Quelle s3fb.c
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/*
* linux/drivers/video/s3fb.c -- Frame buffer device driver for S3 Trio/Virge
*
* Copyright (c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*
* Code is based on David Boucher's viafb (http://davesdomain.org.uk/viafb/)
* which is based on the code of neofb.
*/
#include <linux/aperture.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/svga.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/console.h>
/* Why should fb driver call console functions? because console_lock() */
#include <video/vga.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
struct s3fb_info {
int chip, rev, mclk_freq;
int wc_cookie;
struct vgastate state;
struct mutex open_lock;
unsigned int ref_count;
u32 pseudo_palette[
16 ];
#ifdef CONFIG_FB_S3_DDC
u8 __iomem *mmio;
bool ddc_registered;
struct i2c_adapter ddc_adapter;
struct i2c_algo_bit_data ddc_algo;
#endif
};
/* ------------------------------------------------------------------------- */
static const struct svga_fb_format s3fb_formats[] = {
{
0 , {
0 ,
6 ,
0 }, {
0 ,
6 ,
0 }, {
0 ,
6 ,
0 }, {
0 ,
0 ,
0 },
0 ,
FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP4, FB_VISUAL_PSEUDOCOLOR,
8 ,
16 },
{
4 , {
0 ,
4 ,
0 }, {
0 ,
4 ,
0 }, {
0 ,
4 ,
0 }, {
0 ,
0 ,
0 },
0 ,
FB_TYPE_PACKED_PIXELS,
0 , FB_VISUAL_PSEUDOCOLOR,
8 ,
16 },
{
4 , {
0 ,
4 ,
0 }, {
0 ,
4 ,
0 }, {
0 ,
4 ,
0 }, {
0 ,
0 ,
0 },
1 ,
FB_TYPE_INTERLEAVED_PLANES,
1 , FB_VISUAL_PSEUDOCOLOR,
8 ,
16 },
{
8 , {
0 ,
8 ,
0 }, {
0 ,
8 ,
0 }, {
0 ,
8 ,
0 }, {
0 ,
0 ,
0 },
0 ,
FB_TYPE_PACKED_PIXELS,
0 , FB_VISUAL_PSEUDOCOLOR,
4 ,
8 },
{
16 , {
10 ,
5 ,
0 }, {
5 ,
5 ,
0 }, {
0 ,
5 ,
0 }, {
0 ,
0 ,
0 },
0 ,
FB_TYPE_PACKED_PIXELS,
0 , FB_VISUAL_TRUECOLOR,
2 ,
4 },
{
16 , {
11 ,
5 ,
0 }, {
5 ,
6 ,
0 }, {
0 ,
5 ,
0 }, {
0 ,
0 ,
0 },
0 ,
FB_TYPE_PACKED_PIXELS,
0 , FB_VISUAL_TRUECOLOR,
2 ,
4 },
{
24 , {
16 ,
8 ,
0 }, {
8 ,
8 ,
0 }, {
0 ,
8 ,
0 }, {
0 ,
0 ,
0 },
0 ,
FB_TYPE_PACKED_PIXELS,
0 , FB_VISUAL_TRUECOLOR,
1 ,
2 },
{
32 , {
16 ,
8 ,
0 }, {
8 ,
8 ,
0 }, {
0 ,
8 ,
0 }, {
0 ,
0 ,
0 },
0 ,
FB_TYPE_PACKED_PIXELS,
0 , FB_VISUAL_TRUECOLOR,
1 ,
2 },
SVGA_FORMAT_END
};
static const struct svga_pll s3_pll = {
3 ,
129 ,
3 ,
33 ,
0 ,
3 ,
35000 ,
240000 ,
14318 };
static const struct svga_pll s3_trio3d_pll = {
3 ,
129 ,
3 ,
31 ,
0 ,
4 ,
230000 ,
460000 ,
14318 };
static const int s3_memsizes[] = {
4096 ,
0 ,
3072 ,
8192 ,
2048 ,
6144 ,
1024 ,
512 };
static const char *
const s3_names[] = {
"S3 Unknown" ,
"S3 Trio32" ,
"S3 Trio64" ,
"S3 Trio64V+" ,
"S3 Trio64UV+" ,
"S3 Trio64V2/DX" ,
"S3 Trio64V2/GX" ,
"S3 Plato/PX" ,
"S3 Aurora64V+" ,
"S3 Virge" ,
"S3 Virge/VX" ,
"S3 Virge/DX" ,
"S3 Virge/GX" ,
"S3 Virge/GX2" ,
"S3 Virge/GX2+" ,
"" ,
"S3 Trio3D/1X" ,
"S3 Trio3D/2X" ,
"S3 Trio3D/2X" ,
"S3 Trio3D" ,
"S3 Virge/MX" };
#define CHIP_UNKNOWN
0 x00
#define CHIP_732_TRIO32
0 x01
#define CHIP_764_TRIO64
0 x02
#define CHIP_765_TRIO64VP
0 x03
#define CHIP_767_TRIO64UVP
0 x04
#define CHIP_775_TRIO64V2_DX
0 x05
#define CHIP_785_TRIO64V2_GX
0 x06
#define CHIP_551_PLATO_PX
0 x07
#define CHIP_M65_AURORA64VP
0 x08
#define CHIP_325_VIRGE
0 x09
#define CHIP_988_VIRGE_VX
0 x0A
#define CHIP_375_VIRGE_DX
0 x0B
#define CHIP_385_VIRGE_GX
0 x0C
#define CHIP_357_VIRGE_GX2
0 x0D
#define CHIP_359_VIRGE_GX2P
0 x0E
#define CHIP_360_TRIO3D_1X
0 x10
#define CHIP_362_TRIO3D_2X
0 x11
#define CHIP_368_TRIO3D_2X
0 x12
#define CHIP_365_TRIO3D
0 x13
#define CHIP_260_VIRGE_MX
0 x14
#define CHIP_XXX_TRIO
0 x80
#define CHIP_XXX_TRIO64V2_DXGX
0 x81
#define CHIP_XXX_VIRGE_DXGX
0 x82
#define CHIP_36X_TRIO3D_1X_2X
0 x83
#define CHIP_UNDECIDED_FLAG
0 x80
#define CHIP_MASK
0 xFF
#define MMIO_OFFSET
0 x1000000
#define MMIO_SIZE
0 x10000
/* CRT timing register sets */
static const struct vga_regset s3_h_total_regs[] = {{
0 x00,
0 ,
7 }, {
0 x5D,
0 ,
0 }, VGA_REGSET_E
ND};
static const struct vga_regset s3_h_display_regs[] = {{0 x01, 0 , 7 }, {0 x5D, 1 , 1 }, VGA_REGSET_END};
static const struct vga_regset s3_h_blank_start_regs[] = {{0 x02, 0 , 7 }, {0 x5D, 2 , 2 }, VGA_REGSET_END};
static const struct vga_regset s3_h_blank_end_regs[] = {{0 x03, 0 , 4 }, {0 x05, 7 , 7 }, VGA_REGSET_END};
static const struct vga_regset s3_h_sync_start_regs[] = {{0 x04, 0 , 7 }, {0 x5D, 4 , 4 }, VGA_REGSET_END};
static const struct vga_regset s3_h_sync_end_regs[] = {{0 x05, 0 , 4 }, VGA_REGSET_END};
static const struct vga_regset s3_v_total_regs[] = {{0 x06, 0 , 7 }, {0 x07, 0 , 0 }, {0 x07, 5 , 5 }, {0 x5E, 0 , 0 }, VGA_REGSET_END};
static const struct vga_regset s3_v_display_regs[] = {{0 x12, 0 , 7 }, {0 x07, 1 , 1 }, {0 x07, 6 , 6 }, {0 x5E, 1 , 1 }, VGA_REGSET_END};
static const struct vga_regset s3_v_blank_start_regs[] = {{0 x15, 0 , 7 }, {0 x07, 3 , 3 }, {0 x09, 5 , 5 }, {0 x5E, 2 , 2 }, VGA_REGSET_END};
static const struct vga_regset s3_v_blank_end_regs[] = {{0 x16, 0 , 7 }, VGA_REGSET_END};
static const struct vga_regset s3_v_sync_start_regs[] = {{0 x10, 0 , 7 }, {0 x07, 2 , 2 }, {0 x07, 7 , 7 }, {0 x5E, 4 , 4 }, VGA_REGSET_END};
static const struct vga_regset s3_v_sync_end_regs[] = {{0 x11, 0 , 3 }, VGA_REGSET_END};
static const struct vga_regset s3_line_compare_regs[] = {{0 x18, 0 , 7 }, {0 x07, 4 , 4 }, {0 x09, 6 , 6 }, {0 x5E, 6 , 6 }, VGA_REGSET_END};
static const struct vga_regset s3_start_address_regs[] = {{0 x0d, 0 , 7 }, {0 x0c, 0 , 7 }, {0 x69, 0 , 4 }, VGA_REGSET_END};
static const struct vga_regset s3_offset_regs[] = {{0 x13, 0 , 7 }, {0 x51, 4 , 5 }, VGA_REGSET_END}; /* set 0x43 bit 2 to 0 */
