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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/smp_lock.h> |
| 34 | #include <linux/pci.h> |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 35 | #include <linux/workqueue.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include "../pci.h" |
| 37 | #include "pciehp.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 39 | static void interrupt_event_handler(struct work_struct *work); |
| 40 | static int pciehp_enable_slot(struct slot *p_slot); |
| 41 | static int pciehp_disable_slot(struct slot *p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 43 | static int queue_interrupt_event(struct slot *p_slot, u32 event_type) |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 44 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 45 | struct event_info *info; |
| 46 | |
| 47 | info = kmalloc(sizeof(*info), GFP_ATOMIC); |
| 48 | if (!info) |
| 49 | return -ENOMEM; |
| 50 | |
| 51 | info->event_type = event_type; |
| 52 | info->p_slot = p_slot; |
| 53 | INIT_WORK(&info->work, interrupt_event_handler); |
| 54 | |
| 55 | schedule_work(&info->work); |
| 56 | |
| 57 | return 0; |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 58 | } |
| 59 | |
Kenji Kaneshige | 48fe391 | 2006-12-21 17:01:04 -0800 | [diff] [blame] | 60 | u8 pciehp_handle_attention_button(u8 hp_slot, struct controller *ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | struct slot *p_slot; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 63 | u32 event_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | /* Attention Button Change */ |
| 66 | dbg("pciehp: Attention button interrupt received.\n"); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 67 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | /* |
| 71 | * Button pressed - See if need to TAKE ACTION!!! |
| 72 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 73 | info("Button pressed on Slot(%s)\n", p_slot->name); |
| 74 | event_type = INT_BUTTON_PRESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 76 | queue_interrupt_event(p_slot, event_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
| 78 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | } |
| 80 | |
Kenji Kaneshige | 48fe391 | 2006-12-21 17:01:04 -0800 | [diff] [blame] | 81 | u8 pciehp_handle_switch_change(u8 hp_slot, struct controller *ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | struct slot *p_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | u8 getstatus; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 85 | u32 event_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | /* Switch Change */ |
| 88 | dbg("pciehp: Switch interrupt received.\n"); |
| 89 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 92 | |
| 93 | if (getstatus) { |
| 94 | /* |
| 95 | * Switch opened |
| 96 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 97 | info("Latch open on Slot(%s)\n", p_slot->name); |
| 98 | event_type = INT_SWITCH_OPEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } else { |
| 100 | /* |
| 101 | * Switch closed |
| 102 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 103 | info("Latch close on Slot(%s)\n", p_slot->name); |
| 104 | event_type = INT_SWITCH_CLOSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | } |
| 106 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 107 | queue_interrupt_event(p_slot, event_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 109 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | } |
| 111 | |
Kenji Kaneshige | 48fe391 | 2006-12-21 17:01:04 -0800 | [diff] [blame] | 112 | u8 pciehp_handle_presence_change(u8 hp_slot, struct controller *ctrl) |
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 | struct slot *p_slot; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 115 | u32 event_type; |
| 116 | u8 presence_save; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
| 118 | /* Presence Change */ |
| 119 | dbg("pciehp: Presence/Notify input change.\n"); |
| 120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 122 | |
| 123 | /* Switch is open, assume a presence change |
| 124 | * Save the presence state |
| 125 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 126 | p_slot->hpc_ops->get_adapter_status(p_slot, &presence_save); |
| 127 | if (presence_save) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | /* |
| 129 | * Card Present |
| 130 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 131 | info("Card present on Slot(%s)\n", p_slot->name); |
| 132 | event_type = INT_PRESENCE_ON; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | } else { |
| 134 | /* |
| 135 | * Not Present |
| 136 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 137 | info("Card not present on Slot(%s)\n", p_slot->name); |
