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linux_old1/drivers/video/pm3fb.c

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/*
* linux/drivers/video/pm3fb.c -- 3DLabs Permedia3 frame buffer device
*
* Copyright (C) 2001 Romain Dolbeau <romain@dolbeau.org>.
*
* Ported to 2.6 kernel on 1 May 2007 by Krzysztof Helt <krzysztof.h1@wp.pl>
* based on pm2fb.c
*
* Based on code written by:
* Sven Luther, <luther@dpt-info.u-strasbg.fr>
* Alan Hourihane, <alanh@fairlite.demon.co.uk>
* Russell King, <rmk@arm.linux.org.uk>
* Based on linux/drivers/video/skeletonfb.c:
* Copyright (C) 1997 Geert Uytterhoeven
* Based on linux/driver/video/pm2fb.c:
* Copyright (C) 1998-1999 Ilario Nardinocchi (nardinoc@CS.UniBO.IT)
* Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
*
* 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.
*
*/
#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/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <video/pm3fb.h>
#if !defined(CONFIG_PCI)
#error "Only generic PCI cards supported."
#endif
#undef PM3FB_MASTER_DEBUG
#ifdef PM3FB_MASTER_DEBUG
#define DPRINTK(a,b...) printk(KERN_DEBUG "pm3fb: %s: " a, __FUNCTION__ , ## b)
#else
#define DPRINTK(a,b...)
#endif
/*
* Driver data
*/
static char *mode_option __devinitdata;
/*
* This structure defines the hardware state of the graphics card. Normally
* you place this in a header file in linux/include/video. This file usually
* also includes register information. That allows other driver subsystems
* and userland applications the ability to use the same header file to
* avoid duplicate work and easy porting of software.
*/
struct pm3_par {
unsigned char __iomem *v_regs;/* virtual address of p_regs */
u32 video; /* video flags before blanking */
u32 base; /* screen base (xoffset+yoffset) in 128 bits unit */
u32 palette[16];
};
/*
* Here we define the default structs fb_fix_screeninfo and fb_var_screeninfo
* if we don't use modedb. If we do use modedb see pm3fb_init how to use it
* to get a fb_var_screeninfo. Otherwise define a default var as well.
*/
static struct fb_fix_screeninfo pm3fb_fix __devinitdata = {
.id = "Permedia3",
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_PSEUDOCOLOR,
.xpanstep = 1,
.ypanstep = 1,
.ywrapstep = 0,
.accel = FB_ACCEL_NONE,
};
/*
* Utility functions
*/
static inline u32 PM3_READ_REG(struct pm3_par *par, s32 off)
{
return fb_readl(par->v_regs + off);
}
static inline void PM3_WRITE_REG(struct pm3_par *par, s32 off, u32 v)
{
fb_writel(v, par->v_regs + off);
}
static inline void PM3_WAIT(struct pm3_par *par, u32 n)
{
while (PM3_READ_REG(par, PM3InFIFOSpace) < n);
}
static inline void PM3_WRITE_DAC_REG(struct pm3_par *par, unsigned r, u8 v)
{
PM3_WAIT(par, 3);
PM3_WRITE_REG(par, PM3RD_IndexHigh, (r >> 8) & 0xff);
PM3_WRITE_REG(par, PM3RD_IndexLow, r & 0xff);
wmb();
PM3_WRITE_REG(par, PM3RD_IndexedData, v);
wmb();
}
static inline void pm3fb_set_color(struct pm3_par *par, unsigned char regno,
unsigned char r, unsigned char g, unsigned char b)
{
PM3_WAIT(par, 4);
PM3_WRITE_REG(par, PM3RD_PaletteWriteAddress, regno);
wmb();
PM3_WRITE_REG(par, PM3RD_PaletteData, r);
wmb();
PM3_WRITE_REG(par, PM3RD_PaletteData, g);
wmb();
PM3_WRITE_REG(par, PM3RD_PaletteData, b);
wmb();
}
static void pm3fb_clear_colormap(struct pm3_par *par,
unsigned char r, unsigned char g, unsigned char b)
{
int i;
for (i = 0; i < 256 ; i++)
pm3fb_set_color(par, i, r, g, b);
}
/* Calculating various clock parameter */
static void pm3fb_calculate_clock(unsigned long reqclock,
unsigned char *prescale,
unsigned char *feedback,
unsigned char *postscale)
{
int f, pre, post;
unsigned long freq;
long freqerr = 1000;
long currerr;