static const struct vga_regset s3_dtpc_regs[] = {{0 x3B, 0 , 7 }, {0 x5D, 6 , 6 }, VGA_REGSET_END};
static const struct svga_timing_regs s3_timing_regs = {
s3_h_total_regs, s3_h_display_regs, s3_h_blank_start_regs,
s3_h_blank_end_regs, s3_h_sync_start_regs, s3_h_sync_end_regs,
s3_v_total_regs, s3_v_display_regs, s3_v_blank_start_regs,
s3_v_blank_end_regs, s3_v_sync_start_regs, s3_v_sync_end_regs,
};
/* ------------------------------------------------------------------------- */
/* Module parameters */
static char *mode_option;
static int mtrr = 1 ;
static int fasttext = 1 ;
MODULE_AUTHOR("(c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org>" );
MODULE_LICENSE("GPL" );
MODULE_DESCRIPTION("fbdev driver for S3 Trio/Virge" );
module_param(mode_option, charp, 0444 );
MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)" );
module_param_named(mode, mode_option, charp, 0444 );
MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc) (deprecated)" );
module_param(mtrr, int , 0444 );
MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)" );
module_param(fasttext, int , 0644 );
MODULE_PARM_DESC(fasttext, "Enable S3 fast text mode (1=enable, 0=disable, default=1)" );
/* ------------------------------------------------------------------------- */
#ifdef CONFIG_FB_S3_DDC
#define DDC_REG 0 xaa /* Trio 3D/1X/2X */
#define DDC_MMIO_REG 0 xff20 /* all other chips */
#define DDC_SCL_OUT (1 << 0 )
#define DDC_SDA_OUT (1 << 1 )
#define DDC_SCL_IN (1 << 2 )
#define DDC_SDA_IN (1 << 3 )
#define DDC_DRIVE_EN (1 << 4 )
static bool s3fb_ddc_needs_mmio(int chip)
{
return !(chip == CHIP_360_TRIO3D_1X ||
chip == CHIP_362_TRIO3D_2X ||
chip == CHIP_368_TRIO3D_2X);
}
static u8 s3fb_ddc_read(struct s3fb_info *par)
{
if (s3fb_ddc_needs_mmio(par->chip))
return readb(par->mmio + DDC_MMIO_REG);
else
return vga_rcrt(par->state.vgabase, DDC_REG);
}
static void s3fb_ddc_write(struct s3fb_info *par, u8 val)
{
if (s3fb_ddc_needs_mmio(par->chip))
writeb(val, par->mmio + DDC_MMIO_REG);
else
vga_wcrt(par->state.vgabase, DDC_REG, val);
}
static void s3fb_ddc_setscl(void *data, int val)
{
struct s3fb_info *par = data;
unsigned char reg;
reg = s3fb_ddc_read(par) | DDC_DRIVE_EN;
if (val)
reg |= DDC_SCL_OUT;
else
reg &= ~DDC_SCL_OUT;
s3fb_ddc_write(par, reg);
}
static void s3fb_ddc_setsda(void *data, int val)
{
struct s3fb_info *par = data;
unsigned char reg;
reg = s3fb_ddc_read(par) | DDC_DRIVE_EN;
if (val)
reg |= DDC_SDA_OUT;
else
reg &= ~DDC_SDA_OUT;
s3fb_ddc_write(par, reg);
}
static int s3fb_ddc_getscl(void *data)
{
struct s3fb_info *par = data;
return !!(s3fb_ddc_read(par) & DDC_SCL_IN);
}
static int s3fb_ddc_getsda(void *data)
{
struct s3fb_info *par = data;
return !!(s3fb_ddc_read(par) & DDC_SDA_IN);
}
static int s3fb_setup_ddc_bus(struct fb_info *info)
{
struct s3fb_info *par = info->par;
strscpy(par->ddc_adapter.name, info->fix.id,
sizeof (par->ddc_adapter.name));
par->ddc_adapter.owner = THIS_MODULE;
par->ddc_adapter.algo_data = &par->ddc_algo;
par->ddc_adapter.dev.parent = info->device;
par->ddc_algo.setsda = s3fb_ddc_setsda;
par->ddc_algo.setscl = s3fb_ddc_setscl;
par->ddc_algo.getsda = s3fb_ddc_getsda;
par->ddc_algo.getscl = s3fb_ddc_getscl;
par->ddc_algo.udelay = 10 ;
par->ddc_algo.timeout = 20 ;
par->ddc_algo.data = par;
i2c_set_adapdata(&par->ddc_adapter, par);
/*
* some Virge cards have external MUX to switch chip I2C bus between
* DDC and extension pins - switch it do DDC
*/
/* vga_wseq(par->state.vgabase, 0x08, 0x06); - not needed, already unlocked */
if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_260_VIRGE_MX)
svga_wseq_mask(par->state.vgabase, 0 x0d, 0 x01, 0 x03);
else
svga_wseq_mask(par->state.vgabase, 0 x0d, 0 x00, 0 x03);
/* some Virge need this or the DDC is ignored */
svga_wcrt_mask(par->state.vgabase, 0 x5c, 0 x03, 0 x03);
return i2c_bit_add_bus(&par->ddc_adapter);
}
#endif /* CONFIG_FB_S3_DDC */
/* ------------------------------------------------------------------------- */
/* Set font in S3 fast text mode */
static void s3fb_settile_fast(struct fb_info *info, struct fb_tilemap *map)
{
const u8 *font = map->data;
u8 __iomem *fb = (u8 __iomem *) info->screen_base;
int i, c;
if ((map->width != 8 ) || (map->height != 16 ) ||
(map->depth != 1 ) || (map->length != 256 )) {
fb_err(info, "unsupported font parameters: width %d, height %d, depth %d, length %d\n" ,
map->width, map->height, map->depth, map->length);
return ;
}
fb += 2 ;
for (i = 0 ; i < map->height; i++) {
for (c = 0 ; c < map->length; c++) {
fb_writeb(font[c * map->height + i], fb + c * 4 );
}
fb += 1024 ;
}
}
static void s3fb_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor)
{
struct s3fb_info *par = info->par;
svga_tilecursor(par->state.vgabase, info, cursor);
}
static struct fb_tile_ops s3fb_tile_ops = {
.fb_settile = svga_settile,
.fb_tilecopy = svga_tilecopy,
.fb_tilefill = svga_tilefill,
.fb_tileblit = svga_tileblit,
.fb_tilecursor = s3fb_tilecursor,
.fb_get_tilemax = svga_get_tilemax,
};
static struct fb_tile_ops s3fb_fast_tile_ops = {
.fb_settile = s3fb_settile_fast,
.fb_tilecopy = svga_tilecopy,
.fb_tilefill = svga_tilefill,
.fb_tileblit = svga_tileblit,
.fb_tilecursor = s3fb_tilecursor,
.fb_get_tilemax = svga_get_tilemax,
};
/* ------------------------------------------------------------------------- */
/* image data is MSB-first, fb structure is MSB-first too */
static inline u32 expand_color(u32 c)
{
return ((c & 1 ) | ((c & 2 ) << 7 ) | ((c & 4 ) << 14 ) | ((c & 8 ) << 21 )) * 0 xFF;
}
