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freebsd-skq/sys/powerpc/ofw/ofw_syscons.c
nwhitehorn 82e7fda04c Map the Open Firmware framebuffer console with write combining turned on, 
and set memory attributes appropriately for mmap() calls on /dev/console.
Xorg no longer uses /dev/console to mmap the framebuffer, so framebuffer
write combining support in X will arrive in the next patch.
2010-10-01 19:02:31 +00:00

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/*-
* Copyright (c) 2003 Peter Grehan
* All rights reserved.
*
* 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/module.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/limits.h>
#include <sys/conf.h>
#include <sys/cons.h>
#include <sys/proc.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/fbio.h>
#include <sys/consio.h>
#include <machine/bus.h>
#include <machine/sc_machdep.h>
#include <machine/vm.h>
#include <sys/rman.h>
#include <dev/fb/fbreg.h>
#include <dev/syscons/syscons.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_pci.h>
#include <powerpc/ofw/ofw_syscons.h>
static int ofwfb_ignore_mmap_checks = 1;
SYSCTL_NODE(_hw, OID_AUTO, ofwfb, CTLFLAG_RD, 0, "ofwfb");
SYSCTL_INT(_hw_ofwfb, OID_AUTO, relax_mmap, CTLFLAG_RW,
&ofwfb_ignore_mmap_checks, 0, "relaxed mmap bounds checking");
extern u_char dflt_font_16[];
extern u_char dflt_font_14[];
extern u_char dflt_font_8[];
static int ofwfb_configure(int flags);
static vi_probe_t ofwfb_probe;
static vi_init_t ofwfb_init;
static vi_get_info_t ofwfb_get_info;
static vi_query_mode_t ofwfb_query_mode;
static vi_set_mode_t ofwfb_set_mode;
static vi_save_font_t ofwfb_save_font;
static vi_load_font_t ofwfb_load_font;
static vi_show_font_t ofwfb_show_font;
static vi_save_palette_t ofwfb_save_palette;
static vi_load_palette_t ofwfb_load_palette;
static vi_set_border_t ofwfb_set_border;
static vi_save_state_t ofwfb_save_state;
static vi_load_state_t ofwfb_load_state;
static vi_set_win_org_t ofwfb_set_win_org;
static vi_read_hw_cursor_t ofwfb_read_hw_cursor;
static vi_set_hw_cursor_t ofwfb_set_hw_cursor;
static vi_set_hw_cursor_shape_t ofwfb_set_hw_cursor_shape;
static vi_blank_display_t ofwfb_blank_display;
static vi_mmap_t ofwfb_mmap;
static vi_ioctl_t ofwfb_ioctl;
static vi_clear_t ofwfb_clear;
static vi_fill_rect_t ofwfb_fill_rect;
static vi_bitblt_t ofwfb_bitblt;
static vi_diag_t ofwfb_diag;
static vi_save_cursor_palette_t ofwfb_save_cursor_palette;
static vi_load_cursor_palette_t ofwfb_load_cursor_palette;
static vi_copy_t ofwfb_copy;
static vi_putp_t ofwfb_putp;
static vi_putc_t ofwfb_putc;
static vi_puts_t ofwfb_puts;
static vi_putm_t ofwfb_putm;
static video_switch_t ofwfbvidsw = {
.probe = ofwfb_probe,
.init = ofwfb_init,
.get_info = ofwfb_get_info,
.query_mode = ofwfb_query_mode,
.set_mode = ofwfb_set_mode,
.save_font = ofwfb_save_font,
.load_font = ofwfb_load_font,
.show_font = ofwfb_show_font,
.save_palette = ofwfb_save_palette,
.load_palette = ofwfb_load_palette,
.set_border = ofwfb_set_border,
.save_state = ofwfb_save_state,
