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/* $Id: cgsixfb.c,v 1.26 2001/10/16 05:44:44 davem Exp $
* cgsixfb.c: CGsix (GX,GXplus) frame buffer driver
*
* Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
* Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
*/
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/selection.h>
#include <video/sbusfb.h>
#include <asm/io.h>
/* Offset of interesting structures in the OBIO space */
/*
* Brooktree is the video dac and is funny to program on the cg6.
* (it's even funnier on the cg3)
* The FBC could be the frame buffer control
* The FHC could is the frame buffer hardware control.
*/
#define CG6_ROM_OFFSET 0x0UL
#define CG6_BROOKTREE_OFFSET 0x200000UL
#define CG6_DHC_OFFSET 0x240000UL
#define CG6_ALT_OFFSET 0x280000UL
#define CG6_FHC_OFFSET 0x300000UL
#define CG6_THC_OFFSET 0x301000UL
#define CG6_FBC_OFFSET 0x700000UL
#define CG6_TEC_OFFSET 0x701000UL
#define CG6_RAM_OFFSET 0x800000UL
/* FHC definitions */
#define CG6_FHC_FBID_SHIFT 24
#define CG6_FHC_FBID_MASK 255
#define CG6_FHC_REV_SHIFT 20
#define CG6_FHC_REV_MASK 15
#define CG6_FHC_FROP_DISABLE (1 << 19)
#define CG6_FHC_ROW_DISABLE (1 << 18)
#define CG6_FHC_SRC_DISABLE (1 << 17)
#define CG6_FHC_DST_DISABLE (1 << 16)
#define CG6_FHC_RESET (1 << 15)
#define CG6_FHC_LITTLE_ENDIAN (1 << 13)
#define CG6_FHC_RES_MASK (3 << 11)
#define CG6_FHC_1024 (0 << 11)
#define CG6_FHC_1152 (1 << 11)
#define CG6_FHC_1280 (2 << 11)
#define CG6_FHC_1600 (3 << 11)
#define CG6_FHC_CPU_MASK (3 << 9)
#define CG6_FHC_CPU_SPARC (0 << 9)
#define CG6_FHC_CPU_68020 (1 << 9)
#define CG6_FHC_CPU_386 (2 << 9)
#define CG6_FHC_TEST (1 << 8)
#define CG6_FHC_TEST_X_SHIFT 4
#define CG6_FHC_TEST_X_MASK 15
#define CG6_FHC_TEST_Y_SHIFT 0
#define CG6_FHC_TEST_Y_MASK 15
/* FBC mode definitions */
#define CG6_FBC_BLIT_IGNORE 0x00000000
#define CG6_FBC_BLIT_NOSRC 0x00100000
#define CG6_FBC_BLIT_SRC 0x00200000
#define CG6_FBC_BLIT_ILLEGAL 0x00300000
#define CG6_FBC_BLIT_MASK 0x00300000
#define CG6_FBC_VBLANK 0x00080000
#define CG6_FBC_MODE_IGNORE 0x00000000
#define CG6_FBC_MODE_COLOR8 0x00020000
#define CG6_FBC_MODE_COLOR1 0x00040000
#define CG6_FBC_MODE_HRMONO 0x00060000
#define CG6_FBC_MODE_MASK 0x00060000
#define CG6_FBC_DRAW_IGNORE 0x00000000
#define CG6_FBC_DRAW_RENDER 0x00008000
#define CG6_FBC_DRAW_PICK 0x00010000
#define CG6_FBC_DRAW_ILLEGAL 0x00018000
#define CG6_FBC_DRAW_MASK 0x00018000
#define CG6_FBC_BWRITE0_IGNORE 0x00000000
#define CG6_FBC_BWRITE0_ENABLE 0x00002000
#define CG6_FBC_BWRITE0_DISABLE 0x00004000
#define CG6_FBC_BWRITE0_ILLEGAL 0x00006000
#define CG6_FBC_BWRITE0_MASK 0x00006000
#define CG6_FBC_BWRITE1_IGNORE 0x00000000
#define CG6_FBC_BWRITE1_ENABLE 0x00000800
#define CG6_FBC_BWRITE1_DISABLE 0x00001000