/* s3fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */
static void s3fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image)
{
u32 fg = expand_color(image->fg_color);
u32 bg = expand_color(image->bg_color);
const u8 *src1, *src;
u8 __iomem *dst1;
u32 __iomem *dst;
u32 val;
int x, y;
src1 = image->data;
dst1 = info->screen_base + (image->dy * info->fix.line_length)
+ ((image->dx / 8 ) * 4 );
for (y = 0 ; y < image->height; y++) {
src = src1;
dst = (u32 __iomem *) dst1;
for (x = 0 ; x < image->width; x += 8 ) {
val = *(src++) * 0 x01010101;
val = (val & fg) | (~val & bg);
fb_writel(val, dst++);
}
src1 += image->width / 8 ;
dst1 += info->fix.line_length;
}
}
/* s3fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */
static void s3fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
u32 fg = expand_color(rect->color);
u8 __iomem *dst1;
u32 __iomem *dst;
int x, y;
dst1 = info->screen_base + (rect->dy * info->fix.line_length)
+ ((rect->dx / 8 ) * 4 );
for (y = 0 ; y < rect->height; y++) {
dst = (u32 __iomem *) dst1;
for (x = 0 ; x < rect->width; x += 8 ) {
fb_writel(fg, dst++);
}
dst1 += info->fix.line_length;
}
}
/* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */
static inline u32 expand_pixel(u32 c)
{
return (((c & 1 ) << 24 ) | ((c & 2 ) << 27 ) | ((c & 4 ) << 14 ) | ((c & 8 ) << 17 ) |
((c & 16 ) << 4 ) | ((c & 32 ) << 7 ) | ((c & 64 ) >> 6 ) | ((c & 128 ) >> 3 )) * 0 xF;
}
/* s3fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */
static void s3fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image)
{
u32 fg = image->fg_color * 0 x11111111;
u32 bg = image->bg_color * 0 x11111111;
const u8 *src1, *src;
u8 __iomem *dst1;
u32 __iomem *dst;
u32 val;
int x, y;
src1 = image->data;
dst1 = info->screen_base + (image->dy * info->fix.line_length)
+ ((image->dx / 8 ) * 4 );
for (y = 0 ; y < image->height; y++) {
src = src1;
dst = (u32 __iomem *) dst1;
for (x = 0 ; x < image->width; x += 8 ) {
val = expand_pixel(*(src++));
val = (val & fg) | (~val & bg);
fb_writel(val, dst++);
}
src1 += image->width / 8 ;
dst1 += info->fix.line_length;
}
}
static void s3fb_imageblit(struct fb_info *info, const struct fb_image *image)
{
if ((info->var.bits_per_pixel == 4 ) && (image->depth == 1 )
&& ((image->width % 8 ) == 0 ) && ((image->dx % 8 ) == 0 )) {
if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)
s3fb_iplan_imageblit(info, image);
else
s3fb_cfb4_imageblit(info, image);
} else
cfb_imageblit(info, image);
}
static void s3fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
if ((info->var.bits_per_pixel == 4 )
&& ((rect->width % 8 ) == 0 ) && ((rect->dx % 8 ) == 0 )
&& (info->fix.type == FB_TYPE_INTERLEAVED_PLANES))
s3fb_iplan_fillrect(info, rect);
else
cfb_fillrect(info, rect);
}
/* ------------------------------------------------------------------------- */
static void s3_set_pixclock(struct fb_info *info, u32 pixclock)
{
struct s3fb_info *par = info->par;
u16 m, n, r;
u8 regval;
int rv;
rv = svga_compute_pll((par->chip == CHIP_365_TRIO3D) ? &s3_trio3d_pll : &s3_pll,
1000000000 / pixclock, &m, &n, &r, info->node);
if (rv < 0 ) {
fb_err(info, "cannot set requested pixclock, keeping old value\n" );
return ;
}
/* Set VGA misc register */
regval = vga_r(par->state.vgabase, VGA_MIS_R);
vga_w(par->state.vgabase, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD);
/* Set S3 clock registers */
if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_260_VIRGE_MX) {
vga_wseq(par->state.vgabase, 0 x12, (n - 2 ) | ((r & 3 ) << 6 )); /* n and two bits of r */
vga_wseq(par->state.vgabase, 0 x29, r >> 2 ); /* remaining highest bit of r */
} else
vga_wseq(par->state.vgabase, 0 x12, (n - 2 ) | (r << 5 ));
vga_wseq(par->state.vgabase, 0 x13, m - 2 );
udelay(1000 );
/* Activate clock - write 0, 1, 0 to seq/15 bit 5 */
regval = vga_rseq (par->state.vgabase, 0 x15); /* | 0x80; */
vga_wseq(par->state.vgabase, 0 x15, regval & ~(1 <<5 ));
vga_wseq(par->state.vgabase, 0 x15, regval | (1 <<5 ));
vga_wseq(par->state.vgabase, 0 x15, regval & ~(1 <<5 ));
}
/* Open framebuffer */
static int s3fb_open(struct fb_info *info, int user)
{
struct s3fb_info *par = info->par;
mutex_lock(&(par->open_lock));
if (par->ref_count == 0 ) {
void __iomem *vgabase = par->state.vgabase;
memset(&(par->state), 0 , sizeof (struct vgastate));
par->state.vgabase = vgabase;
par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP;
par->state.num_crtc = 0 x70;
par->state.num_seq = 0 x20;
save_vga(&(par->state));
}
par->ref_count++;
mutex_unlock(&(par->open_lock));
return 0 ;
}
/* Close framebuffer */
static int s3fb_release(struct fb_info *info, int user)
{
struct s3fb_info *par = info->par;
mutex_lock(&(par->open_lock));
if (par->ref_count == 0 ) {
mutex_unlock(&(par->open_lock));
return -EINVAL;
}
if (par->ref_count == 1 )
restore_vga(&(par->state));
par->ref_count--;
mutex_unlock(&(par->open_lock));
return 0 ;
}
/* Validate passed in var */
static int s3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct s3fb_info *par = info->par;
int rv, mem, step;
u16 m, n, r;
if (!var->pixclock)
return -EINVAL;
/* Find appropriate format */
rv = svga_match_format (s3fb_formats, var, NULL);
/* 32bpp mode is not supported on VIRGE VX,
24bpp is not supported on others */
if ((par->chip == CHIP_988_VIRGE_VX) ? (rv == 7 ) : (rv == 6 ))
rv = -EINVAL;
if (rv < 0 ) {
fb_err(info, "unsupported mode requested\n" );
return rv;
}
/* Do not allow to have real resoulution larger than virtual */
if (var->xres > var->xres_virtual)
var->xres_virtual = var->xres;
