/**
* fsr_update_vol_spec - update volume & partition instance from the device
* @param volume : a volume number
*/
int fsr_update_vol_spec(u32 volume)
{
int error;
FSRVolSpec *vs;
FSRPartI *pi;
DEBUG(DL3,"TINY[I]: volume(%d)\n", volume);
vs = fsr_get_vol_spec(volume);
pi = fsr_get_part_spec(volume);
memset(vs, 0x00, sizeof(FSRVolSpec));
memset(pi, 0x00, sizeof(FSRPartI));
error = FSR_BML_GetVolSpec(volume, vs, FSR_BML_FLAG_NONE);
/* I/O error */
if (error != FSR_BML_SUCCESS)
{
ERRPRINTK("FSR_BML_GetVolSpec func fail\n");
return -1;
}
error = FSR_BML_GetFullPartI(volume, pi);
/* I/O error */
if (error != FSR_BML_SUCCESS)
{
ERRPRINTK("FSR_BML_GetFullPartI func fail\n");
return -1;
}
DEBUG(DL3,"TINY[O]: volume(%d)\n", volume);
return 0;
}
/**
* fsr_read_partitions - read partition table into the device
* @param volume : a volume number
* @param parttab : buffer to store the partition table
*/
int fsr_read_partitions(u32 volume, BML_PARTTAB_T *parttab)
{
int error;
u32 partno;
FSRPartI *pi;
DEBUG(DL3,"TINY[I]: volume(%d)\n", volume);
pi = fsr_get_part_spec(volume);
/*could't find vaild part table*/
if (!pi->nNumOfPartEntry)
{
error = fsr_update_vol_spec(volume);
/* I/O error */
if (error) /*never action, because of low-formatting*/
{
DEBUG(DL1,"error(%x)", error);
}
}
DEBUG(DL1,"pi->nNumOfPartEntry: %d", pi->nNumOfPartEntry);
parttab->num_parts = (int) pi->nNumOfPartEntry;
for (partno = 0; partno < pi->nNumOfPartEntry; partno++)
{
parttab->part_size[partno] = (int) pi->stPEntry[partno].nNumOfUnits;
parttab->part_id[partno] = (int) pi->stPEntry[partno].nID;
parttab->part_attr[partno] = (int) pi->stPEntry[partno].nAttr;
}
DEBUG(DL3,"TINY[I]: volume(%d)\n", volume);
return 0;
}
static int bml_transfer(u32 volume, u32 partno, const struct request *req)
#endif
{
unsigned long sector, nsect;
char *buf;
FSRVolSpec *vs;
FSRPartI *ps;
u32 nPgsPerUnit = 0, n1stVpn = 0, spp_shift, spp_mask;
int ret;
DEBUG(DL3,"TINY[I]: volume(%d), partno(%d)\n", volume, partno);
if (!blk_fs_request(req))
{
return 0;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 31)
sector = blk_rq_pos(req);
nsect = data_len >> 9;
#else
sector = req->sector;
nsect = req->current_nr_sectors;
#endif
buf = req->buffer;
vs = fsr_get_vol_spec(volume);
ps = fsr_get_part_spec(volume);
spp_shift = ffs(vs->nSctsPerPg) - 1;
spp_mask = vs->nSctsPerPg - 1;
if(!fsr_is_whole_dev(partno))
{
if (FSR_BML_GetVirUnitInfo(volume,
fsr_part_start(ps, partno), &n1stVpn, &nPgsPerUnit)
!= FSR_BML_SUCCESS)
{
ERRPRINTK("FSR_BML_GetVirUnitInfo FAIL\n");
return -EIO;
}
}
switch (rq_data_dir(req))
{
case READ:
/*
* If sector and nsect are aligned with vs->nSctsPerPg,
* you have to use a FSR_BML_Read() function using page unit,
* If not, use a FSR_BML_ReadScts() function using sector unit.
*/
if ((!(sector & spp_mask) && !(nsect & spp_mask)))
{
ret = FSR_BML_Read(volume, n1stVpn + (sector >> spp_shift),
nsect >> spp_shift, buf, NULL, FSR_BML_FLAG_ECC_ON);
}
else
{