#define CG6_FBC_BWRITE1_ILLEGAL 0x00001800
#define CG6_FBC_BWRITE1_MASK 0x00001800
#define CG6_FBC_BREAD_IGNORE 0x00000000
#define CG6_FBC_BREAD_0 0x00000200
#define CG6_FBC_BREAD_1 0x00000400
#define CG6_FBC_BREAD_ILLEGAL 0x00000600
#define CG6_FBC_BREAD_MASK 0x00000600
#define CG6_FBC_BDISP_IGNORE 0x00000000
#define CG6_FBC_BDISP_0 0x00000080
#define CG6_FBC_BDISP_1 0x00000100
#define CG6_FBC_BDISP_ILLEGAL 0x00000180
#define CG6_FBC_BDISP_MASK 0x00000180
#define CG6_FBC_INDEX_MOD 0x00000040
#define CG6_FBC_INDEX_MASK 0x00000030
/* THC definitions */
#define CG6_THC_MISC_REV_SHIFT 16
#define CG6_THC_MISC_REV_MASK 15
#define CG6_THC_MISC_RESET (1 << 12)
#define CG6_THC_MISC_VIDEO (1 << 10)
#define CG6_THC_MISC_SYNC (1 << 9)
#define CG6_THC_MISC_VSYNC (1 << 8)
#define CG6_THC_MISC_SYNC_ENAB (1 << 7)
#define CG6_THC_MISC_CURS_RES (1 << 6)
#define CG6_THC_MISC_INT_ENAB (1 << 5)
#define CG6_THC_MISC_INT (1 << 4)
#define CG6_THC_MISC_INIT 0x9f
MODULE_LICENSE("GPL");
/* The contents are unknown */
struct cg6_tec {
volatile int tec_matrix;
volatile int tec_clip;
volatile int tec_vdc;
};
struct cg6_thc {
uint thc_pad0[512];
volatile uint thc_hs; /* hsync timing */
volatile uint thc_hsdvs;
volatile uint thc_hd;
volatile uint thc_vs; /* vsync timing */
volatile uint thc_vd;
volatile uint thc_refresh;
volatile uint thc_misc;
uint thc_pad1[56];
volatile uint thc_cursxy; /* cursor x,y position (16 bits each) */
volatile uint thc_cursmask[32]; /* cursor mask bits */
volatile uint thc_cursbits[32]; /* what to show where mask enabled */
};
struct cg6_fbc {
u32 xxx0[1];
volatile u32 mode;
volatile u32 clip;
u32 xxx1[1];
volatile u32 s;
volatile u32 draw;
volatile u32 blit;
volatile u32 font;
u32 xxx2[24];
volatile u32 x0, y0, z0, color0;
volatile u32 x1, y1, z1, color1;
volatile u32 x2, y2, z2, color2;
volatile u32 x3, y3, z3, color3;
volatile u32 offx, offy;
u32 xxx3[2];
volatile u32 incx, incy;
u32 xxx4[2];
volatile u32 clipminx, clipminy;
u32 xxx5[2];
volatile u32 clipmaxx, clipmaxy;
u32 xxx6[2];
volatile u32 fg;
volatile u32 bg;
volatile u32 alu;
volatile u32 pm;
volatile u32 pixelm;
u32 xxx7[2];
volatile u32 patalign;
volatile u32 pattern[8];
u32 xxx8[432];
volatile u32 apointx, apointy, apointz;
u32 xxx9[1];
volatile u32 rpointx, rpointy, rpointz;
u32 xxx10[5];
volatile u32 pointr, pointg, pointb, pointa;
volatile u32 alinex, aliney, alinez;
u32 xxx11[1];
volatile u32 rlinex, rliney, rlinez;
u32 xxx12[5];
volatile u32 liner, lineg, lineb, linea;
volatile u32 atrix, atriy, atriz;
u32 xxx13[1];
volatile u32 rtrix, rtriy, rtriz;
u32 xxx14[5];
volatile u32 trir, trig, trib, tria;
volatile u32 aquadx, aquady, aquadz;
u32 xxx15[1];
volatile u32 rquadx, rquady, rquadz;
u32 xxx16[5];
volatile u32 quadr, quadg, quadb, quada;
