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plicvar.h revision 1.1 
      1 /* $NetBSD: plicvar.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_PLICVAR_H
     33 #define	_RISCV_PLICVAR_H
     34 
     35 struct plic_intrhand {
     36 	int	(*ih_func)(void *);
     37 	void	*ih_arg;
     38 	bool	ih_mpsafe;
     39 	u_int	ih_irq;
     40 	u_int	ih_cidx;
     41 };
     42 
     43 struct plic_softc {
     44 	device_t		sc_dev;
     45 	bus_space_tag_t		sc_bst;
     46 	bus_space_handle_t	sc_bsh;
     47 
     48 	uint32_t		sc_ndev;
     49 
     50 	uint32_t		sc_context[MAXCPUS];
     51 	struct plic_intrhand	*sc_intr;
     52 	struct evcnt		*sc_intrevs;
     53 };
     54 
     55 
     56 int	plic_intr(void *);
     57 void	plic_enable(struct plic_softc *, u_int, u_int);
     58 void	plic_disable(struct plic_softc *, u_int, u_int);
     59 void	plic_set_priority(struct plic_softc *, u_int, uint32_t);
     60 void	plic_set_threshold(struct plic_softc *, cpuid_t, uint32_t);
     61 int	plic_attach_common(struct plic_softc *, bus_addr_t, bus_size_t);
     62 
     63 void *	plic_intr_establish_xname(u_int, int, int, int (*)(void *), void *,
     64 	    const char *);
     65 void	plic_intr_disestablish(void *);
     66 
     67 
     68 #endif /* _RISCV_PLICVAR_H */
     69