From: "Alastair D'Silva" <alastair@d-silva.org> To: alastair@d-silva.org Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>, "Benjamin Herrenschmidt" <benh@kernel.crashing.org>, "Paul Mackerras" <paulus@samba.org>, "Michael Ellerman" <mpe@ellerman.id.au>, "Frederic Barrat" <fbarrat@linux.ibm.com>, "Andrew Donnellan" <ajd@linux.ibm.com>, "Arnd Bergmann" <arnd@arndb.de>, "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>, "Andrew Morton" <akpm@linux-foundation.org>, "Mauro Carvalho Chehab" <mchehab+samsung@kernel.org>, "David S. Miller" <davem@davemloft.net>, "Rob Herring" <robh@kernel.org>, "Anton Blanchard" <anton@ozlabs.org>, "Krzysztof Kozlowski" <krzk@kernel.org>, "Mahesh Salgaonkar" <mahesh@linux.vnet.ibm.com>, "Madhavan Srinivasan" <maddy@linux.vnet.ibm.com>, "Cédric Le Goater" <clg@kaod.org>, "Anju T Sudhakar" <anju@linux.vnet.ibm.com>, "Hari Bathini" <hbathini@linux.ibm.com>, "Thomas Gleixner" <tglx@linutronix.de>, "Greg Kurz" <groug@kaod.org>, "Nicholas Piggin" <npiggin@gmail.com>, "Masahiro Yamada" <yamada.masahiro@socionext.com>, "Alexey Kardashevskiy" <aik@ozlabs.r> Subject: [PATCH v4 00/25] Add support for OpenCAPI Persistent Memory devices Date: Fri, 27 Mar 2020 18:11:37 +1100 [thread overview] Message-ID: <20200327071202.2159885-1-alastair@d-silva.org> (raw) This series adds support for OpenCAPI Persistent Memory devices on bare metal (arch/powernv), exposing them as nvdimms so that we can make use of the existing infrastructure. There already exists a driver for the same devices abstracted through PowerVM (arch/pseries): arch/powerpc/platforms/pseries/papr_scm.c These devices are connected via OpenCAPI, and present as LPC (lowest coherence point) memory to the system, practically, that means that memory on these cards could be treated as conventional, cache-coherent memory. Since the devices are connected via OpenCAPI, they are not enumerated via ACPI. Instead, OpenCAPI links present as pseudo-PCI bridges, with devices below them. This series introduces a driver that exposes the memory on these cards as nvdimms, with each card getting it's own bus. This is somewhat complicated by the fact that the cards do not have out of band persistent storage for metadata, so 1 SECTION_SIZE's (see SPARSEMEM) worth of storage is carved out of the top of the card storage to implement the ndctl_config_* calls. The driver is not responsible for configuring the NPU (NVLink Processing Unit) BARs to map the LPC memory from the card into the system's physical address space, instead, it requests this to be done via OPAL calls (typically implemented by Skiboot). The series is structured as follows: - Required infrastructure changes & cleanup - A minimal driver implementation - Implementing additional features within the driver Changelog: V4: - Rebase on next-20200320 - Bump copyright to 2020 - Ensure all uapi headers use C89 compatible comments (missed ocxlpmem.h) - Move the driver back to drivers/nvdimm/ocxl, after confirmation that this location is desirable - Rename ocxl.c to ocxlpmem.c (+ support files) - Rename all ocxl_pmem to ocxlpmem - Address checkpatch --strict issues - "powerpc/powernv: Add OPAL calls for LPC memory alloc/release" - Pass base address as __be64 - "ocxl: Tally up the LPC memory on a link & allow it to be mapped" - Address checkpatch spacing warnings - Reword blurb - Reword size description for ocxl_link_add_lpc_mem() - Add an early exit in ocxl_link_lpc_release() to avoid triggering bogus warnings if called after ocxl_link_lpc_map() fails - "powerpc/powernv: Add OPAL calls for LPC memory alloc/release" - Reword blurb - "powerpc/powernv: Map & release OpenCAPI LPC memory" - Reword blurb - Move minor_idr init from file_init() to ocxlpmem_init() (fixes runtime error in "nvdimm: Add driver for OpenCAPI Persistent Memory") - Wrap long lines - "nvdimm: Add driver for OpenCAPI Storage Class Memory" - Remove '+ 1' workround from serial number->cookie assignment - Drop out of memory message for ocxlpmem in probe() - Fix leaks of ocxlpmem & ocxlpmem->ocxl_fn in probe() - remove struct ocxlpmem_function0, it didn't value add - factor out err_unregistered label in probe - Address more checkpatch warnings - get/put the pci dev on probe/free - Drop ocxlpmem_ prefix from static functions - Propogate errors up from called functions in probe() - Set MODULE_LICENSE to GPLv2 - Add myself as module author - Call nvdimm_bus_unregister() in remove() to release references - Don't call devm_memunmap on metadata_address, the release handler on the device already deals with this - "nvdimm/ocxl: Read the capability registers & wait for device ready" - Fix mask for read_latency - Fold in is_usable logic into timeout to remove error message race - propogate bad rc from read_device_metadata - "nvdimm/ocxl: Add register addresses & status values to the header" - Add comments for register abbreviations where names have been expanded - Add missing status for blocked on background task - Alias defines for firmware update status to show that the duplication of values is intentional - "nvdimm/ocxl: Register a character device for userspace to interact with" - Add lock around minors IDR, delete the cdev before device_unregister - Propogate errors up from called functions in probe() - "nvdimm/ocxl: Add support for Admin commands" - Fix typo in setup_command_data error message, and drop 'ocxl' from it - Drop vestigial CHI read from admin_command_request - Change command ID mismatch message to dev_err, and return an error - Use jiffies to implement admin_command_complete_timeout() - Flesh out blurb - Create a wrapper to issue the command & wait for timeout - "nvdimm/ocxl: Add support for near storage commands" - dropped (will submit with the patches for nvdimm overwrite) - "nvdimm/ocxl: Implement the Read Error Log command" - Remove stray blank line - change misplaced goto to an early exit in read_error_log - Inline error_log_offset_0x08 - Read WWID