/*
* linux/drivers/video/virgefb.c -- CyberVision64/3D frame buffer device
*
* Copyright (C) 1997 André Heynatz
*
*
* This file is based on the CyberVision frame buffer device (cyberfb.c):
*
* Copyright (C) 1996 Martin Apel
* Geert Uytterhoeven
*
* Zorro II additions :
*
* Copyright (C) 1998-2000 Christian T. Steigies
*
* Initialization additions :
*
* Copyright (C) 1998-2000 Ken Tyler
*
* Parts of the Initialization code are based on Cyberfb.c by Allan Bair,
* and on the NetBSD CyberVision64 frame buffer driver by Michael Teske who gave
* permission for its use.
*
* Many thanks to Frank Mariak for his assistance with ZORRO 2 access and other
* mysteries.
*
*
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
#undef VIRGEFBDEBUG
#undef VIRGEFBDUMP
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/zorro.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/amigahw.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <video/fbcon.h>
#include <video/fbcon-cfb8.h>
#include <video/fbcon-cfb16.h>
#include <video/fbcon-cfb32.h>
#include "virgefb.h"
#ifdef VIRGEFBDEBUG
#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
#else
#define DPRINTK(fmt, args...)
#endif
#ifdef VIRGEFBDUMP
static void cv64_dump(void);
#define DUMP cv64_dump()
#else
#define DUMP
#endif
/*
* Macros for register access and zorro control
*/
static inline void mb_inline(void) { mb(); } /* for use in comma expressions */
/* Set zorro 2 map */
#define SelectIO \
mb(); \
if (on_zorro2) { \
(*(volatile u16 *)((u8 *)(vcode_switch_base + 0x04)) = 0x01); \
mb(); \
}
#define SelectMMIO \
mb(); \
if (on_zorro2) { \
(*(volatile u16 *)((u8 *)(vcode_switch_base + 0x04)) = 0x02); \
mb(); \
}
#define SelectCFG \
mb(); \
if (on_zorro2) { \
(*(volatile u16 *)((u8 *)(vcode_switch_base + 0x04)) = 0x03); \
mb(); \
}
/* Set pass through, 0 = amiga, !=0 = cv64/3d */
#define SetVSwitch(x) \
mb(); \
(*(volatile u16 *)((u8 *)(vcode_switch_base)) = \
(u16)(x ? 0 : 1)); \
mb();
/* Zorro2 endian 'aperture' */
#define ENDIAN_BYTE 2
#define ENDIAN_WORD 1
#define ENDIAN_LONG 0
#define Select_Zorro2_FrameBuffer(x) \
do { \
if (on_zorro2) { \
mb(); \
(*(volatile u16 *)((u8 *)(vcode_switch_base + 0x08)) = \
(x * 0x40)); \
mb(); \
} \
} while (0)
/* SetPortVal - only used for interrupt enable (not yet implemented) */
#if 0
#define SetPortVal(x) \
mb(); \
(*(volatile u16 *)((u8 *)(vcode_switch_base + 0x0c)) = \
(u16)x); \
mb();
#endif
/* IO access */
#define byte_access_io(x) (((x) & 0x3ffc) | (((x) & 3)^3) | (((x) & 3) <<14))
#define byte_access_mmio(x) (((x) & 0xfffc) | (((x) & 3)^3))
/* Write 8 bit VGA register - used once for chip wakeup */
#define wb_vgaio(reg, dat) \
SelectIO; \
(*(volatile u8 *)(vgaio_regs + ((u32)byte_access_io(reg) & 0xffff)) = \
(dat & 0xff)); \
SelectMMIO;
/* Read 8 bit VGA register - only used in dump (SelectIO not needed on read ?) */
#ifdef VIRGEFBDUMP
#define rb_vgaio(reg) \
({ \
u8 __zzyzx; \
SelectIO; \
__zzyzx = (*(volatile u8 *)((vgaio_regs)+(u32)byte_access_io(reg))); \
SelectMMIO; \
__zzyzx; \
})
#endif
/* MMIO access */
/* Read 8 bit MMIO register */
#define rb_mmio(reg) \
(mb_inline(), \
(*(volatile u8 *)(mmio_regs + 0x8000 + (u32)byte_access_mmio(reg))))
/* Write 8 bit MMIO register */
#define wb_mmio(reg,dat) \
mb(); \
(*(volatile u8 *)(mmio_regs + 0x8000 + (byte_access_mmio((reg) & 0xffff))) = \
(dat & 0xff)); \
mb();
/* Read 32 bit MMIO register */
#define rl_mmio(reg) \
(mb_inline(), \
(*((volatile u32 *)((u8 *)((mmio_regs + (on_zorro2 ? 0x20000 : 0)) + (reg))))))
/* Write 32 bit MMIO register */
#define wl_mmio(reg,dat) \
mb(); \
((*(volatile u32 *)((u8 *)((mmio_regs + (on_zorro2 ? 0x20000 : 0)) + (reg)))) = \
(u32)(dat)); \
mb();
/* Write to virge graphics register */
#define wgfx(reg, dat) do { wb_mmio(GCT_ADDRESS, (reg)); wb_mmio(GCT_ADDRESS_W, (dat)); } while (0)
/* Write to virge sequencer register */
#define wseq(reg, dat) do { wb_mmio(SEQ_ADDRESS, (reg)); wb_mmio(SEQ_ADDRESS_W, (dat)); } while (0)
/* Write to virge CRT controller register */
#define wcrt(reg, dat) do { wb_mmio(CRT_ADDRESS, (reg)); wb_mmio(CRT_ADDRESS_W, (dat)); } while (0)
/* Write to virge attribute register */
#define watr(reg, dat) \
do { \
volatile unsigned char watr_tmp; \
watr_tmp = rb_mmio(ACT_ADDRESS_RESET); \
wb_mmio(ACT_ADDRESS_W, (reg)); \
wb_mmio(ACT_ADDRESS_W, (dat)); \
udelay(10); \
} while (0)
/* end of macros */
struct virgefb_par {
struct fb_var_screeninfo var;
__u32 type;
__u32 type_aux;
__u32 visual;
__u32 line_length;
};
static struct virgefb_par current_par;
static int current_par_valid = 0;
static struct display disp;
static struct fb_info fb_info;
static union {
#ifdef FBCON_HAS_CFB16
u16 cfb16[16];
#endif
#ifdef FBCON_HAS_CFB32
u32 cfb32[16];
#endif
} fbcon_cmap;
/*
* Switch for Chipset Independency
*/
static struct fb_hwswitch {
/* Initialisation */
int (*init)(void);
/* Display Control */
int (*encode_fix)(struct fb_fix_screeninfo *fix, struct virgefb_par *par);
int (*decode_var)(struct fb_var_screeninfo *var, struct virgefb_par *par);
int (*encode_var)(struct fb_var_screeninfo *var, struct virgefb_par *par);
int (*getcolreg)(u_int regno, u_int *red, u_int *green, u_int *blue,
u_int *transp, struct fb_info *info);
void (*blank)(int blank);
} *fbhw;
static unsigned char blit_maybe_busy = 0;
/*
* Frame Buffer Name
*/
static char virgefb_name[16] = "CyberVision/3D";
/*
* CyberVision64/3d Graphics Board
*/
static unsigned char virgefb_colour_table [256][3];
static unsigned long v_ram;
static unsigned long v_ram_size;
static volatile unsigned char *mmio_regs;
static volatile unsigned char *vgaio_regs;
static unsigned long v_ram_phys;
static unsigned long mmio_regs_phys;
static unsigned long vcode_switch_base;
static unsigned char on_zorro2;
/*
* Offsets from start of video ram to appropriate ZIII aperture
*/
#ifdef FBCON_HAS_CFB8
#define CYBMEM_OFFSET_8 0x800000 /* BGRX */
#endif
#ifdef FBCON_HAS_CFB16
#define CYBMEM_OFFSET_16 0x400000 /* GBXR */
#endif
#ifdef FBCON_HAS_CFB32
#define CYBMEM_OFFSET_32 0x000000 /* XRGB */
#endif
/*
* MEMCLOCK was 32MHz, 64MHz works, 72MHz doesn't (on my board)
*/
#define MEMCLOCK 50000000
/*
* Predefined Video Modes
*/
static struct {
const char *name;
struct fb_var_screeninfo var;
} virgefb_predefined[] __initdata = {
#ifdef FBCON_HAS_CFB8
{
"640x480-8", { /* Cybervision 8 bpp */
640, 480, 640, 480, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 31250, 160, 136, 82, 61, 88, 2,
0, FB_VMODE_NONINTERLACED
}
}, {
"768x576-8", { /* Cybervision 8 bpp */
768, 576, 768, 576, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 29411, 144, 112, 32, 15, 64, 2,
0, FB_VMODE_NONINTERLACED
}
}, {
"800x600-8", { /* Cybervision 8 bpp */
800, 600, 800, 600, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 28571, 168, 104, 22, 1, 48, 2,
0, FB_VMODE_NONINTERLACED
}
}, {
#if 0
"1024x768-8", { /* Cybervision 8 bpp */
1024, 768, 1024, 768, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
0, FB_VMODE_NONINTERLACED
}
#else
"1024x768-8", {
1024, 768, 1024, 768, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
#if 0
0, 0, -1, -1, FB_ACCELF_TEXT, 12500, 184, 40, 40, 2, 96, 1,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
}
#else
0, 0, -1, -1, FB_ACCELF_TEXT, 12699, 176, 16, 28, 1, 96, 3,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
}
#endif
#endif
}, {
"1152x886-8", { /* Cybervision 8 bpp */
1152, 886, 1152, 886, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 19230, 280, 168, 45, 1, 64, 10,
0, FB_VMODE_NONINTERLACED
}
}, {
"1280x1024-8", { /* Cybervision 8 bpp */
1280, 1024, 1280, 1024, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
#if 0
0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
}
#else
0, 0, -1, -1, FB_ACCELF_TEXT, 7414, 232, 64, 38, 1, 112, 3,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
