TDA4VH-Q1: tda4vh-pcie-两个板子互连功能

yk z

Prodigy 200 points

Part Number: TDA4VH-Q1

我们需要将两个板子通过PCIE接在一起，目前一个板子为rc角色，一个板子ep 角色

两个通过线缆连接在一起，RC这边没能与EP,link up上

已验证：

单独修改RC电路，连接上PCIE 网卡可以识别到设备

请问这个问题怎么排除及解决，谢谢

10 个月前

0 Gary Lu 10 个月前

TI__Mastermind 27060 points

yk z 说：
请问这个问题怎么排除及解决，谢谢

1. 确认硬件连接2. 验证硬件配置3. 检查 PCIE 配置4. 检查驱动程序

0 yk z 10 个月前

Prodigy 200 points

两两板子连接,硬件上是不是只需要以下就可以,时钟可以通过时钟IC单独供100Mhz

PCIE0_RX0_P

PCIE0_RX0_N

PCIE0_RX1_P

PCIE0_RX1_N

PCIE0_RX2_P

PCIE0_RX2_N

PCIE0_RX3_P

PCIE0_RX3_N

PCIE0_TX0_P

PCIE0_TX0_N

PCIE0_TX1_P

PCIE0_TX1_N

PCIE0_TX2_P

PCIE0_TX2_N

PCIE0_TX3_P

PCIE0_TX3_N

0 Gary Lu 10 个月前回复 yk z

TI__Mastermind 27060 points

您好，

在硬件上，如果您要连接两个板子，步骤是1. 电气连接2. 时钟信号3. 信号完整性

0 yk z 10 个月前回复 Gary Lu

Prodigy 200 points

test_result.log

20231120_13:58:55:259:BAR0: OKAY
20231120_13:58:55:259:BAR1: OKAY
20231120_13:58:55:259:BAR2: OKAY
20231120_13:58:55:260:BAR3: OKAY
20231120_13:58:55:332:BAR4: OKAY
20231120_13:58:55:785:BAR5: OKAY
20231120_13:58:55:785:
20231120_13:58:55:785:Interrupt tests
20231120_13:58:55:785:
20231120_13:58:55:785:SET IRQ TYPE TO LEGACY: OKAY
20231120_13:58:56:825:LEGACY IRQ: NOT OKAY
20231120_13:58:56:825:SET IRQ TYPE TO MSI: OKAY
20231120_13:58:56:825:MSI1: OKAY
20231120_13:58:56:825:MSI2: OKAY
20231120_13:58:57:833:MSI3: NOT OKAY
20231120_13:58:58:860:MSI4: NOT OKAY
20231120_13:58:59:883:MSI5: NOT OKAY
20231120_13:59:00:910:MSI6: NOT OKAY

20231120_13:59:27:553:SET IRQ TYPE TO MSI-X: OKAY
20231120_13:59:27:553:MSI-X1: OKAY
20231120_13:59:27:553:MSI-X2: OKAY
20231120_13:59:28:564:MSI-X3: NOT OKAY
20231120_13:59:29:588:MSI-X4: NOT OKAY
20231120_13:59:30:610:MSI-X5: NOT OKAY
20231120_13:59:31:639:MSI-X6: NOT OKAY
20231120_13:59:32:650:MSI-X7: NOT OKAY
20231120_13:59:33:771:MSI-X8: NOT OKAY
20231120_13:59:34:702:MSI-X9: NOT OKAY
20231120_13:59:35:725:MSI-X10: NOT OKAY
20231120_13:59:36:751:MSI-X11: NOT OKAY
20231120_13:59:37:775:MSI-X12: NOT OKAY
20231120_13:59:38:799:MSI-X13: NOT OKAY
20231120_13:59:39:821:MSI-X14: NOT OKAY
20231120_13:59:40:848:MSI-X15: NOT OKAY

请问一下，为什么测试中，中断选项会报错，怎样修改可以通过测试

0 Gary Lu 10 个月前回复 yk z

TI__Mastermind 27060 points

中断选项报错可能是由于硬件或驱动程序的问题导致的。要解决这个问题，可以尝试以下方法：

1. 检查硬件连接：确保中断控制器和设备之间的连接正确，没有松动或损坏的地方。

3. BIOS设置：在BIOS中检查中断设置，尝试将中断类型设置为合适的选项

4. 硬件故障：如果以上方法都无效，可能是硬件本身出现故障，需要进行更深入的硬件故障排查或更换硬件。

0 yk z 10 个月前回复 Gary Lu

Prodigy 200 points

请问一下4lane,按下面的测试方法

3.2.2.11. PCIe End Point — Processor SDK Linux for J784s4 Documentation

#mount -t configfs none /sys/kernel/config
cd /sys/kernel/config/pci_ep/
mkdir functions/pci_epf_test/func1
echo 0x104c > functions/pci_epf_test/func1/vendorid
echo 0xb00d > functions/pci_epf_test/func1/deviceid
echo 2 > functions/pci_epf_test/func1/msi_interrupts
echo 2 > functions/pci_epf_test/func1/msix_interrupts
ln -s functions/pci_epf_test/func1 controllers/2900000.pcie-ep/

