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kernel-ark/drivers/video/ffb.c
David S. Miller 37db9a348a [VIDEO] ffb: Fix two DAC handling bugs. 
The determination of whether the DAC has inverted cursor logic is
broken, import the version checks the X.org driver uses to fix this.

Next, when we change the timing generator, borrow code from X.org that
does 10 NOP reads of the timing generator register afterwards to make
sure the video-enable transition occurs cleanly.

Finally, use macros for the DAC registers and fields in order to
provide documentation for the next person who reads this code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-26 23:18:09 -07:00

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/* ffb.c: Creator/Elite3D frame buffer driver
*
* Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
* Copyright (C) 1997,1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
*
* Driver layout based loosely on tgafb.c, see that file for credits.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/fb.h>
#include <linux/mm.h>
#include <linux/timer.h>
#include <asm/io.h>
#include <asm/upa.h>
#include <asm/prom.h>
#include <asm/of_device.h>
#include <asm/fbio.h>
#include "sbuslib.h"
/*
* Local functions.
*/
static int ffb_setcolreg(unsigned, unsigned, unsigned, unsigned,
unsigned, struct fb_info *);
static int ffb_blank(int, struct fb_info *);
static void ffb_init_fix(struct fb_info *);
static void ffb_imageblit(struct fb_info *, const struct fb_image *);
static void ffb_fillrect(struct fb_info *, const struct fb_fillrect *);
static void ffb_copyarea(struct fb_info *, const struct fb_copyarea *);
static int ffb_sync(struct fb_info *);
static int ffb_mmap(struct fb_info *, struct vm_area_struct *);
static int ffb_ioctl(struct fb_info *, unsigned int, unsigned long);
static int ffb_pan_display(struct fb_var_screeninfo *, struct fb_info *);
/*
* Frame buffer operations
*/
static struct fb_ops ffb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = ffb_setcolreg,
.fb_blank = ffb_blank,
.fb_pan_display = ffb_pan_display,
.fb_fillrect = ffb_fillrect,
.fb_copyarea = ffb_copyarea,
.fb_imageblit = ffb_imageblit,
.fb_sync = ffb_sync,
.fb_mmap = ffb_mmap,
.fb_ioctl = ffb_ioctl,
#ifdef CONFIG_COMPAT
.fb_compat_ioctl = sbusfb_compat_ioctl,
#endif
};
/* Register layout and definitions */
#define FFB_SFB8R_VOFF 0x00000000
#define FFB_SFB8G_VOFF 0x00400000
#define FFB_SFB8B_VOFF 0x00800000
#define FFB_SFB8X_VOFF 0x00c00000
#define FFB_SFB32_VOFF 0x01000000
#define FFB_SFB64_VOFF 0x02000000
#define FFB_FBC_REGS_VOFF 0x04000000
#define FFB_BM_FBC_REGS_VOFF 0x04002000
#define FFB_DFB8R_VOFF 0x04004000
#define FFB_DFB8G_VOFF 0x04404000
#define FFB_DFB8B_VOFF 0x04804000
#define FFB_DFB8X_VOFF 0x04c04000
#define FFB_DFB24_VOFF 0x05004000
#define FFB_DFB32_VOFF 0x06004000
#define FFB_DFB422A_VOFF 0x07004000 /* DFB 422 mode write to A */
#define FFB_DFB422AD_VOFF 0x07804000 /* DFB 422 mode with line doubling */
#define FFB_DFB24B_VOFF 0x08004000 /* DFB 24bit mode write to B */
