From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/drivers/pci/hotplug/s390_pci_hpc.c | 135 ++++++++++++--------------------------------
1 files changed, 37 insertions(+), 98 deletions(-)
diff --git a/kernel/drivers/pci/hotplug/s390_pci_hpc.c b/kernel/drivers/pci/hotplug/s390_pci_hpc.c
index 93b5341..93174f5 100644
--- a/kernel/drivers/pci/hotplug/s390_pci_hpc.c
+++ b/kernel/drivers/pci/hotplug/s390_pci_hpc.c
@@ -19,7 +19,6 @@
#include <asm/sclp.h>
#define SLOT_NAME_SIZE 10
-static LIST_HEAD(s390_hotplug_slot_list);
static int zpci_fn_configured(enum zpci_state state)
{
@@ -27,99 +26,90 @@
state == ZPCI_FN_STATE_ONLINE;
}
-/*
- * struct slot - slot information for each *physical* slot
- */
-struct slot {
- struct list_head slot_list;
- struct hotplug_slot *hotplug_slot;
- struct zpci_dev *zdev;
-};
-
-static inline int slot_configure(struct slot *slot)
+static inline int zdev_configure(struct zpci_dev *zdev)
{
- int ret = sclp_pci_configure(slot->zdev->fid);
+ int ret = sclp_pci_configure(zdev->fid);
- zpci_dbg(3, "conf fid:%x, rc:%d\n", slot->zdev->fid, ret);
+ zpci_dbg(3, "conf fid:%x, rc:%d\n", zdev->fid, ret);
if (!ret)
- slot->zdev->state = ZPCI_FN_STATE_CONFIGURED;
+ zdev->state = ZPCI_FN_STATE_CONFIGURED;
return ret;
}
-static inline int slot_deconfigure(struct slot *slot)
+static inline int zdev_deconfigure(struct zpci_dev *zdev)
{
- int ret = sclp_pci_deconfigure(slot->zdev->fid);
+ int ret = sclp_pci_deconfigure(zdev->fid);
- zpci_dbg(3, "deconf fid:%x, rc:%d\n", slot->zdev->fid, ret);
+ zpci_dbg(3, "deconf fid:%x, rc:%d\n", zdev->fid, ret);
if (!ret)
- slot->zdev->state = ZPCI_FN_STATE_STANDBY;
+ zdev->state = ZPCI_FN_STATE_STANDBY;
return ret;
}
static int enable_slot(struct hotplug_slot *hotplug_slot)
{
- struct slot *slot = hotplug_slot->private;
+ struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev,
+ hotplug_slot);
+ struct zpci_bus *zbus = zdev->zbus;
int rc;
- if (slot->zdev->state != ZPCI_FN_STATE_STANDBY)
+ if (zdev->state != ZPCI_FN_STATE_STANDBY)
return -EIO;
- rc = slot_configure(slot);
+ rc = zdev_configure(zdev);
if (rc)
return rc;
- rc = zpci_enable_device(slot->zdev);
+ rc = zpci_enable_device(zdev);
if (rc)
goto out_deconfigure;
- pci_scan_slot(slot->zdev->bus, ZPCI_DEVFN);
+ pci_scan_slot(zbus->bus, zdev->devfn);
pci_lock_rescan_remove();
- pci_bus_add_devices(slot->zdev->bus);
+ pci_bus_add_devices(zbus->bus);
pci_unlock_rescan_remove();
return rc;
out_deconfigure:
- slot_deconfigure(slot);
+ zdev_deconfigure(zdev);
return rc;
}
static int disable_slot(struct hotplug_slot *hotplug_slot)
{
- struct slot *slot = hotplug_slot->private;
+ struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev,
+ hotplug_slot);
struct pci_dev *pdev;
int rc;
- if (!zpci_fn_configured(slot->zdev->state))
+ if (!zpci_fn_configured(zdev->state))
return -EIO;
- pdev = pci_get_slot(slot->zdev->bus, ZPCI_DEVFN);
- if (pdev) {
- pci_stop_and_remove_bus_device_locked(pdev);
+ pdev = pci_get_slot(zdev->zbus->bus, zdev->devfn);
+ if (pdev && pci_num_vf(pdev)) {
pci_dev_put(pdev);
+ return -EBUSY;
}
+ pci_dev_put(pdev);
- rc = zpci_disable_device(slot->zdev);
+ zpci_remove_device(zdev, false);
+
+ rc = zpci_disable_device(zdev);
if (rc)
return rc;
- return slot_deconfigure(slot);
+ return zdev_deconfigure(zdev);
}
static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
- struct slot *slot = hotplug_slot->private;
+ struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev,
+ hotplug_slot);
- switch (slot->zdev->state) {
- case ZPCI_FN_STATE_STANDBY:
- *value = 0;
- break;
- default:
- *value = 1;
- break;
- }
+ *value = zpci_is_device_configured(zdev) ? 1 : 0;
return 0;
}
@@ -130,7 +120,7 @@
return 0;
}
-static struct hotplug_slot_ops s390_hotplug_slot_ops = {
+static const struct hotplug_slot_ops s390_hotplug_slot_ops = {
.enable_slot = enable_slot,
.disable_slot = disable_slot,
.get_power_status = get_power_status,
@@ -139,68 +129,17 @@
int zpci_init_slot(struct zpci_dev *zdev)
{
- struct hotplug_slot *hotplug_slot;
- struct hotplug_slot_info *info;
char name[SLOT_NAME_SIZE];
- struct slot *slot;
- int rc;
+ struct zpci_bus *zbus = zdev->zbus;
- if (!zdev)
- return 0;
-
- slot = kzalloc(sizeof(*slot), GFP_KERNEL);
- if (!slot)
- goto error;
-
- hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
- if (!hotplug_slot)
- goto error_hp;
- hotplug_slot->private = slot;
-
- slot->hotplug_slot = hotplug_slot;
- slot->zdev = zdev;
-
- info = kzalloc(sizeof(*info), GFP_KERNEL);
- if (!info)
- goto error_info;
- hotplug_slot->info = info;
-
- hotplug_slot->ops = &s390_hotplug_slot_ops;
-
- get_power_status(hotplug_slot, &info->power_status);
- get_adapter_status(hotplug_slot, &info->adapter_status);
+ zdev->hotplug_slot.ops = &s390_hotplug_slot_ops;
snprintf(name, SLOT_NAME_SIZE, "%08x", zdev->fid);
- rc = pci_hp_register(slot->hotplug_slot, zdev->bus,
- ZPCI_DEVFN, name);
- if (rc)
- goto error_reg;
-
- list_add(&slot->slot_list, &s390_hotplug_slot_list);
- return 0;
-
-error_reg:
- kfree(info);
-error_info:
- kfree(hotplug_slot);
-error_hp:
- kfree(slot);
-error:
- return -ENOMEM;
+ return pci_hp_register(&zdev->hotplug_slot, zbus->bus,
+ zdev->devfn, name);
}
void zpci_exit_slot(struct zpci_dev *zdev)
{
- struct slot *slot, *next;
-
- list_for_each_entry_safe(slot, next, &s390_hotplug_slot_list,
- slot_list) {
- if (slot->zdev != zdev)
- continue;
- list_del(&slot->slot_list);
- pci_hp_deregister(slot->hotplug_slot);
- kfree(slot->hotplug_slot->info);
- kfree(slot->hotplug_slot);
- kfree(slot);
- }
+ pci_hp_deregister(&zdev->hotplug_slot);
}
--
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