7e450a8f50
This code is preventing the MMU debug code from displaying virtual mappings of IO devices (anything that is not located in the RAM). Before this patch, Qemu would output 0xffffffffffffffff (-1) as the physical address corresponding to an IO device virtual address. With this patch the intended physical address is displayed. Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
869 lines
27 KiB
C
869 lines
27 KiB
C
/*
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* Sparc MMU helpers
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "exec/exec-all.h"
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#include "trace.h"
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#include "exec/address-spaces.h"
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/* Sparc MMU emulation */
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#if defined(CONFIG_USER_ONLY)
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int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
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int mmu_idx)
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{
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SPARCCPU *cpu = SPARC_CPU(cs);
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CPUSPARCState *env = &cpu->env;
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if (rw & 2) {
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cs->exception_index = TT_TFAULT;
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} else {
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cs->exception_index = TT_DFAULT;
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#ifdef TARGET_SPARC64
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env->dmmu.mmuregs[4] = address;
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#else
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env->mmuregs[4] = address;
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#endif
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}
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return 1;
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}
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#else
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#ifndef TARGET_SPARC64
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/*
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* Sparc V8 Reference MMU (SRMMU)
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*/
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static const int access_table[8][8] = {
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{ 0, 0, 0, 0, 8, 0, 12, 12 },
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{ 0, 0, 0, 0, 8, 0, 0, 0 },
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{ 8, 8, 0, 0, 0, 8, 12, 12 },
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{ 8, 8, 0, 0, 0, 8, 0, 0 },
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{ 8, 0, 8, 0, 8, 8, 12, 12 },
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{ 8, 0, 8, 0, 8, 0, 8, 0 },
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{ 8, 8, 8, 0, 8, 8, 12, 12 },
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{ 8, 8, 8, 0, 8, 8, 8, 0 }
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};
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static const int perm_table[2][8] = {
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{
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PAGE_READ,
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PAGE_READ | PAGE_WRITE,
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PAGE_READ | PAGE_EXEC,
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PAGE_READ | PAGE_WRITE | PAGE_EXEC,
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PAGE_EXEC,
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PAGE_READ | PAGE_WRITE,
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PAGE_READ | PAGE_EXEC,
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PAGE_READ | PAGE_WRITE | PAGE_EXEC
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},
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{
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PAGE_READ,
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PAGE_READ | PAGE_WRITE,
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PAGE_READ | PAGE_EXEC,
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PAGE_READ | PAGE_WRITE | PAGE_EXEC,
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PAGE_EXEC,
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PAGE_READ,
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0,
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0,
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}
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};
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static int get_physical_address(CPUSPARCState *env, hwaddr *physical,
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int *prot, int *access_index,
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target_ulong address, int rw, int mmu_idx,
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target_ulong *page_size)
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{
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int access_perms = 0;
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hwaddr pde_ptr;
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uint32_t pde;
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int error_code = 0, is_dirty, is_user;
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unsigned long page_offset;
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CPUState *cs = CPU(sparc_env_get_cpu(env));
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is_user = mmu_idx == MMU_USER_IDX;
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if (mmu_idx == MMU_PHYS_IDX) {
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*page_size = TARGET_PAGE_SIZE;
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/* Boot mode: instruction fetches are taken from PROM */
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if (rw == 2 && (env->mmuregs[0] & env->def.mmu_bm)) {
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*physical = env->prom_addr | (address & 0x7ffffULL);
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*prot = PAGE_READ | PAGE_EXEC;
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return 0;
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}
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*physical = address;
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*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
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return 0;
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}
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*access_index = ((rw & 1) << 2) | (rw & 2) | (is_user ? 0 : 1);
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*physical = 0xffffffffffff0000ULL;
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/* SPARC reference MMU table walk: Context table->L1->L2->PTE */
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/* Context base + context number */
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pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 2);
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pde = ldl_phys(cs->as, pde_ptr);
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/* Ctx pde */
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switch (pde & PTE_ENTRYTYPE_MASK) {
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default:
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case 0: /* Invalid */
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return 1 << 2;
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case 2: /* L0 PTE, maybe should not happen? */
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case 3: /* Reserved */
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return 4 << 2;
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case 1: /* L0 PDE */
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pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4);
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pde = ldl_phys(cs->as, pde_ptr);
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switch (pde & PTE_ENTRYTYPE_MASK) {
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default:
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case 0: /* Invalid */
