| 1 | /** @file
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| 2 | Connect to and disconnect from the various network layers
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| 3 |
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| 4 | Copyright (c) 2011, Intel Corporation
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| 5 | All rights reserved. This program and the accompanying materials
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| 6 | are licensed and made available under the terms and conditions of the BSD License
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| 7 | which accompanies this distribution. The full text of the license may be found at
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| 8 | http://opensource.org/licenses/bsd-license.php
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| 9 |
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| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 12 |
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| 13 | **/
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| 14 |
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| 15 | #include "Socket.h"
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| 16 |
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| 17 |
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| 18 | /**
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| 19 | Connect to the network service bindings
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| 20 |
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| 21 | Walk the network service protocols on the controller handle and
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| 22 | locate any that are not in use. Create ::ESL_SERVICE structures to
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| 23 | manage the network layer interfaces for the socket driver. Tag
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| 24 | each of the network interfaces that are being used. Finally, this
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| 25 | routine calls ESL_SOCKET_BINDING::pfnInitialize to prepare the network
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| 26 | interface for use by the socket layer.
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| 27 |
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| 28 | @param [in] BindingHandle Handle for protocol binding.
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| 29 | @param [in] Controller Handle of device to work with.
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| 30 |
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| 31 | @retval EFI_SUCCESS This driver is added to Controller.
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| 32 | @retval other This driver does not support this device.
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| 33 |
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| 34 | **/
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| 35 | EFI_STATUS
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| 36 | EFIAPI
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| 37 | EslServiceConnect (
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| 38 | IN EFI_HANDLE BindingHandle,
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| 39 | IN EFI_HANDLE Controller
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| 40 | )
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| 41 | {
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| 42 | BOOLEAN bInUse;
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| 43 | UINTN LengthInBytes;
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| 44 | UINT8 * pBuffer;
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| 45 | CONST ESL_SOCKET_BINDING * pEnd;
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| 46 | VOID * pJunk;
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| 47 | ESL_SERVICE ** ppServiceListHead;
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| 48 | ESL_SERVICE * pService;
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| 49 | CONST ESL_SOCKET_BINDING * pSocketBinding;
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| 50 | EFI_SERVICE_BINDING_PROTOCOL * pServiceBinding;
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| 51 | EFI_STATUS Status;
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| 52 | EFI_TPL TplPrevious;
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| 53 |
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| 54 | DBG_ENTER ( );
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| 55 |
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| 56 | //
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| 57 | // Assume the list is empty
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| 58 | //
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| 59 | Status = EFI_UNSUPPORTED;
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| 60 | bInUse = FALSE;
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| 61 |
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| 62 | //
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| 63 | // Walk the list of network connection points
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| 64 | //
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| 65 | pSocketBinding = &cEslSocketBinding[0];
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| 66 | pEnd = &pSocketBinding[ cEslSocketBindingEntries ];
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| 67 | while ( pEnd > pSocketBinding ) {
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| 68 | //
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| 69 | // Determine if the controller supports the network protocol
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| 70 | //
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| 71 | Status = gBS->OpenProtocol (
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| 72 | Controller,
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| 73 | pSocketBinding->pNetworkBinding,
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| 74 | (VOID**)&pServiceBinding,
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| 75 | BindingHandle,
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| 76 | Controller,
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| 77 | EFI_OPEN_PROTOCOL_GET_PROTOCOL
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| 78 | );
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| 79 | if ( !EFI_ERROR ( Status )) {
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| 80 | //
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| 81 | // Determine if the socket layer is already connected
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| 82 | //
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| 83 | Status = gBS->OpenProtocol (
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| 84 | Controller,
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| 85 | (EFI_GUID *)pSocketBinding->pTagGuid,
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| 86 | &pJunk,
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| 87 | BindingHandle,
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| 88 | Controller,
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| 89 | EFI_OPEN_PROTOCOL_GET_PROTOCOL
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| 90 | );
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| 91 | if ( EFI_UNSUPPORTED == Status ) {