volatile u32 arectx, arecty, arectz;
u32 xxx17[1];
volatile u32 rrectx, rrecty, rrectz;
u32 xxx18[5];
volatile u32 rectr, rectg, rectb, recta;
};
static struct sbus_mmap_map cg6_mmap_map[] = {
{ CG6_FBC, CG6_FBC_OFFSET, PAGE_SIZE },
{ CG6_TEC, CG6_TEC_OFFSET, PAGE_SIZE },
{ CG6_BTREGS, CG6_BROOKTREE_OFFSET, PAGE_SIZE },
{ CG6_FHC, CG6_FHC_OFFSET, PAGE_SIZE },
{ CG6_THC, CG6_THC_OFFSET, PAGE_SIZE },
{ CG6_ROM, CG6_ROM_OFFSET, 0x10000 },
{ CG6_RAM, CG6_RAM_OFFSET, SBUS_MMAP_FBSIZE(1) },
{ CG6_DHC, CG6_DHC_OFFSET, 0x40000 },
{ 0, 0, 0 }
};
static void cg6_setup(struct display *p)
{
p->next_line = sbusfbinfo(p->fb_info)->var.xres_virtual;
p->next_plane = 0;
}
static void cg6_clear(struct vc_data *conp, struct display *p, int sy, int sx,
int height, int width)
{
struct fb_info_sbusfb *fb = (struct fb_info_sbusfb *)p->fb_info;
register struct cg6_fbc *fbc = fb->s.cg6.fbc;
unsigned long flags;
int x, y, w, h;
int i;
spin_lock_irqsave(&fb->lock, flags);
do {
i = sbus_readl(&fbc->s);
} while (i & 0x10000000);
sbus_writel(attr_bgcol_ec(p,conp), &fbc->fg);
sbus_writel(attr_bgcol_ec(p,conp), &fbc->bg);
sbus_writel(~0, &fbc->pixelm);
sbus_writel(0xea80ff00, &fbc->alu);
sbus_writel(0, &fbc->s);
sbus_writel(0, &fbc->clip);
sbus_writel(~0, &fbc->pm);
if (fontheightlog(p)) {
y = sy << fontheightlog(p); h = height << fontheightlog(p);
} else {
y = sy * fontheight(p); h = height * fontheight(p);
}
if (fontwidthlog(p)) {
x = sx << fontwidthlog(p); w = width << fontwidthlog(p);
} else {
x = sx * fontwidth(p); w = width * fontwidth(p);
}
sbus_writel(y + fb->y_margin, &fbc->arecty);
sbus_writel(x + fb->x_margin, &fbc->arectx);
sbus_writel(y + fb->y_margin + h, &fbc->arecty);
sbus_writel(x + fb->x_margin + w, &fbc->arectx);
do {
i = sbus_readl(&fbc->draw);
} while (i < 0 && (i & 0x20000000));
spin_unlock_irqrestore(&fb->lock, flags);
}
static void cg6_fill(struct fb_info_sbusfb *fb, struct display *p, int s,
int count, unsigned short *boxes)
{
int i;
register struct cg6_fbc *fbc = fb->s.cg6.fbc;
unsigned long flags;
spin_lock_irqsave(&fb->lock, flags);
do {
i = sbus_readl(&fbc->s);
} while (i & 0x10000000);
sbus_writel(attr_bgcol(p,s), &fbc->fg);
sbus_writel(attr_bgcol(p,s), &fbc->bg);
sbus_writel(~0, &fbc->pixelm);
sbus_writel(0xea80ff00, &fbc->alu);
sbus_writel(0, &fbc->s);
sbus_writel(0, &fbc->clip);
sbus_writel(~0, &fbc->pm);
while (count-- > 0) {
sbus_writel(boxes[1], &fbc->arecty);
sbus_writel(boxes[0], &fbc->arectx);
sbus_writel(boxes[3], &fbc->arecty);
sbus_writel(boxes[2], &fbc->arectx);
boxes += 4;
do {
i = sbus_readl(&fbc->draw);
} while (i < 0 && (i & 0x20000000));
}
spin_unlock_irqrestore(&fb->lock, flags);
}
static void cg6_putc(struct vc_data *conp, struct display *p, int c, int yy, int xx)
{