data as LE rather than host endian - Move the include of nvdimm/ocxlpmem.h to ocxl.c - Add padding after fwrevision in struct ioctl_ocxl_pmem_error_log - Register IOCTL magic - Coerce pointers to __u64 in IOCTLs - "nvdimm/ocxl: Add controller dump IOCTLs" - Coerce pointers to __u64 in IOCTLs - Document expected IOCTL usage in blurb - Add missing rc check - Only populate up to the number of bytes returned by the card, and return this length to the caller - Add missing header check - "nvdimm/ocxl: Add an IOCTL to report controller statistics" - Update to match the latest version of the spec - Verify that parametr block IDs & lengths match what we expect - Use defines for offsets - "nvdimm/ocxl: Forward events to userspace" - Don't enable NSCRA doorbell - return -EBUSY if the event context is already used - return -ENODEV if IRQs cannot be mapped - Tag IRQ pointers with __iomem - Drop ocxlpmem_ prefix from static functions - Propogate error from eventfd_ctx_fdget - Fix error check in copy_to_user - Drop GLOBAL_MMIO_CHI_NSCRA (this should be in the overwrite patch) - Drop unused irq_pgmap - Don't redef BIT_ULL - "nvdimm/ocxl: Add debug IOCTLs" - Eliminate clearing loop (now done in admin_command_execute() - Drop dummy IOCTLs if CONFIG_OCXL_PMEM_DEBUG is not set - Group debug IOCTLs together & comment that they may not be available - "nvdimm/ocxl: Expose SMART data via ndctl" - Drop 'rc = 0; goto out;' - Propogate errors from ndctl_smart() - "nvdimm/ocxl: Expose the serial number in sysfs" & "nvdimm/ocxl: Expose the firmware version in sysfs" - Squash these 2 patches together - Expose data as a DIMM attribute rather than an ocxlpmem attribute - "nvdimm/ocxl: Add an IOCTL to request controller health & perf data" - Reword blurb - "nvdimm/ocxl: Implement the heartbeat command" - Propogate rc in probe() V3: - Rebase against next/next-20200220 - Move driver to arch/powerpc/platforms/powernv, we now expect this driver to go upstream via the powerpc tree - "nvdimm/ocxl: Implement the Read Error Log command" - Fix bad header path - "nvdimm/ocxl: Read the capability registers & wait for device ready" - Fix overlapping masks between readiness_timeout & memory_available_timeout - "nvdimm: Add driver for OpenCAPI Storage Class Memory" - Address minor review comments from Jonathan Cameron - Remove attributes - Default to module if building LIBNVDIMM - Propogate errors up from called functions in probe() - "nvdimm/ocxl: Expose SMART data via ndctl" - Pack attributes in struct - Support different size SMART buffers for compatibility with newer ndctls that may want more SMART attribs than we provide - Rework to to use ND_CMD_CALL instead of ND_CMD_SMART - drop "ocxl: Free detached contexts in ocxl_context_detach_all()" - "powerpc: Map & release OpenCAPI LPC memory" - Remove 'extern' - Only available with CONFIG_MEMORY_HOTPLUG_SPARSE - "ocxl: Tally up the LPC memory on a link & allow it to be mapped" - Address minor review comments from Jonathan Cameron - "ocxl: Add functions to map/unmap LPC memory" - Split detected memory message into a separate patch - Address minor review comments from Jonathan Cameron - Add a comment explaining why unmap_lpc_mem is in deconfigure_afu - "nvdimm/ocxl: Add support for Admin commands" - use sizeof(u64) rather than 0x08 when iterating u64s - "nvdimm/ocxl: Implement the heartbeat command" - Fix typo in blurb - Address kernel doc issues - Ensure all uapi headers use C89 compatible comments - Drop patches for firmware update & overwrite, these will be submitted later once patches are available for ndctl - Rename SCM to OpenCAPI Persistent Memory V2: - "powerpc: Map & release OpenCAPI LPC memory" - Fix #if -> #ifdef - use pci_dev_id to get the bdfn - use __be64 to hold be data - indent check_hotplug_memory_addressable correctly - Remove export of check_hotplug_memory_addressable - "ocxl: Conditionally bind SCM devices to the generic OCXL driver" - Improve patch description and remove redundant default - "nvdimm: Add driver for OpenCAPI Storage Class Memory" - Mark a few funcs as static as identified by the 0day bot - Add OCXL dependancies to OCXL_SCM - Use memcpy_mcsafe in scm_ndctl_config_read - Rename scm_foo_offset_0x00 to scm_foo_header_parse & add docs - Name DIMM attribs "ocxl" rather than "scm" - Split out into base + many feature patches - "powerpc: Enable OpenCAPI Storage Class Memory driver on bare metal" - Build DEV_DAX & friends as modules - "ocxl: Conditionally bind SCM devices to the generic OCXL driver" - Patch dropped (easy enough to maintain this out of tree for development) - "ocxl: Tally up the LPC memory on a link & allow it to be mapped" - Add a warning if an unmatched lpc_release is called - "ocxl: Add functions to map/unmap LPC memory" - Use EXPORT_SYMBOL_GPL Alastair D'Silva (25): powerpc/powernv: Add OPAL calls for LPC memory alloc/release mm/memory_hotplug: Allow check_hotplug_memory_addressable to be called from drivers powerpc/powernv: Map & release OpenCAPI LPC memory ocxl: Remove unnecessary externs ocxl: Address kernel doc errors & warnings ocxl: Tally up the LPC memory on a link & allow it to be mapped ocxl: Add functions to map/unmap LPC memory ocxl: Emit a log message showing how much LPC memory was detected ocxl: Save the device serial number in ocxl_fn nvdimm: Add driver for OpenCAPI Persistent Memory powerpc: Enable the OpenCAPI Persistent Memory driver for powernv_defconfig nvdimm/ocxl: Add register addresses & status values to the header nvdimm/ocxl: Read the capability registers & wait for device ready nvdimm/ocxl: Add support for Admin commands nvdimm/ocxl: Register a character device for userspace to interact with nvdimm/ocxl: Implement the Read Error Log command nvdimm/ocxl: Add controller dump IOCTLs nvdimm/ocxl: Add an IOCTL to report controller statistics nvdimm/ocxl: Forward events to userspace nvdimm/ocxl: Add an IOCTL to request controller health & perf data nvdimm/ocxl: Implement