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
