All of lore.kernel.org
 help / color / mirror / Atom feed
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
To: linux-mmc@vger.kernel.org
Cc: linux-sh@vger.kernel.org, Ian Molton <ian@mnementh.co.uk>
Subject: [PATCH/RESEND] mmc: tmio_mmc: allow multi-element scatter-gather
Date: Thu, 11 Nov 2010 11:15:06 +0000	[thread overview]
Message-ID: <Pine.LNX.4.64.1011111214020.15747@axis700.grange> (raw)

The driver is capable of handling multi-element sg lists in both PIO and DMA
modes. In DMA mode this also allows to use the DMA sg capability more
efficiently and almost doubles the throughput.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
---

Sorry, one of the addresses was wrong last time, resending to all again to 
simplify commenting.

 drivers/mmc/host/tmio_mmc.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index e7765a8..9034414 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -864,10 +864,14 @@ static int __devinit tmio_mmc_probe(struct platform_device *dev)
 		goto host_free;
 
 	mmc->ops = &tmio_mmc_ops;
-	mmc->caps = MMC_CAP_4_BIT_DATA;
-	mmc->caps |= pdata->capabilities;
+	mmc->caps = MMC_CAP_4_BIT_DATA | pdata->capabilities;
 	mmc->f_max = pdata->hclk;
 	mmc->f_min = mmc->f_max / 512;
+	mmc->max_segs = 32;
+	mmc->max_blk_size = 512;
+	mmc->max_blk_count = PAGE_CACHE_SIZE / mmc->max_blk_size * mmc->max_segs;
+	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
+	mmc->max_seg_size = mmc->max_req_size;
 	if (pdata->ocr_mask)
 		mmc->ocr_avail = pdata->ocr_mask;
 	else
-- 
1.7.2.3


WARNING: multiple messages have this Message-ID (diff)
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
To: linux-mmc@vger.kernel.org
Cc: linux-sh@vger.kernel.org, Ian Molton <ian@mnementh.co.uk>
Subject: [PATCH/RESEND] mmc: tmio_mmc: allow multi-element scatter-gather lists (fwd)
Date: Thu, 11 Nov 2010 12:15:06 +0100 (CET)	[thread overview]
Message-ID: <Pine.LNX.4.64.1011111214020.15747@axis700.grange> (raw)

The driver is capable of handling multi-element sg lists in both PIO and DMA
modes. In DMA mode this also allows to use the DMA sg capability more
efficiently and almost doubles the throughput.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
---

Sorry, one of the addresses was wrong last time, resending to all again to 
simplify commenting.

 drivers/mmc/host/tmio_mmc.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index e7765a8..9034414 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -864,10 +864,14 @@ static int __devinit tmio_mmc_probe(struct platform_device *dev)
 		goto host_free;
 
 	mmc->ops = &tmio_mmc_ops;
-	mmc->caps = MMC_CAP_4_BIT_DATA;
-	mmc->caps |= pdata->capabilities;
+	mmc->caps = MMC_CAP_4_BIT_DATA | pdata->capabilities;
 	mmc->f_max = pdata->hclk;
 	mmc->f_min = mmc->f_max / 512;
+	mmc->max_segs = 32;
+	mmc->max_blk_size = 512;
+	mmc->max_blk_count = PAGE_CACHE_SIZE / mmc->max_blk_size * mmc->max_segs;
+	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
+	mmc->max_seg_size = mmc->max_req_size;
 	if (pdata->ocr_mask)
 		mmc->ocr_avail = pdata->ocr_mask;
 	else
-- 
1.7.2.3


             reply	other threads:[~2010-11-11 11:15 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-11 11:15 Guennadi Liakhovetski [this message]
2010-11-11 11:15 ` [PATCH/RESEND] mmc: tmio_mmc: allow multi-element scatter-gather lists (fwd) Guennadi Liakhovetski
2011-01-05 19:32 ` [PATCH/RESEND] mmc: tmio_mmc: allow multi-element Chris Ball
2011-01-05 19:32   ` [PATCH/RESEND] mmc: tmio_mmc: allow multi-element scatter-gather lists (fwd) Chris Ball

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=Pine.LNX.4.64.1011111214020.15747@axis700.grange \
    --to=g.liakhovetski@gmx.de \
    --cc=ian@mnementh.co.uk \
    --cc=linux-mmc@vger.kernel.org \
    --cc=linux-sh@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.