mkdir functions/pci_epf_test/func2
echo 0x104c > functions/pci_epf_test/func2/vendorid
echo 0xb00d > functions/pci_epf_test/func2/deviceid
echo 2 > functions/pci_epf_test/func2/msi_interrupts
echo 2 > functions/pci_epf_test/func2/msix_interrupts
ln -s functions/pci_epf_test/func2 controllers/2900000.pcie-ep/

mkdir functions/pci_epf_test/func3
echo 0x104c > functions/pci_epf_test/func3/vendorid
echo 0xb00d > functions/pci_epf_test/func3/deviceid
echo 2 > functions/pci_epf_test/func3/msi_interrupts
echo 2 > functions/pci_epf_test/func3/msix_interrupts
ln -s functions/pci_epf_test/func3 controllers/2900000.pcie-ep/

mkdir functions/pci_epf_test/func4
echo 0x104c > functions/pci_epf_test/func4/vendorid
echo 0xb00d > functions/pci_epf_test/func4/deviceid
echo 2 > functions/pci_epf_test/func4/msi_interrupts
echo 2 > functions/pci_epf_test/func4/msix_interrupts
ln -s functions/pci_epf_test/func4 controllers/2900000.pcie-ep/

mkdir functions/pci_epf_test/func5
echo 0x104c > functions/pci_epf_test/func5/vendorid
echo 0xb00d > functions/pci_epf_test/func5/deviceid
echo 2 > functions/pci_epf_test/func5/msi_interrupts
echo 2 > functions/pci_epf_test/func5/msix_interrupts
ln -s functions/pci_epf_test/func5 controllers/2900000.pcie-ep/

mkdir functions/pci_epf_test/func6
echo 0x104c > functions/pci_epf_test/func6/vendorid
echo 0xb00d > functions/pci_epf_test/func6/deviceid
echo 2 > functions/pci_epf_test/func6/msi_interrupts
echo 2 > functions/pci_epf_test/func6/msix_interrupts
ln -s functions/pci_epf_test/func6 controllers/2900000.pcie-ep/
echo 1 > controllers/2900000.pcie-ep/start

最大才2GB/s的速度，是测试方法不对嘛

[  599.454943] WRITE => Size: 1 bytes    DMA: YES        Time: 0.000023405 seconds      Rate: 41 KB/s
[  599.470922] 
[  599.470922] WRITE => Size: 1024 bytes         DMA: YES        Time: 0.000012010 seconds      Rate: 83263 KB/s
[  599.486922] 
[  599.486922] WRITE => Size: 1025 bytes         DMA: YES        Time: 0.000011335 seconds      Rate: 88308 KB/s
[  599.508274] 
[  599.508274] WRITE => Size: 1024000 bytes      DMA: YES        Time: 0.000459040 seconds      Rate: 2178459 KB/s
[  599.532269] 
[  599.532269] WRITE => Size: 1024001 bytes      DMA: YES        Time: 0.000462540 seconds      Rate: 2161977 KB/s
[  599.550919] 
[  599.550919] READ => Size: 1 bytes     DMA: YES        Time: 0.000011330 seconds      Rate: 86 KB/s
[  599.566918] 
[  599.566918] READ => Size: 1024 bytes  DMA: YES        Time: 0.000012525 seconds      Rate: 79840 KB/s
[  599.582920] 
[  599.582920] READ => Size: 1025 bytes  DMA: YES        Time: 0.000013545 seconds      Rate: 73900 KB/s
[  599.599688] 
[  599.599688] READ => Size: 1024000 bytes       DMA: YES        Time: 0.000555825 seconds      Rate: 1799127 KB/s
[  599.623565] 
[  599.623565] READ => Size: 1024001 bytes       DMA: YES        Time: 0.000559655 seconds      Rate: 1786816 KB/s
[  599.638956] 
[  599.638956] COPY => Size: 1 bytes     DMA: YES        Time: 0.000042355 seconds      Rate: 23 KB/s
[  599.654923] 
[  599.654923] COPY => Size: 1024 bytes  DMA: YES        Time: 0.000012930 seconds      Rate: 77339 KB/s
[  599.670922] 
[  599.670922] COPY => Size: 1025 bytes  DMA: YES        Time: 0.000012345 seconds      Rate: 81083 KB/s
[  599.695690] 
[  599.695690] COPY => Size: 1024000 bytes       DMA: YES        Time: 0.000746510 seconds      Rate: 1339566 KB/s
[  599.719719] 
[  599.719719] COPY => Size: 1024001 bytes       DMA: YES        Time: 0.000776040 seconds      Rate: 1288594 KB/s

0 Gary Lu 10 个月前回复 yk z

TI__Mastermind 27060 points

这个测试方法是为了配置PCIe端点功能和进行性能测试。在测试中，您创建了6个名为func1到func6的PCIe端点功能，每个功能都有相同的vendorid和deviceid，并且都配置了2个MSI和2个MSIX中断。然后将这些功能连接到名为2900000.pcie-ep的控制器。

