linux-imx

// SPDX-License-Identifier: GPL-2.0

/* drivers/nubus/proc.c: Proc FS interface for NuBus.

​

   By David Huggins-Daines <dhd@debian.org>

​

   Much code and many ideas from drivers/pci/proc.c:

   Copyright (c) 1997, 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz>

​

   This is initially based on the Zorro and PCI interfaces.  However,

   it works somewhat differently.  The intent is to provide a

   structure in /proc analogous to the structure of the NuBus ROM

   resources.

​

   Therefore each board function gets a directory, which may in turn

   contain subdirectories.  Each slot resource is a file.  Unrecognized

   resources are empty files, since every resource ID requires a special

   case (e.g. if the resource ID implies a directory or block, then its

   value has to be interpreted as a slot ROM pointer etc.).

 */

​

#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/nubus.h>

#include <linux/proc_fs.h>

#include <linux/seq_file.h>

#include <linux/slab.h>

#include <linux/init.h>

#include <linux/module.h>

#include <linux/uaccess.h>

#include <asm/byteorder.h>

​

/*

 * /proc/bus/nubus/devices stuff

 */

​

static int

nubus_devices_proc_show(struct seq_file *m, void *v)

{

    struct nubus_rsrc *fres;

​

    for_each_func_rsrc(fres)

        seq_printf(m, "%x\t%04x %04x %04x %04x\t%08lx\n",

               fres->board->slot, fres->category, fres->type,

               fres->dr_sw, fres->dr_hw, fres->board->slot_addr);

    return 0;

}

​

static struct proc_dir_entry *proc_bus_nubus_dir;

​

/*

 * /proc/bus/nubus/x/ stuff

 */

​

struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board)

{

    char name[2];

​

    if (!proc_bus_nubus_dir)

        return NULL;

    snprintf(name, sizeof(name), "%x", board->slot);

    return proc_mkdir(name, proc_bus_nubus_dir);

}

​