disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/libnvdimm.h
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@@ -1,16 +1,8 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * libnvdimm - Non-volatile-memory Devices Subsystem
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  *
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  * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of version 2 of the GNU General Public License as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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  */
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 #ifndef __LIBNVDIMM_H__
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 #define __LIBNVDIMM_H__
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@@ -39,6 +31,14 @@
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 	NDD_UNARMED = 1,
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 	/* locked memory devices should not be accessed */
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 	NDD_LOCKED = 2,
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+	/* memory under security wipes should not be accessed */
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+	NDD_SECURITY_OVERWRITE = 3,
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+	/*  tracking whether or not there is a pending device reference */
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+	NDD_WORK_PENDING = 4,
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+	/* ignore / filter NSLABEL_FLAG_LOCAL for this DIMM, i.e. no aliasing */
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+	NDD_NOBLK = 5,
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+	/* dimm supports namespace labels */
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+	NDD_LABELING = 6,
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 	/* need to set a limit somewhere, but yes, this is likely overkill */
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 	ND_IOCTL_MAX_BUFLEN = SZ_4M,
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@@ -67,13 +67,6 @@
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 	DPA_RESOURCE_ADJUSTED = 1 << 0,
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 };
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69
 
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-extern struct attribute_group nvdimm_bus_attribute_group;
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-extern struct attribute_group nvdimm_attribute_group;
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-extern struct attribute_group nd_device_attribute_group;
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-extern struct attribute_group nd_numa_attribute_group;
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-extern struct attribute_group nd_region_attribute_group;
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-extern struct attribute_group nd_mapping_attribute_group;
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-
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 struct nvdimm;
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 struct nvdimm_bus_descriptor;
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 typedef int (*ndctl_fn)(struct nvdimm_bus_descriptor *nd_desc,
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@@ -83,15 +76,17 @@
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 struct device_node;
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 struct nvdimm_bus_descriptor {
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 	const struct attribute_group **attr_groups;
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-	unsigned long bus_dsm_mask;
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 	unsigned long cmd_mask;
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+	unsigned long dimm_family_mask;
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+	unsigned long bus_family_mask;
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 	struct module *module;
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 	char *provider_name;
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 	struct device_node *of_node;
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 	ndctl_fn ndctl;
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 	int (*flush_probe)(struct nvdimm_bus_descriptor *nd_desc);
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 	int (*clear_to_send)(struct nvdimm_bus_descriptor *nd_desc,
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-			struct nvdimm *nvdimm, unsigned int cmd);
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+			struct nvdimm *nvdimm, unsigned int cmd, void *data);
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+	const struct nvdimm_bus_fw_ops *fw_ops;
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 };
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 struct nd_cmd_desc {
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@@ -129,6 +124,7 @@
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 	void *provider_data;
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 	int num_lanes;
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 	int numa_node;
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+	int target_node;
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 	unsigned long flags;
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 	struct device_node *of_node;
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 	int (*flush)(struct nd_region *nd_region, struct bio *bio);
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@@ -161,6 +157,93 @@
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157
 
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 }
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+/*
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+ * Note that separate bits for locked + unlocked are defined so that
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+ * 'flags == 0' corresponds to an error / not-supported state.
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+ */
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+enum nvdimm_security_bits {
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+	NVDIMM_SECURITY_DISABLED,
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+	NVDIMM_SECURITY_UNLOCKED,
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+	NVDIMM_SECURITY_LOCKED,
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+	NVDIMM_SECURITY_FROZEN,
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+	NVDIMM_SECURITY_OVERWRITE,
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+};
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+
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+#define NVDIMM_PASSPHRASE_LEN		32
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+#define NVDIMM_KEY_DESC_LEN		22
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+
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+struct nvdimm_key_data {
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+	u8 data[NVDIMM_PASSPHRASE_LEN];
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+};
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+
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+enum nvdimm_passphrase_type {
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+	NVDIMM_USER,
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+	NVDIMM_MASTER,
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+};
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+
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+struct nvdimm_security_ops {
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+	unsigned long (*get_flags)(struct nvdimm *nvdimm,
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+			enum nvdimm_passphrase_type pass_type);
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+	int (*freeze)(struct nvdimm *nvdimm);
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+	int (*change_key)(struct nvdimm *nvdimm,
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+			const struct nvdimm_key_data *old_data,
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+			const struct nvdimm_key_data *new_data,
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+			enum nvdimm_passphrase_type pass_type);
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+	int (*unlock)(struct nvdimm *nvdimm,
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+			const struct nvdimm_key_data *key_data);
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+	int (*disable)(struct nvdimm *nvdimm,
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+			const struct nvdimm_key_data *key_data);
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+	int (*erase)(struct nvdimm *nvdimm,
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+			const struct nvdimm_key_data *key_data,
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+			enum nvdimm_passphrase_type pass_type);
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+	int (*overwrite)(struct nvdimm *nvdimm,
