File: [local] / sys / dev / sbus / agten.c (download)
Revision 1.1, Tue Mar 4 16:14:13 2008 UTC (16 years, 6 months ago) by nbrk
Branch point for: MAIN
Initial revision
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/* $OpenBSD: agten.c,v 1.7 2006/12/17 22:18:16 miod Exp $ */
/*
* Copyright (c) 2002, 2003, Miodrag Vallat.
* 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.
*
*/
/*
* Fujitsu AG-10 framebuffer driver.
*
* The AG-10 is mostly made of:
* - a 3DLabs 300SX Glint chip, with two 6MB independent framebuffer spaces
* - a Number Nine Imagine 128 chip with its own 4MB framebuffer space
* - a Weitek P9100 with its own 2MB of framebuffer memory
* - an IBM PaletteDAC 561 ramdac
* - an Analog Devices ADSP-21062
*
* All of these chips (memory, registers, etc) are mapped in the SBus
* memory space associated to the board. What is unexpected, however, is
* that there are also PCI registers mappings for the first three chips!
*
* The three graphics chips act as overlays of each other, for the final
* video output.
*
* The PROM initialization will use the I128 framebuffer memory for output,
* which is ``above'' the P9100. The P9100 seems to only be there to provide
* a simple RAMDAC interface, but its frame buffer memory is accessible and
* will appear as an ``underlay'' plane.
*/
/*
* TODO
* - initialize the I128 in 32bit mode
* - use the i128 acceleration features
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/tty.h>
#include <sys/conf.h>
#include <uvm/uvm_extern.h>
#include <machine/autoconf.h>
#include <machine/pmap.h>
#include <machine/cpu.h>
#include <machine/conf.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>
#include <machine/fbvar.h>
#include <dev/ic/p9000.h>
#include <dev/ic/ibm561reg.h>
#include <dev/sbus/sbusvar.h>
struct agten_cmap {
u_int8_t cm_red[256];
u_int8_t cm_green[256];
u_int8_t cm_blue[256];
};
/* per-display variables */
struct agten_softc {
struct sunfb sc_sunfb; /* common base part */
bus_space_tag_t sc_bustag;
bus_addr_t sc_paddr;
off_t sc_physoffset; /* offset for frame buffer */
volatile u_int8_t *sc_p9100;
struct agten_cmap sc_cmap; /* shadow color map */
volatile u_int32_t *sc_i128_fb;
int sc_nscreens;
};
int agten_ioctl(void *, u_long, caddr_t, int, struct proc *);
int agten_alloc_screen(void *, const struct wsscreen_descr *, void **,
int *, int *, long *);
void agten_free_screen(void *, void *);
int agten_show_screen(void *, void *, int, void (*cb)(void *, int, int),
void *);
paddr_t agten_mmap(void *, off_t, int);
void agten_reset(struct agten_softc *);
void agten_setcolor(void *, u_int, u_int8_t, u_int8_t, u_int8_t);
static __inline__ void ibm561_write(struct agten_softc *, u_int32_t, u_int32_t);
int agten_getcmap(struct agten_cmap *, struct wsdisplay_cmap *);
int agten_putcmap(struct agten_cmap *, struct wsdisplay_cmap *);
void agten_loadcmap(struct agten_softc *, u_int, u_int);
struct wsdisplay_accessops agten_accessops = {
agten_ioctl,
agten_mmap,
agten_alloc_screen,
agten_free_screen,
agten_show_screen,
NULL, /* load_font */
NULL, /* scrollback */
NULL, /* getchar */
NULL, /* burner */
};
int agtenmatch(struct device *, void *, void *);
void agtenattach(struct device *, struct device *, void *);
struct cfattach agten_ca = {
sizeof(struct agten_softc), agtenmatch, agtenattach
};
struct cfdriver agten_cd = {
NULL, "agten", DV_DULL
};
int
agtenmatch(struct device *parent, void *vcf, void *aux)
{
struct sbus_attach_args *sa = aux;
if (strcmp(sa->sa_name, "PFU,aga") != 0)
return (0);
return (1);
}
void
agtenattach(struct device *parent, struct device *self, void *args)
{
struct agten_softc *sc = (struct agten_softc *)self;
struct sbus_attach_args *sa = args;
bus_space_tag_t bt;
bus_space_handle_t bh;
int node, isconsole;
char *nam;
bt = sa->sa_bustag;
node = sa->sa_node;
nam = getpropstring(node, "model");
printf(": model %s", nam);
isconsole = node == fbnode;
/*
* Map the various beasts of this card we are interested in.