#define FFB_DFB422B_VOFF 0x09004000 /* DFB 422 mode write to B */
#define FFB_DFB422BD_VOFF 0x09804000 /* DFB 422 mode with line doubling */
#define FFB_SFB16Z_VOFF 0x0a004000 /* 16bit mode Z planes */
#define FFB_SFB8Z_VOFF 0x0a404000 /* 8bit mode Z planes */
#define FFB_SFB422_VOFF 0x0ac04000 /* SFB 422 mode write to A/B */
#define FFB_SFB422D_VOFF 0x0b404000 /* SFB 422 mode with line doubling */
#define FFB_FBC_KREGS_VOFF 0x0bc04000
#define FFB_DAC_VOFF 0x0bc06000
#define FFB_PROM_VOFF 0x0bc08000
#define FFB_EXP_VOFF 0x0bc18000
#define FFB_SFB8R_POFF 0x04000000UL
#define FFB_SFB8G_POFF 0x04400000UL
#define FFB_SFB8B_POFF 0x04800000UL
#define FFB_SFB8X_POFF 0x04c00000UL
#define FFB_SFB32_POFF 0x05000000UL
#define FFB_SFB64_POFF 0x06000000UL
#define FFB_FBC_REGS_POFF 0x00600000UL
#define FFB_BM_FBC_REGS_POFF 0x00600000UL
#define FFB_DFB8R_POFF 0x01000000UL
#define FFB_DFB8G_POFF 0x01400000UL
#define FFB_DFB8B_POFF 0x01800000UL
#define FFB_DFB8X_POFF 0x01c00000UL
#define FFB_DFB24_POFF 0x02000000UL
#define FFB_DFB32_POFF 0x03000000UL
#define FFB_FBC_KREGS_POFF 0x00610000UL
#define FFB_DAC_POFF 0x00400000UL
#define FFB_PROM_POFF 0x00000000UL
#define FFB_EXP_POFF 0x00200000UL
#define FFB_DFB422A_POFF 0x09000000UL
#define FFB_DFB422AD_POFF 0x09800000UL
#define FFB_DFB24B_POFF 0x0a000000UL
#define FFB_DFB422B_POFF 0x0b000000UL
#define FFB_DFB422BD_POFF 0x0b800000UL
#define FFB_SFB16Z_POFF 0x0c800000UL
#define FFB_SFB8Z_POFF 0x0c000000UL
#define FFB_SFB422_POFF 0x0d000000UL
#define FFB_SFB422D_POFF 0x0d800000UL
/* Draw operations */
#define FFB_DRAWOP_DOT 0x00
#define FFB_DRAWOP_AADOT 0x01
#define FFB_DRAWOP_BRLINECAP 0x02
#define FFB_DRAWOP_BRLINEOPEN 0x03
#define FFB_DRAWOP_DDLINE 0x04
#define FFB_DRAWOP_AALINE 0x05
#define FFB_DRAWOP_TRIANGLE 0x06
#define FFB_DRAWOP_POLYGON 0x07
#define FFB_DRAWOP_RECTANGLE 0x08
#define FFB_DRAWOP_FASTFILL 0x09
#define FFB_DRAWOP_BCOPY 0x0a
#define FFB_DRAWOP_VSCROLL 0x0b
/* Pixel processor control */
/* Force WID */
#define FFB_PPC_FW_DISABLE 0x800000
#define FFB_PPC_FW_ENABLE 0xc00000
/* Auxiliary clip */
#define FFB_PPC_ACE_DISABLE 0x040000
#define FFB_PPC_ACE_AUX_SUB 0x080000
#define FFB_PPC_ACE_AUX_ADD 0x0c0000
/* Depth cue */
#define FFB_PPC_DCE_DISABLE 0x020000
#define FFB_PPC_DCE_ENABLE 0x030000
/* Alpha blend */
#define FFB_PPC_ABE_DISABLE 0x008000
#define FFB_PPC_ABE_ENABLE 0x00c000
/* View clip */
#define FFB_PPC_VCE_DISABLE 0x001000
#define FFB_PPC_VCE_2D 0x002000
#define FFB_PPC_VCE_3D 0x003000
/* Area pattern */
#define FFB_PPC_APE_DISABLE 0x000800
#define FFB_PPC_APE_ENABLE 0x000c00
/* Transparent background */
#define FFB_PPC_TBE_OPAQUE 0x000200
#define FFB_PPC_TBE_TRANSPARENT 0x000300
/* Z source */
#define FFB_PPC_ZS_VAR 0x000080
#define FFB_PPC_ZS_CONST 0x0000c0
/* Y source */
#define FFB_PPC_YS_VAR 0x000020
#define FFB_PPC_YS_CONST 0x000030
/* X source */
#define FFB_PPC_XS_WID 0x000004
#define FFB_PPC_XS_VAR 0x000008
#define FFB_PPC_XS_CONST 0x00000c
/* Color (BGR) source */