for (f = 1; f < 256; f++) {
for (pre = 1; pre < 256; pre++) {
for (post = 0; post < 5; post++) {
freq = ((2*PM3_REF_CLOCK * f) >> post) / pre;
currerr = (reqclock > freq)
? reqclock - freq
: freq - reqclock;
if (currerr < freqerr) {
freqerr = currerr;
*feedback = f;
*prescale = pre;
*postscale = post;
}
}
}
}
}
static inline int pm3fb_depth(const struct fb_var_screeninfo *var)
{
if ( var->bits_per_pixel == 16 )
return var->red.length + var->green.length
+ var->blue.length;
return var->bits_per_pixel;
}
static inline int pm3fb_shift_bpp(unsigned bpp, int v)
{
switch (bpp) {
case 8:
return (v >> 4);
case 16:
return (v >> 3);
case 32:
return (v >> 2);
}
DPRINTK("Unsupported depth %u\n", bpp);
return 0;
}
/* write the mode to registers */
static void pm3fb_write_mode(struct fb_info *info)
{
struct pm3_par *par = info->par;
char tempsync = 0x00, tempmisc = 0x00;
const u32 hsstart = info->var.right_margin;
const u32 hsend = hsstart + info->var.hsync_len;
const u32 hbend = hsend + info->var.left_margin;
const u32 xres = (info->var.xres + 31) & ~31;
const u32 htotal = xres + hbend;
const u32 vsstart = info->var.lower_margin;
const u32 vsend = vsstart + info->var.vsync_len;
const u32 vbend = vsend + info->var.upper_margin;
const u32 vtotal = info->var.yres + vbend;
const u32 width = (info->var.xres_virtual + 7) & ~7;
const unsigned bpp = info->var.bits_per_pixel;
PM3_WAIT(par, 20);
PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xffffffff);
PM3_WRITE_REG(par, PM3Aperture0, 0x00000000);
PM3_WRITE_REG(par, PM3Aperture1, 0x00000000);
PM3_WRITE_REG(par, PM3FIFODis, 0x00000007);
PM3_WRITE_REG(par, PM3HTotal,
pm3fb_shift_bpp(bpp, htotal - 1));
PM3_WRITE_REG(par, PM3HsEnd,
pm3fb_shift_bpp(bpp, hsend));
PM3_WRITE_REG(par, PM3HsStart,
pm3fb_shift_bpp(bpp, hsstart));
PM3_WRITE_REG(par, PM3HbEnd,
pm3fb_shift_bpp(bpp, hbend));
PM3_WRITE_REG(par, PM3HgEnd,
pm3fb_shift_bpp(bpp, hbend));
PM3_WRITE_REG(par, PM3ScreenStride,
pm3fb_shift_bpp(bpp, width));
PM3_WRITE_REG(par, PM3VTotal, vtotal - 1);
PM3_WRITE_REG(par, PM3VsEnd, vsend - 1);
PM3_WRITE_REG(par, PM3VsStart, vsstart - 1);
PM3_WRITE_REG(par, PM3VbEnd, vbend);
switch (bpp) {
case 8:
PM3_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_8BIT);
PM3_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_8BIT);
break;
case 16:
#ifndef __BIG_ENDIAN
PM3_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_16BIT);
PM3_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_16BIT);
#else
PM3_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_16BIT |
PM3ByApertureMode_BYTESWAP_BADC);
PM3_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_16BIT |
PM3ByApertureMode_BYTESWAP_BADC);
#endif /* ! __BIG_ENDIAN */
break;
case 32:
#ifndef __BIG_ENDIAN
PM3_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_32BIT);
PM3_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_32BIT);
#else
PM3_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_32BIT |
PM3ByApertureMode_BYTESWAP_DCBA);
PM3_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_32BIT |
PM3ByApertureMode_BYTESWAP_DCBA);
#endif /* ! __BIG_ENDIAN */
break;
default:
DPRINTK("Unsupported depth %d\n", bpp);
break;
}
/*
* Oxygen VX1 - it appears that setting PM3VideoControl and
* then PM3RD_SyncControl to the same SYNC settings undoes
* any net change - they seem to xor together. Only set the
* sync options in PM3RD_SyncControl. --rmk
*/
{
unsigned int video = par->video;
video &= ~(PM3VideoControl_HSYNC_MASK |
PM3VideoControl_VSYNC_MASK);
video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
PM3VideoControl_VSYNC_ACTIVE_HIGH;
PM3_WRITE_REG(par, PM3VideoControl, video);
}
PM3_WRITE_REG(par, PM3VClkCtl,
