[PATCH] framebuffer: new driver for cyberblade/i1 graphics core
This is a framebuffer driver for the Cyberblade/i1 graphics core.
Currently tridenfb claims to support the cyberblade/i1 graphics core. This
is of very limited truth. Even vesafb is faster and provides more working
modes and a much better quality of the video signal. There is a great
number of bugs in tridentfb ... but most often it is impossible to decide
if these bugs are real bugs or if fixing them for the cyberblade/i1 core
would break support for one of the other supported chips.
Tridentfb seems to be unmaintained,and documentation for most of the
supported chips is not available. So "fixing" cyberblade/i1 support inside
of tridentfb was not an option, it would have caused numerous
if(CYBERBLADEi1) else ... cases and would have rendered the code to be
almost unmaintainable.
A first version of this driver was published on 2005-07-31. A fix for a
bug reported by Jochen Hein was integrated as well as some changes
requested by Antonino A. Daplas.
A message has been added to tridentfb to inform current users of tridentfb
to switch to cyblafb if the cyberblade/i1 graphics core is detected.
This patch is one logical change, but because of the included documentation
it is bigger than 70kb. Therefore it is not sent to lkml and
linux-fbdev-devel,
Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Muli Ben-Yehuda <mulix@mulix.org>
Acked-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/video/cyblafb.c b/drivers/video/cyblafb.c
new file mode 100644
index 0000000..ae2762c
--- /dev/null
+++ b/drivers/video/cyblafb.c
@@ -0,0 +1,1456 @@
+/*
+ * Frame buffer driver for Trident Cyberblade/i1 graphics core
+ *
+ * Copyright 2005 Knut Petersen <Knut_Petersen@t-online.de>
+ *
+ * CREDITS:
+ * tridentfb.c by Jani Monoses
+ * see files above for further credits
+ *
+ * TODO:
+ *
+ */
+
+#define CYBLAFB_DEBUG 0
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <asm/types.h>
+#include <video/cyblafb.h>
+
+#define VERSION "0.54"
+
+struct cyblafb_par {
+ u32 pseudo_pal[16];
+ struct fb_ops ops;
+};
+
+static struct fb_fix_screeninfo cyblafb_fix __devinitdata = {
+ .id = "CyBla",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .ypanstep = 1,
+ .visual = FB_VISUAL_PSEUDOCOLOR,
+ .accel = FB_ACCEL_NONE,
+};
+
+static char *mode __devinitdata = NULL;
+static int bpp __devinitdata = 8;
+static int ref __devinitdata = 75;
+static int fp __devinitdata;
+static int crt __devinitdata;
+static int memsize __devinitdata;
+static int vesafb __devinitdata;
+
+static int nativex;
+static int center;
+static int stretch;
+static int pciwb = 1;
+static int pcirb = 1;
+static int pciwr = 1;
+static int pcirr = 1;
+static int verbosity;
+static int displaytype;
+
+static void __iomem * io_virt; // iospace virtual memory address
+
+module_param(mode,charp,0);
+module_param(bpp,int,0);
+module_param(ref,int,0);
+module_param(fp,int,0);
+module_param(crt,int,0);
+module_param(nativex,int,0);
+module_param(center,int,0);
+module_param(stretch,int,0);
+module_param(pciwb,int,0);
+module_param(pcirb,int,0);
+module_param(pciwr,int,0);
+module_param(pcirr,int,0);
+module_param(memsize,int,0);
+module_param(verbosity,int,0);
+module_param(vesafb,int,0);
+
+//=========================================
+//
+// Port access macros for memory mapped io
+//
+//=========================================
+
+#define out8(r,v) writeb(v,io_virt+r)
+#define out32(r,v) writel(v,io_virt+r)
+#define in8(r) readb(io_virt+r)
+#define in32(r) readl(io_virt+r)
+
+//======================================
+//
+// Hardware access inline functions
+//
+//======================================
+
+static inline unsigned char read3X4(int reg)
+{
+ out8(0x3D4,reg);
+ return in8(0x3D5);
+}
+
+static inline unsigned char read3C4(int reg)
+{
+ out8(0x3C4,reg);
+ return in8(0x3C5);
+}
+
+static inline unsigned char read3CE(int reg)
+{
+ out8(0x3CE,reg);
+ return in8(0x3CF);
+}
+
+static inline void write3X4(int reg,unsigned char val)
+{
+ out8(0x3D4,reg);
+ out8(0x3D5,val);
+}
+
+static inline void write3C4(int reg,unsigned char val)
+{
+ out8(0x3C4,reg);
+ out8(0x3C5,val);
+}
+
+static inline void write3CE(int reg,unsigned char val)
+{
+ out8(0x3CE,reg);
+ out8(0x3CF,val);
+}
+
+static inline void write3C0(int reg,unsigned char val)
+{
+ in8(0x3DA); // read to reset index
+ out8(0x3C0,reg);
+ out8(0x3C0,val);
+}
+
+//=================================================
+//
+// Enable memory mapped io and unprotect registers
+//
+//=================================================
+
+static inline void enable_mmio(void)
+{
+ int tmp;
+
+ outb(0x0B,0x3C4);
+ inb(0x3C5); // Set NEW mode
+ outb(SR0E,0x3C4); // write enable a lot of extended ports
+ outb(0x80,0x3C5);
+
+ outb(SR11,0x3C4); // write enable those extended ports that
+ outb(0x87,0x3C5); // are not affected by SR0E_New
+
+ outb(CR1E,0x3d4); // clear write protect bit for port 0x3c2
+ tmp=inb(0x3d5) & 0xBF;
+ outb(CR1E,0x3d4);
+ outb(tmp,0x3d5);
+
+ outb(CR39,0x3D4);
+ outb(inb(0x3D5)|0x01,0x3D5); // Enable mmio, everything else untouched
+}
+
+//=================================================
+//
+// Set pixel clock VCLK1
+// - multipliers set elswhere
+// - freq in units of 0.01 MHz
+//
+//=================================================
+
+static void set_vclk(struct cyblafb_par *par, int freq)
+{
+ u32 m,n,k;
+ int f,fi,d,di;
+ u8 lo=0,hi=0;
+
+ d = 2000;
+ k = freq >= 10000 ? 0 : freq >= 5000 ? 1 : freq >= 2500 ? 2 : 3;
+ for(m = 0;m<64;m++)
+ for(n = 0;n<250;n++) { // max 249 is a hardware limit for cybla/i1 !
