mirror of https://gitee.com/openkylin/linux.git
staging: unisys: remove file.c and pass functionality to visorchipset
This patch trasitions the include files and functions from file.c and places them into visorchipset_main.c Signed-off-by: Erik Arfvidson <erik.arfvidson@unisys.com> Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Erik Arfvidson
Greg Kroah-Hartman
parent
95e967569d
commit
e3420ed662
|
|
@ -4,7 +4,7 @@
|
|||
|
||||
obj-$(CONFIG_UNISYS_VISORCHIPSET) += visorchipset.o
|
||||
|
||||
visorchipset-y := visorchipset_main.o file.o parser.o
|
||||
visorchipset-y := visorchipset_main.o parser.o
|
||||
|
||||
ccflags-y += -Idrivers/staging/unisys/include
|
||||
ccflags-y += -Idrivers/staging/unisys/uislib
|
||||
|
|
|
|||
|
|
@ -1,162 +0,0 @@
|
|||
/* file.c
|
||||
*
|
||||
* Copyright (C) 2010 - 2013 UNISYS CORPORATION
|
||||
* All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or (at
|
||||
* your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
||||
* NON INFRINGEMENT. See the GNU General Public License for more
|
||||
* details.
|
||||
*/
|
||||
|
||||
/* This contains the implementation that allows a usermode program to
|
||||
* communicate with the visorchipset driver using a device/file interface.
|
||||
*/
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/mm.h>
|
||||
|
||||
#include "version.h"
|
||||
#include "visorchipset.h"
|
||||
#include "visorbus.h"
|
||||
#include "uisutils.h"
|
||||
#include "visorchipset.h"
|
||||
|
||||
#define CURRENT_FILE_PC VISOR_CHIPSET_PC_file_c
|
||||
|
||||
static struct cdev file_cdev;
|
||||
static struct visorchannel **file_controlvm_channel;
|
||||
|
||||
void
|
||||
visorchipset_file_cleanup(dev_t major_dev)
|
||||
{
|
||||
if (file_cdev.ops)
|
||||
cdev_del(&file_cdev);
|
||||
file_cdev.ops = NULL;
|
||||
unregister_chrdev_region(major_dev, 1);
|
||||
}
|
||||
|
||||
static int
|
||||
visorchipset_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
unsigned minor_number = iminor(inode);
|
||||
|
||||
if (minor_number)
|
||||
return -ENODEV;
|
||||
file->private_data = NULL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
visorchipset_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
visorchipset_mmap(struct file *file, struct vm_area_struct *vma)
|
||||
{
|
||||
unsigned long physaddr = 0;
|
||||
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
|
||||
GUEST_PHYSICAL_ADDRESS addr = 0;
|
||||
|
||||
/* sv_enable_dfp(); */
|
||||
if (offset & (PAGE_SIZE - 1))
|
||||
return -ENXIO; /* need aligned offsets */
|
||||
|
||||
switch (offset) {
|
||||
case VISORCHIPSET_MMAP_CONTROLCHANOFFSET:
|
||||
vma->vm_flags |= VM_IO;
|
||||
if (!*file_controlvm_channel)
|
||||
return -ENXIO;
|
||||
|
||||
visorchannel_read(*file_controlvm_channel,
|
||||
offsetof(struct spar_controlvm_channel_protocol,
|
||||
gp_control_channel),
|
||||
&addr, sizeof(addr));
|
||||
if (!addr)
|
||||
return -ENXIO;
|
||||
|
||||
physaddr = (unsigned long)addr;
|
||||
if (remap_pfn_range(vma, vma->vm_start,
|
||||
physaddr >> PAGE_SHIFT,
|
||||
vma->vm_end - vma->vm_start,
|
||||
/*pgprot_noncached */
|
||||
(vma->vm_page_prot))) {
|
||||
return -EAGAIN;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
