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cxl: Move cxl feature command structs to user header
In preparation for cxl fwctl enabling, move data structures related to cxl feature commands to a user header file. Reviewed-by; Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://patch.msgid.link/r/20250307205648.1021626-3-dave.jiang@intel.com Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Li Ming <ming.li@zohomail.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,169 @@ | ||
| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ | ||
| /* | ||
| * Copyright (c) 2024,2025, Intel Corporation | ||
| * | ||
| * These are definitions for the mailbox command interface of CXL subsystem. | ||
| */ | ||
| #ifndef _UAPI_CXL_FEATURES_H_ | ||
| #define _UAPI_CXL_FEATURES_H_ | ||
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| #include <linux/types.h> | ||
| #ifndef __KERNEL__ | ||
| #include <uuid/uuid.h> | ||
| #else | ||
| #include <linux/uuid.h> | ||
| #endif | ||
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||
| /* | ||
| * struct cxl_mbox_get_sup_feats_in - Get Supported Features input | ||
| * | ||
| * @count: bytes of Feature data to return in output | ||
| * @start_idx: index of first requested Supported Feature Entry, 0 based. | ||
| * @reserved: reserved field, must be 0s. | ||
| * | ||
| * Get Supported Features (0x500h) CXL r3.2 8.2.9.6.1 command. | ||
| * Input block for Get support Feature | ||
| */ | ||
| struct cxl_mbox_get_sup_feats_in { | ||
| __le32 count; | ||
| __le16 start_idx; | ||
| __u8 reserved[2]; | ||
| } __attribute__ ((__packed__)); | ||
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| /* CXL spec r3.2 Table 8-87 command effects */ | ||
| #define CXL_CMD_CONFIG_CHANGE_COLD_RESET BIT(0) | ||
| #define CXL_CMD_CONFIG_CHANGE_IMMEDIATE BIT(1) | ||
| #define CXL_CMD_DATA_CHANGE_IMMEDIATE BIT(2) | ||
| #define CXL_CMD_POLICY_CHANGE_IMMEDIATE BIT(3) | ||
| #define CXL_CMD_LOG_CHANGE_IMMEDIATE BIT(4) | ||
| #define CXL_CMD_SECURITY_STATE_CHANGE BIT(5) | ||
| #define CXL_CMD_BACKGROUND BIT(6) | ||
| #define CXL_CMD_BGCMD_ABORT_SUPPORTED BIT(7) | ||
| #define CXL_CMD_EFFECTS_VALID BIT(9) | ||
| #define CXL_CMD_CONFIG_CHANGE_CONV_RESET BIT(10) | ||
| #define CXL_CMD_CONFIG_CHANGE_CXL_RESET BIT(11) | ||
|
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| /* | ||
| * struct cxl_feat_entry - Supported Feature Entry | ||
| * @uuid: UUID of the Feature | ||
| * @id: id to identify the feature. 0 based | ||
| * @get_feat_size: max bytes required for Get Feature command for this Feature | ||
| * @set_feat_size: max bytes required for Set Feature command for this Feature | ||
| * @flags: attribute flags | ||
| * @get_feat_ver: Get Feature version | ||
| * @set_feat_ver: Set Feature version | ||
| * @effects: Set Feature command effects | ||
| * @reserved: reserved, must be 0 | ||
| * | ||
| * CXL spec r3.2 Table 8-109 | ||
| * Get Supported Features Supported Feature Entry | ||
| */ | ||
| struct cxl_feat_entry { | ||
| uuid_t uuid; | ||
| __le16 id; | ||
| __le16 get_feat_size; | ||
| __le16 set_feat_size; | ||
| __le32 flags; | ||
| __u8 get_feat_ver; | ||
| __u8 set_feat_ver; | ||
| __le16 effects; | ||
| __u8 reserved[18]; | ||
| } __attribute__ ((__packed__)); | ||
|
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| /* @flags field for 'struct cxl_feat_entry' */ | ||
| #define CXL_FEATURE_F_CHANGEABLE BIT(0) | ||
| #define CXL_FEATURE_F_PERSIST_FW_UPDATE BIT(4) | ||
