// SPDX-License-Identifier: GPL-2.0-only
/*
*
* Hardware accelerated Matrox Millennium I , II , Mystique , G100 , G200 and G400
*
* ( c ) 1998 - 2002 Petr Vandrovec < vandrove @ vc . cvut . cz >
*
* Version : 1 . 65 2002 / 08 / 14
*
* MTRR stuff : 1998 Tom Rini < trini @ kernel . crashing . org >
*
* Contributors : " menion ? " < menion @ mindless . com >
* Betatesting , fixes , ideas
*
* " Kurt Garloff " < garloff @ suse . de >
* Betatesting , fixes , ideas , videomodes , videomodes timmings
*
* " Tom Rini " < trini @ kernel . crashing . org >
* MTRR stuff , PPC cleanups , betatesting , fixes , ideas
*
* " Bibek Sahu " < scorpio @ dodds . net >
* Access device through readb | w | l and write b | w | l
* Extensive debugging stuff
*
* " Daniel Haun " < haund @ usa . net >
* Testing , hardware cursor fixes
*
* " Scott Wood " < sawst46 + @ pitt . edu >
* Fixes
*
* " Gerd Knorr " < kraxel @ goldbach . isdn . cs . tu - berlin . de >
* Betatesting
*
* " Kelly French " < targon @ hazmat . com >
* " Fernando Herrera " < fherrera @ eurielec . etsit . upm . es >
* Betatesting , bug reporting
*
* " Pablo Bianucci " < pbian @ pccp . com . ar >
* Fixes , ideas , betatesting
*
* " Inaky Perez Gonzalez " < inaky @ peloncho . fis . ucm . es >
* Fixes , enhandcements , ideas , betatesting
*
* " Ryuichi Oikawa " < roikawa @ rr . iiij4u . or . jp >
* PPC betatesting , PPC support , backward compatibility
*
* " Paul Womar " < Paul @ pwomar . demon . co . uk >
* " Owen Waller " < O . Waller @ ee . qub . ac . uk >
* PPC betatesting
*
* " Thomas Pornin " < pornin @ bolet . ens . fr >
* Alpha betatesting
*
* " Pieter van Leuven " < pvl @ iae . nl >
* " Ulf Jaenicke - Roessler " < ujr @ physik . phy . tu - dresden . de >
* G100 testing
*
* " H . Peter Arvin " < hpa @ transmeta . com >
* Ideas
*
* " Cort Dougan " < cort @ cs . nmt . edu >
* CHRP fixes and PReP cleanup
*
* " Mark Vojkovich " < mvojkovi @ ucsd . edu >
* G400 support
*
* ( following author is not in any relation with this code , but his code
* is included in this driver )
*
* Based on framebuffer driver for VBE 2 . 0 compliant graphic boards
* ( c ) 1998 Gerd Knorr < kraxel @ cs . tu - berlin . de >
*
* ( following author is not in any relation with this code , but his ideas
* were used when writing this driver )
*
* FreeVBE / AF ( Matrox ) , " Shawn Hargreaves " < shawn @ talula . demon . co . uk >
*
*/
#include <linux/export.h>
#include "matroxfb_accel.h"
#include "matroxfb_DAC1064.h"
#include "matroxfb_Ti3026.h"
#include "matroxfb_misc.h"
#define curr_ydstorg(x) ((x)->curr.ydstorg.pixels)
#define mga_ydstlen(y,l) mga_outl(M_YDSTLEN | M_EXEC, ((y) << 16 ) | (l))
static inline void matrox_cfb4_pal(u_int32_t* pal) {
unsigned int i;
for (i = 0 ; i < 16 ; i++) {
pal[i] = i * 0 x11111111U;
}
}