(PM3_READ_REG(par, PM3VClkCtl) & 0xFFFFFFFC));
PM3_WRITE_REG(par, PM3ScreenBase, par->base);
PM3_WRITE_REG(par, PM3ChipConfig,
(PM3_READ_REG(par, PM3ChipConfig) & 0xFFFFFFFD));
wmb();
{
unsigned char uninitialized_var(m); /* ClkPreScale */
unsigned char uninitialized_var(n); /* ClkFeedBackScale */
unsigned char uninitialized_var(p); /* ClkPostScale */
unsigned long pixclock = PICOS2KHZ(info->var.pixclock);
(void)pm3fb_calculate_clock(pixclock, &m, &n, &p);
DPRINTK("Pixclock: %ld, Pre: %d, Feedback: %d, Post: %d\n",
pixclock, (int) m, (int) n, (int) p);
PM3_WRITE_DAC_REG(par, PM3RD_DClk0PreScale, m);
PM3_WRITE_DAC_REG(par, PM3RD_DClk0FeedbackScale, n);
PM3_WRITE_DAC_REG(par, PM3RD_DClk0PostScale, p);
}
/*
PM3_WRITE_DAC_REG(par, PM3RD_IndexControl, 0x00);
*/
/*
PM3_SLOW_WRITE_REG(par, PM3RD_IndexControl, 0x00);
*/
if ((par->video & PM3VideoControl_HSYNC_MASK) ==
PM3VideoControl_HSYNC_ACTIVE_HIGH)
tempsync |= PM3RD_SyncControl_HSYNC_ACTIVE_HIGH;
if ((par->video & PM3VideoControl_VSYNC_MASK) ==
PM3VideoControl_VSYNC_ACTIVE_HIGH)
tempsync |= PM3RD_SyncControl_VSYNC_ACTIVE_HIGH;
PM3_WRITE_DAC_REG(par, PM3RD_SyncControl, tempsync);
DPRINTK("PM3RD_SyncControl: %d\n", tempsync);
PM3_WRITE_DAC_REG(par, PM3RD_DACControl, 0x00);
switch (pm3fb_depth(&info->var)) {
case 8:
PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_8_BIT_PIXELS);
PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_CI8_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
tempmisc |= PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
break;
case 12:
PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_16_BIT_PIXELS);
PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_4444_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
break;
case 15:
PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_16_BIT_PIXELS);
PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_5551_FRONT_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
break;
case 16:
PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_16_BIT_PIXELS);
PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_565_FRONT_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
break;
case 32:
PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_32_BIT_PIXELS);
PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_8888_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
break;
}
PM3_WRITE_DAC_REG(par, PM3RD_MiscControl, tempmisc);
}
/*
* hardware independent functions
*/
int pm3fb_init(void);
static int pm3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
u32 lpitch;
unsigned bpp = var->red.length + var->green.length
+ var->blue.length + var->transp.length;
if ( bpp != var->bits_per_pixel ) {
/* set predefined mode for bits_per_pixel settings */
switch(var->bits_per_pixel) {
case 8:
var->red.length = var->green.length = var->blue.length = 8;
var->red.offset = var->green.offset = var->blue.offset = 0;
var->transp.offset = 0;
var->transp.length = 0;
break;
case 16:
var->red.length = var->blue.length = 5;
var->green.length = 6;
var->transp.length = 0;
break;
case 32:
var->red.length = var->green.length = var->blue.length = 8;
var->transp.length = 8;
break;
default:
DPRINTK("depth not supported: %u\n", var->bits_per_pixel);
return -EINVAL;
}
}
/* it is assumed BGRA order */
if (var->bits_per_pixel > 8 )
{
var->blue.offset = 0;
var->green.offset = var->blue.length;
var->red.offset = var->green.offset + var->green.length;
var->transp.offset = var->red.offset + var->red.length;
}
var->height = var->width = -1;
if (var->xres != var->xres_virtual) {
DPRINTK("virtual x resolution != physical x resolution not supported\n");
return -EINVAL;
}
if (var->yres > var->yres_virtual) {
