Gan likun / mbed-dev

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hal/storage_abstraction/Driver_Storage.h@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

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ganlikun 0:13413ea9a877 1
ganlikun 0:13413ea9a877 2 /** \addtogroup hal */
ganlikun 0:13413ea9a877 3 /** @{*/
ganlikun 0:13413ea9a877 4 /*
ganlikun 0:13413ea9a877 5 * Copyright (c) 2006-2016, ARM Limited, All Rights Reserved
ganlikun 0:13413ea9a877 6 * SPDX-License-Identifier: Apache-2.0
ganlikun 0:13413ea9a877 7 *
ganlikun 0:13413ea9a877 8 * Licensed under the Apache License, Version 2.0 (the "License"); you may
ganlikun 0:13413ea9a877 9 * not use this file except in compliance with the License.
ganlikun 0:13413ea9a877 10 * You may obtain a copy of the License at
ganlikun 0:13413ea9a877 11 *
ganlikun 0:13413ea9a877 12 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:13413ea9a877 13 *
ganlikun 0:13413ea9a877 14 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:13413ea9a877 15 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
ganlikun 0:13413ea9a877 16 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:13413ea9a877 17 * See the License for the specific language governing permissions and
ganlikun 0:13413ea9a877 18 * limitations under the License.
ganlikun 0:13413ea9a877 19 */
ganlikun 0:13413ea9a877 20
ganlikun 0:13413ea9a877 21 #ifndef __DRIVER_STORAGE_H
ganlikun 0:13413ea9a877 22 #define __DRIVER_STORAGE_H
ganlikun 0:13413ea9a877 23
ganlikun 0:13413ea9a877 24 #include <stdint.h>
ganlikun 0:13413ea9a877 25
ganlikun 0:13413ea9a877 26 /****** This file has been deprecated since mbed-os-5.5 *****/
ganlikun 0:13413ea9a877 27
ganlikun 0:13413ea9a877 28 #ifdef __cplusplus
ganlikun 0:13413ea9a877 29 extern "C" {
ganlikun 0:13413ea9a877 30 #endif // __cplusplus
ganlikun 0:13413ea9a877 31
ganlikun 0:13413ea9a877 32 #include "Driver_Common.h"
ganlikun 0:13413ea9a877 33
ganlikun 0:13413ea9a877 34 #define ARM_STORAGE_API_VERSION ARM_DRIVER_VERSION_MAJOR_MINOR(1,00) /* API version */
ganlikun 0:13413ea9a877 35
ganlikun 0:13413ea9a877 36
ganlikun 0:13413ea9a877 37 #define _ARM_Driver_Storage_(n) Driver_Storage##n
ganlikun 0:13413ea9a877 38 #define ARM_Driver_Storage_(n) _ARM_Driver_Storage_(n)
ganlikun 0:13413ea9a877 39
ganlikun 0:13413ea9a877 40 #define ARM_STORAGE_INVALID_OFFSET (0xFFFFFFFFFFFFFFFFULL) ///< Invalid address (relative to a storage controller's
ganlikun 0:13413ea9a877 41 ///< address space). A storage block may never start at this address.
ganlikun 0:13413ea9a877 42
ganlikun 0:13413ea9a877 43 #define ARM_STORAGE_INVALID_ADDRESS (0xFFFFFFFFUL) ///< Invalid address within the processor's memory address space.
ganlikun 0:13413ea9a877 44 ///< Refer to memory-mapped storage, i.e. < \ref ARM_DRIVER_STORAGE::ResolveAddress().
ganlikun 0:13413ea9a877 45
ganlikun 0:13413ea9a877 46 /****** Storage specific error codes *****/
ganlikun 0:13413ea9a877 47 #define ARM_STORAGE_ERROR_NOT_ERASABLE (ARM_DRIVER_ERROR_SPECIFIC - 1) ///< Part (or all) of the range provided to Erase() isn't erasable.
ganlikun 0:13413ea9a877 48 #define ARM_STORAGE_ERROR_NOT_PROGRAMMABLE (ARM_DRIVER_ERROR_SPECIFIC - 2) ///< Part (or all) of the range provided to ProgramData() isn't programmable.
ganlikun 0:13413ea9a877 49 #define ARM_STORAGE_ERROR_PROTECTED (ARM_DRIVER_ERROR_SPECIFIC - 3) ///< Part (or all) of the range to Erase() or ProgramData() is protected.
ganlikun 0:13413ea9a877 50 #define ARM_STORAGE_ERROR_RUNTIME_OR_INTEGRITY_FAILURE (ARM_DRIVER_ERROR_SPECIFIC - 4) ///< Runtime or sanity-check failure.
ganlikun 0:13413ea9a877 51
ganlikun 0:13413ea9a877 52 /**
ganlikun 0:13413ea9a877 53 * \brief Attributes of the storage range within a storage block.
ganlikun 0:13413ea9a877 54 */
ganlikun 0:13413ea9a877 55 typedef struct _ARM_STORAGE_BLOCK_ATTRIBUTES {
ganlikun 0:13413ea9a877 56 uint32_t erasable : 1; ///< Erasing blocks is permitted with a minimum granularity of 'erase_unit'.
ganlikun 0:13413ea9a877 57 ///< @note: if 'erasable' is 0--i.e. the 'erase' operation isn't available--then
ganlikun 0:13413ea9a877 58 ///< 'erase_unit' (see below) is immaterial and should be 0.
ganlikun 0:13413ea9a877 59 uint32_t programmable : 1; ///< Writing to ranges is permitted with a minimum granularity of 'program_unit'.
ganlikun 0:13413ea9a877 60 ///< Writes are typically achieved through the ProgramData operation (following an erase);
ganlikun 0:13413ea9a877 61 ///< if storage isn't erasable (see 'erasable' above) but is memory-mapped
ganlikun 0:13413ea9a877 62 ///< (i.e. 'memory_mapped'), it can be written directly using memory-store operations.
ganlikun 0:13413ea9a877 63 uint32_t executable : 1; ///< This storage block can hold program data; the processor can fetch and execute code
ganlikun 0:13413ea9a877 64 ///< sourced from it. Often this is accompanied with the device being 'memory_mapped' (see \ref ARM_STORAGE_INFO).
ganlikun 0:13413ea9a877 65 uint32_t protectable : 1; ///< The entire block can be protected from program and erase operations. Once protection
ganlikun 0:13413ea9a877 66 ///< is enabled for a block, its 'erasable' and 'programmable' bits are turned off.
ganlikun 0:13413ea9a877 67 uint32_t reserved : 28;
ganlikun 0:13413ea9a877 68 uint32_t erase_unit; ///< Minimum erase size in bytes.
ganlikun 0:13413ea9a877 69 ///< The offset of the start of the erase-range should also be aligned with this value.
ganlikun 0:13413ea9a877 70 ///< Applicable if the 'erasable' attribute is set for the block.
ganlikun 0:13413ea9a877 71 ///< @note: if 'erasable' (see above) is 0--i.e. the 'erase' operation isn't available--then
ganlikun 0:13413ea9a877 72 ///< 'erase_unit' is immaterial and should be 0.
ganlikun 0:13413ea9a877 73 uint32_t protection_unit; ///< Minimum protectable size in bytes. Applicable if the 'protectable'
ganlikun 0:13413ea9a877 74 ///< attribute is set for the block. This should be a divisor of the block's size. A
ganlikun 0:13413ea9a877 75 ///< block can be considered to be made up of consecutive, individually-protectable fragments.
ganlikun 0:13413ea9a877 76 } ARM_STORAGE_BLOCK_ATTRIBUTES;
ganlikun 0:13413ea9a877 77
ganlikun 0:13413ea9a877 78 /**
ganlikun 0:13413ea9a877 79 * \brief A storage block is a range of memory with uniform attributes. Storage blocks
ganlikun 0:13413ea9a877 80 * combine to make up the address map of a storage controller.
ganlikun 0:13413ea9a877 81 */
ganlikun 0:13413ea9a877 82 typedef struct _ARM_STORAGE_BLOCK {
ganlikun 0:13413ea9a877 83 uint64_t addr; ///< This is the start address of the storage block. It is
ganlikun 0:13413ea9a877 84 ///< expressed as an offset from the start of the storage map
ganlikun 0:13413ea9a877 85 ///< maintained by the owning storage controller.
ganlikun 0:13413ea9a877 86 uint64_t size; ///< This is the size of the storage block, in units of bytes.
ganlikun 0:13413ea9a877 87 ///< Together with addr, it describes a range [addr, addr+size).
ganlikun 0:13413ea9a877 88 ARM_STORAGE_BLOCK_ATTRIBUTES attributes; ///< Attributes for this block.
