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Handle disk partitioning

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This commit is contained in:
Kamil Kowalczyk
2025-10-19 22:29:19 +02:00
parent 68e0e8848d
commit 01da863b8b
21 changed files with 300 additions and 85 deletions
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57
kernel/storedev/storedev.c
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@ -24,23 +24,10 @@ void storedev_init(void) {
ata_probe();
}
size_t ramsd_counter = 0;
void storedev_register_dev_entry(StoreDev *sd, int32_t sdtype) {
char key[20];
if (sdtype == STOREDEV_RAMSD) {
ksprintf(key, "ramsd-%zu", ramsd_counter++);
} else if (sdtype == STOREDEV_ATASD) {
ksprintf(key, "atasd-ch%d-%c",
sd->sd.atasd.iobase == 0x1F0 ? 0 : 1,
sd->sd.atasd.devno == 0x00 ? 'M' : 'S'
);
}
void storedev_register_dev_entry(StoreDev *sd, char *name, int32_t sdtype) {
spinlock_acquire(&DEVTABLE.spinlock);
Dev *dev = NULL;
HSHTB_ALLOC(DEVTABLE.devs, ident, key, dev);
HSHTB_ALLOC(DEVTABLE.devs, ident, name, dev);
spinlock_release(&DEVTABLE.spinlock);
if (dev == NULL) {
@ -58,7 +45,7 @@ void storedev_unregister_dev_entry(Dev *dev) {
spinlock_release(&DEVTABLE.spinlock);
}
StoreDev *storedev_create(int32_t sdtype, void *extra) {
StoreDev *storedev_create(int32_t sdtype, char *name, void *extra) {
StoreDev *sd = dlmalloc(sizeof(*sd));
if (sd == NULL) {
return NULL;
@ -67,28 +54,36 @@ StoreDev *storedev_create(int32_t sdtype, void *extra) {
spinlock_acquire(&STOREDEV_LIST.spinlock);
sd->_magic = STOREDEV_MAGIC;
spinlock_init(&sd->spinlock);
switch (sdtype) {
case STOREDEV_RAMSD: {
spinlock_init(&sd->spinlock);
sd->sdtype = STOREDEV_RAMSD;
sd->init = &ramsd_init;
sd->cleanup = &ramsd_cleanup;
sd->read = &ramsd_read;
sd->write = &ramsd_write;
sd->capacity = &ramsd_capacity;
sd->sdtype = STOREDEV_RAMSD;
sd->init = &ramsd_init;
sd->cleanup = &ramsd_cleanup;
sd->read = &ramsd_read;
sd->write = &ramsd_write;
sd->capacity = &ramsd_capacity;
sd->sectorsize = STOREDEV_RAMSD_SECTORSIZE;
} break;
case STOREDEV_ATASD: {
spinlock_init(&sd->spinlock);
sd->sdtype = STOREDEV_ATASD;
sd->init = &atasd_init;
sd->cleanup = &atasd_cleanup;
sd->read = &atasd_read;
sd->write = &atasd_write;
sd->capacity = &atasd_capacity;
sd->sdtype = STOREDEV_ATASD;
sd->init = &atasd_init;
sd->cleanup = &atasd_cleanup;
sd->read = &atasd_read;
sd->write = &atasd_write;
sd->capacity = &atasd_capacity;
sd->sectorsize = STOREDEV_ATASD_SECTORSIZE;
} break;
case STOREDEV_PARTSD: {
sd->sdtype = STOREDEV_PARTSD;
sd->init = &partsd_init;
sd->cleanup = &partsd_cleanup;
sd->read = &partsd_read;
sd->write = &partsd_write;
sd->capacity = &partsd_capacity;
sd->sectorsize = 0; // lazy
} break;
default:
spinlock_release(&STOREDEV_LIST.spinlock);
return NULL;
@ -102,7 +97,7 @@ StoreDev *storedev_create(int32_t sdtype, void *extra) {
LL_APPEND(STOREDEV_LIST.head, sd);
spinlock_release(&STOREDEV_LIST.spinlock);
storedev_register_dev_entry(sd, sdtype);
storedev_register_dev_entry(sd, name, sdtype);
return sd;
}