the heartbeat command nvdimm/ocxl: Add debug IOCTLs nvdimm/ocxl: Expose SMART data via ndctl nvdimm/ocxl: Expose the serial number & firmware version in sysfs MAINTAINERS: Add myself & nvdimm/ocxl to ocxl .../userspace-api/ioctl/ioctl-number.rst | 1 + MAINTAINERS | 3 + arch/powerpc/configs/powernv_defconfig | 5 + arch/powerpc/include/asm/opal-api.h | 2 + arch/powerpc/include/asm/opal.h | 2 + arch/powerpc/include/asm/pnv-ocxl.h | 42 +- arch/powerpc/platforms/powernv/ocxl.c | 43 + arch/powerpc/platforms/powernv/opal-call.c | 2 + drivers/misc/ocxl/config.c | 74 +- drivers/misc/ocxl/core.c | 61 + drivers/misc/ocxl/link.c | 60 + drivers/misc/ocxl/ocxl_internal.h | 45 +- drivers/nvdimm/Kconfig | 2 + drivers/nvdimm/Makefile | 1 + drivers/nvdimm/ocxl/Kconfig | 21 + drivers/nvdimm/ocxl/Makefile | 7 + drivers/nvdimm/ocxl/main.c | 1975 +++++++++++++++++ drivers/nvdimm/ocxl/ocxlpmem.h | 197 ++ drivers/nvdimm/ocxl/ocxlpmem_internal.c | 280 +++ include/linux/memory_hotplug.h | 5 + include/misc/ocxl.h | 122 +- include/uapi/linux/ndctl.h | 1 + include/uapi/nvdimm/ocxlpmem.h | 127 ++ mm/memory_hotplug.c | 4 +- 24 files changed, 2983 insertions(+), 99 deletions(-) create mode 100644 drivers/nvdimm/ocxl/Kconfig create mode 100644 drivers/nvdimm/ocxl/Makefile create mode 100644 drivers/nvdimm/ocxl/main.c create mode 100644 drivers/nvdimm/ocxl/ocxlpmem.h create mode 100644 drivers/nvdimm/ocxl/ocxlpmem_internal.c create mode 100644 include/uapi/nvdimm/ocxlpmem.h -- 2.24.1 _______________________________________________ Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org To unsubscribe send an email to linux-nvdimm-leave@lists.01.org
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From: "Alastair D'Silva" <alastair@d-silva.org> To: alastair@d-silva.org Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>, "Oliver O'Halloran" <oohall@gmail.com>, "Benjamin Herrenschmidt" <benh@kernel.crashing.org>, "Paul Mackerras" <paulus@samba.org>, "Michael Ellerman" <mpe@ellerman.id.au>, "Frederic Barrat" <fbarrat@linux.ibm.com>, "Andrew Donnellan" <ajd@linux.ibm.com>, "Arnd Bergmann" <arnd@arndb.de>, "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>, "Dan Williams" <dan.j.williams@intel.com>, "Vishal Verma" <vishal.l.verma@intel.com>, "Dave Jiang" <dave.jiang@intel.com>, "Ira Weiny" <ira.weiny@intel.com>, "Andrew Morton" <akpm@linux-foundation.org>, "Mauro Carvalho Chehab" <mchehab+samsung@kernel.org>, "David S. Miller" <davem@davemloft.net>, "Rob Herring" <robh@kernel.org>, "Anton Blanchard" <anton@ozlabs.org>, "Krzysztof Kozlowski" <krzk@kernel.org>, "Mahesh Salgaonkar" <mahesh@linux.vnet.ibm.com>, "Madhavan Srinivasan" <maddy@linux.vnet.ibm.com>, "Cédric Le Goater" <clg@kaod.org>, "Anju T Sudhakar" <anju@linux.vnet.ibm.com>, "Hari Bathini" <hbathini@linux.ibm.com>, "Thomas Gleixner" <tglx@linutronix.de>, "Greg Kurz" <groug@kaod.org>, "Nicholas Piggin" <npiggin@gmail.com>, "Masahiro Yamada" <yamada.masahiro@socionext.com>, "Alexey Kardashevskiy" <aik@ozlabs.ru>, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-nvdimm@lists.01.org, linux-mm@kvack.org Subject: [PATCH v4 00/25] Add support for OpenCAPI Persistent Memory devices Date: Fri, 27 Mar 2020 18:11:37 +1100 [thread overview] Message-ID: <20200327071202.2159885-1-alastair@d-silva.org> (raw) This series adds support for OpenCAPI Persistent Memory devices on bare metal (arch/powernv), exposing them as nvdimms so that we can make use of the existing infrastructure. There already exists a driver for the same devices abstracted through PowerVM (arch/pseries): arch/powerpc/platforms/pseries/papr_scm.c These devices are connected via OpenCAPI, and present as LPC (lowest coherence point) memory to the system, practically, that means that memory on these cards could be treated as conventional, cache-coherent memory. Since the devices are connected via OpenCAPI, they are not enumerated via ACPI. Instead, OpenCAPI links present as pseudo-PCI bridges, with devices below them. This series introduces a driver that exposes the memory on these cards as nvdimms, with each card getting it's own bus. This is somewhat complicated by the fact that the cards do not have out of band persistent storage for metadata, so 1 SECTION_SIZE's (see SPARSEMEM) worth of storage is carved out of the top of the card storage to implement the ndctl_config_* calls. The driver is not responsible for configuring the NPU (NVLink Processing Unit) BARs to map the LPC memory from the card into the system's physical address space, instead, it requests this to be done via OPAL calls (typically implemented by Skiboot). The series is structured as follows: - Required infrastructure changes & cleanup - A minimal driver implementation - Implementing additional features within the driver Changelog: V4: - Rebase on next-20200320 - Bump copyright to 2020 - Ensure all uapi headers use C89 compatible comments (missed ocxlpmem.h) - Move the driver back to drivers/nvdimm/ocxl, after confirmation that this location is desirable - Rename ocxl.c to ocxlpmem.c (+ support files) - Rename all ocxl_pmem to ocxlpmem - Address checkpatch --strict issues - "powerpc/powernv: Add OPAL calls for LPC memory alloc/release" - Pass base address as __be64 - "ocxl: Tally up the LPC memory on a link & allow it to be mapped" - Address checkpatch spacing warnings - Reword blurb - Reword size description for ocxl_link_add_lpc_mem() - Add an early exit in ocxl_link_lpc_release() to avoid triggering bogus warnings if called after ocxl_link_lpc_map() fails - "powerpc/powernv: Add OPAL calls for LPC memory alloc/release" - Reword blurb - "powerpc/powernv: Map & release OpenCAPI LPC memory" - Reword blurb - Move minor_idr init from file_init() to ocxlpmem_init() (fixes runtime error in "nvdimm: Add driver for OpenCAPI Persistent Memory") - Wrap long lines - "nvdimm: Add driver for OpenCAPI Storage Class Memory" - Remove '+ 1' workround from serial number->cookie assignment - Drop out of memory message for ocxlpmem in probe() - Fix leaks of ocxlpmem & ocxlpmem->ocxl_fn in probe() - remove struct ocxlpmem_function0, it didn't value add - factor out err_unregistered label in probe - Address more checkpatch warnings - get/put the pci dev on probe/free - Drop ocxlpmem_ prefix from static functions - Propogate errors up from called functions in probe() - Set MODULE_LICENSE to GPLv2 - Add myself as module author - Call nvdimm_bus_unregister() in remove() to release references - Don't call devm_memunmap on metadata_address, the release handler on the device already deals with this - "nvdimm/ocxl: Read the capability registers & wait for device ready" - Fix mask for read_latency - Fold in is_usable logic into timeout to remove error message race - propogate bad rc from read_device_metadata - "nvdimm/ocxl: Add register addresses & status values to the header" - Add comments for register abbreviations where names have been expanded - Add missing status for blocked on background task - Alias defines for firmware update status to show that the duplication of values is intentional - "nvdimm/ocxl: Register a character device for userspace to interact with" - Add lock around minors IDR, delete the cdev before device_unregister - Propogate errors up from called functions in probe() - "nvdimm/ocxl: Add support for Admin commands" - Fix typo in setup_command_data error message, and drop 'ocxl' from it - Drop vestigial CHI read from admin_command_request - Change command ID mismatch message to dev_err, and return an error - Use jiffies to implement admin_command_complete_timeout() - Flesh out blurb - Create a wrapper to issue the command & wait for timeout - "nvdimm/ocxl: Add support for near storage commands" - dropped (will submit with the patches for nvdimm overwrite) - "nvdimm/ocxl: Implement the Read Error Log command" - Remove stray blank line - change misplaced goto to an early exit in read_error_log - Inline error_log_offset_0x08 - Read WWID data as LE rather than host endian - Move the include of nvdimm/ocxlpmem.h to ocxl.c - Add padding after fwrevision in struct ioctl_ocxl_pmem_error_log - Register IOCTL magic - Coerce pointers to __u64 in IOCTLs - "nvdimm/ocxl: Add controller dump IOCTLs" - Coerce pointers to __u64 in IOCTLs - Document expected IOCTL usage in blurb - Add missing rc check - Only populate up to the number of bytes returned by the card, and return this length to the caller - Add missing header check - "nvdimm/ocxl: Add an IOCTL to report controller statistics" - Update to match the latest version of the spec - Verify that parametr block IDs & lengths match what we expect - Use defines for offsets - "nvdimm/ocxl: Forward events to userspace" - Don't enable NSCRA doorbell - return -EBUSY if the event context is already used - return -ENODEV if IRQs cannot be mapped - Tag IRQ pointers with __iomem - Drop ocxlpmem_ prefix from static functions - Propogate error from eventfd_ctx_fdget - Fix error check in copy_to_user - Drop GLOBAL_MMIO_CHI_NSCRA (this should be in the overwrite patch) - Drop unused irq_pgmap - Don't redef BIT_ULL - "nvdimm/ocxl: Add debug IOCTLs" - Eliminate clearing loop (now done in admin_command_execute() - Drop dummy IOCTLs if CONFIG_OCXL_PMEM_DEBUG is not set - Group debug IOCTLs together & comment that they may not be available - "nvdimm/ocxl: Expose SMART data via ndctl" - Drop 'rc = 0; goto out;' - Propogate errors from ndctl_smart() - "nvdimm/ocxl: Expose the serial number in sysfs" & "nvdimm/ocxl: Expose the firmware version in sysfs" - Squash these 2 patches together - Expose data as a DIMM attribute rather than an ocxlpmem attribute - "nvdimm/ocxl: Add an IOCTL to request controller health & perf data" - Reword blurb - "nvdimm/ocxl: Implement the heartbeat command" - Propogate rc in probe() V3: - Rebase against next/next-20200220 - Move driver to arch/powerpc/platforms/powernv, we now expect this driver to go upstream via the powerpc tree - "nvdimm/ocxl: Implement the Read Error Log command" - Fix bad header path - "nvdimm/ocxl: Read the capability registers & wait for device ready" - Fix overlapping masks between readiness_timeout & memory_available_timeout - "nvdimm: Add driver for OpenCAPI Storage Class Memory" - Address minor review comments from Jonathan Cameron - Remove attributes - Default to module if building LIBNVDIMM - Propogate errors up from called functions in probe() - "nvdimm/ocxl: Expose SMART data via ndctl" - Pack attributes in struct - Support different size SMART buffers for compatibility with newer ndctls that may want more SMART attribs than we provide - Rework to to use ND_CMD_CALL instead of ND_CMD_SMART - drop "ocxl: Free detached contexts in ocxl_context_detach_all()" - "powerpc: Map & release OpenCAPI LPC memory" - Remove 'extern' - Only available with CONFIG_MEMORY_HOTPLUG_SPARSE - "ocxl: Tally up the LPC memory on a link & allow it to be mapped" - Address minor review comments from Jonathan Cameron - "ocxl: Add functions to map/unmap LPC memory" - Split detected memory message into a separate patch - Address minor review comments from Jonathan Cameron - Add a comment explaining why unmap_lpc_mem is in deconfigure_afu - "nvdimm/ocxl: Add support for Admin commands" - use sizeof(u64) rather than 0x08 when iterating u64s - "nvdimm/ocxl: Implement the heartbeat command" - Fix typo in blurb - Address kernel doc issues - Ensure all uapi headers use C89 compatible comments - Drop patches for firmware update & overwrite, these will be submitted later once patches are available for ndctl - Rename SCM to OpenCAPI Persistent Memory V2: - "powerpc: Map & release OpenCAPI LPC memory" - Fix #if -> #ifdef - use pci_dev_id to get the bdfn - use __be64 to hold be data - indent check_hotplug_memory_addressable correctly - Remove export of check_hotplug_memory_addressable - "ocxl: Conditionally bind SCM devices to the generic OCXL driver" - Improve patch description