ganlikun 0:13413ea9a877 89 } ARM_STORAGE_BLOCK;
ganlikun 0:13413ea9a877 90
ganlikun 0:13413ea9a877 91 /**
ganlikun 0:13413ea9a877 92 * The check for a valid ARM_STORAGE_BLOCK.
ganlikun 0:13413ea9a877 93 */
ganlikun 0:13413ea9a877 94 #define ARM_STORAGE_VALID_BLOCK(BLK) (((BLK)->addr != ARM_STORAGE_INVALID_OFFSET) && ((BLK)->size != 0))
ganlikun 0:13413ea9a877 95
ganlikun 0:13413ea9a877 96 /**
ganlikun 0:13413ea9a877 97 * \brief Values for encoding storage memory-types with respect to programmability.
ganlikun 0:13413ea9a877 98 *
ganlikun 0:13413ea9a877 99 * Please ensure that the maximum of the following memory types doesn't exceed 16; we
ganlikun 0:13413ea9a877 100 * encode this in a 4-bit field within ARM_STORAGE_INFO::programmability.
ganlikun 0:13413ea9a877 101 */
ganlikun 0:13413ea9a877 102 #define ARM_STORAGE_PROGRAMMABILITY_RAM (0x0)
ganlikun 0:13413ea9a877 103 #define ARM_STORAGE_PROGRAMMABILITY_ROM (0x1) ///< Read-only memory.
ganlikun 0:13413ea9a877 104 #define ARM_STORAGE_PROGRAMMABILITY_WORM (0x2) ///< write-once-read-only-memory (WORM).
ganlikun 0:13413ea9a877 105 #define ARM_STORAGE_PROGRAMMABILITY_ERASABLE (0x3) ///< re-programmable based on erase. Supports multiple writes.
ganlikun 0:13413ea9a877 106
ganlikun 0:13413ea9a877 107 /**
ganlikun 0:13413ea9a877 108 * Values for encoding data-retention levels for storage blocks.
ganlikun 0:13413ea9a877 109 *
ganlikun 0:13413ea9a877 110 * Please ensure that the maximum of the following retention types doesn't exceed 16; we
ganlikun 0:13413ea9a877 111 * encode this in a 4-bit field within ARM_STORAGE_INFO::retention_level.
ganlikun 0:13413ea9a877 112 */
ganlikun 0:13413ea9a877 113 #define ARM_RETENTION_WHILE_DEVICE_ACTIVE (0x0) ///< Data is retained only during device activity.
ganlikun 0:13413ea9a877 114 #define ARM_RETENTION_ACROSS_SLEEP (0x1) ///< Data is retained across processor sleep.
ganlikun 0:13413ea9a877 115 #define ARM_RETENTION_ACROSS_DEEP_SLEEP (0x2) ///< Data is retained across processor deep-sleep.
ganlikun 0:13413ea9a877 116 #define ARM_RETENTION_BATTERY_BACKED (0x3) ///< Data is battery-backed. Device can be powered off.
ganlikun 0:13413ea9a877 117 #define ARM_RETENTION_NVM (0x4) ///< Data is retained in non-volatile memory.
ganlikun 0:13413ea9a877 118
ganlikun 0:13413ea9a877 119 /**
ganlikun 0:13413ea9a877 120 * Device Data Security Protection Features. Applicable mostly to EXTERNAL_NVM.
ganlikun 0:13413ea9a877 121 */
ganlikun 0:13413ea9a877 122 typedef struct _ARM_STORAGE_SECURITY_FEATURES {
ganlikun 0:13413ea9a877 123 uint32_t acls : 1; ///< Protection against internal software attacks using ACLs.
ganlikun 0:13413ea9a877 124 uint32_t rollback_protection : 1; ///< Roll-back protection. Set to true if the creator of the storage
ganlikun 0:13413ea9a877 125 ///< can ensure that an external attacker can't force an
ganlikun 0:13413ea9a877 126 ///< older firmware to run or to revert back to a previous state.
ganlikun 0:13413ea9a877 127 uint32_t tamper_proof : 1; ///< Tamper-proof memory (will be deleted on tamper-attempts using board level or chip level sensors).
ganlikun 0:13413ea9a877 128 uint32_t internal_flash : 1; ///< Internal flash.
ganlikun 0:13413ea9a877 129 uint32_t reserved1 : 12;
ganlikun 0:13413ea9a877 130
ganlikun 0:13413ea9a877 131 /**
ganlikun 0:13413ea9a877 132 * Encode support for hardening against various classes of attacks.
ganlikun 0:13413ea9a877 133 */
ganlikun 0:13413ea9a877 134 uint32_t software_attacks : 1; ///< device software (malware running on the device).
ganlikun 0:13413ea9a877 135 uint32_t board_level_attacks : 1; ///< board level attacks (debug probes, copy protection fuses.)
ganlikun 0:13413ea9a877 136 uint32_t chip_level_attacks : 1; ///< chip level attacks (tamper-protection).
ganlikun 0:13413ea9a877 137 uint32_t side_channel_attacks : 1; ///< side channel attacks.
ganlikun 0:13413ea9a877 138 uint32_t reserved2 : 12;
ganlikun 0:13413ea9a877 139 } ARM_STORAGE_SECURITY_FEATURES;
ganlikun 0:13413ea9a877 140
ganlikun 0:13413ea9a877 141 #define ARM_STORAGE_PROGRAM_CYCLES_INFINITE (0UL) /**< Infinite or unknown endurance for reprogramming. */
ganlikun 0:13413ea9a877 142
ganlikun 0:13413ea9a877 143 /**
ganlikun 0:13413ea9a877 144 * \brief Storage information. This contains device-metadata. It is the return
ganlikun 0:13413ea9a877 145 * value from calling GetInfo() on the storage driver.
ganlikun 0:13413ea9a877 146 *
ganlikun 0:13413ea9a877 147 * \details These fields serve a different purpose than the ones contained in
ganlikun 0:13413ea9a877 148 * \ref ARM_STORAGE_CAPABILITIES, which is another structure containing
ganlikun 0:13413ea9a877 149 * device-level metadata. ARM_STORAGE_CAPABILITIES describes the API
ganlikun 0:13413ea9a877 150 * capabilities, whereas ARM_STORAGE_INFO describes the device. Furthermore
ganlikun 0:13413ea9a877 151 * ARM_STORAGE_CAPABILITIES fits within a single word, and is designed to be
ganlikun 0:13413ea9a877 152 * passed around by value; ARM_STORAGE_INFO, on the other hand, contains
ganlikun 0:13413ea9a877 153 * metadata which doesn't fit into a single word and requires the use of
ganlikun 0:13413ea9a877 154 * pointers to be moved around.
ganlikun 0:13413ea9a877 155 */
ganlikun 0:13413ea9a877 156 typedef struct _ARM_STORAGE_INFO {
ganlikun 0:13413ea9a877 157 uint64_t total_storage; ///< Total available storage, in bytes.
ganlikun 0:13413ea9a877 158 uint32_t program_unit; ///< Minimum programming size in bytes.
ganlikun 0:13413ea9a877 159 ///< The offset of the start of the program-range should also be aligned with this value.
ganlikun 0:13413ea9a877 160 ///< Applicable only if the 'programmable' attribute is set for a block.
ganlikun 0:13413ea9a877 161 ///< @note: setting program_unit to 0 has the effect of disabling the size and alignment
ganlikun 0:13413ea9a877 162 ///< restrictions (setting it to 1 also has the same effect).
ganlikun 0:13413ea9a877 163 uint32_t optimal_program_unit; ///< Optimal programming page-size in bytes. Some storage controllers
ganlikun 0:13413ea9a877 164 ///< have internal buffers into which to receive data. Writing in chunks of
ganlikun 0:13413ea9a877 165 ///< 'optimal_program_unit' would achieve maximum programming speed.
ganlikun 0:13413ea9a877 166 ///< Applicable only if the 'programmable' attribute is set for the underlying block(s).
ganlikun 0:13413ea9a877 167 uint32_t program_cycles; ///< A measure of endurance for reprogramming.
ganlikun 0:13413ea9a877 168 ///< Use ARM_STORAGE_PROGRAM_CYCLES_INFINITE for infinite or unknown endurance.
ganlikun 0:13413ea9a877 169 uint32_t erased_value : 1; ///< Contents of erased memory (usually 1 to indicate erased bytes with state 0xFF).
ganlikun 0:13413ea9a877 170 uint32_t memory_mapped : 1; ///< This storage device has a mapping onto the processor's memory address space.
