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nubus: Rework /proc/bus/nubus/s/ implementation 

The /proc/bus/nubus/s/ directory tree for any slot s is missing a lot
of information. The struct file_operations methods have long been left
unimplemented (hence the familiar compile-time warning, "Need to set
some I/O handlers here").

Slot resources have a complex structure which varies depending on board
function. The logic for interpreting these ROM data structures is found
in nubus.c. Let's not duplicate that logic in proc.c.

Create the /proc/bus/nubus/s/ inodes while scanning slot s. During
descent through slot resource subdirectories, call the new
nubus_proc_add_foo() functions to create the procfs inodes.

Also add a new function, nubus_seq_write_rsrc_mem(), to write the
contents of a particular slot resource to a given seq_file. This is
used by the procfs file_operations methods, to finally give userspace
access to slot ROM information, such as the available video modes.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Finn Thain 2018-01-13 17:37:13 -05:00 committed by Geert Uytterhoeven
parent 883b8cb31a
commit 2f7dd07eca
3 changed files with 258 additions and 119 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

110
drivers/nubus/nubus.c
View File

@ -15,6 +15,7 @@
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <asm/setup.h>
#include <asm/page.h>
@ -146,7 +147,7 @@ static inline void *nubus_rom_addr(int slot)
return (void *)(0xF1000000 + (slot << 24));
}
static unsigned char *nubus_dirptr(const struct nubus_dirent *nd)
unsigned char *nubus_dirptr(const struct nubus_dirent *nd)
{
unsigned char *p = nd->base;
@ -173,7 +174,7 @@ void nubus_get_rsrc_mem(void *dest, const struct nubus_dirent *dirent,
}
EXPORT_SYMBOL(nubus_get_rsrc_mem);
void nubus_get_rsrc_str(char *dest, const struct nubus_dirent *dirent,
unsigned int nubus_get_rsrc_str(char *dest, const struct nubus_dirent *dirent,
unsigned int len)
{
char *t = dest;
@ -189,9 +190,33 @@ void nubus_get_rsrc_str(char *dest, const struct nubus_dirent *dirent,
}
if (len > 0)
*t = '\0';
return t - dest;
}
EXPORT_SYMBOL(nubus_get_rsrc_str);
void nubus_seq_write_rsrc_mem(struct seq_file *m,
const struct nubus_dirent *dirent,
unsigned int len)
{
unsigned long buf[32];
unsigned int buf_size = sizeof(buf);
unsigned char *p = nubus_dirptr(dirent);
/* If possible, write out full buffers */
while (len >= buf_size) {
unsigned int i;
for (i = 0; i < ARRAY_SIZE(buf); i++)
buf[i] = nubus_get_rom(&p, sizeof(buf[0]),
dirent->mask);
seq_write(m, buf, buf_size);
len -= buf_size;
}
/* If not, write out individual bytes */
while (len--)
seq_putc(m, nubus_get_rom(&p, 1, dirent->mask));
}
int nubus_get_root_dir(const struct nubus_board *board,
struct nubus_dir *dir)
{
@ -326,35 +351,35 @@ EXPORT_SYMBOL(nubus_find_rsrc);
looking at, and print out lots and lots of information from the
resource blocks. */
/* FIXME: A lot of this stuff will eventually be useful after
initialization, for intelligently probing Ethernet and video chips,
among other things. The rest of it should go in the /proc code.