and remove redundant default - "nvdimm: Add driver for OpenCAPI Storage Class Memory" - Mark a few funcs as static as identified by the 0day bot - Add OCXL dependancies to OCXL_SCM - Use memcpy_mcsafe in scm_ndctl_config_read - Rename scm_foo_offset_0x00 to scm_foo_header_parse & add docs - Name DIMM attribs "ocxl" rather than "scm" - Split out into base + many feature patches - "powerpc: Enable OpenCAPI Storage Class Memory driver on bare metal" - Build DEV_DAX & friends as modules - "ocxl: Conditionally bind SCM devices to the generic OCXL driver" - Patch dropped (easy enough to maintain this out of tree for development) - "ocxl: Tally up the LPC memory on a link & allow it to be mapped" - Add a warning if an unmatched lpc_release is called - "ocxl: Add functions to map/unmap LPC memory" - Use EXPORT_SYMBOL_GPL Alastair D'Silva (25): powerpc/powernv: Add OPAL calls for LPC memory alloc/release mm/memory_hotplug: Allow check_hotplug_memory_addressable to be called from drivers powerpc/powernv: Map & release OpenCAPI LPC memory ocxl: Remove unnecessary externs ocxl: Address kernel doc errors & warnings ocxl: Tally up the LPC memory on a link & allow it to be mapped ocxl: Add functions to map/unmap LPC memory ocxl: Emit a log message showing how much LPC memory was detected ocxl: Save the device serial number in ocxl_fn nvdimm: Add driver for OpenCAPI Persistent Memory powerpc: Enable the OpenCAPI Persistent Memory driver for powernv_defconfig nvdimm/ocxl: Add register addresses & status values to the header nvdimm/ocxl: Read the capability registers & wait for device ready nvdimm/ocxl: Add support for Admin commands nvdimm/ocxl: Register a character device for userspace to interact with nvdimm/ocxl: Implement the Read Error Log command nvdimm/ocxl: Add controller dump IOCTLs nvdimm/ocxl: Add an IOCTL to report controller statistics nvdimm/ocxl: Forward events to userspace nvdimm/ocxl: Add an IOCTL to request controller health & perf data nvdimm/ocxl: Implement the heartbeat command nvdimm/ocxl: Add debug IOCTLs nvdimm/ocxl: Expose SMART data via ndctl nvdimm/ocxl: Expose the serial number & firmware version in sysfs MAINTAINERS: Add myself & nvdimm/ocxl to ocxl .../userspace-api/ioctl/ioctl-number.rst | 1 + MAINTAINERS | 3 + arch/powerpc/configs/powernv_defconfig | 5 + arch/powerpc/include/asm/opal-api.h | 2 + arch/powerpc/include/asm/opal.h | 2 + arch/powerpc/include/asm/pnv-ocxl.h | 42 +- arch/powerpc/platforms/powernv/ocxl.c | 43 + arch/powerpc/platforms/powernv/opal-call.c | 2 + drivers/misc/ocxl/config.c | 74 +- drivers/misc/ocxl/core.c | 61 + drivers/misc/ocxl/link.c | 60 + drivers/misc/ocxl/ocxl_internal.h | 45 +- drivers/nvdimm/Kconfig | 2 + drivers/nvdimm/Makefile | 1 + drivers/nvdimm/ocxl/Kconfig | 21 + drivers/nvdimm/ocxl/Makefile | 7 + drivers/nvdimm/ocxl/main.c | 1975 +++++++++++++++++ drivers/nvdimm/ocxl/ocxlpmem.h | 197 ++ drivers/nvdimm/ocxl/ocxlpmem_internal.c | 280 +++ include/linux/memory_hotplug.h | 5 + include/misc/ocxl.h | 122 +- include/uapi/linux/ndctl.h | 1 + include/uapi/nvdimm/ocxlpmem.h | 127 ++ mm/memory_hotplug.c | 4 +- 24 files changed, 2983 insertions(+), 99 deletions(-) create mode 100644 drivers/nvdimm/ocxl/Kconfig create mode 100644 drivers/nvdimm/ocxl/Makefile create mode 100644 drivers/nvdimm/ocxl/main.c create mode 100644 drivers/nvdimm/ocxl/ocxlpmem.h create mode 100644 drivers/nvdimm/ocxl/ocxlpmem_internal.c create mode 100644 include/uapi/nvdimm/ocxlpmem.h -- 2.24.1
WARNING: multiple messages have this Message-ID
From: "Alastair D'Silva" <alastair@d-silva.org> To: alastair@d-silva.org Cc: "Madhavan Srinivasan" <maddy@linux.vnet.ibm.com>, "Alexey Kardashevskiy" <aik@ozlabs.ru>, "Masahiro Yamada" <yamada.masahiro@socionext.com>, "Oliver O'Halloran" <oohall@gmail.com>, "Mauro Carvalho Chehab" <mchehab+samsung@kernel.org>, "Ira Weiny" <ira.weiny@intel.com>, "Thomas Gleixner" <tglx@linutronix.de>, "Rob Herring" <robh@kernel.org>, "Dave Jiang" <dave.jiang@intel.com>, linux-nvdimm@lists.01.org, "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>, "Krzysztof Kozlowski" <krzk@kernel.org>, "Anju T Sudhakar" <anju@linux.vnet.ibm.com>, "Mahesh Salgaonkar" <mahesh@linux.vnet.ibm.com>, "Andrew Donnellan" <ajd@linux.ibm.com>, "Arnd Bergmann" <arnd@arndb.de>, "Greg Kurz" <groug@kaod.org>, "Nicholas Piggin" <npiggin@gmail.com>, "Cédric Le Goater" <clg@kaod.org>, "Dan Williams" <dan.j.williams@intel.com>, "Hari Bathini" <hbathini@linux.ibm.com>, linux-mm@kvack.org, "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>, linux-kernel@vger.kernel.org, "Vishal Verma" <vishal.l.verma@intel.com>, "Frederic Barrat" <fbarrat@linux.ibm.com>, "Paul Mackerras" <paulus@samba.org>, "Andrew Morton" <akpm@linux-foundation.org>, linuxppc-dev@lists.ozlabs.org, "David S. Miller" <davem@davemloft.net> Subject: [PATCH v4 00/25] Add support for OpenCAPI Persistent Memory devices Date: Fri, 27 Mar 2020 18:11:37 +1100 [thread overview] Message-ID: <20200327071202.2159885-1-alastair@d-silva.org> (raw) This series adds support for OpenCAPI Persistent Memory devices on bare metal (arch/powernv), exposing them as nvdimms so that we can make use of the existing infrastructure. There already exists a driver for the same devices abstracted through PowerVM (arch/pseries): arch/powerpc/platforms/pseries/papr_scm.c These devices are connected via OpenCAPI, and present as LPC (lowest coherence point) memory to the system, practically, that means that memory on these cards could be treated as conventional, cache-coherent memory. Since the devices are connected via OpenCAPI, they are not enumerated via ACPI. Instead, OpenCAPI links present as pseudo-PCI bridges, with devices below them. This series introduces a driver that exposes the memory on these cards as nvdimms, with each card getting it's own bus. This is somewhat complicated by the fact that the cards do not have out of band persistent storage for metadata, so 1 SECTION_SIZE's (see