X86 CPLD扩展串口中断问题

2011-09-06 11:45:10 160 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

AMC处理器板Fabric选项详解：从PCIe到10GbE的选型与调试在嵌入式系统与通信设备中，AMC（Advanced Mezzanine Card）作为标准化的夹层卡，承担着计算、控制与数据转发的核心角色。其Fabric接口定义了板卡与背板之间的高速互连方式，常见选项包括PCIe、SATA/SAS、以太网（1GbE/10GbE）与串行RapidIO。不同协议对应不同应用场景：PCIe适合通用数据通道与计算扩展，10GbE适合IP网络接入，SATA/SAS面向存储扩展，而SRIO则用于低延迟实时信号处理。通过CPLD逻辑与EEPROM配置，同一块板卡可灵活切换Fabric模阅读详情

我在AMD lx800的板子上做了CE,板载的2串口是可以收发的，板子通过ISA总线CPLD外扩了6个串口。使用了共享中断10，在XP下是这样的。直接添加新硬件，找到设备后配置了地址空间就可以使用。
在CE下，因为采用共享中断我在x86目录下的init.c中进行了如下配置



    // COM1 - 0x3F8-0x3FF, IRQ4

    // COM2 - 0x2F8-0x3FF, IRQ3

    // COM3 - 0x3E8-0x3EF, IRQ4

    // COM4 - 0x2E8-0x2EF, IRQ3

    //

    // IRQ3 - COM2 or COM4

    OALIntrStaticTranslate(SYSINTR_FIRMWARE + 3, 3);



    // IRQ4 - COM1 or COM3

    OALIntrStaticTranslate(SYSINTR_FIRMWARE + 4, 4);



	//add by me 

	OALIntrStaticTranslate(SYSINTR_FIRMWARE + 19, 10);

	OALIntrStaticTranslate(SYSINTR_FIRMWARE + 20, 10);

	OALIntrStaticTranslate(SYSINTR_FIRMWARE + 21, 10);

	OALIntrStaticTranslate(SYSINTR_FIRMWARE + 22, 10);

	OALIntrStaticTranslate(SYSINTR_FIRMWARE + 23, 10);

然后再注册表中进行了如下配置：



IF BSP_SERIAL3

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial3]

   "SysIntr"=dword:1A

   "IoBase"=dword:300

   "IoLen"=dword:8

   "DeviceArrayIndex"=dword:2

   "Prefix"="COM"

   "IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"

   "Dll"="Com16550.Dll"

   "Order"=dword:0

; Turn on follows for Installable ISR (isr16550 supporting SOFTWARE FIFO)

   "Irq"=dword:A

   "IsrDll"="isr16550.dll"

   "IsrHandler"="ISRHandler"



[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial3\Unimodem]

   "Tsp"="Unimodem.dll"

   "DeviceType"=dword:0

   "FriendlyName"=LOC_FRIENDLYNAME_SERIAL3

   "DevConfig"=hex: 10,00, 00,00, 05,00,00,00, 10,01,00,00, 00,4B,00,00, 00,00, 08, 00, 00, 00,00,00,00

ENDIF BSP_SERIAL3



; COM4

IF BSP_SERIAL4

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial4]

   "SysIntr"=dword:23

   "IoBase"=dword:308

   "IoLen"=dword:8

   "DeviceArrayIndex"=dword:3

   "Prefix"="COM"

   "IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"

   "Dll"="Com16550.Dll"

   "Order"=dword:0

; Turn on follows for Installable ISR (isr16550 supporting SOFTWARE FIFO)

   "Irq"=dword:A

   "IsrDll"="isr16550.dll"

   "IsrHandler"="ISRHandler"



[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial4\Unimodem]

   "Tsp"="Unimodem.dll"

   "DeviceType"=dword:0

   "FriendlyName"=LOC_FRIENDLYNAME_SERIAL4

   "DevConfig"=hex: 10,00, 00,00, 05,00,00,00, 10,01,00,00, 00,4B,00,00, 00,00, 08, 00, 00, 00,00,00,00

ENDIF BSP_SERIAL4







IF BSP_SERIAL5

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial5]

   "SysIntr"=dword:24

   "IoBase"=dword:310

   "IoLen"=dword:8

   "DeviceArrayIndex"=dword:4

   "Prefix"="COM"

   "IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"

   "Dll"="Com16550.Dll"

   "Order"=dword:0

; Turn on follows for Installable ISR (isr16550 supporting SOFTWARE FIFO)

