linux-kernel - Re: sdio: bad CISTPL

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Date:	Tue, 24 Jun 2008 11:34:53 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Nicolas Pitre <nico@....org>
CC:	Pierre Ossman <drzeus@...eus.cx>,
	ARM Linux Mailing List 
	<linux-arm-kernel@...ts.arm.linux.org.uk>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: sdio: bad CISTPL_FUNCE error

Nicolas Pitre :
> On Mon, 23 Jun 2008, Nicolas Ferre wrote:
> 
>> Here is the log :
>> mmc0: bad function CISTPL_FUNCE size 28 type 1
> 
> If you look in cistpl_funce_func() you'll find this code:
> 
>         vsn = func->card->cccr.sdio_vsn;
>         min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
>         if (size < min_size || buf[0] != 1)
>                 return -EINVAL;
> 
> I suspect your card might be buggy wrt the SDIO standard.
> 
> You could try printing out the value of vsn here, and then hardcode it 
> to SDIO_SDIO_REV_1_00 to see if that helps.

Indeed, I hardcode the value with SDIO_SDIO_REV_1_00 and the card 
seems to identify itself better :

vsn = 0x1, buf[0] = 0x1
mmc0: starting CMD52 arg 0020e400 flags 00000195
Sending command 52 as 00001074, arg = 0020E400, blocks = 0, length = 0 (MR = 00001B01)
MCI irq: status = 0000C1E5, C07F0001, 00000001
Command ready
Completed command
Status = 00000001/0000c1e5 [000010FF 00000000 00000000 00000000]
mmc0: req done (CMD52): 0: 000010ff 00000000 00000000 00000000
mmc0: read tpl 0xff
mmc0: new SDIO card at address 0001

So far, so good...

But when going to the next step, it hangs in sdio_uart probing :
mmc0: starting CMD52 arg 800220c0 flags 00000195
Sending command 52 as 00001074, arg = 800220C0, blocks = 0, length = 0 (MR = 00001B01)
MCI irq: status = 0000C1E5, C07F0001, 00000001
Command ready
Completed command
Status = 00000001/0000c1e5 [000010C0 00000000 00000000 00000000]
mmc0: req done (CMD52): 0: 000010c0 00000000 00000000 00000000
mmc0: starting CMD52 arg 80022201 flags 00000195
Sending command 52 as 00001074, arg = 80022201, blocks = 0, length = 0 (MR = 00001B01)
MCI irq: status = 0000C1E5, C07F0001, 00000001
Command ready
Completed command
Status = 00000001/0000c1e5 [00001101 00000000 00000000 00000000]
mmc0: req done (CMD52): 0: 00001101 00000000 00000000 00000000
sdio_uart: probe of mmc0:0001:1 failed with error -34

It seems that I have a out of range error in R5 now...

Regards,
-- 
Nicolas Ferre

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