mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-13 23:34:05 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
534 lines
12 KiB
C
534 lines
12 KiB
C
/* Sysctl interface for parport devices.
|
|
*
|
|
* Authors: David Campbell <campbell@torque.net>
|
|
* Tim Waugh <tim@cyberelk.demon.co.uk>
|
|
* Philip Blundell <philb@gnu.org>
|
|
* Andrea Arcangeli
|
|
* Riccardo Facchetti <fizban@tin.it>
|
|
*
|
|
* based on work by Grant Guenther <grant@torque.net>
|
|
* and Philip Blundell
|
|
*
|
|
* Cleaned up include files - Russell King <linux@arm.uk.linux.org>
|
|
*/
|
|
|
|
#include <linux/string.h>
|
|
#include <linux/config.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/parport.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/sysctl.h>
|
|
|
|
#include <asm/uaccess.h>
|
|
|
|
#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
|
|
|
|
#define PARPORT_MIN_TIMESLICE_VALUE 1ul
|
|
#define PARPORT_MAX_TIMESLICE_VALUE ((unsigned long) HZ)
|
|
#define PARPORT_MIN_SPINTIME_VALUE 1
|
|
#define PARPORT_MAX_SPINTIME_VALUE 1000
|
|
|
|
static int do_active_device(ctl_table *table, int write, struct file *filp,
|
|
void __user *result, size_t *lenp, loff_t *ppos)
|
|
{
|
|
struct parport *port = (struct parport *)table->extra1;
|
|
char buffer[256];
|
|
struct pardevice *dev;
|
|
int len = 0;
|
|
|
|
if (write) /* can't happen anyway */
|
|
return -EACCES;
|
|
|
|
if (*ppos) {
|
|
*lenp = 0;
|
|
return 0;
|
|
}
|
|
|
|
for (dev = port->devices; dev ; dev = dev->next) {
|
|
if(dev == port->cad) {
|
|
len += sprintf(buffer, "%s\n", dev->name);
|
|
}
|
|
}
|
|
|
|
if(!len) {
|
|
len += sprintf(buffer, "%s\n", "none");
|
|
}
|
|
|
|
if (len > *lenp)
|
|
len = *lenp;
|
|
else
|
|
*lenp = len;
|
|
|
|
*ppos += len;
|
|
|
|
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PARPORT_1284
|
|
static int do_autoprobe(ctl_table *table, int write, struct file *filp,
|
|
void __user *result, size_t *lenp, loff_t *ppos)
|
|
{
|
|
struct parport_device_info *info = table->extra2;
|
|
const char *str;
|
|
char buffer[256];
|
|
int len = 0;
|
|
|
|
if (write) /* permissions stop this */
|
|
return -EACCES;
|
|
|
|
if (*ppos) {
|
|
*lenp = 0;
|
|
return 0;
|
|
}
|
|
|
|
if ((str = info->class_name) != NULL)
|
|
len += sprintf (buffer + len, "CLASS:%s;\n", str);
|
|
|
|
if ((str = info->model) != NULL)
|
|
len += sprintf (buffer + len, "MODEL:%s;\n", str);
|
|
|
|
if ((str = info->mfr) != NULL)
|
|
len += sprintf (buffer + len, "MANUFACTURER:%s;\n", str);
|
|
|
|
if ((str = info->description) != NULL)
|
|
len += sprintf (buffer + len, "DESCRIPTION:%s;\n", str);
|
|
|
|
if ((str = info->cmdset) != NULL)
|
|
len += sprintf (buffer + len, "COMMAND SET:%s;\n", str);
|
|
|
|
if (len > *lenp)
|
|
len = *lenp;
|
|
else
|
|
*lenp = len;
|
|
|
|
*ppos += len;
|
|
|
|
return copy_to_user (result, buffer, len) ? -EFAULT : 0;
|
|
}
|
|
#endif /* IEEE1284.3 support. */
|
|
|
|
static int do_hardware_base_addr (ctl_table *table, int write,
|
|
struct file *filp, void __user *result,
|
|
size_t *lenp, loff_t *ppos)
|
|
{
|
|
struct parport *port = (struct parport *)table->extra1;
|
|
char buffer[20];
|
|
int len = 0;
|
|
|
|
if (*ppos) {
|
|
*lenp = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (write) /* permissions prevent this anyway */
|
|
return -EACCES;
|
|
|
|
len += sprintf (buffer, "%lu\t%lu\n", port->base, port->base_hi);
|
|
|
|
if (len > *lenp)
|
|
len = *lenp;
|
|
else
|
|
*lenp = len;
|
|
|
|
*ppos += len;
|
|
|
|
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
