Merge branch 'for-6.5/cxl-type-2' into for-6.5/cxl

Pick up the driver cleanups identified in preparation for CXL "type-2"
(accelerator) device support. The major change here from a conflict
generation perspective is the split of 'struct cxl_memdev_state' from
the core 'struct cxl_dev_state'. Since an accelerator may not care about
all the optional features that are standard on a CXL "type-3" (host-only
memory expander) device.

A silent conflict also occurs with the move of the endpoint port to be a
formal property of a 'struct cxl_memdev' rather than drvdata.

drivers/cxl/acpi.c

···
 
 	cxld = &cxlrd->cxlsd.cxld;
 	cxld->flags = cfmws_to_decoder_flags(cfmws->restrictions);
-	cxld->target_type = CXL_DECODER_EXPANDER;
+	cxld->target_type = CXL_DECODER_HOSTONLYMEM;
 	cxld->hpa_range = (struct range) {
 		.start = res->start,
 		.end = res->end,

drivers/cxl/core/hdm.c

···
 
 static void cxld_set_type(struct cxl_decoder *cxld, u32 *ctrl)
 {
-	u32p_replace_bits(ctrl, !!(cxld->target_type == 3),
-			  CXL_HDM_DECODER0_CTRL_TYPE);
+	u32p_replace_bits(ctrl,
+			  !!(cxld->target_type == CXL_DECODER_HOSTONLYMEM),
+			  CXL_HDM_DECODER0_CTRL_HOSTONLY);
 }
 
 static int cxlsd_set_targets(struct cxl_switch_decoder *cxlsd, u64 *tgt)
···
 	if (!len)
 		return -ENOENT;
 
-	cxld->target_type = CXL_DECODER_EXPANDER;
+	cxld->target_type = CXL_DECODER_HOSTONLYMEM;
 	cxld->commit = NULL;
 	cxld->reset = NULL;
 	cxld->hpa_range = info->dvsec_range[which];
···
 			    int *target_map, void __iomem *hdm, int which,
 			    u64 *dpa_base, struct cxl_endpoint_dvsec_info *info)
 {
+	struct cxl_endpoint_decoder *cxled = NULL;
 	u64 size, base, skip, dpa_size, lo, hi;
-	struct cxl_endpoint_decoder *cxled;
 	bool committed;
 	u32 remainder;
 	int i, rc;
···
 		return -ENXIO;
 	}
 
+	if (info)
+		cxled = to_cxl_endpoint_decoder(&cxld->dev);
 	cxld->hpa_range = (struct range) {
 		.start = base,
 		.end = base + size - 1,
···
 		cxld->flags |= CXL_DECODER_F_ENABLE;
 		if (ctrl & CXL_HDM_DECODER0_CTRL_LOCK)
 			cxld->flags |= CXL_DECODER_F_LOCK;
-		if (FIELD_GET(CXL_HDM_DECODER0_CTRL_TYPE, ctrl))
-			cxld->target_type = CXL_DECODER_EXPANDER;
+		if (FIELD_GET(CXL_HDM_DECODER0_CTRL_HOSTONLY, ctrl))
+			cxld->target_type = CXL_DECODER_HOSTONLYMEM;
 		else
-			cxld->target_type = CXL_DECODER_ACCELERATOR;
+			cxld->target_type = CXL_DECODER_DEVMEM;
 		if (cxld->id != port->commit_end + 1) {
 			dev_warn(&port->dev,
 				 "decoder%d.%d: Committed out of order\n",
···
 		}
 		port->commit_end = cxld->id;
 	} else {
-		/* unless / until type-2 drivers arrive, assume type-3 */
-		if (FIELD_GET(CXL_HDM_DECODER0_CTRL_TYPE, ctrl) == 0) {
-			ctrl |= CXL_HDM_DECODER0_CTRL_TYPE;
+		if (cxled) {
+			struct cxl_memdev *cxlmd = cxled_to_memdev(cxled);
+			struct cxl_dev_state *cxlds = cxlmd->cxlds;
+
+			/*
+			 * Default by devtype until a device arrives that needs
+			 * more precision.
+			 */
+			if (cxlds->type == CXL_DEVTYPE_CLASSMEM)
+				cxld->target_type = CXL_DECODER_HOSTONLYMEM;
+			else
+				cxld->target_type = CXL_DECODER_DEVMEM;
+		} else {
+			/* To be overridden by region type at commit time */
+			cxld->target_type = CXL_DECODER_HOSTONLYMEM;
+		}
+
+		if (!FIELD_GET(CXL_HDM_DECODER0_CTRL_HOSTONLY, ctrl) &&
+		    cxld->target_type == CXL_DECODER_HOSTONLYMEM) {
+			ctrl |= CXL_HDM_DECODER0_CTRL_HOSTONLY;
 			writel(ctrl, hdm + CXL_HDM_DECODER0_CTRL_OFFSET(which));
 		}
-		cxld->target_type = CXL_DECODER_EXPANDER;
 	}
 	rc = eiw_to_ways(FIELD_GET(CXL_HDM_DECODER0_CTRL_IW_MASK, ctrl),
 			  &cxld->interleave_ways);
···
 		port->id, cxld->id, cxld->hpa_range.start, cxld->hpa_range.end,
 		cxld->interleave_ways, cxld->interleave_granularity);
 
-	if (!info) {
+	if (!cxled) {
 		lo = readl(hdm + CXL_HDM_DECODER0_TL_LOW(which));
 		hi = readl(hdm + CXL_HDM_DECODER0_TL_HIGH(which));
 		target_list.value = (hi << 32) + lo;
···
 	lo = readl(hdm + CXL_HDM_DECODER0_SKIP_LOW(which));
 	hi = readl(hdm + CXL_HDM_DECODER0_SKIP_HIGH(which));
 	skip = (hi << 32) + lo;
-	cxled = to_cxl_endpoint_decoder(&cxld->dev);
 	rc = devm_cxl_dpa_reserve(cxled, *dpa_base + skip, dpa_size, skip);
 	if (rc) {
 		dev_err(&port->dev,

drivers/cxl/core/mbox.c

···
 
 /**
  * cxl_internal_send_cmd() - Kernel internal interface to send a mailbox command
- * @cxlds: The device data for the operation
+ * @mds: The driver data for the operation
  * @mbox_cmd: initialized command to execute
  *
  * Context: Any context.
···
  * error. While this distinction can be useful for commands from userspace, the
  * kernel will only be able to use results when both are successful.
  */
-int cxl_internal_send_cmd(struct cxl_dev_state *cxlds,
+int cxl_internal_send_cmd(struct cxl_memdev_state *mds,
 			  struct cxl_mbox_cmd *mbox_cmd)
 {
 	size_t out_size, min_out;
 	int rc;
 
-	if (mbox_cmd->size_in > cxlds->payload_size ||
-	    mbox_cmd->size_out > cxlds->payload_size)
+	if (mbox_cmd->size_in > mds->payload_size ||
+	    mbox_cmd->size_out > mds->payload_size)
 		return -E2BIG;
 
 	out_size = mbox_cmd->size_out;
 	min_out = mbox_cmd->min_out;
-	rc = cxlds->mbox_send(cxlds, mbox_cmd);
+	rc = mds->mbox_send(mds, mbox_cmd);
 	/*
 	 * EIO is reserved for a payload size mismatch and mbox_send()
 	 * may not return this error.
···
 }
 
 static int cxl_mbox_cmd_ctor(struct cxl_mbox_cmd *mbox,
-			     struct cxl_dev_state *cxlds, u16 opcode,
+			     struct cxl_memdev_state *mds, u16 opcode,
 			     size_t in_size, size_t out_size, u64 in_payload)
 {
 	*mbox = (struct cxl_mbox_cmd) {
···
 			return PTR_ERR(mbox->payload_in);
 
 		if (!cxl_payload_from_user_allowed(opcode, mbox->payload_in)) {
-			dev_dbg(cxlds->dev, "%s: input payload not allowed\n",
+			dev_dbg(mds->cxlds.dev, "%s: input payload not allowed\n",
 				cxl_mem_opcode_to_name(opcode));
 			kvfree(mbox->payload_in);
 			return -EBUSY;
···
 
 	/* Prepare to handle a full payload for variable sized output */
 	if (out_size == CXL_VARIABLE_PAYLOAD)
-		mbox->size_out = cxlds->payload_size;
+		mbox->size_out = mds->payload_size;
 	else
 		mbox->size_out = out_size;
 
···
 
 static int cxl_to_mem_cmd_raw(struct cxl_mem_command *mem_cmd,
 			      const struct cxl_send_command *send_cmd,
-			      struct cxl_dev_state *cxlds)
+			      struct cxl_memdev_state *mds)
 {
 	if (send_cmd->raw.rsvd)
 		return -EINVAL;
···
 	 * gets passed along without further checking, so it must be
 	 * validated here.
 	 */
-	if (send_cmd->out.size > cxlds->payload_size)
+	if (send_cmd->out.size > mds->payload_size)
 		return -EINVAL;
 
 	if (!cxl_mem_raw_command_allowed(send_cmd->raw.opcode))
 		return -EPERM;
 
-	dev_WARN_ONCE(cxlds->dev, true, "raw command path used\n");
+	dev_WARN_ONCE(mds->cxlds.dev, true, "raw command path used\n");
 
 	*mem_cmd = (struct cxl_mem_command) {
 		.info = {
···
 
 static int cxl_to_mem_cmd(struct cxl_mem_command *mem_cmd,
 			  const struct cxl_send_command *send_cmd,
-			  struct cxl_dev_state *cxlds)
+			  struct cxl_memdev_state *mds)
 {
 	struct cxl_mem_command *c = &cxl_mem_commands[send_cmd->id];
 	const struct cxl_command_info *info = &c->info;
···
 		return -EINVAL;
 
 	/* Check that the command is enabled for hardware */
-	if (!test_bit(info->id, cxlds->enabled_cmds))
+	if (!test_bit(info->id, mds->enabled_cmds))
 		return -ENOTTY;
 
 	/* Check that the command is not claimed for exclusive kernel use */
-	if (test_bit(info->id, cxlds->exclusive_cmds))
+	if (test_bit(info->id, mds->exclusive_cmds))
 		return -EBUSY;
 
 	/* Check the input buffer is the expected size */
···
 /**
  * cxl_validate_cmd_from_user() - Check fields for CXL_MEM_SEND_COMMAND.
  * @mbox_cmd: Sanitized and populated &struct cxl_mbox_cmd.
- * @cxlds: The device data for the operation
+ * @mds: The driver data for the operation
  * @send_cmd: &struct cxl_send_command copied in from userspace.
  *
  * Return:
···
  * safe to send to the hardware.
  */
 static int cxl_validate_cmd_from_user(struct cxl_mbox_cmd *mbox_cmd,
-				      struct cxl_dev_state *cxlds,
+				      struct cxl_memdev_state *mds,
 				      const struct cxl_send_command *send_cmd)
 {
 	struct cxl_mem_command mem_cmd;
···
 	 * supports, but output can be arbitrarily large (simply write out as
 	 * much data as the hardware provides).
 	 */
-	if (send_cmd->in.size > cxlds->payload_size)
+	if (send_cmd->in.size > mds->payload_size)
 		return -EINVAL;
 
 	/* Sanitize and construct a cxl_mem_command */
 	if (send_cmd->id == CXL_MEM_COMMAND_ID_RAW)
-		rc = cxl_to_mem_cmd_raw(&mem_cmd, send_cmd, cxlds);
+		rc = cxl_to_mem_cmd_raw(&mem_cmd, send_cmd, mds);
 	else
-		rc = cxl_to_mem_cmd(&mem_cmd, send_cmd, cxlds);
+		rc = cxl_to_mem_cmd(&mem_cmd, send_cmd, mds);
 
 	if (rc)
 		return rc;
 
 	/* Sanitize and construct a cxl_mbox_cmd */
-	return cxl_mbox_cmd_ctor(mbox_cmd, cxlds, mem_cmd.opcode,
+	return cxl_mbox_cmd_ctor(mbox_cmd, mds, mem_cmd.opcode,
 				 mem_cmd.info.size_in, mem_cmd.info.size_out,
 				 send_cmd->in.payload);
 }
···
 int cxl_query_cmd(struct cxl_memdev *cxlmd,
 		  struct cxl_mem_query_commands __user *q)
 {
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct device *dev = &cxlmd->dev;
 	struct cxl_mem_command *cmd;
 	u32 n_commands;
···
 	cxl_for_each_cmd(cmd) {
 		struct cxl_command_info info = cmd->info;
 
-		if (test_bit(info.id, cxlmd->cxlds->enabled_cmds))
+		if (test_bit(info.id, mds->enabled_cmds))
 			info.flags |= CXL_MEM_COMMAND_FLAG_ENABLED;
-		if (test_bit(info.id, cxlmd->cxlds->exclusive_cmds))
+		if (test_bit(info.id, mds->exclusive_cmds))
 			info.flags |= CXL_MEM_COMMAND_FLAG_EXCLUSIVE;
 
 		if (copy_to_user(&q->commands[j++], &info, sizeof(info)))
···
 
 /**
  * handle_mailbox_cmd_from_user() - Dispatch a mailbox command for userspace.
- * @cxlds: The device data for the operation
+ * @mds: The driver data for the operation
  * @mbox_cmd: The validated mailbox command.
  * @out_payload: Pointer to userspace's output payload.
  * @size_out: (Input) Max payload size to copy out.
···
  *
  * See cxl_send_cmd().
  */
-static int handle_mailbox_cmd_from_user(struct cxl_dev_state *cxlds,
+static int handle_mailbox_cmd_from_user(struct cxl_memdev_state *mds,
 					struct cxl_mbox_cmd *mbox_cmd,
 					u64 out_payload, s32 *size_out,
 					u32 *retval)
 {
-	struct device *dev = cxlds->dev;
+	struct device *dev = mds->cxlds.dev;
 	int rc;
 
 	dev_dbg(dev,
···
 		cxl_mem_opcode_to_name(mbox_cmd->opcode),
 		mbox_cmd->opcode, mbox_cmd->size_in);
 
-	rc = cxlds->mbox_send(cxlds, mbox_cmd);
+	rc = mds->mbox_send(mds, mbox_cmd);
 	if (rc)
 		goto out;
 
···
 
 int cxl_send_cmd(struct cxl_memdev *cxlmd, struct cxl_send_command __user *s)
 {
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct device *dev = &cxlmd->dev;
 	struct cxl_send_command send;
 	struct cxl_mbox_cmd mbox_cmd;
···
 	if (copy_from_user(&send, s, sizeof(send)))
 		return -EFAULT;
 
-	rc = cxl_validate_cmd_from_user(&mbox_cmd, cxlmd->cxlds, &send);
+	rc = cxl_validate_cmd_from_user(&mbox_cmd, mds, &send);
 	if (rc)
 		return rc;
 
-	rc = handle_mailbox_cmd_from_user(cxlds, &mbox_cmd, send.out.payload,
+	rc = handle_mailbox_cmd_from_user(mds, &mbox_cmd, send.out.payload,
 					  &send.out.size, &send.retval);
 	if (rc)
 		return rc;
···
 	return 0;
 }
 
