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|
/* $OpenBSD: vgafb.c,v 1.42 2005/07/17 17:13:38 miod Exp $ */
/*
* Copyright (c) 2001 Jason L. Wright (jason@thought.net)
* 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.
*
* Effort sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F30602-01-2-0537.
*
*/
#include <sys/param.h>
#include <sys/buf.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/pciio.h>
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <dev/pci/pcivar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wscons_raster.h>
#include <dev/rasops/rasops.h>
#include <machine/fbvar.h>
struct vgafb_softc {
struct sunfb sc_sunfb;
int sc_nscreens;
int sc_node, sc_ofhandle;
bus_space_tag_t sc_mem_t;
bus_space_tag_t sc_io_t;
pcitag_t sc_pcitag;
bus_space_handle_t sc_mem_h;
bus_addr_t sc_io_addr, sc_mem_addr, sc_mmio_addr;
bus_size_t sc_io_size, sc_mem_size, sc_mmio_size;
pci_chipset_tag_t sc_pci_chip;
int sc_has_rom;
int sc_console;
u_int sc_mode;
u_int8_t sc_cmap_red[256];
u_int8_t sc_cmap_green[256];
u_int8_t sc_cmap_blue[256];
int *sc_crowp, *sc_ccolp;
};
int vgafb_mapregs(struct vgafb_softc *, struct pci_attach_args *);
int vgafb_rommap(struct vgafb_softc *, struct pci_attach_args *);
int vgafb_ioctl(void *, u_long, caddr_t, int, struct proc *);
int vgafb_alloc_screen(void *, const struct wsscreen_descr *, void **,
int *, int *, long *);
void vgafb_free_screen(void *, void *);
int vgafb_show_screen(void *, void *, int,
void (*cb)(void *, int, int), void *);
paddr_t vgafb_mmap(void *, off_t, int);
int vgafb_is_console(int);
int vgafb_getcmap(struct vgafb_softc *, struct wsdisplay_cmap *);
int vgafb_putcmap(struct vgafb_softc *, struct wsdisplay_cmap *);
void vgafb_setcolor(void *, u_int, u_int8_t, u_int8_t, u_int8_t);
struct wsdisplay_accessops vgafb_accessops = {
vgafb_ioctl,
vgafb_mmap,
vgafb_alloc_screen,
vgafb_free_screen,
vgafb_show_screen,
0 /* load_font */
};
int vgafbmatch(struct device *, void *, void *);
void vgafbattach(struct device *, struct device *, void *);
struct cfattach vgafb_ca = {
sizeof (struct vgafb_softc), vgafbmatch, vgafbattach
};
struct cfdriver vgafb_cd = {
NULL, "vgafb", DV_DULL
};
int
vgafbmatch(parent, vcf, aux)
struct device *parent;
void *vcf, *aux;
{
struct pci_attach_args *pa = aux;
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_PREHISTORIC &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_PREHISTORIC_VGA)
return (1);
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_DISPLAY_VGA)
return (1);
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_DISPLAY_MISC)
return (1);
return (0);
}
void
vgafbattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct vgafb_softc *sc = (struct vgafb_softc *)self;
struct pci_attach_args *pa = aux;
sc->sc_mem_t = pa->pa_memt;
sc->sc_io_t = pa->pa_iot;
sc->sc_node = PCITAG_NODE(pa->pa_tag);
sc->sc_pcitag = pa->pa_tag;
printf("\n");
if (vgafb_mapregs(sc, pa))
return;
sc->sc_console = vgafb_is_console(sc->sc_node);
fb_setsize(&sc->sc_sunfb, 8, 1152, 900, sc->sc_node, 0);
if (sc->sc_sunfb.sf_depth == 24) {
sc->sc_sunfb.sf_depth = 32;
sc->sc_sunfb.sf_linebytes =
(sc->sc_sunfb.sf_depth / 8) * sc->sc_sunfb.sf_width;
sc->sc_sunfb.sf_fbsize =
sc->sc_sunfb.sf_height * sc->sc_sunfb.sf_linebytes;
}
sc->sc_sunfb.sf_ro.ri_bits = (void *)bus_space_vaddr(sc->sc_mem_t,
sc->sc_mem_h);
sc->sc_sunfb.sf_ro.ri_hw = sc;
fbwscons_init(&sc->sc_sunfb,
RI_BSWAP | (sc->sc_console ? 0 : RI_CLEAR));
if (sc->sc_console) {
sc->sc_ofhandle = OF_stdout();
fbwscons_setcolormap(&sc->sc_sunfb, vgafb_setcolor);
fbwscons_console_init(&sc->sc_sunfb, -1);
} else {
/* sc->sc_ofhandle = XXX */
}
fbwscons_attach(&sc->sc_sunfb, &vgafb_accessops, sc->sc_console);
}
int
vgafb_ioctl(v, cmd, data, flags, p)
void *v;
u_long cmd;
caddr_t data;
int flags;
struct proc *p;
{
struct vgafb_softc *sc = v;
struct wsdisplay_fbinfo *wdf;
struct pcisel *sel;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_UNKNOWN;
break;
case WSDISPLAYIO_SMODE:
sc->sc_mode = *(u_int *)data;
if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
if (sc->sc_console) /* XXX needs sc_ofhandle */
fbwscons_setcolormap(&sc->sc_sunfb,
vgafb_setcolor);
}
break;
case WSDISPLAYIO_GINFO:
wdf = (void *)data;
wdf->height = sc->sc_sunfb.sf_height;
wdf->width = sc->sc_sunfb.sf_width;
wdf->depth = sc->sc_sunfb.sf_depth;
wdf->cmsize = 256;
break;
case WSDISPLAYIO_LINEBYTES:
*(u_int *)data = sc->sc_sunfb.sf_linebytes;
break;
case WSDISPLAYIO_GETCMAP:
if (sc->sc_console == 0)
return (EINVAL);
return vgafb_getcmap(sc, (struct wsdisplay_cmap *)data);
case WSDISPLAYIO_PUTCMAP:
if (sc->sc_console == 0)
return (EINVAL);
return vgafb_putcmap(sc, (struct wsdisplay_cmap *)data);
case WSDISPLAYIO_GPCIID:
sel = (struct pcisel *)data;
sel->pc_bus = PCITAG_BUS(sc->sc_pcitag);
sel->pc_dev = PCITAG_DEV(sc->sc_pcitag);
sel->pc_func = PCITAG_FUN(sc->sc_pcitag);
break;
case WSDISPLAYIO_SVIDEO:
case WSDISPLAYIO_GVIDEO:
break;
case WSDISPLAYIO_GCURPOS:
case WSDISPLAYIO_SCURPOS:
case WSDISPLAYIO_GCURMAX:
case WSDISPLAYIO_GCURSOR:
case WSDISPLAYIO_SCURSOR:
default:
return -1; /* not supported yet */
}
return (0);
}
int
vgafb_getcmap(sc, cm)
struct vgafb_softc *sc;
struct wsdisplay_cmap *cm;
{
u_int index = cm->index;
u_int count = cm->count;
int error;
if (index >= 256 || count > 256 - index)
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);
}
int
vgafb_putcmap(sc, cm)
struct vgafb_softc *sc;
struct wsdisplay_cmap *cm;
{
u_int index = cm->index;
u_int count = cm->count;
u_int i;
int error;
u_char *r, *g, *b;
if (index >= 256 || count > 256 - index)
return (EINVAL);
if ((error = copyin(cm->red, &sc->sc_cmap_red[index], count)) != 0)
return (error);
if ((error = copyin(cm->green, &sc->sc_cmap_green[index], count)) != 0)
return (error);
if ((error = copyin(cm->blue, &sc->sc_cmap_blue[index], count)) != 0)
return (error);
r = &sc->sc_cmap_red[index];
g = &sc->sc_cmap_green[index];
b = &sc->sc_cmap_blue[index];
for (i = 0; i < count; i++) {
OF_call_method("color!", sc->sc_ofhandle, 4, 0, *r, *g, *b,
index);
r++, g++, b++, index++;
}
return (0);
}
void
vgafb_setcolor(v, index, r, g, b)
void *v;
u_int index;
u_int8_t r, g, b;
{
struct vgafb_softc *sc = v;
sc->sc_cmap_red[index] = r;
sc->sc_cmap_green[index] = g;
sc->sc_cmap_blue[index] = b;
OF_call_method("color!", sc->sc_ofhandle, 4, 0, r, g, b, index);
}
int
vgafb_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
void *v;
const struct wsscreen_descr *type;
void **cookiep;
int *curxp, *curyp;
long *attrp;
{
struct vgafb_softc *sc = v;
if (sc->sc_nscreens > 0)
return (ENOMEM);
*cookiep = &sc->sc_sunfb.sf_ro;
*curyp = 0;
*curxp = 0;
sc->sc_sunfb.sf_ro.ri_ops.alloc_attr(&sc->sc_sunfb.sf_ro,
WSCOL_BLACK, WSCOL_WHITE, WSATTR_WSCOLORS, attrp);
sc->sc_nscreens++;
return (0);
}
void
vgafb_free_screen(v, cookie)
void *v;
void *cookie;
{
struct vgafb_softc *sc = v;
sc->sc_nscreens--;
}
int
vgafb_show_screen(v, cookie, waitok, cb, cbarg)
void *v;
void *cookie;
int waitok;
void (*cb)(void *, int, int);
void *cbarg;
{
return (0);
}
paddr_t
vgafb_mmap(v, off, prot)
void *v;
off_t off;
int prot;
{
struct vgafb_softc *sc = v;
if (off & PGOFSET)
return (-1);
switch (sc->sc_mode) {
case WSDISPLAYIO_MODE_MAPPED:
if (off >= sc->sc_mem_addr &&
off < (sc->sc_mem_addr + sc->sc_mem_size))
return (bus_space_mmap(sc->sc_mem_t,
sc->sc_mem_addr, off - sc->sc_mem_addr,
prot, BUS_SPACE_MAP_LINEAR));
if (off >= sc->sc_mmio_addr &&
off < (sc->sc_mmio_addr + sc->sc_mmio_size))
return (bus_space_mmap(sc->sc_mem_t,
sc->sc_mmio_addr, off - sc->sc_mmio_addr,
prot, BUS_SPACE_MAP_LINEAR));
break;
case WSDISPLAYIO_MODE_DUMBFB:
if (off >= 0 && off < sc->sc_mem_size)
return (bus_space_mmap(sc->sc_mem_t, sc->sc_mem_addr,
off, prot, BUS_SPACE_MAP_LINEAR));
break;
}
return (-1);
}
int
vgafb_is_console(node)
int node;
{
extern int fbnode;
return (fbnode == node);
}
int
vgafb_mapregs(sc, pa)
struct vgafb_softc *sc;
struct pci_attach_args *pa;
{
bus_addr_t ba;
bus_size_t bs;
int hasio = 0, hasmem = 0, hasmmio = 0;
u_int32_t i, cf;
int rv;
for (i = PCI_MAPREG_START; i < PCI_MAPREG_END; i += 4) {
cf = pci_conf_read(pa->pa_pc, pa->pa_tag, i);
if (PCI_MAPREG_TYPE(cf) == PCI_MAPREG_TYPE_IO) {
if (hasio)
continue;
rv = pci_io_find(pa->pa_pc, pa->pa_tag, i,
&sc->sc_io_addr, &sc->sc_io_size);
if (rv != 0) {
if (rv != ENOENT)
printf("%s: failed to find io at 0x%x\n",
sc->sc_sunfb.sf_dev.dv_xname, i);
continue;
}
hasio = 1;
} else {
/* Memory mapping... frame memory or mmio? */
rv = pci_mem_find(pa->pa_pc, pa->pa_tag, i,
&ba, &bs, NULL);
if (rv != 0) {
if (rv != ENOENT)
printf("%s: failed to find mem at 0x%x\n",
sc->sc_sunfb.sf_dev.dv_xname, i);
continue;
}
if (bs <= 0x10000) { /* mmio */
if (hasmmio)
continue;
sc->sc_mmio_addr = ba;
sc->sc_mmio_size = bs;
hasmmio = 1;
} else {
if (hasmem)
continue;
if (bus_space_map(pa->pa_memt, ba, bs,
0, &sc->sc_mem_h)) {
printf("%s: can't map mem space\n",
sc->sc_sunfb.sf_dev.dv_xname);
continue;
}
sc->sc_mem_addr = ba;
sc->sc_mem_size = bs;
hasmem = 1;
}
}
}
if (hasmmio == 0 || hasmem == 0 || hasio == 0) {
printf("%s: failed to find all ports\n",
sc->sc_sunfb.sf_dev.dv_xname);
goto fail;
}
return (0);
fail:
if (hasmem)
bus_space_unmap(pa->pa_memt, sc->sc_mem_h, sc->sc_mem_size);
return (1);
}
|