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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 *
26 * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
27 *
28 */
29
30#include <linux/module.h>
31#include <linux/moduleparam.h>
32#include <linux/kernel.h>
33#include <linux/slab.h>
34#include <linux/types.h>
35#include <linux/pci.h>
36#include "pciehp.h"
37#include <linux/interrupt.h>
38#include <linux/time.h>
39
40/* Global variables */
41bool pciehp_debug;
42bool pciehp_poll_mode;
43int pciehp_poll_time;
44bool pciehp_force;
45struct workqueue_struct *pciehp_wq;
46
47#define DRIVER_VERSION "0.4"
48#define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
49#define DRIVER_DESC "PCI Express Hot Plug Controller Driver"
50
51MODULE_AUTHOR(DRIVER_AUTHOR);
52MODULE_DESCRIPTION(DRIVER_DESC);
53MODULE_LICENSE("GPL");
54
55module_param(pciehp_debug, bool, 0644);
56module_param(pciehp_poll_mode, bool, 0644);
57module_param(pciehp_poll_time, int, 0644);
58module_param(pciehp_force, bool, 0644);
59MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
60MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
61MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
62MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if OSHP is missing");
63
64#define PCIE_MODULE_NAME "pciehp"
65
66static int set_attention_status (struct hotplug_slot *slot, u8 value);
67static int enable_slot (struct hotplug_slot *slot);
68static int disable_slot (struct hotplug_slot *slot);
69static int get_power_status (struct hotplug_slot *slot, u8 *value);
70static int get_attention_status (struct hotplug_slot *slot, u8 *value);
71static int get_latch_status (struct hotplug_slot *slot, u8 *value);
72static int get_adapter_status (struct hotplug_slot *slot, u8 *value);
73
74/**
75 * release_slot - free up the memory used by a slot
76 * @hotplug_slot: slot to free
77 */
78static void release_slot(struct hotplug_slot *hotplug_slot)
79{
80 struct slot *slot = hotplug_slot->private;
81
82 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
83 __func__, hotplug_slot_name(hotplug_slot));
84
85 kfree(hotplug_slot->ops);
86 kfree(hotplug_slot->info);
87 kfree(hotplug_slot);
88}
89
90static int init_slot(struct controller *ctrl)
91{
92 struct slot *slot = ctrl->slot;
93 struct hotplug_slot *hotplug = NULL;
94 struct hotplug_slot_info *info = NULL;
95 struct hotplug_slot_ops *ops = NULL;
96 char name[SLOT_NAME_SIZE];
97 int retval = -ENOMEM;
98
99 hotplug = kzalloc(sizeof(*hotplug), GFP_KERNEL);
100 if (!hotplug)
101 goto out;
102
103 info = kzalloc(sizeof(*info), GFP_KERNEL);
104 if (!info)
105 goto out;
106
107 /* Setup hotplug slot ops */
108 ops = kzalloc(sizeof(*ops), GFP_KERNEL);
109 if (!ops)
110 goto out;
111 ops->enable_slot = enable_slot;
112 ops->disable_slot = disable_slot;
113 ops->get_power_status = get_power_status;
114 ops->get_adapter_status = get_adapter_status;
115 if (MRL_SENS(ctrl))
116 ops->get_latch_status = get_latch_status;
117 if (ATTN_LED(ctrl)) {
118 ops->get_attention_status = get_attention_status;
119 ops->set_attention_status = set_attention_status;
120 }
121
122 /* register this slot with the hotplug pci core */
123 hotplug->info = info;
124 hotplug->private = slot;
125 hotplug->release = &release_slot;
126 hotplug->ops = ops;
127 slot->hotplug_slot = hotplug;
128 snprintf(name, SLOT_NAME_SIZE, "%u", PSN(ctrl));
129
130 ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:00 sun=%x\n",
131 pci_domain_nr(ctrl->pcie->port->subordinate),
132 ctrl->pcie->port->subordinate->number, PSN(ctrl));
