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Date: Tue, 29 Sep 2015 18:06:17 -0700 From: Ashutosh Dixit <ashutosh.dixit@...el.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-kernel@...r.kernel.org Cc: Arnd Bergmann <arnd@...db.de>, Sakari Ailus <sakari.ailus@...ux.intel.com>, David Woodhouse <David.Woodhouse@...el.com>, Joerg Roedel <joro@...tes.org>, iommu@...ts.linux-foundation.org, Dasaratharaman Chandramouli <dasaratharaman.chandramouli@...el.com>, Ashutosh Dixit <ashutosh.dixit@...el.com>, Sudeep Dutt <sudeep.dutt@...el.com>, Nikhil Rao <nikhil.rao@...el.com> Subject: [PATCH char-misc-next v2 00/22] misc: mic: Enable COSM and remaining SCIF functionality Changelog: ========= v1 => v2: * Use existing patches for IOMMU IOVA separation by Sakari Alius. These patches are being sent via char-misc since this patch series has a dependency on them. The IOMMU patches can be dropped once they are merged in via the iommu tree * Add new dmaengine API instead of overloading the memcpy API * Bug fixes and checkpatch cleanups since last post v1: Initial post @ https://lkml.org/lkml/2015/7/27/958 The Symmetric Communication Interface (SCIF) API was accepted upstream during the v4.2 merge window @ https://lkml.org/lkml/2015/3/30/865. This patch series completes the implementation of the SCIF API and also introduces the MIC Coprocessor State Management (COSM) drivers. The first three patches break the IOMMU IOVA out of the IOMMU and make it into a separate module. These patches were submitted in the IOMMU tree but are being resent via char-misc since they are not available upstream and the SCIF patches depend on them. The first three patches can be dropped if they have been merged via the IOMMU tree. Patch 4 solves a build issue with IOMMU IOVA and patch 5 extends the DMA engine API to support MIC X100 status descriptor writes. Patch 6 introduces SCIF poll which allows user and kernel mode clients to block for events on a SCIF endpoint. Patch 7 introduces support for SCIF kernel mode clients. SCIF clients are probed when new SCIF nodes come online. Similarly the client remove method is called as SCIF nodes go offline. The SCIF client framework makes use of the SCIF peer bus infrastructure submitted previously. Patches 8 through 14 are a re-factoring of functionality for boot, shutdown and reset of MIC cards. This functionality, called COSM, was previously present in the MIC host driver but has now been re-factored into a separate driver so that it can be shared across multiple generations of MIC products. The MIC sysfs interface documented earlier has been updated. Further, the COSM host driver communicates with a COSM client on the card using SCIF. COSM is therefore the first kernel mode SCIF client and demonstrates the use of a subset of the SCIF API. Patch 15 onward completes the SCIF implementation by enabling the following SCIF Remote Memory Access (RMA) functionality: a. Memory registration to pin and unpin pages b. Remote Memory mapping for low latency CPU accesses c. Remote DMA (RDMA) for high bandwidth DMA transfers d. Fence mechanisms to synchronize RDMAs Documentation/mic/scif_overview.txt contains more information about SCIF. This patch series is divided into 22 patches as follows: 1) iommu: iova: Move iova cache management to the iova library 2) iommu: iova: Export symbols 3) iommu: Make the iova library a module 4) Allow iova to be used without requiring IOMMU_SUPPORT 5) Add support to program MIC x100 status descriptiors 6) SCIF poll 7) Support for kernel mode SCIF clients 8) MIC COSM bus 9) Coprocessor State Management (COSM) driver 10) COSM SCIF server 11) COSM client driver 12) Remove COSM functionality from the MIC host driver 13) Remove COSM functionality from the MIC card driver 14) Update MIC host daemon with COSM changes 15) SCIF RMA header file and IOCTL changes 16) SCIF RMA header file 17) SCIF memory registration and unregistration 18) SCIF RMA list operations 19) SCIF remote memory map/unmap interface 20) SCIF DMA and CPU copy interface 21) SCIF fence 22) SCIF RMA nodeqp and minor miscellaneous changes These patches have also been scanned by Fengguang Wu's 0-day infrastructure and no issues have been reported. Ashutosh Dixit (9): misc: mic: SCIF poll misc: mic: Add support for kernel mode SCIF clients misc: mic: MIC COSM bus misc: mic: Coprocessor State Management (COSM) driver misc: mic: COSM SCIF server misc: mic: COSM client driver misc: mic: Remove COSM functionality from the MIC host driver misc: mic: Remove COSM functionality from the MIC card driver misc: mic: Update MIC host daemon with COSM changes Sakari