ganlikun 0:13413ea9a877 171 ///< @note: For a memory-mapped block which isn't erasable but is programmable (i.e. if
ganlikun 0:13413ea9a877 172 ///< 'erasable' is set to 0, but 'programmable' is 1), writes should be possible directly to
ganlikun 0:13413ea9a877 173 ///< the memory-mapped storage without going through the ProgramData operation.
ganlikun 0:13413ea9a877 174 uint32_t programmability : 4; ///< A value to indicate storage programmability.
ganlikun 0:13413ea9a877 175 uint32_t retention_level : 4;
ganlikun 0:13413ea9a877 176 uint32_t reserved : 22;
ganlikun 0:13413ea9a877 177 ARM_STORAGE_SECURITY_FEATURES security; ///< \ref ARM_STORAGE_SECURITY_FEATURES
ganlikun 0:13413ea9a877 178 } ARM_STORAGE_INFO;
ganlikun 0:13413ea9a877 179
ganlikun 0:13413ea9a877 180 /**
ganlikun 0:13413ea9a877 181 \brief Operating status of the storage controller.
ganlikun 0:13413ea9a877 182 */
ganlikun 0:13413ea9a877 183 typedef struct _ARM_STORAGE_STATUS {
ganlikun 0:13413ea9a877 184 uint32_t busy : 1; ///< Controller busy flag
ganlikun 0:13413ea9a877 185 uint32_t error : 1; ///< Read/Program/Erase error flag (cleared on start of next operation)
ganlikun 0:13413ea9a877 186 } ARM_STORAGE_STATUS;
ganlikun 0:13413ea9a877 187
ganlikun 0:13413ea9a877 188 /**
ganlikun 0:13413ea9a877 189 * \brief Storage Driver API Capabilities.
ganlikun 0:13413ea9a877 190 *
ganlikun 0:13413ea9a877 191 * This data structure is designed to fit within a single word so that it can be
ganlikun 0:13413ea9a877 192 * fetched cheaply using a call to driver->GetCapabilities().
ganlikun 0:13413ea9a877 193 */
ganlikun 0:13413ea9a877 194 typedef struct _ARM_STORAGE_CAPABILITIES {
ganlikun 0:13413ea9a877 195 uint32_t asynchronous_ops : 1; ///< Used to indicate if APIs like initialize,
ganlikun 0:13413ea9a877 196 ///< read, erase, program, etc. can operate in asynchronous mode.
ganlikun 0:13413ea9a877 197 ///< Setting this bit to 1 means that the driver is capable
ganlikun 0:13413ea9a877 198 ///< of launching asynchronous operations; command completion is
ganlikun 0:13413ea9a877 199 ///< signaled by the invocation of a completion callback. If
ganlikun 0:13413ea9a877 200 ///< set to 1, drivers may still complete asynchronous
ganlikun 0:13413ea9a877 201 ///< operations synchronously as necessary--in which case they
ganlikun 0:13413ea9a877 202 ///< return a positive error code to indicate synchronous completion.
ganlikun 0:13413ea9a877 203 uint32_t erase_all : 1; ///< Supports EraseAll operation.
ganlikun 0:13413ea9a877 204 uint32_t reserved : 30;
ganlikun 0:13413ea9a877 205 } ARM_STORAGE_CAPABILITIES;
ganlikun 0:13413ea9a877 206
ganlikun 0:13413ea9a877 207 /**
ganlikun 0:13413ea9a877 208 * Command opcodes for Storage. Completion callbacks use these codes to refer to
ganlikun 0:13413ea9a877 209 * completing commands. Refer to \ref ARM_Storage_Callback_t.
ganlikun 0:13413ea9a877 210 */
ganlikun 0:13413ea9a877 211 typedef enum _ARM_STORAGE_OPERATION {
ganlikun 0:13413ea9a877 212 ARM_STORAGE_OPERATION_GET_VERSION,
ganlikun 0:13413ea9a877 213 ARM_STORAGE_OPERATION_GET_CAPABILITIES,
ganlikun 0:13413ea9a877 214 ARM_STORAGE_OPERATION_INITIALIZE,
ganlikun 0:13413ea9a877 215 ARM_STORAGE_OPERATION_UNINITIALIZE,
ganlikun 0:13413ea9a877 216 ARM_STORAGE_OPERATION_POWER_CONTROL,
ganlikun 0:13413ea9a877 217 ARM_STORAGE_OPERATION_READ_DATA,
ganlikun 0:13413ea9a877 218 ARM_STORAGE_OPERATION_PROGRAM_DATA,
ganlikun 0:13413ea9a877 219 ARM_STORAGE_OPERATION_ERASE,
ganlikun 0:13413ea9a877 220 ARM_STORAGE_OPERATION_ERASE_ALL,
ganlikun 0:13413ea9a877 221 ARM_STORAGE_OPERATION_GET_STATUS,
ganlikun 0:13413ea9a877 222 ARM_STORAGE_OPERATION_GET_INFO,
ganlikun 0:13413ea9a877 223 ARM_STORAGE_OPERATION_RESOLVE_ADDRESS,
ganlikun 0:13413ea9a877 224 ARM_STORAGE_OPERATION_GET_NEXT_BLOCK,
ganlikun 0:13413ea9a877 225 ARM_STORAGE_OPERATION_GET_BLOCK
ganlikun 0:13413ea9a877 226 } ARM_STORAGE_OPERATION;
ganlikun 0:13413ea9a877 227
ganlikun 0:13413ea9a877 228 /**
ganlikun 0:13413ea9a877 229 * Declaration of the callback-type for command completion.
ganlikun 0:13413ea9a877 230 *
ganlikun 0:13413ea9a877 231 * @param [in] status
ganlikun 0:13413ea9a877 232 * A code to indicate the status of the completed operation. For data
ganlikun 0:13413ea9a877 233 * transfer operations, the status field is overloaded in case of
ganlikun 0:13413ea9a877 234 * success to return the count of items successfully transferred; this
ganlikun 0:13413ea9a877 235 * can be done safely because error codes are negative values.
ganlikun 0:13413ea9a877 236 *
ganlikun 0:13413ea9a877 237 * @param [in] operation
ganlikun 0:13413ea9a877 238 * The command op-code. This value isn't essential for the callback in
ganlikun 0:13413ea9a877 239 * the presence of the command instance-id, but it is expected that
ganlikun 0:13413ea9a877 240 * this information could be a quick and useful filter.
ganlikun 0:13413ea9a877 241 */
ganlikun 0:13413ea9a877 242 typedef void (*ARM_Storage_Callback_t)(int32_t status, ARM_STORAGE_OPERATION operation);
ganlikun 0:13413ea9a877 243
ganlikun 0:13413ea9a877 244 /**
ganlikun 0:13413ea9a877 245 * This is the set of operations constituting the Storage driver. Their
ganlikun 0:13413ea9a877 246 * implementation is platform-specific, and needs to be supplied by the
ganlikun 0:13413ea9a877 247 * porting effort.
ganlikun 0:13413ea9a877 248 *
ganlikun 0:13413ea9a877 249 * Some APIs within `ARM_DRIVER_STORAGE` will always operate synchronously:
ganlikun 0:13413ea9a877 250 * GetVersion, GetCapabilities, GetStatus, GetInfo, ResolveAddress,
ganlikun 0:13413ea9a877 251 * GetNextBlock, and GetBlock. This means that control returns to the caller
ganlikun 0:13413ea9a877 252 * with a relevant status code only after the completion of the operation (or
ganlikun 0:13413ea9a877 253 * the discovery of a failure condition).
ganlikun 0:13413ea9a877 254 *
ganlikun 0:13413ea9a877 255 * The remainder of the APIs: Initialize, Uninitialize, PowerControl, ReadData,
ganlikun 0:13413ea9a877 256 * ProgramData, Erase, EraseAll, can function asynchronously if the underlying
ganlikun 0:13413ea9a877 257 * controller supports it--i.e. if ARM_STORAGE_CAPABILITIES::asynchronous_ops is
ganlikun 0:13413ea9a877 258 * set. In the case of asynchronous operation, the invocation returns early
ganlikun 0:13413ea9a877 259 * (with ARM_DRIVER_OK) and results in a completion callback later. If
ganlikun 0:13413ea9a877 260 * ARM_STORAGE_CAPABILITIES::asynchronous_ops is not set, then all such APIs
ganlikun 0:13413ea9a877 261 * execute synchronously, and control returns to the caller with a status code
ganlikun 0:13413ea9a877 262 * only after the completion of the operation (or the discovery of a failure
ganlikun 0:13413ea9a877 263 * condition).
ganlikun 0:13413ea9a877 264 *
ganlikun 0:13413ea9a877 265 * If ARM_STORAGE_CAPABILITIES::asynchronous_ops is set, a storage driver may
ganlikun 0:13413ea9a877 266 * still choose to execute asynchronous operations in a synchronous manner. If
ganlikun 0:13413ea9a877 267 * so, the driver returns a positive value to indicate successful synchronous
ganlikun 0:13413ea9a877 268 * completion (or an error code in case of failure) and no further invocation of
ganlikun 0:13413ea9a877 269 * completion callback should be expected. The expected return value for
ganlikun 0:13413ea9a877 270 * synchronous completion of such asynchronous operations varies depending on
ganlikun 0:13413ea9a877 271 * the operation. For operations involving data access, it often equals the
ganlikun 0:13413ea9a877 272 * amount of data transferred or affected. For non data-transfer operations,
ganlikun 0:13413ea9a877 273 * such as EraseAll or Initialize, it is usually 1.
ganlikun 0:13413ea9a877 274 *
ganlikun 0:13413ea9a877 275 * Here's a code snippet to suggest how asynchronous APIs might be used by
ganlikun 0:13413ea9a877 276 * callers to handle both synchronous and asynchronous execution by the
ganlikun 0:13413ea9a877 277 * underlying storage driver:
ganlikun 0:13413ea9a877 278 * \code
ganlikun 0:13413ea9a877 279 * ASSERT(ARM_DRIVER_OK == 0); // this is a precondition; it doesn't need to be put in code
ganlikun 0:13413ea9a877 280 * int32_t returnValue = drv->asynchronousAPI(...);
ganlikun 0:13413ea9a877 281 * if (returnValue < ARM_DRIVER_OK) {
ganlikun 0:13413ea9a877 282 * // handle error.
ganlikun 0:13413ea9a877 283 * } else if (returnValue == ARM_DRIVER_OK) {
ganlikun 0:13413ea9a877 284 * ASSERT(drv->GetCapabilities().asynchronous_ops == 1);
ganlikun 0:13413ea9a877 285 * // handle early return from asynchronous execution; remainder of the work is done in the callback handler.
ganlikun 0:13413ea9a877 286 * } else {
ganlikun 0:13413ea9a877 287 * ASSERT(returnValue == EXPECTED_RETURN_VALUE_FOR_SYNCHRONOUS_COMPLETION);
ganlikun 0:13413ea9a877 288 * // handle synchronous completion.
ganlikun 0:13413ea9a877 289 * }
ganlikun 0:13413ea9a877 290 * \endcode
ganlikun 0:13413ea9a877 291 */
ganlikun 0:13413ea9a877 292 typedef struct _ARM_DRIVER_STORAGE {
ganlikun 0:13413ea9a877 293 /**
ganlikun 0:13413ea9a877 294 * \brief Get driver version.
ganlikun 0:13413ea9a877 295 *
ganlikun 0:13413ea9a877 296 * The function GetVersion() returns version information of the driver implementation in ARM_DRIVER_VERSION.
ganlikun 0:13413ea9a877 297 *
ganlikun 0:13413ea9a877 298 * - API version is the version of the CMSIS-Driver specification used to implement this driver.
ganlikun 0:13413ea9a877 299 * - Driver version is source code version of the actual driver implementation.
ganlikun 0:13413ea9a877 300 *
ganlikun 0:13413ea9a877 301 * Example:
ganlikun 0:13413ea9a877 302 * \code
ganlikun 0:13413ea9a877 303 * extern ARM_DRIVER_STORAGE *drv_info;
ganlikun 0:13413ea9a877 304 *
ganlikun 0:13413ea9a877 305 * void read_version (void) {
ganlikun 0:13413ea9a877 306 * ARM_DRIVER_VERSION version;
ganlikun 0:13413ea9a877 307 *
ganlikun 0:13413ea9a877 308 * version = drv_info->GetVersion ();
ganlikun 0:13413ea9a877 309 * if (version.api < 0x10A) { // requires at minimum API version 1.10 or higher
ganlikun 0:13413ea9a877 310 * // error handling
ganlikun 0:13413ea9a877 311 * return;
ganlikun 0:13413ea9a877 312 * }
ganlikun 0:13413ea9a877 313 * }
ganlikun 0:13413ea9a877 314 * \endcode
ganlikun 0:13413ea9a877 315 *
ganlikun 0:13413ea9a877 316 * @return \ref ARM_DRIVER_VERSION.
ganlikun 0:13413ea9a877 317 *
ganlikun 0:13413ea9a877 318 * @note This API returns synchronously--it does not result in an invocation
ganlikun 0:13413ea9a877 319 * of a completion callback.
ganlikun 0:13413ea9a877 320 *
ganlikun 0:13413ea9a877 321 * @note The function GetVersion() can be called any time to obtain the
ganlikun 0:13413ea9a877 322 * required information from the driver (even before initialization). It
ganlikun 0:13413ea9a877 323 * always returns the same information.
ganlikun 0:13413ea9a877 324 */
ganlikun 0:13413ea9a877 325 ARM_DRIVER_VERSION (*GetVersion)(void);
ganlikun 0:13413ea9a877 326
ganlikun 0:13413ea9a877 327 /**
ganlikun 0:13413ea9a877 328 * \brief Get driver capabilities.
ganlikun 0:13413ea9a877 329 *
ganlikun 0:13413ea9a877 330 * \details The function GetCapabilities() returns information about
ganlikun 0:13413ea9a877 331 * capabilities in this driver implementation. The data fields of the struct
ganlikun 0:13413ea9a877 332 * ARM_STORAGE_CAPABILITIES encode various capabilities, for example if the device
ganlikun 0:13413ea9a877 333 * is able to execute operations asynchronously.
ganlikun 0:13413ea9a877 334 *
ganlikun 0:13413ea9a877 335 * Example:
ganlikun 0:13413ea9a877 336 * \code
ganlikun 0:13413ea9a877 337 * extern ARM_DRIVER_STORAGE *drv_info;
ganlikun 0:13413ea9a877 338 *
ganlikun 0:13413ea9a877 339 * void read_capabilities (void) {
ganlikun 0:13413ea9a877 340 * ARM_STORAGE_CAPABILITIES drv_capabilities;
ganlikun 0:13413ea9a877 341 *
ganlikun 0:13413ea9a877 342 * drv_capabilities = drv_info->GetCapabilities ();
ganlikun 0:13413ea9a877 343 * // interrogate capabilities
ganlikun 0:13413ea9a877 344 *
ganlikun 0:13413ea9a877 345 * }
ganlikun 0:13413ea9a877 346 * \endcode
ganlikun 0:13413ea9a877 347 *
ganlikun 0:13413ea9a877 348 * @return \ref ARM_STORAGE_CAPABILITIES.
ganlikun 0:13413ea9a877 349 *
ganlikun 0:13413ea9a877 350 * @note This API returns synchronously--it does not result in an invocation
ganlikun 0:13413ea9a877 351 * of a completion callback.
ganlikun 0:13413ea9a877 352 *
ganlikun 0:13413ea9a877 353 * @note The function GetCapabilities() can be called any time to obtain the
ganlikun 0:13413ea9a877 354 * required information from the driver (even before initialization). It
ganlikun 0:13413ea9a877 355 * always returns the same information.
ganlikun 0:13413ea9a877 356 */
ganlikun 0:13413ea9a877 357 ARM_STORAGE_CAPABILITIES (*GetCapabilities)(void);
ganlikun 0:13413ea9a877 358
ganlikun 0:13413ea9a877 359 /**
ganlikun 0:13413ea9a877 360 * \brief Initialize the Storage Interface.
ganlikun 0:13413ea9a877 361 *
ganlikun 0:13413ea9a877 362 * The function Initialize is called when the middleware component starts
ganlikun 0:13413ea9a877 363 * operation. In addition to bringing the controller to a ready state,
ganlikun 0:13413ea9a877 364 * Initialize() receives a callback handler to be invoked upon completion of
ganlikun 0:13413ea9a877 365 * asynchronous operations.
ganlikun 0:13413ea9a877 366 *
ganlikun 0:13413ea9a877 367 * Initialize() needs to be called explicitly before
ganlikun 0:13413ea9a877 368 * powering the peripheral using PowerControl(), and before initiating other
ganlikun 0:13413ea9a877 369 * accesses to the storage controller.
ganlikun 0:13413ea9a877 370 *
ganlikun 0:13413ea9a877 371 * The function performs the following operations:
ganlikun 0:13413ea9a877 372 * - Initializes the resources needed for the Storage interface.
ganlikun 0:13413ea9a877 373 * - Registers the \ref ARM_Storage_Callback_t callback function.
