simplefb.c revision 1.2.2.2
1 1.2.2.2 jdolecek /* $NetBSD: simplefb.c,v 1.2.2.2 2017/12/03 11:37:01 jdolecek Exp $ */ 2 1.2.2.2 jdolecek 3 1.2.2.2 jdolecek /*- 4 1.2.2.2 jdolecek * Copyright (c) 2017 Jared McNeill <jmcneill (at) invisible.ca> 5 1.2.2.2 jdolecek * All rights reserved. 6 1.2.2.2 jdolecek * 7 1.2.2.2 jdolecek * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 jdolecek * modification, are permitted provided that the following conditions 9 1.2.2.2 jdolecek * are met: 10 1.2.2.2 jdolecek * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 jdolecek * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 jdolecek * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 jdolecek * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 jdolecek * documentation and/or other materials provided with the distribution. 15 1.2.2.2 jdolecek * 16 1.2.2.2 jdolecek * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.2.2.2 jdolecek * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.2.2.2 jdolecek * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.2.2.2 jdolecek * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.2.2.2 jdolecek * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.2.2.2 jdolecek * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.2.2.2 jdolecek * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.2.2.2 jdolecek * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.2.2.2 jdolecek * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.2.2.2 jdolecek * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.2.2.2 jdolecek * SUCH DAMAGE. 27 1.2.2.2 jdolecek */ 28 1.2.2.2 jdolecek 29 1.2.2.2 jdolecek #include <sys/cdefs.h> 30 1.2.2.2 jdolecek __KERNEL_RCSID(0, "$NetBSD: simplefb.c,v 1.2.2.2 2017/12/03 11:37:01 jdolecek Exp $"); 31 1.2.2.2 jdolecek 32 1.2.2.2 jdolecek #include <sys/param.h> 33 1.2.2.2 jdolecek #include <sys/bus.h> 34 1.2.2.2 jdolecek #include <sys/device.h> 35 1.2.2.2 jdolecek #include <sys/systm.h> 36 1.2.2.2 jdolecek 37 1.2.2.2 jdolecek #include <dev/fdt/fdtvar.h> 38 1.2.2.2 jdolecek 39 1.2.2.2 jdolecek #include <dev/wsfb/genfbvar.h> 40 1.2.2.2 jdolecek 41 1.2.2.2 jdolecek static const char * const compatible[] = { 42 1.2.2.2 jdolecek "simple-framebuffer", 43 1.2.2.2 jdolecek NULL 44 1.2.2.2 jdolecek }; 45 1.2.2.2 jdolecek 46 1.2.2.2 jdolecek struct simplefb_softc { 47 1.2.2.2 jdolecek struct genfb_softc sc_gen; 48 1.2.2.2 jdolecek bus_space_tag_t sc_bst; 49 1.2.2.2 jdolecek bus_space_handle_t sc_bsh; 50 1.2.2.2 jdolecek int sc_phandle; 51 1.2.2.2 jdolecek 52 1.2.2.2 jdolecek bus_addr_t sc_paddr; 53 1.2.2.2 jdolecek }; 54 1.2.2.2 jdolecek 55 1.2.2.2 jdolecek static int simplefb_console_phandle = -1; 