Ailus (3): iommu: iova: Move iova cache management to the iova library iommu: iova: Export symbols iommu: Make the iova library a module Siva Yerramreddy (1): dma: Add support to program MIC x100 status descriptiors Sudeep Dutt (9): iommu: Allow iova to be used without requiring IOMMU_SUPPORT misc: mic: SCIF RMA header file and IOCTL changes misc: mic: SCIF RMA header file misc: mic: SCIF memory registration and unregistration misc: mic: SCIF RMA list operations misc: mic: SCIF remote memory map/unmap interface misc: mic: SCIF DMA and CPU copy interface misc: mic: SCIF fence misc: mic: SCIF RMA nodeqp and minor miscellaneous changes Documentation/ABI/testing/sysfs-class-mic.txt | 29 +- Documentation/mic/mic_overview.txt | 31 +- Documentation/mic/mpssd/mpss | 4 +- Documentation/mic/mpssd/mpssd.c | 362 +++-- Documentation/mic/mpssd/mpssd.h | 1 + drivers/dma/mic_x100_dma.c | 39 +- drivers/iommu/Kconfig | 6 +- drivers/iommu/intel-iommu.c | 6 +- drivers/iommu/iova.c | 97 +- drivers/misc/mic/Kconfig | 23 +- drivers/misc/mic/Makefile | 2 + drivers/misc/mic/bus/Makefile | 1 + drivers/misc/mic/bus/cosm_bus.c | 141 ++ drivers/misc/mic/bus/cosm_bus.h | 134 ++ drivers/misc/mic/bus/mic_bus.c | 22 +- drivers/misc/mic/bus/scif_bus.c | 7 +- drivers/misc/mic/bus/scif_bus.h | 6 +- drivers/misc/mic/card/mic_device.c | 88 +- drivers/misc/mic/card/mic_x100.c | 2 +- drivers/misc/mic/common/mic_dev.h | 13 + drivers/misc/mic/cosm/Makefile | 10 + drivers/misc/mic/cosm/cosm_debugfs.c | 155 ++ drivers/misc/mic/cosm/cosm_main.c | 388 +++++ drivers/misc/mic/cosm/cosm_main.h | 70 + drivers/misc/mic/cosm/cosm_scif_server.c | 405 +++++ drivers/misc/mic/cosm/cosm_sysfs.c | 461 ++++++ drivers/misc/mic/cosm_client/Makefile | 7 + drivers/misc/mic/cosm_client/cosm_scif_client.c | 275 ++++ drivers/misc/mic/host/Makefile | 1 - drivers/misc/mic/host/mic_boot.c | 317 +--- drivers/misc/mic/host/mic_debugfs.c | 114 +- drivers/misc/mic/host/mic_device.h | 88 +- drivers/misc/mic/host/mic_fops.c | 4 +- drivers/misc/mic/host/mic_intr.c | 46 +- drivers/misc/mic/host/mic_main.c | 223 +-- drivers/misc/mic/host/mic_smpt.c | 30 +- drivers/misc/mic/host/mic_sysfs.c | 459 ------ drivers/misc/mic/host/mic_virtio.c | 17 +- drivers/misc/mic/host/mic_virtio.h | 2 +- drivers/misc/mic/host/mic_x100.c | 46 +- drivers/misc/mic/scif/Makefile | 5 + drivers/misc/mic/scif/scif_api.c | 234 ++- drivers/misc/mic/scif/scif_debugfs.c | 85 +- drivers/misc/mic/scif/scif_dma.c | 1979 +++++++++++++++++++++++ drivers/misc/mic/scif/scif_epd.c | 26 +- drivers/misc/mic/scif/scif_epd.h | 50 + drivers/misc/mic/scif/scif_fd.c | 178 +- drivers/misc/mic/scif/scif_fence.c | 771 +++++++++ drivers/misc/mic/scif/scif_main.c | 111 +- drivers/misc/mic/scif/scif_main.h | 37 +- drivers/misc/mic/scif/scif_map.h | 25 +- drivers/misc/mic/scif/scif_mmap.c | 699 ++++++++ drivers/misc/mic/scif/scif_nm.c | 20 +- drivers/misc/mic/scif/scif_nodeqp.c | 130 +- drivers/misc/mic/scif/scif_nodeqp.h | 42 +- drivers/misc/mic/scif/scif_peer_bus.c | 179 +- drivers/misc/mic/scif/scif_peer_bus.h | 42 +- drivers/misc/mic/scif/scif_rma.c | 1770 ++++++++++++++++++++ drivers/misc/mic/scif/scif_rma.h | 464 ++++++ drivers/misc/mic/scif/scif_rma_list.c | 291 ++++ drivers/misc/mic/scif/scif_rma_list.h | 57 + include/linux/dmaengine.h | 4 + include/linux/iova.h | 4 +- include/linux/mic_bus.h | 3 +- include/linux/scif.h | 366 ++++- include/uapi/linux/mic_common.h | 16 +- include/uapi/linux/scif_ioctl.h | 85 + 67 files changed, 10065 insertions(+), 1740 deletions(-) create mode 100644 drivers/misc/mic/bus/cosm_bus.c create mode 100644 drivers/misc/mic/bus/cosm_bus.h create mode 100644 drivers/misc/mic/cosm/Makefile create mode 100644 drivers/misc/mic/cosm/cosm_debugfs.c create mode 100644 drivers/misc/mic/cosm/cosm_main.c create mode 100644 drivers/misc/mic/cosm/cosm_main.h create mode 100644 drivers/misc/mic/cosm/cosm_scif_server.c create mode 100644 drivers/misc/mic/cosm/cosm_sysfs.c create mode 100644 drivers/misc/mic/cosm_client/Makefile create mode 100644 drivers/misc/mic/cosm_client/cosm_scif_client.c delete mode 100644 drivers/misc/mic/host/mic_sysfs.c create mode 100644 drivers/misc/mic/scif/scif_dma.c create mode 100644 drivers/misc/mic/scif/scif_fence.c create mode 100644 drivers/misc/mic/scif/scif_mmap.c create mode 100644 drivers/misc/mic/scif/scif_rma.c create mode 100644 drivers/misc/mic/scif/scif_rma.h create mode 100644 drivers/misc/mic/scif/scif_rma_list.c create mode 100644 drivers/misc/mic/scif/scif_rma_list.h -- 2.0.0.rc3.2.g998f840 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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