/* $NetBSD: simplefb.c,v 1.8 2019/07/23 14:34:12 rin Exp $ */ /*- * Copyright (c) 2017 Jared McNeill * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "opt_wsdisplay_compat.h" #include __KERNEL_RCSID(0, "$NetBSD: simplefb.c,v 1.8 2019/07/23 14:34:12 rin Exp $"); #include #include #include #include #include #include static const char * const compatible[] = { "simple-framebuffer", NULL }; struct simplefb_softc { struct genfb_softc sc_gen; bus_space_tag_t sc_bst; bus_space_handle_t sc_bsh; int sc_phandle; bus_addr_t sc_paddr; }; static int simplefb_console_phandle = -1; static bool simplefb_shutdown(device_t self, int flags) { genfb_enable_polling(self); return true; } static int simplefb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, lwp_t *l) { struct simplefb_softc * const sc = v; struct wsdisplayio_bus_id *busid; struct wsdisplayio_fbinfo *fbi; struct rasops_info *ri; u_int video; int error; switch (cmd) { case WSDISPLAYIO_GTYPE: *(u_int *)data = WSDISPLAY_TYPE_GENFB; return 0; case WSDISPLAYIO_GET_BUSID: busid = data; busid->bus_type = WSDISPLAYIO_BUS_SOC; return 0; case WSDISPLAYIO_GET_FBINFO: fbi = data; ri = &sc->sc_gen.vd.active->scr_ri; error = wsdisplayio_get_fbinfo(ri, fbi); if (error == 0) { /* * XXX * if the fb isn't page aligned, tell wsfb to skip the * unaligned part */ fbi->fbi_fboffset = sc->sc_paddr & PAGE_MASK; fbi->fbi_flags |= WSFB_VRAM_IS_RAM; } return error; case WSDISPLAYIO_SVIDEO: video = *(u_int *)data; if (video == WSDISPLAYIO_VIDEO_OFF) pmf_event_inject(NULL, PMFE_DISPLAY_OFF); else if (video == WSDISPLAYIO_VIDEO_ON) pmf_event_inject(NULL, PMFE_DISPLAY_ON); else return EINVAL; return 0; default: return EPASSTHROUGH; } } static paddr_t simplefb_mmap(void *v, void *vs, off_t off, int prot) { struct simplefb_softc * const sc = v; if (off < 0 || off >= (sc->sc_paddr & PAGE_MASK) + sc->sc_gen.sc_fbsize) return -1; return bus_space_mmap(sc->sc_bst, trunc_page(sc->sc_paddr), off, prot, BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); } static int simplefb_attach_genfb(struct simplefb_softc *sc) { device_t dev = sc->sc_gen.sc_dev; prop_dictionary_t dict = device_properties(dev); const int phandle = sc->sc_phandle; struct genfb_ops ops; uint32_t width, height, stride; uint16_t depth; const char *format; bus_addr_t addr; bus_size_t size; if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { aprint_error(": couldn't get registers\n"); return ENXIO; } if (size == 0) { aprint_naive("\n"); aprint_normal(": disabled\n"); return ENXIO; } if (of_getprop_uint32(phandle, "width", &width) != 0 || of_getprop_uint32(phandle, "height", &height) != 0 || of_getprop_uint32(phandle, "stride", &stride) != 0 || (format = fdtbus_get_string(phandle, "format")) == NULL) { aprint_error(": missing property in DT\n"); return ENXIO; } if (strcmp(format, "a8b8g8r8") == 0 || strcmp(format, "x8r8g8b8") == 0) { depth = 32; } else if (strcmp(format, "r5g6b5") == 0) { depth = 16; } else { aprint_error(": unsupported format '%s'\n", format); return ENXIO; } if (bus_space_map(sc->sc_bst, addr, size, BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_bsh) != 0) { aprint_error(": failed to map fb\n"); return ENXIO; } sc->sc_paddr = addr; prop_dictionary_set_uint32(dict, "width", width); prop_dictionary_set_uint32(dict, "height", height); prop_dictionary_set_uint8(dict, "depth", depth); prop_dictionary_set_uint16(dict, "linebytes", stride); prop_dictionary_set_uint32(dict, "address", addr); prop_dictionary_set_uint64(dict, "virtual_address", (uintptr_t)bus_space_vaddr(sc->sc_bst, sc->sc_bsh)); genfb_init(&sc->sc_gen); if (sc->sc_gen.sc_width == 0 || sc->sc_gen.sc_fbsize == 0) { aprint_normal(": disabled\n"); return ENXIO; } aprint_naive("\n"); aprint_normal(": Simple Framebuffer (%ux%u %u-bpp @ 0x%" PRIxBUSADDR ")\n", width, height, depth, addr); pmf_device_register1(dev, NULL, NULL, simplefb_shutdown); memset(&ops, 0, sizeof(ops)); ops.genfb_ioctl = simplefb_ioctl; ops.genfb_mmap = simplefb_mmap; #ifdef WSDISPLAY_MULTICONS const bool is_console = true; genfb_cnattach(); #else const bool is_console = phandle == simplefb_console_phandle; if (is_console) aprint_normal_dev(sc->sc_gen.sc_dev, "switching to framebuffer console\n"); #endif prop_dictionary_set_bool(dict, "is_console", is_console); genfb_attach(&sc->sc_gen, &ops); return 0; } static int simplefb_match(device_t parent, cfdata_t cf, void *aux) { struct fdt_attach_args * const faa = aux; return of_match_compatible(faa->faa_phandle, compatible); } static void simplefb_attach(device_t parent, device_t self, void *aux) { struct simplefb_softc * const sc = device_private(self); struct fdt_attach_args * const faa = aux; const int phandle = faa->faa_phandle; sc->sc_gen.sc_dev = self; sc->sc_phandle = phandle; sc->sc_bst = faa->faa_bst; if (simplefb_attach_genfb(sc) != 0) return; } CFATTACH_DECL_NEW(simplefb, sizeof(struct simplefb_softc), simplefb_match, simplefb_attach, NULL, NULL); static int simplefb_console_match(int phandle) { return of_match_compatible(phandle, compatible); } static void simplefb_console_consinit(struct fdt_attach_args *faa, u_int uart_freq) { simplefb_console_phandle = faa->faa_phandle; genfb_cnattach(); } static const struct fdt_console simplefb_fdt_console = { .match = simplefb_console_match, .consinit = simplefb_console_consinit }; FDT_CONSOLE(simplefb, &simplefb_fdt_console);