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      1 /*	$NetBSD: sr_601.h,v 1.6 2021/02/27 01:16:52 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002, 2004 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Klaus J. Klein.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _POWERPC_OEA_SR_601_H_
     33 #define _POWERPC_OEA_SR_601_H_
     34 
     35 /*
     36  * I/O Controller Interface Address Translation segment register
     37  * format specific to the PowerPC 601, per PowerPC 601 RISC
     38  * Microprocessor User's Manual, section 6.10.1.
     39  *
     40  * This format applies to a segment register only when its T bit is set.
     41  */
     42 
     43 #define	SR601_T		0x80000000	/* Selects this format */
     44 #define	SR601_Ks	0x40000000	/* Key-supervisor */
     45 #define	SR601_Ku	0x20000000	/* Key-user */
     46 #define	SR601_BUID	0x1ff00000	/* Bus unit ID */
     47 #define	SR601_BUID_SHFT	20
     48 #define	SR601_CSI	0x000ffff0	/* Controller Specific Information */
     49 #define	SR601_CSI_SHFT	4
     50 #define	SR601_PACKET1	0x0000000f	/* Address bits 0:3 of packet 1 cycle */
     51 
     52 #define	SR601_BUID_MEMFORCED	0x07f	/* Translate to memory access, taking
     53 					   PA[0:3] from the PACKET1 field */
     54 
     55 #define	SR601(key, buid, csi, p1)				\
     56 	(SR601_T |						\
     57 	 (key) |						\
     58 	 (buid) << SR601_BUID_SHFT |				\
     59 	 (csi) << SR601_CSI_SHFT | (p1))
     60 
     61 #define SR601_VALID_P(sr)					\
     62 	((sr) & SR601_T)
     63 
     64 #define	SR601_PA_MATCH_P(sr, pa) 				\
     65 	 (((sr) & SR601_PACKET1) == ((pa) >> ADDR_SR_SHFT))
     66 
     67 #endif /* !_POWERPC_OEA_SR_601_H_ */
     68