if (var->yres > var->yres_virtual)
var->yres_virtual = var->yres;
/* Round up xres_virtual to have proper alignment of lines */
step = s3fb_formats[rv].xresstep - 1 ;
var->xres_virtual = (var->xres_virtual+step) & ~step;
/* Check whether have enough memory */
mem = ((var->bits_per_pixel * var->xres_virtual) >> 3 ) * var->yres_virtual;
if (mem > info->screen_size) {
fb_err(info, "not enough framebuffer memory (%d kB requested , %u kB available)\n" ,
mem >> 10 , (unsigned int ) (info->screen_size >> 10 ));
return -EINVAL;
}
rv = svga_check_timings (&s3_timing_regs, var, info->node);
if (rv < 0 ) {
fb_err(info, "invalid timings requested\n" );
return rv;
}
rv = svga_compute_pll(&s3_pll, PICOS2KHZ(var->pixclock), &m, &n, &r,
info->node);
if (rv < 0 ) {
fb_err(info, "invalid pixclock value requested\n" );
return rv;
}
return 0 ;
}
/* Set video mode from par */
static int s3fb_set_par(struct fb_info *info)
{
struct s3fb_info *par = info->par;
u32 value, mode, hmul, offset_value, screen_size, multiplex, dbytes;
u32 bpp = info->var.bits_per_pixel;
u32 htotal, hsstart;
if (bpp != 0 ) {
info->fix.ypanstep = 1 ;
info->fix.line_length = (info->var.xres_virtual * bpp) / 8 ;
info->flags &= ~FBINFO_MISC_TILEBLITTING;
info->tileops = NULL;
/* in 4bpp supports 8p wide tiles only, any tiles otherwise */
if (bpp == 4 ) {
bitmap_zero(info->pixmap.blit_x, FB_MAX_BLIT_WIDTH);
set_bit(8 - 1 , info->pixmap.blit_x);
} else {
bitmap_fill(info->pixmap.blit_x, FB_MAX_BLIT_WIDTH);
}
bitmap_fill(info->pixmap.blit_y, FB_MAX_BLIT_HEIGHT);
offset_value = (info->var.xres_virtual * bpp) / 64 ;
screen_size = info->var.yres_virtual * info->fix.line_length;
} else {
info->fix.ypanstep = 16 ;
info->fix.line_length = 0 ;
info->flags |= FBINFO_MISC_TILEBLITTING;
info->tileops = fasttext ? &s3fb_fast_tile_ops : &s3fb_tile_ops;
/* supports 8x16 tiles only */
bitmap_zero(info->pixmap.blit_x, FB_MAX_BLIT_WIDTH);
set_bit(8 - 1 , info->pixmap.blit_x);
bitmap_zero(info->pixmap.blit_y, FB_MAX_BLIT_HEIGHT);
set_bit(16 - 1 , info->pixmap.blit_y);
offset_value = info->var.xres_virtual / 16 ;
screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64 ;
}
info->var.xoffset = 0 ;
info->var.yoffset = 0 ;
info->var.activate = FB_ACTIVATE_NOW;
/* Unlock registers */
vga_wcrt(par->state.vgabase, 0 x38, 0 x48);
vga_wcrt(par->state.vgabase, 0 x39, 0 xA5);
vga_wseq(par->state.vgabase, 0 x08, 0 x06);
svga_wcrt_mask(par->state.vgabase, 0 x11, 0 x00, 0 x80);
/* Blank screen and turn off sync */
svga_wseq_mask(par->state.vgabase, 0 x01, 0 x20, 0 x20);
svga_wcrt_mask(par->state.vgabase, 0 x17, 0 x00, 0 x80);
/* Set default values */
svga_set_default_gfx_regs(par->state.vgabase);
svga_set_default_atc_regs(par->state.vgabase);
svga_set_default_seq_regs(par->state.vgabase);
svga_set_default_crt_regs(par->state.vgabase);
svga_wcrt_multi(par->state.vgabase, s3_line_compare_regs, 0 xFFFFFFFF);
svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, 0 );
/* S3 specific initialization */
svga_wcrt_mask(par->state.vgabase, 0 x58, 0 x10, 0 x10); /* enable linear framebuffer */
svga_wcrt_mask(par->state.vgabase, 0 x31, 0 x08, 0 x08); /* enable sequencer access to framebuffer above 256 kB */
/* svga_wcrt_mask(par->state.vgabase, 0x33, 0x08, 0x08); */ /* DDR ? */
/* svga_wcrt_mask(par->state.vgabase, 0x43, 0x01, 0x01); */ /* DDR ? */
svga_wcrt_mask(par->state.vgabase, 0 x33, 0 x00, 0 x08); /* no DDR ? */
svga_wcrt_mask(par->state.vgabase, 0 x43, 0 x00, 0 x01); /* no DDR ? */
svga_wcrt_mask(par->state.vgabase, 0 x5D, 0 x00, 0 x28); /* Clear strange HSlen bits */
/* svga_wcrt_mask(par->state.vgabase, 0x58, 0x03, 0x03); */
/* svga_wcrt_mask(par->state.vgabase, 0x53, 0x12, 0x13); */ /* enable MMIO */
/* svga_wcrt_mask(par->state.vgabase, 0x40, 0x08, 0x08); */ /* enable write buffer */
/* Set the offset register */
fb_dbg(info, "offset register : %d\n" , offset_value);
svga_wcrt_multi(par->state.vgabase, s3_offset_regs, offset_value);
if (par->chip != CHIP_357_VIRGE_GX2 &&
par->chip != CHIP_359_VIRGE_GX2P &&
par->chip != CHIP_360_TRIO3D_1X &&
par->chip != CHIP_362_TRIO3D_2X &&
par->chip != CHIP_368_TRIO3D_2X &&
par->chip != CHIP_260_VIRGE_MX) {
vga_wcrt(par->state.vgabase, 0 x54, 0 x18); /* M parameter */
vga_wcrt(par->state.vgabase, 0 x60, 0 xff); /* N parameter */
vga_wcrt(par->state.vgabase, 0 x61, 0 xff); /* L parameter */
vga_wcrt(par->state.vgabase, 0 x62, 0 xff); /* L parameter */
}
vga_wcrt(par->state.vgabase, 0 x3A, 0 x35);
svga_wattr(par->state.vgabase, 0 x33, 0 x00);
if (info->var.vmode & FB_VMODE_DOUBLE)
svga_wcrt_mask(par->state.vgabase, 0 x09, 0 x80, 0 x80);
else
svga_wcrt_mask(par->state.vgabase, 0 x09, 0 x00, 0 x80);
if (info->var.vmode & FB_VMODE_INTERLACED)
svga_wcrt_mask(par->state.vgabase, 0 x42, 0 x20, 0 x20);
else
svga_wcrt_mask(par->state.vgabase, 0 x42, 0 x00, 0 x20);
/* Disable hardware graphics cursor */
svga_wcrt_mask(par->state.vgabase, 0 x45, 0 x00, 0 x01);
/* Disable Streams engine */
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x00, 0 x0C);
mode = svga_match_format(s3fb_formats, &(info->var), &(info->fix));
/* S3 virge DX hack */
if (par->chip == CHIP_375_VIRGE_DX) {
vga_wcrt(par->state.vgabase, 0 x86, 0 x80);
vga_wcrt(par->state.vgabase, 0 x90, 0 x00);
}
/* S3 virge VX hack */
if (par->chip == CHIP_988_VIRGE_VX) {
vga_wcrt(par->state.vgabase, 0 x50, 0 x00);
vga_wcrt(par->state.vgabase, 0 x67, 0 x50);
msleep(10 ); /* screen remains blank sometimes without this */
vga_wcrt(par->state.vgabase, 0 x63, (mode <= 2 ) ? 0 x90 : 0 x09);
