2 * Copyright (c) 2018 Metempsy Technology Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Jairo Balart
29 */
30
31#include "dev/arm/gic_v3.hh"
32
33#include "cpu/intr_control.hh"
34#include "debug/GIC.hh"
35#include "debug/Interrupt.hh"
36#include "dev/arm/gic_v3_cpu_interface.hh"
37#include "dev/arm/gic_v3_distributor.hh"
38#include "dev/arm/gic_v3_its.hh"
39#include "dev/arm/gic_v3_redistributor.hh"
40#include "dev/platform.hh"
41#include "mem/packet.hh"
42#include "mem/packet_access.hh"
43
44Gicv3::Gicv3(const Params * p)
45 : BaseGic(p)
46{
47}
48
49void
50Gicv3::init()
51{
52 distributor = new Gicv3Distributor(this, params()->it_lines);
53 redistributors.resize(sys->numContexts(), nullptr);
54 cpuInterfaces.resize(sys->numContexts(), nullptr);
55
56 panic_if(sys->numContexts() > params()->cpu_max,
57 "Exceeding maximum number of PEs supported by GICv3: "
58 "using %u while maximum is %u\n", sys->numContexts(),
59 params()->cpu_max);
60
61 for (int i = 0; i < sys->numContexts(); i++) {
62 redistributors[i] = new Gicv3Redistributor(this, i);
63 cpuInterfaces[i] = new Gicv3CPUInterface(this, i);
64 }
65
66 distRange = RangeSize(params()->dist_addr,
67 Gicv3Distributor::ADDR_RANGE_SIZE - 1);
68
69 redistSize = redistributors[0]->addrRangeSize;
70 redistRange = RangeSize(params()->redist_addr,
71 redistSize * sys->numContexts() - 1);
72
73 addrRanges = {distRange, redistRange};
74
75 distributor->init();
76
77 for (int i = 0; i < sys->numContexts(); i++) {
78 redistributors[i]->init();
79 cpuInterfaces[i]->init();
80 }
81
82 params()->its->setGIC(this);
83
84 BaseGic::init();
85}
86
| 14 * Copyright (c) 2018 Metempsy Technology Consulting
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Jairo Balart
41 */
42
43#include "dev/arm/gic_v3.hh"
44
45#include "cpu/intr_control.hh"
46#include "debug/GIC.hh"
47#include "debug/Interrupt.hh"
48#include "dev/arm/gic_v3_cpu_interface.hh"
49#include "dev/arm/gic_v3_distributor.hh"
50#include "dev/arm/gic_v3_its.hh"
51#include "dev/arm/gic_v3_redistributor.hh"
52#include "dev/platform.hh"
53#include "mem/packet.hh"
54#include "mem/packet_access.hh"
55
56Gicv3::Gicv3(const Params * p)
57 : BaseGic(p)
58{
59}
60
61void
62Gicv3::init()
63{
64 distributor = new Gicv3Distributor(this, params()->it_lines);
65 redistributors.resize(sys->numContexts(), nullptr);
66 cpuInterfaces.resize(sys->numContexts(), nullptr);
67
68 panic_if(sys->numContexts() > params()->cpu_max,
69 "Exceeding maximum number of PEs supported by GICv3: "
70 "using %u while maximum is %u\n", sys->numContexts(),
71 params()->cpu_max);
72
73 for (int i = 0; i < sys->numContexts(); i++) {
74 redistributors[i] = new Gicv3Redistributor(this, i);
75 cpuInterfaces[i] = new Gicv3CPUInterface(this, i);
76 }
77
78 distRange = RangeSize(params()->dist_addr,
79 Gicv3Distributor::ADDR_RANGE_SIZE - 1);
80
81 redistSize = redistributors[0]->addrRangeSize;
82 redistRange = RangeSize(params()->redist_addr,
83 redistSize * sys->numContexts() - 1);
84
85 addrRanges = {distRange, redistRange};
86
87 distributor->init();
88
89 for (int i = 0; i < sys->numContexts(); i++) {
90 redistributors[i]->init();
91 cpuInterfaces[i]->init();
92 }
93
94 params()->its->setGIC(this);
95
96 BaseGic::init();
97}
98
|
98Tick
99Gicv3::read(PacketPtr pkt)
100{
101 const Addr addr = pkt->getAddr();
102 const size_t size = pkt->getSize();
103 bool is_secure_access = pkt->isSecure();
104 uint64_t resp = 0;
105 Tick delay = 0;
106
107 if (distRange.contains(addr)) {
108 const Addr daddr = addr - distRange.start();
109 panic_if(!distributor, "Distributor is null!");
110 resp = distributor->read(daddr, size, is_secure_access);
111 delay = params()->dist_pio_delay;
