linux-kernel - [PATCH v6 0/4] stratix10: Add framework for asynchronous communication with SDM

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Message-Id: <20250901-sip_svc_upstream-v6-0-b4db7f07cbb2@altera.com>
Date: Mon, 01 Sep 2025 21:13:22 +0800
From: Mahesh Rao via B4 Relay <devnull+mahesh.rao.altera.com@...nel.org>
To: Dinh Nguyen <dinguyen@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Mahesh Rao <mahesh.rao@...era.com>, 
 Richard Gong <richard.gong@...el.com>, Alan Tull <atull@...nel.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Matthew Gerlach <matthew.gerlach@...era.com>, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH v6 0/4] stratix10: Add framework for asynchronous
 communication with SDM

The patch set includes the following changes:

- Add protection for querying memory objects in multi-threaded flow.
- Add support to generate and maintain message id and client id for
  asynchronous communication with SDM.
- Add framework to communicate with Secure Device Manager (SDM)
  asynchronously by sending a request and polling for response.
- Add commands for performing Remote System Update (RSU) operations
  asynchronously.
- Migrate RSU driver to use the asynchronous communication framework.

---
Changes in v6:
- Use guard() helper function for svc_mem_lock.
- Fixed comment message style according to kernel coding style.
- Added fixes tag to commit message.
- Removed id generation patch and use in house ida allocator.
- Changed lock of hashmap db lock from rcu to spinlock for better latency.

- Link to v5: https://lore.kernel.org/r/20250708-sip_svc_upstream-v5-0-9c4289256d54@altera.com

- Link to v5: https://lore.kernel.org/r/20250620-sip_svc_upstream-v5-0-732d4ac08a32@altera.com

Changes in v5:
- Use FIELD_PREP, FIELD_GET() and GENMASK() for bit
  manipulation for ids.
- Bring down probing when stratix10_svc_async_init()
  fails.
- Other minor fixes.

- Link to v4: https://lore.kernel.org/r/20250610-sip_svc_upstream-v4-0-bcd9d6089071@altera.com

Changes in v4:
- Added description for svc_mem_lock mutex.
- Wrapped commit message and comments in source
  code to kernel coding style as per coding style.
- Added minor code fixes.
- Moved variables to the top of the function
- Removed HWMON support from in the patch-set, this
  will be sent in a separate patch-set.
- Added support for RSU commands to asynchronously
  communicate with SDM.
- Migrated RSU driver to use the supported 
  asynchronous commands.

- Link to v3: https://lore.kernel.org/r/20250526-sip_svc_upstream-v3-0-6a08a4502de3@altera.com

Changes in v3:
- Changed "Stratix 10" to "Stratix10" in the commit
  message and in source code.
- Simplified stratix10_svc_add_async_client() by removing
  redundant code for async common channel initialization.
- Fixed resource cleanup on negative path in
  stratix10_svc_remove_async_client() and stratix10_svc_async_init().
- Removed optional interrupt handler support, will send the patches
  in a separate patch-set.

- Link to v2: https://lore.kernel.org/r/20250512-sip_svc_upstream-v2-0-fae5c45c059d@altera.com

Changes in v2:
- Added Reviewed by tag from Rob Herring for dt-binding
  patch.
- Resending the patch-set as there is no response from
  the maintainers for the previous patch submission.

- Link to v1: https://lore.kernel.org/r/20250422-sip_svc_upstream-v1-0-088059190f31@altera.com

---
Mahesh Rao (4):
      firmware: stratix10-svc: Add mutex in stratix10 memory management
      firmware: stratix10-svc: Add support for async communication
      firmware: stratix10-svc: Add support for RSU commands in asynchronous framework
      firmware: stratix10-rsu: Migrate RSU driver to use stratix10 asynchronous framework.

 drivers/firmware/stratix10-rsu.c                   | 272 ++++----
 drivers/firmware/stratix10-svc.c                   | 739 ++++++++++++++++++++-
 include/linux/firmware/intel/stratix10-smc.h       |  76 +++
 .../linux/firmware/intel/stratix10-svc-client.h    |  92 +++
 4 files changed, 1045 insertions(+), 134 deletions(-)
---
base-commit: 5cc61f86dff464a63b6a6e4758f26557fda4d494
change-id: 20250131-sip_svc_upstream-e78d8c9b4335

Best regards,
-- 
Mahesh Rao <mahesh.rao@...era.com>