struct fb_info_sbusfb *fb = (struct fb_info_sbusfb *)p->fb_info;
register struct cg6_fbc *fbc = fb->s.cg6.fbc;
unsigned long flags;
int i, x, y;
u8 *fd;
spin_lock_irqsave(&fb->lock, flags);
if (fontheightlog(p)) {
y = fb->y_margin + (yy << fontheightlog(p));
i = ((c & p->charmask) << fontheightlog(p));
} else {
y = fb->y_margin + (yy * fontheight(p));
i = (c & p->charmask) * fontheight(p);
}
if (fontwidth(p) <= 8)
fd = p->fontdata + i;
else
fd = p->fontdata + (i << 1);
if (fontwidthlog(p))
x = fb->x_margin + (xx << fontwidthlog(p));
else
x = fb->x_margin + (xx * fontwidth(p));
do {
i = sbus_readl(&fbc->s);
} while (i & 0x10000000);
sbus_writel(attr_fgcol(p,c), &fbc->fg);
sbus_writel(attr_bgcol(p,c), &fbc->bg);
sbus_writel(0x140000, &fbc->mode);
sbus_writel(0xe880fc30, &fbc->alu);
sbus_writel(~0, &fbc->pixelm);
sbus_writel(0, &fbc->s);
sbus_writel(0, &fbc->clip);
sbus_writel(0xff, &fbc->pm);
sbus_writel(0, &fbc->incx);
sbus_writel(1, &fbc->incy);
sbus_writel(x, &fbc->x0);
sbus_writel(x + fontwidth(p) - 1, &fbc->x1);
sbus_writel(y, &fbc->y0);
if (fontwidth(p) <= 8) {
for (i = 0; i < fontheight(p); i++) {
u32 val = *fd++ << 24;
sbus_writel(val, &fbc->font);
}
} else {
for (i = 0; i < fontheight(p); i++) {
u32 val = *(u16 *)fd << 16;
sbus_writel(val, &fbc->font);
fd += 2;
}
}
spin_unlock_irqrestore(&fb->lock, flags);
}
static void cg6_putcs(struct vc_data *conp, struct display *p, const unsigned short *s,
int count, int yy, int xx)
{
struct fb_info_sbusfb *fb = (struct fb_info_sbusfb *)p->fb_info;
register struct cg6_fbc *fbc = fb->s.cg6.fbc;
unsigned long flags;
int i, x, y;
u8 *fd1, *fd2, *fd3, *fd4;
u16 c;
spin_lock_irqsave(&fb->lock, flags);
do {
i = sbus_readl(&fbc->s);
} while (i & 0x10000000);
c = scr_readw(s);
sbus_writel(attr_fgcol(p, c), &fbc->fg);
sbus_writel(attr_bgcol(p, c), &fbc->bg);
sbus_writel(0x140000, &fbc->mode);
sbus_writel(0xe880fc30, &fbc->alu);
sbus_writel(~0, &fbc->pixelm);
sbus_writel(0, &fbc->s);
sbus_writel(0, &fbc->clip);
sbus_writel(0xff, &fbc->pm);
x = fb->x_margin;
y = fb->y_margin;
if (fontwidthlog(p))
x += (xx << fontwidthlog(p));
else
x += xx * fontwidth(p);
if (fontheightlog(p))
y += (yy << fontheightlog(p));
else
y += (yy * fontheight(p));
if (fontwidth(p) <= 8) {
while (count >= 4) {
count -= 4;
sbus_writel(0, &fbc->incx);
sbus_writel(1, &fbc->incy);
sbus_writel(x, &fbc->x0);
sbus_writel((x += 4 * fontwidth(p)) - 1, &fbc->x1);
sbus_writel(y, &fbc->y0);
if (fontheightlog(p)) {
fd1 = p->fontdata + ((scr_readw(s++) & p->charmask) << fontheightlog(p));
fd2 = p->fontdata + ((scr_readw(s++) & p->charmask) << fontheightlog(p));
fd3 = p->fontdata + ((scr_readw(s++) & p->charmask) << fontheightlog(p));
fd4 = p->fontdata + ((scr_readw(s++) & p->charmask) << fontheightlog(p));
} else {