SPARSEMEM) worth of storage is carved out of the top of the card storage to implement the ndctl_config_* calls. The driver is not responsible for configuring the NPU (NVLink Processing Unit) BARs to map the LPC memory from the card into the system's physical address space, instead, it requests this to be done via OPAL calls (typically implemented by Skiboot). The series is structured as follows: - Required infrastructure changes & cleanup - A minimal driver implementation - Implementing additional features within the driver Changelog: V4: - Rebase on next-20200320 - Bump copyright to 2020 - Ensure all uapi headers use C89 compatible comments (missed ocxlpmem.h) - Move the driver back to drivers/nvdimm/ocxl, after confirmation that this location is desirable - Rename ocxl.c to ocxlpmem.c (+ support files) - Rename all ocxl_pmem to ocxlpmem - Address checkpatch --strict issues - "powerpc/powernv: Add OPAL calls for LPC memory alloc/release" - Pass base address as __be64 - "ocxl: Tally up the LPC memory on a link & allow it to be mapped" - Address checkpatch spacing warnings - Reword blurb - Reword size description for ocxl_link_add_lpc_mem() - Add an early exit in ocxl_link_lpc_release() to avoid triggering bogus warnings if called after ocxl_link_lpc_map() fails - "powerpc/powernv: Add OPAL calls for LPC memory alloc/release" - Reword blurb - "powerpc/powernv: Map & release OpenCAPI LPC memory" - Reword blurb - Move minor_idr init from file_init() to ocxlpmem_init() (fixes runtime error in "nvdimm: Add driver for OpenCAPI Persistent Memory") - Wrap long lines - "nvdimm: Add driver for OpenCAPI Storage Class Memory" - Remove '+ 1' workround from serial number->cookie assignment - Drop out of memory message for ocxlpmem in probe() - Fix leaks of ocxlpmem & ocxlpmem->ocxl_fn in probe() - remove struct ocxlpmem_function0, it didn't value add - factor out err_unregistered label in probe - Address more checkpatch warnings - get/put the pci dev on probe/free - Drop ocxlpmem_ prefix from static functions - Propogate errors up from called functions in probe() - Set MODULE_LICENSE to GPLv2 - Add myself as module author - Call nvdimm_bus_unregister() in remove() to release references - Don't call devm_memunmap on metadata_address, the release handler on the device already deals with this - "nvdimm/ocxl: Read the capability registers & wait for device ready" - Fix mask for read_latency - Fold in is_usable logic into timeout to remove error message race - propogate bad rc from read_device_metadata - "nvdimm/ocxl: Add register addresses & status values to the header" - Add comments for register abbreviations where names have been expanded - Add missing status for blocked on background task - Alias defines for firmware update status to show that the duplication of values is intentional - "nvdimm/ocxl: Register a character device for userspace to interact with" - Add lock around minors IDR, delete the cdev before device_unregister - Propogate errors up from called functions in probe() - "nvdimm/ocxl: Add support for Admin commands" - Fix typo in setup_command_data error message, and drop 'ocxl' from it - Drop vestigial CHI read from admin_command_request - Change command ID mismatch message to dev_err, and return an error - Use jiffies to implement admin_command_complete_timeout() - Flesh out blurb - Create a wrapper to issue the command & wait for timeout - "nvdimm/ocxl: Add support for near storage commands" - dropped (will submit with the patches for nvdimm overwrite) - "nvdimm/ocxl: Implement the Read Error Log command" - Remove stray blank line - change misplaced goto to an early exit in read_error_log - Inline error_log_offset_0x08 - Read WWID data as LE rather than host endian - Move the include of nvdimm/ocxlpmem.h to ocxl.c - Add padding after fwrevision in struct ioctl_ocxl_pmem_error_log - Register IOCTL magic - Coerce pointers to __u64 in IOCTLs - "nvdimm/ocxl: Add controller dump IOCTLs" - Coerce pointers to __u64 in IOCTLs - Document expected IOCTL usage in blurb - Add missing rc check - Only populate up to the number of bytes returned by the card, and return this length to the caller - Add missing header check - "nvdimm/ocxl: Add an IOCTL to report controller statistics" - Update to match the latest version of the spec - Verify that parametr block IDs & lengths match what we expect - Use defines for offsets - "nvdimm/ocxl: Forward events to userspace" - Don't enable NSCRA doorbell - return -EBUSY if the event context is already used - return -ENODEV if IRQs cannot be mapped - Tag IRQ pointers with __iomem - Drop ocxlpmem_ prefix from static functions - Propogate error from eventfd_ctx_fdget - Fix error check in copy_to_user - Drop GLOBAL_MMIO_CHI_NSCRA (this should be in the overwrite patch) - Drop unused irq_pgmap - Don't redef BIT_ULL - "nvdimm/ocxl: Add debug IOCTLs" - Eliminate clearing loop (now done in admin_command_execute() - Drop dummy IOCTLs if CONFIG_OCXL_PMEM_DEBUG is not set - Group debug IOCTLs together & comment that they may not be available - "nvdimm/ocxl: Expose SMART data via ndctl" - Drop 'rc = 0; goto out;' - Propogate errors from ndctl_smart() - "nvdimm/ocxl: Expose the serial number in sysfs" & "nvdimm/ocxl: Expose the firmware version in sysfs" - Squash these 2 patches together - Expose data as a DIMM attribute rather than an ocxlpmem attribute - "nvdimm/ocxl: Add an IOCTL to request controller health & perf data" - Reword blurb - "nvdimm/ocxl: Implement the heartbeat command" - Propogate rc in probe() V3: - Rebase against next/next-20200220 - Move driver to arch/powerpc/platforms/powernv, we now expect this driver to go upstream via the powerpc tree - "nvdimm/ocxl: Implement the Read Error Log command" - Fix bad header path - "nvdimm/ocxl: Read the capability registers & wait for device ready" - Fix overlapping masks between readiness_timeout & memory_available_timeout - "nvdimm: Add driver for OpenCAPI Storage