}
#endif
}, {
"1600x1200-8", { /* Cybervision 8 bpp */
1600, 1200, 1600, 1200, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
#if 0
0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
0, FB_VMODE_NONINTERLACED
}
#else
0, 0, -1, -1, FB_ACCELF_TEXT, 6411, 256, 32, 52, 10, 160, 8,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
}
#endif
},
#endif
#ifdef FBCON_HAS_CFB16
{
"640x480-16", { /* Cybervision 16 bpp */
640, 480, 640, 480, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 31250, 152, 144, 82, 61, 88, 2,
0, FB_VMODE_NONINTERLACED
}
}, {
"768x576-16", { /* Cybervision 16 bpp */
768, 576, 768, 576, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 29411, 144, 112, 32, 15, 64, 2,
0, FB_VMODE_NONINTERLACED
}
}, {
"800x600-16", { /* Cybervision 16 bpp */
800, 600, 800, 600, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 28571, 168, 104, 22, 1, 48, 2,
0, FB_VMODE_NONINTERLACED
}
}, {
#if 0
"1024x768-16", { /* Cybervision 16 bpp */
1024, 768, 1024, 768, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
0, FB_VMODE_NONINTERLACED
}
#else
"1024x768-16", {
1024, 768, 1024, 768, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 12500, 184, 40, 40, 2, 96, 1,
FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
}
#endif
}, {
"1152x886-16", { /* Cybervision 16 bpp */
1152, 886, 1152, 886, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 19230, 280, 168, 45, 1, 64, 10,
0, FB_VMODE_NONINTERLACED
}
}, {
"1280x1024-16", { /* Cybervision 16 bpp */
1280, 1024, 1280, 1024, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
0, FB_VMODE_NONINTERLACED
}
}, {
"1600x1200-16", { /* Cybervision 16 bpp */
1600, 1200, 1600, 1200, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
0, FB_VMODE_NONINTERLACED
}
},
#endif
#ifdef FBCON_HAS_CFB32
{
"640x480-32", { /* Cybervision 32 bpp */
640, 480, 640, 480, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 31250, 160, 136, 82, 61, 88, 2,
0, FB_VMODE_NONINTERLACED
}
}, {
"768x576-32", { /* Cybervision 32 bpp */
768, 576, 768, 576, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 29411, 144, 112, 32, 15, 64, 2,
0, FB_VMODE_NONINTERLACED
}
}, {
"800x600-32", { /* Cybervision 32 bpp */
800, 600, 800, 600, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 28571, 168, 104, 22, 1, 48, 2,
0, FB_VMODE_NONINTERLACED
}
}, {
"1024x768-32", { /* Cybervision 32 bpp */
1024, 768, 1024, 768, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
0, FB_VMODE_NONINTERLACED
}
}, {
"1152x886-32", { /* Cybervision 32 bpp */
1152, 886, 1152, 886, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 19230, 280, 168, 45, 1, 64, 10,
0, FB_VMODE_NONINTERLACED
}
}, {
"1280x1024-32", { /* Cybervision 32 bpp */
1280, 1024, 1280, 1024, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
0, FB_VMODE_NONINTERLACED
}
}, {
"1600x1200-32", { /* Cybervision 32 bpp */
1600, 1200, 1600, 1200, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
0, FB_VMODE_NONINTERLACED
}
},
#endif
/* interlaced modes */
#ifdef FBCON_HAS_CFB8
{
"1024x768-8i", { /* Cybervision 8 bpp */
1024, 768, 1024, 768, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
0, FB_VMODE_INTERLACED
}
}, {
"1280x1024-8i", { /* Cybervision 8 bpp */
1280, 1024, 1280, 1024, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
0, FB_VMODE_INTERLACED
}
}, {
"1600x1200-8i", { /* Cybervision 8 bpp */
1600, 1200, 1600, 1200, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
0, FB_VMODE_INTERLACED
}
},
#endif
#ifdef FBCON_HAS_CFB16
{
"1024x768-16i", { /* Cybervision 16 bpp */
1024, 768, 1024, 768, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 20833, 272, 168, 39, 2, 72, 1,
0, FB_VMODE_INTERLACED
}
}, {
"1280x1024-16i", { /* Cybervision 16 bpp */
1280, 1024, 1280, 1024, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
0, FB_VMODE_INTERLACED
}
}, {
"1600x1200-16i", { /* Cybervision 16 bpp */
1600, 1200, 1600, 1200, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
0, FB_VMODE_INTERLACED
}
},
#endif
#ifdef FBCON_HAS_CFB32
{
"1024x768-32i", { /* Cybervision 32 bpp */
1024, 768, 1024, 768, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 22222, 216, 144, 39, 2, 72, 1,
0, FB_VMODE_INTERLACED
}
}, {
"1280x1024-32i", { /* Cybervision 32 bpp */
1280, 1024, 1280, 1024, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {23, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 17857, 232, 232, 71, 15, 176, 12,
0, FB_VMODE_INTERLACED
}
}, {
"1600x1200-32i", { /* Cybervision 32 bpp */
1600, 1200, 1600, 1200, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 13698, 336, 224, 77, 15, 176, 12,
0, FB_VMODE_INTERLACED
}
},
#endif
/* doublescan modes */
#ifdef FBCON_HAS_CFB8
{
"320x240-8d", { /* Cybervision 8 bpp */
320, 240, 320, 240, 0, 0, 8, 0,
{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 59259, 80, 80, 45, 26, 32, 1,
0, FB_VMODE_DOUBLE
}
},
#endif
#ifdef FBCON_HAS_CFB16
{
"320x240-16d", { /* Cybervision 16 bpp */
320, 240, 320, 240, 0, 0, 16, 0,
{11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 59259, 80, 80, 45, 26, 32, 1,
0, FB_VMODE_DOUBLE
}
},
#endif
#ifdef FBCON_HAS_CFB32
{
"320x240-32d", { /* Cybervision 32 bpp */
320, 240, 320, 240, 0, 0, 32, 0,
{16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {24, 0, 0},
0, 0, -1, -1, FB_ACCELF_TEXT, 59259, 80, 80, 45, 26, 32, 1,
0, FB_VMODE_DOUBLE
}
},
#endif
};
#define NUM_TOTAL_MODES ARRAY_SIZE(virgefb_predefined)
/*
* Default to 800x600 for video=virge8:, virge16: or virge32:
*/
#ifdef FBCON_HAS_CFB8
#define VIRGE8_DEFMODE (2)
#endif
#ifdef FBCON_HAS_CFB16
#define VIRGE16_DEFMODE (9)
#endif
#ifdef FBCON_HAS_CFB32
#define VIRGE32_DEFMODE (16)
#endif
static struct fb_var_screeninfo virgefb_default;
static int virgefb_inverse = 0;
/*
* Interface used by the world
*/
int virgefb_setup(char*);
static int virgefb_get_fix(struct fb_fix_screeninfo *fix, int con,
struct fb_info *info);
static int virgefb_get_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int virgefb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info);
static int virgefb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info);
static int virgefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info);
static int virgefb_blank(int blank, struct fb_info *info);
/*
* Interface to the low level console driver
*/
int virgefb_init(void);
static int virgefb_switch(int con, struct fb_info *info);
static int virgefb_updatevar(int con, struct fb_info *info);
/*
* Text console acceleration
*/
#ifdef FBCON_HAS_CFB8
static struct display_switch fbcon_virge8;
#endif
#ifdef FBCON_HAS_CFB16
static struct display_switch fbcon_virge16;
#endif
#ifdef FBCON_HAS_CFB32
static struct display_switch fbcon_virge32;
#endif
/*
* Hardware Specific Routines
*/
static int virge_init(void);
static int virgefb_encode_fix(struct fb_fix_screeninfo *fix,
struct virgefb_par *par);
static int virgefb_decode_var(struct fb_var_screeninfo *var,
struct virgefb_par *par);
static int virgefb_encode_var(struct fb_var_screeninfo *var,
struct virgefb_par *par);
static int virgefb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
u_int *transp, struct fb_info *info);
static void virgefb_gfx_on_off(int blank);
static inline void virgefb_wait_for_idle(void);
static void virgefb_BitBLT(u_short curx, u_short cury, u_short destx, u_short desty,
u_short width, u_short height, u_short stride, u_short depth);
static void virgefb_RectFill(u_short x, u_short y, u_short width, u_short height,
u_short color, u_short stride, u_short depth);
/*
* Internal routines
*/
static void virgefb_get_par(struct virgefb_par *par);
static void virgefb_set_par(struct virgefb_par *par);
static int virgefb_do_fb_set_var(struct fb_var_screeninfo *var, int isactive);