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| 92 | //
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| 93 | // Allocate a service structure since the tag is not present
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| 94 | //
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| 95 | LengthInBytes = sizeof ( *pService );
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| 96 | Status = gBS->AllocatePool (
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| 97 | EfiRuntimeServicesData,
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| 98 | LengthInBytes,
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| 99 | (VOID **) &pService
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| 100 | );
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| 101 | if ( !EFI_ERROR ( Status )) {
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| 102 | DEBUG (( DEBUG_POOL | DEBUG_INIT,
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| 103 | "0x%08x: Allocate pService, %d bytes\r\n",
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| 104 | pService,
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| 105 | LengthInBytes ));
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| 106 |
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| 107 | //
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| 108 | // Set the structure signature and service binding
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| 109 | //
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| 110 | ZeroMem ( pService, LengthInBytes );
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| 111 | pService->Signature = SERVICE_SIGNATURE;
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| 112 | pService->pSocketBinding = pSocketBinding;
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| 113 | pService->Controller = Controller;
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| 114 | pService->pServiceBinding = pServiceBinding;
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| 115 |
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| 116 | //
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| 117 | // Mark the controller in use
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| 118 | //
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| 119 | if ( !bInUse ) {
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| 120 | Status = gBS->InstallMultipleProtocolInterfaces (
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| 121 | &Controller,
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| 122 | &gEfiCallerIdGuid,
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| 123 | NULL,
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| 124 | NULL
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| 125 | );
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| 126 | if ( !EFI_ERROR ( Status )) {
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| 127 | DEBUG (( DEBUG_POOL | DEBUG_INIT | DEBUG_INFO,
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| 128 | "Installed: gEfiCallerIdGuid on 0x%08x\r\n",
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| 129 | Controller ));
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| 130 | bInUse = TRUE;
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| 131 | }
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| 132 | else {
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| 133 | if ( EFI_INVALID_PARAMETER == Status ) {
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| 134 | Status = EFI_SUCCESS;
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| 135 | }
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| 136 | }
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| 137 | }
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| 138 | if ( !EFI_ERROR ( Status )) {
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| 139 | //
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| 140 | // Mark the network service protocol in use
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| 141 | //
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| 142 | Status = gBS->InstallMultipleProtocolInterfaces (
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| 143 | &Controller,
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| 144 | pSocketBinding->pTagGuid,
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| 145 | pService,
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| 146 | NULL
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| 147 | );
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| 148 | if ( !EFI_ERROR ( Status )) {
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| 149 | DEBUG (( DEBUG_POOL | DEBUG_INIT | DEBUG_INFO,
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| 150 | "Installed: %s TagGuid on 0x%08x\r\n",
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| 151 | pSocketBinding->pName,
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| 152 | Controller ));
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| 153 |
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| 154 | //
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| 155 | // Synchronize with the socket layer
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| 156 | //
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| 157 | RAISE_TPL ( TplPrevious, TPL_SOCKETS );
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| 158 |
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| 159 | //
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| 160 | // Connect the service to the list
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| 161 | //
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| 162 | pBuffer = (UINT8 *)&mEslLayer;
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| 163 | pBuffer = &pBuffer[ pSocketBinding->ServiceListOffset ];
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| 164 | ppServiceListHead = (ESL_SERVICE **)pBuffer;
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| 165 | pService->pNext = *ppServiceListHead;
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| 166 | *ppServiceListHead = pService;
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| 167 |
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| 168 | //
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| 169 | // Release the socket layer synchronization
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| 170 | //
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| 171 | RESTORE_TPL ( TplPrevious );
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| 172 |
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| 173 | //
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| 174 | // Determine if the initialization was successful
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| 175 | //
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| 176 | if ( EFI_ERROR ( Status )) {
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| 177 | DEBUG (( DEBUG_ERROR | DEBUG_POOL | DEBUG_INIT,
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| 178 | "ERROR - Failed to initialize service %s on 0x%08x, Status: %r\r\n",
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| 179 | pSocketBinding->pName,
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| 180 | Controller,
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| 181 | Status ));