112 DPRINTF(GIC, "Gicv3::read(): (distributor) context_id %d register %#x "
113 "size %d is_secure_access %d (value %#x)\n",
114 pkt->req->contextId(), daddr, size, is_secure_access, resp);
115 } else if (redistRange.contains(addr)) {
116 Addr daddr = (addr - redistRange.start()) % redistSize;
117
118 Gicv3Redistributor *redist = getRedistributorByAddr(addr);
119 resp = redist->read(daddr, size, is_secure_access);
120
121 delay = params()->redist_pio_delay;
122 DPRINTF(GIC, "Gicv3::read(): (redistributor %d) context_id %d "
123 "register %#x size %d is_secure_access %d (value %#x)\n",
124 redist->processorNumber(), pkt->req->contextId(), daddr, size,
125 is_secure_access, resp);
126 } else {
127 panic("Gicv3::read(): unknown address %#x\n", addr);
128 }
129
130 pkt->setUintX(resp, LittleEndianByteOrder);
131 pkt->makeAtomicResponse();
132 return delay;
133}
134
135Tick
136Gicv3::write(PacketPtr pkt)
137{
138 const size_t size = pkt->getSize();
139 uint64_t data = pkt->getUintX(LittleEndianByteOrder);
140 const Addr addr = pkt->getAddr();
141 bool is_secure_access = pkt->isSecure();
142 Tick delay = 0;
143
144 if (distRange.contains(addr)) {
145 const Addr daddr = addr - distRange.start();
146 panic_if(!distributor, "Distributor is null!");
147 DPRINTF(GIC, "Gicv3::write(): (distributor) context_id %d "
148 "register %#x size %d is_secure_access %d value %#x\n",
149 pkt->req->contextId(), daddr, size, is_secure_access, data);
150 distributor->write(daddr, data, size, is_secure_access);
151 delay = params()->dist_pio_delay;
152 } else if (redistRange.contains(addr)) {
153 Addr daddr = (addr - redistRange.start()) % redistSize;
154
155 Gicv3Redistributor *redist = getRedistributorByAddr(addr);
156 DPRINTF(GIC, "Gicv3::write(): (redistributor %d) context_id %d "
157 "register %#x size %d is_secure_access %d value %#x\n",
158 redist->processorNumber(), pkt->req->contextId(), daddr, size,
159 is_secure_access, data);
160
161 redist->write(daddr, data, size, is_secure_access);
162
163 delay = params()->redist_pio_delay;
164 } else {
165 panic("Gicv3::write(): unknown address %#x\n", addr);
166 }
167
168 pkt->makeAtomicResponse();
169 return delay;
170}
171
172void
173Gicv3::sendInt(uint32_t int_id)
174{
175 panic_if(int_id < Gicv3::SGI_MAX + Gicv3::PPI_MAX, "Invalid SPI!");
176 panic_if(int_id >= Gicv3::INTID_SECURE, "Invalid SPI!");
177 DPRINTF(Interrupt, "Gicv3::sendInt(): received SPI %d\n", int_id);
178 distributor->sendInt(int_id);
179}
180
181void
182Gicv3::clearInt(uint32_t number)
183{
184 distributor->deassertSPI(number);
185}
186
187void
188Gicv3::sendPPInt(uint32_t int_id, uint32_t cpu)
189{
190 panic_if(cpu >= redistributors.size(), "Invalid cpuID sending PPI!");
191 panic_if(int_id < Gicv3::SGI_MAX, "Invalid PPI!");
192 panic_if(int_id >= Gicv3::SGI_MAX + Gicv3::PPI_MAX, "Invalid PPI!");
193 DPRINTF(Interrupt, "Gicv3::sendPPInt(): received PPI %d cpuTarget %#x\n",
194 int_id, cpu);
195 redistributors[cpu]->sendPPInt(int_id);
196}
197
198void
199Gicv3::clearPPInt(uint32_t num, uint32_t cpu)
200{
201}
202
203void
204Gicv3::postInt(uint32_t cpu, ArmISA::InterruptTypes int_type)
205{
206 platform->intrctrl->post(cpu, int_type, 0);
207}
208
209void
210Gicv3::deassertInt(uint32_t cpu, ArmISA::InterruptTypes int_type)
211{
212 platform->intrctrl->clear(cpu, int_type, 0);
213}
214
215Gicv3Redistributor *
216Gicv3::getRedistributorByAffinity(uint32_t affinity) const
217{
218 for (auto & redistributor : redistributors) {
219 if (redistributor->getAffinity() == affinity) {
220 return redistributor;
221 }
222 }
223
224 return nullptr;
225}
226
227Gicv3Redistributor *
228Gicv3::getRedistributorByAddr(Addr addr) const
229{
230 panic_if(!redistRange.contains(addr),