-static int cxl_xfer_log(struct cxl_dev_state *cxlds, uuid_t *uuid, u32 *size, u8 *out)
+static int cxl_xfer_log(struct cxl_memdev_state *mds, uuid_t *uuid,
+			u32 *size, u8 *out)
 {
 	u32 remaining = *size;
 	u32 offset = 0;
 
 	while (remaining) {
-		u32 xfer_size = min_t(u32, remaining, cxlds->payload_size);
+		u32 xfer_size = min_t(u32, remaining, mds->payload_size);
 		struct cxl_mbox_cmd mbox_cmd;
 		struct cxl_mbox_get_log log;
 		int rc;
···
 			.payload_out = out,
 		};
 
-		rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+		rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 
 		/*
 		 * The output payload length that indicates the number
···
 
 /**
  * cxl_walk_cel() - Walk through the Command Effects Log.
- * @cxlds: The device data for the operation
+ * @mds: The driver data for the operation
  * @size: Length of the Command Effects Log.
  * @cel: CEL
  *
  * Iterate over each entry in the CEL and determine if the driver supports the
  * command. If so, the command is enabled for the device and can be used later.
  */
-static void cxl_walk_cel(struct cxl_dev_state *cxlds, size_t size, u8 *cel)
+static void cxl_walk_cel(struct cxl_memdev_state *mds, size_t size, u8 *cel)
 {
 	struct cxl_cel_entry *cel_entry;
 	const int cel_entries = size / sizeof(*cel_entry);
+	struct device *dev = mds->cxlds.dev;
 	int i;
 
 	cel_entry = (struct cxl_cel_entry *) cel;
···
 		struct cxl_mem_command *cmd = cxl_mem_find_command(opcode);
 
 		if (!cmd && !cxl_is_poison_command(opcode)) {
-			dev_dbg(cxlds->dev,
+			dev_dbg(dev,
 				"Opcode 0x%04x unsupported by driver\n", opcode);
 			continue;
 		}
 
 		if (cmd)
-			set_bit(cmd->info.id, cxlds->enabled_cmds);
+			set_bit(cmd->info.id, mds->enabled_cmds);
 
 		if (cxl_is_poison_command(opcode))
-			cxl_set_poison_cmd_enabled(&cxlds->poison, opcode);
+			cxl_set_poison_cmd_enabled(&mds->poison, opcode);
 
-		dev_dbg(cxlds->dev, "Opcode 0x%04x enabled\n", opcode);
+		dev_dbg(dev, "Opcode 0x%04x enabled\n", opcode);
 	}
 }
 
-static struct cxl_mbox_get_supported_logs *cxl_get_gsl(struct cxl_dev_state *cxlds)
+static struct cxl_mbox_get_supported_logs *cxl_get_gsl(struct cxl_memdev_state *mds)
 {
 	struct cxl_mbox_get_supported_logs *ret;
 	struct cxl_mbox_cmd mbox_cmd;
 	int rc;
 
-	ret = kvmalloc(cxlds->payload_size, GFP_KERNEL);
+	ret = kvmalloc(mds->payload_size, GFP_KERNEL);
 	if (!ret)
 		return ERR_PTR(-ENOMEM);
 
 	mbox_cmd = (struct cxl_mbox_cmd) {
 		.opcode = CXL_MBOX_OP_GET_SUPPORTED_LOGS,
-		.size_out = cxlds->payload_size,
+		.size_out = mds->payload_size,
 		.payload_out = ret,
 		/* At least the record number field must be valid */
 		.min_out = 2,
 	};
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0) {
 		kvfree(ret);
 		return ERR_PTR(rc);
···
 
 /**
  * cxl_enumerate_cmds() - Enumerate commands for a device.
- * @cxlds: The device data for the operation
+ * @mds: The driver data for the operation
  *
  * Returns 0 if enumerate completed successfully.
  *
  * CXL devices have optional support for certain commands. This function will
  * determine the set of supported commands for the hardware and update the
- * enabled_cmds bitmap in the @cxlds.
+ * enabled_cmds bitmap in the @mds.
  */
-int cxl_enumerate_cmds(struct cxl_dev_state *cxlds)
+int cxl_enumerate_cmds(struct cxl_memdev_state *mds)
 {
 	struct cxl_mbox_get_supported_logs *gsl;
-	struct device *dev = cxlds->dev;
+	struct device *dev = mds->cxlds.dev;
 	struct cxl_mem_command *cmd;
 	int i, rc;
 
-	gsl = cxl_get_gsl(cxlds);
+	gsl = cxl_get_gsl(mds);
 	if (IS_ERR(gsl))
 		return PTR_ERR(gsl);
 
···
 			goto out;
 		}
 
-		rc = cxl_xfer_log(cxlds, &uuid, &size, log);
+		rc = cxl_xfer_log(mds, &uuid, &size, log);
 		if (rc) {
 			kvfree(log);
 			goto out;
 		}
 
-		cxl_walk_cel(cxlds, size, log);
+		cxl_walk_cel(mds, size, log);
 		kvfree(log);
 
 		/* In case CEL was bogus, enable some default commands. */
 		cxl_for_each_cmd(cmd)
 			if (cmd->flags & CXL_CMD_FLAG_FORCE_ENABLE)
-				set_bit(cmd->info.id, cxlds->enabled_cmds);
+				set_bit(cmd->info.id, mds->enabled_cmds);
 
 		/* Found the required CEL */
 		rc = 0;
···
 	}
 }
 
-static int cxl_clear_event_record(struct cxl_dev_state *cxlds,
+static int cxl_clear_event_record(struct cxl_memdev_state *mds,
 				  enum cxl_event_log_type log,
 				  struct cxl_get_event_payload *get_pl)
 {
···
 	int i;
 
 	/* Payload size may limit the max handles */
-	if (pl_size > cxlds->payload_size) {
-		max_handles = (cxlds->payload_size - sizeof(*payload)) /
-				sizeof(__le16);
+	if (pl_size > mds->payload_size) {
+		max_handles = (mds->payload_size - sizeof(*payload)) /
+			      sizeof(__le16);
 		pl_size = struct_size(payload, handles, max_handles);
 	}
 
···
 	i = 0;
 	for (cnt = 0; cnt < total; cnt++) {
 		payload->handles[i++] = get_pl->records[cnt].hdr.handle;
-		dev_dbg(cxlds->dev, "Event log '%d': Clearing %u\n",
-			log, le16_to_cpu(payload->handles[i]));
+		dev_dbg(mds->cxlds.dev, "Event log '%d': Clearing %u\n", log,
+			le16_to_cpu(payload->handles[i]));
 
 		if (i == max_handles) {
 			payload->nr_recs = i;
-			rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+			rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 			if (rc)
 				goto free_pl;
 			i = 0;
···
 	if (i) {
 		payload->nr_recs = i;
 		mbox_cmd.size_in = struct_size(payload, handles, i);
-		rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+		rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 		if (rc)
 			goto free_pl;
 	}
···
 	return rc;
 }
 
-static void cxl_mem_get_records_log(struct cxl_dev_state *cxlds,
+static void cxl_mem_get_records_log(struct cxl_memdev_state *mds,
 				    enum cxl_event_log_type type)
 {
+	struct cxl_memdev *cxlmd = mds->cxlds.cxlmd;
+	struct device *dev = mds->cxlds.dev;
 	struct cxl_get_event_payload *payload;
 	struct cxl_mbox_cmd mbox_cmd;
 	u8 log_type = type;
 	u16 nr_rec;
 
-	mutex_lock(&cxlds->event.log_lock);
-	payload = cxlds->event.buf;
+	mutex_lock(&mds->event.log_lock);
+	payload = mds->event.buf;
 
 	mbox_cmd = (struct cxl_mbox_cmd) {
 		.opcode = CXL_MBOX_OP_GET_EVENT_RECORD,
 		.payload_in = &log_type,
 		.size_in = sizeof(log_type),
 		.payload_out = payload,
-		.size_out = cxlds->payload_size,
+		.size_out = mds->payload_size,
 		.min_out = struct_size(payload, records, 0),
 	};
 
 	do {
 		int rc, i;
 
-		rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+		rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 		if (rc) {
-			dev_err_ratelimited(cxlds->dev,
+			dev_err_ratelimited(dev,
 				"Event log '%d': Failed to query event records : %d",
 				type, rc);
 			break;
···
 			break;
 
 		for (i = 0; i < nr_rec; i++)
-			cxl_event_trace_record(cxlds->cxlmd, type,
+			cxl_event_trace_record(cxlmd, type,
 					       &payload->records[i]);
 
 		if (payload->flags & CXL_GET_EVENT_FLAG_OVERFLOW)
-			trace_cxl_overflow(cxlds->cxlmd, type, payload);
+			trace_cxl_overflow(cxlmd, type, payload);
 
-		rc = cxl_clear_event_record(cxlds, type, payload);
+		rc = cxl_clear_event_record(mds, type, payload);
 		if (rc) {
-			dev_err_ratelimited(cxlds->dev,
+			dev_err_ratelimited(dev,
 				"Event log '%d': Failed to clear events : %d",
 				type, rc);
 			break;
 		}
 	} while (nr_rec);
 
-	mutex_unlock(&cxlds->event.log_lock);
+	mutex_unlock(&mds->event.log_lock);
 }
 
 /**
  * cxl_mem_get_event_records - Get Event Records from the device
- * @cxlds: The device data for the operation
+ * @mds: The driver data for the operation
  * @status: Event Status register value identifying which events are available.
  *
  * Retrieve all event records available on the device, report them as trace
···
  * See CXL rev 3.0 @8.2.9.2.2 Get Event Records
  * See CXL rev 3.0 @8.2.9.2.3 Clear Event Records
  */
-void cxl_mem_get_event_records(struct cxl_dev_state *cxlds, u32 status)
+void cxl_mem_get_event_records(struct cxl_memdev_state *mds, u32 status)
 {
-	dev_dbg(cxlds->dev, "Reading event logs: %x\n", status);
+	dev_dbg(mds->cxlds.dev, "Reading event logs: %x\n", status);
 
 	if (status & CXLDEV_EVENT_STATUS_FATAL)
-		cxl_mem_get_records_log(cxlds, CXL_EVENT_TYPE_FATAL);
+		cxl_mem_get_records_log(mds, CXL_EVENT_TYPE_FATAL);
 	if (status & CXLDEV_EVENT_STATUS_FAIL)
-		cxl_mem_get_records_log(cxlds, CXL_EVENT_TYPE_FAIL);
+		cxl_mem_get_records_log(mds, CXL_EVENT_TYPE_FAIL);
 	if (status & CXLDEV_EVENT_STATUS_WARN)
-		cxl_mem_get_records_log(cxlds, CXL_EVENT_TYPE_WARN);
+		cxl_mem_get_records_log(mds, CXL_EVENT_TYPE_WARN);
 	if (status & CXLDEV_EVENT_STATUS_INFO)
-		cxl_mem_get_records_log(cxlds, CXL_EVENT_TYPE_INFO);
+		cxl_mem_get_records_log(mds, CXL_EVENT_TYPE_INFO);
 }
 EXPORT_SYMBOL_NS_GPL(cxl_mem_get_event_records, CXL);
 
 /**
  * cxl_mem_get_partition_info - Get partition info
- * @cxlds: The device data for the operation
+ * @mds: The driver data for the operation
  *
  * Retrieve the current partition info for the device specified.  The active
  * values are the current capacity in bytes.  If not 0, the 'next' values are
···
  *
  * See CXL @8.2.9.5.2.1 Get Partition Info
  */
-static int cxl_mem_get_partition_info(struct cxl_dev_state *cxlds)
+static int cxl_mem_get_partition_info(struct cxl_memdev_state *mds)
 {
 	struct cxl_mbox_get_partition_info pi;
 	struct cxl_mbox_cmd mbox_cmd;
···
 		.size_out = sizeof(pi),
 		.payload_out = &pi,
 	};
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc)
 		return rc;
 
-	cxlds->active_volatile_bytes =
+	mds->active_volatile_bytes =
 		le64_to_cpu(pi.active_volatile_cap) * CXL_CAPACITY_MULTIPLIER;
-	cxlds->active_persistent_bytes =
+	mds->active_persistent_bytes =
 		le64_to_cpu(pi.active_persistent_cap) * CXL_CAPACITY_MULTIPLIER;
-	cxlds->next_volatile_bytes =
+	mds->next_volatile_bytes =
 		le64_to_cpu(pi.next_volatile_cap) * CXL_CAPACITY_MULTIPLIER;
-	cxlds->next_persistent_bytes =
+	mds->next_persistent_bytes =
 		le64_to_cpu(pi.next_volatile_cap) * CXL_CAPACITY_MULTIPLIER;
 
 	return 0;
···
 
 /**
  * cxl_dev_state_identify() - Send the IDENTIFY command to the device.
- * @cxlds: The device data for the operation
+ * @mds: The driver data for the operation
  *
  * Return: 0 if identify was executed successfully or media not ready.
  *
  * This will dispatch the identify command to the device and on success populate
  * structures to be exported to sysfs.
  */
-int cxl_dev_state_identify(struct cxl_dev_state *cxlds)
+int cxl_dev_state_identify(struct cxl_memdev_state *mds)
 {
 	/* See CXL 2.0 Table 175 Identify Memory Device Output Payload */
 	struct cxl_mbox_identify id;
···
 	u32 val;
 	int rc;
 
-	if (!cxlds->media_ready)
+	if (!mds->cxlds.media_ready)
 		return 0;
 
 	mbox_cmd = (struct cxl_mbox_cmd) {
···
 		.size_out = sizeof(id),
 		.payload_out = &id,
 	};
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0)
 		return rc;
 
-	cxlds->total_bytes =
+	mds->total_bytes =
 		le64_to_cpu(id.total_capacity) * CXL_CAPACITY_MULTIPLIER;
-	cxlds->volatile_only_bytes =
+	mds->volatile_only_bytes =
 		le64_to_cpu(id.volatile_capacity) * CXL_CAPACITY_MULTIPLIER;
-	cxlds->persistent_only_bytes =
+	mds->persistent_only_bytes =
 		le64_to_cpu(id.persistent_capacity) * CXL_CAPACITY_MULTIPLIER;
-	cxlds->partition_align_bytes =
+	mds->partition_align_bytes =
 		le64_to_cpu(id.partition_align) * CXL_CAPACITY_MULTIPLIER;
 
-	cxlds->lsa_size = le32_to_cpu(id.lsa_size);
-	memcpy(cxlds->firmware_version, id.fw_revision, sizeof(id.fw_revision));
+	mds->lsa_size = le32_to_cpu(id.lsa_size);
+	memcpy(mds->firmware_version, id.fw_revision,
+	       sizeof(id.fw_revision));
 