fd1 = p->fontdata + ((scr_readw(s++) & p->charmask) * fontheight(p));
fd2 = p->fontdata + ((scr_readw(s++) & p->charmask) * fontheight(p));
fd3 = p->fontdata + ((scr_readw(s++) & p->charmask) * fontheight(p));
fd4 = p->fontdata + ((scr_readw(s++) & p->charmask) * fontheight(p));
}
if (fontwidth(p) == 8) {
for (i = 0; i < fontheight(p); i++) {
u32 val = ((u32)*fd4++) |
((((u32)*fd3++) |
((((u32)*fd2++) |
(((u32)*fd1++)
<< 8)) << 8)) << 8);
sbus_writel(val, &fbc->font);
}
} else {
for (i = 0; i < fontheight(p); i++) {
u32 val = (((u32)*fd4++) |
((((u32)*fd3++) |
((((u32)*fd2++) |
(((u32)*fd1++)
<< fontwidth(p))) <<
fontwidth(p))) <<
fontwidth(p))) <<
(24 - 3 * fontwidth(p));
sbus_writel(val, &fbc->font);
}
}
}
} else {
while (count >= 2) {
count -= 2;
sbus_writel(0, &fbc->incx);
sbus_writel(1, &fbc->incy);
sbus_writel(x, &fbc->x0);
sbus_writel((x += 2 * fontwidth(p)) - 1, &fbc->x1);
sbus_writel(y, &fbc->y0);
if (fontheightlog(p)) {
fd1 = p->fontdata + ((scr_readw(s++) & p->charmask) << (fontheightlog(p) + 1));
fd2 = p->fontdata + ((scr_readw(s++) & p->charmask) << (fontheightlog(p) + 1));
} else {
fd1 = p->fontdata + (((scr_readw(s++) & p->charmask) * fontheight(p)) << 1);
fd2 = p->fontdata + (((scr_readw(s++) & p->charmask) * fontheight(p)) << 1);
}
for (i = 0; i < fontheight(p); i++) {
u32 val = ((((u32)*(u16 *)fd1) << fontwidth(p)) |
((u32)*(u16 *)fd2)) << (16 - fontwidth(p));
sbus_writel(val, &fbc->font);
fd1 += 2; fd2 += 2;
}
}
}
while (count) {
count--;
sbus_writel(0, &fbc->incx);
sbus_writel(1, &fbc->incy);
sbus_writel(x, &fbc->x0);
sbus_writel((x += fontwidth(p)) - 1, &fbc->x1);
sbus_writel(y, &fbc->y0);
if (fontheightlog(p))
i = ((scr_readw(s++) & p->charmask) << fontheightlog(p));
else
i = ((scr_readw(s++) & p->charmask) * fontheight(p));
if (fontwidth(p) <= 8) {
fd1 = p->fontdata + i;
for (i = 0; i < fontheight(p); i++) {
u32 val = *fd1++ << 24;
sbus_writel(val, &fbc->font);
}
} else {
fd1 = p->fontdata + (i << 1);
for (i = 0; i < fontheight(p); i++) {
u32 val = *(u16 *)fd1 << 16;
sbus_writel(val, &fbc->font);
fd1 += 2;
}
}
}
spin_unlock_irqrestore(&fb->lock, flags);
}
static void cg6_revc(struct display *p, int xx, int yy)
{
/* Not used if hw cursor */
}
static void cg6_loadcmap (struct fb_info_sbusfb *fb, struct display *p, int index, int count)
{
struct bt_regs *bt = fb->s.cg6.bt;
unsigned long flags;
int i;
spin_lock_irqsave(&fb->lock, flags);
sbus_writel(index << 24, &bt->addr);
for (i = index; count--; i++){
sbus_writel(fb->color_map CM(i,0) << 24,
&bt->color_map);
sbus_writel(fb->color_map CM(i,1) << 24,
&bt->color_map);
sbus_writel(fb->color_map CM(i,2) << 24,
&bt->color_map);
}
spin_unlock_irqrestore(&fb->lock, flags);
}
static void cg6_restore_palette (struct fb_info_sbusfb *fb)