| 138 | event_type = INT_PRESENCE_OFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | } |
| 140 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 141 | queue_interrupt_event(p_slot, event_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 143 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | } |
| 145 | |
Kenji Kaneshige | 48fe391 | 2006-12-21 17:01:04 -0800 | [diff] [blame] | 146 | u8 pciehp_handle_power_fault(u8 hp_slot, struct controller *ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | struct slot *p_slot; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 149 | u32 event_type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | /* power fault */ |
| 152 | dbg("pciehp: Power fault interrupt received.\n"); |
| 153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 155 | |
| 156 | if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { |
| 157 | /* |
| 158 | * power fault Cleared |
| 159 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 160 | info("Power fault cleared on Slot(%s)\n", p_slot->name); |
| 161 | event_type = INT_POWER_FAULT_CLEAR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | } else { |
| 163 | /* |
| 164 | * power fault |
| 165 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 166 | info("Power fault on Slot(%s)\n", p_slot->name); |
| 167 | event_type = INT_POWER_FAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | info("power fault bit %x set\n", hp_slot); |
| 169 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 171 | queue_interrupt_event(p_slot, event_type); |
| 172 | |
| 173 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | } |
| 175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | /* The following routines constitute the bulk of the |
| 177 | hotplug controller logic |
| 178 | */ |
| 179 | |
| 180 | static void set_slot_off(struct controller *ctrl, struct slot * pslot) |
| 181 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | /* turn off slot, turn on Amber LED, turn off Green LED if supported*/ |
| 183 | if (POWER_CTRL(ctrl->ctrlcap)) { |
| 184 | if (pslot->hpc_ops->power_off_slot(pslot)) { |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 185 | err("%s: Issue of Slot Power Off command failed\n", |
| 186 | __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | return; |
| 188 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | } |
| 190 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 191 | if (PWR_LED(ctrl->ctrlcap)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | pslot->hpc_ops->green_led_off(pslot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 194 | if (ATTN_LED(ctrl->ctrlcap)) { |
| 195 | if (pslot->hpc_ops->set_attention_status(pslot, 1)) { |
| 196 | err("%s: Issue of Set Attention Led command failed\n", |
| 197 | __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | return; |
| 199 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | /** |
| 204 | * board_added - Called after a board has been added to the system. |
| 205 | * |
| 206 | * Turns power on for the board |
| 207 | * Configures board |
| 208 | * |
| 209 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 210 | static int board_added(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | { |
| 212 | u8 hp_slot; |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 213 | int retval = 0; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 214 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 216 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
rajesh.shah@intel.com | 1a9ed1b | 2005-10-31 16:20:10 -0800 | [diff] [blame] | 218 | dbg("%s: slot device, slot offset, hp slot = %d, %d ,%d\n", |
| 219 | __FUNCTION__, p_slot->device, |
| 220 | ctrl->slot_device_offset, hp_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | if (POWER_CTRL(ctrl->ctrlcap)) { |
| 223 | /* Power on slot */ |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 224 | retval = p_slot->hpc_ops->power_on_slot(p_slot); |
| 225 | if (retval) |
| 226 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | } |
| 228 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 229 | if (PWR_LED(ctrl->ctrlcap)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | p_slot->hpc_ops->green_led_blink(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
| 232 | /* Wait for ~1 second */ |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 233 | msleep(1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 235 | /* Check link training status */ |
| 236 | retval = p_slot->hpc_ops->check_lnk_status(ctrl); |
| 237 | if (retval) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | err("%s: Failed to check link status\n", __FUNCTION__); |
| 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 | /* Check for a power fault */ |