在测试的最后，您将控制器的start文件设置为1，以启动测试。测试结果显示了不同大小数据的读取、写入和复制速度。

至于速度只有2GB/s，这可能是由于测试方法不正确或者硬件/驱动程序的限制。你可能需要检查测试的配置和环境，以便找出速度低的原因。可能需要调整测试参数或者确认硬件和驱动程序的性能限制。

0 yk z 10 个月前回复 Gary Lu

Prodigy 200 points

请问有正确的方法应该是怎样的,我们现在是两个板pcie-to-pcie,rc发起测试,修改了中断数为4,数据也没有上升的情况,官方的evm板最大的测试速度是多少？

0 Gary Lu 10 个月前回复 yk z

TI__Mastermind 27060 points

yk z 说：
官方的evm板最大的测试速度是多少？

600MHz。

0 yk z 10 个月前回复 Gary Lu

Prodigy 200 points

这个速度是lane/s的速度是600MB/s 嘛，4lane就是2.4GB/s

0 Gary Lu 10 个月前回复 yk z

TI__Mastermind 27060 points

您好，是的

0 yk z 10 个月前回复 Gary Lu

Prodigy 200 points

请问测试方法是类似如下测试的打印嘛，还是用专业仪器的测试结果 pcie2pcie吞吐量

3.2.2.11. PCIe End Point — Processor SDK Linux for J784s4 Documentation

ti-processor-sdk-linux-j784s4-evm-08_06_00_12/docs/linux/Foundational_Components_Kernel.html

[  599.454943] WRITE => Size: 1 bytes    DMA: YES        Time: 0.000023405 seconds      Rate: 41 KB/s
[  599.470922] 
[  599.470922] WRITE => Size: 1024 bytes         DMA: YES        Time: 0.000012010 seconds      Rate: 83263 KB/s
[  599.486922] 
[  599.486922] WRITE => Size: 1025 bytes         DMA: YES        Time: 0.000011335 seconds      Rate: 88308 KB/s
[  599.508274] 
[  599.508274] WRITE => Size: 1024000 bytes      DMA: YES        Time: 0.000459040 seconds      Rate: 2178459 KB/s
[  599.532269] 
[  599.532269] WRITE => Size: 1024001 bytes      DMA: YES        Time: 0.000462540 seconds      Rate: 2161977 KB/s
[  599.550919] 
[  599.550919] READ => Size: 1 bytes     DMA: YES        Time: 0.000011330 seconds      Rate: 86 KB/s
[  599.566918] 
[  599.566918] READ => Size: 1024 bytes  DMA: YES        Time: 0.000012525 seconds      Rate: 79840 KB/s
[  599.582920] 
[  599.582920] READ => Size: 1025 bytes  DMA: YES        Time: 0.000013545 seconds      Rate: 73900 KB/s
[  599.599688] 
[  599.599688] READ => Size: 1024000 bytes       DMA: YES        Time: 0.000555825 seconds      Rate: 1799127 KB/s
[  599.623565] 
[  599.623565] READ => Size: 1024001 bytes       DMA: YES        Time: 0.000559655 seconds      Rate: 1786816 KB/s
[  599.638956]

测试脚本

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0

echo "BAR tests"
echo

bar=0

while [ $bar -lt 2 ]
do
	pcitest -b $bar
	bar=`expr $bar + 1`
done
echo

echo "Interrupt tests"
echo

pcitest -i 0
pcitest -l

pcitest -i 1
msi=1

while [ $msi -lt 3 ]
do
        pcitest -m $msi
        msi=`expr $msi + 1`
done
echo

pcitest -i 2
msix=1

while [ $msix -lt 4 ]
do
        pcitest -x $msix
        msix=`expr $msix + 1`
done
echo

echo "Read Tests"
echo

pcitest -i 1

pcitest -d -r -s 1
pcitest -d -r -s 1024
pcitest -d -r -s 1025
pcitest -d -r -s 1024000
pcitest -d -r -s 1024001
echo

echo "Write Tests"
echo

pcitest -d -w -s 1
pcitest -d -w -s 1024
pcitest -d -w -s 1025
pcitest -d -w -s 1024000
pcitest -d -w -s 1024001
echo

echo "Copy Tests"
echo

pcitest -d -c -s 1
pcitest -d -c -s 1024
pcitest -d -c -s 1025
pcitest -d -c -s 1024000
pcitest -d -c -s 1024001
echo

0 Gary Lu 10 个月前回复 yk z

TI__Mastermind 27060 points

如果只是简单的测试PCIE2PCIE的吞吐量，可以使用类似上述打印的方式来测试。这种方式可以简单地测试数据传输速度，但是不够准确，无法检测到一些潜在的问题。如果需要更加准确的测试结果，可以使用专业的测试仪器来测试，比如逻辑分析仪或者示波器等。这些仪器可以提供更加全面的测试结果和分析，以便更好地了解系统的性能和问题。

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TDA4VH-Q1: tda4vh-pcie-两个板子互连功能