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return (1 << 8) | (1 << 2);
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case 3: /* Reserved */
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return (1 << 8) | (4 << 2);
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case 1: /* L1 PDE */
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pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4);
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pde = ldl_phys(cs->as, pde_ptr);
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switch (pde & PTE_ENTRYTYPE_MASK) {
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default:
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case 0: /* Invalid */
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return (2 << 8) | (1 << 2);
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case 3: /* Reserved */
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return (2 << 8) | (4 << 2);
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case 1: /* L2 PDE */
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pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4);
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pde = ldl_phys(cs->as, pde_ptr);
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switch (pde & PTE_ENTRYTYPE_MASK) {
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default:
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case 0: /* Invalid */
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return (3 << 8) | (1 << 2);
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case 1: /* PDE, should not happen */
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case 3: /* Reserved */
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return (3 << 8) | (4 << 2);
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case 2: /* L3 PTE */
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page_offset = 0;
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}
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*page_size = TARGET_PAGE_SIZE;
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break;
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case 2: /* L2 PTE */
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page_offset = address & 0x3f000;
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*page_size = 0x40000;
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}
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break;
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case 2: /* L1 PTE */
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page_offset = address & 0xfff000;
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*page_size = 0x1000000;
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}
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}
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/* check access */
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access_perms = (pde & PTE_ACCESS_MASK) >> PTE_ACCESS_SHIFT;
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error_code = access_table[*access_index][access_perms];
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if (error_code && !((env->mmuregs[0] & MMU_NF) && is_user)) {
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return error_code;
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}
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/* update page modified and dirty bits */
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is_dirty = (rw & 1) && !(pde & PG_MODIFIED_MASK);
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if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
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pde |= PG_ACCESSED_MASK;
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if (is_dirty) {
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pde |= PG_MODIFIED_MASK;
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}
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stl_phys_notdirty(cs->as, pde_ptr, pde);
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}
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/* the page can be put in the TLB */
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*prot = perm_table[is_user][access_perms];
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if (!(pde & PG_MODIFIED_MASK)) {
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/* only set write access if already dirty... otherwise wait
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for dirty access */
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*prot &= ~PAGE_WRITE;
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}
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/* Even if large ptes, we map only one 4KB page in the cache to
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avoid filling it too fast */
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*physical = ((hwaddr)(pde & PTE_ADDR_MASK) << 4) + page_offset;
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return error_code;
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}
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/* Perform address translation */
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int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
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int mmu_idx)
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{
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SPARCCPU *cpu = SPARC_CPU(cs);
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CPUSPARCState *env = &cpu->env;
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hwaddr paddr;
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target_ulong vaddr;
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target_ulong page_size;
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int error_code = 0, prot, access_index;
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address &= TARGET_PAGE_MASK;
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error_code = get_physical_address(env, &paddr, &prot, &access_index,
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address, rw, mmu_idx, &page_size);
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vaddr = address;
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if (error_code == 0) {
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qemu_log_mask(CPU_LOG_MMU,
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"Translate at %" VADDR_PRIx " -> " TARGET_FMT_plx ", vaddr "
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TARGET_FMT_lx "\n", address, paddr, vaddr);
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tlb_set_page(cs, vaddr, paddr, prot, mmu_idx, page_size);
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return 0;
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}
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if (env->mmuregs[3]) { /* Fault status register */
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env->mmuregs[3] = 1; /* overflow (not read before another fault) */
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}
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env->mmuregs[3] |= (access_index << 5) | error_code | 2;
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env->mmuregs[4] = address; /* Fault address register */
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if ((env->mmuregs[0] & MMU_NF) || env->psret == 0) {
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/* No fault mode: if a mapping is available, just override
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permissions. If no mapping is available, redirect accesses to
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neverland. Fake/overridden mappings will be flushed when
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switching to normal mode. */
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prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
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tlb_set_page(cs, vaddr, paddr, prot, mmu_idx, TARGET_PAGE_SIZE);
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return 0;
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} else {
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if (rw & 2) {
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cs->exception_index = TT_TFAULT;
