NetBSD/sys/arch/macppc/dev/ofb.c

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/* $NetBSD: ofb.c,v 1.4 1998/11/19 15:38:23 mrg Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/rcons/raster.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wscons_raster.h>
#include <dev/wscons/wsdisplayvar.h>
#include <machine/bat.h>
#include <machine/bus.h>
#include <machine/grfioctl.h>
#include <macppc/dev/ofbvar.h>
int ofbmatch __P((struct device *, struct cfdata *, void *));
void ofbattach __P((struct device *, struct device *, void *));
int ofbprint __P((void *, const char *));
struct cfattach ofb_ca = {
sizeof(struct ofb_softc), ofbmatch, ofbattach,
};
struct ofb_devconfig ofb_console_dc;
struct wsdisplay_emulops ofb_emulops = {
rcons_cursor, /* could use hardware cursor; punt */
rcons_mapchar,
rcons_putchar,
rcons_copycols,
rcons_erasecols,
rcons_copyrows,
rcons_eraserows,
rcons_alloc_attr
};
struct wsscreen_descr ofb_stdscreen = {
"std",
0, 0, /* will be filled in -- XXX shouldn't, it's global */
&ofb_emulops,
0, 0,
WSSCREEN_REVERSE
};
const struct wsscreen_descr *_ofb_scrlist[] = {
&ofb_stdscreen,
/* XXX other formats, graphics screen? */
};
struct wsscreen_list ofb_screenlist = {
sizeof(_ofb_scrlist) / sizeof(struct wsscreen_descr *), _ofb_scrlist
};
static int ofb_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
static int ofb_mmap __P((void *, off_t, int));
static int ofb_alloc_screen __P((void *, const struct wsscreen_descr *,
void **, int *, int *, long *));
static void ofb_free_screen __P((void *, void *));
static void ofb_show_screen __P((void *, void *));
static int ofb_load_font __P((void *, void *, int, int, int, void *));
struct wsdisplay_accessops ofb_accessops = {
ofb_ioctl,
ofb_mmap,
ofb_alloc_screen,
ofb_free_screen,
ofb_show_screen,
ofb_load_font
};
static void ofb_common_init __P((int, struct ofb_devconfig *));
int
ofbmatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct pci_attach_args *pa = aux;
/* /chaos/control */
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE &&
PCI_PRODUCT(pa->pa_id) == 3)
return 1;
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY)
return 1;
return 0;
}
void
ofbattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct ofb_softc *sc = (struct ofb_softc *)self;
struct pci_attach_args *pa = aux;
struct wsemuldisplaydev_attach_args a;
int console;
struct ofb_devconfig *dc;
console = ofb_is_console();
if (console) {
dc = &ofb_console_dc;
sc->nscreens = 1;
} else {
int node;
dc = malloc(sizeof(struct ofb_devconfig), M_DEVBUF, M_WAITOK);
bzero(dc, sizeof(struct ofb_devconfig));
node = pcidev_to_ofdev(pa);
if (node == 0) {
printf(": ofdev not found\n");
return;
}
ofb_common_init(node, dc);
}
sc->sc_dc = dc;
if (dc->dc_paddr == 0) {
printf(": cannot map framebuffer\n");
return;
}
dc->dc_raster.pixels = mapiodev(dc->dc_paddr,
dc->dc_linebytes * dc->dc_height);
1998-10-14 17:21:10 +04:00
printf(": %d x %d, %dbpp\n",
dc->dc_raster.width, dc->dc_raster.height, dc->dc_raster.depth);
a.console = console;
a.scrdata = &ofb_screenlist;
a.accessops = &ofb_accessops;
a.accesscookie = sc;
#ifdef DEBUG
asm volatile ("mtdbatl 3,%0; mtdbatu 3,%1" :: "r"(0), "r"(0));
#endif
config_found(self, &a, wsemuldisplaydevprint);
}
void
ofb_common_init(node, dc)
int node;
struct ofb_devconfig *dc;
{
struct raster *rap;
struct rcons *rcp;
int i;
int addr, width, height, linebytes, depth;
u_int regs[5];
OF_getprop(node, "assigned-addresses", regs, sizeof(regs));
addr = regs[2] & 0xf0000000;
/* Map the framebuffer using BAT3. (va == pa) */
asm volatile ("mtdbatl 3,%0; mtdbatu 3,%1; isync"
:: "r"(BATL(addr, BAT_I)), "r"(BATU(addr)));
if (dc->dc_ih == 0) {
char name[64];
bzero(name, 64);
OF_package_to_path(node, name, sizeof(name));
dc->dc_ih = OF_open(name);
}
/*
* /chaos/control don't have "width", "height", ...