231 "Address not pointing to a valid redistributor\n");
232
233 const Addr daddr = addr - redistRange.start();
234 const uint32_t redistributor_id = daddr / redistSize;
235
236 panic_if(redistributor_id >= redistributors.size(),
237 "Invalid redistributor_id!");
238 panic_if(!redistributors[redistributor_id], "Redistributor is null!");
239
240 return redistributors[redistributor_id];
241}
242
243void
244Gicv3::serialize(CheckpointOut & cp) const
245{
246 distributor->serializeSection(cp, "distributor");
247
248 for (uint32_t redistributor_id = 0;
249 redistributor_id < redistributors.size(); redistributor_id++)
250 redistributors[redistributor_id]->serializeSection(cp,
251 csprintf("redistributors.%i", redistributor_id));
252
253 for (uint32_t cpu_interface_id = 0;
254 cpu_interface_id < cpuInterfaces.size(); cpu_interface_id++)
255 cpuInterfaces[cpu_interface_id]->serializeSection(cp,
256 csprintf("cpuInterface.%i", cpu_interface_id));
257}
258
259void
260Gicv3::unserialize(CheckpointIn & cp)
261{
262 getSystem()->setGIC(this);
263
264 distributor->unserializeSection(cp, "distributor");
265
266 for (uint32_t redistributor_id = 0;
267 redistributor_id < redistributors.size(); redistributor_id++)
268 redistributors[redistributor_id]->unserializeSection(cp,
269 csprintf("redistributors.%i", redistributor_id));
270
271 for (uint32_t cpu_interface_id = 0;
272 cpu_interface_id < cpuInterfaces.size(); cpu_interface_id++)
273 cpuInterfaces[cpu_interface_id]->unserializeSection(cp,
274 csprintf("cpuInterface.%i", cpu_interface_id));
275}
276
277Gicv3 *
278Gicv3Params::create()
279{
280 return new Gicv3(this);
281}
| 99Tick
100Gicv3::read(PacketPtr pkt)
101{
102 const Addr addr = pkt->getAddr();
103 const size_t size = pkt->getSize();
104 bool is_secure_access = pkt->isSecure();
105 uint64_t resp = 0;
106 Tick delay = 0;
107
108 if (distRange.contains(addr)) {
109 const Addr daddr = addr - distRange.start();
110 panic_if(!distributor, "Distributor is null!");
111 resp = distributor->read(daddr, size, is_secure_access);
112 delay = params()->dist_pio_delay;
113 DPRINTF(GIC, "Gicv3::read(): (distributor) context_id %d register %#x "
114 "size %d is_secure_access %d (value %#x)\n",
115 pkt->req->contextId(), daddr, size, is_secure_access, resp);
116 } else if (redistRange.contains(addr)) {
117 Addr daddr = (addr - redistRange.start()) % redistSize;
118
119 Gicv3Redistributor *redist = getRedistributorByAddr(addr);
120 resp = redist->read(daddr, size, is_secure_access);
121
122 delay = params()->redist_pio_delay;
123 DPRINTF(GIC, "Gicv3::read(): (redistributor %d) context_id %d "
124 "register %#x size %d is_secure_access %d (value %#x)\n",
125 redist->processorNumber(), pkt->req->contextId(), daddr, size,
126 is_secure_access, resp);
127 } else {
128 panic("Gicv3::read(): unknown address %#x\n", addr);
129 }
130
131 pkt->setUintX(resp, LittleEndianByteOrder);
132 pkt->makeAtomicResponse();
133 return delay;
134}
135
136Tick
137Gicv3::write(PacketPtr pkt)
138{
139 const size_t size = pkt->getSize();
140 uint64_t data = pkt->getUintX(LittleEndianByteOrder);
141 const Addr addr = pkt->getAddr();
142 bool is_secure_access = pkt->isSecure();
143 Tick delay = 0;
144
145 if (distRange.contains(addr)) {
146 const Addr daddr = addr - distRange.start();
147 panic_if(!distributor, "Distributor is null!");
148 DPRINTF(GIC, "Gicv3::write(): (distributor) context_id %d "
149 "register %#x size %d is_secure_access %d value %#x\n",
150 pkt->req->contextId(), daddr, size, is_secure_access, data);
151 distributor->write(daddr, data, size, is_secure_access);
152 delay = params()->dist_pio_delay;
153 } else if (redistRange.contains(addr)) {
154 Addr daddr = (addr - redistRange.start()) % redistSize;
