Contact: linux-cxl@vger.kernel.org
Description:
(RW) When a CXL decoder is of devtype "cxl_decoder_endpoint" it
- translates from a host physical address range, to a device local
- address range. Device-local address ranges are further split
- into a 'ram' (volatile memory) range and 'pmem' (persistent
- memory) range. The 'mode' attribute emits one of 'ram', 'pmem',
- 'mixed', or 'none'. The 'mixed' indication is for error cases
- when a decoder straddles the volatile/persistent partition
- boundary, and 'none' indicates the decoder is not actively
- decoding, or no DPA allocation policy has been set.
+ translates from a host physical address range, to a device
+ local address range. Device-local address ranges are further
+ split into a 'ram' (volatile memory) range and 'pmem'
+ (persistent memory) range. The 'mode' attribute emits one of
+ 'ram', 'pmem', or 'none'. The 'none' indicates the decoder is
+ not actively decoding, or no DPA allocation policy has been
+ set.
'mode' can be written, when the decoder is in the 'disabled'
state, with either 'ram' or 'pmem' to set the boundaries for the