* [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245 board
@ 2007-09-30 2:53 Lucas Jin
2007-10-01 9:53 ` Shinya Kuribayashi
0 siblings, 1 reply; 4+ messages in thread
From: Lucas Jin @ 2007-09-30 2:53 UTC (permalink / raw)
To: u-boot
Hi, all
I am debuging RTL8139 driver for a board based on Sandpoint8245 and I have a problem.
The CPU panic on line 529 in rtl8139.c. (outb(CmdReset, ioaddr + ChipCmd);)
Serial port displayed:
(
Bad trap at PC: fffffffc, SR: 1000, vector=800
NIP: FFFFFFFC XER: 20000000 LR: 00001288 REGS: 077ceb30 TRAP: 0800 DAR: 077CECC0
MSR: 00001000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
GPR00: 00000010 077CEC20 FFFFFF1F 00000000 0000000A 00000010 FFFFFFFB 00000000
GPR08: 00000040 81000000 00000000 FFFFFFFF 00000020 A7AC5E24 07FFD000 080D1000
GPR16: 31380950 8E109020 05808002 55D84040 00003032 00000001 00000000 00000001
GPR24: 00000000 077CEEA8 077CEFC8 00000005 07FF80C8 077CEF94 07FFD6D8 00000000
Call backtrace:
Exception in kernel pc fffffffc signal 0
)
The value of ioaddr is 0x80000000
The value of _IO_BASE outb uses is defined as 0
Thank you all
Jinlu
^ permalink raw reply [flat|nested] 4+ messages in thread
* [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245 board
2007-09-30 2:53 [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245 board Lucas Jin
@ 2007-10-01 9:53 ` Shinya Kuribayashi
2007-10-01 11:07 ` [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245board Lucas Jin
2007-10-01 17:40 ` [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245 board Scott Wood
0 siblings, 2 replies; 4+ messages in thread
From: Shinya Kuribayashi @ 2007-10-01 9:53 UTC (permalink / raw)
To: u-boot
Lucas Jin wrote:
> Hi, all
>
> I am debuging RTL8139 driver for a board based on Sandpoint8245 and I have a problem.
I don't know much about Sandpoint 8245, but
> The CPU panic on line 529 in rtl8139.c. (outb(CmdReset, ioaddr + ChipCmd);)
>
> Serial port displayed:
> (
> Bad trap at PC: fffffffc, SR: 1000, vector=800
> NIP: FFFFFFFC XER: 20000000 LR: 00001288 REGS: 077ceb30 TRAP: 0800 DAR: 077CECC0
> MSR: 00001000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
>
> GPR00: 00000010 077CEC20 FFFFFF1F 00000000 0000000A 00000010 FFFFFFFB 00000000
> GPR08: 00000040 81000000 00000000 FFFFFFFF 00000020 A7AC5E24 07FFD000 080D1000
> GPR16: 31380950 8E109020 05808002 55D84040 00003032 00000001 00000000 00000001
> GPR24: 00000000 077CEEA8 077CEFC8 00000005 07FF80C8 077CEF94 07FFD6D8 00000000
> Call backtrace:
> Exception in kernel pc fffffffc signal 0
> )
>
> The value of ioaddr is 0x80000000
>
> The value of _IO_BASE outb uses is defined as 0
AFAICT the drivers/rtl8139.c has at least two problems:
- First, the prospekctive target is MIPS
because it uses KSEG1ADDR macro to obtain uncached address.
- Moreover it only works under cache-{disabled,less} CPU
because it lacks of flush_cache() before transmitting data or
reclaiming rx buffers.
thanks,
Shinya Kuribayashi
^ permalink raw reply [flat|nested] 4+ messages in thread* [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245board
2007-10-01 9:53 ` Shinya Kuribayashi
@ 2007-10-01 11:07 ` Lucas Jin
2007-10-01 17:40 ` [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245 board Scott Wood
1 sibling, 0 replies; 4+ messages in thread
From: Lucas Jin @ 2007-10-01 11:07 UTC (permalink / raw)
To: u-boot
Shinya Kuribayashi:
Thank you for your hint. I think it will be of help in the future debugging.
But my problem occurs just in the process of rtl8139 reset.
>Lucas Jin wrote:
>> Hi, all
>>
>> I am debuging RTL8139 driver for a board based on Sandpoint8245 and I have a problem.
>
>I don't know much about Sandpoint 8245, but
>
>> The CPU panic on line 529 in rtl8139.c. (outb(CmdReset, ioaddr + ChipCmd);)
>>
>> Serial port displayed:
>> (
>> Bad trap at PC: fffffffc, SR: 1000, vector=800
>> NIP: FFFFFFFC XER: 20000000 LR: 00001288 REGS: 077ceb30 TRAP: 0800 DAR: 077CECC0
>> MSR: 00001000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
>>
>> GPR00: 00000010 077CEC20 FFFFFF1F 00000000 0000000A 00000010 FFFFFFFB 00000000
>> GPR08: 00000040 81000000 00000000 FFFFFFFF 00000020 A7AC5E24 07FFD000 080D1000
>> GPR16: 31380950 8E109020 05808002 55D84040 00003032 00000001 00000000 00000001
>> GPR24: 00000000 077CEEA8 077CEFC8 00000005 07FF80C8 077CEF94 07FFD6D8 00000000
>> Call backtrace:
>> Exception in kernel pc fffffffc signal 0
>> )
>>
>> The value of ioaddr is 0x80000000
>>
>> The value of _IO_BASE outb uses is defined as 0
>
>AFAICT the drivers/rtl8139.c has at least two problems:
>
> - First, the prospekctive target is MIPS
> because it uses KSEG1ADDR macro to obtain uncached address.
>
> - Moreover it only works under cache-{disabled,less} CPU
> because it lacks of flush_cache() before transmitting data or
> reclaiming rx buffers.
>
>thanks,
>
> Shinya Kuribayashi
>
Yours
Lucas Jin
^ permalink raw reply [flat|nested] 4+ messages in thread* [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245 board
2007-10-01 9:53 ` Shinya Kuribayashi
2007-10-01 11:07 ` [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245board Lucas Jin
@ 2007-10-01 17:40 ` Scott Wood
1 sibling, 0 replies; 4+ messages in thread
From: Scott Wood @ 2007-10-01 17:40 UTC (permalink / raw)
To: u-boot
Shinya Kuribayashi wrote:
> - Moreover it only works under cache-{disabled,less} CPU
> because it lacks of flush_cache() before transmitting data or
> reclaiming rx buffers.
DMA is cache-coherent on 8245.
-Scott
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2007-10-01 17:40 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2007-09-30 2:53 [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245 board Lucas Jin
2007-10-01 9:53 ` Shinya Kuribayashi
2007-10-01 11:07 ` [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245board Lucas Jin
2007-10-01 17:40 ` [U-Boot-Users] a problem about rtl8139 driver on sandpoint8245 board Scott Wood
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