-	if (test_bit(CXL_POISON_ENABLED_LIST, cxlds->poison.enabled_cmds)) {
+	if (test_bit(CXL_POISON_ENABLED_LIST, mds->poison.enabled_cmds)) {
 		val = get_unaligned_le24(id.poison_list_max_mer);
-		cxlds->poison.max_errors = min_t(u32, val, CXL_POISON_LIST_MAX);
+		mds->poison.max_errors = min_t(u32, val, CXL_POISON_LIST_MAX);
 	}
 
 	return 0;
···
 
 /**
  * cxl_mem_sanitize() - Send a sanitization command to the device.
- * @cxlds: The device data for the operation
+ * @mds: The device data for the operation
  * @cmd: The specific sanitization command opcode
  *
  * Return: 0 if the command was executed successfully, regardless of
···
  *
  * See CXL 3.0 @8.2.9.8.5.1 Sanitize and @8.2.9.8.5.2 Secure Erase.
  */
-int cxl_mem_sanitize(struct cxl_dev_state *cxlds, u16 cmd)
+int cxl_mem_sanitize(struct cxl_memdev_state *mds, u16 cmd)
 {
 	int rc;
 	u32 sec_out = 0;
···
 		.size_out = sizeof(out),
 	};
 	struct cxl_mbox_cmd mbox_cmd = { .opcode = cmd };
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 
 	if (cmd != CXL_MBOX_OP_SANITIZE && cmd != CXL_MBOX_OP_SECURE_ERASE)
 		return -EINVAL;
 
-	rc = cxl_internal_send_cmd(cxlds, &sec_cmd);
+	rc = cxl_internal_send_cmd(mds, &sec_cmd);
 	if (rc < 0) {
 		dev_err(cxlds->dev, "Failed to get security state : %d", rc);
 		return rc;
···
 	    sec_out & CXL_PMEM_SEC_STATE_LOCKED)
 		return -EINVAL;
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0) {
 		dev_err(cxlds->dev, "Failed to sanitize device : %d", rc);
 		return rc;
···
 	return 0;
 }
 
-int cxl_mem_create_range_info(struct cxl_dev_state *cxlds)
+int cxl_mem_create_range_info(struct cxl_memdev_state *mds)
 {
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 	struct device *dev = cxlds->dev;
 	int rc;
 
···
 	}
 
 	cxlds->dpa_res =
-		(struct resource)DEFINE_RES_MEM(0, cxlds->total_bytes);
+		(struct resource)DEFINE_RES_MEM(0, mds->total_bytes);
 
-	if (cxlds->partition_align_bytes == 0) {
+	if (mds->partition_align_bytes == 0) {
 		rc = add_dpa_res(dev, &cxlds->dpa_res, &cxlds->ram_res, 0,
-				 cxlds->volatile_only_bytes, "ram");
+				 mds->volatile_only_bytes, "ram");
 		if (rc)
 			return rc;
 		return add_dpa_res(dev, &cxlds->dpa_res, &cxlds->pmem_res,
-				   cxlds->volatile_only_bytes,
-				   cxlds->persistent_only_bytes, "pmem");
+				   mds->volatile_only_bytes,
+				   mds->persistent_only_bytes, "pmem");
 	}
 
-	rc = cxl_mem_get_partition_info(cxlds);
+	rc = cxl_mem_get_partition_info(mds);
 	if (rc) {
 		dev_err(dev, "Failed to query partition information\n");
 		return rc;
 	}
 
 	rc = add_dpa_res(dev, &cxlds->dpa_res, &cxlds->ram_res, 0,
-			 cxlds->active_volatile_bytes, "ram");
+			 mds->active_volatile_bytes, "ram");
 	if (rc)
 		return rc;
 	return add_dpa_res(dev, &cxlds->dpa_res, &cxlds->pmem_res,
-			   cxlds->active_volatile_bytes,
-			   cxlds->active_persistent_bytes, "pmem");
+			   mds->active_volatile_bytes,
+			   mds->active_persistent_bytes, "pmem");
 }
 EXPORT_SYMBOL_NS_GPL(cxl_mem_create_range_info, CXL);
 
-int cxl_set_timestamp(struct cxl_dev_state *cxlds)
+int cxl_set_timestamp(struct cxl_memdev_state *mds)
 {
 	struct cxl_mbox_cmd mbox_cmd;
 	struct cxl_mbox_set_timestamp_in pi;
···
 		.payload_in = &pi,
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	/*
 	 * Command is optional. Devices may have another way of providing
 	 * a timestamp, or may return all 0s in timestamp fields.
···
 int cxl_mem_get_poison(struct cxl_memdev *cxlmd, u64 offset, u64 len,
 		       struct cxl_region *cxlr)
 {
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct cxl_mbox_poison_out *po;
 	struct cxl_mbox_poison_in pi;
 	struct cxl_mbox_cmd mbox_cmd;
 	int nr_records = 0;
 	int rc;
 
-	rc = mutex_lock_interruptible(&cxlds->poison.lock);
+	rc = mutex_lock_interruptible(&mds->poison.lock);
 	if (rc)
 		return rc;
 
-	po = cxlds->poison.list_out;
+	po = mds->poison.list_out;
 	pi.offset = cpu_to_le64(offset);
 	pi.length = cpu_to_le64(len / CXL_POISON_LEN_MULT);
 
···
 		.opcode = CXL_MBOX_OP_GET_POISON,
 		.size_in = sizeof(pi),
 		.payload_in = &pi,
-		.size_out = cxlds->payload_size,
+		.size_out = mds->payload_size,
 		.payload_out = po,
 		.min_out = struct_size(po, record, 0),
 	};
 
 	do {
-		rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+		rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 		if (rc)
 			break;
 
···
 
 		/* Protect against an uncleared _FLAG_MORE */
 		nr_records = nr_records + le16_to_cpu(po->count);
-		if (nr_records >= cxlds->poison.max_errors) {
+		if (nr_records >= mds->poison.max_errors) {
 			dev_dbg(&cxlmd->dev, "Max Error Records reached: %d\n",
 				nr_records);
 			break;
 		}
 	} while (po->flags & CXL_POISON_FLAG_MORE);
 
-	mutex_unlock(&cxlds->poison.lock);
+	mutex_unlock(&mds->poison.lock);
 	return rc;
 }
 EXPORT_SYMBOL_NS_GPL(cxl_mem_get_poison, CXL);
···
 	kvfree(buf);
 }
 
-/* Get Poison List output buffer is protected by cxlds->poison.lock */
-static int cxl_poison_alloc_buf(struct cxl_dev_state *cxlds)
+/* Get Poison List output buffer is protected by mds->poison.lock */
+static int cxl_poison_alloc_buf(struct cxl_memdev_state *mds)
 {
-	cxlds->poison.list_out = kvmalloc(cxlds->payload_size, GFP_KERNEL);
-	if (!cxlds->poison.list_out)
+	mds->poison.list_out = kvmalloc(mds->payload_size, GFP_KERNEL);
+	if (!mds->poison.list_out)
 		return -ENOMEM;
 
-	return devm_add_action_or_reset(cxlds->dev, free_poison_buf,
-					cxlds->poison.list_out);
+	return devm_add_action_or_reset(mds->cxlds.dev, free_poison_buf,
+					mds->poison.list_out);
 }
 
-int cxl_poison_state_init(struct cxl_dev_state *cxlds)
+int cxl_poison_state_init(struct cxl_memdev_state *mds)
 {
 	int rc;
 
-	if (!test_bit(CXL_POISON_ENABLED_LIST, cxlds->poison.enabled_cmds))
+	if (!test_bit(CXL_POISON_ENABLED_LIST, mds->poison.enabled_cmds))
 		return 0;
 
-	rc = cxl_poison_alloc_buf(cxlds);
+	rc = cxl_poison_alloc_buf(mds);
 	if (rc) {
-		clear_bit(CXL_POISON_ENABLED_LIST, cxlds->poison.enabled_cmds);
+		clear_bit(CXL_POISON_ENABLED_LIST, mds->poison.enabled_cmds);
 		return rc;
 	}
 
-	mutex_init(&cxlds->poison.lock);
+	mutex_init(&mds->poison.lock);
 	return 0;
 }
 EXPORT_SYMBOL_NS_GPL(cxl_poison_state_init, CXL);
 
-struct cxl_dev_state *cxl_dev_state_create(struct device *dev)
+struct cxl_memdev_state *cxl_memdev_state_create(struct device *dev)
 {
-	struct cxl_dev_state *cxlds;
+	struct cxl_memdev_state *mds;
 
-	cxlds = devm_kzalloc(dev, sizeof(*cxlds), GFP_KERNEL);
-	if (!cxlds) {
+	mds = devm_kzalloc(dev, sizeof(*mds), GFP_KERNEL);
+	if (!mds) {
 		dev_err(dev, "No memory available\n");
 		return ERR_PTR(-ENOMEM);
 	}
 
-	mutex_init(&cxlds->mbox_mutex);
-	mutex_init(&cxlds->event.log_lock);
-	cxlds->dev = dev;
+	mutex_init(&mds->mbox_mutex);
+	mutex_init(&mds->event.log_lock);
+	mds->cxlds.dev = dev;
+	mds->cxlds.type = CXL_DEVTYPE_CLASSMEM;
 
-	return cxlds;
+	return mds;
 }
-EXPORT_SYMBOL_NS_GPL(cxl_dev_state_create, CXL);
+EXPORT_SYMBOL_NS_GPL(cxl_memdev_state_create, CXL);
 
 void __init cxl_mbox_init(void)
 {

drivers/cxl/core/memdev.c

···
 {
 	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
 	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlds);
 
-	return sysfs_emit(buf, "%.16s\n", cxlds->firmware_version);
+	if (!mds)
+		return sysfs_emit(buf, "\n");
+	return sysfs_emit(buf, "%.16s\n", mds->firmware_version);
 }
 static DEVICE_ATTR_RO(firmware_version);
 
···
 {
 	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
 	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlds);
 
-	return sysfs_emit(buf, "%zu\n", cxlds->payload_size);
+	if (!mds)
+		return sysfs_emit(buf, "\n");
+	return sysfs_emit(buf, "%zu\n", mds->payload_size);
 }
 static DEVICE_ATTR_RO(payload_max);
 
···
 {
 	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
 	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlds);
 
-	return sysfs_emit(buf, "%zu\n", cxlds->lsa_size);
+	if (!mds)
+		return sysfs_emit(buf, "\n");
+	return sysfs_emit(buf, "%zu\n", mds->lsa_size);
 }
 static DEVICE_ATTR_RO(label_storage_size);
 
···
 {
 	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
 	struct cxl_dev_state *cxlds = cxlmd->cxlds;
-	unsigned long state = cxlds->security.state;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlds);
 	u64 reg = readq(cxlds->regs.mbox + CXLDEV_MBOX_BG_CMD_STATUS_OFFSET);
 	u32 pct = FIELD_GET(CXLDEV_MBOX_BG_CMD_COMMAND_PCT_MASK, reg);
 	u16 cmd = FIELD_GET(CXLDEV_MBOX_BG_CMD_COMMAND_OPCODE_MASK, reg);
+	unsigned long state = mds->security.state;
 
 	if (cmd == CXL_MBOX_OP_SANITIZE && pct != 100)
 		return sysfs_emit(buf, "sanitize\n");
···
 				       const char *buf, size_t len)
 {
 	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
-	struct cxl_port *port = dev_get_drvdata(&cxlmd->dev);
-	ssize_t rc;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
+	struct cxl_port *port = cxlmd->endpoint;
 	bool sanitize;
+	ssize_t rc;
 
 	if (kstrtobool(buf, &sanitize) || !sanitize)
 		return -EINVAL;
···
 	if (port->commit_end != -1)
 		return -EBUSY;
 
-	rc = cxl_mem_sanitize(cxlds, CXL_MBOX_OP_SANITIZE);
+	rc = cxl_mem_sanitize(mds, CXL_MBOX_OP_SANITIZE);
 
 	return rc ? rc : len;
 }
···
 				    const char *buf, size_t len)
 {
 	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
-	struct cxl_port *port = dev_get_drvdata(&cxlmd->dev);
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
+	struct cxl_port *port = cxlmd->endpoint;
 	ssize_t rc;
 	bool erase;
 
···
 	if (port->commit_end != -1)
 		return -EBUSY;
 
-	rc = cxl_mem_sanitize(cxlds, CXL_MBOX_OP_SECURE_ERASE);
+	rc = cxl_mem_sanitize(mds, CXL_MBOX_OP_SECURE_ERASE);
 
 	return rc ? rc : len;
 }
···
 	struct cxl_port *port;
 	int rc;
 
-	port = dev_get_drvdata(&cxlmd->dev);
+	port = cxlmd->endpoint;
 	if (!port || !is_cxl_endpoint(port))
 		return -EINVAL;
 
···
 	ctx = (struct cxl_dpa_to_region_context) {
 		.dpa = dpa,
 	};
-	port = dev_get_drvdata(&cxlmd->dev);
+	port = cxlmd->endpoint;
 	if (port && is_cxl_endpoint(port) && port->commit_end != -1)
 		device_for_each_child(&port->dev, &ctx, __cxl_dpa_to_region);
 
···
 
 int cxl_inject_poison(struct cxl_memdev *cxlmd, u64 dpa)
 {
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct cxl_mbox_inject_poison inject;
 	struct cxl_poison_record record;
 	struct cxl_mbox_cmd mbox_cmd;
···
 		.size_in = sizeof(inject),
 		.payload_in = &inject,
 	};
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc)
 		goto out;
 
 	cxlr = cxl_dpa_to_region(cxlmd, dpa);
 	if (cxlr)
-		dev_warn_once(cxlds->dev,
+		dev_warn_once(mds->cxlds.dev,
 			      "poison inject dpa:%#llx region: %s\n", dpa,
 			      dev_name(&cxlr->dev));
 
···
 
 int cxl_clear_poison(struct cxl_memdev *cxlmd, u64 dpa)
 {
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct cxl_mbox_clear_poison clear;
 	struct cxl_poison_record record;
 	struct cxl_mbox_cmd mbox_cmd;
···
 		.payload_in = &clear,
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc)
 		goto out;
 
 	cxlr = cxl_dpa_to_region(cxlmd, dpa);
 	if (cxlr)
-		dev_warn_once(cxlds->dev, "poison clear dpa:%#llx region: %s\n",
-			      dpa, dev_name(&cxlr->dev));
+		dev_warn_once(mds->cxlds.dev,
+			      "poison clear dpa:%#llx region: %s\n", dpa,
+			      dev_name(&cxlr->dev));
 
 	record = (struct cxl_poison_record) {
 		.address = cpu_to_le64(dpa),
···
 
 /**
  * set_exclusive_cxl_commands() - atomically disable user cxl commands
- * @cxlds: The device state to operate on
+ * @mds: The device state to operate on
  * @cmds: bitmap of commands to mark exclusive
  *
  * Grab the cxl_memdev_rwsem in write mode to flush in-flight
  * invocations of the ioctl path and then disable future execution of
  * commands with the command ids set in @cmds.
  */
-void set_exclusive_cxl_commands(struct cxl_dev_state *cxlds, unsigned long *cmds)
+void set_exclusive_cxl_commands(struct cxl_memdev_state *mds,
+				unsigned long *cmds)
 {
 	down_write(&cxl_memdev_rwsem);
-	bitmap_or(cxlds->exclusive_cmds, cxlds->exclusive_cmds, cmds,
+	bitmap_or(mds->exclusive_cmds, mds->exclusive_cmds, cmds,
 		  CXL_MEM_COMMAND_ID_MAX);
 	up_write(&cxl_memdev_rwsem);
 }
···
 