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| 182 |
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| 183 | //
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| 184 | // Free the network service binding if necessary
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| 185 | //
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| 186 | gBS->UninstallMultipleProtocolInterfaces (
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| 187 | Controller,
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| 188 | pSocketBinding->pTagGuid,
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| 189 | pService,
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| 190 | NULL );
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| 191 | DEBUG (( DEBUG_POOL | DEBUG_INIT | DEBUG_INFO,
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| 192 | "Removed: %s TagGuid from 0x%08x\r\n",
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| 193 | pSocketBinding->pName,
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| 194 | Controller ));
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| 195 | }
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| 196 | }
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| 197 | else {
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| 198 | DEBUG (( DEBUG_ERROR | DEBUG_POOL | DEBUG_INIT,
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| 199 | "ERROR - Failed to install %s TagGuid on 0x%08x, Status: %r\r\n",
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| 200 | pSocketBinding->pName,
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| 201 | Controller,
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| 202 | Status ));
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| 203 | }
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| 204 |
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| 205 | if ( EFI_ERROR ( Status )) {
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| 206 | //
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| 207 | // The controller is no longer in use
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| 208 | //
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| 209 | if ( bInUse ) {
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| 210 | gBS->UninstallMultipleProtocolInterfaces (
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| 211 | Controller,
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| 212 | &gEfiCallerIdGuid,
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| 213 | NULL,
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| 214 | NULL );
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| 215 | DEBUG (( DEBUG_POOL | DEBUG_INIT | DEBUG_INFO,
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| 216 | "Removed: gEfiCallerIdGuid from 0x%08x\r\n",
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| 217 | Controller ));
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| 218 | }
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| 219 | }
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| 220 | }
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| 221 | else {
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| 222 | DEBUG (( DEBUG_ERROR | DEBUG_INIT,
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| 223 | "ERROR - Failed to install gEfiCallerIdGuid on 0x%08x, Status: %r\r\n",
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| 224 | Controller,
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| 225 | Status ));
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| 226 | }
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| 227 |
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| 228 | //
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| 229 | // Release the service if necessary
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| 230 | //
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| 231 | if ( EFI_ERROR ( Status )) {
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| 232 | gBS->FreePool ( pService );
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| 233 | DEBUG (( DEBUG_POOL | DEBUG_INIT,
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| 234 | "0x%08x: Free pService, %d bytes\r\n",
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| 235 | pService,
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| 236 | sizeof ( *pService )));
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| 237 | pService = NULL;
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| 238 | }
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| 239 | }
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| 240 | else {
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| 241 | DEBUG (( DEBUG_ERROR | DEBUG_INIT,
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| 242 | "ERROR - Failed service allocation, Status: %r\r\n",
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| 243 | Status ));
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| 244 | }
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| 245 | }
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| 246 | }
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| 247 |
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| 248 | //
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| 249 | // Set the next network protocol
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| 250 | //
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| 251 | pSocketBinding += 1;
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| 252 | }
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| 253 |
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| 254 | //
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| 255 | // Display the driver start status
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| 256 | //
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| 257 | DBG_EXIT_STATUS ( Status );
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| 258 | return Status;
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| 259 | }
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| 260 |
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| 261 |
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| 262 | /**
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| 263 | Shutdown the connections to the network layer by locating the
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| 264 | tags on the network interfaces established by ::EslServiceConnect.
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| 265 | This routine shutdowns any activity on the network interface and
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| 266 | then frees the ::ESL_SERVICE structures.
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| 267 |
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| 268 | @param [in] BindingHandle Handle for protocol binding.
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| 269 | @param [in] Controller Handle of device to stop driver on.
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| 270 |
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| 271 | @retval EFI_SUCCESS This driver is removed Controller.
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| 272 | @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
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| 273 | @retval other This driver was not removed from this device.
