void bdepends_on (void *parent, void *child)
{
buf_s *pbuf;
buf_s *cbuf;
pbuf = addr2buf(parent);
cbuf = addr2buf(child);
queen_ant( &pbuf->b_ant, &cbuf->b_ant);
}
void bclear_dependency (void *data)
{
buf_s *buf;
buf = addr2buf(data);
clear_queen( &buf->b_ant);
}
void *bcontext (void *data)
{
buf_s *buf;
buf = addr2buf(data);
return buf->b_tree;
}
u64 bblkno (void *data)
{
buf_s *buf;
buf = addr2buf(data);
return buf->b_blkno;
}
ant_s *bant (void *data)
{
buf_s *buf;
buf = addr2buf(data);
return &buf->b_ant;
}
void bdirty (void *data)
{
buf_s *buf;
buf = addr2buf(data);
aver(buf->b_ant.a_state != ANT_FLUSHING);
buf->b_ant.a_state = ANT_DIRTY;
}
void bchange_blkno (void *data, u64 blkno)
{
buf_s *buf;
buf = addr2buf(data);
printf("change %llx -> %llx\n", buf->b_blkno, blkno);
rmv(buf);
buf->b_blkno = blkno;
add(buf);
}
void bput (void *data)
{
buf_s *buf;
buf = addr2buf(data);
aver(buf->b_use > 0);
if (!Lazy) {
bflush(buf);
}
aver(buf->b_use > 0);
--buf->b_use;
}
size_t Mtd25::bus_read(uint8_t *rxbuf, size_t len, uint32_t offset) {
msg_t status;
osalDbgAssert((offset + len) <= capacity(), "Transaction out of device bounds");
osalDbgCheck(this->writebuf_size >= cfg.addr_len + 1);
this->acquire();
/* fill preamble */
if (4 == cfg.addr_len)
writebuf[0] = S25_CMD_4READ;
else
writebuf[0] = S25_CMD_READ;
addr2buf(&writebuf[1], offset, cfg.addr_len);
status = spi_read(rxbuf, len, writebuf, 1+cfg.addr_len);
this->release();
if (MSG_OK == status)
return len;
else
return 0;
}