Rajesh Shah | 5a49f20 | 2005-11-23 15:44:54 -0800 | [diff] [blame] | 244 | if (p_slot->hpc_ops->query_power_fault(p_slot)) { |
| 245 | dbg("%s: power fault detected\n", __FUNCTION__); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 246 | retval = POWER_FAILURE; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 247 | goto err_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | } |
| 249 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 250 | retval = pciehp_configure_device(p_slot); |
| 251 | if (retval) { |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 252 | err("Cannot add device 0x%x:%x\n", p_slot->bus, |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 253 | p_slot->device); |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 254 | goto err_exit; |
| 255 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 257 | /* |
| 258 | * Some PCI Express root ports require fixup after hot-plug operation. |
| 259 | */ |
| 260 | if (pcie_mch_quirk) |
| 261 | pci_fixup_device(pci_fixup_final, ctrl->pci_dev); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 262 | if (PWR_LED(ctrl->ctrlcap)) |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 263 | p_slot->hpc_ops->green_led_on(p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 264 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | return 0; |
rajesh.shah@intel.com | 71b720c | 2005-10-31 16:20:06 -0800 | [diff] [blame] | 266 | |
| 267 | err_exit: |
| 268 | set_slot_off(ctrl, p_slot); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 269 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | } |
| 271 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | /** |
| 273 | * remove_board - Turns off slot and LED's |
| 274 | * |
| 275 | */ |
rajesh.shah@intel.com | ed6cbcf | 2005-10-31 16:20:09 -0800 | [diff] [blame] | 276 | static int remove_board(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | u8 device; |
| 279 | u8 hp_slot; |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 280 | int retval = 0; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 281 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 283 | retval = pciehp_unconfigure_device(p_slot); |
| 284 | if (retval) |
| 285 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 287 | device = p_slot->device; |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 288 | hp_slot = p_slot->device - ctrl->slot_device_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); |
| 290 | |
| 291 | dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot); |
| 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | if (POWER_CTRL(ctrl->ctrlcap)) { |
| 294 | /* power off slot */ |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 295 | retval = p_slot->hpc_ops->power_off_slot(p_slot); |
| 296 | if (retval) { |
| 297 | err("%s: Issue of Slot Disable command failed\n", |
| 298 | __FUNCTION__); |
| 299 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | } |
| 302 | |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 303 | if (PWR_LED(ctrl->ctrlcap)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | /* turn off Green LED */ |
| 305 | p_slot->hpc_ops->green_led_off(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | return 0; |
| 308 | } |
| 309 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 310 | struct power_work_info { |
| 311 | struct slot *p_slot; |
| 312 | struct work_struct work; |
| 313 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
| 315 | /** |
| 316 | * pciehp_pushbutton_thread |
| 317 | * |
| 318 | * Scheduled procedure to handle blocking stuff for the pushbuttons |
| 319 | * Handles all pending events and exits. |
| 320 | * |
| 321 | */ |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 322 | static void pciehp_power_thread(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 324 | struct power_work_info *info = |
| 325 | container_of(work, struct power_work_info, work); |
| 326 | struct slot *p_slot = info->p_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 328 | mutex_lock(&p_slot->lock); |
| 329 | switch (p_slot->state) { |
| 330 | case POWEROFF_STATE: |
| 331 | mutex_unlock(&p_slot->lock); |
| 332 | dbg("%s: disabling bus:device(%x:%x)\n", |
| 333 | __FUNCTION__, p_slot->bus, p_slot->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | pciehp_disable_slot(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 335 | mutex_lock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | p_slot->state = STATIC_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 337 | break; |
| 338 | case POWERON_STATE: |
| 339 | mutex_unlock(&p_slot->lock); |
Kenji Kaneshige | 44ef4ce | 2006-12-21 17:01:09 -0800 | [diff] [blame] | 340 | if (pciehp_enable_slot(p_slot) && |