#define FFB_PPC_CS_VAR 0x000002
#define FFB_PPC_CS_CONST 0x000003
#define FFB_ROP_NEW 0x83
#define FFB_ROP_OLD 0x85
#define FFB_ROP_NEW_XOR_OLD 0x86
#define FFB_UCSR_FIFO_MASK 0x00000fff
#define FFB_UCSR_FB_BUSY 0x01000000
#define FFB_UCSR_RP_BUSY 0x02000000
#define FFB_UCSR_ALL_BUSY (FFB_UCSR_RP_BUSY|FFB_UCSR_FB_BUSY)
#define FFB_UCSR_READ_ERR 0x40000000
#define FFB_UCSR_FIFO_OVFL 0x80000000
#define FFB_UCSR_ALL_ERRORS (FFB_UCSR_READ_ERR|FFB_UCSR_FIFO_OVFL)
struct ffb_fbc {
/* Next vertex registers */
u32 xxx1[3];
u32 alpha;
u32 red;
u32 green;
u32 blue;
u32 depth;
u32 y;
u32 x;
u32 xxx2[2];
u32 ryf;
u32 rxf;
u32 xxx3[2];
u32 dmyf;
u32 dmxf;
u32 xxx4[2];
u32 ebyi;
u32 ebxi;
u32 xxx5[2];
u32 by;
u32 bx;
u32 dy;
u32 dx;
u32 bh;
u32 bw;
u32 xxx6[2];
u32 xxx7[32];
/* Setup unit vertex state register */
u32 suvtx;
u32 xxx8[63];
/* Control registers */
u32 ppc;
u32 wid;
u32 fg;
u32 bg;
u32 consty;
u32 constz;
u32 xclip;
u32 dcss;
u32 vclipmin;
u32 vclipmax;
u32 vclipzmin;
u32 vclipzmax;
u32 dcsf;
u32 dcsb;
u32 dczf;
u32 dczb;
u32 xxx9;
u32 blendc;
u32 blendc1;
u32 blendc2;
u32 fbramitc;
u32 fbc;
u32 rop;
u32 cmp;
u32 matchab;
u32 matchc;
u32 magnab;
u32 magnc;
u32 fbcfg0;
u32 fbcfg1;
u32 fbcfg2;
u32 fbcfg3;
u32 ppcfg;
u32 pick;
u32 fillmode;
u32 fbramwac;
u32 pmask;
u32 xpmask;
u32 ypmask;
u32 zpmask;
u32 clip0min;
u32 clip0max;
u32 clip1min;
u32 clip1max;
u32 clip2min;
u32 clip2max;
u32 clip3min;
u32 clip3max;
/* New 3dRAM III support regs */
u32 rawblend2;
u32 rawpreblend;
u32 rawstencil;
u32 rawstencilctl;
u32 threedram1;
u32 threedram2;
u32 passin;
u32 rawclrdepth;
u32 rawpmask;
u32 rawcsrc;
u32 rawmatch;
u32 rawmagn;
u32 rawropblend;
u32 rawcmp;
u32 rawwac;
u32 fbramid;
u32 drawop;
u32 xxx10[2];
u32 fontlpat;
u32 xxx11;
u32 fontxy;
u32 fontw;
u32 fontinc;
u32 font;
u32 xxx12[3];
u32 blend2;
u32 preblend;
u32 stencil;
u32 stencilctl;
u32 xxx13[4];
u32 dcss1;
u32 dcss2;
u32 dcss3;
u32 widpmask;
u32 dcs2;
u32 dcs3;
u32 dcs4;
u32 xxx14;
u32 dcd2;
u32 dcd3;
u32 dcd4;
u32 xxx15;
u32 pattern[32];
u32 xxx16[256];
u32 devid;
u32 xxx17[63];
u32 ucsr;
u32 xxx18[31];
u32 mer;
};
struct ffb_dac {
u32 type;
u32 value;
u32 type2;
u32 value2;
};
#define FFB_DAC_UCTRL 0x1001 /* User Control */
#define FFB_DAC_UCTRL_MANREV 0x00000f00 /* 4-bit Manufacturing Revision */
#define FFB_DAC_UCTRL_MANREV_SHIFT 8
#define FFB_DAC_TGEN 0x6000 /* Timing Generator */
#define FFB_DAC_TGEN_VIDE 0x00000001 /* Video Enable */
#define FFB_DAC_DID 0x8000 /* Device Identification */
#define FFB_DAC_DID_PNUM 0x0ffff000 /* Device Part Number */
#define FFB_DAC_DID_PNUM_SHIFT 12
#define FFB_DAC_DID_REV 0xf0000000 /* Device Revision */
#define FFB_DAC_DID_REV_SHIFT 28
#define FFB_DAC_CUR_CTRL 0x100
#define FFB_DAC_CUR_CTRL_P0 0x00000001
#define FFB_DAC_CUR_CTRL_P1 0x00000002
struct ffb_par {
spinlock_t lock;
struct ffb_fbc __iomem *fbc;
struct ffb_dac __iomem *dac;
u32 flags;
#define FFB_FLAG_AFB 0x00000001 /* AFB m3 or m6 */
#define FFB_FLAG_BLANKED 0x00000002 /* screen is blanked */
