/*- * SPDX-License-Identifier: BSD-4-Clause * * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $NetBSD: pte.h,v 1.2 1998/08/31 14:43:40 tsubai Exp $ */ #ifndef _MACHINE_PTE_H_ #define _MACHINE_PTE_H_ #if defined(AIM) /* * Page Table Entries */ #ifndef LOCORE /* 32-bit PTE */ struct pte { u_int32_t pte_hi; u_int32_t pte_lo; }; struct pteg { struct pte pt[8]; }; /* 64-bit (long) PTE */ struct lpte { u_int64_t pte_hi; u_int64_t pte_lo; }; struct lpteg { struct lpte pt[8]; }; /* Partition table entry */ struct pate { u_int64_t pagetab; u_int64_t proctab; }; /* Process table entry */ struct prte { u_int64_t proctab0; u_int64_t proctab1; }; typedef struct pte pte_t; typedef struct lpte lpte_t; #endif /* LOCORE */ /* 32-bit PTE definitions */ /* High word: */ #define PTE_VALID 0x80000000 #define PTE_VSID_SHFT 7 #define PTE_HID 0x00000040 #define PTE_API 0x0000003f /* Low word: */ #define PTE_RPGN 0xfffff000 #define PTE_REF 0x00000100 #define PTE_CHG 0x00000080 #define PTE_WIMG 0x00000078 #define PTE_W 0x00000040 #define PTE_I 0x00000020 #define PTE_M 0x00000010 #define PTE_G 0x00000008 #define PTE_PP 0x00000003 #define PTE_SO 0x00000000 /* Super. Only (U: XX, S: RW) */ #define PTE_SW 0x00000001 /* Super. Write-Only (U: RO, S: RW) */ #define PTE_BW 0x00000002 /* Supervisor (U: RW, S: RW) */ #define PTE_BR 0x00000003 /* Both Read Only (U: RO, S: RO) */ #define PTE_RW PTE_BW #define PTE_RO PTE_BR #define PTE_EXEC 0x00000200 /* pseudo bit in attrs; page is exec */ /* 64-bit PTE definitions */ /* High quadword: */ #define LPTE_VSID_SHIFT 12 #define LPTE_AVPN_MASK 0xFFFFFFFFFFFFFF80ULL #define LPTE_AVA_MASK 0x3FFFFFFFFFFFFF80ULL #define LPTE_API 0x0000000000000F80ULL #define LPTE_SWBITS 0x0000000000000078ULL #define LPTE_WIRED 0x0000000000000010ULL #define LPTE_LOCKED 0x0000000000000008ULL #define LPTE_BIG 0x0000000000000004ULL /* 4kb/16Mb page */ #define LPTE_HID 0x0000000000000002ULL #define LPTE_VALID 0x0000000000000001ULL /* Low quadword: */ #define LP_4K_16M 0x38 /* 4KB base, 16MB actual page size */ #define EXTEND_PTE(x) UINT64_C(x) /* make constants 64-bit */ #define LPTE_RPGN 0xfffffffffffff000ULL #define LPTE_LP_MASK 0x00000000000ff000ULL #define LPTE_LP_SHIFT 12 #define LPTE_LP_4K_16M ((unsigned long long)(LP_4K_16M) << LPTE_LP_SHIFT) #define LPTE_REF EXTEND_PTE( PTE_REF ) #define LPTE_CHG EXTEND_PTE( PTE_CHG ) #define LPTE_WIMG EXTEND_PTE( PTE_WIMG ) #define LPTE_W EXTEND_PTE( PTE_W ) #define LPTE_I EXTEND_PTE( PTE_I ) #define LPTE_M EXTEND_PTE( PTE_M ) #define LPTE_G EXTEND_PTE( PTE_G ) #define LPTE_NOEXEC 0x0000000000000004ULL #define LPTE_PP EXTEND_PTE( PTE_PP ) #define