hi I am using linux-2.6.11 (uclibc) kernel with ati framebuffer driver (RAGE XL). When i am using Xserver on my normaly it started and works, but it get crashed when moving windows on it, and we cannot predict when it crash.At the time of crash always get the debug message debug atyfb: Mach64 non-shadow register values: debug atyfb:Mach64 PLL register values: and print some register values on Xfree86 log message Fatal server error caught signal 4 (sometimes signal 11 or 10) ..Is it a problem with ATI driver ?(I changed my XFree86 version to check whether it is a problem of X but again crashed thats why i suspect ATI driver). my machine is a Xiaohu thinclient board ..and i could see some referance in xlinit.c .. regds Send instant messages to your online friends http://in.messenger.yahoo.com
Attachment:
XFree86.0.log
Description: 1065168681-XFree86.0.log
/*
* ATI Rage XL Initialization. Support for Xpert98 and Victoria
* PCI cards.
*
* Copyright (C) 2002 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* stevel@xxxxxxxxxx or source@xxxxxxxxxx
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <video/mach64.h>
#include "atyfb.h"
#define MPLL_GAIN 0xad
#define VPLL_GAIN 0xd5
enum {
VICTORIA = 0,
XPERT98,
NUM_XL_CARDS
};
extern const struct aty_pll_ops aty_pll_ct;
#define DEFAULT_CARD XPERT98
static int xl_card = DEFAULT_CARD;
static const struct xl_card_cfg_t {
int ref_crystal; // 10^4 Hz
int mem_type;
int mem_size;
u32 mem_cntl;
u32 ext_mem_cntl;
u32 mem_addr_config;
u32 bus_cntl;
u32 dac_cntl;
u32 hw_debug;
u32 custom_macro_cntl;
u8 dll2_cntl;
u8 pll_yclk_cntl;
} card_cfg[NUM_XL_CARDS] = {
// VICTORIA
{ 2700, SDRAM, 0x800000,
0x10757A3B, 0x64000C81, 0x00110202, 0x7b33A040,
0x82010102, 0x48803800, 0x005E0179,
0x50, 0x25
},
// XPERT98
{ 1432, WRAM, 0x800000,
0x00165A2B, 0xE0000CF1, 0x00200213, 0x7333A001,
0x8000000A, 0x48833800, 0x007F0779,
0x10, 0x19
}
};
typedef struct {
u8 lcd_reg;
u32 val;
} lcd_tbl_t;
static const lcd_tbl_t lcd_tbl[] = {
{ 0x01, 0x000520C0 },
{ 0x08, 0x02000408 },
{ 0x03, 0x00000F00 },
{ 0x00, 0x00000000 },
{ 0x02, 0x00000000 },
{ 0x04, 0x00000000 },
{ 0x05, 0x00000000 },
{ 0x06, 0x00000000 },
{ 0x33, 0x00000000 },
{ 0x34, 0x00000000 },
{ 0x35, 0x00000000 },
{ 0x36, 0x00000000 },
{ 0x37, 0x00000000 }
};
static void reset_gui(struct atyfb_par *par)
{
printk("debug xlinit: inside reset_gui\n");
aty_st_8(GEN_TEST_CNTL+1, 0x01, par);
aty_st_8(GEN_TEST_CNTL+1, 0x00, par);
aty_st_8(GEN_TEST_CNTL+1, 0x02, par);
mdelay(5);
printk("debug xlinit: exit reset_gui\n");
}
static void reset_sdram(struct atyfb_par *par)
{
u8 temp;
printk("debug xlinit: inside reset_sdram\n");
temp = aty_ld_8(EXT_MEM_CNTL, par);
temp |= 0x02;
aty_st_8(EXT_MEM_CNTL, temp, par); // MEM_SDRAM_RESET = 1b
temp |= 0x08;
aty_st_8(EXT_MEM_CNTL, temp, par); // MEM_CYC_TEST = 10b