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} else {
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cs->exception_index = TT_DFAULT;
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}
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return 1;
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}
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}
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target_ulong mmu_probe(CPUSPARCState *env, target_ulong address, int mmulev)
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{
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CPUState *cs = CPU(sparc_env_get_cpu(env));
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hwaddr pde_ptr;
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uint32_t pde;
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/* Context base + context number */
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pde_ptr = (hwaddr)(env->mmuregs[1] << 4) +
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(env->mmuregs[2] << 2);
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pde = ldl_phys(cs->as, pde_ptr);
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switch (pde & PTE_ENTRYTYPE_MASK) {
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default:
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case 0: /* Invalid */
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case 2: /* PTE, maybe should not happen? */
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case 3: /* Reserved */
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return 0;
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case 1: /* L1 PDE */
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if (mmulev == 3) {
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return pde;
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}
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pde_ptr = ((address >> 22) & ~3) + ((pde & ~3) << 4);
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pde = ldl_phys(cs->as, pde_ptr);
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switch (pde & PTE_ENTRYTYPE_MASK) {
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default:
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case 0: /* Invalid */
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case 3: /* Reserved */
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return 0;
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case 2: /* L1 PTE */
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return pde;
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case 1: /* L2 PDE */
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if (mmulev == 2) {
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return pde;
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}
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pde_ptr = ((address & 0xfc0000) >> 16) + ((pde & ~3) << 4);
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pde = ldl_phys(cs->as, pde_ptr);
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switch (pde & PTE_ENTRYTYPE_MASK) {
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default:
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case 0: /* Invalid */
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case 3: /* Reserved */
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return 0;
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case 2: /* L2 PTE */
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return pde;
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case 1: /* L3 PDE */
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if (mmulev == 1) {
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return pde;
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}
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pde_ptr = ((address & 0x3f000) >> 10) + ((pde & ~3) << 4);
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pde = ldl_phys(cs->as, pde_ptr);
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switch (pde & PTE_ENTRYTYPE_MASK) {
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default:
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case 0: /* Invalid */
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case 1: /* PDE, should not happen */
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case 3: /* Reserved */
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return 0;
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case 2: /* L3 PTE */
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return pde;
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}
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}
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}
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}
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return 0;
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}
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void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUSPARCState *env)
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{
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CPUState *cs = CPU(sparc_env_get_cpu(env));
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target_ulong va, va1, va2;
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unsigned int n, m, o;
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hwaddr pde_ptr, pa;
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uint32_t pde;
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pde_ptr = (env->mmuregs[1] << 4) + (env->mmuregs[2] << 2);
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pde = ldl_phys(cs->as, pde_ptr);
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(*cpu_fprintf)(f, "Root ptr: " TARGET_FMT_plx ", ctx: %d\n",
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(hwaddr)env->mmuregs[1] << 4, env->mmuregs[2]);
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for (n = 0, va = 0; n < 256; n++, va += 16 * 1024 * 1024) {
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pde = mmu_probe(env, va, 2);
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if (pde) {
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pa = cpu_get_phys_page_debug(cs, va);
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(*cpu_fprintf)(f, "VA: " TARGET_FMT_lx ", PA: " TARGET_FMT_plx
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" PDE: " TARGET_FMT_lx "\n", va, pa, pde);
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for (m = 0, va1 = va; m < 64; m++, va1 += 256 * 1024) {
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pde = mmu_probe(env, va1, 1);
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if (pde) {
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pa = cpu_get_phys_page_debug(cs, va1);
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(*cpu_fprintf)(f, " VA: " TARGET_FMT_lx ", PA: "
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TARGET_FMT_plx " PDE: " TARGET_FMT_lx "\n",
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va1, pa, pde);
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for (o = 0, va2 = va1; o < 64; o++, va2 += 4 * 1024) {
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pde = mmu_probe(env, va2, 0);
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if (pde) {
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pa = cpu_get_phys_page_debug(cs, va2);
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(*cpu_fprintf)(f, " VA: " TARGET_FMT_lx ", PA: "
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TARGET_FMT_plx " PTE: "
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TARGET_FMT_lx "\n",
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va2, pa, pde);
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}
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}
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}
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}
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}
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}
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}
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/* Gdb expects all registers windows to be flushed in ram. This function handles
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* reads (and only reads) in stack frames as if windows were flushed. We assume
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* that the sparc ABI is followed.