For now, we just use it to give verbose boot logs. */
static int __init nubus_get_block_rsrc_dir(struct nubus_board *board,
struct proc_dir_entry *procdir,
const struct nubus_dirent *parent)
{
struct nubus_dir dir;
struct nubus_dirent ent;
nubus_get_subdir(parent, &dir);
dir.procdir = nubus_proc_add_rsrc_dir(procdir, parent, board);
while (nubus_readdir(&dir, &ent) != -1) {
u32 size;
nubus_get_rsrc_mem(&size, &ent, 4);
pr_debug(" block (0x%x), size %d\n", ent.type, size);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, size);
}
return 0;
}
static int __init nubus_get_display_vidmode(struct nubus_board *board,
struct proc_dir_entry *procdir,
const struct nubus_dirent *parent)
{
struct nubus_dir dir;
struct nubus_dirent ent;
nubus_get_subdir(parent, &dir);
dir.procdir = nubus_proc_add_rsrc_dir(procdir, parent, board);
while (nubus_readdir(&dir, &ent) != -1) {
switch (ent.type) {
@ -366,37 +391,42 @@ static int __init nubus_get_display_vidmode(struct nubus_board *board,
nubus_get_rsrc_mem(&size, &ent, 4);
pr_debug(" block (0x%x), size %d\n", ent.type,
size);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, size);
break;
}
default:
pr_debug(" unknown resource 0x%02x, data 0x%06x\n",
ent.type, ent.data);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, 0);
}
}
return 0;
}
static int __init nubus_get_display_resource(struct nubus_dev *dev,
struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
switch (ent->type) {
case NUBUS_RESID_GAMMADIR:
pr_debug(" gamma directory offset: 0x%06x\n", ent->data);
nubus_get_block_rsrc_dir(dev->board, ent);
nubus_get_block_rsrc_dir(dev->board, procdir, ent);
break;
case 0x0080 ... 0x0085:
pr_debug(" mode 0x%02x info offset: 0x%06x\n",
ent->type, ent->data);
nubus_get_display_vidmode(dev->board, ent);
nubus_get_display_vidmode(dev->board, procdir, ent);
break;
default:
pr_debug(" unknown resource 0x%02x, data 0x%06x\n",
ent->type, ent->data);
nubus_proc_add_rsrc_mem(procdir, ent, 0);
}
return 0;
}
static int __init nubus_get_network_resource(struct nubus_dev *dev,
struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
switch (ent->type) {
@ -406,16 +436,19 @@ static int __init nubus_get_network_resource(struct nubus_dev *dev,
nubus_get_rsrc_mem(addr, ent, 6);
pr_debug(" MAC address: %pM\n", addr);
nubus_proc_add_rsrc_mem(procdir, ent, 6);
break;
}
default:
pr_debug(" unknown resource 0x%02x, data 0x%06x\n",
ent->type, ent->data);
nubus_proc_add_rsrc_mem(procdir, ent, 0);
}
return 0;
}
static int __init nubus_get_cpu_resource(struct nubus_dev *dev,
struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
switch (ent->type) {
@ -426,6 +459,7 @@ static int __init nubus_get_cpu_resource(struct nubus_dev *dev,
nubus_get_rsrc_mem(&meminfo, ent, 8);
pr_debug(" memory: [ 0x%08lx 0x%08lx ]\n",
meminfo[0], meminfo[1]);
nubus_proc_add_rsrc_mem(procdir, ent, 8);
break;
}
case NUBUS_RESID_ROMINFO:
@ -435,31 +469,35 @@ static int __init nubus_get_cpu_resource(struct nubus_dev *dev,
nubus_get_rsrc_mem(&rominfo, ent, 8);
pr_debug(" ROM: [ 0x%08lx 0x%08lx ]\n",
rominfo[0], rominfo[1]);
nubus_proc_add_rsrc_mem(procdir, ent, 8);
break;
}
default:
pr_debug(" unknown resource 0x%02x, data 0x%06x\n",
ent->type, ent->data);
nubus_proc_add_rsrc_mem(procdir, ent, 0);
}
return 0;
}
static int __init nubus_get_private_resource(struct nubus_dev *dev,
struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
switch (dev->category) {
case NUBUS_CAT_DISPLAY:
nubus_get_display_resource(dev, ent);
nubus_get_display_resource(dev, procdir, ent);
break;
case NUBUS_CAT_NETWORK:
nubus_get_network_resource(dev, ent);
nubus_get_network_resource(dev, procdir, ent);
break;
case NUBUS_CAT_CPU:
