projects / mirror_edk2.git / blame
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| 21bd4958 FT |
1 | /** @file\r |
| 2 | This protocol provides services that allow NVM Express commands to be sent to an\r | |
| 3 | NVM Express controller or to a specific namespace in a NVM Express controller.\r | |
| 4 | This protocol interface is optimized for storage.\r | |
| 5 | \r | |
| 6 | Copyright (c) 2013 - 2015, Intel Corporation. All rights reserved.<BR>\r | |
| 7 | This program and the accompanying materials\r | |
| 8 | are licensed and made available under the terms and conditions of the BSD License\r | |
| 9 | which accompanies this distribution. The full text of the license may be found at\r | |
| 10 | http://opensource.org/licenses/bsd-license.php.\r | |
| 11 | \r | |
| 12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 14 | \r | |
| 15 | **/\r | |
| 16 | \r | |
| 17 | #ifndef _UEFI_NVM_EXPRESS_PASS_THRU_H_\r | |
| 18 | #define _UEFI_NVM_EXPRESS_PASS_THRU_H_\r | |
| 19 | \r | |
| 20 | #define EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL_GUID \\r | |
| 21 | { \\r | |
| 22 | 0x52c78312, 0x8edc, 0x4233, { 0x98, 0xf2, 0x1a, 0x1a, 0xa5, 0xe3, 0x88, 0xa5 } \\r | |
| 23 | }\r | |
| 24 | \r | |
| 25 | typedef struct _EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL;\r | |
| 26 | \r | |
| 27 | typedef struct {\r | |
| 28 | UINT32 Attributes;\r | |
| 29 | UINT32 IoAlign;\r | |
| 30 | UINT32 NvmeVersion;\r | |
| 31 | } EFI_NVM_EXPRESS_PASS_THRU_MODE;\r | |
| 32 | \r | |
| 33 | //\r | |
| 34 | // If this bit is set, then the EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL interface is\r | |
| 35 | // for directly addressable namespaces.\r | |
| 36 | //\r | |
| 37 | #define EFI_NVM_EXPRESS_PASS_THRU_ATTRIBUTES_PHYSICAL 0x0001\r | |
| 38 | //\r | |
| 39 | // If this bit is set, then the EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL interface is\r | |
| 40 | // for a single volume logical namespace comprised of multiple namespaces.\r | |
| 41 | //\r | |
| 42 | #define EFI_NVM_EXPRESS_PASS_THRU_ATTRIBUTES_LOGICAL 0x0002\r | |
| 43 | //\r | |
| 44 | // If this bit is set, then the EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL interface\r | |
| 45 | // supports non-blocking I/O.\r | |
| 46 | //\r | |
| 47 | #define EFI_NVM_EXPRESS_PASS_THRU_ATTRIBUTES_NONBLOCKIO 0x0004\r | |
| 48 | //\r | |
| 49 | // If this bit is set, then the EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL interface\r | |
| 50 | // supports NVM command set.\r | |
| 51 | //\r | |
| 52 | #define EFI_NVM_EXPRESS_PASS_THRU_ATTRIBUTES_CMD_SET_NVM 0x0008\r | |
| 53 | \r | |
| 54 | //\r | |
| 55 | // FusedOperation\r | |
| 56 | //\r | |
| 57 | #define NORMAL_CMD 0x00\r | |
| 58 | #define FUSED_FIRST_CMD 0x01\r | |
| 59 | #define FUSED_SECOND_CMD 0x02\r | |
| 60 | \r | |
| 61 | typedef struct {\r | |
| 62 | UINT32 Opcode:8;\r | |
| 63 | UINT32 FusedOperation:2;\r | |
| 64 | UINT32 Reserved:22;\r | |
| 65 | } NVME_CDW0;\r | |
| 66 | \r | |
| 67 | //\r | |
| 68 | // Flags\r | |
| 69 | //\r | |
| 70 | #define CDW2_VALID 0x01\r | |
| 71 | #define CDW3_VALID 0x02\r | |
| 72 | #define CDW10_VALID 0x04\r | |
| 73 | #define CDW11_VALID 0x08\r | |
| 74 | #define CDW12_VALID 0x10\r | |
| 75 | #define CDW13_VALID 0x20\r | |
| 76 | #define CDW14_VALID 0x40\r | |
| 77 | #define CDW15_VALID 0x80\r | |
| 78 | \r | |
| 79 | //\r | |
| 80 | // Queue Type\r | |
| 81 | //\r | |
| 82 | #define NVME_ADMIN_QUEUE 0x00\r | |
| 83 | #define NVME_IO_QUEUE 0x01\r | |
| 84 | \r | |
| 85 | typedef struct {\r | |
| 86 | NVME_CDW0 Cdw0;\r | |
| 87 | UINT8 Flags;\r | |
| 88 | UINT32 Nsid;\r | |
| 89 | UINT32 Cdw2;\r | |
| 90 | UINT32 Cdw3;\r | |
| 91 | UINT32 Cdw10;\r | |
| 92 | UINT32 Cdw11;\r | |
| 93 | UINT32 Cdw12;\r | |
| 94 | UINT32 Cdw13;\r | |
