PNG  IHDR pHYs   OiCCPPhotoshop ICC profilexڝSgTS=BKKoR RB&*! J!QEEȠQ, !{kּ> H3Q5 B.@ $pd!s#~<<+"x M0B\t8K@zB@F&S`cbP-`'{[! eDh;VEX0fK9-0IWfH  0Q){`##xFW<+*x<$9E[-qWW.(I+6aa@.y24x6_-"bbϫp@t~,/;m%h^ uf@Wp~<5j>{-]cK'Xto(hw?G%fIq^D$.Tʳ?D*A, `6B$BB dr`)B(Ͱ*`/@4Qhp.U=pa( Aa!ڈbX#!H$ ɈQ"K5H1RT UH=r9\F;2G1Q= C7F dt1r=6Ыhڏ>C03l0.B8, c˱" VcϱwE 6wB aAHXLXNH $4 7 Q'"K&b21XH,#/{C7$C2'ITFnR#,4H#dk9, +ȅ3![ b@qS(RjJ4e2AURݨT5ZBRQ4u9̓IKhhitݕNWGw Ljg(gwLӋT071oUX**| J&*/Tު UUT^S}FU3S ԖUPSSg;goT?~YYLOCQ_ cx,!k u5&|v*=9C3J3WRf?qtN (~))4L1e\kXHQG6EYAJ'\'GgSSݧ M=:.kDwn^Loy}/TmG X $ <5qo</QC]@Caaᄑ.ȽJtq]zۯ6iܟ4)Y3sCQ? 0k߬~OCOg#/c/Wװwa>>r><72Y_7ȷOo_C#dz%gA[z|!?:eAAA!h쐭!ΑiP~aa~ 'W?pX15wCsDDDޛg1O9-J5*>.j<74?.fYXXIlK9.*6nl {/]py.,:@LN8A*%w% yg"/6шC\*NH*Mz쑼5y$3,幄'L Lݛ:v m2=:1qB!Mggfvˬen/kY- BTZ(*geWf͉9+̳ې7ᒶKW-X潬j9(xoʿܔĹdff-[n ڴ VE/(ۻCɾUUMfeI?m]Nmq#׹=TR+Gw- 6 U#pDy  :v{vg/jBFS[b[O>zG499?rCd&ˮ/~јѡ򗓿m|x31^VwwO| (hSЧc3- cHRMz%u0`:o_F@8N ' p @8N@8}' p '#@8N@8N pQ9p!i~}|6-ӪG` VP.@*j>[ K^<֐Z]@8N'KQ<Q(`s" 'hgpKB`R@Dqj '  'P$a ( `D$Na L?u80e J,K˷NI'0eݷ(NI'؀ 2ipIIKp`:O'`ʤxB8Ѥx Ѥx $ $P6 :vRNb 'p,>NB 'P]-->P T+*^h& p '‰a ‰ (ĵt#u33;Nt̵'ޯ; [3W ~]0KH1q@8]O2]3*̧7# *p>us p _6]/}-4|t'|Smx= DoʾM×M_8!)6lq':l7!|4} '\ne t!=hnLn (~Dn\+‰_4k)0e@OhZ`F `.m1} 'vp{F`ON7Srx 'D˸nV`><;yMx!IS钦OM)Ե٥x 'DSD6bS8!" ODz#R >S8!7ّxEh0m$MIPHi$IvS8IN$I p$O8I,sk&I)$IN$Hi$I^Ah.p$MIN$IR8I·N "IF9Ah0m$MIN$IR8IN$I 3jIU;kO$ɳN$+ q.x* tEXtComment

Viewing File: /usr/include/linux/cxl_mem.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * CXL IOCTLs for Memory Devices
 */