+ fi = (int)(((5864727*(n+8))/((m+2)*(1<<k)))>>12);
+ if ((di = abs(fi - freq)) < d) {
+ d = di;
+ f = fi;
+ lo = (u8) n;
+ hi = (u8) ((k<<6) | m);
+ }
+ }
+ write3C4(SR19,hi);
+ write3C4(SR18,lo);
+ if(verbosity > 1)
+ output("pixclock = %d.%02d MHz, k/m/n %x %x %x\n",
+ freq/100,freq%100,(hi&0xc0)>>6,hi&0x3f,lo);
+}
+
+//================================================
+//
+// Cyberblade specific Graphics Engine (GE) setup
+//
+//================================================
+
+static void cyblafb_setup_GE(int pitch,int bpp)
+{
+ int base = (pitch>>3)<<20;
+
+ switch (bpp) {
+ case 8: base |= (0<<29); break;
+ case 15: base |= (5<<29); break;
+ case 16: base |= (1<<29); break;
+ case 24:
+ case 32: base |= (2<<29); break;
+ }
+
+ write3X4(CR36,0x90); // reset GE
+ write3X4(CR36,0x80); // enable GE
+
+ out32(GE24,1<<7); // reset all GE pointers
+ out32(GE24,0);
+
+ write3X4(CR2D,0x00); // GE Timinigs, no delays
+
+ out32(GEB8,base); // Destination Stride / Buffer Base 0, p 133
+ out32(GEBC,base); // Destination Stride / Buffer Base 1, p 133
+ out32(GEC0,base); // Destination Stride / Buffer Base 2, p 133
+ out32(GEC4,base); // Destination Stride / Buffer Base 3, p 133
+ out32(GEC8,base); // Source Stride / Buffer Base 0, p 133
+ out32(GECC,base); // Source Stride / Buffer Base 1, p 133
+ out32(GED0,base); // Source Stride / Buffer Base 2, p 133
+ out32(GED4,base); // Source Stride / Buffer Base 3, p 133
+ out32(GE6C,0); // Pattern and Style, p 129, ok
+}
+
+//=====================================================================
+//
+// Although this is a .fb_sync function that could be enabled in
+// cyblafb_ops, we do not include it there. We sync immediately before
+// new GE operations to improve performance.
+//
+//=====================================================================
+
+static int cyblafb_sync(struct fb_info *info)
+{
+ int status, i=100000;
+ while( ((status=in32(GE20)) & 0xFA800000) && i != 0)
+ i--;
+
+ if (i == 0) {
+ // The timeout might be caused by disabled mmio.
+ // Cause:
+ // - bit CR39 & 1 == 0 upon return, X trident driver bug
+ // - kdm bug (KD_GRAPHICS not set on first switch)
+ // - kernel design flaw (it believes in the correctness
+ // of kdm/X
+ // So we make sure that mmio is enabled first ...
+ enable_mmio();
+// show_trace(NULL,&status);
+ i=1000000;
+ while( ((status=in32(GE20)) & 0xFA800000) && i != 0)
+ i--;
+ if (i == 0) {
+ output("GE Timeout, status: %x\n",status);
+ if(status & 0x80000000)
+ output("Bresenham Engine : Busy\n");
+ if(status & 0x40000000)
+ output("Setup Engine : Busy\n");
+ if(status & 0x20000000)
+ output("SP / DPE : Busy\n");
+ if(status & 0x10000000)
+ output("Memory Interface : Busy\n");
+ if(status & 0x08000000)
+ output("Com Lst Proc : Busy\n");
+ if(status & 0x04000000)
+ output("Block Write : Busy\n");
+ if(status & 0x02000000)
+ output("Command Buffer : Full\n");
+ if(status & 0x01000000)
+ output("RESERVED : Busy\n");
+ if(status & 0x00800000)
+ output("PCI Write Buffer : Busy\n");
+ cyblafb_setup_GE(info->var.xres,
+ info->var.bits_per_pixel);
+ }
+ }
+
+ return 0;
+}
+
+//==============================
+//
+// Cyberblade specific fillrect
+//
+//==============================
+
+static void cyblafb_fillrect(struct fb_info * info,
+ const struct fb_fillrect *fr)
+{
+ int bpp = info->var.bits_per_pixel;
+ int col;
+
+ switch (bpp) {
+ default:
+ case 8: col = fr->color;
+ col |= col <<8;
+ col |= col <<16;
+ break;
+ case 16: col = ((u32 *)(info->pseudo_palette))[fr->color];
+ col |= col <<16;
+ break;
+ case 32: col = ((u32 *)(info->pseudo_palette))[fr->color];
+ break;
+ }
+
+ cyblafb_sync(info);
+
+ out32(GE60,col);
+ out32(GE48,fr->rop ? 0x66:ROP_S);
+ out32(GE44,0x20000000|1<<19|1<<4|2<<2);
+ out32(GE08,point(fr->dx,fr->dy));
+ out32(GE0C,point(fr->dx+fr->width-1,fr->dy+fr->height-1));
+
+}
+
+//==============================
+//
+// Cyberblade specific copyarea
+//
+//==============================
+
+static void cyblafb_copyarea(struct fb_info *info,
+ const struct fb_copyarea *ca)
+{
+ __u32 s1,s2,d1,d2;
+ int direction;
+
+ s1 = point(ca->sx,ca->sy);
+ s2 = point(ca->sx+ca->width-1,ca->sy+ca->height-1);
+ d1 = point(ca->dx,ca->dy);
+ d2 = point(ca->dx+ca->width-1,ca->dy+ca->height-1);
+ if ((ca->sy > ca->dy) || ((ca->sy == ca->dy) && (ca->sx > ca->dx)))
+ direction = 0;
+ else
+ direction = 2;
+
+ cyblafb_sync(info);
+
+ out32(GE44,0xa0000000|1<<19|1<<2|direction);
+ out32(GE00,direction?s2:s1);
+ out32(GE04,direction?s1:s2);
+ out32(GE08,direction?d2:d1);
+ out32(GE0C,direction?d1:d2);
+
+}
+
+//=======================================================================
+//
+// Cyberblade specific imageblit
+//
+// Accelerated for the most usual case, blitting 1-bit deep character
+// character images. Everything else is passed to the generic imageblit.
