From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/pci/hotplug/shpchp_sysfs.c | 86 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 drivers/pci/hotplug/shpchp_sysfs.c (limited to 'drivers/pci/hotplug/shpchp_sysfs.c') diff --git a/drivers/pci/hotplug/shpchp_sysfs.c b/drivers/pci/hotplug/shpchp_sysfs.c new file mode 100644 index 0000000000..01d47a42da --- /dev/null +++ b/drivers/pci/hotplug/shpchp_sysfs.c @@ -0,0 +1,86 @@ +// 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 + * + */ + +#include +#include +#include +#include +#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; + struct resource *res; + struct pci_bus *bus; + size_t len = 0; + int busnr; + + pdev = to_pci_dev(dev); + bus = pdev->subordinate; + + len += sysfs_emit_at(buf, len, "Free resources: memory\n"); + pci_bus_for_each_resource(bus, res) { + if (res && (res->flags & IORESOURCE_MEM) && + !(res->flags & IORESOURCE_PREFETCH)) { + len += sysfs_emit_at(buf, len, + "start = %8.8llx, length = %8.8llx\n", + (unsigned long long)res->start, + (unsigned long long)resource_size(res)); + } + } + len += sysfs_emit_at(buf, len, "Free resources: prefetchable memory\n"); + pci_bus_for_each_resource(bus, res) { + if (res && (res->flags & IORESOURCE_MEM) && + (res->flags & IORESOURCE_PREFETCH)) { + len += sysfs_emit_at(buf, len, + "start = %8.8llx, length = %8.8llx\n", + (unsigned long long)res->start, + (unsigned long long)resource_size(res)); + } + } + len += sysfs_emit_at(buf, len, "Free resources: IO\n"); + pci_bus_for_each_resource(bus, res) { + if (res && (res->flags & IORESOURCE_IO)) { + len += sysfs_emit_at(buf, len, + "start = %8.8llx, length = %8.8llx\n", + (unsigned long long)res->start, + (unsigned long long)resource_size(res)); + } + } + len += sysfs_emit_at(buf, len, "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) + len += sysfs_emit_at(buf, len, + "start = %8.8x, length = %8.8x\n", + busnr, (int)(bus->busn_res.end - busnr)); + + return len; +} +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); +} -- cgit v1.2.3