1*8b7897c2Sskrll /* $NetBSD: pmap_devmap.h,v 1.2 2024/11/25 22:03:44 skrll Exp $ */ 26d5cf357Sskrll 36d5cf357Sskrll /*- 46d5cf357Sskrll * Copyright (c) 2022 The NetBSD Foundation, Inc. 56d5cf357Sskrll * All rights reserved. 66d5cf357Sskrll * 76d5cf357Sskrll * This code is derived from software contributed to The NetBSD Foundation 86d5cf357Sskrll * by Nick Hudson 96d5cf357Sskrll * 106d5cf357Sskrll * Redistribution and use in source and binary forms, with or without 116d5cf357Sskrll * modification, are permitted provided that the following conditions 126d5cf357Sskrll * are met: 136d5cf357Sskrll * 1. Redistributions of source code must retain the above copyright 146d5cf357Sskrll * notice, this list of conditions and the following disclaimer. 156d5cf357Sskrll * 2. Redistributions in binary form must reproduce the above copyright 166d5cf357Sskrll * notice, this list of conditions and the following disclaimer in the 176d5cf357Sskrll * documentation and/or other materials provided with the distribution. 186d5cf357Sskrll * 196d5cf357Sskrll * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 206d5cf357Sskrll * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 216d5cf357Sskrll * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 226d5cf357Sskrll * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 236d5cf357Sskrll * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 246d5cf357Sskrll * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 256d5cf357Sskrll * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 266d5cf357Sskrll * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 276d5cf357Sskrll * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 286d5cf357Sskrll * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 296d5cf357Sskrll * POSSIBILITY OF SUCH DAMAGE. 306d5cf357Sskrll */ 316d5cf357Sskrll 326d5cf357Sskrll 336d5cf357Sskrll #ifndef _UVM_PMAP_DEVMAP_H_ 346d5cf357Sskrll #define _UVM_PMAP_DEVMAP_H_ 356d5cf357Sskrll 36*8b7897c2Sskrll #ifdef _KERNEL 37*8b7897c2Sskrll 386d5cf357Sskrll typedef struct pmap_devmap { 396d5cf357Sskrll vaddr_t pd_va; /* virtual address */ 406d5cf357Sskrll paddr_t pd_pa; /* physical address */ 416d5cf357Sskrll psize_t pd_size; /* size of region */ 426d5cf357Sskrll vm_prot_t pd_prot; /* protection code */ 436d5cf357Sskrll u_int pd_flags; /* flags for pmap_kenter_{pa,range} */ 446d5cf357Sskrll } pmap_devmap_t; 456d5cf357Sskrll 466d5cf357Sskrll 476d5cf357Sskrll bool pmap_devmap_bootstrapped_p(void); 486d5cf357Sskrll void pmap_devmap_register(const struct pmap_devmap *); 496d5cf357Sskrll void pmap_devmap_bootstrap(vaddr_t, const struct pmap_devmap *); 506d5cf357Sskrll vaddr_t pmap_devmap_root(void); 516d5cf357Sskrll const struct pmap_devmap *pmap_devmap_find_pa(paddr_t, psize_t); 526d5cf357Sskrll const struct pmap_devmap *pmap_devmap_find_va(vaddr_t, vsize_t); 536d5cf357Sskrll 546d5cf357Sskrll #define DEVMAP_ENTRY_FLAGS(va, pa, sz, fl) \ 556d5cf357Sskrll { \ 566d5cf357Sskrll .pd_va = DEVMAP_ALIGN(va), \ 576d5cf357Sskrll .pd_pa = DEVMAP_ALIGN(pa), \ 586d5cf357Sskrll .pd_size = DEVMAP_SIZE(sz), \ 596d5cf357Sskrll .pd_prot = VM_PROT_READ | VM_PROT_WRITE, \ 606d5cf357Sskrll .pd_flags = (fl), \ 616d5cf357Sskrll } 626d5cf357Sskrll 636d5cf357Sskrll #define DEVMAP_ENTRY(va, pa, sz) \ 646d5cf357Sskrll DEVMAP_ENTRY_FLAGS(va, pa, sz, DEVMAP_FLAGS) 656d5cf357Sskrll 666d5cf357Sskrll #define DEVMAP_ENTRY_END { 0 } 676d5cf357Sskrll 68*8b7897c2Sskrll #endif /* _KERNEL */ 69*8b7897c2Sskrll 706d5cf357Sskrll #endif /* _UVM_PMAP_DEVMAP_H_ */ 71