// SPDX-License-Identifier: GPL-2.0 /* * Copyright © 2016 Intel Corporation * * Authors: * Scott Bauer <[email protected]> * Rafael Antognolli <[email protected]> */ #define pr_fmt(fmt) … #include <linux/delay.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/blkdev.h> #include <linux/slab.h> #include <linux/uaccess.h> #include <uapi/linux/sed-opal.h> #include <linux/sed-opal.h> #include <linux/sed-opal-key.h> #include <linux/string.h> #include <linux/kdev_t.h> #include <linux/key.h> #include <linux/key-type.h> #include <keys/user-type.h> #include "opal_proto.h" #define IO_BUFFER_LENGTH … #define MAX_TOKS … /* Number of bytes needed by cmd_finalize. */ #define CMD_FINALIZE_BYTES_NEEDED … static struct key *sed_opal_keyring; struct opal_step { … }; cont_fn; enum opal_atom_width { … }; /* * On the parsed response, we don't store again the toks that are already * stored in the response buffer. Instead, for each token, we just store a * pointer to the position in the buffer where the token starts, and the size * of the token in bytes. */ struct opal_resp_tok { … }; /* * From the response header it's not possible to know how many tokens there are * on the payload. So we hardcode that the maximum will be MAX_TOKS, and later * if we start dealing with messages that have more than that, we can increase * this number. This is done to avoid having to make two passes through the * response, the first one counting how many tokens we have and the second one * actually storing the positions. */ struct parsed_resp { … }; struct opal_dev { … }; static const u8 opaluid[][OPAL_UID_LENGTH] = …; /* * TCG Storage SSC Methods. * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 * Section: 6.3 Assigned UIDs */ static const u8 opalmethod[][OPAL_METHOD_LENGTH] = …; static int end_opal_session_error(struct opal_dev *dev); static int opal_discovery0_step(struct opal_dev *dev); struct opal_suspend_data { … }; /* * Derived from: * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 * Section: 5.1.5 Method Status Codes */ static const char * const opal_errors[] = …; static const char *opal_error_to_human(int error) { … } static void print_buffer(const u8 *ptr, u32 length) { … } /* * Allocate/update a SED Opal key and add it to the SED Opal keyring. */ static int update_sed_opal_key(const char *desc, u_char *key_data, int keylen) { … } /* * Read a SED Opal key from the SED Opal keyring. */ static int read_sed_opal_key(const char *key_name, u_char *buffer, int buflen) { … } static int opal_get_key(struct opal_dev *dev, struct opal_key *key) { … } static bool check_tper(const void *data) { … } static bool check_lcksuppt(const void *data) { … } static bool check_lckenabled(const void *data) { … } static bool check_locked(const void *data) { … } static bool check_mbrenabled(const void *data) { … } static bool check_mbrdone(const void *data) { … } static bool check_sum(const void *data) { … } static u16 get_comid_v100(const void *data) { … } static u16 get_comid_v200(const void *data) { … } static int opal_send_cmd(struct opal_dev *dev) { … } static int opal_recv_cmd(struct opal_dev *dev) { … } static int opal_recv_check(struct opal_dev *dev) { … } static int opal_send_recv(struct opal_dev *dev, cont_fn *cont) { … } static void check_geometry(struct opal_dev *dev, const void *data) { … } static int execute_step(struct opal_dev *dev, const struct opal_step *step, size_t stepIndex) { … } static int execute_steps(struct opal_dev *dev, const struct opal_step *steps, size_t n_steps) { … } static int opal_discovery0_end(struct opal_dev *dev, void *data) { … } static int opal_discovery0(struct opal_dev *dev, void *data) { … } static int opal_discovery0_step(struct opal_dev *dev) { … } static size_t remaining_size(struct opal_dev *cmd) { … } static bool can_add(int *err, struct opal_dev *cmd, size_t len) { … } static void add_token_u8(int *err, struct opal_dev *cmd, u8 tok) { … } static void add_short_atom_header(struct opal_dev *cmd, bool bytestring, bool has_sign, int len) { … } static void add_medium_atom_header(struct opal_dev *cmd, bool bytestring, bool has_sign, int len) { … } static void add_token_u64(int *err, struct opal_dev *cmd, u64 number) { … } static u8 *add_bytestring_header(int *err, struct opal_dev *cmd, size_t len) { … } static void add_token_bytestring(int *err, struct opal_dev *cmd, const u8 *bytestring, size_t len) { … } static int build_locking_range(u8 *buffer, size_t length, u8 lr) { … } static int build_locking_user(u8 *buffer, size_t length, u8 lr) { … } static void set_comid(struct opal_dev *cmd, u16 comid) { … } static int cmd_finalize(struct opal_dev *cmd, u32 hsn, u32 tsn) { … } static const struct opal_resp_tok *response_get_token( const struct parsed_resp *resp, int n) { … } static ssize_t response_parse_tiny(struct opal_resp_tok *tok, const u8 *pos) { … } static ssize_t response_parse_short(struct opal_resp_tok *tok, const u8 *pos) { … } static ssize_t response_parse_medium(struct opal_resp_tok *tok, const u8 *pos) { … } static ssize_t response_parse_long(struct opal_resp_tok *tok, const u8 *pos) { … } static ssize_t response_parse_token(struct opal_resp_tok *tok, const u8 *pos) { … } static int response_parse(const u8 *buf, size_t length, struct parsed_resp *resp) { … } static size_t response_get_string(const struct parsed_resp *resp, int n, const char **store) { … } static u64 response_get_u64(const struct parsed_resp *resp, int n) { … } static bool response_token_matches(const struct opal_resp_tok *token, u8 match) { … } static u8 response_status(const struct parsed_resp *resp) { … } /* Parses and checks for errors */ static int parse_and_check_status(struct opal_dev *dev) { … } static void clear_opal_cmd(struct opal_dev *dev) { … } static int cmd_start(struct opal_dev *dev, const u8 *uid, const u8 *method) { … } static int start_opal_session_cont(struct opal_dev *dev) { … } static void add_suspend_info(struct opal_dev *dev, struct opal_suspend_data *sus) { … } static int end_session_cont(struct opal_dev *dev) { … } static int finalize_and_send(struct opal_dev *dev, cont_fn cont) { … } static int generic_get_columns(struct opal_dev *dev, const u8 *table, u64 start_column, u64 end_column) { … } /* * request @column from table @table on device @dev. On success, the column * data will be available in dev->resp->tok[4] */ static int generic_get_column(struct opal_dev *dev, const u8 *table, u64 column) { … } /* * see TCG SAS 5.3.2.3 for a description of the available columns * * the result is provided in dev->resp->tok[4] */ static int generic_get_table_info(struct opal_dev *dev, const u8 *table_uid, u64 column) { … } static int gen_key(struct opal_dev *dev, void *data) { … } static int get_active_key_cont(struct opal_dev *dev) { … } static int get_active_key(struct opal_dev *dev, void *data) { … } static int generic_table_write_data(struct opal_dev *dev, const u64 data, u64 offset, u64 size, const u8 *uid) { … } static int generic_lr_enable_disable(struct opal_dev *dev, u8 *uid, bool rle, bool wle, bool rl, bool wl) { … } static inline int enable_global_lr(struct opal_dev *dev, u8 *uid, struct opal_user_lr_setup *setup) { … } static int setup_locking_range(struct opal_dev *dev, void *data) { … } static int response_get_column(const struct parsed_resp *resp, int *iter, u8 column, u64 *value) { … } static int locking_range_status(struct opal_dev *dev, void *data) { … } static int start_generic_opal_session(struct opal_dev *dev, enum opal_uid auth, enum opal_uid sp_type, const char *key, u8 key_len) { … } static int start_anybodyASP_opal_session(struct opal_dev *dev, void *data) { … } static int start_SIDASP_opal_session(struct opal_dev *dev, void *data) { … } static int start_admin1LSP_opal_session(struct opal_dev *dev, void *data) { … } static int start_PSID_opal_session(struct opal_dev *dev, void *data) { … } static int start_auth_opal_session(struct opal_dev *dev, void *data) { … } static int revert_tper(struct opal_dev *dev, void *data) { … } static int internal_activate_user(struct opal_dev *dev, void *data) { … } static int revert_lsp(struct opal_dev *dev, void *data) { … } static int erase_locking_range(struct opal_dev *dev, void *data) { … } static int set_mbr_done(struct opal_dev *dev, void *data) { … } static int set_mbr_enable_disable(struct opal_dev *dev, void *data) { … } static int write_shadow_mbr(struct opal_dev *dev, void *data) { … } static int generic_pw_cmd(u8 *key, size_t key_len, u8 *cpin_uid, struct opal_dev *dev) { … } static int set_new_pw(struct opal_dev *dev, void *data) { … } static int set_sid_cpin_pin(struct opal_dev *dev, void *data) { … } static void