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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /include/uapi/cxl | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'include/uapi/cxl')
| -rw-r--r-- | include/uapi/cxl/features.h | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/include/uapi/cxl/features.h b/include/uapi/cxl/features.h new file mode 100644 index 000000000..490606d76 --- /dev/null +++ b/include/uapi/cxl/features.h @@ -0,0 +1,179 @@ +/* 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_ + +#include <linux/types.h> + +typedef unsigned char __uapi_uuid_t[16]; + +#ifdef __KERNEL__ +#include <linux/uuid.h> +/* + * Note, __uapi_uuid_t is 1-byte aligned on modern compilers and 4-byte + * aligned on others. Ensure that __uapi_uuid_t in a struct is placed at + * a 4-byte aligned offset, or the structure is packed, to ensure + * consistent padding. + */ +static_assert(sizeof(__uapi_uuid_t) == sizeof(uuid_t)); +#define __uapi_uuid_t uuid_t +#endif + +/* + * 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__)); + +/* 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) +#define CXL_CMD_EFFECTS_RESERVED GENMASK(15, 12) + +/* + * 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 { + __uapi_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__)); + +/* @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) + +/* + * 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__)); + +/* + * Get Feature CXL spec r3.2 Spec 8.2.9.6.2 + */ + +/* + * 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 { + __uapi_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 +}; + +/* + * Set Feature CXL spec r3.2 8.2.9.6.3 + */ + +/* + * 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 */, + __uapi_uuid_t uuid; + __le32 flags; + __le16 offset; + __u8 version; + __u8 rsvd[9]; + ); + __u8 feat_data[]; +} __packed; + +/* + * 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 +}; + +#define CXL_SET_FEAT_FLAG_DATA_TRANSFER_MASK GENMASK(2, 0) +#define CXL_SET_FEAT_FLAG_DATA_SAVED_ACROSS_RESET BIT(3) + +#endif |
