diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-07 09:44:06 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-07 09:44:06 -0700 |
commit | b6ffe9ba46016f8351896ccee33bebcd0e5ea7c0 (patch) | |
tree | 839a5a070eabe8851797330ea77ca7eb7c93bcc1 /include/uapi | |
parent | 9f45efb9286268e01d5022d34a58a68f53ca3072 (diff) | |
parent | 9d92573fff3ec70785ef1815cc80573f70e7a921 (diff) |
Merge tag 'libnvdimm-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"libnvdimm updates for the latest ACPI and UEFI specifications. This
pull request also includes new 'struct dax_operations' enabling to
undo the abuse of copy_user_nocache() for copy operations to pmem.
The dax work originally missed 4.12 to address concerns raised by Al.
Summary:
- Introduce the _flushcache() family of memory copy helpers and use
them for persistent memory write operations on x86. The
_flushcache() semantic indicates that the cache is either bypassed
for the copy operation (movnt) or any lines dirtied by the copy
operation are written back (clwb, clflushopt, or clflush).
- Extend dax_operations with ->copy_from_iter() and ->flush()
operations. These operations and other infrastructure updates allow
all persistent memory specific dax functionality to be pushed into
libnvdimm and the pmem driver directly. It also allows dax-specific
sysfs attributes to be linked to a host device, for example:
/sys/block/pmem0/dax/write_cache
- Add support for the new NVDIMM platform/firmware mechanisms
introduced in ACPI 6.2 and UEFI 2.7. This support includes the v1.2
namespace label format, extensions to the address-range-scrub
command set, new error injection commands, and a new BTT
(block-translation-table) layout. These updates support inter-OS
and pre-OS compatibility.
- Fix a longstanding memory corruption bug in nfit_test.
- Make the pmem and nvdimm-region 'badblocks' sysfs files poll(2)
capable.
- Miscellaneous fixes and small updates across libnvdimm and the nfit
driver.
Acknowledgements that came after the branch was pushed: commit
6aa734a2f38e ("libnvdimm, region, pmem: fix 'badblocks'
sysfs_get_dirent() reference lifetime") was reviewed by Toshi Kani
<toshi.kani@hpe.com>"
* tag 'libnvdimm-for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (42 commits)
libnvdimm, namespace: record 'lbasize' for pmem namespaces
acpi/nfit: Issue Start ARS to retrieve existing records
libnvdimm: New ACPI 6.2 DSM functions
acpi, nfit: Show bus_dsm_mask in sysfs
libnvdimm, acpi, nfit: Add bus level dsm mask for pass thru.
acpi, nfit: Enable DSM pass thru for root functions.
libnvdimm: passthru functions clear to send
libnvdimm, btt: convert some info messages to warn/err
libnvdimm, region, pmem: fix 'badblocks' sysfs_get_dirent() reference lifetime
libnvdimm: fix the clear-error check in nsio_rw_bytes
libnvdimm, btt: fix btt_rw_page not returning errors
acpi, nfit: quiet invalid block-aperture-region warnings
libnvdimm, btt: BTT updates for UEFI 2.7 format
acpi, nfit: constify *_attribute_group
libnvdimm, pmem: disable dax flushing when pmem is fronting a volatile region
libnvdimm, pmem, dax: export a cache control attribute
dax: convert to bitmask for flags
dax: remove default copy_from_iter fallback
libnvdimm, nfit: enable support for volatile ranges
libnvdimm, pmem: fix persistence warning
...
Diffstat (limited to 'include/uapi')
-rw-r--r-- | include/uapi/linux/ndctl.h | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/include/uapi/linux/ndctl.h b/include/uapi/linux/ndctl.h index 7ad3863cb88b..6d3c54264d8e 100644 --- a/include/uapi/linux/ndctl.h +++ b/include/uapi/linux/ndctl.h @@ -105,7 +105,8 @@ struct nd_cmd_ars_cap { __u32 status; __u32 max_ars_out; __u32 clear_err_unit; - __u32 reserved; + __u16 flags; + __u16 reserved; } __packed; struct nd_cmd_ars_start { @@ -144,6 +145,43 @@ struct nd_cmd_clear_error { __u64 cleared; } __packed; +struct nd_cmd_trans_spa { + __u64 spa; + __u32 status; + __u8 flags; + __u8 _reserved[3]; + __u64 trans_length; + __u32 num_nvdimms; + struct nd_nvdimm_device { + __u32 nfit_device_handle; + __u32 _reserved; + __u64 dpa; + } __packed devices[0]; + +} __packed; + +struct nd_cmd_ars_err_inj { + __u64 err_inj_spa_range_base; + __u64 err_inj_spa_range_length; + __u8 err_inj_options; + __u32 status; +} __packed; + +struct nd_cmd_ars_err_inj_clr { + __u64 err_inj_clr_spa_range_base; + __u64 err_inj_clr_spa_range_length; + __u32 status; +} __packed; + +struct nd_cmd_ars_err_inj_stat { + __u32 status; + __u32 inj_err_rec_count; + struct nd_error_stat_query_record { + __u64 err_inj_stat_spa_range_base; + __u64 err_inj_stat_spa_range_length; + } __packed record[0]; +} __packed; + enum { ND_CMD_IMPLEMENTED = 0, @@ -169,6 +207,7 @@ enum { enum { ND_ARS_VOLATILE = 1, ND_ARS_PERSISTENT = 2, + ND_ARS_RETURN_PREV_DATA = 1 << 1, ND_CONFIG_LOCKED = 1, }; @@ -179,6 +218,7 @@ static inline const char *nvdimm_bus_cmd_name(unsigned cmd) [ND_CMD_ARS_START] = "ars_start", [ND_CMD_ARS_STATUS] = "ars_status", [ND_CMD_CLEAR_ERROR] = "clear_error", + [ND_CMD_CALL] = "cmd_call", }; if (cmd < ARRAY_SIZE(names) && names[cmd]) |