[PATCH 0/2] scsi: ufs: ufs-pci: Intel UFS 4.0 HS-Gear5 and MCQ support

[sangram kumar yerra]

096cd6b7adf2 ("scsi: ufs: ufs-pci: Add support for Intel Nova Lake")
added the PCI ID for Intel's UFS 4.0 controller (8086:D335), reusing
the existing Meteor Lake variant operations table. That table is
missing two things this controller needs to work correctly at UFS 4.0
capability: a PA_INITIAL_ADAPT sequence for reliable HS-Gear5 link
training, and the MCQ resource/runtime-config hooks required for
ufshcd_alloc_mcq() to succeed. Without either, the controller still
works, but silently falls back to Gear5 link instability or legacy
single-doorbell mode respectively.

Patch 1 adds a pwr_change_notify hook that configures
PA_INITIAL_ADAPT (resetting to the default PA_NO_ADAPT otherwise)
before Gear5 power mode changes.

Patch 2 adds the mcq_config_resource and op_runtime_config hooks,
with the OPR register offsets and stride this controller uses.

Both were validated on real NVL silicon: a 10-cycle reboot trial (5
minutes monitored each) with this exact configuration showed zero
UIC-layer errors throughout, and MCQ hardware queues were confirmed
carrying real doorbell traffic at the documented addresses.

sangram kumar yerra (2):
  scsi: ufs: ufs-pci: Add support for Intel UFS 4.0 HS-Gear5
  scsi: ufs: ufs-pci: Add MCQ support for Intel UFS 4.0 controllers

 drivers/ufs/host/ufshcd-pci.c | 59 +++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)

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2.34.1