vt_early_fb.c revision 271684
1257726Sray/*- 2257726Sray * Copyright (c) 2013 The FreeBSD Foundation 3257726Sray * All rights reserved. 4257726Sray * 5257726Sray * This software was developed by Aleksandr Rybalko under sponsorship from the 6257726Sray * FreeBSD Foundation. 7257726Sray * 8257726Sray * Redistribution and use in source and binary forms, with or without 9257726Sray * modification, are permitted provided that the following conditions 10257726Sray * are met: 11257726Sray * 1. Redistributions of source code must retain the above copyright 12257726Sray * notice, this list of conditions and the following disclaimer. 13257726Sray * 2. Redistributions in binary form must reproduce the above copyright 14257726Sray * notice, this list of conditions and the following disclaimer in the 15257726Sray * documentation and/or other materials provided with the distribution. 16257726Sray * 17257726Sray * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18257726Sray * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19257726Sray * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20257726Sray * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21257726Sray * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22257726Sray * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23257726Sray * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24257726Sray * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25257726Sray * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26257726Sray * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27257726Sray * SUCH DAMAGE. 28257726Sray * 29257726Sray * $FreeBSD: head/sys/dev/vt/hw/fb/vt_early_fb.c 271684 2014-09-16 18:02:24Z dumbbell $ 30257726Sray */ 31257726Sray 32257726Sray#include <sys/cdefs.h> 33257726Sray__FBSDID("$FreeBSD: head/sys/dev/vt/hw/fb/vt_early_fb.c 271684 2014-09-16 18:02:24Z dumbbell $"); 34257726Sray 35257726Sray#include <sys/param.h> 36257726Sray#include <sys/systm.h> 37257726Sray#include <sys/kernel.h> 38257726Sray#include <sys/fbio.h> 39257726Sray 40257726Sray#include "opt_platform.h" 41257726Sray 42257726Sray#ifdef FDT 43257726Sray#include <dev/fdt/fdt_common.h> 44257726Sray#include <dev/ofw/ofw_bus.h> 45257726Sray#include <dev/ofw/ofw_bus_subr.h> 46257726Sray#include <dev/ofw/ofw_pci.h> 47264182Srpaulo#include <machine/fdt.h> 48257726Sray#endif 49257726Sray 50257726Sray#include <dev/vt/vt.h> 51257726Sray#include <dev/vt/hw/fb/vt_fb.h> 52257726Sray#include <dev/vt/colors/vt_termcolors.h> 53257726Sray 54257726Sraystatic vd_init_t vt_efb_init; 55265397Sraystatic vd_probe_t vt_efb_probe; 56257726Sray 57257726Sraystatic struct vt_driver vt_fb_early_driver = { 58265397Sray .vd_name = "efb", 59265397Sray .vd_probe = vt_efb_probe, 60257726Sray .vd_init = vt_efb_init, 61257726Sray .vd_blank = vt_fb_blank, 62270411Sdumbbell .vd_bitblt_text = vt_fb_bitblt_text, 63270431Sdumbbell .vd_bitblt_bmp = vt_fb_bitblt_bitmap, 64271684Sdumbbell .vd_drawrect = vt_fb_drawrect, 65271684Sdumbbell .vd_setpixel = vt_fb_setpixel, 66257726Sray .vd_priority = VD_PRIORITY_GENERIC, 67257726Sray}; 68257726Sray 69265397Sraystatic struct fb_info local_info; 70265397SrayVT_DRIVER_DECLARE(vt_efb, vt_fb_early_driver); 71257726Sray 72257726Sraystatic void 73257726Sray#ifdef FDT 74257726Srayvt_efb_initialize(struct fb_info *info, phandle_t node) 75257726Sray#else 76257726Srayvt_efb_initialize(struct fb_info *info) 77257726Sray#endif 78257726Sray{ 79257726Sray#ifdef FDT 80257726Sray char name[64]; 81257726Sray cell_t retval; 82257726Sray ihandle_t ih; 83257726Sray int i; 84257726Sray 85257726Sray /* Open display device, thereby initializing it */ 86257726Sray memset(name, 0, sizeof(name)); 87257726Sray OF_package_to_path(node, name, sizeof(name)); 88257726Sray ih = OF_open(name); 89257726Sray#endif 90257726Sray 91257726Sray /* 92257726Sray * Set up the color map 93257726Sray */ 94257726Sray switch (info->fb_depth) { 95257726Sray case 8: 96269783Sdumbbell vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB, 