+//
+//=======================================================================
+
+static void cyblafb_imageblit(struct fb_info *info,
+ const struct fb_image *image)
+{
+
+ u32 fgcol, bgcol;
+
+ int i;
+ int bpp = info->var.bits_per_pixel;
+ int index = 0;
+ int index_end=image->height * image->width / 8;
+ int width_dds=image->width / 32;
+ int width_dbs=image->width % 32;
+
+ if (image->depth != 1 || bpp < 8 || bpp > 32 || bpp % 8 != 0 ||
+ image->width % 8 != 0 || image->width == 0 || image->height == 0) {
+ cfb_imageblit(info,image);
+ return;
+ }
+
+ if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+ info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+ fgcol = ((u32*)(info->pseudo_palette))[image->fg_color];
+ bgcol = ((u32*)(info->pseudo_palette))[image->bg_color];
+ } else {
+ fgcol = image->fg_color;
+ bgcol = image->bg_color;
+ }
+
+ switch (bpp) {
+ case 8:
+ fgcol |= fgcol <<8; fgcol |= fgcol <<16;
+ bgcol |= bgcol <<8; bgcol |= bgcol <<16;
+ break;
+ case 16:
+ fgcol |= fgcol <<16;
+ bgcol |= bgcol <<16;
+ break;
+ default:
+ break;
+ }
+
+ cyblafb_sync(info);
+
+ out32(GE60,fgcol);
+ out32(GE64,bgcol);
+ out32(GE44,0xa0000000 | 1<<20 | 1<<19);
+ out32(GE08,point(image->dx,image->dy));
+ out32(GE0C,point(image->dx+image->width-1,image->dy+image->height-1));
+
+ while(index < index_end) {
+ for(i=0;i<width_dds;i++) {
+ out32(GE9C,*((u32*) ((u32)image->data + index)));
+ index+=4;
+ }
+ switch(width_dbs) {
+ case 0: break;
+ case 8: out32(GE9C,*((u8*)((u32)image->data+index)));
+ index+=1;
+ break;
+ case 16: out32(GE9C,*((u16*)((u32)image->data+index)));
+ index+=2;
+ break;
+ case 24: out32(GE9C,(u32)(*((u16*)((u32)image->data+index))) |
+ (u32)(*((u8*)((u32)image->data+index+2)))<<16);
+ index+=3;
+ break;
+ }
+ }
+}
+
+//==========================================================
+//
+// Check if video mode is acceptable. We change var->??? if
+// video mode is slightly off or return error otherwise.
+// info->??? must not be changed!
+//
+//==========================================================
+
+static int cyblafb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ int bpp = var->bits_per_pixel;
+ int s,t,maxvyres;
+
+ //
+ // we try to support 8, 16, 24 and 32 bpp modes,
+ // default to 8
+ //
+ // there is a 24 bpp mode, but for now we change requests to 32 bpp
+ // (This is what tridentfb does ... will be changed in the future)
+ //
+ //
+ if ( bpp % 8 != 0 || bpp < 8 || bpp >32)
+ bpp = 8;
+ if (bpp == 24 )
+ bpp = var->bits_per_pixel = 32;
+
+ //
+ // interlaced modes are broken, fail if one is requested
+ //
+ if (var->vmode & FB_VMODE_INTERLACED)
+ return -EINVAL;
+
+ //
+ // fail if requested resolution is higher than physical
+ // flatpanel resolution
+ //
+ if ((displaytype == DISPLAY_FP) && nativex && var->xres > nativex)
+ return -EINVAL;
+
+ //
+ // xres != xres_virtual is broken, fail if such an
+ // unusual mode is requested
+ //
+ if (var->xres != var->xres_virtual)
+ return -EINVAL;
+
+ //
+ // we do not allow vclk to exceed 230 MHz
+ //
+ if ((bpp==32 ? 200000000 : 100000000) / var->pixclock > 23000)
+ return -EINVAL;
+
+ //
+ // calc max yres_virtual that would fit in memory
+ // and max yres_virtual that could be used for scrolling
+ // and use minimum of the results as maxvyres
+ //
+ // adjust vyres_virtual to maxvyres if necessary
+ // fail if requested yres is bigger than maxvyres
+ //
+ s = (0x1fffff / (var->xres * bpp/8)) + var->yres;
+ t = info->fix.smem_len / (var->xres * bpp/8);
+ maxvyres = t < s ? t : s;
+ if (maxvyres < var->yres_virtual)
+ var->yres_virtual=maxvyres;
+ if (maxvyres < var->yres)
+ return -EINVAL;
+
+ switch (bpp) {
+ case 8:
+ var->red.offset = 0;
+ var->green.offset = 0;
+ var->blue.offset = 0;
+ var->red.length = 6;
+ var->green.length = 6;
+ var->blue.length = 6;
+ break;
+ case 16:
+ var->red.offset = 11;
+ var->green.offset = 5;
+ var->blue.offset = 0;
+ var->red.length = 5;
+ var->green.length = 6;
+ var->blue.length = 5;
+ break;
+ case 32:
+ var->red.offset = 16;
+ var->green.offset = 8;
+ var->blue.offset = 0;
+ var->red.length = 8;
+ var->green.length = 8;
+ var->blue.length = 8;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+
+}
+
+//=====================================================================
+//
+// Pan the display
+//
+// The datasheets defines crt start address to be 20 bits wide and
+// to be programmed to CR0C, CR0D, CR1E and CR27. Actually there is
+// CR2B[5] as an undocumented extension bit. Epia BIOS 2.07 does use
+// it, so it is also safe to be used here. BTW: datasheet CR0E on page
+// 90 really is CR1E, the real CRE is documented on page 72.
+//
+//=====================================================================
+
+static int cyblafb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ unsigned int offset;
+
+ offset=(var->xoffset+(var->yoffset*var->xres))*var->bits_per_pixel/32;
+ info->var.xoffset = var->xoffset;
+ info->var.yoffset = var->yoffset;
+
+ write3X4(CR0D,offset & 0xFF);
+ write3X4(CR0C,(offset & 0xFF00) >> 8);
+ write3X4(CR1E,(read3X4(CR1E) & 0xDF) | ((offset & 0x10000) >> 11));
+ write3X4(CR27,(read3X4(CR27) & 0xF8) | ((offset & 0xE0000) >> 17));
+ write3X4(CR2B,(read3X4(CR2B) & 0xDF) | ((offset & 0x100000) >> 15));
+
+ return 0;
+}
+
+//============================================
+//
+// This will really help in case of a bug ...
+// dump most gaphics core registers.
+//
+//============================================
+
+static void regdump(struct cyblafb_par *par)
+{
+ int i;
+
+ if (verbosity < 2)
+ return;
+
+ printk("\n");
+ for(i=0; i<=0xff; i++) {
+ outb(i,0x3d4);
+ printk("CR%02x=%02x ",i,inb(0x3d5));
+ if (i%16==15)
+ printk("\n");
+ }
+
+ outb(0x30,0x3ce);
+ outb(inb(0x3cf) | 0x40,0x3cf);
+ for(i=0; i<=0x1f; i++) {
+ if (i==0 || (i>2 && i<8) || i==0x10 || i==0x11 || i==0x16) {
+ outb(i,0x3d4);
+ printk("CR%02x=%02x ",i,inb(0x3d5));
+ } else
+ printk("------- ");
+ if (i%16==15)
+ printk("\n");
+ }
+ outb(0x30,0x3ce);
+ outb(inb(0x3cf) & 0xbf,0x3cf);
+
+ printk("\n");
+ for(i=0; i<=0x7f; i++) {
+ outb(i,0x3ce);
+ printk("GR%02x=%02x ",i,inb(0x3cf));
+ if (i%16==15)
+ printk("\n");
+ }
+
+ printk("\n");
+ for(i=0; i<=0xff; i++) {
+ outb(i,0x3c4);
+ printk("SR%02x=%02x ",i,inb(0x3c5));
+ if (i%16==15)
+ printk("\n");
+ }
+
+ printk("\n");
+ for(i=0; i <= 0x1F; i++) {
+ inb(0x3da); // next access is index!
