1 /* $OpenBSD: xics.c,v 1.4 2022/04/06 18:59:27 naddy Exp $ */ 2 /* 3 * Copyright (c) 2020 Mark Kettenis <kettenis@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <sys/param.h> 19 #include <sys/systm.h> 20 #include <sys/device.h> 21 #include <sys/evcount.h> 22 #include <sys/malloc.h> 23 #include <sys/queue.h> 24 25 #include <machine/bus.h> 26 #include <machine/fdt.h> 27 #include <machine/opal.h> 28 29 #include <dev/ofw/openfirm.h> 30 #include <dev/ofw/fdt.h> 31 32 struct xics_softc { 33 struct device sc_dev; 34 35 struct interrupt_controller sc_ic; 36 }; 37 38 int xics_match(struct device *, void *, void *); 39 void xics_attach(struct device *, struct device *, void *); 40 41 const struct cfattach xics_ca = { 42 sizeof (struct xics_softc), xics_match, xics_attach 43 }; 44 45 struct cfdriver xics_cd = { 46 NULL, "xics", DV_DULL 47 }; 48 49 void *xics_intr_establish(void *, int *, int, 50 struct cpu_info *, int (*)(void *), void *, char *); 51 void xics_intr_send_ipi(void *); 52 53 int 54 xics_match(struct device *parent, void *match, void *aux) 55 { 56 struct fdt_attach_args *faa = aux; 57 58 return OF_is_compatible(faa->fa_node, "ibm,opal-xive-vc"); 59 } 60 61 void 62 xics_attach(struct device *parent, struct device *self, void *aux) 63 { 64 struct xics_softc *sc = (struct xics_softc *)self; 65 struct fdt_attach_args *faa = aux; 66 67 printf("\n"); 68 69 sc->sc_ic.ic_node = faa->fa_node; 70 sc->sc_ic.ic_cookie = self; 71 sc->sc_ic.ic_establish = xics_intr_establish; 72 sc->sc_ic.ic_send_ipi = xics_intr_send_ipi; 73 interrupt_controller_register(&sc->sc_ic); 74 } 75 76 void * 77 xics_intr_establish(void *cookie, int *cell, int level, 78 struct cpu_info *ci, int (*func)(void *), void *arg, char *name) 79 { 80 uint32_t girq = cell[0]; 81 int type = cell[1]; 82 83 return _intr_establish(girq, type, level, ci, func, arg, name); 84 } 85 86 void 87 xics_intr_send_ipi(void *cookie) 88 { 89 return _intr_send_ipi(cookie); 90 } 91