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typedef struct Cursor Cursor;
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typedef struct Cursorinfo Cursorinfo;
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struct Cursorinfo {
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Cursor;
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Lock;
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};
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/* devmouse.c */
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extern void mousetrack(int, int, int, int);
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extern Point mousexy(void);
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extern void mouseaccelerate(int);
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extern int m3mouseputc(Queue*, int);
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extern int m5mouseputc(Queue*, int);
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extern int mouseputc(Queue*, int);
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extern Cursorinfo cursor;
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extern Cursor arrow;
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/*
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* Generic VGA registers.
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*/
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enum {
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MiscW = 0x03C2, /* Miscellaneous Output (W) */
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MiscR = 0x03CC, /* Miscellaneous Output (R) */
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Status0 = 0x03C2, /* Input status 0 (R) */
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Status1 = 0x03DA, /* Input Status 1 (R) */
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FeatureR = 0x03CA, /* Feature Control (R) */
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FeatureW = 0x03DA, /* Feature Control (W) */
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Seqx = 0x03C4, /* Sequencer Index, Data at Seqx+1 */
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Crtx = 0x03D4, /* CRT Controller Index, Data at Crtx+1 */
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Grx = 0x03CE, /* Graphics Controller Index, Data at Grx+1 */
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Attrx = 0x03C0, /* Attribute Controller Index and Data */
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PaddrW = 0x03C8, /* Palette Address Register, write */
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Pdata = 0x03C9, /* Palette Data Register */
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Pixmask = 0x03C6, /* Pixel Mask Register */
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PaddrR = 0x03C7, /* Palette Address Register, read */
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Pstatus = 0x03C7, /* DAC Status (RO) */
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Pcolours = 256, /* Palette */
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Pred = 0,
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Pgreen = 1,
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Pblue = 2,
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Pblack = 0x00,
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Pwhite = 0xFF,
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};
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#define VGAMEM() 0xA0000
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#define vgai(port) inb(port)
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#define vgao(port, data) outb(port, data)
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extern int vgaxi(long, uchar);
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extern int vgaxo(long, uchar, uchar);
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/*
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*/
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typedef struct VGAdev VGAdev;
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typedef struct VGAcur VGAcur;
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typedef struct VGAscr VGAscr;
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struct VGAdev {
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char* name;
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void (*enable)(VGAscr*);
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void (*disable)(VGAscr*);
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void (*page)(VGAscr*, int);
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void (*linear)(VGAscr*, int, int);
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void (*drawinit)(VGAscr*);
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int (*fill)(VGAscr*, Rectangle, ulong);
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void (*ovlctl)(VGAscr*, Chan*, void*, int);
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int (*ovlwrite)(VGAscr*, void*, int, vlong);
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void (*flush)(VGAscr*, Rectangle);
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};
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struct VGAcur {
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char* name;
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void (*enable)(VGAscr*);
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void (*disable)(VGAscr*);
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void (*load)(VGAscr*, Cursor*);
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int (*move)(VGAscr*, Point);
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int doespanning;
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};
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/*
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*/
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struct VGAscr {
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Lock devlock;
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VGAdev* dev;
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Pcidev* pci;
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VGAcur* cur;
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ulong storage;
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Cursor;
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int useflush;
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ulong paddr; /* frame buffer */
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void* vaddr;
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int apsize;
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ulong io; /* device specific registers */
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ulong *mmio;
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ulong colormap[Pcolours][3];
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int palettedepth;
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Memimage* gscreen;
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Memdata* gscreendata;
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Memsubfont* memdefont;
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int (*fill)(VGAscr*, Rectangle, ulong);
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int (*scroll)(VGAscr*, Rectangle, Rectangle);
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void (*blank)(VGAscr*, int);
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ulong id; /* internal identifier for driver use */
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int isblank;
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int overlayinit;
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};
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extern VGAscr vgascreen[];
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enum {
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Backgnd = 0, /* black */
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};
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/* mouse.c */
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extern void mousectl(Cmdbuf*);
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extern void mouseresize(void);
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/* screen.c */
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extern int hwaccel; /* use hw acceleration; default on */
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extern int hwblank; /* use hw blanking; default on */
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extern int panning; /* use virtual screen panning; default off */
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extern void addvgaseg(char*, ulong, ulong);
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extern uchar* attachscreen(Rectangle*, ulong*, int*, int*, int*);
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extern void flushmemscreen(Rectangle);
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extern int cursoron(int);
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extern void cursoroff(int);
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extern void setcursor(Cursor*);
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extern int screensize(int, int, int, ulong);
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extern int screenaperture(int, int);
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extern Rectangle physgscreenr; /* actual monitor size */
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extern void blankscreen(int);
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extern VGAcur swcursor;
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extern void swcursorinit(void);
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extern void swcursorhide(void);
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extern void swcursoravoid(Rectangle);
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extern void swcursorunhide(void);
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/* devdraw.c */
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extern void deletescreenimage(void);
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extern void resetscreenimage(void);
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extern int drawhasclients(void);
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extern ulong blanktime;
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extern void setscreenimageclipr(Rectangle);
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extern void drawflush(void);
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extern int drawidletime(void);
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extern QLock drawlock;
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/* vga.c */
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extern void vgascreenwin(VGAscr*);
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extern void vgaimageinit(ulong);
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extern void vgalinearpciid(VGAscr*, int, int);
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extern void vgalinearpci(VGAscr*);
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extern void vgalinearaddr(VGAscr*, ulong, int);
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extern void drawblankscreen(int);
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extern void vgablank(VGAscr*, int);
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extern Lock vgascreenlock;
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#define ishwimage(i) (vgascreen[0].gscreendata && (i)->data->bdata == vgascreen[0].gscreendata->bdata)
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