DPRINTK("virtual y resolution < physical y resolution not possible\n");
return -EINVAL;
}
if (var->xoffset) {
DPRINTK("xoffset not supported\n");
return -EINVAL;
}
if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
DPRINTK("interlace not supported\n");
return -EINVAL;
}
var->xres = (var->xres + 31) & ~31; /* could sometimes be 8 */
lpitch = var->xres * ((var->bits_per_pixel + 7)>>3);
if (var->xres < 200 || var->xres > 2048) {
DPRINTK("width not supported: %u\n", var->xres);
return -EINVAL;
}
if (var->yres < 200 || var->yres > 4095) {
DPRINTK("height not supported: %u\n", var->yres);
return -EINVAL;
}
if (lpitch * var->yres_virtual > info->fix.smem_len) {
DPRINTK("no memory for screen (%ux%ux%u)\n",
var->xres, var->yres_virtual, var->bits_per_pixel);
return -EINVAL;
}
if (PICOS2KHZ(var->pixclock) > PM3_MAX_PIXCLOCK) {
DPRINTK("pixclock too high (%ldKHz)\n", PICOS2KHZ(var->pixclock));
return -EINVAL;
}
var->accel_flags = 0; /* Can't mmap if this is on */
DPRINTK("Checking graphics mode at %dx%d depth %d\n",
var->xres, var->yres, var->bits_per_pixel);
return 0;
}
static int pm3fb_set_par(struct fb_info *info)
{
struct pm3_par *par = info->par;
const u32 xres = (info->var.xres + 31) & ~31;
const unsigned bpp = info->var.bits_per_pixel;
par->base = pm3fb_shift_bpp(bpp,(info->var.yoffset * xres)
+ info->var.xoffset);
par->video = 0;
if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
par->video |= PM3VideoControl_HSYNC_ACTIVE_HIGH;
else
par->video |= PM3VideoControl_HSYNC_ACTIVE_LOW;
if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
par->video |= PM3VideoControl_VSYNC_ACTIVE_HIGH;
else
par->video |= PM3VideoControl_VSYNC_ACTIVE_LOW;
if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE)
par->video |= PM3VideoControl_LINE_DOUBLE_ON;
else
par->video |= PM3VideoControl_LINE_DOUBLE_OFF;
if ((info->var.activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW)
par->video |= PM3VideoControl_ENABLE;
else {
par->video |= PM3VideoControl_DISABLE;
DPRINTK("PM3Video disabled\n");
}
switch (bpp) {
case 8:
par->video |= PM3VideoControl_PIXELSIZE_8BIT;
break;
case 16:
par->video |= PM3VideoControl_PIXELSIZE_16BIT;
break;
case 32:
par->video |= PM3VideoControl_PIXELSIZE_32BIT;
break;
default:
DPRINTK("Unsupported depth\n");
break;
}
info->fix.visual =
(bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
info->fix.line_length = ((info->var.xres_virtual + 7) & ~7)
* bpp / 8;
/* pm3fb_clear_memory(info, 0);*/
pm3fb_clear_colormap(par, 0, 0, 0);
PM3_WRITE_DAC_REG(par, PM3RD_CursorMode,
PM3RD_CursorMode_CURSOR_DISABLE);
pm3fb_write_mode(info);
return 0;
}
static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp,
struct fb_info *info)
{
struct pm3_par *par = info->par;
if (regno >= 256) /* no. of hw registers */
return -EINVAL;
/* grayscale works only partially under directcolor */
if (info->var.grayscale) {
/* grayscale = 0.30*R + 0.59*G + 0.11*B */
red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
}
/* Directcolor:
* var->{color}.offset contains start of bitfield
* var->{color}.length contains length of bitfield
* {hardwarespecific} contains width of DAC
* pseudo_palette[X] is programmed to (X << red.offset) |
* (X << green.offset) |
* (X << blue.offset)
* RAMDAC[X] is programmed to (red, green, blue)
* color depth = SUM(var->{color}.length)
*
* Pseudocolor:
* var->{color}.offset is 0
* var->{color}.length contains width of DAC or the number of unique
* colors available (color depth)
* pseudo_palette is not used
* RAMDAC[X] is programmed to (red, green, blue)
* color depth = var->{color}.length
*/
/*
* This is the point where the color is converted to something that
* is acceptable by the hardware.