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*/
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int sparc_cpu_memory_rw_debug(CPUState *cs, vaddr address,
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uint8_t *buf, int len, bool is_write)
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{
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SPARCCPU *cpu = SPARC_CPU(cs);
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CPUSPARCState *env = &cpu->env;
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target_ulong addr = address;
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int i;
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int len1;
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int cwp = env->cwp;
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if (!is_write) {
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for (i = 0; i < env->nwindows; i++) {
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int off;
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target_ulong fp = env->regbase[cwp * 16 + 22];
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/* Assume fp == 0 means end of frame. */
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if (fp == 0) {
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break;
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}
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cwp = cpu_cwp_inc(env, cwp + 1);
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/* Invalid window ? */
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if (env->wim & (1 << cwp)) {
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break;
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}
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/* According to the ABI, the stack is growing downward. */
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if (addr + len < fp) {
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break;
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}
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/* Not in this frame. */
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if (addr > fp + 64) {
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continue;
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}
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/* Handle access before this window. */
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if (addr < fp) {
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len1 = fp - addr;
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if (cpu_memory_rw_debug(cs, addr, buf, len1, is_write) != 0) {
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return -1;
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}
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addr += len1;
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len -= len1;
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buf += len1;
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}
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/* Access byte per byte to registers. Not very efficient but speed
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* is not critical.
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*/
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off = addr - fp;
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len1 = 64 - off;
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if (len1 > len) {
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len1 = len;
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}
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for (; len1; len1--) {
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int reg = cwp * 16 + 8 + (off >> 2);
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union {
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uint32_t v;
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uint8_t c[4];
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} u;
