/*
*
* Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450
*
* (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
*
*/
#ifndef __MATROXFB_H__
#define __MATROXFB_H__
/* general, but fairly heavy, debugging */
#undef MATROXFB_DEBUG
/* heavy debugging: */
/* -- logs putc[s], so everytime a char is displayed, it's logged */
#undef MATROXFB_DEBUG_HEAVY
/* This one _could_ cause infinite loops */
/* It _does_ cause lots and lots of messages during idle loops */
#undef MATROXFB_DEBUG_LOOP
/* Debug register calls, too? */
#undef MATROXFB_DEBUG_REG
/* Guard accelerator accesses with spin_lock_irqsave... */
#undef MATROXFB_USE_SPINLOCKS
#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/fb.h>
#include <linux/console.h>
#include <linux/selection.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/kd.h>
#include <asm/io.h>
#include <asm/unaligned.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#if defined(CONFIG_PPC_PMAC)
#include <asm/prom.h>
#include <asm/pci-bridge.h>
#include "../macmodes.h"
#endif
/* always compile support for 32MB... It cost almost nothing */
#define CONFIG_FB_MATROX_32MB
#ifdef MATROXFB_DEBUG
#define DEBUG
#define DBG(x) printk(KERN_DEBUG "matroxfb: %s\n", (x));
#ifdef MATROXFB_DEBUG_HEAVY
#define DBG_HEAVY(x) DBG(x)
#else /* MATROXFB_DEBUG_HEAVY */
#define DBG_HEAVY(x) /* DBG_HEAVY */
#endif /* MATROXFB_DEBUG_HEAVY */
#ifdef MATROXFB_DEBUG_LOOP
#define DBG_LOOP(x) DBG(x)
#else /* MATROXFB_DEBUG_LOOP */
#define DBG_LOOP(x) /* DBG_LOOP */
#endif /* MATROXFB_DEBUG_LOOP */
#ifdef MATROXFB_DEBUG_REG
#define DBG_REG(x) DBG(x)
#else /* MATROXFB_DEBUG_REG */
#define DBG_REG(x) /* DBG_REG */
#endif /* MATROXFB_DEBUG_REG */
#else /* MATROXFB_DEBUG */
#define DBG(x) /* DBG */
#define DBG_HEAVY(x) /* DBG_HEAVY */
#define DBG_REG(x) /* DBG_REG */
#define DBG_LOOP(x) /* DBG_LOOP */
#endif /* MATROXFB_DEBUG */
#ifdef DEBUG
#define dprintk(X...) printk(X)
#else
#define dprintk(X...)
#endif
#ifndef PCI_SS_VENDOR_ID_SIEMENS_NIXDORF
#define PCI_SS_VENDOR_ID_SIEMENS_NIXDORF 0x110A
#endif
#ifndef PCI_SS_VENDOR_ID_MATROX
#define PCI_SS_VENDOR_ID_MATROX PCI_VENDOR_ID_MATROX
#endif
#ifndef PCI_SS_ID_MATROX_PRODUCTIVA_G100_AGP
#define PCI_SS_ID_MATROX_GENERIC 0xFF00
#define PCI_SS_ID_MATROX_PRODUCTIVA_G100_AGP 0xFF01
#define PCI_SS_ID_MATROX_MYSTIQUE_G200_AGP 0xFF02
#define PCI_SS_ID_MATROX_MILLENIUM_G200_AGP 0xFF03
#define PCI_SS_ID_MATROX_MARVEL_G200_AGP 0xFF04
#define PCI_SS_ID_MATROX_MGA_G100_PCI 0xFF05
#define PCI_SS_ID_MATROX_MGA_G100_AGP 0x1001
#define PCI_SS_ID_MATROX_MILLENNIUM_G400_MAX_AGP 0x2179
#define PCI_SS_ID_SIEMENS_MGA_G100_AGP 0x001E /* 30 */
#define PCI_SS_ID_SIEMENS_MGA_G200_AGP 0x0032 /* 50 */
#endif
#define MX_VISUAL_TRUECOLOR FB_VISUAL_DIRECTCOLOR
#define MX_VISUAL_DIRECTCOLOR FB_VISUAL_TRUECOLOR
#define MX_VISUAL_PSEUDOCOLOR FB_VISUAL_PSEUDOCOLOR
#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
/* G-series and Mystique have (almost) same DAC */
#undef NEED_DAC1064