static void virgefb_set_disp(int con, struct fb_info *info);
static int virgefb_get_video_mode(const char *name);
static void virgefb_set_video(struct fb_var_screeninfo *var);
/*
* Additions for Initialization
*/
static void virgefb_load_video_mode(struct fb_var_screeninfo *video_mode);
static int cv3d_has_4mb(void);
static unsigned short virgefb_compute_clock(unsigned long freq);
static inline unsigned char rattr(short);
static inline unsigned char rseq(short);
static inline unsigned char rcrt(short);
static inline unsigned char rgfx(short);
static inline void gfx_on_off(int toggle);
static void virgefb_pci_init(void);
/* -------------------- Hardware specific routines ------------------------- */
/*
* Functions for register access
*/
/* Read attribute controller register */
static inline unsigned char rattr(short idx)
{
volatile unsigned char rattr_tmp;
rattr_tmp = rb_mmio(ACT_ADDRESS_RESET);
wb_mmio(ACT_ADDRESS_W, idx);
return (rb_mmio(ACT_ADDRESS_R));
}
/* Read sequencer register */
static inline unsigned char rseq(short idx)
{
wb_mmio(SEQ_ADDRESS, idx);
return (rb_mmio(SEQ_ADDRESS_R));
}
/* Read CRT controller register */
static inline unsigned char rcrt(short idx)
{
wb_mmio(CRT_ADDRESS, idx);
return (rb_mmio(CRT_ADDRESS_R));
}
/* Read graphics controller register */
static inline unsigned char rgfx(short idx)
{
wb_mmio(GCT_ADDRESS, idx);
return (rb_mmio(GCT_ADDRESS_R));
}
/*
* Initialization
*/
/* PCI init */
void virgefb_pci_init(void) {
DPRINTK("ENTER\n");
SelectCFG;
if (on_zorro2) {
*((short *)(vgaio_regs + 0x00000010)) = 0;
*((long *)(vgaio_regs + 0x00000004)) = 0x02000003;
} else {
*((short *)(vgaio_regs + 0x000e0010)) = 0;
*((long *)(vgaio_regs + 0x000e0004)) = 0x02000003;
}
/* SelectIO is in wb_vgaio macro */
wb_vgaio(SREG_VIDEO_SUBS_ENABLE, 0x01);
/* SelectMMIO is in wb_vgaio macro */
DPRINTK("EXIT\n");
return;
}
/*
* Initalize all mode independent regs, find mem size and clear mem
*/
static int virge_init(void)
{
int i;
unsigned char tmp;
DPRINTK("ENTER\n");
virgefb_pci_init();
wb_mmio(GREG_MISC_OUTPUT_W, 0x07); /* colour, ram enable, clk sel */
wseq(SEQ_ID_UNLOCK_EXT, 0x06); /* unlock extensions */
tmp = rb_mmio(GREG_MISC_OUTPUT_R);
wcrt(CRT_ID_REGISTER_LOCK_1, 0x48); /* unlock CR2D to CR3F */
wcrt(CRT_ID_BACKWAD_COMP_1, 0x00); /* irq disable */
wcrt(CRT_ID_REGISTER_LOCK_2, 0xa5); /* unlock CR40 to CRFF and more */
wcrt(CRT_ID_REGISTER_LOCK,0x00); /* unlock h and v timing */
wcrt(CRT_ID_SYSTEM_CONFIG, 0x01); /* unlock enhanced programming registers */
wb_mmio(GREG_FEATURE_CONTROL_W, 0x00);
wcrt(CRT_ID_EXT_MISC_CNTL, 0x00); /* b2 = 0 to allow VDAC mmio access */
#if 0
/* write strap options ... ? */
wcrt(CRT_ID_CONFIG_1, 0x08);
wcrt(CRT_ID_CONFIG_2, 0xff); /* 0x0x2 bit needs to be set ?? */
wcrt(CRT_ID_CONFIG_3, 0x0f);
wcrt(CRT_ID_CONFIG_4, 0x1a);
#endif
wcrt(CRT_ID_EXT_MISC_CNTL_1, 0x82); /* PCI DE and software reset S3D engine */
/* EXT_MISC_CNTL_1, CR66 bit 0 should be the same as bit 0 MR_ADVANCED_FUNCTION_CONTROL - check */
wl_mmio(MR_ADVANCED_FUNCTION_CONTROL, 0x00000011); /* enhanced mode, linear addressing */
/* crtc registers */
wcrt(CRT_ID_PRESET_ROW_SCAN, 0x00);
/* Disable h/w cursor */
wcrt(CRT_ID_CURSOR_START, 0x00);
wcrt(CRT_ID_CURSOR_END, 0x00);
wcrt(CRT_ID_START_ADDR_HIGH, 0x00);
wcrt(CRT_ID_START_ADDR_LOW, 0x00);
wcrt(CRT_ID_CURSOR_LOC_HIGH, 0x00);
wcrt(CRT_ID_CURSOR_LOC_LOW, 0x00);
wcrt(CRT_ID_EXT_MODE, 0x00);
wcrt(CRT_ID_HWGC_MODE, 0x00);
wcrt(CRT_ID_HWGC_ORIGIN_X_HI, 0x00);
wcrt(CRT_ID_HWGC_ORIGIN_X_LO, 0x00);
wcrt(CRT_ID_HWGC_ORIGIN_Y_HI, 0x00);
wcrt(CRT_ID_HWGC_ORIGIN_Y_LO, 0x00);
i = rcrt(CRT_ID_HWGC_MODE);
wcrt(CRT_ID_HWGC_FG_STACK, 0x00);
wcrt(CRT_ID_HWGC_FG_STACK, 0x00);
wcrt(CRT_ID_HWGC_FG_STACK, 0x00);
wcrt(CRT_ID_HWGC_BG_STACK, 0x00);
wcrt(CRT_ID_HWGC_BG_STACK, 0x00);
wcrt(CRT_ID_HWGC_BG_STACK, 0x00);
wcrt(CRT_ID_HWGC_START_AD_HI, 0x00);
wcrt(CRT_ID_HWGC_START_AD_LO, 0x00);
wcrt(CRT_ID_HWGC_DSTART_X, 0x00);
wcrt(CRT_ID_HWGC_DSTART_Y, 0x00);
wcrt(CRT_ID_UNDERLINE_LOC, 0x00);
wcrt(CRT_ID_MODE_CONTROL, 0xe3);
wcrt(CRT_ID_BACKWAD_COMP_2, 0x22); /* blank bdr bit 5 blanking only on 8 bit */
wcrt(CRT_ID_EX_SYNC_1, 0x00);
/* memory */
wcrt(CRT_ID_EXT_SYS_CNTL_3, 0x00);
wcrt(CRT_ID_MEMORY_CONF, 0x08); /* config enhanced map */
wcrt(CRT_ID_EXT_MEM_CNTL_1, 0x08); /* MMIO Select (0x0c works as well)*/
wcrt(CRT_ID_EXT_MEM_CNTL_2, 0x02); /* why 02 big endian 00 works ? */
wcrt(CRT_ID_EXT_MEM_CNTL_4, 0x9f); /* config big endian - 0x00 ? */
wcrt(CRT_ID_LAW_POS_HI, 0x00);
wcrt(CRT_ID_LAW_POS_LO, 0x00);
wcrt(CRT_ID_EXT_MISC_CNTL_1, 0x81);
wcrt(CRT_ID_MISC_1, 0x90); /* must follow CRT_ID_EXT_MISC_CNTL_1 */
wcrt(CRT_ID_LAW_CNTL, 0x13); /* force 4 Meg for test */
if (cv3d_has_4mb()) {
v_ram_size = 0x00400000;
wcrt(CRT_ID_LAW_CNTL, 0x13); /* 4 MB */
} else {
v_ram_size = 0x00200000;
wcrt(CRT_ID_LAW_CNTL, 0x12); /* 2 MB */
}
if (on_zorro2)
v_ram_size -= 0x60000; /* we need some space for the registers */
wcrt(CRT_ID_EXT_SYS_CNTL_4, 0x00);
wcrt(CRT_ID_EXT_DAC_CNTL, 0x00); /* 0x10 for X11 cursor mode */
/* sequencer registers */
wseq(SEQ_ID_CLOCKING_MODE, 0x01); /* 8 dot clock */
wseq(SEQ_ID_MAP_MASK, 0xff);
wseq(SEQ_ID_CHAR_MAP_SELECT, 0x00);
wseq(SEQ_ID_MEMORY_MODE, 0x02);
wseq(SEQ_ID_RAMDAC_CNTL, 0x00);
wseq(SEQ_ID_SIGNAL_SELECT, 0x00);
wseq(SEQ_ID_EXT_SEQ_REG9, 0x00); /* MMIO and PIO reg access enabled */
wseq(SEQ_ID_EXT_MISC_SEQ, 0x00);
wseq(SEQ_ID_CLKSYN_CNTL_1, 0x00);
wseq(SEQ_ID_EXT_SEQ, 0x00);
/* graphic registers */
wgfx(GCT_ID_SET_RESET, 0x00);
wgfx(GCT_ID_ENABLE_SET_RESET, 0x00);
wgfx(GCT_ID_COLOR_COMPARE, 0x00);
wgfx(GCT_ID_DATA_ROTATE, 0x00);
wgfx(GCT_ID_READ_MAP_SELECT, 0x00);
wgfx(GCT_ID_GRAPHICS_MODE, 0x40);
wgfx(GCT_ID_MISC, 0x01);
wgfx(GCT_ID_COLOR_XCARE, 0x0f);
wgfx(GCT_ID_BITMASK, 0xff);
/* attribute registers */
for(i = 0; i <= 15; i++)
watr(ACT_ID_PALETTE0 + i, i);
watr(ACT_ID_ATTR_MODE_CNTL, 0x41);
watr(ACT_ID_OVERSCAN_COLOR, 0xff);
watr(ACT_ID_COLOR_PLANE_ENA, 0x0f);
watr(ACT_ID_HOR_PEL_PANNING, 0x00);
watr(ACT_ID_COLOR_SELECT, 0x00);
wb_mmio(VDAC_MASK, 0xff);
/* init local cmap as greyscale levels */
for (i = 0; i < 256; i++) {
virgefb_colour_table [i][0] = i;
virgefb_colour_table [i][1] = i;
virgefb_colour_table [i][2] = i;
}
/* clear framebuffer memory */
memset((char*)v_ram, 0x00, v_ram_size);
DPRINTK("EXIT\n");
return 0;
}
/*
* This function should fill in the `fix' structure based on the
* values in the `par' structure.
*/
static int virgefb_encode_fix(struct fb_fix_screeninfo *fix,
struct virgefb_par *par)
{
DPRINTK("ENTER set video phys addr\n");
memset(fix, 0, sizeof(struct fb_fix_screeninfo));
strcpy(fix->id, virgefb_name);
if (on_zorro2)
fix->smem_start = v_ram_phys;
switch (par->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
if (on_zorro2)
Select_Zorro2_FrameBuffer(ENDIAN_BYTE);
else
fix->smem_start = (v_ram_phys + CYBMEM_OFFSET_8);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
if (on_zorro2)
Select_Zorro2_FrameBuffer(ENDIAN_WORD);
else
fix->smem_start = (v_ram_phys + CYBMEM_OFFSET_16);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
if (on_zorro2)
Select_Zorro2_FrameBuffer(ENDIAN_LONG);
else
fix->smem_start = (v_ram_phys + CYBMEM_OFFSET_32);
break;
#endif
}
fix->smem_len = v_ram_size;
fix->mmio_start = mmio_regs_phys;
fix->mmio_len = 0x10000; /* TODO: verify this for the CV64/3D */
fix->type = FB_TYPE_PACKED_PIXELS;
fix->type_aux = 0;
if (par->var.bits_per_pixel == 8)
fix->visual = FB_VISUAL_PSEUDOCOLOR;
else
fix->visual = FB_VISUAL_TRUECOLOR;
fix->xpanstep = 0;
fix->ypanstep = 0;
fix->ywrapstep = 0;
fix->line_length = par->var.xres_virtual*par->var.bits_per_pixel/8;
fix->accel = FB_ACCEL_S3_VIRGE;
DPRINTK("EXIT v_ram_phys = 0x%8.8lx\n", (unsigned long)fix->smem_start);
return 0;
}
/*
* Fill the `par' structure based on the values in `var'.
