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#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/delay.h>
#include <linux/interrupt.h>
#include <asm/setup.h>
#include <asm/segment.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>
#include <asm/apollohw.h>
#include <linux/fb.h>
#include <linux/module.h>
#include "dn_accel.h"
#include <video/fbcon.h>
#include <video/fbcon-mfb.h>
/* apollo video HW definitions */
/*
* Control Registers. IOBASE + $x
*
* Note: these are the Memory/IO BASE definitions for a mono card set to the
* alternate address
*
* Control 3A and 3B serve identical functions except that 3A
* deals with control 1 and 3b deals with Color LUT reg.
*/
#define AP_IOBASE 0x3b0 /* Base address of 1 plane board. */
#define AP_STATUS isaIO2mem(AP_IOBASE+0) /* Status register. Read */
#define AP_WRITE_ENABLE isaIO2mem(AP_IOBASE+0) /* Write Enable Register Write */
#define AP_DEVICE_ID isaIO2mem(AP_IOBASE+1) /* Device ID Register. Read */
#define AP_ROP_1 isaIO2mem(AP_IOBASE+2) /* Raster Operation reg. Write Word */
#define AP_DIAG_MEM_REQ isaIO2mem(AP_IOBASE+4) /* Diagnostic Memory Request. Write Word */
#define AP_CONTROL_0 isaIO2mem(AP_IOBASE+8) /* Control Register 0. Read/Write */
#define AP_CONTROL_1 isaIO2mem(AP_IOBASE+0xa) /* Control Register 1. Read/Write */
#define AP_CONTROL_3A isaIO2mem(AP_IOBASE+0xe) /* Control Register 3a. Read/Write */
#define AP_CONTROL_2 isaIO2mem(AP_IOBASE+0xc) /* Control Register 2. Read/Write */
#define FRAME_BUFFER_START 0x0FA0000
#define FRAME_BUFFER_LEN 0x40000
/* CREG 0 */
#define VECTOR_MODE 0x40 /* 010x.xxxx */
#define DBLT_MODE 0x80 /* 100x.xxxx */
#define NORMAL_MODE 0xE0 /* 111x.xxxx */
#define SHIFT_BITS 0x1F /* xxx1.1111 */
/* other bits are Shift value */
/* CREG 1 */
#define AD_BLT 0x80 /* 1xxx.xxxx */
#define NORMAL 0x80 /* 1xxx.xxxx */ /* What is happening here ?? */
#define INVERSE 0x00 /* 0xxx.xxxx */ /* Clearing this reverses the screen */
#define PIX_BLT 0x00 /* 0xxx.xxxx */
#define AD_HIBIT 0x40 /* xIxx.xxxx */
#define ROP_EN 0x10 /* xxx1.xxxx */
#define DST_EQ_SRC 0x00 /* xxx0.xxxx */
#define nRESET_SYNC 0x08 /* xxxx.1xxx */
#define SYNC_ENAB 0x02 /* xxxx.xx1x */
#define BLANK_DISP 0x00 /* xxxx.xxx0 */
#define ENAB_DISP 0x01 /* xxxx.xxx1 */
#define NORM_CREG1 (nRESET_SYNC | SYNC_ENAB | ENAB_DISP) /* no reset sync */
/* CREG 2 */
/*
* Following 3 defines are common to 1, 4 and 8 plane.
