linux-kernel - Re: [PATCH] ata: Fix DVD not dectected at some Haswell platforms

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Date:	Wed, 30 Jan 2013 15:32:52 +0800
From:	joeyli <jlee@...e.com>
To:	Youquan Song <youquan.song@...el.com>
Cc:	htejun@...il.com, ming.lei@...onical.com,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	seth.heasley@...el.com, james.d.ralston@...el.com,
	Youquan Song <youquan.song@...ux.intel.com>
Subject: Re: [PATCH] ata: Fix DVD not dectected at some Haswell platforms

於 三，2013-01-30 於 12:19 -0500，Youquan Song 提到：
> There is a quirk patch 5e5a4f5d5a08c9c504fe956391ac3dae2c66556d fix the 4 ports
> IDE controller 32bit PIO mode. 
> Recently, the problem was showed at Haswell platform which includes 2 ports 
> IDE controller.
> 
> So introduce a qurik patch to disable 32bit PIO at this IDE controller. 
> 
> Signed-off-by: Youquan Song <youquan.song@...el.com>

Patch works to me for avoid DVD detection on Intel Shark Bay development
machine.

Tested-by: Lee, Chun-Yi <jlee@...e.com>


Thanks a lot!
Joey Lee

> ---
>  drivers/ata/ata_piix.c |   14 +++++++++++++-
>  1 files changed, 13 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
> index ef773e1..1993e52 100644
> --- a/drivers/ata/ata_piix.c
> +++ b/drivers/ata/ata_piix.c
> @@ -150,6 +150,7 @@ enum piix_controller_ids {
>  	tolapai_sata,
>  	piix_pata_vmw,			/* PIIX4 for VMware, spurious DMA_ERR */
>  	ich8_sata_snb,
> +	ich8_2port_sata_snb,
>  };
>  
>  struct piix_map_db {
> @@ -326,7 +327,7 @@ static const struct pci_device_id piix_pci_tbl[] = {
>  	/* SATA Controller IDE (Lynx Point) */
>  	{ 0x8086, 0x8c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
>  	/* SATA Controller IDE (Lynx Point) */
> -	{ 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
> +	{ 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
>  	/* SATA Controller IDE (Lynx Point) */
>  	{ 0x8086, 0x8c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
>  	/* SATA Controller IDE (Lynx Point-LP) */
> @@ -502,6 +503,7 @@ static const struct piix_map_db *piix_map_db_table[] = {
>  	[ich8m_apple_sata]	= &ich8m_apple_map_db,
>  	[tolapai_sata]		= &tolapai_map_db,
>  	[ich8_sata_snb]		= &ich8_map_db,
> +	[ich8_2port_sata_snb]	= &ich8_2port_map_db,
>  };
>  
>  static struct ata_port_info piix_port_info[] = {
> @@ -643,6 +645,16 @@ static struct ata_port_info piix_port_info[] = {
>  		.port_ops	= &piix_sata_ops,
>  	},
>  
> +	[ich8_2port_sata_snb] =
> +	{
> +		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16,
> +		.pio_mask	= ATA_PIO4,
> +		.mwdma_mask	= ATA_MWDMA2,
> +		.udma_mask	= ATA_UDMA6,
> +		.port_ops	= &piix_sata_ops,
> +	},
> +
> +
>  };
>  
>  static struct pci_bits piix_enable_bits[] = {


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