/* $OpenBSD: pmap.h,v 1.66 2024/06/18 12:37:29 jsg Exp $ */ /* $NetBSD: pmap.h,v 1.1 1996/09/30 16:34:29 ws Exp $ */ /*- * 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. */ #ifndef _POWERPC_PMAP_H_ #define _POWERPC_PMAP_H_ #include <machine/pte.h> /* * Segment registers */ #ifndef _LOCORE typedef u_int sr_t; #endif /* _LOCORE */ #define SR_TYPE 0x80000000 #define SR_SUKEY 0x40000000 #define SR_PRKEY 0x20000000 #define SR_NOEXEC 0x10000000 #define SR_VSID 0x00ffffff /* * bit * 3 2 2 2 2 1 1 1 1 1 0 * 1 8 7 4 0 9 6 5 2 1 0 * |XXXX|XXXX XXXX|XXXX XXXX|XXXX XXXX XXXX * * bits 28 - 31 contain SR * bits 20 - 27 contain L1 for VtoP translation * bits 12 - 19 contain L2 for VtoP translation * bits 0 - 11 contain page offset */ #ifndef _LOCORE /* V->P mapping data */ #define VP_SR_SIZE 16 #define VP_SR_MASK (VP_SR_SIZE-1) #define VP_SR_POS 28 #define VP_IDX1_SIZE 256 #define VP_IDX1_MASK (VP_IDX1_SIZE-1) #define VP_IDX1_POS 20 #define VP_IDX2_SIZE 256 #define VP_IDX2_MASK (VP_IDX2_SIZE-1) #define VP_IDX2_POS 12 /* cache flags */ #define PMAP_CACHE_DEFAULT 0 /* WB cache managed mem, devices not */ #define PMAP_CACHE_CI 1 /* cache inhibit */ #define PMAP_CACHE_WT 2 /* writethru */ #define PMAP_CACHE_WB 3 /* writeback */ #include <sys/mutex.h> #include <sys/queue.h> #ifdef _KERNEL /* * Pmap stuff */ struct pmap { sr_t pm_sr[16]; /* segments used in this pmap */ struct pmapvp *pm_vp[VP_SR_SIZE]; /* virtual to physical table */ u_int32_t pm_exec[16]; /* segments used in this pmap */ int pm_refs; /* ref count */ struct pmap_statistics pm_stats; /* pmap statistics */ struct mutex pm_mtx; /* protect VP table */ }; /* * Segment handling stuff */ #define PPC_SEGMENT_LENGTH 0x10000000 #define PPC_SEGMENT_MASK 0xf0000000 /* * Some system constants */ #ifndef NPMAPS #define NPMAPS 32768 /* Number of pmaps in system */ #endif typedef struct pmap *pmap_t; extern struct pmap kernel_pmap_; #define pmap_kernel() (&kernel_pmap_) #define pmap_clear_modify(pg) pmap_clear_attrs((pg), PG_PMAP_MOD) #define pmap_clear_reference(pg) pmap_clear_attrs((pg), PG_PMAP_REF) #define pmap_is_modified(pg) pmap_test_attrs((pg), PG_PMAP_MOD) #define pmap_is_referenced(pg) pmap_test_attrs((pg), PG_PMAP_REF) #define pmap_unwire(pm, va) #define pmap_update(pmap) /* nothing (yet) */ #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) /* * Alternate mapping methods for pool. * Really simple. 0x0->0x80000000 contain 1->1 mappings of the physical * memory. - XXX */ #define pmap_map_direct(pg) ((vaddr_t)VM_PAGE_TO_PHYS(pg)) #define pmap_unmap_direct(va) PHYS_TO_VM_PAGE((paddr_t)va) #define __HAVE_PMAP_DIRECT void pmap_bootstrap(u_int kernelstart, u_int kernelend); void pmap_enable_mmu(); int pmap_clear_attrs(struct vm_page *, unsigned int); int pmap_test_attrs(struct vm_page *, unsigned int); void pmap_release(struct pmap *); #ifdef ALTIVEC int pmap_copyinsn(pmap_t, vaddr_t, uint32_t *); #endif void pmap_real_memory(vaddr_t *start, vsize_t *size); int pte_spill_v(struct pmap *pm, u_int32_t va, u_int32_t dsisr, int exec_fault); int reserve_dumppages(caddr_t p); #define pmap_init_percpu() do { /* nothing */ } while (0) #define pmap_unuse_final(p) /* nothing */ #define pmap_remove_holes(vm) do { /* nothing */ } while (0) #define PMAP_CHECK_COPYIN (ppc_proc_is_64b == 0) #define PMAP_STEAL_MEMORY #define PG_PMAP_MOD PG_PMAP0 #define PG_PMAP_REF PG_PMAP1 #define PG_PMAP_EXE PG_PMAP2 #define PG_PMAP_UC PG_PMAP3 /* * MD flags that we use for pmap_enter (in the pa): */ #define PMAP_PA_MASK ~((paddr_t)PAGE_MASK) /* to remove the flags */ #define PMAP_NOCACHE 0x1 /* map uncached */ #define PMAP_WT 0x2 /* map write-through */ #endif /* _KERNEL */ struct vm_page_md { struct mutex pv_mtx; LIST_HEAD(,pte_desc) pv_list; }; #define VM_MDPAGE_INIT(pg) do { \ mtx_init(&(pg)->mdpage.pv_mtx, IPL_VM); \ LIST_INIT(&((pg)->mdpage.pv_list)); \ } while (0) #endif /* _LOCORE */ #endif /* _POWERPC_PMAP_H_ */
