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path: root/drivers/pci/hotplug/shpchp_core.c
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Diffstat (limited to 'drivers/pci/hotplug/shpchp_core.c')
-rw-r--r--drivers/pci/hotplug/shpchp_core.c111
1 files changed, 21 insertions, 90 deletions
diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c
index 6f7d8a29957..63628e01dd4 100644
--- a/drivers/pci/hotplug/shpchp_core.c
+++ b/drivers/pci/hotplug/shpchp_core.c
@@ -27,26 +27,18 @@
*
*/
-#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 "shpchp.h"
-#include "shpchprm.h"
/* Global variables */
int shpchp_debug;
int shpchp_poll_mode;
int shpchp_poll_time;
struct controller *shpchp_ctrl_list; /* = NULL */
-struct pci_func *shpchp_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>"
@@ -113,8 +105,6 @@ static int init_slots(struct controller *ctrl)
u32 slot_number, sun;
int result = -ENOMEM;
- dbg("%s\n",__FUNCTION__);
-
number_of_slots = ctrl->num_slots;
slot_device = ctrl->slot_device_offset;
slot_number = ctrl->first_slot;
@@ -352,6 +342,17 @@ static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_sp
return 0;
}
+static int is_shpc_capable(struct pci_dev *dev)
+{
+ if ((dev->vendor == PCI_VENDOR_ID_AMD) || (dev->device ==
+ PCI_DEVICE_ID_AMD_GOLAM_7450))
+ return 1;
+ if (pci_find_capability(dev, PCI_CAP_ID_SHPC))
+ return 1;
+
+ return 0;
+}
+
static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
int rc;
@@ -360,6 +361,9 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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);
if (!ctrl) {
err("%s : out of memory\n", __FUNCTION__);
@@ -367,19 +371,12 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
memset(ctrl, 0, sizeof(struct controller));
- dbg("DRV_thread pid = %d\n", current->pid);
-
- rc = shpc_init(ctrl, pdev,
- (php_intr_callback_t) shpchp_handle_attention_button,
- (php_intr_callback_t) shpchp_handle_switch_change,
- (php_intr_callback_t) shpchp_handle_presence_change,
- (php_intr_callback_t) shpchp_handle_power_fault);
+ rc = shpc_init(ctrl, pdev);
if (rc) {
dbg("%s: controller initialization failed\n", SHPC_MODULE_NAME);
goto err_out_free_ctrl;
}
- dbg("%s: controller initialization success\n", __FUNCTION__);
ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */
pci_set_drvdata(pdev, ctrl);
@@ -411,23 +408,8 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
first_device_num = ctrl->slot_device_offset;
num_ctlr_slots = ctrl->num_slots;
- /* Store PCI Config Space for all devices on this bus */
- rc = shpchp_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 = shpchprm_find_available_resources(ctrl);
- ctrl->add_support = !rc;
+ ctrl->add_support = 1;
- if (rc) {
- dbg("shpchprm_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) {
@@ -477,7 +459,6 @@ err_out_none:
static int shpc_start_thread(void)
{
- int loop;
int retval = 0;
dbg("Initialize + Start the notification/polling mechanism \n");
@@ -488,48 +469,21 @@ static int shpc_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++) {
- shpchp_slot_list[loop] = NULL;
- }
-
return retval;
}
-static inline void __exit
-free_shpchp_res(struct pci_resource *res)
-{
- struct pci_resource *tres;
-
- while (res) {
- tres = res;
- res = res->next;
- kfree(tres);
- }
-}
-
static void __exit unload_shpchpd(void)
{
- struct pci_func *next;
- struct pci_func *TempSlot;
- int loop;
struct controller *ctrl;
struct controller *tctrl;
ctrl = shpchp_ctrl_list;
while (ctrl) {
+ shpchp_remove_ctrl_files(ctrl);
cleanup_slots(ctrl);
- free_shpchp_res(ctrl->io_head);
- free_shpchp_res(ctrl->mem_head);
- free_shpchp_res(ctrl->p_mem_head);
- free_shpchp_res(ctrl->bus_head);
-
kfree (ctrl->pci_bus);
-
- dbg("%s: calling release_ctlr\n", __FUNCTION__);
ctrl->hpc_ops->release_ctlr(ctrl);
tctrl = ctrl;
@@ -538,20 +492,6 @@ static void __exit unload_shpchpd(void)
kfree(tctrl);
}
- for (loop = 0; loop < 256; loop++) {
- next = shpchp_slot_list[loop];
- while (next != NULL) {
- free_shpchp_res(next->io_head);
- free_shpchp_res(next->mem_head);
- free_shpchp_res(next->p_mem_head);
- free_shpchp_res(next->bus_head);
-
- TempSlot = next;
- next = next->next;
- kfree(TempSlot);
- }
- }
-
/* Stop the notification mechanism */
shpchp_event_stop_thread();
@@ -596,20 +536,14 @@ static int __init shpcd_init(void)
if (retval)
goto error_hpc_init;
- retval = shpchprm_init(PCI);
- if (!retval) {
- retval = pci_register_driver(&shpc_driver);
- dbg("%s: pci_register_driver = %d\n", __FUNCTION__, retval);
- info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
- }
+ 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) {
- shpchprm_cleanup();
shpchp_event_stop_thread();
- } else
- shpchprm_print_pirt();
-
+ }
return retval;
}
@@ -618,9 +552,6 @@ static void __exit shpcd_cleanup(void)
dbg("unload_shpchpd()\n");
unload_shpchpd();
- shpchprm_cleanup();
-
- dbg("pci_unregister_driver\n");
pci_unregister_driver(&shpc_driver);
info(DRIVER_DESC " version: " DRIVER_VERSION " unloaded\n");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-22 05:50:13 +0000