{
struct bt_regs *bt = fb->s.cg6.bt;
unsigned long flags;
spin_lock_irqsave(&fb->lock, flags);
sbus_writel(0, &bt->addr);
sbus_writel(0xffffffff, &bt->color_map);
sbus_writel(0xffffffff, &bt->color_map);
sbus_writel(0xffffffff, &bt->color_map);
spin_unlock_irqrestore(&fb->lock, flags);
}
static struct display_switch cg6_dispsw __initdata = {
setup: cg6_setup,
bmove: fbcon_redraw_bmove,
clear: cg6_clear,
putc: cg6_putc,
putcs: cg6_putcs,
revc: cg6_revc,
fontwidthmask: FONTWIDTHRANGE(1,16) /* Allow fontwidths up to 16 */
};
static void cg6_setcursormap (struct fb_info_sbusfb *fb, u8 *red, u8 *green, u8 *blue)
{
struct bt_regs *bt = fb->s.cg6.bt;
unsigned long flags;
spin_lock_irqsave(&fb->lock, flags);
sbus_writel(1 << 24, &bt->addr);
sbus_writel(red[0] << 24, &bt->cursor);
sbus_writel(green[0] << 24, &bt->cursor);
sbus_writel(blue[0] << 24, &bt->cursor);
sbus_writel(3 << 24, &bt->addr);
sbus_writel(red[1] << 24, &bt->cursor);
sbus_writel(green[1] << 24, &bt->cursor);
sbus_writel(blue[1] << 24, &bt->cursor);
spin_unlock_irqrestore(&fb->lock, flags);
}
/* Set cursor shape */
static void cg6_setcurshape (struct fb_info_sbusfb *fb)
{
struct cg6_thc *thc = fb->s.cg6.thc;
unsigned long flags;
int i;
spin_lock_irqsave(&fb->lock, flags);
for (i = 0; i < 32; i++) {
sbus_writel(fb->cursor.bits[0][i],
&thc->thc_cursmask [i]);
sbus_writel(fb->cursor.bits[1][i],
&thc->thc_cursbits [i]);
}
spin_unlock_irqrestore(&fb->lock, flags);
}
/* Load cursor information */
static void cg6_setcursor (struct fb_info_sbusfb *fb)
{
unsigned int v;
unsigned long flags;
struct cg_cursor *c = &fb->cursor;
spin_lock_irqsave(&fb->lock, flags);
if (c->enable)
v = ((c->cpos.fbx - c->chot.fbx) << 16)
|((c->cpos.fby - c->chot.fby) & 0xffff);
else
/* Magic constant to turn off the cursor */
v = ((65536-32) << 16) | (65536-32);
sbus_writel(v, &fb->s.cg6.thc->thc_cursxy);
spin_unlock_irqrestore(&fb->lock, flags);
}
static void cg6_blank (struct fb_info_sbusfb *fb)
{
unsigned long flags;
u32 tmp;
spin_lock_irqsave(&fb->lock, flags);
tmp = sbus_readl(&fb->s.cg6.thc->thc_misc);
tmp &= ~CG6_THC_MISC_VIDEO;
sbus_writel(tmp, &fb->s.cg6.thc->thc_misc);
spin_unlock_irqrestore(&fb->lock, flags);
}
static void cg6_unblank (struct fb_info_sbusfb *fb)
{
unsigned long flags;
u32 tmp;
spin_lock_irqsave(&fb->lock, flags);
tmp = sbus_readl(&fb->s.cg6.thc->thc_misc);
tmp |= CG6_THC_MISC_VIDEO;
sbus_writel(tmp, &fb->s.cg6.thc->thc_misc);
spin_unlock_irqrestore(&fb->lock, flags);
}
static void cg6_reset (struct fb_info_sbusfb *fb)
{
unsigned int rev, conf;
struct cg6_tec *tec = fb->s.cg6.tec;
struct cg6_fbc *fbc = fb->s.cg6.fbc;
unsigned long flags;
u32 mode, tmp;
int i;
spin_lock_irqsave(&fb->lock, flags);
/* Turn off stuff in the Transform Engine. */
