1 /* $OpenBSD: ccp_acpi.c,v 1.1 2019/04/23 18:34:06 kettenis Exp $ */ 2 /* 3 * Copyright (c) 2019 Mark Kettenis 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 21 #include <dev/acpi/acpireg.h> 22 #include <dev/acpi/acpivar.h> 23 #include <dev/acpi/acpidev.h> 24 #include <dev/acpi/amltypes.h> 25 #include <dev/acpi/dsdt.h> 26 27 #include <dev/ic/ccpvar.h> 28 29 struct ccp_acpi_softc { 30 struct ccp_softc sc; 31 struct acpi_softc *sc_acpi; 32 struct aml_node *sc_node; 33 34 bus_addr_t sc_addr; 35 bus_size_t sc_size; 36 }; 37 38 int ccp_acpi_match(struct device *, void *, void *); 39 void ccp_acpi_attach(struct device *, struct device *, void *); 40 41 struct cfattach ccp_acpi_ca = { 42 sizeof(struct ccp_acpi_softc), ccp_acpi_match, ccp_acpi_attach 43 }; 44 45 const char *ccp_hids[] = { 46 "AMDI0C00", 47 NULL 48 }; 49 50 int ccp_acpi_parse_resources(int, union acpi_resource *, void *); 51 52 int 53 ccp_acpi_match(struct device *parent, void *match, void *aux) 54 { 55 struct acpi_attach_args *aaa = aux; 56 struct cfdata *cf = match; 57 58 return acpi_matchhids(aaa, ccp_hids, cf->cf_driver->cd_name); 59 } 60 61 void 62 ccp_acpi_attach(struct device *parent, struct device *self, void *aux) 63 { 64 struct acpi_attach_args *aaa = aux; 65 struct ccp_acpi_softc *sc = (struct ccp_acpi_softc *)self; 66 struct aml_value res; 67 68 sc->sc_acpi = (struct acpi_softc *)parent; 69 sc->sc_node = aaa->aaa_node; 70 printf(" %s", sc->sc_node->name); 71 72 if (aml_evalname(sc->sc_acpi, sc->sc_node, "_CRS", 0, NULL, &res)) { 73 printf(": can't find registers\n"); 74 return; 75 } 76 77 aml_parse_resource(&res, ccp_acpi_parse_resources, sc); 78 printf(" addr 0x%lx/0x%lx", sc->sc_addr, sc->sc_size); 79 if (sc->sc_addr == 0 || sc->sc_size == 0) { 80 printf("\n"); 81 return; 82 } 83 84 sc->sc.sc_iot = aaa->aaa_memt; 85 if (bus_space_map(sc->sc.sc_iot, sc->sc_addr, sc->sc_size, 0, 86 &sc->sc.sc_ioh)) { 87 printf(": can't map registers\n"); 88 return; 89 } 90 91 ccp_attach(&sc->sc); 92 } 93 94 int 95 ccp_acpi_parse_resources(int crsidx, union acpi_resource *crs, void *arg) 96 { 97 struct ccp_acpi_softc *sc = arg; 98 int type = AML_CRSTYPE(crs); 99 100 switch (type) { 101 case LR_MEM32FIXED: 102 sc->sc_addr = crs->lr_m32fixed._bas; 103 sc->sc_size = crs->lr_m32fixed._len; 104 break; 105 } 106 107 return 0; 108 } 109