* TODO: Verify and adjust values, return -EINVAL if bad.
*/
static int virgefb_decode_var(struct fb_var_screeninfo *var,
struct virgefb_par *par)
{
DPRINTK("ENTER\n");
par->var.xres = var->xres;
par->var.yres = var->yres;
par->var.xres_virtual = var->xres_virtual;
par->var.yres_virtual = var->yres_virtual;
/* roundup and validate */
par->var.xres = (par->var.xres+7) & ~7;
par->var.xres_virtual = (par->var.xres_virtual+7) & ~7;
if (par->var.xres_virtual < par->var.xres)
par->var.xres_virtual = par->var.xres;
if (par->var.yres_virtual < par->var.yres)
par->var.yres_virtual = par->var.yres;
par->var.xoffset = var->xoffset;
par->var.yoffset = var->yoffset;
par->var.bits_per_pixel = var->bits_per_pixel;
if (par->var.bits_per_pixel <= 8)
par->var.bits_per_pixel = 8;
else if (par->var.bits_per_pixel <= 16)
par->var.bits_per_pixel = 16;
else
par->var.bits_per_pixel = 32;
#ifndef FBCON_HAS_CFB32
if (par->var.bits_per_pixel == 32)
par->var.bits_per_pixel = 16;
#endif
#ifndef FBCON_HAS_CFB16
if (par->var.bits_per_pixel == 16)
par->var.bits_per_pixel = 8;
#endif
par->var.grayscale = var->grayscale;
par->var.red = var->red;
par->var.green = var->green;
par->var.blue = var->blue;
par->var.transp = var->transp;
par->var.nonstd = var->nonstd;
par->var.activate = var->activate;
par->var.height = var->height;
par->var.width = var->width;
if (var->accel_flags & FB_ACCELF_TEXT) {
par->var.accel_flags = FB_ACCELF_TEXT;
} else {
par->var.accel_flags = 0;
}
par->var.pixclock = var->pixclock;
par->var.left_margin = var->left_margin;
par->var.right_margin = var->right_margin;
par->var.upper_margin = var->upper_margin;
par->var.lower_margin = var->lower_margin;
par->var.hsync_len = var->hsync_len;
par->var.vsync_len = var->vsync_len;
par->var.sync = var->sync;
par->var.vmode = var->vmode;
DPRINTK("EXIT\n");
return 0;
}
/*
* Fill the `var' structure based on the values in `par' and maybe
* other values read out of the hardware.
*/
static int virgefb_encode_var(struct fb_var_screeninfo *var,
struct virgefb_par *par)
{
DPRINTK("ENTER\n");
memset(var, 0, sizeof(struct fb_var_screeninfo)); /* need this ? */
var->xres = par->var.xres;
var->yres = par->var.yres;
var->xres_virtual = par->var.xres_virtual;
var->yres_virtual = par->var.yres_virtual;
var->xoffset = par->var.xoffset;
var->yoffset = par->var.yoffset;
var->bits_per_pixel = par->var.bits_per_pixel;
var->grayscale = par->var.grayscale;
var->red = par->var.red;
var->green = par->var.green;
var->blue = par->var.blue;
var->transp = par->var.transp;
var->nonstd = par->var.nonstd;
var->activate = par->var.activate;
var->height = par->var.height;
var->width = par->var.width;
var->accel_flags = par->var.accel_flags;
var->pixclock = par->var.pixclock;
var->left_margin = par->var.left_margin;
var->right_margin = par->var.right_margin;
var->upper_margin = par->var.upper_margin;
var->lower_margin = par->var.lower_margin;
var->hsync_len = par->var.hsync_len;
var->vsync_len = par->var.vsync_len;
var->sync = par->var.sync;
var->vmode = par->var.vmode;
DPRINTK("EXIT\n");
return 0;
}
/*
* Set a single color register. The values supplied are already
* rounded down to the hardware's capabilities (according to the
* entries in the var structure). Return != 0 for invalid regno.
*/
static int virgefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info)
{
DPRINTK("ENTER\n");
if (((current_par.var.bits_per_pixel==8) && (regno>255)) ||
((current_par.var.bits_per_pixel!=8) && (regno>15))) {
DPRINTK("EXIT\n");
return 1;
}
if (((current_par.var.bits_per_pixel==8) && (regno<256)) ||
((current_par.var.bits_per_pixel!=8) && (regno<16))) {
virgefb_colour_table [regno][0] = red >> 10;
virgefb_colour_table [regno][1] = green >> 10;
virgefb_colour_table [regno][2] = blue >> 10;
}
switch (current_par.var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
wb_mmio(VDAC_ADDRESS_W, (unsigned char)regno);
wb_mmio(VDAC_DATA, ((unsigned char)(red >> 10)));
wb_mmio(VDAC_DATA, ((unsigned char)(green >> 10)));
wb_mmio(VDAC_DATA, ((unsigned char)(blue >> 10)));
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
fbcon_cmap.cfb16[regno] =
((red & 0xf800) |
((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11));
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
fbcon_cmap.cfb32[regno] =
/* transp = 0's or 1's ? */
(((red & 0xff00) << 8) |
((green & 0xff00) >> 0) |
((blue & 0xff00) >> 8));
break;
#endif
}
DPRINTK("EXIT\n");
return 0;
}
/*
* Read a single color register and split it into
* colors/transparent. Return != 0 for invalid regno.
*/
static int virgefb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
u_int *transp, struct fb_info *info)
{
int t;
DPRINTK("ENTER\n");
if (regno > 255) {
DPRINTK("EXIT\n");
return 1;
}
if (((current_par.var.bits_per_pixel==8) && (regno<256)) ||
((current_par.var.bits_per_pixel!=8) && (regno<16))) {
t = virgefb_colour_table [regno][0];
*red = (t<<10) | (t<<4) | (t>>2);
t = virgefb_colour_table [regno][1];
*green = (t<<10) | (t<<4) | (t>>2);
t = virgefb_colour_table [regno][2];
*blue = (t<<10) | (t<<4) | (t>>2);
}
*transp = 0;
DPRINTK("EXIT\n");
return 0;
}
/*
* (Un)Blank the screen
*/
static void virgefb_gfx_on_off(int blank)
{
DPRINTK("ENTER\n");
gfx_on_off(blank);
DPRINTK("EXIT\n");
}
/*
* CV3D low-level support
*/
static inline void wait_3d_fifo_slots(int n) /* WaitQueue */
{
do {
mb();
} while (((rl_mmio(MR_SUBSYSTEM_STATUS_R) >> 8) & 0x1f) < (n + 2));
}
static inline void virgefb_wait_for_idle(void) /* WaitIdle */
{
while(!(rl_mmio(MR_SUBSYSTEM_STATUS_R) & 0x2000)) ;
blit_maybe_busy = 0;
}
/*
* BitBLT - Through the Plane
*/
static void virgefb_BitBLT(u_short curx, u_short cury, u_short destx, u_short desty,
u_short width, u_short height, u_short stride, u_short depth)
{
unsigned int blitcmd = S3V_BITBLT | S3V_DRAW | S3V_BLT_COPY;
switch (depth) {
#ifdef FBCON_HAS_CFB8
case 8 :
blitcmd |= S3V_DST_8BPP;
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16 :
blitcmd |= S3V_DST_16BPP;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32 :
/* 32 bit uses 2 by 16 bit values, see fbcon_virge32_bmove */
blitcmd |= S3V_DST_16BPP;
break;
#endif
}
/* Set drawing direction */
/* -Y, X maj, -X (default) */
if (curx > destx) {
blitcmd |= (1 << 25); /* Drawing direction +X */
} else {
curx += (width - 1);
destx += (width - 1);
}
if (cury > desty) {
blitcmd |= (1 << 26); /* Drawing direction +Y */
} else {
cury += (height - 1);
desty += (height - 1);
}
wait_3d_fifo_slots(8); /* wait on fifo slots for 8 writes */
if (blit_maybe_busy)
virgefb_wait_for_idle();
blit_maybe_busy = 1;
wl_mmio(BLT_PATTERN_COLOR, 1); /* pattern fb color */
wl_mmio(BLT_MONO_PATTERN_0, ~0);
wl_mmio(BLT_MONO_PATTERN_1, ~0);
wl_mmio(BLT_SIZE_X_Y, ((width << 16) | height));
wl_mmio(BLT_SRC_X_Y, ((curx << 16) | cury));
wl_mmio(BLT_DEST_X_Y, ((destx << 16) | desty));
wl_mmio(BLT_SRC_DEST_STRIDE, (((stride << 16) | stride) /* & 0x0ff80ff8 */)); /* why is this needed now ? */
wl_mmio(BLT_COMMAND_SET, blitcmd);
}
/*
* Rectangle Fill Solid
*/
static void virgefb_RectFill(u_short x, u_short y, u_short width, u_short height,
u_short color, u_short stride, u_short depth)
{
unsigned int blitcmd = S3V_RECTFILL | S3V_DRAW |
S3V_BLT_CLEAR | S3V_MONO_PAT | (1 << 26) | (1 << 25);
switch (depth) {
#ifdef FBCON_HAS_CFB8
case 8 :
blitcmd |= S3V_DST_8BPP;
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16 :
blitcmd |= S3V_DST_16BPP;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32 :
/* 32 bit uses 2 times 16 bit values, see fbcon_virge32_clear */
blitcmd |= S3V_DST_16BPP;
break;
#endif
}
wait_3d_fifo_slots(5); /* wait on fifo slots for 5 writes */
if (blit_maybe_busy)
virgefb_wait_for_idle();
blit_maybe_busy = 1;
wl_mmio(BLT_PATTERN_COLOR, (color & 0xff));
wl_mmio(BLT_SIZE_X_Y, ((width << 16) | height));
wl_mmio(BLT_DEST_X_Y, ((x << 16) | y));
wl_mmio(BLT_SRC_DEST_STRIDE, (((stride << 16) | stride) /* & 0x0ff80ff8 */));
wl_mmio(BLT_COMMAND_SET, blitcmd);
}
/*
* Move cursor to x, y
*/
#if 0
static void virgefb_move_cursor(u_short x, u_short y)
{
DPRINTK("Yuck .... MoveCursor on a 3D\n");
return 0;
}
#endif
/* -------------------- Interfaces to hardware functions -------------------- */
static struct fb_hwswitch virgefb_hw_switch = {
.init = virge_init,
.encode_fix = virgefb_encode_fix,
.decode_var = virgefb_decode_var,
.encode_var = virgefb_encode_var,
.getcolreg = virgefb_getcolreg,
.blank = virgefb_gfx_on_off
};
/* -------------------- Generic routines ------------------------------------ */
/*
* Fill the hardware's `par' structure.