133 retval = pci_hp_register(hotplug,
134 ctrl->pcie->port->subordinate, 0, name);
135 if (retval)
136 ctrl_err(ctrl,
137 "pci_hp_register failed with error %d\n", retval);
138out:
139 if (retval) {
140 kfree(ops);
141 kfree(info);
142 kfree(hotplug);
143 }
144 return retval;
145}
146
147static void cleanup_slot(struct controller *ctrl)
148{
149 pci_hp_deregister(ctrl->slot->hotplug_slot);
150}
151
152/*
153 * set_attention_status - Turns the Amber LED for a slot on, off or blink
154 */
155static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
156{
157 struct slot *slot = hotplug_slot->private;
158
159 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
160 __func__, slot_name(slot));
161
162 return pciehp_set_attention_status(slot, status);
163}
164
165
166static int enable_slot(struct hotplug_slot *hotplug_slot)
167{
168 struct slot *slot = hotplug_slot->private;
169
170 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
171 __func__, slot_name(slot));
172
173 return pciehp_sysfs_enable_slot(slot);
174}
175
176
177static int disable_slot(struct hotplug_slot *hotplug_slot)
178{
179 struct slot *slot = hotplug_slot->private;
180
181 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
182 __func__, slot_name(slot));
183
184 return pciehp_sysfs_disable_slot(slot);
185}
186
187static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
188{
189 struct slot *slot = hotplug_slot->private;
190
191 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
192 __func__, slot_name(slot));
193
194 return pciehp_get_power_status(slot, value);
195}
196
197static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
198{
199 struct slot *slot = hotplug_slot->private;
200
201 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
202 __func__, slot_name(slot));
203
204 return pciehp_get_attention_status(slot, value);
205}
206
207static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
208{
209 struct slot *slot = hotplug_slot->private;
210
211 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
212 __func__, slot_name(slot));
213
214 return pciehp_get_latch_status(slot, value);
215}
216
217static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
218{
219 struct slot *slot = hotplug_slot->private;
220
221 ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
222 __func__, slot_name(slot));
223
224 return pciehp_get_adapter_status(slot, value);
225}
226
227static int pciehp_probe(struct pcie_device *dev)
228{
229 int rc;
230 struct controller *ctrl;
231 struct slot *slot;
232 u8 occupied, poweron;
233
234 if (pciehp_force)
235 dev_info(&dev->device,
236 "Bypassing BIOS check for pciehp use on %s\n",
237 pci_name(dev->port));
238 else if (pciehp_acpi_slot_detection_check(dev->port))
239 goto err_out_none;
240
241 ctrl = pcie_init(dev);
242 if (!ctrl) {
243 dev_err(&dev->device, "Controller initialization failed\n");
244 goto err_out_none;
245 }
246 set_service_data(dev, ctrl);
247
248 /* Setup the slot information structures */
249 rc = init_slot(ctrl);
250 if (rc) {
251 if (rc == -EBUSY)
252 ctrl_warn(ctrl, "Slot already registered by another "
253 "hotplug driver\n");
254 else
255 ctrl_err(ctrl, "Slot initialization failed\n");
256 goto err_out_release_ctlr;
257 }
258
259 /* Enable events after we have setup the data structures */
260 rc = pcie_init_notification(ctrl);
261 if (rc) {
262 ctrl_err(ctrl, "Notification initialization failed\n");
263 goto err_out_free_ctrl_slot;
264 }
265
266 /* Check if slot is occupied */
267 slot = ctrl->slot;
