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xenocara/xserver/hw/kdrive/igs/igs.c

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/*
* Copyright © 1999 SuSE, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of SuSE not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. SuSE makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Keith Packard, SuSE, Inc.
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
#include "igs.h"
Bool
igsCardInit (KdCardInfo *card)
{
int k;
char *pixels;
IgsCardInfo *igsc;
igsc = (IgsCardInfo *) xalloc (sizeof (IgsCardInfo));
if (!igsc)
return FALSE;
memset (igsc, '\0', sizeof (IgsCardInfo));
igsc->frameBuffer = (CARD8 *) KdMapDevice (card->attr.address[0] +
IGS_FB,
IGS_MEM);
igsc->vga = (VOL8 *) KdMapDevice (card->attr.address[0] +
IGS_VGA,
64 * 1024);
igsc->cop = (Cop5xxx *) KdMapDevice (card->attr.address[0] +
IGS_COP_OFFSET,
sizeof (Cop5xxx));
igsc->copData = (VOL32 *) KdMapDevice (card->attr.address[0] +
IGS_COP_DATA,
IGS_COP_DATA_LEN);
igsRegInit (&igsc->igsvga, igsc->vga);
card->driver = igsc;
return TRUE;
}
Bool
igsModeSupported (KdScreenInfo *screen,
const KdMonitorTiming *t)
{
/* make sure the clock isn't too fast */
if (t->clock > IGS_MAX_CLOCK)
return FALSE;
/* width must be a multiple of 16 */
if (t->horizontal & 0xf)
return FALSE;
return TRUE;
}
Bool
igsModeUsable (KdScreenInfo *screen)
{
KdCardInfo *card = screen->card;
int screen_size;
int pixel_width;
int byte_width;
int fb = 0;
screen_size = 0;
if (screen->fb[fb].depth >= 24)
{
screen->fb[fb].depth = 24;
if (screen->fb[fb].bitsPerPixel != 24)
screen->fb[fb].bitsPerPixel = 32;
}
else if (screen->fb[fb].depth >= 16)
{
screen->fb[fb].depth = 16;
screen->fb[fb].bitsPerPixel = 16;
}
else if (screen->fb[fb].depth >= 15)
{
screen->fb[fb].depth = 15;
screen->fb[fb].bitsPerPixel = 16;
}
else if (screen->fb[fb].depth >= 12)
{
screen->fb[fb].depth = 12;
screen->fb[fb].bitsPerPixel = 16;
}
else
{
screen->fb[fb].depth = 8;
screen->fb[fb].bitsPerPixel = 8;
}
byte_width = screen->width * (screen->fb[fb].bitsPerPixel >> 3);
pixel_width = screen->width;
screen->fb[fb].pixelStride = pixel_width;
screen->fb[fb].byteStride = byte_width;
screen_size += byte_width * screen->height;
return TRUE;
}
Bool
igsScreenInit (KdScreenInfo *screen)
{
IgsCardInfo *igsc = screen->card->driver;
int fb = 0;
IgsScreenInfo *igss;
int screen_size, memory;
int pattern_size;
int tile_size;
int stipple_size;
int poffset, boffset;
const KdMonitorTiming *t;
if (!screen->width || !screen->height)
{
screen->width = 800;
screen->height = 600;
screen->rate = 72;
}
if (!screen->fb[0].depth)
screen->fb[0].depth = 8;
t = KdFindMode (screen, igsModeSupported);
screen->rate = t->rate;
screen->width = t->horizontal;
screen->height = t->vertical;
if (!KdTuneMode (screen, igsModeUsable, igsModeSupported))
{
return FALSE;
}
igss = (IgsScreenInfo *) xalloc (sizeof (IgsScreenInfo));
if (!igss)