ganlikun 0:13413ea9a877 374 *
ganlikun 0:13413ea9a877 375 * To start working with a peripheral the functions Initialize and PowerControl need to be called in this order:
ganlikun 0:13413ea9a877 376 * drv->Initialize (...); // Allocate I/O pins
ganlikun 0:13413ea9a877 377 * drv->PowerControl (ARM_POWER_FULL); // Power up peripheral, setup IRQ/DMA
ganlikun 0:13413ea9a877 378 *
ganlikun 0:13413ea9a877 379 * - Initialize() typically allocates the I/O resources (pins) for the
ganlikun 0:13413ea9a877 380 * peripheral. The function can be called multiple times; if the I/O resources
ganlikun 0:13413ea9a877 381 * are already initialized it performs no operation and just returns with
ganlikun 0:13413ea9a877 382 * ARM_DRIVER_OK.
ganlikun 0:13413ea9a877 383 *
ganlikun 0:13413ea9a877 384 * - PowerControl (ARM_POWER_FULL) sets the peripheral registers including
ganlikun 0:13413ea9a877 385 * interrupt (NVIC) and optionally DMA. The function can be called multiple
ganlikun 0:13413ea9a877 386 * times; if the registers are already set it performs no operation and just
ganlikun 0:13413ea9a877 387 * returns with ARM_DRIVER_OK.
ganlikun 0:13413ea9a877 388 *
ganlikun 0:13413ea9a877 389 * To stop working with a peripheral the functions PowerControl and Uninitialize need to be called in this order:
ganlikun 0:13413ea9a877 390 * drv->PowerControl (ARM_POWER_OFF); // Terminate any pending transfers, reset IRQ/DMA, power off peripheral
ganlikun 0:13413ea9a877 391 * drv->Uninitialize (...); // Release I/O pins
ganlikun 0:13413ea9a877 392 *
ganlikun 0:13413ea9a877 393 * The functions PowerControl and Uninitialize always execute and can be used
ganlikun 0:13413ea9a877 394 * to put the peripheral into a Safe State, for example after any data
ganlikun 0:13413ea9a877 395 * transmission errors. To restart the peripheral in an error condition,
ganlikun 0:13413ea9a877 396 * you should first execute the Stop Sequence and then the Start Sequence.
ganlikun 0:13413ea9a877 397 *
ganlikun 0:13413ea9a877 398 * @param [in] callback
ganlikun 0:13413ea9a877 399 * Caller-defined callback to be invoked upon command completion
ganlikun 0:13413ea9a877 400 * for asynchronous APIs (including the completion of
ganlikun 0:13413ea9a877 401 * initialization). Use a NULL pointer when no callback
ganlikun 0:13413ea9a877 402 * signals are required.
ganlikun 0:13413ea9a877 403 *
ganlikun 0:13413ea9a877 404 * @note This API may execute asynchronously if
ganlikun 0:13413ea9a877 405 * ARM_STORAGE_CAPABILITIES::asynchronous_ops is set. Asynchronous
ganlikun 0:13413ea9a877 406 * execution is optional even if 'asynchronous_ops' is set.
ganlikun 0:13413ea9a877 407 *
ganlikun 0:13413ea9a877 408 * @return If asynchronous activity is launched, an invocation returns
ganlikun 0:13413ea9a877 409 * ARM_DRIVER_OK, and the caller can expect to receive a callback in the
ganlikun 0:13413ea9a877 410 * future with a status value of ARM_DRIVER_OK or an error-code. In the
ganlikun 0:13413ea9a877 411 * case of synchronous execution, control returns after completion with a
ganlikun 0:13413ea9a877 412 * value of 1. Return values less than ARM_DRIVER_OK (0) signify errors.
ganlikun 0:13413ea9a877 413 */
ganlikun 0:13413ea9a877 414 int32_t (*Initialize)(ARM_Storage_Callback_t callback);
ganlikun 0:13413ea9a877 415
ganlikun 0:13413ea9a877 416 /**
ganlikun 0:13413ea9a877 417 * \brief De-initialize the Storage Interface.
ganlikun 0:13413ea9a877 418 *
ganlikun 0:13413ea9a877 419 * The function Uninitialize() de-initializes the resources of Storage interface.
ganlikun 0:13413ea9a877 420 *
ganlikun 0:13413ea9a877 421 * It is called when the middleware component stops operation, and wishes to
ganlikun 0:13413ea9a877 422 * release the software resources used by the interface.
ganlikun 0:13413ea9a877 423 *
ganlikun 0:13413ea9a877 424 * @note This API may execute asynchronously if
ganlikun 0:13413ea9a877 425 * ARM_STORAGE_CAPABILITIES::asynchronous_ops is set. Asynchronous
ganlikun 0:13413ea9a877 426 * execution is optional even if 'asynchronous_ops' is set.
ganlikun 0:13413ea9a877 427 *
ganlikun 0:13413ea9a877 428 * @return If asynchronous activity is launched, an invocation returns
ganlikun 0:13413ea9a877 429 * ARM_DRIVER_OK, and the caller can expect to receive a callback in the
ganlikun 0:13413ea9a877 430 * future with a status value of ARM_DRIVER_OK or an error-code. In the
ganlikun 0:13413ea9a877 431 * case of synchronous execution, control returns after completion with a
ganlikun 0:13413ea9a877 432 * value of 1. Return values less than ARM_DRIVER_OK (0) signify errors.
ganlikun 0:13413ea9a877 433 */
ganlikun 0:13413ea9a877 434 int32_t (*Uninitialize)(void);
ganlikun 0:13413ea9a877 435
ganlikun 0:13413ea9a877 436 /**
ganlikun 0:13413ea9a877 437 * \brief Control the Storage interface power.
ganlikun 0:13413ea9a877 438 *
ganlikun 0:13413ea9a877 439 * The function \b ARM_Storage_PowerControl operates the power modes of the Storage interface.
ganlikun 0:13413ea9a877 440 *
ganlikun 0:13413ea9a877 441 * To start working with a peripheral the functions Initialize and PowerControl need to be called in this order:
ganlikun 0:13413ea9a877 442 * drv->Initialize (...); // Allocate I/O pins
ganlikun 0:13413ea9a877 443 * drv->PowerControl (ARM_POWER_FULL); // Power up peripheral, setup IRQ/DMA
ganlikun 0:13413ea9a877 444 *
ganlikun 0:13413ea9a877 445 * - Initialize() typically allocates the I/O resources (pins) for the
ganlikun 0:13413ea9a877 446 * peripheral. The function can be called multiple times; if the I/O resources
ganlikun 0:13413ea9a877 447 * are already initialized it performs no operation and just returns with
ganlikun 0:13413ea9a877 448 * ARM_DRIVER_OK.
ganlikun 0:13413ea9a877 449 *
ganlikun 0:13413ea9a877 450 * - PowerControl (ARM_POWER_FULL) sets the peripheral registers including
ganlikun 0:13413ea9a877 451 * interrupt (NVIC) and optionally DMA. The function can be called multiple
ganlikun 0:13413ea9a877 452 * times; if the registers are already set it performs no operation and just
ganlikun 0:13413ea9a877 453 * returns with ARM_DRIVER_OK.
ganlikun 0:13413ea9a877 454 *
ganlikun 0:13413ea9a877 455 * To stop working with a peripheral the functions PowerControl and Uninitialize need to be called in this order:
ganlikun 0:13413ea9a877 456 *
ganlikun 0:13413ea9a877 457 * drv->PowerControl (ARM_POWER_OFF); // Terminate any pending transfers, reset IRQ/DMA, power off peripheral
ganlikun 0:13413ea9a877 458 * drv->Uninitialize (...); // Release I/O pins
ganlikun 0:13413ea9a877 459 *
ganlikun 0:13413ea9a877 460 * The functions PowerControl and Uninitialize always execute and can be used
ganlikun 0:13413ea9a877 461 * to put the peripheral into a Safe State, for example after any data
ganlikun 0:13413ea9a877 462 * transmission errors. To restart the peripheral in an error condition,
ganlikun 0:13413ea9a877 463 * you should first execute the Stop Sequence and then the Start Sequence.
ganlikun 0:13413ea9a877 464 *
ganlikun 0:13413ea9a877 465 * @param state
ganlikun 0:13413ea9a877 466 * \ref ARM_POWER_STATE. The target power-state for the storage controller.
ganlikun 0:13413ea9a877 467 * The parameter state can have the following values:
ganlikun 0:13413ea9a877 468 * - ARM_POWER_FULL : set-up peripheral for data transfers, enable interrupts
ganlikun 0:13413ea9a877 469 * (NVIC) and optionally DMA. Can be called multiple times. If the peripheral
ganlikun 0:13413ea9a877 470 * is already in this mode, then the function performs no operation and returns
ganlikun 0:13413ea9a877 471 * with ARM_DRIVER_OK.