*/
static void virgefb_get_par(struct virgefb_par *par)
{
DPRINTK("ENTER\n");
if (current_par_valid) {
*par = current_par;
} else {
fbhw->decode_var(&virgefb_default, par);
}
DPRINTK("EXIT\n");
}
static void virgefb_set_par(struct virgefb_par *par)
{
DPRINTK("ENTER\n");
current_par = *par;
current_par_valid = 1;
DPRINTK("EXIT\n");
}
static void virgefb_set_video(struct fb_var_screeninfo *var)
{
/* Set clipping rectangle to current screen size */
unsigned int clip;
DPRINTK("ENTER\n");
wait_3d_fifo_slots(4);
clip = ((0 << 16) | (var->xres - 1));
wl_mmio(BLT_CLIP_LEFT_RIGHT, clip);
clip = ((0 << 16) | (var->yres - 1));
wl_mmio(BLT_CLIP_TOP_BOTTOM, clip);
wl_mmio(BLT_SRC_BASE, 0); /* seems we need to clear these two */
wl_mmio(BLT_DEST_BASE, 0);
/* Load the video mode defined by the 'var' data */
virgefb_load_video_mode(var);
DPRINTK("EXIT\n");
}
/*
Merge these two functions, Geert's suggestion.
static int virgefb_set_var(struct fb_var_screeninfo *var, int con, struct fb_info *info);
static int virgefb_do_fb_set_var(struct fb_var_screeninfo *var, int isactive);
*/
static int virgefb_do_fb_set_var(struct fb_var_screeninfo *var, int isactive)
{
int err, activate;
struct virgefb_par par;
DPRINTK("ENTER\n");
if ((err = fbhw->decode_var(var, &par))) {
DPRINTK("EXIT\n");
return (err);
}
activate = var->activate;
if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
virgefb_set_par(&par);
fbhw->encode_var(var, &par);
var->activate = activate;
if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
virgefb_set_video(var);
DPRINTK("EXIT\n");
return 0;
}
/*
* Get the Fixed Part of the Display
*/
static int virgefb_get_fix(struct fb_fix_screeninfo *fix, int con,
struct fb_info *info)
{
struct virgefb_par par;
int error = 0;
DPRINTK("ENTER\n");
if (con == -1)
virgefb_get_par(&par);
else
error = fbhw->decode_var(&fb_display[con].var, &par);
if (!error)
error = fbhw->encode_fix(fix, &par);
DPRINTK("EXIT\n");
return(error);
}
/*
* Get the User Defined Part of the Display
*/
static int virgefb_get_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info)
{
struct virgefb_par par;
int error = 0;
DPRINTK("ENTER\n");
if (con == -1) {
virgefb_get_par(&par);
error = fbhw->encode_var(var, &par);
disp.var = *var; /* ++Andre: don't know if this is the right place */
} else {
*var = fb_display[con].var;
}
DPRINTK("EXIT\n");
return(error);
}
static void virgefb_set_disp(int con, struct fb_info *info)
{
struct fb_fix_screeninfo fix;
struct display *display;
DPRINTK("ENTER\n");
if (con >= 0)
display = &fb_display[con];
else
display = &disp; /* used during initialization */
virgefb_get_fix(&fix, con, info);
if (con == -1)
con = 0;
if(on_zorro2) {
info->screen_base = (char*)v_ram;
} else {
switch (display->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
info->screen_base = (char*)(v_ram + CYBMEM_OFFSET_8);
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
info->screen_base = (char*)(v_ram + CYBMEM_OFFSET_16);
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
info->screen_base = (char*)(v_ram + CYBMEM_OFFSET_32);
break;
#endif
}
}
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 = virgefb_inverse;
display->line_length = display->var.xres_virtual*
display->var.bits_per_pixel/8;
switch (display->var.bits_per_pixel) {
#ifdef FBCON_HAS_CFB8
case 8:
if (display->var.accel_flags & FB_ACCELF_TEXT) {
display->dispsw = &fbcon_virge8;
#warning FIXME: We should reinit the graphics engine here
} else
display->dispsw = &fbcon_cfb8;
break;
#endif
#ifdef FBCON_HAS_CFB16
case 16:
if (display->var.accel_flags & FB_ACCELF_TEXT) {
display->dispsw = &fbcon_virge16;
} else
display->dispsw = &fbcon_cfb16;
display->dispsw_data = &fbcon_cmap.cfb16;
break;
#endif
#ifdef FBCON_HAS_CFB32
case 32:
if (display->var.accel_flags & FB_ACCELF_TEXT) {
display->dispsw = &fbcon_virge32;
} else
display->dispsw = &fbcon_cfb32;
display->dispsw_data = &fbcon_cmap.cfb32;
break;
#endif
default:
display->dispsw = &fbcon_dummy;
break;
}
DPRINTK("EXIT v_ram virt = 0x%8.8lx\n",(unsigned long)display->screen_base);
}
/*
* Set the User Defined Part of the Display
*/
static int virgefb_set_var(struct fb_var_screeninfo *var, int con,
struct fb_info *info)
{
int err, oldxres, oldyres, oldvxres, oldvyres, oldbpp, oldaccel;
DPRINTK("ENTER\n");
if ((err = virgefb_do_fb_set_var(var, con == info->currcon))) {
DPRINTK("EXIT\n");
return(err);
}
if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
oldxres = fb_display[con].var.xres;
oldyres = fb_display[con].var.yres;
oldvxres = fb_display[con].var.xres_virtual;
oldvyres = fb_display[con].var.yres_virtual;
oldbpp = fb_display[con].var.bits_per_pixel;
oldaccel = fb_display[con].var.accel_flags;
fb_display[con].var = *var;
if (oldxres != var->xres || oldyres != var->yres ||
oldvxres != var->xres_virtual ||
oldvyres != var->yres_virtual ||
oldbpp != var->bits_per_pixel ||
oldaccel != var->accel_flags) {
virgefb_set_disp(con, info);
if (fb_info.changevar)
(*fb_info.changevar)(con);
fb_alloc_cmap(&fb_display[con].cmap, 0, 0);
do_install_cmap(con, info);
}
}
var->activate = 0;
DPRINTK("EXIT\n");
return 0;
}
/*
* Get the Colormap
*/
static int virgefb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
struct fb_info *info)
{
DPRINTK("ENTER\n");
if (con == info->currcon) { /* current console? */
DPRINTK("EXIT - console is current console, fb_get_cmap\n");
return(fb_get_cmap(cmap, kspc, fbhw->getcolreg, info));
} else if (fb_display[con].cmap.len) { /* non default colormap? */
DPRINTK("Use console cmap\n");
fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
} else {
DPRINTK("Use default cmap\n");
fb_copy_cmap(fb_default_cmap(fb_display[con].var.bits_per_pixel==8 ? 256 : 16),
cmap, kspc ? 0 : 2);
}
DPRINTK("EXIT\n");
return 0;
}
static struct fb_ops virgefb_ops = {
.owner = THIS_MODULE,
.fb_get_fix = virgefb_get_fix,
.fb_get_var = virgefb_get_var,
.fb_set_var = virgefb_set_var,
.fb_get_cmap = virgefb_get_cmap,
.fb_set_cmap = gen_set_cmap,
.fb_setcolreg = virgefb_setcolreg,
.fb_blank = virgefb_blank,
};
int __init virgefb_setup(char *options)
{
char *this_opt;
fb_info.fontname[0] = '\0';
DPRINTK("ENTER\n");
if (!options || !*options) {
DPRINTK("EXIT\n");
return 0;
}
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!*this_opt)
continue;
if (!strcmp(this_opt, "inverse")) {
virgefb_inverse = 1;
fb_invert_cmaps();
} else if (!strncmp(this_opt, "font:", 5))
strcpy(fb_info.fontname, this_opt+5);
#ifdef FBCON_HAS_CFB8
else if (!strcmp (this_opt, "virge8")){
virgefb_default = virgefb_predefined[VIRGE8_DEFMODE].var;
}
#endif
#ifdef FBCON_HAS_CFB16
else if (!strcmp (this_opt, "virge16")){
virgefb_default = virgefb_predefined[VIRGE16_DEFMODE].var;
}
#endif
#ifdef FBCON_HAS_CFB32
else if (!strcmp (this_opt, "virge32")){
virgefb_default = virgefb_predefined[VIRGE32_DEFMODE].var;
}
#endif
else
virgefb_get_video_mode(this_opt);
}
printk(KERN_INFO "mode : xres=%d, yres=%d, bpp=%d\n", virgefb_default.xres,
virgefb_default.yres, virgefb_default.bits_per_pixel);
DPRINTK("EXIT\n");
return 0;
}
/*
* Get a Video Mode
*/
static int __init virgefb_get_video_mode(const char *name)
{
int i;
DPRINTK("ENTER\n");
for (i = 0; i < NUM_TOTAL_MODES; i++) {