add_authority_object_ref(int *err, struct opal_dev *dev, const u8 *uid, size_t uid_len) { … } static void add_boolean_object_ref(int *err, struct opal_dev *dev, u8 boolean_op) { … } static int set_lr_boolean_ace(struct opal_dev *dev, unsigned int opal_uid, u8 lr, const u8 *users, size_t users_len) { … } static int add_user_to_lr(struct opal_dev *dev, void *data) { … } static int add_user_to_lr_ace(struct opal_dev *dev, void *data) { … } static int lock_unlock_locking_range(struct opal_dev *dev, void *data) { … } static int lock_unlock_locking_range_sum(struct opal_dev *dev, void *data) { … } static int activate_lsp(struct opal_dev *dev, void *data) { … } /* Determine if we're in the Manufactured Inactive or Active state */ static int get_lsp_lifecycle(struct opal_dev *dev, void *data) { … } static int get_msid_cpin_pin(struct opal_dev *dev, void *data) { … } static int write_table_data(struct opal_dev *dev, void *data) { … } static int read_table_data_cont(struct opal_dev *dev) { … } /* * IO_BUFFER_LENGTH = 2048 * sizeof(header) = 56 * No. of Token Bytes in the Response = 11 * MAX size of data that can be carried in response buffer * at a time is : 2048 - (56 + 11) = 1981 = 0x7BD. */ #define OPAL_MAX_READ_TABLE … static int read_table_data(struct opal_dev *dev, void *data) { … } static int end_opal_session(struct opal_dev *dev, void *data) { … } static int end_opal_session_error(struct opal_dev *dev) { … } static inline void setup_opal_dev(struct opal_dev *dev) { … } static int check_opal_support(struct opal_dev *dev) { … } static void clean_opal_dev(struct opal_dev *dev) { … } void free_opal_dev(struct opal_dev *dev) { … } EXPORT_SYMBOL(…); struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv) { … } EXPORT_SYMBOL(…); static int opal_secure_erase_locking_range(struct opal_dev *dev, struct opal_session_info *opal_session) { … } static int opal_get_discv(struct opal_dev *dev, struct opal_discovery *discv) { … } static int opal_revertlsp(struct opal_dev *dev, struct opal_revert_lsp *rev) { … } static int opal_erase_locking_range(struct opal_dev *dev, struct opal_session_info *opal_session) { … } static int opal_enable_disable_shadow_mbr(struct opal_dev *dev, struct opal_mbr_data *opal_mbr) { … } static int opal_set_mbr_done(struct opal_dev *dev, struct opal_mbr_done *mbr_done) { … } static int opal_write_shadow_mbr(struct opal_dev *dev, struct opal_shadow_mbr *info) { … } static int opal_save(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) { … } static int opal_add_user_to_lr(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) { … } static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal, bool psid) { … } static int __opal_lock_unlock(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) { … } static int __opal_set_mbr_done(struct opal_dev *dev, struct opal_key *key) { … } static void opal_lock_check_for_saved_key(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) { … } static int opal_lock_unlock(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) { … } static int opal_take_ownership(struct opal_dev *dev, struct opal_key *opal) { … } static int opal_activate_lsp(struct opal_dev *dev, struct opal_lr_act *opal_lr_act) { … } static int opal_setup_locking_range(struct opal_dev *dev, struct opal_user_lr_setup *opal_lrs) { … } static int opal_locking_range_status(struct opal_dev *dev, struct opal_lr_status *opal_lrst, void __user *data) { … } static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw) { … } static int opal_activate_user(struct opal_dev *dev, struct opal_session_info *opal_session) { … } bool opal_unlock_from_suspend(struct opal_dev *dev) { … } EXPORT_SYMBOL(…); static int opal_read_table(struct opal_dev *dev, struct opal_read_write_table *rw_tbl) { … } static int opal_write_table(struct opal_dev *dev, struct opal_read_write_table *rw_tbl) { … } static int opal_generic_read_write_table(struct opal_dev *dev, struct opal_read_write_table *rw_tbl) { … } static int opal_get_status(struct opal_dev *dev, void __user *data) { … } static int opal_get_geometry(struct opal_dev *dev, void __user *data) { … } int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg) { … } EXPORT_SYMBOL_GPL(…); static int __init sed_opal_init(void) { … } late_initcall(sed_opal_init);
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