1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2014 The FreeBSD Foundation 5 * 6 * This software was developed by Aleksandr Rybalko under sponsorship from the 7 * FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/fbio.h> 35 #include <sys/linker.h> 36 37 #include "opt_platform.h" 38 39 #include <machine/metadata.h> 40 #include <machine/vmparam.h> 41 #include <vm/vm.h> 42 #include <vm/pmap.h> 43 44 #include <dev/vt/vt.h> 45 #include <dev/vt/hw/fb/vt_fb.h> 46 #include <dev/vt/colors/vt_termcolors.h> 47 48 static vd_init_t vt_vbefb_init; 49 static vd_fini_t vt_vbefb_fini; 50 static vd_probe_t vt_vbefb_probe; 51 52 static struct vt_driver vt_vbefb_driver = { 53 .vd_name = "vbefb", 54 .vd_probe = vt_vbefb_probe, 55 .vd_init = vt_vbefb_init, 56 .vd_fini = vt_vbefb_fini, 57 .vd_blank = vt_fb_blank, 58 .vd_bitblt_text = vt_fb_bitblt_text, 59 .vd_invalidate_text = vt_fb_invalidate_text, 60 .vd_bitblt_bmp = vt_fb_bitblt_bitmap, 61 .vd_bitblt_argb = vt_fb_bitblt_argb, 62 .vd_drawrect = vt_fb_drawrect, 63 .vd_setpixel = vt_fb_setpixel, 64 .vd_fb_ioctl = vt_fb_ioctl, 65 .vd_fb_mmap = vt_fb_mmap, 66 .vd_suspend = vt_suspend, 67 .vd_resume = vt_resume, 68 /* Better than VGA, but still generic driver. */ 69 .vd_priority = VD_PRIORITY_GENERIC + 1, 70 }; 71 72 static struct fb_info local_vbe_info; 73 VT_DRIVER_DECLARE(vt_vbefb, vt_vbefb_driver); 74 75 static int 76 vt_vbefb_probe(struct vt_device *vd) 77 { 78 int disabled; 79 struct vbe_fb *vbefb; 80 81 disabled = 0; 82 TUNABLE_INT_FETCH("hw.syscons.disable", &disabled); 83 if (disabled != 0) 84 return (CN_DEAD); 85 86 vbefb = (struct vbe_fb *)preload_search_info(preload_kmdp, 87 MODINFO_METADATA | MODINFOMD_VBE_FB); 88 if (vbefb == NULL) 89 return (CN_DEAD); 90 91 return (CN_INTERNAL); 92 } 93 94 static int 95 vt_vbefb_init(struct vt_device *vd) 96 { 97 struct fb_info *info; 98 struct vbe_fb *vbefb; 99 int format, roff, goff, boff; 100 101 info = vd->vd_softc; 102 if (info == NULL) 103 info = vd->vd_softc = (void *)&local_vbe_info; 104 105 vbefb = (struct vbe_fb *)preload_search_info(preload_kmdp, 106 MODINFO_METADATA | MODINFOMD_VBE_FB); 107 if (vbefb == NULL) 108 return (CN_DEAD); 109 110 info->fb_height = vbefb->fb_height; 111 info->fb_width = vbefb->fb_width; 112 113 info->fb_depth = vbefb->fb_bpp; 114 /* Round to a multiple of the bits in a byte. */ 115 info->fb_bpp = roundup2(vbefb->fb_bpp, NBBY); 116 117 /* Stride in bytes, not pixels */ 118 info->fb_stride = vbefb->fb_stride * (info->fb_bpp / NBBY); 119 120 if (info->fb_depth == 8) 121 format = COLOR_FORMAT_VGA; 122 else 123 format = COLOR_FORMAT_RGB; 124 125 roff = ffs(vbefb->fb_mask_red) - 1; 126 goff = ffs(vbefb->fb_mask_green) - 1; 127 boff = ffs(vbefb->fb_mask_blue) - 1; 128 vt_config_cons_colors(info, format, 129 vbefb->fb_mask_red >> roff, roff, 130 vbefb->fb_mask_green >> goff, goff, 131 vbefb->fb_mask_blue >> boff, boff); 132 133 /* Mark cmap initialized. */ 134 info->fb_cmsize = NCOLORS; 135 136 info->fb_size = info->fb_height * info->fb_stride; 137 info->fb_pbase = vbefb->fb_addr; 138 info->fb_vbase = (intptr_t)pmap_mapdev_attr(info->fb_pbase, 139 info->fb_size, VM_MEMATTR_WRITE_COMBINING); 140 141 vt_fb_init(vd); 142 143 return (CN_INTERNAL); 144 } 145 146 static void 147 vt_vbefb_fini(struct vt_device *vd, void *softc) 148 { 149 struct fb_info *info = softc; 150 151 vt_fb_fini(vd, softc); 152 pmap_unmapdev((void *)info->fb_vbase, info->fb_size); 153 } 154