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86 lines
2.5 KiB
86 lines
2.5 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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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 ([email protected]) |
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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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* Send feedback to <[email protected]> |
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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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int index, busnr; |
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struct resource *res; |
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struct pci_bus *bus; |
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size_t len = 0; |
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pdev = to_pci_dev(dev); |
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bus = pdev->subordinate; |
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len += sysfs_emit_at(buf, len, "Free resources: memory\n"); |
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pci_bus_for_each_resource(bus, res, index) { |
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if (res && (res->flags & IORESOURCE_MEM) && |
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!(res->flags & IORESOURCE_PREFETCH)) { |
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len += sysfs_emit_at(buf, len, |
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"start = %8.8llx, length = %8.8llx\n", |
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(unsigned long long)res->start, |
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(unsigned long long)resource_size(res)); |
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} |
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} |
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len += sysfs_emit_at(buf, len, "Free resources: prefetchable memory\n"); |
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pci_bus_for_each_resource(bus, res, index) { |
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if (res && (res->flags & IORESOURCE_MEM) && |
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(res->flags & IORESOURCE_PREFETCH)) { |
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len += sysfs_emit_at(buf, len, |
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"start = %8.8llx, length = %8.8llx\n", |
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(unsigned long long)res->start, |
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(unsigned long long)resource_size(res)); |
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} |
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} |
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len += sysfs_emit_at(buf, len, "Free resources: IO\n"); |
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pci_bus_for_each_resource(bus, res, index) { |
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if (res && (res->flags & IORESOURCE_IO)) { |
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len += sysfs_emit_at(buf, len, |
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"start = %8.8llx, length = %8.8llx\n", |
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(unsigned long long)res->start, |
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(unsigned long long)resource_size(res)); |
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} |
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} |
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len += sysfs_emit_at(buf, len, "Free resources: bus numbers\n"); |
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for (busnr = bus->busn_res.start; busnr <= bus->busn_res.end; 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->busn_res.end) |
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len += sysfs_emit_at(buf, len, |
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"start = %8.8x, length = %8.8x\n", |
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busnr, (int)(bus->busn_res.end - busnr)); |
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return len; |
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} |
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static DEVICE_ATTR(ctrl, S_IRUGO, show_ctrl, NULL); |
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int 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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