1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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.
| 1/*
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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
29#include <string>
30
31#include "arch/alpha/ev5.hh"
32#include "arch/alpha/vtophys.hh"
33#include "base/chunk_generator.hh"
34#include "base/trace.hh"
35#include "cpu/exec_context.hh"
36#include "mem/vport.hh"
37
38using namespace std;
39using namespace AlphaISA;
40
41AlphaISA::PageTableEntry
42AlphaISA::kernel_pte_lookup(FunctionalPort *mem, Addr ptbr, AlphaISA::VAddr vaddr)
43{
44 Addr level1_pte = ptbr + vaddr.level1();
45 AlphaISA::PageTableEntry level1 = mem->read<uint64_t>(level1_pte);
46 if (!level1.valid()) {
47 DPRINTF(VtoPhys, "level 1 PTE not valid, va = %#\n", vaddr);
48 return 0;
49 }
50
51 Addr level2_pte = level1.paddr() + vaddr.level2();
52 AlphaISA::PageTableEntry level2 = mem->read<uint64_t>(level2_pte);
53 if (!level2.valid()) {
54 DPRINTF(VtoPhys, "level 2 PTE not valid, va = %#x\n", vaddr);
55 return 0;
56 }
57
58 Addr level3_pte = level2.paddr() + vaddr.level3();
59 AlphaISA::PageTableEntry level3 = mem->read<uint64_t>(level3_pte);
60 if (!level3.valid()) {
61 DPRINTF(VtoPhys, "level 3 PTE not valid, va = %#x\n", vaddr);
62 return 0;
63 }
64 return level3;
65}
66
67Addr
68AlphaISA::vtophys(Addr vaddr)
69{
70 Addr paddr = 0;
71 if (AlphaISA::IsUSeg(vaddr))
72 DPRINTF(VtoPhys, "vtophys: invalid vaddr %#x", vaddr);
73 else if (AlphaISA::IsK0Seg(vaddr))
74 paddr = AlphaISA::K0Seg2Phys(vaddr);
75 else
76 panic("vtophys: ptbr is not set on virtual lookup");
77
78 DPRINTF(VtoPhys, "vtophys(%#x) -> %#x\n", vaddr, paddr);
79
80 return paddr;
81}
82
83Addr
84AlphaISA::vtophys(ExecContext *xc, Addr addr)
85{
86 AlphaISA::VAddr vaddr = addr;
87 Addr ptbr = xc->readMiscReg(AlphaISA::IPR_PALtemp20);
88 Addr paddr = 0;
89 //@todo Andrew couldn't remember why he commented some of this code
90 //so I put it back in. Perhaps something to do with gdb debugging?
91 if (AlphaISA::PcPAL(vaddr) && (vaddr < EV5::PalMax)) {
92 paddr = vaddr & ~ULL(1);
93 } else {
94 if (AlphaISA::IsK0Seg(vaddr)) {
95 paddr = AlphaISA::K0Seg2Phys(vaddr);
96 } else if (!ptbr) {
97 paddr = vaddr;
98 } else {
99 AlphaISA::PageTableEntry pte =
100 kernel_pte_lookup(xc->getPhysPort(), ptbr, vaddr);
101 if (pte.valid())
102 paddr = pte.paddr() | vaddr.offset();
103 }
104 }
105
106
107 DPRINTF(VtoPhys, "vtophys(%#x) -> %#x\n", vaddr, paddr);
108
109 return paddr;
110}
111
112
113void
114AlphaISA::CopyOut(ExecContext *xc, void *dest, Addr src, size_t cplen)
115{
116 uint8_t *dst = (uint8_t *)dest;
117 VirtualPort *vp = xc->getVirtPort(xc);
118
119 vp->readBlob(src, dst, cplen);
120
121 xc->delVirtPort(vp);
122
123}
124
125void
126AlphaISA::CopyIn(ExecContext *xc, Addr dest, void *source, size_t cplen)
127{
128 uint8_t *src = (uint8_t *)source;
129 VirtualPort *vp = xc->getVirtPort(xc);
130
131 vp->writeBlob(dest, src, cplen);
132
133 xc->delVirtPort(vp);
134}
135
136void
137AlphaISA::CopyStringOut(ExecContext *xc, char *dst, Addr vaddr, size_t maxlen)
138{
139 int len = 0;
140 VirtualPort *vp = xc->getVirtPort(xc);
141
142 do {
143 vp->readBlob(vaddr++, (uint8_t*)dst++, 1);
144 len++;
145 } while (len < maxlen && dst[len] != 0 );
146
147 xc->delVirtPort(vp);
148 dst[len] = 0;
149}
150
151void
152AlphaISA::CopyStringIn(ExecContext *xc, char *src, Addr vaddr)
153{
154 VirtualPort *vp = xc->getVirtPort(xc);
155 for (ChunkGenerator gen(vaddr, strlen(src), AlphaISA::PageBytes); !gen.done();
156 gen.next())
157 {