*/
#define S_DATA_1s 0x00 /* 00xx.xxxx */ /* set source to all 1's -- vector drawing */
#define S_DATA_PIX 0x40 /* 01xx.xxxx */ /* takes source from ls-bits and replicates over 16 bits */
#define S_DATA_PLN 0xC0 /* 11xx.xxxx */ /* normal, each data access =16-bits in
one plane of image mem */
/* CREG 3A/CREG 3B */
# define RESET_CREG 0x80 /* 1000.0000 */
/* ROP REG - all one nibble */
/* ********* NOTE : this is used r0,r1,r2,r3 *********** */
#define ROP(r2,r3,r0,r1) ( (U_SHORT)((r0)|((r1)<<4)|((r2)<<8)|((r3)<<12)) )
#define DEST_ZERO 0x0
#define SRC_AND_DEST 0x1
#define SRC_AND_nDEST 0x2
#define SRC 0x3
#define nSRC_AND_DEST 0x4
#define DEST 0x5
#define SRC_XOR_DEST 0x6
#define SRC_OR_DEST 0x7
#define SRC_NOR_DEST 0x8
#define SRC_XNOR_DEST 0x9
#define nDEST 0xA
#define SRC_OR_nDEST 0xB
#define nSRC 0xC
#define nSRC_OR_DEST 0xD
#define SRC_NAND_DEST 0xE
#define DEST_ONE 0xF
#define SWAP(A) ((A>>8) | ((A&0xff) <<8))
#if 0
#define outb(a,d) *(char *)(a)=(d)
#define outw(a,d) *(unsigned short *)a=d
#endif
/* frame buffer operations */
static int dn_fb_get_fix(struct fb_fix_screeninfo *fix, int con,
struct fb_info *info);
static int dn_fb_get_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int dn_fb_set_var(struct fb_var_screeninfo *var, int isactive,
struct fb_info *info);
static int dn_fb_get_cmap(struct fb_cmap *cmap,int kspc,int con,
struct fb_info *info);
static int dn_fb_set_cmap(struct fb_cmap *cmap,int kspc,int con,
struct fb_info *info);
static int dnfbcon_switch(int con,struct fb_info *info);
static int dnfbcon_updatevar(int con,struct fb_info *info);
static void dnfbcon_blank(int blank,struct fb_info *info);
static void dn_fb_set_disp(int con,struct fb_info *info);
static struct display disp[MAX_NR_CONSOLES];
static struct fb_info fb_info;
static struct fb_ops dn_fb_ops = {
owner: THIS_MODULE,
fb_get_fix: dn_fb_get_fix,
fb_get_var: dn_fb_get_var,
fb_set_var: dn_fb_set_var,
fb_get_cmap: dn_fb_get_cmap,
fb_set_cmap: dn_fb_set_cmap,
};
static int currcon=0;
#define NUM_TOTAL_MODES 1
struct fb_var_screeninfo dn_fb_predefined[] = {
{ 0, },
};
static char dn_fb_name[]="Apollo ";
/* accel stuff */
#define USE_DN_ACCEL
static struct display_switch dispsw_apollofb;
static int dn_fb_get_fix(struct fb_fix_screeninfo *fix, int con,
struct fb_info *info) {
strcpy(fix->id,"Apollo Mono");
fix->smem_start=(FRAME_BUFFER_START+IO_BASE);
fix->smem_len=FRAME_BUFFER_LEN;
fix->type=FB_TYPE_PACKED_PIXELS;
fix->type_aux=0;
fix->visual=FB_VISUAL_MONO10;
fix->xpanstep=0;
fix->ypanstep=0;
fix->ywrapstep=0;
fix->line_length=256;
return 0;
}
static int dn_fb_get_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info) {
var->xres=1280;
var->yres=1024;
var->xres_virtual=2048;
var->yres_virtual=1024;
var->xoffset=0;
var->yoffset=0;
var->bits_per_pixel=1;
var->grayscale=0;
var->nonstd=0;
var->activate=0;
var->height=-1;
var->width=-1;
var->pixclock=0;
var->left_margin=0;
var->right_margin=0;
var->hsync_len=0;
var->vsync_len=0;
var->sync=0;
var->vmode=FB_VMODE_NONINTERLACED;
return 0;
}
static int dn_fb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info) {
