* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
- * Send feedback to <greg@kroah.com>, <dely.l.sy@intel.com>
+ * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
*
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
-#include <linux/proc_fs.h>
-#include <linux/miscdevice.h>
-#include <linux/slab.h>
-#include <linux/workqueue.h>
#include <linux/pci.h>
-#include <linux/init.h>
-#include <asm/uaccess.h>
#include "pciehp.h"
-#include "pciehprm.h"
+#include <linux/interrupt.h>
/* Global variables */
int pciehp_debug;
int pciehp_poll_mode;
int pciehp_poll_time;
+int pciehp_force;
struct controller *pciehp_ctrl_list;
-struct pci_func *pciehp_slot_list[256];
#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>"
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
-module_param(pciehp_debug, bool, 644);
-module_param(pciehp_poll_mode, bool, 644);
-module_param(pciehp_poll_time, int, 644);
+module_param(pciehp_debug, bool, 0644);
+module_param(pciehp_poll_mode, bool, 0644);
+module_param(pciehp_poll_time, int, 0644);
+module_param(pciehp_force, bool, 0644);
MODULE_PARM_DESC(pciehp_debug, "Debugging mode enabled or not");
MODULE_PARM_DESC(pciehp_poll_mode, "Using polling mechanism for hot-plug events or not");
MODULE_PARM_DESC(pciehp_poll_time, "Polling mechanism frequency, in seconds");
+MODULE_PARM_DESC(pciehp_force, "Force pciehp, even if _OSC and OSHP are missing");
#define PCIE_MODULE_NAME "pciehp"
static int get_attention_status (struct hotplug_slot *slot, u8 *value);
static int get_latch_status (struct hotplug_slot *slot, u8 *value);
static int get_adapter_status (struct hotplug_slot *slot, u8 *value);
+static int get_address (struct hotplug_slot *slot, u32 *value);
static int get_max_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
static int get_cur_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
.get_attention_status = get_attention_status,
.get_latch_status = get_latch_status,
.get_adapter_status = get_adapter_status,
+ .get_address = get_address,
.get_max_bus_speed = get_max_bus_speed,
.get_cur_bus_speed = get_cur_bus_speed,
};
+/**
+ * release_slot - free up the memory used by a slot
+ * @hotplug_slot: slot to free
+ */
+static void release_slot(struct hotplug_slot *hotplug_slot)
+{
+ struct slot *slot = hotplug_slot->private;
+
+ 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 int init_slots(struct controller *ctrl)
{
- struct slot *new_slot;
+ struct slot *slot;
+ struct hpc_ops *hpc_ops;
+ struct hotplug_slot *hotplug_slot;
+ struct hotplug_slot_info *hotplug_slot_info;
u8 number_of_slots;
u8 slot_device;
u32 slot_number;
int result = -ENOMEM;
- dbg("%s\n",__FUNCTION__);
-
number_of_slots = ctrl->num_slots;
slot_device = ctrl->slot_device_offset;
slot_number = ctrl->first_slot;
while (number_of_slots) {
- new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
- if (!new_slot)
+ slot = kzalloc(sizeof(*slot), GFP_KERNEL);
+ if (!slot)
goto error;
- memset(new_slot, 0, sizeof(struct slot));
- new_slot->hotplug_slot =
- kmalloc(sizeof(*(new_slot->hotplug_slot)),
+ slot->hotplug_slot =
+ kzalloc(sizeof(*(slot->hotplug_slot)),
GFP_KERNEL);
- if (!new_slot->hotplug_slot)
+ if (!slot->hotplug_slot)
goto error_slot;
- memset(new_slot->hotplug_slot, 0, sizeof(struct hotplug_slot));
+ hotplug_slot = slot->hotplug_slot;
- new_slot->hotplug_slot->info =
- kmalloc(sizeof(*(new_slot->hotplug_slot->info)),
+ hotplug_slot->info =
+ kzalloc(sizeof(*(hotplug_slot->info)),
GFP_KERNEL);
- if (!new_slot->hotplug_slot->info)