sbus_writel(0, &tec->tec_matrix);
sbus_writel(0, &tec->tec_clip);
sbus_writel(0, &tec->tec_vdc);
/* Take care of bugs in old revisions. */
rev = (sbus_readl(fb->s.cg6.fhc) >> CG6_FHC_REV_SHIFT) & CG6_FHC_REV_MASK;
if (rev < 5) {
conf = (sbus_readl(fb->s.cg6.fhc) & CG6_FHC_RES_MASK) |
CG6_FHC_CPU_68020 | CG6_FHC_TEST |
(11 << CG6_FHC_TEST_X_SHIFT) |
(11 << CG6_FHC_TEST_Y_SHIFT);
if (rev < 2)
conf |= CG6_FHC_DST_DISABLE;
sbus_writel(conf, fb->s.cg6.fhc);
}
/* Set things in the FBC. Bad things appear to happen if we do
* back to back store/loads on the mode register, so copy it
* out instead. */
mode = sbus_readl(&fbc->mode);
do {
i = sbus_readl(&fbc->s);
} while (i & 0x10000000);
mode &= ~(CG6_FBC_BLIT_MASK | CG6_FBC_MODE_MASK |
CG6_FBC_DRAW_MASK | CG6_FBC_BWRITE0_MASK |
CG6_FBC_BWRITE1_MASK | CG6_FBC_BREAD_MASK |
CG6_FBC_BDISP_MASK);
mode |= (CG6_FBC_BLIT_SRC | CG6_FBC_MODE_COLOR8 |
CG6_FBC_DRAW_RENDER | CG6_FBC_BWRITE0_ENABLE |
CG6_FBC_BWRITE1_DISABLE | CG6_FBC_BREAD_0 |
CG6_FBC_BDISP_0);
sbus_writel(mode, &fbc->mode);
sbus_writel(0, &fbc->clip);
sbus_writel(0, &fbc->offx);
sbus_writel(0, &fbc->offy);
sbus_writel(0, &fbc->clipminx);
sbus_writel(0, &fbc->clipminy);
sbus_writel(fb->type.fb_width - 1, &fbc->clipmaxx);
sbus_writel(fb->type.fb_height - 1, &fbc->clipmaxy);
/* Enable cursor in Brooktree DAC. */
sbus_writel(0x06 << 24, &fb->s.cg6.bt->addr);
tmp = sbus_readl(&fb->s.cg6.bt->control);
tmp |= 0x03 << 24;
sbus_writel(tmp, &fb->s.cg6.bt->control);
spin_unlock_irqrestore(&fb->lock, flags);
}
static void cg6_margins (struct fb_info_sbusfb *fb, struct display *p, int x_margin, int y_margin)
{
p->screen_base += (y_margin - fb->y_margin) *
p->line_length + (x_margin - fb->x_margin);
}
static int __init cg6_rasterimg (struct fb_info *info, int start)
{
struct fb_info_sbusfb *fb = sbusfbinfo(info);
register struct cg6_fbc *fbc = fb->s.cg6.fbc;
int i;
do {
i = sbus_readl(&fbc->s);
} while (i & 0x10000000);
return 0;
}
static char idstring[70] __initdata = { 0 };
char __init *cgsixfb_init(struct fb_info_sbusfb *fb)
{
struct fb_fix_screeninfo *fix = &fb->fix;
struct fb_var_screeninfo *var = &fb->var;
struct display *disp = &fb->disp;
struct fbtype *type = &fb->type;
struct sbus_dev *sdev = fb->sbdp;
unsigned long phys = sdev->reg_addrs[0].phys_addr;
u32 conf;
char *p;
char *cardtype;
struct bt_regs *bt;
struct fb_ops *fbops;
fbops = kmalloc(sizeof(*fbops), GFP_KERNEL);
if (fbops == NULL)
return NULL;
*fbops = *fb->info.fbops;
fbops->fb_rasterimg = cg6_rasterimg;
fb->info.fbops = fbops;
if (prom_getbool (fb->prom_node, "dblbuf")) {
type->fb_size *= 4;
fix->smem_len *= 4;
}
fix->line_length = fb->var.xres_virtual;
fix->accel = FB_ACCEL_SUN_CGSIX;
var->accel_flags = FB_ACCELF_TEXT;
disp->scrollmode = SCROLL_YREDRAW;