if (!strcmp(name, virgefb_predefined[i].name)) {
virgefb_default = virgefb_predefined[i].var;
DPRINTK("EXIT\n");
return(i);
}
}
/* ++Andre: set virgefb default mode */
/* prefer 16 bit depth, 8 if no 16, if no 8 or 16 use 32 */
#ifdef FBCON_HAS_CFB32
virgefb_default = virgefb_predefined[VIRGE32_DEFMODE].var;
#endif
#ifdef FBCON_HAS_CFB8
virgefb_default = virgefb_predefined[VIRGE8_DEFMODE].var;
#endif
#ifdef FBCON_HAS_CFB16
virgefb_default = virgefb_predefined[VIRGE16_DEFMODE].var;
#endif
DPRINTK("EXIT\n");
return 0;
}
/*
* Initialization
*/
int __init virgefb_init(void)
{
struct virgefb_par par;
unsigned long board_addr, board_size;
struct zorro_dev *z = NULL;
DPRINTK("ENTER\n");
z = zorro_find_device(ZORRO_PROD_PHASE5_CYBERVISION64_3D, NULL);
if (!z)
return -ENODEV;
board_addr = z->resource.start;
if (board_addr < 0x01000000) {
/* board running in Z2 space. This includes the video memory
as well as the S3 register set */
on_zorro2 = 1;
board_size = 0x00400000;
if (!request_mem_region(board_addr, board_size, "S3 ViRGE"))
return -ENOMEM;
v_ram_phys = board_addr;
v_ram = ZTWO_VADDR(v_ram_phys);
mmio_regs_phys = (unsigned long)(board_addr + 0x003c0000);
vgaio_regs = (unsigned char *) ZTWO_VADDR(board_addr + 0x003c0000);
mmio_regs = (unsigned char *)ZTWO_VADDR(mmio_regs_phys);
vcode_switch_base = (unsigned long) ZTWO_VADDR(board_addr + 0x003a0000);
printk(KERN_INFO "CV3D detected running in Z2 mode.\n");
} else {
/* board running in Z3 space. Separate video memory (3 apertures)
and S3 register set */
on_zorro2 = 0;
board_size = 0x01000000;
if (!request_mem_region(board_addr, board_size, "S3 ViRGE"))
return -ENOMEM;
v_ram_phys = board_addr + 0x04000000;
v_ram = (unsigned long)ioremap(v_ram_phys, 0x01000000);
mmio_regs_phys = board_addr + 0x05000000;
vgaio_regs = (unsigned char *)ioremap(board_addr +0x0c000000, 0x00100000); /* includes PCI regs */
mmio_regs = ioremap(mmio_regs_phys, 0x00010000);
vcode_switch_base = (unsigned long)ioremap(board_addr + 0x08000000, 0x1000);
printk(KERN_INFO "CV3D detected running in Z3 mode\n");
}
#if defined (VIRGEFBDEBUG)
DPRINTK("board_addr : 0x%8.8lx\n",board_addr);
DPRINTK("board_size : 0x%8.8lx\n",board_size);
DPRINTK("mmio_regs_phy : 0x%8.8lx\n",mmio_regs_phys);
DPRINTK("v_ram_phys : 0x%8.8lx\n",v_ram_phys);
DPRINTK("vgaio_regs : 0x%8.8lx\n",(unsigned long)vgaio_regs);
DPRINTK("mmio_regs : 0x%8.8lx\n",(unsigned long)mmio_regs);
DPRINTK("v_ram : 0x%8.8lx\n",v_ram);
DPRINTK("vcode sw base : 0x%8.8lx\n",vcode_switch_base);
#endif
fbhw = &virgefb_hw_switch;
strcpy(fb_info.modename, virgefb_name);
fb_info.changevar = NULL;
fb_info.fbops = &virgefb_ops;
fb_info.disp = &disp;
fb_info.currcon = -1;
fb_info.switch_con = &virgefb_switch;
fb_info.updatevar = &virgefb_updatevar;
fb_info.flags = FBINFO_FLAG_DEFAULT;
fbhw->init();
fbhw->decode_var(&virgefb_default, &par);
fbhw->encode_var(&virgefb_default, &par);
virgefb_do_fb_set_var(&virgefb_default, 1);
virgefb_get_var(&fb_display[0].var, -1, &fb_info);
virgefb_set_disp(-1, &fb_info);
do_install_cmap(0, &fb_info);
if (register_framebuffer(&fb_info) < 0) {
#warning release resources
printk(KERN_ERR "virgefb.c: register_framebuffer failed\n");
DPRINTK("EXIT\n");
goto out_unmap;
}
printk(KERN_INFO "fb%d: %s frame buffer device, using %ldK of video memory\n",
fb_info.node, fb_info.modename, v_ram_size>>10);
/* TODO: This driver cannot be unloaded yet */
DPRINTK("EXIT\n");
return 0;
out_unmap:
if (board_addr >= 0x01000000) {
if (v_ram)
iounmap((void*)v_ram);
if (vgaio_regs)
iounmap(vgaio_regs);
if (mmio_regs)
iounmap(mmio_regs);
if (vcode_switch_base)
iounmap((void*)vcode_switch_base);
v_ram = vcode_switch_base = 0;
vgaio_regs = mmio_regs = NULL;
}
return -EINVAL;
}
static int virgefb_switch(int con, struct fb_info *info)
{
DPRINTK("ENTER\n");
/* Do we have to save the colormap? */
if (fb_display[info->currcon].cmap.len)
fb_get_cmap(&fb_display[info->currcon].cmap, 1,
fbhw->getcolreg, info);
virgefb_do_fb_set_var(&fb_display[con].var, 1);
info->currcon = con;
/* Install new colormap */
do_install_cmap(con, info);
DPRINTK("EXIT\n");
return 0;
}
/*
* Update the `var' structure (called by fbcon.c)
*
* This call looks only at yoffset and the FB_VMODE_YWRAP flag in `var'.
* Since it's called by a kernel driver, no range checking is done.
*/
static int virgefb_updatevar(int con, struct fb_info *info)
{
DPRINTK("ENTER\n");
return 0;
DPRINTK("EXIT\n");
}
/*
* Blank the display.
*/
static int virgefb_blank(int blank, struct fb_info *info)
{
DPRINTK("ENTER\n");
fbhw->blank(blank);
DPRINTK("EXIT\n");
return 0;
}
/*
* Text console acceleration
*/
#ifdef FBCON_HAS_CFB8
static void fbcon_virge8_bmove(struct display *p, int sy, int sx, int dy,
int dx, int height, int width)
{
sx *= 8; dx *= 8; width *= 8;
virgefb_BitBLT((u_short)sx, (u_short)(sy*fontheight(p)), (u_short)dx,
(u_short)(dy*fontheight(p)), (u_short)width,
(u_short)(height*fontheight(p)), (u_short)p->next_line, 8);
}
static void fbcon_virge8_clear(struct vc_data *conp, struct display *p, int sy,
int sx, int height, int width)
{
unsigned char bg;
sx *= 8; width *= 8;
bg = attr_bgcol_ec(p,conp);
virgefb_RectFill((u_short)sx, (u_short)(sy*fontheight(p)),
(u_short)width, (u_short)(height*fontheight(p)),
(u_short)bg, (u_short)p->next_line, 8);
}
static void fbcon_virge8_putc(struct vc_data *conp, struct display *p, int c, int yy,
int xx)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb8_putc(conp, p, c, yy, xx);
}
static void fbcon_virge8_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count, int yy, int xx)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb8_putcs(conp, p, s, count, yy, xx);
}
static void fbcon_virge8_revc(struct display *p, int xx, int yy)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb8_revc(p, xx, yy);
}
static void fbcon_virge8_clear_margins(struct vc_data *conp, struct display *p,
int bottom_only)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb8_clear_margins(conp, p, bottom_only);
}
static struct display_switch fbcon_virge8 = {
.setup = fbcon_cfb8_setup,
.bmove = fbcon_virge8_bmove,
.clear = fbcon_virge8_clear,
.putc = fbcon_virge8_putc,
.putcs = fbcon_virge8_putcs,
.revc = fbcon_virge8_revc,
.clear_margins = fbcon_virge8_clear_margins,
.fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef FBCON_HAS_CFB16
static void fbcon_virge16_bmove(struct display *p, int sy, int sx, int dy,
int dx, int height, int width)
{
sx *= 8; dx *= 8; width *= 8;
virgefb_BitBLT((u_short)sx, (u_short)(sy*fontheight(p)), (u_short)dx,
(u_short)(dy*fontheight(p)), (u_short)width,
(u_short)(height*fontheight(p)), (u_short)p->next_line, 16);
}
static void fbcon_virge16_clear(struct vc_data *conp, struct display *p, int sy,
int sx, int height, int width)
{
unsigned char bg;
sx *= 8; width *= 8;
bg = attr_bgcol_ec(p,conp);
virgefb_RectFill((u_short)sx, (u_short)(sy*fontheight(p)),
(u_short)width, (u_short)(height*fontheight(p)),
(u_short)bg, (u_short)p->next_line, 16);
}
static void fbcon_virge16_putc(struct vc_data *conp, struct display *p, int c, int yy,
int xx)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb16_putc(conp, p, c, yy, xx);
}