static inline void matrox_cfb8_pal(u_int32_t* pal) {
unsigned int i;
for (i = 0 ; i < 16 ; i++) {
pal[i] = i * 0 x01010101U;
}
}
static void matroxfb_copyarea(struct fb_info* info, const struct fb_copyarea* area);
static void matroxfb_fillrect(struct fb_info* info, const struct fb_fillrect* rect);
static void matroxfb_imageblit(struct fb_info* info, const struct fb_image* image);
static void matroxfb_cfb4_fillrect(struct fb_info* info, const struct fb_fillrect* rect);
static void matroxfb_cfb4_copyarea(struct fb_info* info, const struct fb_copyarea* area);
void matrox_cfbX_init(struct matrox_fb_info *minfo)
{
u_int32_t maccess;
u_int32_t mpitch;
u_int32_t mopmode;
int accel;
DBG(__func__)
mpitch = minfo->fbcon.var.xres_virtual;
minfo->fbops.fb_copyarea = cfb_copyarea;
minfo->fbops.fb_fillrect = cfb_fillrect;
minfo->fbops.fb_imageblit = cfb_imageblit;
minfo->fbops.fb_cursor = NULL;
accel = (minfo->fbcon.var.accel_flags & FB_ACCELF_TEXT) == FB_ACCELF_TEXT;
switch (minfo->fbcon.var.bits_per_pixel) {
case 4 : maccess = 0 x00000000; /* accelerate as 8bpp video */
mpitch = (mpitch >> 1 ) | 0 x8000; /* disable linearization */
mopmode = M_OPMODE_4BPP;
matrox_cfb4_pal(minfo->cmap);
if (accel && !(mpitch & 1 )) {
minfo->fbops.fb_copyarea = matroxfb_cfb4_copyarea;
minfo->fbops.fb_fillrect = matroxfb_cfb4_fillrect;
}
break ;
case 8 : maccess = 0 x00000000;
mopmode = M_OPMODE_8BPP;
matrox_cfb8_pal(minfo->cmap);
if (accel) {
minfo->fbops.fb_copyarea = matroxfb_copyarea;
minfo->fbops.fb_fillrect = matroxfb_fillrect;
minfo->fbops.fb_imageblit = matroxfb_imageblit;
}
break ;
case 16 : if (minfo->fbcon.var.green.length == 5 )
maccess = 0 xC0000001;
else
maccess = 0 x40000001;
mopmode = M_OPMODE_16BPP;
if (accel) {
minfo->fbops.fb_copyarea = matroxfb_copyarea;
minfo->fbops.fb_fillrect = matroxfb_fillrect;
minfo->fbops.fb_imageblit = matroxfb_imageblit;
}
break ;
case 24 : maccess = 0 x00000003;
mopmode = M_OPMODE_24BPP;
if (accel) {
minfo->fbops.fb_copyarea = matroxfb_copyarea;
minfo->fbops.fb_fillrect = matroxfb_fillrect;
minfo->fbops.fb_imageblit = matroxfb_imageblit;
}
break ;
case 32 : maccess = 0 x00000002;
mopmode = M_OPMODE_32BPP;
if (accel) {
minfo->fbops.fb_copyarea = matroxfb_copyarea;
minfo->fbops.fb_fillrect = matroxfb_fillrect;
minfo->fbops.fb_imageblit = matroxfb_imageblit;
}
break ;
default : maccess = 0 x00000000;
mopmode = 0 x00000000;
break ; /* turn off acceleration!!! */
}
mga_fifo(8 );
mga_outl(M_PITCH, mpitch);
mga_outl(M_YDSTORG, curr_ydstorg(minfo));
if (minfo->capable.plnwt)
mga_outl(M_PLNWT, -1 );
if (minfo->capable.srcorg) {
mga_outl(M_SRCORG, 0 );
mga_outl(M_DSTORG, 0 );
}
mga_outl(M_OPMODE, mopmode);
mga_outl(M_CXBNDRY, 0 xFFFF0000);
mga_outl(M_YTOP, 0 );
mga_outl(M_YBOT, 0 x01FFFFFF);
mga_outl(M_MACCESS, maccess);