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+			const struct nvdimm_key_data *key_data);
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+	int (*query_overwrite)(struct nvdimm *nvdimm);
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+};
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+
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+enum nvdimm_fwa_state {
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+	NVDIMM_FWA_INVALID,
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+	NVDIMM_FWA_IDLE,
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+	NVDIMM_FWA_ARMED,
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+	NVDIMM_FWA_BUSY,
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+	NVDIMM_FWA_ARM_OVERFLOW,
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+};
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+
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+enum nvdimm_fwa_trigger {
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+	NVDIMM_FWA_ARM,
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+	NVDIMM_FWA_DISARM,
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+};
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+
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+enum nvdimm_fwa_capability {
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+	NVDIMM_FWA_CAP_INVALID,
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+	NVDIMM_FWA_CAP_NONE,
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+	NVDIMM_FWA_CAP_QUIESCE,
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+	NVDIMM_FWA_CAP_LIVE,
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+};
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+
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+enum nvdimm_fwa_result {
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+	NVDIMM_FWA_RESULT_INVALID,
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+	NVDIMM_FWA_RESULT_NONE,
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+	NVDIMM_FWA_RESULT_SUCCESS,
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+	NVDIMM_FWA_RESULT_NOTSTAGED,
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+	NVDIMM_FWA_RESULT_NEEDRESET,
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+	NVDIMM_FWA_RESULT_FAIL,
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+};
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+
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+struct nvdimm_bus_fw_ops {
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+	enum nvdimm_fwa_state (*activate_state)
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+		(struct nvdimm_bus_descriptor *nd_desc);
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+	enum nvdimm_fwa_capability (*capability)
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+		(struct nvdimm_bus_descriptor *nd_desc);
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+	int (*activate)(struct nvdimm_bus_descriptor *nd_desc);
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+};
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+
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+struct nvdimm_fw_ops {
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+	enum nvdimm_fwa_state (*activate_state)(struct nvdimm *nvdimm);
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+	enum nvdimm_fwa_result (*activate_result)(struct nvdimm *nvdimm);
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+	int (*arm)(struct nvdimm *nvdimm, enum nvdimm_fwa_trigger arg);
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+};
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+
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 void badrange_init(struct badrange *badrange);
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 int badrange_add(struct badrange *badrange, u64 addr, u64 length);
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 void badrange_forget(struct badrange *badrange, phys_addr_t start,
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@@ -171,6 +254,7 @@
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 		struct nvdimm_bus_descriptor *nfit_desc);
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 void nvdimm_bus_unregister(struct nvdimm_bus *nvdimm_bus);
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 struct nvdimm_bus *to_nvdimm_bus(struct device *dev);
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+struct nvdimm_bus *nvdimm_to_bus(struct nvdimm *nvdimm);
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 struct nvdimm *to_nvdimm(struct device *dev);
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 struct nd_region *to_nd_region(struct device *dev);
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 struct device *nd_region_dev(struct nd_region *nd_region);
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@@ -181,10 +265,21 @@
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 struct kobject *nvdimm_kobj(struct nvdimm *nvdimm);
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 unsigned long nvdimm_cmd_mask(struct nvdimm *nvdimm);
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 void *nvdimm_provider_data(struct nvdimm *nvdimm);
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-struct nvdimm *nvdimm_create(struct nvdimm_bus *nvdimm_bus, void *provider_data,
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-		const struct attribute_group **groups, unsigned long flags,
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-		unsigned long cmd_mask, int num_flush,
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-		struct resource *flush_wpq);
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+struct nvdimm *__nvdimm_create(struct nvdimm_bus *nvdimm_bus,
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+		void *provider_data, const struct attribute_group **groups,
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+		unsigned long flags, unsigned long cmd_mask, int num_flush,
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+		struct resource *flush_wpq, const char *dimm_id,
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+		const struct nvdimm_security_ops *sec_ops,
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+		const struct nvdimm_fw_ops *fw_ops);
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+static inline struct nvdimm *nvdimm_create(struct nvdimm_bus *nvdimm_bus,
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+		void *provider_data, const struct attribute_group **groups,
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+		unsigned long flags, unsigned long cmd_mask, int num_flush,
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+		struct resource *flush_wpq)
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+{
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+	return __nvdimm_create(nvdimm_bus, provider_data, groups, flags,
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+			cmd_mask, num_flush, flush_wpq, NULL, NULL, NULL);
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+}
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+
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 const struct nd_cmd_desc *nd_cmd_dimm_desc(int cmd);
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 const struct nd_cmd_desc *nd_cmd_bus_desc(int cmd);
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 u32 nd_cmd_in_size(struct nvdimm *nvdimm, int cmd,
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@@ -211,6 +306,17 @@
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 int generic_nvdimm_flush(struct nd_region *nd_region);
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 int nvdimm_has_flush(struct nd_region *nd_region);
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 int nvdimm_has_cache(struct nd_region *nd_region);
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+int nvdimm_in_overwrite(struct nvdimm *nvdimm);
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+bool is_nvdimm_sync(struct nd_region *nd_region);
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+
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+static inline int nvdimm_ctl(struct nvdimm *nvdimm, unsigned int cmd, void *buf,
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+		unsigned int buf_len, int *cmd_rc)
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+{
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+	struct nvdimm_bus *nvdimm_bus = nvdimm_to_bus(nvdimm);
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+	struct nvdimm_bus_descriptor *nd_desc = to_nd_desc(nvdimm_bus);
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+
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+	return nd_desc->ndctl(nd_desc, nvdimm, cmd, buf, buf_len, cmd_rc);
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+}
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 #ifdef CONFIG_ARCH_HAS_PMEM_API
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 #define ARCH_MEMREMAP_PMEM MEMREMAP_WB