|
|
}
|
|
|
|
static int do_hardware_irq (ctl_table *table, int write,
|
|
struct file *filp, void __user *result,
|
|
size_t *lenp, loff_t *ppos)
|
|
{
|
|
struct parport *port = (struct parport *)table->extra1;
|
|
char buffer[20];
|
|
int len = 0;
|
|
|
|
if (*ppos) {
|
|
*lenp = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (write) /* permissions prevent this anyway */
|
|
return -EACCES;
|
|
|
|
len += sprintf (buffer, "%d\n", port->irq);
|
|
|
|
if (len > *lenp)
|
|
len = *lenp;
|
|
else
|
|
*lenp = len;
|
|
|
|
*ppos += len;
|
|
|
|
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
|
|
}
|
|
|
|
static int do_hardware_dma (ctl_table *table, int write,
|
|
struct file *filp, void __user *result,
|
|
size_t *lenp, loff_t *ppos)
|
|
{
|
|
struct parport *port = (struct parport *)table->extra1;
|
|
char buffer[20];
|
|
int len = 0;
|
|
|
|
if (*ppos) {
|
|
*lenp = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (write) /* permissions prevent this anyway */
|
|
return -EACCES;
|
|
|
|
len += sprintf (buffer, "%d\n", port->dma);
|
|
|
|
if (len > *lenp)
|
|
len = *lenp;
|
|
else
|
|
*lenp = len;
|
|
|
|
*ppos += len;
|
|
|
|
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
|
|
}
|
|
|
|
static int do_hardware_modes (ctl_table *table, int write,
|
|
struct file *filp, void __user *result,
|
|
size_t *lenp, loff_t *ppos)
|
|
{
|
|
struct parport *port = (struct parport *)table->extra1;
|
|
char buffer[40];
|
|
int len = 0;
|
|
|
|
if (*ppos) {
|
|
*lenp = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (write) /* permissions prevent this anyway */
|
|
return -EACCES;
|
|
|
|
{
|
|
#define printmode(x) {if(port->modes&PARPORT_MODE_##x){len+=sprintf(buffer+len,"%s%s",f?",":"",#x);f++;}}
|
|
int f = 0;
|
|
printmode(PCSPP);
|
|
printmode(TRISTATE);
|
|
printmode(COMPAT);
|
|
printmode(EPP);
|
|
printmode(ECP);
|
|
printmode(DMA);
|
|
#undef printmode
|
|
}
|
|
buffer[len++] = '\n';
|
|
|
|
if (len > *lenp)
|
|
len = *lenp;
|
|
else
|
|
*lenp = len;
|
|
|
|
*ppos += len;
|
|
|
|
return copy_to_user(result, buffer, len) ? -EFAULT : 0;
|
|
}
|
|
|
|
#define PARPORT_PORT_DIR(child) { 0, NULL, NULL, 0, 0555, child }
|
|
#define PARPORT_PARPORT_DIR(child) { DEV_PARPORT, "parport", \
|
|
NULL, 0, 0555, child }
|
|
#define PARPORT_DEV_DIR(child) { CTL_DEV, "dev", NULL, 0, 0555, child }
|
|
#define PARPORT_DEVICES_ROOT_DIR { DEV_PARPORT_DEVICES, "devices", \
|
|
NULL, 0, 0555, NULL }
|
|
|
|
static const unsigned long parport_min_timeslice_value =
|
|
PARPORT_MIN_TIMESLICE_VALUE;
|
|
|
|
static const unsigned long parport_max_timeslice_value =
|
|
PARPORT_MAX_TIMESLICE_VALUE;
|
|
|
|
static const int parport_min_spintime_value =
|
|
PARPORT_MIN_SPINTIME_VALUE;
|
|
|
|
static const int parport_max_spintime_value =
|
|
PARPORT_MAX_SPINTIME_VALUE;
|
|
|
|
|
|
struct parport_sysctl_table {
|
|
struct ctl_table_header *sysctl_header;
|
|
ctl_table vars[12];
|
|
ctl_table device_dir[2];
|
|
ctl_table port_dir[2];
|
|
ctl_table parport_dir[2];
|
|
ctl_table dev_dir[2];
|
|
};
|
|
|
|
static const struct parport_sysctl_table parport_sysctl_template = {
|
|
NULL,
|
|
{
|
|
{ DEV_PARPORT_SPINTIME, "spintime",
|
|
NULL, sizeof(int), 0644, NULL,
|
|
&proc_dointvec_minmax, NULL, NULL,
|
|
(void*) &parport_min_spintime_value,
|
|
(void*) &parport_max_spintime_value },
|
|
{ DEV_PARPORT_BASE_ADDR, "base-addr",
|
|
NULL, 0, 0444, NULL,
|
|
&do_hardware_base_addr },
|
|
{ DEV_PARPORT_IRQ, "irq",
|
|
NULL, 0, 0444, NULL,
|
|
&do_hardware_irq },
|
|