268 pciehp_get_adapter_status(slot, &occupied);
269 pciehp_get_power_status(slot, &poweron);
270 if (occupied && pciehp_force)
271 pciehp_enable_slot(slot);
272 /* If empty slot's power status is on, turn power off */
273 if (!occupied && poweron && POWER_CTRL(ctrl))
274 pciehp_power_off_slot(slot);
275
276 return 0;
277
278err_out_free_ctrl_slot:
279 cleanup_slot(ctrl);
280err_out_release_ctlr:
281 pciehp_release_ctrl(ctrl);
282err_out_none:
283 return -ENODEV;
284}
285
286static void pciehp_remove(struct pcie_device *dev)
287{
288 struct controller *ctrl = get_service_data(dev);
289
290 cleanup_slot(ctrl);
291 pciehp_release_ctrl(ctrl);
292}
293
294#ifdef CONFIG_PM
295static int pciehp_suspend (struct pcie_device *dev)
296{
297 dev_info(&dev->device, "%s ENTRY\n", __func__);
298 return 0;
299}
300
301static int pciehp_resume (struct pcie_device *dev)
302{
303 dev_info(&dev->device, "%s ENTRY\n", __func__);
304 if (pciehp_force) {
305 struct controller *ctrl = get_service_data(dev);
306 struct slot *slot;
307 u8 status;
308
309 /* reinitialize the chipset's event detection logic */
310 pcie_enable_notification(ctrl);
311
312 slot = ctrl->slot;
313
314 /* Check if slot is occupied */
315 pciehp_get_adapter_status(slot, &status);
316 if (status)
317 pciehp_enable_slot(slot);
318 else
319 pciehp_disable_slot(slot);
320 }
321 return 0;
322}
323#endif /* PM */
324
325static struct pcie_port_service_driver hpdriver_portdrv = {
326 .name = PCIE_MODULE_NAME,
327 .port_type = PCIE_ANY_PORT,
328 .service = PCIE_PORT_SERVICE_HP,
329
330 .probe = pciehp_probe,
331 .remove = pciehp_remove,
332
333#ifdef CONFIG_PM
334 .suspend = pciehp_suspend,
335 .resume = pciehp_resume,
336#endif /* PM */
337};
338
339static int __init pcied_init(void)
340{
341 int retval = 0;
342
343 pciehp_wq = alloc_workqueue("pciehp", 0, 0);
344 if (!pciehp_wq)
345 return -ENOMEM;
346
347 pciehp_firmware_init();
348 retval = pcie_port_service_register(&hpdriver_portdrv);
349 dbg("pcie_port_service_register = %d\n", retval);
350 info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
351 if (retval) {
352 destroy_workqueue(pciehp_wq);
353 dbg("Failure to register service\n");
354 }
355 return retval;
356}
357
358static void __exit pcied_cleanup(void)
359{
360 dbg("unload_pciehpd()\n");
361 pcie_port_service_unregister(&hpdriver_portdrv);
362 destroy_workqueue(pciehp_wq);
363 info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
364}
365
366module_init(pcied_init);
367module_exit(pcied_cleanup);
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * PCI Express Hot Plug Controller Driver
4 *
5 * Copyright (C) 1995,2001 Compaq Computer Corporation
6 * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
7 * Copyright (C) 2001 IBM Corp.
8 * Copyright (C) 2003-2004 Intel Corporation
9 *
10 * All rights reserved.
11 *
12 * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
13 *
14 * Authors:
15 * Dan Zink <dan.zink@compaq.com>
16 * Greg Kroah-Hartman <greg@kroah.com>
17 * Dely Sy <dely.l.sy@intel.com>"
18 */
19
20#define pr_fmt(fmt) "pciehp: " fmt
21#define dev_fmt pr_fmt
22
23#include <linux/bitfield.h>
24#include <linux/moduleparam.h>
25#include <linux/kernel.h>
26#include <linux/slab.h>
27#include <linux/types.h>
28#include <linux/pci.h>
29#include "pciehp.h"
30
31#include "../pci.h"
32
33/* Global variables */
34bool pciehp_poll_mode;
35int pciehp_poll_time;
36
37/*
38 * not really modular, but the easiest way to keep compat with existing
39 * bootargs behaviour is to continue using module_param here.