.load_state = ofwfb_load_state,
.set_win_org = ofwfb_set_win_org,
.read_hw_cursor = ofwfb_read_hw_cursor,
.set_hw_cursor = ofwfb_set_hw_cursor,
.set_hw_cursor_shape = ofwfb_set_hw_cursor_shape,
.blank_display = ofwfb_blank_display,
.mmap = ofwfb_mmap,
.ioctl = ofwfb_ioctl,
.clear = ofwfb_clear,
.fill_rect = ofwfb_fill_rect,
.bitblt = ofwfb_bitblt,
.diag = ofwfb_diag,
.save_cursor_palette = ofwfb_save_cursor_palette,
.load_cursor_palette = ofwfb_load_cursor_palette,
.copy = ofwfb_copy,
.putp = ofwfb_putp,
.putc = ofwfb_putc,
.puts = ofwfb_puts,
.putm = ofwfb_putm,
};
/*
* bitmap depth-specific routines
*/
static vi_blank_display_t ofwfb_blank_display8;
static vi_putc_t ofwfb_putc8;
static vi_putm_t ofwfb_putm8;
static vi_set_border_t ofwfb_set_border8;
static vi_blank_display_t ofwfb_blank_display32;
static vi_putc_t ofwfb_putc32;
static vi_putm_t ofwfb_putm32;
static vi_set_border_t ofwfb_set_border32;
VIDEO_DRIVER(ofwfb, ofwfbvidsw, ofwfb_configure);
extern sc_rndr_sw_t txtrndrsw;
RENDERER(ofwfb, 0, txtrndrsw, gfb_set);
RENDERER_MODULE(ofwfb, gfb_set);
/*
* Define the iso6429-1983 colormap
*/
static struct {
uint8_t red;
uint8_t green;
uint8_t blue;
} ofwfb_cmap[16] = { /* # R G B Color */
/* - - - - ----- */
{ 0x00, 0x00, 0x00 }, /* 0 0 0 0 Black */
{ 0x00, 0x00, 0xaa }, /* 1 0 0 2/3 Blue */
{ 0x00, 0xaa, 0x00 }, /* 2 0 2/3 0 Green */
{ 0x00, 0xaa, 0xaa }, /* 3 0 2/3 2/3 Cyan */
{ 0xaa, 0x00, 0x00 }, /* 4 2/3 0 0 Red */
{ 0xaa, 0x00, 0xaa }, /* 5 2/3 0 2/3 Magenta */
{ 0xaa, 0x55, 0x00 }, /* 6 2/3 1/3 0 Brown */
{ 0xaa, 0xaa, 0xaa }, /* 7 2/3 2/3 2/3 White */
{ 0x55, 0x55, 0x55 }, /* 8 1/3 1/3 1/3 Gray */
{ 0x55, 0x55, 0xff }, /* 9 1/3 1/3 1 Bright Blue */
{ 0x55, 0xff, 0x55 }, /* 10 1/3 1 1/3 Bright Green */
{ 0x55, 0xff, 0xff }, /* 11 1/3 1 1 Bright Cyan */
{ 0xff, 0x55, 0x55 }, /* 12 1 1/3 1/3 Bright Red */
{ 0xff, 0x55, 0xff }, /* 13 1 1/3 1 Bright Magenta */
{ 0xff, 0xff, 0x80 }, /* 14 1 1 1/3 Bright Yellow */
{ 0xff, 0xff, 0xff } /* 15 1 1 1 Bright White */
};
#define TODO printf("%s: unimplemented\n", __func__)
static u_int16_t ofwfb_static_window[ROW*COL];
static struct ofwfb_softc ofwfb_softc;
static __inline int
ofwfb_background(uint8_t attr)
{
return (attr >> 4);
}
static __inline int
ofwfb_foreground(uint8_t attr)
{
return (attr & 0x0f);
}
static u_int
ofwfb_pix32(int attr)
{
u_int retval;
retval = (ofwfb_cmap[attr].blue << 16) |
(ofwfb_cmap[attr].green << 8) |
ofwfb_cmap[attr].red;
return (retval);
}
static int
ofwfb_configure(int flags)
{
struct ofwfb_softc *sc;
phandle_t chosen;
ihandle_t stdout;
phandle_t node;
uint32_t fb_phys;
int depth;
int disable;
int len;
char type[16];
static int done = 0;
disable = 0;
TUNABLE_INT_FETCH("hw.syscons.disable", &disable);
if (disable != 0)
return (0);
if (done != 0)
return (0);
done = 1;
sc = &ofwfb_softc;
chosen = OF_finddevice("/chosen");
OF_getprop(chosen, "stdout", &stdout, sizeof(stdout));
node = OF_instance_to_package(stdout);
if (node == -1) {
/*
* The "/chosen/stdout" does not exist try
* using "screen" directly.
*/
node = OF_finddevice("screen");
}
OF_getprop(node, "device_type", type, sizeof(type));
if (strcmp(type, "display") != 0)
return (0);
/* Only support 8 and 32-bit framebuffers */
OF_getprop(node, "depth", &depth, sizeof(depth));
if (depth == 8) {
sc->sc_blank = ofwfb_blank_display8;
sc->sc_putc = ofwfb_putc8;
sc->sc_putm = ofwfb_putm8;
sc->sc_set_border = ofwfb_set_border8;
} else if (depth == 32) {
sc->sc_blank = ofwfb_blank_display32;
sc->sc_putc = ofwfb_putc32;
sc->sc_putm = ofwfb_putm32;
sc->sc_set_border = ofwfb_set_border32;
} else
return (0);
sc->sc_depth = depth;
sc->sc_node = node;
sc->sc_console = 1;
OF_getprop(node, "height", &sc->sc_height, sizeof(sc->sc_height));
OF_getprop(node, "width", &sc->sc_width, sizeof(sc->sc_width));
OF_getprop(node, "linebytes", &sc->sc_stride, sizeof(sc->sc_stride));
/*
* 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.
*
* XXX We assume #address-cells is 1 at this point.
*/
OF_getprop(node, "address", &fb_phys, sizeof(fb_phys));
bus_space_map(&bs_be_tag, fb_phys, sc->sc_height * sc->sc_stride,
BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_addr);
/*
* Get the PCI addresses of the adapter. 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", sc->sc_pciaddrs,
sizeof(sc->sc_pciaddrs));
if (len == -1) {
len = OF_getprop(OF_parent(node), "assigned-addresses",
sc->sc_pciaddrs, sizeof(sc->sc_pciaddrs));
}
if (len != -1) {
sc->sc_num_pciaddrs = len / sizeof(struct ofw_pci_register);
}
ofwfb_init(0, &sc->sc_va, 0);
return (0);
}
static int
ofwfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
{
TODO;
return (0);
}
static int
ofwfb_init(int unit, video_adapter_t *adp, int flags)
{
struct ofwfb_softc *sc;
video_info_t *vi;
int cborder;
int font_height;
sc = (struct ofwfb_softc *)adp;
vi = &adp->va_info;
vid_init_struct(adp, "ofwfb", -1, unit);
/* The default font size can be overridden by loader */
font_height = 16;
TUNABLE_INT_FETCH("hw.syscons.fsize", &font_height);
if (font_height == 8) {
sc->sc_font = dflt_font_8;
sc->sc_font_height = 8;
} else if (font_height == 14) {
sc->sc_font = dflt_font_14;
sc->sc_font_height = 14;
} else {
/* default is 8x16 */
sc->sc_font = dflt_font_16;
sc->sc_font_height = 16;
}
/* The user can set a border in chars - default is 1 char width */
cborder = 1;
TUNABLE_INT_FETCH("hw.syscons.border", &cborder);
vi->vi_cheight = sc->sc_font_height;
vi->vi_width = sc->sc_width/8 - 2*cborder;
vi->vi_height = sc->sc_height/sc->sc_font_height - 2*cborder;
vi->vi_cwidth = 8;
/*
* Clamp width/height to syscons maximums
*/
if (vi->vi_width > COL)
vi->vi_width = COL;
if (vi->vi_height > ROW)
vi->vi_height = ROW;
sc->sc_xmargin = (sc->sc_width - (vi->vi_width * vi->vi_cwidth)) / 2;
sc->sc_ymargin = (sc->sc_height - (vi->vi_height * vi->vi_cheight))/2;
/*
* Avoid huge amounts of conditional code in syscons by
* defining a dummy h/w text display buffer.
*/
adp->va_window = (vm_offset_t) ofwfb_static_window;
/*
* Enable future font-loading and flag color support, as well as
* adding V_ADP_MODECHANGE so that we ofwfb_set_mode() gets called
* when the X server shuts down. This enables us to get the console
* back when X disappears.
*/
adp->va_flags |= V_ADP_FONT | V_ADP_COLOR | V_ADP_MODECHANGE;
ofwfb_set_mode(&sc->sc_va, 0);
vid_register(&sc->sc_va);
return (0);
}
static int
ofwfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
{
bcopy(&adp->va_info, info, sizeof(*info));
return (0);
}
static int
ofwfb_query_mode(video_adapter_t *adp, video_info_t *info)
{
TODO;
return (0);
}
static int
ofwfb_set_mode(video_adapter_t *adp, int mode)
{
struct ofwfb_softc *sc;
char name[64];
ihandle_t ih;
int i, retval;
sc = (struct ofwfb_softc *)adp;
/*
* Open the display device, which will initialize it.
*/
memset(name, 0, sizeof(name));
OF_package_to_path(sc->sc_node, name, sizeof(name));
ih = OF_open(name);
if (sc->sc_depth == 8) {
/*
* Install the ISO6429 colormap - older OFW systems
* don't do this by default
*/
for (i = 0; i < 16; i++) {
OF_call_method("color!", ih, 4, 1,
ofwfb_cmap[i].red,
ofwfb_cmap[i].green,
ofwfb_cmap[i].blue,
i,
&retval);
}
}
ofwfb_blank_display(&sc->sc_va, V_DISPLAY_ON);
return (0);
}
static int
ofwfb_save_font(video_adapter_t *adp, int page, int size, int width,
u_char *data, int c, int count)
{
TODO;
return (0);
}
static int
ofwfb_load_font(video_adapter_t *adp, int page, int size, int width,
u_char *data, int c, int count)
{
struct ofwfb_softc *sc;
sc = (struct ofwfb_softc *)adp;
/*
* syscons code has already determined that current width/height
* are unchanged for this new font
*/
sc->sc_font = data;
return (0);
}
static int
ofwfb_show_font(video_adapter_t *adp, int page)
{
return (0);
}
static int
ofwfb_save_palette(video_adapter_t *adp, u_char *palette)
{
/* TODO; */
return (0);
}
static int
ofwfb_load_palette(video_adapter_t *adp, u_char *palette)
{
/* TODO; */
return (0);
}
static int
ofwfb_set_border8(video_adapter_t *adp, int border)
{
struct ofwfb_softc *sc;
int i, j;
uint8_t *addr;
uint8_t bground;
sc = (struct ofwfb_softc *)adp;
bground = ofwfb_background(border);
/* Set top margin */
addr = (uint8_t *) sc->sc_addr;
for (i = 0; i < sc->sc_ymargin; i++) {
for (j = 0; j < sc->sc_width; j++) {
*(addr + j) = bground;
}
addr += sc->sc_stride;
}
/* bottom margin */
addr = (uint8_t *) sc->sc_addr + (sc->sc_height - sc->sc_ymargin)*sc->sc_stride;
for (i = 0; i < sc->sc_ymargin; i++) {
for (j = 0; j < sc->sc_width; j++) {
*(addr + j) = bground;
}
addr += sc->sc_stride;
}
/* remaining left and right borders */
addr = (uint8_t *) sc->sc_addr + sc->sc_ymargin*sc->sc_stride;
for (i = 0; i < sc->sc_height - 2*sc->sc_xmargin; i++) {
for (j = 0; j < sc->sc_xmargin; j++) {
*(addr + j) = bground;
*(addr + j + sc->sc_width - sc->sc_xmargin) = bground;
}
addr += sc->sc_stride;
}
return (0);
}
static int
ofwfb_set_border32(video_adapter_t *adp, int border)
{
/* XXX Be lazy for now and blank entire screen */
return (ofwfb_blank_display32(adp, border));
}
static int
ofwfb_set_border(video_adapter_t *adp, int border)
{
struct ofwfb_softc *sc;
sc = (struct ofwfb_softc *)adp;
return ((*sc->sc_set_border)(adp, border));
}
static int
ofwfb_save_state(video_adapter_t *adp, void *p, size_t size)
{
TODO;
return (0);
}
static int
ofwfb_load_state(video_adapter_t *adp, void *p)
{
TODO;
return (0);
}
static int
ofwfb_set_win_org(video_adapter_t *adp, off_t offset)
{
TODO;
return (0);
}
static int
ofwfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
{
*col = 0;
*row = 0;
return (0);
}
static int
ofwfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
{
return (0);
}
static int
ofwfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
int celsize, int blink)
{
return (0);
}
static int
ofwfb_blank_display8(video_adapter_t *adp, int mode)
{
struct ofwfb_softc *sc;
int i;
uint8_t *addr;
sc = (struct ofwfb_softc *)adp;
addr = (uint8_t *) sc->sc_addr;
/* Could be done a lot faster e.g. 32-bits, or Altivec'd */
for (i = 0; i < sc->sc_stride*sc->sc_height; i++)
*(addr + i) = ofwfb_background(SC_NORM_ATTR);
return (0);
}
static int
ofwfb_blank_display32(video_adapter_t *adp, int mode)
{
struct ofwfb_softc *sc;
int i;
uint32_t *addr;
sc = (struct ofwfb_softc *)adp;
addr = (uint32_t *) sc->sc_addr;
for (i = 0; i < (sc->sc_stride/4)*sc->sc_height; i++)
*(addr + i) = ofwfb_pix32(ofwfb_background(SC_NORM_ATTR));
return (0);
}
static int
ofwfb_blank_display(video_adapter_t *adp, int mode)
{
struct ofwfb_softc *sc;
sc = (struct ofwfb_softc *)adp;
return ((*sc->sc_blank)(adp, mode));
}
static int
ofwfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
int prot, vm_memattr_t *memattr)
{
struct ofwfb_softc *sc;
int i;
sc = (struct ofwfb_softc *)adp;
/*
* Make sure the requested address lies within the PCI device's
* assigned addrs
*/
for (i = 0; i < sc->sc_num_pciaddrs; i++)
if (offset >= sc->sc_pciaddrs[i].phys_lo &&
offset < (sc->sc_pciaddrs[i].phys_lo + sc->sc_pciaddrs[i].size_lo))
{
/*
* If this is a prefetchable BAR, we can (and should)
* enable write-combining.
*/
if (sc->sc_pciaddrs[i].phys_hi &
OFW_PCI_PHYS_HI_PREFETCHABLE)
*memattr = VM_MEMATTR_WRITE_COMBINING;
*paddr = offset;
return (0);
}
/*
* Hack for Radeon...
*/
if (ofwfb_ignore_mmap_checks) {
*paddr = offset;
return (0);
}
/*
* This might be a legacy VGA mem request: if so, just point it at the
* framebuffer, since it shouldn't be touched
*/
if (offset < sc->sc_stride*sc->sc_height) {
*paddr = sc->sc_addr + offset;
return (0);
}
/*
* Error if we didn't have a better idea.
*/
if (sc->sc_num_pciaddrs == 0)
return (ENOMEM);
return (EINVAL);
}
static int
ofwfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
{
return (0);
}
static int
ofwfb_clear(video_adapter_t *adp)
{
TODO;
return (0);
}
static int
ofwfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
{
TODO;
return (0);
}
static int
ofwfb_bitblt(video_adapter_t *adp, ...)
{
TODO;
return (0);
}
static int
ofwfb_diag(video_adapter_t *adp, int level)
{
TODO;
return (0);
}
static int
ofwfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
{
TODO;
return (0);
}
static int
ofwfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
{
TODO;
return (0);
}
static int
ofwfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
{
TODO;
return (0);
}
static int
ofwfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
int size, int bpp, int bit_ltor, int byte_ltor)
{
TODO;
return (0);
}
static int
ofwfb_putc8(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
{
struct ofwfb_softc *sc;
int row;
int col;
int i;
uint32_t *addr;
u_char *p, fg, bg;
union {
uint32_t l;
uint8_t c[4];
} ch1, ch2;
sc = (struct ofwfb_softc *)adp;
row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
p = sc->sc_font + c*sc->sc_font_height;
addr = (u_int32_t *)((uintptr_t)sc->sc_addr
+ (row + sc->sc_ymargin)*sc->sc_stride
+ col + sc->sc_xmargin);
fg = ofwfb_foreground(a);
bg = ofwfb_background(a);
for (i = 0; i < sc->sc_font_height; i++) {
u_char fline = p[i];
/*
* Assume that there is more background than foreground
* in characters and init accordingly
*/
ch1.l = ch2.l = (bg << 24) | (bg << 16) | (bg << 8) | bg;
/*
* Calculate 2 x 4-chars at a time, and then
* write these out.
*/
if (fline & 0x80) ch1.c[0] = fg;
if (fline & 0x40) ch1.c[1] = fg;
if (fline & 0x20) ch1.c[2] = fg;
if (fline & 0x10) ch1.c[3] = fg;
if (fline & 0x08) ch2.c[0] = fg;
if (fline & 0x04) ch2.c[1] = fg;
if (fline & 0x02) ch2.c[2] = fg;
if (fline & 0x01) ch2.c[3] = fg;
addr[0] = ch1.l;
addr[1] = ch2.l;
addr += (sc->sc_stride / sizeof(u_int32_t));
}
return (0);
}
static int
ofwfb_putc32(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
{
struct ofwfb_softc *sc;
int row;
int col;
int i, j, k;
uint32_t *addr;
u_char *p;
sc = (struct ofwfb_softc *)adp;
row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
p = sc->sc_font + c*sc->sc_font_height;
addr = (uint32_t *)sc->sc_addr
+ (row + sc->sc_ymargin)*(sc->sc_stride/4)
+ col + sc->sc_xmargin;
for (i = 0; i < sc->sc_font_height; i++) {
for (j = 0, k = 7; j < 8; j++, k--) {
if ((p[i] & (1 << k)) == 0)
*(addr + j) = ofwfb_pix32(ofwfb_background(a));
else
*(addr + j) = ofwfb_pix32(ofwfb_foreground(a));
}
addr += (sc->sc_stride/4);
}
return (0);
}
static int
ofwfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
{
struct ofwfb_softc *sc;
sc = (struct ofwfb_softc *)adp;
return ((*sc->sc_putc)(adp, off, c, a));
}
static int
ofwfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
{
int i;
for (i = 0; i < len; i++) {
ofwfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
}
return (0);
}
static int
ofwfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
uint32_t pixel_mask, int size, int width)
{
struct ofwfb_softc *sc;
sc = (struct ofwfb_softc *)adp;
return ((*sc->sc_putm)(adp, x, y, pixel_image, pixel_mask, size,
width));
}
static int
ofwfb_putm8(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
uint32_t pixel_mask, int size, int width)
{
struct ofwfb_softc *sc;
int i, j, k;
uint8_t *addr;
u_char fg, bg;
sc = (struct ofwfb_softc *)adp;
addr = (u_int8_t *)((uintptr_t)sc->sc_addr
+ (y + sc->sc_ymargin)*sc->sc_stride
+ x + sc->sc_xmargin);
fg = ofwfb_foreground(SC_NORM_ATTR);
bg = ofwfb_background(SC_NORM_ATTR);
for (i = 0; i < size && i+y < sc->sc_height - 2*sc->sc_ymargin; i++) {
/*
* Calculate 2 x 4-chars at a time, and then
* write these out.
*/
for (j = 0, k = width; j < 8; j++, k--) {
if (x + j >= sc->sc_width - 2*sc->sc_xmargin)
continue;
if (pixel_image[i] & (1 << k))
addr[j] = (addr[j] == fg) ? bg : fg;
}
addr += (sc->sc_stride / sizeof(u_int8_t));
}
return (0);
}
static int
ofwfb_putm32(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
uint32_t pixel_mask, int size, int width)
{
struct ofwfb_softc *sc;
int i, j, k;
uint32_t fg, bg;
uint32_t *addr;
sc = (struct ofwfb_softc *)adp;
addr = (uint32_t *)sc->sc_addr
+ (y + sc->sc_ymargin)*(sc->sc_stride/4)
+ x + sc->sc_xmargin;
fg = ofwfb_pix32(ofwfb_foreground(SC_NORM_ATTR));
bg = ofwfb_pix32(ofwfb_background(SC_NORM_ATTR));
for (i = 0; i < size && i+y < sc->sc_height - 2*sc->sc_ymargin; i++) {
for (j = 0, k = width; j < 8; j++, k--) {
if (x + j >= sc->sc_width - 2*sc->sc_xmargin)
continue;
if (pixel_image[i] & (1 << k))
*(addr + j) = (*(addr + j) == fg) ? bg : fg;
}
addr += (sc->sc_stride/4);
}
return (0);
}
/*
* Define the syscons nexus device attachment
*/
static void
ofwfb_scidentify(driver_t *driver, device_t parent)
{
device_t child;
/*
* Add with a priority guaranteed to make it last on
* the device list
*/
child = BUS_ADD_CHILD(parent, INT_MAX, SC_DRIVER_NAME, 0);
}
static int
ofwfb_scprobe(device_t dev)
{
int error;
device_set_desc(dev, "System console");
error = sc_probe_unit(device_get_unit(dev),
device_get_flags(dev) | SC_AUTODETECT_KBD);
if (error != 0)
return (error);
/* This is a fake device, so make sure we added it ourselves */
return (BUS_PROBE_NOWILDCARD);
}
static int
ofwfb_scattach(device_t dev)
{
return (sc_attach_unit(device_get_unit(dev),
device_get_flags(dev) | SC_AUTODETECT_KBD));
}
static device_method_t ofwfb_sc_methods[] = {
DEVMETHOD(device_identify, ofwfb_scidentify),
DEVMETHOD(device_probe, ofwfb_scprobe),
DEVMETHOD(device_attach, ofwfb_scattach),
{ 0, 0 }
};
static driver_t ofwfb_sc_driver = {
SC_DRIVER_NAME,
ofwfb_sc_methods,
sizeof(sc_softc_t),
};
static devclass_t sc_devclass;
DRIVER_MODULE(sc, nexus, ofwfb_sc_driver, sc_devclass, 0, 0);
/*
* Define a stub keyboard driver in case one hasn't been
* compiled into the kernel
*/
#include <sys/kbio.h>
#include <dev/kbd/kbdreg.h>
static int dummy_kbd_configure(int flags);
keyboard_switch_t dummysw;
static int
dummy_kbd_configure(int flags)
{
return (0);
}
KEYBOARD_DRIVER(dummy, dummysw, dummy_kbd_configure);
/*
* Utility routines from <dev/fb/fbreg.h>
*/
void
ofwfb_bcopy(const void *s, void *d, size_t c)
{
bcopy(s, d, c);
}
void
ofwfb_bzero(void *d, size_t c)
{
bzero(d, c);
}
void
ofwfb_fillw(int pat, void *base, size_t cnt)
{
u_int16_t *bptr = base;
while (cnt--)
*bptr++ = pat;
}
u_int16_t
ofwfb_readw(u_int16_t *addr)
{
return (*addr);
}
void
ofwfb_writew(u_int16_t *addr, u_int16_t val)
{
*addr = val;
}
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