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 "cpu.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 uint64_t cpu_mips_kseg1_to_phys(void *opaque, uint64_t addr) 44 { 45 return addr & 0x1fffffffll; 46 } 47 48 uint64_t cpu_mips_phys_to_kseg1(void *opaque, uint64_t addr) 49 { 50 return (addr & 0x1fffffffll) | 0xffffffffa0000000ll; 51 } 52 53 bool mips_um_ksegs_enabled(void) 54 { 55 return mips_um_ksegs; 56 } 57 58 void mips_um_ksegs_enable(void) 59 { 60 mips_um_ksegs = 1; 61 } 62