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Diffstat (limited to 'original/uapi/linux/cxl_mem.h')
| -rw-r--r-- | original/uapi/linux/cxl_mem.h | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/original/uapi/linux/cxl_mem.h b/original/uapi/linux/cxl_mem.h deleted file mode 100644 index 3155382..0000000 --- a/original/uapi/linux/cxl_mem.h +++ /dev/null @@ -1,172 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ -/* - * CXL IOCTLs for Memory Devices - */ - -#ifndef _UAPI_CXL_MEM_H_ -#define _UAPI_CXL_MEM_H_ - -#include <linux/types.h> - -/** - * DOC: UAPI - * - * Not all of all commands that the driver supports are always available for use - * by userspace. Userspace must check the results from the QUERY command in - * order to determine the live set of commands. - */ - -#define CXL_MEM_QUERY_COMMANDS _IOR(0xCE, 1, struct cxl_mem_query_commands) -#define CXL_MEM_SEND_COMMAND _IOWR(0xCE, 2, struct cxl_send_command) - -#define CXL_CMDS \ - ___C(INVALID, "Invalid Command"), \ - ___C(IDENTIFY, "Identify Command"), \ - ___C(RAW, "Raw device command"), \ - ___C(GET_SUPPORTED_LOGS, "Get Supported Logs"), \ - ___C(GET_FW_INFO, "Get FW Info"), \ - ___C(GET_PARTITION_INFO, "Get Partition Information"), \ - ___C(GET_LSA, "Get Label Storage Area"), \ - ___C(GET_HEALTH_INFO, "Get Health Info"), \ - ___C(GET_LOG, "Get Log"), \ - ___C(MAX, "invalid / last command") - -#define ___C(a, b) CXL_MEM_COMMAND_ID_##a -enum { CXL_CMDS }; - -#undef ___C -#define ___C(a, b) { b } -static const struct { - const char *name; -} cxl_command_names[] = { CXL_CMDS }; - -/* - * Here's how this actually breaks out: - * cxl_command_names[] = { - * [CXL_MEM_COMMAND_ID_INVALID] = { "Invalid Command" }, - * [CXL_MEM_COMMAND_ID_IDENTIFY] = { "Identify Command" }, - * ... - * [CXL_MEM_COMMAND_ID_MAX] = { "invalid / last command" }, - * }; - */ - -#undef ___C - -/** - * struct cxl_command_info - Command information returned from a query. - * @id: ID number for the command. - * @flags: Flags that specify command behavior. - * @size_in: Expected input size, or -1 if variable length. - * @size_out: Expected output size, or -1 if variable length. - * - * Represents a single command that is supported by both the driver and the - * hardware. This is returned as part of an array from the query ioctl. The - * following would be a command that takes a variable length input and returns 0 - * bytes of output. - * - * - @id = 10 - * - @flags = 0 - * - @size_in = -1 - * - @size_out = 0 - * - * See struct cxl_mem_query_commands. - */ -struct cxl_command_info { - __u32 id; - - __u32 flags; -#define CXL_MEM_COMMAND_FLAG_MASK GENMASK(0, 0) - - __s32 size_in; - __s32 size_out; -}; - -/** - * struct cxl_mem_query_commands - Query supported commands. - * @n_commands: In/out parameter. When @n_commands is > 0, the driver will - * return min(num_support_commands, n_commands). When @n_commands - * is 0, driver will return the number of total supported commands. - * @rsvd: Reserved for future use. - * @commands: Output array of supported commands. This array must be allocated - * by userspace to be at least min(num_support_commands, @n_commands) - * - * Allow userspace to query the available commands supported by both the driver, - * and the hardware. Commands that aren't supported by either the driver, or the - * hardware are not returned in the query. - * - * Examples: - * - * - { .n_commands = 0 } // Get number of supported commands - * - { .n_commands = 15, .commands = buf } // Return first 15 (or less) - * supported commands - * - * See struct cxl_command_info. - */ -struct cxl_mem_query_commands { - /* - * Input: Number of commands to return (space allocated by user) - * Output: Number of commands supported by the driver/hardware - * - * If n_commands is 0, kernel will only return number of commands and - * not try to populate commands[], thus allowing userspace to know how - * much space to allocate - */ - __u32 n_commands; - __u32 rsvd; - - struct cxl_command_info __user commands[]; /* out: supported commands */ -}; - -/** - * struct cxl_send_command - Send a command to a memory device. - * @id: The command to send to the memory device. This must be one of the - * commands returned by the query command. - * @flags: Flags for the command (input). - * @raw: Special fields for raw commands - * @raw.opcode: Opcode passed to hardware when using the RAW command. - * @raw.rsvd: Must be zero. - * @rsvd: Must be zero. - * @retval: Return value from the memory device (output). - * @in: Parameters associated with input payload. - * @in.size: Size of the payload to provide to the device (input). - * @in.rsvd: Must be zero. - * @in.payload: Pointer to memory for payload input, payload is little endian. - * @out: Parameters associated with output payload. - * @out.size: Size of the payload received from the device (input/output). This - * field is filled in by userspace to let the driver know how much - * space was allocated for output. It is populated by the driver to - * let userspace know how large the output payload actually was. - * @out.rsvd: Must be zero. - * @out.payload: Pointer to memory for payload output, payload is little endian. - * - * Mechanism for userspace to send a command to the hardware for processing. The - * driver will do basic validation on the command sizes. In some cases even the - * payload may be introspected. Userspace is required to allocate large enough - * buffers for size_out which can be variable length in certain situations. - */ -struct cxl_send_command { - __u32 id; - __u32 flags; - union { - struct { - __u16 opcode; - __u16 rsvd; - } raw; - __u32 rsvd; - }; - __u32 retval; - - struct { - __s32 size; - __u32 rsvd; - __u64 payload; - } in; - - struct { - __s32 size; - __u32 rsvd; - __u64 payload; - } out; -}; - -#endif |