Re: [PATCH v4 0/9] Add SDUC Support

[Adrian Hunter <adrian.hunter@intel.com>]

On 25/08/24 10:41, Avri Altman wrote:
> Ultra Capacity SD cards (SDUC) was already introduced in SD7.0.  Those
> cards support capacity larger than 2TB and up to including 128TB. Thus,
> the address range of the card expands beyond the 32-bit command
> argument. To that end, a new command - CMD22 is defined, to carry the
> extra 6-bit upper part of the 38-bit block address that enable access to
> 128TB memory space.
> 
> SDUC capacity is agnostic to the interface mode: UHS-I and UHS-II – Same
> as SDXC.
> 
> The spec defines several extensions/modifications to the current SDXC
> cards, which we address in patches 1 - 10.  Otherwise requirements are
> out-of-scope of this change.  Specifically, CMDQ (CMD44+CMD45), and
> Extension for Video Speed Class (CMD20).
> 
> First publication of SDUC was in [1].  This series was developed and
> tested separately from [1] and does not borrow from it.
> 
> [1] https://lwn.net/Articles/982566/

Perhaps add support for mmc_test, and it would be better
if enabling SDUC was the last patch, so bisecting doesn't
leave a kernel that half-supports SDUC.

> 
> ---
> Changes in v4:
>  - Squash patches 1 & 2 (Ulf)
>  - Amend SD_OCR_2T to SD_OCR_CCS in mmc_sd_get_cid (Ulf)
>  - Use card state instead of caps2 (Ricky & Ulf)
>  - Switch patches 5 & 6 (Ulf)
> 
> Changes in v3:
>  - Some more kernel test robot fixes
>  - Fix a typo in a commit log (Ricky WU)
>  - Fix ACMD22 returned value
>  - Add 'Tested-by' tag for the whole series (Ricky WU)
> 
> Changes in v2:
>  - Attend kernel test robot warnings
> 
> ---
> 
> Avri Altman (9):
>   mmc: sd: SDUC Support Recognition
>   mmc: sd: Add Extension memory addressing
>   mmc: core: Add open-ended Ext memory addressing
>   mmc: core: Add close-ended Ext memory addressing
>   mmc: host: Always use manual-cmd23 in SDUC
>   mmc: host: Add close-ended Ext memory addressing
>   mmc: core: Allow mmc erase to carry large addresses
>   mmc: core: Add Ext memory addressing for erase
>   mmc: core: Adjust ACMD22 to SDUC
> 
>  drivers/mmc/core/block.c  | 56 ++++++++++++++++++++++++++++------
>  drivers/mmc/core/bus.c    |  4 ++-
>  drivers/mmc/core/card.h   |  3 ++
>  drivers/mmc/core/core.c   | 63 ++++++++++++++++++++++++++++-----------
>  drivers/mmc/core/core.h   | 14 +++++++--
>  drivers/mmc/core/queue.h  |  1 +
>  drivers/mmc/core/sd.c     | 36 ++++++++++++++--------
>  drivers/mmc/core/sd.h     |  2 +-
>  drivers/mmc/core/sd_ops.c | 16 ++++++++++
>  drivers/mmc/core/sd_ops.h |  1 +
>  drivers/mmc/core/sdio.c   |  2 +-
>  drivers/mmc/host/sdhci.c  | 40 +++++++++++++++++++++----
>  include/linux/mmc/card.h  |  2 +-
>  include/linux/mmc/core.h  |  1 +
>  include/linux/mmc/sd.h    |  4 +++
>  15 files changed, 195 insertions(+), 50 deletions(-)
>