mbox series

[00/10] Add SDUC Support

Message ID 20240728081154.1782120-1-avri.altman@wdc.com
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Series Add SDUC Support | expand

Message

Avri Altman July 28, 2024, 8:11 a.m. UTC 
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/

Avri Altman (10):
  mmc: sd: SDUC Support Recognition
  mmc: sd: Add SD CSD version 3.0
  mmc: sd: Add Extension memory addressing
  mmc: core: Add open-ended Ext memory addressing
  mmc: host: Always use manual-cmd23 in SDUC
  mmc: core: Add close-ended Ext memory addressing
  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  | 47 ++++++++++++++++++++++++++++------
 drivers/mmc/core/bus.c    |  4 ++-
 drivers/mmc/core/card.h   |  3 +++
 drivers/mmc/core/core.c   | 54 +++++++++++++++++++++++++++++++--------
 drivers/mmc/core/core.h   |  2 +-
 drivers/mmc/core/queue.h  |  1 +
 drivers/mmc/core/sd.c     | 16 ++++++++----
 drivers/mmc/core/sd_ops.c | 33 +++++++++++++++++++++---
 drivers/mmc/core/sd_ops.h |  4 +++
 drivers/mmc/host/sdhci.c  | 38 ++++++++++++++++++++++-----
 include/linux/mmc/card.h  |  2 +-
 include/linux/mmc/core.h  |  1 +
 include/linux/mmc/host.h  |  6 +++++
 include/linux/mmc/sd.h    |  4 +++
 14 files changed, 179 insertions(+), 36 deletions(-)