 /**
  * clear_exclusive_cxl_commands() - atomically enable user cxl commands
- * @cxlds: The device state to modify
+ * @mds: The device state to modify
  * @cmds: bitmap of commands to mark available for userspace
  */
-void clear_exclusive_cxl_commands(struct cxl_dev_state *cxlds, unsigned long *cmds)
+void clear_exclusive_cxl_commands(struct cxl_memdev_state *mds,
+				  unsigned long *cmds)
 {
 	down_write(&cxl_memdev_rwsem);
-	bitmap_andnot(cxlds->exclusive_cmds, cxlds->exclusive_cmds, cmds,
+	bitmap_andnot(mds->exclusive_cmds, mds->exclusive_cmds, cmds,
 		      CXL_MEM_COMMAND_ID_MAX);
 	up_write(&cxl_memdev_rwsem);
 }
···
 static void cxl_memdev_security_shutdown(struct device *dev)
 {
 	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 
-	if (cxlds->security.poll)
-		cancel_delayed_work_sync(&cxlds->security.poll_dwork);
+	if (mds->security.poll)
+		cancel_delayed_work_sync(&mds->security.poll_dwork);
 }
 
 static void cxl_memdev_shutdown(struct device *dev)
···
 			     unsigned long arg)
 {
 	struct cxl_memdev *cxlmd = file->private_data;
+	struct cxl_dev_state *cxlds;
 	int rc = -ENXIO;
 
 	down_read(&cxl_memdev_rwsem);
-	if (cxlmd->cxlds)
+	cxlds = cxlmd->cxlds;
+	if (cxlds && cxlds->type == CXL_DEVTYPE_CLASSMEM)
 		rc = __cxl_memdev_ioctl(cxlmd, cmd, arg);
 	up_read(&cxl_memdev_rwsem);
 
···
  *
  * See CXL-3.0 8.2.9.3.1 Get FW Info
  */
-static int cxl_mem_get_fw_info(struct cxl_dev_state *cxlds)
+static int cxl_mem_get_fw_info(struct cxl_memdev_state *mds)
 {
 	struct cxl_mbox_get_fw_info info;
 	struct cxl_mbox_cmd mbox_cmd;
···
 		.payload_out = &info,
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0)
 		return rc;
 
-	cxlds->fw.num_slots = info.num_slots;
-	cxlds->fw.cur_slot = FIELD_GET(CXL_FW_INFO_SLOT_INFO_CUR_MASK,
+	mds->fw.num_slots = info.num_slots;
+	mds->fw.cur_slot = FIELD_GET(CXL_FW_INFO_SLOT_INFO_CUR_MASK,
 				       info.slot_info);
 
 	return 0;
···
 
 /**
  * cxl_mem_activate_fw - Activate Firmware
- * @cxlds: The device data for the operation
+ * @mds: The device data for the operation
  * @slot: slot number to activate
  *
  * Activate firmware in a given slot for the device specified.
···
  *
  * See CXL-3.0 8.2.9.3.3 Activate FW
  */
-static int cxl_mem_activate_fw(struct cxl_dev_state *cxlds, int slot)
+static int cxl_mem_activate_fw(struct cxl_memdev_state *mds, int slot)
 {
 	struct cxl_mbox_activate_fw activate;
 	struct cxl_mbox_cmd mbox_cmd;
 
-	if (slot == 0 || slot > cxlds->fw.num_slots)
+	if (slot == 0 || slot > mds->fw.num_slots)
 		return -EINVAL;
 
 	mbox_cmd = (struct cxl_mbox_cmd) {
···
 	activate.action = CXL_FW_ACTIVATE_OFFLINE;
 	activate.slot = slot;
 
-	return cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	return cxl_internal_send_cmd(mds, &mbox_cmd);
 }
 
 /**
  * cxl_mem_abort_fw_xfer - Abort an in-progress FW transfer
- * @cxlds: The device data for the operation
+ * @mds: The device data for the operation
  *
  * Abort an in-progress firmware transfer for the device specified.
  *
···
  *
  * See CXL-3.0 8.2.9.3.2 Transfer FW
  */
-static int cxl_mem_abort_fw_xfer(struct cxl_dev_state *cxlds)
+static int cxl_mem_abort_fw_xfer(struct cxl_memdev_state *mds)
 {
 	struct cxl_mbox_transfer_fw *transfer;
 	struct cxl_mbox_cmd mbox_cmd;
···
 
 	transfer->action = CXL_FW_TRANSFER_ACTION_ABORT;
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	kfree(transfer);
 	return rc;
 }
 
 static void cxl_fw_cleanup(struct fw_upload *fwl)
 {
-	struct cxl_dev_state *cxlds = fwl->dd_handle;
+	struct cxl_memdev_state *mds = fwl->dd_handle;
 
-	cxlds->fw.next_slot = 0;
+	mds->fw.next_slot = 0;
 }
 
 static int cxl_fw_do_cancel(struct fw_upload *fwl)
 {
-	struct cxl_dev_state *cxlds = fwl->dd_handle;
+	struct cxl_memdev_state *mds = fwl->dd_handle;
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 	struct cxl_memdev *cxlmd = cxlds->cxlmd;
 	int rc;
 
-	rc = cxl_mem_abort_fw_xfer(cxlds);
+	rc = cxl_mem_abort_fw_xfer(mds);
 	if (rc < 0)
 		dev_err(&cxlmd->dev, "Error aborting FW transfer: %d\n", rc);
 
···
 static enum fw_upload_err cxl_fw_prepare(struct fw_upload *fwl, const u8 *data,
 					 u32 size)
 {
-	struct cxl_dev_state *cxlds = fwl->dd_handle;
+	struct cxl_memdev_state *mds = fwl->dd_handle;
 	struct cxl_mbox_transfer_fw *transfer;
 
 	if (!size)
 		return FW_UPLOAD_ERR_INVALID_SIZE;
 
-	cxlds->fw.oneshot = struct_size(transfer, data, size) <
-			    cxlds->payload_size;
+	mds->fw.oneshot = struct_size(transfer, data, size) <
+			    mds->payload_size;
 
-	if (cxl_mem_get_fw_info(cxlds))
+	if (cxl_mem_get_fw_info(mds))
 		return FW_UPLOAD_ERR_HW_ERROR;
 
 	/*
 	 * So far no state has been changed, hence no other cleanup is
 	 * necessary. Simply return the cancelled status.
 	 */
-	if (test_and_clear_bit(CXL_FW_CANCEL, cxlds->fw.state))
+	if (test_and_clear_bit(CXL_FW_CANCEL, mds->fw.state))
 		return FW_UPLOAD_ERR_CANCELED;
 
 	return FW_UPLOAD_ERR_NONE;
···
 static enum fw_upload_err cxl_fw_write(struct fw_upload *fwl, const u8 *data,
 				       u32 offset, u32 size, u32 *written)
 {
-	struct cxl_dev_state *cxlds = fwl->dd_handle;
+	struct cxl_memdev_state *mds = fwl->dd_handle;
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 	struct cxl_memdev *cxlmd = cxlds->cxlmd;
 	struct cxl_mbox_transfer_fw *transfer;
 	struct cxl_mbox_cmd mbox_cmd;
···
 	}
 
 	/*
-	 * Pick transfer size based on cxlds->payload_size
-	 * @size must bw 128-byte aligned, ->payload_size is a power of 2
-	 * starting at 256 bytes, and sizeof(*transfer) is 128.
-	 * These constraints imply that @cur_size will always be 128b aligned.
+	 * Pick transfer size based on mds->payload_size @size must bw 128-byte
+	 * aligned, ->payload_size is a power of 2 starting at 256 bytes, and
+	 * sizeof(*transfer) is 128.  These constraints imply that @cur_size
+	 * will always be 128b aligned.
 	 */
-	cur_size = min_t(size_t, size, cxlds->payload_size - sizeof(*transfer));
+	cur_size = min_t(size_t, size, mds->payload_size - sizeof(*transfer));
 
 	remaining = size - cur_size;
 	size_in = struct_size(transfer, data, cur_size);
 
-	if (test_and_clear_bit(CXL_FW_CANCEL, cxlds->fw.state))
+	if (test_and_clear_bit(CXL_FW_CANCEL, mds->fw.state))
 		return cxl_fw_do_cancel(fwl);
 
 	/*
···
 	 * cur_slot is the 0-indexed next_slot (i.e. 'cur_slot - 1 + 1')
 	 * Check for rollover using modulo, and 1-index it by adding 1
 	 */
-	cxlds->fw.next_slot = (cxlds->fw.cur_slot % cxlds->fw.num_slots) + 1;
+	mds->fw.next_slot = (mds->fw.cur_slot % mds->fw.num_slots) + 1;
 
 	/* Do the transfer via mailbox cmd */
 	transfer = kzalloc(size_in, GFP_KERNEL);
···
 
 	transfer->offset = cpu_to_le32(offset / CXL_FW_TRANSFER_ALIGNMENT);
 	memcpy(transfer->data, data + offset, cur_size);
-	if (cxlds->fw.oneshot) {
+	if (mds->fw.oneshot) {
 		transfer->action = CXL_FW_TRANSFER_ACTION_FULL;
-		transfer->slot = cxlds->fw.next_slot;
+		transfer->slot = mds->fw.next_slot;
 	} else {
 		if (offset == 0) {
 			transfer->action = CXL_FW_TRANSFER_ACTION_INITIATE;
 		} else if (remaining == 0) {
 			transfer->action = CXL_FW_TRANSFER_ACTION_END;
-			transfer->slot = cxlds->fw.next_slot;
+			transfer->slot = mds->fw.next_slot;
 		} else {
 			transfer->action = CXL_FW_TRANSFER_ACTION_CONTINUE;
 		}
···
 		.poll_count = 30,
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0) {
 		rc = FW_UPLOAD_ERR_RW_ERROR;
 		goto out_free;
···
 	*written = cur_size;
 
 	/* Activate FW if oneshot or if the last slice was written */
-	if (cxlds->fw.oneshot || remaining == 0) {
+	if (mds->fw.oneshot || remaining == 0) {
 		dev_dbg(&cxlmd->dev, "Activating firmware slot: %d\n",
-			cxlds->fw.next_slot);
-		rc = cxl_mem_activate_fw(cxlds, cxlds->fw.next_slot);
+			mds->fw.next_slot);
+		rc = cxl_mem_activate_fw(mds, mds->fw.next_slot);
 		if (rc < 0) {
 			dev_err(&cxlmd->dev, "Error activating firmware: %d\n",
 				rc);
···
 
 static enum fw_upload_err cxl_fw_poll_complete(struct fw_upload *fwl)
 {
-	struct cxl_dev_state *cxlds = fwl->dd_handle;
+	struct cxl_memdev_state *mds = fwl->dd_handle;
 
 	/*
 	 * cxl_internal_send_cmd() handles background operations synchronously.
···
 	 * reported and handled during the ->write() call(s).
 	 * Just check if a cancel request was received, and return success.
 	 */
-	if (test_and_clear_bit(CXL_FW_CANCEL, cxlds->fw.state))
+	if (test_and_clear_bit(CXL_FW_CANCEL, mds->fw.state))
 		return cxl_fw_do_cancel(fwl);
 
 	return FW_UPLOAD_ERR_NONE;
···
 
 static void cxl_fw_cancel(struct fw_upload *fwl)
 {
-	struct cxl_dev_state *cxlds = fwl->dd_handle;
+	struct cxl_memdev_state *mds = fwl->dd_handle;
 
-	set_bit(CXL_FW_CANCEL, cxlds->fw.state);
+	set_bit(CXL_FW_CANCEL, mds->fw.state);
 }
 
 static const struct fw_upload_ops cxl_memdev_fw_ops = {
···
 	firmware_upload_unregister(fwl);
 }
 
-int cxl_memdev_setup_fw_upload(struct cxl_dev_state *cxlds)
+int cxl_memdev_setup_fw_upload(struct cxl_memdev_state *mds)
 {
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 	struct device *dev = &cxlds->cxlmd->dev;
 	struct fw_upload *fwl;
 	int rc;
 
-	if (!test_bit(CXL_MEM_COMMAND_ID_GET_FW_INFO, cxlds->enabled_cmds))
+	if (!test_bit(CXL_MEM_COMMAND_ID_GET_FW_INFO, mds->enabled_cmds))
 		return 0;
 
 	fwl = firmware_upload_register(THIS_MODULE, dev, dev_name(dev),
-				       &cxl_memdev_fw_ops, cxlds);
+				       &cxl_memdev_fw_ops, mds);
 	if (IS_ERR(fwl))
 		return dev_err_probe(dev, PTR_ERR(fwl),
 				     "Failed to register firmware loader\n");
···
 
 static void put_sanitize(void *data)
 {
-	struct cxl_dev_state *cxlds = data;
+	struct cxl_memdev_state *mds = data;
 
-	sysfs_put(cxlds->security.sanitize_node);
+	sysfs_put(mds->security.sanitize_node);
 }
 
 static int cxl_memdev_security_init(struct cxl_memdev *cxlmd)
 {
 	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlds);
 	struct device *dev = &cxlmd->dev;
 	struct kernfs_node *sec;
 
···
 		dev_err(dev, "sysfs_get_dirent 'security' failed\n");
 		return -ENODEV;
 	}
-	cxlds->security.sanitize_node = sysfs_get_dirent(sec, "state");
+	mds->security.sanitize_node = sysfs_get_dirent(sec, "state");
 	sysfs_put(sec);
-	if (!cxlds->security.sanitize_node) {
+	if (!mds->security.sanitize_node) {
 		dev_err(dev, "sysfs_get_dirent 'state' failed\n");
 		return -ENODEV;
 	}
 
-	return devm_add_action_or_reset(cxlds->dev, put_sanitize, cxlds);
+	return devm_add_action_or_reset(cxlds->dev, put_sanitize, mds);
  }
 
 struct cxl_memdev *devm_cxl_add_memdev(struct cxl_dev_state *cxlds)

drivers/cxl/core/pci.c

···
 	       hdm + CXL_HDM_DECODER_CTRL_OFFSET);
 }
 
-int devm_cxl_enable_hdm(struct cxl_port *port, struct cxl_hdm *cxlhdm)
+static int devm_cxl_enable_hdm(struct device *host, struct cxl_hdm *cxlhdm)
 {
-	void __iomem *hdm;
+	void __iomem *hdm = cxlhdm->regs.hdm_decoder;
 	u32 global_ctrl;
 
-	/*
-	 * If the hdm capability was not mapped there is nothing to enable and
-	 * the caller is responsible for what happens next.  For example,
-	 * emulate a passthrough decoder.
-	 */
-	if (IS_ERR(cxlhdm))
-		return 0;
-
-	hdm = cxlhdm->regs.hdm_decoder;
 	global_ctrl = readl(hdm + CXL_HDM_DECODER_CTRL_OFFSET);
-
-	/*
-	 * If the HDM decoder capability was enabled on entry, skip
-	 * registering disable_hdm() since this decode capability may be
-	 * owned by platform firmware.
-	 */
-	if (global_ctrl & CXL_HDM_DECODER_ENABLE)
-		return 0;
-
 	writel(global_ctrl | CXL_HDM_DECODER_ENABLE,
 	       hdm + CXL_HDM_DECODER_CTRL_OFFSET);
 
