Currently, the QEMU-UFS emulation is implemented based on the JEDEC UFS
4.0 Specification and does not support the operation related to UFS Extended
Features which is defined with latest UFS Specifications.
This series modifies the UFS core implementation to align with the JEDEC
UFS 4.1 Specification[1], and adds a Write Booster UFS Extended Feature
supportability.
Tested: x86-64 KVM, upstream QEMU with Debian GNU/Linux 10
[1]
https://jedec.org/standards-documents/focus/flash/universal-flash-storage-ufs
Signed-off-by: Jaemyung Lee <jaemyung.lee@samsung.com>
---
Changes in v7:
- Added range check for dPinnedWriteBoosterBufferNumAllocUnits
- Added range check for dNonPinnedWriteBoosterBufferMinNumAllocUnits
- Added exception event status operation
- Fixed minimum buffer size set in WB initialization
- Fixed resize operation
- Fixed Pinned WB buffer consumption
- Fixed user_space_reduction related value
- Fixed buffer size sync timing
- Fixed flush operation
- Removed unused DEFINE_PROP varialbles
Changes in v6:
- Fix Pinned Total Written Size Calculation(2).
- Added range check for dMaxFIFOSizeForWriteBoosterPartialFlushMode
- Fix flush status check
Changes in v5:
- Fix Pinned Total Written Size Calculation.
- Fix WB related status reset timing
- Link to v4: https://lore.kernel.org/qemu-devel/20260410-write_booster-v4-0-d58a680587df@samsung.com
Changes in v4:
- Fixed MCQ idle check: skip unallocated qid
- Removed unused arguments from WB accounting functions
- Added SCSI command status guard for WB accounting at completion
Changes in v3:
- Fixed constraint check return value
- Fixed WB buffer consume amount with transfered_len
- Fixed MCQ idle check:
- Added NULL exception check
- Added CQ pending request check
- Link to v2: https://lore.kernel.org/qemu-devel/20260407-write_booster-v2-0-dd772bb30194@samsung.com
Changes in v2:
- Fixed MCQ idle check
- Added WRITE_6/WRITE_16 handling
- Fixed WB buffer consume timing
- Added constraint check
- Fixed uint64_t casting for unit calculation
---
---
Jaemyung Lee (5):
hw/ufs: Apply UFS 4.1 Specification
hw/ufs: Modify flag handling operation
hw/ufs: Add idle operation
hw/ufs: Add UFS Write Booster Support
tests/qtest: Add UFS Write Booster QTest
hw/ufs/lu.c | 102 ++++++-
hw/ufs/ufs.c | 714 ++++++++++++++++++++++++++++++++++++++++++++++---
hw/ufs/ufs.h | 49 ++++
include/block/ufs.h | 114 +++++++-
tests/qtest/ufs-test.c | 172 ++++++++++++
5 files changed, 1105 insertions(+), 46 deletions(-)
---
base-commit: 5e61afe211e82a9af15a8794a0bd29bb574e953b
change-id: 20260407-write_booster-889a06cadc59
Best regards,
--
Jaemyung Lee <jaemyung.lee@samsung.com>