linux-kernel - Re: [git patches] libata updates

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Message-ID: <4ACAC665.7070109@garzik.org>
Date:	Tue, 06 Oct 2009 00:24:05 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
CC:	"Jung-Ik (John) Lee" <jilee@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-ide@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Grant Grundler <grundler@...gle.com>,
	Gwendal Gringo <gwendal@...gle.com>
Subject: Re: [git patches] libata updates

On 09/28/2009 11:34 AM, Bartlomiej Zolnierkiewicz wrote:
> Thanks, your patch looks good to me but since there are still some
> leftover issues left we would also need something like the incremental
> patch below:
>
> From: Bartlomiej Zolnierkiewicz<bzolnier@...il.com>
> Subject: [PATCH] pata_atp867x: PIO support fixes
>
> * use  8 clk setting for active clocks == 7 (was 12 clk)
> * use 12 clk setting for active clocks>  12 (was  8 clk)
> * do 66MHz bus fixup before mapping active clocks
> * fix setup of PIO command timings
>
> Signed-off-by: Bartlomiej Zolnierkiewicz<bzolnier@...il.com>
> ---
>   drivers/ata/pata_atp867x.c |   36 +++++++++++++++++++-----------------
>   1 file changed, 19 insertions(+), 17 deletions(-)
>
> Index: b/drivers/ata/pata_atp867x.c
> ===================================================================
> --- a/drivers/ata/pata_atp867x.c
> +++ b/drivers/ata/pata_atp867x.c
> @@ -155,30 +155,31 @@ static int atp867x_get_active_clocks_shi
>   	struct atp867x_priv *dp = ap->private_data;
>   	unsigned char clocks = clk;
>
> +	/*
> +	 * Doc 6.6.9: increase the clock value by 1 for safer PIO speed
> +	 * on 66MHz bus
> +	 */
> +	if (dp->pci66mhz)
> +		clocks++;
> +
>   	switch (clocks) {
>   	case 0:
>   		clocks = 1;
>   		break;
> -	case 1 ... 7:
> -		break;
> -	case 9 ... 12:
> -		clocks = 7;
> +	case 1 ... 6:
>   		break;
>   	default:
>   		printk(KERN_WARNING "ATP867X: active %dclk is invalid. "
> -			"Using default 8clk.\n", clk);
> +			"Using 12clk.\n", clk);
> +	case 9 ... 12:
> +		clocks = 7;	/* 12 clk */
> +		break;
> +	case 7:
>   	case 8:	/* default 8 clk */
>   		clocks = 0;
>   		goto active_clock_shift_done;
>   	}
>
> -	/*
> -	 * Doc 6.6.9: increase the clock value by 1 for safer PIO speed
> -	 * on 66MHz bus
> -	 */
> -	if (dp->pci66mhz&&  clocks<  7)
> -		clocks++;
> -
>   active_clock_shift_done:
>   	return clocks<<  ATP867X_IO_PIOSPD_ACTIVE_SHIFT;
>   }
> @@ -193,7 +194,8 @@ static int atp867x_get_recover_clocks_sh
>   		break;
>   	case 1 ... 11:
>   		break;
> -	case 13: case 14:
> +	case 13:
> +	case 14:
>   		--clocks;	/* by the spec */
>   		break;
>   	case 15:
> @@ -235,16 +237,16 @@ static void atp867x_set_piomode(struct a
>   	iowrite8(b, dp->dma_mode);
>
>   	b = atp867x_get_active_clocks_shifted(ap, t.active) |
> -		atp867x_get_recover_clocks_shifted(t.recover);
> +	    atp867x_get_recover_clocks_shifted(t.recover);
>
>   	if (adev->devno&  1)
>   		iowrite8(b, dp->slave_piospd);
>   	else
>   		iowrite8(b, dp->mstr_piospd);
>
> -	/*
> -	 * use the same value for comand timing as for PIO timimg
> -	 */
> +	b = atp867x_get_active_clocks_shifted(ap, t.act8b) |
> +	    atp867x_get_recover_clocks_shifted(t.rec8b);
> +
>   	iowrite8(b, dp->eightb_piospd);
>   }
>
>

This was incremental to the previous patch, or upstream?

	Jeff


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