+ outb(i,0x3c0);
+ printk("AR%02x=%02x ",i,inb(0x3c1));
+ if (i%16==15)
+ printk("\n");
+ }
+ printk("\n");
+
+ inb(0x3DA); // reset internal flag to 3c0 index
+ outb(0x20,0x3C0); // enable attr
+
+ return;
+}
+
+//======================================
+//
+// Set hardware to requested video mode
+//
+//======================================
+
+static int cyblafb_set_par(struct fb_info *info)
+{
+ struct cyblafb_par *par = info->par;
+ u32
+ htotal,hdispend,hsyncstart,hsyncend,hblankstart,hblankend,preendfetch,
+ vtotal,vdispend,vsyncstart,vsyncend,vblankstart,vblankend;
+ struct fb_var_screeninfo *var = &info->var;
+ int bpp = var->bits_per_pixel;
+ int i;
+
+ if (verbosity > 0)
+ output("Switching to new mode: "
+ "fbset -g %d %d %d %d %d -t %d %d %d %d %d %d %d\n",
+ var->xres,var->yres,var->xres_virtual,
+ var->yres_virtual,var->bits_per_pixel,var->pixclock,
+ var->left_margin,var->right_margin,var->upper_margin,
+ var->lower_margin,var->hsync_len,var->vsync_len);
+
+ htotal = (var->xres + var->left_margin + var->right_margin +
+ var->hsync_len) / 8 - 5;
+ hdispend = var->xres/8 - 1;
+ hsyncstart = (var->xres + var->right_margin)/8;
+ hsyncend = var->hsync_len/8;
+ hblankstart = hdispend + 1;
+ hblankend = htotal + 3; // should be htotal + 5, bios does it this way
+ preendfetch = ((var->xres >> 3) + 1) * ((bpp+1) >> 3);
+
+ vtotal = var->yres + var->upper_margin + var->lower_margin +
+ var->vsync_len - 2;
+ vdispend = var->yres - 1;
+ vsyncstart = var->yres + var->lower_margin;
+ vblankstart = var->yres;
+ vblankend = vtotal; // should be vtotal + 2, but bios does it this way
+ vsyncend = var->vsync_len;
+
+ enable_mmio(); // necessary! ... check X ...
+
+ write3X4(CR11,read3X4(CR11) & 0x7F); // unlock cr00 .. cr07
+
+ write3CE(GR30,8);
+
+ if ((displaytype == DISPLAY_FP) && var->xres < nativex) {
+
+ // stretch or center ?
+
+ out8(0x3C2,0xEB);
+
+ write3CE(GR30,read3CE(GR30) | 0x81); // shadow mode on
+
+ if (center) {
+ write3CE(GR52,(read3CE(GR52) & 0x7C) | 0x80);
+ write3CE(GR53,(read3CE(GR53) & 0x7C) | 0x80);
+ }
+ else if (stretch) {
+ write3CE(GR5D,0);
+ write3CE(GR52,(read3CE(GR52) & 0x7C) | 1);
+ write3CE(GR53,(read3CE(GR53) & 0x7C) | 1);
+ }
+
+ } else {
+ out8(0x3C2,0x2B);
+ write3CE(GR30,8);
+ }
+
+ //
+ // Setup CRxx regs
+ //
+
+ write3X4(CR00,htotal & 0xFF);
+ write3X4(CR01,hdispend & 0xFF);
+ write3X4(CR02,hblankstart & 0xFF);
+ write3X4(CR03,hblankend & 0x1F);
+ write3X4(CR04,hsyncstart & 0xFF);
+ write3X4(CR05,(hsyncend & 0x1F) | ((hblankend & 0x20)<<2));
+ write3X4(CR06,vtotal & 0xFF);
+ write3X4(CR07,(vtotal & 0x100) >> 8 |
+ (vdispend & 0x100) >> 7 |
+ (vsyncstart & 0x100) >> 6 |
+ (vblankstart & 0x100) >> 5 |
+ 0x10 |
+ (vtotal & 0x200) >> 4 |
+ (vdispend & 0x200) >> 3 |
+ (vsyncstart & 0x200) >> 2);
+ write3X4(CR08,0);
+ write3X4(CR09,(vblankstart & 0x200) >> 4 | 0x40 | // FIX !!!
+ ((info->var.vmode & FB_VMODE_DOUBLE) ? 0x80 : 0));
+ write3X4(CR0A,0); // Init to some reasonable default
+ write3X4(CR0B,0); // Init to some reasonable default
+ write3X4(CR0C,0); // Offset 0
+ write3X4(CR0D,0); // Offset 0
+ write3X4(CR0E,0); // Init to some reasonable default
+ write3X4(CR0F,0); // Init to some reasonable default
+ write3X4(CR10,vsyncstart & 0xFF);
+ write3X4(CR11,(vsyncend & 0x0F));
+ write3X4(CR12,vdispend & 0xFF);
+ write3X4(CR13,((info->var.xres * bpp)/(4*16)) & 0xFF);
+ write3X4(CR14,0x40); // double word mode
+ write3X4(CR15,vblankstart & 0xFF);
+ write3X4(CR16,vblankend & 0xFF);
+ write3X4(CR17,0xC3);
+ write3X4(CR18,0xFF);
+ // CR19: needed for interlaced modes ... ignore it for now
+ write3X4(CR1A,0x07); // Arbitration Control Counter 1
+ write3X4(CR1B,0x07); // Arbitration Control Counter 2
+ write3X4(CR1C,0x07); // Arbitration Control Counter 3
+ write3X4(CR1D,0x00); // Don't know, doesn't hurt ;-)
+ write3X4(CR1E,(info->var.vmode & FB_VMODE_INTERLACED) ? 0x84 : 0x80);
+ // CR1F: do not set, contains BIOS info about memsize
+ write3X4(CR20,0x20); // enabe wr buf, disable 16bit planar mode
+ write3X4(CR21,0x20); // enable linear memory access
+ // CR22: RO cpu latch readback
+ // CR23: ???
+ // CR24: RO AR flag state
+ // CR25: RAMDAC rw timing, pclk buffer tristate control ????
+ // CR26: ???
+ write3X4(CR27,(vdispend & 0x400) >> 6 |
+ (vsyncstart & 0x400) >> 5 |
+ (vblankstart & 0x400) >> 4 |
+ (vtotal & 0x400) >> 3 |
+ 0x8);
+ // CR28: ???
+ write3X4(CR29,(read3X4(CR29) & 0xCF) |
+ ((((info->var.xres * bpp) / (4*16)) & 0x300) >>4));
+ write3X4(CR2A,read3X4(CR2A) | 0x40);
+ write3X4(CR2B,(htotal & 0x100) >> 8 |
+ (hdispend & 0x100) >> 7 |
+ // (0x00 & 0x100) >> 6 | hinterlace para bit 8 ???