#define FFB_FLAG_INVCURSOR 0x00000004 /* DAC has inverted cursor logic */
u32 fg_cache __attribute__((aligned (8)));
u32 bg_cache;
u32 rop_cache;
int fifo_cache;
unsigned long physbase;
unsigned long fbsize;
int board_type;
};
static void FFBFifo(struct ffb_par *par, int n)
{
struct ffb_fbc __iomem *fbc;
int cache = par->fifo_cache;
if (cache - n < 0) {
fbc = par->fbc;
do { cache = (upa_readl(&fbc->ucsr) & FFB_UCSR_FIFO_MASK) - 8;
} while (cache - n < 0);
}
par->fifo_cache = cache - n;
}
static void FFBWait(struct ffb_par *par)
{
struct ffb_fbc __iomem *fbc;
int limit = 10000;
fbc = par->fbc;
do {
if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_BUSY) == 0)
break;
if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0) {
upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
}
udelay(10);
} while(--limit > 0);
}
static int ffb_sync(struct fb_info *p)
{
struct ffb_par *par = (struct ffb_par *) p->par;
FFBWait(par);
return 0;
}
static __inline__ void ffb_rop(struct ffb_par *par, u32 rop)
{
if (par->rop_cache != rop) {
FFBFifo(par, 1);
upa_writel(rop, &par->fbc->rop);
par->rop_cache = rop;
}
}
static void ffb_switch_from_graph(struct ffb_par *par)
{
struct ffb_fbc __iomem *fbc = par->fbc;
struct ffb_dac __iomem *dac = par->dac;
unsigned long flags;
spin_lock_irqsave(&par->lock, flags);
FFBWait(par);
par->fifo_cache = 0;
FFBFifo(par, 7);
upa_writel(FFB_PPC_VCE_DISABLE|FFB_PPC_TBE_OPAQUE|
FFB_PPC_APE_DISABLE|FFB_PPC_CS_CONST,
&fbc->ppc);
upa_writel(0x2000707f, &fbc->fbc);
upa_writel(par->rop_cache, &fbc->rop);
upa_writel(0xffffffff, &fbc->pmask);
upa_writel((1 << 16) | (0 << 0), &fbc->fontinc);
upa_writel(par->fg_cache, &fbc->fg);
upa_writel(par->bg_cache, &fbc->bg);
FFBWait(par);
/* Disable cursor. */
upa_writel(FFB_DAC_CUR_CTRL, &dac->type2);
if (par->flags & FFB_FLAG_INVCURSOR)
upa_writel(0, &dac->value2);
else
upa_writel((FFB_DAC_CUR_CTRL_P0 |
FFB_DAC_CUR_CTRL_P1), &dac->value2);
spin_unlock_irqrestore(&par->lock, flags);
}
static int ffb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct ffb_par *par = (struct ffb_par *) info->par;
/* We just use this to catch switches out of
* graphics mode.
*/
ffb_switch_from_graph(par);
if (var->xoffset || var->yoffset || var->vmode)
return -EINVAL;
return 0;
}
/**
* ffb_fillrect - REQUIRED function. Can use generic routines if
* non acclerated hardware and packed pixel based.
* Draws a rectangle on the screen.
*
* @info: frame buffer structure that represents a single frame buffer
* @rect: structure defining the rectagle and operation.
*/
static void ffb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
struct ffb_par *par = (struct ffb_par *) info->par;
struct ffb_fbc __iomem *fbc = par->fbc;
unsigned long flags;
u32 fg;
BUG_ON(rect->rop != ROP_COPY && rect->rop != ROP_XOR);
fg = ((u32 *)info->pseudo_palette)[rect->color];
spin_lock_irqsave(&par->lock, flags);
if (fg != par->fg_cache) {
FFBFifo(par, 1);
upa_writel(fg, &fbc->fg);
par->fg_cache = fg;
}
ffb_rop(par, (rect->rop == ROP_COPY ?