nubus_get_cpu_resource(dev, ent);
nubus_get_cpu_resource(dev, procdir, ent);
break;
default:
pr_debug(" unknown resource 0x%02x, data 0x%06x\n",
ent->type, ent->data);
nubus_proc_add_rsrc_mem(procdir, ent, 0);
}
return 0;
}
@ -474,6 +512,7 @@ nubus_get_functional_resource(struct nubus_board *board, int slot,
pr_debug(" Functional resource 0x%02x:\n", parent->type);
nubus_get_subdir(parent, &dir);
dir.procdir = nubus_proc_add_rsrc_dir(board->procdir, parent, board);
/* Actually we should probably panic if this fails */
if ((dev = kzalloc(sizeof(*dev), GFP_ATOMIC)) == NULL)
@ -495,14 +534,17 @@ nubus_get_functional_resource(struct nubus_board *board, int slot,
dev->dr_hw = nbtdata[3];
pr_debug(" type: [cat 0x%x type 0x%x sw 0x%x hw 0x%x]\n",
nbtdata[0], nbtdata[1], nbtdata[2], nbtdata[3]);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, 8);
break;
}
case NUBUS_RESID_NAME:
{
char name[64];
unsigned int len;
nubus_get_rsrc_str(name, &ent, sizeof(name));
len = nubus_get_rsrc_str(name, &ent, sizeof(name));
pr_debug(" name: %s\n", name);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, len + 1);
break;
}
case NUBUS_RESID_DRVRDIR:
@ -511,7 +553,7 @@ nubus_get_functional_resource(struct nubus_board *board, int slot,
use this :-) */
pr_debug(" driver directory offset: 0x%06x\n",
ent.data);
nubus_get_block_rsrc_dir(board, &ent);
nubus_get_block_rsrc_dir(board, dir.procdir, &ent);
break;
}
case NUBUS_RESID_MINOR_BASEOS:
@ -523,6 +565,7 @@ nubus_get_functional_resource(struct nubus_board *board, int slot,
nubus_get_rsrc_mem(&base_offset, &ent, 4);
pr_debug(" memory offset: 0x%08x\n", base_offset);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, 4);
break;
}
case NUBUS_RESID_MINOR_LENGTH:
@ -532,18 +575,21 @@ nubus_get_functional_resource(struct nubus_board *board, int slot,
nubus_get_rsrc_mem(&length, &ent, 4);
pr_debug(" memory length: 0x%08x\n", length);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, 4);
break;
}
case NUBUS_RESID_FLAGS:
pr_debug(" flags: 0x%06x\n", ent.data);
nubus_proc_add_rsrc(dir.procdir, &ent);
break;
case NUBUS_RESID_HWDEVID:
pr_debug(" hwdevid: 0x%06x\n", ent.data);
nubus_proc_add_rsrc(dir.procdir, &ent);
break;
default:
/* Local/Private resources have their own
function */
nubus_get_private_resource(dev, &ent);
nubus_get_private_resource(dev, dir.procdir, &ent);
}
}
@ -552,6 +598,7 @@ nubus_get_functional_resource(struct nubus_board *board, int slot,
/* This is *really* cool. */
static int __init nubus_get_icon(struct nubus_board *board,
struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
/* Should be 32x32 if my memory serves me correctly */
@ -564,11 +611,13 @@ static int __init nubus_get_icon(struct nubus_board *board,
pr_debug(" %08x %08x %08x %08x\n",
icon[i * 4 + 0], icon[i * 4 + 1],
icon[i * 4 + 2], icon[i * 4 + 3]);
nubus_proc_add_rsrc_mem(procdir, ent, 128);
return 0;
}
static int __init nubus_get_vendorinfo(struct nubus_board *board,
struct proc_dir_entry *procdir,
const struct nubus_dirent *parent)
{
struct nubus_dir dir;
@ -578,15 +627,18 @@ static int __init nubus_get_vendorinfo(struct nubus_board *board,
pr_debug(" vendor info:\n");
nubus_get_subdir(parent, &dir);
dir.procdir = nubus_proc_add_rsrc_dir(procdir, parent, board);
while (nubus_readdir(&dir, &ent) != -1) {
char name[64];
unsigned int len;
/* These are all strings, we think */
nubus_get_rsrc_str(name, &ent, sizeof(name));
len = nubus_get_rsrc_str(name, &ent, sizeof(name));
if (ent.type < 1 || ent.type > 5)
ent.type = 5;
pr_debug(" %s: %s\n", vendor_fields[ent.type - 1], name);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, len + 1);
}
return 0;
}
