[PATCH 11/14] nubus: Repopulate /proc/bus/nubus/s/

Finn Thain
2017-11-11T06:14:48Z

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>
---
drivers/nubus/nubus.c | 117 +++++++++++++++++++++++++++-------
drivers/nubus/proc.c | 170 +++++++++++++++++++++++++++++++++++++++++++++++---
include/linux/nubus.h | 35 ++++++++++-
3 files changed, 288 insertions(+), 34 deletions(-)

diff --git a/drivers/nubus/nubus.c b/drivers/nubus/nubus.c
index ab3400241bf7..16cbdd45dbbc 100644
--- a/drivers/nubus/nubus.c
+++ b/drivers/nubus/nubus.c
@@ -14,6 +14,7 @@
#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>
@@ -172,8 +173,8 @@ 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 len)
+unsigned int nubus_get_rsrc_str(char *dest, const struct nubus_dirent *dirent,
+ unsigned int len)
{
char *t = dest;
unsigned char *p = nubus_dirptr(dirent);
@@ -188,9 +189,34 @@ 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));
+}
+EXPORT_SYMBOL(nubus_seq_write_rsrc_mem);
+
int nubus_get_root_dir(const struct nubus_board *board,
struct nubus_dir *dir)
{
@@ -325,35 +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) {
@@ -365,37 +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) {
@@ -405,16 +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) {
@@ -425,6 +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:
@@ -434,31 +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;
}
@@ -473,6 +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)
@@ -494,14 +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);
break;
}
case NUBUS_RESID_DRVRDIR:
@@ -510,7 +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:
@@ -522,6 +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:
@@ -531,18 +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);
}
}

@@ -551,7 +598,8 @@ nubus_get_functional_resource(struct nubus_board *board, int slot,

/* This is *really* cool. */
static int __init nubus_get_icon(struct nubus_board *board,
- const struct nubus_dirent *ent)
+ struct proc_dir_entry *procdir,
+ const struct nubus_dirent *ent)
{
/* Should be 32x32 if my memory serves me correctly */
u32 icon[32];
@@ -563,12 +611,14 @@ 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,
- const struct nubus_dirent *parent)
+ struct proc_dir_entry *procdir,
+ const struct nubus_dirent *parent)
{
struct nubus_dir dir;
struct nubus_dirent ent;
@@ -577,15 +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);
}
return 0;
}
@@ -598,6 +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) {
@@ -613,48 +667,61 @@ static int __init nubus_get_board_resource(struct nubus_board *board, int slot,
if (nbtdata[0] != 1 || nbtdata[1] != 0 ||
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,
- sizeof(board->name));
+ {
+ 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);
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;
@@ -745,6 +812,8 @@ 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 +904,8 @@ static int __init nubus_init(void)
if (!MACH_IS_MAC)
return 0;

- nubus_scan_bus();
nubus_proc_init();
+ nubus_scan_bus();
return 0;
}

diff --git a/drivers/nubus/proc.c b/drivers/nubus/proc.c
index 88f6a880adb4..5877f77040f6 100644
--- a/drivers/nubus/proc.c
+++ b/drivers/nubus/proc.c
@@ -10,24 +10,28 @@
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)
{
@@ -61,6 +65,156 @@ static const struct file_operations nubus_devices_proc_fops = {
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);
+}
+
+/* The PDE private data for every directory under /proc/bus/nubus/x/
+ * is a pointer to the struct nubus_board for 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];
+
+ if (!procdir)
+ return NULL;
+ snprintf(name, sizeof(name), "%x", ent->type);
+ return proc_mkdir_data(name, S_IRUGO | S_IXUGO, procdir, board);
+}
+
+/* The PDE private data for files under /proc/bus/nubus/x/ is a pointer to
+ * an instance of the following structure, which gives the location and size
+ * of the data belonging to a slot resource.
+ */
+
+struct nubus_proc_pde_data {
+ unsigned char *ptr;
+ unsigned int size;
+};
+
+static struct
+nubus_proc_pde_data *nubus_proc_alloc_pde_data(const struct nubus_dirent *ent,
+ unsigned int size)
+{
+ struct nubus_dir dir;
+ struct nubus_proc_pde_data *data;
+
+ data = kmalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return NULL;
+
+ data->size = size;
+ if (!size)
+ return data;
+
+ nubus_get_subdir(ent, &dir);
+ data->ptr = dir.ptr;
+ return data;
+}
+
+static int nubus_proc_sized_rsrc_show(struct seq_file *m, void *v)
+{
+ struct inode *inode = m->private;
+ struct nubus_board *board;
+ struct nubus_proc_pde_data *data;
+ struct nubus_dirent ent;
+
+ board = proc_get_parent_data(inode);
+ if (!board)
+ return 0;
+
+ data = PDE_DATA(inode);
+ if (!data || !data->size)
+ return 0;
+
+ if (data->size > m->size)
+ return -EFBIG;
+
+ ent.mask = board->lanes;
+ ent.base = data->ptr;
+ ent.data = 0;
+ nubus_seq_write_rsrc_mem(m, &ent, data->size);
+ return 0;
+}
+
+static int nubus_proc_sized_rsrc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, nubus_proc_sized_rsrc_show, inode);
+}
+
+static const struct file_operations nubus_proc_sized_rsrc_fops = {
+ .open = nubus_proc_sized_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];
+
+ if (!procdir)
+ return;
+ snprintf(name, sizeof(name), "%x", ent->type);
+ proc_create_data(name, S_IFREG | S_IRUGO, procdir,
+ &nubus_proc_sized_rsrc_fops,
+ nubus_proc_alloc_pde_data(ent, size));
+}
+
+/* Many slot resources hold only a small integer. For such resources the
+ * PDE private data is this integer value (no size value is needed).
+ */
+
+static int nubus_proc_rsrc_show(struct seq_file *m, void *v)
+{
+ struct inode *inode = m->private;
+ unsigned int data = (unsigned int)PDE_DATA(inode);
+
+ seq_putc(m, data >> 16);
+ seq_putc(m, data >> 8);
+ seq_putc(m, data >> 0);
+ return 0;
+}
+
+static int nubus_proc_rsrc_open(struct inode *inode, struct file *file)
+{
+ 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(struct proc_dir_entry *procdir,
+ const struct nubus_dirent *ent)
+{
+ char name[9];
+
+ if (!procdir)
+ return;
+ snprintf(name, sizeof(name), "%x", ent->type);
+ proc_create_data(name, S_IFREG | S_IRUGO, procdir,
+ &nubus_proc_rsrc_fops, (void *)ent->data);
+}
+
+/*
* /proc/nubus stuff
*/
static int nubus_proc_show(struct seq_file *m, void *v)
@@ -131,5 +285,7 @@ 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);
}
diff --git a/include/linux/nubus.h b/include/linux/nubus.h
index 5f6d0eda8673..44576613d4a0 100644
--- a/include/linux/nubus.h
+++ b/include/linux/nubus.h
@@ -12,11 +12,15 @@
#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 {
@@ -83,9 +87,31 @@ 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

/* If we need more precision we can add some more of these */
@@ -123,8 +149,11 @@ 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 maxlen);
+void nubus_seq_write_rsrc_mem(struct seq_file *m,
+ const struct nubus_dirent *dirent,
+ unsigned int len);

/* Returns a pointer to the "standard" slot space. */
static inline void *nubus_slot_addr(int slot)
--
2.13.6