56 1.2.2.2 jdolecek 57 1.2.2.2 jdolecek static bool 58 1.2.2.2 jdolecek simplefb_shutdown(device_t self, int flags) 59 1.2.2.2 jdolecek { 60 1.2.2.2 jdolecek genfb_enable_polling(self); 61 1.2.2.2 jdolecek return true; 62 1.2.2.2 jdolecek } 63 1.2.2.2 jdolecek 64 1.2.2.2 jdolecek static int 65 1.2.2.2 jdolecek simplefb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, lwp_t *l) 66 1.2.2.2 jdolecek { 67 1.2.2.2 jdolecek struct simplefb_softc * const sc = v; 68 1.2.2.2 jdolecek struct wsdisplayio_bus_id *busid; 69 1.2.2.2 jdolecek struct wsdisplayio_fbinfo *fbi; 70 1.2.2.2 jdolecek struct rasops_info *ri; 71 1.2.2.2 jdolecek int error; 72 1.2.2.2 jdolecek 73 1.2.2.2 jdolecek switch (cmd) { 74 1.2.2.2 jdolecek case WSDISPLAYIO_GTYPE: 75 1.2.2.2 jdolecek *(u_int *)data = WSDISPLAY_TYPE_GENFB; 76 1.2.2.2 jdolecek return 0; 77 1.2.2.2 jdolecek case WSDISPLAYIO_GET_BUSID: 78 1.2.2.2 jdolecek busid = data; 79 1.2.2.2 jdolecek busid->bus_type = WSDISPLAYIO_BUS_SOC; 80 1.2.2.2 jdolecek return 0; 81 1.2.2.2 jdolecek case WSDISPLAYIO_GET_FBINFO: 82 1.2.2.2 jdolecek fbi = data; 83 1.2.2.2 jdolecek ri = &sc->sc_gen.vd.active->scr_ri; 84 1.2.2.2 jdolecek error = wsdisplayio_get_fbinfo(ri, fbi); 85 1.2.2.2 jdolecek if (error == 0) 86 1.2.2.2 jdolecek fbi->fbi_flags |= WSFB_VRAM_IS_RAM; 87 1.2.2.2 jdolecek return error; 88 1.2.2.2 jdolecek default: 89 1.2.2.2 jdolecek return EPASSTHROUGH; 90 1.2.2.2 jdolecek } 91 1.2.2.2 jdolecek } 92 1.2.2.2 jdolecek 93 1.2.2.2 jdolecek static paddr_t 94 1.2.2.2 jdolecek simplefb_mmap(void *v, void *vs, off_t off, int prot) 95 1.2.2.2 jdolecek { 96 1.2.2.2 jdolecek struct simplefb_softc * const sc = v; 97 1.2.2.2 jdolecek 98 1.2.2.2 jdolecek if (off < 0 || off >= sc->sc_gen.sc_fbsize) 99 1.2.2.2 jdolecek return -1; 100 1.2.2.2 jdolecek 101 1.2.2.2 jdolecek return bus_space_mmap(sc->sc_bst, sc->sc_paddr, off, prot, 102 1.2.2.2 jdolecek BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); 103 1.2.2.2 jdolecek } 104 1.2.2.2 jdolecek 105 1.2.2.2 jdolecek static int 106 1.2.2.2 jdolecek simplefb_attach_genfb(struct simplefb_softc *sc) 107 1.2.2.2 jdolecek { 108 1.2.2.2 jdolecek device_t dev = sc->sc_gen.sc_dev; 109 1.2.2.2 jdolecek prop_dictionary_t dict = device_properties(dev); 110 1.2.2.2 jdolecek const int phandle = sc->sc_phandle; 111 1.2.2.2 jdolecek struct genfb_ops ops; 112 1.2.2.2 jdolecek uint32_t width, height, stride; 113 1.2.2.2 jdolecek uint16_t depth; 114 1.2.2.2 jdolecek const char *format; 115 1.2.2.2 jdolecek bus_addr_t addr; 116 1.2.2.2 jdolecek bus_size_t size; 117 1.2.2.2 jdolecek 118 1.2.2.2 jdolecek if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 119 1.2.2.2 jdolecek aprint_error(": couldn't