temp |= 0x0c;
aty_st_8(EXT_MEM_CNTL, temp, par); // MEM_CYC_TEST = 11b
mdelay(5);
temp &= 0xf3;
aty_st_8(EXT_MEM_CNTL, temp, par); // MEM_CYC_TEST = 00b
temp &= 0xfd;
aty_st_8(EXT_MEM_CNTL, temp, par); // MEM_SDRAM_REST = 0b
mdelay(5);
printk("debug xlinit: exit reset_sdram\n");
}
static void init_dll(struct atyfb_par *par)
{
printk("debug xlinit: inside init_dll\n");
// enable DLL
aty_st_pll_ct(PLL_GEN_CNTL,
aty_ld_pll_ct(PLL_GEN_CNTL, par) & 0x7f,
par);
// reset DLL
aty_st_pll_ct(DLL_CNTL, 0x82, par);
aty_st_pll_ct(DLL_CNTL, 0xE2, par);
mdelay(5);
aty_st_pll_ct(DLL_CNTL, 0x82, par);
mdelay(6);
printk("debug xlinit: exit init_dll\n");
}
static void reset_clocks(struct atyfb_par *par, struct pll_ct *pll,
int hsync_enb)
{
printk("debug xlinit: inside reset_clocks\n");
reset_gui(par);
aty_st_pll_ct(MCLK_FB_DIV, pll->mclk_fb_div, par);
aty_st_pll_ct(SCLK_FB_DIV, pll->sclk_fb_div, par);
mdelay(15);
init_dll(par);
aty_st_8(GEN_TEST_CNTL+1, 0x00, par);
mdelay(5);
aty_st_8(CRTC_GEN_CNTL+3, 0x04, par);
mdelay(6);
reset_sdram(par);
aty_st_8(CRTC_GEN_CNTL+3,
hsync_enb ? 0x00 : 0x04, par);
aty_st_pll_ct(SPLL_CNTL2, pll->spll_cntl2, par);
aty_st_pll_ct(PLL_GEN_CNTL, pll->pll_gen_cntl, par);
aty_st_pll_ct(PLL_VCLK_CNTL, pll->pll_vclk_cntl, par);
printk("debug xlinit: exit reset_clocks\n");
}
#ifndef __i386__
/*
* These 3 routines (init_valid_pll_ct, init_dsp_gt, init_calc_pll_ct)
* are copied from the 2.4 initialization which properly initializes a
* bios-less chip.
*
* The i386 version includes code which uses the bios init instead, so
* these are unnecessary there.
*/
#define FAIL(x) do { printk(x "\n"); return -EINVAL; } while (0)
static int init_valid_pll_ct(const struct fb_info *info, u32 vclk_per,
struct pll_ct *pll)
{
#ifdef DEBUG
int pllmclk, pllsclk;
#endif
u32 q;
struct atyfb_par *par = (struct atyfb_par *) info->par;
printk("debug xlinit: inside init_valid_pll_ct\n");
pll->pll_ref_div = par->pll_per * 2 * 255 / par->ref_clk_per;
/* FIXME: use the VTB/GTB /3 post divider if it's better suited */
/* actually 8*q */
q = par->ref_clk_per*pll->pll_ref_div*4/par->mclk_per;
if (q < 16*8 || q > 255*8)
FAIL("mclk out of range");
else if (q < 32*8)
pll->mclk_post_div_real = 8;
else if (q < 64*8)
pll->mclk_post_div_real = 4;
else if (q < 128*8)
pll->mclk_post_div_real = 2;
else
pll->mclk_post_div_real = 1;
pll->sclk_fb_div = q*pll->mclk_post_div_real/8;
#ifdef DEBUG
pllsclk = (1000000 * 2 * pll->sclk_fb_div) /
(par->ref_clk_per * pll->pll_ref_div);
printk(__FUNCTION__ ": pllsclk=%d MHz, mclk=%d MHz\n",
pllsclk, pllsclk / pll->mclk_post_div_real);
#endif
pll->mclk_fb_mult = M64_HAS(MFB_FORCE_4) ? 4 : 2;
/* actually 8*q */
q = par->ref_clk_per * pll->pll_ref_div * 8 /
(pll->mclk_fb_mult * par->xclk_per);
if (q < 16*8 || q > 255*8)
FAIL("mclk out of range");