@ -599,6 +651,7 @@ static int __init nubus_get_board_resource(struct nubus_board *board, int slot,
pr_debug(" Board resource 0x%02x:\n", parent->type);
nubus_get_subdir(parent, &dir);
dir.procdir = nubus_proc_add_rsrc_dir(board->procdir, parent, board);
while (nubus_readdir(&dir, &ent) != -1) {
switch (ent.type) {
@ -615,49 +668,62 @@ static int __init nubus_get_board_resource(struct nubus_board *board, int slot,
nbtdata[2] != 0 || nbtdata[3] != 0)
pr_err("Slot %X: sResource is not a board resource!\n",
slot);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, 8);
break;
}
case NUBUS_RESID_NAME:
nubus_get_rsrc_str(board->name, &ent,
{
unsigned int len;
len = nubus_get_rsrc_str(board->name, &ent,
sizeof(board->name));
pr_debug(" name: %s\n", board->name);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, len + 1);
break;
}
case NUBUS_RESID_ICON:
nubus_get_icon(board, &ent);
nubus_get_icon(board, dir.procdir, &ent);
break;
case NUBUS_RESID_BOARDID:
pr_debug(" board id: 0x%x\n", ent.data);
nubus_proc_add_rsrc(dir.procdir, &ent);
break;
case NUBUS_RESID_PRIMARYINIT:
pr_debug(" primary init offset: 0x%06x\n", ent.data);
nubus_proc_add_rsrc(dir.procdir, &ent);
break;
case NUBUS_RESID_VENDORINFO:
nubus_get_vendorinfo(board, &ent);
nubus_get_vendorinfo(board, dir.procdir, &ent);
break;
case NUBUS_RESID_FLAGS:
pr_debug(" flags: 0x%06x\n", ent.data);
nubus_proc_add_rsrc(dir.procdir, &ent);
break;
case NUBUS_RESID_HWDEVID:
pr_debug(" hwdevid: 0x%06x\n", ent.data);
nubus_proc_add_rsrc(dir.procdir, &ent);
break;
case NUBUS_RESID_SECONDINIT:
pr_debug(" secondary init offset: 0x%06x\n",
ent.data);
nubus_proc_add_rsrc(dir.procdir, &ent);
break;
/* WTF isn't this in the functional resources? */
case NUBUS_RESID_VIDNAMES:
pr_debug(" vidnames directory offset: 0x%06x\n",
ent.data);
nubus_get_block_rsrc_dir(board, &ent);
nubus_get_block_rsrc_dir(board, dir.procdir, &ent);
break;
/* Same goes for this */
case NUBUS_RESID_VIDMODES:
pr_debug(" video mode parameter directory offset: 0x%06x\n",
ent.data);
nubus_proc_add_rsrc(dir.procdir, &ent);
break;
default:
pr_debug(" unknown resource 0x%02x, data 0x%06x\n",
ent.type, ent.data);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, 0);
}
}
return 0;
@ -748,6 +814,8 @@ static struct nubus_board * __init nubus_add_board(int slot, int bytelanes)
if (ent.type < 1 || ent.type > 127)
pr_warn("Slot %X: Board resource ID is invalid!\n", slot);
board->procdir = nubus_proc_add_board(board);
nubus_get_board_resource(board, slot, &ent);
while (nubus_readdir(&dir, &ent) != -1) {
@ -835,8 +903,8 @@ static int __init nubus_init(void)
if (!MACH_IS_MAC)
return 0;
nubus_scan_bus();
nubus_proc_init();
nubus_scan_bus();
return 0;
}

220
drivers/nubus/proc.c
View File

@ -11,24 +11,28 @@
structure in /proc analogous to the structure of the NuBus ROM
resources.
Therefore each NuBus device is in fact a directory, which may in
turn contain subdirectories. The "files" correspond to NuBus
resource records. For those types of records which we know how to
convert to formats that are meaningful to userspace (mostly just
icons) these files will provide "cooked" data. Otherwise they will
simply provide raw access (read-only of course) to the ROM. */
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)
{
@ -61,96 +65,141 @@ static const struct file_operations nubus_devices_proc_fops = {
static struct proc_dir_entry *proc_bus_nubus_dir;
static const struct file_operations nubus_proc_subdir_fops = {
#warning Need to set some I/O handlers here
/*
* /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);
}
/* The PDE private data for any directory under /proc/bus/nubus/x/
* is the bytelanes value for the board in slot x.
*/
struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent,
struct nubus_board *board)
{
char name[9];
int lanes = board->lanes;
if (!procdir)
return NULL;
snprintf(name, sizeof(name), "%x", ent->type);
return proc_mkdir_data(name, 0555, procdir, (void *)lanes);
}
/* The PDE private data for a file under /proc/bus/nubus/x/ is a pointer to
* an instance of the following structure, which gives the location and size
* of the resource data in the slot ROM. For slot resources which hold only a
* small integer, this integer value is stored directly and size is set to 0.
* A NULL private data pointer indicates an unrecognized resource.
*/
struct nubus_proc_pde_data {
unsigned char *res_ptr;
unsigned int res_size;
};
static void nubus_proc_subdir(struct nubus_dev* dev,
struct proc_dir_entry* parent,
struct nubus_dir* dir)
static struct nubus_proc_pde_data *
nubus_proc_alloc_pde_data(unsigned char *ptr, unsigned int size)
{
struct nubus_dirent ent;
struct nubus_proc_pde_data *pde_data;
/* Some of these are directories, others aren't */
while (nubus_readdir(dir, &ent) != -1) {
char name[9];
struct proc_dir_entry* e;
pde_data = kmalloc(sizeof(*pde_data), GFP_KERNEL);
if (!pde_data)
return NULL;
snprintf(name, sizeof(name), "%x", ent.type);
e = proc_create(name, S_IFREG | S_IRUGO | S_IWUSR, parent,
&nubus_proc_subdir_fops);
if (!e)
return;
}
pde_data->res_ptr = ptr;
pde_data->res_size = size;
return pde_data;
}
/* Can't do this recursively since the root directory is structured
somewhat differently from the subdirectories */
static void nubus_proc_populate(struct nubus_dev* dev,
struct proc_dir_entry* parent,
struct nubus_dir* root)
static int nubus_proc_rsrc_show(struct seq_file *m, void *v)
{
struct inode *inode = m->private;
struct nubus_proc_pde_data *pde_data;
pde_data = PDE_DATA(inode);
if (!pde_data)
return 0;
if (pde_data->res_size > m->size)
return -EFBIG;
if (pde_data->res_size) {
int lanes = (int)proc_get_parent_data(inode);
struct nubus_dirent ent;
/* We know these are all directories (board resource + one or
more functional resources) */
while (nubus_readdir(root, &ent) != -1) {
char name[9];
struct proc_dir_entry* e;
struct nubus_dir dir;
if (!lanes)
return 0;
snprintf(name, sizeof(name), "%x", ent.type);
e = proc_mkdir(name, parent);
if (!e) return;
/* And descend */
if (nubus_get_subdir(&ent, &dir) == -1) {
/* This shouldn't happen */
printk(KERN_ERR "NuBus root directory node %x:%x has no subdir!\n",
dev->board->slot, ent.type);
continue;
ent.mask = lanes;
ent.base = pde_data->res_ptr;
ent.data = 0;
nubus_seq_write_rsrc_mem(m, &ent, pde_data->res_size);
} else {
nubus_proc_subdir(dev, e, &dir);
}
unsigned int data = (unsigned int)pde_data->res_ptr;
seq_putc(m, data >> 16);
seq_putc(m, data >> 8);
seq_putc(m, data >> 0);
}
return 0;
}
int nubus_proc_attach_device(struct nubus_dev *dev)
static int nubus_proc_rsrc_open(struct inode *inode, struct file *file)
{
struct proc_dir_entry *e;
struct nubus_dir root;
char name[9];
if (dev == NULL) {
printk(KERN_ERR
"NULL pointer in nubus_proc_attach_device, shoot the programmer!\n");
return -1;
}
if (dev->board == NULL) {
printk(KERN_ERR
"NULL pointer in nubus_proc_attach_device, shoot the programmer!\n");
printk("dev = %p, dev->board = %p\n", dev, dev->board);
return -1;
}
if (dev->board->procdir)
return 0;
/* Create a directory */
snprintf(name, sizeof(name), "%x", dev->board->slot);
e = proc_mkdir(name, proc_bus_nubus_dir);
dev->board->procdir = e;
if (!e)
return -ENOMEM;
/* Now recursively populate it with files */
nubus_get_root_dir(dev->board, &root);
