#include <machine/rtems-bsd-kernel-space.h>
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Aleksandr Rybalko under sponsorship from the
* FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/* Generic framebuffer */
/* TODO unlink from VT(9) */
/* TODO done normal /dev/fb methods */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/queue.h>
#include <sys/fbio.h>
#include <machine/bus.h>
#include <dev/vt/vt.h>
#include <dev/vt/hw/fb/vt_fb.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <rtems/bsd/local/fb_if.h>
LIST_HEAD(fb_list_head_t, fb_list_entry) fb_list_head =
LIST_HEAD_INITIALIZER(fb_list_head);
struct fb_list_entry {
struct fb_info *fb_info;
struct cdev *fb_si;
LIST_ENTRY(fb_list_entry) fb_list;
};
struct fbd_softc {
device_t sc_dev;
struct fb_info *sc_info;
};
static void fbd_evh_init(void *);
/* SI_ORDER_SECOND, just after EVENTHANDLERs initialized. */
SYSINIT(fbd_evh_init, SI_SUB_CONFIGURE, SI_ORDER_SECOND, fbd_evh_init, NULL);
static d_open_t fb_open;
static d_close_t fb_close;
static d_read_t fb_read;
static d_write_t fb_write;
static d_ioctl_t fb_ioctl;
static d_mmap_t fb_mmap;
static struct cdevsw fb_cdevsw = {
.d_version = D_VERSION,
.d_flags = D_NEEDGIANT,
.d_open = fb_open,
.d_close = fb_close,
.d_read = fb_read,
.d_write = fb_write,
.d_ioctl = fb_ioctl,
.d_mmap = fb_mmap,
.d_name = "fb",
};
static int framebuffer_dev_unit = 0;
static int
fb_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
{
return (0);
}
static int
fb_close(struct cdev *dev, int fflag, int devtype, struct thread *td)
{
return (0);
}
static int
fb_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
struct thread *td)
{
struct fb_info *info;
int error;
error = 0;
info = dev->si_drv1;
switch (cmd) {
case FBIOGTYPE:
bcopy(info, (struct fbtype *)data, sizeof(struct fbtype));
break;
case FBIO_GETWINORG: /* get frame buffer window origin */
*(u_int *)data = 0;
break;
case FBIO_GETDISPSTART: /* get display start address */
((video_display_start_t *)data)->x = 0;
((video_display_start_t *)data)->y = 0;
break;
case FBIO_GETLINEWIDTH: /* get scan line width in bytes */
*(u_int *)data = info->fb_stride;
break;
case FBIO_BLANK: /* blank display */
if (info->setblankmode != NULL)
error = info->setblankmode(info->fb_priv, *(int *)data);
break;
default:
error = ENOIOCTL;
break;
}
return (error);
}
static int
fb_read(struct cdev *dev, struct uio *uio, int ioflag)
{
return (0); /* XXX nothing to read, yet */
}
static int
fb_write(struct cdev *dev, struct uio *uio, int ioflag)
{
return (0); /* XXX nothing written */
}
static int
fb_mmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, int nprot,
vm_memattr_t *memattr)
{
struct fb_info *info;
info = dev->si_drv1;
if (info->fb_flags & FB_FLAG_NOMMAP)
return (ENODEV);
if (offset >= 0 && offset < info->fb_size) {
if (info->fb_pbase == 0)
*paddr = vtophys((uint8_t *)info->fb_vbase + offset);
else
*paddr = info->fb_pbase + offset;
if (info->fb_flags & FB_FLAG_MEMATTR)
*memattr = info->fb_memattr;
return (0);
}
return (EINVAL);
}
static int