vga_wcrt(par->state.vgabase, 0 x66, 0 x90);
}
if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_365_TRIO3D ||
par->chip == CHIP_375_VIRGE_DX ||
par->chip == CHIP_385_VIRGE_GX ||
par->chip == CHIP_260_VIRGE_MX) {
dbytes = info->var.xres * ((bpp+7 )/8 );
vga_wcrt(par->state.vgabase, 0 x91, (dbytes + 7 ) / 8 );
vga_wcrt(par->state.vgabase, 0 x90, (((dbytes + 7 ) / 8 ) >> 8 ) | 0 x80);
vga_wcrt(par->state.vgabase, 0 x66, 0 x81);
}
if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_260_VIRGE_MX)
vga_wcrt(par->state.vgabase, 0 x34, 0 x00);
else /* enable Data Transfer Position Control (DTPC) */
vga_wcrt(par->state.vgabase, 0 x34, 0 x10);
svga_wcrt_mask(par->state.vgabase, 0 x31, 0 x00, 0 x40);
multiplex = 0 ;
hmul = 1 ;
/* Set mode-specific register values */
switch (mode) {
case 0 :
fb_dbg(info, "text mode\n" );
svga_set_textmode_vga_regs(par->state.vgabase);
/* Set additional registers like in 8-bit mode */
svga_wcrt_mask(par->state.vgabase, 0 x50, 0 x00, 0 x30);
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x00, 0 xF0);
/* Disable enhanced mode */
svga_wcrt_mask(par->state.vgabase, 0 x3A, 0 x00, 0 x30);
if (fasttext) {
fb_dbg(info, "high speed text mode set\n" );
svga_wcrt_mask(par->state.vgabase, 0 x31, 0 x40, 0 x40);
}
break ;
case 1 :
fb_dbg(info, "4 bit pseudocolor\n" );
vga_wgfx(par->state.vgabase, VGA_GFX_MODE, 0 x40);
/* Set additional registers like in 8-bit mode */
svga_wcrt_mask(par->state.vgabase, 0 x50, 0 x00, 0 x30);
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x00, 0 xF0);
/* disable enhanced mode */
svga_wcrt_mask(par->state.vgabase, 0 x3A, 0 x00, 0 x30);
break ;
case 2 :
fb_dbg(info, "4 bit pseudocolor, planar\n" );
/* Set additional registers like in 8-bit mode */
svga_wcrt_mask(par->state.vgabase, 0 x50, 0 x00, 0 x30);
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x00, 0 xF0);
/* disable enhanced mode */
svga_wcrt_mask(par->state.vgabase, 0 x3A, 0 x00, 0 x30);
break ;
case 3 :
fb_dbg(info, "8 bit pseudocolor\n" );
svga_wcrt_mask(par->state.vgabase, 0 x50, 0 x00, 0 x30);
if (info->var.pixclock > 20000 ||
par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_260_VIRGE_MX)
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x00, 0 xF0);
else {
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x10, 0 xF0);
multiplex = 1 ;
}
break ;
case 4 :
fb_dbg(info, "5/5/5 truecolor\n" );
if (par->chip == CHIP_988_VIRGE_VX) {
if (info->var.pixclock > 20000 )
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x20, 0 xF0);
else
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x30, 0 xF0);
} else if (par->chip == CHIP_365_TRIO3D) {
svga_wcrt_mask(par->state.vgabase, 0 x50, 0 x10, 0 x30);
if (info->var.pixclock > 8695 ) {
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x30, 0 xF0);
hmul = 2 ;
} else {
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x20, 0 xF0);
multiplex = 1 ;
}
} else {
svga_wcrt_mask(par->state.vgabase, 0 x50, 0 x10, 0 x30);
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x30, 0 xF0);
if (par->chip != CHIP_357_VIRGE_GX2 &&
par->chip != CHIP_359_VIRGE_GX2P &&
par->chip != CHIP_360_TRIO3D_1X &&
par->chip != CHIP_362_TRIO3D_2X &&
par->chip != CHIP_368_TRIO3D_2X &&
par->chip != CHIP_260_VIRGE_MX)
hmul = 2 ;
}
break ;
case 5 :
fb_dbg(info, "5/6/5 truecolor\n" );
if (par->chip == CHIP_988_VIRGE_VX) {
if (info->var.pixclock > 20000 )
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x40, 0 xF0);
else
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x50, 0 xF0);
} else if (par->chip == CHIP_365_TRIO3D) {
svga_wcrt_mask(par->state.vgabase, 0 x50, 0 x10, 0 x30);
if (info->var.pixclock > 8695 ) {
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x50, 0 xF0);
hmul = 2 ;
} else {
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x40, 0 xF0);
multiplex = 1 ;
}
} else {
svga_wcrt_mask(par->state.vgabase, 0 x50, 0 x10, 0 x30);
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 x50, 0 xF0);
if (par->chip != CHIP_357_VIRGE_GX2 &&
par->chip != CHIP_359_VIRGE_GX2P &&
par->chip != CHIP_360_TRIO3D_1X &&
par->chip != CHIP_362_TRIO3D_2X &&
par->chip != CHIP_368_TRIO3D_2X &&
par->chip != CHIP_260_VIRGE_MX)
hmul = 2 ;
}
break ;
case 6 :
/* VIRGE VX case */
fb_dbg(info, "8/8/8 truecolor\n" );
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 xD0, 0 xF0);
break ;
case 7 :
fb_dbg(info, "8/8/8/8 truecolor\n" );
svga_wcrt_mask(par->state.vgabase, 0 x50, 0 x30, 0 x30);
svga_wcrt_mask(par->state.vgabase, 0 x67, 0 xD0, 0 xF0);
break ;
default :
fb_err(info, "unsupported mode - bug\n" );
return -EINVAL;
}
if (par->chip != CHIP_988_VIRGE_VX) {
svga_wseq_mask(par->state.vgabase, 0 x15, multiplex ? 0 x10 : 0 x00, 0 x10);
svga_wseq_mask(par->state.vgabase, 0 x18, multiplex ? 0 x80 : 0 x00, 0 x80);
}
s3_set_pixclock(info, info->var.pixclock);
svga_set_timings(par->state.vgabase, &s3_timing_regs, &(info->var), hmul, 1 ,
(info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1 ,
(info->var.vmode & FB_VMODE_INTERLACED) ? 2 : 1 ,
hmul, info->node);
/* Set interlaced mode start/end register */
htotal = info->var.xres + info->var.left_margin + info->var.right_margin + info->var.hsync_len;
htotal = ((htotal * hmul) / 8 ) - 5 ;
vga_wcrt(par->state.vgabase, 0 x3C, (htotal + 1 ) / 2 );
/* Set Data Transfer Position */
hsstart = ((info->var.xres + info->var.right_margin) * hmul) / 8 ;
/* + 2 is needed for Virge/VX, does no harm on other cards */
value = clamp((htotal + hsstart + 1 ) / 2 + 2 , hsstart + 4 , htotal + 1 );
svga_wcrt_multi(par->state.vgabase, s3_dtpc_regs, value);