return -ENOSYS;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static long visorchipset_ioctl(struct file *file, unsigned int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
s64 adjustment;
|
||||
s64 vrtc_offset;
|
||||
|
||||
switch (cmd) {
|
||||
case VMCALL_QUERY_GUEST_VIRTUAL_TIME_OFFSET:
|
||||
/* get the physical rtc offset */
|
||||
vrtc_offset = issue_vmcall_query_guest_virtual_time_offset();
|
||||
if (copy_to_user((void __user *)arg, &vrtc_offset,
|
||||
sizeof(vrtc_offset))) {
|
||||
return -EFAULT;
|
||||
}
|
||||
return SUCCESS;
|
||||
case VMCALL_UPDATE_PHYSICAL_TIME:
|
||||
if (copy_from_user(&adjustment, (void __user *)arg,
|
||||
sizeof(adjustment))) {
|
||||
return -EFAULT;
|
||||
}
|
||||
return issue_vmcall_update_physical_time(adjustment);
|
||||
default:
|
||||
return -EFAULT;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct file_operations visorchipset_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = visorchipset_open,
|
||||
.read = NULL,
|
||||
.write = NULL,
|
||||
.unlocked_ioctl = visorchipset_ioctl,
|
||||
.release = visorchipset_release,
|
||||
.mmap = visorchipset_mmap,
|
||||
};
|
||||
|
||||
int
|
||||
visorchipset_file_init(dev_t major_dev, struct visorchannel **controlvm_channel)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
file_controlvm_channel = controlvm_channel;
|
||||
cdev_init(&file_cdev, &visorchipset_fops);
|
||||
file_cdev.owner = THIS_MODULE;
|
||||
if (MAJOR(major_dev) == 0) {
|
||||
rc = alloc_chrdev_region(&major_dev, 0, 1, MYDRVNAME);
|
||||
/* dynamic major device number registration required */
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
} else {
|
||||
/* static major device number registration required */
|
||||
rc = register_chrdev_region(major_dev, 1, MYDRVNAME);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
}
|
||||
rc = cdev_add(&file_cdev, MKDEV(MAJOR(major_dev), 0), 1);
|
||||
if (rc < 0) {
|
||||
unregister_chrdev_region(major_dev, 1);
|
||||
return rc;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -16,7 +16,6 @@
|
|||
*/
|
||||
|
||||
#include "version.h"
|
||||
#include "visorchipset.h"
|
||||
#include "procobjecttree.h"
|
||||
#include "visorbus.h"
|
||||
#include "periodic_work.h"
|
||||
|
|
@ -24,7 +23,10 @@
|
|||
#include "uisutils.h"
|
||||
#include "controlvmcompletionstatus.h"
|
||||
#include "guestlinuxdebug.h"
|
||||
#include "visorchipset.h"
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/nls.h>
|
||||
#include <linux/netdevice.h>
|
||||
#include <linux/platform_device.h>
|
||||
|
|
@ -56,6 +58,23 @@ static int visorchipset_testteardown;
|
|||
static int visorchipset_disable_controlvm;
|
||||
static int visorchipset_holdchipsetready;
|
||||
|
||||
static int
|
||||
visorchipset_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
unsigned minor_number = iminor(inode);
|
||||
|
||||
if (minor_number)
|
||||
return -ENODEV;
|
||||
file->private_data = NULL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
visorchipset_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* When the controlvm channel is idle for at least MIN_IDLE_SECONDS,
|
||||
* we switch to slow polling mode. As soon as we get a controlvm
|
||||
* message, we switch back to fast polling mode.