+ (hsyncstart & 0x100) >> 5 |
+ (hblankstart & 0x100) >> 4);
+ // CR2C: ???
+ // CR2D: initialized in cyblafb_setup_GE()
+ write3X4(CR2F,0x92); // conservative, better signal quality
+ // CR30: reserved
+ // CR31: reserved
+ // CR32: reserved
+ // CR33: reserved
+ // CR34: disabled in CR36
+ // CR35: disabled in CR36
+ // CR36: initialized in cyblafb_setup_GE
+ // CR37: i2c, ignore for now
+ write3X4(CR38,(bpp == 8) ? 0x00 : //
+ (bpp == 16) ? 0x05 : // highcolor
+ (bpp == 24) ? 0x29 : // packed 24bit truecolor
+ (bpp == 32) ? 0x09 : 0); // truecolor, 16 bit pixelbus
+ write3X4(CR39,0x01 | // MMIO enable
+ (pcirb ? 0x02 : 0) | // pci read burst enable
+ (pciwb ? 0x04 : 0)); // pci write burst enable
+ write3X4(CR55,0x1F | // pci clocks * 2 for STOP# during 1st data phase
+ (pcirr ? 0x40 : 0) | // pci read retry enable
+ (pciwr ? 0x80 : 0)); // pci write retry enable
+ write3X4(CR56,preendfetch >> 8 < 2 ? (preendfetch >> 8 & 0x01)|2 : 0);
+ write3X4(CR57,preendfetch >> 8 < 2 ? preendfetch & 0xff : 0);
+ write3X4(CR58,0x82); // Bios does this .... don't know more
+ //
+ // Setup SRxx regs
+ //
+ write3C4(SR00,3);
+ write3C4(SR01,1); //set char clock 8 dots wide
+ write3C4(SR02,0x0F); //enable 4 maps needed in chain4 mode
+ write3C4(SR03,0); //no character map select
+ write3C4(SR04,0x0E); //memory mode: ext mem, even, chain4
+
+ out8(0x3C4,0x0b);
+ in8(0x3C5); // Set NEW mode
+ write3C4(SR0D,0x00); // test ... check
+
+ set_vclk(par,(bpp==32 ? 200000000 : 100000000)/
+ info->var.pixclock); //SR18,SR19
+
+ //
+ // Setup GRxx regs
+ //
+ write3CE(GR00,0x00); // test ... check
+ write3CE(GR01,0x00); // test ... check
+ write3CE(GR02,0x00); // test ... check
+ write3CE(GR03,0x00); // test ... check
+ write3CE(GR04,0x00); // test ... check
+ write3CE(GR05,0x40); // no CGA compat,allow 256 col
+ write3CE(GR06,0x05); // graphics mode
+ write3CE(GR07,0x0F); // planes?
+ write3CE(GR08,0xFF); // test ... check
+ write3CE(GR0F,(bpp==32)?0x1A:0x12); // div vclk by 2 if 32bpp, chain4
+ write3CE(GR20,0xC0); // test ... check
+ write3CE(GR2F,0xA0); // PCLK = VCLK, no skew,
+
+ //
+ // Setup ARxx regs
+ //
+ for(i = 0;i < 0x10;i++) // set AR00 .. AR0f
+ write3C0(i,i);
+ write3C0(AR10,0x41); // graphics mode and support 256 color modes
+ write3C0(AR12,0x0F); // planes
+ write3C0(AR13,0); // horizontal pel panning
+ in8(0x3DA); // reset internal flag to 3c0 index
+ out8(0x3C0,0x20); // enable attr
+
+ //
+ // Setup hidden RAMDAC command register
+ //
+ in8(0x3C8); // these reads are
+ in8(0x3C6); // necessary to
+ in8(0x3C6); // unmask the RAMDAC
+ in8(0x3C6); // command reg, otherwise
+ in8(0x3C6); // we would write the pixelmask reg!
+ out8(0x3C6,(bpp == 8) ? 0x00 : // 256 colors
+ (bpp == 15) ? 0x10 : //
+ (bpp == 16) ? 0x30 : // hicolor
+ (bpp == 24) ? 0xD0 : // truecolor
+ (bpp == 32) ? 0xD0 : 0); // truecolor
+ in8(0x3C8);
+
+ //
+ // GR31 is not mentioned in the datasheet
+ //
+ if (displaytype == DISPLAY_FP)
+ write3CE(GR31,(read3CE(GR31) & 0x8F) |
+ ((info->var.yres > 1024) ? 0x50 :
+ (info->var.yres > 768) ? 0x30 :
+ (info->var.yres > 600) ? 0x20 :
+ (info->var.yres > 480) ? 0x10 : 0));
+
+ info->fix.visual = (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR
+ : FB_VISUAL_TRUECOLOR;
+ info->fix.line_length = info->var.xres * (bpp >> 3);
+ info->cmap.len = (bpp == 8) ? 256: 16;
+
+ //
+ // init acceleration engine
+ //
+ cyblafb_setup_GE(info->var.xres,info->var.bits_per_pixel);
+
+ regdump(par);
+
+ return 0;
+}
+
+//========================
+//
+// Set one color register
+//
+//========================
+
+static int cyblafb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
+{
+ int bpp = info->var.bits_per_pixel;
+
+ if (regno >= info->cmap.len)
+ return 1;
+
+ if (bpp == 8) {
+ out8(0x3C6,0xFF);
+ out8(0x3C8,regno);
+ out8(0x3C9,red>>10);
+ out8(0x3C9,green>>10);
+ out8(0x3C9,blue>>10);
+
+ } else if (bpp == 16) // RGB 565
+ ((u32*)info->pseudo_palette)[regno] =
+ (red & 0xF800) |
+ ((green & 0xFC00) >> 5) |
+ ((blue & 0xF800) >> 11);
+ else if (bpp == 32) // ARGB 8888
+ ((u32*)info->pseudo_palette)[regno] =
+ ((transp & 0xFF00) <<16) |
+ ((red & 0xFF00) << 8) |
+ ((green & 0xFF00)) |
+ ((blue & 0xFF00)>>8);
+
+ return 0;
+}
+
+//==========================================================
+//
+// Try blanking the screen. For flat panels it does nothing
+//
+//==========================================================
+
+static int cyblafb_blank(int blank_mode, struct fb_info *info)
+{
+ unsigned char PMCont,DPMSCont;
+
+ if (displaytype == DISPLAY_FP)
+ return 0;
+
+ out8(0x83C8,0x04); // DPMS Control
+ PMCont = in8(0x83C6) & 0xFC;
+
+ DPMSCont = read3CE(GR23) & 0xFC;
+
+ switch (blank_mode)
+ {
+ case FB_BLANK_UNBLANK: // Screen: On, HSync: On, VSync: On
+ case FB_BLANK_NORMAL: // Screen: Off, HSync: On, VSync: On
+ PMCont |= 0x03;
+ DPMSCont |= 0x00;
+ break;
+ case FB_BLANK_HSYNC_SUSPEND: // Screen: Off, HSync: Off, VSync: On
+ PMCont |= 0x02;
+ DPMSCont |= 0x01;
+ break;
+ case FB_BLANK_VSYNC_SUSPEND: // Screen: Off, HSync: On, VSync: Off
+ PMCont |= 0x02;
+ DPMSCont |= 0x02;
+ break;
+ case FB_BLANK_POWERDOWN: // Screen: Off, HSync: Off, VSync: Off
+ PMCont |= 0x00;
+ DPMSCont |= 0x03;
+ break;
+ }
+
+ write3CE(GR23,DPMSCont);
+ out8(0x83C8,4);
+ out8(0x83C6,PMCont);
+ //
+ // let fbcon do a softblank for us
+ //
+ return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0;
+}
+
+static struct fb_ops cyblafb_ops __devinitdata = {
+ .owner = THIS_MODULE,
+ .fb_setcolreg = cyblafb_setcolreg,
+ .fb_pan_display = cyblafb_pan_display,
+ .fb_blank = cyblafb_blank,
+ .fb_check_var = cyblafb_check_var,
+ .fb_set_par = cyblafb_set_par,
+ .fb_fillrect = cyblafb_fillrect,
+ .fb_copyarea= cyblafb_copyarea,
+ .fb_imageblit = cyblafb_imageblit,
+ .fb_cursor = soft_cursor,
+};
+
+//==========================================================================
+//
+// getstartupmode() decides about the inital video mode
+//
+// There is no reason to use modedb, a lot of video modes there would
+// need altered timings to display correctly. So I decided that it is much
+// better to provide a limited optimized set of modes plus the option of
+// using the mode in effect at startup time (might be selected using the
+// vga=??? paramter). After that the user might use fbset to select any
+// mode he likes, check_var will not try to alter geometry parameters as
+// it would be necessary otherwise.