FFB_ROP_NEW :
FFB_ROP_NEW_XOR_OLD));
FFBFifo(par, 5);
upa_writel(FFB_DRAWOP_RECTANGLE, &fbc->drawop);
upa_writel(rect->dy, &fbc->by);
upa_writel(rect->dx, &fbc->bx);
upa_writel(rect->height, &fbc->bh);
upa_writel(rect->width, &fbc->bw);
spin_unlock_irqrestore(&par->lock, flags);
}
/**
* ffb_copyarea - REQUIRED function. Can use generic routines if
* non acclerated hardware and packed pixel based.
* Copies on area of the screen to another area.
*
* @info: frame buffer structure that represents a single frame buffer
* @area: structure defining the source and destination.
*/
static void
ffb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
{
struct ffb_par *par = (struct ffb_par *) info->par;
struct ffb_fbc __iomem *fbc = par->fbc;
unsigned long flags;
if (area->dx != area->sx ||
area->dy == area->sy) {
cfb_copyarea(info, area);
return;
}
spin_lock_irqsave(&par->lock, flags);
ffb_rop(par, FFB_ROP_OLD);
FFBFifo(par, 7);
upa_writel(FFB_DRAWOP_VSCROLL, &fbc->drawop);
upa_writel(area->sy, &fbc->by);
upa_writel(area->sx, &fbc->bx);
upa_writel(area->dy, &fbc->dy);
upa_writel(area->dx, &fbc->dx);
upa_writel(area->height, &fbc->bh);
upa_writel(area->width, &fbc->bw);
spin_unlock_irqrestore(&par->lock, flags);
}
/**
* ffb_imageblit - REQUIRED function. Can use generic routines if
* non acclerated hardware and packed pixel based.
* Copies a image from system memory to the screen.
*
* @info: frame buffer structure that represents a single frame buffer
* @image: structure defining the image.
*/
static void ffb_imageblit(struct fb_info *info, const struct fb_image *image)
{
struct ffb_par *par = (struct ffb_par *) info->par;
struct ffb_fbc __iomem *fbc = par->fbc;
const u8 *data = image->data;
unsigned long flags;
u32 fg, bg, xy;
u64 fgbg;
int i, width, stride;
if (image->depth > 1) {
cfb_imageblit(info, image);
return;
}
fg = ((u32 *)info->pseudo_palette)[image->fg_color];
bg = ((u32 *)info->pseudo_palette)[image->bg_color];
fgbg = ((u64) fg << 32) | (u64) bg;
xy = (image->dy << 16) | image->dx;
width = image->width;
stride = ((width + 7) >> 3);
spin_lock_irqsave(&par->lock, flags);
if (fgbg != *(u64 *)&par->fg_cache) {
FFBFifo(par, 2);
upa_writeq(fgbg, &fbc->fg);
*(u64 *)&par->fg_cache = fgbg;
}
if (width >= 32) {
FFBFifo(par, 1);
upa_writel(32, &fbc->fontw);
}
while (width >= 32) {
const u8 *next_data = data + 4;
FFBFifo(par, 1);
upa_writel(xy, &fbc->fontxy);
xy += (32 << 0);
for (i = 0; i < image->height; i++) {
u32 val = (((u32)data[0] << 24) |
((u32)data[1] << 16) |
((u32)data[2] << 8) |
((u32)data[3] << 0));
FFBFifo(par, 1);
upa_writel(val, &fbc->font);
data += stride;
}
data = next_data;
width -= 32;
}
if (width) {
FFBFifo(par, 2);
upa_writel(width, &fbc->fontw);
upa_writel(xy, &fbc->fontxy);
for (i = 0; i < image->height; i++) {
u32 val = (((u32)data[0] << 24) |
((u32)data[1] << 16) |
((u32)data[2] << 8) |
((u32)data[3] << 0));
FFBFifo(par, 1);
upa_writel(val, &fbc->font);
data += stride;
}
}
spin_unlock_irqrestore(&par->lock, flags);
}
static void ffb_fixup_var_rgb(struct fb_var_screeninfo *var)
{
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 8;
var->green.length = 8;
var->blue.offset = 16;
var->blue.length = 8;
var->transp.offset = 0;
var->transp.length = 0;
}
/**
* ffb_setcolreg - Optional function. Sets a color register.
* @regno: boolean, 0 copy local, 1 get_user() function
* @red: frame buffer colormap structure
* @green: The green value which can be up to 16 bits wide
* @blue: The blue value which can be up to 16 bits wide.
* @transp: If supported the alpha value which can be up to 16 bits wide.