ganlikun 0:13413ea9a877 472 * - ARM_POWER_LOW : may use power saving. Returns ARM_DRIVER_ERROR_UNSUPPORTED when not implemented.
ganlikun 0:13413ea9a877 473 * - ARM_POWER_OFF : terminates any pending data transfers, disables peripheral, disables related interrupts and DMA.
ganlikun 0:13413ea9a877 474 *
ganlikun 0:13413ea9a877 475 * @note This API may execute asynchronously if
ganlikun 0:13413ea9a877 476 * ARM_STORAGE_CAPABILITIES::asynchronous_ops is set. Asynchronous
ganlikun 0:13413ea9a877 477 * execution is optional even if 'asynchronous_ops' is set.
ganlikun 0:13413ea9a877 478 *
ganlikun 0:13413ea9a877 479 * @return If asynchronous activity is launched, an invocation returns
ganlikun 0:13413ea9a877 480 * ARM_DRIVER_OK, and the caller can expect to receive a callback in the
ganlikun 0:13413ea9a877 481 * future with a status value of ARM_DRIVER_OK or an error-code. In the
ganlikun 0:13413ea9a877 482 * case of synchronous execution, control returns after completion with a
ganlikun 0:13413ea9a877 483 * value of 1. Return values less than ARM_DRIVER_OK (0) signify errors.
ganlikun 0:13413ea9a877 484 */
ganlikun 0:13413ea9a877 485 int32_t (*PowerControl)(ARM_POWER_STATE state);
ganlikun 0:13413ea9a877 486
ganlikun 0:13413ea9a877 487 /**
ganlikun 0:13413ea9a877 488 * \brief read the contents of a given address range from the storage device.
ganlikun 0:13413ea9a877 489 *
ganlikun 0:13413ea9a877 490 * \details Read the contents of a range of storage memory into a buffer
ganlikun 0:13413ea9a877 491 * supplied by the caller. The buffer is owned by the caller and should
ganlikun 0:13413ea9a877 492 * remain accessible for the lifetime of this command.
ganlikun 0:13413ea9a877 493 *
ganlikun 0:13413ea9a877 494 * @param [in] addr
ganlikun 0:13413ea9a877 495 * This specifies the address from where to read data.
ganlikun 0:13413ea9a877 496 *
ganlikun 0:13413ea9a877 497 * @param [out] data
ganlikun 0:13413ea9a877 498 * The destination of the read operation. The buffer
ganlikun 0:13413ea9a877 499 * is owned by the caller and should remain accessible for the
ganlikun 0:13413ea9a877 500 * lifetime of this command.
ganlikun 0:13413ea9a877 501 *
ganlikun 0:13413ea9a877 502 * @param [in] size
ganlikun 0:13413ea9a877 503 * The number of bytes requested to read. The data buffer
ganlikun 0:13413ea9a877 504 * should be at least as large as this size.
ganlikun 0:13413ea9a877 505 *
ganlikun 0:13413ea9a877 506 * @note This API may execute asynchronously if
ganlikun 0:13413ea9a877 507 * ARM_STORAGE_CAPABILITIES::asynchronous_ops is set. Asynchronous
ganlikun 0:13413ea9a877 508 * execution is optional even if 'asynchronous_ops' is set.
ganlikun 0:13413ea9a877 509 *
ganlikun 0:13413ea9a877 510 * @return If asynchronous activity is launched, an invocation returns
ganlikun 0:13413ea9a877 511 * ARM_DRIVER_OK, and the caller can expect to receive a callback in the
ganlikun 0:13413ea9a877 512 * future with the number of successfully transferred bytes passed in as
ganlikun 0:13413ea9a877 513 * the 'status' parameter. In the case of synchronous execution, control
ganlikun 0:13413ea9a877 514 * returns after completion with a positive transfer-count. Return values
ganlikun 0:13413ea9a877 515 * less than ARM_DRIVER_OK (0) signify errors.
ganlikun 0:13413ea9a877 516 */
ganlikun 0:13413ea9a877 517 int32_t (*ReadData)(uint64_t addr, void *data, uint32_t size);
ganlikun 0:13413ea9a877 518
ganlikun 0:13413ea9a877 519 /**
ganlikun 0:13413ea9a877 520 * \brief program (write into) the contents of a given address range of the storage device.
ganlikun 0:13413ea9a877 521 *
ganlikun 0:13413ea9a877 522 * \details Write the contents of a given memory buffer into a range of
ganlikun 0:13413ea9a877 523 * storage memory. In the case of flash memory, the destination range in
ganlikun 0:13413ea9a877 524 * storage memory typically has its contents in an erased state from a
ganlikun 0:13413ea9a877 525 * preceding erase operation. The source memory buffer is owned by the
ganlikun 0:13413ea9a877 526 * caller and should remain accessible for the lifetime of this command.
ganlikun 0:13413ea9a877 527 *
ganlikun 0:13413ea9a877 528 * @param [in] addr
ganlikun 0:13413ea9a877 529 * This is the start address of the range to be written into. It
ganlikun 0:13413ea9a877 530 * needs to be aligned to the device's \em program_unit
ganlikun 0:13413ea9a877 531 * specified in \ref ARM_STORAGE_INFO.
ganlikun 0:13413ea9a877 532 *
ganlikun 0:13413ea9a877 533 * @param [in] data
ganlikun 0:13413ea9a877 534 * The source of the write operation. The buffer is owned by the
ganlikun 0:13413ea9a877 535 * caller and should remain accessible for the lifetime of this
ganlikun 0:13413ea9a877 536 * command.
ganlikun 0:13413ea9a877 537 *
ganlikun 0:13413ea9a877 538 * @param [in] size
ganlikun 0:13413ea9a877 539 * The number of bytes requested to be written. The buffer
ganlikun 0:13413ea9a877 540 * should be at least as large as this size. \note 'size' should
ganlikun 0:13413ea9a877 541 * be a multiple of the device's 'program_unit' (see \ref
ganlikun 0:13413ea9a877 542 * ARM_STORAGE_INFO).
ganlikun 0:13413ea9a877 543 *
ganlikun 0:13413ea9a877 544 * @note It is best for the middleware to write in units of
ganlikun 0:13413ea9a877 545 * 'optimal_program_unit' (\ref ARM_STORAGE_INFO) of the device.
ganlikun 0:13413ea9a877 546 *
ganlikun 0:13413ea9a877 547 * @note This API may execute asynchronously if
ganlikun 0:13413ea9a877 548 * ARM_STORAGE_CAPABILITIES::asynchronous_ops is set. Asynchronous
ganlikun 0:13413ea9a877 549 * execution is optional even if 'asynchronous_ops' is set.
ganlikun 0:13413ea9a877 550 *
ganlikun 0:13413ea9a877 551 * @return If asynchronous activity is launched, an invocation returns
ganlikun 0:13413ea9a877 552 * ARM_DRIVER_OK, and the caller can expect to receive a callback in the
ganlikun 0:13413ea9a877 553 * future with the number of successfully transferred bytes passed in as
ganlikun 0:13413ea9a877 554 * the 'status' parameter. In the case of synchronous execution, control
ganlikun 0:13413ea9a877 555 * returns after completion with a positive transfer-count. Return values
ganlikun 0:13413ea9a877 556 * less than ARM_DRIVER_OK (0) signify errors.
ganlikun 0:13413ea9a877 557 */
ganlikun 0:13413ea9a877 558 int32_t (*ProgramData)(uint64_t addr, const void *data, uint32_t size);
ganlikun 0:13413ea9a877 559
ganlikun 0:13413ea9a877 560 /**
ganlikun 0:13413ea9a877 561 * @brief Erase Storage range.
ganlikun 0:13413ea9a877 562 *
ganlikun 0:13413ea9a877 563 * @details This function erases a range of storage specified by [addr, addr +
ganlikun 0:13413ea9a877 564 * size). Both 'addr' and 'addr + size' should align with the
ganlikun 0:13413ea9a877 565 * 'erase_unit'(s) of the respective owning storage block(s) (see \ref
ganlikun 0:13413ea9a877 566 * ARM_STORAGE_BLOCK and \ref ARM_STORAGE_BLOCK_ATTRIBUTES). The range to
ganlikun 0:13413ea9a877 567 * be erased will have its contents returned to the un-programmed state--
ganlikun 0:13413ea9a877 568 * i.e. to 'erased_value' (see \ref ARM_STORAGE_BLOCK_ATTRIBUTES), which
ganlikun 0:13413ea9a877 569 * is usually 1 to indicate the pattern of all ones: 0xFF.
ganlikun 0:13413ea9a877 570 *
ganlikun 0:13413ea9a877 571 * @param [in] addr
ganlikun 0:13413ea9a877 572 * This is the start-address of the range to be erased. It must
ganlikun 0:13413ea9a877 573 * start at an 'erase_unit' boundary of the underlying block.