| #define CXL_FEATURE_F_DEFAULT_SEL BIT(5) | ||
| #define CXL_FEATURE_F_SAVED_SEL BIT(6) | ||
|
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||
| /* | ||
| * struct cxl_mbox_get_sup_feats_out - Get Supported Features output | ||
| * @num_entries: number of Supported Feature Entries returned | ||
| * @supported_feats: number of supported Features | ||
| * @reserved: reserved, must be 0s. | ||
| * @ents: Supported Feature Entries array | ||
| * | ||
| * CXL spec r3.2 Table 8-108 | ||
| * Get supported Features Output Payload | ||
| */ | ||
| struct cxl_mbox_get_sup_feats_out { | ||
| __struct_group(cxl_mbox_get_sup_feats_out_hdr, hdr, /* no attrs */, | ||
| __le16 num_entries; | ||
| __le16 supported_feats; | ||
| __u8 reserved[4]; | ||
| ); | ||
| struct cxl_feat_entry ents[] __counted_by_le(num_entries); | ||
| } __attribute__ ((__packed__)); | ||
|
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||
| /* | ||
| * Get Feature CXL spec r3.2 Spec 8.2.9.6.2 | ||
| */ | ||
|
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| /* | ||
| * struct cxl_mbox_get_feat_in - Get Feature input | ||
| * @uuid: UUID for Feature | ||
| * @offset: offset of the first byte in Feature data for output payload | ||
| * @count: count in bytes of Feature data returned | ||
| * @selection: 0 current value, 1 default value, 2 saved value | ||
| * | ||
| * CXL spec r3.2 section 8.2.9.6.2 Table 8-99 | ||
| */ | ||
| struct cxl_mbox_get_feat_in { | ||
| uuid_t uuid; | ||
| __le16 offset; | ||
| __le16 count; | ||
| __u8 selection; | ||
| } __attribute__ ((__packed__)); | ||
|
|
||
| /* | ||
| * enum cxl_get_feat_selection - selection field of Get Feature input | ||
| */ | ||
| enum cxl_get_feat_selection { | ||
| CXL_GET_FEAT_SEL_CURRENT_VALUE, | ||
| CXL_GET_FEAT_SEL_DEFAULT_VALUE, | ||
| CXL_GET_FEAT_SEL_SAVED_VALUE, | ||
| CXL_GET_FEAT_SEL_MAX | ||
| }; | ||
|
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| /* | ||
| * Set Feature CXL spec r3.2 8.2.9.6.3 | ||
| */ | ||
|
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| /* | ||
| * struct cxl_mbox_set_feat_in - Set Features input | ||
| * @uuid: UUID for Feature | ||
| * @flags: set feature flags | ||
| * @offset: byte offset of Feature data to update | ||
| * @version: Feature version of the data in Feature Data | ||
| * @rsvd: reserved, must be 0s. | ||
| * @feat_data: raw byte stream of Features data to update | ||
| * | ||
| * CXL spec r3.2 section 8.2.9.6.3 Table 8-101 | ||
| */ | ||
| struct cxl_mbox_set_feat_in { | ||
| __struct_group(cxl_mbox_set_feat_hdr, hdr, /* no attrs */, | ||
| uuid_t uuid; | ||
| __le32 flags; | ||
| __le16 offset; | ||
| __u8 version; | ||
| __u8 rsvd[9]; | ||
| ); | ||
| __u8 feat_data[]; | ||
| } __packed; | ||
|
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| /* | ||
| * enum cxl_set_feat_flag_data_transfer - Set Feature flags field | ||
| */ | ||
| enum cxl_set_feat_flag_data_transfer { | ||
| CXL_SET_FEAT_FLAG_FULL_DATA_TRANSFER = 0, | ||
| CXL_SET_FEAT_FLAG_INITIATE_DATA_TRANSFER, | ||
| CXL_SET_FEAT_FLAG_CONTINUE_DATA_TRANSFER, | ||
| CXL_SET_FEAT_FLAG_FINISH_DATA_TRANSFER, | ||
| CXL_SET_FEAT_FLAG_ABORT_DATA_TRANSFER, | ||
| CXL_SET_FEAT_FLAG_DATA_TRANSFER_MAX | ||
| }; | ||
|
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| #define CXL_SET_FEAT_FLAG_DATA_TRANSFER_MASK GENMASK(2, 0) | ||
| #define CXL_SET_FEAT_FLAG_DATA_SAVED_ACROSS_RESET BIT(3) | ||
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| #endif |