diff options
Diffstat (limited to 'drivers/cxl/core/regs.c')
| -rw-r--r-- | drivers/cxl/core/regs.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/cxl/core/regs.c b/drivers/cxl/core/regs.c index 8535a7b94f28..41de4a136ecd 100644 --- a/drivers/cxl/core/regs.c +++ b/drivers/cxl/core/regs.c @@ -1,6 +1,5 @@ // SPDX-License-Identifier: GPL-2.0-only /* Copyright(c) 2020 Intel Corporation. */ - #include <linux/io-64-nonatomic-lo-hi.h> #include <linux/device.h> #include <linux/slab.h> @@ -8,6 +7,20 @@ #include <cxlmem.h> /** + * DOC: cxl registers + * + * CXL device capabilities are enumerated by PCI DVSEC (Designated + * Vendor-specific) and / or descriptors provided by platform firmware. + * They can be defined as a set like the device and component registers + * mandated by CXL Section 8.1.12.2 Memory Device PCIe Capabilities and + * Extended Capabilities, or they can be individual capabilities + * appended to bridged and endpoint devices. + * + * Provide common infrastructure for enumerating and mapping these + * discrete capabilities. + */ + +/** * cxl_probe_component_regs() - Detect CXL Component register blocks * @dev: Host device of the @base mapping * @base: Mapping containing the HDM Decoder Capability Header |