*/
#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
red = CNVT_TOHW(red, info->var.red.length);
green = CNVT_TOHW(green, info->var.green.length);
blue = CNVT_TOHW(blue, info->var.blue.length);
transp = CNVT_TOHW(transp, info->var.transp.length);
#undef CNVT_TOHW
if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
u32 v;
if (regno >= 16)
return -EINVAL;
v = (red << info->var.red.offset) |
(green << info->var.green.offset) |
(blue << info->var.blue.offset) |
(transp << info->var.transp.offset);
switch (info->var.bits_per_pixel) {
case 8:
break;
case 16:
case 32:
((u32*)(info->pseudo_palette))[regno] = v;
break;
}
return 0;
}
else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR)
pm3fb_set_color(par, regno, red, green, blue);
return 0;
}
static int pm3fb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct pm3_par *par = info->par;
const u32 xres = (var->xres + 31) & ~31;
par->base = pm3fb_shift_bpp(var->bits_per_pixel,
(var->yoffset * xres)
+ var->xoffset);
PM3_WAIT(par, 1);
PM3_WRITE_REG(par, PM3ScreenBase, par->base);
return 0;
}
static int pm3fb_blank(int blank_mode, struct fb_info *info)
{
struct pm3_par *par = info->par;
u32 video = par->video;
/*
* Oxygen VX1 - it appears that setting PM3VideoControl and
* then PM3RD_SyncControl to the same SYNC settings undoes
* any net change - they seem to xor together. Only set the
* sync options in PM3RD_SyncControl. --rmk
*/
video &= ~(PM3VideoControl_HSYNC_MASK |
PM3VideoControl_VSYNC_MASK);
video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
PM3VideoControl_VSYNC_ACTIVE_HIGH;
switch (blank_mode) {
case FB_BLANK_UNBLANK:
video |= PM3VideoControl_ENABLE;
break;
case FB_BLANK_NORMAL:
video &= ~(PM3VideoControl_ENABLE);
break;
case FB_BLANK_HSYNC_SUSPEND:
video &= ~(PM3VideoControl_HSYNC_MASK |
PM3VideoControl_BLANK_ACTIVE_LOW);
break;
case FB_BLANK_VSYNC_SUSPEND:
video &= ~(PM3VideoControl_VSYNC_MASK |
PM3VideoControl_BLANK_ACTIVE_LOW);
break;
case FB_BLANK_POWERDOWN:
video &= ~(PM3VideoControl_HSYNC_MASK |
PM3VideoControl_VSYNC_MASK |
PM3VideoControl_BLANK_ACTIVE_LOW);
break;
default:
DPRINTK("Unsupported blanking %d\n", blank_mode);
return 1;
}
PM3_WAIT(par, 1);
PM3_WRITE_REG(par,PM3VideoControl, video);
return 0;
}
/*
* Frame buffer operations
*/
static struct fb_ops pm3fb_ops = {
.owner = THIS_MODULE,
.fb_check_var = pm3fb_check_var,
.fb_set_par = pm3fb_set_par,
.fb_setcolreg = pm3fb_setcolreg,
.fb_pan_display = pm3fb_pan_display,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_blank = pm3fb_blank,
};
/* ------------------------------------------------------------------------- */
/*
* Initialization
*/
/* mmio register are already mapped when this function is called */
/* the pm3fb_fix.smem_start is also set */
