bcm2835_genfb.c revision 1.3.2.2
1 1.3.2.2 yamt /* $NetBSD: bcm2835_genfb.c,v 1.3.2.2 2013/01/23 00:05:41 yamt Exp $ */ 2 1.3.2.2 yamt 3 1.3.2.2 yamt /*- 4 1.3.2.2 yamt * Copyright (c) 2013 Jared D. McNeill <jmcneill (at) invisible.ca> 5 1.3.2.2 yamt * All rights reserved. 6 1.3.2.2 yamt * 7 1.3.2.2 yamt * Redistribution and use in source and binary forms, with or without 8 1.3.2.2 yamt * modification, are permitted provided that the following conditions 9 1.3.2.2 yamt * are met: 10 1.3.2.2 yamt * 1. Redistributions of source code must retain the above copyright 11 1.3.2.2 yamt * notice, this list of conditions and the following disclaimer. 12 1.3.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 13 1.3.2.2 yamt * notice, this list of conditions and the following disclaimer in the 14 1.3.2.2 yamt * documentation and/or other materials provided with the distribution. 15 1.3.2.2 yamt * 16 1.3.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 1.3.2.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 1.3.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 1.3.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 1.3.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 1.3.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 1.3.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 1.3.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 1.3.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 1.3.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.3.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 27 1.3.2.2 yamt */ 28 1.3.2.2 yamt 29 1.3.2.2 yamt /* 30 1.3.2.2 yamt * Generic framebuffer console driver 31 1.3.2.2 yamt */ 32 1.3.2.2 yamt 33 1.3.2.2 yamt #include <sys/cdefs.h> 34 1.3.2.2 yamt __KERNEL_RCSID(0, "$NetBSD: bcm2835_genfb.c,v 1.3.2.2 2013/01/23 00:05:41 yamt Exp $"); 35 1.3.2.2 yamt 36 1.3.2.2 yamt #include <sys/param.h> 37 1.3.2.2 yamt #include <sys/types.h> 38 1.3.2.2 yamt #include <sys/systm.h> 39 1.3.2.2 yamt #include <sys/device.h> 40 1.3.2.2 yamt #include <sys/conf.h> 41 1.3.2.2 yamt #include <sys/bus.h> 42 1.3.2.2 yamt #include <sys/kmem.h> 43 1.3.2.2 yamt 44 1.3.2.2 yamt #include <arm/broadcom/bcm_amba.h> 45 1.3.2.2 yamt 46 1.3.2.2 yamt #include <dev/wsfb/genfbvar.h> 47 1.3.2.2 yamt 48 1.3.2.2 yamt struct bcmgenfb_softc { 49 1.3.2.2 yamt struct genfb_softc sc_gen; 50 1.3.2.2 yamt bus_space_tag_t sc_iot; 51 1.3.2.2 yamt bus_space_handle_t sc_ioh; 52 1.3.2.2 yamt 53 1.3.2.2 yamt uint32_t sc_wstype; 54 1.3.2.2 yamt }; 55 1.3.2.2 yamt 56 1.3.2.2 yamt static int bcmgenfb_match(device_t, cfdata_t, void *); 57 1.3.2.2 yamt static void bcmgenfb_attach(device_t, device_t, void *); 58 1.3.2.2 yamt 59 1.3.2.2 yamt static int bcmgenfb_ioctl(void *, void *, u_long, void *, int, lwp_t *); 60 1.3.2.2 yamt static paddr_t bcmgenfb_mmap(void *, void *, off_t, int); 61 1.3.2.2 yamt 62 1.3.2.2 yamt CFATTACH_DECL_NEW(bcmgenfb, sizeof(struct bcmgenfb_softc), 63 1.3.2.2 yamt bcmgenfb_match, bcmgenfb_attach, NULL, NULL); 64 1.3.2.2 yamt 65 1.3.2.2 yamt static int 66 1.3.2.2 yamt bcmgenfb_match(device_t parent, cfdata_t match, void *aux) 67 1.3.2.2 yamt { 68 1.3.2.2 yamt struct amba_attach_args *aaa = aux; 69 1.3.2.2 yamt 70 1.3.2.2 yamt return !strcmp(aaa->aaa_name, "fb"); 