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path: root/drivers/pci/hotplug/pciehp_core.c
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Diffstat (limited to 'drivers/pci/hotplug/pciehp_core.c')
-rw-r--r--drivers/pci/hotplug/pciehp_core.c108
1 files changed, 11 insertions, 97 deletions
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index cafc7eadcf80..8df704860348 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -27,27 +27,20 @@
*
*/
-#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/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>"
@@ -60,9 +53,11 @@ MODULE_LICENSE("GPL");
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"
@@ -114,8 +109,6 @@ static int init_slots(struct controller *ctrl)
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;
@@ -370,7 +363,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
u8 value;
struct pci_dev *pdev;
- dbg("%s: Called by hp_drv\n", __FUNCTION__);
ctrl = kmalloc(sizeof(*ctrl), GFP_KERNEL);
if (!ctrl) {
err("%s : out of memory\n", __FUNCTION__);
@@ -378,22 +370,15 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
}
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, dev,
- (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);
@@ -402,7 +387,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
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 */
@@ -424,25 +408,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
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) {
@@ -451,7 +416,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
}
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;
@@ -468,7 +432,6 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
down(&ctrl->crit_sect);
t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */
- dbg("%s: adpater value %x\n", __FUNCTION__, value);
if ((POWER_CTRL(ctrl->ctrlcap)) && !value) {
rc = t_slot->hpc_ops->power_off_slot(t_slot); /* Power off slot if not occupied*/
@@ -501,7 +464,6 @@ err_out_none:
static int pcie_start_thread(void)
{
- int loop;
int retval = 0;
dbg("Initialize + Start the notification/polling mechanism \n");
@@ -512,32 +474,11 @@ static int pcie_start_thread(void)
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;
@@ -546,11 +487,6 @@ static void __exit unload_pciehpd(void)
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);
@@ -561,20 +497,6 @@ static void __exit unload_pciehpd(void)
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();
@@ -639,21 +561,16 @@ static int __init pcied_init(void)
if (retval)
goto error_hpc_init;
- retval = pciehprm_init(PCI);
- if (!retval) {
- 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__);
- }
+ 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;
}
@@ -663,9 +580,6 @@ static void __exit pcied_cleanup(void)
dbg("unload_pciehpd()\n");
unload_pciehpd();
- pciehprm_cleanup();
-
- dbg("pcie_port_service_unregister\n");
pcie_port_service_unregister(&hpdriver_portdrv);
info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-02 22:57:56 +0000