+//
+//==========================================================================
+
+static int __devinit getstartupmode(struct fb_info *info)
+{
+ u32 htotal,hdispend,hsyncstart,hsyncend,hblankstart,hblankend,
+ vtotal,vdispend,vsyncstart,vsyncend,vblankstart,vblankend,
+ cr00,cr01,cr02,cr03,cr04,cr05,cr2b,
+ cr06,cr07,cr09,cr10,cr11,cr12,cr15,cr16,cr27,
+ cr38,
+ sr0d,sr18,sr19,
+ gr0f,
+ fi,pxclkdiv,vclkdiv,tmp,i;
+
+ struct modus {
+ int xres; int yres; int vyres; int bpp; int pxclk;
+ int left_margin; int right_margin; int upper_margin;
+ int lower_margin; int hsync_len; int vsync_len;
+ } modedb[5] = {
+ { 0, 0, 8000, 0, 0, 0, 0, 0, 0, 0, 0},
+ { 640, 480, 3756, 0, 0, -40, 24, 17, 0, 216, 3},
+ { 800, 600, 3221, 0, 0, 96, 24, 14, 0, 136, 11},
+ {1024, 768, 2815, 0, 0, 144, 24, 29, 0, 120, 3},
+ {1280, 1024, 2662, 0, 0, 232, 16, 39, 0, 160, 3}
+ };
+
+ outb(0x00,0x3d4); cr00=inb(0x3d5); outb(0x01,0x3d4); cr01=inb(0x3d5);
+ outb(0x02,0x3d4); cr02=inb(0x3d5); outb(0x03,0x3d4); cr03=inb(0x3d5);
+ outb(0x04,0x3d4); cr04=inb(0x3d5); outb(0x05,0x3d4); cr05=inb(0x3d5);
+ outb(0x06,0x3d4); cr06=inb(0x3d5); outb(0x07,0x3d4); cr07=inb(0x3d5);
+ outb(0x09,0x3d4); cr09=inb(0x3d5); outb(0x10,0x3d4); cr10=inb(0x3d5);
+ outb(0x11,0x3d4); cr11=inb(0x3d5); outb(0x12,0x3d4); cr12=inb(0x3d5);
+ outb(0x15,0x3d4); cr15=inb(0x3d5); outb(0x16,0x3d4); cr16=inb(0x3d5);
+ outb(0x27,0x3d4); cr27=inb(0x3d5); outb(0x2b,0x3d4); cr2b=inb(0x3d5);
+ outb(0x38,0x3d4); cr38=inb(0x3d5); outb(0x0b,0x3c4); inb(0x3c5);
+ outb(0x0d,0x3c4); sr0d=inb(0x3c5); outb(0x18,0x3c4); sr18=inb(0x3c5);
+ outb(0x19,0x3c4); sr19=inb(0x3c5); outb(0x0f,0x3ce); gr0f=inb(0x3cf);
+
+ htotal = cr00 | (cr2b & 0x01) << 8;
+ hdispend = cr01 | (cr2b & 0x02) << 7;
+ hblankstart = cr02 | (cr2b & 0x10) << 4;
+ hblankend = (cr03 & 0x1f) | (cr05 & 0x80) >> 2;
+ hsyncstart = cr04 | (cr2b & 0x08) << 5;
+ hsyncend = cr05 & 0x1f;
+
+ modedb[0].xres = hblankstart * 8;
+ modedb[0].hsync_len = hsyncend * 8;
+ modedb[0].right_margin = hsyncstart * 8 - modedb[0].xres;
+ modedb[0].left_margin = (htotal + 5) * 8 - modedb[0].xres -
+ modedb[0].right_margin - modedb[0].hsync_len;
+
+ vtotal = cr06 | (cr07 & 0x01) << 8 | (cr07 & 0x20) << 4
+ | (cr27 & 0x80) << 3;
+ vdispend = cr12 | (cr07 & 0x02) << 7 | (cr07 & 0x40) << 3
+ | (cr27 & 0x10) << 6;
+ vsyncstart = cr10 | (cr07 & 0x04) << 6 | (cr07 & 0x80) << 2
+ | (cr27 & 0x20) << 5;
+ vsyncend = cr11 & 0x0f;
+ vblankstart = cr15 | (cr07 & 0x08) << 5 | (cr09 & 0x20) << 4
+ | (cr27 & 0x40) << 4;
+ vblankend = cr16;
+
+ modedb[0].yres = vdispend + 1;
+ modedb[0].vsync_len = vsyncend;
+ modedb[0].lower_margin = vsyncstart - modedb[0].yres;
+ modedb[0].upper_margin = vtotal - modedb[0].yres -
+ modedb[0].lower_margin - modedb[0].vsync_len + 2;
+
+ tmp = cr38 & 0x3c;
+ modedb[0].bpp = tmp == 0 ? 8 : tmp == 4 ? 16 : tmp == 28 ? 24 :
+ tmp == 8 ? 32 : 8;
+
+ fi = ((5864727*(sr18+8))/(((sr19&0x3f)+2)*(1<<((sr19&0xc0)>>6))))>>12;
+ pxclkdiv = ((gr0f & 0x08) >> 3 | (gr0f & 0x40) >> 5) + 1;
+ tmp = sr0d & 0x06;
+ vclkdiv = tmp == 0 ? 2 : tmp == 2 ? 4 : tmp == 4 ? 8 : 3; // * 2 !