#if defined(CONFIG_FB_MATROX_MYSTIQUE) || defined(CONFIG_FB_MATROX_G)
#define NEED_DAC1064 1
#endif
typedef struct {
void __iomem* vaddr;
} vaddr_t;
static inline unsigned int mga_readb(vaddr_t va, unsigned int offs) {
return readb(va.vaddr + offs);
}
static inline void mga_writeb(vaddr_t va, unsigned int offs, u_int8_t value) {
writeb(value, va.vaddr + offs);
}
static inline void mga_writew(vaddr_t va, unsigned int offs, u_int16_t value) {
writew(value, va.vaddr + offs);
}
static inline u_int32_t mga_readl(vaddr_t va, unsigned int offs) {
return readl(va.vaddr + offs);
}
static inline void mga_writel(vaddr_t va, unsigned int offs, u_int32_t value) {
writel(value, va.vaddr + offs);
}
static inline void mga_memcpy_toio(vaddr_t va, const void* src, int len) {
#if defined(__alpha__) || defined(__i386__) || defined(__x86_64__)
/*
* memcpy_toio works for us if:
* (1) Copies data as 32bit quantities, not byte after byte,
* (2) Performs LE ordered stores, and
* (3) It copes with unaligned source (destination is guaranteed to be page
* aligned and length is guaranteed to be multiple of 4).
*/
memcpy_toio(va.vaddr, src, len);
#else
u_int32_t __iomem* addr = va.vaddr;
if ((unsigned long)src & 3) {
while (len >= 4) {
fb_writel(get_unaligned((u32 *)src), addr);
addr++;
len -= 4;
src += 4;
}
} else {
while (len >= 4) {
fb_writel(*(u32 *)src, addr);
addr++;
len -= 4;
src += 4;
}
}
#endif
}
static inline void vaddr_add(vaddr_t* va, unsigned long offs) {
va->vaddr += offs;
}
static inline void __iomem* vaddr_va(vaddr_t va) {
return va.vaddr;
}
#define MGA_IOREMAP_NORMAL 0
#define MGA_IOREMAP_NOCACHE 1
#define MGA_IOREMAP_FB MGA_IOREMAP_NOCACHE
#define MGA_IOREMAP_MMIO MGA_IOREMAP_NOCACHE
static inline int mga_ioremap(unsigned long phys, unsigned long size, int flags, vaddr_t* virt) {
if (flags & MGA_IOREMAP_NOCACHE)
virt->vaddr = ioremap_nocache(phys, size);
else
virt->vaddr = ioremap(phys, size);
return (virt->vaddr == 0); /* 0, !0... 0, error_code in future */
}
static inline void mga_iounmap(vaddr_t va) {
iounmap(va.vaddr);
}
struct my_timming {
unsigned int pixclock;
int mnp;
unsigned int crtc;
unsigned int HDisplay;
unsigned int HSyncStart;
unsigned int HSyncEnd;
unsigned int HTotal;
unsigned int VDisplay;
unsigned int VSyncStart;
unsigned int VSyncEnd;
unsigned int VTotal;
unsigned int sync;
int dblscan;
int interlaced;
unsigned int delay; /* CRTC delay */
};
enum { M_SYSTEM_PLL, M_PIXEL_PLL_A, M_PIXEL_PLL_B, M_PIXEL_PLL_C, M_VIDEO_PLL };
struct matrox_pll_cache {
unsigned int valid;
struct {
unsigned int mnp_key;
unsigned int mnp_value;
} data[4];
};
struct matrox_pll_limits {
unsigned int vcomin;
unsigned int vcomax;
};
struct matrox_pll_features {
unsigned int vco_freq_min;
unsigned int ref_freq;
unsigned int feed_div_min;
unsigned int feed_div_max;
unsigned int in_div_min;
unsigned int in_div_max;
unsigned int post_shift_max;
};
struct matroxfb_par
{
unsigned int final_bppShift;
unsigned int cmap_len;
struct {
unsigned int bytes;
unsigned int pixels;