else if (q < 32*8)
pll->xclk_post_div_real = 8;
else if (q < 64*8)
pll->xclk_post_div_real = 4;
else if (q < 128*8)
pll->xclk_post_div_real = 2;
else
pll->xclk_post_div_real = 1;
pll->mclk_fb_div = q*pll->xclk_post_div_real/8;
#ifdef DEBUG
pllmclk = (1000000 * pll->mclk_fb_mult * pll->mclk_fb_div) /
(par->ref_clk_per * pll->pll_ref_div);
printk(__FUNCTION__ ": pllmclk=%d MHz, xclk=%d MHz\n",
pllmclk, pllmclk / pll->xclk_post_div_real);
#endif
/* FIXME: use the VTB/GTB /{3,6,12} post dividers if they're better suited */
q = par->ref_clk_per*pll->pll_ref_div*4/vclk_per; /* actually 8*q */
if (q < 16*8 || q > 255*8)
FAIL("vclk out of range");
else if (q < 32*8)
pll->vclk_post_div_real = 8;
else if (q < 64*8)
pll->vclk_post_div_real = 4;
else if (q < 128*8)
pll->vclk_post_div_real = 2;
else
pll->vclk_post_div_real = 1;
pll->vclk_fb_div = q*pll->vclk_post_div_real/8;
printk("debug xlinit: exit init_valid_pll_ct\n");
return 0;
}
static int init_dsp_gt(const struct fb_info *info, u32 bpp,
struct pll_ct *pll)
{
struct atyfb_par *par = (struct atyfb_par *) info->par;
u32 dsp_xclks_per_row, dsp_loop_latency, dsp_precision, dsp_off, dsp_on;
u32 xclks_per_row, fifo_off, fifo_on, y, fifo_size;
u32 memcntl, n, t_pfc, t_rp, t_ras, t_rcd, t_crd, t_rcc, t_lat;
#ifdef DEBUG
printk(__FUNCTION__ ": mclk_fb_mult=%d\n", pll->mclk_fb_mult);
#endif
printk("debug xlinit: inside init_dsp_gt\n");
/* (64*xclk/vclk/bpp)<<11 = xclocks_per_row<<11 */
xclks_per_row = ((u32)pll->mclk_fb_mult * (u32)pll->mclk_fb_div *
(u32)pll->vclk_post_div_real * 64) << 11;
xclks_per_row /=
(2 * (u32)pll->vclk_fb_div * (u32)pll->xclk_post_div_real * bpp);
if (xclks_per_row < (1<<11))
FAIL("Dotclock too high");
if (M64_HAS(FIFO_32)) {
fifo_size = 32;
dsp_loop_latency = 2;
} else {
fifo_size = 24;
dsp_loop_latency = 0;
}
dsp_precision = 0;
y = (xclks_per_row*fifo_size)>>11;
while (y) {
y >>= 1;
dsp_precision++;
}
dsp_precision -= 5;
/* fifo_off<<6 */
fifo_off = ((xclks_per_row*(fifo_size-1))>>5); // + (3<<6);
if (info->fix.smem_len > 1*1024*1024) {
switch (par->ram_type) {
case WRAM:
/* >1 MB WRAM */
dsp_loop_latency += 9;
n = 4;
break;
case SDRAM:
case SGRAM:
/* >1 MB SDRAM */
dsp_loop_latency += 8;
n = 2;
break;
default:
/* >1 MB DRAM */
dsp_loop_latency += 6;
n = 3;
break;
}
} else {
if (par->ram_type >= SDRAM) {
/* <2 MB SDRAM */
dsp_loop_latency += 9;
n = 2;
} else {
/* <2 MB DRAM */
dsp_loop_latency += 8;
n = 3;
}
}
memcntl = aty_ld_le32(MEM_CNTL, par);
t_rcd = ((memcntl >> 10) & 0x03) + 1;
t_crd = ((memcntl >> 12) & 0x01);
t_rp = ((memcntl >> 8) & 0x03) + 1;
t_ras = ((memcntl >> 16) & 0x07) + 1;
t_lat = (memcntl >> 4) & 0x03;
t_pfc = t_rp + t_rcd + t_crd;
t_rcc = max(t_rp + t_ras, t_pfc + n);
/* fifo_on<<6 */
fifo_on = (2 * t_rcc + t_pfc + n - 1) << 6;
dsp_xclks_per_row = xclks_per_row>>dsp_precision;