Class Memory" - Address minor review comments from Jonathan Cameron - Remove attributes - Default to module if building LIBNVDIMM - Propogate errors up from called functions in probe() - "nvdimm/ocxl: Expose SMART data via ndctl" - Pack attributes in struct - Support different size SMART buffers for compatibility with newer ndctls that may want more SMART attribs than we provide - Rework to to use ND_CMD_CALL instead of ND_CMD_SMART - drop "ocxl: Free detached contexts in ocxl_context_detach_all()" - "powerpc: Map & release OpenCAPI LPC memory" - Remove 'extern' - Only available with CONFIG_MEMORY_HOTPLUG_SPARSE - "ocxl: Tally up the LPC memory on a link & allow it to be mapped" - Address minor review comments from Jonathan Cameron - "ocxl: Add functions to map/unmap LPC memory" - Split detected memory message into a separate patch - Address minor review comments from Jonathan Cameron - Add a comment explaining why unmap_lpc_mem is in deconfigure_afu - "nvdimm/ocxl: Add support for Admin commands" - use sizeof(u64) rather than 0x08 when iterating u64s - "nvdimm/ocxl: Implement the heartbeat command" - Fix typo in blurb - Address kernel doc issues - Ensure all uapi headers use C89 compatible comments - Drop patches for firmware update & overwrite, these will be submitted later once patches are available for ndctl - Rename SCM to OpenCAPI Persistent Memory V2: - "powerpc: Map & release OpenCAPI LPC memory" - Fix #if -> #ifdef - use pci_dev_id to get the bdfn - use __be64 to hold be data - indent check_hotplug_memory_addressable correctly - Remove export of check_hotplug_memory_addressable - "ocxl: Conditionally bind SCM devices to the generic OCXL driver" - Improve patch description and remove redundant default - "nvdimm: Add driver for OpenCAPI Storage Class Memory" - Mark a few funcs as static as identified by the 0day bot - Add OCXL dependancies to OCXL_SCM - Use memcpy_mcsafe in scm_ndctl_config_read - Rename scm_foo_offset_0x00 to scm_foo_header_parse & add docs - Name DIMM attribs "ocxl" rather than "scm" - Split out into base + many feature patches - "powerpc: Enable OpenCAPI Storage Class Memory driver on bare metal" - Build DEV_DAX & friends as modules - "ocxl: Conditionally bind SCM devices to the generic OCXL driver" - Patch dropped (easy enough to maintain this out of tree for development) - "ocxl: Tally up the LPC memory on a link & allow it to be mapped" - Add a warning if an unmatched lpc_release is called - "ocxl: Add functions to map/unmap LPC memory" - Use EXPORT_SYMBOL_GPL Alastair D'Silva (25): powerpc/powernv: Add OPAL calls for LPC memory alloc/release mm/memory_hotplug: Allow check_hotplug_memory_addressable to be called from drivers powerpc/powernv: Map & release OpenCAPI LPC memory ocxl: Remove unnecessary externs ocxl: Address kernel doc errors & warnings ocxl: Tally up the LPC memory on a link & allow it to be mapped ocxl: Add functions to map/unmap LPC memory ocxl: Emit a log message showing how much LPC memory was detected ocxl: Save the device serial number in ocxl_fn nvdimm: Add driver for OpenCAPI Persistent Memory powerpc: Enable the OpenCAPI Persistent Memory driver for powernv_defconfig nvdimm/ocxl: Add register addresses & status values to the header nvdimm/ocxl: Read the capability registers & wait for device ready nvdimm/ocxl: Add support for Admin commands nvdimm/ocxl: Register a character device for userspace to interact with nvdimm/ocxl: Implement the Read Error Log command nvdimm/ocxl: Add controller dump IOCTLs nvdimm/ocxl: Add an IOCTL to report controller statistics nvdimm/ocxl: Forward events to userspace nvdimm/ocxl: Add an IOCTL to request controller health & perf data nvdimm/ocxl: Implement the heartbeat command nvdimm/ocxl: Add debug IOCTLs nvdimm/ocxl: Expose SMART data via ndctl nvdimm/ocxl: Expose the serial number & firmware version in sysfs MAINTAINERS: Add myself & nvdimm/ocxl to ocxl .../userspace-api/ioctl/ioctl-number.rst | 1 + MAINTAINERS | 3 + arch/powerpc/configs/powernv_defconfig | 5 + arch/powerpc/include/asm/opal-api.h | 2 + arch/powerpc/include/asm/opal.h | 2 + arch/powerpc/include/asm/pnv-ocxl.h | 42 +- arch/powerpc/platforms/powernv/ocxl.c | 43 + arch/powerpc/platforms/powernv/opal-call.c | 2 + drivers/misc/ocxl/config.c | 74 +- drivers/misc/ocxl/core.c | 61 + drivers/misc/ocxl/link.c | 60 + drivers/misc/ocxl/ocxl_internal.h | 45 +- drivers/nvdimm/Kconfig | 2 + drivers/nvdimm/Makefile | 1 + drivers/nvdimm/ocxl/Kconfig | 21 + drivers/nvdimm/ocxl/Makefile | 7 + drivers/nvdimm/ocxl/main.c | 1975 +++++++++++++++++ drivers/nvdimm/ocxl/ocxlpmem.h | 197 ++ drivers/nvdimm/ocxl/ocxlpmem_internal.c | 280 +++ include/linux/memory_hotplug.h | 5 + include/misc/ocxl.h | 122 +- include/uapi/linux/ndctl.h | 1 + include/uapi/nvdimm/ocxlpmem.h | 127 ++ mm/memory_hotplug.c | 4 +- 24 files changed, 2983 insertions(+), 99 deletions(-) create mode 100644 drivers/nvdimm/ocxl/Kconfig create mode 100644 drivers/nvdimm/ocxl/Makefile create mode 100644 drivers/nvdimm/ocxl/main.c create mode 100644 drivers/nvdimm/ocxl/ocxlpmem.h create mode 100644 drivers/nvdimm/ocxl/ocxlpmem_internal.c create mode 100644 include/uapi/nvdimm/ocxlpmem.h -- 2.24.1