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| 274 |
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| 275 | **/
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| 276 | EFI_STATUS
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| 277 | EFIAPI
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| 278 | EslServiceDisconnect (
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| 279 | IN EFI_HANDLE BindingHandle,
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| 280 | IN EFI_HANDLE Controller
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| 281 | )
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| 282 | {
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| 283 | UINT8 * pBuffer;
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| 284 | CONST ESL_SOCKET_BINDING * pEnd;
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| 285 | ESL_PORT * pPort;
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| 286 | ESL_SERVICE * pPreviousService;
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| 287 | ESL_SERVICE * pService;
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| 288 | ESL_SERVICE ** ppServiceListHead;
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| 289 | CONST ESL_SOCKET_BINDING * pSocketBinding;
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| 290 | EFI_STATUS Status;
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| 291 | EFI_TPL TplPrevious;
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| 292 |
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| 293 | DBG_ENTER ( );
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| 294 |
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| 295 | //
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| 296 | // Walk the list of network connection points in reverse order
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| 297 | //
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| 298 | pEnd = &cEslSocketBinding[0];
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| 299 | pSocketBinding = &pEnd[ cEslSocketBindingEntries ];
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| 300 | while ( pEnd < pSocketBinding ) {
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| 301 | //
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| 302 | // Set the next network protocol
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| 303 | //
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| 304 | pSocketBinding -= 1;
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| 305 |
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| 306 | //
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| 307 | // Determine if the driver connected
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| 308 | //
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| 309 | Status = gBS->OpenProtocol (
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| 310 | Controller,
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| 311 | (EFI_GUID *)pSocketBinding->pTagGuid,
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| 312 | (VOID **)&pService,
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| 313 | BindingHandle,
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| 314 | Controller,
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| 315 | EFI_OPEN_PROTOCOL_GET_PROTOCOL
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| 316 | );
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| 317 | if ( !EFI_ERROR ( Status )) {
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| 318 |
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| 319 | //
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| 320 | // Synchronize with the socket layer
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| 321 | //
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| 322 | RAISE_TPL ( TplPrevious, TPL_SOCKETS );
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| 323 |
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| 324 | //
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| 325 | // Walk the list of ports
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| 326 | //
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| 327 | pPort = pService->pPortList;
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| 328 | while ( NULL != pPort ) {
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| 329 | //
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| 330 | // Remove the port from the port list
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| 331 | //
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| 332 | pPort->pService = NULL;
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| 333 | pService->pPortList = pPort->pLinkService;
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| 334 |
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| 335 | //
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| 336 | // Close the port
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| 337 | //
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| 338 | EslSocketPortCloseStart ( pPort,
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| 339 | TRUE,
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| 340 | DEBUG_POOL | DEBUG_INIT );
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| 341 |
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| 342 | //
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| 343 | // Set the next port
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| 344 | //
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| 345 | pPort = pService->pPortList;
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| 346 | }
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| 347 |
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| 348 | //
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| 349 | // Remove the service from the service list
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| 350 | //
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| 351 | pBuffer = (UINT8 *)&mEslLayer;
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| 352 | pBuffer = &pBuffer[ pService->pSocketBinding->ServiceListOffset ];
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| 353 | ppServiceListHead = (ESL_SERVICE **)pBuffer;
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| 354 | pPreviousService = *ppServiceListHead;
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| 355 | if ( pService == pPreviousService ) {
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| 356 | //
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| 357 | // Remove the service from the beginning of the list
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| 358 | //
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| 359 | *ppServiceListHead = pService->pNext;
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| 360 | }
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| 361 | else {
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| 362 | //
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| 363 | // Remove the service from the middle of the list
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| 364 | //
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| 365 | while ( NULL != pPreviousService ) {
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| 366 | if ( pService == pPreviousService->pNext ) {
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| 367 | pPreviousService->pNext = pService->pNext;
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| 368 | break;
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| 369 | }
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| 370 | pPreviousService = pPreviousService->pNext;