get registers\n"); 120 1.2.2.2 jdolecek return ENXIO; 121 1.2.2.2 jdolecek } 122 1.2.2.2 jdolecek 123 1.2.2.2 jdolecek if (size == 0) { 124 1.2.2.2 jdolecek aprint_naive("\n"); 125 1.2.2.2 jdolecek aprint_normal(": disabled\n"); 126 1.2.2.2 jdolecek return ENXIO; 127 1.2.2.2 jdolecek } 128 1.2.2.2 jdolecek 129 1.2.2.2 jdolecek if (of_getprop_uint32(phandle, "width", &width) != 0 || 130 1.2.2.2 jdolecek of_getprop_uint32(phandle, "height", &height) != 0 || 131 1.2.2.2 jdolecek of_getprop_uint32(phandle, "stride", &stride) != 0 || 132 1.2.2.2 jdolecek (format = fdtbus_get_string(phandle, "format")) == NULL) { 133 1.2.2.2 jdolecek aprint_error(": missing property in DT\n"); 134 1.2.2.2 jdolecek return ENXIO; 135 1.2.2.2 jdolecek } 136 1.2.2.2 jdolecek 137 1.2.2.2 jdolecek if (strcmp(format, "a8b8g8r8") == 0 || 138 1.2.2.2 jdolecek strcmp(format, "x8r8g8b8") == 0) { 139 1.2.2.2 jdolecek depth = 32; 140 1.2.2.2 jdolecek } else if (strcmp(format, "r5g6b5") == 0) { 141 1.2.2.2 jdolecek depth = 16; 142 1.2.2.2 jdolecek } else { 143 1.2.2.2 jdolecek aprint_error(": unsupported format '%s'\n", format); 144 1.2.2.2 jdolecek return ENXIO; 145 1.2.2.2 jdolecek } 146 1.2.2.2 jdolecek 147 1.2.2.2 jdolecek if (bus_space_map(sc->sc_bst, addr, size, BUS_SPACE_MAP_LINEAR, 148 1.2.2.2 jdolecek &sc->sc_bsh) != 0) { 149 1.2.2.2 jdolecek aprint_error(": failed to map fb\n"); 150 1.2.2.2 jdolecek return ENXIO; 151 1.2.2.2 jdolecek } 152 1.2.2.2 jdolecek 153 1.2.2.2 jdolecek sc->sc_paddr = addr; 154 1.2.2.2 jdolecek 155 1.2.2.2 jdolecek prop_dictionary_set_uint32(dict, "width", width); 156 1.2.2.2 jdolecek prop_dictionary_set_uint32(dict, "height", height); 157 1.2.2.2 jdolecek prop_dictionary_set_uint8(dict, "depth", depth); 158 1.2.2.2 jdolecek prop_dictionary_set_uint16(dict, "linebytes", stride); 159 1.2.2.2 jdolecek prop_dictionary_set_uint32(dict, "address", addr); 160 1.2.2.2 jdolecek prop_dictionary_set_uint32(dict, "virtual_address", 161 1.2.2.2 jdolecek (uintptr_t)bus_space_vaddr(sc->sc_bst, sc->sc_bsh)); 162 1.2.2.2 jdolecek 163 1.2.2.2 jdolecek genfb_init(&sc->sc_gen); 164 1.2.2.2 jdolecek 165 1.2.2.2 jdolecek if (sc->sc_gen.sc_width == 0 || sc->sc_gen.sc_fbsize == 0) { 166 1.2.2.2 jdolecek aprint_normal(": disabled\n"); 167 1.2.2.2 jdolecek return ENXIO; 168 1.2.2.2 jdolecek } 169 1.2.2.2 jdolecek 170 1.2.2.2 jdolecek aprint_naive("\n"); 171 1.2.2.2 jdolecek aprint_normal(": Simple Framebuffer (%ux%u %u-bpp @ 0x%" PRIxBUSADDR ")\n", 172 1.2.2.2 jdolecek width, height, depth, addr); 173 1.2.2.2 jdolecek 174 1.2.2.2 jdolecek pmf_device_register1(dev, NULL, NULL, simplefb_shutdown); 175 1.2.2.2 jdolecek 176 1.2.2.2 jdolecek memset(&ops, 0, sizeof(ops)); 