static void fbcon_virge16_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count, int yy, int xx)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb16_putcs(conp, p, s, count, yy, xx);
}
static void fbcon_virge16_revc(struct display *p, int xx, int yy)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb16_revc(p, xx, yy);
}
static void fbcon_virge16_clear_margins(struct vc_data *conp, struct display *p,
int bottom_only)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb16_clear_margins(conp, p, bottom_only);
}
static struct display_switch fbcon_virge16 = {
.setup = fbcon_cfb16_setup,
.bmove = fbcon_virge16_bmove,
.clear = fbcon_virge16_clear,
.putc = fbcon_virge16_putc,
.putcs = fbcon_virge16_putcs,
.revc = fbcon_virge16_revc,
.clear_margins = fbcon_virge16_clear_margins,
.fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef FBCON_HAS_CFB32
static void fbcon_virge32_bmove(struct display *p, int sy, int sx, int dy,
int dx, int height, int width)
{
sx *= 16; dx *= 16; width *= 16; /* doubled these values to do 32 bit blit */
virgefb_BitBLT((u_short)sx, (u_short)(sy*fontheight(p)), (u_short)dx,
(u_short)(dy*fontheight(p)), (u_short)width,
(u_short)(height*fontheight(p)), (u_short)p->next_line, 16);
}
static void fbcon_virge32_clear(struct vc_data *conp, struct display *p, int sy,
int sx, int height, int width)
{
unsigned char bg;
sx *= 16; width *= 16; /* doubled these values to do 32 bit blit */
bg = attr_bgcol_ec(p,conp);
virgefb_RectFill((u_short)sx, (u_short)(sy*fontheight(p)),
(u_short)width, (u_short)(height*fontheight(p)),
(u_short)bg, (u_short)p->next_line, 16);
}
static void fbcon_virge32_putc(struct vc_data *conp, struct display *p, int c, int yy,
int xx)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb32_putc(conp, p, c, yy, xx);
}
static void fbcon_virge32_putcs(struct vc_data *conp, struct display *p,
const unsigned short *s, int count, int yy, int xx)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb32_putcs(conp, p, s, count, yy, xx);
}
static void fbcon_virge32_revc(struct display *p, int xx, int yy)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb32_revc(p, xx, yy);
}
static void fbcon_virge32_clear_margins(struct vc_data *conp, struct display *p,
int bottom_only)
{
if (blit_maybe_busy)
virgefb_wait_for_idle();
fbcon_cfb32_clear_margins(conp, p, bottom_only);
}
static struct display_switch fbcon_virge32 = {
.setup = fbcon_cfb32_setup,
.bmove = fbcon_virge32_bmove,
.clear = fbcon_virge32_clear,
.putc = fbcon_virge32_putc,
.putcs = fbcon_virge32_putcs,
.revc = fbcon_virge32_revc,
.clear_margins = fbcon_virge32_clear_margins,
.fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
};
#endif
#ifdef MODULE
MODULE_LICENSE("GPL");
int init_module(void)
{
return virgefb_init();
}
#endif /* MODULE */
static int cv3d_has_4mb(void)
{
/* cyberfb version didn't work, neither does this (not reliably)
forced to return 4MB */
#if 0
volatile unsigned long *t0, *t2;
#endif
DPRINTK("ENTER\n");
#if 0
/* write patterns in memory and test if they can be read */
t0 = (volatile unsigned long *)v_ram;
t2 = (volatile unsigned long *)(v_ram + 0x00200000);
*t0 = 0x87654321;
*t2 = 0x12345678;
if (*t0 != 0x87654321) {
/* read of first location failed */
DPRINTK("EXIT - 0MB !\n");
return 0;
}
if (*t2 == 0x87654321) {
/* should read 0x12345678 if 4MB */
DPRINTK("EXIT - 2MB(a) \n");
return 0;
}
if (*t2 != 0x12345678) {
/* upper 2MB read back match failed */
DPRINTK("EXIT - 2MB(b)\n");
return 0;
}
/* may have 4MB */
*t2 = 0xAAAAAAAA;
if(*t2 != 0xAAAAAAAA) {
/* upper 2MB read back match failed */
DPRINTK("EXIT - 2MB(c)\n");
return 0;
}
*t2 = 0x55555555;
if(*t2 != 0x55555555) {
/* upper 2MB read back match failed */
DPRINTK("EXIT - 2MB(d)\n");
return 0;
}
#endif
DPRINTK("EXIT - 4MB\n");
return 1;
}
/*
* Computes M, N, and R pll params for freq arg.
* Returns 16 bits - hi 0MMMMMM lo 0RRNNNNN
*/
#define REFCLOCK 14318000
static unsigned short virgefb_compute_clock(unsigned long freq)
{
unsigned char m, n, r, rpwr;
unsigned long diff, ftry, save = ~0UL;
unsigned short mnr;
DPRINTK("ENTER\n");
for (r = 0, rpwr = 1 ; r < 4 ; r++, rpwr *= 2) {
if ((135000000 <= (rpwr * freq)) && ((rpwr * freq) <= 270000000)) {
for (n = 1 ; n < 32 ; n++) {
m = ((freq * (n + 2) * rpwr)/REFCLOCK) - 2;
if (m == 0 || m >127)
break;
ftry = ((REFCLOCK / (n + 2)) * (m + 2)) / rpwr;
if (ftry > freq)
diff = ftry - freq;
else
diff = freq - ftry;
if (diff < save) {
save = diff;
mnr = (m << 8) | (r<<5) | (n & 0x7f);
}
}
}
}
if (save == ~0UL)
printk("Can't compute clock PLL values for %ld Hz clock\n", freq);
DPRINTK("EXIT\n");
return(mnr);
}
static void virgefb_load_video_mode(struct fb_var_screeninfo *video_mode)
{
unsigned char lace, dblscan, tmp;
unsigned short mnr;
unsigned short HT, HDE, HBS, HBW, HSS, HSW;
unsigned short VT, VDE, VBS, VBW, VSS, VSW;
unsigned short SCO;
int cr11;
int cr67;
int hmul;
int xres, xres_virtual, hfront, hsync, hback;
int yres, vfront, vsync, vback;
int bpp;
int i;
long freq;
DPRINTK("ENTER : %dx%d-%d\n",video_mode->xres, video_mode->yres,
video_mode->bits_per_pixel);
bpp = video_mode->bits_per_pixel;
xres = video_mode->xres;
xres_virtual = video_mode->xres_virtual;
hfront = video_mode->right_margin;
hsync = video_mode->hsync_len;
hback = video_mode->left_margin;
lace = 0;
dblscan = 0;
if (video_mode->vmode & FB_VMODE_DOUBLE) {
yres = video_mode->yres * 2;
vfront = video_mode->lower_margin * 2;
vsync = video_mode->vsync_len * 2;
vback = video_mode->upper_margin * 2;
dblscan = 1;
} else if (video_mode->vmode & FB_VMODE_INTERLACED) {
yres = (video_mode->yres + 1) / 2;
vfront = (video_mode->lower_margin + 1) / 2;
vsync = (video_mode->vsync_len + 1) / 2;
vback = (video_mode->upper_margin + 1) / 2;
lace = 1;
} else {
yres = video_mode->yres;
vfront = video_mode->lower_margin;
vsync = video_mode->vsync_len;
vback = video_mode->upper_margin;
}
switch (bpp) {
case 8:
video_mode->red.offset = 0;
video_mode->green.offset = 0;
video_mode->blue.offset = 0;
video_mode->transp.offset = 0;
video_mode->red.length = 8;
video_mode->green.length = 8;
video_mode->blue.length = 8;
video_mode->transp.length = 0;
hmul = 1;
cr67 = 0x00;
SCO = xres_virtual / 8;
break;
case 16:
video_mode->red.offset = 11;
video_mode->green.offset = 5;
video_mode->blue.offset = 0;
video_mode->transp.offset = 0;
video_mode->red.length = 5;
video_mode->green.length = 6;
video_mode->blue.length = 5;
video_mode->transp.length = 0;
hmul = 2;
cr67 = 0x50;
SCO = xres_virtual / 4;
break;
case 32:
video_mode->red.offset = 16;
video_mode->green.offset = 8;
video_mode->blue.offset = 0;
video_mode->transp.offset = 24;
video_mode->red.length = 8;
video_mode->green.length = 8;
video_mode->blue.length = 8;
video_mode->transp.length = 8;
hmul = 1;
cr67 = 0xd0;
SCO = xres_virtual / 2;
break;
}
HT = (((xres + hfront + hsync + hback) / 8) * hmul) - 5;
HDE = ((xres / 8) * hmul) - 1;
HBS = (xres / 8) * hmul;
HSS = ((xres + hfront) / 8) * hmul;
HSW = (hsync / 8) * hmul;
HBW = (((hfront + hsync + hback) / 8) * hmul) - 2;
VT = yres + vfront + vsync + vback - 2;
VDE = yres - 1;
VBS = yres - 1;
VSS = yres + vfront;
VSW = vsync;
VBW = vfront + vsync + vback - 2;
#ifdef VIRGEFBDEBUG
DPRINTK("HDE : 0x%4.4x, %4.4d\n", HDE, HDE);
DPRINTK("HBS : 0x%4.4x, %4.4d\n", HBS, HBS);