#ifndef _CXL_MEM_H_
#define _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(SET_PARTITION_INFO, "Set Partition Information"),            \
	___C(SET_LSA, "Set Label Storage Area"),                          \
	___C(GET_ALERT_CONFIG, "Get Alert Configuration"),                \
	___C(SET_ALERT_CONFIG, "Set Alert Configuration"),                \
	___C(GET_SHUTDOWN_STATE, "Get Shutdown State"),                   \
	___C(SET_SHUTDOWN_STATE, "Set Shutdown State"),                   \
	___DEPRECATED(GET_POISON, "Get Poison List"),                     \
	___DEPRECATED(INJECT_POISON, "Inject Poison"),                    \
	___DEPRECATED(CLEAR_POISON, "Clear Poison"),                      \
	___C(GET_SCAN_MEDIA_CAPS, "Get Scan Media Capabilities"),         \
	___DEPRECATED(SCAN_MEDIA, "Scan Media"),                          \
	___DEPRECATED(GET_SCAN_MEDIA, "Get Scan Media Results"),          \
	___C(GET_TIMESTAMP, "Get Timestamp"),                             \
	___C(GET_LOG_CAPS, "Get Log Capabilities"),			  \
	___C(CLEAR_LOG, "Clear Log"),					  \
	___C(GET_SUP_LOG_SUBLIST, "Get Supported Logs Sub-List"),	  \
	___C(MAX, "invalid / last command")

#define ___C(a, b) CXL_MEM_COMMAND_ID_##a
#define ___DEPRECATED(a, b) CXL_MEM_DEPRECATED_ID_##a
enum { CXL_CMDS };

#undef ___C
#undef ___DEPRECATED
#define ___C(a, b) { b }
#define ___DEPRECATED(a, b) { "Deprecated " 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
#undef ___DEPRECATED
#define ___C(a, b) (0)
#define ___DEPRECATED(a, b) (1)

static const __u8 cxl_deprecated_commands[]
	__attribute__((__unused__)) = { CXL_CMDS };

/*
 * Here's how this actually breaks out:
 * cxl_deprecated_commands[] = {
 *	[CXL_MEM_COMMAND_ID_INVALID] = 0,
 *	[CXL_MEM_COMMAND_ID_IDENTIFY] = 0,
 *	...
 *	[CXL_MEM_DEPRECATED_ID_GET_POISON] = 1,
 *	[CXL_MEM_DEPRECATED_ID_INJECT_POISON] = 1,
 *	[CXL_MEM_DEPRECATED_ID_CLEAR_POISON] = 1,
 *	...
 * };
 */

#undef ___C
#undef ___DEPRECATED

/**
 * struct cxl_command_info - Command information returned from a query.
 * @id: ID number for the command.
 * @flags: Flags that specify command behavior.
 *
 *         CXL_MEM_COMMAND_FLAG_USER_ENABLED
 *
 *         The given command id is supported by the driver and is supported by
 *         a related opcode on the device.
 *
 *         CXL_MEM_COMMAND_FLAG_EXCLUSIVE
 *
 *         Requests with the given command id will terminate with EBUSY as the
 *         kernel actively owns management of the given resource. For example,
 *         the label-storage-area can not be written while the kernel is
 *         actively managing that space.
 *
 * @size_in: Expected input size, or ~0 if variable length.
 * @size_out: Expected output size, or ~0 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 = CXL_MEM_COMMAND_FLAG_ENABLED
 *  - @size_in = ~0
 *  - @size_out = 0
 *
 * See struct cxl_mem_query_commands.
 */
struct cxl_command_info {
	__u32 id;

	__u32 flags;
#define CXL_MEM_COMMAND_FLAG_MASK		GENMASK(1, 0)
#define CXL_MEM_COMMAND_FLAG_ENABLED		BIT(0)
#define CXL_MEM_COMMAND_FLAG_EXCLUSIVE		BIT(1)

	__u32 size_in;
	__u32 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 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 {
		__u32 size;
		__u32 rsvd;
		__u64 payload;
	} in;

	struct {
		__u32 size;
		__u32 rsvd;
		__u64 payload;
	} out;
};

#endif
Back to Directory=ceiIENDB`