d31111442e
Summary: Radix on AIM, and all of Book-E (currently), can do direct addressing of user space, instead of needing to map user addresses into kernel space. Take advantage of this to optimize the copy(9) functions for this behavior, and avoid effectively NOP translations. Test Plan: Tested on powerpcspe, powerpc64/booke, powerpc64/AIM Reviewed by: bdragon Differential Revision: https://reviews.freebsd.org/D25129
160 lines
5.0 KiB
C
160 lines
5.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 2001 David E. O'Brien
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)param.h 5.8 (Berkeley) 6/28/91
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* $FreeBSD$
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*/
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#ifndef _POWERPC_INCLUDE_PARAM_H_
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#define _POWERPC_INCLUDE_PARAM_H_
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/*
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* Machine dependent constants for PowerPC
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*/
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#include <machine/_align.h>
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/* Needed to display interrupts on OFW PCI */
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#define __PCI_REROUTE_INTERRUPT
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#ifndef MACHINE
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#define MACHINE "powerpc"
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#endif
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#ifndef MACHINE_ARCH
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#ifdef __powerpc64__
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#define MACHINE_ARCH "powerpc64"
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#else
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#ifdef __SPE__
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#define MACHINE_ARCH "powerpcspe"
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#else
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#define MACHINE_ARCH "powerpc"
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#endif
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#endif
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#endif
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#define MID_MACHINE MID_POWERPC
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#ifdef __powerpc64__
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#ifndef MACHINE_ARCH32
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#define MACHINE_ARCH32 "powerpc"
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#endif
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#endif
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#ifdef SMP
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#ifndef MAXCPU
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#define MAXCPU 256
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#endif
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#else
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#define MAXCPU 1
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#endif
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#ifndef MAXMEMDOM
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#define MAXMEMDOM 8
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#endif
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#define ALIGNBYTES _ALIGNBYTES
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#define ALIGN(p) _ALIGN(p)
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/*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*/
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#define ALIGNED_POINTER(p, t) ((((uintptr_t)(p)) & (sizeof (t) - 1)) == 0)
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/*
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* CACHE_LINE_SIZE is the compile-time maximum cache line size for an
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* architecture. It should be used with appropriate caution.
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*/
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#define CACHE_LINE_SHIFT 7
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#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
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#define PAGE_MASK (PAGE_SIZE - 1)
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#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
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#define NPDEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
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#define L1_PAGE_SIZE_SHIFT 39
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#define L1_PAGE_SIZE (1UL<<L1_PAGE_SIZE_SHIFT)
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#define L1_PAGE_MASK (L1_PAGE_SIZE-1)
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#define L2_PAGE_SIZE_SHIFT 30
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#define L2_PAGE_SIZE (1UL<<L2_PAGE_SIZE_SHIFT)
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#define L2_PAGE_MASK (L2_PAGE_SIZE-1)
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#define L3_PAGE_SIZE_SHIFT 21
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#define L3_PAGE_SIZE (1UL<<L3_PAGE_SIZE_SHIFT)
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#define L3_PAGE_MASK (L3_PAGE_SIZE-1)
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#define MAXPAGESIZES 3 /* maximum number of supported page sizes */
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#define RELOCATABLE_KERNEL 1 /* kernel may relocate during startup */
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#ifndef KSTACK_PAGES
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#ifdef __powerpc64__
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#define KSTACK_PAGES 12 /* includes pcb */
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#else
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#define KSTACK_PAGES 4 /* includes pcb */
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#endif
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#endif
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#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
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#define USPACE (kstack_pages * PAGE_SIZE) /* total size of pcb */
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#define COPYFAULT 0x1
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#define FUSUFAULT 0x2
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/*
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* Mach derived conversion macros
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*/
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#define trunc_page(x) ((x) & ~(PAGE_MASK))
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#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
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#define trunc_2mpage(x) ((unsigned long)(x) & ~L3_PAGE_MASK)
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#define round_2mpage(x) ((((unsigned long)(x)) + L3_PAGE_MASK) & ~L3_PAGE_MASK)
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#define trunc_1gpage(x) ((unsigned long)(x) & ~L2_PAGE_MASK)
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#define atop(x) ((x) >> PAGE_SHIFT)
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#define ptoa(x) ((x) << PAGE_SHIFT)
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#define powerpc_btop(x) ((x) >> PAGE_SHIFT)
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#define powerpc_ptob(x) ((x) << PAGE_SHIFT)
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#define pgtok(x) ((x) * (PAGE_SIZE / 1024UL))
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#define btoc(x) ((vm_offset_t)(((x)+PAGE_MASK)>>PAGE_SHIFT))
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#endif /* !_POWERPC_INCLUDE_PARAM_H_ */
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