* @info: frame buffer info structure
*/
static int ffb_setcolreg(unsigned regno,
unsigned red, unsigned green, unsigned blue,
unsigned transp, struct fb_info *info)
{
u32 value;
if (regno >= 256)
return 1;
red >>= 8;
green >>= 8;
blue >>= 8;
value = (blue << 16) | (green << 8) | red;
((u32 *)info->pseudo_palette)[regno] = value;
return 0;
}
/**
* ffb_blank - Optional function. Blanks the display.
* @blank_mode: the blank mode we want.
* @info: frame buffer structure that represents a single frame buffer
*/
static int
ffb_blank(int blank, struct fb_info *info)
{
struct ffb_par *par = (struct ffb_par *) info->par;
struct ffb_dac __iomem *dac = par->dac;
unsigned long flags;
u32 val;
int i;
spin_lock_irqsave(&par->lock, flags);
FFBWait(par);
upa_writel(FFB_DAC_TGEN, &dac->type);
val = upa_readl(&dac->value);
switch (blank) {
case FB_BLANK_UNBLANK: /* Unblanking */
val |= FFB_DAC_TGEN_VIDE;
par->flags &= ~FFB_FLAG_BLANKED;
break;
case FB_BLANK_NORMAL: /* Normal blanking */
case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
case FB_BLANK_POWERDOWN: /* Poweroff */
val &= ~FFB_DAC_TGEN_VIDE;
par->flags |= FFB_FLAG_BLANKED;
break;
}
upa_writel(FFB_DAC_TGEN, &dac->type);
upa_writel(val, &dac->value);
for (i = 0; i < 10; i++) {
upa_writel(FFB_DAC_TGEN, &dac->type);
upa_readl(&dac->value);
}
spin_unlock_irqrestore(&par->lock, flags);
return 0;
}
static struct sbus_mmap_map ffb_mmap_map[] = {
{
.voff = FFB_SFB8R_VOFF,
.poff = FFB_SFB8R_POFF,
.size = 0x0400000
},
{
.voff = FFB_SFB8G_VOFF,
.poff = FFB_SFB8G_POFF,
.size = 0x0400000
},
{
.voff = FFB_SFB8B_VOFF,
.poff = FFB_SFB8B_POFF,
.size = 0x0400000
},
{
.voff = FFB_SFB8X_VOFF,
.poff = FFB_SFB8X_POFF,
.size = 0x0400000
},
{
.voff = FFB_SFB32_VOFF,
.poff = FFB_SFB32_POFF,
.size = 0x1000000
},
{
.voff = FFB_SFB64_VOFF,
.poff = FFB_SFB64_POFF,
.size = 0x2000000
},
{
.voff = FFB_FBC_REGS_VOFF,
.poff = FFB_FBC_REGS_POFF,
.size = 0x0002000
},
{
.voff = FFB_BM_FBC_REGS_VOFF,
.poff = FFB_BM_FBC_REGS_POFF,
.size = 0x0002000
},
{
.voff = FFB_DFB8R_VOFF,
.poff = FFB_DFB8R_POFF,
.size = 0x0400000
},
{
.voff = FFB_DFB8G_VOFF,
.poff = FFB_DFB8G_POFF,
.size = 0x0400000
},
{
.voff = FFB_DFB8B_VOFF,
.poff = FFB_DFB8B_POFF,
.size = 0x0400000
},
{
.voff = FFB_DFB8X_VOFF,
.poff = FFB_DFB8X_POFF,
.size = 0x0400000
},
{
.voff = FFB_DFB24_VOFF,
.poff = FFB_DFB24_POFF,
.size = 0x1000000
},
{
.voff = FFB_DFB32_VOFF,
.poff = FFB_DFB32_POFF,
.size = 0x1000000
},
{
.voff = FFB_FBC_KREGS_VOFF,
.poff = FFB_FBC_KREGS_POFF,
.size = 0x0002000
},
{
.voff = FFB_DAC_VOFF,
.poff = FFB_DAC_POFF,
.size = 0x0002000
},
{
.voff = FFB_PROM_VOFF,
.poff = FFB_PROM_POFF,
.size = 0x0010000
},
{
