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path: root/drivers/pci/hotplug/pcihp_skeleton.c
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Diffstat (limited to 'drivers/pci/hotplug/pcihp_skeleton.c')
-rw-r--r--drivers/pci/hotplug/pcihp_skeleton.c348
1 files changed, 0 insertions, 348 deletions
diff --git a/drivers/pci/hotplug/pcihp_skeleton.c b/drivers/pci/hotplug/pcihp_skeleton.c
deleted file mode 100644
index c19694a04d2c..000000000000
--- a/drivers/pci/hotplug/pcihp_skeleton.c
+++ /dev/null
@@ -1,348 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * PCI Hot Plug Controller Skeleton Driver - 0.3
- *
- * Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
- * Copyright (C) 2001,2003 IBM Corp.
- *
- * All rights reserved.
- *
- * This driver is to be used as a skeleton driver to show how to interface
- * with the pci hotplug core easily.
- *
- * Send feedback to <greg@kroah.com>
- *
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
-#include <linux/pci_hotplug.h>
-#include <linux/init.h>
-
-#define SLOT_NAME_SIZE 10
-struct slot {
- u8 number;
- struct hotplug_slot *hotplug_slot;
- struct list_head slot_list;
- char name[SLOT_NAME_SIZE];
-};
-
-static LIST_HEAD(slot_list);
-
-#define MY_NAME "pcihp_skeleton"
-
-#define dbg(format, arg...) \
- do { \
- if (debug) \
- printk(KERN_DEBUG "%s: " format "\n", \
- MY_NAME, ## arg); \
- } while (0)
-#define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME, ## arg)
-#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME, ## arg)
-#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME, ## arg)
-
-/* local variables */
-static bool debug;
-static int num_slots;
-
-#define DRIVER_VERSION "0.3"
-#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
-#define DRIVER_DESC "Hot Plug PCI Controller Skeleton Driver"
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
-module_param(debug, bool, 0644);
-MODULE_PARM_DESC(debug, "Debugging mode enabled or not");
-
-static int enable_slot(struct hotplug_slot *slot);
-static int disable_slot(struct hotplug_slot *slot);
-static int set_attention_status(struct hotplug_slot *slot, u8 value);
-static int hardware_test(struct hotplug_slot *slot, u32 value);
-static int get_power_status(struct hotplug_slot *slot, u8 *value);
-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 struct hotplug_slot_ops skel_hotplug_slot_ops = {
- .enable_slot = enable_slot,
- .disable_slot = disable_slot,
- .set_attention_status = set_attention_status,
- .hardware_test = hardware_test,
- .get_power_status = get_power_status,
- .get_attention_status = get_attention_status,
- .get_latch_status = get_latch_status,
- .get_adapter_status = get_adapter_status,
-};
-
-static int enable_slot(struct hotplug_slot *hotplug_slot)
-{
- struct slot *slot = hotplug_slot->private;
- int retval = 0;
-
- dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
-
- /*
- * Fill in code here to enable the specified slot
- */
-
- return retval;
-}
-
-static int disable_slot(struct hotplug_slot *hotplug_slot)
-{
- struct slot *slot = hotplug_slot->private;
- int retval = 0;
-
- dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
-
- /*
- * Fill in code here to disable the specified slot
- */
-
- return retval;
-}
-
-static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
-{
- struct slot *slot = hotplug_slot->private;
- int retval = 0;
-
- dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
-
- switch (status) {
- case 0:
- /*
- * Fill in code here to turn light off
- */
- break;
-
- case 1:
- default:
- /*
- * Fill in code here to turn light on
- */
- break;
- }
-
- return retval;
-}
-
-static int hardware_test(struct hotplug_slot *hotplug_slot, u32 value)
-{
- struct slot *slot = hotplug_slot->private;
- int retval = 0;
-
- dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
-
- switch (value) {
- case 0:
- /* Specify a test here */
- break;
- case 1:
- /* Specify another test here */
- break;
- }
-
- return retval;
-}
-
-static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
-{
- struct slot *slot = hotplug_slot->private;
- int retval = 0;
-
- dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
-
- /*
- * Fill in logic to get the current power status of the specific
- * slot and store it in the *value location.
