/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013 The FreeBSD Foundation
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/fbio.h>
#include "opt_platform.h"
#ifdef FDT
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/ofw/ofw_pci.h>
#include <machine/fdt.h>
#endif
#include <dev/vt/vt.h>
#include <dev/vt/hw/fb/vt_fb.h>
#include <dev/vt/colors/vt_termcolors.h>
static vd_init_t vt_efb_init;
static vd_probe_t vt_efb_probe;
static struct vt_driver vt_fb_early_driver = {
.vd_name = "efb",
.vd_probe = vt_efb_probe,
.vd_init = vt_efb_init,
.vd_blank = vt_fb_blank,
.vd_bitblt_text = vt_fb_bitblt_text,
.vd_invalidate_text = vt_fb_invalidate_text,
.vd_bitblt_bmp = vt_fb_bitblt_bitmap,
.vd_drawrect = vt_fb_drawrect,
.vd_setpixel = vt_fb_setpixel,
.vd_priority = VD_PRIORITY_GENERIC,
};
static struct fb_info local_info;
VT_DRIVER_DECLARE(vt_efb, vt_fb_early_driver);
static void
#ifdef FDT
vt_efb_initialize(struct fb_info *info, phandle_t node)
#else
vt_efb_initialize(struct fb_info *info)
#endif
{
#ifdef FDT
char name[64];
cell_t retval;
ihandle_t ih;
int i;
/* Open display device, thereby initializing it */
memset(name, 0, sizeof(name));
OF_package_to_path(node, name, sizeof(name));
ih = OF_open(name);
#endif
/*
* Set up the color map
*/
switch (info->fb_depth) {
case 8:
vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB,
0x7, 5, 0x7, 2, 0x3, 0);
break;
case 15:
vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB,
0x1f, 10, 0x1f, 5, 0x1f, 0);
break;
case 16:
vt_generate_cons_palette(info->fb_cmap, COLOR_FORMAT_RGB,
0x1f, 11, 0x3f, 5, 0x1f, 0);
break;
case 24:
case 32:
#if BYTE_ORDER == BIG_ENDIAN
vt_generate_cons_palette(info->fb_cmap,
COLOR_FORMAT_RGB, 255, 0, 255, 8, 255, 16);
#else
vt_generate_cons_palette(info->fb_cmap,
COLOR_FORMAT_RGB, 255, 16, 255, 8, 255, 0);
#endif
#ifdef FDT
for (i = 0; i < 16; i++) {
OF_call_method("color!", ih, 4, 1,
(cell_t)((info->fb_cmap[i] >> 16) & 0xff),
(cell_t)((info->fb_cmap[i] >> 8) & 0xff),
(cell_t)((info->fb_cmap[i] >> 0) & 0xff),
(cell_t)i, &retval);
}
#endif
break;
default:
panic("Unknown color space fb_depth %d", info->fb_depth);
break;
}
}
static phandle_t
vt_efb_get_fbnode()
{
phandle_t chosen, node;
ihandle_t stdout;
char type[64];
chosen = OF_finddevice("/chosen");
OF_getprop(chosen, "stdout", &stdout, sizeof(stdout));
node = OF_instance_to_package(stdout);
if (node != -1) {
/* The "/chosen/stdout" present. */
OF_getprop(node, "device_type", type, sizeof(type));
/* Check if it has "display" type. */
if (strcmp(type, "display") == 0)
return (node);
}
/* Try device with name "screen". */
node = OF_finddevice("screen");
return (node);
}
static int
vt_efb_probe(struct vt_device *vd)
{
phandle_t node;
node = vt_efb_get_fbnode();
if (node == -1)
return (CN_DEAD);
if ((OF_getproplen(node, "height") <= 0) ||
(OF_getproplen(node, "width") <= 0) ||
(OF_getproplen(node, "depth") <= 0) ||
(OF_getproplen(node, "linebytes") <= 0))
return (CN_DEAD);
return (CN_INTERNAL);
}
static int
vt_efb_init(struct vt_device *vd)
{
struct ofw_pci_register pciaddrs[8];
struct fb_info *info;
int i, len, n_pciaddrs;
phandle_t node;
if (vd->vd_softc == NULL)
vd->vd_softc = (void *)&local_info;
info = vd->vd_softc;
node = vt_efb_get_fbnode();
if (node == -1)
return (CN_DEAD);
#define GET(name, var) \
if (OF_getproplen(node, (name)) != sizeof(info->fb_##var)) \
return (CN_DEAD); \
OF_getencprop(node, (name), &info->fb_##var, sizeof(info->fb_##var)); \
if (info->fb_##var == 0) \
return (CN_DEAD);
GET("height", height)
GET("width", width)
GET("depth", depth)
GET("linebytes", stride)
#undef GET
info->fb_size = info->fb_height * info->fb_stride;
/*
* Get the PCI addresses of the adapter, if present. The node may be the
* child of the PCI device: in that case, try the parent for
* the assigned-addresses property.