if (!disp->screen_base) {
disp->screen_base = (char *)
sbus_ioremap(&sdev->resource[0], CG6_RAM_OFFSET,
type->fb_size, "cgsix ram");
}
disp->screen_base += fix->line_length * fb->y_margin + fb->x_margin;
fb->s.cg6.fbc = (struct cg6_fbc *)
sbus_ioremap(&sdev->resource[0], CG6_FBC_OFFSET,
4096, "cgsix fbc");
fb->s.cg6.tec = (struct cg6_tec *)
sbus_ioremap(&sdev->resource[0], CG6_TEC_OFFSET,
sizeof(struct cg6_tec), "cgsix tec");
fb->s.cg6.thc = (struct cg6_thc *)
sbus_ioremap(&sdev->resource[0], CG6_THC_OFFSET,
sizeof(struct cg6_thc), "cgsix thc");
fb->s.cg6.bt = bt = (struct bt_regs *)
sbus_ioremap(&sdev->resource[0], CG6_BROOKTREE_OFFSET,
sizeof(struct bt_regs), "cgsix dac");
fb->s.cg6.fhc = (u32 *)
sbus_ioremap(&sdev->resource[0], CG6_FHC_OFFSET,
sizeof(u32), "cgsix fhc");
#if 0
prom_printf("CG6: RES[%016lx:%016lx:%016lx]\n",
sdev->resource[0].start,
sdev->resource[0].end,
sdev->resource[0].flags);
prom_printf("CG6: fbc(%p) tec(%p) thc(%p) bt(%p) fhc(%p)\n",
fb->s.cg6.fbc,
fb->s.cg6.tec,
fb->s.cg6.thc,
fb->s.cg6.bt,
fb->s.cg6.fhc);
prom_halt();
#endif
fb->dispsw = cg6_dispsw;
fb->margins = cg6_margins;
fb->loadcmap = cg6_loadcmap;
fb->setcursor = cg6_setcursor;
fb->setcursormap = cg6_setcursormap;
fb->setcurshape = cg6_setcurshape;
fb->restore_palette = cg6_restore_palette;
fb->fill = cg6_fill;
fb->blank = cg6_blank;
fb->unblank = cg6_unblank;
fb->reset = cg6_reset;
fb->physbase = phys;
fb->mmap_map = cg6_mmap_map;
/* Initialize Brooktree DAC */
sbus_writel(0x04 << 24, &bt->addr); /* color planes */
sbus_writel(0xff << 24, &bt->control);
sbus_writel(0x05 << 24, &bt->addr);
sbus_writel(0x00 << 24, &bt->control);
sbus_writel(0x06 << 24, &bt->addr); /* overlay plane */
sbus_writel(0x73 << 24, &bt->control);
sbus_writel(0x07 << 24, &bt->addr);
sbus_writel(0x00 << 24, &bt->control);
conf = sbus_readl(fb->s.cg6.fhc);
switch(conf & CG6_FHC_CPU_MASK) {
case CG6_FHC_CPU_SPARC: p = "sparc"; break;
case CG6_FHC_CPU_68020: p = "68020"; break;
default: p = "i386"; break;
}
if (((conf >> CG6_FHC_REV_SHIFT) & CG6_FHC_REV_MASK) >= 11) {
if (fix->smem_len <= 0x100000) {
cardtype = "TGX";
} else {
cardtype = "TGX+";
}
} else {
if (fix->smem_len <= 0x100000) {
cardtype = "GX";
} else {
cardtype = "GX+";
}
}
sprintf(idstring,
#ifdef __sparc_v9__
"cgsix at %016lx TEC Rev %x CPU %s Rev %x [%s]", phys,
#else
"cgsix at %x.%08lx TEC Rev %x CPU %s Rev %x [%s]",
fb->iospace, phys,
#endif
((sbus_readl(&fb->s.cg6.thc->thc_misc) >> CG6_THC_MISC_REV_SHIFT) &
CG6_THC_MISC_REV_MASK),
p, (conf >> CG6_FHC_REV_SHIFT) & CG6_FHC_REV_MASK, cardtype);
sprintf(fb->info.modename, "CGsix [%s]", cardtype);
sprintf(fix->id, "CGsix [%s]", cardtype);
cg6_reset(fb);
return idstring;
}
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