next reply other threads:[~2020-03-27 7:12 UTC|newest] Thread overview: 179+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-03-27 7:11 Alastair D'Silva [this message] 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 01/25] powerpc/powernv: Add OPAL calls for LPC memory alloc/release Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-04-01 22:51 ` Alastair D'Silva 2020-04-01 22:51 ` Alastair D'Silva 2020-04-01 22:51 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 02/25] mm/memory_hotplug: Allow check_hotplug_memory_addressable to be called from drivers Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-04-02 4:33 ` Alastair D'Silva 2020-04-02 4:33 ` Alastair D'Silva 2020-04-02 4:33 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 03/25] powerpc/powernv: Map & release OpenCAPI LPC memory Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-04-02 4:36 ` Alastair D'Silva 2020-04-02 4:36 ` Alastair D'Silva 2020-04-02 4:36 ` Alastair D'Silva 2020-04-02 10:41 ` Benjamin Herrenschmidt 2020-04-02 10:41 ` Benjamin Herrenschmidt 2020-04-03 4:27 ` Michael Ellerman 2020-04-03 4:27 ` Michael Ellerman 2020-04-03 4:27 ` Michael Ellerman 2020-03-27 7:11 ` [PATCH v4 04/25] ocxl: Remove unnecessary externs Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 05/25] ocxl: Address kernel doc errors & warnings Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 8:49 ` Dan Williams 2020-04-01 8:49 ` Dan Williams 2020-04-01 8:49 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 06/25] ocxl: Tally up the LPC memory on a link & allow it to be mapped Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-04-01 8:48 ` Dan Williams 2020-04-02 6:21 ` Andrew Donnellan 2020-04-02 6:21 ` Andrew Donnellan 2020-04-02 6:21 ` Andrew Donnellan 2020-03-27 7:11 ` [PATCH v4 07/25] ocxl: Add functions to map/unmap LPC memory Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 8:49 ` Dan Williams 2020-04-01 8:49 ` Dan Williams 2020-04-01 8:49 ` Dan Williams 2020-04-03 3:50 ` Alastair D'Silva 2020-04-03 3:50 ` Alastair D'Silva 2020-04-03 3:50 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 08/25] ocxl: Emit a log message showing how much LPC memory was detected Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 8:49 ` Dan Williams 2020-04-01 8:49 ` Dan Williams 2020-04-01 8:49 ` Dan Williams 2020-04-02 1:29 ` Joe Perches 2020-04-02 1:29 ` Joe Perches 2020-04-02 1:29 ` Joe Perches 2020-04-03 3:52 ` Alastair D'Silva 2020-04-03 3:52 ` Alastair D'Silva 2020-04-03 3:52 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 09/25] ocxl: Save the device serial number in ocxl_fn Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 10/25] nvdimm: Add driver for OpenCAPI Persistent Memory Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-29 2:56 ` Matthew Wilcox 2020-03-29 2:56 ` Matthew Wilcox 2020-03-29 2:56 ` Matthew Wilcox 2020-03-29 2:59 ` Matthew Wilcox 2020-03-29 2:59 ` Matthew Wilcox 2020-03-29 2:59 ` Matthew Wilcox 2020-04-01 8:49 ` Dan Williams 2020-04-01 8:49 ` Dan Williams 2020-04-01 8:49 ` Dan Williams 2020-04-01 19:35 ` Dan Williams 2020-04-01 19:35 ` Dan Williams 2020-04-01 19:35 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 11/25] powerpc: Enable the OpenCAPI Persistent Memory driver for powernv_defconfig Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 20:26 ` Dan Williams 2020-04-01 20:26 ` Dan Williams 2020-04-01 20:26 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 12/25] nvdimm/ocxl: Add register addresses & status values to the header Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-01 20:27 ` Dan Williams 2020-04-01 20:27 ` Dan Williams 2020-04-01 20:27 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 13/25] nvdimm/ocxl: Read the capability registers & wait for device ready Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-02 0:20 ` Dan Williams 2020-04-02 0:20 ` Dan Williams 2020-04-02 0:20 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 14/25] nvdimm/ocxl: Add support for Admin commands Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-02 6:41 ` Dan Williams 2020-04-02 6:41 ` Dan Williams 2020-04-02 6:41 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 15/25] nvdimm/ocxl: Register a character device for userspace to interact with Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-02 0:27 ` Dan Williams 2020-04-02 0:27 ` Dan Williams 2020-04-02 0:27 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 16/25] nvdimm/ocxl: Implement the Read Error Log command Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-03 0:54 ` Dan Williams 2020-04-03 0:54 ` Dan Williams 2020-04-03 0:54 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 17/25] nvdimm/ocxl: Add controller dump IOCTLs Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 18/25] nvdimm/ocxl: Add an IOCTL to report controller statistics Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 19/25] nvdimm/ocxl: Forward events to userspace Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-04-02 2:08 ` Dan Williams 2020-04-02 2:08 ` Dan Williams 2020-04-02 2:08 ` Dan Williams 2020-03-27 7:11 ` [PATCH v4 20/25] nvdimm/ocxl: Add an IOCTL to request controller health & perf data Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 21/25] nvdimm/ocxl: Implement the heartbeat command Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` [PATCH v4 22/25] nvdimm/ocxl: Add debug IOCTLs Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:11 ` Alastair D'Silva 2020-03-27 7:12 ` [PATCH v4 23/25] nvdimm/ocxl: Expose SMART data via ndctl Alastair D'Silva 2020-03-27 7:12 ` Alastair D'Silva 2020-03-27 7:12 ` Alastair D'Silva 2020-03-27 7:12 ` [PATCH v4 24/25] nvdimm/ocxl: Expose the serial number & firmware version in sysfs Alastair D'Silva 2020-03-27 7:12 ` Alastair D'Silva 2020-03-27 7:12 ` Alastair D'Silva 2020-03-27 7:12 ` [PATCH v4 25/25] MAINTAINERS: Add myself & nvdimm/ocxl to ocxl Alastair D'Silva 2020-03-27 7:12 ` Alastair D'Silva 2020-03-27 7:12 ` Alastair D'Silva 2020-04-01 8:47 ` [PATCH v4 00/25] Add support for OpenCAPI Persistent Memory devices Dan Williams 2020-04-01 8:47 ` Dan Williams 2020-04-01 8:47 ` Dan Williams 2020-04-01 22:44 ` Alastair D'Silva 2020-04-01 22:44 ` Alastair D'Silva 2020-04-01 22:44 ` Alastair D'Silva 2020-04-02 3:42 ` Michael Ellerman 2020-04-02 3:42 ` Michael Ellerman 2020-04-02 3:42 ` Michael Ellerman 2020-04-02 3:50 ` Oliver O'Halloran 2020-04-02 3:50 ` Oliver O'Halloran 2020-04-02 3:50 ` Oliver O'Halloran 2020-04-02 10:06 ` Michael Ellerman 2020-04-02 10:06 ` Michael Ellerman 2020-04-02 10:06 ` Michael Ellerman 2020-04-02 11:10 ` Greg Kurz 2020-04-02 11:10 ` Greg Kurz 2020-04-02 11:10 ` Greg Kurz
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