ganlikun 0:13413ea9a877 574 *
ganlikun 0:13413ea9a877 575 * @param [in] size
ganlikun 0:13413ea9a877 576 * Size (in bytes) of the range to be erased. 'addr + size'
ganlikun 0:13413ea9a877 577 * must be aligned with the 'erase_unit' of the underlying
ganlikun 0:13413ea9a877 578 * block.
ganlikun 0:13413ea9a877 579 *
ganlikun 0:13413ea9a877 580 * @note This API may execute asynchronously if
ganlikun 0:13413ea9a877 581 * ARM_STORAGE_CAPABILITIES::asynchronous_ops is set. Asynchronous
ganlikun 0:13413ea9a877 582 * execution is optional even if 'asynchronous_ops' is set.
ganlikun 0:13413ea9a877 583 *
ganlikun 0:13413ea9a877 584 * @return
ganlikun 0:13413ea9a877 585 * If the range to be erased doesn't align with the erase_units of the
ganlikun 0:13413ea9a877 586 * respective start and end blocks, ARM_DRIVER_ERROR_PARAMETER is returned.
ganlikun 0:13413ea9a877 587 * If any part of the range is protected, ARM_STORAGE_ERROR_PROTECTED is
ganlikun 0:13413ea9a877 588 * returned. If any part of the range is not erasable,
ganlikun 0:13413ea9a877 589 * ARM_STORAGE_ERROR_NOT_ERASABLE is returned. All such sanity-check
ganlikun 0:13413ea9a877 590 * failures result in the error code being returned synchronously and the
ganlikun 0:13413ea9a877 591 * storage bytes within the range remain unaffected.
ganlikun 0:13413ea9a877 592 * Otherwise the function executes in the following ways:
ganlikun 0:13413ea9a877 593 * If asynchronous activity is launched, an invocation returns
ganlikun 0:13413ea9a877 594 * ARM_DRIVER_OK, and the caller can expect to receive a callback in the
ganlikun 0:13413ea9a877 595 * future with the number of successfully erased bytes passed in as
ganlikun 0:13413ea9a877 596 * the 'status' parameter. In the case of synchronous execution, control
ganlikun 0:13413ea9a877 597 * returns after completion with a positive erase-count. Return values
ganlikun 0:13413ea9a877 598 * less than ARM_DRIVER_OK (0) signify errors.
ganlikun 0:13413ea9a877 599 *
ganlikun 0:13413ea9a877 600 * @note Erase() may return a smaller (positive) value than the size of the
ganlikun 0:13413ea9a877 601 * requested range. The returned value indicates the actual number of bytes
ganlikun 0:13413ea9a877 602 * erased. It is the caller's responsibility to follow up with an appropriate
ganlikun 0:13413ea9a877 603 * request to complete the operation.
ganlikun 0:13413ea9a877 604 *
ganlikun 0:13413ea9a877 605 * @note in the case of a failed erase (except when
ganlikun 0:13413ea9a877 606 * ARM_DRIVER_ERROR_PARAMETER, ARM_STORAGE_ERROR_PROTECTED, or
ganlikun 0:13413ea9a877 607 * ARM_STORAGE_ERROR_NOT_ERASABLE is returned synchronously), the
ganlikun 0:13413ea9a877 608 * requested range should be assumed to be in an unknown state. The
ganlikun 0:13413ea9a877 609 * previous contents may not be retained.
ganlikun 0:13413ea9a877 610 */
ganlikun 0:13413ea9a877 611 int32_t (*Erase)(uint64_t addr, uint32_t size);
ganlikun 0:13413ea9a877 612
ganlikun 0:13413ea9a877 613 /**
ganlikun 0:13413ea9a877 614 * @brief Erase complete storage. Optional function for faster erase of the complete device.
ganlikun 0:13413ea9a877 615 *
ganlikun 0:13413ea9a877 616 * This optional function erases the complete device. If the device does not
ganlikun 0:13413ea9a877 617 * support global erase then the function returns the error value \ref
ganlikun 0:13413ea9a877 618 * ARM_DRIVER_ERROR_UNSUPPORTED. The data field \em 'erase_all' = 1
ganlikun 0:13413ea9a877 619 * of the structure \ref ARM_STORAGE_CAPABILITIES encodes that
ganlikun 0:13413ea9a877 620 * ARM_STORAGE_EraseAll is supported.
ganlikun 0:13413ea9a877 621 *
ganlikun 0:13413ea9a877 622 * @note This API may execute asynchronously if
ganlikun 0:13413ea9a877 623 * ARM_STORAGE_CAPABILITIES::asynchronous_ops is set. Asynchronous
ganlikun 0:13413ea9a877 624 * execution is optional even if 'asynchronous_ops' is set.
ganlikun 0:13413ea9a877 625 *
ganlikun 0:13413ea9a877 626 * @return
ganlikun 0:13413ea9a877 627 * If any part of the storage range is protected,
ganlikun 0:13413ea9a877 628 * ARM_STORAGE_ERROR_PROTECTED is returned. If any part of the storage
ganlikun 0:13413ea9a877 629 * range is not erasable, ARM_STORAGE_ERROR_NOT_ERASABLE is returned. All
ganlikun 0:13413ea9a877 630 * such sanity-check failures result in the error code being returned
ganlikun 0:13413ea9a877 631 * synchronously and the storage bytes within the range remain unaffected.
ganlikun 0:13413ea9a877 632 * Otherwise the function executes in the following ways:
ganlikun 0:13413ea9a877 633 * If asynchronous activity is launched, an invocation returns
ganlikun 0:13413ea9a877 634 * ARM_DRIVER_OK, and the caller can expect to receive a callback in the
ganlikun 0:13413ea9a877 635 * future with ARM_DRIVER_OK passed in as the 'status' parameter. In the
ganlikun 0:13413ea9a877 636 * case of synchronous execution, control returns after completion with a
ganlikun 0:13413ea9a877 637 * value of 1. Return values less than ARM_DRIVER_OK (0) signify errors.
ganlikun 0:13413ea9a877 638 */
ganlikun 0:13413ea9a877 639 int32_t (*EraseAll)(void);
ganlikun 0:13413ea9a877 640
ganlikun 0:13413ea9a877 641 /**
ganlikun 0:13413ea9a877 642 * @brief Get the status of the current (or previous) command executed by the
ganlikun 0:13413ea9a877 643 * storage controller; stored in the structure \ref ARM_STORAGE_STATUS.
ganlikun 0:13413ea9a877 644 *
ganlikun 0:13413ea9a877 645 * @return
ganlikun 0:13413ea9a877 646 * The status of the underlying controller.
ganlikun 0:13413ea9a877 647 *
ganlikun 0:13413ea9a877 648 * @note This API returns synchronously--it does not result in an invocation
ganlikun 0:13413ea9a877 649 * of a completion callback.
ganlikun 0:13413ea9a877 650 */
ganlikun 0:13413ea9a877 651 ARM_STORAGE_STATUS (*GetStatus)(void);
ganlikun 0:13413ea9a877 652
ganlikun 0:13413ea9a877 653 /**
ganlikun 0:13413ea9a877 654 * @brief Get information about the Storage device; stored in the structure \ref ARM_STORAGE_INFO.
ganlikun 0:13413ea9a877 655 *
ganlikun 0:13413ea9a877 656 * @param [out] info
ganlikun 0:13413ea9a877 657 * A caller-supplied buffer capable of being filled in with an
ganlikun 0:13413ea9a877 658 * \ref ARM_STORAGE_INFO.
ganlikun 0:13413ea9a877 659 *
ganlikun 0:13413ea9a877 660 * @return ARM_DRIVER_OK if a ARM_STORAGE_INFO structure containing top level
ganlikun 0:13413ea9a877 661 * metadata about the storage controller is filled into the supplied
ganlikun 0:13413ea9a877 662 * buffer, else an appropriate error value.
ganlikun 0:13413ea9a877 663 *
ganlikun 0:13413ea9a877 664 * @note It is the caller's responsibility to ensure that the buffer passed in
ganlikun 0:13413ea9a877 665 * is able to be initialized with a \ref ARM_STORAGE_INFO.
ganlikun 0:13413ea9a877 666 *
ganlikun 0:13413ea9a877 667 * @note This API returns synchronously--it does not result in an invocation
ganlikun 0:13413ea9a877 668 * of a completion callback.
