NetBSD/sys/dev/pci/tga.c

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/* $NetBSD: tga.c,v 1.14 1999/04/28 23:24:33 ross 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/conf.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/ioctl.h>
#include <vm/vm.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 <dev/pci/tgareg.h>
#include <dev/pci/tgavar.h>
#include <dev/ic/bt485reg.h>
#include <dev/rcons/raster.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wscons_raster.h>
#include <dev/wscons/wsdisplayvar.h>
#ifdef __alpha__
#include <machine/pte.h>
#endif
int tgamatch __P((struct device *, struct cfdata *, 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,
};
int tga_identify __P((tga_reg_t *));
const struct tga_conf *tga_getconf __P((int));
void tga_getdevconfig __P((bus_space_tag_t memt, pci_chipset_tag_t pc,
pcitag_t tag, struct tga_devconfig *dc));
struct tga_devconfig tga_console_dc;
int tga_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
int tga_mmap __P((void *, off_t, int));
static void tga_copyrows __P((void *, int, int, int));
static void tga_copycols __P((void *, int, int, int, int));
static int tga_alloc_screen __P((void *, const struct wsscreen_descr *,
void **, int *, int *, long *));
static void tga_free_screen __P((void *, void *));
static void tga_show_screen __P((void *, void *));
static int tga_rop __P((struct raster *, int, int, int, int, int,
struct raster *, int, int));
static int tga_rop_nosrc __P((struct raster *, int, int, int, int, int));
static int tga_rop_htov __P((struct raster *, int, int, int, int,
int, struct raster *, int, int ));
static int tga_rop_vtov __P((struct raster *, int, int, int, int,
int, struct raster *, int, int ));
struct wsdisplay_emulops tga_emulops = {
rcons_cursor, /* could use hardware cursor; punt */
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rcons_mapchar,
rcons_putchar,
tga_copycols,
rcons_erasecols,
tga_copyrows,
rcons_eraserows,
rcons_alloc_attr
};
struct wsscreen_descr tga_stdscreen = {
"std",
0, 0, /* will be filled in -- XXX shouldn't, it's global */
&tga_emulops,
0, 0,
WSSCREEN_REVERSE
};
const struct wsscreen_descr *_tga_scrlist[] = {
&tga_stdscreen,
/* XXX other formats, graphics screen? */
};
struct wsscreen_list tga_screenlist = {
sizeof(_tga_scrlist) / sizeof(struct wsscreen_descr *), _tga_scrlist
};
struct wsdisplay_accessops tga_accessops = {
tga_ioctl,
tga_mmap,
tga_alloc_screen,
tga_free_screen,
tga_show_screen,
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0 /* load_font */
};
void tga_blank __P((struct tga_devconfig *));
void tga_unblank __P((struct tga_devconfig *));
int
tgamatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *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(memt, pc, tag, dc)
bus_space_tag_t memt;
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_size_t pcisize;
int i, flags;
dc->dc_memt = memt;
dc->dc_pc = pc;
dc->dc_pcitag = tag;
/* XXX magic number */
if (pci_mapreg_info(pc, tag, 0x10,
PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT,
&dc->dc_pcipaddr, &pcisize, &flags))
return;
if ((flags & BUS_SPACE_MAP_CACHEABLE) == 0) /* XXX */
panic("tga memory not cacheable");
if (bus_space_map(memt, dc->dc_pcipaddr, pcisize,
BUS_SPACE_MAP_CACHEABLE | BUS_SPACE_MAP_LINEAR, &dc->dc_vaddr))
return;
#ifdef __alpha__
dc->dc_paddr = ALPHA_K0SEG_TO_PHYS(dc->dc_vaddr); /* XXX */
#endif
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;
rap->data = (caddr_t)dc;
/* 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);
tga_stdscreen.nrows = dc->dc_rcons.rc_maxrow;
tga_stdscreen.ncols = dc->dc_rcons.rc_maxcol;
}
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 wsemuldisplaydev_attach_args aa;
