int pciehp_poll_mode;
int pciehp_poll_time;
int pciehp_force;
-static int pciehp_slot_with_bus;
+int pciehp_slot_with_bus;
struct workqueue_struct *pciehp_wq;
#define DRIVER_VERSION "0.4"
*/
static void release_slot(struct hotplug_slot *hotplug_slot)
{
- struct slot *slot = hotplug_slot->private;
-
dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
- kfree(slot->hotplug_slot->info);
- kfree(slot->hotplug_slot);
- kfree(slot);
-}
-
-static void make_slot_name(struct slot *slot)
-{
- if (pciehp_slot_with_bus)
- snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
- slot->bus, slot->number);
- else
- snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%d",
- slot->number);
+ kfree(hotplug_slot->info);
+ kfree(hotplug_slot);
}
static int init_slots(struct controller *ctrl)
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;
+ list_for_each_entry(slot, &ctrl->slot_list, slot_list) {
hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
if (!hotplug_slot)
- goto error_slot;
- slot->hotplug_slot = hotplug_slot;
+ goto error;
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
goto error_hpslot;
- hotplug_slot->info = info;
-
- hotplug_slot->name = slot->name;
-
- 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;
- mutex_init(&slot->lock);
- INIT_DELAYED_WORK(&slot->work, pciehp_queue_pushbutton_work);
/* register this slot with the hotplug pci core */
+ hotplug_slot->info = info;
+ hotplug_slot->name = slot->name;
hotplug_slot->private = slot;
hotplug_slot->release = &release_slot;
- make_slot_name(slot);
hotplug_slot->ops = &pciehp_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);
+ slot->hotplug_slot = hotplug_slot;
dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x "
"slot_device_offset=%x\n", slot->bus, slot->device,
goto error_info;
}
}
-
- list_add(&slot->slot_list, &ctrl->slot_list);
}
return 0;
kfree(info);
error_hpslot:
kfree(hotplug_slot);
-error_slot:
- kfree(slot);
error:
return retval;
}
static void cleanup_slots(struct controller *ctrl)
{
- 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);
+ list_for_each_entry(slot, &ctrl->slot_list, slot_list) {
if (EMI(ctrl))
sysfs_remove_file(&slot->hotplug_slot->pci_slot->kobj,
&hotplug_slot_attr_lock.attr);
- cancel_delayed_work(&slot->work);
- flush_scheduled_work();
- flush_workqueue(pciehp_wq);
pci_hp_deregister(slot->hotplug_slot);
}
}
else if (pciehp_get_hp_hw_control_from_firmware(pdev))
goto err_out_none;
- ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
+ ctrl = pcie_init(dev);
if (!ctrl) {
- err("%s : out of memory\n", __func__);
- goto err_out_none;
- }
- INIT_LIST_HEAD(&ctrl->slot_list);
-
- rc = pcie_init(ctrl, dev);
- if (rc) {
dbg("%s: controller initialization failed\n", PCIE_MODULE_NAME);
- goto err_out_free_ctrl;
+ goto err_out_none;
}
-
pci_set_drvdata(pdev, ctrl);
- dbg("%s: ctrl bus=0x%x, device=%x, function=%x, irq=%x\n",
- __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
- PCI_FUNC(pdev->devfn), pdev->irq);
-
/* Setup the slot information structures */
rc = init_slots(ctrl);
if (rc) {
cleanup_slots(ctrl);
err_out_release_ctlr:
ctrl->hpc_ops->release_ctlr(ctrl);
-err_out_free_ctrl:
- kfree(ctrl);
err_out_none:
return -ENODEV;
}
cleanup_slots(ctrl);
ctrl->hpc_ops->release_ctlr(ctrl);
- kfree(ctrl);
}
#ifdef CONFIG_PM
u8 status;
/* reinitialize the chipset's event detection logic */
- pcie_init_hardware_part2(ctrl, dev);
+ pcie_enable_notification(ctrl);
t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
__func__, ctrl->cap_base + SLOTCTRL, slot_cmd);
}
-static void hpc_release_ctlr(struct controller *ctrl)
-{
- /* Mask Hot-plug Interrupt Enable */
- if (pcie_write_cmd(ctrl, 0, HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE))
- err("%s: Cannot mask hotplug interrupt enable\n", __func__);
-
- /* Free interrupt handler or interrupt polling timer */
- pciehp_free_irq(ctrl);
-
- /*
- * If this is the last controller to be released, destroy the
- * pciehp work queue
- */
- if (atomic_dec_and_test(&pciehp_num_controllers))
- destroy_workqueue(pciehp_wq);
-}
-
static int hpc_power_on_slot(struct slot * slot)
{
struct controller *ctrl = slot->ctrl;
if (!(intr_loc & ~CMD_COMPLETED))
return IRQ_HANDLED;
- /*
- * Return without handling events if this handler routine is
- * called before controller initialization is done. This may
- * happen if hotplug event or another interrupt that shares
- * the IRQ with pciehp arrives before slot initialization is
- * done after interrupt handler is registered.
