1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/*
* Copyright 2019 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "p2a.hpp"
#include "data.hpp"
#include "flags.hpp"
#include "pci.hpp"
#include <cstdint>
#include <cstring>
#include <ipmiblob/blob_errors.hpp>
#include <memory>
#include <string>
namespace host_tool
{
namespace
{
void disablePciBridge(HostIoInterface* io, std::size_t address)
{
/* Read current value, and just blindly unset the bit. */
std::uint32_t value;
if (!io->read(address + aspeedP2aConfig, sizeof(value), &value))
{
return;
}
value &= ~p2ABridgeEnabled;
io->write(address + aspeedP2aConfig, sizeof(value), &value);
}
} // namespace
bool P2aDataHandler::sendContents(const std::string& input,
std::uint16_t session)
{
PciDevice result;
PciFilter filter;
bool found = false;
pciaddr_t bar1;
bool returnValue = false;
int inputFd = -1;
ipmi_flash::PciConfigResponse pciResp;
std::int64_t fileSize;
const std::uint32_t p2aLength = aspeedP2aOffset;
std::unique_ptr<std::uint8_t[]> readBuffer;
filter.vid = aspeedVendorId;
filter.did = aspeedDeviceId;
/* Find the ASPEED PCI device entry we want. */
auto output = pci->getPciDevices(filter);
for (const auto& d : output)
{
std::fprintf(stderr, "[0x%x 0x%x] ", d.vid, d.did);
/* Verify it's a memory-based bar -- we want bar1. */
bar1 = d.bars[1];
if ((bar1 & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO)
{
/* We want it to not be IO-based access. */
continue;
}
/* For now capture the entire device even if we're only using BAR1 */
result = d;
found = true;
break;
}
if (!found)
{
return false;
}
std::fprintf(stderr, "\n");
/* We sent the open command before this, so the window should be open and
* the bridge enabled on the BMC.
*/
std::uint32_t value;
if (!io->read(bar1 + aspeedP2aConfig, sizeof(value), &value))
{
std::fprintf(stderr, "PCI config read failed\n");
return false;
}
if (0 == (value & p2ABridgeEnabled))
{
std::fprintf(stderr, "Bridge not enabled - Enabling from host\n");
value |= p2ABridgeEnabled;
if (!io->write(bar1 + aspeedP2aConfig, sizeof(value), &value))
{
std::fprintf(stderr, "PCI config write failed\n");
return false;
}
}
/* From this point down we need to disable the bridge. */
std::fprintf(stderr, "The bridge is enabled!\n");
/* Read the configuration via blobs metadata (stat). */
ipmiblob::StatResponse stat = blob->getStat(session);
if (stat.metadata.size() != sizeof(ipmi_flash::PciConfigResponse))
{
std::fprintf(stderr, "Didn't receive expected size of metadata for "
"PCI Configuration response\n");
goto exit;
}
std::memcpy(&pciResp, stat.metadata.data(), sizeof(pciResp));
std::fprintf(stderr, "Received address: 0x%x\n", pciResp.address);
/* Configure the mmio to point there. */
if (!io->write(bar1 + aspeedP2aBridge, sizeof(pciResp.address),
&pciResp.address))
{
// Failed to set it up, so fall back.
std::fprintf(stderr, "Failed to update the bridge address\n");
goto exit;
}
/* For data blocks in 64kb, stage data, and send blob write command. */
inputFd = sys->open(input.c_str(), 0);
if (inputFd < 0)
{
std::fprintf(stderr, "Unable to open file: '%s'\n", input.c_str());
goto exit;
}
fileSize = sys->getSize(input.c_str());
if (fileSize == 0)
{
std::fprintf(stderr, "Zero-length file, or other file access error\n");
goto exit;
}
progress->start(fileSize);
readBuffer = std::make_unique<std::uint8_t[]>(p2aLength);
if (nullptr == readBuffer)
{
std::fprintf(stderr, "Unable to allocate memory for read buffer.\n");
goto exit;
}
try
{
int bytesRead = 0;
std::uint32_t offset = 0;
do
{
bytesRead = sys->read(inputFd, readBuffer.get(), p2aLength);
if (bytesRead > 0)
{
/* TODO: Will likely need to store an rv somewhere to know
* when we're exiting from failure.
*/
if (!io->write(bar1 + aspeedP2aOffset, bytesRead,
readBuffer.get()))
{
std::fprintf(stderr,
"Failed to write to region in memory!\n");
goto exit;
}
/* Ok, so the data is staged, now send the blob write with
* the details.
*/
struct ipmi_flash::ExtChunkHdr chunk;
chunk.length = bytesRead;
std::vector<std::uint8_t> chunkBytes(sizeof(chunk));
std::memcpy(chunkBytes.data(), &chunk, sizeof(chunk));
/* This doesn't return anything on success. */
blob->writeBytes(session, offset, chunkBytes);
offset += bytesRead;
progress->updateProgress(bytesRead);
}
} while (bytesRead > 0);
}
catch (const ipmiblob::BlobException& b)
{
goto exit;
}
/* defaults to failure. */
returnValue = true;
exit:
/* disable PCI bridge. */
disablePciBridge(io, bar1);
/* close input file. */
if (inputFd != -1)
{
sys->close(inputFd);
}
return returnValue;
}
} // namespace host_tool
|
