linux-kernel - [PATCH v4 0/8] Export platform features from ccp driver

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Message-ID: <20230310211954.2490-1-mario.limonciello@amd.com>
Date:   Fri, 10 Mar 2023 15:19:43 -0600
From:   Mario Limonciello <mario.limonciello@....com>
To:     Jan Dąbroś <jsd@...ihalf.com>,
        Grzegorz Bernacki <gjb@...ihalf.com>,
        <Rijo-john.Thomas@....com>, <Thomas.Lendacky@....com>,
        <herbert@...dor.apana.org.au>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        <kvm@...r.kernel.org>, <linux-crypto@...r.kernel.org>,
        <linux-i2c@...r.kernel.org>
CC:     <Felix.Held@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Sumit Garg <sumit.garg@...aro.org>,
        <linux-kernel@...r.kernel.org>, <op-tee@...ts.trustedfirmware.org>
Subject: [PATCH v4 0/8] Export platform features from ccp driver

The i2c-designware-amdpsp driver communicates with a platform
features mailbox provided by the PSP.  The address used for
communication is discovered via a non-architecturally
guaranteed mechanism.

To better scale, export a feature for communication with platform
features directly from the ccp driver.

v3->v4
 Drop the ACPI ID as result of confirmation with internal team.
 Future platforms should use doorbell, so will treat Cezanne as quirk
 and assume doorbell going forward.

Mario Limonciello (8):
  crypto: ccp: Drop TEE support for IRQ handler
  crypto: ccp: Add a header for multiple drivers to use `__psp_pa`
  crypto: ccp: Move some PSP mailbox bit definitions into common header
  crypto: ccp: Add support for an interface for platform features
  crypto: ccp: Enable platform access interface on client PSP parts
  i2c: designware: Use PCI PSP driver for communication
  crypto: ccp: Add support for ringing a platform doorbell
  i2c: designware: Add doorbell support for Skyrim

 arch/x86/kvm/svm/sev.c                      |   1 +
 drivers/crypto/ccp/Makefile                 |   3 +-
 drivers/crypto/ccp/platform-access.c        | 232 ++++++++++++++++++++
 drivers/crypto/ccp/platform-access.h        |  35 +++
 drivers/crypto/ccp/psp-dev.c                |  32 +--
 drivers/crypto/ccp/psp-dev.h                |  11 +-
 drivers/crypto/ccp/sev-dev.c                |  16 +-
 drivers/crypto/ccp/sev-dev.h                |   2 +-
 drivers/crypto/ccp/sp-dev.h                 |  10 +
 drivers/crypto/ccp/sp-pci.c                 |   9 +
 drivers/crypto/ccp/tee-dev.c                |  17 +-
 drivers/i2c/busses/Kconfig                  |   2 +-
 drivers/i2c/busses/i2c-designware-amdpsp.c  | 188 ++++------------
 drivers/i2c/busses/i2c-designware-core.h    |   1 -
 drivers/i2c/busses/i2c-designware-platdrv.c |   1 -
 drivers/tee/amdtee/call.c                   |   2 +-
 drivers/tee/amdtee/shm_pool.c               |   2 +-
 include/linux/psp-platform-access.h         |  65 ++++++
 include/linux/psp-sev.h                     |   8 -
 include/linux/psp.h                         |  29 +++
 20 files changed, 461 insertions(+), 205 deletions(-)
 create mode 100644 drivers/crypto/ccp/platform-access.c
 create mode 100644 drivers/crypto/ccp/platform-access.h
 create mode 100644 include/linux/psp-platform-access.h
 create mode 100644 include/linux/psp.h

-- 
2.34.1