/*
 *  PowerPC ISAV3 BookS emulation generic mmu definitions for qemu.
 *
 *  Copyright (c) 2017 Suraj Jitindar Singh, IBM Corporation
 *
 * 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 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/>.
 */

#ifndef MMU_BOOOK3S_V3_H
#define MMU_BOOOK3S_V3_H

#ifndef CONFIG_USER_ONLY

/*
 * Partition table definitions
 */
#define PTCR_PATB               0x0FFFFFFFFFFFF000ULL /* Partition Table Base */
#define PTCR_PATS               0x000000000000001FULL /* Partition Table Size */

/* Partition Table Entry Fields */
#define PATE0_HR 0x8000000000000000

/*
 * WARNING: This field doesn't actually exist in the final version of
 * the architecture and is unused by hardware. However, qemu uses it
 * as an indication of a radix guest in the pseudo-PATB entry that it
 * maintains for SPAPR guests and in the migration stream, so we need
 * to keep it around
 */
#define PATE1_GR 0x8000000000000000

/* Process Table Entry */
struct prtb_entry {
    uint64_t prtbe0, prtbe1;
};

#ifdef TARGET_PPC64

static inline bool ppc64_use_proc_tbl(PowerPCCPU *cpu)
{
    return !!(cpu->env.spr[SPR_LPCR] & LPCR_UPRT);
}

/*
 * The LPCR:HR bit is a shortcut that avoids having to
 * dig out the partition table in the fast path. This is
 * also how the HW uses it.
 */
static inline bool ppc64_v3_radix(PowerPCCPU *cpu)
{
    return !!(cpu->env.spr[SPR_LPCR] & LPCR_HR);
}

hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr);

int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
                              int mmu_idx);

#endif /* TARGET_PPC64 */

#endif /* CONFIG_USER_ONLY */

#endif /* MMU_BOOOK3S_V3_H */