unsigned int chunks;
} ydstorg;
};
struct matrox_fb_info;
struct matrox_DAC1064_features {
u_int8_t xvrefctrl;
u_int8_t xmiscctrl;
};
/* current hardware status */
struct mavenregs {
u_int8_t regs[256];
int mode;
int vlines;
int xtal;
int fv;
u_int16_t htotal;
u_int16_t hcorr;
};
struct matrox_crtc2 {
u_int32_t ctl;
};
struct matrox_hw_state {
u_int32_t MXoptionReg;
unsigned char DACclk[6];
unsigned char DACreg[80];
unsigned char MiscOutReg;
unsigned char DACpal[768];
unsigned char CRTC[25];
unsigned char CRTCEXT[9];
unsigned char SEQ[5];
/* unused for MGA mode, but who knows... */
unsigned char GCTL[9];
/* unused for MGA mode, but who knows... */
unsigned char ATTR[21];
/* TVOut only */
struct mavenregs maven;
struct matrox_crtc2 crtc2;
};
struct matrox_accel_data {
#ifdef CONFIG_FB_MATROX_MILLENIUM
unsigned char ramdac_rev;
#endif
u_int32_t m_dwg_rect;
u_int32_t m_opmode;
};
struct v4l2_queryctrl;
struct v4l2_control;
struct matrox_altout {
const char *name;
int (*compute)(void* altout_dev, struct my_timming* input);
int (*program)(void* altout_dev);
int (*start)(void* altout_dev);
int (*verifymode)(void* altout_dev, u_int32_t mode);
int (*getqueryctrl)(void* altout_dev,
struct v4l2_queryctrl* ctrl);
int (*getctrl)(void* altout_dev,
struct v4l2_control* ctrl);
int (*setctrl)(void* altout_dev,
struct v4l2_control* ctrl);
};
#define MATROXFB_SRC_NONE 0
#define MATROXFB_SRC_CRTC1 1
#define MATROXFB_SRC_CRTC2 2
enum mga_chip { MGA_2064, MGA_2164, MGA_1064, MGA_1164, MGA_G100, MGA_G200, MGA_G400, MGA_G450, MGA_G550 };
struct matrox_bios {
unsigned int bios_valid : 1;
unsigned int pins_len;
unsigned char pins[128];
struct {
unsigned char vMaj, vMin, vRev;
} version;
struct {
unsigned char state, tvout;
} output;
};
struct matrox_switch;
struct matroxfb_driver;
struct matroxfb_dh_fb_info;
struct matrox_vsync {
wait_queue_head_t wait;
unsigned int cnt;
};
struct matrox_fb_info {
struct fb_info fbcon;
struct list_head next_fb;
int dead;
int initialized;
unsigned int usecount;
unsigned int userusecount;
unsigned long irq_flags;
struct matroxfb_par curr;
struct matrox_hw_state hw;
struct matrox_accel_data accel;
struct pci_dev* pcidev;
struct {
struct matrox_vsync vsync;
unsigned int pixclock;
int mnp;
int panpos;
} crtc1;
struct {
struct matrox_vsync vsync;
unsigned int pixclock;
int mnp;
struct matroxfb_dh_fb_info* info;
struct rw_semaphore lock;
} crtc2;
struct {
struct rw_semaphore lock;
struct {
int brightness, contrast, saturation, hue, gamma;
int testout, deflicker;
} tvo_params;
} altout;
#define MATROXFB_MAX_OUTPUTS 3
struct {
unsigned int src;
struct matrox_altout* output;
void* data;
unsigned int mode;
unsigned int default_src;
} outputs[MATROXFB_MAX_OUTPUTS];
#define MATROXFB_MAX_FB_DRIVERS 5
struct matroxfb_driver* (drivers[MATROXFB_MAX_FB_DRIVERS]);
void* (drivers_data[MATROXFB_MAX_FB_DRIVERS]);
unsigned int drivers_count;
struct {
unsigned long base; /* physical */
vaddr_t vbase; /* CPU view */
unsigned int len;