97257726Sray 0x7, 5, 0x7, 2, 0x3, 0); 98257726Sray break; 99257726Sray case 15: 100269783Sdumbbell vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB, 101257726Sray 0x1f, 10, 0x1f, 5, 0x1f, 0); 102257726Sray break; 103257726Sray case 16: 104269783Sdumbbell vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB, 105257726Sray 0x1f, 11, 0x3f, 5, 0x1f, 0); 106257726Sray break; 107257726Sray case 24: 108257726Sray case 32: 109257726Sray#if BYTE_ORDER == BIG_ENDIAN 110269783Sdumbbell vt_generate_cons_palette(info->fb_cmap, 111269783Sdumbbell COLOR_FORMAT_RGB, 255, 0, 255, 8, 255, 16); 112269783Sdumbbell#else 113269783Sdumbbell vt_generate_cons_palette(info->fb_cmap, 114257726Sray COLOR_FORMAT_RGB, 255, 16, 255, 8, 255, 0); 115257726Sray#endif 116257726Sray#ifdef FDT 117257726Sray for (i = 0; i < 16; i++) { 118257726Sray OF_call_method("color!", ih, 4, 1, 119257726Sray (cell_t)((info->fb_cmap[i] >> 16) & 0xff), 120257726Sray (cell_t)((info->fb_cmap[i] >> 8) & 0xff), 121257726Sray (cell_t)((info->fb_cmap[i] >> 0) & 0xff), 122257726Sray (cell_t)i, &retval); 123257726Sray } 124257726Sray#endif 125257726Sray break; 126257726Sray 127257726Sray default: 128257726Sray panic("Unknown color space fb_depth %d", info->fb_depth); 129257726Sray break; 130257726Sray } 131257726Sray} 132257726Sray 133265397Sraystatic phandle_t 134265397Srayvt_efb_get_fbnode() 135257726Sray{ 136257726Sray phandle_t chosen, node; 137257726Sray ihandle_t stdout; 138257726Sray char type[64]; 139257726Sray 140257726Sray chosen = OF_finddevice("/chosen"); 141257726Sray OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); 142257726Sray node = OF_instance_to_package(stdout); 143265397Sray if (node != -1) { 144265397Sray /* The "/chosen/stdout" present. */ 145265397Sray OF_getprop(node, "device_type", type, sizeof(type)); 146265397Sray /* Check if it has "display" type. */ 147265397Sray if (strcmp(type, "display") == 0) 148265397Sray return (node); 149257726Sray } 150265397Sray /* Try device with name "screen". */ 151265397Sray node = OF_finddevice("screen"); 152265397Sray 153265397Sray return (node); 154265397Sray} 155265397Sray 156265397Sraystatic int 157265397Srayvt_efb_probe(struct vt_device *vd) 158265397Sray{ 159265397Sray phandle_t node; 160265397Sray 161265397Sray node = vt_efb_get_fbnode(); 162265397Sray if (node == -1) 163257726Sray return (CN_DEAD); 164257726Sray 165265397Sray if ((OF_getproplen(node, "height") <= 0) || 166265397Sray (OF_getproplen(node, "width") <= 0) || 167265397Sray (OF_getproplen(node, "depth") <= 0) || 168265397Sray (OF_getproplen(node, "linebytes") <= 0)) 169265397Sray return (CN_DEAD); 170265397Sray 171265397Sray return (CN_INTERNAL); 172265397Sray} 173265397Sray 174265397Sraystatic int 175265397Srayvt_efb_init(struct vt_device *vd) 176265397Sray{ 177265397Sray struct ofw_pci_register pciaddrs[8]; 178265397Sray struct fb_info *info; 179265397Sray int i, len, n_pciaddrs; 180265397Sray phandle_t node; 181265397Sray 182265397Sray if (vd->vd_softc == NULL) 183265397Sray vd->vd_softc = (void *)&local_info; 184265397Sray 185265397Sray info = vd->vd_softc; 186265397Sray 187265397Sray node = vt_efb_get_fbnode(); 188265397Sray if (node == -1) 189265397Sray return (CN_DEAD); 190265397Sray 191257726Sray#define GET(name, var) \ 192257726Sray if (OF_getproplen(node, (name)) != sizeof(info->fb_##var)) \ 193257726Sray return (CN_DEAD); \ 194257726Sray OF_getencprop(node, (name), &info->fb_##var, sizeof(info->fb_##var)); \ 195257726Sray if (info->fb_##var == 0) \ 196257726Sray return (CN_DEAD); 197257726Sray 198257726Sray GET("height", height) 199257726Sray GET("width", width) 200257726Sray GET("depth", depth) 201257726Sray GET("linebytes", stride) 202257726Sray#undef GET 203257726Sray 204257726Sray info->fb_size = info->fb_height * info->fb_stride; 205257726Sray 206257726Sray /* 207257726Sray * Get the PCI addresses of the adapter, if present. The node may be the 208257726Sray * child of the PCI device: in that case, try the parent for 209257726Sray * the assigned-addresses property. 