-	return devm_add_action_or_reset(&port->dev, disable_hdm, cxlhdm);
+	return devm_add_action_or_reset(host, disable_hdm, cxlhdm);
 }
-EXPORT_SYMBOL_NS_GPL(devm_cxl_enable_hdm, CXL);
 
 int cxl_dvsec_rr_decode(struct device *dev, int d,
 			struct cxl_endpoint_dvsec_info *info)
···
 	if (info->mem_enabled)
 		return 0;
 
-	rc = devm_cxl_enable_hdm(port, cxlhdm);
+	rc = devm_cxl_enable_hdm(&port->dev, cxlhdm);
 	if (rc)
 		return rc;
 

drivers/cxl/core/pmem.c

···
 
 struct cxl_nvdimm_bridge *cxl_find_nvdimm_bridge(struct cxl_memdev *cxlmd)
 {
-	struct cxl_port *port = find_cxl_root(dev_get_drvdata(&cxlmd->dev));
+	struct cxl_port *port = find_cxl_root(cxlmd->endpoint);
 	struct device *dev;
 
 	if (!port)

drivers/cxl/core/port.c

···
 	struct cxl_decoder *cxld = to_cxl_decoder(dev);
 
 	switch (cxld->target_type) {
-	case CXL_DECODER_ACCELERATOR:
+	case CXL_DECODER_DEVMEM:
 		return sysfs_emit(buf, "accelerator\n");
-	case CXL_DECODER_EXPANDER:
+	case CXL_DECODER_HOSTONLYMEM:
 		return sysfs_emit(buf, "expander\n");
 	}
 	return -ENXIO;
···
 static void delete_endpoint(void *data)
 {
 	struct cxl_memdev *cxlmd = data;
-	struct cxl_port *endpoint = dev_get_drvdata(&cxlmd->dev);
+	struct cxl_port *endpoint = cxlmd->endpoint;
 	struct cxl_port *parent_port;
 	struct device *parent;
 
···
 		devm_release_action(parent, cxl_unlink_uport, endpoint);
 		devm_release_action(parent, unregister_port, endpoint);
 	}
+	cxlmd->endpoint = NULL;
 	device_unlock(parent);
 	put_device(parent);
 out:
···
 	struct device *dev = &cxlmd->dev;
 
 	get_device(&endpoint->dev);
-	dev_set_drvdata(dev, endpoint);
+	cxlmd->endpoint = endpoint;
 	cxlmd->depth = endpoint->depth;
 	return devm_add_action_or_reset(dev, delete_endpoint, cxlmd);
 }
···
 	/* Pre initialize an "empty" decoder */
 	cxld->interleave_ways = 1;
 	cxld->interleave_granularity = PAGE_SIZE;
-	cxld->target_type = CXL_DECODER_EXPANDER;
+	cxld->target_type = CXL_DECODER_HOSTONLYMEM;
 	cxld->hpa_range = (struct range) {
 		.start = 0,
 		.end = -1,

drivers/cxl/core/region.c

···
 		return -EBUSY;
 	}
 
+	/*
+	 * Endpoints should already match the region type, but backstop that
+	 * assumption with an assertion. Switch-decoders change mapping-type
+	 * based on what is mapped when they are assigned to a region.
+	 */
+	dev_WARN_ONCE(&cxlr->dev,
+		      port == cxled_to_port(cxled) &&
+			      cxld->target_type != cxlr->type,
+		      "%s:%s mismatch decoder type %d -> %d\n",
+		      dev_name(&cxled_to_memdev(cxled)->dev),
+		      dev_name(&cxld->dev), cxld->target_type, cxlr->type);
+	cxld->target_type = cxlr->type;
 	cxl_rr->decoder = cxld;
 	return 0;
 }
···
 		return ERR_PTR(-EBUSY);
 	}
 
-	return devm_cxl_add_region(cxlrd, id, mode, CXL_DECODER_EXPANDER);
+	return devm_cxl_add_region(cxlrd, id, mode, CXL_DECODER_HOSTONLYMEM);
 }
 
 static ssize_t create_pmem_region_store(struct device *dev,

drivers/cxl/core/regs.c

···
 }
 
 int cxl_map_component_regs(struct device *dev, struct cxl_component_regs *regs,
-			   struct cxl_register_map *map, unsigned long map_mask)
+			   const struct cxl_register_map *map, unsigned long map_mask)
 {
 	struct mapinfo {
-		struct cxl_reg_map *rmap;
+		const struct cxl_reg_map *rmap;
 		void __iomem **addr;
 	} mapinfo[] = {
 		{ &map->component_map.hdm_decoder, &regs->hdm_decoder },
···
 
 int cxl_map_device_regs(struct device *dev,
 			struct cxl_device_regs *regs,
-			struct cxl_register_map *map)
+			const struct cxl_register_map *map)
 {
 	resource_size_t phys_addr = map->resource;
 	struct mapinfo {
-		struct cxl_reg_map *rmap;
+		const struct cxl_reg_map *rmap;
 		void __iomem **addr;
 	} mapinfo[] = {
 		{ &map->device_map.status, &regs->status, },

drivers/cxl/cxl.h

···
 #define   CXL_HDM_DECODER0_CTRL_COMMIT BIT(9)
 #define   CXL_HDM_DECODER0_CTRL_COMMITTED BIT(10)
 #define   CXL_HDM_DECODER0_CTRL_COMMIT_ERROR BIT(11)
-#define   CXL_HDM_DECODER0_CTRL_TYPE BIT(12)
+#define   CXL_HDM_DECODER0_CTRL_HOSTONLY BIT(12)
 #define CXL_HDM_DECODER0_TL_LOW(i) (0x20 * (i) + 0x24)
 #define CXL_HDM_DECODER0_TL_HIGH(i) (0x20 * (i) + 0x28)
 #define CXL_HDM_DECODER0_SKIP_LOW(i) CXL_HDM_DECODER0_TL_LOW(i)
···
 void cxl_probe_device_regs(struct device *dev, void __iomem *base,
 			   struct cxl_device_reg_map *map);
 int cxl_map_component_regs(struct device *dev, struct cxl_component_regs *regs,
-			   struct cxl_register_map *map,
+			   const struct cxl_register_map *map,
 			   unsigned long map_mask);
 int cxl_map_device_regs(struct device *dev, struct cxl_device_regs *regs,
-			struct cxl_register_map *map);
+			const struct cxl_register_map *map);
 
 enum cxl_regloc_type;
 int cxl_find_regblock(struct pci_dev *pdev, enum cxl_regloc_type type,
···
 #define CXL_DECODER_F_MASK  GENMASK(5, 0)
 
 enum cxl_decoder_type {
-       CXL_DECODER_ACCELERATOR = 2,
-       CXL_DECODER_EXPANDER = 3,
+	CXL_DECODER_DEVMEM = 2,
+	CXL_DECODER_HOSTONLYMEM = 3,
 };
 
 /*
···
 struct cxl_hdm;
 struct cxl_hdm *devm_cxl_setup_hdm(struct cxl_port *port,
 				   struct cxl_endpoint_dvsec_info *info);
-int devm_cxl_enable_hdm(struct cxl_port *port, struct cxl_hdm *cxlhdm);
 int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm,
 				struct cxl_endpoint_dvsec_info *info);
 int devm_cxl_add_passthrough_decoder(struct cxl_port *port);

drivers/cxl/cxlmem.h

···
  * @detach_work: active memdev lost a port in its ancestry
  * @cxl_nvb: coordinate removal of @cxl_nvd if present
  * @cxl_nvd: optional bridge to an nvdimm if the device supports pmem
+ * @endpoint: connection to the CXL port topology for this memory device
  * @id: id number of this memdev instance.
  * @depth: endpoint port depth
  */
···
 	struct work_struct detach_work;
 	struct cxl_nvdimm_bridge *cxl_nvb;
 	struct cxl_nvdimm *cxl_nvd;
+	struct cxl_port *endpoint;
 	int id;
 	int depth;
 };
···
 }
 
 struct cxl_memdev *devm_cxl_add_memdev(struct cxl_dev_state *cxlds);
-int cxl_memdev_setup_fw_upload(struct cxl_dev_state *cxlds);
+struct cxl_memdev_state;
+int cxl_memdev_setup_fw_upload(struct cxl_memdev_state *mds);
 int devm_cxl_dpa_reserve(struct cxl_endpoint_decoder *cxled,
 			 resource_size_t base, resource_size_t len,
 			 resource_size_t skipped);
···
  */
 #define CXL_CAPACITY_MULTIPLIER SZ_256M
 
-/**
+/*
  * Event Interrupt Policy
  *
  * CXL rev 3.0 section 8.2.9.2.4; Table 8-52
···
 /**
  * struct cxl_event_state - Event log driver state
  *
- * @event_buf: Buffer to receive event data
- * @event_log_lock: Serialize event_buf and log use
+ * @buf: Buffer to receive event data
+ * @log_lock: Serialize event_buf and log use
  */
 struct cxl_event_state {
 	struct cxl_get_event_payload *buf;
···
 	struct kernfs_node *sanitize_node;
 };
 
+/*
+ * enum cxl_devtype - delineate type-2 from a generic type-3 device
+ * @CXL_DEVTYPE_DEVMEM - Vendor specific CXL Type-2 device implementing HDM-D or
+ *			 HDM-DB, no requirement that this device implements a
+ *			 mailbox, or other memory-device-standard manageability
+ *			 flows.
+ * @CXL_DEVTYPE_CLASSMEM - Common class definition of a CXL Type-3 device with
+ *			   HDM-H and class-mandatory memory device registers
+ */
+enum cxl_devtype {
+	CXL_DEVTYPE_DEVMEM,
+	CXL_DEVTYPE_CLASSMEM,
+};
+
 /**
  * struct cxl_dev_state - The driver device state
  *
···
  * @cxl_dvsec: Offset to the PCIe device DVSEC
  * @rcd: operating in RCD mode (CXL 3.0 9.11.8 CXL Devices Attached to an RCH)
  * @media_ready: Indicate whether the device media is usable
+ * @dpa_res: Overall DPA resource tree for the device
+ * @pmem_res: Active Persistent memory capacity configuration
+ * @ram_res: Active Volatile memory capacity configuration
+ * @component_reg_phys: register base of component registers
+ * @serial: PCIe Device Serial Number
+ * @type: Generic Memory Class device or Vendor Specific Memory device
+ */
+struct cxl_dev_state {
+	struct device *dev;
+	struct cxl_memdev *cxlmd;
+	struct cxl_regs regs;
+	int cxl_dvsec;
+	bool rcd;
+	bool media_ready;
+	struct resource dpa_res;
+	struct resource pmem_res;
+	struct resource ram_res;
+	resource_size_t component_reg_phys;
+	u64 serial;
+	enum cxl_devtype type;
+};
+
+/**
+ * struct cxl_memdev_state - Generic Type-3 Memory Device Class driver data
+ *
+ * CXL 8.1.12.1 PCI Header - Class Code Register Memory Device defines
+ * common memory device functionality like the presence of a mailbox and
+ * the functionality related to that like Identify Memory Device and Get
+ * Partition Info
+ * @cxlds: Core driver state common across Type-2 and Type-3 devices
  * @payload_size: Size of space for payload
  *                (CXL 2.0 8.2.8.4.3 Mailbox Capabilities Register)
  * @lsa_size: Size of Label Storage Area
···
  * @firmware_version: Firmware version for the memory device.
  * @enabled_cmds: Hardware commands found enabled in CEL.
  * @exclusive_cmds: Commands that are kernel-internal only
- * @dpa_res: Overall DPA resource tree for the device
- * @pmem_res: Active Persistent memory capacity configuration
- * @ram_res: Active Volatile memory capacity configuration
  * @total_bytes: sum of all possible capacities
  * @volatile_only_bytes: hard volatile capacity
  * @persistent_only_bytes: hard persistent capacity
···
  * @active_persistent_bytes: sum of hard + soft persistent
  * @next_volatile_bytes: volatile capacity change pending device reset
  * @next_persistent_bytes: persistent capacity change pending device reset
- * @component_reg_phys: register base of component registers
- * @info: Cached DVSEC information about the device.
- * @serial: PCIe Device Serial Number
  * @event: event log driver state
  * @poison: poison driver state info
  * @fw: firmware upload / activation state
  * @mbox_send: @dev specific transport for transmitting mailbox commands
  *
- * See section 8.2.9.5.2 Capacity Configuration and Label Storage for
+ * See CXL 3.0 8.2.9.8.2 Capacity Configuration and Label Storage for
  * details on capacity parameters.
  */
-struct cxl_dev_state {
-	struct device *dev;
-	struct cxl_memdev *cxlmd;
-
-	struct cxl_regs regs;
-	int cxl_dvsec;
-
-	bool rcd;
-	bool media_ready;
+struct cxl_memdev_state {
+	struct cxl_dev_state cxlds;
 	size_t payload_size;
 	size_t lsa_size;
 	struct mutex mbox_mutex; /* Protects device mailbox and firmware */
 	char firmware_version[0x10];
 	DECLARE_BITMAP(enabled_cmds, CXL_MEM_COMMAND_ID_MAX);
 	DECLARE_BITMAP(exclusive_cmds, CXL_MEM_COMMAND_ID_MAX);
-
-	struct resource dpa_res;
-	struct resource pmem_res;
-	struct resource ram_res;
 	u64 total_bytes;
 	u64 volatile_only_bytes;
 	u64 persistent_only_bytes;
 	u64 partition_align_bytes;
-
 	u64 active_volatile_bytes;
 	u64 active_persistent_bytes;
 	u64 next_volatile_bytes;
 	u64 next_persistent_bytes;
-
-	resource_size_t component_reg_phys;
-	u64 serial;
-
 	struct cxl_event_state event;
 	struct cxl_poison_state poison;
 	struct cxl_security_state security;
 	struct cxl_fw_state fw;
 
 	struct rcuwait mbox_wait;
-	int (*mbox_send)(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd);
+	int (*mbox_send)(struct cxl_memdev_state *mds,
+			 struct cxl_mbox_cmd *cmd);
 };
+
+static inline struct cxl_memdev_state *
+to_cxl_memdev_state(struct cxl_dev_state *cxlds)
+{
+	if (cxlds->type != CXL_DEVTYPE_CLASSMEM)
+		return NULL;
+	return container_of(cxlds, struct cxl_memdev_state, cxlds);
+}
 
 enum cxl_opcode {
 	CXL_MBOX_OP_INVALID		= 0x0000,
···
 	CXL_PMEM_SEC_PASS_USER,
 };
 