71 1.3.2.2 yamt } 72 1.3.2.2 yamt 73 1.3.2.2 yamt static void 74 1.3.2.2 yamt bcmgenfb_attach(device_t parent, device_t self, void *aux) 75 1.3.2.2 yamt { 76 1.3.2.2 yamt struct bcmgenfb_softc *sc = device_private(self); 77 1.3.2.2 yamt struct amba_attach_args *aaa = aux; 78 1.3.2.2 yamt prop_dictionary_t dict = device_properties(self); 79 1.3.2.2 yamt struct genfb_ops ops; 80 1.3.2.2 yamt bool is_console = false; 81 1.3.2.2 yamt int error; 82 1.3.2.2 yamt 83 1.3.2.2 yamt sc->sc_gen.sc_dev = self; 84 1.3.2.2 yamt sc->sc_iot = aaa->aaa_iot; 85 1.3.2.2 yamt 86 1.3.2.2 yamt sc->sc_wstype = WSDISPLAY_TYPE_VC4; 87 1.3.2.2 yamt prop_dictionary_get_uint32(dict, "wsdisplay_type", &sc->sc_wstype); 88 1.3.2.2 yamt prop_dictionary_get_bool(dict, "is_console", &is_console); 89 1.3.2.2 yamt 90 1.3.2.2 yamt genfb_init(&sc->sc_gen); 91 1.3.2.2 yamt 92 1.3.2.2 yamt if (sc->sc_gen.sc_width == 0 || 93 1.3.2.2 yamt sc->sc_gen.sc_fbsize == 0) { 94 1.3.2.2 yamt aprint_normal(": disabled\n"); 95 1.3.2.2 yamt return; 96 1.3.2.2 yamt } 97 1.3.2.2 yamt 98 1.3.2.2 yamt error = bus_space_map(sc->sc_iot, sc->sc_gen.sc_fboffset, 99 1.3.2.2 yamt sc->sc_gen.sc_fbsize, 100 1.3.2.2 yamt BUS_SPACE_MAP_LINEAR|BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_ioh); 101 1.3.2.2 yamt if (error) { 102 1.3.2.2 yamt aprint_error_dev(self, "couldn't map framebuffer (%d)\n", 103 1.3.2.2 yamt error); 104 1.3.2.2 yamt return; 105 1.3.2.2 yamt } 106 1.3.2.2 yamt sc->sc_gen.sc_fbaddr = bus_space_vaddr(sc->sc_iot, sc->sc_ioh); 107 1.3.2.2 yamt 108 1.3.2.2 yamt memset(&ops, 0, sizeof(ops)); 109 1.3.2.2 yamt ops.genfb_ioctl = bcmgenfb_ioctl; 110 1.3.2.2 yamt ops.genfb_mmap = bcmgenfb_mmap; 111 1.3.2.2 yamt 112 1.3.2.2 yamt aprint_naive("\n"); 113 1.3.2.2 yamt 114 1.3.2.2 yamt if (is_console) 115 1.3.2.2 yamt aprint_normal(": switching to framebuffer console\n"); 116 1.3.2.2 yamt else 117 1.3.2.2 yamt aprint_normal("\n"); 118 1.3.2.2 yamt 119 1.3.2.2 yamt genfb_attach(&sc->sc_gen, &ops); 120 1.3.2.2 yamt } 121 1.3.2.2 yamt 122 1.3.2.2 yamt static int 123 1.3.2.2 yamt bcmgenfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, lwp_t *l) 124 1.3.2.2 yamt { 125 1.3.2.2 yamt struct bcmgenfb_softc *sc = v; 126 1.3.2.2 yamt struct wsdisplayio_bus_id *busid; 127 1.3.2.2 yamt 128 1.3.2.2 yamt switch (cmd) { 129 1.3.2.2 yamt case WSDISPLAYIO_GTYPE: 130 1.3.2.2 yamt *(u_int *)data = sc->sc_wstype; 131 1.3.2.2 yamt return 0; 132 1.3.2.2 yamt case WSDISPLAYIO_GET_BUSID: 133 1.3.2.2 yamt busid = data; 134 1.3.2.2 yamt busid->bus_type = WSDISPLAYIO_BUS_SOC; 135 1.3.2.2 yamt return 0; 136 1.3.2.2 yamt default: 137 1.3.2.2 yamt return EPASSTHROUGH; 138 1.3.2.2 yamt } 139 1.3.2.2 yamt } 140 1.3.2.2 yamt 141 1.3.2.2 yamt static paddr_t 142 1.3.2.2 yamt bcmgenfb_mmap(void *v, void *vs, off_t offset, int prot) 143 1.3.2.2 yamt { 144 1.3.2.2 yamt struct bcmgenfb_softc *sc = v; 145 1.3.2.2 yamt 146 1.3.2.2 yamt if (offset < 0 || offset >= sc->sc_gen.sc_fbsize) 147 1.3.2.2 yamt return -1; 148 1.3.2.2 yamt 149 1.3.2.2 yamt return bus_space_mmap(sc->sc_iot, sc->sc_gen.sc_fboffset, offset, 150 1.3.2.2 yamt prot, BUS_SPACE_MAP_LINEAR|BUS_SPACE_MAP_PREFETCHABLE); 151 1.3.2.2 yamt } 152
Indexes created Sat Oct 18 17:09:52 GMT 2025