| 341 | PWR_LED(p_slot->ctrl->ctrlcap)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | p_slot->hpc_ops->green_led_off(p_slot); |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 343 | mutex_lock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | p_slot->state = STATIC_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 345 | break; |
| 346 | default: |
| 347 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | } |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 349 | mutex_unlock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 351 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 354 | void queue_pushbutton_work(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 356 | struct slot *p_slot = container_of(work, struct slot, work.work); |
| 357 | struct power_work_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 359 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 360 | if (!info) { |
| 361 | err("%s: Cannot allocate memory\n", __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | return; |
| 363 | } |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 364 | info->p_slot = p_slot; |
| 365 | INIT_WORK(&info->work, pciehp_power_thread); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 367 | mutex_lock(&p_slot->lock); |
| 368 | switch (p_slot->state) { |
| 369 | case BLINKINGOFF_STATE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | p_slot->state = POWEROFF_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 371 | break; |
| 372 | case BLINKINGON_STATE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | p_slot->state = POWERON_STATE; |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 374 | break; |
| 375 | default: |
| 376 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | } |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 378 | queue_work(pciehp_wq, &info->work); |
| 379 | out: |
| 380 | mutex_unlock(&p_slot->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | } |
| 382 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | static int update_slot_info(struct slot *slot) |
| 384 | { |
| 385 | struct hotplug_slot_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | int result; |
| 387 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 388 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | if (!info) |
| 390 | return -ENOMEM; |
| 391 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | slot->hpc_ops->get_power_status(slot, &(info->power_status)); |
| 393 | slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); |
| 394 | slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); |
| 395 | slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); |
| 396 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | result = pci_hp_change_slot_info(slot->hotplug_slot, info); |
| 398 | kfree (info); |
| 399 | return result; |
| 400 | } |
| 401 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 402 | /* |
| 403 | * Note: This function must be called with slot->lock held |
| 404 | */ |
| 405 | static void handle_button_press_event(struct slot *p_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | { |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 407 | struct controller *ctrl = p_slot->ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | u8 getstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 410 | switch (p_slot->state) { |
| 411 | case STATIC_STATE: |
| 412 | p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 413 | if (getstatus) { |
| 414 | p_slot->state = BLINKINGOFF_STATE; |
| 415 | info("PCI slot #%s - powering off due to button " |
| 416 | "press.\n", p_slot->name); |
| 417 | } else { |
| 418 | p_slot->state = BLINKINGON_STATE; |
| 419 | info("PCI slot #%s - powering on due to button " |
| 420 | "press.\n", p_slot->name); |
| 421 | } |
| 422 | /* blink green LED and turn off amber */ |
| 423 | if (PWR_LED(ctrl->ctrlcap)) |
| 424 | p_slot->hpc_ops->green_led_blink(p_slot); |
| 425 | if (ATTN_LED(ctrl->ctrlcap)) |
| 426 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 428 | schedule_delayed_work(&p_slot->work, 5*HZ); |
| 429 | break; |
| 430 | case BLINKINGOFF_STATE: |
| 431 | case BLINKINGON_STATE: |
| 432 | /* |
| 433 | * Cancel if we are still blinking; this means that we |
| 434 | * press the attention again before the 5 sec. limit |
| 435 | * expires to cancel hot-add or hot-remove |
| 436 | */ |
| 437 | info("Button cancel on Slot(%s)\n", p_slot->name); |
| 438 | dbg("%s: button cancel\n", __FUNCTION__); |
| 439 | cancel_delayed_work(&p_slot->work); |
| 440 | if (p_slot->state == BLINKINGOFF_STATE) { |
| 441 | if (PWR_LED(ctrl->ctrlcap)) |
| 442 | p_slot->hpc_ops->green_led_on(p_slot); |
| 443 | } else { |
| 444 | if (PWR_LED(ctrl->ctrlcap)) |
| 445 | p_slot->hpc_ops->green_led_off(p_slot); |
| 446 | } |
| 447 | if (ATTN_LED(ctrl->ctrlcap)) |