return FALSE;
memset (igss, '\0', sizeof (IgsScreenInfo));
screen_size = screen->fb[fb].byteStride * screen->height;
memory = IGS_MEM;
memory -= screen_size;
if (memory >= 1024)
{
igss->cursor_offset = memory - 1024;
#if BITMAP_BIT_ORDER == MSBFirst
igss->cursor_base = (CARD8 *) KdMapDevice (card->attr.address[0] +
igss->cursor_offset,
1024);
#else
igss->cursor_base = igsc->frameBuffer + igss->cursor_offset;
#endif
memory -= 1024;
}
else
igss->cursor_base = 0;
tile_size = IgsTileSize(screen->fb[fb].bitsPerPixel) * IGS_NUM_PATTERN;
stipple_size = IgsStippleSize(screen->fb[fb].bitsPerPixel) * IGS_NUM_PATTERN;
pattern_size = tile_size + stipple_size;
if (memory >= pattern_size)
{
boffset = screen_size;
poffset = boffset * 8 / screen->fb[fb].bitsPerPixel;
igss->tile.offset = poffset;
igss->tile.base = igsc->frameBuffer + boffset;
boffset = screen_size + tile_size;
poffset = boffset * 8 / screen->fb[fb].bitsPerPixel;
igss->stipple.offset = poffset;
igss->stipple.base = igsc->frameBuffer + boffset;
memory -= pattern_size;
}
else
{
igss->tile.base = 0;
igss->stipple.base = 0;
}
switch (screen->fb[fb].depth) {
case 8:
screen->fb[fb].visuals = ((1 << StaticGray) |
(1 << GrayScale) |
(1 << StaticColor) |
(1 << PseudoColor) |
(1 << TrueColor) |
(1 << DirectColor));
screen->fb[fb].blueMask = 0x00;
screen->fb[fb].greenMask = 0x00;
screen->fb[fb].redMask = 0x00;
break;
case 15:
screen->fb[fb].visuals = (1 << TrueColor);
screen->fb[fb].blueMask = 0x001f;
screen->fb[fb].greenMask = 0x03e0;
screen->fb[fb].redMask = 0x7c00;
break;
case 16:
screen->fb[fb].visuals = (1 << TrueColor);
screen->fb[fb].blueMask = 0x001f;
screen->fb[fb].greenMask = 0x07e0;
screen->fb[fb].redMask = 0xf800;
break;
case 24:
screen->fb[fb].visuals = (1 << TrueColor);
screen->fb[fb].blueMask = 0x0000ff;
screen->fb[fb].greenMask = 0x00ff00;
screen->fb[fb].redMask = 0xff0000;
break;
}
screen->fb[fb].pixelStride = screen->width;
screen->fb[fb].byteStride = screen->width * (screen->fb[fb].bitsPerPixel >> 3);
screen->fb[fb].frameBuffer = igsc->frameBuffer;
if (!igsc->cop)
screen->dumb = TRUE;
screen->driver = igss;
return TRUE;
}
Bool
igsInitScreen(ScreenPtr pScreen)
{
return TRUE;
}
void
igsPreserve (KdCardInfo *card)
{
IgsCardInfo *igsc = card->driver;
IgsVga *igsvga = &igsc->igsvga;
igsSave (igsvga);
}
void
igsSetBlank (IgsVga *igsvga, Bool blank)
{
igsSetImm(igsvga, igs_screen_off, blank ? 1 : 0);
}
void
igsSetSync (IgsCardInfo *igsc, int hsync, int vsync)
{
IgsVga *igsvga = &igsc->igsvga;
igsSet (igsvga, igs_mexhsyn, hsync);
igsSet (igsvga, igs_mexvsyn, vsync);
VgaFlush (&igsvga->card);
}
/*
* Clock synthesis:
*
* scale = p ? (2 * p) : 1
* f_out = f_ref * ((M + 1) / ((N + 1) * scale))
*
* Constraints:
*
* 1. 115MHz <= f_ref * ((M + 1) / (N + 1)) <= 260 MHz
* 2. N >= 1
*
* Vertical refresh rate = clock / ((hsize + hblank) * (vsize + vblank))
* Horizontal refresh rate = clock / (hsize + hblank)