+ modedb[0].pxclk = ((100000000 * pxclkdiv * vclkdiv) >> 1) / fi;
+
+ if (verbosity > 0)
+ output("detected startup mode: "
+ "fbset -g %d %d %d ??? %d -t %d %d %d %d %d %d %d\n",
+ modedb[0].xres,modedb[0].yres,modedb[0].xres,
+ modedb[0].bpp,modedb[0].pxclk,modedb[0].left_margin,
+ modedb[0].right_margin,modedb[0].upper_margin,
+ modedb[0].lower_margin,modedb[0].hsync_len,
+ modedb[0].vsync_len);
+
+ //
+ // We use this goto target in case of a failed check_var. No, I really
+ // do not want to do it in another way!
+ //
+
+ tryagain:
+
+ i = (mode == NULL) ? 0 :
+ !strncmp(mode,"640x480",7) ? 1 :
+ !strncmp(mode,"800x600",7) ? 2 :
+ !strncmp(mode,"1024x768",8) ? 3 :
+ !strncmp(mode,"1280x1024",9) ? 4 : 0;
+
+ ref = (ref < 50) ? 50 : (ref > 85) ? 85 : ref;
+
+ if(i==0) {
+ info->var.pixclock = modedb[i].pxclk;
+ info->var.bits_per_pixel = modedb[i].bpp;
+ } else {
+ info->var.pixclock = (100000000 /
+ ((modedb[i].left_margin + modedb[i].xres +
+ modedb[i].right_margin + modedb[i].hsync_len
+ ) * (
+ modedb[i].upper_margin + modedb[i].yres +
+ modedb[i].lower_margin + modedb[i].vsync_len
+ ) *
+ ref / 10000
+ ));
+ info->var.bits_per_pixel = bpp;
+ }
+
+ info->var.left_margin = modedb[i].left_margin;
+ info->var.right_margin = modedb[i].right_margin;
+ info->var.xres = modedb[i].xres;
+ info->var.xres_virtual = modedb[i].xres;
+ info->var.xoffset = 0;
+ info->var.hsync_len = modedb[i].hsync_len;
+ info->var.upper_margin = modedb[i].upper_margin;
+ info->var.yres = modedb[i].yres;
+ info->var.yres_virtual = modedb[i].vyres;
+ info->var.yoffset = 0;
+ info->var.lower_margin = modedb[i].lower_margin;
+ info->var.vsync_len = modedb[i].vsync_len;
+ info->var.sync = 0;
+ info->var.vmode = FB_VMODE_NONINTERLACED;
+
+ if(cyblafb_check_var(&info->var,info)) {
+ // 640x480-8@75 should really never fail. One case would
+ // be fp == 1 and nativex < 640 ... give up then
+ if(i==1 && bpp == 8 && ref == 75){
+ output("Can't find a valid mode :-(\n");
+ return -EINVAL;
+ }
+ // Our detected mode is unlikely to fail. If it does,
+ // try 640x480-8@75 ...
+ if(i==0) {
+ mode="640x480";
+ bpp=8;
+ ref=75;
+ output("Detected mode failed check_var! "
+ "Trying 640x480-8@75\n");
+ goto tryagain;
+ }
+ // A specified video mode failed for some reason.
+ // Try the startup mode first
+ output("Specified mode '%s' failed check! "
+ "Falling back to startup mode.\n",mode);
+ mode=NULL;
+ goto tryagain;
+ }
+
+ return 0;
+
+}
+
+//========================================================
+//
+// Detect activated memory size. Undefined values require
+// memsize parameter.
+//
+//========================================================
+
+static unsigned int __devinit get_memsize(void)
+{
+ unsigned char tmp;
+ unsigned int k;
+
+ if (memsize)
+ k = memsize * Kb;
+ else {
+ tmp = read3X4(CR1F) & 0x0F;
+ switch (tmp) {
+ case 0x03: k = 1 * Mb; break;
+ case 0x07: k = 2 * Mb; break;
+ case 0x0F: k = 4 * Mb; break;
+ case 0x04: k = 8 * Mb; break;
+ default:
+ k = 1 * Mb;
+ output("Unknown memory size code %x in CR1F."
+ " We default to 1 Mb for now, please"
+ " do provide a memsize parameter!\n",
+ tmp);
+ }
+ }
+
+ if (verbosity > 0)
+ output("framebuffer size = %d Kb\n",k/Kb);
+ return k;
+}
+
+//=========================================================
+//
+// Detect if a flat panel monitor connected to the special
+// interface is active. Override is possible by fp and crt
+// parameters.
+//
+//=========================================================
+
+static unsigned int __devinit get_displaytype(void)
+{
+ if (fp)
+ return DISPLAY_FP;
+ if (crt)
+ return DISPLAY_CRT;
+ return (read3CE(GR33) & 0x10)?DISPLAY_FP:DISPLAY_CRT;
+}
+
+//=====================================
+//
+// Get native resolution of flat panel
+//
+//=====================================
+
+static int __devinit get_nativex(void)
+{
+ int x,y,tmp;
+
+ if (nativex)
+ return nativex;
+
+ tmp = (read3CE(GR52) >> 4) & 3;
+
+ switch (tmp) {
+ case 0: x = 1280; y = 1024; break;
+ case 2: x = 1024; y = 768; break;
+ case 3: x = 800; y = 600; break;
+ case 4: x = 1400; y = 1050; break;
+ case 1:
+ default: x = 640; y = 480; break;
+ }
+
+ if (verbosity > 0)
+ output("%dx%d flat panel found\n",x,y);
+ return x;
+}
+
+static int __devinit cybla_pci_probe(struct pci_dev * dev,
+ const struct pci_device_id * id)
+{
+ struct fb_info *info;
+ struct cyblafb_par *par;
+
+ info = framebuffer_alloc(sizeof(struct cyblafb_par),&dev->dev);
+
+ if (!info)
+ goto errout_alloc;
+
+ par = info->par;
+ par->ops = cyblafb_ops;
+
+ info->fix = cyblafb_fix;
+ info->fbops = &par->ops;
+ info->fix = cyblafb_fix;
+
+ if (pci_enable_device(dev)) {
+ output("could not enable device!\n");
+ goto errout_enable;
+ }
+
+ // might already be requested by vga console or vesafb,
+ // so we do care about success
+ request_region(0x3c0,32,"cyblafb");
+
+ //
+ // Graphics Engine Registers
+ //
+ request_region(GEBase,0x100,"cyblafb");
+
+ regdump(par);
+
+ enable_mmio();
+
+ // setup MMIO region
+ info->fix.mmio_start = pci_resource_start(dev,1);
+ info->fix.mmio_len = 0x20000;
+
+ if (!request_mem_region(info->fix.mmio_start,
+ info->fix.mmio_len,"cyblafb")) {
+ output("request_mem_region failed for mmio region!\n");
+ goto errout_mmio_reqmem;
+ }
+
+ io_virt = ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
+
+ if (!io_virt) {
+ output("ioremap failed for mmio region\n");
+ goto errout_mmio_remap;
+ }
+
+ // setup framebuffer memory ... might already be requested
+ // by vesafb. Not to fail in case of an unsuccessful request
+ // is useful for the development cycle
+ info->fix.smem_start = pci_resource_start(dev,0);
+ info->fix.smem_len = get_memsize();
+
+ if (!request_mem_region(info->fix.smem_start,
+ info->fix.smem_len,"cyblafb")) {
+ output("request_mem_region failed for smem region!\n");
+ if (!vesafb)
+ goto errout_smem_req;
+ }
+
+ info->screen_base = ioremap_nocache(info->fix.smem_start,
+ info->fix.smem_len);
+
+ if (!info->screen_base) {
+ output("ioremap failed for smem region\n");
+ goto errout_smem_remap;
+ }
+
+ displaytype = get_displaytype();
+
+ if(displaytype == DISPLAY_FP)
+ nativex = get_nativex();
+
+ //
+ // FBINFO_HWACCEL_YWRAP .... does not work (could be made to work?)
