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3bb7aff3 | 1 | /** @file\r |
2 | Copyright (c) 2004 - 2007, Intel Corporation\r | |
3 | All rights reserved. This program and the accompanying materials\r | |
4 | are licensed and made available under the terms and conditions of the BSD License\r | |
5 | which accompanies this distribution. The full text of the license may be found at\r | |
6 | http://opensource.org/licenses/bsd-license.php\r | |
7 | \r | |
8 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
9 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
10 | \r | |
11 | Module name:\r | |
12 | receive.c\r | |
13 | \r | |
14 | Abstract:\r | |
15 | \r | |
16 | Revision history:\r | |
17 | 2000-Feb-03 M(f)J Genesis.\r | |
18 | \r | |
19 | **/\r | |
20 | \r | |
21 | \r | |
22 | #include "Snp.h"\r | |
23 | \r | |
24 | /**\r | |
25 | this routine calls undi to receive a packet and fills in the data in the\r | |
26 | input pointers!\r | |
27 | \r | |
28 | @param snp pointer to snp driver structure\r | |
29 | @param BufferPtr pointer to the memory for the received data\r | |
30 | @param BuffSizePtr is a pointer to the length of the buffer on entry and\r | |
31 | contains the length of the received data on return\r | |
32 | @param HeaderSizePtr pointer to the header portion of the data received.\r | |
33 | @param SourceAddrPtr optional parameter, is a pointer to contain the\r | |
34 | source ethernet address on return\r | |
35 | @param DestinationAddrPtr optional parameter, is a pointer to contain the\r | |
36 | destination ethernet address on return\r | |
37 | @param ProtocolPtr optional parameter, is a pointer to contain the\r | |
38 | protocol type from the ethernet header on return\r | |
39 | \r | |
40 | \r | |
41 | **/\r | |
42 | STATIC\r | |
43 | EFI_STATUS\r | |
44 | pxe_receive (\r | |
45 | SNP_DRIVER *snp,\r | |
46 | VOID *BufferPtr,\r | |
47 | UINTN *BuffSizePtr,\r | |
48 | UINTN *HeaderSizePtr,\r | |
49 | EFI_MAC_ADDRESS *SourceAddrPtr,\r | |
50 | EFI_MAC_ADDRESS *DestinationAddrPtr,\r | |
51 | UINT16 *ProtocolPtr\r | |
52 | )\r | |
53 | {\r | |
54 | PXE_CPB_RECEIVE *cpb;\r | |
55 | PXE_DB_RECEIVE *db;\r | |
56 | UINTN buf_size;\r | |
57 | \r | |
58 | cpb = snp->cpb;\r | |
59 | db = snp->db;\r | |
60 | buf_size = *BuffSizePtr;\r | |
61 | \r | |
62 | cpb->BufferAddr = (UINT64)(UINTN) BufferPtr;\r | |
63 | cpb->BufferLen = (UINT32) *BuffSizePtr;\r | |
64 | \r | |
65 | cpb->reserved = 0;\r | |
66 | \r | |
67 | snp->cdb.OpCode = PXE_OPCODE_RECEIVE;\r | |
68 | snp->cdb.OpFlags = PXE_OPFLAGS_NOT_USED;\r | |
69 | \r | |
70 | snp->cdb.CPBsize = sizeof (PXE_CPB_RECEIVE);\r | |
71 | snp->cdb.CPBaddr = (UINT64)(UINTN) cpb;\r | |
72 | \r | |
73 | snp->cdb.DBsize = sizeof (PXE_DB_RECEIVE);\r | |
74 | snp->cdb.DBaddr = (UINT64)(UINTN) db;\r | |
75 | \r | |
76 | snp->cdb.StatCode = PXE_STATCODE_INITIALIZE;\r | |
77 | snp->cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;\r | |
78 | snp->cdb.IFnum = snp->if_num;\r | |
79 | snp->cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;\r | |
80 | \r | |
81 | //\r | |
82 | // Issue UNDI command and check result.\r | |
83 | //\r | |
84 | DEBUG ((EFI_D_NET, "\nsnp->undi.receive () "));\r | |
85 | \r | |
86 | (*snp->issue_undi32_command) ((UINT64)(UINTN) &snp->cdb);\r | |
87 | \r | |
88 | switch (snp->cdb.StatCode) {\r | |
89 | case PXE_STATCODE_SUCCESS:\r | |
90 | break;\r | |
91 | \r | |
92 | case PXE_STATCODE_NO_DATA:\r | |
93 | DEBUG (\r | |
94 | (EFI_D_NET,\r | |
95 | "\nsnp->undi.receive () %xh:%xh\n",\r | |
96 | snp->cdb.StatFlags,\r | |
97 | snp->cdb.StatCode)\r | |
98 | );\r | |
99 | \r | |
100 | return EFI_NOT_READY;\r | |
101 | \r | |
102 | default:\r | |
103 | DEBUG (\r | |
104 | (EFI_D_ERROR,\r | |
105 | "\nsnp->undi.receive() %xh:%xh\n",\r | |