.voff = FFB_EXP_VOFF,
.poff = FFB_EXP_POFF,
.size = 0x0002000
},
{
.voff = FFB_DFB422A_VOFF,
.poff = FFB_DFB422A_POFF,
.size = 0x0800000
},
{
.voff = FFB_DFB422AD_VOFF,
.poff = FFB_DFB422AD_POFF,
.size = 0x0800000
},
{
.voff = FFB_DFB24B_VOFF,
.poff = FFB_DFB24B_POFF,
.size = 0x1000000
},
{
.voff = FFB_DFB422B_VOFF,
.poff = FFB_DFB422B_POFF,
.size = 0x0800000
},
{
.voff = FFB_DFB422BD_VOFF,
.poff = FFB_DFB422BD_POFF,
.size = 0x0800000
},
{
.voff = FFB_SFB16Z_VOFF,
.poff = FFB_SFB16Z_POFF,
.size = 0x0800000
},
{
.voff = FFB_SFB8Z_VOFF,
.poff = FFB_SFB8Z_POFF,
.size = 0x0800000
},
{
.voff = FFB_SFB422_VOFF,
.poff = FFB_SFB422_POFF,
.size = 0x0800000
},
{
.voff = FFB_SFB422D_VOFF,
.poff = FFB_SFB422D_POFF,
.size = 0x0800000
},
{ .size = 0 }
};
static int ffb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct ffb_par *par = (struct ffb_par *)info->par;
return sbusfb_mmap_helper(ffb_mmap_map,
par->physbase, par->fbsize,
0, vma);
}
static int ffb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
{
struct ffb_par *par = (struct ffb_par *) info->par;
return sbusfb_ioctl_helper(cmd, arg, info,
FBTYPE_CREATOR, 24, par->fbsize);
}
/*
* Initialisation
*/
static void
ffb_init_fix(struct fb_info *info)
{
struct ffb_par *par = (struct ffb_par *)info->par;
const char *ffb_type_name;
if (!(par->flags & FFB_FLAG_AFB)) {
if ((par->board_type & 0x7) == 0x3)
ffb_type_name = "Creator 3D";
else
ffb_type_name = "Creator";
} else
ffb_type_name = "Elite 3D";
strlcpy(info->fix.id, ffb_type_name, sizeof(info->fix.id));
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.visual = FB_VISUAL_TRUECOLOR;
/* Framebuffer length is the same regardless of resolution. */
info->fix.line_length = 8192;
info->fix.accel = FB_ACCEL_SUN_CREATOR;
}
struct all_info {
struct fb_info info;
struct ffb_par par;
u32 pseudo_palette[256];
};
static int ffb_init_one(struct of_device *op)
{
struct device_node *dp = op->node;
struct ffb_fbc __iomem *fbc;
struct ffb_dac __iomem *dac;
struct all_info *all;
int err;
u32 dac_pnum, dac_rev, dac_mrev;
all = kzalloc(sizeof(*all), GFP_KERNEL);
if (!all)
return -ENOMEM;
spin_lock_init(&all->par.lock);
all->par.fbc = of_ioremap(&op->resource[2], 0,
sizeof(struct ffb_fbc), "ffb fbc");
if (!all->par.fbc) {
kfree(all);
return -ENOMEM;
}
all->par.dac = of_ioremap(&op->resource[1], 0,
sizeof(struct ffb_dac), "ffb dac");
if (!all->par.dac) {
of_iounmap(&op->resource[2],
all->par.fbc, sizeof(struct ffb_fbc));
kfree(all);
return -ENOMEM;
}
all->par.rop_cache = FFB_ROP_NEW;
all->par.physbase = op->resource[0].start;
/* Don't mention copyarea, so SCROLL_REDRAW is always
* used. It is the fastest on this chip.
