1 /* 2 * Compaq Hot Plug Controller Driver 3 * 4 * Copyright (c) 1995,2001 Compaq Computer Corporation 5 * Copyright (c) 2001,2003 Greg Kroah-Hartman (greg@kroah.com) 6 * Copyright (c) 2001 IBM Corp. 7 * 8 * All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or (at 13 * your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 18 * NON INFRINGEMENT. See the GNU General Public License for more 19 * details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 24 * 25 * Send feedback to <greg@kroah.com> 26 * 27 */ 28 29 #include <linux/module.h> 30 #include <linux/kernel.h> 31 #include <linux/types.h> 32 #include <linux/pci.h> 33 #include "shpchp.h" 34 35 36 /* A few routines that create sysfs entries for the hot plug controller */ 37 38 static ssize_t show_ctrl(struct device *dev, struct device_attribute *attr, char *buf) 39 { 40 struct pci_dev *pdev; 41 char *out = buf; 42 int index, busnr; 43 struct resource *res; 44 struct pci_bus *bus; 45 46 pdev = to_pci_dev(dev); 47 bus = pdev->subordinate; 48 49 out += sprintf(buf, "Free resources: memory\n"); 50 pci_bus_for_each_resource(bus, res, index) { 51 if (res && (res->flags & IORESOURCE_MEM) && 52 !(res->flags & IORESOURCE_PREFETCH)) { 53 out += sprintf(out, "start = %8.8llx, length = %8.8llx\n", 54 (unsigned long long)res->start, 55 (unsigned long long)resource_size(res)); 56 } 57 } 58 out += sprintf(out, "Free resources: prefetchable memory\n"); 59 pci_bus_for_each_resource(bus, res, index) { 60 if (res && (res->flags & IORESOURCE_MEM) && 61 (res->flags & IORESOURCE_PREFETCH)) { 62 out += sprintf(out, "start = %8.8llx, length = %8.8llx\n", 63 (unsigned long long)res->start, 64 (unsigned long long)resource_size(res)); 65 } 66 } 67 out += sprintf(out, "Free resources: IO\n"); 68 pci_bus_for_each_resource(bus, res, index) { 69 if (res && (res->flags & IORESOURCE_IO)) { 70 out += sprintf(out, "start = %8.8llx, length = %8.8llx\n", 71 (unsigned long long)res->start, 72 (unsigned long long)resource_size(res)); 73 } 74 } 75 out += sprintf(out, "Free resources: bus numbers\n"); 76 for (busnr = bus->busn_res.start; busnr <= bus->busn_res.end; busnr++) { 77 if (!pci_find_bus(pci_domain_nr(bus), busnr)) 78 break; 79 } 80 if (busnr < bus->busn_res.end) 81 out += sprintf(out, "start = %8.8x, length = %8.8x\n", 82 busnr, (int)(bus->busn_res.end - busnr)); 83 84 return out - buf; 85 } 86 static DEVICE_ATTR(ctrl, S_IRUGO, show_ctrl, NULL); 87 88 int shpchp_create_ctrl_files(struct controller *ctrl) 89 { 90 return device_create_file(&ctrl->pci_dev->dev, &dev_attr_ctrl); 91 } 92 93 void shpchp_remove_ctrl_files(struct controller *ctrl) 94 { 95 device_remove_file(&ctrl->pci_dev->dev, &dev_attr_ctrl); 96 } 97