40 */
41module_param(pciehp_poll_mode, bool, 0644);
42module_param(pciehp_poll_time, int, 0644);
43MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
44MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
45
46static int set_attention_status(struct hotplug_slot *slot, u8 value);
47static int get_power_status(struct hotplug_slot *slot, u8 *value);
48static int get_latch_status(struct hotplug_slot *slot, u8 *value);
49static int get_adapter_status(struct hotplug_slot *slot, u8 *value);
50
51static int init_slot(struct controller *ctrl)
52{
53 struct hotplug_slot_ops *ops;
54 char name[SLOT_NAME_SIZE];
55 int retval;
56
57 /* Setup hotplug slot ops */
58 ops = kzalloc(sizeof(*ops), GFP_KERNEL);
59 if (!ops)
60 return -ENOMEM;
61
62 ops->enable_slot = pciehp_sysfs_enable_slot;
63 ops->disable_slot = pciehp_sysfs_disable_slot;
64 ops->get_power_status = get_power_status;
65 ops->get_adapter_status = get_adapter_status;
66 ops->reset_slot = pciehp_reset_slot;
67 if (MRL_SENS(ctrl))
68 ops->get_latch_status = get_latch_status;
69 if (ATTN_LED(ctrl)) {
70 ops->get_attention_status = pciehp_get_attention_status;
71 ops->set_attention_status = set_attention_status;
72 } else if (ctrl->pcie->port->hotplug_user_indicators) {
73 ops->get_attention_status = pciehp_get_raw_indicator_status;
74 ops->set_attention_status = pciehp_set_raw_indicator_status;
75 }
76
77 /* register this slot with the hotplug pci core */
78 ctrl->hotplug_slot.ops = ops;
79 snprintf(name, SLOT_NAME_SIZE, "%u", PSN(ctrl));
80
81 retval = pci_hp_initialize(&ctrl->hotplug_slot,
82 ctrl->pcie->port->subordinate, 0, name);
83 if (retval) {
84 ctrl_err(ctrl, "pci_hp_initialize failed: error %d\n", retval);
85 kfree(ops);
86 }
87 return retval;
88}
89
90static void cleanup_slot(struct controller *ctrl)
91{
92 struct hotplug_slot *hotplug_slot = &ctrl->hotplug_slot;
93
94 pci_hp_destroy(hotplug_slot);
95 kfree(hotplug_slot->ops);
96}
97
98/*
99 * set_attention_status - Turns the Attention Indicator on, off or blinking
100 */
101static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
102{
103 struct controller *ctrl = to_ctrl(hotplug_slot);
104 struct pci_dev *pdev = ctrl->pcie->port;
105
106 if (status)
107 status = FIELD_PREP(PCI_EXP_SLTCTL_AIC, status);
108 else
109 status = PCI_EXP_SLTCTL_ATTN_IND_OFF;
110
111 pci_config_pm_runtime_get(pdev);
112 pciehp_set_indicators(ctrl, INDICATOR_NOOP, status);
113 pci_config_pm_runtime_put(pdev);
114 return 0;
115}
116
117static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
118{
119 struct controller *ctrl = to_ctrl(hotplug_slot);
120 struct pci_dev *pdev = ctrl->pcie->port;
121
122 pci_config_pm_runtime_get(pdev);
123 pciehp_get_power_status(ctrl, value);
124 pci_config_pm_runtime_put(pdev);
125 return 0;
126}
127
128static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
129{
130 struct controller *ctrl = to_ctrl(hotplug_slot);
131 struct pci_dev *pdev = ctrl->pcie->port;
132
133 pci_config_pm_runtime_get(pdev);
134 pciehp_get_latch_status(ctrl, value);
135 pci_config_pm_runtime_put(pdev);
136 return 0;
137}
138
139static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
140{
141 struct controller *ctrl = to_ctrl(hotplug_slot);
142 struct pci_dev *pdev = ctrl->pcie->port;
143 int ret;
144
145 pci_config_pm_runtime_get(pdev);
146 ret = pciehp_card_present_or_link_active(ctrl);
147 pci_config_pm_runtime_put(pdev);
148 if (ret < 0)
149 return ret;
150
151 *value = ret;
152 return 0;
153}
154
155/**
156 * pciehp_check_presence() - synthesize event if presence has changed
157 * @ctrl: controller to check
158 *
159 * On probe and resume, an explicit presence check is necessary to bring up an
160 * occupied slot or bring down an unoccupied slot. This can't be triggered by
161 * events in the Slot Status register, they may be stale and are therefore
162 * cleared. Secondly, sending an interrupt for "events that occur while
163 * interrupt generation is disabled [when] interrupt generation is subsequently
164 * enabled" is optional per PCIe r4.0, sec 6.7.3.4.