if (screen_size > info->screen_size)
screen_size = info->screen_size;
memset_io(info->screen_base, 0 x00, screen_size);
/* Device and screen back on */
svga_wcrt_mask(par->state.vgabase, 0 x17, 0 x80, 0 x80);
svga_wseq_mask(par->state.vgabase, 0 x01, 0 x00, 0 x20);
return 0 ;
}
/* Set a colour register */
static int s3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *fb)
{
switch (fb->var.bits_per_pixel) {
case 0 :
case 4 :
if (regno >= 16 )
return -EINVAL;
if ((fb->var.bits_per_pixel == 4 ) &&
(fb->var.nonstd == 0 )) {
outb(0 xF0, VGA_PEL_MSK);
outb(regno*16 , VGA_PEL_IW);
} else {
outb(0 x0F, VGA_PEL_MSK);
outb(regno, VGA_PEL_IW);
}
outb(red >> 10 , VGA_PEL_D);
outb(green >> 10 , VGA_PEL_D);
outb(blue >> 10 , VGA_PEL_D);
break ;
case 8 :
if (regno >= 256 )
return -EINVAL;
outb(0 xFF, VGA_PEL_MSK);
outb(regno, VGA_PEL_IW);
outb(red >> 10 , VGA_PEL_D);
outb(green >> 10 , VGA_PEL_D);
outb(blue >> 10 , VGA_PEL_D);
break ;
case 16 :
if (regno >= 16 )
return 0 ;
if (fb->var.green.length == 5 )
((u32*)fb->pseudo_palette)[regno] = ((red & 0 xF800) >> 1 ) |
((green & 0 xF800) >> 6 ) | ((blue & 0 xF800) >> 11 );
else if (fb->var.green.length == 6 )
((u32*)fb->pseudo_palette)[regno] = (red & 0 xF800) |
((green & 0 xFC00) >> 5 ) | ((blue & 0 xF800) >> 11 );
else return -EINVAL;
break ;
case 24 :
case 32 :
if (regno >= 16 )
return 0 ;
((u32*)fb->pseudo_palette)[regno] = ((red & 0 xFF00) << 8 ) |
(green & 0 xFF00) | ((blue & 0 xFF00) >> 8 );
break ;
default :
return -EINVAL;
}
return 0 ;
}
/* Set the display blanking state */
static int s3fb_blank(int blank_mode, struct fb_info *info)
{
struct s3fb_info *par = info->par;
switch (blank_mode) {
case FB_BLANK_UNBLANK:
fb_dbg(info, "unblank\n" );
svga_wcrt_mask(par->state.vgabase, 0 x56, 0 x00, 0 x06);
svga_wseq_mask(par->state.vgabase, 0 x01, 0 x00, 0 x20);
break ;
case FB_BLANK_NORMAL:
fb_dbg(info, "blank\n" );
svga_wcrt_mask(par->state.vgabase, 0 x56, 0 x00, 0 x06);
svga_wseq_mask(par->state.vgabase, 0 x01, 0 x20, 0 x20);
break ;
case FB_BLANK_HSYNC_SUSPEND:
fb_dbg(info, "hsync\n" );
svga_wcrt_mask(par->state.vgabase, 0 x56, 0 x02, 0 x06);
svga_wseq_mask(par->state.vgabase, 0 x01, 0 x20, 0 x20);
break ;
case FB_BLANK_VSYNC_SUSPEND:
fb_dbg(info, "vsync\n" );
svga_wcrt_mask(par->state.vgabase, 0 x56, 0 x04, 0 x06);
svga_wseq_mask(par->state.vgabase, 0 x01, 0 x20, 0 x20);
break ;
case FB_BLANK_POWERDOWN:
fb_dbg(info, "sync down\n" );
svga_wcrt_mask(par->state.vgabase, 0 x56, 0 x06, 0 x06);
svga_wseq_mask(par->state.vgabase, 0 x01, 0 x20, 0 x20);
break ;
}
return 0 ;
}
/* Pan the display */
static int s3fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct s3fb_info *par = info->par;
unsigned int offset;
/* Calculate the offset */
if (info->var.bits_per_pixel == 0 ) {
offset = (var->yoffset / 16 ) * (info->var.xres_virtual / 2 )
+ (var->xoffset / 2 );
offset = offset >> 2 ;
} else {
offset = (var->yoffset * info->fix.line_length) +
(var->xoffset * info->var.bits_per_pixel / 8 );
offset = offset >> 2 ;
}
/* Set the offset */
svga_wcrt_multi(par->state.vgabase, s3_start_address_regs, offset);
return 0 ;
}
/* ------------------------------------------------------------------------- */
/* Frame buffer operations */
static const struct fb_ops s3fb_ops = {
.owner = THIS_MODULE,
.fb_open = s3fb_open,
.fb_release = s3fb_release,
__FB_DEFAULT_IOMEM_OPS_RDWR,
.fb_check_var = s3fb_check_var,
.fb_set_par = s3fb_set_par,
.fb_setcolreg = s3fb_setcolreg,
.fb_blank = s3fb_blank,
.fb_pan_display = s3fb_pan_display,
.fb_fillrect = s3fb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = s3fb_imageblit,
__FB_DEFAULT_IOMEM_OPS_MMAP,
.fb_get_caps = svga_get_caps,
};
/* ------------------------------------------------------------------------- */
static int s3_identification(struct s3fb_info *par)
{
int chip = par->chip;
if (chip == CHIP_XXX_TRIO) {
u8 cr30 = vga_rcrt(par->state.vgabase, 0 x30);
u8 cr2e = vga_rcrt(par->state.vgabase, 0 x2e);
u8 cr2f = vga_rcrt(par->state.vgabase, 0 x2f);
if ((cr30 == 0 xE0) || (cr30 == 0 xE1)) {
if (cr2e == 0 x10)
return CHIP_732_TRIO32;
if (cr2e == 0 x11) {
if (! (cr2f & 0 x40))
return CHIP_764_TRIO64;
else
return CHIP_765_TRIO64VP;
}
}
}
if (chip == CHIP_XXX_TRIO64V2_DXGX) {
u8 cr6f = vga_rcrt(par->state.vgabase, 0 x6f);
if (! (cr6f & 0 x01))
return CHIP_775_TRIO64V2_DX;
else
return CHIP_785_TRIO64V2_GX;
}
if (chip == CHIP_XXX_VIRGE_DXGX) {
u8 cr6f = vga_rcrt(par->state.vgabase, 0 x6f);
if (! (cr6f & 0 x01))
return CHIP_375_VIRGE_DX;
else
return CHIP_385_VIRGE_GX;
}
if (chip == CHIP_36X_TRIO3D_1X_2X) {
switch (vga_rcrt(par->state.vgabase, 0 x2f)) {
case 0 x00:
return CHIP_360_TRIO3D_1X;
case 0 x01:
return CHIP_362_TRIO3D_2X;
case 0 x02:
return CHIP_368_TRIO3D_2X;
}
}
return CHIP_UNKNOWN;
}
/* PCI probe */
static int s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
struct pci_bus_region bus_reg;
struct resource vga_res;
struct fb_info *info;
struct s3fb_info *par;
int rc;
u8 regval, cr38, cr39;
bool found = false ;
/* Ignore secondary VGA device because there is no VGA arbitration */
if (! svga_primary_device(dev)) {
dev_info(&(dev->dev), "ignoring secondary device\n" );
return -ENODEV;
}
rc = aperture_remove_conflicting_pci_devices(dev, "s3fb" );
if (rc)
return rc;
/* Allocate and fill driver data structure */
info = framebuffer_alloc(sizeof (struct s3fb_info), &(dev->dev));
if (!info)
return -ENOMEM;
par = info->par;
mutex_init(&par->open_lock);
info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN;