static unsigned long pm3fb_size_memory(struct pm3_par *par)
{
unsigned long memsize = 0, tempBypass, i, temp1, temp2;
unsigned char __iomem *screen_mem;
pm3fb_fix.smem_len = 64 * 1024l * 1024; /* request full aperture size */
/* Linear frame buffer - request region and map it. */
if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len,
"pm3fb smem")) {
printk(KERN_WARNING "pm3fb: Can't reserve smem.\n");
return 0;
}
screen_mem =
ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
if (!screen_mem) {
printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n");
release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
return 0;
}
/* TODO: card-specific stuff, *before* accessing *any* FB memory */
/* For Appian Jeronimo 2000 board second head */
tempBypass = PM3_READ_REG(par, PM3MemBypassWriteMask);
DPRINTK("PM3MemBypassWriteMask was: 0x%08lx\n", tempBypass);
PM3_WAIT(par, 1);
PM3_WRITE_REG(par, PM3MemBypassWriteMask, 0xFFFFFFFF);
/* pm3 split up memory, replicates, and do a lot of nasty stuff IMHO ;-) */
for (i = 0; i < 32; i++) {
fb_writel(i * 0x00345678,
(screen_mem + (i * 1048576)));
mb();
temp1 = fb_readl((screen_mem + (i * 1048576)));
/* Let's check for wrapover, write will fail at 16MB boundary */
if (temp1 == (i * 0x00345678))
memsize = i;
else
break;
}
DPRINTK("First detect pass already got %ld MB\n", memsize + 1);
if (memsize + 1 == i) {
for (i = 0; i < 32; i++) {
/* Clear first 32MB ; 0 is 0, no need to byteswap */
writel(0x0000000, (screen_mem + (i * 1048576)));
}
wmb();
for (i = 32; i < 64; i++) {
fb_writel(i * 0x00345678,
(screen_mem + (i * 1048576)));
mb();
temp1 =
fb_readl((screen_mem + (i * 1048576)));
temp2 =
fb_readl((screen_mem + ((i - 32) * 1048576)));
/* different value, different RAM... */
if ((temp1 == (i * 0x00345678)) && (temp2 == 0))
memsize = i;
else
break;
}
}
DPRINTK("Second detect pass got %ld MB\n", memsize + 1);
PM3_WAIT(par, 1);
PM3_WRITE_REG(par, PM3MemBypassWriteMask, tempBypass);
iounmap(screen_mem);
release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
memsize = 1048576 * (memsize + 1);
DPRINTK("Returning 0x%08lx bytes\n", memsize);
return memsize;
}
static int __devinit pm3fb_probe(struct pci_dev *dev,
const struct pci_device_id *ent)
{
struct fb_info *info;
struct pm3_par *par;
struct device* device = &dev->dev; /* for pci drivers */
int err, retval = -ENXIO;
err = pci_enable_device(dev);
if (err) {
printk(KERN_WARNING "pm3fb: Can't enable PCI dev: %d\n", err);
return err;
}
/*
* Dynamically allocate info and par
*/
info = framebuffer_alloc(sizeof(struct pm3_par), device);
if (!info)
return -ENOMEM;
par = info->par;
/*
* Here we set the screen_base to the virtual memory address
* for the framebuffer.
