/*
* Function to create and attach null:
*/
void
devnull_create(void)
{
int result;
struct device *dev;
dev = kmalloc(sizeof(*dev));
if (dev==NULL) {
panic("Could not add null device: out of memory\n");
}
dev->d_open = nullopen;
dev->d_close = nullclose;
dev->d_io = nullio;
dev->d_ioctl = nullioctl;
dev->d_blocks = 0;
dev->d_blocksize = 1;
dev->d_data = NULL;
result = vfs_adddev("null", dev, 0);
if (result) {
panic("Could not add null device: %s\n", strerror(result));
}
}
/*
* Setup routine called by autoconf.c when an lhd is found.
*/
int
config_lhd(struct lhd_softc *lh, int lhdno)
{
char name[32];
/* Figure out what our name is. */
snprintf(name, sizeof(name), "lhd%d", lhdno);
/* Get a pointer to the on-chip buffer. */
lh->lh_buf = bus_map_area(lh->lh_busdata, lh->lh_buspos, LHD_BUFFER);
/* Create the semaphores. */
lh->lh_clear = sem_create("lhd-clear", 1);
if (lh->lh_clear == NULL) {
return ENOMEM;
}
lh->lh_done = sem_create("lhd-done", 0);
if (lh->lh_done == NULL) {
sem_destroy(lh->lh_clear);
lh->lh_clear = NULL;
return ENOMEM;
}
/* Set up the VFS device structure. */
lh->lh_dev.d_ops = &lhd_devops;
lh->lh_dev.d_blocks = bus_read_register(lh->lh_busdata, lh->lh_buspos,
LHD_REG_NSECT);
lh->lh_dev.d_blocksize = LHD_SECTSIZE;
lh->lh_dev.d_data = lh;
/* Add the VFS device structure to the VFS device list. */
return vfs_adddev(name, &lh->lh_dev, 1);
}
static
int
attach_console_to_vfs(struct con_softc *cs)
{
struct device *dev;
int result;
dev = kmalloc(sizeof(*dev));
if (dev==NULL) {
return ENOMEM;
}
dev->d_ops = &console_devops;
dev->d_blocks = 0;
dev->d_blocksize = 1;
dev->d_data = cs;
result = vfs_adddev("con", dev, 0);
if (result) {
kfree(dev);
return result;
}
return 0;
}
/*
* Function to create and attach null:
*/
void
devnull_create(void)
{
int result;
struct device *dev;
dev = kmalloc(sizeof(*dev));
if (dev==NULL) {
panic("Could not add null device: out of memory\n");
}
dev->d_ops = &null_devops;
dev->d_blocks = 0;
dev->d_blocksize = 1;
dev->d_devnumber = 0; /* assigned by vfs_adddev */
dev->d_data = NULL;
result = vfs_adddev("null", dev, 0);
if (result) {
panic("Could not add null device: %s\n", strerror(result));
}
}