- */
-
- return retval;
-}
-
-static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
-{
- struct slot *slot = hotplug_slot->private;
- int retval = 0;
-
- dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
-
- /*
- * Fill in logic to get the current attention status of the specific
- * slot and store it in the *value location.
- */
-
- return retval;
-}
-
-static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
-{
- struct slot *slot = hotplug_slot->private;
- int retval = 0;
-
- dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
-
- /*
- * Fill in logic to get the current latch status of the specific
- * slot and store it in the *value location.
- */
-
- return retval;
-}
-
-static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
-{
- struct slot *slot = hotplug_slot->private;
- int retval = 0;
-
- dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
-
- /*
- * Fill in logic to get the current adapter status of the specific
- * slot and store it in the *value location.
- */
-
- return retval;
-}
-
-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)
-{
- /*
- * Stupid way to make a filename out of the slot name.
- * replace this if your hardware provides a better way to name slots.
- */
- snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%d", slot->number);
-}
-
-/**
- * init_slots - initialize 'struct slot' structures for each slot
- *
- */
-static int __init init_slots(void)
-{
- struct slot *slot;
- struct hotplug_slot *hotplug_slot;
- struct hotplug_slot_info *info;
- int retval;
- int i;
-
- /*
- * Create a structure for each slot, and register that slot
- * with the pci_hotplug subsystem.
- */
- for (i = 0; i < num_slots; ++i) {
- slot = kzalloc(sizeof(*slot), GFP_KERNEL);
- if (!slot) {
- retval = -ENOMEM;
- goto error;
- }
-
- hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
- if (!hotplug_slot) {
- retval = -ENOMEM;
- goto error_slot;
- }
- slot->hotplug_slot = hotplug_slot;
-
- info = kzalloc(sizeof(*info), GFP_KERNEL);
- if (!info) {
- retval = -ENOMEM;
- goto error_hpslot;
- }
- hotplug_slot->info = info;
-
- slot->number = i;
-
- hotplug_slot->name = slot->name;
- hotplug_slot->private = slot;
- hotplug_slot->release = &release_slot;
- make_slot_name(slot);
- hotplug_slot->ops = &skel_hotplug_slot_ops;
-
- /*
- * Initialize the slot info structure with some known
- * good values.
- */
- 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 slot %d\n", i);
- retval = pci_hp_register(slot->hotplug_slot);
- if (retval) {
- err("pci_hp_register failed with error %d\n", retval);
- goto error_info;
- }
-
- /* add slot to our internal list */
- list_add(&slot->slot_list, &slot_list);
- }
-
- return 0;
-error_info:
- kfree(info);
-error_hpslot:
- kfree(hotplug_slot);
-error_slot:
- kfree(slot);
-error:
- return retval;
-}
-
-static void __exit cleanup_slots(void)
-{
- struct slot *slot, *next;
-
- /*
- * Unregister all of our slots with the pci_hotplug subsystem.
- * Memory will be freed in release_slot() callback after slot's
- * lifespan is finished.
- */
- list_for_each_entry_safe(slot, next, &slot_list, slot_list) {
- list_del(&slot->slot_list);
- pci_hp_deregister(slot->hotplug_slot);
- }
-}
-
-static int __init pcihp_skel_init(void)
-{
- int retval;
-
- info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
- /*
- * Do specific initialization stuff for your driver here
- * like initializing your controller hardware (if any) and
- * determining the number of slots you have in the system
- * right now.
- */
- num_slots = 5;
-
- return init_slots();
-}
-
-static void __exit pcihp_skel_exit(void)
-{
- /*
- * Clean everything up.
- */
- cleanup_slots();
-}
-
-module_init(pcihp_skel_init);
-module_exit(pcihp_skel_exit);
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