*/
/* all in kHz */
void
igsGetClock (int target, int *Mp, int *Np, int *Pp, int maxM, int maxN, int maxP, int minVco)
{
int M, N, P, bestM, bestN;
int f_vco, f_out;
int err, abserr, besterr;
/*
* Compute correct P value to keep VCO in range
*/
for (P = 0; P <= maxP; P++)
{
f_vco = target * IGS_SCALE(P);
if (f_vco >= minVco)
break;
}
/* M = f_out / f_ref * ((N + 1) * IGS_SCALE(P)); */
besterr = target;
for (N = 1; N <= maxN; N++)
{
M = ((target * (N + 1) * IGS_SCALE(P) + (IGS_CLOCK_REF/2)) + IGS_CLOCK_REF/2) / IGS_CLOCK_REF - 1;
if (0 <= M && M <= maxM)
{
f_out = IGS_CLOCK(M,N,P);
err = target - f_out;
if (err < 0)
err = -err;
if (err < besterr)
{
besterr = err;
bestM = M;
bestN = N;
}
}
}
*Mp = bestM;
*Np = bestN;
*Pp = P;
}
Bool
igsEnable (ScreenPtr pScreen)
{
KdScreenPriv(pScreen);
KdCardInfo *card = pScreenPriv->card;
KdScreenInfo *screen = pScreenPriv->screen;
IgsCardInfo *igsc = card->driver;
IgsVga *igsvga = &igsc->igsvga;
const KdMonitorTiming *t;
int hactive, hblank, hfp, hbp;
int vactive, vblank, vfp, vbp;
int hsize;
int fb = 0;
int m, n, r;
int h_total;
int h_display_end;
int h_blank_start;
int h_blank_end;
int h_sync_start;
int h_sync_end;
int h_screen_off;
int v_total;
int v_retrace_start;
int v_retrace_end;
int v_display_end;
int v_blank_start;
int v_blank_end;
int offset;
int num_fetch;
int m_m, m_n, m_r;
igsSetBlank (igsvga, TRUE);
t = KdFindMode (screen, igsModeSupported);
igsGetClock (t->clock, &m, &n, &r, 2047, 255, 7, IGS_MIN_VCO);
/*
* Set the chip so that 0x400000 is a big-endian frame buffer
* with the correct byte swapping enabled
*/
igsSet (igsvga, igs_biga22force, 0);
igsSet (igsvga, igs_biga22en, 1);
igsSet (igsvga, igs_biga24en, 1);
/*
* Enable 8-bit DACs
*/
igsSet (igsvga, igs_rampwdn, 0);
igsSet (igsvga, igs_dac6_8, 1);
igsSet (igsvga, igs_dacpwdn, 0);
/*
* Set overscan to black
*/
igsSet (igsvga, igs_overscan_red, 0x00);
igsSet (igsvga, igs_overscan_green, 0x00);
igsSet (igsvga, igs_overscan_blue, 0x00);
/*
* Enable PCI retries
*/
igsSet (igsvga, igs_iow_retry, 1);
igsSet (igsvga, igs_mw_retry, 1);
igsSet (igsvga, igs_mr_retry, 1);
igsSet (igsvga, igs_pci_burst_write, 1);
igsSet (igsvga, igs_pci_burst_read, 1);
/*
* Set FIFO
*/
igsSet (igsvga, igs_memgopg, 1);
igsSet (igsvga, igs_memr2wpg, 0);
igsSet (igsvga, igs_crtff16, 0);
igsSet (igsvga, igs_fifomust, 0xff);
igsSet (igsvga, igs_fifogen, 0xff);
/*
* Enable CRT reg access
*/
igsSetImm (igsvga, igs_ena_vr_access, 1);
igsSetImm (igsvga, igs_crt_protect, 0);
hfp = t->hfp;
hbp = t->hbp;
hblank = t->hblank;
hactive = t->horizontal;
offset = screen->fb[0].byteStride;
vfp = t->vfp;
vbp = t->vbp;
vblank = t->vblank;
vactive = t->vertical;
/*
* Compute character lengths for horizontal timing values
*/
hactive = screen->width / 8;
hblank /= 8;
hfp /= 8;
hbp /= 8;
offset /= 8;
switch (screen->fb[fb].bitsPerPixel) {
case 8:
igsSet (igsvga, igs_overscan_red, pScreen->blackPixel);