106 | snp->cdb.StatFlags,\r | |
107 | snp->cdb.StatCode)\r | |
108 | );\r | |
109 | \r | |
110 | return EFI_DEVICE_ERROR;\r | |
111 | }\r | |
112 | \r | |
113 | *BuffSizePtr = db->FrameLen;\r | |
114 | \r | |
115 | if (HeaderSizePtr != NULL) {\r | |
116 | *HeaderSizePtr = db->MediaHeaderLen;\r | |
117 | }\r | |
118 | \r | |
119 | if (SourceAddrPtr != NULL) {\r | |
120 | CopyMem (SourceAddrPtr, &db->SrcAddr, snp->mode.HwAddressSize);\r | |
121 | }\r | |
122 | \r | |
123 | if (DestinationAddrPtr != NULL) {\r | |
124 | CopyMem (DestinationAddrPtr, &db->DestAddr, snp->mode.HwAddressSize);\r | |
125 | }\r | |
126 | \r | |
127 | if (ProtocolPtr != NULL) {\r | |
128 | *ProtocolPtr = (UINT16) PXE_SWAP_UINT16 (db->Protocol); /* we need to do the byte swapping */\r | |
129 | }\r | |
130 | \r | |
131 | return (*BuffSizePtr <= buf_size) ? EFI_SUCCESS : EFI_BUFFER_TOO_SMALL;\r | |
132 | }\r | |
133 | \r | |
134 | \r | |
135 | /**\r | |
136 | This is the SNP interface routine for receiving network data.\r | |
137 | This routine basically retrieves snp structure, checks the SNP state and\r | |
138 | calls the pxe_receive routine to actually do the receive!\r | |
139 | \r | |
140 | @param this context pointer\r | |
141 | @param HeaderSizePtr optional parameter and is a pointer to the header\r | |
142 | portion of the data received.\r | |
143 | @param BuffSizePtr is a pointer to the length of the buffer on entry and\r | |
144 | contains the length of the received data on return\r | |
145 | @param BufferPtr pointer to the memory for the received data\r | |
146 | @param SourceAddrPtr optional parameter, is a pointer to contain the\r | |
147 | source ethernet address on return\r | |
148 | @param DestinationAddrPtr optional parameter, is a pointer to contain the\r | |
149 | destination ethernet address on return\r | |
150 | @param ProtocolPtr optional parameter, is a pointer to contain the\r | |
151 | protocol type from the ethernet header on return\r | |
152 | \r | |
153 | \r | |
154 | **/\r | |
155 | EFI_STATUS\r | |
156 | EFIAPI\r | |
157 | snp_undi32_receive (\r | |
158 | IN EFI_SIMPLE_NETWORK_PROTOCOL * this,\r | |
159 | OUT UINTN *HeaderSizePtr OPTIONAL,\r | |
160 | IN OUT UINTN *BuffSizePtr,\r | |
161 | OUT VOID *BufferPtr,\r | |
162 | OUT EFI_MAC_ADDRESS * SourceAddrPtr OPTIONAL,\r | |
163 | OUT EFI_MAC_ADDRESS * DestinationAddrPtr OPTIONAL,\r | |
164 | OUT UINT16 *ProtocolPtr OPTIONAL\r | |
165 | )\r | |
166 | {\r | |
167 | SNP_DRIVER *snp;\r | |
168 | EFI_TPL OldTpl;\r | |
169 | EFI_STATUS Status;\r | |
170 | \r | |
171 | if (this == NULL) {\r | |
172 | return EFI_INVALID_PARAMETER;\r | |
173 | }\r | |
174 | \r | |
175 | snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);\r | |
176 | \r | |
177 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
178 | \r | |
179 | switch (snp->mode.State) {\r | |
180 | case EfiSimpleNetworkInitialized:\r | |
181 | break;\r | |
182 | \r | |
183 | case EfiSimpleNetworkStopped:\r | |
184 | Status = EFI_NOT_STARTED;\r | |
185 | goto ON_EXIT;\r | |
186 | \r | |
187 | default:\r | |
188 | Status = EFI_DEVICE_ERROR;\r | |
189 | goto ON_EXIT;\r | |
190 | }\r | |
191 | \r | |
192 | if ((BuffSizePtr == NULL) || (BufferPtr == NULL)) {\r | |
193 | Status = EFI_INVALID_PARAMETER;\r | |
194 | goto ON_EXIT;\r | |
195 | }\r | |
196 | \r | |
197 | if (!snp->mode.ReceiveFilterSetting) {\r | |
198 | Status = EFI_DEVICE_ERROR;\r | |
199 | goto ON_EXIT;\r | |
200 | }\r | |
201 | \r | |
202 | Status = pxe_receive (\r | |
203 | snp,\r | |
204 | BufferPtr,\r | |
205 | BuffSizePtr,\r | |
206 | HeaderSizePtr,\r | |
207 | SourceAddrPtr,\r | |
208 | DestinationAddrPtr,\r | |
209 | ProtocolPtr\r | |
210 | );\r | |
211 | \r | |
212 | ON_EXIT:\r | |
213 | gBS->RestoreTPL (OldTpl);\r | |
214 | \r | |
215 | return Status;\r | |
216 | }\r |