LPTE_SO EXTEND_PTE( PTE_SO ) /* Super. Only */ #define LPTE_SW EXTEND_PTE( PTE_SW ) /* Super. Write-Only */ #define LPTE_BW EXTEND_PTE( PTE_BW ) /* Supervisor */ #define LPTE_BR EXTEND_PTE( PTE_BR ) /* Both Read Only */ #define LPTE_RW LPTE_BW #define LPTE_RO LPTE_BR /* HPT superpage definitions */ #define HPT_SP_SHIFT (VM_LEVEL_0_ORDER + PAGE_SHIFT) #define HPT_SP_SIZE (1 << HPT_SP_SHIFT) #define HPT_SP_MASK (HPT_SP_SIZE - 1) #define HPT_SP_PAGES (1 << VM_LEVEL_0_ORDER) /* POWER ISA 3.0 Radix Table Definitions */ #define RPTE_VALID 0x8000000000000000ULL #define RPTE_LEAF 0x4000000000000000ULL /* is a PTE: always 1 */ #define RPTE_SW0 0x2000000000000000ULL #define RPTE_RPN_MASK 0x00FFFFFFFFFFF000ULL #define RPTE_RPN_SHIFT 12 #define RPTE_SW1 0x0000000000000800ULL #define RPTE_SW2 0x0000000000000400ULL #define RPTE_SW3 0x0000000000000200ULL #define RPTE_R 0x0000000000000100ULL #define RPTE_C 0x0000000000000080ULL #define RPTE_MANAGED RPTE_SW1 #define RPTE_WIRED RPTE_SW2 #define RPTE_PROMOTED RPTE_SW3 #define RPTE_ATTR_MASK 0x0000000000000030ULL #define RPTE_ATTR_MEM 0x0000000000000000ULL /* PTE M */ #define RPTE_ATTR_SAO 0x0000000000000010ULL /* PTE WIM */ #define RPTE_ATTR_GUARDEDIO 0x0000000000000020ULL /* PTE IMG */ #define RPTE_ATTR_UNGUARDEDIO 0x0000000000000030ULL /* PTE IM */ #define RPTE_EAA_MASK 0x000000000000000FULL #define RPTE_EAA_P 0x0000000000000008ULL /* Supervisor only */ #define RPTE_EAA_R 0x0000000000000004ULL /* Read allowed */ #define RPTE_EAA_W 0x0000000000000002ULL /* Write (+read) */ #define RPTE_EAA_X 0x0000000000000001ULL /* Execute allowed */ #define RPDE_VALID RPTE_VALID #define RPDE_LEAF RPTE_LEAF /* is a PTE: always 0 */ #define RPDE_NLB_MASK 0x00FFFFFFFFFFFF00ULL #define RPDE_NLB_SHIFT 8 #define RPDE_NLS_MASK 0x000000000000001FULL #define PG_FRAME (0x000ffffffffff000ul) #define PG_PS_FRAME (0x000fffffffe00000ul) /* * Extract bits from address */ #define ADDR_SR_SHFT 28 #define ADDR_PIDX 0x0ffff000UL #define ADDR_PIDX_SHFT 12 #define ADDR_API_SHFT 22 #define ADDR_API_SHFT64 16 #define ADDR_POFF 0x00000fffUL /* * Bits in DSISR: */ #define DSISR_DIRECT 0x80000000 #define DSISR_NOTFOUND 0x40000000 #define DSISR_PROTECT 0x08000000 #define DSISR_INVRX 0x04000000 #define DSISR_STORE 0x02000000 #define DSISR_DABR 0x00400000 #define DSISR_SEGMENT 0x00200000 #define DSISR_EAR 0x00100000 /* * Bits in SRR1 on ISI: */ #define ISSRR1_NOTFOUND 0x40000000 #define ISSRR1_DIRECT 0x10000000 #define ISSRR1_PROTECT 0x08000000 #define ISSRR1_SEGMENT 0x00200000 #else /* BOOKE */ #include /* * Flags for pte_remove() routine. */ #define PTBL_HOLD 0x00000001 /* do not