| 95 | UINT32 Cdw14;\r | |
| 96 | UINT32 Cdw15;\r | |
| 97 | } EFI_NVM_EXPRESS_COMMAND;\r | |
| 98 | \r | |
| 99 | typedef struct {\r | |
| 100 | UINT32 DW0;\r | |
| 101 | UINT32 DW1;\r | |
| 102 | UINT32 DW2;\r | |
| 103 | UINT32 DW3;\r | |
| 104 | } EFI_NVM_EXPRESS_COMPLETION;\r | |
| 105 | \r | |
| 106 | typedef struct {\r | |
| 107 | UINT64 CommandTimeout;\r | |
| 108 | VOID *TransferBuffer;\r | |
| 109 | UINT32 TransferLength;\r | |
| 110 | VOID *MetadataBuffer;\r | |
| 111 | UINT32 MetadataLength;\r | |
| 112 | UINT8 QueueType;\r | |
| 113 | EFI_NVM_EXPRESS_COMMAND *NvmeCmd;\r | |
| 114 | EFI_NVM_EXPRESS_COMPLETION *NvmeCompletion;\r | |
| 115 | } EFI_NVM_EXPRESS_PASS_THRU_COMMAND_PACKET;\r | |
| 116 | \r | |
| 117 | //\r | |
| 118 | // Protocol funtion prototypes\r | |
| 119 | //\r | |
| 120 | /**\r | |
| 121 | Sends an NVM Express Command Packet to an NVM Express controller or namespace. This function supports\r | |
| 122 | both blocking I/O and non-blocking I/O. The blocking I/O functionality is required, and the non-blocking\r | |
| 123 | I/O functionality is optional.\r | |
| 124 | \r | |
| 125 | \r | |
| 126 | @param[in] This A pointer to the EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL instance.\r | |
| 127 | @param[in] NamespaceId A 32 bit namespace ID as defined in the NVMe specification to which the NVM Express Command\r | |
| 128 | Packet will be sent. A value of 0 denotes the NVM Express controller, a value of all 0xFF's\r | |
| 129 | (all bytes are 0xFF) in the namespace ID specifies that the command packet should be sent to\r | |
| 130 | all valid namespaces.\r | |
| 131 | @param[in,out] Packet A pointer to the NVM Express Command Packet.\r | |
| 132 | @param[in] Event If non-blocking I/O is not supported then Event is ignored, and blocking I/O is performed.\r | |
| 133 | If Event is NULL, then blocking I/O is performed. If Event is not NULL and non-blocking I/O\r | |
| 134 | is supported, then non-blocking I/O is performed, and Event will be signaled when the NVM\r | |
| 135 | Express Command Packet completes. \r | |
| 136 | \r | |
| 137 | @retval EFI_SUCCESS The NVM Express Command Packet was sent by the host. TransferLength bytes were transferred\r | |
| 138 | to, or from DataBuffer.\r | |
| 139 | @retval EFI_BAD_BUFFER_SIZE The NVM Express Command Packet was not executed. The number of bytes that could be transferred\r | |
| 140 | is returned in TransferLength.\r | |
| 141 | @retval EFI_NOT_READY The NVM Express Command Packet could not be sent because the controller is not ready. The caller\r | |
| 142 | may retry again later.\r | |
| 143 | @retval EFI_DEVICE_ERROR A device error occurred while attempting to send the NVM Express Command Packet.\r | |
| 144 | @retval EFI_INVALID_PARAMETER NamespaceId or the contents of EFI_NVM_EXPRESS_PASS_THRU_COMMAND_PACKET are invalid. The NVM\r | |
| 145 | Express Command Packet was not sent, so no additional status information is available.\r | |
| 146 | @retval EFI_UNSUPPORTED The command described by the NVM Express Command Packet is not supported by the NVM Express\r | |
| 147 | controller. The NVM Express Command Packet was not sent so no additional status information\r | |
| 148 | is available.\r | |
| 149 | @retval EFI_TIMEOUT A timeout occurred while waiting for the NVM Express Command Packet to execute.\r | |
| 150 | \r | |
| 151 | **/\r | |
| 152 | typedef\r | |
| 153 | EFI_STATUS\r | |
| 154 | (EFIAPI *EFI_NVM_EXPRESS_PASS_THRU_PASSTHRU)(\r | |
| 155 | IN EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL *This,\r | |
| 156 | IN UINT32 NamespaceId,\r | |
| 157 | IN OUT EFI_NVM_EXPRESS_PASS_THRU_COMMAND_PACKET *Packet,\r | |
| 158 | IN EFI_EVENT Event OPTIONAL\r | |
| 159 | );\r | |
| 160 | \r | |
| 161 | /**\r | |
