This series adds support for an 0penCAPI device in a QEMU guest. It builds on top of the existing ocxl driver + http://patchwork.ozlabs.org/patch/1177999/
The ocxl module registers either a pci driver or a platform driver, based on the environment (bare-metal (powernv) or pseries). Roughly 4/5 of the code is common between the 2 types of driver: - PCI implementation - mmio operations - link management - sysfs folders - page fault and context handling The differences in implementation are essentially based on the interact with the opal api(s) defined in the host. Several hcalls have been defined (extension of the PAPR) to: - configure the Sceduled Process Area - get specific AFU information - allocated irq - handle page fault and process element When the code needs to call a platform-specific implementation, it does so through an API. The powervn and pseries implementations each describe their own definition. See struct ocxl_backend_ops. It has been tested in a bare-metal and QEMU environment using the memcpy and the AFP AFUs. christophe lombard (3): ocxl: Introduce implementation-specific API ocxl: Add pseries-specific code powerpc/pseries: Fixup config space size of OpenCAPI devices arch/powerpc/platforms/pseries/pci.c | 9 + drivers/misc/ocxl/Makefile | 3 + drivers/misc/ocxl/config.c | 7 +- drivers/misc/ocxl/link.c | 31 +- drivers/misc/ocxl/main.c | 9 + drivers/misc/ocxl/ocxl_internal.h | 25 ++ drivers/misc/ocxl/powernv.c | 88 ++++++ drivers/misc/ocxl/pseries.c | 450 +++++++++++++++++++++++++++ 8 files changed, 603 insertions(+), 19 deletions(-) create mode 100644 drivers/misc/ocxl/powernv.c create mode 100644 drivers/misc/ocxl/pseries.c -- 2.21.0