unhold ptbl pages */ #define PTBL_UNHOLD 0x00000002 /* unhold and attempt to free ptbl pages */ #define PTBL_HOLD_FLAG(pmap) (((pmap) == kernel_pmap) ? PTBL_HOLD : PTBL_UNHOLD) /* * Page Table Entry definitions and macros. * * RPN need only be 32-bit because Book-E has 36-bit addresses, and the smallest * page size is 4k (12-bit mask), so RPN can really fit into 24 bits. */ #ifndef LOCORE typedef uint64_t pte_t; #endif /* RPN mask, TLB0 4K pages */ #define PTE_PA_MASK PAGE_MASK #if defined(BOOKE_E500) /* PTE bits assigned to MAS2, MAS3 flags */ #define PTE_MAS2_SHIFT 19 #define PTE_W (MAS2_W << PTE_MAS2_SHIFT) #define PTE_I (MAS2_I << PTE_MAS2_SHIFT) #define PTE_M (MAS2_M << PTE_MAS2_SHIFT) #define PTE_G (MAS2_G << PTE_MAS2_SHIFT) #define PTE_MAS2_MASK (MAS2_G | MAS2_M | MAS2_I | MAS2_W) #define PTE_MAS3_SHIFT 2 #define PTE_UX (MAS3_UX << PTE_MAS3_SHIFT) #define PTE_SX (MAS3_SX << PTE_MAS3_SHIFT) #define PTE_UW (MAS3_UW << PTE_MAS3_SHIFT) #define PTE_SW (MAS3_SW << PTE_MAS3_SHIFT) #define PTE_UR (MAS3_UR << PTE_MAS3_SHIFT) #define PTE_SR (MAS3_SR << PTE_MAS3_SHIFT) #define PTE_MAS3_MASK ((MAS3_UX | MAS3_SX | MAS3_UW \ | MAS3_SW | MAS3_UR | MAS3_SR) << PTE_MAS3_SHIFT) #define PTE_PS_SHIFT 8 #define PTE_PS_4KB (2 << PTE_PS_SHIFT) #endif /* Other PTE flags */ #define PTE_VALID 0x00000001 /* Valid */ #define PTE_MODIFIED 0x00001000 /* Modified */ #define PTE_WIRED 0x00002000 /* Wired */ #define PTE_MANAGED 0x00000002 /* Managed */ #define PTE_REFERENCED 0x00040000 /* Referenced */ /* * Page Table Entry definitions and macros. * * We use the hardware page table entry format: * * 63 24 23 19 18 17 14 13 12 11 8 7 6 5 4 3 2 1 0 * --------------------------------------------------------------- * ARPN(12:51) WIMGE R U0:U3 SW0 C PSIZE UX SX UW SW UR SR SW1 V * --------------------------------------------------------------- */ /* PTE fields. */ #define PTE_TSIZE_SHIFT (63-54) #define PTE_TSIZE_MASK 0x7 #define PTE_TSIZE_SHIFT_DIRECT (63-55) #define PTE_TSIZE_MASK_DIRECT 0xf #define PTE_PS_DIRECT(ps) (ps<> PTE_TSIZE_SHIFT) & PTE_TSIZE_MASK) #define PTE_TSIZE_DIRECT(pte) (int)((*pte >> PTE_TSIZE_SHIFT_DIRECT) & PTE_TSIZE_MASK_DIRECT) /* Macro argument must of pte_t type. */ #define PTE_ARPN_SHIFT 12 #define PTE_FLAGS_MASK 0x00ffffff #define PTE_RPN_FROM_PA(pa) (((pa) & ~PAGE_MASK) << PTE_ARPN_SHIFT) #define PTE_PA(pte) ((vm_paddr_t)(*pte >> PTE_ARPN_SHIFT) & ~PAGE_MASK) #define PTE_ISVALID(pte) ((*pte) & PTE_VALID) #define PTE_ISWIRED(pte) ((*pte) & PTE_WIRED) #define PTE_ISMANAGED(pte) ((*pte) & PTE_MANAGED) #define PTE_ISMODIFIED(pte) ((*pte) & PTE_MODIFIED) #define