+ // FBINFO_PARTIAL_PAN_OK .... is not ok
+ // FBINFO_READS_FAST .... is necessary for optimal scrolling
+ //
+ info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN
+ | FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT
+ | FBINFO_HWACCEL_IMAGEBLIT | FBINFO_READS_FAST;
+
+ info->pseudo_palette = par->pseudo_pal;
+
+ if(getstartupmode(info))
+ goto errout_findmode;
+
+ fb_alloc_cmap(&info->cmap,256,0);
+
+ if (register_framebuffer(info)) {
+ output("Could not register CyBla framebuffer\n");
+ goto errout_register;
+ }
+
+ pci_set_drvdata(dev,info);
+
+ //
+ // normal exit and error paths
+ //
+
+ return 0;
+
+ errout_register:
+ errout_findmode:
+ iounmap(info->screen_base);
+ errout_smem_remap:
+ release_mem_region(info->fix.smem_start,
+ info->fix.smem_len);
+ errout_smem_req:
+ iounmap(io_virt);
+ errout_mmio_remap:
+ release_mem_region(info->fix.mmio_start,
+ info->fix.mmio_len);
+ errout_mmio_reqmem:
+// release_region(0x3c0,32);
+ errout_enable:
+ framebuffer_release(info);
+ errout_alloc:
+ output("CyblaFB version %s aborting init.\n",VERSION);
+ return -ENODEV;
+}
+
+static void __devexit cybla_pci_remove(struct pci_dev *dev)
+{
+ struct fb_info *info = pci_get_drvdata(dev);
+
+ unregister_framebuffer(info);
+ iounmap(io_virt);
+ iounmap(info->screen_base);
+ release_mem_region(info->fix.smem_start,info->fix.smem_len);
+ release_mem_region(info->fix.mmio_start,info->fix.mmio_len);
+ fb_dealloc_cmap(&info->cmap);
+ framebuffer_release(info);
+ output("CyblaFB version %s normal exit.\n",VERSION);
+}
+
+//
+// List of boards that we are trying to support
+//
+static struct pci_device_id cybla_devices[] = {
+ {PCI_VENDOR_ID_TRIDENT,CYBERBLADEi1,PCI_ANY_ID,PCI_ANY_ID,0,0,0},
+ {0,}
+};
+
+MODULE_DEVICE_TABLE(pci,cybla_devices);
+
+static struct pci_driver cyblafb_pci_driver = {
+ .name = "cyblafb",
+ .id_table = cybla_devices,
+ .probe = cybla_pci_probe,
+ .remove = __devexit_p(cybla_pci_remove)
+};
+
+//=============================================================
+//
+// kernel command line example:
+//
+// video=cyblafb:1280x1024,bpp=16,ref=50 ...
+//
+// modprobe command line example:
+//
+// modprobe cyblafb mode=1280x1024 bpp=16 ref=50 ...
+//
+//=============================================================
+
+static int __devinit cyblafb_init(void)
+{
+#ifndef MODULE
+ char *options = NULL;
+ char *opt;
+
+ if (fb_get_options("cyblafb",&options))
+ return -ENODEV;
+
+ if (options && *options)
+ while((opt = strsep(&options,",")) != NULL ) {
+ if (!*opt) continue;
+ else if (!strncmp(opt,"bpp=",4))
+ bpp = simple_strtoul(opt+4,NULL,0);
+ else if (!strncmp(opt,"ref=",4))
+ ref = simple_strtoul(opt+4,NULL,0);
+ else if (!strncmp(opt,"fp",2))
+ displaytype = DISPLAY_FP;
+ else if (!strncmp(opt,"crt",3))
+ displaytype = DISPLAY_CRT;
+ else if (!strncmp(opt,"nativex=",8))
+ nativex = simple_strtoul(opt+8,NULL,0);
+ else if (!strncmp(opt,"center",6))
+ center = 1;
+ else if (!strncmp(opt,"stretch",7))
+ stretch = 1;
+ else if (!strncmp(opt,"pciwb=",6))
+ pciwb = simple_strtoul(opt+6,NULL,0);
+ else if (!strncmp(opt,"pcirb=",6))
+ pcirb = simple_strtoul(opt+6,NULL,0);
+ else if (!strncmp(opt,"pciwr=",6))
+ pciwr = simple_strtoul(opt+6,NULL,0);
+ else if (!strncmp(opt,"pcirr=",6))
+ pcirr = simple_strtoul(opt+6,NULL,0);
+ else if (!strncmp(opt,"memsize=",8))
+ memsize = simple_strtoul(opt+8,NULL,0);
+ else if (!strncmp(opt,"verbosity=",10))
+ verbosity = simple_strtoul(opt+10,NULL,0);
+ else if (!strncmp(opt,"vesafb",6))
+ vesafb = 1;
+ else
+ mode = opt;
+ }
+#endif
+ output("CyblaFB version %s initializing\n",VERSION);
+ return pci_module_init(&cyblafb_pci_driver);
+}
+
+static void __exit cyblafb_exit(void)
+{
+ pci_unregister_driver(&cyblafb_pci_driver);
+}
+
+module_init(cyblafb_init);
+module_exit(cyblafb_exit);
+
+MODULE_AUTHOR("Knut Petersen <knut_petersen@t-online.de>");
+MODULE_DESCRIPTION("Framebuffer driver for Cyberblade/i1 graphics core");
+MODULE_LICENSE("GPL");