// 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); }