165 */
166static void pciehp_check_presence(struct controller *ctrl)
167{
168 int occupied;
169
170 down_read_nested(&ctrl->reset_lock, ctrl->depth);
171 mutex_lock(&ctrl->state_lock);
172
173 occupied = pciehp_card_present_or_link_active(ctrl);
174 if ((occupied > 0 && (ctrl->state == OFF_STATE ||
175 ctrl->state == BLINKINGON_STATE)) ||
176 (!occupied && (ctrl->state == ON_STATE ||
177 ctrl->state == BLINKINGOFF_STATE)))
178 pciehp_request(ctrl, PCI_EXP_SLTSTA_PDC);
179
180 mutex_unlock(&ctrl->state_lock);
181 up_read(&ctrl->reset_lock);
182}
183
184static int pciehp_probe(struct pcie_device *dev)
185{
186 int rc;
187 struct controller *ctrl;
188
189 /* If this is not a "hotplug" service, we have no business here. */
190 if (dev->service != PCIE_PORT_SERVICE_HP)
191 return -ENODEV;
192
193 if (!dev->port->subordinate) {
194 /* Can happen if we run out of bus numbers during probe */
195 pci_err(dev->port,
196 "Hotplug bridge without secondary bus, ignoring\n");
197 return -ENODEV;
198 }
199
200 ctrl = pcie_init(dev);
201 if (!ctrl) {
202 pci_err(dev->port, "Controller initialization failed\n");
203 return -ENODEV;
204 }
205 set_service_data(dev, ctrl);
206
207 /* Setup the slot information structures */
208 rc = init_slot(ctrl);
209 if (rc) {
210 if (rc == -EBUSY)
211 ctrl_warn(ctrl, "Slot already registered by another hotplug driver\n");
212 else
213 ctrl_err(ctrl, "Slot initialization failed (%d)\n", rc);
214 goto err_out_release_ctlr;
215 }
216
217 /* Enable events after we have setup the data structures */
218 rc = pcie_init_notification(ctrl);
219 if (rc) {
220 ctrl_err(ctrl, "Notification initialization failed (%d)\n", rc);
221 goto err_out_free_ctrl_slot;
222 }
223
224 /* Publish to user space */
225 rc = pci_hp_add(&ctrl->hotplug_slot);
226 if (rc) {
227 ctrl_err(ctrl, "Publication to user space failed (%d)\n", rc);
228 goto err_out_shutdown_notification;
229 }
230
231 pciehp_check_presence(ctrl);
232
233 return 0;
234
235err_out_shutdown_notification:
236 pcie_shutdown_notification(ctrl);
237err_out_free_ctrl_slot:
238 cleanup_slot(ctrl);
239err_out_release_ctlr:
240 pciehp_release_ctrl(ctrl);
241 return -ENODEV;
242}
243
244static void pciehp_remove(struct pcie_device *dev)
245{
246 struct controller *ctrl = get_service_data(dev);
247
248 pci_hp_del(&ctrl->hotplug_slot);
249 pcie_shutdown_notification(ctrl);
250 cleanup_slot(ctrl);
251 pciehp_release_ctrl(ctrl);
252}
253
254#ifdef CONFIG_PM
255static bool pme_is_native(struct pcie_device *dev)
256{
257 const struct pci_host_bridge *host;
258
259 host = pci_find_host_bridge(dev->port->bus);
260 return pcie_ports_native || host->native_pme;
261}
262
263static void pciehp_disable_interrupt(struct pcie_device *dev)
264{
265 /*
266 * Disable hotplug interrupt so that it does not trigger
267 * immediately when the downstream link goes down.
