| Message ID | 20241210072721.157323-1-ajd@linux.ibm.com |
|---|---|
| Headers | show |
| Series | Remove cxl and cxlflash drivers | expand |
On 10/12/2024 08:27, Andrew Donnellan wrote: > Remove the cxlflash driver for IBM CAPI Flash devices. > > The cxlflash driver has received minimal maintenance for some time, and > the CAPI Flash hardware that uses it is no longer commercially available. > > Thanks to Uma Krishnan, Matthew Ochs and Manoj Kumar for their work on > this driver over the years. > > Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>" Fred
Andrew Donnellan <ajd@linux.ibm.com> writes: > This series removes the cxl and cxlflash drivers for IBM CAPI devices. > > CAPI devices have been out of production for some time, and we're not > aware of any remaining users who are likely to want a modern kernel. > There's almost certainly some remaining driver bugs and we don't have much > hardware available to properly test the drivers any more. Removing these > drivers will also mean we can get rid of a non-trivial amount of support > code in arch/powerpc. > > Thanks to everyone who's worked on these drivers over the last decade. It would be good to explain that this only removes support for the original CAPI interface - not the Power9 "OpenCAPI", which is still supported by drivers/misc/ocxl. cheers
On Tue, 2024-12-17 at 14:26 +1100, Michael Ellerman wrote: > It would be good to explain that this only removes support for the > original CAPI interface - not the Power9 "OpenCAPI", which is still > supported by drivers/misc/ocxl. Agreed, will mention if/when I respin this
This series removes the cxl and cxlflash drivers for IBM CAPI devices. CAPI devices have been out of production for some time, and we're not aware of any remaining users who are likely to want a modern kernel. There's almost certainly some remaining driver bugs and we don't have much hardware available to properly test the drivers any more. Removing these drivers will also mean we can get rid of a non-trivial amount of support code in arch/powerpc. Thanks to everyone who's worked on these drivers over the last decade. This series applies on top of [0]. [0] https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=436003&state=* Andrew Donnellan (2): cxlflash: Remove driver cxl: Remove driver .../ABI/{obsolete => removed}/sysfs-class-cxl | 55 +- Documentation/arch/powerpc/cxl.rst | 469 -- Documentation/arch/powerpc/cxlflash.rst | 433 -- Documentation/arch/powerpc/index.rst | 2 - .../userspace-api/ioctl/ioctl-number.rst | 4 +- MAINTAINERS | 21 - arch/powerpc/configs/skiroot_defconfig | 1 - arch/powerpc/include/asm/copro.h | 6 - arch/powerpc/include/asm/device.h | 3 - arch/powerpc/include/asm/pnv-pci.h | 17 - arch/powerpc/mm/book3s64/hash_native.c | 13 +- arch/powerpc/mm/book3s64/hash_utils.c | 10 +- arch/powerpc/mm/book3s64/pgtable.c | 1 - arch/powerpc/mm/book3s64/slice.c | 6 +- arch/powerpc/mm/copro_fault.c | 12 - arch/powerpc/platforms/powernv/Makefile | 1 - arch/powerpc/platforms/powernv/pci-cxl.c | 153 - arch/powerpc/platforms/powernv/pci-ioda.c | 43 - arch/powerpc/platforms/powernv/pci.c | 61 - arch/powerpc/platforms/powernv/pci.h | 2 - drivers/misc/Kconfig | 1 - drivers/misc/Makefile | 1 - drivers/misc/cxl/Kconfig | 28 - drivers/misc/cxl/Makefile | 14 - drivers/misc/cxl/api.c | 532 --- drivers/misc/cxl/base.c | 126 - drivers/misc/cxl/context.c | 362 -- drivers/misc/cxl/cxl.h | 1135 ----- drivers/misc/cxl/cxllib.c | 271 -- drivers/misc/cxl/debugfs.c | 134 - drivers/misc/cxl/fault.c | 341 -- drivers/misc/cxl/file.c | 699 --- drivers/misc/cxl/flash.c | 