static dcache_entry_t *
read_cylinder (uint32 fd, uint32 offset, read_callback_funcp_t read_callback)
{
uint32 nread;
uint8 buf[SECTORS_PER_FLOPPY_CYLINDER * 512], *bufp;
dcache_entry_t *retval;
uint32 new_offset;
new_offset = offset / sizeof buf * sizeof buf;
nread = read_callback (fd, buf, new_offset, sizeof buf);
if (nread != sizeof buf)
retval = NULL;
else
{
for (bufp = buf;
bufp + DCACHE_BLOCK_SIZE <= buf + sizeof buf;
bufp += DCACHE_BLOCK_SIZE, new_offset += DCACHE_BLOCK_SIZE)
{
if (!dcache_entry_lookup (fd, new_offset))
{
uint32 n_written;
n_written = dcache_write (fd, bufp, new_offset,
DCACHE_BLOCK_SIZE, NULL);
if (n_written != DCACHE_BLOCK_SIZE)
warning_unexpected (NULL_STRING);
}
}
retval = dcache_entry_lookup (fd, offset);
}
return retval;
}
void dcache_write_b(int cpu, unsigned long addr,
int count)
{
if(count == 1) {
nb_dcache_write[cpu]++;
}
dcache_write(cpu, addr);
}
void dcache_write_w(int cpu, unsigned long addr,
int count)
{
if(count == 1) {
nb_dcache_write[cpu]++;
}
if (((addr & DCACHE_LINE_MASK) + 1) < DCACHE_LINE_SIZE) {
dcache_write(cpu, addr);
} else { /* Unaligned */
dcache_write_b(cpu, addr + 0, 0);
dcache_write_b(cpu, addr + 1, 0);
}
}