void
ide_driver_thread(void) {
static struct Message m;
while (TRUE) {
receive(ANY, &m);
if (m.src == MSG_HARD_INTR) {
if (m.type == IDE_WRITEBACK) {
int i;
for (i = 0; i < NR_SEC_CACHE; i ++) {
if (cache[i].dirty == TRUE) {
ide_prepare(cache[i].sector);
do_write(&cache[i].content);
cache[i].dirty = FALSE;
}
}
} else {
panic("IDE interrupt is leaking");
}
} else if (m.type == DEV_READ) {
//printk("IDE driver receive request!\n");
//printk("rr\n");
uint_32 i, data;
struct PCB *pcb = fetch_pcb(m.src);
//printk("length = %d\n", m.dev_io.length);
for (i = 0; i < m.dev_io.length; i ++) {
//printk("%d\n", i);
data = read_byte(m.dev_io.offset + i);
//printk("after data\n");
copy_from_kernel(pcb, m.dev_io.buf + i, &data, 1);
}
m.type = -1;
m.int_msg.p1 = i;
//printk("Almost Finished!\n");
send(m.src, &m);
//printk("ss\n");
} else if (m.type == DEV_WRITE) {
uint_32 i, data;
struct PCB *pcb = fetch_pcb(m.src);
for (i = 0; i < m.dev_io.length; i ++) {
copy_to_kernel(pcb, &data, m.dev_io.buf + i, 1);
write_byte(m.dev_io.offset + i, data);
}
m.type = -1;
m.int_msg.p1 = i;
send(m.src, &m);
}
}
}
static void
ide_driver_thread(void) {
static Msg m;
while (true) {
receive(ANY, &m,1);
if (m.src == MSG_HARD_INTR) {
if (m.type == IDE_WRITEBACK) {
cache_writeback();
} else {
panic("IDE interrupt is leaking");
}
} else if (m.type == DEV_READ) {
uint32_t i;
uint8_t data;
for (i = 0; i < m.len; i ++) {
data = read_byte(m.offset + i);
copy_from_kernel(fetch_pcb(m.req_pid), m.buf + i, &data, 1);
}
m.ret = i;
m.dest = m.src;
m.src = IDE;
send(m.dest, &m,1);
} else if (m.type == DEV_WRITE) {
uint32_t i;
uint8_t data;
for (i = 0; i < m.len; i ++) {
copy_to_kernel(fetch_pcb(m.req_pid), &data, m.buf + i, 1);
write_byte(m.offset + i, data);
}
m.ret = i;
m.dest = m.src;
m.src = IDE;
send(m.dest, &m,1);
}
else {
assert(0);
}
}
}