dsp_on = fifo_on>>dsp_precision;
dsp_off = fifo_off>>dsp_precision;
pll->dsp_config = (dsp_xclks_per_row & 0x3fff) |
((dsp_loop_latency & 0xf)<<16) |
((dsp_precision & 7)<<20);
pll->dsp_on_off = (dsp_off & 0x7ff) | ((dsp_on & 0x7ff)<<16);
printk("debug xlinit: exit init_dsp_gt\n");
return 0;
}
void init_calc_pll_ct(const struct fb_info *info, struct pll_ct *pll)
{
struct atyfb_par *par = (struct atyfb_par *) info->par;
u8 xpostdiv = 0;
u8 mpostdiv = 0;
u8 vpostdiv = 0;
printk("debug xlinit: inside init_calc_pll_ct\n");
if (M64_HAS(SDRAM_MAGIC_PLL) && (par->ram_type >= SDRAM))
pll->pll_gen_cntl = 0x64; /* mclk = sclk */
else
pll->pll_gen_cntl = 0xe4; /* mclk = sclk */
switch (pll->mclk_post_div_real) {
case 1:
mpostdiv = 0;
break;
case 2:
mpostdiv = 1;
break;
case 4:
mpostdiv = 2;
break;
case 8:
mpostdiv = 3;
break;
}
pll->spll_cntl2 = mpostdiv << 4; /* sclk == pllsclk / mpostdiv */
switch (pll->xclk_post_div_real) {
case 1:
xpostdiv = 0;
break;
case 2:
xpostdiv = 1;
break;
case 3:
xpostdiv = 4;
break;
case 4:
xpostdiv = 2;
break;
case 8:
xpostdiv = 3;
break;
}
if (M64_HAS(MAGIC_POSTDIV))
pll->pll_ext_cntl = 0;
else
pll->pll_ext_cntl = xpostdiv; /* xclk == pllmclk / xpostdiv */
if (pll->mclk_fb_mult == 4)
pll->pll_ext_cntl |= 0x08;
switch (pll->vclk_post_div_real) {
case 2:
vpostdiv = 1;
break;
case 3:
pll->pll_ext_cntl |= 0x10;
case 1:
vpostdiv = 0;
break;
case 6:
pll->pll_ext_cntl |= 0x10;
case 4:
vpostdiv = 2;
break;
case 12:
pll->pll_ext_cntl |= 0x10;
case 8:
vpostdiv = 3;
break;
}
pll->pll_vclk_cntl = 0x03; /* VCLK = PLL_VCLK/VCLKx_POST */
pll->vclk_post_div = vpostdiv;
printk("debug xlinit: exit init_calc_pll_ct\n");
}
#endif // __i386__
int atyfb_xl_init(struct fb_info *info)
{
const struct xl_card_cfg_t * card = &card_cfg[xl_card];
struct atyfb_par *par = (struct atyfb_par *) info->par;
union aty_pll pll;
int err;
u32 temp;
printk("debug xlinit: inside atyfb_xl_init\n");
// For the XiaoHu, at least, the STAT0 register is 0x95 at boot
// ONLY. On power-button reset, we do NOT want to do this init.
if( (aty_ld_8(CONFIG_STAT0, par) & 0xff) != 0x95 ){
printk("debug xlinit: exit atyfb_xl_init xiaohu STAT0 register is not 0x95\n");
return 0;
aty_st_8(CONFIG_STAT0, 0x85, par);
mdelay(10);
/*
* The following needs to be set before the call
* to var_to_pll() below. They'll be re-set again
* to the same values in aty_init().
*/
par->ref_clk_per = 100000000UL/card->ref_crystal;
par->ram_type = card->mem_type;
info->fix.smem_len = card->mem_size;
if (xl_card == VICTORIA) {
// the MCLK, XCLK are 120MHz on victoria card
par->mclk_per = 1000000/120;
par->xclk_per = 1000000/120;
par->features &= ~M64F_MFB_FORCE_4;
}
/*
* Calculate mclk and xclk dividers, etc. The passed
* pixclock and bpp values don't matter yet, the vclk
* isn't programmed until later.