info->fbops = &s3fb_ops;
/* Prepare PCI device */
rc = pci_enable_device(dev);
if (rc < 0 ) {
dev_err(info->device, "cannot enable PCI device\n" );
goto err_enable_device;
}
rc = pci_request_regions(dev, "s3fb" );
if (rc < 0 ) {
dev_err(info->device, "cannot reserve framebuffer region\n" );
goto err_request_regions;
}
info->fix.smem_start = pci_resource_start(dev, 0 );
info->fix.smem_len = pci_resource_len(dev, 0 );
/* Map physical IO memory address into kernel space */
info->screen_base = pci_iomap_wc(dev, 0 , 0 );
if (! info->screen_base) {
rc = -ENOMEM;
dev_err(info->device, "iomap for framebuffer failed\n" );
goto err_iomap;
}
bus_reg.start = 0 ;
bus_reg.end = 64 * 1024 ;
vga_res.flags = IORESOURCE_IO;
pcibios_bus_to_resource(dev->bus, &vga_res, &bus_reg);
par->state.vgabase = (void __iomem *) (unsigned long ) vga_res.start;
/* Unlock regs */
cr38 = vga_rcrt(par->state.vgabase, 0 x38);
cr39 = vga_rcrt(par->state.vgabase, 0 x39);
vga_wseq(par->state.vgabase, 0 x08, 0 x06);
vga_wcrt(par->state.vgabase, 0 x38, 0 x48);
vga_wcrt(par->state.vgabase, 0 x39, 0 xA5);
/* Identify chip type */
par->chip = id->driver_data & CHIP_MASK;
par->rev = vga_rcrt(par->state.vgabase, 0 x2f);
if (par->chip & CHIP_UNDECIDED_FLAG)
par->chip = s3_identification(par);
/* Find how many physical memory there is on card */
/* 0x36 register is accessible even if other registers are locked */
regval = vga_rcrt(par->state.vgabase, 0 x36);
if (par->chip == CHIP_360_TRIO3D_1X ||
par->chip == CHIP_362_TRIO3D_2X ||
par->chip == CHIP_368_TRIO3D_2X ||
par->chip == CHIP_365_TRIO3D) {
switch ((regval & 0 xE0) >> 5 ) {
case 0 : /* 8MB -- only 4MB usable for display */
case 1 : /* 4MB with 32-bit bus */
case 2 : /* 4MB */
info->screen_size = 4 << 20 ;
break ;
case 4 : /* 2MB on 365 Trio3D */
case 6 : /* 2MB */
info->screen_size = 2 << 20 ;
break ;
}
} else if (par->chip == CHIP_357_VIRGE_GX2 ||
par->chip == CHIP_359_VIRGE_GX2P ||
par->chip == CHIP_260_VIRGE_MX) {
switch ((regval & 0 xC0) >> 6 ) {
case 1 : /* 4MB */
info->screen_size = 4 << 20 ;
break ;
case 3 : /* 2MB */
info->screen_size = 2 << 20 ;
break ;
}
} else if (par->chip == CHIP_988_VIRGE_VX) {
switch ((regval & 0 x60) >> 5 ) {
case 0 : /* 2MB */
info->screen_size = 2 << 20 ;
break ;
case 1 : /* 4MB */
info->screen_size = 4 << 20 ;
break ;
case 2 : /* 6MB */
info->screen_size = 6 << 20 ;
break ;
case 3 : /* 8MB */
info->screen_size = 8 << 20 ;
break ;
}
/* off-screen memory */
regval = vga_rcrt(par->state.vgabase, 0 x37);
switch ((regval & 0 x60) >> 5 ) {
case 1 : /* 4MB */
info->screen_size -= 4 << 20 ;
break ;
case 2 : /* 2MB */
info->screen_size -= 2 << 20 ;
break ;
}
} else
info->screen_size = s3_memsizes[regval >> 5 ] << 10 ;
info->fix.smem_len = info->screen_size;
/* Find MCLK frequency */
regval = vga_rseq(par->state.vgabase, 0 x10);
par->mclk_freq = ((vga_rseq(par->state.vgabase, 0 x11) + 2 ) * 14318 ) / ((regval & 0 x1F) + 2 );
par->mclk_freq = par->mclk_freq >> (regval >> 5 );
/* Restore locks */
vga_wcrt(par->state.vgabase, 0 x38, cr38);
vga_wcrt(par->state.vgabase, 0 x39, cr39);
strcpy(info->fix.id, s3_names [par->chip]);
info->fix.mmio_start = 0 ;
info->fix.mmio_len = 0 ;
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
info->fix.ypanstep = 0 ;
info->fix.accel = FB_ACCEL_NONE;
info->pseudo_palette = (void *) (par->pseudo_palette);
info->var.bits_per_pixel = 8 ;
#ifdef CONFIG_FB_S3_DDC
/* Enable MMIO if needed */
if (s3fb_ddc_needs_mmio(par->chip)) {
par->mmio = ioremap(info->fix.smem_start + MMIO_OFFSET, MMIO_SIZE);
if (par->mmio)
svga_wcrt_mask(par->state.vgabase, 0 x53, 0 x08, 0 x08); /* enable MMIO */
else
dev_err(info->device, "unable to map MMIO at 0x%lx, disabling DDC" ,
info->fix.smem_start + MMIO_OFFSET);
}
if (!s3fb_ddc_needs_mmio(par->chip) || par->mmio)
if (s3fb_setup_ddc_bus(info) == 0 ) {
u8 *edid = fb_ddc_read(&par->ddc_adapter);
par->ddc_registered = true ;
if (edid) {
fb_edid_to_monspecs(edid, &info->monspecs);
kfree(edid);
if (!info->monspecs.modedb)
dev_err(info->device, "error getting mode database\n" );
else {
const struct fb_videomode *m;
fb_videomode_to_modelist(info->monspecs.modedb,
info->monspecs.modedb_len,
&info->modelist);
m = fb_find_best_display(&info->monspecs, &info->modelist);
if (m) {
fb_videomode_to_var(&info->var, m);
/* fill all other info->var's fields */
if (s3fb_check_var(&info->var, info) == 0 )
found = true ;
}
}
}
}
#endif
if (!mode_option && !found)
mode_option = "640x480-8@60" ;
/* Prepare startup mode */
if (mode_option) {
rc = fb_find_mode(&info->var, info, mode_option,
info->monspecs.modedb, info->monspecs.modedb_len,
NULL, info->var.bits_per_pixel);
if (!rc || rc == 4 ) {
rc = -EINVAL;
dev_err(info->device, "mode %s not found\n" , mode_option);
fb_destroy_modedb(info->monspecs.modedb);
info->monspecs.modedb = NULL;
goto err_find_mode;
}
}
fb_destroy_modedb(info->monspecs.modedb);
info->monspecs.modedb = NULL;
/* maximize virtual vertical size for fast scrolling */
info->var.yres_virtual = info->fix.smem_len * 8 /
(info->var.bits_per_pixel * info->var.xres_virtual);
if (info->var.yres_virtual < info->var.yres) {
dev_err(info->device, "virtual vertical size smaller than real\n" );
rc = -EINVAL;
goto err_find_mode;
}
rc = fb_alloc_cmap(&info->cmap, 256 , 0 );
if (rc < 0 ) {
dev_err(info->device, "cannot allocate colormap\n" );
goto err_alloc_cmap;
}
rc = register_framebuffer(info);
if (rc < 0 ) {
dev_err(info->device, "cannot register framebuffer\n" );
goto err_reg_fb;
}
fb_info(info, "%s on %s, %d MB RAM, %d MHz MCLK\n" ,