pci_intr_handle_t intrh;
const char *intrstr;
u_int8_t rev;
int console;
#ifdef __alpha__
console = (pa->pa_tag == tga_console_dc.dc_pcitag);
#else
console = 0;
#endif
if (console) {
sc->sc_dc = &tga_console_dc;
sc->nscreens = 1;
} else {
sc->sc_dc = (struct tga_devconfig *)
malloc(sizeof(struct tga_devconfig), M_DEVBUF, M_WAITOK);
bzero(sc->sc_dc, sizeof(struct tga_devconfig));
tga_getdevconfig(pa->pa_memt, 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);
aa.console = console;
aa.scrdata = &tga_screenlist;
aa.accessops = &tga_accessops;
aa.accesscookie = sc;
config_found(self, &aa, wsemuldisplaydevprint);
}
int
tga_ioctl(v, cmd, data, flag, p)
void *v;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
struct tga_softc *sc = v;
struct tga_devconfig *dc = sc->sc_dc;
const struct tga_ramdac_conf *tgar = dc->dc_tgaconf->tgac_ramdac;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_TGA;
return (0);
case WSDISPLAYIO_GINFO:
#define wsd_fbip ((struct wsdisplay_fbinfo *)data)
wsd_fbip->height = sc->sc_dc->dc_ht;
wsd_fbip->width = sc->sc_dc->dc_wid;
wsd_fbip->depth = sc->sc_dc->dc_tgaconf->tgac_phys_depth;
wsd_fbip->cmsize = 256; /* XXX ??? */
#undef wsd_fbip
return (0);
case WSDISPLAYIO_GETCMAP:
return (*tgar->tgar_get_cmap)(dc,
(struct wsdisplay_cmap *)data);
case WSDISPLAYIO_PUTCMAP:
return (*tgar->tgar_set_cmap)(dc,
(struct wsdisplay_cmap *)data);
case WSDISPLAYIO_SVIDEO:
if (*(u_int *)data == WSDISPLAYIO_VIDEO_OFF)
tga_blank(sc->sc_dc);
else
tga_unblank(sc->sc_dc);
return (0);
case WSDISPLAYIO_GVIDEO:
*(u_int *)data = dc->dc_blanked ?
WSDISPLAYIO_VIDEO_OFF : WSDISPLAYIO_VIDEO_ON;
return (0);
case WSDISPLAYIO_GCURPOS:
return (*tgar->tgar_get_curpos)(dc,
(struct wsdisplay_curpos *)data);
case WSDISPLAYIO_SCURPOS:
return (*tgar->tgar_set_curpos)(dc,
(struct wsdisplay_curpos *)data);
case WSDISPLAYIO_GCURMAX:
return (*tgar->tgar_get_curmax)(dc,
(struct wsdisplay_curpos *)data);
case WSDISPLAYIO_GCURSOR:
return (*tgar->tgar_get_cursor)(dc,
(struct wsdisplay_cursor *)data);
case WSDISPLAYIO_SCURSOR:
return (*tgar->tgar_set_cursor)(dc,
(struct wsdisplay_cursor *)data);
}
return (-1);
}
int
tga_mmap(v, offset, prot)
void *v;
off_t offset;
int prot;
{
/* XXX NEW MAPPING CODE... */
#ifdef __alpha__
struct tga_softc *sc = v;
if (offset >= sc->sc_dc->dc_tgaconf->tgac_cspace_size || offset < 0)
return -1;
return alpha_btop(sc->sc_dc->dc_paddr + offset);
#else
return (-1);
#endif
}
int
tga_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
void *v;
const struct wsscreen_descr *type;
void **cookiep;
int *curxp, *curyp;
long *attrp;
{
struct tga_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;
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sc->nscreens++;
return (0);
}
void
tga_free_screen(v, cookie)
void *v;
void *cookie;
{
struct tga_softc *sc = v;
if (sc->sc_dc == &tga_console_dc)
panic("tga_free_screen: console");
sc->nscreens--;
}
void
tga_show_screen(v, cookie)
void *v;
void *cookie;
{
}
int
tga_cnattach(iot, memt, pc, bus, device, function)
bus_space_tag_t iot, memt;
pci_chipset_tag_t pc;
int bus, device, function;
{
struct tga_devconfig *dcp = &tga_console_dc;
long defattr;
tga_getdevconfig(memt, 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);
rcons_alloc_attr(&dcp->dc_rcons, 0, 0, 0, &defattr);
wsdisplay_cnattach(&tga_stdscreen, &dcp->dc_rcons,
0, 0, defattr);
return(0);
}
/*
* 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] |= VVR_BLANK; /* XXX */
}
}
void
tga_unblank(dc)
struct tga_devconfig *dc;
{
if (dc->dc_blanked) {
dc->dc_blanked = 0;
dc->dc_regs[TGA_REG_VVVR] &= ~VVR_BLANK; /* XXX */
}
}
/*
* Functions to manipulate the built-in cursor handing hardware.
