rc = pciehp_get_adapter_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | if (rc || !getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 490 | 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] | 491 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | } |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 493 | if (MRL_SENS(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 494 | rc = pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | if (rc || getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 496 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
| 497 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 498 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | } |
| 500 | } |
Kenji Kaneshige | 36ed27b | 2007-08-09 16:09:36 -0700 | [diff] [blame] | 501 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 502 | if (POWER_CTRL(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 503 | rc = pciehp_get_power_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | if (rc || getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 505 | ctrl_info(ctrl, "Already enabled on slot(%s)\n", |
| 506 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 507 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | } |
| 509 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 511 | pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 513 | rc = board_added(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | if (rc) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 515 | pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | return rc; |
| 518 | } |
| 519 | |
| 520 | |
| 521 | int pciehp_disable_slot(struct slot *p_slot) |
| 522 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | u8 getstatus = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | int ret = 0; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 525 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
| 527 | if (!p_slot->ctrl) |
| 528 | return 1; |
| 529 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 530 | if (!HP_SUPR_RM(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 531 | ret = pciehp_get_adapter_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | if (ret || !getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 533 | ctrl_info(ctrl, "No adapter on slot(%s)\n", |
| 534 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 535 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | } |
| 537 | } |
| 538 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 539 | if (MRL_SENS(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 540 | ret = pciehp_get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | if (ret || getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 542 | ctrl_info(ctrl, "Latch open on slot(%s)\n", |
| 543 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 544 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | } |
| 546 | } |
| 547 | |
Kenji Kaneshige | ae416e6 | 2008-04-25 14:39:06 -0700 | [diff] [blame] | 548 | if (POWER_CTRL(p_slot->ctrl)) { |
Kenji Kaneshige | 82a9e79 | 2009-09-15 17:30:48 +0900 | [diff] [blame] | 549 | ret = pciehp_get_power_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | if (ret || !getstatus) { |
Taku Izumi | 18b341b | 2008-10-23 11:47:32 +0900 | [diff] [blame] | 551 | ctrl_info(ctrl, "Already disabled on slot(%s)\n", |
| 552 | slot_name(p_slot)); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 553 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | } |
| 555 | } |
| 556 | |
Kenji Kaneshige | 445f798 | 2009-10-05 17:42:59 +0900 | [diff] [blame] | 557 | return remove_board(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | } |
| 559 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 560 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
| 561 | { |
| 562 | int retval = -ENODEV; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 563 | struct controller *ctrl = p_slot->ctrl; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 564 | |
| 565 | mutex_lock(&p_slot->lock); |
| 566 | switch (p_slot->state) { |
| 567 | case BLINKINGON_STATE: |
| 568 | cancel_delayed_work(&p_slot->work); |
| 569 | case STATIC_STATE: |
| 570 | p_slot->state = POWERON_STATE; |
| 571 | mutex_unlock(&p_slot->lock); |
| 572 | retval = pciehp_enable_slot(p_slot); |
| 573 | mutex_lock(&p_slot->lock); |
| 574 | p_slot->state = STATIC_STATE; |
| 575 | break; |
| 576 | case POWERON_STATE: |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 577 | ctrl_info(ctrl, "Slot %s is already in powering on state\n", |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 578 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 579 | break; |
| 580 | case BLINKINGOFF_STATE: |
| 581 | case POWEROFF_STATE: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 582 | ctrl_info(ctrl, "Already enabled on slot %s\n", |
| 583 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 584 | break; |
| 585 | default: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 586 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
| 587 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 588 | break; |
| 589 | } |
| 590 | mutex_unlock(&p_slot->lock); |
| 591 | |
| 592 | return retval; |
| 593 | } |
| 594 | |
| 595 | int pciehp_sysfs_disable_slot(struct slot *p_slot) |
| 596 | { |
| 597 | int retval = -ENODEV; |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 598 | struct controller *ctrl = p_slot->ctrl; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 599 | |
| 600 | mutex_lock(&p_slot->lock); |
| 601 | switch (p_slot->state) { |
| 602 | case BLINKINGOFF_STATE: |
| 603 | cancel_delayed_work(&p_slot->work); |
| 604 | case STATIC_STATE: |
| 605 | p_slot->state = POWEROFF_STATE; |
| 606 | mutex_unlock(&p_slot->lock); |
| 607 | retval = pciehp_disable_slot(p_slot); |
| 608 | mutex_lock(&p_slot->lock); |
| 609 | p_slot->state = STATIC_STATE; |
| 610 | break; |
| 611 | case POWEROFF_STATE: |
Taku Izumi | 7f2feec | 2008-09-05 12:11:26 +0900 | [diff] [blame] | 612 | ctrl_info(ctrl, "Slot %s is already in powering off state\n", |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 613 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 614 | break; |
| 615 | case BLINKINGON_STATE: |
| 616 | case POWERON_STATE: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 617 | ctrl_info(ctrl, "Already disabled on slot %s\n", |
| 618 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 619 | break; |
| 620 | default: |
Alex Chiang | e1acb24 | 2008-10-20 17:41:38 -0600 | [diff] [blame] | 621 | ctrl_err(ctrl, "Not a valid state on slot %s\n", |
| 622 | slot_name(p_slot)); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame] | 623 | break; |
| 624 | } |
| 625 | mutex_unlock(&p_slot->lock); |
| 626 | |
| 627 | return retval; |
| 628 | } |