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/*
* 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.
*
* Copyright (c) 2000 Andrew Miklic, Andrew Gallatin, and Thomas V. Crimi
*/
#include "opt_fb.h"
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/fbio.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <machine/md_var.h>
#include <machine/pc/bios.h>
#include <machine/clock.h>
#include <machine/bus_memio.h>
#include <machine/bus.h>
#include <machine/pc/vesa.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <dev/fb/fbreg.h>
#include <dev/fb/tga.h>
#include <dev/tga/tga_pci.h>
#include <dev/fb/gfb.h>
#include <dev/gfb/gfb_pci.h>
static int tga_probe(device_t);
static int tga_attach(device_t);
static void tga_intr(void *);
static device_method_t tga_methods[] = {
DEVMETHOD(device_probe, tga_probe),
DEVMETHOD(device_attach, tga_attach),
DEVMETHOD(device_detach, pcigfb_detach),
{ 0, 0 }
};
static driver_t tga_driver = {
"tga",
tga_methods,
sizeof(struct gfb_softc)
};
static devclass_t tga_devclass;
DRIVER_MODULE(tga, pci, tga_driver, tga_devclass, 0, 0);
static struct gfb_type tga_devs[] = {
{ DEC_VENDORID, DEC_DEVICEID_TGA,
"DEC TGA (21030) 2D Graphics Accelerator" },
{ DEC_VENDORID, DEC_DEVICEID_TGA2,
"DEC TGA2 (21130) 3D Graphics Accelerator" },
{ 0, 0, NULL }
};
#ifdef FB_INSTALL_CDEV
static struct cdevsw tga_cdevsw = {
/* open */ pcigfb_open,
/* close */ pcigfb_close,
/* read */ pcigfb_read,
/* write */ pcigfb_write,
/* ioctl */ pcigfb_ioctl,
/* poll */ nopoll,
/* mmap */ pcigfb_mmap,
/* strategy */ nostrategy,
/* name */ "tga",
/* maj */ -1,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
/* kqfilter */ nokqfilter
};
#endif /* FB_INSTALL_CDEV */
static int
tga_probe(device_t dev)
{
int error;
gfb_type_t t;
t = tga_devs;
error = ENXIO;
while(t->name != NULL) {
if((pci_get_vendor(dev) == t->vendor_id) &&
(pci_get_device(dev) == t->device_id)) {
device_set_desc(dev, t->name);
error = 0;
break;
}
t++;
}
return(error);
}
static int
tga_attach(device_t dev)
{
gfb_softc_t sc;
int unit, error, rid;
error = 0;
unit = device_get_unit(dev);
sc = device_get_softc(dev);
sc->driver_name = TGA_DRIVER_NAME;
switch(pci_get_device(dev)) {
case DEC_DEVICEID_TGA2:
sc->model = 1;
sc->type = KD_TGA2;
break;
case DEC_DEVICEID_TGA:
sc->model = 0;
sc->type = KD_TGA;
break;
default:
device_printf(dev, "Unrecognized TGA type\n");
goto fail;
}
if((error = pcigfb_attach(dev))) {
goto fail;
}
sc->regs = sc->bhandle + TGA_MEM_CREGS;
error = bus_setup_intr(dev, sc->irq, INTR_TYPE_TTY, tga_intr, sc,
&sc->intrhand);
if(error) {
device_printf(dev, "couldn't set up irq\n");
goto fail;
}
switch(sc->rev) {
case 0x1:
case 0x2:
case 0x3:
device_printf(dev, "TGA (21030) step %c\n", 'A' + sc->rev - 1);
break;
case 0x20:
device_printf(dev, "TGA2 (21130) abstract software model\n");
break;
case 0x21:
case 0x22:
device_printf(dev, "TGA2 (21130) pass %d\n", sc->rev - 0x20);
break;
default:
device_printf(dev, "Unknown stepping (0x%x)\n", sc->rev);
break;
}
#ifdef FB_INSTALL_CDEV
sc->cdevsw = &tga_cdevsw;
sc->devt = make_dev(sc->cdevsw, unit, UID_ROOT, GID_WHEEL, 0600,
"tga%x", unit);
#endif /* FB_INSTALL_CDEV */
goto done;
fail:
if(sc->intrhand != NULL) {
bus_teardown_intr(dev, sc->irq, sc->intrhand);
sc->intrhand = NULL;
}
if(sc->irq != NULL) {
rid = 0x0;
bus_release_resource(dev, SYS_RES_IRQ, rid, sc->irq);
sc->irq = NULL;
}
if(sc->res != NULL) {
rid = GFB_MEM_BASE_RID;
bus_release_resource(dev, SYS_RES_MEMORY, rid, sc->res);
sc->res = NULL;
}
error = ENXIO;
done:
return(error);
}
static void
tga_intr(void *v)
{
struct gfb_softc *sc = (struct gfb_softc *)v;
u_int32_t reg;
reg = READ_GFB_REGISTER(sc->adp, TGA_REG_SISR);
if((reg & 0x00010001) != 0x00010001) {
/* Odd. We never set any of the other interrupt enables. */
if((reg & 0x1f) != 0) {
/* Clear the mysterious pending interrupts. */
WRITE_GFB_REGISTER(sc->adp, TGA_REG_SISR, (reg & 0x1f));
GFB_REGISTER_WRITE_BARRIER(sc, TGA_REG_SISR, 1);
/* This was our interrupt, even if we're puzzled as to
* why we got it. Don't make the interrupt handler
* think it was a stray.
*/
}
}
/* Call the scheduled handler... */
sc->gfbc->ramdac_intr(sc);
/*
Clear interrupt field (this way, we will force a
memory error if we get an unexpected interrupt)...
*/
sc->gfbc->ramdac_intr = NULL;
/* Disable the interrupt... */
WRITE_GFB_REGISTER(sc->adp, TGA_REG_SISR, 0x00000001);
GFB_REGISTER_WRITE_BARRIER(sc, TGA_REG_SISR, 1);
}
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