+ if (!hotplug_slot->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)
+ hotplug_slot_info = hotplug_slot->info;
+ hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
+ if (!hotplug_slot->name)
goto error_info;
- new_slot->ctrl = ctrl;
- new_slot->bus = ctrl->slot_bus;
- new_slot->device = slot_device;
- new_slot->hpc_ops = ctrl->hpc_ops;
+ slot->ctrl = ctrl;
+ slot->bus = ctrl->slot_bus;
+ slot->device = slot_device;
+ slot->hpc_ops = hpc_ops = ctrl->hpc_ops;
- new_slot->number = ctrl->first_slot;
- new_slot->hp_slot = slot_device - ctrl->slot_device_offset;
+ slot->number = ctrl->first_slot;
+ slot->hp_slot = slot_device - ctrl->slot_device_offset;
/* register this slot with the hotplug pci core */
- new_slot->hotplug_slot->private = new_slot;
- make_slot_name (new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
- new_slot->hotplug_slot->ops = &pciehp_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);
+ hotplug_slot->private = slot;
+ hotplug_slot->release = &release_slot;
+ make_slot_name(hotplug_slot->name, SLOT_NAME_SIZE, slot);
+ hotplug_slot->ops = &pciehp_hotplug_slot_ops;
+
+ hpc_ops->get_power_status(slot,
+ &(hotplug_slot_info->power_status));
+ hpc_ops->get_attention_status(slot,
+ &(hotplug_slot_info->attention_status));
+ hpc_ops->get_latch_status(slot,
+ &(hotplug_slot_info->latch_status));
+ hpc_ops->get_adapter_status(slot,
+ &(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);
+ result = pci_hp_register(hotplug_slot);
if (result) {
err ("pci_hp_register failed with error %d\n", result);
goto error_name;
}
- new_slot->next = ctrl->slot;
- ctrl->slot = new_slot;
+ slot->next = ctrl->slot;
+ ctrl->slot = slot;
number_of_slots--;
slot_device++;
return 0;
error_name:
- kfree(new_slot->hotplug_slot->name);
+ kfree(hotplug_slot->name);
error_info:
- kfree(new_slot->hotplug_slot->info);
+ kfree(hotplug_slot_info);
error_hpslot:
- kfree(new_slot->hotplug_slot);
+ kfree(hotplug_slot);
error_slot:
- kfree(new_slot);
+ kfree(slot);
error:
return result;
}
while (old_slot) {
next_slot = old_slot->next;
pci_hp_deregister (old_slot->hotplug_slot);
- kfree(old_slot->hotplug_slot->info);
- kfree(old_slot->hotplug_slot->name);
- kfree(old_slot->hotplug_slot);
- kfree(old_slot);
old_slot = next_slot;
}
int num_ctlr_slots; /* Not needed; PCI Express has 1 slot per port*/
int first_device_num; /* Not needed */
int physical_slot_num;
- int updown; /* Not needed */
+ u8 ctrlcap;
int rc;
- int flags; /* Not needed */
- rc = pcie_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &updown, &flags);
+ rc = pcie_get_ctlr_slot_config(ctrl, &num_ctlr_slots, &first_device_num, &physical_slot_num, &ctrlcap);
if (rc) {
err("%s: get_ctlr_slot_config fail for b:d (%x:%x)\n", __FUNCTION__, ctrl->bus, ctrl->device);
return (-1);
ctrl->num_slots = num_ctlr_slots; /* PCI Express has 1 slot per port */
ctrl->slot_device_offset = first_device_num;
ctrl->first_slot = physical_slot_num;
- ctrl->slot_num_inc = updown; /* Not needed */ /* either -1 or 1 */
+ ctrl->ctrlcap = ctrlcap;
- dbg("%s: bus(0x%x) num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) updown(%d) for b:d (%x:%x)\n",
- __FUNCTION__, ctrl->slot_bus, num_ctlr_slots, first_device_num, physical_slot_num, updown,
+ dbg("%s: bus(0x%x) num_slot(0x%x) 1st_dev(0x%x) psn(0x%x) ctrlcap(%x) for b:d (%x:%x)\n",
+ __FUNCTION__, ctrl->slot_bus, num_ctlr_slots, first_device_num, physical_slot_num, ctrlcap,
ctrl->bus, ctrl->device);
return (0);
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
