Hi Maya,
Thanks to remind it.
I'm struggling with something. I didn't check more since v8.
Hi Chris,
As we know, nand flash write is slower than read, because write is costly
operation.
Write operation need block erase operation. Of course, if there is free block
to write, erase will not happe
Hi Chris,
The amount of improvement from the packed commands, as from any other
eMMC4.5 feature, depends on several parameters:
1. The card support of this feature. If the card supports only the feature
interface, then you'll see no improvement when using the feature.
2. The benchmark tool used. S
Hi Maya,
On Sun, Nov 04 2012, me...@codeaurora.org wrote:
> Packed commands is a mandatory eMMC4.5 feature and is supported by all
> the card vendors.
We're still only talking about using packed writes, though, right?
> It wa proven to be beneficial for eMMC4.5 cards and harmless for non
> eMMC4
Hi Chris,
Packed commands is a mandatory eMMC4.5 feature and is supported by all the
card vendors.
It wa proven to be beneficial for eMMC4.5 cards and harmless for non
eMMC4.5 cards.
I don't see a point to hold it back while it can be enabled or disabled by
a flag and most of the code it adds is g
Hi Chris,
Can we push this change to mmc-next?
Thanks,
Maya
On Mon, July 9, 2012 10:40 pm, me...@codeaurora.org wrote:
>
> On Mon, July 9, 2012 3:13 am, Seungwon Jeon wrote:
>> Monday, July 09, 2012, Maya wrote:
>>> On Sun, July 8, 2012 4:52 pm, Seungwon Jeon wrote:
>>> > Sunday, July 08, 2012,
On Mon, July 9, 2012 3:13 am, Seungwon Jeon wrote:
> Monday, July 09, 2012, Maya wrote:
>> On Sun, July 8, 2012 4:52 pm, Seungwon Jeon wrote:
>> > Sunday, July 08, 2012, Maya wrote:
>> >> One minor comment below:
>> >>
>> >> > @@ -1278,9 +1609,15 @@ static int mmc_blk_issue_rw_rq(struct
>> mmc_q
Monday, July 09, 2012, Maya wrote:
> On Sun, July 8, 2012 4:52 pm, Seungwon Jeon wrote:
> > Sunday, July 08, 2012, Maya wrote:
> >> One minor comment below:
> >>
> >> > @@ -1278,9 +1609,15 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue
> >> *mq, struct request *rqc)
> >> >
On Sun, July 8, 2012 4:52 pm, Seungwon Jeon wrote:
> Sunday, July 08, 2012, Maya wrote:
>> One minor comment below:
>>
>> > @@ -1278,9 +1609,15 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue
>> *mq, struct request *rqc)
>> >(card->ext_csd.data_sector_size == 4096)) {
>
Sunday, July 08, 2012, Maya wrote:
> One minor comment below:
>
> > @@ -1278,9 +1609,15 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue
> *mq, struct request *rqc)
> > (card->ext_csd.data_sector_size == 4096)) {
> You can use mmc_large_sec here (instead of card->ext_csd
One minor comment below:
> @@ -1278,9 +1609,15 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue
*mq, struct request *rqc)
> (card->ext_csd.data_sector_size == 4096)) {
You can use mmc_large_sec here (instead of card->ext_csd.data_sector_size
== 4096)
Thanks,
Maya
--
This patch supports packed write command of eMMC4.5 device.
Several writes can be grouped in packed command and all data
of the individual commands can be sent in a single transfer
on the bus.
Signed-off-by: Seungwon Jeon
Reviewed-by: Maya Erez
Reviewed-by: Namjae Jeon
---
drivers/mmc/card/blo
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