*/
#ifndef __i386__
// These were stolen from the working 2.4 kernel xlinit.c
// This is what 'var_to_pll' used to do.
if( (err = init_valid_pll_ct( info, 39726, &(pll.ct) ) ) )
return err;
if( M64_HAS(GTB_DSP) && (err = init_dsp_gt( info, 8, &(pll.ct) ) ) )
return err;
init_calc_pll_ct( info, &(pll.ct) );
#else
// The current 'var_to_pll' assumes you have already called
// 'init_from_bios' which only occurrs for __i386__
if ((err = aty_pll_ct.var_to_pll(info, 39726, 8, &pll)))
return err;
#endif
aty_st_pll_ct(LVDS_CNTL0, 0x00, par);
aty_st_pll_ct(DLL2_CNTL, card->dll2_cntl, par);
aty_st_pll_ct(V2PLL_CNTL, 0x10, par);
aty_st_pll_ct(MPLL_CNTL, MPLL_GAIN, par);
aty_st_pll_ct(VPLL_CNTL, VPLL_GAIN, par);
aty_st_pll_ct(PLL_VCLK_CNTL, 0x00, par);
aty_st_pll_ct(VFC_CNTL, 0x1B, par);
aty_st_pll_ct(PLL_REF_DIV, pll.ct.pll_ref_div, par);
aty_st_pll_ct(PLL_EXT_CNTL, pll.ct.pll_ext_cntl, par);
aty_st_pll_ct(SPLL_CNTL2, 0x03, par);
aty_st_pll_ct(PLL_GEN_CNTL, 0x44, par);
reset_clocks(par, &pll.ct, 0);
mdelay(10);
aty_st_pll_ct(VCLK_POST_DIV, 0x03, par);
aty_st_pll_ct(VCLK0_FB_DIV, 0xDA, par);
aty_st_pll_ct(VCLK_POST_DIV, 0x0F, par);
aty_st_pll_ct(VCLK1_FB_DIV, 0xF5, par);
aty_st_pll_ct(VCLK_POST_DIV, 0x3F, par);
aty_st_pll_ct(PLL_EXT_CNTL, 0x40 | pll.ct.pll_ext_cntl, par);
aty_st_pll_ct(VCLK2_FB_DIV, 0x00, par);
aty_st_pll_ct(VCLK_POST_DIV, 0xFF, par);
aty_st_pll_ct(PLL_EXT_CNTL, 0xC0 | pll.ct.pll_ext_cntl, par);
aty_st_pll_ct(VCLK3_FB_DIV, 0x00, par);
aty_st_8(BUS_CNTL, 0x01, par);
aty_st_le32(BUS_CNTL, card->bus_cntl | 0x08000000, par);
aty_st_le32(CRTC_GEN_CNTL, 0x04000200, par);
aty_st_le16(CONFIG_STAT0, 0x0020, par);
aty_st_le32(MEM_CNTL, 0x10151A33, par);
aty_st_le32(EXT_MEM_CNTL, 0xE0000C01, par);
aty_st_le16(CRTC_GEN_CNTL+2, 0x0000, par);
aty_st_le32(DAC_CNTL, card->dac_cntl, par);
aty_st_le16(GEN_TEST_CNTL, 0x0100, par);
aty_st_le32(CUSTOM_MACRO_CNTL, 0x003C0171, par);
aty_st_le32(MEM_BUF_CNTL, 0x00382848, par);
aty_st_le32(HW_DEBUG, card->hw_debug, par);
aty_st_le16(MEM_ADDR_CONFIG, 0x0000, par);
aty_st_le16(GP_IO+2, 0x0000, par);
aty_st_le16(GEN_TEST_CNTL, 0x0000, par);
aty_st_le16(EXT_DAC_REGS+2, 0x0000, par);
aty_st_le32(CRTC_INT_CNTL, 0x00000000, par);
aty_st_le32(TIMER_CONFIG, 0x00000000, par);
aty_st_le32(0xEC, 0x00000000, par);
aty_st_le32(0xFC, 0x00000000, par);
#if defined(CONFIG_PM) || defined(CONFIG_PMAC_BACKLIGHT) || defined (CONFIG_FB_ATY_GENERIC_LCD)
{
int i;
for (i=0; i<sizeof(lcd_tbl)/sizeof(lcd_tbl_t); i++) {
aty_st_lcd(lcd_tbl[i].lcd_reg, lcd_tbl[i].val, par);
