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arm, dev: Add support for listing DMA ports in new platforms

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When using a Ruby memory system, the Ruby configuration scripts expect
to get a list of DMA ports to create the necessary DMA sequencers. Add
support in the utility functions that wire up devices to append DMA
ports to a list instead of connecting them to the IO bus. These
functions are currently only used by the VExpress_GEM5_V1 platform.

Change-Id: I46059e46b0f69e7be5f267e396811bd3caa3ed63
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
Reviewed-by: Brad Beckmann <brad.beckmann@amd.com>
This commit is contained in:
Andreas Sandberg 2016-08-10 15:27:26 +01:00
parent 26dc0017d2
commit f540f1a230
1 changed files with 17 additions and 12 deletions
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29
src/dev/arm/RealView.py
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@ -301,12 +301,18 @@ class RealView(Platform):
_off_chip_ranges = []
def _attach_io(self, devices, bus):
def _attach_device(self, device, bus, dma_ports=None):
if hasattr(device, "pio"):
device.pio = bus.master
if hasattr(device, "dma"):
if dma_ports is None:
device.dma = bus.slave
else:
dma_ports.append(device.dma)
def _attach_io(self, devices, *args, **kwargs):
for d in devices:
if hasattr(d, "pio"):
d.pio = bus.master
if hasattr(d, "dma"):
d.dma = bus.slave
self._attach_device(d, *args, **kwargs)
def _attach_clk(self, devices, clkdomain):
for d in devices:
@ -325,13 +331,13 @@ class RealView(Platform):
def offChipIOClkDomain(self, clkdomain):
self._attach_clk(self._off_chip_devices(), clkdomain)
def attachOnChipIO(self, bus, bridge=None):
self._attach_io(self._on_chip_devices(), bus)
def attachOnChipIO(self, bus, bridge=None, **kwargs):
self._attach_io(self._on_chip_devices(), bus, **kwargs)
if bridge:
bridge.ranges = self._off_chip_ranges
def attachIO(self, bus):
self._attach_io(self._off_chip_devices(), bus)
def attachIO(self, *args, **kwargs):
self._attach_io(self._off_chip_devices(), *args, **kwargs)
def setupBootLoader(self, mem_bus, cur_sys, loc):
@ -923,10 +929,9 @@ Interrupts:
self.energy_ctrl,
]
def attachPciDevice(self, device, bus):
def attachPciDevice(self, device, *args, **kwargs):
device.host = self.pci_host
device.pio = bus.master
device.dma = bus.slave
self._attach_device(device, *args, **kwargs)
def setupBootLoader(self, mem_bus, cur_sys, loc):
self.nvmem = SimpleMemory(range=AddrRange(0, size='64MB'),