   "Irq"=dword:A

   "IsrDll"="isr16550.dll"

   "IsrHandler"="ISRHandler"



[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial5\Unimodem]

   "Tsp"="Unimodem.dll"

   "DeviceType"=dword:0

   ;"FriendlyName"=LOC_FRIENDLYNAME_SERIAL5

   "DevConfig"=hex: 10,00, 00,00, 05,00,00,00, 10,01,00,00, 00,4B,00,00, 00,00, 08, 00, 00, 00,00,00,00

ENDIF BSP_SERIAL5



IF BSP_SERIAL6

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial6]

   "SysIntr"=dword:25

   "IoBase"=dword:318

   "IoLen"=dword:8

   "DeviceArrayIndex"=dword:5

   "Prefix"="COM"

   "IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"

   "Dll"="Com16550.Dll"

   "Order"=dword:0

; Turn on follows for Installable ISR (isr16550 supporting SOFTWARE FIFO)

   "Irq"=dword:A

   "IsrDll"="isr16550.dll"

   "IsrHandler"="ISRHandler"



[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial6\Unimodem]

   "Tsp"="Unimodem.dll"

   "DeviceType"=dword:0

   ;"FriendlyName"=LOC_FRIENDLYNAME_SERIAL6

   "DevConfig"=hex: 10,00, 00,00, 05,00,00,00, 10,01,00,00, 00,4B,00,00, 00,00, 08, 00, 00, 00,00,00,00

ENDIF BSP_SERIAL6





IF BSP_SERIAL7

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial7]

   "SysIntr"=dword:26

   "IoBase"=dword:320

   "IoLen"=dword:8

   "DeviceArrayIndex"=dword:6

   "Prefix"="COM"

   "IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"

   "Dll"="Com16550.Dll"

   "Order"=dword:0

; Turn on follows for Installable ISR (isr16550 supporting SOFTWARE FIFO)

   "Irq"=dword:A

   "IsrDll"="isr16550.dll"

   "IsrHandler"="ISRHandler"



[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial7\Unimodem]

   "Tsp"="Unimodem.dll"

   "DeviceType"=dword:0

   ;"FriendlyName"=LOC_FRIENDLYNAME_SERIAL8

   "DevConfig"=hex: 10,00, 00,00, 05,00,00,00, 10,01,00,00, 00,4B,00,00, 00,00, 08, 00, 00, 00,00,00,00

ENDIF BSP_SERIAL7





IF BSP_SERIAL8

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial8]

   "SysIntr"=dword:27

   "IoBase"=dword:328

   "IoLen"=dword:8

   "DeviceArrayIndex"=dword:7

   "Prefix"="COM"

   "IClass"="{CC5195AC-BA49-48a0-BE17-DF6D1B0173DD}"

   "Dll"="Com16550.Dll"

   "Order"=dword:0

; Turn on follows for Installable ISR (isr16550 supporting SOFTWARE FIFO)

   "Irq"=dword:A

   "IsrDll"="isr16550.dll"

   "IsrHandler"="ISRHandler"



[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\Serial8\Unimodem]

   "Tsp"="Unimodem.dll"

   "DeviceType"=dword:0

   ;"FriendlyName"=LOC_FRIENDLYNAME_SERIAL8

   "DevConfig"=hex: 10,00, 00,00, 05,00,00,00, 10,01,00,00, 00,4B,00,00, 00,00, 08, 00, 00, 00,00,00,00

ENDIF BSP_SERIAL8

现在是8串口都可以creatfile成功。但是外扩的后5个串口只要一发数据就死机。
看到有很多朋友说ISA扩展的不可以共享中断，但是我通过CPLD扩展的驱动在CPLD中都实现了，和系统的接口都是16550兼容的UART。坛子里有做过的吗？求指导

...全文

嵌入式硬件工程师是什么？新手学习需要了解什么？在学习的道路上我们一直是新手，硬件行业显得更加如此。想成为高级嵌入式硬件工程师，你还缺少什么？有很多朋友经常会问，成为高级嵌入式系统硬件工程师，需要做到哪些呢?这里的话你可以留下企鹅，相信我一定可以帮的到你。那么，我们就先从嵌入式硬件工程师是个什么概念入手一、如何理解“嵌入式”的概念呢? 1、从硬件上，将基于CPU的处围器件，整合到CPU芯片内部，比如早期基于X86体系结阅读详情

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X86 CPLD扩展串口中断问题

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