177 1.2.2.2 jdolecek ops.genfb_ioctl = simplefb_ioctl; 178 1.2.2.2 jdolecek ops.genfb_mmap = simplefb_mmap; 179 1.2.2.2 jdolecek 180 1.2.2.2 jdolecek const bool is_console = phandle == simplefb_console_phandle; 181 1.2.2.2 jdolecek 182 1.2.2.2 jdolecek prop_dictionary_set_bool(dict, "is_console", is_console); 183 1.2.2.2 jdolecek 184 1.2.2.2 jdolecek if (is_console) 185 1.2.2.2 jdolecek aprint_normal_dev(sc->sc_gen.sc_dev, 186 1.2.2.2 jdolecek "switching to framebuffer console\n"); 187 1.2.2.2 jdolecek 188 1.2.2.2 jdolecek genfb_attach(&sc->sc_gen, &ops); 189 1.2.2.2 jdolecek 190 1.2.2.2 jdolecek return 0; 191 1.2.2.2 jdolecek } 192 1.2.2.2 jdolecek 193 1.2.2.2 jdolecek static int 194 1.2.2.2 jdolecek simplefb_match(device_t parent, cfdata_t cf, void *aux) 195 1.2.2.2 jdolecek { 196 1.2.2.2 jdolecek struct fdt_attach_args * const faa = aux; 197 1.2.2.2 jdolecek 198 1.2.2.2 jdolecek return of_match_compatible(faa->faa_phandle, compatible); 199 1.2.2.2 jdolecek } 200 1.2.2.2 jdolecek 201 1.2.2.2 jdolecek static void 202 1.2.2.2 jdolecek simplefb_attach(device_t parent, device_t self, void *aux) 203 1.2.2.2 jdolecek { 204 1.2.2.2 jdolecek struct simplefb_softc * const sc = device_private(self); 205 1.2.2.2 jdolecek struct fdt_attach_args * const faa = aux; 206 1.2.2.2 jdolecek const int phandle = faa->faa_phandle; 207 1.2.2.2 jdolecek 208 1.2.2.2 jdolecek sc->sc_gen.sc_dev = self; 209 1.2.2.2 jdolecek sc->sc_phandle = phandle; 210 1.2.2.2 jdolecek sc->sc_bst = faa->faa_bst; 211 1.2.2.2 jdolecek 212 1.2.2.2 jdolecek if (simplefb_attach_genfb(sc) != 0) 213 1.2.2.2 jdolecek return; 214 1.2.2.2 jdolecek } 215 1.2.2.2 jdolecek 216 1.2.2.2 jdolecek CFATTACH_DECL_NEW(simplefb, sizeof(struct simplefb_softc), 217 1.2.2.2 jdolecek simplefb_match, simplefb_attach, NULL, NULL); 218 1.2.2.2 jdolecek 219 1.2.2.2 jdolecek static int 220 1.2.2.2 jdolecek simplefb_console_match(int phandle) 221 1.2.2.2 jdolecek { 222 1.2.2.2 jdolecek return of_match_compatible(phandle, compatible); 223 1.2.2.2 jdolecek } 224 1.2.2.2 jdolecek 225 1.2.2.2 jdolecek static void 226 1.2.2.2 jdolecek simplefb_console_consinit(struct fdt_attach_args *faa, u_int uart_freq) 227 1.2.2.2 jdolecek { 228 1.2.2.2 jdolecek simplefb_console_phandle = faa->faa_phandle; 229 1.2.2.2 jdolecek genfb_cnattach(); 230 1.2.2.2 jdolecek } 231 1.2.2.2 jdolecek 232 1.2.2.2 jdolecek static const struct fdt_console simplefb_fdt_console = { 233 1.2.2.2 jdolecek .match = simplefb_console_match, 234 1.2.2.2 jdolecek .consinit = simplefb_console_consinit 235 1.2.2.2 jdolecek }; 236 1.2.2.2 jdolecek 237 1.2.2.2 jdolecek FDT_CONSOLE(simplefb, &simplefb_fdt_console); 238
Indexes created Wed Oct 01 19:09:53 GMT 2025