-int cxl_internal_send_cmd(struct cxl_dev_state *cxlds,
+int cxl_internal_send_cmd(struct cxl_memdev_state *mds,
 			  struct cxl_mbox_cmd *cmd);
-int cxl_dev_state_identify(struct cxl_dev_state *cxlds);
+int cxl_dev_state_identify(struct cxl_memdev_state *mds);
 int cxl_await_media_ready(struct cxl_dev_state *cxlds);
-int cxl_enumerate_cmds(struct cxl_dev_state *cxlds);
-int cxl_mem_create_range_info(struct cxl_dev_state *cxlds);
-struct cxl_dev_state *cxl_dev_state_create(struct device *dev);
-void set_exclusive_cxl_commands(struct cxl_dev_state *cxlds, unsigned long *cmds);
-void clear_exclusive_cxl_commands(struct cxl_dev_state *cxlds, unsigned long *cmds);
-void cxl_mem_get_event_records(struct cxl_dev_state *cxlds, u32 status);
-int cxl_set_timestamp(struct cxl_dev_state *cxlds);
-int cxl_poison_state_init(struct cxl_dev_state *cxlds);
+int cxl_enumerate_cmds(struct cxl_memdev_state *mds);
+int cxl_mem_create_range_info(struct cxl_memdev_state *mds);
+struct cxl_memdev_state *cxl_memdev_state_create(struct device *dev);
+void set_exclusive_cxl_commands(struct cxl_memdev_state *mds,
+				unsigned long *cmds);
+void clear_exclusive_cxl_commands(struct cxl_memdev_state *mds,
+				  unsigned long *cmds);
+void cxl_mem_get_event_records(struct cxl_memdev_state *mds, u32 status);
+int cxl_set_timestamp(struct cxl_memdev_state *mds);
+int cxl_poison_state_init(struct cxl_memdev_state *mds);
 int cxl_mem_get_poison(struct cxl_memdev *cxlmd, u64 offset, u64 len,
 		       struct cxl_region *cxlr);
 int cxl_trigger_poison_list(struct cxl_memdev *cxlmd);
···
 }
 #endif
 
-int cxl_mem_sanitize(struct cxl_dev_state *cxlds, u16 cmd);
+int cxl_mem_sanitize(struct cxl_memdev_state *mds, u16 cmd);
 
 struct cxl_hdm {
 	struct cxl_component_regs regs;

drivers/cxl/mem.c

···
 static int cxl_mem_probe(struct device *dev)
 {
 	struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct cxl_dev_state *cxlds = cxlmd->cxlds;
 	struct device *endpoint_parent;
 	struct cxl_port *parent_port;
···
 	dentry = cxl_debugfs_create_dir(dev_name(dev));
 	debugfs_create_devm_seqfile(dev, "dpamem", dentry, cxl_mem_dpa_show);
 
-	if (test_bit(CXL_POISON_ENABLED_INJECT, cxlds->poison.enabled_cmds))
+	if (test_bit(CXL_POISON_ENABLED_INJECT, mds->poison.enabled_cmds))
 		debugfs_create_file("inject_poison", 0200, dentry, cxlmd,
 				    &cxl_poison_inject_fops);
-	if (test_bit(CXL_POISON_ENABLED_CLEAR, cxlds->poison.enabled_cmds))
+	if (test_bit(CXL_POISON_ENABLED_CLEAR, mds->poison.enabled_cmds))
 		debugfs_create_file("clear_poison", 0200, dentry, cxlmd,
 				    &cxl_poison_clear_fops);
 
···
 {
 	if (a == &dev_attr_trigger_poison_list.attr) {
 		struct device *dev = kobj_to_dev(kobj);
+		struct cxl_memdev *cxlmd = to_cxl_memdev(dev);
+		struct cxl_memdev_state *mds =
+			to_cxl_memdev_state(cxlmd->cxlds);
 
 		if (!test_bit(CXL_POISON_ENABLED_LIST,
-			      to_cxl_memdev(dev)->cxlds->poison.enabled_cmds))
+			      mds->poison.enabled_cmds))
 			return 0;
 	}
 	return a->mode;

drivers/cxl/pci.c

···
 	u16 opcode;
 	struct cxl_dev_id *dev_id = id;
 	struct cxl_dev_state *cxlds = dev_id->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlds);
 
 	if (!cxl_mbox_background_complete(cxlds))
 		return IRQ_NONE;
···
 	reg = readq(cxlds->regs.mbox + CXLDEV_MBOX_BG_CMD_STATUS_OFFSET);
 	opcode = FIELD_GET(CXLDEV_MBOX_BG_CMD_COMMAND_OPCODE_MASK, reg);
 	if (opcode == CXL_MBOX_OP_SANITIZE) {
-		if (cxlds->security.sanitize_node)
-			sysfs_notify_dirent(cxlds->security.sanitize_node);
+		if (mds->security.sanitize_node)
+			sysfs_notify_dirent(mds->security.sanitize_node);
 
 		dev_dbg(cxlds->dev, "Sanitization operation ended\n");
 	} else {
 		/* short-circuit the wait in __cxl_pci_mbox_send_cmd() */
-		rcuwait_wake_up(&cxlds->mbox_wait);
+		rcuwait_wake_up(&mds->mbox_wait);
 	}
 
 	return IRQ_HANDLED;
···
  */
 static void cxl_mbox_sanitize_work(struct work_struct *work)
 {
-	struct cxl_dev_state *cxlds;
+	struct cxl_memdev_state *mds =
+		container_of(work, typeof(*mds), security.poll_dwork.work);
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 
-	cxlds = container_of(work,
-			     struct cxl_dev_state, security.poll_dwork.work);
-
-	mutex_lock(&cxlds->mbox_mutex);
+	mutex_lock(&mds->mbox_mutex);
 	if (cxl_mbox_background_complete(cxlds)) {
-		cxlds->security.poll_tmo_secs = 0;
+		mds->security.poll_tmo_secs = 0;
 		put_device(cxlds->dev);
 
-		if (cxlds->security.sanitize_node)
-			sysfs_notify_dirent(cxlds->security.sanitize_node);
+		if (mds->security.sanitize_node)
+			sysfs_notify_dirent(mds->security.sanitize_node);
 
 		dev_dbg(cxlds->dev, "Sanitization operation ended\n");
 	} else {
-		int timeout = cxlds->security.poll_tmo_secs + 10;
+		int timeout = mds->security.poll_tmo_secs + 10;
 
-		cxlds->security.poll_tmo_secs = min(15 * 60, timeout);
-		queue_delayed_work(system_wq, &cxlds->security.poll_dwork,
+		mds->security.poll_tmo_secs = min(15 * 60, timeout);
+		queue_delayed_work(system_wq, &mds->security.poll_dwork,
 				   timeout * HZ);
 	}
-	mutex_unlock(&cxlds->mbox_mutex);
+	mutex_unlock(&mds->mbox_mutex);
 }
 
 /**
  * __cxl_pci_mbox_send_cmd() - Execute a mailbox command
- * @cxlds: The device state to communicate with.
+ * @mds: The memory device driver data
  * @mbox_cmd: Command to send to the memory device.
  *
  * Context: Any context. Expects mbox_mutex to be held.
···
  * not need to coordinate with each other. The driver only uses the primary
  * mailbox.
  */
-static int __cxl_pci_mbox_send_cmd(struct cxl_dev_state *cxlds,
+static int __cxl_pci_mbox_send_cmd(struct cxl_memdev_state *mds,
 				   struct cxl_mbox_cmd *mbox_cmd)
 {
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 	void __iomem *payload = cxlds->regs.mbox + CXLDEV_MBOX_PAYLOAD_OFFSET;
 	struct device *dev = cxlds->dev;
 	u64 cmd_reg, status_reg;
 	size_t out_len;
 	int rc;
 
-	lockdep_assert_held(&cxlds->mbox_mutex);
+	lockdep_assert_held(&mds->mbox_mutex);
 
 	/*
 	 * Here are the steps from 8.2.8.4 of the CXL 2.0 spec.
···
 	 * not be in sync. Ensure no new command comes in until so. Keep the
 	 * hardware semantics and only allow device health status.
 	 */
-	if (cxlds->security.poll_tmo_secs > 0) {
+	if (mds->security.poll_tmo_secs > 0) {
 		if (mbox_cmd->opcode != CXL_MBOX_OP_GET_HEALTH_INFO)
 			return -EBUSY;
 	}
···
 		 * and allow userspace to poll(2) for completion.
 		 */
 		if (mbox_cmd->opcode == CXL_MBOX_OP_SANITIZE) {
-			if (cxlds->security.poll_tmo_secs != -1) {
+			if (mds->security.poll_tmo_secs != -1) {
 				/* hold the device throughout */
 				get_device(cxlds->dev);
 
 				/* give first timeout a second */
 				timeout = 1;
-				cxlds->security.poll_tmo_secs = timeout;
+				mds->security.poll_tmo_secs = timeout;
 				queue_delayed_work(system_wq,
-						   &cxlds->security.poll_dwork,
+						   &mds->security.poll_dwork,
 						   timeout * HZ);
 			}
 
···
 
 		timeout = mbox_cmd->poll_interval_ms;
 		for (i = 0; i < mbox_cmd->poll_count; i++) {
-			if (rcuwait_wait_event_timeout(&cxlds->mbox_wait,
+			if (rcuwait_wait_event_timeout(&mds->mbox_wait,
 				       cxl_mbox_background_complete(cxlds),
 				       TASK_UNINTERRUPTIBLE,
 				       msecs_to_jiffies(timeout)) > 0)
···
 		 * have requested less data than the hardware supplied even
 		 * within spec.
 		 */
-		size_t n = min3(mbox_cmd->size_out, cxlds->payload_size, out_len);
+		size_t n;
 
+		n = min3(mbox_cmd->size_out, mds->payload_size, out_len);
 		memcpy_fromio(mbox_cmd->payload_out, payload, n);
 		mbox_cmd->size_out = n;
 	} else {
···
 	return 0;
 }
 
-static int cxl_pci_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int cxl_pci_mbox_send(struct cxl_memdev_state *mds,
+			     struct cxl_mbox_cmd *cmd)
 {
 	int rc;
 
-	mutex_lock_io(&cxlds->mbox_mutex);
-	rc = __cxl_pci_mbox_send_cmd(cxlds, cmd);
-	mutex_unlock(&cxlds->mbox_mutex);
+	mutex_lock_io(&mds->mbox_mutex);
+	rc = __cxl_pci_mbox_send_cmd(mds, cmd);
+	mutex_unlock(&mds->mbox_mutex);
 
 	return rc;
 }
 
-static int cxl_pci_setup_mailbox(struct cxl_dev_state *cxlds)
+static int cxl_pci_setup_mailbox(struct cxl_memdev_state *mds)
 {
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 	const int cap = readl(cxlds->regs.mbox + CXLDEV_MBOX_CAPS_OFFSET);
+	struct device *dev = cxlds->dev;
 	unsigned long timeout;
 	u64 md_status;
 
···
 	} while (!time_after(jiffies, timeout));
 
 	if (!(md_status & CXLMDEV_MBOX_IF_READY)) {
-		cxl_err(cxlds->dev, md_status,
-			"timeout awaiting mailbox ready");
+		cxl_err(dev, md_status, "timeout awaiting mailbox ready");
 		return -ETIMEDOUT;
 	}
 
···
 	 * source for future doorbell busy events.
 	 */
 	if (cxl_pci_mbox_wait_for_doorbell(cxlds) != 0) {
-		cxl_err(cxlds->dev, md_status, "timeout awaiting mailbox idle");
+		cxl_err(dev, md_status, "timeout awaiting mailbox idle");
 		return -ETIMEDOUT;
 	}
 
-	cxlds->mbox_send = cxl_pci_mbox_send;
-	cxlds->payload_size =
+	mds->mbox_send = cxl_pci_mbox_send;
+	mds->payload_size =
 		1 << FIELD_GET(CXLDEV_MBOX_CAP_PAYLOAD_SIZE_MASK, cap);
 
 	/*
···
 	 * there's no point in going forward. If the size is too large, there's
 	 * no harm is soft limiting it.
 	 */
-	cxlds->payload_size = min_t(size_t, cxlds->payload_size, SZ_1M);
-	if (cxlds->payload_size < 256) {
-		dev_err(cxlds->dev, "Mailbox is too small (%zub)",
-			cxlds->payload_size);
+	mds->payload_size = min_t(size_t, mds->payload_size, SZ_1M);
+	if (mds->payload_size < 256) {
+		dev_err(dev, "Mailbox is too small (%zub)",
+			mds->payload_size);
 		return -ENXIO;
 	}
 
-	dev_dbg(cxlds->dev, "Mailbox payload sized %zu",
-		cxlds->payload_size);
+	dev_dbg(dev, "Mailbox payload sized %zu", mds->payload_size);
 
-	rcuwait_init(&cxlds->mbox_wait);
+	rcuwait_init(&mds->mbox_wait);
 
 	if (cap & CXLDEV_MBOX_CAP_BG_CMD_IRQ) {
 		u32 ctrl;
···
 	}
 
 mbox_poll:
-	cxlds->security.poll = true;
-	INIT_DELAYED_WORK(&cxlds->security.poll_dwork, cxl_mbox_sanitize_work);
+	mds->security.poll = true;
+	INIT_DELAYED_WORK(&mds->security.poll_dwork, cxl_mbox_sanitize_work);
 
 	dev_dbg(cxlds->dev, "Mailbox interrupts are unsupported");
 	return 0;
···
 	return pci_pcie_type(pdev) == PCI_EXP_TYPE_RC_END;
 }
 
-/*
- * CXL v3.0 6.2.3 Table 6-4
- * The table indicates that if PCIe Flit Mode is set, then CXL is in 256B flits
- * mode, otherwise it's 68B flits mode.
- */
-static bool cxl_pci_flit_256(struct pci_dev *pdev)
-{
-	u16 lnksta2;
-
-	pcie_capability_read_word(pdev, PCI_EXP_LNKSTA2, &lnksta2);
-	return lnksta2 & PCI_EXP_LNKSTA2_FLIT;
-}
-
 static int cxl_pci_ras_unmask(struct pci_dev *pdev)
 {
 	struct pci_host_bridge *host_bridge = pci_find_host_bridge(pdev->bus);
···
 		addr = cxlds->regs.ras + CXL_RAS_UNCORRECTABLE_MASK_OFFSET;
 		orig_val = readl(addr);
 
-		mask = CXL_RAS_UNCORRECTABLE_MASK_MASK;
-		if (!cxl_pci_flit_256(pdev))
-			mask &= ~CXL_RAS_UNCORRECTABLE_MASK_F256B_MASK;
+		mask = CXL_RAS_UNCORRECTABLE_MASK_MASK |
+		       CXL_RAS_UNCORRECTABLE_MASK_F256B_MASK;
 		val = orig_val & ~mask;
 		writel(val, addr);
 		dev_dbg(&pdev->dev,
···
 
 /*
  * There is a single buffer for reading event logs from the mailbox.  All logs
- * share this buffer protected by the cxlds->event_log_lock.
+ * share this buffer protected by the mds->event_log_lock.
  */
-static int cxl_mem_alloc_event_buf(struct cxl_dev_state *cxlds)
+static int cxl_mem_alloc_event_buf(struct cxl_memdev_state *mds)
 {
 	struct cxl_get_event_payload *buf;
 
-	buf = kvmalloc(cxlds->payload_size, GFP_KERNEL);
+	buf = kvmalloc(mds->payload_size, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
-	cxlds->event.buf = buf;
+	mds->event.buf = buf;
 