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u.v = cpu_to_be32(env->regbase[reg]);
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*buf++ = u.c[off & 3];
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addr++;
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len--;
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off++;
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}
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if (len == 0) {
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return 0;
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}
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}
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}
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return cpu_memory_rw_debug(cs, addr, buf, len, is_write);
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}
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|
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#else /* !TARGET_SPARC64 */
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/* 41 bit physical address space */
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static inline hwaddr ultrasparc_truncate_physical(uint64_t x)
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{
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return x & 0x1ffffffffffULL;
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}
|
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|
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/*
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* UltraSparc IIi I/DMMUs
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*/
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|
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/* Returns true if TTE tag is valid and matches virtual address value
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in context requires virtual address mask value calculated from TTE
|
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entry size */
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static inline int ultrasparc_tag_match(SparcTLBEntry *tlb,
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uint64_t address, uint64_t context,
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hwaddr *physical)
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{
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uint64_t mask = -(8192ULL << 3 * TTE_PGSIZE(tlb->tte));
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|
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/* valid, context match, virtual address match? */
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if (TTE_IS_VALID(tlb->tte) &&
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(TTE_IS_GLOBAL(tlb->tte) || tlb_compare_context(tlb, context))
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&& compare_masked(address, tlb->tag, mask)) {
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/* decode physical address */
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*physical = ((tlb->tte & mask) | (address & ~mask)) & 0x1ffffffe000ULL;
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return 1;
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}
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return 0;
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}
|
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|
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static int get_physical_address_data(CPUSPARCState *env,
|
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hwaddr *physical, int *prot,
|
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target_ulong address, int rw, int mmu_idx)
|
|
{
|
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CPUState *cs = CPU(sparc_env_get_cpu(env));
|
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unsigned int i;
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uint64_t context;
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uint64_t sfsr = 0;