unsigned int len_usable;
unsigned int len_maximum;
} video;
struct {
unsigned long base; /* physical */
vaddr_t vbase; /* CPU view */
unsigned int len;
} mmio;
unsigned int max_pixel_clock;
unsigned int max_pixel_clock_panellink;
struct matrox_switch* hw_switch;
struct {
struct matrox_pll_features pll;
struct matrox_DAC1064_features DAC1064;
} features;
struct {
spinlock_t DAC;
spinlock_t accel;
} lock;
enum mga_chip chip;
int interleave;
int millenium;
int milleniumII;
struct {
int cfb4;
const int* vxres;
int cross4MB;
int text;
int plnwt;
int srcorg;
} capable;
#ifdef CONFIG_MTRR
struct {
int vram;
int vram_valid;
} mtrr;
#endif
struct {
int precise_width;
int mga_24bpp_fix;
int novga;
int nobios;
int nopciretry;
int noinit;
int sgram;
#ifdef CONFIG_FB_MATROX_32MB
int support32MB;
#endif
int accelerator;
int text_type_aux;
int video64bits;
int crtc2;
int maven_capable;
unsigned int vgastep;
unsigned int textmode;
unsigned int textstep;
unsigned int textvram; /* character cells */
unsigned int ydstorg; /* offset in bytes from video start to usable memory */
/* 0 except for 6MB Millenium */
int memtype;
int g450dac;
int dfp_type;
int panellink; /* G400 DFP possible (not G450/G550) */
int dualhead;
unsigned int fbResource;
} devflags;
struct fb_ops fbops;
struct matrox_bios bios;
struct {
struct matrox_pll_limits pixel;
struct matrox_pll_limits system;
struct matrox_pll_limits video;
} limits;
struct {
struct matrox_pll_cache pixel;
struct matrox_pll_cache system;
struct matrox_pll_cache video;
} cache;
struct {
struct {
unsigned int video;
unsigned int system;
} pll;
struct {
u_int32_t opt;
u_int32_t opt2;
u_int32_t opt3;
u_int32_t mctlwtst;
u_int32_t mctlwtst_core;
u_int32_t memmisc;
u_int32_t memrdbk;
u_int32_t maccess;
} reg;
struct {
unsigned int ddr:1,
emrswen:1,
dll:1;
} memory;
} values;
u_int32_t cmap[16];
};
#define info2minfo(info) container_of(info, struct matrox_fb_info, fbcon)
#ifdef CONFIG_FB_MATROX_MULTIHEAD
#define ACCESS_FBINFO2(info, x) (info->x)
#define ACCESS_FBINFO(x) ACCESS_FBINFO2(minfo,x)
#define MINFO minfo
#define WPMINFO2 struct matrox_fb_info* minfo
#define WPMINFO WPMINFO2 ,
#define CPMINFO2 const struct matrox_fb_info* minfo
#define CPMINFO CPMINFO2 ,
#define PMINFO2 minfo
#define PMINFO PMINFO2 ,
#define MINFO_FROM(x) struct matrox_fb_info* minfo = x
#else
extern struct matrox_fb_info matroxfb_global_mxinfo;
#define ACCESS_FBINFO(x) (matroxfb_global_mxinfo.x)
#define ACCESS_FBINFO2(info, x) (matroxfb_global_mxinfo.x)
#define MINFO (&matroxfb_global_mxinfo)
#define WPMINFO2 void
#define WPMINFO
#define CPMINFO2 void
#define CPMINFO
#define PMINFO2
#define PMINFO
#define MINFO_FROM(x)
#endif
#define MINFO_FROM_INFO(x) MINFO_FROM(info2minfo(x))
struct matrox_switch {
int (*preinit)(WPMINFO2);
void (*reset)(WPMINFO2);
int (*init)(WPMINFO struct my_timming*);
void (*restore)(WPMINFO2);
};
struct matroxfb_driver {
struct list_head node;
char* name;
void* (*probe)(struct matrox_fb_info* info);
