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* [PATCH v2] mmc: tmio: Add MMC_CAP_ERASE to allow erase/discard/trim requests
@ 2019-11-15 13:44 Eugeniu Rosca
  2019-11-15 13:51 ` Wolfram Sang
  2019-11-18  9:08 ` Ulf Hansson
  0 siblings, 2 replies; 3+ messages in thread
From: Eugeniu Rosca @ 2019-11-15 13:44 UTC (permalink / raw)
  To: Ulf Hansson, Wolfram Sang, Masahiro Yamada
  Cc: linux-mmc, linux-renesas-soc, linux-kernel, Eugeniu Rosca,
	Eugeniu Rosca, Andrew Gabbasov, Harish Jenny K N

Isolated initially to renesas_sdhi_internal_dmac [1], Ulf suggested
adding MMC_CAP_ERASE to the TMIO mmc core:

On Fri, Nov 15, 2019 at 10:27:25AM +0100, Ulf Hansson wrote:
 -- snip --
 This test and due to the discussions with Wolfram and you in this
 thread, I would actually suggest that you enable MMC_CAP_ERASE for all
 tmio variants, rather than just for this particular one.

 In other words, set the cap in tmio_mmc_host_probe() should be fine,
 as it seems none of the tmio variants supports HW busy detection at
 this point.
 -- snip --

Testing on R-Car H3ULCB-KF doesn't reveal any issues (v5.4-rc7):

root@rcar-gen3:~# lsblk
NAME         MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
mmcblk0      179:0    0 59.2G  0 disk  <--- eMMC
mmcblk0boot0 179:8    0    4M  1 disk
mmcblk0boot1 179:16   0    4M  1 disk
mmcblk1      179:24   0   30G  0 disk  <--- SD card

root@rcar-gen3:~# time blkdiscard /dev/mmcblk0
real    0m8.659s
user    0m0.001s
sys     0m1.920s

root@rcar-gen3:~# time blkdiscard /dev/mmcblk1
real    0m1.176s
user    0m0.001s
sys     0m0.124s

[1] https://lore.kernel.org/linux-renesas-soc/20191112134808.23546-1-erosca@de.adit-jv.com/

Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Andrew Gabbasov <andrew_gabbasov@mentor.com>
Originally-by: Harish Jenny K N <harish_kandiga@mentor.com>
Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
---
 drivers/mmc/host/tmio_mmc_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index 9b6e1001e77c..dec5a99f52cf 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -1184,7 +1184,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
 	if (ret == -EPROBE_DEFER)
 		return ret;
 
-	mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities;
+	mmc->caps |= MMC_CAP_ERASE | MMC_CAP_4_BIT_DATA | pdata->capabilities;
 	mmc->caps2 |= pdata->capabilities2;
 	mmc->max_segs = pdata->max_segs ? : 32;
 	mmc->max_blk_size = TMIO_MAX_BLK_SIZE;
-- 
2.24.0

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH v2] mmc: tmio: Add MMC_CAP_ERASE to allow erase/discard/trim requests
  2019-11-15 13:44 [PATCH v2] mmc: tmio: Add MMC_CAP_ERASE to allow erase/discard/trim requests Eugeniu Rosca
@ 2019-11-15 13:51 ` Wolfram Sang
  2019-11-18  9:08 ` Ulf Hansson
  1 sibling, 0 replies; 3+ messages in thread
From: Wolfram Sang @ 2019-11-15 13:51 UTC (permalink / raw)
  To: Eugeniu Rosca
  Cc: Ulf Hansson, Wolfram Sang, Masahiro Yamada, linux-mmc,
	linux-renesas-soc, linux-kernel, Eugeniu Rosca, Andrew Gabbasov,
	Harish Jenny K N

[-- Attachment #1: Type: text/plain, Size: 1726 bytes --]

