busy_o/1 most likely to be x_busy_o
go_die_i/1 rst?
- addr.data/48 x_addr_i (x_addr_i[:4] goes into LenExpand)
- addr.ok/1 probably x_valid_i & ~x_stall_i
+ addr.data/64 x_addr_i (x_addr_i[:4] goes into LenExpand)
+ addr.ok/1 probably x_i_valid & ~x_stall_i
addr_ok_o/1 no equivalent. *might* work using x_stall_i
exc_o/6(?) m_load_err_o and m_store_err_o
class Pi2LSUI(PortInterfaceBase):
def __init__(self, name, lsui=None,
- data_wid=64, mask_wid=8, addr_wid=48):
+ data_wid=64, mask_wid=8, addr_wid=64):
print("pi2lsui reg mask addr", data_wid, mask_wid, addr_wid)
super().__init__(data_wid, addr_wid)
if lsui is None:
self.lsui_busy = Signal()
self.valid_l = SRLatch(False, name="valid")
- def set_wr_addr(self, m, addr, mask, misalign):
+ def set_wr_addr(self, m, addr, mask, misalign, msr, is_dcbz, is_nc):
+ print("pi2lsui TODO, implement is_dcbz")
m.d.comb += self.valid_l.s.eq(1)
m.d.comb += self.lsui.x_mask_i.eq(mask)
m.d.comb += self.lsui.x_addr_i.eq(addr)
- def set_rd_addr(self, m, addr, mask, misalign):
+ def set_rd_addr(self, m, addr, mask, misalign, msr, is_nc):
m.d.comb += self.valid_l.s.eq(1)
m.d.comb += self.lsui.x_mask_i.eq(mask)
m.d.comb += self.lsui.x_addr_i.eq(addr)
m.next = "IDLE"
# indicate valid at both ends. OR with lsui_busy (stops comb loop)
- m.d.comb += self.lsui.m_valid_i.eq(self.valid_l.q )
- m.d.comb += self.lsui.x_valid_i.eq(self.valid_l.q )
+ m.d.comb += self.lsui.m_i_valid.eq(self.valid_l.q )
+ m.d.comb += self.lsui.x_i_valid.eq(self.valid_l.q )
# reset the valid latch when not busy. sync to stop loop
lsui_active = Signal()
class Pi2LSUI1(Elaboratable):
def __init__(self, name, pi=None, lsui=None,
- data_wid=64, mask_wid=8, addr_wid=48):
+ data_wid=64, mask_wid=8, addr_wid=64):
print("pi2lsui reg mask addr", data_wid, mask_wid, addr_wid)
self.addrbits = mask_wid
if pi is None:
# expand the LSBs of address plus LD/ST len into 16-bit mask
m.d.comb += lsui.x_mask_i.eq(lenexp.lexp_o)
# pass through the address, indicate "valid"
- m.d.comb += lsui.x_valid_i.eq(1)
+ m.d.comb += lsui.x_i_valid.eq(1)
# indicate "OK" - XXX should be checking address valid
m.d.comb += pi.addr_ok_o.eq(1)