void (*remove)(struct matrox_fb_info* info, void* data);
};
int matroxfb_register_driver(struct matroxfb_driver* drv);
void matroxfb_unregister_driver(struct matroxfb_driver* drv);
#define PCI_OPTION_REG 0x40
#define PCI_OPTION_ENABLE_ROM 0x40000000
#define PCI_MGA_INDEX 0x44
#define PCI_MGA_DATA 0x48
#define PCI_OPTION2_REG 0x50
#define PCI_OPTION3_REG 0x54
#define PCI_MEMMISC_REG 0x58
#define M_DWGCTL 0x1C00
#define M_MACCESS 0x1C04
#define M_CTLWTST 0x1C08
#define M_PLNWT 0x1C1C
#define M_BCOL 0x1C20
#define M_FCOL 0x1C24
#define M_SGN 0x1C58
#define M_LEN 0x1C5C
#define M_AR0 0x1C60
#define M_AR1 0x1C64
#define M_AR2 0x1C68
#define M_AR3 0x1C6C
#define M_AR4 0x1C70
#define M_AR5 0x1C74
#define M_AR6 0x1C78
#define M_CXBNDRY 0x1C80
#define M_FXBNDRY 0x1C84
#define M_YDSTLEN 0x1C88
#define M_PITCH 0x1C8C
#define M_YDST 0x1C90
#define M_YDSTORG 0x1C94
#define M_YTOP 0x1C98
#define M_YBOT 0x1C9C
/* mystique only */
#define M_CACHEFLUSH 0x1FFF
#define M_EXEC 0x0100
#define M_DWG_TRAP 0x04
#define M_DWG_BITBLT 0x08
#define M_DWG_ILOAD 0x09
#define M_DWG_LINEAR 0x0080
#define M_DWG_SOLID 0x0800
#define M_DWG_ARZERO 0x1000
#define M_DWG_SGNZERO 0x2000
#define M_DWG_SHIFTZERO 0x4000
#define M_DWG_REPLACE 0x000C0000
#define M_DWG_REPLACE2 (M_DWG_REPLACE | 0x40)
#define M_DWG_XOR 0x00060010
#define M_DWG_BFCOL 0x04000000
#define M_DWG_BMONOWF 0x08000000
#define M_DWG_TRANSC 0x40000000
#define M_FIFOSTATUS 0x1E10
#define M_STATUS 0x1E14
#define M_ICLEAR 0x1E18
#define M_IEN 0x1E1C
#define M_VCOUNT 0x1E20
#define M_RESET 0x1E40
#define M_MEMRDBK 0x1E44
#define M_AGP2PLL 0x1E4C
#define M_OPMODE 0x1E54
#define M_OPMODE_DMA_GEN_WRITE 0x00
#define M_OPMODE_DMA_BLIT 0x04
#define M_OPMODE_DMA_VECTOR_WRITE 0x08
#define M_OPMODE_DMA_LE 0x0000 /* little endian - no transformation */
#define M_OPMODE_DMA_BE_8BPP 0x0000
#define M_OPMODE_DMA_BE_16BPP 0x0100
#define M_OPMODE_DMA_BE_32BPP 0x0200
#define M_OPMODE_DIR_LE 0x000000 /* little endian - no transformation */
#define M_OPMODE_DIR_BE_8BPP 0x000000
#define M_OPMODE_DIR_BE_16BPP 0x010000
#define M_OPMODE_DIR_BE_32BPP 0x020000
#define M_ATTR_INDEX 0x1FC0
#define M_ATTR_DATA 0x1FC1
#define M_MISC_REG 0x1FC2
#define M_3C2_RD 0x1FC2
#define M_SEQ_INDEX 0x1FC4
#define M_SEQ_DATA 0x1FC5
#define M_SEQ1 0x01
#define M_SEQ1_SCROFF 0x20
#define M_MISC_REG_READ 0x1FCC
#define M_GRAPHICS_INDEX 0x1FCE
#define M_GRAPHICS_DATA 0x1FCF
#define M_CRTC_INDEX 0x1FD4
#define M_ATTR_RESET 0x1FDA
#define M_3DA_WR 0x1FDA
#define M_INSTS1 0x1FDA
#define M_EXTVGA_INDEX 0x1FDE
#define M_EXTVGA_DATA 0x1FDF
/* G200 only */
#define M_SRCORG 0x2CB4
#define M_DSTORG 0x2CB8
#define M_RAMDAC_BASE 0x3C00
/* fortunately, same on TVP3026 and MGA1064 */
#define M_DAC_REG (M_RAMDAC_BASE+0)
#define M_DAC_VAL (M_RAMDAC_BASE+1)
#define M_PALETTE_MASK (M_RAMDAC_BASE+2)
#define M_X_INDEX 0x00
#define M_X_DATAREG 0x0A
#define DAC_XGENIOCTRL 0x2A
#define DAC_XGENIODATA 0x2B
#define M_C2CTL 0x3C10
#define MX_OPTION_BSWAP 0x00000000
#ifdef __LITTLE_ENDIAN