*/
width = height = -1;
if (OF_getprop(node, "width", &width, sizeof(width)) != 4)
OF_interpret("screen-width", 1, &width);
if (OF_getprop(node, "height", &height, sizeof(height)) != 4)
OF_interpret("screen-height", 1, &height);
if (OF_getprop(node, "linebytes", &linebytes, sizeof(linebytes)) != 4)
linebytes = width; /* XXX */
if (OF_getprop(node, "depth", &depth, sizeof(depth)) != 4)
depth = 8; /* XXX */
if (width == -1 || height == -1)
return;
OF_interpret("frame-buffer-adr", 1, &addr);
if (addr == 0)
return;
dc->dc_paddr = addr; /* PA of the frame buffer */
/* Set colormap to black on white. */
OF_call_method_1("color!", dc->dc_ih, 4, 0, 0, 0, 0xff);
OF_call_method_1("color!", dc->dc_ih, 4, 255, 255, 255, 0);
for (i = 0; i < height * linebytes; i += sizeof(u_int32_t))
*(u_int32_t *)(addr + i) = 0;
/* initialize the raster */
rap = &dc->dc_raster;
rap->width = width;
rap->height = height;
rap->depth = depth;
rap->linelongs = linebytes / sizeof(u_int32_t);
rap->pixels = (u_int32_t *)addr;
/* initialize the raster console blitter */
rcp = &dc->dc_rcons;
rcp->rc_sp = rap;
rcp->rc_crow = rcp->rc_ccol = -1;
rcp->rc_crowp = &rcp->rc_crow;
rcp->rc_ccolp = &rcp->rc_ccol;
rcons_init(rcp, 128, 128);
ofb_stdscreen.nrows = dc->dc_rcons.rc_maxrow;
ofb_stdscreen.ncols = dc->dc_rcons.rc_maxcol;
}
int
ofb_is_console()
{
int chosen, stdout, node;
char type[16];
chosen = OF_finddevice("/chosen");
OF_getprop(chosen, "stdout", &stdout, 4);
node = OF_instance_to_package(stdout);
OF_getprop(node, "device_type", type, sizeof(type));
if (strcmp(type, "display") == 0)
return 1;
else
return 0;
}
int
ofb_ioctl(v, cmd, data, flag, p)
void *v;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
struct ofb_softc *sc = v;
struct ofb_devconfig *dc = sc->sc_dc;
struct wsdisplay_fbinfo *wdf;
struct grfinfo *gm;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_PCIMISC; /* XXX ? */
return 0;
case WSDISPLAYIO_GINFO:
wdf = (void *)data;
wdf->height = sc->sc_dc->dc_raster.height;
wdf->width = sc->sc_dc->dc_raster.width;
wdf->depth = sc->sc_dc->dc_raster.depth;
wdf->cmsize = 256;
return 0;
case WSDISPLAYIO_PUTCMAP:
return putcmap(sc, data);
/* XXX There are no way to know framebuffer pa from a user program. */
case GRFIOCGINFO:
gm = (void *)data;
bzero(gm, sizeof(struct grfinfo));
gm->gd_fbaddr = (caddr_t)sc->sc_dc->dc_paddr;
gm->gd_fbrowbytes = sc->sc_dc->dc_linebytes;
return 0;
}
return -1;
}
int
ofb_mmap(v, offset, prot)
void *v;
off_t offset;
int prot;
{
struct ofb_softc *sc = v;
struct ofb_devconfig *dc = sc->sc_dc;
if (offset >= (dc->dc_linebytes * dc->dc_height) || offset < 0)
return -1;
return dc->dc_paddr + offset;
}
int
ofb_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
void *v;
const struct wsscreen_descr *type;
void **cookiep;
int *curxp, *curyp;
long *attrp;
{
struct ofb_softc *sc = v;
long defattr;
if (sc->nscreens > 0)
return (ENOMEM);
*cookiep = &sc->sc_dc->dc_rcons; /* one and only for now */
*curxp = 0;
*curyp = 0;
rcons_alloc_attr(&sc->sc_dc->dc_rcons, 0, 0, 0, &defattr);
*attrp = defattr;
sc->nscreens++;
return 0;
}
void
ofb_free_screen(v, cookie)
void *v;
void *cookie;
{
struct ofb_softc *sc = v;
if (sc->sc_dc == &ofb_console_dc)
panic("ofb_free_screen: console");
sc->nscreens--;
}
void
ofb_show_screen(v, cookie)
void *v;
void *cookie;
{
}
static int
ofb_load_font(v, cookie, first, num, stride, data)
void *v;
void *cookie;
int first, num, stride;
void *data;
{
return EINVAL;
}
int
ofb_cnattach()
{
struct ofb_devconfig *dc = &ofb_console_dc;
long defattr;
int crow;
int chosen, stdout, node;
char cmd[32];
chosen = OF_finddevice("/chosen");
OF_getprop(chosen, "stdout", &stdout, sizeof(stdout));
node = OF_instance_to_package(stdout);
dc->dc_ih = stdout;
ofb_common_init(node, dc);
#if 0
/* get current cursor position */
OF_interpret("line#", 1, &crow);
/* move (rom monitor) cursor to the lowest line */
sprintf(cmd, "%x to line#", ofb_stdscreen.nrows - 1);
OF_interpret(cmd, 0);
#endif
rcons_alloc_attr(&dc->dc_rcons, 0, 0, 0, &defattr);
wsdisplay_cnattach(&ofb_stdscreen, &dc->dc_rcons, 0, 0, defattr);
return 0;
}
int
putcmap(sc, cm)
struct ofb_softc *sc;
struct wsdisplay_cmap *cm;
{
struct ofb_devconfig *dc = sc->sc_dc;
int index = cm->index;
int count = cm->count;
int i, s;
u_char *r, *g, *b;
if (cm->index >= 256 || cm->count > 256 ||
(cm->index + cm->count) > 256)
return EINVAL;
#if defined(UVM)
if (!uvm_useracc(cm->red, cm->count, B_READ) ||
!uvm_useracc(cm->green, cm->count, B_READ) ||
!uvm_useracc(cm->blue, cm->count, B_READ))
return EFAULT;
#else
if (!useracc(cm->red, cm->count, B_READ) ||
!useracc(cm->green, cm->count, B_READ) ||
!useracc(cm->blue, cm->count, B_READ))
return EFAULT;
#endif
copyin(cm->red, &sc->sc_cmap_red[index], count);
copyin(cm->green, &sc->sc_cmap_green[index], count);
copyin(cm->blue, &sc->sc_cmap_blue[index], count);
r = &sc->sc_cmap_red[index];
g = &sc->sc_cmap_green[index];
b = &sc->sc_cmap_blue[index];
s = splhigh();
asm volatile ("mtdbatl 3,%0; mtdbatu 3,%1"
:: "r"(BATL(dc->dc_paddr, BAT_I)), "r"(BATU(dc->dc_paddr)));
for (i = 0; i < count; i++) {
OF_call_method_1("color!", dc->dc_ih, 4, *r, *g, *b, index);
r++, g++, b++, index++;
}
splx(s);
return 0;
}