*/
pm3fb_fix.mmio_start = pci_resource_start(dev, 0);
pm3fb_fix.mmio_len = PM3_REGS_SIZE;
/* Registers - request region and map it. */
if (!request_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len,
"pm3fb regbase")) {
printk(KERN_WARNING "pm3fb: Can't reserve regbase.\n");
goto err_exit_neither;
}
par->v_regs =
ioremap_nocache(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
if (!par->v_regs) {
printk(KERN_WARNING "pm3fb: Can't remap %s register area.\n",
pm3fb_fix.id);
release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
goto err_exit_neither;
}
#if defined(__BIG_ENDIAN)
pm3fb_fix.mmio_start += PM3_REGS_SIZE;
DPRINTK("Adjusting register base for big-endian.\n");
#endif
/* Linear frame buffer - request region and map it. */
pm3fb_fix.smem_start = pci_resource_start(dev, 1);
pm3fb_fix.smem_len = pm3fb_size_memory(par);
if (!pm3fb_fix.smem_len)
{
printk(KERN_WARNING "pm3fb: Can't find memory on board.\n");
goto err_exit_mmio;
}
if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len,
"pm3fb smem")) {
printk(KERN_WARNING "pm3fb: Can't reserve smem.\n");
goto err_exit_mmio;
}
info->screen_base =
ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
if (!info->screen_base) {
printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n");
release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
goto err_exit_mmio;
}
info->screen_size = pm3fb_fix.smem_len;
info->fbops = &pm3fb_ops;
par->video = PM3_READ_REG(par, PM3VideoControl);
info->fix = pm3fb_fix;
info->pseudo_palette = par->palette;
info->flags = FBINFO_DEFAULT;/* | FBINFO_HWACCEL_YPAN;*/
/*
* This should give a reasonable default video mode. The following is
* done when we can set a video mode.
*/
if (!mode_option)
mode_option = "640x480@60";
retval = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8);
if (!retval || retval == 4) {
retval = -EINVAL;
goto err_exit_both;
}
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
retval = -ENOMEM;
goto err_exit_both;
}
/*
* For drivers that can...
*/
pm3fb_check_var(&info->var, info);
if (register_framebuffer(info) < 0) {
retval = -EINVAL;
goto err_exit_all;
}
printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
info->fix.id);
pci_set_drvdata(dev, info);
return 0;
err_exit_all:
fb_dealloc_cmap(&info->cmap);
err_exit_both:
iounmap(info->screen_base);
release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
err_exit_mmio:
iounmap(par->v_regs);
release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
err_exit_neither:
framebuffer_release(info);
return retval;
}
/*
* Cleanup
*/
static void __devexit pm3fb_remove(struct pci_dev *dev)
{
struct fb_info *info = pci_get_drvdata(dev);
if (info) {
struct fb_fix_screeninfo *fix = &info->fix;
struct pm3_par *par = info->par;
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
iounmap(info->screen_base);
release_mem_region(fix->smem_start, fix->smem_len);
iounmap(par->v_regs);
release_mem_region(fix->mmio_start, fix->mmio_len);
pci_set_drvdata(dev, NULL);
framebuffer_release(info);
}
}
static struct pci_device_id pm3fb_id_table[] = {
{ PCI_VENDOR_ID_3DLABS, 0x0a,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
{ 0, }
};
/* For PCI drivers */
static struct pci_driver pm3fb_driver = {
.name = "pm3fb",
.id_table = pm3fb_id_table,
.probe = pm3fb_probe,
.remove = __devexit_p(pm3fb_remove),
};
MODULE_DEVICE_TABLE(pci, pm3fb_id_table);
#ifndef MODULE
/*
* Setup
*/
/*
* Only necessary if your driver takes special options,
* otherwise we fall back on the generic fb_setup().
*/
static int __init pm3fb_setup(char *options)
{
/* Parse user speficied options (`video=pm3fb:') */
return 0;
}
#endif /* MODULE */
int __init pm3fb_init(void)
{
/*
* For kernel boot options (in 'video=pm3fb:<options>' format)
*/
#ifndef MODULE
char *option = NULL;
if (fb_get_options("pm3fb", &option))
return -ENODEV;
pm3fb_setup(option);
#endif
return pci_register_driver(&pm3fb_driver);
}
static void __exit pm3fb_exit(void)
{
pci_unregister_driver(&pm3fb_driver);
}
module_init(pm3fb_init);
module_exit(pm3fb_exit);
MODULE_LICENSE("GPL");
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