*/
int
tga_builtin_set_cursor(dc, cursorp)
struct tga_devconfig *dc;
struct wsdisplay_cursor *cursorp;
{
int count, error, v;
v = cursorp->which;
if (v & WSDISPLAY_CURSOR_DOCMAP) {
error = (*dc->dc_tgaconf->tgac_ramdac->tgar_check_curcmap)(dc,
cursorp);
if (error)
return (error);
}
if (v & WSDISPLAY_CURSOR_DOSHAPE) {
if ((u_int)cursorp->size.x != 64 ||
(u_int)cursorp->size.y > 64)
return (EINVAL);
/* The cursor is 2 bits deep, and there is no mask */
count = (cursorp->size.y * 64 * 2) / NBBY;
if (!uvm_useracc(cursorp->image, count, B_READ))
return (EFAULT);
}
if (v & WSDISPLAY_CURSOR_DOHOT) /* not supported */
return EINVAL;
/* parameters are OK; do it */
if (v & WSDISPLAY_CURSOR_DOCUR) {
if (cursorp->enable)
dc->dc_regs[TGA_REG_VVVR] |= 0x04; /* XXX */
else
dc->dc_regs[TGA_REG_VVVR] &= ~0x04; /* XXX */
}
if (v & WSDISPLAY_CURSOR_DOPOS) {
dc->dc_regs[TGA_REG_CXYR] = ((cursorp->pos.y & 0xfff) << 12) |
(cursorp->pos.x & 0xfff);
}
if (v & WSDISPLAY_CURSOR_DOCMAP) {
/* can't fail. */
(*dc->dc_tgaconf->tgac_ramdac->tgar_set_curcmap)(dc, cursorp);
}
if (v & WSDISPLAY_CURSOR_DOSHAPE) {
count = ((64 * 2) / NBBY) * cursorp->size.y;
dc->dc_regs[TGA_REG_CCBR] =
(dc->dc_regs[TGA_REG_CCBR] & ~0xfc00) |
(cursorp->size.y << 10);
copyin(cursorp->image, (char *)(dc->dc_vaddr +
(dc->dc_regs[TGA_REG_CCBR] & 0x3ff)),
count); /* can't fail. */
}
return (0);
}
int
tga_builtin_get_cursor(dc, cursorp)
struct tga_devconfig *dc;
struct wsdisplay_cursor *cursorp;
{
int count, error;
cursorp->which = WSDISPLAY_CURSOR_DOALL &
~(WSDISPLAY_CURSOR_DOHOT | WSDISPLAY_CURSOR_DOCMAP);
cursorp->enable = (dc->dc_regs[TGA_REG_VVVR] & 0x04) != 0;
cursorp->pos.x = dc->dc_regs[TGA_REG_CXYR] & 0xfff;
cursorp->pos.y = (dc->dc_regs[TGA_REG_CXYR] >> 12) & 0xfff;
cursorp->size.x = 64;
cursorp->size.y = (dc->dc_regs[TGA_REG_CCBR] >> 10) & 0x3f;
if (cursorp->image != NULL) {
count = (cursorp->size.y * 64 * 2) / NBBY;
error = copyout((char *)(dc->dc_vaddr +
(dc->dc_regs[TGA_REG_CCBR] & 0x3ff)),
cursorp->image, count);
if (error)
return (error);
/* No mask */
}
error = (*dc->dc_tgaconf->tgac_ramdac->tgar_get_curcmap)(dc, cursorp);
return (error);
}
int
tga_builtin_set_curpos(dc, curposp)
struct tga_devconfig *dc;
struct wsdisplay_curpos *curposp;
{
dc->dc_regs[TGA_REG_CXYR] =
((curposp->y & 0xfff) << 12) | (curposp->x & 0xfff);
return (0);
}
int
tga_builtin_get_curpos(dc, curposp)
struct tga_devconfig *dc;
struct wsdisplay_curpos *curposp;
{
curposp->x = dc->dc_regs[TGA_REG_CXYR] & 0xfff;
curposp->y = (dc->dc_regs[TGA_REG_CXYR] >> 12) & 0xfff;
return (0);
}
int
tga_builtin_get_curmax(dc, curposp)
struct tga_devconfig *dc;
struct wsdisplay_curpos *curposp;
{
curposp->x = curposp->y = 64;
return (0);
}
/*
* Copy columns (characters) in a row (line).