|
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bool is_user = false;
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|
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switch (mmu_idx) {
|
|
case MMU_PHYS_IDX:
|
|
g_assert_not_reached();
|
|
case MMU_USER_IDX:
|
|
is_user = true;
|
|
/* fallthru */
|
|
case MMU_KERNEL_IDX:
|
|
context = env->dmmu.mmu_primary_context & 0x1fff;
|
|
sfsr |= SFSR_CT_PRIMARY;
|
|
break;
|
|
case MMU_USER_SECONDARY_IDX:
|
|
is_user = true;
|
|
/* fallthru */
|
|
case MMU_KERNEL_SECONDARY_IDX:
|
|
context = env->dmmu.mmu_secondary_context & 0x1fff;
|
|
sfsr |= SFSR_CT_SECONDARY;
|
|
break;
|
|
case MMU_NUCLEUS_IDX:
|
|
sfsr |= SFSR_CT_NUCLEUS;
|
|
/* FALLTHRU */
|
|
default:
|
|
context = 0;
|
|
break;
|
|
}
|
|
|
|
if (rw == 1) {
|
|
sfsr |= SFSR_WRITE_BIT;
|
|
} else if (rw == 4) {
|
|
sfsr |= SFSR_NF_BIT;
|
|
}
|
|
|
|
for (i = 0; i < 64; i++) {
|
|
/* ctx match, vaddr match, valid? */
|
|
if (ultrasparc_tag_match(&env->dtlb[i], address, context, physical)) {
|
|
int do_fault = 0;
|
|
|
|
/* access ok? */
|
|
/* multiple bits in SFSR.FT may be set on TT_DFAULT */
|
|
if (TTE_IS_PRIV(env->dtlb[i].tte) && is_user) {
|
|
do_fault = 1;
|
|
sfsr |= SFSR_FT_PRIV_BIT; /* privilege violation */
|
|
trace_mmu_helper_dfault(address, context, mmu_idx, env->tl);
|
|
}
|
|
if (rw == 4) {
|
|
if (TTE_IS_SIDEEFFECT(env->dtlb[i].tte)) {
|
|
do_fault = 1;
|
|
sfsr |= SFSR_FT_NF_E_BIT;
|
|
}
|
|
} else {
|
|
if (TTE_IS_NFO(env->dtlb[i].tte)) {
|
|
do_fault = 1;
|
|
sfsr |= SFSR_FT_NFO_BIT;
|
|
}
|
|
}
|
|
|
|
if (do_fault) {
|
|
/* faults above are reported with TT_DFAULT. */
|
|
cs->exception_index = TT_DFAULT;
|
|
} else if (!TTE_IS_W_OK(env->dtlb[i].tte) && (rw == 1)) {
|
|
do_fault = 1;
|
|
cs->exception_index = TT_DPROT;
|
|
|
|
trace_mmu_helper_dprot(address, context, mmu_idx, env->tl);
|
|
}
|
|
|
|
if (!do_fault) {
|
|
*prot = PAGE_READ;
|
|
if (TTE_IS_W_OK(env->dtlb[i].tte)) {
|
|
*prot |= PAGE_WRITE;
|
|
}
|
|
|
|
TTE_SET_USED(env->dtlb[i].tte);
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (env->dmmu.sfsr & SFSR_VALID_BIT) { /* Fault status register */
|
|
sfsr |= SFSR_OW_BIT; /* overflow (not read before
|
|
another fault) */
|
|
}
|
|
|
|
if (env->pstate & PS_PRIV) {
|
|
sfsr |= SFSR_PR_BIT;
|
|
}
|
|
|
|
/* FIXME: ASI field in SFSR must be set */
|
|
env->dmmu.sfsr = sfsr | SFSR_VALID_BIT;
|
|
|
|
env->dmmu.sfar = address; /* Fault address register */
|
|
|
|
env->dmmu.tag_access = (address & ~0x1fffULL) | context;
|
|
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
trace_mmu_helper_dmiss(address, context);
|
|
|
|
/*
|
|
* On MMU misses:
|
|
* - UltraSPARC IIi: SFSR and SFAR unmodified
|
|
* - JPS1: SFAR updated and some fields of SFSR updated
|
|
*/
|
|
env->dmmu.tag_access = (address & ~0x1fffULL) | context;
|
|
cs->exception_index = TT_DMISS;
|
|
return 1;
|
|
}
|
|
|
|
static int get_physical_address_code(CPUSPARCState *env,
|
|
hwaddr *physical, int *prot,
|
|
target_ulong address, int mmu_idx)
|
|
{
|
|
CPUState *cs = CPU(sparc_env_get_cpu(env));
|
|
unsigned int i;
|
|
uint64_t context;
|
|
bool is_user = false;
|
|
|
|
switch (mmu_idx) {
|
|
case MMU_PHYS_IDX:
|
|
case MMU_USER_SECONDARY_IDX:
|
|
case MMU_KERNEL_SECONDARY_IDX:
|
|
g_assert_not_reached();
|
|
case MMU_USER_IDX:
|
|
is_user = true;
|
|
/* fallthru */
|
|
case MMU_KERNEL_IDX:
|
|
context = env->dmmu.mmu_primary_context & 0x1fff;
|
|
break;
|
|
default:
|
|
context = 0;
|
|
break;
|
|
}
|
|
|
|
if (env->tl == 0) {
|
|
/* PRIMARY context */
|
|
context = env->dmmu.mmu_primary_context & 0x1fff;
|
|
} else {
|
|
/* NUCLEUS context */
|
|
context = 0;
|
|
}
|
|
|
|
for (i = 0; i < 64; i++) {
|
|
/* ctx match, vaddr match, valid? */
|
|
if (ultrasparc_tag_match(&env->itlb[i],
|
|
address, context, physical)) {
|
|
/* access ok? */
|
|
if (TTE_IS_PRIV(env->itlb[i].tte) && is_user) {
|
|
/* Fault status register */
|
|
if (env->immu.sfsr & SFSR_VALID_BIT) {
|
|
env->immu.sfsr = SFSR_OW_BIT; /* overflow (not read before
