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m1n1.hw.admac: Add CHAN_SRAM_CARVEOUT registers

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The new registers contain SRAM limits allocated to each channel.

Signed-off-by: Martin Povišer <povik@protonmail.com>
This commit is contained in:
Martin Povišer 2022-10-20 23:12:26 +02:00 committed by Hector Martin
parent 1836913ef6
commit 8ff430aefa
1 changed files with 21 additions and 3 deletions
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24
proxyclient/m1n1/hw/admac.py
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@ -60,6 +60,10 @@ class R_BUSWIDTH(Register32):
WORD = 2, 0, E_BUSWIDTH
FRAME = 6, 4, E_FRAME
class R_CARVEOUT(Register32):
SIZE = 31, 16
BASE = 15, 0
class ADMACRegs(RegMap):
TX_EN = 0x0, Register32 # one bit per channel
TX_EN_CLR = 0x4, Register32
@ -81,13 +85,16 @@ class ADMACRegs(RegMap):
# a 24 MHz always-running counter, top bit is always set
COUNTER = 0x70, Register64
TX_SRAM_SIZE = 0x94, Register32
RX_SRAM_SIZE = 0x98, Register32
# -- per-channel registers --
CHAN_CTL = (irange(0x8000, 32, 0x200)), R_CHAN_CONTROL
CHAN_BUSWIDTH = (irange(0x8040, 32, 0x200)), R_BUSWIDTH
# TODO: needs more research
CHAN_BURSTSIZE = (irange(0x8054, 32, 0x200)), Register32
CHAN_BUSWIDTH = (irange(0x8040, 32, 0x200)), R_BUSWIDTH
CHAN_SRAM_CARVEOUT = (irange(0x8050, 32, 0x200)), R_CARVEOUT
CHAN_BURSTSIZE = (irange(0x8054, 32, 0x200)), Register32
CHAN_RESIDUE = irange(0x8064, 32, 0x200), Register32
@ -243,6 +250,17 @@ class ADMACChannel(Reloadable):
def burstsize(self, size):
self.regs.CHAN_BURSTSIZE[self.ch].val = size
@property
def sram_carveout(self):
reg = self.regs.CHAN_SRAM_CARVEOUT[self.ch].reg
return (reg.BASE, reg.SIZE)
@sram_carveout.setter
def sram_carveout(self, carveout):
base, size = carveout
self.regs.CHAN_SRAM_CARVEOUT[self.ch].reg = \
R_CARVEOUT(BASE=base, SIZE=size)
@property
def DESC_WRITE(self):
if self.tx: