a simple fb driver for Sun XVR-1000 boards

This commit is contained in:
macallan 2009-12-29 06:55:55 +00:00
parent 875f862227
commit 5f7d924101
1 changed files with 437 additions and 0 deletions

437
sys/arch/sparc64/dev/gfb.c Normal file
View File

@ -0,0 +1,437 @@
/* $NetBSD: gfb.c,v 1.1 2009/12/29 06:55:55 macallan Exp $ */
/*
* Copyright (c) 2009 Michael Lorenz
* 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 ``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 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.
*/
/*
* A console driver for Sun XVR-1000 graphics cards
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: gfb.c,v 1.1 2009/12/29 06:55:55 macallan Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/lwp.h>
#include <sys/kauth.h>
#include <sys/kmem.h>
#include <uvm/uvm_extern.h>
#include <dev/videomode/videomode.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wsfont/wsfont.h>
#include <dev/rasops/rasops.h>
#include <dev/wscons/wsdisplay_vconsvar.h>
struct gfb_softc {
device_t sc_dev;
bus_space_tag_t sc_memt;
bus_space_handle_t sc_fbh;
bus_addr_t sc_fb_paddr;
int sc_width, sc_height, sc_depth, sc_stride, sc_fblen;
int sc_locked;
void *sc_fbaddr, *sc_shadow;
struct vcons_screen sc_console_screen;
struct wsscreen_descr sc_defaultscreen_descr;
const struct wsscreen_descr *sc_screens[1];
struct wsscreen_list sc_screenlist;
struct vcons_data vd;
int sc_mode;
int sc_node;
u_char sc_cmap_red[256];
u_char sc_cmap_green[256];
u_char sc_cmap_blue[256];
};
static int gfb_match(device_t, cfdata_t, void *);
static void gfb_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(gfb, sizeof(struct gfb_softc),
gfb_match, gfb_attach, NULL, NULL);
extern const u_char rasops_cmap[768];
static int gfb_ioctl(void *, void *, u_long, void *, int,
struct lwp *);
static paddr_t gfb_mmap(void *, void *, off_t, int);
static void gfb_init_screen(void *, struct vcons_screen *, int, long *);
static int gfb_putcmap(struct gfb_softc *, struct wsdisplay_cmap *);
static int gfb_getcmap(struct gfb_softc *, struct wsdisplay_cmap *);
static void gfb_restore_palette(struct gfb_softc *);
static int gfb_putpalreg(struct gfb_softc *, uint8_t, uint8_t,
uint8_t, uint8_t);
struct wsdisplay_accessops gfb_accessops = {
gfb_ioctl,
gfb_mmap,
NULL, /* alloc_screen */
NULL, /* free_screen */
NULL, /* show_screen */
NULL, /* load_font */
NULL, /* pollc */
NULL /* scroll */
};
extern int prom_stdout_node;
static int
gfb_match(device_t parent, cfdata_t match, void *aux)
{
struct mainbus_attach_args *ma = aux;
if (strcmp(ma->ma_name, "SUNW,gfb") == 0 )
return 100;
return 0;
}
static void
gfb_attach(device_t parent, device_t self, void *aux)
{
struct gfb_softc *sc = device_private(self);
struct mainbus_attach_args *ma = aux;
struct rasops_info *ri;
struct wsemuldisplaydev_attach_args aa;
unsigned long defattr;
bool is_console;
int i, j;
sc->sc_memt = ma->ma_bustag;
sc->sc_dev = self;
sc->sc_node = ma->ma_node;
if (ma->ma_nreg < 7) {
aprint_error("%s: can't find the fb range\n",
device_xname(self));
return;
}
is_console = (prom_stdout_node == ma->ma_node);
aprint_normal(": Sun XVR-1000%s\n", is_console ? " (console)" : "");
sc->sc_depth = 32;
sc->sc_stride = 0x4000;
sc->sc_height = prom_getpropint(sc->sc_node, "height", 0);
sc->sc_width = prom_getpropint(sc->sc_node, "width", 0);
sc->sc_fblen = sc->sc_stride * sc->sc_height;
if (sc->sc_fblen == 0) {
aprint_error("%s: not set up by firmware, can't continue.\n",
device_xname(self));
return;
}
sc->sc_shadow = kmem_alloc(sc->sc_fblen, KM_SLEEP);
sc->sc_locked = 0;
sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
if (bus_space_map(sc->sc_memt, ma->ma_reg[6].ur_paddr,
sc->sc_fblen, BUS_SPACE_MAP_LINEAR, &sc->sc_fbh)) {
printf(": failed to map the framebuffer\n");
return;
}
sc->sc_fbaddr = bus_space_vaddr(sc->sc_memt, sc->sc_fbh);
sc->sc_fb_paddr = ma->ma_reg[6].ur_paddr;
sc->sc_defaultscreen_descr = (struct wsscreen_descr){
"default",
0, 0,
NULL,
8, 16,
WSSCREEN_WSCOLORS | WSSCREEN_HILIT,
NULL
};
sc->sc_screens[0] = &sc->sc_defaultscreen_descr;
sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens};
sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
sc->sc_locked = 0;
vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr,
&gfb_accessops);
sc->vd.init_screen = gfb_init_screen;
ri = &sc->sc_console_screen.scr_ri;
j = 0;
for (i = 0; i < (1 << sc->sc_depth); i++) {
sc->sc_cmap_red[i] = rasops_cmap[j];
sc->sc_cmap_green[i] = rasops_cmap[j + 1];
sc->sc_cmap_blue[i] = rasops_cmap[j + 2];
gfb_putpalreg(sc, i, rasops_cmap[j], rasops_cmap[j + 1],
rasops_cmap[j + 2]);
j += 3;
}
if (is_console) {
vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1,
&defattr);
sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
#if notyet
gfb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height,
ri->ri_devcmap[(defattr >> 16) & 0xff]);
#endif
sc->sc_defaultscreen_descr.textops = &ri->ri_ops;
sc->sc_defaultscreen_descr.capabilities = ri->ri_caps;
sc->sc_defaultscreen_descr.nrows = ri->ri_rows;
sc->sc_defaultscreen_descr.ncols = ri->ri_cols;
wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0,
defattr);
vcons_replay_msgbuf(&sc->sc_console_screen);
} else {
/*
* since we're not the console we can postpone the rest
* until someone actually allocates a screen for us
*/
(*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
}
aa.console = is_console;
aa.scrdata = &sc->sc_screenlist;
aa.accessops = &gfb_accessops;
aa.accesscookie = &sc->vd;
config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
}
static int
gfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
struct lwp *l)
{
struct vcons_data *vd = v;
struct gfb_softc *sc = vd->cookie;
struct wsdisplay_fbinfo *wdf;
struct vcons_screen *ms = vd->active;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_PCIMISC;
return 0;
case WSDISPLAYIO_GINFO:
if (ms == NULL)
return ENODEV;
wdf = (void *)data;
wdf->height = ms->scr_ri.ri_height;
wdf->width = ms->scr_ri.ri_width;
wdf->depth = ms->scr_ri.ri_depth;
wdf->cmsize = 256;
return 0;
case WSDISPLAYIO_GETCMAP:
return gfb_getcmap(sc,
(struct wsdisplay_cmap *)data);
case WSDISPLAYIO_PUTCMAP:
return gfb_putcmap(sc,
(struct wsdisplay_cmap *)data);
case WSDISPLAYIO_LINEBYTES:
*(u_int *)data = sc->sc_stride;
return 0;
case WSDISPLAYIO_SMODE:
{
int new_mode = *(int*)data;
/* notify the bus backend */
if (new_mode != sc->sc_mode) {
sc->sc_mode = new_mode;
if(new_mode == WSDISPLAYIO_MODE_EMUL) {
gfb_restore_palette(sc);
vcons_redraw_screen(ms);
}
}
}
return 0;
}
return EPASSTHROUGH;
}
static paddr_t
gfb_mmap(void *v, void *vs, off_t offset, int prot)
{
struct vcons_data *vd = v;
struct gfb_softc *sc = vd->cookie;
paddr_t pa;
/* 'regular' framebuffer mmap()ing */
if (offset < sc->sc_fblen) {
pa = bus_space_mmap(sc->sc_memt, sc->sc_fb_paddr + offset, 0,
prot, BUS_SPACE_MAP_LINEAR);
return pa;
}
/*
* restrict all other mappings to processes with superuser privileges
* or the kernel itself
*/
if (kauth_authorize_generic(kauth_cred_get(), KAUTH_GENERIC_ISSUSER,
NULL) != 0) {
aprint_normal("%s: mmap() rejected.\n",
device_xname(sc->sc_dev));
return -1;
}
/* let userland map other ranges */
return -1;
}
static void
gfb_init_screen(void *cookie, struct vcons_screen *scr,
int existing, long *defattr)
{
struct gfb_softc *sc = cookie;
struct rasops_info *ri = &scr->scr_ri;
ri->ri_depth = sc->sc_depth;
ri->ri_width = sc->sc_width;
ri->ri_height = sc->sc_height;
ri->ri_stride = sc->sc_stride;
ri->ri_flg = RI_CENTER | RI_FULLCLEAR;
ri->ri_bits = sc->sc_shadow;
ri->ri_hwbits = (char *)sc->sc_fbaddr;
if (existing) {
ri->ri_flg |= RI_CLEAR;
}
rasops_init(ri, sc->sc_height / 8, sc->sc_width / 8);
ri->ri_caps = WSSCREEN_WSCOLORS;
rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
sc->sc_width / ri->ri_font->fontwidth);
ri->ri_hw = scr;
#if 0
ri->ri_ops.copyrows = gfb_copyrows;
ri->ri_ops.copycols = gfb_copycols;
ri->ri_ops.cursor = gfb_cursor;
ri->ri_ops.eraserows = gfb_eraserows;
ri->ri_ops.erasecols = gfb_erasecols;
ri->ri_ops.putchar = gfb_putchar;
#endif
}
static int
gfb_putcmap(struct gfb_softc *sc, struct wsdisplay_cmap *cm)
{
u_char *r, *g, *b;
u_int index = cm->index;
u_int count = cm->count;
int i, error;
u_char rbuf[256], gbuf[256], bbuf[256];
#ifdef GFB_DEBUG
aprint_debug("putcmap: %d %d\n",index, count);
#endif
if (cm->index >= 256 || cm->count > 256 ||
(cm->index + cm->count) > 256)
return EINVAL;
error = copyin(cm->red, &rbuf[index], count);
if (error)
return error;
error = copyin(cm->green, &gbuf[index], count);
if (error)
return error;
error = copyin(cm->blue, &bbuf[index], count);
if (error)
return error;
memcpy(&sc->sc_cmap_red[index], &rbuf[index], count);
memcpy(&sc->sc_cmap_green[index], &gbuf[index], count);
memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count);
r = &sc->sc_cmap_red[index];
g = &sc->sc_cmap_green[index];
b = &sc->sc_cmap_blue[index];
for (i = 0; i < count; i++) {
gfb_putpalreg(sc, index, *r, *g, *b);
index++;
r++, g++, b++;
}
return 0;
}
static int
gfb_getcmap(struct gfb_softc *sc, struct wsdisplay_cmap *cm)
{
u_int index = cm->index;
u_int count = cm->count;
int error;
if (index >= 255 || count > 256 || index + count > 256)
return EINVAL;
error = copyout(&sc->sc_cmap_red[index], cm->red, count);
if (error)
return error;
error = copyout(&sc->sc_cmap_green[index], cm->green, count);
if (error)
return error;
error = copyout(&sc->sc_cmap_blue[index], cm->blue, count);
if (error)
return error;
return 0;
}
static void
gfb_restore_palette(struct gfb_softc *sc)
{
int i;
for (i = 0; i < (1 << sc->sc_depth); i++) {
gfb_putpalreg(sc, i, sc->sc_cmap_red[i],
sc->sc_cmap_green[i], sc->sc_cmap_blue[i]);
}
}
static int
gfb_putpalreg(struct gfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g,
uint8_t b)
{
return 0;
}