ganlikun 0:13413ea9a877 669 */
ganlikun 0:13413ea9a877 670 int32_t (*GetInfo)(ARM_STORAGE_INFO *info);
ganlikun 0:13413ea9a877 671
ganlikun 0:13413ea9a877 672 /**
ganlikun 0:13413ea9a877 673 * \brief For memory-mapped storage, resolve an address relative to
ganlikun 0:13413ea9a877 674 * the storage controller into a memory address.
ganlikun 0:13413ea9a877 675 *
ganlikun 0:13413ea9a877 676 * @param addr
ganlikun 0:13413ea9a877 677 * This is the address for which we want a resolution to the
ganlikun 0:13413ea9a877 678 * processor's physical address space. It is an offset from the
ganlikun 0:13413ea9a877 679 * start of the storage map maintained by the owning storage
ganlikun 0:13413ea9a877 680 * controller.
ganlikun 0:13413ea9a877 681 *
ganlikun 0:13413ea9a877 682 * @return
ganlikun 0:13413ea9a877 683 * The resolved address in the processor's address space; else
ganlikun 0:13413ea9a877 684 * ARM_STORAGE_INVALID_ADDRESS, if no resolution is possible.
ganlikun 0:13413ea9a877 685 *
ganlikun 0:13413ea9a877 686 * @note This API returns synchronously. The invocation should return quickly,
ganlikun 0:13413ea9a877 687 * and result in a resolved address.
ganlikun 0:13413ea9a877 688 */
ganlikun 0:13413ea9a877 689 uint32_t (*ResolveAddress)(uint64_t addr);
ganlikun 0:13413ea9a877 690
ganlikun 0:13413ea9a877 691 /**
ganlikun 0:13413ea9a877 692 * @brief Advance to the successor of the current block (iterator), or fetch
ganlikun 0:13413ea9a877 693 * the first block (if 'prev_block' is passed in as NULL).
ganlikun 0:13413ea9a877 694 *
ganlikun 0:13413ea9a877 695 * @details This helper function fetches (an iterator to) the next block (or
ganlikun 0:13413ea9a877 696 * the first block if 'prev_block' is passed in as NULL). In the failure
ganlikun 0:13413ea9a877 697 * case, a terminating, invalid block iterator is filled into the out
ganlikun 0:13413ea9a877 698 * parameter: 'next_block'. In combination with \ref
ganlikun 0:13413ea9a877 699 * ARM_STORAGE_VALID_BLOCK(), it can be used to iterate over the sequence
ganlikun 0:13413ea9a877 700 * of blocks within the storage map:
ganlikun 0:13413ea9a877 701 *
ganlikun 0:13413ea9a877 702 * \code
ganlikun 0:13413ea9a877 703 * ARM_STORAGE_BLOCK block;
ganlikun 0:13413ea9a877 704 * for (drv->GetNextBlock(NULL, &block); ARM_STORAGE_VALID_BLOCK(&block); drv->GetNextBlock(&block, &block)) {
ganlikun 0:13413ea9a877 705 * // make use of block
ganlikun 0:13413ea9a877 706 * }
ganlikun 0:13413ea9a877 707 * \endcode
ganlikun 0:13413ea9a877 708 *
ganlikun 0:13413ea9a877 709 * @param[in] prev_block
ganlikun 0:13413ea9a877 710 * An existing block (iterator) within the same storage
ganlikun 0:13413ea9a877 711 * controller. The memory buffer holding this block is owned
ganlikun 0:13413ea9a877 712 * by the caller. This pointer may be NULL; if so, the
ganlikun 0:13413ea9a877 713 * invocation fills in the first block into the out parameter:
ganlikun 0:13413ea9a877 714 * 'next_block'.
ganlikun 0:13413ea9a877 715 *
ganlikun 0:13413ea9a877 716 * @param[out] next_block
ganlikun 0:13413ea9a877 717 * A caller-owned buffer large enough to be filled in with
ganlikun 0:13413ea9a877 718 * the following ARM_STORAGE_BLOCK. It is legal to provide the
ganlikun 0:13413ea9a877 719 * same buffer using 'next_block' as was passed in with 'prev_block'. It
ganlikun 0:13413ea9a877 720 * is also legal to pass a NULL into this parameter if the
ganlikun 0:13413ea9a877 721 * caller isn't interested in populating a buffer with the next
ganlikun 0:13413ea9a877 722 * block--i.e. if the caller only wishes to establish the
ganlikun 0:13413ea9a877 723 * presence of a next block.
ganlikun 0:13413ea9a877 724 *
ganlikun 0:13413ea9a877 725 * @return ARM_DRIVER_OK if a valid next block is found (or first block, if
ganlikun 0:13413ea9a877 726 * prev_block is passed as NULL); upon successful operation, the contents
ganlikun 0:13413ea9a877 727 * of the next (or first) block are filled into the buffer pointed to by
ganlikun 0:13413ea9a877 728 * the parameter 'next_block' and ARM_STORAGE_VALID_BLOCK(next_block) is
ganlikun 0:13413ea9a877 729 * guaranteed to be true. Upon reaching the end of the sequence of blocks
ganlikun 0:13413ea9a877 730 * (iterators), or in case the driver is unable to fetch information about
ganlikun 0:13413ea9a877 731 * the next (or first) block, an error (negative) value is returned and an
ganlikun 0:13413ea9a877 732 * invalid StorageBlock is populated into the supplied buffer. If
ganlikun 0:13413ea9a877 733 * prev_block is NULL, the first block is returned.
ganlikun 0:13413ea9a877 734 *
ganlikun 0:13413ea9a877 735 * @note This API returns synchronously--it does not result in an invocation
ganlikun 0:13413ea9a877 736 * of a completion callback.
ganlikun 0:13413ea9a877 737 */
ganlikun 0:13413ea9a877 738 int32_t (*GetNextBlock)(const ARM_STORAGE_BLOCK* prev_block, ARM_STORAGE_BLOCK *next_block);
ganlikun 0:13413ea9a877 739
ganlikun 0:13413ea9a877 740 /**
ganlikun 0:13413ea9a877 741 * @brief Find the storage block (iterator) encompassing a given storage address.
ganlikun 0:13413ea9a877 742 *
ganlikun 0:13413ea9a877 743 * @param[in] addr
ganlikun 0:13413ea9a877 744 * Storage address in bytes.
ganlikun 0:13413ea9a877 745 *
ganlikun 0:13413ea9a877 746 * @param[out] block
ganlikun 0:13413ea9a877 747 * A caller-owned buffer large enough to be filled in with the
ganlikun 0:13413ea9a877 748 * ARM_STORAGE_BLOCK encapsulating the given address. This value
ganlikun 0:13413ea9a877 749 * can also be passed in as NULL if the caller isn't interested
ganlikun 0:13413ea9a877 750 * in populating a buffer with the block--if the caller only
ganlikun 0:13413ea9a877 751 * wishes to establish the presence of a containing storage
ganlikun 0:13413ea9a877 752 * block.
ganlikun 0:13413ea9a877 753 *
ganlikun 0:13413ea9a877 754 * @return ARM_DRIVER_OK if a containing storage-block is found. In this case,
ganlikun 0:13413ea9a877 755 * if block is non-NULL, the buffer pointed to by it is populated with
ganlikun 0:13413ea9a877 756 * the contents of the storage block--i.e. if block is valid and a block is
ganlikun 0:13413ea9a877 757 * found, ARM_STORAGE_VALID_BLOCK(block) would return true following this
ganlikun 0:13413ea9a877 758 * call. If there is no storage block containing the given offset, or in
ganlikun 0:13413ea9a877 759 * case the driver is unable to resolve an address to a storage-block, an
ganlikun 0:13413ea9a877 760 * error (negative) value is returned and an invalid StorageBlock is
ganlikun 0:13413ea9a877 761 * populated into the supplied buffer.
ganlikun 0:13413ea9a877 762 *
ganlikun 0:13413ea9a877 763 * @note This API returns synchronously--it does not result in an invocation
ganlikun 0:13413ea9a877 764 * of a completion callback.
ganlikun 0:13413ea9a877 765 */
ganlikun 0:13413ea9a877 766 int32_t (*GetBlock)(uint64_t addr, ARM_STORAGE_BLOCK *block);
ganlikun 0:13413ea9a877 767 } const ARM_DRIVER_STORAGE;
ganlikun 0:13413ea9a877 768
ganlikun 0:13413ea9a877 769 #ifdef __cplusplus
ganlikun 0:13413ea9a877 770 }
ganlikun 0:13413ea9a877 771 #endif // __cplusplus
ganlikun 0:13413ea9a877 772
ganlikun 0:13413ea9a877 773 #endif /* __DRIVER_STORAGE_H */
ganlikun 0:13413ea9a877 774
ganlikun 0:13413ea9a877 775 /** @}*/
ganlikun 0:13413ea9a877 776