| 1 | /* |
| 2 | * Loongson specific proc functions for linux-user |
| 3 | * |
| 4 | * Copyright (c) 2026 Helge Deller |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 7 | */ |
| 8 | #ifndef LOONGARCH_TARGET_PROC_H |
| 9 | #define LOONGARCH_TARGET_PROC_H |
| 10 | |
| 11 | static int open_cpuinfo(CPUArchState *cpu_env, int fd) |
| 12 | { |
| 13 | uint32_t elf_hwcap = get_elf_hwcap(env_cpu(cpu_env)); |
| 14 | uint32_t prid, ser_id, pabits, vabits, i, n, num_cpus; |
| 15 | bool is_64bit = is_la64(cpu_env); |
| 16 | const char *hwcap_str; |
| 17 | struct timespec res; |
| 18 | double freq_mhz; |
| 19 | |
| 20 | #if TARGET_LONG_BITS == 32 |
| 21 | pabits = 31; |
| 22 | vabits = 31; |
| 23 | #else |
| 24 | pabits = FIELD_EX32(cpu_env->cpucfg[1], CPUCFG1, PALEN); |
| 25 | vabits = FIELD_EX32(cpu_env->cpucfg[1], CPUCFG1, VALEN); |
| 26 | #endif |
| 27 | |
| 28 | if (clock_getres(CLOCK_REALTIME, &res) == -1) { |
| 29 | res.tv_nsec = 1; |
| 30 | } |
| 31 | freq_mhz = 1000.0 / res.tv_nsec; |
| 32 | |
| 33 | ser_id = FIELD_EX32(cpu_env->cpucfg[0], CPUCFG0, SERID); |
| 34 | prid = FIELD_EX32(cpu_env->cpucfg[0], CPUCFG0, PRID); |
| 35 | |
| 36 | dprintf(fd, "system type\t\t: generic-loongson-machine\n"); |
| 37 | |
| 38 | num_cpus = sysconf(_SC_NPROCESSORS_ONLN); |
| 39 | for (n = 0; n < num_cpus; n++) { |
| 40 | dprintf(fd, "\nprocessor\t\t: %d\n", n); |
| 41 | dprintf(fd, "package\t\t\t: 0\n"); |
| 42 | dprintf(fd, "core\t\t\t: %d\n", n); |
| 43 | dprintf(fd, "global_id\t\t: %d\n", n); |
| 44 | dprintf(fd, "CPU Family\t\t: Loongson-%dbit\n", is_64bit ? 64 : 32); |
| 45 | dprintf(fd, "Model Name\t\t: QEMU_user-v" QEMU_VERSION "\n"); |
| 46 | dprintf(fd, "PRID\t\t\t: %s (%08x)\n", |
| 47 | ser_id == PRID_SERIES_LA464 ? "LA464" : |
| 48 | ser_id == PRID_SERIES_LA132 ? "LA132" : "Unknown", |
| 49 | cpu_env->cpucfg[0]); |
| 50 | dprintf(fd, "CPU Revision\t\t: 0x%02x\n", prid); |
| 51 | dprintf(fd, "FPU Revision\t\t: 0x%02x\n", |
| 52 | FIELD_EX32(cpu_env->cpucfg[2], CPUCFG2, FP_VER)); |
| 53 | dprintf(fd, "CPU MHz\t\t\t: %.2f\n", freq_mhz); |
| 54 | dprintf(fd, "Address Sizes\t\t: %d bits physical, %d bits virtual\n", |
| 55 | pabits + 1, vabits + 1); |
| 56 | |
| 57 | dprintf(fd, "ISA\t\t\t:%s", " loongarch32r loongarch32s"); |
| 58 | if (is_64bit) { |
| 59 | dprintf(fd, " loongarch64"); |
| 60 | } |
| 61 | |
| 62 | dprintf(fd, "\nFeatures\t\t:"); |
| 63 | for (i = 0; i < sizeof(elf_hwcap) * 8; i++) { |
| 64 | if (!(elf_hwcap & (1 << i))) { |
| 65 | continue; |
| 66 | } |
| 67 | hwcap_str = elf_hwcap_str(i); |
| 68 | if (hwcap_str) { |
| 69 | dprintf(fd, " %s", hwcap_str); |
| 70 | } |
| 71 | } |
| 72 | dprintf(fd, "\nHardware Watchpoint\t: no\n"); |
| 73 | } |
| 74 | return 0; |
| 75 | } |
| 76 | #define HAVE_ARCH_PROC_CPUINFO |
| 77 | |
| 78 | #endif /* LOONGARCH_TARGET_PROC_H */ |