minfo->accel.m_dwg_rect = M_DWG_TRAP | M_DWG_SOLID | M_DWG_ARZERO | M_DWG_SGNZERO | M_DWG_SHIFTZERO;
if (isMilleniumII(minfo)) minfo->accel.m_dwg_rect |= M_DWG_TRANSC;
minfo->accel.m_opmode = mopmode;
minfo->accel.m_access = maccess;
minfo->accel.m_pitch = mpitch;
}
EXPORT_SYMBOL(matrox_cfbX_init);
static void matrox_accel_restore_maccess(struct matrox_fb_info *minfo)
{
mga_outl(M_MACCESS, minfo->accel.m_access);
mga_outl(M_PITCH, minfo->accel.m_pitch);
}
static void matrox_accel_bmove(struct matrox_fb_info *minfo, int vxres, int sy,
int sx, int dy, int dx, int height, int width)
{
int start, end;
CRITFLAGS
DBG(__func__)
CRITBEGIN
if ((dy < sy) || ((dy == sy) && (dx <= sx))) {
mga_fifo(4 );
matrox_accel_restore_maccess(minfo);
mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_SGNZERO |
M_DWG_BFCOL | M_DWG_REPLACE);
mga_outl(M_AR5, vxres);
width--;
start = sy*vxres+sx+curr_ydstorg(minfo);
end = start+width;
} else {
mga_fifo(5 );
matrox_accel_restore_maccess(minfo);
mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_BFCOL | M_DWG_REPLACE);
mga_outl(M_SGN, 5 );
mga_outl(M_AR5, -vxres);
width--;
end = (sy+height-1 )*vxres+sx+curr_ydstorg(minfo);
start = end+width;
dy += height-1 ;
}
mga_fifo(6 );
matrox_accel_restore_maccess(minfo);
mga_outl(M_AR0, end);
mga_outl(M_AR3, start);
mga_outl(M_FXBNDRY, ((dx+width)<<16 ) | dx);
mga_ydstlen(dy, height);
WaitTillIdle();
CRITEND
}
static void matrox_accel_bmove_lin(struct matrox_fb_info *minfo, int vxres,
int sy, int sx, int dy, int dx, int height,
int width)
{
int start, end;
CRITFLAGS
DBG(__func__)
CRITBEGIN
if ((dy < sy) || ((dy == sy) && (dx <= sx))) {
mga_fifo(4 );
matrox_accel_restore_maccess(minfo);
mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_SGNZERO |
M_DWG_BFCOL | M_DWG_REPLACE);
mga_outl(M_AR5, vxres);
width--;
start = sy*vxres+sx+curr_ydstorg(minfo);
end = start+width;
} else {
mga_fifo(5 );
matrox_accel_restore_maccess(minfo);
mga_outl(M_DWGCTL, M_DWG_BITBLT | M_DWG_SHIFTZERO | M_DWG_BFCOL | M_DWG_REPLACE);
mga_outl(M_SGN, 5 );
mga_outl(M_AR5, -vxres);
width--;
end = (sy+height-1 )*vxres+sx+curr_ydstorg(minfo);
start = end+width;
dy += height-1 ;
}
mga_fifo(7 );
matrox_accel_restore_maccess(minfo);
mga_outl(M_AR0, end);
mga_outl(M_AR3, start);
mga_outl(M_FXBNDRY, ((dx+width)<<16 ) | dx);
mga_outl(M_YDST, dy*vxres >> 5 );
mga_outl(M_LEN | M_EXEC, height);
WaitTillIdle();
CRITEND
}
static void matroxfb_cfb4_copyarea(struct fb_info* info, const struct fb_copyarea* area) {
struct matrox_fb_info *minfo = info2minfo(info);
if ((area->sx | area->dx | area->width) & 1 )
cfb_copyarea(info, area);
else
matrox_accel_bmove_lin(minfo, minfo->fbcon.var.xres_virtual >> 1 , area->sy, area->sx >> 1 , area->dy, area->dx >> 1 , area->height, area->width >> 1 );
}
static void matroxfb_copyarea(struct fb_info* info, const struct fb_copyarea* area) {