printk("fb_set_var\n");
if(var->xres!=1280)
return -EINVAL;
if(var->yres!=1024)
return -EINVAL;
if(var->xres_virtual!=2048)
return -EINVAL;
if(var->yres_virtual!=1024)
return -EINVAL;
if(var->xoffset!=0)
return -EINVAL;
if(var->yoffset!=0)
return -EINVAL;
if(var->bits_per_pixel!=1)
return -EINVAL;
if(var->grayscale!=0)
return -EINVAL;
if(var->nonstd!=0)
return -EINVAL;
if(var->activate!=0)
return -EINVAL;
if(var->pixclock!=0)
return -EINVAL;
if(var->left_margin!=0)
return -EINVAL;
if(var->right_margin!=0)
return -EINVAL;
if(var->hsync_len!=0)
return -EINVAL;
if(var->vsync_len!=0)
return -EINVAL;
if(var->sync!=0)
return -EINVAL;
if(var->vmode!=FB_VMODE_NONINTERLACED)
return -EINVAL;
return 0;
}
static int dn_fb_get_cmap(struct fb_cmap *cmap,int kspc,int con,
struct fb_info *info) {
printk("get cmap not supported\n");
return -EINVAL;
}
static int dn_fb_set_cmap(struct fb_cmap *cmap,int kspc,int con,
struct fb_info *info) {
printk("set cmap not supported\n");
return -EINVAL;
}
static void dn_fb_set_disp(int con, struct fb_info *info) {
struct fb_fix_screeninfo fix;
struct display *display;
dn_fb_get_fix(&fix,con, info);
if (con>=0)
display=&fb_display[con];
else
display=&disp[0];
if(con==-1)
con=0;
display->screen_base = (u_char *)fix.smem_start;
display->visual = fix.visual;
display->type = fix.type;
display->type_aux = fix.type_aux;
display->ypanstep = fix.ypanstep;
display->ywrapstep = fix.ywrapstep;
display->can_soft_blank = 1;
display->inverse = 0;
display->line_length = fix.line_length;
#ifdef FBCON_HAS_MFB
display->dispsw = &fbcon_mfb;
#else
display->dispsw=&fbcon_dummy;
#endif
}
unsigned long __init dnfb_init(unsigned long mem_start) {
int err;
fb_info.changevar=NULL;
strcpy(&fb_info.modename[0],dn_fb_name);
fb_info.fontname[0]=0;
fb_info.disp=disp;
fb_info.switch_con=&dnfbcon_switch;
fb_info.updatevar=&dnfbcon_updatevar;
fb_info.blank=&dnfbcon_blank;
fb_info.node = -1;
fb_info.fbops = &dn_fb_ops;
dn_fb_get_var(&disp[0].var,0, &fb_info);
dn_fb_set_disp(-1, &fb_info);
err=register_framebuffer(&fb_info);
if(err < 0) {
panic("unable to register apollo frame buffer\n");
}
/* now we have registered we can safely setup the hardware */
outb(RESET_CREG, AP_CONTROL_3A);
outw(0x0, AP_WRITE_ENABLE);
outb(NORMAL_MODE, AP_CONTROL_0);
outb((AD_BLT | DST_EQ_SRC | NORM_CREG1), AP_CONTROL_1);
outb(S_DATA_PLN, AP_CONTROL_2);
outw(SWAP(0x3), AP_ROP_1);
printk("apollo frame buffer alive and kicking !\n");
return mem_start;
}
static int dnfbcon_switch(int con, struct fb_info *info) {
currcon=con;
return 0;
}
static int dnfbcon_updatevar(int con, struct fb_info *info) {
return 0;
}
static void dnfbcon_blank(int blank, struct fb_info *info) {
if(blank) {
outb(0x0, AP_CONTROL_3A);
}
else {
outb(0x1, AP_CONTROL_3A);
}
return ;
}
void dn_bitblt(struct display *p,int x_src,int y_src, int x_dest, int y_dest,
int x_count, int y_count) {
int incr,y_delta,pre_read=0,x_end,x_word_count;
ushort *src,dummy;
uint start_mask,end_mask,dest;
short i,j;
incr=(y_dest<=y_src) ? 1 : -1 ;