| 162 | Used to retrieve the next namespace ID for this NVM Express controller.\r | |
| 163 | \r | |
| 164 | The EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL.GetNextNamespace() function retrieves the next valid\r | |
| 165 | namespace ID on this NVM Express controller. \r | |
| 166 | \r | |
| 167 | If on input the value pointed to by NamespaceId is 0xFFFFFFFF, then the first valid namespace\r | |
| 168 | ID defined on the NVM Express controller is returned in the location pointed to by NamespaceId\r | |
| 169 | and a status of EFI_SUCCESS is returned.\r | |
| 170 | \r | |
| 171 | If on input the value pointed to by NamespaceId is an invalid namespace ID other than 0xFFFFFFFF,\r | |
| 172 | then EFI_INVALID_PARAMETER is returned.\r | |
| 173 | \r | |
| 174 | If on input the value pointed to by NamespaceId is a valid namespace ID, then the next valid\r | |
| 175 | namespace ID on the NVM Express controller is returned in the location pointed to by NamespaceId,\r | |
| 176 | and EFI_SUCCESS is returned.\r | |
| 177 | \r | |
| 178 | If the value pointed to by NamespaceId is the namespace ID of the last namespace on the NVM\r | |
| 179 | Express controller, then EFI_NOT_FOUND is returned.\r | |
| 180 | \r | |
| 181 | @param[in] This A pointer to the EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL instance.\r | |
| 182 | @param[in,out] NamespaceId On input, a pointer to a legal NamespaceId for an NVM Express\r | |
| 183 | namespace present on the NVM Express controller. On output, a\r | |
| 184 | pointer to the next NamespaceId of an NVM Express namespace on\r | |
| 185 | an NVM Express controller. An input value of 0xFFFFFFFF retrieves\r | |
| 186 | the first NamespaceId for an NVM Express namespace present on an\r | |
| 187 | NVM Express controller.\r | |
| 188 | \r | |
| 189 | @retval EFI_SUCCESS The Namespace ID of the next Namespace was returned.\r | |
| 190 | @retval EFI_NOT_FOUND There are no more namespaces defined on this controller.\r | |
| 191 | @retval EFI_INVALID_PARAMETER NamespaceId is an invalid value other than 0xFFFFFFFF.\r | |
| 192 | \r | |
| 193 | **/\r | |
| 194 | typedef\r | |
| 195 | EFI_STATUS\r | |
| 196 | (EFIAPI *EFI_NVM_EXPRESS_PASS_THRU_GET_NEXT_NAMESPACE)(\r | |
| 197 | IN EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL *This,\r | |
| 198 | IN OUT UINT32 *NamespaceId\r | |
| 199 | );\r | |
| 200 | \r | |
| 201 | /**\r | |
| 202 | Used to allocate and build a device path node for an NVM Express namespace on an NVM Express controller.\r | |
| 203 | \r | |
| 204 | The EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL.BuildDevicePath() function allocates and builds a single device\r | |
| 205 | path node for the NVM Express namespace specified by NamespaceId.\r | |
| 206 | \r | |
| 207 | If the NamespaceId is not valid, then EFI_NOT_FOUND is returned.\r | |
| 208 | \r | |
| 209 | If DevicePath is NULL, then EFI_INVALID_PARAMETER is returned. \r | |
| 210 | \r | |
| 211 | If there are not enough resources to allocate the device path node, then EFI_OUT_OF_RESOURCES is returned.\r | |
| 212 | \r | |
| 213 | Otherwise, DevicePath is allocated with the boot service AllocatePool(), the contents of DevicePath are\r | |
| 214 | initialized to describe the NVM Express namespace specified by NamespaceId, and EFI_SUCCESS is returned.\r | |
| 215 | \r | |
| 216 | @param[in] This A pointer to the EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL instance.\r | |
| 217 | @param[in] NamespaceId The NVM Express namespace ID for which a device path node is to be\r | |
| 218 | allocated and built. Caller must set the NamespaceId to zero if the\r | |
| 219 | device path node will contain a valid UUID.\r | |
| 220 | @param[in,out] DevicePath A pointer to a single device path node that describes the NVM Express\r | |
