2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2013 The FreeBSD Foundation
6 * This software was developed by Aleksandr Rybalko under sponsorship from the
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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.
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
31 /* Generic framebuffer */
32 /* TODO unlink from VT(9) */
33 /* TODO done normal /dev/fb methods */
35 #include <sys/cdefs.h>
36 #include <sys/param.h>
37 #include <sys/systm.h>
40 #include <sys/eventhandler.h>
41 #include <sys/kernel.h>
42 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/queue.h>
47 #include <machine/bus.h>
49 #include <dev/vt/vt.h>
50 #include <dev/vt/hw/fb/vt_fb.h>
57 LIST_HEAD(fb_list_head_t, fb_list_entry) fb_list_head =
58 LIST_HEAD_INITIALIZER(fb_list_head);
59 struct fb_list_entry {
60 struct fb_info *fb_info;
62 LIST_ENTRY(fb_list_entry) fb_list;
67 struct fb_info *sc_info;
70 static void fbd_evh_init(void *);
71 /* SI_ORDER_SECOND, just after EVENTHANDLERs initialized. */
72 SYSINIT(fbd_evh_init, SI_SUB_CONFIGURE, SI_ORDER_SECOND, fbd_evh_init, NULL);
74 static d_open_t fb_open;
75 static d_close_t fb_close;
76 static d_read_t fb_read;
77 static d_write_t fb_write;
78 static d_ioctl_t fb_ioctl;
79 static d_mmap_t fb_mmap;
81 static struct cdevsw fb_cdevsw = {
82 .d_version = D_VERSION,
83 .d_flags = D_NEEDGIANT,
93 static int framebuffer_dev_unit = 0;
96 fb_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
103 fb_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
110 fb_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
113 struct fb_info *info;
121 bcopy(info, (struct fbtype *)data, sizeof(struct fbtype));
124 case FBIO_GETWINORG: /* get frame buffer window origin */
128 case FBIO_GETDISPSTART: /* get display start address */
129 ((video_display_start_t *)data)->x = 0;
130 ((video_display_start_t *)data)->y = 0;
133 case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
134 *(u_int *)data = info->fb_stride;
137 case FBIO_BLANK: /* blank display */
138 if (info->setblankmode != NULL)
139 error = info->setblankmode(info->fb_priv, *(int *)data);
150 fb_read(struct cdev *dev, struct uio *uio, int ioflag)
153 return (0); /* XXX nothing to read, yet */
157 fb_write(struct cdev *dev, struct uio *uio, int ioflag)
160 return (0); /* XXX nothing written */
164 fb_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, int nprot,
165 vm_memattr_t *memattr)
167 struct fb_info *info;
171 if (info->fb_flags & FB_FLAG_NOMMAP)
174 if (offset < info->fb_size) {
175 if (info->fb_pbase == 0)
176 *paddr = vtophys((uint8_t *)info->fb_vbase + offset);
178 *paddr = info->fb_pbase + offset;
179 if (info->fb_flags & FB_FLAG_MEMATTR)
180 *memattr = info->fb_memattr;
187 fb_init(struct fb_list_entry *entry, int unit)
189 struct fb_info *info;
191 info = entry->fb_info;
192 entry->fb_si = make_dev(&fb_cdevsw, unit, UID_ROOT, GID_WHEEL,
194 entry->fb_si->si_drv1 = info;
195 info->fb_cdev = entry->fb_si;
203 struct fb_list_entry *entry;
205 if (LIST_EMPTY(&fb_list_head))
208 LIST_FOREACH(entry, &fb_list_head, fb_list) {
209 printf("FB %s @%#jx\n", entry->fb_info->fb_name,
210 (uintmax_t)entry->fb_info->fb_pbase);
216 static struct fb_list_entry *
217 fbd_find(struct fb_info* info)
219 struct fb_list_entry *entry, *tmp;
221 LIST_FOREACH_SAFE(entry, &fb_list_head, fb_list, tmp) {
222 if (entry->fb_info == info) {
231 fbd_register(struct fb_info* info)
233 struct fb_list_entry *entry;
237 if (LIST_EMPTY(&fb_list_head))
240 entry = fbd_find(info);
242 /* XXX Update framebuffer params */
246 entry = malloc(sizeof(struct fb_list_entry), M_DEVBUF, M_WAITOK|M_ZERO);
247 entry->fb_info = info;
249 LIST_INSERT_HEAD(&fb_list_head, entry, fb_list);
251 err = fb_init(entry, framebuffer_dev_unit++);
256 err = vt_fb_attach(info);
265 fbd_unregister(struct fb_info* info)
267 struct fb_list_entry *entry, *tmp;
269 LIST_FOREACH_SAFE(entry, &fb_list_head, fb_list, tmp) {
270 if (entry->fb_info == info) {
271 LIST_REMOVE(entry, fb_list);
272 if (LIST_EMPTY(&fb_list_head))
274 free(entry, M_DEVBUF);
283 register_fb_wrap(void *arg, void *ptr)
286 fbd_register((struct fb_info *)ptr);
290 unregister_fb_wrap(void *arg, void *ptr)
293 fbd_unregister((struct fb_info *)ptr);
297 fbd_evh_init(void *ctx)
300 EVENTHANDLER_REGISTER(register_framebuffer, register_fb_wrap, NULL,
301 EVENTHANDLER_PRI_ANY);
302 EVENTHANDLER_REGISTER(unregister_framebuffer, unregister_fb_wrap, NULL,
303 EVENTHANDLER_PRI_ANY);
306 /* Newbus methods. */
308 fbd_probe(device_t dev)
311 return (BUS_PROBE_NOWILDCARD);
315 fbd_attach(device_t dev)
317 struct fbd_softc *sc;
320 sc = device_get_softc(dev);
323 sc->sc_info = FB_GETINFO(device_get_parent(dev));
324 if (sc->sc_info == NULL)
326 err = fbd_register(sc->sc_info);
332 fbd_detach(device_t dev)
334 struct fbd_softc *sc;
337 sc = device_get_softc(dev);
339 err = fbd_unregister(sc->sc_info);
344 static device_method_t fbd_methods[] = {
345 /* Device interface */
346 DEVMETHOD(device_probe, fbd_probe),
347 DEVMETHOD(device_attach, fbd_attach),
348 DEVMETHOD(device_detach, fbd_detach),
350 DEVMETHOD(device_shutdown, bus_generic_shutdown),
355 driver_t fbd_driver = {
358 sizeof(struct fbd_softc)
361 DRIVER_MODULE(fbd, fb, fbd_driver, 0, 0);
362 DRIVER_MODULE(fbd, drmn, fbd_driver, 0, 0);
363 DRIVER_MODULE(fbd, udl, fbd_driver, 0, 0);
364 MODULE_VERSION(fbd, 1);