- *
- * FIXME - Need more structural fixes. We need to be ready to
- * handle the event before installing interrupt handler.
- */
p_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
- if (!p_slot || !p_slot->hpc_ops)
- return IRQ_HANDLED;
/* Check MRL Sensor Changed */
if (intr_loc & MRL_SENS_CHANGED)
return retval;
}
+static void pcie_release_ctrl(struct controller *ctrl);
static struct hpc_ops pciehp_hpc_ops = {
.power_on_slot = hpc_power_on_slot,
.power_off_slot = hpc_power_off_slot,
.green_led_off = hpc_set_green_led_off,
.green_led_blink = hpc_set_green_led_blink,
- .release_ctlr = hpc_release_ctlr,
+ .release_ctlr = pcie_release_ctrl,
.check_lnk_status = hpc_check_lnk_status,
};
-static int pcie_init_hardware_part1(struct controller *ctrl,
- struct pcie_device *dev)
-{
- /* Clear all remaining event bits in Slot Status register */
- if (pciehp_writew(ctrl, SLOTSTATUS, 0x1f)) {
- err("%s: Cannot write to SLOTSTATUS register\n", __func__);
- return -1;
- }
-
- /* Mask Hot-plug Interrupt Enable */
- if (pcie_write_cmd(ctrl, 0, HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE)) {
- err("%s: Cannot mask hotplug interrupt enable\n", __func__);
- return -1;
- }
- return 0;
-}
-
-int pcie_init_hardware_part2(struct controller *ctrl, struct pcie_device *dev)
+int pcie_enable_notification(struct controller *ctrl)
{
u16 cmd, mask;
err("%s: Cannot enable software notification\n", __func__);
return -1;
}
+ return 0;
+}
+
+static void pcie_disable_notification(struct controller *ctrl)
+{
+ u16 mask;
+ mask = PRSN_DETECT_ENABLE | ATTN_BUTTN_ENABLE | MRL_DETECT_ENABLE |
+ PWR_FAULT_DETECT_ENABLE | HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE;
+ if (pcie_write_cmd(ctrl, 0, mask))
+ warn("%s: Cannot disable software notification\n", __func__);
+}
+
+static int pcie_init_notification(struct controller *ctrl)
+{
+ if (pciehp_request_irq(ctrl))
+ return -1;
+ if (pcie_enable_notification(ctrl)) {
+ pciehp_free_irq(ctrl);
+ return -1;
+ }
+ return 0;
+}
+
+static void pcie_shutdown_notification(struct controller *ctrl)
+{
+ pcie_disable_notification(ctrl);
+ pciehp_free_irq(ctrl);
+}
+
+static void make_slot_name(struct slot *slot)
+{
+ if (pciehp_slot_with_bus)
+ snprintf(slot->name, SLOT_NAME_SIZE, "%04d_%04d",
+ slot->bus, slot->number);
+ else
+ snprintf(slot->name, SLOT_NAME_SIZE, "%d", slot->number);
+}
+static int pcie_init_slot(struct controller *ctrl)
+{
+ struct slot *slot;
+
+ slot = kzalloc(sizeof(*slot), GFP_KERNEL);
+ if (!slot)
+ return -ENOMEM;
+
+ slot->hp_slot = 0;
+ slot->ctrl = ctrl;
+ slot->bus = ctrl->pci_dev->subordinate->number;
+ slot->device = ctrl->slot_device_offset + slot->hp_slot;
+ slot->hpc_ops = ctrl->hpc_ops;
