#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
+#include <linux/workqueue.h>
#include "shpchp.h"
/* Global variables */
int shpchp_debug;
int shpchp_poll_mode;
int shpchp_poll_time;
-struct controller *shpchp_ctrl_list; /* = NULL */
+struct workqueue_struct *shpchp_wq;
#define DRIVER_VERSION "0.4"
#define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>, Dely Sy <dely.l.sy@intel.com>"
#define SHPC_MODULE_NAME "shpchp"
-static int shpc_start_thread (void);
static int set_attention_status (struct hotplug_slot *slot, u8 value);
static int enable_slot (struct hotplug_slot *slot);
static int disable_slot (struct hotplug_slot *slot);
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
kfree(slot->hotplug_slot->info);
- kfree(slot->hotplug_slot->name);
kfree(slot->hotplug_slot);
kfree(slot);
}
+static void make_slot_name(struct slot *slot)
+{
+ snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
+ slot->bus, slot->number);
+}
+
static int init_slots(struct controller *ctrl)
{
- struct slot *new_slot;
- u8 number_of_slots;
- u8 slot_device;
- u32 slot_number, sun;
- int result = -ENOMEM;
-
- number_of_slots = ctrl->num_slots;
- slot_device = ctrl->slot_device_offset;
- slot_number = ctrl->first_slot;
-
- while (number_of_slots) {
- new_slot = (struct slot *) kmalloc(sizeof(struct slot), GFP_KERNEL);
- if (!new_slot)
+ struct slot *slot;
+ struct hotplug_slot *hotplug_slot;
+ struct hotplug_slot_info *info;
+ int retval = -ENOMEM;
+ int i;
+
+ for (i = 0; i < ctrl->num_slots; i++) {
+ slot = kzalloc(sizeof(*slot), GFP_KERNEL);
+ if (!slot)
goto error;
- memset(new_slot, 0, sizeof(struct slot));
- new_slot->hotplug_slot = kmalloc (sizeof (struct hotplug_slot), GFP_KERNEL);
- if (!new_slot->hotplug_slot)
+ hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
+ if (!hotplug_slot)
goto error_slot;
- memset(new_slot->hotplug_slot, 0, sizeof (struct hotplug_slot));
+ slot->hotplug_slot = hotplug_slot;
- new_slot->hotplug_slot->info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
- if (!new_slot->hotplug_slot->info)
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
goto error_hpslot;
- memset(new_slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info));
- new_slot->hotplug_slot->name = kmalloc (SLOT_NAME_SIZE, GFP_KERNEL);
- if (!new_slot->hotplug_slot->name)
- goto error_info;
-
- new_slot->magic = SLOT_MAGIC;
- new_slot->ctrl = ctrl;
- new_slot->bus = ctrl->slot_bus;
- new_slot->device = slot_device;
- new_slot->hpc_ops = ctrl->hpc_ops;
+ hotplug_slot->info = info;
- if (shpchprm_get_physical_slot_number(ctrl, &sun,
- new_slot->bus, new_slot->device))
- goto error_name;
+ hotplug_slot->name = slot->name;
- new_slot->number = sun;
- new_slot->hp_slot = slot_device - ctrl->slot_device_offset;
+ slot->hp_slot = i;
+ slot->ctrl = ctrl;
+ slot->bus = ctrl->pci_dev->subordinate->number;
+ slot->device = ctrl->slot_device_offset + i;
+ slot->hpc_ops = ctrl->hpc_ops;
+ slot->number = ctrl->first_slot + (ctrl->slot_num_inc * i);
+ mutex_init(&slot->lock);
+ INIT_DELAYED_WORK(&slot->work, queue_pushbutton_work);
/* register this slot with the hotplug pci core */
- new_slot->hotplug_slot->private = new_slot;
- new_slot->hotplug_slot->release = &release_slot;
- make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
- new_slot->hotplug_slot->ops = &shpchp_hotplug_slot_ops;
-
- new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status));
- new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status));
- new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status));
- new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status));
-
- dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n", new_slot->bus,
- new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset);
- result = pci_hp_register (new_slot->hotplug_slot);
- if (result) {
- err ("pci_hp_register failed with error %d\n", result);
- goto error_name;
+ hotplug_slot->private = slot;
+ hotplug_slot->release = &release_slot;
+ make_slot_name(slot);
+ hotplug_slot->ops = &shpchp_hotplug_slot_ops;
+
+ get_power_status(hotplug_slot, &info->power_status);
+ get_attention_status(hotplug_slot, &info->attention_status);
+ get_latch_status(hotplug_slot, &info->latch_status);
+ get_adapter_status(hotplug_slot, &info->adapter_status);
+
+ dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x "