*/
sc->sc_bustag = bt;
sc->sc_paddr = sbus_bus_addr(bt, sa->sa_slot, sa->sa_offset);
sc->sc_physoffset =
(off_t)getpropint(node, "i128_fb_physaddr", 0x8000000);
if (sbus_bus_map(bt, sa->sa_slot, sa->sa_offset + sc->sc_physoffset,
getpropint(node, "i128_fb_size", 0x400000), BUS_SPACE_MAP_LINEAR,
0, &bh) != 0) {
printf("\n%s: couldn't map video memory\n", self->dv_xname);
return;
}
sc->sc_i128_fb = bus_space_vaddr(bt, bh);
if (sbus_bus_map(bt, sa->sa_slot, sa->sa_offset +
getpropint(node, "p9100_reg_physaddr", 0x10a0000), 0x4000,
BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) {
printf("\n%s: couldn't map control registers\n", self->dv_xname);
return;
}
sc->sc_p9100 = bus_space_vaddr(bt, bh);
/*
* For some reason the agten does not use the canonical name for
* properties, but uses an ffb_ prefix; and the linebytes property is
* missing.
* The following is a specific version of
* fb_setsize(&sc->sc_sunfb, 8, 1152, 900, node, BUS_SBUS);
* using the correct property names.
*/
#ifdef notyet
sc->sc_sunfb.sf_depth = 32;
#else
sc->sc_sunfb.sf_depth = getpropint(node, "ffb_depth", 8);
#endif
sc->sc_sunfb.sf_width = getpropint(node, "ffb_width", 1152);
sc->sc_sunfb.sf_height = getpropint(node, "ffb_height", 900);
sc->sc_sunfb.sf_linebytes =
roundup(sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_depth) *
sc->sc_sunfb.sf_depth / 8;
sc->sc_sunfb.sf_fbsize =
sc->sc_sunfb.sf_height * sc->sc_sunfb.sf_linebytes;
printf(", %dx%d, depth %d\n",
sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height,
sc->sc_sunfb.sf_depth);
sc->sc_sunfb.sf_ro.ri_bits = (void *)sc->sc_i128_fb;
sc->sc_sunfb.sf_ro.ri_hw = sc;
fbwscons_init(&sc->sc_sunfb, isconsole ? 0 : RI_CLEAR);
fbwscons_setcolormap(&sc->sc_sunfb, agten_setcolor);
if (isconsole) {
fbwscons_console_init(&sc->sc_sunfb, -1);
}
fbwscons_attach(&sc->sc_sunfb, &agten_accessops, isconsole);
}
int
agten_ioctl(dev, cmd, data, flags, p)
void *dev;
u_long cmd;
caddr_t data;
int flags;
struct proc *p;
{
struct agten_softc *sc = dev;
struct wsdisplay_cmap *cm;
struct wsdisplay_fbinfo *wdf;
int error;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_SUN24;
break;
case WSDISPLAYIO_GINFO:
wdf = (struct wsdisplay_fbinfo *)data;
wdf->height = sc->sc_sunfb.sf_height;
wdf->width = sc->sc_sunfb.sf_width;
wdf->depth = sc->sc_sunfb.sf_depth;
wdf->cmsize = (sc->sc_sunfb.sf_depth == 8) ? 256 : 0;
break;
case WSDISPLAYIO_LINEBYTES:
*(u_int *)data = sc->sc_sunfb.sf_linebytes;
break;
case WSDISPLAYIO_GETCMAP:
if (sc->sc_sunfb.sf_depth == 8) {
cm = (struct wsdisplay_cmap *)data;
error = agten_getcmap(&sc->sc_cmap, cm);
if (error)
return (error);
}
break;
case WSDISPLAYIO_PUTCMAP:
if (sc->sc_sunfb.sf_depth == 8) {
cm = (struct wsdisplay_cmap *)data;
error = agten_putcmap(&sc->sc_cmap, cm);
if (error)
return (error);
agten_loadcmap(sc, 0, 256);
}
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);
}
/*
* Return the address that would map the given device at the given
* offset, allowing for the given protection, or return -1 for error.
*/
paddr_t
agten_mmap(v, offset, prot)
void *v;
off_t offset;
int prot;
{
struct agten_softc *sc = v;
if (offset & PGOFSET)
return (-1);
/* Allow mapping as a dumb framebuffer from offset 0 */
if (offset >= 0 && offset < sc->sc_sunfb.sf_fbsize) {
return (bus_space_mmap(sc->sc_bustag, sc->sc_paddr,
sc->sc_physoffset + offset, prot, BUS_SPACE_MAP_LINEAR));
}
return (-1); /* not a user-map offset */
}
void
agten_setcolor(v, index, r, g, b)
void *v;
u_int index;
u_int8_t r, g, b;
{
struct agten_softc *sc = v;
sc->sc_cmap.cm_red[index] = r;
sc->sc_cmap.cm_green[index] = g;
sc->sc_cmap.cm_blue[index] = b;
agten_loadcmap(sc, index, 1);
}
int
agten_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
void *v;
const struct wsscreen_descr *type;
void **cookiep;
int *curxp, *curyp;
long *attrp;
{
struct agten_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
agten_free_screen(v, cookie)
void *v;
void *cookie;
{
struct agten_softc *sc = v;
sc->sc_nscreens--;
}
int
agten_show_screen(v, cookie, waitok, cb, cbarg)
void *v;
void *cookie;
int waitok;
void (*cb)(void *, int, int);
void *cbarg;
{
return (0);
}
int
agten_getcmap(struct agten_cmap *cm, struct wsdisplay_cmap *rcm)
{
u_int index = rcm->index, count = rcm->count;
int error;
if (index >= 256 || count > 256 - index)
return (EINVAL);
if ((error = copyout(&cm->cm_red[index], rcm->red, count)) != 0)
return (error);
if ((error = copyout(&cm->cm_green[index], rcm->green, count)) != 0)
return (error);
if ((error = copyout(&cm->cm_blue[index], rcm->blue, count)) != 0)
return (error);
return (0);
}
int
agten_putcmap(struct agten_cmap *cm, struct wsdisplay_cmap *rcm)
{
u_int index = rcm->index, count = rcm->count;
int error;
if (index >= 256 || count > 256 - index)
return (EINVAL);
if ((error = copyin(rcm->red, &cm->cm_red[index], count)) != 0)
return (error);
if ((error = copyin(rcm->green, &cm->cm_green[index], count)) != 0)
return (error);
if ((error = copyin(rcm->blue, &cm->cm_blue[index], count)) != 0)
return (error);
return (0);
}
static __inline__ void
ibm561_write(struct agten_softc *sc, u_int32_t reg, u_int32_t value)
{
/*
* For some design reason the IBM561 PaletteDac needs to be fed
* values shifted left by 16 bits. What happened to simplicity?
*/
*(volatile u_int32_t *)(sc->sc_p9100 + P9100_RAMDAC_REGISTER(reg)) =
(value) << 16;
}
void
agten_loadcmap(struct agten_softc *sc, u_int start, u_int ncolors)
{
int i;
u_int8_t *red, *green, *blue;
ibm561_write(sc, IBM561_ADDR_LOW,
(IBM561_CMAP_TABLE + start) & 0xff);
ibm561_write(sc, IBM561_ADDR_HIGH,
((IBM561_CMAP_TABLE + start) >> 8) & 0xff);
red = sc->sc_cmap.cm_red;
green = sc->sc_cmap.cm_green;
blue = sc->sc_cmap.cm_blue;
for (i = start; i < start + ncolors; i++) {
ibm561_write(sc, IBM561_CMD_CMAP, *red++);
ibm561_write(sc, IBM561_CMD_CMAP, *green++);
ibm561_write(sc, IBM561_CMD_CMAP, *blue++);
}
}