210257726Sray */ 211257726Sray len = OF_getprop(node, "assigned-addresses", pciaddrs, 212257726Sray sizeof(pciaddrs)); 213257726Sray if (len == -1) { 214257726Sray len = OF_getprop(OF_parent(node), "assigned-addresses", 215257726Sray pciaddrs, sizeof(pciaddrs)); 216257726Sray } 217257726Sray if (len == -1) 218257726Sray len = 0; 219257726Sray n_pciaddrs = len / sizeof(struct ofw_pci_register); 220257726Sray 221257726Sray /* 222257726Sray * Grab the physical address of the framebuffer, and then map it 223257726Sray * into our memory space. If the MMU is not yet up, it will be 224257726Sray * remapped for us when relocation turns on. 225257726Sray */ 226257726Sray if (OF_getproplen(node, "address") == sizeof(info->fb_pbase)) { 227257726Sray /* XXX We assume #address-cells is 1 at this point. */ 228257726Sray OF_getencprop(node, "address", &info->fb_pbase, 229257726Sray sizeof(info->fb_pbase)); 230257726Sray 231257726Sray #if defined(__powerpc__) 232257726Sray sc->sc_memt = &bs_be_tag; 233257726Sray bus_space_map(sc->sc_memt, info->fb_pbase, info->fb_size, 234257726Sray BUS_SPACE_MAP_PREFETCHABLE, &info->fb_vbase); 235257726Sray #elif defined(__sparc64__) 236257726Sray OF_decode_addr(node, 0, &space, &phys); 237257726Sray sc->sc_memt = &vt_efb_memt[0]; 238257726Sray info->addr = sparc64_fake_bustag(space, fb_phys, sc->sc_memt); 239257726Sray #else 240257726Sray bus_space_map(fdtbus_bs_tag, info->fb_pbase, info->fb_size, 241257726Sray BUS_SPACE_MAP_PREFETCHABLE, 242257726Sray (bus_space_handle_t *)&info->fb_vbase); 243257726Sray #endif 244257726Sray } else { 245257726Sray /* 246257726Sray * Some IBM systems don't have an address property. Try to 247257726Sray * guess the framebuffer region from the assigned addresses. 248257726Sray * This is ugly, but there doesn't seem to be an alternative. 249257726Sray * Linux does the same thing. 250257726Sray */ 251257726Sray 252257726Sray info->fb_pbase = n_pciaddrs; 253257726Sray for (i = 0; i < n_pciaddrs; i++) { 254257726Sray /* If it is too small, not the framebuffer */ 255257726Sray if (pciaddrs[i].size_lo < info->fb_size) 256257726Sray continue; 257257726Sray /* If it is not memory, it isn't either */ 258257726Sray if (!(pciaddrs[i].phys_hi & 259257726Sray OFW_PCI_PHYS_HI_SPACE_MEM32)) 260257726Sray continue; 261257726Sray 262257726Sray /* This could be the framebuffer */ 263257726Sray info->fb_pbase = i; 264257726Sray 265257726Sray /* If it is prefetchable, it certainly is */ 266257726Sray if (pciaddrs[i].phys_hi & OFW_PCI_PHYS_HI_PREFETCHABLE) 267257726Sray break; 268257726Sray } 269257726Sray 270257726Sray if (info->fb_pbase == n_pciaddrs) /* No candidates found */ 271257726Sray return (CN_DEAD); 272257726Sray 273257726Sray #if defined(__powerpc__) 274257726Sray OF_decode_addr(node, info->fb_pbase, &sc->sc_memt, 275257726Sray &info->fb_vbase); 276257726Sray #elif defined(__sparc64__) 277257726Sray OF_decode_addr(node, info->fb_pbase, &space, &info->fb_pbase); 278257726Sray sc->sc_memt = &vt_efb_memt[0]; 279257726Sray info->fb_vbase = sparc64_fake_bustag(space, info->fb_pbase, 280257726Sray sc->sc_memt); 281257726Sray #else 282257726Sray bus_space_map(fdtbus_bs_tag, info->fb_pbase, info->fb_size, 283257726Sray BUS_SPACE_MAP_PREFETCHABLE, 284257726Sray (bus_space_handle_t *)&info->fb_vbase); 285257726Sray #endif 286257726Sray } 287257726Sray 288257726Sray /* blank full size */ 289257726Sray len = info->fb_size / 4; 290257726Sray for (i = 0; i < len; i++) { 291257726Sray ((uint32_t *)info->fb_vbase)[i] = 0; 292257726Sray } 293257726Sray 294257726Sray /* Get pixel storage size. */ 295257726Sray info->fb_bpp = info->fb_stride / info->fb_width * 8; 296257726Sray 297257726Sray#ifdef FDT 298257726Sray vt_efb_initialize(info, node); 299257726Sray#else 300257726Sray vt_efb_initialize(info); 301257726Sray#endif 302257726Sray vt_fb_init(vd); 303257726Sray 304257726Sray return (CN_INTERNAL); 305257726Sray} 306