*/
void
tga_copycols(id, row, srccol, dstcol, ncols)
void *id;
int row, srccol, dstcol, ncols;
{
struct rcons *rc = id;
int y, srcx, dstx, nx;
y = rc->rc_yorigin + rc->rc_font->height * row;
srcx = rc->rc_xorigin + rc->rc_font->width * srccol;
dstx = rc->rc_xorigin + rc->rc_font->width * dstcol;
nx = rc->rc_font->width * ncols;
tga_rop(rc->rc_sp, dstx, y,
nx, rc->rc_font->height, RAS_SRC,
rc->rc_sp, srcx, y);
}
/*
* Copy rows (lines).
*/
void
tga_copyrows(id, srcrow, dstrow, nrows)
void *id;
int srcrow, dstrow, nrows;
{
struct rcons *rc = id;
int srcy, dsty, ny;
srcy = rc->rc_yorigin + rc->rc_font->height * srcrow;
dsty = rc->rc_yorigin + rc->rc_font->height * dstrow;
ny = rc->rc_font->height * nrows;
tga_rop(rc->rc_sp, rc->rc_xorigin, dsty,
rc->rc_raswidth, ny, RAS_SRC,
rc->rc_sp, rc->rc_xorigin, srcy);
}
/* Do we need the src? */
static int needsrc[16] = { 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0 };
/* A mapping between our API and the TGA card */
static int map_rop[16] = { 0x0, 0x8, 0x4, 0xc, 0x2, 0xa, 0x6,
0xe, 0x1, 0x9, 0x5, 0xd, 0x3, 0xb, 0x7, 0xf
};
/*
* Generic TGA raster op.
* This covers all possible raster ops, and
* clips the sizes and all of that.
*/
static int
tga_rop(dst, dx, dy, w, h, rop, src, sx, sy)
struct raster *dst;
int dx, dy, w, h, rop;
struct raster *src;
int sx, sy;
{
if (!dst)
return -1;
if (dst->data == NULL)
return -1; /* we should be writing to a screen */
if (needsrc[RAS_GETOP(rop)]) {
if (src == (struct raster *) 0)
return -1; /* We want a src */
/* Clip against src */
if (sx < 0) {
w += sx;
sx = 0;
}
if (sy < 0) {
h += sy;
sy = 0;
}
if (sx + w > src->width)
w = src->width - sx;
if (sy + h > src->height)
h = src->height - sy;
} else {
if (src != (struct raster *) 0)
return -1; /* We need no src */
}
/* Clip against dst. We modify src regardless of using it,
* since it really doesn't matter.
*/
if (dx < 0) {
w += dx;
sx -= dx;
dx = 0;
}
if (dy < 0) {
h += dy;
sy -= dy;
dy = 0;
}
if (dx + w > dst->width)
w = dst->width - dx;
if (dy + h > dst->height)
h = dst->height - dy;
if (w <= 0 || h <= 0)
return 0; /* Vacuously true; */
if (!src)
return tga_rop_nosrc(dst, dx, dy, w, h, rop);
if (src->data == NULL)
return tga_rop_htov(dst, dx, dy, w, h, rop, src, sx, sy);
else
return tga_rop_vtov(dst, dx, dy, w, h, rop, src, sx, sy);
}
/*
* No source raster ops.