DPRINTK("HSS : 0x%4.4x, %4.4d\n", HSS, HSS);
DPRINTK("HSW : 0x%4.4x, %4.4d\n", HSW, HSW);
DPRINTK("HBW : 0x%4.4x, %4.4d\n", HBW, HBW);
DPRINTK("HSS + HSW : 0x%4.4x, %4.4d\n", HSS+HSW, HSS+HSW);
DPRINTK("HBS + HBW : 0x%4.4x, %4.4d\n", HBS+HBW, HBS+HBW);
DPRINTK("HT : 0x%4.4x, %4.4d\n", HT, HT);
DPRINTK("VDE : 0x%4.4x, %4.4d\n", VDE, VDE);
DPRINTK("VBS : 0x%4.4x, %4.4d\n", VBS, VBS);
DPRINTK("VSS : 0x%4.4x, %4.4d\n", VSS, VSS);
DPRINTK("VSW : 0x%4.4x, %4.4d\n", VSW, VSW);
DPRINTK("VBW : 0x%4.4x, %4.4d\n", VBW, VBW);
DPRINTK("VT : 0x%4.4x, %4.4d\n", VT, VT);
#endif
/* turn gfx off, don't mess up the display */
gfx_on_off(1);
/* H and V sync polarity */
tmp = rb_mmio(GREG_MISC_OUTPUT_R) & 0x2f; /* colour, ram enable, clk sr12/s13 sel */
if (!(video_mode->sync & FB_SYNC_HOR_HIGH_ACT))
tmp |= 0x40; /* neg H sync polarity */
if (!(video_mode->sync & FB_SYNC_VERT_HIGH_ACT))
tmp |= 0x80; /* neg V sync polarity */
tmp |= 0x0c; /* clk from sr12/sr13 */
wb_mmio(GREG_MISC_OUTPUT_W, tmp);
/* clocks */
wseq(SEQ_ID_BUS_REQ_CNTL, 0xc0); /* 2 clk mem wr and /RAS1 */
wseq(SEQ_ID_CLKSYN_CNTL_2, 0x80); /* b7 is 2 mem clk wr */
mnr = virgefb_compute_clock(MEMCLOCK);
DPRINTK("mem clock %d, m %d, n %d, r %d.\n", MEMCLOCK, ((mnr>>8)&0x7f), (mnr&0x1f), ((mnr >> 5)&0x03));
wseq(SEQ_ID_MCLK_LO, (mnr & 0x7f));
wseq(SEQ_ID_MCLK_HI, ((mnr & 0x7f00) >> 8));
freq = (1000000000 / video_mode->pixclock) * 1000; /* pixclock is in ps ... convert to Hz */
mnr = virgefb_compute_clock(freq);
DPRINTK("dot clock %ld, m %d, n %d, r %d.\n", freq, ((mnr>>8)&0x7f), (mnr&0x1f), ((mnr>>5)&0x03));
wseq(SEQ_ID_DCLK_LO, (mnr & 0x7f));
wseq(SEQ_ID_DCLK_HI, ((mnr & 0x7f00) >> 8));
wseq(SEQ_ID_CLKSYN_CNTL_2, 0xa0);
wseq(SEQ_ID_CLKSYN_CNTL_2, 0x80);
udelay(100);
/* load display parameters into board */
/* not sure about sync and blanking extensions bits in cr5d and cr5 */
wcrt(CRT_ID_EXT_HOR_OVF, /* 0x5d */
((HT & 0x100) ? 0x01 : 0x00) |
((HDE & 0x100) ? 0x02 : 0x00) |
((HBS & 0x100) ? 0x04 : 0x00) |
/* (((HBS + HBW) & 0x40) ? 0x08 : 0x00) | */
((HSS & 0x100) ? 0x10 : 0x00) |
/* (((HSS + HSW) & 0x20) ? 0x20 : 0x00) | */
((HSW >= 0x20) ? 0x20 : 0x00) |
(((HT-5) & 0x100) ? 0x40 : 0x00));
wcrt(CRT_ID_EXT_VER_OVF, /* 0x5e */
((VT & 0x400) ? 0x01 : 0x00) |
((VDE & 0x400) ? 0x02 : 0x00) |
((VBS & 0x400) ? 0x04 : 0x00) |
((VSS & 0x400) ? 0x10 : 0x00) |
0x40); /* line compare */
wcrt(CRT_ID_START_VER_RETR, VSS);
cr11 = rcrt(CRT_ID_END_VER_RETR) | 0x20; /* vert interrupt flag */
wcrt(CRT_ID_END_VER_RETR, ((cr11 & 0x20) | ((VSS + VSW) & 0x0f))); /* keeps vert irq enable state, also has unlock bit cr0 to 7 */
wcrt(CRT_ID_VER_DISP_ENA_END, VDE);
wcrt(CRT_ID_START_VER_BLANK, VBS);
wcrt(CRT_ID_END_VER_BLANK, VBS + VBW); /* might be +/- 1 out */
wcrt(CRT_ID_HOR_TOTAL, HT);
wcrt(CRT_ID_DISPLAY_FIFO, HT - 5);
wcrt(CRT_ID_BACKWAD_COMP_3, 0x10); /* enable display fifo */
wcrt(CRT_ID_HOR_DISP_ENA_END, HDE);
wcrt(CRT_ID_START_HOR_BLANK , HBS);
wcrt(CRT_ID_END_HOR_BLANK, (HBS + HBW) & 0x1f);
wcrt(CRT_ID_START_HOR_RETR, HSS);
wcrt(CRT_ID_END_HOR_RETR, /* cr5 */
((HSS + HSW) & 0x1f) |
(((HBS + HBW) & 0x20) ? 0x80 : 0x00));
wcrt(CRT_ID_VER_TOTAL, VT);
wcrt(CRT_ID_OVERFLOW,
((VT & 0x100) ? 0x01 : 0x00) |
((VDE & 0x100) ? 0x02 : 0x00) |
((VSS & 0x100) ? 0x04 : 0x00) |
((VBS & 0x100) ? 0x08 : 0x00) |
0x10 |
((VT & 0x200) ? 0x20 : 0x00) |
((VDE & 0x200) ? 0x40 : 0x00) |
((VSS & 0x200) ? 0x80 : 0x00));
wcrt(CRT_ID_MAX_SCAN_LINE,
(dblscan ? 0x80 : 0x00) |
0x40 |
((VBS & 0x200) ? 0x20 : 0x00));
wcrt(CRT_ID_LINE_COMPARE, 0xff);
wcrt(CRT_ID_LACE_RETR_START, HT / 2); /* (HT-5)/2 ? */
wcrt(CRT_ID_LACE_CONTROL, (lace ? 0x20 : 0x00));
wcrt(CRT_ID_SCREEN_OFFSET, SCO);
wcrt(CRT_ID_EXT_SYS_CNTL_2, (SCO >> 4) & 0x30 );
/* wait for vert sync before cr67 update */
for (i=0; i < 10000; i++) {
udelay(10);
mb();
if (rb_mmio(GREG_INPUT_STATUS1_R) & 0x08)
break;
}
wl_mmio(0x8200, 0x0000c000); /* fifo control (0x00110400 ?) */
wcrt(CRT_ID_EXT_MISC_CNTL_2, cr67);
/* enable video */
tmp = rb_mmio(ACT_ADDRESS_RESET);
wb_mmio(ACT_ADDRESS_W, ((bpp == 8) ? 0x20 : 0x00)); /* set b5, ENB PLT in attr idx reg) */
tmp = rb_mmio(ACT_ADDRESS_RESET);
/* turn gfx on again */
gfx_on_off(0);
/* pass-through */
SetVSwitch(1); /* cv3d */
DUMP;
DPRINTK("EXIT\n");
}
static inline void gfx_on_off(int toggle)
{
unsigned char tmp;
DPRINTK("ENTER gfx %s\n", (toggle ? "off" : "on"));
toggle = (toggle & 0x01) << 5;
tmp = rseq(SEQ_ID_CLOCKING_MODE) & (~(0x01 << 5));
wseq(SEQ_ID_CLOCKING_MODE, tmp | toggle);
DPRINTK("EXIT\n");
}
#if defined (VIRGEFBDUMP)
/*
* Dump board registers
*/
static void cv64_dump(void)
{
int i;
u8 c, b;
u16 w;
u32 l;
/* crt, seq, gfx and atr regs */
SelectMMIO;
printk("\n");
for (i = 0; i <= 0x6f; i++) {
wb_mmio(CRT_ADDRESS, i);
printk("crt idx : 0x%2.2x : 0x%2.2x\n", i, rb_mmio(CRT_ADDRESS_R));
}
for (i = 0; i <= 0x1c; i++) {
wb_mmio(SEQ_ADDRESS, i);
printk("seq idx : 0x%2.2x : 0x%2.2x\n", i, rb_mmio(SEQ_ADDRESS_R));
}
for (i = 0; i <= 8; i++) {
wb_mmio(GCT_ADDRESS, i);
printk("gfx idx : 0x%2.2x : 0x%2.2x\n", i, rb_mmio(GCT_ADDRESS_R));
}
for (i = 0; i <= 0x14; i++) {
c = rb_mmio(ACT_ADDRESS_RESET);
wb_mmio(ACT_ADDRESS_W, i);
printk("atr idx : 0x%2.2x : 0x%2.2x\n", i, rb_mmio(ACT_ADDRESS_R));
}
/* re-enable video access to palette */
c = rb_mmio(ACT_ADDRESS_RESET);
udelay(10);
wb_mmio(ACT_ADDRESS_W, 0x20);
c = rb_mmio(ACT_ADDRESS_RESET);
udelay(10);
/* general regs */
printk("0x3cc(w 0x3c2) : 0x%2.2x\n", rb_mmio(0x3cc)); /* GREG_MISC_OUTPUT READ */
printk("0x3c2(-------) : 0x%2.2x\n", rb_mmio(0x3c2)); /* GREG_INPUT_STATUS 0 READ */
printk("0x3c3(w 0x3c3) : 0x%2.2x\n", rb_vgaio(0x3c3)); /* GREG_VIDEO_SUBS_ENABLE */
printk("0x3ca(w 0x3da) : 0x%2.2x\n", rb_vgaio(0x3ca)); /* GREG_FEATURE_CONTROL read */
printk("0x3da(-------) : 0x%2.2x\n", rb_mmio(0x3da)); /* GREG_INPUT_STATUS 1 READ */
/* engine regs */
for (i = 0x8180; i <= 0x8200; i = i + 4)
printk("0x%8.8x : 0x%8.8x\n", i, rl_mmio(i));
i = 0x8504;
printk("0x%8.8x : 0x%8.8x\n", i, rl_mmio(i));
i = 0x850c;
printk("0x%8.8x : 0x%8.8x\n", i, rl_mmio(i));
for (i = 0xa4d4; i <= 0xa50c; i = i + 4)
printk("0x%8.8x : 0x%8.8x\n", i, rl_mmio(i));
/* PCI regs */
SelectCFG;
for (c = 0; c < 0x08; c = c + 2) {
w = (*((u16 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 2)));
printk("pci 0x%2.2x : 0x%4.4x\n", c, w);
}
c = 8;
l = (*((u32 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)))));
printk("pci 0x%2.2x : 0x%8.8x\n", c, l);
c = 0x0d;
b = (*((u8 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 3)));
printk("pci 0x%2.2x : 0x%2.2x\n", c, b);
c = 0x10;
l = (*((u32 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)))));
printk("pci 0x%2.2x : 0x%8.8x\n", c, l);
c = 0x30;
l = (*((u32 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)))));
printk("pci 0x%2.2x : 0x%8.8x\n", c, l);
c = 0x3c;
b = (*((u8 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 3)));
printk("pci 0x%2.2x : 0x%2.2x\n", c, b);
c = 0x3d;
b = (*((u8 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 3)));
printk("pci 0x%2.2x : 0x%2.2x\n", c, b);
c = 0x3e;
w = (*((u16 *)((u32)(vgaio_regs + c + (on_zorro2 ? 0 : 0x000e0000)) ^ 2)));
printk("pci 0x%2.2x : 0x%4.4x\n", c, w);
SelectMMIO;
}
#endif