struct matrox_fb_info *minfo = info2minfo(info);
matrox_accel_bmove(minfo, minfo->fbcon.var.xres_virtual, area->sy, area->sx, area->dy, area->dx, area->height, area->width);
}
static void matroxfb_accel_clear(struct matrox_fb_info *minfo, u_int32_t color,
int sy, int sx, int height, int width)
{
CRITFLAGS
DBG(__func__)
CRITBEGIN
mga_fifo(7 );
matrox_accel_restore_maccess(minfo);
mga_outl(M_DWGCTL, minfo->accel.m_dwg_rect | M_DWG_REPLACE);
mga_outl(M_FCOL, color);
mga_outl(M_FXBNDRY, ((sx + width) << 16 ) | sx);
mga_ydstlen(sy, height);
WaitTillIdle();
CRITEND
}
static void matroxfb_fillrect(struct fb_info* info, const struct fb_fillrect* rect) {
struct matrox_fb_info *minfo = info2minfo(info);
switch (rect->rop) {
case ROP_COPY:
matroxfb_accel_clear(minfo, ((u_int32_t *)info->pseudo_palette)[rect->color], rect->dy, rect->dx, rect->height, rect->width);
break ;
}
}
static void matroxfb_cfb4_clear(struct matrox_fb_info *minfo, u_int32_t bgx,
int sy, int sx, int height, int width)
{
int whattodo;
CRITFLAGS
DBG(__func__)
CRITBEGIN
whattodo = 0 ;
if (sx & 1 ) {
sx ++;
if (!width) return ;
width --;
whattodo = 1 ;
}
if (width & 1 ) {
whattodo |= 2 ;
}
width >>= 1 ;
sx >>= 1 ;
if (width) {
mga_fifo(7 );
matrox_accel_restore_maccess(minfo);
mga_outl(M_DWGCTL, minfo->accel.m_dwg_rect | M_DWG_REPLACE2);
mga_outl(M_FCOL, bgx);
mga_outl(M_FXBNDRY, ((sx + width) << 16 ) | sx);
mga_outl(M_YDST, sy * minfo->fbcon.var.xres_virtual >> 6 );
mga_outl(M_LEN | M_EXEC, height);
WaitTillIdle();
}
if (whattodo) {
u_int32_t step = minfo->fbcon.var.xres_virtual >> 1 ;
vaddr_t vbase = minfo->video.vbase;
if (whattodo & 1 ) {
unsigned int uaddr = sy * step + sx - 1 ;
u_int32_t loop;
u_int8_t bgx2 = bgx & 0 xF0;
for (loop = height; loop > 0 ; loop --) {
mga_writeb(vbase, uaddr, (mga_readb(vbase, uaddr) & 0 x0F) | bgx2);
uaddr += step;
}
}
if (whattodo & 2 ) {
unsigned int uaddr = sy * step + sx + width;
u_int32_t loop;
u_int8_t bgx2 = bgx & 0 x0F;
for (loop = height; loop > 0 ; loop --) {
mga_writeb(vbase, uaddr, (mga_readb(vbase, uaddr) & 0 xF0) | bgx2);
uaddr += step;
}
}
}
CRITEND
}
static void matroxfb_cfb4_fillrect(struct fb_info* info, const struct fb_fillrect* rect) {
struct matrox_fb_info *minfo = info2minfo(info);
switch (rect->rop) {
case ROP_COPY:
matroxfb_cfb4_clear(minfo, ((u_int32_t *)info->pseudo_palette)[rect->color], rect->dy, rect->dx, rect->height, rect->width);
break ;
}
}
static void matroxfb_1bpp_imageblit(struct matrox_fb_info *minfo, u_int32_t fgx,
u_int32_t bgx, const u_int8_t *chardata,
int width, int height, int yy, int xx)
{
u_int32_t step;
u_int32_t ydstlen;
u_int32_t xlen;
u_int32_t ar0;
u_int32_t charcell;
u_int32_t fxbndry;
vaddr_t mmio;
int easy;
CRITFLAGS
DBG_HEAVY(__func__);
step = (width + 7 ) >> 3 ;
