/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
*
* @(#)pmap.h 8.1 (Berkeley) 6/10/93
*/
/*
* Copyright (c) 1987 Carnegie-Mellon University
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
*
* @(#)pmap.h 8.1 (Berkeley) 6/10/93
*/
/*
* We need the pmap_segtab's to be aligned on MIPS*R2 so we can use the
* EXT/INS instructions on their addresses.
*/
#if (MIPS32R2 + MIPS64R2 + MIPS64R2_RMIXL) > 0
#define PMAP_SEGTAB_ALIGN __aligned(sizeof(void *)*NSEGPG) __section(".data1")
#endif
// these use register_t so we can pass XKPHYS addresses to them on N32
bool pmap_md_direct_mapped_vaddr_p(register_t);
paddr_t pmap_md_direct_mapped_vaddr_to_paddr(register_t);
bool pmap_md_io_vaddr_p(vaddr_t);
/*
* Alternate mapping hooks for pool pages. Avoids thrashing the TLB.
*/
vaddr_t pmap_md_map_poolpage(paddr_t, size_t);
paddr_t pmap_md_unmap_poolpage(vaddr_t, size_t);
struct vm_page *pmap_md_alloc_poolpage(int);
/*
* Other hooks for the pool allocator.
*/
paddr_t pmap_md_pool_vtophys(vaddr_t);
vaddr_t pmap_md_pool_phystov(paddr_t);
#define POOL_VTOPHYS(va) pmap_md_pool_vtophys((vaddr_t)va)
#define POOL_PHYSTOV(pa) pmap_md_pool_phystov((paddr_t)pa)
/*
* The user address space is 2Gb (0x0 - 0x80000000).
* User programs are laid out in memory as follows:
* address
* USRTEXT 0x00001000
* USRDATA USRTEXT + text_size
* USRSTACK 0x7FFFFFFF
*
* The user address space is mapped using a two level structure where
* virtual address bits 30..22 are used to index into a segment table which
* points to a page worth of PTEs (4096 page can hold 1024 PTEs).
* Bits 21..12 are then used to index a PTE which describes a page within
* a segment.
*
* The wired entries in the TLB will contain the following:
* 0-1 (UPAGES) for curproc user struct and kernel stack.
*
* Note: The kernel doesn't use the same data structures as user programs.
* All the PTE entries are stored in a single array in Sysmap which is
* dynamically allocated at boot time.
*/
#define pmap_phys_address(x) mips_ptob(x)
/*
* Bootstrap the system enough to run with virtual memory.
*/
void pmap_bootstrap(void);
void pmap_md_alloc_ephemeral_address_space(struct cpu_info *);
void pmap_procwr(struct proc *, vaddr_t, size_t);
#define PMAP_NEED_PROCWR
/*
* pmap_prefer() helps reduce virtual-coherency exceptions in
* the virtually-indexed cache on mips3 CPUs.
*/
#ifdef MIPS3_PLUS
#define PMAP_PREFER(pa, va, sz, td) pmap_prefer((pa), (va), (sz), (td))
void pmap_prefer(vaddr_t, vaddr_t *, vsize_t, int);
#endif /* MIPS3_PLUS */
#define PMAP_ENABLE_PMAP_KMPAGE /* enable the PMAP_KMPAGE flag */
#ifdef MIPS64_SB1
/* uncached accesses are bad; all accesses should be cached (and coherent) */
#undef PMAP_PAGEIDLEZERO
#define PMAP_PAGEIDLEZERO(pa) (pmap_zero_page(pa), true)