| 448 | p_slot->hpc_ops->set_attention_status(p_slot, 0); |
| 449 | info("PCI slot #%s - action canceled due to button press\n", |
| 450 | p_slot->name); |
| 451 | p_slot->state = STATIC_STATE; |
| 452 | break; |
| 453 | case POWEROFF_STATE: |
| 454 | case POWERON_STATE: |
| 455 | /* |
| 456 | * Ignore if the slot is on power-on or power-off state; |
| 457 | * this means that the previous attention button action |
| 458 | * to hot-add or hot-remove is undergoing |
| 459 | */ |
| 460 | info("Button ignore on Slot(%s)\n", p_slot->name); |
| 461 | update_slot_info(p_slot); |
| 462 | break; |
| 463 | default: |
| 464 | warn("Not a valid state\n"); |
| 465 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | } |
| 467 | } |
| 468 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 469 | /* |
| 470 | * Note: This function must be called with slot->lock held |
| 471 | */ |
| 472 | static void handle_surprise_event(struct slot *p_slot) |
| 473 | { |
| 474 | u8 getstatus; |
| 475 | struct power_work_info *info; |
| 476 | |
| 477 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 478 | if (!info) { |
| 479 | err("%s: Cannot allocate memory\n", __FUNCTION__); |
| 480 | return; |
| 481 | } |
| 482 | info->p_slot = p_slot; |
| 483 | INIT_WORK(&info->work, pciehp_power_thread); |
| 484 | |
| 485 | p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
| 486 | if (!getstatus) |
| 487 | p_slot->state = POWEROFF_STATE; |
| 488 | else |
| 489 | p_slot->state = POWERON_STATE; |
| 490 | |
| 491 | queue_work(pciehp_wq, &info->work); |
| 492 | } |
| 493 | |
| 494 | static void interrupt_event_handler(struct work_struct *work) |
| 495 | { |
| 496 | struct event_info *info = container_of(work, struct event_info, work); |
| 497 | struct slot *p_slot = info->p_slot; |
| 498 | struct controller *ctrl = p_slot->ctrl; |
| 499 | |
| 500 | mutex_lock(&p_slot->lock); |
| 501 | switch (info->event_type) { |
| 502 | case INT_BUTTON_PRESS: |
| 503 | handle_button_press_event(p_slot); |
| 504 | break; |
| 505 | case INT_POWER_FAULT: |
| 506 | if (!POWER_CTRL(ctrl->ctrlcap)) |
| 507 | break; |
| 508 | if (ATTN_LED(ctrl->ctrlcap)) |
| 509 | p_slot->hpc_ops->set_attention_status(p_slot, 1); |
| 510 | if (PWR_LED(ctrl->ctrlcap)) |
| 511 | p_slot->hpc_ops->green_led_off(p_slot); |
| 512 | break; |
| 513 | case INT_PRESENCE_ON: |
| 514 | case INT_PRESENCE_OFF: |
| 515 | if (!HP_SUPR_RM(ctrl->ctrlcap)) |
| 516 | break; |
| 517 | dbg("Surprise Removal\n"); |
| 518 | update_slot_info(p_slot); |
| 519 | handle_surprise_event(p_slot); |
| 520 | break; |
| 521 | default: |
| 522 | update_slot_info(p_slot); |
| 523 | break; |
| 524 | } |
| 525 | mutex_unlock(&p_slot->lock); |
| 526 | |
| 527 | kfree(info); |
| 528 | } |
| 529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | int pciehp_enable_slot(struct slot *p_slot) |
| 531 | { |
| 532 | u8 getstatus = 0; |
| 533 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | /* Check to see if (latch closed, card present, power off) */ |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 536 | mutex_lock(&p_slot->ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | |
| 538 | rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
| 539 | if (rc || !getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 540 | info("%s: no adapter on slot(%s)\n", __FUNCTION__, |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 541 | p_slot->name); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 542 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 543 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | } |
| 545 | if (MRL_SENS(p_slot->ctrl->ctrlcap)) { |
| 546 | rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 547 | if (rc || getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 548 | info("%s: latch open on slot(%s)\n", __FUNCTION__, |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 549 | p_slot->name); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 550 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 551 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | } |
| 553 | } |
| 554 | |
| 555 | if (POWER_CTRL(p_slot->ctrl->ctrlcap)) { |
| 556 | rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 557 | if (rc || getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 558 | info("%s: already enabled on slot(%s)\n", __FUNCTION__, |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 559 | p_slot->name); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 560 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 561 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | } |
| 563 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 567 | rc = board_added(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | if (rc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | } |
| 571 | |
Eric Sesterhenn | 9ef9977 | 2006-09-25 00:56:53 +0200 | [diff] [blame] | 572 | update_slot_info(p_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame] | 574 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | return rc; |
| 576 | } |
| 577 | |
| 578 | |
| 579 | int pciehp_disable_slot(struct slot *p_slot) |
| 580 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | u8 getstatus = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | int ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | |
| 584 | if (!p_slot->ctrl) |
| 585 | return 1; |
| 586 | |
| 587 | /* Check to see if (latch closed, card present, power on) */ |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 588 | mutex_lock(&p_slot->ctrl->crit_sect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
| 590 | if (!HP_SUPR_RM(p_slot->ctrl->ctrlcap)) { |
| 591 | ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); |
| 592 | if (ret || !getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 593 | info("%s: no adapter on slot(%s)\n", __FUNCTION__, |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 594 | p_slot->name); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 595 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 596 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | } |
| 598 | } |
| 599 | |
| 600 | if (MRL_SENS(p_slot->ctrl->ctrlcap)) { |
| 601 | ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); |
| 602 | if (ret || getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 603 | info("%s: latch open on slot(%s)\n", __FUNCTION__, |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 604 | p_slot->name); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 605 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 606 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | } |
| 608 | } |
| 609 | |
| 610 | if (POWER_CTRL(p_slot->ctrl->ctrlcap)) { |
| 611 | ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); |
| 612 | if (ret || !getstatus) { |
Kenji Kaneshige | 49ed2b4 | 2006-09-22 10:17:10 -0700 | [diff] [blame] | 613 | info("%s: already disabled slot(%s)\n", __FUNCTION__, |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 614 | p_slot->name); |
Ingo Molnar | 6aa4cdd | 2006-01-13 16:02:15 +0100 | [diff] [blame] | 615 | mutex_unlock(&p_slot->ctrl->crit_sect); |
Kenji Kaneshige | c9d86d7 | 2006-09-19 17:04:33 -0700 | [diff] [blame] | 616 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | } |
| 618 | } |
| 619 | |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 620 | ret = remove_board(p_slot); |
| 621 | update_slot_info(p_slot); |
Kenji Kaneshige | dd5619c | 2006-09-22 10:17:29 -0700 | [diff] [blame] | 622 | |
| 623 | mutex_unlock(&p_slot->ctrl->crit_sect); |
rajesh.shah@intel.com | ca22a5e | 2005-10-31 16:20:08 -0800 | [diff] [blame] | 624 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | } |
| 626 | |
Kenji Kaneshige | 5d386e1 | 2007-03-06 15:02:26 -0800 | [diff] [blame^] | 627 | int pciehp_sysfs_enable_slot(struct slot *p_slot) |
| 628 | { |
| 629 | int retval = -ENODEV; |
| 630 | |
| 631 | mutex_lock(&p_slot->lock); |
| 632 | switch (p_slot->state) { |
| 633 | case BLINKINGON_STATE: |
| 634 | cancel_delayed_work(&p_slot->work); |
| 635 | case STATIC_STATE: |
| 636 | p_slot->state = POWERON_STATE; |
| 637 | mutex_unlock(&p_slot->lock); |
| 638 | retval = pciehp_enable_slot(p_slot); |
| 639 | mutex_lock(&p_slot->lock); |
| 640 | p_slot->state = STATIC_STATE; |
| 641 | break; |
| 642 | case POWERON_STATE: |
| 643 | info("Slot %s is already in powering on state\n", |
| 644 | p_slot->name); |
| 645 | break; |
| 646 | case BLINKINGOFF_STATE: |
| 647 | case POWEROFF_STATE: |
| 648 | info("Already enabled on slot %s\n", p_slot->name); |
| 649 | break; |
| 650 | default: |
| 651 | err("Not a valid state on slot %s\n", p_slot->name); |
| 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; |
| 662 | |
| 663 | mutex_lock(&p_slot->lock); |
| 664 | switch (p_slot->state) { |
| 665 | case BLINKINGOFF_STATE: |
| 666 | cancel_delayed_work(&p_slot->work); |
| 667 | case STATIC_STATE: |
| 668 | p_slot->state = POWEROFF_STATE; |
| 669 | mutex_unlock(&p_slot->lock); |
| 670 | retval = pciehp_disable_slot(p_slot); |
| 671 | mutex_lock(&p_slot->lock); |
| 672 | p_slot->state = STATIC_STATE; |
| 673 | break; |
| 674 | case POWEROFF_STATE: |
| 675 | info("Slot %s is already in powering off state\n", |
| 676 | p_slot->name); |
| 677 | break; |
| 678 | case BLINKINGON_STATE: |
| 679 | case POWERON_STATE: |
| 680 | info("Already disabled on slot %s\n", p_slot->name); |
| 681 | break; |
| 682 | default: |
| 683 | err("Not a valid state on slot %s\n", p_slot->name); |
| 684 | break; |
| 685 | } |
| 686 | mutex_unlock(&p_slot->lock); |
| 687 | |
| 688 | return retval; |
| 689 | } |