+ "slot_device_offset=%x\n", slot->bus, slot->device,
+ slot->hp_slot, slot->number, ctrl->slot_device_offset);
+ retval = pci_hp_register(slot->hotplug_slot);
+ if (retval) {
+ err("pci_hp_register failed with error %d\n", retval);
+ goto error_info;
}
- new_slot->next = ctrl->slot;
- ctrl->slot = new_slot;
-
- number_of_slots--;
- slot_device++;
- slot_number += ctrl->slot_num_inc;
+ list_add(&slot->slot_list, &ctrl->slot_list);
}
return 0;
-
-error_name:
- kfree(new_slot->hotplug_slot->name);
error_info:
- kfree(new_slot->hotplug_slot->info);
+ kfree(info);
error_hpslot:
- kfree(new_slot->hotplug_slot);
+ kfree(hotplug_slot);
error_slot:
- kfree(new_slot);
+ kfree(slot);
error:
- return result;
-}
-
-static void cleanup_slots(struct controller *ctrl)
-{
- struct slot *old_slot, *next_slot;
-
- old_slot = ctrl->slot;
- ctrl->slot = NULL;
-
- while (old_slot) {
- next_slot = old_slot->next;
- pci_hp_deregister(old_slot->hotplug_slot);
- old_slot = next_slot;
- }
+ return retval;
}
-static int get_ctlr_slot_config(struct controller *ctrl)
+void cleanup_slots(struct controller *ctrl)
{
- int num_ctlr_slots;
- int first_device_num;
- int physical_slot_num;
- int updown;
- int rc;
- int flags;
-
- rc = shpc_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &updown, &flags);
- if (rc) {
- err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device);
- return -1;
+ struct list_head *tmp;
+ struct list_head *next;
+ struct slot *slot;
+
+ list_for_each_safe(tmp, next, &ctrl->slot_list) {
+ slot = list_entry(tmp, struct slot, slot_list);
+ list_del(&slot->slot_list);
+ cancel_delayed_work(&slot->work);
+ flush_scheduled_work();
+ flush_workqueue(shpchp_wq);
+ pci_hp_deregister(slot->hotplug_slot);
}
-
- ctrl->num_slots = num_ctlr_slots;
- ctrl->slot_device_offset = first_device_num;
- ctrl->first_slot = physical_slot_num;
- ctrl->slot_num_inc = updown; /* either -1 or 1 */
-
- dbg("%s: num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d (%x:%x)\n",
- __FUNCTION__, num_ctlr_slots, first_device_num, physical_slot_num, updown, ctrl->bus, ctrl->device);
-
- return 0;
}
-
/*
* set_attention_status - Turns the Amber LED for a slot on, off or blink
*/
static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
return 0;
}
-
static int enable_slot (struct hotplug_slot *hotplug_slot)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
- return shpchp_enable_slot(slot);
+ return shpchp_sysfs_enable_slot(slot);
}
-
static int disable_slot (struct hotplug_slot *hotplug_slot)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
- return shpchp_disable_slot(slot);
+ return shpchp_sysfs_disable_slot(slot);
}
static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
int retval;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
int retval;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
int retval;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
int retval;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
static int get_address (struct hotplug_slot *hotplug_slot, u32 *value)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
struct pci_bus *bus = slot->ctrl->pci_dev->subordinate;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
int retval;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
-
+
retval = slot->hpc_ops->get_max_bus_speed(slot, value);
if (retval < 0)
*value = PCI_SPEED_UNKNOWN;
static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
{
- struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct slot *slot = get_slot(hotplug_slot);
int retval;
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
-
+
retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
if (retval < 0)
*value = PCI_SPEED_UNKNOWN;
{
int rc;
struct controller *ctrl;
- struct slot *t_slot;
- int first_device_num; /* first PCI device number supported by this SHPC */
- int num_ctlr_slots; /* number of slots supported by this SHPC */
if (!is_shpc_capable(pdev))
return -ENODEV;
- ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL);
+ ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
if (!ctrl) {
err("%s : out of memory\n", __FUNCTION__);
goto err_out_none;
}
- memset(ctrl, 0, sizeof(struct controller));
+ INIT_LIST_HEAD(&ctrl->slot_list);
rc = shpc_init(ctrl, pdev);
if (rc) {
- dbg("%s: controller initialization failed\n", SHPC_MODULE_NAME);