fb_init(struct fb_list_entry *entry, int unit)
{
struct fb_info *info;
info = entry->fb_info;
entry->fb_si = make_dev(&fb_cdevsw, unit, UID_ROOT, GID_WHEEL,
0600, "fb%d", unit);
entry->fb_si->si_drv1 = info;
info->fb_cdev = entry->fb_si;
return (0);
}
int
fbd_list()
{
struct fb_list_entry *entry;
if (LIST_EMPTY(&fb_list_head))
return (ENOENT);
LIST_FOREACH(entry, &fb_list_head, fb_list) {
printf("FB %s @%p\n", entry->fb_info->fb_name,
(void *)entry->fb_info->fb_pbase);
}
return (0);
}
static struct fb_list_entry *
fbd_find(struct fb_info* info)
{
struct fb_list_entry *entry, *tmp;
LIST_FOREACH_SAFE(entry, &fb_list_head, fb_list, tmp) {
if (entry->fb_info == info) {
return (entry);
}
}
return (NULL);
}
int
fbd_register(struct fb_info* info)
{
struct fb_list_entry *entry;
int err, first;
first = 0;
if (LIST_EMPTY(&fb_list_head))
first++;
entry = fbd_find(info);
if (entry != NULL) {
/* XXX Update framebuffer params */
return (0);
}
entry = malloc(sizeof(struct fb_list_entry), M_DEVBUF, M_WAITOK|M_ZERO);
entry->fb_info = info;
LIST_INSERT_HEAD(&fb_list_head, entry, fb_list);
err = fb_init(entry, framebuffer_dev_unit++);
if (err)
return (err);
#ifndef __rtems__
if (first) {
err = vt_fb_attach(info);
if (err)
return (err);
}
#endif /* __rtems__ */
return (0);
}
int
fbd_unregister(struct fb_info* info)
{
struct fb_list_entry *entry, *tmp;
LIST_FOREACH_SAFE(entry, &fb_list_head, fb_list, tmp) {
if (entry->fb_info == info) {
LIST_REMOVE(entry, fb_list);
#ifndef __rtems__
if (LIST_EMPTY(&fb_list_head))
vt_fb_detach(info);
#endif /* __rtems__ */
free(entry, M_DEVBUF);
return (0);
}
}
return (ENOENT);
}
static void
register_fb_wrap(void *arg, void *ptr)
{
fbd_register((struct fb_info *)ptr);
}
static void
unregister_fb_wrap(void *arg, void *ptr)
{
fbd_unregister((struct fb_info *)ptr);
}
static void
fbd_evh_init(void *ctx)
{
EVENTHANDLER_REGISTER(register_framebuffer, register_fb_wrap, NULL,
EVENTHANDLER_PRI_ANY);
EVENTHANDLER_REGISTER(unregister_framebuffer, unregister_fb_wrap, NULL,
EVENTHANDLER_PRI_ANY);
}
/* Newbus methods. */
static int
fbd_probe(device_t dev)
{
return (BUS_PROBE_NOWILDCARD);
}
static int
fbd_attach(device_t dev)
{
struct fbd_softc *sc;
int err;
sc = device_get_softc(dev);
sc->sc_dev = dev;
sc->sc_info = FB_GETINFO(device_get_parent(dev));
if (sc->sc_info == NULL)
return (ENXIO);
err = fbd_register(sc->sc_info);
return (err);
}
static int
fbd_detach(device_t dev)
{
struct fbd_softc *sc;
int err;
sc = device_get_softc(dev);
err = fbd_unregister(sc->sc_info);
return (err);
}
static device_method_t fbd_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, fbd_probe),
DEVMETHOD(device_attach, fbd_attach),
DEVMETHOD(device_detach, fbd_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ 0, 0 }
};
driver_t fbd_driver = {
"fbd",
fbd_methods,
sizeof(struct fbd_softc)
};
devclass_t fbd_devclass;
DRIVER_MODULE(fbd, fb, fbd_driver, fbd_devclass, 0, 0);
DRIVER_MODULE(fbd, drmn, fbd_driver, fbd_devclass, 0, 0);
DRIVER_MODULE(fbd, udl, fbd_driver, fbd_devclass, 0, 0);
MODULE_VERSION(fbd, 1);
