/* * HPPA interrupt helper routines * * Copyright (c) 2017 Richard Henderson * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, see <http://www.gnu.org/licenses/>. */ #include "qemu/osdep.h" #include "cpu.h" #include "migration/cpu.h" static int get_psw(QEMUFile *f, void *opaque, size_t size, const VMStateField *field) { CPUHPPAState *env = opaque; cpu_hppa_put_psw(env, qemu_get_be64(f)); return 0; } static int put_psw(QEMUFile *f, void *opaque, size_t size, const VMStateField *field, JSONWriter *vmdesc) { CPUHPPAState *env = opaque; qemu_put_be64(f, cpu_hppa_get_psw(env)); return 0; } static const VMStateInfo vmstate_psw = { .name = "psw", .get = get_psw, .put = put_psw, }; static int get_tlb(QEMUFile *f, void *opaque, size_t size, const VMStateField *field) { HPPATLBEntry *ent = opaque; uint64_t val; ent->itree.start = qemu_get_be64(f); ent->itree.last = qemu_get_be64(f); ent->pa = qemu_get_be64(f); val = qemu_get_be64(f); if (val) { ent->t = extract64(val, 61, 1); ent->d = extract64(val, 60, 1); ent->b = extract64(val, 59, 1); ent->ar_type = extract64(val, 56, 3); ent->ar_pl1 = extract64(val, 54, 2); ent->ar_pl2 = extract64(val, 52, 2); ent->u = extract64(val, 51, 1); /* o = bit 50 */ /* p = bit 49 */ ent->access_id = extract64(val, 1, 31); ent->entry_valid = 1; } return 0; } static int put_tlb(QEMUFile *f, void *opaque, size_t size, const VMStateField *field, JSONWriter *vmdesc) { HPPATLBEntry *ent = opaque; uint64_t val = 0; if (ent->entry_valid) { val = 1; val = deposit64(val, 61, 1, ent->t); val = deposit64(val, 60, 1, ent->d); val = deposit64(val, 59, 1, ent->b); val = deposit64(val, 56, 3, ent->ar_type); val = deposit64(val, 54, 2, ent->ar_pl1); val = deposit64(val, 52, 2, ent->ar_pl2); val = deposit64(val, 51, 1, ent->u); /* o = bit 50 */ /* p = bit 49 */ val = deposit64(val, 1, 31, ent->access_id); } qemu_put_be64(f, ent->itree.start); qemu_put_be64(f, ent->itree.last); qemu_put_be64(f, ent->pa); qemu_put_be64(f, val); return 0; } static const VMStateInfo vmstate_tlb_entry = { .name = "tlb entry", .get = get_tlb, .put = put_tlb, }; static int tlb_pre_load(void *opaque) { CPUHPPAState *env = opaque; /* * Zap the entire tlb, on-the-side data structures and all. * Each tlb entry will have data re-filled by put_tlb. */ memset(env->tlb, 0, sizeof(env->tlb)); memset(&env->tlb_root, 0, sizeof(env->tlb_root)); env->tlb_unused = NULL; env->tlb_partial = NULL; return 0; } static int tlb_post_load(void *opaque, int version_id) { CPUHPPAState *env = opaque; uint32_t btlb_entries = HPPA_BTLB_ENTRIES(env); HPPATLBEntry **unused = &env->tlb_unused; HPPATLBEntry *partial = NULL; /* * Re-create the interval tree from the valid entries. * Truly invalid entries should have start == end == 0. * Otherwise it should be the in-flight tlb_partial entry. */ for (uint32_t i = 0; i < ARRAY_SIZE(env->tlb); ++i) { HPPATLBEntry *e = &env->tlb[i]; if (e->entry_valid) { interval_tree_insert(&e->itree, &env->tlb_root); } else if (i < btlb_entries) { /* btlb not in unused list */ } else if (partial == NULL && e->itree.start < e->itree.last) { partial = e; } else { *unused = e; unused = &e->unused_next; } } env->tlb_partial = partial; *unused = NULL; return 0; } static const VMStateField vmstate_tlb_fields[] = { VMSTATE_ARRAY(tlb, CPUHPPAState, ARRAY_SIZE(((CPUHPPAState *)0)->tlb), 0, vmstate_tlb_entry, HPPATLBEntry), VMSTATE_UINT32(tlb_last, CPUHPPAState), VMSTATE_END_OF_LIST() }; static const VMStateDescription vmstate_tlb = { .name = "env/tlb", .version_id = 1, .minimum_version_id = 1, .fields = vmstate_tlb_fields, .pre_load = tlb_pre_load, .post_load = tlb_post_load, }; static const VMStateField vmstate_env_fields[] = { VMSTATE_UINT64_ARRAY(gr, CPUHPPAState, 32), VMSTATE_UINT64_ARRAY(fr, CPUHPPAState, 32), VMSTATE_UINT64_ARRAY(sr, CPUHPPAState, 8), VMSTATE_UINT64_ARRAY(cr, CPUHPPAState, 32), VMSTATE_UINT64_ARRAY(cr_back, CPUHPPAState, 2), VMSTATE_UINT64_ARRAY(shadow, CPUHPPAState, 7), /* Save the architecture value of the psw, not the internally expanded version. Since this architecture value does not exist in memory to be stored, this requires a but of hoop jumping. We want OFFSET=0 so that we effectively pass ENV to the helper functions, and we need to fill in the name by hand since there's no field of that name. */ { .name = "psw", .version_id = 0, .size = sizeof(uint64_t), .info = &vmstate_psw, .flags = VMS_SINGLE, .offset = 0 }, VMSTATE_UINT64(iaoq_f, CPUHPPAState), VMSTATE_UINT64(iaoq_b, CPUHPPAState), VMSTATE_UINT64(iasq_f, CPUHPPAState), VMSTATE_UINT64(iasq_b, CPUHPPAState), VMSTATE_UINT32(fr0_shadow, CPUHPPAState), VMSTATE_END_OF_LIST() }; static const VMStateDescription * const vmstate_env_subsections[] = { &vmstate_tlb, NULL }; static const VMStateDescription vmstate_env = { .name = "env", .version_id = 3, .minimum_version_id = 3, .fields = vmstate_env_fields, .subsections = vmstate_env_subsections, }; static const VMStateField vmstate_cpu_fields[] = { VMSTATE_CPU(), VMSTATE_STRUCT(env, HPPACPU, 1, vmstate_env, CPUHPPAState), VMSTATE_END_OF_LIST() }; const VMStateDescription vmstate_hppa_cpu = { .name = "cpu", .version_id = 1, .minimum_version_id = 1, .fields = vmstate_cpu_fields, };