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cores/hyperbus: reg_buf.source -> reg_ep.

This commit is contained in:
Florent Kermarrec 2024-04-15 14:48:38 +02:00
parent 1597791fb6
commit 2100a6bd8c
1 changed files with 9 additions and 8 deletions
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17
litex/soc/cores/hyperbus.py
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@ -128,14 +128,15 @@ class HyperRAM(LiteXModule):
layout = [("write", 1), ("read", 1), ("addr", 4), ("data", 16)],
depth = 4,
)
reg_ep = reg_buf.source
self.comb += [
reg_buf.sink.valid.eq(self.reg_write | self.reg_read),
reg_buf.sink.write.eq(self.reg_write),
reg_buf.sink.read.eq(self.reg_read),
reg_buf.sink.addr.eq(self.reg_addr),
reg_buf.sink.data.eq(self.reg_write_data),
reg_write_req.eq(reg_buf.source.valid & reg_buf.source.write),
reg_read_req.eq( reg_buf.source.valid & reg_buf.source.read),
reg_write_req.eq(reg_ep.valid & reg_ep.write),
reg_read_req.eq( reg_ep.valid & reg_ep.read),
]
self.sync += If(reg_buf.sink.valid,
self.reg_write_done.eq(0),
@ -146,10 +147,10 @@ class HyperRAM(LiteXModule):
ashift = {8:1, 16:0}[dw]
self.comb += [
If(reg_write_req | reg_read_req,
ca[47].eq(reg_buf.source.read), # R/W#
ca[46].eq(1), # Register Space.
ca[45].eq(1), # Burst Type (Linear)
Case(reg_buf.source.addr, {
ca[47].eq(reg_ep.read), # R/W#
ca[46].eq(1), # Register Space.
ca[45].eq(1), # Burst Type (Linear)
Case(reg_ep.addr, {
0 : ca[0:40].eq(0x00_00_00_00_00), # Identification Register 0 (Read Only).
1 : ca[0:40].eq(0x00_00_00_00_01), # Identification Register 1 (Read Only).
2 : ca[0:40].eq(0x00_01_00_00_00), # Configuration Register 0.
@ -230,7 +231,7 @@ class HyperRAM(LiteXModule):
dq.oe.eq(1),
# Wait for 2 cycles...
If(cycles == (2 - 1),
reg_buf.source.ready.eq(1),
reg_ep.ready.eq(1),
NextValue(self.reg_write_done, 1),
NextState("IDLE")
)
@ -285,7 +286,7 @@ class HyperRAM(LiteXModule):
# Read Ack (when dat_r ready).
If((n == 0) & ~first,
If(reg_read_req,
reg_buf.source.ready.eq(1),
reg_ep.ready.eq(1),
NextValue(self.reg_read_done, 1),
NextValue(self.reg_read_data, bus.dat_r),
NextState("IDLE"),