1 | /* |
2 | * QEMU MIPS address translation support |
3 | * |
4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
5 | * of this software and associated documentation files (the "Software"), to deal |
6 | * in the Software without restriction, including without limitation the rights |
7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
8 | * copies of the Software, and to permit persons to whom the Software is |
9 | * furnished to do so, subject to the following conditions: |
10 | * |
11 | * The above copyright notice and this permission notice shall be included in |
12 | * all copies or substantial portions of the Software. |
13 | * |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
17 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
20 | * THE SOFTWARE. |
21 | */ |
22 | |
23 | #include "qemu/osdep.h" |
24 | #include "hw/mips/cpudevs.h" |
25 | |
26 | static int mips_um_ksegs; |
27 | |
28 | uint64_t cpu_mips_kseg0_to_phys(void *opaque, uint64_t addr) |
29 | { |
30 | return addr & 0x1fffffffll; |
31 | } |
32 | |
33 | uint64_t cpu_mips_phys_to_kseg0(void *opaque, uint64_t addr) |
34 | { |
35 | return addr | ~0x7fffffffll; |
36 | } |
37 | |
38 | uint64_t cpu_mips_kvm_um_phys_to_kseg0(void *opaque, uint64_t addr) |
39 | { |
40 | return addr | 0x40000000ll; |
41 | } |
42 | |
43 | bool mips_um_ksegs_enabled(void) |
44 | { |
45 | return mips_um_ksegs; |
46 | } |
47 | |
48 | void mips_um_ksegs_enable(void) |
49 | { |
50 | mips_um_ksegs = 1; |
51 | } |
52 | |