Branch data     Line data    Source code

       1                 :            : // SPDX-License-Identifier: GPL-2.0+
       2                 :            : /*
       3                 :            :  * Compaq Hot Plug Controller Driver
       4                 :            :  *
       5                 :            :  * Copyright (c) 1995,2001 Compaq Computer Corporation
       6                 :            :  * Copyright (c) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
       7                 :            :  * Copyright (c) 2001 IBM Corp.
       8                 :            :  *
       9                 :            :  * All rights reserved.
      10                 :            :  *
      11                 :            :  * Send feedback to <greg@kroah.com>
      12                 :            :  *
      13                 :            :  */
      14                 :            : 
      15                 :            : #include <linux/module.h>
      16                 :            : #include <linux/kernel.h>
      17                 :            : #include <linux/types.h>
      18                 :            : #include <linux/pci.h>
      19                 :            : #include "shpchp.h"
      20                 :            : 
      21                 :            : 
      22                 :            : /* A few routines that create sysfs entries for the hot plug controller */
      23                 :            : 
      24                 :          0 : static ssize_t show_ctrl(struct device *dev, struct device_attribute *attr, char *buf)
      25                 :            : {
      26                 :          0 :         struct pci_dev *pdev;
      27                 :          0 :         char *out = buf;
      28                 :          0 :         int index, busnr;
      29                 :          0 :         struct resource *res;
      30                 :          0 :         struct pci_bus *bus;
      31                 :            : 
      32                 :          0 :         pdev = to_pci_dev(dev);
      33                 :          0 :         bus = pdev->subordinate;
      34                 :            : 
      35                 :          0 :         out += sprintf(buf, "Free resources: memory\n");
      36   [ #  #  #  # ]:          0 :         pci_bus_for_each_resource(bus, res, index) {
      37   [ #  #  #  # ]:          0 :                 if (res && (res->flags & IORESOURCE_MEM) &&
      38                 :            :                                 !(res->flags & IORESOURCE_PREFETCH)) {
      39                 :          0 :                         out += sprintf(out, "start = %8.8llx, length = %8.8llx\n",
      40                 :            :                                        (unsigned long long)res->start,
      41                 :          0 :                                        (unsigned long long)resource_size(res));
      42                 :            :                 }
      43                 :            :         }
      44                 :          0 :         out += sprintf(out, "Free resources: prefetchable memory\n");
      45   [ #  #  #  # ]:          0 :         pci_bus_for_each_resource(bus, res, index) {
      46   [ #  #  #  # ]:          0 :                 if (res && (res->flags & IORESOURCE_MEM) &&
      47                 :            :                                (res->flags & IORESOURCE_PREFETCH)) {
      48                 :          0 :                         out += sprintf(out, "start = %8.8llx, length = %8.8llx\n",
      49                 :            :                                        (unsigned long long)res->start,
      50                 :          0 :                                        (unsigned long long)resource_size(res));
      51                 :            :                 }
      52                 :            :         }
      53                 :          0 :         out += sprintf(out, "Free resources: IO\n");
      54   [ #  #  #  # ]:          0 :         pci_bus_for_each_resource(bus, res, index) {
      55   [ #  #  #  # ]:          0 :                 if (res && (res->flags & IORESOURCE_IO)) {
      56                 :          0 :                         out += sprintf(out, "start = %8.8llx, length = %8.8llx\n",
      57                 :            :                                        (unsigned long long)res->start,
      58                 :          0 :                                        (unsigned long long)resource_size(res));
      59                 :            :                 }
      60                 :            :         }
      61                 :          0 :         out += sprintf(out, "Free resources: bus numbers\n");
      62         [ #  # ]:          0 :         for (busnr = bus->busn_res.start; busnr <= bus->busn_res.end; busnr++) {
      63         [ #  # ]:          0 :                 if (!pci_find_bus(pci_domain_nr(bus), busnr))
      64                 :            :                         break;
      65                 :            :         }
      66         [ #  # ]:          0 :         if (busnr < bus->busn_res.end)
      67                 :          0 :                 out += sprintf(out, "start = %8.8x, length = %8.8x\n",
      68                 :          0 :                                 busnr, (int)(bus->busn_res.end - busnr));
      69                 :            : 
      70                 :          0 :         return out - buf;
      71                 :            : }
      72                 :            : static DEVICE_ATTR(ctrl, S_IRUGO, show_ctrl, NULL);
      73                 :            : 
      74                 :          0 : int shpchp_create_ctrl_files(struct controller *ctrl)
      75                 :            : {
      76                 :          0 :         return device_create_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
      77                 :            : }
      78                 :            : 
      79                 :          0 : void shpchp_remove_ctrl_files(struct controller *ctrl)
      80                 :            : {
      81                 :          0 :         device_remove_file(&ctrl->pci_dev->dev, &dev_attr_ctrl);
      82                 :          0 : }