-	return devm_add_action_or_reset(cxlds->dev, free_event_buf, buf);
+	return devm_add_action_or_reset(mds->cxlds.dev, free_event_buf, buf);
 }
 
 static int cxl_alloc_irq_vectors(struct pci_dev *pdev)
···
 {
 	struct cxl_dev_id *dev_id = id;
 	struct cxl_dev_state *cxlds = dev_id->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlds);
 	u32 status;
 
 	do {
···
 		status &= CXLDEV_EVENT_STATUS_ALL;
 		if (!status)
 			break;
-		cxl_mem_get_event_records(cxlds, status);
+		cxl_mem_get_event_records(mds, status);
 		cond_resched();
 	} while (status);
 
···
 	return cxl_request_irq(cxlds, irq, NULL, cxl_event_thread);
 }
 
-static int cxl_event_get_int_policy(struct cxl_dev_state *cxlds,
+static int cxl_event_get_int_policy(struct cxl_memdev_state *mds,
 				    struct cxl_event_interrupt_policy *policy)
 {
 	struct cxl_mbox_cmd mbox_cmd = {
···
 	};
 	int rc;
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0)
-		dev_err(cxlds->dev, "Failed to get event interrupt policy : %d",
-			rc);
+		dev_err(mds->cxlds.dev,
+			"Failed to get event interrupt policy : %d", rc);
 
 	return rc;
 }
 
-static int cxl_event_config_msgnums(struct cxl_dev_state *cxlds,
+static int cxl_event_config_msgnums(struct cxl_memdev_state *mds,
 				    struct cxl_event_interrupt_policy *policy)
 {
 	struct cxl_mbox_cmd mbox_cmd;
···
 		.size_in = sizeof(*policy),
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0) {
-		dev_err(cxlds->dev, "Failed to set event interrupt policy : %d",
+		dev_err(mds->cxlds.dev, "Failed to set event interrupt policy : %d",
 			rc);
 		return rc;
 	}
 
 	/* Retrieve final interrupt settings */
-	return cxl_event_get_int_policy(cxlds, policy);
+	return cxl_event_get_int_policy(mds, policy);
 }
 
-static int cxl_event_irqsetup(struct cxl_dev_state *cxlds)
+static int cxl_event_irqsetup(struct cxl_memdev_state *mds)
 {
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 	struct cxl_event_interrupt_policy policy;
 	int rc;
 
-	rc = cxl_event_config_msgnums(cxlds, &policy);
+	rc = cxl_event_config_msgnums(mds, &policy);
 	if (rc)
 		return rc;
 
···
 }
 
 static int cxl_event_config(struct pci_host_bridge *host_bridge,
-			    struct cxl_dev_state *cxlds)
+			    struct cxl_memdev_state *mds)
 {
 	struct cxl_event_interrupt_policy policy;
 	int rc;
···
 	if (!host_bridge->native_cxl_error)
 		return 0;
 
-	rc = cxl_mem_alloc_event_buf(cxlds);
+	rc = cxl_mem_alloc_event_buf(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_event_get_int_policy(cxlds, &policy);
+	rc = cxl_event_get_int_policy(mds, &policy);
 	if (rc)
 		return rc;
 
···
 	    cxl_event_int_is_fw(policy.warn_settings) ||
 	    cxl_event_int_is_fw(policy.failure_settings) ||
 	    cxl_event_int_is_fw(policy.fatal_settings)) {
-		dev_err(cxlds->dev, "FW still in control of Event Logs despite _OSC settings\n");
+		dev_err(mds->cxlds.dev,
+			"FW still in control of Event Logs despite _OSC settings\n");
 		return -EBUSY;
 	}
 
-	rc = cxl_event_irqsetup(cxlds);
+	rc = cxl_event_irqsetup(mds);
 	if (rc)
 		return rc;
 
-	cxl_mem_get_event_records(cxlds, CXLDEV_EVENT_STATUS_ALL);
+	cxl_mem_get_event_records(mds, CXLDEV_EVENT_STATUS_ALL);
 
 	return 0;
 }
···
 static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	struct pci_host_bridge *host_bridge = pci_find_host_bridge(pdev->bus);
+	struct cxl_memdev_state *mds;
+	struct cxl_dev_state *cxlds;
 	struct cxl_register_map map;
 	struct cxl_memdev *cxlmd;
-	struct cxl_dev_state *cxlds;
 	int rc;
 
 	/*
···
 		return rc;
 	pci_set_master(pdev);
 
-	cxlds = cxl_dev_state_create(&pdev->dev);
-	if (IS_ERR(cxlds))
-		return PTR_ERR(cxlds);
+	mds = cxl_memdev_state_create(&pdev->dev);
+	if (IS_ERR(mds))
+		return PTR_ERR(mds);
+	cxlds = &mds->cxlds;
 	pci_set_drvdata(pdev, cxlds);
 
 	cxlds->rcd = is_cxl_restricted(pdev);
···
 	if (rc)
 		return rc;
 
-	rc = cxl_pci_setup_mailbox(cxlds);
+	rc = cxl_pci_setup_mailbox(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_enumerate_cmds(cxlds);
+	rc = cxl_enumerate_cmds(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_set_timestamp(cxlds);
+	rc = cxl_set_timestamp(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_poison_state_init(cxlds);
+	rc = cxl_poison_state_init(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_dev_state_identify(cxlds);
+	rc = cxl_dev_state_identify(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_mem_create_range_info(cxlds);
+	rc = cxl_mem_create_range_info(mds);
 	if (rc)
 		return rc;
 
···
 	if (IS_ERR(cxlmd))
 		return PTR_ERR(cxlmd);
 
-	rc = cxl_memdev_setup_fw_upload(cxlds);
+	rc = cxl_memdev_setup_fw_upload(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_event_config(host_bridge, cxlds);
+	rc = cxl_event_config(host_bridge, mds);
 	if (rc)
 		return rc;
 

drivers/cxl/pmem.c

···
 
 static __read_mostly DECLARE_BITMAP(exclusive_cmds, CXL_MEM_COMMAND_ID_MAX);
 
-static void clear_exclusive(void *cxlds)
+static void clear_exclusive(void *mds)
 {
-	clear_exclusive_cxl_commands(cxlds, exclusive_cmds);
+	clear_exclusive_cxl_commands(mds, exclusive_cmds);
 }
 
 static void unregister_nvdimm(void *nvdimm)
···
 	struct cxl_nvdimm *cxl_nvd = to_cxl_nvdimm(dev);
 	struct cxl_memdev *cxlmd = cxl_nvd->cxlmd;
 	struct cxl_nvdimm_bridge *cxl_nvb = cxlmd->cxl_nvb;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	unsigned long flags = 0, cmd_mask = 0;
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
 	struct nvdimm *nvdimm;
 	int rc;
 
-	set_exclusive_cxl_commands(cxlds, exclusive_cmds);
-	rc = devm_add_action_or_reset(dev, clear_exclusive, cxlds);
+	set_exclusive_cxl_commands(mds, exclusive_cmds);
+	rc = devm_add_action_or_reset(dev, clear_exclusive, mds);
 	if (rc)
 		return rc;
 
···
 	},
 };
 
-static int cxl_pmem_get_config_size(struct cxl_dev_state *cxlds,
+static int cxl_pmem_get_config_size(struct cxl_memdev_state *mds,
 				    struct nd_cmd_get_config_size *cmd,
 				    unsigned int buf_len)
 {
 	if (sizeof(*cmd) > buf_len)
 		return -EINVAL;
 
-	*cmd = (struct nd_cmd_get_config_size) {
-		 .config_size = cxlds->lsa_size,
-		 .max_xfer = cxlds->payload_size - sizeof(struct cxl_mbox_set_lsa),
+	*cmd = (struct nd_cmd_get_config_size){
+		.config_size = mds->lsa_size,
+		.max_xfer =
+			mds->payload_size - sizeof(struct cxl_mbox_set_lsa),
 	};
 
 	return 0;
 }
 
-static int cxl_pmem_get_config_data(struct cxl_dev_state *cxlds,
+static int cxl_pmem_get_config_data(struct cxl_memdev_state *mds,
 				    struct nd_cmd_get_config_data_hdr *cmd,
 				    unsigned int buf_len)
 {
···
 		.payload_out = cmd->out_buf,
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	cmd->status = 0;
 
 	return rc;
 }
 
-static int cxl_pmem_set_config_data(struct cxl_dev_state *cxlds,
+static int cxl_pmem_set_config_data(struct cxl_memdev_state *mds,
 				    struct nd_cmd_set_config_hdr *cmd,
 				    unsigned int buf_len)
 {
···
 		.size_in = struct_size(set_lsa, data, cmd->in_length),
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 
 	/*
 	 * Set "firmware" status (4-packed bytes at the end of the input
···
 	struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm);
 	unsigned long cmd_mask = nvdimm_cmd_mask(nvdimm);
 	struct cxl_memdev *cxlmd = cxl_nvd->cxlmd;
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 
 	if (!test_bit(cmd, &cmd_mask))
 		return -ENOTTY;
 
 	switch (cmd) {
 	case ND_CMD_GET_CONFIG_SIZE:
-		return cxl_pmem_get_config_size(cxlds, buf, buf_len);
+		return cxl_pmem_get_config_size(mds, buf, buf_len);
 	case ND_CMD_GET_CONFIG_DATA:
-		return cxl_pmem_get_config_data(cxlds, buf, buf_len);
+		return cxl_pmem_get_config_data(mds, buf, buf_len);
 	case ND_CMD_SET_CONFIG_DATA:
-		return cxl_pmem_set_config_data(cxlds, buf, buf_len);
+		return cxl_pmem_set_config_data(mds, buf, buf_len);
 	default:
 		return -ENOTTY;
 	}

drivers/cxl/port.c

···
 static int cxl_switch_port_probe(struct cxl_port *port)
 {
 	struct cxl_hdm *cxlhdm;
-	int rc, nr_dports;
+	int rc;
 
-	nr_dports = devm_cxl_port_enumerate_dports(port);
-	if (nr_dports < 0)
-		return nr_dports;
-
-	cxlhdm = devm_cxl_setup_hdm(port, NULL);
-	rc = devm_cxl_enable_hdm(port, cxlhdm);
-	if (rc)
+	rc = devm_cxl_port_enumerate_dports(port);
+	if (rc < 0)
 		return rc;
 
+	cxlhdm = devm_cxl_setup_hdm(port, NULL);
 	if (!IS_ERR(cxlhdm))
 		return devm_cxl_enumerate_decoders(cxlhdm, NULL);
 
···
 		return PTR_ERR(cxlhdm);
 	}
 
-	if (nr_dports == 1) {
+	if (rc == 1) {
 		dev_dbg(&port->dev, "Fallback to passthrough decoder\n");
 		return devm_cxl_add_passthrough_decoder(port);
 	}

drivers/cxl/security.c

···
 {
 	struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm);
 	struct cxl_memdev *cxlmd = cxl_nvd->cxlmd;
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	unsigned long security_flags = 0;
 	struct cxl_get_security_output {
 		__le32 flags;
···
 		.payload_out = &out,
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0)
 		return 0;
 
 	sec_out = le32_to_cpu(out.flags);
 	/* cache security state */
-	cxlds->security.state = sec_out;
+	mds->security.state = sec_out;
 
 	if (ptype == NVDIMM_MASTER) {
 		if (sec_out & CXL_PMEM_SEC_STATE_MASTER_PASS_SET)
···
 {
 	struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm);
 	struct cxl_memdev *cxlmd = cxl_nvd->cxlmd;
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct cxl_mbox_cmd mbox_cmd;
 	struct cxl_set_pass set_pass;
 
···
 		.payload_in = &set_pass,
 	};
 
-	return cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	return cxl_internal_send_cmd(mds, &mbox_cmd);
 }
 
 static int __cxl_pmem_security_disable(struct nvdimm *nvdimm,
···
 {
 	struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm);
 	struct cxl_memdev *cxlmd = cxl_nvd->cxlmd;
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct cxl_disable_pass dis_pass;
 	struct cxl_mbox_cmd mbox_cmd;
 
···
 		.payload_in = &dis_pass,
 	};
 
-	return cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	return cxl_internal_send_cmd(mds, &mbox_cmd);
 }
 
 static int cxl_pmem_security_disable(struct nvdimm *nvdimm,
···
 {
 	struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm);
 	struct cxl_memdev *cxlmd = cxl_nvd->cxlmd;
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct cxl_mbox_cmd mbox_cmd = {
 		.opcode = CXL_MBOX_OP_FREEZE_SECURITY,
 	};
 
-	return cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	return cxl_internal_send_cmd(mds, &mbox_cmd);
 }
 
 static int cxl_pmem_security_unlock(struct nvdimm *nvdimm,
···
 {
 	struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm);
 	struct cxl_memdev *cxlmd = cxl_nvd->cxlmd;
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	u8 pass[NVDIMM_PASSPHRASE_LEN];
 	struct cxl_mbox_cmd mbox_cmd;
 	int rc;
···
 		.payload_in = pass,
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0)
 		return rc;
 
···
 {
 	struct cxl_nvdimm *cxl_nvd = nvdimm_provider_data(nvdimm);
 	struct cxl_memdev *cxlmd = cxl_nvd->cxlmd;
-	struct cxl_dev_state *cxlds = cxlmd->cxlds;
+	struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds);
 	struct cxl_mbox_cmd mbox_cmd;
 	struct cxl_pass_erase erase;
 	int rc;
···
 		.payload_in = &erase,
 	};
 
-	rc = cxl_internal_send_cmd(cxlds, &mbox_cmd);
+	rc = cxl_internal_send_cmd(mds, &mbox_cmd);
 	if (rc < 0)
 		return rc;
 

tools/testing/cxl/Kbuild

···
 ldflags-y += --wrap=nvdimm_bus_register
 ldflags-y += --wrap=devm_cxl_port_enumerate_dports
 ldflags-y += --wrap=devm_cxl_setup_hdm
-ldflags-y += --wrap=devm_cxl_enable_hdm
 ldflags-y += --wrap=devm_cxl_add_passthrough_decoder
 ldflags-y += --wrap=devm_cxl_enumerate_decoders
 ldflags-y += --wrap=cxl_await_media_ready

tools/testing/cxl/test/cxl.c

···
 
 	cxld->interleave_ways = 1;
 	cxld->interleave_granularity = 256;
-	cxld->target_type = CXL_DECODER_EXPANDER;
+	cxld->target_type = CXL_DECODER_HOSTONLYMEM;
 	cxld->commit = mock_decoder_commit;
 	cxld->reset = mock_decoder_reset;
 }
···
 
 	cxld->interleave_ways = 2;
 	eig_to_granularity(window->granularity, &cxld->interleave_granularity);
-	cxld->target_type = CXL_DECODER_EXPANDER;
+	cxld->target_type = CXL_DECODER_HOSTONLYMEM;
 	cxld->flags = CXL_DECODER_F_ENABLE;
 	cxled->state = CXL_DECODER_STATE_AUTO;
 	port->commit_end = cxld->id;
···
 		} else
 			cxlsd->target[0] = dport;
 		cxld = &cxlsd->cxld;
-		cxld->target_type = CXL_DECODER_EXPANDER;
+		cxld->target_type = CXL_DECODER_HOSTONLYMEM;
 		cxld->flags = CXL_DECODER_F_ENABLE;
 		iter->commit_end = 0;
 		/*

tools/testing/cxl/test/mem.c

···
 };
 
 struct mock_event_store {
-	struct cxl_dev_state *cxlds;
+	struct cxl_memdev_state *mds;
 	struct mock_event_log mock_logs[CXL_EVENT_TYPE_MAX];
 	u32 ev_status;
 };
···
 	log->nr_events++;
 }
 