igsSet (igsvga, igs_overscan_green, pScreen->blackPixel);
igsSet (igsvga, igs_overscan_blue, pScreen->blackPixel);
igsSet (igsvga, igs_bigswap, IGS_BIGSWAP_8);
igsSet (igsvga, igs_mode_sel, IGS_MODE_8);
igsSet (igsvga, igs_ramdacbypass, 0);
break;
case 16:
igsSet (igsvga, igs_bigswap, IGS_BIGSWAP_16);
igsSet (igsvga, igs_ramdacbypass, 1);
switch (screen->fb[fb].depth) {
case 12:
igsSet (igsvga, igs_mode_sel, IGS_MODE_4444);
break;
case 15:
igsSet (igsvga, igs_mode_sel, IGS_MODE_5551);
break;
case 16:
igsSet (igsvga, igs_mode_sel, IGS_MODE_565);
break;
}
break;
case 24:
igsSet (igsvga, igs_ramdacbypass, 1);
igsSet (igsvga, igs_bigswap, IGS_BIGSWAP_8);
igsSet (igsvga, igs_mode_sel, IGS_MODE_888);
break;
case 32:
igsSet (igsvga, igs_ramdacbypass, 1);
igsSet (igsvga, igs_bigswap, IGS_BIGSWAP_32);
igsSet (igsvga, igs_mode_sel, IGS_MODE_8888);
break;
}
/*
* Compute horizontal register values from timings
*/
h_total = hactive + hblank - 5;
h_display_end = hactive - 1;
h_sync_start = hactive + hfp;
h_sync_end = hactive + hblank - hbp;
/*
* pad the blank values narrow a bit and use the border_select to
* eliminate the remaining border; don't know why, but it doesn't
* work in the documented fashion
*/
h_blank_start = hactive - 1;
h_blank_end = hactive + hblank - 1 - 1;
num_fetch = (t->horizontal * screen->fb[fb].bitsPerPixel / 64) + 1;
v_total = vactive + vblank - 2;
v_display_end = vactive - 1;
v_blank_start = vactive - 1;
v_blank_end = v_blank_start + vblank - 1;
v_retrace_start = vactive + vfp;
v_retrace_end = vactive + vblank - vbp;
#if 0
#define chk(a,b,c) fprintf (stderr, "%20.20s: BIOS %6d X %6d\n", a, igsGet(igsvga, b), c);
chk("h_total", igs_h_total, h_total);
chk("h_display_end", igs_h_de_end, h_display_end);
chk("h_sync_start", igs_h_rstart, h_sync_start);
chk("h_sync_end", igs_h_rend, h_sync_end&0x1f);
chk("h_blank_start", igs_h_bstart, h_blank_start);
chk("h_blank_end", igs_h_bend, h_blank_end&0x3f);
chk("offset", igs_offset, offset);
chk("num_fetch", igs_num_fetch, num_fetch);
chk("v_total", igs_v_total, v_total);
chk("v_display_end", igs_v_de_end, v_display_end);
chk("v_blank_start", igs_v_bstart, v_blank_start);
chk("v_blank_end", igs_v_bend, v_blank_end&0xf);
chk("v_retrace_start", igs_v_rstart, v_retrace_start);
chk("v_retrace_end", igs_v_rend, v_retrace_end&0xf);
chk("vclk_m", igs_vclk_m, m);
chk("vclk_n", igs_vclk_n, n);
chk("vclk_p", igs_vclk_p, r);
fprintf (stderr, "%20.20s: BIOS %6d X %6d\n", "vclk",
IGS_CLOCK(igsGet(igsvga,igs_vclk_m),
igsGet(igsvga,igs_vclk_n),
igsGet(igsvga,igs_vclk_p)),
IGS_CLOCK(m,n,r));
#endif
igsSet (igsvga, igs_h_total, h_total);
igsSet (igsvga, igs_h_de_end, h_display_end);
igsSet (igsvga, igs_h_rstart, h_sync_start);
igsSet (igsvga, igs_h_rend, h_sync_end);
igsSet (igsvga, igs_h_bstart, h_blank_start);
igsSet (igsvga, igs_h_bend, h_blank_end);
igsSet (igsvga, igs_offset, offset);
igsSet (igsvga, igs_num_fetch, num_fetch);
