mirror of https://gitee.com/openkylin/linux.git
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Compaq Hot Plug Controller Driver
|
|
*
|
|
* Copyright (c) 1995,2001 Compaq Computer Corporation
|
|
* Copyright (c) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
|
|
* Copyright (c) 2001 IBM Corp.
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* Send feedback to <greg@kroah.com>
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include "shpchp.h"
|
|
|
|
|
|
/* A few routines that create sysfs entries for the hot plug controller */
|
|
|
|
static ssize_t show_ctrl(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct pci_dev *pdev;
|
|
char *out = buf;
|
|
int index, busnr;
|
|
struct resource *res;
|
|
struct pci_bus *bus;
|
|
|
|
pdev = to_pci_dev(dev);
|
|
bus = pdev->subordinate;
|
|
|
|
out += sprintf(buf, "Free resources: memory\n");
|
|
pci_bus_for_each_resource(bus, res, index) {
|
|
if (res && (res->flags & IORESOURCE_MEM) &&
|
|
!(res->flags & IORESOURCE_PREFETCH)) {
|
|
out += sprintf(out, "start = %8.8llx, length = %8.8llx\n",
|
|
(unsigned long long)res->start,
|
|
(unsigned long long)resource_size(res));
|
|
}
|
|
}
|
|
out += sprintf(out, "Free resources: prefetchable memory\n");
|
|
pci_bus_for_each_resource(bus, res, index) {
|
|
if (res && (res->flags & IORESOURCE_MEM) &&
|
|
(res->flags & IORESOURCE_PREFETCH)) {
|
|
out += sprintf(out, "start = %8.8llx, length = %8.8llx\n",
|
|
(unsigned long long)res->start,
|
|
(unsigned long long)resource_size(res));
|
|
}
|
|
}
|
|
out += sprintf(out, "Free resources: IO\n");
|
|
pci_bus_for_each_resource(bus, res, index) {
|
|
if (res && (res->flags & IORESOURCE_IO)) {
|
|
out += sprintf(out, "start = %8.8llx, length = %8.8llx\n",
|
|
(unsigned long long)res->start,
|
|
(unsigned long long)resource_size(res));
|
|
}
|
|
}
|
|
out += sprintf(out, "Free resources: bus numbers\n");
|
|
for (busnr = bus->busn_res.start; busnr <= bus->busn_res.end; busnr++) {
|
|
if (!pci_find_bus(pci_domain_nr(bus), busnr))
|
|
break;
|
|
}
|
|
if (busnr < bus->busn_res.end)
|
|
out += sprintf(out, "start = %8.8x, length = %8.8x\n",
|
|
busnr, (int)(bus->busn_res.end - busnr));
|
|
|
|
return out - buf;
|
|
}
|
|
static DEVICE_ATTR(ctrl, S_IRUGO, show_ctrl, NULL);
|
|
|
|
int shpchp_create_ctrl_files(struct controller *ctrl)
|
|
{
|
|
return device_create_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
|
|
}
|
|
|
|
void shpchp_remove_ctrl_files(struct controller *ctrl)
|
|
{
|
|
device_remove_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
|
|
}
|