| 221 | namespace specified by NamespaceId. This function is responsible for\r | |
| 222 | allocating the buffer DevicePath with the boot service AllocatePool().\r | |
| 223 | It is the caller's responsibility to free DevicePath when the caller\r | |
| 224 | is finished with DevicePath.\r | |
| 225 | @retval EFI_SUCCESS The device path node that describes the NVM Express namespace specified\r | |
| 226 | by NamespaceId was allocated and returned in DevicePath.\r | |
| 227 | @retval EFI_NOT_FOUND The NamespaceId is not valid.\r | |
| 228 | @retval EFI_INVALID_PARAMETER DevicePath is NULL.\r | |
| 229 | @retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate the DevicePath node.\r | |
| 230 | \r | |
| 231 | **/\r | |
| 232 | typedef\r | |
| 233 | EFI_STATUS\r | |
| 234 | (EFIAPI *EFI_NVM_EXPRESS_PASS_THRU_BUILD_DEVICE_PATH)(\r | |
| 235 | IN EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL *This,\r | |
| 236 | IN UINT32 NamespaceId,\r | |
| 237 | IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath\r | |
| 238 | );\r | |
| 239 | \r | |
| 240 | /**\r | |
| 241 | Used to translate a device path node to a namespace ID.\r | |
| 242 | \r | |
| 243 | The EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL.GetNamespace() function determines the namespace ID associated with the\r | |
| 244 | namespace described by DevicePath.\r | |
| 245 | \r | |
| 246 | If DevicePath is a device path node type that the NVM Express Pass Thru driver supports, then the NVM Express\r | |
| 247 | Pass Thru driver will attempt to translate the contents DevicePath into a namespace ID.\r | |
| 248 | \r | |
| 249 | If this translation is successful, then that namespace ID is returned in NamespaceId, and EFI_SUCCESS is returned\r | |
| 250 | \r | |
| 251 | @param[in] This A pointer to the EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL instance.\r | |
| 252 | @param[in] DevicePath A pointer to the device path node that describes an NVM Express namespace on\r | |
| 253 | the NVM Express controller.\r | |
| 254 | @param[out] NamespaceId The NVM Express namespace ID contained in the device path node.\r | |
| 255 | \r | |
| 256 | @retval EFI_SUCCESS DevicePath was successfully translated to NamespaceId.\r | |
| 257 | @retval EFI_INVALID_PARAMETER If DevicePath or NamespaceId are NULL, then EFI_INVALID_PARAMETER is returned.\r | |
| 258 | @retval EFI_UNSUPPORTED If DevicePath is not a device path node type that the NVM Express Pass Thru driver\r | |
| 259 | supports, then EFI_UNSUPPORTED is returned.\r | |
| 260 | @retval EFI_NOT_FOUND If DevicePath is a device path node type that the NVM Express Pass Thru driver\r | |
| 261 | supports, but there is not a valid translation from DevicePath to a namespace ID,\r | |
| 262 | then EFI_NOT_FOUND is returned.\r | |
| 263 | **/\r | |
| 264 | typedef\r | |
| 265 | EFI_STATUS\r | |
| 266 | (EFIAPI *EFI_NVM_EXPRESS_PASS_THRU_GET_NAMESPACE)(\r | |
| 267 | IN EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL *This,\r | |
| 268 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r | |
| 269 | OUT UINT32 *NamespaceId\r | |
| 270 | );\r | |
| 271 | \r | |
| 272 | //\r | |
| 273 | // Protocol Interface Structure\r | |
| 274 | //\r | |
| 275 | struct _EFI_NVM_EXPRESS_PASS_THRU_PROTOCOL {\r | |
| 276 | EFI_NVM_EXPRESS_PASS_THRU_MODE *Mode;\r | |
| 277 | EFI_NVM_EXPRESS_PASS_THRU_PASSTHRU PassThru;\r | |
| 278 | EFI_NVM_EXPRESS_PASS_THRU_GET_NEXT_NAMESPACE GetNextNamespace;\r | |
| 279 | EFI_NVM_EXPRESS_PASS_THRU_BUILD_DEVICE_PATH BuildDevicePath;\r | |
| 280 | EFI_NVM_EXPRESS_PASS_THRU_GET_NAMESPACE GetNamespace;\r | |
| 281 | };\r | |
| 282 | \r | |
| 283 | extern EFI_GUID gEfiNvmExpressPassThruProtocolGuid;\r | |
| 284 | \r | |
| 285 | #endif\r | |
| 286 | \r |