268 */
269 if (pme_is_native(dev))
270 pcie_disable_interrupt(get_service_data(dev));
271}
272
273#ifdef CONFIG_PM_SLEEP
274static int pciehp_suspend(struct pcie_device *dev)
275{
276 /*
277 * If the port is already runtime suspended we can keep it that
278 * way.
279 */
280 if (dev_pm_skip_suspend(&dev->port->dev))
281 return 0;
282
283 pciehp_disable_interrupt(dev);
284 return 0;
285}
286
287static int pciehp_resume_noirq(struct pcie_device *dev)
288{
289 struct controller *ctrl = get_service_data(dev);
290
291 /* pci_restore_state() just wrote to the Slot Control register */
292 ctrl->cmd_started = jiffies;
293 ctrl->cmd_busy = true;
294
295 /* clear spurious events from rediscovery of inserted card */
296 if (ctrl->state == ON_STATE || ctrl->state == BLINKINGOFF_STATE)
297 pcie_clear_hotplug_events(ctrl);
298
299 return 0;
300}
301#endif
302
303static int pciehp_resume(struct pcie_device *dev)
304{
305 struct controller *ctrl = get_service_data(dev);
306
307 if (pme_is_native(dev))
308 pcie_enable_interrupt(ctrl);
309
310 pciehp_check_presence(ctrl);
311
312 return 0;
313}
314
315static int pciehp_runtime_suspend(struct pcie_device *dev)
316{
317 pciehp_disable_interrupt(dev);
318 return 0;
319}
320
321static int pciehp_runtime_resume(struct pcie_device *dev)
322{
323 struct controller *ctrl = get_service_data(dev);
324
325 /* pci_restore_state() just wrote to the Slot Control register */
326 ctrl->cmd_started = jiffies;
327 ctrl->cmd_busy = true;
328
329 /* clear spurious events from rediscovery of inserted card */
330 if ((ctrl->state == ON_STATE || ctrl->state == BLINKINGOFF_STATE) &&
331 pme_is_native(dev))
332 pcie_clear_hotplug_events(ctrl);
333
334 return pciehp_resume(dev);
335}
336#endif /* PM */
337
338static struct pcie_port_service_driver hpdriver_portdrv = {
339 .name = "pciehp",
340 .port_type = PCIE_ANY_PORT,
341 .service = PCIE_PORT_SERVICE_HP,
342
343 .probe = pciehp_probe,
344 .remove = pciehp_remove,
345
346#ifdef CONFIG_PM
347#ifdef CONFIG_PM_SLEEP
348 .suspend = pciehp_suspend,
349 .resume_noirq = pciehp_resume_noirq,
350 .resume = pciehp_resume,
351#endif
352 .runtime_suspend = pciehp_runtime_suspend,
353 .runtime_resume = pciehp_runtime_resume,
354#endif /* PM */
355
356 .slot_reset = pciehp_slot_reset,
357};
358
359int __init pcie_hp_init(void)
360{
361 int retval = 0;
362
363 retval = pcie_port_service_register(&hpdriver_portdrv);
364 pr_debug("pcie_port_service_register = %d\n", retval);
365 if (retval)
366 pr_debug("Failure to register service\n");
367
368 return retval;
369}