nubus_proc_populate(dev, e, &root);
return 0;
return single_open(file, nubus_proc_rsrc_show, inode);
}
static const struct file_operations nubus_proc_rsrc_fops = {
.open = nubus_proc_rsrc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent,
unsigned int size)
{
char name[9];
struct nubus_proc_pde_data *pde_data;
if (!procdir)
return;
snprintf(name, sizeof(name), "%x", ent->type);
if (size)
pde_data = nubus_proc_alloc_pde_data(nubus_dirptr(ent), size);
else
pde_data = NULL;
proc_create_data(name, S_IFREG | 0444, procdir,
&nubus_proc_rsrc_fops, pde_data);
}
void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
char name[9];
unsigned char *data = (unsigned char *)ent->data;
if (!procdir)
return;
snprintf(name, sizeof(name), "%x", ent->type);
proc_create_data(name, S_IFREG | 0444, procdir,
&nubus_proc_rsrc_fops,
nubus_proc_alloc_pde_data(data, 0));
}
EXPORT_SYMBOL(nubus_proc_attach_device);
/*
* /proc/nubus stuff
@ -219,18 +268,11 @@ static const struct file_operations nubus_proc_fops = {
.release = seq_release,
};
void __init proc_bus_nubus_add_devices(void)
{
struct nubus_dev *dev;
for(dev = nubus_devices; dev; dev = dev->next)
nubus_proc_attach_device(dev);
}
void __init nubus_proc_init(void)
{
proc_create("nubus", 0, NULL, &nubus_proc_fops);
proc_bus_nubus_dir = proc_mkdir("bus/nubus", NULL);
if (!proc_bus_nubus_dir)
return;
proc_create("devices", 0, proc_bus_nubus_dir, &nubus_devices_proc_fops);
proc_bus_nubus_add_devices();
}

37
include/linux/nubus.h
View File

@ -13,11 +13,15 @@
#include <asm/nubus.h>
#include <uapi/linux/nubus.h>
struct proc_dir_entry;
struct seq_file;
struct nubus_dir {
unsigned char *base;
unsigned char *ptr;
int done;
int mask;
struct proc_dir_entry *procdir;
};
struct nubus_dirent {
@ -84,12 +88,33 @@ extern struct nubus_board *nubus_boards;
/* Generic NuBus interface functions, modelled after the PCI interface */
#ifdef CONFIG_PROC_FS
extern void nubus_proc_init(void);
void nubus_proc_init(void);
struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board);
struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent,
struct nubus_board *board);
void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent,
unsigned int size);
void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent);
#else
static inline void nubus_proc_init(void) {}
static inline
struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board)
{ return NULL; }
static inline
struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent,
struct nubus_board *board)
{ return NULL; }
static inline void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent,
unsigned int size) {}
static inline void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent) {}
#endif
int nubus_proc_attach_device(struct nubus_dev *dev);
/* If we need more precision we can add some more of these */
struct nubus_dev *nubus_find_type(unsigned short category,
unsigned short type,
@ -125,8 +150,12 @@ int nubus_get_subdir(const struct nubus_dirent *ent,
struct nubus_dir *dir);
void nubus_get_rsrc_mem(void *dest, const struct nubus_dirent *dirent,
unsigned int len);
void nubus_get_rsrc_str(char *dest, const struct nubus_dirent *dirent,
unsigned int maxlen);
unsigned int nubus_get_rsrc_str(char *dest, const struct nubus_dirent *dirent,
unsigned int len);
void nubus_seq_write_rsrc_mem(struct seq_file *m,
const struct nubus_dirent *dirent,
unsigned int len);
unsigned char *nubus_dirptr(const struct nubus_dirent *nd);
/* Returns a pointer to the "standard" slot space. */
static inline void *nubus_slot_addr(int slot)