charcell = height * step;
xlen = (charcell + 3 ) & ~3 ;
ydstlen = (yy << 16 ) | height;
if (width == step << 3 ) {
ar0 = height * width - 1 ;
easy = 1 ;
} else {
ar0 = width - 1 ;
easy = 0 ;
}
CRITBEGIN
mga_fifo(5 );
matrox_accel_restore_maccess(minfo);
if (easy)
mga_outl(M_DWGCTL, M_DWG_ILOAD | M_DWG_SGNZERO | M_DWG_SHIFTZERO | M_DWG_BMONOWF | M_DWG_LINEAR | M_DWG_REPLACE);
else
mga_outl(M_DWGCTL, M_DWG_ILOAD | M_DWG_SGNZERO | M_DWG_SHIFTZERO | M_DWG_BMONOWF | M_DWG_REPLACE);
mga_outl(M_FCOL, fgx);
mga_outl(M_BCOL, bgx);
fxbndry = ((xx + width - 1 ) << 16 ) | xx;
mmio = minfo->mmio.vbase;
mga_fifo(8 );
matrox_accel_restore_maccess(minfo);
mga_writel(mmio, M_FXBNDRY, fxbndry);
mga_writel(mmio, M_AR0, ar0);
mga_writel(mmio, M_AR3, 0 );
if (easy) {
mga_writel(mmio, M_YDSTLEN | M_EXEC, ydstlen);
mga_memcpy_toio(mmio, chardata, xlen);
} else {
mga_writel(mmio, M_AR5, 0 );
mga_writel(mmio, M_YDSTLEN | M_EXEC, ydstlen);
if ((step & 3 ) == 0 ) {
/* Great. Source has 32bit aligned lines, so we can feed them
directly to the accelerator. */
mga_memcpy_toio(mmio, chardata, charcell);
} else if (step == 1 ) {
/* Special case for 1..8bit widths */
while (height--) {
#if defined (__BIG_ENDIAN)
fb_writel((*chardata) << 24 , mmio.vaddr);
#else
fb_writel(*chardata, mmio.vaddr);
#endif
chardata++;
}
} else if (step == 2 ) {
/* Special case for 9..15bit widths */
while (height--) {
#if defined (__BIG_ENDIAN)
fb_writel((*(u_int16_t*)chardata) << 16 , mmio.vaddr);
#else
fb_writel(*(u_int16_t*)chardata, mmio.vaddr);
#endif
chardata += 2 ;
}
} else {
/* Tell... well, why bother... */
while (height--) {
size_t i;
for (i = 0 ; i < step; i += 4 ) {
/* Hope that there are at least three readable bytes beyond the end of bitmap */
fb_writel(get_unaligned((u_int32_t*)(chardata + i)),mmio.vaddr);
}
chardata += step;
}
}
}
WaitTillIdle();
CRITEND
}
static void matroxfb_imageblit(struct fb_info* info, const struct fb_image* image) {
struct matrox_fb_info *minfo = info2minfo(info);
DBG_HEAVY(__func__);
if (image->depth == 1 ) {
u_int32_t fgx, bgx;
fgx = ((u_int32_t*)info->pseudo_palette)[image->fg_color];
bgx = ((u_int32_t*)info->pseudo_palette)[image->bg_color];
matroxfb_1bpp_imageblit(minfo, fgx, bgx, image->data, image->width, image->height, image->dy, image->dx);
} else {
/* Danger! image->depth is useless: logo painting code always
passes framebuffer color depth here , although logo data are
always 8 bpp and info - > pseudo_palette is changed to contain
logo palette to be used ( but only for true / direct - color . . . sic . . . ) .
So do it completely in software... */
cfb_imageblit(info, image);
}
}
MODULE_DESCRIPTION("Accelerated fbops for Matrox Millennium/Mystique/G100/G200/G400/G450/G550" );
MODULE_LICENSE("GPL" );
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