155
156 Gicv3Redistributor *redist = getRedistributorByAddr(addr);
157 DPRINTF(GIC, "Gicv3::write(): (redistributor %d) context_id %d "
158 "register %#x size %d is_secure_access %d value %#x\n",
159 redist->processorNumber(), pkt->req->contextId(), daddr, size,
160 is_secure_access, data);
161
162 redist->write(daddr, data, size, is_secure_access);
163
164 delay = params()->redist_pio_delay;
165 } else {
166 panic("Gicv3::write(): unknown address %#x\n", addr);
167 }
168
169 pkt->makeAtomicResponse();
170 return delay;
171}
172
173void
174Gicv3::sendInt(uint32_t int_id)
175{
176 panic_if(int_id < Gicv3::SGI_MAX + Gicv3::PPI_MAX, "Invalid SPI!");
177 panic_if(int_id >= Gicv3::INTID_SECURE, "Invalid SPI!");
178 DPRINTF(Interrupt, "Gicv3::sendInt(): received SPI %d\n", int_id);
179 distributor->sendInt(int_id);
180}
181
182void
183Gicv3::clearInt(uint32_t number)
184{
185 distributor->deassertSPI(number);
186}
187
188void
189Gicv3::sendPPInt(uint32_t int_id, uint32_t cpu)
190{
191 panic_if(cpu >= redistributors.size(), "Invalid cpuID sending PPI!");
192 panic_if(int_id < Gicv3::SGI_MAX, "Invalid PPI!");
193 panic_if(int_id >= Gicv3::SGI_MAX + Gicv3::PPI_MAX, "Invalid PPI!");
194 DPRINTF(Interrupt, "Gicv3::sendPPInt(): received PPI %d cpuTarget %#x\n",
195 int_id, cpu);
196 redistributors[cpu]->sendPPInt(int_id);
197}
198
199void
200Gicv3::clearPPInt(uint32_t num, uint32_t cpu)
201{
202}
203
204void
205Gicv3::postInt(uint32_t cpu, ArmISA::InterruptTypes int_type)
206{
207 platform->intrctrl->post(cpu, int_type, 0);
208}
209
210void
211Gicv3::deassertInt(uint32_t cpu, ArmISA::InterruptTypes int_type)
212{
213 platform->intrctrl->clear(cpu, int_type, 0);
214}
215
216Gicv3Redistributor *
217Gicv3::getRedistributorByAffinity(uint32_t affinity) const
218{
219 for (auto & redistributor : redistributors) {
220 if (redistributor->getAffinity() == affinity) {
221 return redistributor;
222 }
223 }
224
225 return nullptr;
226}
227
228Gicv3Redistributor *
229Gicv3::getRedistributorByAddr(Addr addr) const
230{
231 panic_if(!redistRange.contains(addr),
232 "Address not pointing to a valid redistributor\n");
233
234 const Addr daddr = addr - redistRange.start();
235 const uint32_t redistributor_id = daddr / redistSize;
236
237 panic_if(redistributor_id >= redistributors.size(),
238 "Invalid redistributor_id!");
239 panic_if(!redistributors[redistributor_id], "Redistributor is null!");
240
241 return redistributors[redistributor_id];
242}
243
244void
245Gicv3::serialize(CheckpointOut & cp) const
246{
247 distributor->serializeSection(cp, "distributor");
248
249 for (uint32_t redistributor_id = 0;
250 redistributor_id < redistributors.size(); redistributor_id++)
251 redistributors[redistributor_id]->serializeSection(cp,
252 csprintf("redistributors.%i", redistributor_id));
253
254 for (uint32_t cpu_interface_id = 0;
255 cpu_interface_id < cpuInterfaces.size(); cpu_interface_id++)
256 cpuInterfaces[cpu_interface_id]->serializeSection(cp,
257 csprintf("cpuInterface.%i", cpu_interface_id));
258}
259
260void
261Gicv3::unserialize(CheckpointIn & cp)
262{
263 getSystem()->setGIC(this);
264
265 distributor->unserializeSection(cp, "distributor");
266
267 for (uint32_t redistributor_id = 0;
268 redistributor_id < redistributors.size(); redistributor_id++)
269 redistributors[redistributor_id]->unserializeSection(cp,
270 csprintf("redistributors.%i", redistributor_id));
271
272 for (uint32_t cpu_interface_id = 0;
273 cpu_interface_id < cpuInterfaces.size(); cpu_interface_id++)
274 cpuInterfaces[cpu_interface_id]->unserializeSection(cp,
275 csprintf("cpuInterface.%i", cpu_interface_id));
276}
277
278Gicv3 *
279Gicv3Params::create()
280{
281 return new Gicv3(this);
282}
|