#define M_OPMODE_4BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_LE | M_OPMODE_DMA_BLIT)
#define M_OPMODE_8BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_LE | M_OPMODE_DMA_BLIT)
#define M_OPMODE_16BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_LE | M_OPMODE_DMA_BLIT)
#define M_OPMODE_24BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_LE | M_OPMODE_DMA_BLIT)
#define M_OPMODE_32BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_LE | M_OPMODE_DMA_BLIT)
#else
#ifdef __BIG_ENDIAN
#define M_OPMODE_4BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_LE | M_OPMODE_DMA_BLIT) /* TODO */
#define M_OPMODE_8BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_BE_8BPP | M_OPMODE_DMA_BLIT)
#define M_OPMODE_16BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_BE_16BPP | M_OPMODE_DMA_BLIT)
#define M_OPMODE_24BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_BE_8BPP | M_OPMODE_DMA_BLIT) /* TODO, ?32 */
#define M_OPMODE_32BPP (M_OPMODE_DMA_LE | M_OPMODE_DIR_BE_32BPP | M_OPMODE_DMA_BLIT)
#else
#error "Byte ordering have to be defined. Cannot continue."
#endif
#endif
#define mga_inb(addr) mga_readb(ACCESS_FBINFO(mmio.vbase), (addr))
#define mga_inl(addr) mga_readl(ACCESS_FBINFO(mmio.vbase), (addr))
#define mga_outb(addr,val) mga_writeb(ACCESS_FBINFO(mmio.vbase), (addr), (val))
#define mga_outw(addr,val) mga_writew(ACCESS_FBINFO(mmio.vbase), (addr), (val))
#define mga_outl(addr,val) mga_writel(ACCESS_FBINFO(mmio.vbase), (addr), (val))
#define mga_readr(port,idx) (mga_outb((port),(idx)), mga_inb((port)+1))
#define mga_setr(addr,port,val) mga_outw(addr, ((val)<<8) | (port))
#define mga_fifo(n) do {} while ((mga_inl(M_FIFOSTATUS) & 0xFF) < (n))
#define WaitTillIdle() do {} while (mga_inl(M_STATUS) & 0x10000)
/* code speedup */
#ifdef CONFIG_FB_MATROX_MILLENIUM
#define isInterleave(x) (x->interleave)
#define isMillenium(x) (x->millenium)
#define isMilleniumII(x) (x->milleniumII)
#else
#define isInterleave(x) (0)
#define isMillenium(x) (0)
#define isMilleniumII(x) (0)
#endif
#define matroxfb_DAC_lock() spin_lock(&ACCESS_FBINFO(lock.DAC))
#define matroxfb_DAC_unlock() spin_unlock(&ACCESS_FBINFO(lock.DAC))
#define matroxfb_DAC_lock_irqsave(flags) spin_lock_irqsave(&ACCESS_FBINFO(lock.DAC),flags)
#define matroxfb_DAC_unlock_irqrestore(flags) spin_unlock_irqrestore(&ACCESS_FBINFO(lock.DAC),flags)
extern void matroxfb_DAC_out(CPMINFO int reg, int val);
extern int matroxfb_DAC_in(CPMINFO int reg);
extern void matroxfb_var2my(struct fb_var_screeninfo* fvsi, struct my_timming* mt);
extern int matroxfb_wait_for_sync(WPMINFO u_int32_t crtc);
extern int matroxfb_enable_irq(WPMINFO int reenable);
#ifdef MATROXFB_USE_SPINLOCKS
#define CRITBEGIN spin_lock_irqsave(&ACCESS_FBINFO(lock.accel), critflags);
#define CRITEND spin_unlock_irqrestore(&ACCESS_FBINFO(lock.accel), critflags);
#define CRITFLAGS unsigned long critflags;
#else
#define CRITBEGIN
#define CRITEND
#define CRITFLAGS
#endif
#endif /* __MATROXFB_H__ */
