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      1 /* $NetBSD: plicreg.h,v 1.1 2023/05/07 12:41:48 skrll Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2022 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Portions of this code is derived from software contributed to The NetBSD
      8  * Foundation by Simon Burge.
      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 _RISCV_PLICREG_H
     33 #define	_RISCV_PLICREG_H
     34 
     35 #define	PLIC_FIRST_IRQ		1	/* irq 0 is reserved */
     36 #define	PLIC_MAX_IRQ		1023
     37 #define	PLIC_NIRQ		(PLIC_MAX_IRQ + 1)
     38 
     39 #define	PLIC_PRIORITY_BASE	0x000000
     40 #define	PLIC_PENDING_BASE	0x001000
     41 
     42 #define	PLIC_ENABLE_BASE	0x002000
     43 #define	PLIC_ENABLE_SIZE	(PLIC_NIRQ / NBBY)
     44 
     45 #define	PLIC_CONTEXT_BASE	0x200000
     46 #define	PLIC_CONTEXT_SIZE	0x1000
     47 #define	PLIC_MAX_CONTEXT	15871
     48 #define	PLIC_NCONTEXT		(PLIC_MAX_CONTEXT + 1)
     49 #define	PLIC_THRESHOLD_OFFS	  0
     50 #define	PLIC_CLAIM_COMPLETE_OFFS  4	/* read to claim, write to complete */
     51 
     52 #endif /* _RISCV_PLICREG_H */
     53