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author | Martin K. Petersen <martin.petersen@oracle.com> | 2025-09-09 22:53:10 -0400 |
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committer | Martin K. Petersen <martin.petersen@oracle.com> | 2025-09-09 22:53:10 -0400 |
commit | d76afd8d2dc43d841b84a9f539b9f84ff79d055c (patch) | |
tree | fd489b6fb3131f22c34aab45fcc6b0788b85e83a /rust/helpers/bitops.c | |
parent | 7dc0d13d752986a50f6876806a100c97d3fbdcae (diff) | |
parent | bc5dbf7739594b05c673ab3905471257be9921e7 (diff) |
Merge patch series "Simplify MCQ resource mapping"
Nitin Rawat <nitin.rawat@oss.qualcomm.com> says:
The patch series simplifies the UFS MCQ (Multi Circular Queue)
resource mapping in the Qualcomm UFS host controller driver by
replacing the complex multi-resource approach with a streamlined
single-resource implementation.
The current MCQ implementation uses multiple separate resource
mappings (RES_UFS, RES_MCQ, RES_MCQ_SQD, RES_MCQ_VS) with dynamic
resource allocation, which increases code complexity and potential for
resource mapping errors. This approach also doesn't align with the
device tree binding specification that defines a single 'mcq' memory
region.
Replace the multi-resource mapping with a single "mcq" resource that
encompasses the entire MCQ configuration space. The doorbell registers
(SQD, CQD, SQIS, CQIS) are accessed using predefined offsets relative
to the MCQ base address, providing clearer memory layout organization.
Tested on Qualcomm platforms SM8650 and SM8750 with UFS MCQ enabled.
Changes from v3:
1. Addressed Krzysztof comment to separate device tree and driver
patch independently in different patch series. This series caters
driver changes.
2. Addressed Manivannan's change to update commit text and remove
redundant null check in mcq code.
3. Addressed Manivannan's to Update few offsets as fixed definition
instead of enum.
Changes from v2:
1. Removed dt-bindings patch as existing binding supports required
reg-names format.
2. Added patch to refactor MCQ register dump logic for new resource
mapping.
3. Added patch to remove unused ufshcd_res_info structure from UFS core.
4. Changed reg-names from "ufs_mem" to "std" in device tree patches.
5. Reordered patches with driver changes first, then device tree changes.
6. Updated SM8750 MCQ region size from 0x2000 to 0x15000
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'rust/helpers/bitops.c')
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