GVSDS/ViperOS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial import of ViperOS

Browse Source
This commit is contained in:
Viper
2026-07-19 12:38:20 +08:00
commit 6813947181
104 changed files with 26710 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
VKernel/Kernel/drivers/fs/fat32/fat32_diskio.py Normal file
View File

@@ -0,0 +1,76 @@
import drivers.storage.ide.ide as ide
import fat32_types as types
import spinlock
import string
import t, c
MAX_DRIVES: t.CDefine = 4
drive_initialized: t.CArray[t.CInt, MAX_DRIVES]
drive_lock: spinlock._spinlock = spinlock._spinlock()
def status(pdrv: t.CUInt8T) -> types.DRESULT:
if pdrv >= MAX_DRIVES: return types.DRESULT.RES_PARERR
if not drive_initialized[pdrv]: return types.DRESULT.RES_NOTRDY
return types.DRESULT.RES_OK
def init(pdrv: t.CUInt8T) -> types.DRESULT:
if pdrv >= MAX_DRIVES: return types.DRESULT.RES_PARERR
drive_lock.lock()
err: t.CInt = ide.init()
if err != 0:
drive_lock.unlock()
return types.DRESULT.RES_NOTRDY
drive_initialized[pdrv] = 1
drive_lock.unlock()
return types.DRESULT.RES_OK
def read(pdrv: t.CUInt8T, buff: t.CUInt8T | t.CPtr, sector: t.CUInt32T, count: t.CUInt32T) -> types.DRESULT:
if pdrv >= MAX_DRIVES: return types.DRESULT.RES_PARERR
if not drive_initialized[pdrv]: return types.DRESULT.RES_NOTRDY
drive_lock.lock()
i: t.CUInt32T
for i in range(count):
rd_res: t.CInt = ide.readSector(sector + i, buff + (i * 512))
if rd_res != 0:
drive_lock.unlock()
return types.DRESULT.RES_ERROR
drive_lock.unlock()
return types.DRESULT.RES_OK
def write(pdrv: t.CUInt8T, buff: t.CConst | t.CUInt8T | t.CPtr, sector: t.CUInt32T, count: t.CUInt32T) -> types.DRESULT:
if pdrv >= MAX_DRIVES: return types.DRESULT.RES_PARERR
if not drive_initialized[pdrv]: return types.DRESULT.RES_NOTRDY
drive_lock.lock()
i: t.CUInt32T
for i in range(count):
if ide.writeSector(sector + i, buff + (i * 512)) != 0:
drive_lock.unlock()
return types.DRESULT.RES_ERROR
drive_lock.unlock()
return types.DRESULT.RES_OK
def ioctl(pdrv: t.CUInt8T, cmd: t.CUInt8T, buff: t.CVoid | t.CPtr) -> types.DRESULT:
if pdrv >= MAX_DRIVES: return types.DRESULT.RES_PARERR
if not drive_initialized[pdrv]: return types.DRESULT.RES_NOTRDY
match cmd:
case types.GET_SECTOR_COUNT:
disk_size: t.CUInt64T = ide.getDiskSize()
if disk_size == 0:
c.Set(t.CUInt32T(buff, t.CPtr), 131072)
elif disk_size > 0xFFFFFFFF:
c.Set(t.CUInt32T(buff, t.CPtr), 0xFFFFFFFF)
else:
c.Set(t.CUInt32T(buff, t.CPtr), t.CUInt32T(disk_size))
return types.DRESULT.RES_OK
case types.GET_SECTOR_SIZE:
c.Set(t.CUInt16T(buff, t.CPtr), 512)
return types.DRESULT.RES_OK
case types.GET_BLOCK_SIZE:
c.Set(t.CUInt32T(buff, t.CPtr), 1)
return types.DRESULT.RES_OK
case types.CTRL_SYNC:
return types.DRESULT.RES_OK
case _:
return types.DRESULT.RES_PARERR