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| 371 | }
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| 372 | }
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| 373 |
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| 374 | //
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| 375 | // Release the socket layer synchronization
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| 376 | //
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| 377 | RESTORE_TPL ( TplPrevious );
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| 378 |
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| 379 | //
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| 380 | // Break the driver connection
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| 381 | //
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| 382 | Status = gBS->UninstallMultipleProtocolInterfaces (
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| 383 | Controller,
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| 384 | pSocketBinding->pTagGuid,
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| 385 | pService,
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| 386 | NULL );
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| 387 | if ( !EFI_ERROR ( Status )) {
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| 388 | DEBUG (( DEBUG_POOL | DEBUG_INIT,
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| 389 | "Removed: %s TagGuid from 0x%08x\r\n",
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| 390 | pSocketBinding->pName,
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| 391 | Controller ));
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| 392 | }
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| 393 | else {
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| 394 | DEBUG (( DEBUG_ERROR | DEBUG_POOL | DEBUG_INIT,
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| 395 | "ERROR - Failed to removed %s TagGuid from 0x%08x, Status: %r\r\n",
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| 396 | pSocketBinding->pName,
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| 397 | Controller,
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| 398 | Status ));
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| 399 | }
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| 400 |
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| 401 | //
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| 402 | // Free the service structure
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| 403 | //
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| 404 | Status = gBS->FreePool ( pService );
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| 405 | if ( !EFI_ERROR ( Status )) {
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| 406 | DEBUG (( DEBUG_POOL | DEBUG_INIT,
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| 407 | "0x%08x: Free pService, %d bytes\r\n",
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| 408 | pService,
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| 409 | sizeof ( *pService )));
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| 410 | }
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| 411 | else {
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| 412 | DEBUG (( DEBUG_POOL | DEBUG_INIT,
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| 413 | "ERROR - Failed to free pService 0x%08x, Status: %r\r\n",
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| 414 | pService,
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| 415 | Status ));
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| 416 | }
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| 417 | pService = NULL;
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| 418 | }
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| 419 | }
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| 420 |
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| 421 | //
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| 422 | // The controller is no longer in use
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| 423 | //
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| 424 | gBS->UninstallMultipleProtocolInterfaces (
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| 425 | Controller,
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| 426 | &gEfiCallerIdGuid,
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| 427 | NULL,
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| 428 | NULL );
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| 429 | DEBUG (( DEBUG_POOL | DEBUG_INIT | DEBUG_INFO,
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| 430 | "Removed: gEfiCallerIdGuid from 0x%08x\r\n",
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| 431 | Controller ));
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| 432 |
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| 433 | //
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| 434 | // The driver is disconnected from the network controller
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| 435 | //
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| 436 | Status = EFI_SUCCESS;
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| 437 |
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| 438 | //
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| 439 | // Display the driver start status
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| 440 | //
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| 441 | DBG_EXIT_STATUS ( Status );
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| 442 | return Status;
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| 443 | }
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| 444 |
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| 445 |
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| 446 |
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| 447 | /**
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| 448 | Initialize the service layer
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| 449 |
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| 450 | @param [in] ImageHandle Handle for the image.
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| 451 |
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| 452 | **/
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| 453 | VOID
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| 454 | EFIAPI
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| 455 | EslServiceLoad (
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| 456 | IN EFI_HANDLE ImageHandle
|
|---|
| 457 | )
|
|---|
| 458 | {
|
|---|
| 459 | ESL_LAYER * pLayer;
|
|---|
| 460 |
|
|---|
| 461 | //
|
|---|
| 462 | // Save the image handle
|
|---|
| 463 | //
|
|---|
| 464 | pLayer = &mEslLayer;
|
|---|
| 465 | ZeroMem ( pLayer, sizeof ( *pLayer ));
|
|---|
| 466 | pLayer->Signature = LAYER_SIGNATURE;
|
|---|
| 467 | pLayer->ImageHandle = ImageHandle;
|
|---|
| 468 |
|
|---|
| 469 | //
|
|---|
| 470 | // Connect the service binding protocol to the image handle
|
|---|
| 471 | //
|
|---|
| 472 | pLayer->pServiceBinding = &mEfiServiceBinding;
|
|---|
| 473 | }
|
|---|
| 474 |
|
|---|
| 475 |
|
|---|
| 476 | /**
|
|---|
| 477 | Shutdown the service layer
|
|---|
| 478 |
|
|---|
| 479 | **/
|
|---|
| 480 | VOID
|
|---|
| 481 | EFIAPI
|
|---|
| 482 | EslServiceUnload (
|
|---|
| 483 | VOID
|
|---|
| 484 | )
|
|---|
| 485 | {
|
|---|
| 486 | ESL_LAYER * pLayer;
|
|---|
| 487 |
|
|---|
| 488 | //
|
|---|
| 489 | // Undo the work by ServiceLoad
|
|---|
| 490 | //
|
|---|
| 491 | pLayer = &mEslLayer;
|
|---|
| 492 | pLayer->ImageHandle = NULL;
|
|---|
| 493 | pLayer->pServiceBinding = NULL;
|
|---|
| 494 | }
|
|---|