+ dbg("%s: controller initialization failed\n",
+ SHPC_MODULE_NAME);
goto err_out_free_ctrl;
}
pci_set_drvdata(pdev, ctrl);
- ctrl->pci_bus = kmalloc (sizeof (*ctrl->pci_bus), GFP_KERNEL);
- if (!ctrl->pci_bus) {
- err("out of memory\n");
- rc = -ENOMEM;
- goto err_out_unmap_mmio_region;
- }
-
- memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus));
- ctrl->bus = pdev->bus->number;
- ctrl->slot_bus = pdev->subordinate->number;
-
- ctrl->device = PCI_SLOT(pdev->devfn);
- ctrl->function = PCI_FUNC(pdev->devfn);
- dbg("ctrl bus=0x%x, device=%x, function=%x, irq=%x\n", ctrl->bus, ctrl->device, ctrl->function, pdev->irq);
-
- /*
- * Save configuration headers for this and subordinate PCI buses
- */
-
- rc = get_ctlr_slot_config(ctrl);
- if (rc) {
- err(msg_initialization_err, rc);
- goto err_out_free_ctrl_bus;
- }
- first_device_num = ctrl->slot_device_offset;
- num_ctlr_slots = ctrl->num_slots;
-
- ctrl->add_support = 1;
-
/* Setup the slot information structures */
rc = init_slots(ctrl);
if (rc) {
- err(msg_initialization_err, 6);
- goto err_out_free_ctrl_slot;
- }
-
- /* Now hpc_functions (slot->hpc_ops->functions) are ready */
- t_slot = shpchp_find_slot(ctrl, first_device_num);
-
- /* Check for operation bus speed */
- rc = t_slot->hpc_ops->get_cur_bus_speed(t_slot, &ctrl->speed);
- dbg("%s: t_slot->hp_slot %x\n", __FUNCTION__,t_slot->hp_slot);
-
- if (rc || ctrl->speed == PCI_SPEED_UNKNOWN) {
- err(SHPC_MODULE_NAME ": Can't get current bus speed. Set to 33MHz PCI.\n");
- ctrl->speed = PCI_SPEED_33MHz;
+ err("%s: slot initialization failed\n", SHPC_MODULE_NAME);
+ goto err_out_release_ctlr;
}
- /* Finish setting up the hot plug ctrl device */
- ctrl->next_event = 0;
-
- if (!shpchp_ctrl_list) {
- shpchp_ctrl_list = ctrl;
- ctrl->next = NULL;
- } else {
- ctrl->next = shpchp_ctrl_list;
- shpchp_ctrl_list = ctrl;
- }
-
- shpchp_create_ctrl_files(ctrl);
+ rc = shpchp_create_ctrl_files(ctrl);
+ if (rc)
+ goto err_cleanup_slots;
return 0;
-err_out_free_ctrl_slot:
+err_cleanup_slots:
cleanup_slots(ctrl);
-err_out_free_ctrl_bus:
- kfree(ctrl->pci_bus);
-err_out_unmap_mmio_region:
+err_out_release_ctlr:
ctrl->hpc_ops->release_ctlr(ctrl);
err_out_free_ctrl:
kfree(ctrl);
return -ENODEV;
}
-
-static int shpc_start_thread(void)
-{
- int retval = 0;
-
- dbg("Initialize + Start the notification/polling mechanism \n");
-
- retval = shpchp_event_start_thread();
- if (retval) {
- dbg("shpchp_event_start_thread() failed\n");
- return retval;
- }
-
- return retval;
-}
-
-static void __exit unload_shpchpd(void)
+static void shpc_remove(struct pci_dev *dev)
{
- struct controller *ctrl;
- struct controller *tctrl;
-
- ctrl = shpchp_ctrl_list;
-
- while (ctrl) {
- shpchp_remove_ctrl_files(ctrl);
- cleanup_slots(ctrl);
-
- kfree (ctrl->pci_bus);
- ctrl->hpc_ops->release_ctlr(ctrl);
-
- tctrl = ctrl;
- ctrl = ctrl->next;
-
- kfree(tctrl);
- }
-
- /* Stop the notification mechanism */
- shpchp_event_stop_thread();
+ struct controller *ctrl = pci_get_drvdata(dev);
+ shpchp_remove_ctrl_files(ctrl);
+ ctrl->hpc_ops->release_ctlr(ctrl);
+ kfree(ctrl);
}
-
static struct pci_device_id shpcd_pci_tbl[] = {
- {
- .class = ((PCI_CLASS_BRIDGE_PCI << 8) | 0x00),
- .class_mask = ~0,
- .vendor = PCI_ANY_ID,
- .device = PCI_ANY_ID,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- },
-
+ {PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0)},
{ /* end: all zeroes */ }
};
-
MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl);
-
-
static struct pci_driver shpc_driver = {
.name = SHPC_MODULE_NAME,
.id_table = shpcd_pci_tbl,
.probe = shpc_probe,
- /* remove: shpc_remove_one, */
+ .remove = shpc_remove,
};
-
-
static int __init shpcd_init(void)
{
int retval = 0;
shpchp_poll_mode = 1;
#endif
- retval = shpc_start_thread();
- if (retval)
- goto error_hpc_init;
-
retval = pci_register_driver(&shpc_driver);
dbg("%s: pci_register_driver = %d\n", __FUNCTION__, retval);
info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
-
-error_hpc_init:
- if (retval) {
- shpchp_event_stop_thread();
- }
return retval;
}
static void __exit shpcd_cleanup(void)
{
dbg("unload_shpchpd()\n");
- unload_shpchpd();
-
pci_unregister_driver(&shpc_driver);
-
info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
}
git://git.onelab.eu / linux-2.6.git / blobdiff