hotplug_slot->info->attention_status = status;
- slot->hpc_ops->set_attention_status(slot, status);
+
+ if (ATTN_LED(slot->ctrl->ctrlcap))
+ slot->hpc_ops->set_attention_status(slot, status);
return 0;
}
return 0;
}
+static int get_address(struct hotplug_slot *hotplug_slot, u32 *value)
+{
+ struct slot *slot = hotplug_slot->private;
+ struct pci_bus *bus = slot->ctrl->pci_dev->subordinate;
+
+ dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+
+ *value = (pci_domain_nr(bus) << 16) | (slot->bus << 8) | slot->device;
+
+ return 0;
+}
+
static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
{
struct slot *slot = hotplug_slot->private;
return 0;
}
-static int pcie_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_id *id)
{
int rc;
struct controller *ctrl;
int first_device_num = 0 ; /* first PCI device number supported by this PCIE */
int num_ctlr_slots; /* number of slots supported by this HPC */
u8 value;
-
- ctrl = kmalloc(sizeof(*ctrl), GFP_KERNEL);
+ struct pci_dev *pdev;
+
+ 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));
- dbg("%s: DRV_thread pid = %d\n", __FUNCTION__, current->pid);
+ pdev = dev->port;
+ ctrl->pci_dev = pdev;
- rc = pcie_init(ctrl, pdev,
- (php_intr_callback_t) pciehp_handle_attention_button,
- (php_intr_callback_t) pciehp_handle_switch_change,
- (php_intr_callback_t) pciehp_handle_presence_change,
- (php_intr_callback_t) pciehp_handle_power_fault);
+ rc = pcie_init(ctrl, dev);
if (rc) {
dbg("%s: controller initialization failed\n", PCIE_MODULE_NAME);
goto err_out_free_ctrl;
}
- ctrl->pci_dev = pdev;
-
pci_set_drvdata(pdev, ctrl);
ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL);
rc = -ENOMEM;
goto err_out_unmap_mmio_region;
}
- dbg("%s: ctrl->pci_bus %p\n", __FUNCTION__, ctrl->pci_bus);
memcpy (ctrl->pci_bus, pdev->bus, sizeof (*ctrl->pci_bus));
ctrl->bus = pdev->bus->number; /* ctrl bus */
ctrl->slot_bus = pdev->subordinate->number; /* bus controlled by this HPC */
first_device_num = ctrl->slot_device_offset;
num_ctlr_slots = ctrl->num_slots;
- /* Store PCI Config Space for all devices on this bus */
- dbg("%s: Before calling pciehp_save_config, ctrl->bus %x,ctrl->slot_bus %x\n",
- __FUNCTION__,ctrl->bus, ctrl->slot_bus);
- rc = pciehp_save_config(ctrl, ctrl->slot_bus, num_ctlr_slots, first_device_num);
- if (rc) {
- err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc);
- goto err_out_free_ctrl_bus;
- }
-
- /* Get IO, memory, and IRQ resources for new devices */
- rc = pciehprm_find_available_resources(ctrl);
- ctrl->add_support = !rc;
-
- if (rc) {
- dbg("pciehprm_find_available_resources = %#x\n", rc);
- err("unable to locate PCI configuration resources for hot plug add.\n");
- goto err_out_free_ctrl_bus;
- }
-
/* Setup the slot information structures */
rc = init_slots(ctrl);
if (rc) {
}
t_slot = pciehp_find_slot(ctrl, first_device_num);
- dbg("%s: t_slot %p\n", __FUNCTION__, t_slot);
/* Finish setting up the hot plug ctrl device */
ctrl->next_event = 0;
}
/* Wait for exclusive access to hardware */
- down(&ctrl->crit_sect);
+ mutex_lock(&ctrl->ctrl_lock);
t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */
- dbg("%s: adpater value %x\n", __FUNCTION__, value);
- if (!value) {
+
+ if ((POWER_CTRL(ctrl->ctrlcap)) && !value) {
rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/
if (rc) {
/* Done with exclusive hardware access */
- up(&ctrl->crit_sect);
+ mutex_unlock(&ctrl->ctrl_lock);
goto err_out_free_ctrl_slot;
} else
/* Wait for the command to complete */
}
/* Done with exclusive hardware access */
