Add support for UFS driver #93528
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Add support for UFS driver #93528
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added 10 commits
May 5, 2025 17:39
Introduce core components of the SCSI subsystem, including support for device initialization, command dispatching, and basic I/O operations. Provide foundation for future integration with UFS and other SCSI-based devices. Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Introduce initial support for the UFS subsystem in Zephyr, providing core infrastructure to enable UFS device functionality. This lays the foundation for further enhancements to the UFS subsystem in Zephyr. Key features introduced in this patch: - UFS controller initialization support. - Handling of SCSI command transfer requests. - UFS device configuration support. - Interrupt-driven UFS operations. Limitations: - Does not support task management functionality. - Does not include RPMB (Replay Protected Memory Block) support. - Asynchronous transfers are not supported. Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Add amd,versal2-ufs.yaml for AMD Versal Gen 2 UFS Host Controller. Add ufs-common.yaml for common properties of UFS Host Controllers. Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Add support for the UFS Host Controller (UFSHC) driver on the AMD Versal Gen 2 platform. The implementation includes necessary configurations for M-PHY, RMMI, and Unipro, as well as programming of vendor-specific registers during controller initialization. Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Add device tree binding for UFS disks in Zephyr, enabling interaction with UFS storage via the Zephyr disk subsystem. This binding ensures correct handling of UFS devices, including support for multiple LUNs, enabling filesystem operations in Zephyr. Key properties: - lun: Defines the Logical Unit Number (LUN) for the UFS disk, defaulting to 0. This is essential for systems with multiple LUNs. - disk-name: A required string specifying the UFS disk's name for proper registration in the disk subsystem. Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Add UFS disk driver, enabling interaction with UFS storage devices via the filesystem interface. It recognizes Logical Unit Numbers (LUNs) as separate disks and presents UFS devices as block devices for standard filesystem operations. This driver ensures UFS devices are recognized and usable within Zephyr’s filesystem. Key features: - Initialization: Initializes the UFS disk using LUN and disk-name properties from the device tree. - Disk Operations: Registers essential operations, including read, write, and ioctl. Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Add a test for the UFS subsystem to verify the functionality of UFS stack implementation. The test performs basic read operations on a UFS card after initialization. Test components: - Init: Verifies the UFS host controller can detect card presence and initialize the UFS subsystem. - Configuration: Ensures that the UFS stack reports a valid configuration for the UFS card after initialization. Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Add a test to verify the SCSI subsystem's functionality with UFS devices. Test Components: - Init Test: Verifies SCSI device initialization via the UFS host controller. - IOCTL Test: Checks SCSI IOCTL operations using SG_IO. - R/W Test: Confirms data can be written to and read from the UFS device without errors. Requirements: - UFS device must be connected. - Write operations are disabled by default (can be enabled via configuration). Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Extend disk_access test suite to support UFS disk driver. Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
Add documentation for the UFS Host Controller (UFSHC) driver, which provides a generic interface for interacting with UFS host controller devices. It is used by the UFS subsystem to manage UFS-based storage devices. The documentation covers key aspects of the UFSHC, including initialization, transfer request handling, query requests, and configuration options, helping developers understand how to integrate and work with the UFS subsystem effectively. Signed-off-by: Ajay Neeli <ajay.neeli@amd.com>
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#87201 - Reopening the closed PR |
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This pull request re-opens the PR: #87201