1 /* $NetBSD: sunxi_fb.c,v 1.3 2019/01/30 10:55:44 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2015-2019 Jared McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "opt_wsdisplay_compat.h" 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: sunxi_fb.c,v 1.3 2019/01/30 10:55:44 jmcneill Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/device.h> 37 38 #include <dev/fdt/fdtvar.h> 39 40 #include <drm/drmP.h> 41 #include <drm/drmfb.h> 42 43 #include <arm/sunxi/sunxi_drm.h> 44 45 static int sunxi_fb_match(device_t, cfdata_t, void *); 46 static void sunxi_fb_attach(device_t, device_t, void *); 47 48 static bool sunxi_fb_shutdown(device_t, int); 49 50 struct sunxi_fb_softc { 51 struct drmfb_softc sc_drmfb; 52 device_t sc_dev; 53 struct sunxi_drm_softc *sc_drm; 54 struct sunxi_drm_framebuffer *sc_fb; 55 struct sunxi_drmfb_attach_args sc_sfa; 56 }; 57 58 static paddr_t sunxi_fb_mmapfb(struct drmfb_softc *, off_t, int); 59 static int sunxi_fb_ioctl(struct drmfb_softc *, u_long, void *, int, 60 lwp_t *); 61 62 static const struct drmfb_params sunxifb_drmfb_params = { 63 .dp_mmapfb = sunxi_fb_mmapfb, 64 .dp_ioctl = sunxi_fb_ioctl, 65 66 }; 67 68 CFATTACH_DECL_NEW(sunxi_fb, sizeof(struct sunxi_fb_softc), 69 sunxi_fb_match, sunxi_fb_attach, NULL, NULL); 70 71 static int 72 sunxi_fb_match(device_t parent, cfdata_t cf, void *aux) 73 { 74 return 1; 75 } 76 77 static void 78 sunxi_fb_attach(device_t parent, device_t self, void *aux) 79 { 80 struct sunxi_fb_softc * const sc = device_private(self); 81 struct sunxi_drm_softc * const drmsc = device_private(parent); 82 struct sunxi_drmfb_attach_args * const sfa = aux; 83 int error; 84 85 sc->sc_dev = self; 86 sc->sc_drm = drmsc; 87 sc->sc_sfa = *sfa; 88 sc->sc_fb = to_sunxi_drm_framebuffer(sfa->sfa_fb_helper->fb); 89 90 aprint_naive("\n"); 91 aprint_normal("\n"); 92 93 #ifdef WSDISPLAY_MULTICONS 94 prop_dictionary_t dict = device_properties(self); 95 const bool is_console = true; 96 prop_dictionary_set_bool(dict, "is_console", is_console); 97 #endif 98 99 const struct drmfb_attach_args da = { 100 .da_dev = self, 101 .da_fb_helper = sfa->sfa_fb_helper, 102 .da_fb_sizes = &sfa->sfa_fb_sizes, 103 .da_fb_vaddr = sc->sc_fb->obj->vaddr, 104 .da_fb_linebytes = sfa->sfa_fb_linebytes, 105 .da_params = &sunxifb_drmfb_params, 106 }; 107 108 error = drmfb_attach(&sc->sc_drmfb, &da); 109 if (error) { 110 aprint_error_dev(self, "failed to attach drmfb: %d\n", error); 111 return; 112 } 113 114 pmf_device_register1(self, NULL, NULL, sunxi_fb_shutdown); 115 } 116 117 static bool 118 sunxi_fb_shutdown(device_t self, int flags) 119 { 120 struct sunxi_fb_softc * const sc = device_private(self); 121 122 return drmfb_shutdown(&sc->sc_drmfb, flags); 123 } 124 125 static paddr_t 126 sunxi_fb_mmapfb(struct drmfb_softc *sc, off_t off, int prot) 127 { 128 struct sunxi_fb_softc * const tfb_sc = (struct sunxi_fb_softc *)sc; 129 struct drm_gem_cma_object *obj = tfb_sc->sc_fb->obj; 130 131 KASSERT(off >= 0); 132 KASSERT(off < obj->dmasize); 133 134 return bus_dmamem_mmap(obj->dmat, obj->dmasegs, 1, off, prot, 135 BUS_DMA_PREFETCHABLE); 136 } 137 138 static int 139 sunxi_fb_ioctl(struct drmfb_softc *sc, u_long cmd, void *data, int flag, 140 lwp_t *l) 141 { 142 struct wsdisplayio_bus_id *busid; 143 struct wsdisplayio_fbinfo *fbi; 144 struct rasops_info *ri = &sc->sc_genfb.vd.active->scr_ri; 145 int error; 146 147 switch (cmd) { 148 case WSDISPLAYIO_GET_BUSID: 149 busid = data; 150 busid->bus_type = WSDISPLAYIO_BUS_SOC; 151 return 0; 152 case WSDISPLAYIO_GTYPE: 153 *(u_int *)data = WSDISPLAY_TYPE_GENFB; 154 return 0; 155 case WSDISPLAYIO_GET_FBINFO: 156 fbi = data; 157 error = wsdisplayio_get_fbinfo(ri, fbi); 158 fbi->fbi_flags |= WSFB_VRAM_IS_RAM; 159 return error; 160 default: 161 return EPASSTHROUGH; 162 } 163 } 164