| #!/usr/bin/env python3 |
| # SPDX-FileCopyrightText: Copyright 2024 Arm Limited and/or its affiliates <open-source-office@arm.com> |
| # SPDX-License-Identifier: Apache-2.0 |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| import logging |
| import vsi_video |
| |
| ## Set verbosity level |
| #verbosity = logging.DEBUG |
| verbosity = logging.ERROR |
| |
| # [debugging] Verbosity settings |
| level = { 10: "DEBUG", 20: "INFO", 30: "WARNING", 40: "ERROR" } |
| logging.basicConfig(format='Py: VSI7: [%(levelname)s]\t%(message)s', level = verbosity) |
| logging.info("Verbosity level is set to " + level[verbosity]) |
| |
| |
| # Video Server configuration |
| server_address = ('127.0.0.1', 6003) |
| server_authkey = 'vsi_video' |
| |
| |
| # IRQ registers |
| IRQ_Status = 0 |
| |
| # Timer registers |
| Timer_Control = 0 |
| Timer_Interval = 0 |
| |
| # Timer Control register definitions |
| Timer_Control_Run_Msk = 1<<0 |
| Timer_Control_Periodic_Msk = 1<<1 |
| Timer_Control_Trig_IRQ_Msk = 1<<2 |
| Timer_Control_Trig_DMA_Msk = 1<<3 |
| |
| # DMA registers |
| DMA_Control = 0 |
| |
| # DMA Control register definitions |
| DMA_Control_Enable_Msk = 1<<0 |
| DMA_Control_Direction_Msk = 1<<1 |
| DMA_Control_Direction_P2M = 0<<1 |
| DMA_Control_Direction_M2P = 1<<1 |
| |
| # User registers |
| Regs = [0] * 64 |
| |
| # Data buffer |
| Data = bytearray() |
| |
| |
| ## Initialize |
| # @return None |
| def init(): |
| logging.info("Python function init() called") |
| vsi_video.init(server_address, server_authkey) |
| |
| |
| ## Read interrupt request (the VSI IRQ Status Register) |
| # @return value value read (32-bit) |
| def rdIRQ(): |
| global IRQ_Status |
| logging.info("Python function rdIRQ() called") |
| |
| value = IRQ_Status |
| logging.debug("Read interrupt request: {}".format(value)) |
| |
| return value |
| |
| |
| ## Write interrupt request (the VSI IRQ Status Register) |
| # @param value value to write (32-bit) |
| # @return value value written (32-bit) |
| def wrIRQ(value): |
| global IRQ_Status |
| logging.info("Python function wrIRQ() called") |
| |
| value = vsi_video.wrIRQ(IRQ_Status, value) |
| IRQ_Status = value |
| logging.debug("Write interrupt request: {}".format(value)) |
| |
| return value |
| |
| |
| ## Write Timer registers (the VSI Timer Registers) |
| # @param index Timer register index (zero based) |
| # @param value value to write (32-bit) |
| # @return value value written (32-bit) |
| def wrTimer(index, value): |
| global Timer_Control, Timer_Interval |
| logging.info("Python function wrTimer() called") |
| |
| if index == 0: |
| Timer_Control = value |
| logging.debug("Write Timer_Control: {}".format(value)) |
| elif index == 1: |
| Timer_Interval = value |
| logging.debug("Write Timer_Interval: {}".format(value)) |
| |
| return value |
| |
| |
| ## Timer event (called at Timer Overflow) |
| # @return None |
| def timerEvent(): |
| global IRQ_Status |
| |
| logging.info("Python function timerEvent() called") |
| |
| IRQ_Status = vsi_video.timerEvent(IRQ_Status) |
| |
| |
| ## Write DMA registers (the VSI DMA Registers) |
| # @param index DMA register index (zero based) |
| # @param value value to write (32-bit) |
| # @return value value written (32-bit) |
| def wrDMA(index, value): |
| global DMA_Control |
| logging.info("Python function wrDMA() called") |
| |
| if index == 0: |
| DMA_Control = value |
| logging.debug("Write DMA_Control: {}".format(value)) |
| |
| return value |
| |
| |
| ## Read data from peripheral for DMA P2M transfer (VSI DMA) |
| # @param size size of data to read (in bytes, multiple of 4) |
| # @return data data read (bytearray) |
| def rdDataDMA(size): |
| global Data |
| logging.info("Python function rdDataDMA() called") |
| |
| Data = vsi_video.rdDataDMA(size) |
| |
| n = min(len(Data), size) |
| data = bytearray(size) |
| data[0:n] = Data[0:n] |
| logging.debug("Read data ({} bytes)".format(size)) |
| |
| return data |
| |
| |
| ## Write data to peripheral for DMA M2P transfer (VSI DMA) |
| # @param data data to write (bytearray) |
| # @param size size of data to write (in bytes, multiple of 4) |
| # @return None |
| def wrDataDMA(data, size): |
| global Data |
| logging.info("Python function wrDataDMA() called") |
| |
| Data = data |
| logging.debug("Write data ({} bytes)".format(size)) |
| |
| vsi_video.wrDataDMA(data, size) |
| |
| return |
| |
| |
| ## Read user registers (the VSI User Registers) |
| # @param index user register index (zero based) |
| # @return value value read (32-bit) |
| def rdRegs(index): |
| global Regs |
| logging.info("Python function rdRegs() called") |
| |
| if index <= vsi_video.REG_IDX_MAX: |
| Regs[index] = vsi_video.rdRegs(index) |
| |
| value = Regs[index] |
| logging.debug("Read user register at index {}: {}".format(index, value)) |
| |
| return value |
| |
| |
| ## Write user registers (the VSI User Registers) |
| # @param index user register index (zero based) |
| # @param value value to write (32-bit) |
| # @return value value written (32-bit) |
| def wrRegs(index, value): |
| global Regs |
| logging.info("Python function wrRegs() called") |
| |
| if index <= vsi_video.REG_IDX_MAX: |
| value = vsi_video.wrRegs(index, value) |
| |
| Regs[index] = value |
| logging.debug("Write user register at index {}: {}".format(index, value)) |
| |
| return value |
| |
| |
| ## @} |
| |