3045d63969
the software cursor starts flickering and reacts bumby if a process spends most of its time with drawlock acquired because the timer interrupt thats supposed to redraw the cursor fails to acquire the lock at the time the timer fires. instead of trying to draw the cursor on the screen from a timer interrupt 30 times per second, devmouse now creates a process calling cursoron() and cursoroff() when the cursor needs to be redrawn. this allows the swcursor to schedule a redraw while holding the drawlock in swcursoravoid() and cursoron()/cursoroff() are now able to wait for a qlock (drawlock) because they get called from process context. the overall responsiveness is also improved with this change as the cursor redraw rate isnt limited to 30 times a second anymore.
187 lines
4.4 KiB
C
187 lines
4.4 KiB
C
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 void absmousetrack(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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int softscreen;
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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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extern void mouseredraw(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 void cursoron(void);
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extern void cursoroff(void);
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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 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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/* swcursor.c */
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void swcursorhide(void);
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void swcursoravoid(Rectangle);
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void swcursordraw(Point);
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void swcursorload(Cursor *);
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void swcursorinit(void);
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