- up(&ctrl->crit_sect);
+ mutex_unlock(&ctrl->ctrl_lock);
return 0;
static int pcie_start_thread(void)
{
- int loop;
int retval = 0;
dbg("Initialize + Start the notification/polling mechanism \n");
return retval;
}
- dbg("Initialize slot lists\n");
- /* One slot list for each bus in the system */
- for (loop = 0; loop < 256; loop++) {
- pciehp_slot_list[loop] = NULL;
- }
-
return retval;
}
-static inline void __exit
-free_pciehp_res(struct pci_resource *res)
-{
- struct pci_resource *tres;
-
- while (res) {
- tres = res;
- res = res->next;
- kfree(tres);
- }
-}
-
static void __exit unload_pciehpd(void)
{
- struct pci_func *next;
- struct pci_func *TempSlot;
- int loop;
struct controller *ctrl;
struct controller *tctrl;
while (ctrl) {
cleanup_slots(ctrl);
- free_pciehp_res(ctrl->io_head);
- free_pciehp_res(ctrl->mem_head);
- free_pciehp_res(ctrl->p_mem_head);
- free_pciehp_res(ctrl->bus_head);
-
kfree (ctrl->pci_bus);
ctrl->hpc_ops->release_ctlr(ctrl);
kfree(tctrl);
}
- for (loop = 0; loop < 256; loop++) {
- next = pciehp_slot_list[loop];
- while (next != NULL) {
- free_pciehp_res(next->io_head);
- free_pciehp_res(next->mem_head);
- free_pciehp_res(next->p_mem_head);
- free_pciehp_res(next->bus_head);
-
- TempSlot = next;
- next = next->next;
- kfree(TempSlot);
- }
- }
-
/* Stop the notification mechanism */
pciehp_event_stop_thread();
}
+static void pciehp_remove (struct pcie_device *device)
+{
+ /* XXX - Needs to be adapted to device driver model */
+}
-static struct pci_device_id pcied_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,
- },
-
- { /* end: all zeroes */ }
-};
-
-MODULE_DEVICE_TABLE(pci, pcied_pci_tbl);
-
+#ifdef CONFIG_PM
+static int pciehp_suspend (struct pcie_device *dev, pm_message_t state)
+{
+ printk("%s ENTRY\n", __FUNCTION__);
+ return 0;
+}
+static int pciehp_resume (struct pcie_device *dev)
+{
+ printk("%s ENTRY\n", __FUNCTION__);
+ return 0;
+}
+#endif
-static struct pci_driver pcie_driver = {
- .name = PCIE_MODULE_NAME,
- .id_table = pcied_pci_tbl,
- .probe = pcie_probe,
- /* remove: pcie_remove_one, */
+static struct pcie_port_service_id port_pci_ids[] = { {
+ .vendor = PCI_ANY_ID,
+ .device = PCI_ANY_ID,
+ .port_type = PCIE_ANY_PORT,
+ .service_type = PCIE_PORT_SERVICE_HP,
+ .driver_data = 0,
+ }, { /* end: all zeroes */ }
};
+static const char device_name[] = "hpdriver";
+static struct pcie_port_service_driver hpdriver_portdrv = {
+ .name = (char *)device_name,
+ .id_table = &port_pci_ids[0],
+ .probe = pciehp_probe,
+ .remove = pciehp_remove,
+
+#ifdef CONFIG_PM
+ .suspend = pciehp_suspend,
+ .resume = pciehp_resume,
+#endif /* PM */
+};
static int __init pcied_init(void)
{
if (retval)
goto error_hpc_init;
- retval = pciehprm_init(PCI);
- if (!retval) {
- retval = pci_module_init(&pcie_driver);
- dbg("pci_module_init = %d\n", retval);
- info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
- }
+ retval = pcie_port_service_register(&hpdriver_portdrv);
+ dbg("pcie_port_service_register = %d\n", retval);
+ info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
+ if (retval)
+ dbg("%s: Failure to register service\n", __FUNCTION__);
error_hpc_init:
if (retval) {
- pciehprm_cleanup();
pciehp_event_stop_thread();
- } else
- pciehprm_print_pirt();
+ };
return retval;
}
dbg("unload_pciehpd()\n");
unload_pciehpd();
- pciehprm_cleanup();
-
- dbg("pci_unregister_driver\n");
- pci_unregister_driver(&pcie_driver);
+ pcie_port_service_unregister(&hpdriver_portdrv);
info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
}