158 vp->writeBlob(gen.addr(), (uint8_t*)src, gen.size());
159 src += gen.size();
160 }
161 xc->delVirtPort(vp);
162}
| 31 */
32
33#include <string>
34
35#include "arch/alpha/ev5.hh"
36#include "arch/alpha/vtophys.hh"
37#include "base/chunk_generator.hh"
38#include "base/trace.hh"
39#include "cpu/exec_context.hh"
40#include "mem/vport.hh"
41
42using namespace std;
43using namespace AlphaISA;
44
45AlphaISA::PageTableEntry
46AlphaISA::kernel_pte_lookup(FunctionalPort *mem, Addr ptbr, AlphaISA::VAddr vaddr)
47{
48 Addr level1_pte = ptbr + vaddr.level1();
49 AlphaISA::PageTableEntry level1 = mem->read<uint64_t>(level1_pte);
50 if (!level1.valid()) {
51 DPRINTF(VtoPhys, "level 1 PTE not valid, va = %#\n", vaddr);
52 return 0;
53 }
54
55 Addr level2_pte = level1.paddr() + vaddr.level2();
56 AlphaISA::PageTableEntry level2 = mem->read<uint64_t>(level2_pte);
57 if (!level2.valid()) {
58 DPRINTF(VtoPhys, "level 2 PTE not valid, va = %#x\n", vaddr);
59 return 0;
60 }
61
62 Addr level3_pte = level2.paddr() + vaddr.level3();
63 AlphaISA::PageTableEntry level3 = mem->read<uint64_t>(level3_pte);
64 if (!level3.valid()) {
65 DPRINTF(VtoPhys, "level 3 PTE not valid, va = %#x\n", vaddr);
66 return 0;
67 }
68 return level3;
69}
70
71Addr
72AlphaISA::vtophys(Addr vaddr)
73{
74 Addr paddr = 0;
75 if (AlphaISA::IsUSeg(vaddr))
76 DPRINTF(VtoPhys, "vtophys: invalid vaddr %#x", vaddr);
77 else if (AlphaISA::IsK0Seg(vaddr))
78 paddr = AlphaISA::K0Seg2Phys(vaddr);
79 else
80 panic("vtophys: ptbr is not set on virtual lookup");
81
82 DPRINTF(VtoPhys, "vtophys(%#x) -> %#x\n", vaddr, paddr);
83
84 return paddr;
85}
86
87Addr
88AlphaISA::vtophys(ExecContext *xc, Addr addr)
89{
90 AlphaISA::VAddr vaddr = addr;
91 Addr ptbr = xc->readMiscReg(AlphaISA::IPR_PALtemp20);
92 Addr paddr = 0;
93 //@todo Andrew couldn't remember why he commented some of this code
94 //so I put it back in. Perhaps something to do with gdb debugging?
95 if (AlphaISA::PcPAL(vaddr) && (vaddr < EV5::PalMax)) {
96 paddr = vaddr & ~ULL(1);
97 } else {
98 if (AlphaISA::IsK0Seg(vaddr)) {
99 paddr = AlphaISA::K0Seg2Phys(vaddr);
100 } else if (!ptbr) {
101 paddr = vaddr;
102 } else {
103 AlphaISA::PageTableEntry pte =
104 kernel_pte_lookup(xc->getPhysPort(), ptbr, vaddr);
105 if (pte.valid())
106 paddr = pte.paddr() | vaddr.offset();
107 }
108 }
109
110
111 DPRINTF(VtoPhys, "vtophys(%#x) -> %#x\n", vaddr, paddr);
112
113 return paddr;
114}
115
116
117void
118AlphaISA::CopyOut(ExecContext *xc, void *dest, Addr src, size_t cplen)
119{
120 uint8_t *dst = (uint8_t *)dest;
121 VirtualPort *vp = xc->getVirtPort(xc);
122
123 vp->readBlob(src, dst, cplen);
124
125 xc->delVirtPort(vp);
126
127}
128
129void
130AlphaISA::CopyIn(ExecContext *xc, Addr dest, void *source, size_t cplen)
131{
132 uint8_t *src = (uint8_t *)source;
133 VirtualPort *vp = xc->getVirtPort(xc);
134
135 vp->writeBlob(dest, src, cplen);
136
137 xc->delVirtPort(vp);
138}
139
140void
141AlphaISA::CopyStringOut(ExecContext *xc, char *dst, Addr vaddr, size_t maxlen)
142{
143 int len = 0;
144 VirtualPort *vp = xc->getVirtPort(xc);
145
146 do {
147 vp->readBlob(vaddr++, (uint8_t*)dst++, 1);
148 len++;
149 } while (len < maxlen && dst[len] != 0 );
150
151 xc->delVirtPort(vp);
152 dst[len] = 0;
153}
154
155void
156AlphaISA::CopyStringIn(ExecContext *xc, char *src, Addr vaddr)
157{
158 VirtualPort *vp = xc->getVirtPort(xc);
159 for (ChunkGenerator gen(vaddr, strlen(src), AlphaISA::PageBytes); !gen.done();
160 gen.next())
161 {
162 vp->writeBlob(gen.addr(), (uint8_t*)src, gen.size());
163 src += gen.size();
164 }
165 xc->delVirtPort(vp);
166}
|