538 --- drivers/misc/cxl/guest.c | 1208 ----- drivers/misc/cxl/hcalls.c | 643 --- drivers/misc/cxl/hcalls.h | 200 - drivers/misc/cxl/irq.c | 450 -- drivers/misc/cxl/main.c | 383 -- drivers/misc/cxl/native.c | 1592 ------- drivers/misc/cxl/of.c | 346 -- drivers/misc/cxl/pci.c | 2103 --------- drivers/misc/cxl/sysfs.c | 771 ---- drivers/misc/cxl/trace.c | 9 - drivers/misc/cxl/trace.h | 691 --- drivers/misc/cxl/vphb.c | 309 -- drivers/scsi/Kconfig | 1 - drivers/scsi/Makefile | 1 - drivers/scsi/cxlflash/Kconfig | 15 - drivers/scsi/cxlflash/Makefile | 5 - drivers/scsi/cxlflash/backend.h | 48 - drivers/scsi/cxlflash/common.h | 340 -- drivers/scsi/cxlflash/cxl_hw.c | 177 - drivers/scsi/cxlflash/lunmgt.c | 278 -- drivers/scsi/cxlflash/main.c | 3970 ----------------- drivers/scsi/cxlflash/main.h | 129 - drivers/scsi/cxlflash/ocxl_hw.c | 1399 ------ drivers/scsi/cxlflash/ocxl_hw.h | 72 - drivers/scsi/cxlflash/sislite.h | 560 --- drivers/scsi/cxlflash/superpipe.c | 2218 --------- drivers/scsi/cxlflash/superpipe.h | 150 - drivers/scsi/cxlflash/vlun.c | 1336 ------ drivers/scsi/cxlflash/vlun.h | 82 - include/misc/cxl-base.h | 48 - include/misc/cxl.h | 265 -- include/misc/cxllib.h | 129 - include/uapi/misc/cxl.h | 156 - include/uapi/scsi/cxlflash_ioctl.h | 276 -- .../filesystems/statmount/statmount_test.c | 13 +- 68 files changed, 49 insertions(+), 25819 deletions(-) rename Documentation/ABI/{obsolete => removed}/sysfs-class-cxl (87%) delete mode 100644 Documentation/arch/powerpc/cxl.rst delete mode 100644 Documentation/arch/powerpc/cxlflash.rst delete mode 100644 arch/powerpc/platforms/powernv/pci-cxl.c delete mode 100644 drivers/misc/cxl/Kconfig delete mode 100644 drivers/misc/cxl/Makefile delete mode 100644 drivers/misc/cxl/api.c delete mode 100644 drivers/misc/cxl/base.c delete mode 100644 drivers/misc/cxl/context.c delete mode 100644 drivers/misc/cxl/cxl.h delete mode 100644 drivers/misc/cxl/cxllib.c delete mode 100644 drivers/misc/cxl/debugfs.c delete mode 100644 drivers/misc/cxl/fault.c delete mode 100644 drivers/misc/cxl/file.c delete mode 100644 drivers/misc/cxl/flash.c delete mode 100644 drivers/misc/cxl/guest.c delete mode 100644 drivers/misc/cxl/hcalls.c delete mode 100644 drivers/misc/cxl/hcalls.h delete mode 100644 drivers/misc/cxl/irq.c delete mode 100644 drivers/misc/cxl/main.c delete mode 100644 drivers/misc/cxl/native.c delete mode 100644 drivers/misc/cxl/of.c delete mode 100644 drivers/misc/cxl/pci.c delete mode 100644 drivers/misc/cxl/sysfs.c delete mode 100644 drivers/misc/cxl/trace.c delete mode 100644 drivers/misc/cxl/trace.h delete mode 100644 drivers/misc/cxl/vphb.c delete mode 100644 drivers/scsi/cxlflash/Kconfig delete mode 100644 drivers/scsi/cxlflash/Makefile delete mode 100644 drivers/scsi/cxlflash/backend.h delete mode 100644 drivers/scsi/cxlflash/common.h delete mode 100644 drivers/scsi/cxlflash/cxl_hw.c delete mode 100644 drivers/scsi/cxlflash/lunmgt.c delete mode 100644 drivers/scsi/cxlflash/main.c delete mode 100644 drivers/scsi/cxlflash/main.h delete mode 100644 drivers/scsi/cxlflash/ocxl_hw.c delete mode 100644 drivers/scsi/cxlflash/ocxl_hw.h delete mode 100644 drivers/scsi/cxlflash/sislite.h delete mode 100644 drivers/scsi/cxlflash/superpipe.c delete mode 100644 drivers/scsi/cxlflash/superpipe.h delete mode 100644 drivers/scsi/cxlflash/vlun.c delete mode 100644 drivers/scsi/cxlflash/vlun.h delete mode 100644 include/misc/cxl-base.h delete mode 100644 include/misc/cxl.h delete mode 100644 include/misc/cxllib.h delete mode 100644 include/uapi/misc/cxl.h delete mode 100644 include/uapi/scsi/cxlflash_ioctl.h