-static int mock_get_event(struct cxl_dev_state *cxlds,
-			  struct cxl_mbox_cmd *cmd)
+static int mock_get_event(struct device *dev, struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_get_event_payload *pl;
 	struct mock_event_log *log;
···
 
 	memset(cmd->payload_out, 0, cmd->size_out);
 
-	log = event_find_log(cxlds->dev, log_type);
+	log = event_find_log(dev, log_type);
 	if (!log || event_log_empty(log))
 		return 0;
 
···
 	return 0;
 }
 
-static int mock_clear_event(struct cxl_dev_state *cxlds,
-			    struct cxl_mbox_cmd *cmd)
+static int mock_clear_event(struct device *dev, struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_clear_event_payload *pl = cmd->payload_in;
 	struct mock_event_log *log;
···
 	if (log_type >= CXL_EVENT_TYPE_MAX)
 		return -EINVAL;
 
-	log = event_find_log(cxlds->dev, log_type);
+	log = event_find_log(dev, log_type);
 	if (!log)
 		return 0; /* No mock data in this log */
 
···
 	 * However, this is not good behavior for the host so test it.
 	 */
 	if (log->clear_idx + pl->nr_recs > log->cur_idx) {
-		dev_err(cxlds->dev,
+		dev_err(dev,
 			"Attempting to clear more events than returned!\n");
 		return -EINVAL;
 	}
···
 	     nr < pl->nr_recs;
 	     nr++, handle++) {
 		if (handle != le16_to_cpu(pl->handles[nr])) {
-			dev_err(cxlds->dev, "Clearing events out of order\n");
+			dev_err(dev, "Clearing events out of order\n");
 			return -EINVAL;
 		}
 	}
···
 			event_reset_log(log);
 	}
 
-	cxl_mem_get_event_records(mes->cxlds, mes->ev_status);
+	cxl_mem_get_event_records(mes->mds, mes->ev_status);
 }
 
 struct cxl_event_record_raw maint_needed = {
···
 	return 0;
 }
 
-static int mock_get_log(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_get_log(struct cxl_memdev_state *mds, struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_get_log *gl = cmd->payload_in;
 	u32 offset = le32_to_cpu(gl->offset);
···
 
 	if (cmd->size_in < sizeof(*gl))
 		return -EINVAL;
-	if (length > cxlds->payload_size)
+	if (length > mds->payload_size)
 		return -EINVAL;
 	if (offset + length > sizeof(mock_cel))
 		return -EINVAL;
···
 	return 0;
 }
 
-static int mock_rcd_id(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_rcd_id(struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_identify id = {
 		.fw_revision = { "mock fw v1 " },
···
 	return 0;
 }
 
-static int mock_id(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_id(struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_identify id = {
 		.fw_revision = { "mock fw v1 " },
···
 	return 0;
 }
 
-static int mock_partition_info(struct cxl_dev_state *cxlds,
-			       struct cxl_mbox_cmd *cmd)
+static int mock_partition_info(struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_get_partition_info pi = {
 		.active_volatile_cap =
···
 	return 0;
 }
 
-static int mock_sanitize(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_sanitize(struct cxl_mockmem_data *mdata,
+			 struct cxl_mbox_cmd *cmd)
 {
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
-
 	if (cmd->size_in != 0)
 		return -EINVAL;
 
···
 	return 0; /* assume less than 2 secs, no bg */
 }
 
-static int mock_secure_erase(struct cxl_dev_state *cxlds,
+static int mock_secure_erase(struct cxl_mockmem_data *mdata,
 			     struct cxl_mbox_cmd *cmd)
 {
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
-
 	if (cmd->size_in != 0)
 		return -EINVAL;
 
···
 	return 0;
 }
 
-static int mock_get_security_state(struct cxl_dev_state *cxlds,
+static int mock_get_security_state(struct cxl_mockmem_data *mdata,
 				   struct cxl_mbox_cmd *cmd)
 {
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
-
 	if (cmd->size_in)
 		return -EINVAL;
 
···
 		mdata->security_state |= CXL_PMEM_SEC_STATE_USER_PLIMIT;
 }
 
-static int mock_set_passphrase(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_set_passphrase(struct cxl_mockmem_data *mdata,
+			       struct cxl_mbox_cmd *cmd)
 {
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
 	struct cxl_set_pass *set_pass;
 
 	if (cmd->size_in != sizeof(*set_pass))
···
 	return -EINVAL;
 }
 
-static int mock_disable_passphrase(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_disable_passphrase(struct cxl_mockmem_data *mdata,
+				   struct cxl_mbox_cmd *cmd)
 {
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
 	struct cxl_disable_pass *dis_pass;
 
 	if (cmd->size_in != sizeof(*dis_pass))
···
 	return 0;
 }
 
-static int mock_freeze_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_freeze_security(struct cxl_mockmem_data *mdata,
+				struct cxl_mbox_cmd *cmd)
 {
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
-
 	if (cmd->size_in != 0)
 		return -EINVAL;
 
···
 	return 0;
 }
 
-static int mock_unlock_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_unlock_security(struct cxl_mockmem_data *mdata,
+				struct cxl_mbox_cmd *cmd)
 {
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
-
 	if (cmd->size_in != NVDIMM_PASSPHRASE_LEN)
 		return -EINVAL;
 
···
 	return 0;
 }
 
-static int mock_passphrase_secure_erase(struct cxl_dev_state *cxlds,
+static int mock_passphrase_secure_erase(struct cxl_mockmem_data *mdata,
 					struct cxl_mbox_cmd *cmd)
 {
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
 	struct cxl_pass_erase *erase;
 
 	if (cmd->size_in != sizeof(*erase))
···
 	return 0;
 }
 
-static int mock_get_lsa(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_get_lsa(struct cxl_mockmem_data *mdata,
+			struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_get_lsa *get_lsa = cmd->payload_in;
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
 	void *lsa = mdata->lsa;
 	u32 offset, length;
 
···
 	return 0;
 }
 
-static int mock_set_lsa(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int mock_set_lsa(struct cxl_mockmem_data *mdata,
+			struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_set_lsa *set_lsa = cmd->payload_in;
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
 	void *lsa = mdata->lsa;
 	u32 offset, length;
 
···
 	return 0;
 }
 
-static int mock_health_info(struct cxl_dev_state *cxlds,
-			    struct cxl_mbox_cmd *cmd)
+static int mock_health_info(struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_health_info health_info = {
 		/* set flags for maint needed, perf degraded, hw replacement */
···
 };
 ATTRIBUTE_GROUPS(cxl_mock_mem_core);
 
-static int mock_fw_info(struct cxl_dev_state *cxlds,
-			    struct cxl_mbox_cmd *cmd)
+static int mock_fw_info(struct cxl_mockmem_data *mdata,
+			struct cxl_mbox_cmd *cmd)
 {
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
 	struct cxl_mbox_get_fw_info fw_info = {
 		.num_slots = FW_SLOTS,
 		.slot_info = (mdata->fw_slot & 0x7) |
···
 	return 0;
 }
 
-static int mock_transfer_fw(struct cxl_dev_state *cxlds,
+static int mock_transfer_fw(struct cxl_mockmem_data *mdata,
 			    struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_transfer_fw *transfer = cmd->payload_in;
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
 	void *fw = mdata->fw;
 	size_t offset, length;
 
···
 	return 0;
 }
 
-static int mock_activate_fw(struct cxl_dev_state *cxlds,
+static int mock_activate_fw(struct cxl_mockmem_data *mdata,
 			    struct cxl_mbox_cmd *cmd)
 {
 	struct cxl_mbox_activate_fw *activate = cmd->payload_in;
-	struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev);
 
 	if (activate->slot == 0 || activate->slot > FW_SLOTS)
 		return -EINVAL;
···
 	return -EINVAL;
 }
 
-static int cxl_mock_mbox_send(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd)
+static int cxl_mock_mbox_send(struct cxl_memdev_state *mds,
+			      struct cxl_mbox_cmd *cmd)
 {
+	struct cxl_dev_state *cxlds = &mds->cxlds;
 	struct device *dev = cxlds->dev;
+	struct cxl_mockmem_data *mdata = dev_get_drvdata(dev);
 	int rc = -EIO;
 
 	switch (cmd->opcode) {
···
 		rc = mock_gsl(cmd);
 		break;
 	case CXL_MBOX_OP_GET_LOG:
-		rc = mock_get_log(cxlds, cmd);
+		rc = mock_get_log(mds, cmd);
 		break;
 	case CXL_MBOX_OP_IDENTIFY:
 		if (cxlds->rcd)
-			rc = mock_rcd_id(cxlds, cmd);
+			rc = mock_rcd_id(cmd);
 		else
-			rc = mock_id(cxlds, cmd);
+			rc = mock_id(cmd);
 		break;
 	case CXL_MBOX_OP_GET_LSA:
-		rc = mock_get_lsa(cxlds, cmd);
+		rc = mock_get_lsa(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_GET_PARTITION_INFO:
-		rc = mock_partition_info(cxlds, cmd);
+		rc = mock_partition_info(cmd);
 		break;
 	case CXL_MBOX_OP_GET_EVENT_RECORD:
-		rc = mock_get_event(cxlds, cmd);
+		rc = mock_get_event(dev, cmd);
 		break;
 	case CXL_MBOX_OP_CLEAR_EVENT_RECORD:
-		rc = mock_clear_event(cxlds, cmd);
+		rc = mock_clear_event(dev, cmd);
 		break;
 	case CXL_MBOX_OP_SET_LSA:
-		rc = mock_set_lsa(cxlds, cmd);
+		rc = mock_set_lsa(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_GET_HEALTH_INFO:
-		rc = mock_health_info(cxlds, cmd);
+		rc = mock_health_info(cmd);
 		break;
 	case CXL_MBOX_OP_SANITIZE:
-		rc = mock_sanitize(cxlds, cmd);
+		rc = mock_sanitize(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_SECURE_ERASE:
-		rc = mock_secure_erase(cxlds, cmd);
+		rc = mock_secure_erase(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_GET_SECURITY_STATE:
-		rc = mock_get_security_state(cxlds, cmd);
+		rc = mock_get_security_state(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_SET_PASSPHRASE:
-		rc = mock_set_passphrase(cxlds, cmd);
+		rc = mock_set_passphrase(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_DISABLE_PASSPHRASE:
-		rc = mock_disable_passphrase(cxlds, cmd);
+		rc = mock_disable_passphrase(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_FREEZE_SECURITY:
-		rc = mock_freeze_security(cxlds, cmd);
+		rc = mock_freeze_security(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_UNLOCK:
-		rc = mock_unlock_security(cxlds, cmd);
+		rc = mock_unlock_security(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_PASSPHRASE_SECURE_ERASE:
-		rc = mock_passphrase_secure_erase(cxlds, cmd);
+		rc = mock_passphrase_secure_erase(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_GET_POISON:
 		rc = mock_get_poison(cxlds, cmd);
···
 		rc = mock_clear_poison(cxlds, cmd);
 		break;
 	case CXL_MBOX_OP_GET_FW_INFO:
-		rc = mock_fw_info(cxlds, cmd);
+		rc = mock_fw_info(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_TRANSFER_FW:
-		rc = mock_transfer_fw(cxlds, cmd);
+		rc = mock_transfer_fw(mdata, cmd);
 		break;
 	case CXL_MBOX_OP_ACTIVATE_FW:
-		rc = mock_activate_fw(cxlds, cmd);
+		rc = mock_activate_fw(mdata, cmd);
 		break;
 	default:
 		break;
···
 {
 	struct device *dev = &pdev->dev;
 	struct cxl_memdev *cxlmd;
+	struct cxl_memdev_state *mds;
 	struct cxl_dev_state *cxlds;
 	struct cxl_mockmem_data *mdata;
 	int rc;
···
 	if (rc)
 		return rc;
 
-	cxlds = cxl_dev_state_create(dev);
-	if (IS_ERR(cxlds))
-		return PTR_ERR(cxlds);
+	mds = cxl_memdev_state_create(dev);
+	if (IS_ERR(mds))
+		return PTR_ERR(mds);
 
+	mds->mbox_send = cxl_mock_mbox_send;
+	mds->payload_size = SZ_4K;
+	mds->event.buf = (struct cxl_get_event_payload *) mdata->event_buf;
+
+	cxlds = &mds->cxlds;
 	cxlds->serial = pdev->id;
-	cxlds->mbox_send = cxl_mock_mbox_send;
-	cxlds->payload_size = SZ_4K;
-	cxlds->event.buf = (struct cxl_get_event_payload *) mdata->event_buf;
 	if (is_rcd(pdev)) {
 		cxlds->rcd = true;
 		cxlds->component_reg_phys = CXL_RESOURCE_NONE;
 	}
 
-	rc = cxl_enumerate_cmds(cxlds);
+	rc = cxl_enumerate_cmds(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_poison_state_init(cxlds);
+	rc = cxl_poison_state_init(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_set_timestamp(cxlds);
+	rc = cxl_set_timestamp(mds);
 	if (rc)
 		return rc;
 
 	cxlds->media_ready = true;
-	rc = cxl_dev_state_identify(cxlds);
+	rc = cxl_dev_state_identify(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_mem_create_range_info(cxlds);
+	rc = cxl_mem_create_range_info(mds);
 	if (rc)
 		return rc;
 
-	mdata->mes.cxlds = cxlds;
+	mdata->mes.mds = mds;
 	cxl_mock_add_event_logs(&mdata->mes);
 
 	cxlmd = devm_cxl_add_memdev(cxlds);
 	if (IS_ERR(cxlmd))
 		return PTR_ERR(cxlmd);
 
-	rc = cxl_memdev_setup_fw_upload(cxlds);
+	rc = cxl_memdev_setup_fw_upload(mds);
 	if (rc)
 		return rc;
 
-	cxl_mem_get_event_records(cxlds, CXLDEV_EVENT_STATUS_ALL);
+	cxl_mem_get_event_records(mds, CXLDEV_EVENT_STATUS_ALL);
 
 	return 0;
 }

tools/testing/cxl/test/mock.c

···
 }
 EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_setup_hdm, CXL);
 
-int __wrap_devm_cxl_enable_hdm(struct cxl_port *port, struct cxl_hdm *cxlhdm)
-{
-	int index, rc;
-	struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
-
-	if (ops && ops->is_mock_port(port->uport))
-		rc = 0;
-	else
-		rc = devm_cxl_enable_hdm(port, cxlhdm);
-	put_cxl_mock_ops(index);
-
-	return rc;
-}
-EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_enable_hdm, CXL);
-
 int __wrap_devm_cxl_add_passthrough_decoder(struct cxl_port *port)
 {
 	int rc, index;