On Fri, Nov 15, 2019 at 02:44:30PM +0100, Eugeniu Rosca wrote:
> Isolated initially to renesas_sdhi_internal_dmac [1], Ulf suggested
> adding MMC_CAP_ERASE to the TMIO mmc core:
> 
> On Fri, Nov 15, 2019 at 10:27:25AM +0100, Ulf Hansson wrote:
>  -- snip --
>  This test and due to the discussions with Wolfram and you in this
>  thread, I would actually suggest that you enable MMC_CAP_ERASE for all
>  tmio variants, rather than just for this particular one.
> 
>  In other words, set the cap in tmio_mmc_host_probe() should be fine,
>  as it seems none of the tmio variants supports HW busy detection at
>  this point.
>  -- snip --
> 
> Testing on R-Car H3ULCB-KF doesn't reveal any issues (v5.4-rc7):
> 
> root@rcar-gen3:~# lsblk
> NAME         MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
> mmcblk0      179:0    0 59.2G  0 disk  <--- eMMC
> mmcblk0boot0 179:8    0    4M  1 disk
> mmcblk0boot1 179:16   0    4M  1 disk
> mmcblk1      179:24   0   30G  0 disk  <--- SD card
> 
> root@rcar-gen3:~# time blkdiscard /dev/mmcblk0
> real    0m8.659s
> user    0m0.001s
> sys     0m1.920s
> 
> root@rcar-gen3:~# time blkdiscard /dev/mmcblk1
> real    0m1.176s
> user    0m0.001s
> sys     0m0.124s
> 
> [1] https://lore.kernel.org/linux-renesas-soc/20191112134808.23546-1-erosca@de.adit-jv.com/
> 
> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
> Cc: Andrew Gabbasov <andrew_gabbasov@mentor.com>
> Originally-by: Harish Jenny K N <harish_kandiga@mentor.com>
> Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
> Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>

Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>


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^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH v2] mmc: tmio: Add MMC_CAP_ERASE to allow erase/discard/trim requests
  2019-11-15 13:44 [PATCH v2] mmc: tmio: Add MMC_CAP_ERASE to allow erase/discard/trim requests Eugeniu Rosca
  2019-11-15 13:51 ` Wolfram Sang
@ 2019-11-18  9:08 ` Ulf Hansson
  1 sibling, 0 replies; 3+ messages in thread
From: Ulf Hansson @ 2019-11-18  9:08 UTC (permalink / raw)
  To: Eugeniu Rosca
  Cc: Wolfram Sang, Masahiro Yamada, linux-mmc, Linux-Renesas,
	Linux Kernel Mailing List, Eugeniu Rosca, Andrew Gabbasov,
	Harish Jenny K N

On Fri, 15 Nov 2019 at 14:45, Eugeniu Rosca <erosca@de.adit-jv.com> wrote:
>
> Isolated initially to renesas_sdhi_internal_dmac [1], Ulf suggested
> adding MMC_CAP_ERASE to the TMIO mmc core:
>
> On Fri, Nov 15, 2019 at 10:27:25AM +0100, Ulf Hansson wrote:
>  -- snip --
>  This test and due to the discussions with Wolfram and you in this
>  thread, I would actually suggest that you enable MMC_CAP_ERASE for all
>  tmio variants, rather than just for this particular one.
>
>  In other words, set the cap in tmio_mmc_host_probe() should be fine,
>  as it seems none of the tmio variants supports HW busy detection at
>  this point.
>  -- snip --
>
> Testing on R-Car H3ULCB-KF doesn't reveal any issues (v5.4-rc7):
>
> root@rcar-gen3:~# lsblk
> NAME         MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
> mmcblk0      179:0    0 59.2G  0 disk  <--- eMMC
> mmcblk0boot0 179:8    0    4M  1 disk
> mmcblk0boot1 179:16   0    4M  1 disk
> mmcblk1      179:24   0   30G  0 disk  <--- SD card
>
> root@rcar-gen3:~# time blkdiscard /dev/mmcblk0
> real    0m8.659s
> user    0m0.001s
> sys     0m1.920s
>
> root@rcar-gen3:~# time blkdiscard /dev/mmcblk1
> real    0m1.176s
> user    0m0.001s
> sys     0m0.124s
>
> [1] https://lore.kernel.org/linux-renesas-soc/20191112134808.23546-1-erosca@de.adit-jv.com/
>
> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
> Cc: Andrew Gabbasov <andrew_gabbasov@mentor.com>
> Originally-by: Harish Jenny K N <harish_kandiga@mentor.com>
> Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
> Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/tmio_mmc_core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
> index 9b6e1001e77c..dec5a99f52cf 100644
> --- a/drivers/mmc/host/tmio_mmc_core.c
> +++ b/drivers/mmc/host/tmio_mmc_core.c
> @@ -1184,7 +1184,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
>         if (ret == -EPROBE_DEFER)
>                 return ret;
>
> -       mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities;
> +       mmc->caps |= MMC_CAP_ERASE | MMC_CAP_4_BIT_DATA | pdata->capabilities;
>         mmc->caps2 |= pdata->capabilities2;
>         mmc->max_segs = pdata->max_segs ? : 32;
>         mmc->max_blk_size = TMIO_MAX_BLK_SIZE;
> --
> 2.24.0
>

^ permalink raw reply	[flat|nested] 3+ messages in thread

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Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2019-11-15 13:44 [PATCH v2] mmc: tmio: Add MMC_CAP_ERASE to allow erase/discard/trim requests Eugeniu Rosca
2019-11-15 13:51 ` Wolfram Sang
2019-11-18  9:08 ` Ulf Hansson

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