+ slot->number = ctrl->first_slot;
+ make_slot_name(slot);
+ mutex_init(&slot->lock);
+ INIT_DELAYED_WORK(&slot->work, pciehp_queue_pushbutton_work);
+ list_add(&slot->slot_list, &ctrl->slot_list);
return 0;
}
+static void pcie_cleanup_slot(struct controller *ctrl)
+{
+ struct slot *slot;
+ slot = list_first_entry(&ctrl->slot_list, struct slot, slot_list);
+ list_del(&slot->slot_list);
+ cancel_delayed_work(&slot->work);
+ flush_scheduled_work();
+ flush_workqueue(pciehp_wq);
+ kfree(slot);
+}
+
static inline void dbg_ctrl(struct controller *ctrl)
{
int i;
dbg("Slot Control : 0x%04x\n", reg16);
}
-int pcie_init(struct controller *ctrl, struct pcie_device *dev)
+struct controller *pcie_init(struct pcie_device *dev)
{
+ struct controller *ctrl;
u32 slot_cap;
struct pci_dev *pdev = dev->port;
+ ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
+ if (!ctrl) {
+ err("%s : out of memory\n", __func__);
+ goto abort;
+ }
+ INIT_LIST_HEAD(&ctrl->slot_list);
+
ctrl->pci_dev = pdev;
ctrl->cap_base = pci_find_capability(pdev, PCI_CAP_ID_EXP);
if (!ctrl->cap_base) {
!(POWER_CTRL(ctrl) | ATTN_LED(ctrl) | PWR_LED(ctrl) | EMI(ctrl)))
ctrl->no_cmd_complete = 1;
- info("HPC vendor_id %x device_id %x ss_vid %x ss_did %x\n",
- pdev->vendor, pdev->device,
- pdev->subsystem_vendor, pdev->subsystem_device);
+ /* Clear all remaining event bits in Slot Status register */
+ if (pciehp_writew(ctrl, SLOTSTATUS, 0x1f))
+ goto abort_ctrl;
- if (pcie_init_hardware_part1(ctrl, dev))
- goto abort;
-
- if (pciehp_request_irq(ctrl))
- goto abort;
+ /* Disable sotfware notification */
+ pcie_disable_notification(ctrl);
/*
* If this is the first controller to be initialized,
*/
if (atomic_add_return(1, &pciehp_num_controllers) == 1) {
pciehp_wq = create_singlethread_workqueue("pciehpd");
- if (!pciehp_wq) {
- goto abort_free_irq;
- }
+ if (!pciehp_wq)
+ goto abort_ctrl;
}
- if (pcie_init_hardware_part2(ctrl, dev))
- goto abort_free_irq;
+ info("HPC vendor_id %x device_id %x ss_vid %x ss_did %x\n",
+ pdev->vendor, pdev->device,
+ pdev->subsystem_vendor, pdev->subsystem_device);
+
+ if (pcie_init_slot(ctrl))
+ goto abort_ctrl;
- return 0;
+ if (pcie_init_notification(ctrl))
+ goto abort_slot;
-abort_free_irq:
- pciehp_free_irq(ctrl);
+ return ctrl;
+
+abort_slot:
+ pcie_cleanup_slot(ctrl);
+abort_ctrl:
+ kfree(ctrl);
abort:
- return -1;
+ return NULL;
+}
+
+void pcie_release_ctrl(struct controller *ctrl)
+{
+ pcie_shutdown_notification(ctrl);
+ pcie_cleanup_slot(ctrl);
+ /*
+ * If this is the last controller to be released, destroy the
+ * pciehp work queue
+ */
+ if (atomic_dec_and_test(&pciehp_num_controllers))
+ destroy_workqueue(pciehp_wq);
+ kfree(ctrl);
}
projects / linux-2.6-omap-h63xx.git / commitdiff