2 * Copyright (c) 2013 The FreeBSD Foundation
5 * This software was developed by Aleksandr Rybalko under sponsorship from the
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 /* Generic framebuffer */
33 /* TODO unlink from VT(9) */
34 /* TODO done normal /dev/fb methods */
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #include <sys/param.h>
40 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/malloc.h>
45 #include <sys/module.h>
46 #include <sys/queue.h>
49 #include <machine/bus.h>
51 #include <dev/vt/vt.h>
52 #include <dev/vt/hw/fb/vt_fb.h>
59 LIST_HEAD(fb_list_head_t, fb_list_entry) fb_list_head =
60 LIST_HEAD_INITIALIZER(fb_list_head);
61 struct fb_list_entry {
62 struct fb_info *fb_info;
64 LIST_ENTRY(fb_list_entry) fb_list;
69 struct fb_info *sc_info;
72 static void fbd_evh_init(void *);
73 /* SI_ORDER_SECOND, just after EVENTHANDLERs initialized. */
74 SYSINIT(fbd_evh_init, SI_SUB_CONFIGURE, SI_ORDER_SECOND, fbd_evh_init, NULL);
76 static d_open_t fb_open;
77 static d_close_t fb_close;
78 static d_read_t fb_read;
79 static d_write_t fb_write;
80 static d_ioctl_t fb_ioctl;
81 static d_mmap_t fb_mmap;
83 static struct cdevsw fb_cdevsw = {
84 .d_version = D_VERSION,
85 .d_flags = D_NEEDGIANT,
95 static int framebuffer_dev_unit = 0;
98 fb_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
105 fb_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
112 fb_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
115 struct fb_info *info;
123 bcopy(info, (struct fbtype *)data, sizeof(struct fbtype));
126 case FBIO_GETWINORG: /* get frame buffer window origin */
130 case FBIO_GETDISPSTART: /* get display start address */
131 ((video_display_start_t *)data)->x = 0;
132 ((video_display_start_t *)data)->y = 0;
135 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
136 *(u_int *)data = info->fb_stride;
139 case FBIO_BLANK: /* blank display */
140 if (info->setblankmode != NULL)
141 error = info->setblankmode(info->fb_priv, *(int *)data);
152 fb_read(struct cdev *dev, struct uio *uio, int ioflag)
155 return (0); /* XXX nothing to read, yet */
159 fb_write(struct cdev *dev, struct uio *uio, int ioflag)
162 return (0); /* XXX nothing written */
166 fb_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, int nprot,
167 vm_memattr_t *memattr)
169 struct fb_info *info;
173 if (info->fb_flags & FB_FLAG_NOMMAP)
176 if (offset >= 0 && offset < info->fb_size) {
177 if (info->fb_pbase == 0)
178 *paddr = vtophys((uint8_t *)info->fb_vbase + offset);
180 *paddr = info->fb_pbase + offset;
181 if (info->fb_flags & FB_FLAG_MEMATTR)
182 *memattr = info->fb_memattr;
189 fb_init(struct fb_list_entry *entry, int unit)
191 struct fb_info *info;
193 info = entry->fb_info;
194 entry->fb_si = make_dev(&fb_cdevsw, unit, UID_ROOT, GID_WHEEL,
196 entry->fb_si->si_drv1 = info;
197 info->fb_cdev = entry->fb_si;
205 struct fb_list_entry *entry;
207 if (LIST_EMPTY(&fb_list_head))
210 LIST_FOREACH(entry, &fb_list_head, fb_list) {
211 printf("FB %s @%p\n", entry->fb_info->fb_name,
212 (void *)entry->fb_info->fb_pbase);
218 static struct fb_list_entry *
219 fbd_find(struct fb_info* info)
221 struct fb_list_entry *entry, *tmp;
223 LIST_FOREACH_SAFE(entry, &fb_list_head, fb_list, tmp) {
224 if (entry->fb_info == info) {
233 fbd_register(struct fb_info* info)
235 struct fb_list_entry *entry;
239 if (LIST_EMPTY(&fb_list_head))
242 entry = fbd_find(info);
244 /* XXX Update framebuffer params */
248 entry = malloc(sizeof(struct fb_list_entry), M_DEVBUF, M_WAITOK|M_ZERO);
249 entry->fb_info = info;
251 LIST_INSERT_HEAD(&fb_list_head, entry, fb_list);
253 err = fb_init(entry, framebuffer_dev_unit++);
258 err = vt_fb_attach(info);
267 fbd_unregister(struct fb_info* info)
269 struct fb_list_entry *entry, *tmp;
271 LIST_FOREACH_SAFE(entry, &fb_list_head, fb_list, tmp) {
272 if (entry->fb_info == info) {
273 LIST_REMOVE(entry, fb_list);
274 if (LIST_EMPTY(&fb_list_head))
276 free(entry, M_DEVBUF);
285 register_fb_wrap(void *arg, void *ptr)
288 fbd_register((struct fb_info *)ptr);
292 unregister_fb_wrap(void *arg, void *ptr)
295 fbd_unregister((struct fb_info *)ptr);
299 fbd_evh_init(void *ctx)
302 EVENTHANDLER_REGISTER(register_framebuffer, register_fb_wrap, NULL,
303 EVENTHANDLER_PRI_ANY);
304 EVENTHANDLER_REGISTER(unregister_framebuffer, unregister_fb_wrap, NULL,
305 EVENTHANDLER_PRI_ANY);
308 /* Newbus methods. */
310 fbd_probe(device_t dev)
313 return (BUS_PROBE_NOWILDCARD);
317 fbd_attach(device_t dev)
319 struct fbd_softc *sc;
322 sc = device_get_softc(dev);
325 sc->sc_info = FB_GETINFO(device_get_parent(dev));
326 if (sc->sc_info == NULL)
328 err = fbd_register(sc->sc_info);
334 fbd_detach(device_t dev)
336 struct fbd_softc *sc;
339 sc = device_get_softc(dev);
341 err = fbd_unregister(sc->sc_info);
346 static device_method_t fbd_methods[] = {
347 /* Device interface */
348 DEVMETHOD(device_probe, fbd_probe),
349 DEVMETHOD(device_attach, fbd_attach),
350 DEVMETHOD(device_detach, fbd_detach),
352 DEVMETHOD(device_shutdown, bus_generic_shutdown),
357 driver_t fbd_driver = {
360 sizeof(struct fbd_softc)
363 devclass_t fbd_devclass;
365 DRIVER_MODULE(fbd, fb, fbd_driver, fbd_devclass, 0, 0);
366 DRIVER_MODULE(fbd, drmn, fbd_driver, fbd_devclass, 0, 0);
367 DRIVER_MODULE(fbd, udl, fbd_driver, fbd_devclass, 0, 0);
368 MODULE_VERSION(fbd, 1);