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- /*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (C) 2009 Nathan Whitehorn
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
- *
- * $FreeBSD$
- */
- #ifndef _MACHINE_SLB_H_
- #define _MACHINE_SLB_H_
- /*
- * Bit definitions for segment lookaside buffer entries.
- *
- * PowerPC Microprocessor Family: The Programming Environments for 64-bit
- * Microprocessors, section 7.4.2.1
- *
- * Note that these bitmasks are relative to the values for one of the two
- * values for slbmte, slbmfee, and slbmfev, not the internal SLB
- * representation.
- */
- #define SLBV_KS 0x0000000000000800UL /* Supervisor-state prot key */
- #define SLBV_KP 0x0000000000000400UL /* User-state prot key */
- #define SLBV_N 0x0000000000000200UL /* No-execute protection */
- #define SLBV_L 0x0000000000000100UL /* Large page selector */
- #define SLBV_CLASS 0x0000000000000080UL /* Class selector */
- #define SLBV_VSID_MASK 0xfffffffffffff000UL /* Virtual segment ID mask */
- #define SLBV_VSID_SHIFT 12
- /*
- * Make a predictable 1:1 map from ESIDs to VSIDs for the kernel. Hash table
- * coverage is increased by swizzling the ESID and multiplying by a prime
- * number (0x13bb).
- */
- #define KERNEL_VSID_BIT 0x0000001000000000UL /* Bit set in all kernel VSIDs */
- #define KERNEL_VSID(esid) ((((((uint64_t)esid << 8) | ((uint64_t)esid >> 28)) \
- * 0x13bbUL) & (KERNEL_VSID_BIT - 1)) | \
- KERNEL_VSID_BIT)
- #define SLBE_VALID 0x0000000008000000UL /* SLB entry valid */
- #define SLBE_INDEX_MASK 0x0000000000000fffUL /* SLB index mask*/
- #define SLBE_ESID_MASK 0xfffffffff0000000UL /* Effective segment ID mask */
- #define SLBE_ESID_SHIFT 28
- /*
- * SLB page sizes encoding, as present in property ibm,segment-page-sizes
- * of CPU device tree node.
- *
- * See LoPAPR: CPU Node Properties, section C.6.1.4.
- */
- #define SLB_PGSZ_4K_4K 0
- /* Virtual real-mode VSID in LPARs */
- #define VSID_VRMA 0x1ffffff
- /*
- * User segment for copyin/out
- */
- #define USER_SLB_SLOT 0
- #define USER_SLB_SLBE (((USER_ADDR >> ADDR_SR_SHFT) << SLBE_ESID_SHIFT) | \
- SLBE_VALID | USER_SLB_SLOT)
- struct slb {
- uint64_t slbv;
- uint64_t slbe;
- };
- struct pmap;
- void handle_kernel_slb_spill(int, register_t, register_t);
- int handle_user_slb_spill(struct pmap *pm, vm_offset_t addr);
- #endif /* !_MACHINE_SLB_H_ */
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