PTE_ISREFERENCED(pte) ((*pte) & PTE_REFERENCED) #endif /* BOOKE */ /* Book-E page table format, broken out for the generic pmap.h. */ #ifdef __powerpc64__ #include /* * The virtual address is: * * 4K page size * +-----+-----------+-------+-------------+-------------+----------------+ * | - | pg_root |pdir_l1| dir# | pte# | off in 4K page | * +-----+-----------+-------+-------------+-------------+----------------+ * 63 52 51 39 38 30 29 ^ 21 20 ^ 12 11 0 * | | * index in 1 page of pointers * * 1st level - Root page table * * pp2d consists of PG_ROOT_NENTRIES entries, each being a pointer to * second level entity, i.e. the page table directory (pdir). */ #define PG_ROOT_H 51 #define PG_ROOT_L 39 #define PG_ROOT_SIZE (1UL << PG_ROOT_L) /* va range mapped by pp2d */ #define PG_ROOT_SHIFT PG_ROOT_L #define PG_ROOT_NUM (PG_ROOT_H - PG_ROOT_L + 1) #define PG_ROOT_MASK ((1 << PG_ROOT_NUM) - 1) #define PG_ROOT_IDX(va) ((va >> PG_ROOT_SHIFT) & PG_ROOT_MASK) #define PG_ROOT_NENTRIES (1 << PG_ROOT_NUM) #define PG_ROOT_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry **)) */ /* * 2nd level - page directory directory (pdir l1) * * pdir consists of PDIR_NENTRIES entries, each being a pointer to * second level entity, i.e. the actual page table (ptbl). */ #define PDIR_L1_H (PG_ROOT_L-1) #define PDIR_L1_L 30 #define PDIR_L1_NUM (PDIR_L1_H-PDIR_L1_L+1) #define PDIR_L1_SIZE (1 << PDIR_L1_L) /* va range mapped by pdir */ #define PDIR_L1_MASK ((1<> PDIR_L1_SHIFT) & PDIR_L1_MASK) #define PDIR_L1_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry *)) */ #define PDIR_L1_PAGES ((PDIR_L1_NENTRIES * (1<> PDIR_SHIFT) & PDIR_MASK) #define PDIR_ENTRY_SHIFT 3 /* log2 (sizeof(struct pte_entry *)) */ #define PDIR_PAGES ((PDIR_NENTRIES * (1<> PTBL_SHIFT) & PTBL_MASK) #define PTBL_ENTRY_SHIFT 3 /* log2 (sizeof (struct pte_entry)) */ #define PTBL_PAGES ((PTBL_NENTRIES * (1<> PDIR_SHIFT) #define PDIR_ENTRY_SHIFT 2 /* entry size is 2^2 = 4 bytes */ /* * 2nd level - page table (ptbl) * * Page table covers 1024 page table entries. Page * table entry (pte) is 32 bit wide and defines mapping * for a single page. */ #define PTBL_SHIFT PAGE_SHIFT #define PTBL_SIZE PAGE_SIZE /* va range mapped by ptbl entry */ #define PTBL_MASK ((PDIR_SIZE - 1) & ~((1 << PAGE_SHIFT) - 1)) #define PTBL_NENTRIES 1024 /* number of pages mapped by ptbl */ /* Returns ptbl entry number for given va */ #define PTBL_IDX(va) (((va) & PTBL_MASK) >> PTBL_SHIFT) /* Size of ptbl in pages, 1024 entries, each sizeof(struct pte_entry). */ #define PTBL_PAGES 2 #define PTBL_ENTRY_SHIFT 3 /* entry size is 2^3 = 8 bytes */ #endif #endif /* _MACHINE_PTE_H_ */