103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
/*
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* Compaq Hot Plug Controller Driver
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*
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* Copyright (c) 1995,2001 Compaq Computer Corporation
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* Copyright (c) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (c) 2001 IBM Corp.
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <greg@kroah.com>
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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#include "shpchp.h"
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/* A few routines that create sysfs entries for the hot plug controller */
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static ssize_t show_ctrl (struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct pci_dev *pdev;
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char * out = buf;
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int index, busnr;
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struct resource *res;
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struct pci_bus *bus;
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pdev = container_of (dev, struct pci_dev, dev);
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bus = pdev->subordinate;
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out += sprintf(buf, "Free resources: memory\n");
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for (index = 0; index < PCI_BUS_NUM_RESOURCES; index++) {
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res = bus->resource[index];
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if (res && (res->flags & IORESOURCE_MEM) &&
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!(res->flags & IORESOURCE_PREFETCH)) {
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out += sprintf(out, "start = %8.8llx, "
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"length = %8.8llx\n",
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(unsigned long long)res->start,
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(unsigned long long)(res->end - res->start));
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}
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}
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out += sprintf(out, "Free resources: prefetchable memory\n");
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for (index = 0; index < PCI_BUS_NUM_RESOURCES; index++) {
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res = bus->resource[index];
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if (res && (res->flags & IORESOURCE_MEM) &&
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(res->flags & IORESOURCE_PREFETCH)) {
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out += sprintf(out, "start = %8.8llx, "
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"length = %8.8llx\n",
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(unsigned long long)res->start,
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(unsigned long long)(res->end - res->start));
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}
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}
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out += sprintf(out, "Free resources: IO\n");
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for (index = 0; index < PCI_BUS_NUM_RESOURCES; index++) {
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res = bus->resource[index];
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if (res && (res->flags & IORESOURCE_IO)) {
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out += sprintf(out, "start = %8.8llx, "
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"length = %8.8llx\n",
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(unsigned long long)res->start,
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(unsigned long long)(res->end - res->start));
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}
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}
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out += sprintf(out, "Free resources: bus numbers\n");
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for (busnr = bus->secondary; busnr <= bus->subordinate; busnr++) {
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if (!pci_find_bus(pci_domain_nr(bus), busnr))
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break;
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}
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if (busnr < bus->subordinate)
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out += sprintf(out, "start = %8.8x, length = %8.8x\n",
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busnr, (bus->subordinate - busnr));
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return out - buf;
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}
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static DEVICE_ATTR (ctrl, S_IRUGO, show_ctrl, NULL);
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int __must_check shpchp_create_ctrl_files (struct controller *ctrl)
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{
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return device_create_file (&ctrl->pci_dev->dev, &dev_attr_ctrl);
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}
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void shpchp_remove_ctrl_files(struct controller *ctrl)
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{
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device_remove_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
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}
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