|
||||
|
|
@ -74,6 +93,8 @@ static struct delayed_work periodic_controlvm_work;
|
|||
static struct workqueue_struct *periodic_controlvm_workqueue;
|
||||
static DEFINE_SEMAPHORE(notifier_lock);
|
||||
|
||||
static struct cdev file_cdev;
|
||||
static struct visorchannel **file_controlvm_channel;
|
||||
static struct controlvm_message_header g_chipset_msg_hdr;
|
||||
static const uuid_le spar_diag_pool_channel_protocol_uuid =
|
||||
SPAR_DIAG_POOL_CHANNEL_PROTOCOL_UUID;
|
||||
|
|
@ -2169,6 +2190,110 @@ static ssize_t deviceenabled_store(struct device *dev,
|
|||
return count;
|
||||
}
|
||||
|
||||
static int
|
||||
visorchipset_mmap(struct file *file, struct vm_area_struct *vma)
|
||||
{
|
||||
unsigned long physaddr = 0;
|
||||
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
|
||||
GUEST_PHYSICAL_ADDRESS addr = 0;
|
||||
|
||||
/* sv_enable_dfp(); */
|
||||
if (offset & (PAGE_SIZE - 1))
|
||||
return -ENXIO; /* need aligned offsets */
|
||||
|
||||
switch (offset) {
|
||||
case VISORCHIPSET_MMAP_CONTROLCHANOFFSET:
|
||||
vma->vm_flags |= VM_IO;
|
||||
if (!*file_controlvm_channel)
|
||||
return -ENXIO;
|
||||
|
||||
visorchannel_read(*file_controlvm_channel,
|
||||
offsetof(struct spar_controlvm_channel_protocol,
|
||||
gp_control_channel),
|
||||
&addr, sizeof(addr));
|
||||
if (!addr)
|
||||
return -ENXIO;
|
||||
|
||||
physaddr = (unsigned long)addr;
|
||||
if (remap_pfn_range(vma, vma->vm_start,
|
||||
physaddr >> PAGE_SHIFT,
|
||||
vma->vm_end - vma->vm_start,
|
||||
/*pgprot_noncached */
|
||||
(vma->vm_page_prot))) {
|
||||
return -EAGAIN;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
return -ENXIO;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static long visorchipset_ioctl(struct file *file, unsigned int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
s64 adjustment;
|
||||
s64 vrtc_offset;
|
||||
|
||||
switch (cmd) {
|
||||
case VMCALL_QUERY_GUEST_VIRTUAL_TIME_OFFSET:
|
||||
/* get the physical rtc offset */
|
||||
vrtc_offset = issue_vmcall_query_guest_virtual_time_offset();
|
||||
if (copy_to_user((void __user *)arg, &vrtc_offset,
|
||||
sizeof(vrtc_offset))) {
|
||||
return -EFAULT;
|
||||
}
|
||||
return SUCCESS;
|
||||
case VMCALL_UPDATE_PHYSICAL_TIME:
|
||||
if (copy_from_user(&adjustment, (void __user *)arg,
|
||||
sizeof(adjustment))) {
|
||||
return -EFAULT;
|
||||
}
|
||||
return issue_vmcall_update_physical_time(adjustment);
|
||||
default:
|
||||
return -EFAULT;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct file_operations visorchipset_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = visorchipset_open,
|
||||
.read = NULL,
|
||||
.write = NULL,
|
||||
.unlocked_ioctl = visorchipset_ioctl,
|
||||
.release = visorchipset_release,
|
||||
.mmap = visorchipset_mmap,
|
||||
};
|
||||
|
||||
int
|
||||
visorchipset_file_init(dev_t major_dev, struct visorchannel **controlvm_channel)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
file_controlvm_channel = controlvm_channel;
|
||||
cdev_init(&file_cdev, &visorchipset_fops);
|
||||
file_cdev.owner = THIS_MODULE;
|
||||
if (MAJOR(major_dev) == 0) {
|
||||
rc = alloc_chrdev_region(&major_dev, 0, 1, MYDRVNAME);
|
||||
/* dynamic major device number registration required */
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
} else {
|
||||
/* static major device number registration required */
|
||||
rc = register_chrdev_region(major_dev, 1, MYDRVNAME);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
}
|
||||
rc = cdev_add(&file_cdev, MKDEV(MAJOR(major_dev), 0), 1);
|
||||
if (rc < 0) {
|
||||
unregister_chrdev_region(major_dev, 1);
|
||||
return rc;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
static int __init
|
||||
visorchipset_init(void)
|
||||
{
|
||||
|
|
@ -2262,6 +2387,15 @@ visorchipset_init(void)
|
|||
return rc;
|
||||
}
|
||||
|
||||
void
|
||||
visorchipset_file_cleanup(dev_t major_dev)
|
||||
{
|
||||
if (file_cdev.ops)
|
||||
cdev_del(&file_cdev);
|
||||
file_cdev.ops = NULL;
|
||||
unregister_chrdev_region(major_dev, 1);
|
||||
}
|
||||
|
||||
static void
|
||||
visorchipset_exit(void)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue