NetBSD/sys/arch/alpha/pci/tga.c

571 lines
14 KiB
C

/* $NetBSD: tga.c,v 1.10 1996/10/13 03:00:22 christos 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/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <machine/tgareg.h>
#include <alpha/pci/tgavar.h>
#include <alpha/pci/bt485reg.h>
#include <dev/rcons/raster.h>
#include <alpha/wscons/wscons_raster.h>
#include <alpha/wscons/wsconsvar.h>
#include <machine/fbio.h>
#include <machine/autoconf.h>
#include <machine/pte.h>
int tgamatch __P((struct device *, void *, void *));
void tgaattach __P((struct device *, struct device *, void *));
int tgaprint __P((void *, const char *));
struct cfattach tga_ca = {
sizeof(struct tga_softc), tgamatch, tgaattach,
};
struct cfdriver tga_cd = {
NULL, "tga", DV_DULL,
};
int tga_identify __P((tga_reg_t *));
const struct tga_conf *tga_getconf __P((int));
void tga_getdevconfig __P((bus_chipset_tag_t bc, pci_chipset_tag_t pc,
pcitag_t tag, struct tga_devconfig *dc));
struct tga_devconfig tga_console_dc;
struct wscons_emulfuncs tga_emulfuncs = {
rcons_cursor, /* could use hardware cursor; punt */
rcons_putstr,
rcons_copycols,
rcons_erasecols,
rcons_copyrows,
rcons_eraserows,
};
int tgaioctl __P((struct device *, u_long, caddr_t, int, struct proc *));
int tgammap __P((struct device *, off_t, int));
void tga_blank __P((struct tga_devconfig *));
void tga_unblank __P((struct tga_devconfig *));
int
tgamatch(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct pci_attach_args *pa = aux;
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_DEC ||
PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_DEC_21030)
return (0);
return (10);
}
void
tga_getdevconfig(bc, pc, tag, dc)
bus_chipset_tag_t bc;
pci_chipset_tag_t pc;
pcitag_t tag;
struct tga_devconfig *dc;
{
const struct tga_conf *tgac;
const struct tga_ramdac_conf *tgar;
struct raster *rap;
struct rcons *rcp;
bus_mem_size_t pcisize;
int i, cacheable;
dc->dc_bc = bc;
dc->dc_pc = pc;
dc->dc_pcitag = tag;
/* XXX MAGIC NUMBER */
pci_mem_find(pc, tag, 0x10, &dc->dc_pcipaddr, &pcisize,
&cacheable);
if (!cacheable) /* sanity */
panic("tga_getdevconfig: memory not cacheable?");
/* XXX XXX XXX */
if (bus_mem_map(bc, dc->dc_pcipaddr, pcisize, 1, &dc->dc_vaddr))
return;
dc->dc_paddr = ALPHA_K0SEG_TO_PHYS(dc->dc_vaddr); /* XXX */
dc->dc_regs = (tga_reg_t *)(dc->dc_vaddr + TGA_MEM_CREGS);
dc->dc_tga_type = tga_identify(dc->dc_regs);
tgac = dc->dc_tgaconf = tga_getconf(dc->dc_tga_type);
if (tgac == NULL)
return;
#if 0
/* XXX on the Alpha, pcisize = 4 * cspace_size. */
if (tgac->tgac_cspace_size != pcisize) /* sanity */
panic("tga_getdevconfig: memory size mismatch?");
#endif
tgar = tgac->tgac_ramdac;
switch (dc->dc_regs[TGA_REG_VHCR] & 0x1ff) { /* XXX */
case 0:
dc->dc_wid = 8192;
break;
case 1:
dc->dc_wid = 8196;
break;
default:
dc->dc_wid = (dc->dc_regs[TGA_REG_VHCR] & 0x1ff) * 4; /* XXX */
break;
}
dc->dc_rowbytes = dc->dc_wid * (dc->dc_tgaconf->tgac_phys_depth / 8);
if ((dc->dc_regs[TGA_REG_VHCR] & 0x00000001) != 0 && /* XXX */
(dc->dc_regs[TGA_REG_VHCR] & 0x80000000) != 0) { /* XXX */
dc->dc_wid -= 4;
/*
* XXX XXX turning off 'odd' shouldn't be necesssary,
* XXX XXX but i can't make X work with the weird size.
*/
dc->dc_regs[TGA_REG_VHCR] &= ~0x80000001;
dc->dc_rowbytes =
dc->dc_wid * (dc->dc_tgaconf->tgac_phys_depth / 8);
}
dc->dc_ht = (dc->dc_regs[TGA_REG_VVCR] & 0x7ff); /* XXX */
/* XXX this seems to be what DEC does */
dc->dc_regs[TGA_REG_CCBR] = 0;
dc->dc_regs[TGA_REG_VVBR] = 1;
dc->dc_videobase = dc->dc_vaddr + tgac->tgac_dbuf[0] +
1 * tgac->tgac_vvbr_units;
dc->dc_blanked = 1;
tga_unblank(dc);
/*
* Set all bits in the pixel mask, to enable writes to all pixels.
* It seems that the console firmware clears some of them
* under some circumstances, which causes cute vertical stripes.
*/
dc->dc_regs[TGA_REG_GPXR_P] = 0xffffffff;
/* clear the screen */
for (i = 0; i < dc->dc_ht * dc->dc_rowbytes; i += sizeof(u_int32_t))
*(u_int32_t *)(dc->dc_videobase + i) = 0;
/* initialize the raster */
rap = &dc->dc_raster;
rap->width = dc->dc_wid;
rap->height = dc->dc_ht;
rap->depth = tgac->tgac_phys_depth;
rap->linelongs = dc->dc_rowbytes / sizeof(u_int32_t);
rap->pixels = (u_int32_t *)dc->dc_videobase;
/* 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, 34, 80);
}
void
tgaattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct pci_attach_args *pa = aux;
struct tga_softc *sc = (struct tga_softc *)self;
struct wscons_attach_args waa;
struct wscons_odev_spec *wo;
pci_intr_handle_t intrh;
const char *intrstr;
u_int8_t rev;
int console;
console = (pa->pa_tag == tga_console_dc.dc_pcitag);
if (console)
sc->sc_dc = &tga_console_dc;
else {
sc->sc_dc = (struct tga_devconfig *)
malloc(sizeof(struct tga_devconfig), M_DEVBUF, M_WAITOK);
tga_getdevconfig(pa->pa_bc, pa->pa_pc, pa->pa_tag, sc->sc_dc);
}
if (sc->sc_dc->dc_vaddr == NULL) {
printf(": couldn't map memory space; punt!\n");
return;
}
/* XXX say what's going on. */
intrstr = NULL;
if (sc->sc_dc->dc_tgaconf->tgac_ramdac->tgar_intr != NULL) {
if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
pa->pa_intrline, &intrh)) {
printf(": couldn't map interrupt");
return;
}
intrstr = pci_intr_string(pa->pa_pc, intrh);
sc->sc_intr = pci_intr_establish(pa->pa_pc, intrh, IPL_TTY,
sc->sc_dc->dc_tgaconf->tgac_ramdac->tgar_intr, sc->sc_dc);
if (sc->sc_intr == NULL) {
printf(": couldn't establish interrupt");
if (intrstr != NULL)
printf("at %s", intrstr);
printf("\n");
return;
}
}
/*
* Initialize the RAMDAC and allocate any private storage it needs.
* Initialization includes disabling cursor, setting a sane
* colormap, etc.
*/
(*sc->sc_dc->dc_tgaconf->tgac_ramdac->tgar_init)(sc->sc_dc, 1);
printf(": DC21030 ");
rev = PCI_REVISION(pa->pa_class);
switch (rev) {
case 1: case 2: case 3:
printf("step %c", 'A' + rev - 1);
break;
default:
printf("unknown stepping (0x%x)", rev);
break;
}
printf(", ");
if (sc->sc_dc->dc_tgaconf == NULL) {
printf("unknown board configuration\n");
return;
}
printf("board type %s\n", sc->sc_dc->dc_tgaconf->tgac_name);
printf("%s: %d x %d, %dbpp, %s RAMDAC\n", sc->sc_dev.dv_xname,
sc->sc_dc->dc_wid, sc->sc_dc->dc_ht,
sc->sc_dc->dc_tgaconf->tgac_phys_depth,
sc->sc_dc->dc_tgaconf->tgac_ramdac->tgar_name);
if (intrstr != NULL)
printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname,
intrstr);
waa.waa_isconsole = console;
wo = &waa.waa_odev_spec;
wo->wo_ef = &tga_emulfuncs;
wo->wo_efa = &sc->sc_dc->dc_rcons;
wo->wo_nrows = sc->sc_dc->dc_rcons.rc_maxrow;
wo->wo_ncols = sc->sc_dc->dc_rcons.rc_maxcol;
wo->wo_crow = 0;
wo->wo_ccol = 0;
wo->wo_ioctl = tgaioctl;
wo->wo_mmap = tgammap;
config_found(self, &waa, tgaprint);
}
int
tgaprint(aux, pnp)
void *aux;
const char *pnp;
{
if (pnp)
printf("wscons at %s", pnp);
return (UNCONF);
}
int
tgaioctl(dev, cmd, data, flag, p)
struct device *dev;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
struct tga_softc *sc = (struct tga_softc *)dev;
struct tga_devconfig *dc = sc->sc_dc;
const struct tga_ramdac_conf *tgar = dc->dc_tgaconf->tgac_ramdac;
switch (cmd) {
case FBIOGTYPE:
#define fbt ((struct fbtype *)data)
fbt->fb_type = FBTYPE_TGA;
fbt->fb_height = sc->sc_dc->dc_ht;
fbt->fb_width = sc->sc_dc->dc_wid;
fbt->fb_depth = sc->sc_dc->dc_tgaconf->tgac_phys_depth;
fbt->fb_cmsize = 256; /* XXX ??? */
fbt->fb_size = sc->sc_dc->dc_tgaconf->tgac_cspace_size;
#undef fbt
return (0);
case FBIOPUTCMAP:
return (*tgar->tgar_set_cmap)(dc, (struct fbcmap *)data);
case FBIOGETCMAP:
return (*tgar->tgar_get_cmap)(dc, (struct fbcmap *)data);
case FBIOGATTR:
return (ENOTTY); /* XXX ? */
case FBIOSVIDEO:
if (*(int *)data == FBVIDEO_OFF)
tga_blank(sc->sc_dc);
else
tga_unblank(sc->sc_dc);
return (0);
case FBIOGVIDEO:
*(int *)data = dc->dc_blanked ? FBVIDEO_OFF : FBVIDEO_ON;
return (0);
case FBIOSCURSOR:
return (*tgar->tgar_set_cursor)(dc, (struct fbcursor *)data);
case FBIOGCURSOR:
return (*tgar->tgar_get_cursor)(dc, (struct fbcursor *)data);
case FBIOSCURPOS:
return (*tgar->tgar_set_curpos)(dc, (struct fbcurpos *)data);
case FBIOGCURPOS:
return (*tgar->tgar_get_curpos)(dc, (struct fbcurpos *)data);
case FBIOGCURMAX:
return (*tgar->tgar_get_curmax)(dc, (struct fbcurpos *)data);
}
return (-1);
}
int
tgammap(dev, offset, prot)
struct device *dev;
off_t offset;
int prot;
{
struct tga_softc *sc = (struct tga_softc *)dev;
if (offset > sc->sc_dc->dc_tgaconf->tgac_cspace_size)
return -1;
return alpha_btop(sc->sc_dc->dc_paddr + offset);
}
void
tga_console(bc, pc, bus, device, function)
bus_chipset_tag_t bc;
pci_chipset_tag_t pc;
int bus, device, function;
{
struct tga_devconfig *dcp = &tga_console_dc;
struct wscons_odev_spec wo;
tga_getdevconfig(bc, pc, pci_make_tag(pc, bus, device, function), dcp);
/* sanity checks */
if (dcp->dc_vaddr == NULL)
panic("tga_console(%d, %d): couldn't map memory space",
device, function);
if (dcp->dc_tgaconf == NULL)
panic("tga_console(%d, %d): unknown board configuration",
device, function);
/*
* Initialize the RAMDAC but DO NOT allocate any private storage.
* Initialization includes disabling cursor, setting a sane
* colormap, etc. It will be reinitialized in tgaattach().
*/
(*dcp->dc_tgaconf->tgac_ramdac->tgar_init)(dcp, 0);
wo.wo_ef = &tga_emulfuncs;
wo.wo_efa = &dcp->dc_rcons;
wo.wo_nrows = dcp->dc_rcons.rc_maxrow;
wo.wo_ncols = dcp->dc_rcons.rc_maxcol;
wo.wo_crow = 0;
wo.wo_ccol = 0;
/* ioctl and mmap are unused until real attachment. */
wscons_attach_console(&wo);
}
/*
* Functions to blank and unblank the display.
*/
void
tga_blank(dc)
struct tga_devconfig *dc;
{
if (!dc->dc_blanked) {
dc->dc_blanked = 1;
dc->dc_regs[TGA_REG_VVVR] |= 0x02; /* XXX */
}
}
void
tga_unblank(dc)
struct tga_devconfig *dc;
{
if (dc->dc_blanked) {
dc->dc_blanked = 0;
dc->dc_regs[TGA_REG_VVVR] &= ~0x02; /* XXX */
}
}
/*
* Functions to manipulate the built-in cursor handing hardware.
*/
int
tga_builtin_set_cursor(dc, fbc)
struct tga_devconfig *dc;
struct fbcursor *fbc;
{
int v;
#if 0
int count;
#endif
v = fbc->set;
#if 0
if (v & FB_CUR_SETCMAP) /* XXX should be supported */
return EINVAL;
if (v & FB_CUR_SETSHAPE) {
if ((u_int)fbc->size.x != 64 || (u_int)fbc->size.y > 64)
return (EINVAL);
/* The cursor is 2 bits deep, and there is no mask */
count = (fbc->size.y * 64 * 2) / NBBY;
if (!useracc(fbc->image, count, B_READ))
return (EFAULT);
}
if (v & FB_CUR_SETHOT) /* not supported */
return EINVAL;
#endif
/* parameters are OK; do it */
if (v & FB_CUR_SETCUR) {
if (fbc->enable)
dc->dc_regs[TGA_REG_VVVR] |= 0x04; /* XXX */
else
dc->dc_regs[TGA_REG_VVVR] &= ~0x04; /* XXX */
}
#if 0
if (v & FB_CUR_SETPOS) {
dc->dc_regs[TGA_REG_CXYR] =
((fbc->pos.y & 0xfff) << 12) | (fbc->pos.x & 0xfff);
}
if (v & FB_CUR_SETCMAP) {
/* XXX */
}
if (v & FB_CUR_SETSHAPE) {
dc->dc_regs[TGA_REG_CCBR] =
(dc->dc_regs[TGA_REG_CCBR] & ~0xfc00) | (fbc->size.y << 10);
copyin(fbc->image, (char *)(dc->dc_vaddr +
(dc->dc_regs[TGA_REG_CCBR] & 0x3ff)),
count); /* can't fail. */
}
#endif
return (0);
}
int
tga_builtin_get_cursor(dc, fbc)
struct tga_devconfig *dc;
struct fbcursor *fbc;
{
int count, error;
fbc->set = FB_CUR_SETALL & ~(FB_CUR_SETHOT | FB_CUR_SETCMAP);
fbc->enable = (dc->dc_regs[TGA_REG_VVVR] & 0x04) != 0;
fbc->pos.x = dc->dc_regs[TGA_REG_CXYR] & 0xfff;
fbc->pos.y = (dc->dc_regs[TGA_REG_CXYR] >> 12) & 0xfff;
fbc->size.x = 64;
fbc->size.y = (dc->dc_regs[TGA_REG_CCBR] >> 10) & 0x3f;
if (fbc->image != NULL) {
count = (fbc->size.y * 64 * 2) / NBBY;
error = copyout((char *)(dc->dc_vaddr +
(dc->dc_regs[TGA_REG_CCBR] & 0x3ff)),
fbc->image, count);
if (error)
return (error);
/* No mask */
}
/* XXX No color map */
return (0);
}
int
tga_builtin_set_curpos(dc, fbp)
struct tga_devconfig *dc;
struct fbcurpos *fbp;
{
dc->dc_regs[TGA_REG_CXYR] =
((fbp->y & 0xfff) << 12) | (fbp->x & 0xfff);
return (0);
}
int
tga_builtin_get_curpos(dc, fbp)
struct tga_devconfig *dc;
struct fbcurpos *fbp;
{
fbp->x = dc->dc_regs[TGA_REG_CXYR] & 0xfff;
fbp->y = (dc->dc_regs[TGA_REG_CXYR] >> 12) & 0xfff;
return (0);
}
int
tga_builtin_get_curmax(dc, fbp)
struct tga_devconfig *dc;
struct fbcurpos *fbp;
{
fbp->x = fbp->y = 64;
return (0);
}