}
}
#endif
aty_st_le16(CONFIG_STAT0, 0x00A4, par);
mdelay(10);
aty_st_8(BUS_CNTL+1, 0xA0, par);
mdelay(10);
reset_clocks(par, &pll.ct, 1);
mdelay(10);
// something about power management
aty_st_8(LCD_INDEX, 0x08, par);
aty_st_8(LCD_DATA, 0x0A, par);
aty_st_8(LCD_INDEX, 0x08, par);
aty_st_8(LCD_DATA+3, 0x02, par);
aty_st_8(LCD_INDEX, 0x08, par);
aty_st_8(LCD_DATA, 0x0B, par);
mdelay(2);
// enable display requests, enable CRTC
aty_st_8(CRTC_GEN_CNTL+3, 0x02, par);
// disable display
aty_st_8(CRTC_GEN_CNTL, 0x40, par);
// disable display requests, disable CRTC
aty_st_8(CRTC_GEN_CNTL+3, 0x04, par);
mdelay(10);
aty_st_pll_ct(PLL_YCLK_CNTL, 0x25, par);
aty_st_le16(CUSTOM_MACRO_CNTL, 0x0179, par);
aty_st_le16(CUSTOM_MACRO_CNTL+2, 0x005E, par);
aty_st_le16(CUSTOM_MACRO_CNTL+2, card->custom_macro_cntl>>16, par);
aty_st_8(CUSTOM_MACRO_CNTL+1,
(card->custom_macro_cntl>>8) & 0xff, par);
aty_st_le32(MEM_ADDR_CONFIG, card->mem_addr_config, par);
aty_st_le32(MEM_CNTL, card->mem_cntl, par);
aty_st_le32(EXT_MEM_CNTL, card->ext_mem_cntl, par);
aty_st_8(CONFIG_STAT0, 0xA0 | card->mem_type, par);
aty_st_pll_ct(PLL_YCLK_CNTL, 0x01, par);
mdelay(15);
aty_st_pll_ct(PLL_YCLK_CNTL, card->pll_yclk_cntl, par);
mdelay(1);
reset_clocks(par, &pll.ct, 0);
mdelay(50);
reset_clocks(par, &pll.ct, 0);
mdelay(50);
// enable extended register block
aty_st_8(BUS_CNTL+3, 0x7B, par);
mdelay(1);
// disable extended register block
aty_st_8(BUS_CNTL+3, 0x73, par);
aty_st_8(CONFIG_STAT0, 0x80 | card->mem_type, par);
// disable display requests, disable CRTC
aty_st_8(CRTC_GEN_CNTL+3, 0x04, par);
// disable mapping registers in VGA aperture
aty_st_8(CONFIG_CNTL, aty_ld_8(CONFIG_CNTL, par) & ~0x04, par);
mdelay(50);
// enable display requests, enable CRTC
aty_st_8(CRTC_GEN_CNTL+3, 0x02, par);
// make GPIO's 14,15,16 all inputs
aty_st_8(LCD_INDEX, 0x07, par);
aty_st_8(LCD_DATA+3, 0x00, par);
// enable the display
aty_st_8(CRTC_GEN_CNTL, 0x00, par);
mdelay(17);
// reset the memory controller
aty_st_8(GEN_TEST_CNTL+1, 0x02, par);
mdelay(15);
aty_st_8(GEN_TEST_CNTL+1, 0x00, par);
mdelay(30);
// enable extended register block
aty_st_8(BUS_CNTL+3,
(u8)(aty_ld_8(BUS_CNTL+3, par) | 0x08),
par);
// set FIFO size to 512 (PIO)
aty_st_le32(GUI_CNTL,
aty_ld_le32(GUI_CNTL, par) & ~0x3,
par);
// enable CRT and disable lcd
aty_st_8(LCD_INDEX, 0x01, par);
temp = aty_ld_le32(LCD_DATA, par);
temp = (temp | 0x01) & ~0x02;
aty_st_le32(LCD_DATA, temp, par);
printk("debug xlinit: exit success atyfb_xl_init\n");
return 0;
}