|
|
another fault) */
|
|
} else {
|
|
env->immu.sfsr = 0;
|
|
}
|
|
if (env->pstate & PS_PRIV) {
|
|
env->immu.sfsr |= SFSR_PR_BIT;
|
|
}
|
|
if (env->tl > 0) {
|
|
env->immu.sfsr |= SFSR_CT_NUCLEUS;
|
|
}
|
|
|
|
/* FIXME: ASI field in SFSR must be set */
|
|
env->immu.sfsr |= SFSR_FT_PRIV_BIT | SFSR_VALID_BIT;
|
|
cs->exception_index = TT_TFAULT;
|
|
|
|
env->immu.tag_access = (address & ~0x1fffULL) | context;
|
|
|
|
trace_mmu_helper_tfault(address, context);
|
|
|
|
return 1;
|
|
}
|
|
*prot = PAGE_EXEC;
|
|
TTE_SET_USED(env->itlb[i].tte);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
trace_mmu_helper_tmiss(address, context);
|
|
|
|
/* Context is stored in DMMU (dmmuregs[1]) also for IMMU */
|
|
env->immu.tag_access = (address & ~0x1fffULL) | context;
|
|
cs->exception_index = TT_TMISS;
|
|
return 1;
|
|
}
|
|
|
|
static int get_physical_address(CPUSPARCState *env, hwaddr *physical,
|
|
int *prot, int *access_index,
|
|
target_ulong address, int rw, int mmu_idx,
|
|
target_ulong *page_size)
|
|
{
|
|
/* ??? We treat everything as a small page, then explicitly flush
|
|
everything when an entry is evicted. */
|
|
*page_size = TARGET_PAGE_SIZE;
|
|
|
|
/* safety net to catch wrong softmmu index use from dynamic code */
|
|
if (env->tl > 0 && mmu_idx != MMU_NUCLEUS_IDX) {
|
|
if (rw == 2) {
|
|
trace_mmu_helper_get_phys_addr_code(env->tl, mmu_idx,
|
|
env->dmmu.mmu_primary_context,
|
|
env->dmmu.mmu_secondary_context,
|
|
address);
|
|
} else {
|
|
trace_mmu_helper_get_phys_addr_data(env->tl, mmu_idx,
|
|
env->dmmu.mmu_primary_context,
|
|
env->dmmu.mmu_secondary_context,
|
|
address);
|
|
}
|
|
}
|
|
|
|
if (mmu_idx == MMU_PHYS_IDX) {
|
|
*physical = ultrasparc_truncate_physical(address);
|
|
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
|
|
return 0;
|
|
}
|
|
|
|
if (rw == 2) {
|
|
return get_physical_address_code(env, physical, prot, address,
|
|
mmu_idx);
|
|
} else {
|
|
return get_physical_address_data(env, physical, prot, address, rw,
|
|
mmu_idx);
|
|
}
|
|
}
|
|
|
|
/* Perform address translation */
|
|
int sparc_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw,
|
|
int mmu_idx)
|
|
{
|
|
SPARCCPU *cpu = SPARC_CPU(cs);
|
|
CPUSPARCState *env = &cpu->env;
|
|
target_ulong vaddr;
|
|
hwaddr paddr;
|
|
target_ulong page_size;
|
|
int error_code = 0, prot, access_index;
|
|
|
|
address &= TARGET_PAGE_MASK;
|
|
error_code = get_physical_address(env, &paddr, &prot, &access_index,
|
|
address, rw, mmu_idx, &page_size);
|
|
if (error_code == 0) {
|
|
vaddr = address;
|
|
|
|
trace_mmu_helper_mmu_fault(address, paddr, mmu_idx, env->tl,
|
|
env->dmmu.mmu_primary_context,
|
|
env->dmmu.mmu_secondary_context);
|
|
|
|
tlb_set_page(cs, vaddr, paddr, prot, mmu_idx, page_size);
|
|
return 0;
|
|
}
|
|
/* XXX */
|
|
return 1;
|
|
}
|
|
|
|
void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUSPARCState *env)
|
|
{
|
|
unsigned int i;
|
|
const char *mask;
|
|
|
|
(*cpu_fprintf)(f, "MMU contexts: Primary: %" PRId64 ", Secondary: %"
|
|
PRId64 "\n",
|
|
env->dmmu.mmu_primary_context,
|
|
env->dmmu.mmu_secondary_context);
|
|
(*cpu_fprintf)(f, "DMMU Tag Access: %" PRIx64 ", TSB Tag Target: %" PRIx64
|
|
"\n", env->dmmu.tag_access, env->dmmu.tsb_tag_target);
|
|
if ((env->lsu & DMMU_E) == 0) {
|
|
(*cpu_fprintf)(f, "DMMU disabled\n");
|
|
} else {
|
|
(*cpu_fprintf)(f, "DMMU dump\n");
|
|
for (i = 0; i < 64; i++) {
|
|
switch (TTE_PGSIZE(env->dtlb[i].tte)) {
|
|
default:
|
|
case 0x0:
|
|
mask = " 8k";
|
|
break;
|
|
case 0x1:
|
|
mask = " 64k";
|
|
break;
|
|
case 0x2:
|
|
mask = "512k";
|
|
break;
|
|
case 0x3:
|
|
mask = " 4M";
|
|
break;
|
|
}
|
|
if (TTE_IS_VALID(env->dtlb[i].tte)) {
|
|
(*cpu_fprintf)(f, "[%02u] VA: %" PRIx64 ", PA: %llx"
|
|
", %s, %s, %s, %s, ctx %" PRId64 " %s\n",
|
|
i,
|
|
env->dtlb[i].tag & (uint64_t)~0x1fffULL,
|
|
TTE_PA(env->dtlb[i].tte),
|
|
mask,
|
|
TTE_IS_PRIV(env->dtlb[i].tte) ? "priv" : "user",
|
|
TTE_IS_W_OK(env->dtlb[i].tte) ? "RW" : "RO",
|
|
TTE_IS_LOCKED(env->dtlb[i].tte) ?
