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/ --- Changes in v2: - Attend kernel test robot warnings --- 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 | 45 +++++++++++++++++++++++++++++------- drivers/mmc/core/bus.c | 4 +++- drivers/mmc/core/card.h | 3 +++ drivers/mmc/core/core.c | 48 +++++++++++++++++++++++++++++++-------- drivers/mmc/core/core.h | 2 +- drivers/mmc/core/queue.h | 1 + drivers/mmc/core/sd.c | 16 +++++++++---- drivers/mmc/core/sd_ops.c | 34 +++++++++++++++++++++++---- drivers/mmc/core/sd_ops.h | 1 + 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, 169 insertions(+), 36 deletions(-) -- 2.25.1