info->fix.id, pci_name(dev),
info->fix.smem_len >> 20 , (par->mclk_freq + 500 ) / 1000 );
if (par->chip == CHIP_UNKNOWN)
fb_info(info, "unknown chip, CR2D=%x, CR2E=%x, CRT2F=%x, CRT30=%x\n" ,
vga_rcrt(par->state.vgabase, 0 x2d),
vga_rcrt(par->state.vgabase, 0 x2e),
vga_rcrt(par->state.vgabase, 0 x2f),
vga_rcrt(par->state.vgabase, 0 x30));
/* Record a reference to the driver data */
pci_set_drvdata(dev, info);
if (mtrr)
par->wc_cookie = arch_phys_wc_add(info->fix.smem_start,
info->fix.smem_len);
return 0 ;
/* Error handling */
err_reg_fb:
fb_dealloc_cmap(&info->cmap);
err_alloc_cmap:
err_find_mode:
#ifdef CONFIG_FB_S3_DDC
if (par->ddc_registered)
i2c_del_adapter(&par->ddc_adapter);
if (par->mmio)
iounmap(par->mmio);
#endif
pci_iounmap(dev, info->screen_base);
err_iomap:
pci_release_regions(dev);
err_request_regions:
/* pci_disable_device(dev); */
err_enable_device:
framebuffer_release(info);
return rc;
}
/* PCI remove */
static void s3_pci_remove(struct pci_dev *dev)
{
struct fb_info *info = pci_get_drvdata(dev);
struct s3fb_info __maybe_unused *par;
if (info) {
par = info->par;
arch_phys_wc_del(par->wc_cookie);
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
#ifdef CONFIG_FB_S3_DDC
if (par->ddc_registered)
i2c_del_adapter(&par->ddc_adapter);
if (par->mmio)
iounmap(par->mmio);
#endif
pci_iounmap(dev, info->screen_base);
pci_release_regions(dev);
/* pci_disable_device(dev); */
framebuffer_release(info);
}
}
/* PCI suspend */
static int __maybe_unused s3_pci_suspend(struct device *dev)
{
struct fb_info *info = dev_get_drvdata(dev);
struct s3fb_info *par = info->par;
dev_info(info->device, "suspend\n" );
console_lock();
mutex_lock(&(par->open_lock));
if (par->ref_count == 0 ) {
mutex_unlock(&(par->open_lock));
console_unlock();
return 0 ;
}
fb_set_suspend(info, 1 );
mutex_unlock(&(par->open_lock));
console_unlock();
return 0 ;
}
/* PCI resume */
static int __maybe_unused s3_pci_resume(struct device *dev)
{
struct fb_info *info = dev_get_drvdata(dev);
struct s3fb_info *par = info->par;
dev_info(info->device, "resume\n" );
console_lock();
mutex_lock(&(par->open_lock));
if (par->ref_count == 0 ) {
mutex_unlock(&(par->open_lock));
console_unlock();
return 0 ;
}
s3fb_set_par(info);
fb_set_suspend(info, 0 );
mutex_unlock(&(par->open_lock));
console_unlock();
return 0 ;
}
static const struct dev_pm_ops s3_pci_pm_ops = {
#ifdef CONFIG_PM_SLEEP
.suspend = s3_pci_suspend,
.resume = s3_pci_resume,
.freeze = NULL,
.thaw = s3_pci_resume,
.poweroff = s3_pci_suspend,
.restore = s3_pci_resume,
#endif
};
/* List of boards that we are trying to support */
static const struct pci_device_id s3_devices[] = {
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8810), .driver_data = CHIP_XXX_TRIO},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8811), .driver_data = CHIP_XXX_TRIO},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8812), .driver_data = CHIP_M65_AURORA64VP},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8814), .driver_data = CHIP_767_TRIO64UVP},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8901), .driver_data = CHIP_XXX_TRIO64V2_DXGX},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8902), .driver_data = CHIP_551_PLATO_PX},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x5631), .driver_data = CHIP_325_VIRGE},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x883D), .driver_data = CHIP_988_VIRGE_VX},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8A01), .driver_data = CHIP_XXX_VIRGE_DXGX},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8A10), .driver_data = CHIP_357_VIRGE_GX2},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8A11), .driver_data = CHIP_359_VIRGE_GX2P},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8A12), .driver_data = CHIP_359_VIRGE_GX2P},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8A13), .driver_data = CHIP_36X_TRIO3D_1X_2X},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8904), .driver_data = CHIP_365_TRIO3D},
{PCI_DEVICE(PCI_VENDOR_ID_S3, 0 x8C01), .driver_data = CHIP_260_VIRGE_MX},
{0 , 0 , 0 , 0 , 0 , 0 , 0 }
};
MODULE_DEVICE_TABLE(pci, s3_devices);
static struct pci_driver s3fb_pci_driver = {
.name = "s3fb" ,
.id_table = s3_devices,
.probe = s3_pci_probe,
.remove = s3_pci_remove,
.driver.pm = &s3_pci_pm_ops,
};
/* Parse user specified options */
#ifndef MODULE
static int __init s3fb_setup(char *options)
{
char *opt;
if (!options || !*options)
return 0 ;
while ((opt = strsep(&options, "," )) != NULL) {
if (!*opt)
continue ;
else if (!strncmp(opt, "mtrr:" , 5 ))
mtrr = simple_strtoul(opt + 5 , NULL, 0 );
else if (!strncmp(opt, "fasttext:" , 9 ))
fasttext = simple_strtoul(opt + 9 , NULL, 0 );
else
mode_option = opt;
}
return 0 ;
}
#endif
/* Cleanup */
static void __exit s3fb_cleanup(void )
{
pr_debug("s3fb: cleaning up\n" );
pci_unregister_driver(&s3fb_pci_driver);
}
/* Driver Initialisation */
static int __init s3fb_init(void )
{
#ifndef MODULE
char *option = NULL;
#endif
if (fb_modesetting_disabled("s3fb" ))
return -ENODEV;
#ifndef MODULE
if (fb_get_options("s3fb" , &option))
return -ENODEV;
s3fb_setup(option);
#endif
pr_debug("s3fb: initializing\n" );
return pci_register_driver(&s3fb_pci_driver);
}
/* ------------------------------------------------------------------------- */
/* Modularization */
module_init(s3fb_init);
module_exit(s3fb_cleanup);
Messung V0.5 in Prozent C=96 H=96 G=95
[Verzeichnis aufwärts0.28unsichere VerbindungÜbersetzung europäischer Sprachen durch Browser2026-06-07]
2026-06-09