*/
len = OF_getprop(node, "assigned-addresses", pciaddrs,
sizeof(pciaddrs));
if (len == -1) {
len = OF_getprop(OF_parent(node), "assigned-addresses",
pciaddrs, sizeof(pciaddrs));
}
if (len == -1)
len = 0;
n_pciaddrs = len / sizeof(struct ofw_pci_register);
/*
* Grab the physical address of the framebuffer, and then map it
* into our memory space. If the MMU is not yet up, it will be
* remapped for us when relocation turns on.
*/
if (OF_getproplen(node, "address") == sizeof(info->fb_pbase)) {
/* XXX We assume #address-cells is 1 at this point. */
OF_getencprop(node, "address", &info->fb_pbase,
sizeof(info->fb_pbase));
#if defined(__powerpc__)
sc->sc_memt = &bs_be_tag;
bus_space_map(sc->sc_memt, info->fb_pbase, info->fb_size,
BUS_SPACE_MAP_PREFETCHABLE, &info->fb_vbase);
#else
bus_space_map(fdtbus_bs_tag, info->fb_pbase, info->fb_size,
BUS_SPACE_MAP_PREFETCHABLE,
(bus_space_handle_t *)&info->fb_vbase);
#endif
} else {
/*
* Some IBM systems don't have an address property. Try to
* guess the framebuffer region from the assigned addresses.
* This is ugly, but there doesn't seem to be an alternative.
* Linux does the same thing.
*/
info->fb_pbase = n_pciaddrs;
for (i = 0; i < n_pciaddrs; i++) {
/* If it is too small, not the framebuffer */
if (pciaddrs[i].size_lo < info->fb_size)
continue;
/* If it is not memory, it isn't either */
if (!(pciaddrs[i].phys_hi &
OFW_PCI_PHYS_HI_SPACE_MEM32))
continue;
/* This could be the framebuffer */
info->fb_pbase = i;
/* If it is prefetchable, it certainly is */
if (pciaddrs[i].phys_hi & OFW_PCI_PHYS_HI_PREFETCHABLE)
break;
}
if (info->fb_pbase == n_pciaddrs) /* No candidates found */
return (CN_DEAD);
#if defined(__powerpc__)
OF_decode_addr(node, info->fb_pbase, &sc->sc_memt,
&info->fb_vbase);
#else
bus_space_map(fdtbus_bs_tag, info->fb_pbase, info->fb_size,
BUS_SPACE_MAP_PREFETCHABLE,
(bus_space_handle_t *)&info->fb_vbase);
#endif
}
/* blank full size */
len = info->fb_size / 4;
for (i = 0; i < len; i++) {
((uint32_t *)info->fb_vbase)[i] = 0;
}
/* Get pixel storage size. */
info->fb_bpp = info->fb_stride / info->fb_width * 8;
#ifdef FDT
vt_efb_initialize(info, node);
#else
vt_efb_initialize(info);
#endif
vt_fb_init(vd);
return (CN_INTERNAL);
}
