[PATCH V5 00/13] mmc: Add Command Queue support

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

Hi

Here is V5 of the hardware command queue patches without the software
command queue patches.

HW CMDQ offers 25% - 50% better random multi-threaded I/O.  I see a slight
2% drop in sequential read speed but no change to sequential write.


Changes since V4:
      mmc: core: Add mmc_retune_hold_now()
	Add explanation to commit message.
      mmc: host: Add CQE interface
	Add comments to callback declarations.
      mmc: core: Turn off CQE before sending commands
	Add explanation to commit message.
      mmc: core: Add support for handling CQE requests
	Add comments as requested by Ulf.
      mmc: core: Remove unused MMC_CAP2_PACKED_CMD
	New patch.
      mmc: mmc: Enable Command Queuing
	Adjust for removal of MMC_CAP2_PACKED_CMD.
	Add a comment about Packed Commands.
      mmc: mmc: Enable CQE's
	Remove un-necessary check for MMC_CAP2_CQE
      mmc: block: Use local variables in mmc_blk_data_prep()
	New patch.
      mmc: block: Prepare CQE data
	Adjust due to "mmc: block: Use local variables in mmc_blk_data_prep()"
	Remove priority setting.
	Add explanation to commit message.
      mmc: cqhci: support for command queue enabled host
	Fix transfer descriptor setting in cqhci_set_tran_desc() for 32-bit DMA

Changes since V3:
	Adjusted ...blk_end_request...() for new block status codes
	Fixed CQHCI transaction descriptor for "no DCMD" case

Changes since V2:
	Dropped patches that have been applied.
	Re-based
	Added "mmc: sdhci-pci: Add CQHCI support for Intel GLK"

Changes since V1:

	"Share mmc request array between partitions" is dependent
	on changes in "Introduce queue semantics", so added that
	and block fixes:

	Added "Fix is_waiting_last_req set incorrectly"
	Added "Fix cmd error reset failure path"
	Added "Use local var for mqrq_cur"
	Added "Introduce queue semantics"

Changes since RFC:

	Re-based on next.
	Added comment about command queue priority.
	Added some acks and reviews.


Adrian Hunter (12):
      mmc: core: Add mmc_retune_hold_now()
      mmc: core: Add members to mmc_request and mmc_data for CQE's
      mmc: host: Add CQE interface
      mmc: core: Turn off CQE before sending commands
      mmc: core: Add support for handling CQE requests
      mmc: core: Remove unused MMC_CAP2_PACKED_CMD
      mmc: mmc: Enable Command Queuing
      mmc: mmc: Enable CQE's
      mmc: block: Use local variables in mmc_blk_data_prep()
      mmc: block: Prepare CQE data
      mmc: block: Add CQE support
      mmc: sdhci-pci: Add CQHCI support for Intel GLK

Venkat Gopalakrishnan (1):
      mmc: cqhci: support for command queue enabled host

 drivers/mmc/core/block.c          |  238 +++++++-
 drivers/mmc/core/block.h          |    7 +
 drivers/mmc/core/bus.c            |    7 +
 drivers/mmc/core/core.c           |  178 +++++-
 drivers/mmc/core/host.c           |    6 +
 drivers/mmc/core/host.h           |    1 +
 drivers/mmc/core/mmc.c            |   42 +-
 drivers/mmc/core/queue.c          |  273 ++++++++-
 drivers/mmc/core/queue.h          |   42 +-
 drivers/mmc/host/Kconfig          |   14 +
 drivers/mmc/host/Makefile         |    1 +
 drivers/mmc/host/cqhci.c          | 1154 +++++++++++++++++++++++++++++++++++++
 drivers/mmc/host/cqhci.h          |  240 ++++++++
 drivers/mmc/host/sdhci-pci-core.c |  153 ++++-
 include/linux/mmc/core.h          |   18 +-
 include/linux/mmc/host.h          |   63 +-
 include/trace/events/mmc.h        |   36 +-
 17 files changed, 2412 insertions(+), 61 deletions(-)
 create mode 100644 drivers/mmc/host/cqhci.c
 create mode 100644 drivers/mmc/host/cqhci.h


Regards
Adrian