* This function deals with all raster ops that don't require a src.
*/
static int
tga_rop_nosrc(dst, dx, dy, w, h, rop)
struct raster *dst;
int dx, dy, w, h, rop;
{
return raster_op(dst, dx, dy, w, h, rop, NULL, 0, 0);
}
/*
* Host to Video raster ops.
* This function deals with all raster ops that have a src that is host memory.
*/
static int
tga_rop_htov(dst, dx, dy, w, h, rop, src, sx, sy)
struct raster *dst;
int dx, dy, w, h, rop;
struct raster *src;
int sx, sy;
{
return raster_op(dst, dx, dy, w, h, rop, src, sx, sy);
}
/*
* Video to Video raster ops.
* This function deals with all raster ops that have a src and dst
* that are on the card.
*/
static int
tga_rop_vtov(dst, dx, dy, w, h, rop, src, sx, sy)
struct raster *dst;
int dx, dy, w, h, rop;
struct raster *src;
int sx, sy;
{
struct tga_devconfig *dc = (struct tga_devconfig *)dst->data;
tga_reg_t *regs0 = dc->dc_regs;
tga_reg_t *regs1 = regs0 + 16 * 1024; /* register alias 1 */
tga_reg_t *regs2 = regs1 + 16 * 1024; /* register alias 2 */
tga_reg_t *regs3 = regs2 + 16 * 1024; /* register alias 3 */
int srcb, dstb;
int x, y;
int xstart, xend, xdir, xinc;
int ystart, yend, ydir, yinc;
int offset = 1 * dc->dc_tgaconf->tgac_vvbr_units;
/*
* I don't yet want to deal with unaligned guys, really. And we don't
* deal with copies from one card to another.
*/
if (dx % 8 != 0 || sx % 8 != 0 || src != dst)
return raster_op(dst, dx, dy, w, h, rop, src, sx, sy);
if (sy >= dy) {
ystart = 0;
yend = h;
ydir = 1;
} else {
ystart = h;
yend = 0;
ydir = -1;
}
if (sx >= dx) {
xstart = 0;
xend = w * (dst->depth / 8);
xdir = 1;
} else {
xstart = w * (dst->depth / 8);
xend = 0;
xdir = -1;
}
xinc = xdir * 4 * 64;
yinc = ydir * dst->linelongs * 4;
ystart *= dst->linelongs * 4;
yend *= dst->linelongs * 4;
srcb = offset + sy * src->linelongs * 4 + sx;
dstb = offset + dy * dst->linelongs * 4 + dx;
regs3[TGA_REG_GMOR] = 0x0007; /* Copy mode */
regs3[TGA_REG_GOPR] = map_rop[rop]; /* Set up the op */
for (y = ystart; (ydir * y) < (ydir * yend); y += yinc) {
for (x = xstart; (xdir * x) < (xdir * xend); x += xinc) {
regs0[TGA_REG_GCSR] = srcb + y + x + 3 * 64;
regs0[TGA_REG_GCDR] = dstb + y + x + 3 * 64;
regs1[TGA_REG_GCSR] = srcb + y + x + 2 * 64;
regs1[TGA_REG_GCDR] = dstb + y + x + 2 * 64;
regs2[TGA_REG_GCSR] = srcb + y + x + 1 * 64;
regs2[TGA_REG_GCDR] = dstb + y + x + 1 * 64;
regs3[TGA_REG_GCSR] = srcb + y + x + 0 * 64;
regs3[TGA_REG_GCDR] = dstb + y + x + 0 * 64;
}
}
regs0[TGA_REG_GOPR] = 0x0003; /* op -> dst = src */
regs0[TGA_REG_GMOR] = 0x0000; /* Simple mode */
return 0;
}