|
|
"locked" : "unlocked",
|
|
env->dtlb[i].tag & (uint64_t)0x1fffULL,
|
|
TTE_IS_GLOBAL(env->dtlb[i].tte) ?
|
|
"global" : "local");
|
|
}
|
|
}
|
|
}
|
|
if ((env->lsu & IMMU_E) == 0) {
|
|
(*cpu_fprintf)(f, "IMMU disabled\n");
|
|
} else {
|
|
(*cpu_fprintf)(f, "IMMU dump\n");
|
|
for (i = 0; i < 64; i++) {
|
|
switch (TTE_PGSIZE(env->itlb[i].tte)) {
|
|
default:
|
|
case 0x0:
|
|
mask = " 8k";
|
|
break;
|
|
case 0x1:
|
|
mask = " 64k";
|
|
break;
|
|
case 0x2:
|
|
mask = "512k";
|
|
break;
|
|
case 0x3:
|
|
mask = " 4M";
|
|
break;
|
|
}
|
|
if (TTE_IS_VALID(env->itlb[i].tte)) {
|
|
(*cpu_fprintf)(f, "[%02u] VA: %" PRIx64 ", PA: %llx"
|
|
", %s, %s, %s, ctx %" PRId64 " %s\n",
|
|
i,
|
|
env->itlb[i].tag & (uint64_t)~0x1fffULL,
|
|
TTE_PA(env->itlb[i].tte),
|
|
mask,
|
|
TTE_IS_PRIV(env->itlb[i].tte) ? "priv" : "user",
|
|
TTE_IS_LOCKED(env->itlb[i].tte) ?
|
|
"locked" : "unlocked",
|
|
env->itlb[i].tag & (uint64_t)0x1fffULL,
|
|
TTE_IS_GLOBAL(env->itlb[i].tte) ?
|
|
"global" : "local");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif /* TARGET_SPARC64 */
|
|
|
|
static int cpu_sparc_get_phys_page(CPUSPARCState *env, hwaddr *phys,
|
|
target_ulong addr, int rw, int mmu_idx)
|
|
{
|
|
target_ulong page_size;
|
|
int prot, access_index;
|
|
|
|
return get_physical_address(env, phys, &prot, &access_index, addr, rw,
|
|
mmu_idx, &page_size);
|
|
}
|
|
|
|
#if defined(TARGET_SPARC64)
|
|
hwaddr cpu_get_phys_page_nofault(CPUSPARCState *env, target_ulong addr,
|
|
int mmu_idx)
|
|
{
|
|
hwaddr phys_addr;
|
|
|
|
if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 4, mmu_idx) != 0) {
|
|
return -1;
|
|
}
|
|
return phys_addr;
|
|
}
|
|
#endif
|
|
|
|
hwaddr sparc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
|
|
{
|
|
SPARCCPU *cpu = SPARC_CPU(cs);
|
|
CPUSPARCState *env = &cpu->env;
|
|
hwaddr phys_addr;
|
|
int mmu_idx = cpu_mmu_index(env, false);
|
|
|
|
if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 2, mmu_idx) != 0) {
|
|
if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 0, mmu_idx) != 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
return phys_addr;
|
|
}
|
|
#endif
|