{ DEV_PARPORT_DMA, "dma",
|
|
NULL, 0, 0444, NULL,
|
|
&do_hardware_dma },
|
|
{ DEV_PARPORT_MODES, "modes",
|
|
NULL, 0, 0444, NULL,
|
|
&do_hardware_modes },
|
|
PARPORT_DEVICES_ROOT_DIR,
|
|
#ifdef CONFIG_PARPORT_1284
|
|
{ DEV_PARPORT_AUTOPROBE, "autoprobe",
|
|
NULL, 0, 0444, NULL,
|
|
&do_autoprobe },
|
|
{ DEV_PARPORT_AUTOPROBE + 1, "autoprobe0",
|
|
NULL, 0, 0444, NULL,
|
|
&do_autoprobe },
|
|
{ DEV_PARPORT_AUTOPROBE + 2, "autoprobe1",
|
|
NULL, 0, 0444, NULL,
|
|
&do_autoprobe },
|
|
{ DEV_PARPORT_AUTOPROBE + 3, "autoprobe2",
|
|
NULL, 0, 0444, NULL,
|
|
&do_autoprobe },
|
|
{ DEV_PARPORT_AUTOPROBE + 4, "autoprobe3",
|
|
NULL, 0, 0444, NULL,
|
|
&do_autoprobe },
|
|
#endif /* IEEE 1284 support */
|
|
{0}
|
|
},
|
|
{ {DEV_PARPORT_DEVICES_ACTIVE, "active", NULL, 0, 0444, NULL,
|
|
&do_active_device }, {0}},
|
|
{ PARPORT_PORT_DIR(NULL), {0}},
|
|
{ PARPORT_PARPORT_DIR(NULL), {0}},
|
|
{ PARPORT_DEV_DIR(NULL), {0}}
|
|
};
|
|
|
|
struct parport_device_sysctl_table
|
|
{
|
|
struct ctl_table_header *sysctl_header;
|
|
ctl_table vars[2];
|
|
ctl_table device_dir[2];
|
|
ctl_table devices_root_dir[2];
|
|
ctl_table port_dir[2];
|
|
ctl_table parport_dir[2];
|
|
ctl_table dev_dir[2];
|
|
};
|
|
|
|
static const struct parport_device_sysctl_table
|
|
parport_device_sysctl_template = {
|
|
NULL,
|
|
{
|
|
{ DEV_PARPORT_DEVICE_TIMESLICE, "timeslice",
|
|
NULL, sizeof(int), 0644, NULL,
|
|
&proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
|
|
(void*) &parport_min_timeslice_value,
|
|
(void*) &parport_max_timeslice_value },
|
|
},
|
|
{ {0, NULL, NULL, 0, 0555, NULL}, {0}},
|
|
{ PARPORT_DEVICES_ROOT_DIR, {0}},
|
|
{ PARPORT_PORT_DIR(NULL), {0}},
|
|
{ PARPORT_PARPORT_DIR(NULL), {0}},
|
|
{ PARPORT_DEV_DIR(NULL), {0}}
|
|
};
|
|
|
|
struct parport_default_sysctl_table
|
|
{
|
|
struct ctl_table_header *sysctl_header;
|
|
ctl_table vars[3];
|
|
ctl_table default_dir[2];
|
|
ctl_table parport_dir[2];
|
|
ctl_table dev_dir[2];
|
|
};
|
|
|
|
extern unsigned long parport_default_timeslice;
|
|
extern int parport_default_spintime;
|
|
|
|
static struct parport_default_sysctl_table
|
|
parport_default_sysctl_table = {
|
|
NULL,
|
|
{
|
|
{ DEV_PARPORT_DEFAULT_TIMESLICE, "timeslice",
|
|
&parport_default_timeslice,
|
|
sizeof(parport_default_timeslice), 0644, NULL,
|
|
&proc_doulongvec_ms_jiffies_minmax, NULL, NULL,
|
|
(void*) &parport_min_timeslice_value,
|
|
(void*) &parport_max_timeslice_value },
|
|
{ DEV_PARPORT_DEFAULT_SPINTIME, "spintime",
|
|
&parport_default_spintime,
|
|
sizeof(parport_default_spintime), 0644, NULL,
|
|
&proc_dointvec_minmax, NULL, NULL,
|
|
(void*) &parport_min_spintime_value,
|
|
(void*) &parport_max_spintime_value },
|
|
{0}
|
|
},
|
|
{ { DEV_PARPORT_DEFAULT, "default", NULL, 0, 0555,
|
|
parport_default_sysctl_table.vars },{0}},
|
|
{
|
|
PARPORT_PARPORT_DIR(parport_default_sysctl_table.default_dir),
|
|
{0}},
|
|
{ PARPORT_DEV_DIR(parport_default_sysctl_table.parport_dir), {0}}
|
|
};
|
|
|
|
|
|
int parport_proc_register(struct parport *port)
|
|
{
|
|
struct parport_sysctl_table *t;
|
|
int i;
|
|
|
|
t = kmalloc(sizeof(*t), GFP_KERNEL);
|
|
if (t == NULL)
|
|
return -ENOMEM;
|
|
memcpy(t, &parport_sysctl_template, sizeof(*t));
|
|
|
|
t->device_dir[0].extra1 = port;
|
|
|
|
for (i = 0; i < 8; i++)
|
|
t->vars[i].extra1 = port;
|
|
|
|
t->vars[0].data = &port->spintime;
|
|
t->vars[5].child = t->device_dir;
|
|
|
|
for (i = 0; i < 5; i++)
|
|
t->vars[6 + i].extra2 = &port->probe_info[i];
|
|
|
|
t->port_dir[0].procname = port->name;