*/
all->info.flags = (FBINFO_DEFAULT |
/* FBINFO_HWACCEL_COPYAREA | */
FBINFO_HWACCEL_FILLRECT |
FBINFO_HWACCEL_IMAGEBLIT);
all->info.fbops = &ffb_ops;
all->info.screen_base = (char *) all->par.physbase + FFB_DFB24_POFF;
all->info.par = &all->par;
all->info.pseudo_palette = all->pseudo_palette;
sbusfb_fill_var(&all->info.var, dp->node, 32);
all->par.fbsize = PAGE_ALIGN(all->info.var.xres *
all->info.var.yres *
4);
ffb_fixup_var_rgb(&all->info.var);
all->info.var.accel_flags = FB_ACCELF_TEXT;
if (!strcmp(dp->name, "SUNW,afb"))
all->par.flags |= FFB_FLAG_AFB;
all->par.board_type = of_getintprop_default(dp, "board_type", 0);
fbc = all->par.fbc;
if ((upa_readl(&fbc->ucsr) & FFB_UCSR_ALL_ERRORS) != 0)
upa_writel(FFB_UCSR_ALL_ERRORS, &fbc->ucsr);
dac = all->par.dac;
upa_writel(FFB_DAC_DID, &dac->type);
dac_pnum = upa_readl(&dac->value);
dac_rev = (dac_pnum & FFB_DAC_DID_REV) >> FFB_DAC_DID_REV_SHIFT;
dac_pnum = (dac_pnum & FFB_DAC_DID_PNUM) >> FFB_DAC_DID_PNUM_SHIFT;
upa_writel(FFB_DAC_UCTRL, &dac->type);
dac_mrev = upa_readl(&dac->value);
dac_mrev = (dac_mrev & FFB_DAC_UCTRL_MANREV) >>
FFB_DAC_UCTRL_MANREV_SHIFT;
/* Elite3D has different DAC revision numbering, and no DAC revisions
* have the reversed meaning of cursor enable. Otherwise, Pacifica 1
* ramdacs with manufacturing revision less than 3 have inverted
* cursor logic. We identify Pacifica 1 as not Pacifica 2, the
* latter having a part number value of 0x236e.
*/
if ((all->par.flags & FFB_FLAG_AFB) || dac_pnum == 0x236e) {
all->par.flags &= ~FFB_FLAG_INVCURSOR;
} else {
if (dac_mrev < 3)
all->par.flags |= FFB_FLAG_INVCURSOR;
}
ffb_switch_from_graph(&all->par);
/* Unblank it just to be sure. When there are multiple
* FFB/AFB cards in the system, or it is not the OBP
* chosen console, it will have video outputs off in
* the DAC.
*/
ffb_blank(0, &all->info);
if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
printk(KERN_ERR "ffb: Could not allocate color map.\n");
of_iounmap(&op->resource[2],
all->par.fbc, sizeof(struct ffb_fbc));
of_iounmap(&op->resource[1],
all->par.dac, sizeof(struct ffb_dac));
kfree(all);
return -ENOMEM;
}
ffb_init_fix(&all->info);
err = register_framebuffer(&all->info);
if (err < 0) {
printk(KERN_ERR "ffb: Could not register framebuffer.\n");
fb_dealloc_cmap(&all->info.cmap);
of_iounmap(&op->resource[2],
all->par.fbc, sizeof(struct ffb_fbc));
of_iounmap(&op->resource[1],
all->par.dac, sizeof(struct ffb_dac));
kfree(all);
return err;
}
dev_set_drvdata(&op->dev, all);
printk("%s: %s at %016lx, type %d, "
"DAC pnum[%x] rev[%d] manuf_rev[%d]\n",
dp->full_name,
((all->par.flags & FFB_FLAG_AFB) ? "AFB" : "FFB"),
all->par.physbase, all->par.board_type,
dac_pnum, dac_rev, dac_mrev);
return 0;
}
static int __devinit ffb_probe(struct of_device *dev, const struct of_device_id *match)
{
struct of_device *op = to_of_device(&dev->dev);
return ffb_init_one(op);
}
static int __devexit ffb_remove(struct of_device *op)
{
struct all_info *all = dev_get_drvdata(&op->dev);
unregister_framebuffer(&all->info);
fb_dealloc_cmap(&all->info.cmap);
of_iounmap(&op->resource[2], all->par.fbc, sizeof(struct ffb_fbc));
of_iounmap(&op->resource[1], all->par.dac, sizeof(struct ffb_dac));
kfree(all);
dev_set_drvdata(&op->dev, NULL);
return 0;
}
static struct of_device_id ffb_match[] = {
{
.name = "SUNW,ffb",
},
{
.name = "SUNW,afb",
},
{},
};
MODULE_DEVICE_TABLE(of, ffb_match);
static struct of_platform_driver ffb_driver = {
.name = "ffb",
.match_table = ffb_match,
.probe = ffb_probe,
.remove = __devexit_p(ffb_remove),
};
int __init ffb_init(void)
{
if (fb_get_options("ffb", NULL))
return -ENODEV;
return of_register_driver(&ffb_driver, &of_bus_type);
}
void __exit ffb_exit(void)
{
of_unregister_driver(&ffb_driver);
}
module_init(ffb_init);
module_exit(ffb_exit);
MODULE_DESCRIPTION("framebuffer driver for Creator/Elite3D chipsets");
MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");
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