2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2013 The FreeBSD Foundation
7 * This software was developed by Aleksandr Rybalko under sponsorship from the
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 /* Generic framebuffer */
35 /* TODO unlink from VT(9) */
36 /* TODO done normal /dev/fb methods */
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
42 #include <sys/systm.h>
45 #include <sys/eventhandler.h>
46 #include <sys/kernel.h>
47 #include <sys/malloc.h>
48 #include <sys/module.h>
49 #include <sys/queue.h>
52 #include <machine/bus.h>
54 #include <dev/vt/vt.h>
55 #include <dev/vt/hw/fb/vt_fb.h>
62 LIST_HEAD(fb_list_head_t, fb_list_entry) fb_list_head =
63 LIST_HEAD_INITIALIZER(fb_list_head);
64 struct fb_list_entry {
65 struct fb_info *fb_info;
67 LIST_ENTRY(fb_list_entry) fb_list;
72 struct fb_info *sc_info;
75 static void fbd_evh_init(void *);
76 /* SI_ORDER_SECOND, just after EVENTHANDLERs initialized. */
77 SYSINIT(fbd_evh_init, SI_SUB_CONFIGURE, SI_ORDER_SECOND, fbd_evh_init, NULL);
79 static d_open_t fb_open;
80 static d_close_t fb_close;
81 static d_read_t fb_read;
82 static d_write_t fb_write;
83 static d_ioctl_t fb_ioctl;
84 static d_mmap_t fb_mmap;
86 static struct cdevsw fb_cdevsw = {
87 .d_version = D_VERSION,
88 .d_flags = D_NEEDGIANT,
98 static int framebuffer_dev_unit = 0;
101 fb_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
108 fb_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
115 fb_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
118 struct fb_info *info;
126 bcopy(info, (struct fbtype *)data, sizeof(struct fbtype));
129 case FBIO_GETWINORG: /* get frame buffer window origin */
133 case FBIO_GETDISPSTART: /* get display start address */
134 ((video_display_start_t *)data)->x = 0;
135 ((video_display_start_t *)data)->y = 0;
138 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
139 *(u_int *)data = info->fb_stride;
142 case FBIO_BLANK: /* blank display */
143 if (info->setblankmode != NULL)
144 error = info->setblankmode(info->fb_priv, *(int *)data);
155 fb_read(struct cdev *dev, struct uio *uio, int ioflag)
158 return (0); /* XXX nothing to read, yet */
162 fb_write(struct cdev *dev, struct uio *uio, int ioflag)
165 return (0); /* XXX nothing written */
169 fb_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, int nprot,
170 vm_memattr_t *memattr)
172 struct fb_info *info;
176 if (info->fb_flags & FB_FLAG_NOMMAP)
179 if (offset < info->fb_size) {
180 if (info->fb_pbase == 0)
181 *paddr = vtophys((uint8_t *)info->fb_vbase + offset);
183 *paddr = info->fb_pbase + offset;
184 if (info->fb_flags & FB_FLAG_MEMATTR)
185 *memattr = info->fb_memattr;
192 fb_init(struct fb_list_entry *entry, int unit)
194 struct fb_info *info;
196 info = entry->fb_info;
197 entry->fb_si = make_dev(&fb_cdevsw, unit, UID_ROOT, GID_WHEEL,
199 entry->fb_si->si_drv1 = info;
200 info->fb_cdev = entry->fb_si;
208 struct fb_list_entry *entry;
210 if (LIST_EMPTY(&fb_list_head))
213 LIST_FOREACH(entry, &fb_list_head, fb_list) {
214 printf("FB %s @%p\n", entry->fb_info->fb_name,
215 (void *)entry->fb_info->fb_pbase);
221 static struct fb_list_entry *
222 fbd_find(struct fb_info* info)
224 struct fb_list_entry *entry, *tmp;
226 LIST_FOREACH_SAFE(entry, &fb_list_head, fb_list, tmp) {
227 if (entry->fb_info == info) {
236 fbd_register(struct fb_info* info)
238 struct fb_list_entry *entry;
242 if (LIST_EMPTY(&fb_list_head))
245 entry = fbd_find(info);
247 /* XXX Update framebuffer params */
251 entry = malloc(sizeof(struct fb_list_entry), M_DEVBUF, M_WAITOK|M_ZERO);
252 entry->fb_info = info;
254 LIST_INSERT_HEAD(&fb_list_head, entry, fb_list);
256 err = fb_init(entry, framebuffer_dev_unit++);
261 err = vt_fb_attach(info);
270 fbd_unregister(struct fb_info* info)
272 struct fb_list_entry *entry, *tmp;
274 LIST_FOREACH_SAFE(entry, &fb_list_head, fb_list, tmp) {
275 if (entry->fb_info == info) {
276 LIST_REMOVE(entry, fb_list);
277 if (LIST_EMPTY(&fb_list_head))
279 free(entry, M_DEVBUF);
288 register_fb_wrap(void *arg, void *ptr)
291 fbd_register((struct fb_info *)ptr);
295 unregister_fb_wrap(void *arg, void *ptr)
298 fbd_unregister((struct fb_info *)ptr);
302 fbd_evh_init(void *ctx)
305 EVENTHANDLER_REGISTER(register_framebuffer, register_fb_wrap, NULL,
306 EVENTHANDLER_PRI_ANY);
307 EVENTHANDLER_REGISTER(unregister_framebuffer, unregister_fb_wrap, NULL,
308 EVENTHANDLER_PRI_ANY);
311 /* Newbus methods. */
313 fbd_probe(device_t dev)
316 return (BUS_PROBE_NOWILDCARD);
320 fbd_attach(device_t dev)
322 struct fbd_softc *sc;
325 sc = device_get_softc(dev);
328 sc->sc_info = FB_GETINFO(device_get_parent(dev));
329 if (sc->sc_info == NULL)
331 err = fbd_register(sc->sc_info);
337 fbd_detach(device_t dev)
339 struct fbd_softc *sc;
342 sc = device_get_softc(dev);
344 err = fbd_unregister(sc->sc_info);
349 static device_method_t fbd_methods[] = {
350 /* Device interface */
351 DEVMETHOD(device_probe, fbd_probe),
352 DEVMETHOD(device_attach, fbd_attach),
353 DEVMETHOD(device_detach, fbd_detach),
355 DEVMETHOD(device_shutdown, bus_generic_shutdown),
360 driver_t fbd_driver = {
363 sizeof(struct fbd_softc)
366 devclass_t fbd_devclass;
368 DRIVER_MODULE(fbd, fb, fbd_driver, fbd_devclass, 0, 0);
369 DRIVER_MODULE(fbd, drmn, fbd_driver, fbd_devclass, 0, 0);
370 DRIVER_MODULE(fbd, udl, fbd_driver, fbd_devclass, 0, 0);
371 MODULE_VERSION(fbd, 1);