|
|
t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
|
|
|
|
t->port_dir[0].child = t->vars;
|
|
t->parport_dir[0].child = t->port_dir;
|
|
t->dev_dir[0].child = t->parport_dir;
|
|
|
|
t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
|
|
if (t->sysctl_header == NULL) {
|
|
kfree(t);
|
|
t = NULL;
|
|
}
|
|
port->sysctl_table = t;
|
|
return 0;
|
|
}
|
|
|
|
int parport_proc_unregister(struct parport *port)
|
|
{
|
|
if (port->sysctl_table) {
|
|
struct parport_sysctl_table *t = port->sysctl_table;
|
|
port->sysctl_table = NULL;
|
|
unregister_sysctl_table(t->sysctl_header);
|
|
kfree(t);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int parport_device_proc_register(struct pardevice *device)
|
|
{
|
|
struct parport_device_sysctl_table *t;
|
|
struct parport * port = device->port;
|
|
|
|
t = kmalloc(sizeof(*t), GFP_KERNEL);
|
|
if (t == NULL)
|
|
return -ENOMEM;
|
|
memcpy(t, &parport_device_sysctl_template, sizeof(*t));
|
|
|
|
t->dev_dir[0].child = t->parport_dir;
|
|
t->parport_dir[0].child = t->port_dir;
|
|
t->port_dir[0].procname = port->name;
|
|
t->port_dir[0].ctl_name = port->number + 1; /* nb 0 isn't legal here */
|
|
t->port_dir[0].child = t->devices_root_dir;
|
|
t->devices_root_dir[0].child = t->device_dir;
|
|
|
|
#ifdef CONFIG_PARPORT_1284
|
|
|
|
t->device_dir[0].ctl_name =
|
|
parport_device_num(port->number, port->muxport,
|
|
device->daisy)
|
|
+ 1; /* nb 0 isn't legal here */
|
|
|
|
#else /* No IEEE 1284 support */
|
|
|
|
/* parport_device_num isn't available. */
|
|
t->device_dir[0].ctl_name = 1;
|
|
|
|
#endif /* IEEE 1284 support or not */
|
|
|
|
t->device_dir[0].procname = device->name;
|
|
t->device_dir[0].extra1 = device;
|
|
t->device_dir[0].child = t->vars;
|
|
t->vars[0].data = &device->timeslice;
|
|
|
|
t->sysctl_header = register_sysctl_table(t->dev_dir, 0);
|
|
if (t->sysctl_header == NULL) {
|
|
kfree(t);
|
|
t = NULL;
|
|
}
|
|
device->sysctl_table = t;
|
|
return 0;
|
|
}
|
|
|
|
int parport_device_proc_unregister(struct pardevice *device)
|
|
{
|
|
if (device->sysctl_table) {
|
|
struct parport_device_sysctl_table *t = device->sysctl_table;
|
|
device->sysctl_table = NULL;
|
|
unregister_sysctl_table(t->sysctl_header);
|
|
kfree(t);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int __init parport_default_proc_register(void)
|
|
{
|
|
parport_default_sysctl_table.sysctl_header =
|
|
register_sysctl_table(parport_default_sysctl_table.dev_dir, 0);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit parport_default_proc_unregister(void)
|
|
{
|
|
if (parport_default_sysctl_table.sysctl_header) {
|
|
unregister_sysctl_table(parport_default_sysctl_table.
|
|
sysctl_header);
|
|
parport_default_sysctl_table.sysctl_header = NULL;
|
|
}
|
|
}
|
|
|
|
#else /* no sysctl or no procfs*/
|
|
|
|
int parport_proc_register(struct parport *pp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int parport_proc_unregister(struct parport *pp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int parport_device_proc_register(struct pardevice *device)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int parport_device_proc_unregister(struct pardevice *device)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int __init parport_default_proc_register (void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void __exit parport_default_proc_unregister (void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
module_init(parport_default_proc_register)
|
|
module_exit(parport_default_proc_unregister)
|