From: Kenneth Lee <liguozhu@xxxxxxxxxxxxx> *WarpDrive* is a general accelerator framework for the user application to access the hardware without going through the kernel in data path. WarpDrive is the name for the whole framework. The component in kernel is called uacce, meaning "Unified/User-space-access-intended Accelerator Framework". It makes use of the capability of IOMMU to maintain a unified virtual address space between the hardware and the process. The first patch in this patchset contains document of the framework. Please refer to it for more information. WarpDrive is intended to be used with Jean Philippe Brucker's SVA patchset[1], which enables IO side page fault and PASID support. But this patchset itself is simply the first step to support the no-PASID version. The patch 1 is document of the framework. The patch 2 add uacce support. The patch 3 and 4 are drivers for Hisilicon's ZIP Accelerator. It is registered to crypto subsystem. The patch 5 adds uacce support to the accelerator driver. It then can work in either crypto or uacce mode. It can support both mode at the same time when PASID mode is added in the future. The patch 6 is is a user space sample demonstrating how WarpDrive is used. The intension of this RFC is to know if the idea is acceptable. So the focus is the uacce itself. The patch 3 and 4 will be sent to mainline by another topic. We assume they will be accepted first and we can upstream uacce. And if SVA is upstreamed, the new feature will be added accordingly. Change History: V3 changed from V2: 1. Build uacce from original IOMMU interface. V2 is built on VFIO. But the VFIO way locking the user memory in place will not work properly if the process fork a child. Because the copy-on-write strategy will make the parent process lost its page. This is not acceptable to accelerator user. 2. The kernel component is renamed to uacce from sdmdev accordingly 3. Document is updated for the new design. The Static Shared Virtual Memory concept is introduced to replace the User Memory Sharing concept. 4. Rebase to the lastest kernel (4.20.0-rc1) 5. As an RFC, this version is tested only with "test-to-pass" test case and not tested with Jean's SVA patch. V2 changed from V1: 1. Change kernel framework name from SPIMDEV (Share Parent IOMMU Mdev) to SDMDEV (Share Domain Mdev). 2. Allocate Hardware Resource when a new mdev is created (While it is allocated when the mdev is openned) 3. Unmap pages from the shared domain when the sdmdev iommu group is detached. (This procedure is necessary, but missed in V1) 4. Update document accordingly. 5. Rebase to the latest kernel (4.19.0-rc1) Refernces: [1] https://www.spinics.net/lists/kernel/msg2651481.html [2] https://github.com/Kenneth-Lee/linux-kernel-warpdrive/tree/warpdrive-sva-v0.5 [3] https://lkml.org/lkml/2018/7/22/34 Best Regards Kenneth Lee Kenneth Lee (6): uacce: Add documents for WarpDrive/uacce uacce: add uacce module crypto/hisilicon: add hisilicon Queue Manager driver crypto/hisilicon: add Hisilicon zip driver crypto: add uacce support to Hisilicon qm uacce: add user sample for uacce/warpdrive Documentation/warpdrive/warpdrive.rst | 260 ++++++ Documentation/warpdrive/wd-arch.svg | 764 ++++++++++++++++ Documentation/warpdrive/wd.svg | 526 +++++++++++ Documentation/warpdrive/wd_q_addr_space.svg | 359 ++++++++ drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/crypto/hisilicon/Kconfig | 19 +- drivers/crypto/hisilicon/Makefile | 2 + drivers/crypto/hisilicon/qm.c | 926 ++++++++++++++++++++ drivers/crypto/hisilicon/qm.h | 227 +++++ drivers/crypto/hisilicon/qm_usr_if.h | 32 + drivers/crypto/hisilicon/zip/Makefile | 2 + drivers/crypto/hisilicon/zip/zip.h | 57 ++ drivers/crypto/hisilicon/zip/zip_crypto.c | 362 ++++++++ drivers/crypto/hisilicon/zip/zip_crypto.h | 18 + drivers/crypto/hisilicon/zip/zip_main.c | 191 ++++ drivers/uacce/Kconfig | 11 + drivers/uacce/Makefile | 2 + drivers/uacce/uacce.c | 902 +++++++++++++++++++ include/linux/uacce.h | 117 +++ include/uapi/linux/uacce.h | 33 + samples/warpdrive/AUTHORS | 3 + samples/warpdrive/ChangeLog | 1 + samples/warpdrive/Makefile.am | 9 + samples/warpdrive/NEWS | 1 + samples/warpdrive/README | 32 + samples/warpdrive/autogen.sh | 3 + samples/warpdrive/cleanup.sh | 13 + samples/warpdrive/conf.sh | 4 + samples/warpdrive/configure.ac | 52 ++ samples/warpdrive/drv/hisi_qm_udrv.c | 228 +++++ samples/warpdrive/drv/hisi_qm_udrv.h | 57 ++ samples/warpdrive/drv/wd_drv.h | 19 + samples/warpdrive/test/Makefile.am | 7 + samples/warpdrive/test/test_hisi_zip.c | 150 ++++ samples/warpdrive/wd.c | 96 ++ samples/warpdrive/wd.h | 97 ++ samples/warpdrive/wd_adapter.c | 71 ++ samples/warpdrive/wd_adapter.h | 36 + 39 files changed, 5691 insertions(+), 1 deletion(-) create mode 100644 Documentation/warpdrive/warpdrive.rst create mode 100644 Documentation/warpdrive/wd-arch.svg create mode 100644 Documentation/warpdrive/wd.svg create mode 100644 Documentation/warpdrive/wd_q_addr_space.svg create mode 100644 drivers/crypto/hisilicon/qm.c create mode 100644 drivers/crypto/hisilicon/qm.h create mode 100644 drivers/crypto/hisilicon/qm_usr_if.h create mode 100644 drivers/crypto/hisilicon/zip/Makefile create mode 100644 drivers/crypto/hisilicon/zip/zip.h create mode 100644 drivers/crypto/hisilicon/zip/zip_crypto.c create mode 100644 drivers/crypto/hisilicon/zip/zip_crypto.h create mode 100644 drivers/crypto/hisilicon/zip/zip_main.c create mode 100644 drivers/uacce/Kconfig create mode 100644 drivers/uacce/Makefile create mode 100644 drivers/uacce/uacce.c create mode 100644 include/linux/uacce.h create mode 100644 include/uapi/linux/uacce.h create mode 100644 samples/warpdrive/AUTHORS create mode 100644 samples/warpdrive/ChangeLog create mode 100644 samples/warpdrive/Makefile.am create mode 100644 samples/warpdrive/NEWS create mode 100644 samples/warpdrive/README create mode 100755 samples/warpdrive/autogen.sh create mode 100755 samples/warpdrive/cleanup.sh create mode 100755 samples/warpdrive/conf.sh create mode 100644 samples/warpdrive/configure.ac create mode 100644 samples/warpdrive/drv/hisi_qm_udrv.c create mode 100644 samples/warpdrive/drv/hisi_qm_udrv.h create mode 100644 samples/warpdrive/drv/wd_drv.h create mode 100644 samples/warpdrive/test/Makefile.am create mode 100644 samples/warpdrive/test/test_hisi_zip.c create mode 100644 samples/warpdrive/wd.c create mode 100644 samples/warpdrive/wd.h create mode 100644 samples/warpdrive/wd_adapter.c create mode 100644 samples/warpdrive/wd_adapter.h -- 2.17.1
