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cxl for v5.16

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- Fix support for platforms that do not enumerate every ACPI0016 (CXL
   Host Bridge) in the CHBS (ACPI Host Bridge Structure).
 
 - Introduce a common pci_find_dvsec_capability() helper, clean up open
   coded implementations in various drivers.
 
 - Add 'cxl_test' for regression testing CXL subsystem ABIs. 'cxl_test'
   is a module built from tools/testing/cxl/ that mocks up a CXL topology
   to augment the nascent support for emulation of CXL devices in QEMU.
 
 - Convert libnvdimm to use the uuid API.
 
 - Complete the definition of CXL namespace labels in libnvdimm.
 
 - Tunnel libnvdimm label operations from nd_ioctl() back to the CXL
   mailbox driver. Enable 'ndctl {read,write}-labels' for CXL.
 
 - Continue to sort and refactor functionality into distinct driver and
   core-infrastructure buckets. For example, mailbox handling is now a
   generic core capability consumed by the PCI and cxl_test drivers.
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Merge tag 'cxl-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Pull cxl updates from Dan Williams:
 "More preparation and plumbing work in the CXL subsystem.

  From an end user perspective the highlight here is lighting up the CXL
  Persistent Memory related commands (label read / write) with the
  generic ioctl() front-end in LIBNVDIMM.

  Otherwise, the ability to instantiate new persistent and volatile
  memory regions is still on track for v5.17.

  Summary:

   - Fix support for platforms that do not enumerate every ACPI0016 (CXL
     Host Bridge) in the CHBS (ACPI Host Bridge Structure).

   - Introduce a common pci_find_dvsec_capability() helper, clean up
     open coded implementations in various drivers.

   - Add 'cxl_test' for regression testing CXL subsystem ABIs.
     'cxl_test' is a module built from tools/testing/cxl/ that mocks up
     a CXL topology to augment the nascent support for emulation of CXL
     devices in QEMU.

   - Convert libnvdimm to use the uuid API.

   - Complete the definition of CXL namespace labels in libnvdimm.

   - Tunnel libnvdimm label operations from nd_ioctl() back to the CXL
     mailbox driver. Enable 'ndctl {read,write}-labels' for CXL.

   - Continue to sort and refactor functionality into distinct driver
     and core-infrastructure buckets. For example, mailbox handling is
     now a generic core capability consumed by the PCI and cxl_test
     drivers"

* tag 'cxl-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (34 commits)
  ocxl: Use pci core's DVSEC functionality
  cxl/pci: Use pci core's DVSEC functionality
  PCI: Add pci_find_dvsec_capability to find designated VSEC
  cxl/pci: Split cxl_pci_setup_regs()
  cxl/pci: Add @base to cxl_register_map
  cxl/pci: Make more use of cxl_register_map
  cxl/pci: Remove pci request/release regions
  cxl/pci: Fix NULL vs ERR_PTR confusion
  cxl/pci: Remove dev_dbg for unknown register blocks
  cxl/pci: Convert register block identifiers to an enum
  cxl/acpi: Do not fail cxl_acpi_probe() based on a missing CHBS
  cxl/pci: Disambiguate cxl_pci further from cxl_mem
  Documentation/cxl: Add bus internal docs
  cxl/core: Split decoder setup into alloc + add
  tools/testing/cxl: Introduce a mock memory device + driver
  cxl/mbox: Move command definitions to common location
  cxl/bus: Populate the target list at decoder create
  tools/testing/cxl: Introduce a mocked-up CXL port hierarchy
  cxl/pmem: Add support for multiple nvdimm-bridge objects
  cxl/pmem: Translate NVDIMM label commands to CXL label commands
  ...
This commit is contained in:
Linus Torvalds 2021-11-08 11:49:48 -08:00
commit dd72945c43
36 changed files with 3275 additions and 1496 deletions
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4
include/linux/nd.h
View file

@ -88,7 +88,7 @@ struct nd_namespace_pmem {
struct nd_namespace_io nsio;
unsigned long lbasize;
char *alt_name;
u8 *uuid;
uuid_t *uuid;
int id;
};
@ -105,7 +105,7 @@ struct nd_namespace_pmem {
struct nd_namespace_blk {
struct nd_namespace_common common;
char *alt_name;
u8 *uuid;
uuid_t *uuid;
int id;
unsigned long lbasize;
resource_size_t size;

1
include/linux/pci.h
View file

@ -1132,6 +1132,7 @@ u16 pci_find_ext_capability(struct pci_dev *dev, int cap);
u16 pci_find_next_ext_capability(struct pci_dev *dev, u16 pos, int cap);
struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
u16 pci_find_vsec_capability(struct pci_dev *dev, u16 vendor, int cap);
u16 pci_find_dvsec_capability(struct pci_dev *dev, u16 vendor, u16 dvsec);
u64 pci_get_dsn(struct pci_dev *dev);