igsSet (igsvga, igs_v_total, v_total);
igsSet (igsvga, igs_v_de_end, v_display_end);
igsSet (igsvga, igs_v_bstart, v_blank_start);
igsSet (igsvga, igs_v_bend, v_blank_end&0xf);
igsSet (igsvga, igs_v_rstart, v_retrace_start);
igsSet (igsvga, igs_v_rend, v_retrace_end&0xf);
igsSet (igsvga, igs_vclk_m, m);
igsSet (igsvga, igs_vclk_n, n);
igsSet (igsvga, igs_vclk_p, r);
igsSet (igsvga, igs_vfsel, IGS_CLOCK(m, n, 0) >= 180000);
VgaFlush (&igsvga->card);
igsSetImm (igsvga, igs_frqlat, 0);
igsSetImm (igsvga, igs_frqlat, 1);
igsSetImm (igsvga, igs_frqlat, 0);
igsSetBlank (igsvga, FALSE);
#if 0
#define dbg(a,b) fprintf(stderr, "%20.20s = 0x%x\n", a, igsGet(igsvga,b))
#include "reg.dbg"
{
VGA16 reg;
char buf[128];
for (reg = 0; reg < IGS_NREG; reg++)
fprintf(stderr, "%20.20s = 0x%02x\n", igsRegName(buf, reg),
VgaFetch (&igsvga->card, reg));
}
#endif
return TRUE;
}
Bool
igsDPMS (ScreenPtr pScreen, int mode)
{
KdScreenPriv(pScreen);
IgsCardInfo *igsc = pScreenPriv->card->driver;
IgsVga *igsvga = &igsc->igsvga;
switch (mode) {
case KD_DPMS_NORMAL:
igsSetSync (igsc, 0, 0);
igsSetBlank (igsvga, FALSE);
break;
case KD_DPMS_STANDBY:
igsSetBlank (igsvga, TRUE);
igsSetSync (igsc, 1, 0);
break;
case KD_DPMS_SUSPEND:
igsSetBlank (igsvga, TRUE);
igsSetSync (igsc, 0, 1);
break;
case KD_DPMS_POWERDOWN:
igsSetBlank (igsvga, TRUE);
igsSetSync (igsc, 1, 1);
break;
}
return TRUE;
}
void
igsDisable (ScreenPtr pScreen)
{
}
void
igsRestore (KdCardInfo *card)
{
IgsCardInfo *igsc = card->driver;
IgsVga *igsvga = &igsc->igsvga;
igsReset (igsvga);
}
void
igsScreenFini (KdScreenInfo *screen)
{
IgsScreenInfo *igss = (IgsScreenInfo *) screen->driver;
#if BITMAP_BIT_ORDER == MSBFirst
if (igss->cursor_base)
KdUnmapDevice ((void *) igss->cursor_base, 1024);
#endif
xfree (igss);
screen->driver = 0;
}
void
igsCardFini (KdCardInfo *card)
{
IgsCardInfo *igsc = card->driver;
if (igsc->copData)
KdUnmapDevice ((void *) igsc->copData, IGS_COP_DATA_LEN);
if (igsc->cop)
KdUnmapDevice ((void *) igsc->cop, sizeof (Cop5xxx));
if (igsc->vga)
KdUnmapDevice ((void *) igsc->vga, 64 * 1024);
if (igsc->frameBuffer)
KdUnmapDevice (igsc->frameBuffer, IGS_MEM);
xfree (igsc);
card->driver = 0;
}
KdCardFuncs igsFuncs = {
igsCardInit, /* cardinit */
igsScreenInit, /* scrinit */
igsInitScreen,
igsPreserve, /* preserve */
igsEnable, /* enable */
igsDPMS, /* dpms */
igsDisable, /* disable */
igsRestore, /* restore */
igsScreenFini, /* scrfini */
igsCardFini, /* cardfini */
igsCursorInit, /* initCursor */
igsCursorEnable, /* enableCursor */
igsCursorDisable, /* disableCursor */
igsCursorFini, /* finiCursor */
0, /* recolorCursor */
igsDrawInit, /* initAccel */
igsDrawEnable, /* enableAccel */
igsDrawSync, /* drawSync */
igsDrawDisable, /* disableAccel */
igsDrawFini, /* finiAccel */
igsGetColors, /* getColors */
igsPutColors, /* putColors */
};
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