src=(ushort *)(p->screen_base+ y_src*p->next_line+(x_src >> 4));
dest=y_dest*(p->next_line >> 1)+(x_dest >> 4);
if(incr>0) {
y_delta=(p->next_line*8)-x_src-x_count;
x_end=x_dest+x_count-1;
x_word_count=(x_end>>4) - (x_dest >> 4) + 1;
start_mask=0xffff0000 >> (x_dest & 0xf);
end_mask=0x7ffff >> (x_end & 0xf);
outb((((x_dest & 0xf) - (x_src &0xf)) % 16)|(0x4 << 5),AP_CONTROL_0);
if((x_dest & 0xf) < (x_src & 0xf))
pre_read=1;
}
else {
y_delta=-((p->next_line*8)-x_src-x_count);
x_end=x_dest-x_count+1;
x_word_count=(x_dest>>4) - (x_end >> 4) + 1;
start_mask=0x7ffff >> (x_dest & 0xf);
end_mask=0xffff0000 >> (x_end & 0xf);
outb(((-((x_src & 0xf) - (x_dest &0xf))) % 16)|(0x4 << 5),AP_CONTROL_0);
if((x_dest & 0xf) > (x_src & 0xf))
pre_read=1;
}
for(i=0;i<y_count;i++) {
outb(0xc | (dest >> 16), AP_CONTROL_3A);
if(pre_read) {
dummy=*src;
src+=incr;
}
if(x_word_count) {
outb(start_mask,AP_WRITE_ENABLE);
*src=dest;
src+=incr;
dest+=incr;
outb(0,AP_WRITE_ENABLE);
for(j=1;j<(x_word_count-1);j++) {
*src=dest;
src+=incr;
dest+=incr;
}
outb(start_mask,AP_WRITE_ENABLE);
*src=dest;
dest+=incr;
src+=incr;
}
else {
outb(start_mask | end_mask, AP_WRITE_ENABLE);
*src=dest;
dest+=incr;
src+=incr;
}
src+=(y_delta/16);
dest+=(y_delta/16);
}
outb(NORMAL_MODE,AP_CONTROL_0);
}
static void bmove_apollofb(struct display *p, int sy, int sx, int dy, int dx,
int height, int width)
{
int fontheight,fontwidth;
fontheight=fontheight(p);
fontwidth=fontwidth(p);
#ifdef USE_DN_ACCEL
dn_bitblt(p,sx,sy*fontheight,dx,dy*fontheight,width*fontwidth,
height*fontheight);
#else
u_char *src, *dest;
u_int rows;
if (sx == 0 && dx == 0 && width == p->next_line) {
src = p->screen_base+sy*fontheight*width;
dest = p->screen_base+dy*fontheight*width;
mymemmove(dest, src, height*fontheight*width);
} else if (dy <= sy) {
src = p->screen_base+sy*fontheight*next_line+sx;
dest = p->screen_base+dy*fontheight*next_line+dx;
for (rows = height*fontheight; rows--;) {
mymemmove(dest, src, width);
src += p->next_line;
dest += p->next_line;
}
} else {
src = p->screen_base+((sy+height)*fontheight-1)*p->next_line+sx;
dest = p->screen_base+((dy+height)*fontheight-1)*p->next_line+dx;
for (rows = height*fontheight; rows--;) {
mymemmove(dest, src, width);
src -= p->next_line;
dest -= p->next_line;
}
}
#endif
}
static void clear_apollofb(struct vc_data *conp, struct display *p, int sy, int sx,
int height, int width)
{
fbcon_mfb_clear(conp,p,sy,sx,height,width);
}
static void putc_apollofb(struct vc_data *conp, struct display *p, int c, int yy,
int xx)
{
fbcon_mfb_putc(conp,p,c,yy,xx);
}
static void putcs_apollofb(struct vc_data *conp, struct display *p, const char *s,
int count, int yy, int xx)
{
fbcon_mfb_putcs(conp,p,s,count,yy,xx);
}
static void rev_char_apollofb(struct display *p, int xx, int yy)
{
fbcon_mfb_revc(p,xx,yy);
}
static struct display_switch dispsw_apollofb = {
setup: fbcon_mfb_setup,
bmove: bmove_apollofb,
clear: clear_apollofb,
putc: putc_apollofb,
putcs: putcs_apollofb,
revc: rev_char_apollofb,
fontwidthmask: FONTWIDTH(8)
};
MODULE_LICENSE("GPL");
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