xorg-server-1.4/hw/xfree86/modes/xf86DiDGA.c

   1 /*
   2  * Copyright © 2006 Keith Packard
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that copyright
   7  * notice and this permission notice appear in supporting documentation, and
   8  * that the name of the copyright holders not be used in advertising or
   9  * publicity pertaining to distribution of the software without specific,
  10  * written prior permission.  The copyright holders make no representations
  11  * about the suitability of this software for any purpose.  It is provided "as
  12  * is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20  * OF THIS SOFTWARE.
  21  */
  22
  23 #ifdef HAVE_XORG_CONFIG_H
  24 #include <xorg-config.h>
  25 #else
  26 #ifdef HAVE_CONFIG_H
  27 #include <config.h>
  28 #endif
  29 #endif
  30
  31 #include "xf86.h"
  32 #include "xf86DDC.h"
  33 #include "xf86_OSproc.h"
  34 #include "dgaproc.h"
  35 #include "xf86Crtc.h"
  36 #include "xf86Modes.h"
  37 #include "gcstruct.h"
  38 #include "scrnintstr.h"
  39 #include "windowstr.h"
  40
  41 static Bool
  42 xf86_dga_get_modes (ScreenPtr pScreen)
  43 {
  44     ScrnInfoPtr         scrn = xf86Screens[pScreen->myNum];
  45     xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
  46     DGAModePtr          modes, mode;
  47     DisplayModePtr      display_mode;
  48     int                 bpp = scrn->bitsPerPixel >> 3;
  49     int                 num;
  50
  51     num = 0;
  52     display_mode = scrn->modes;
  53     while (display_mode)
  54     {
  55         num++;
  56         display_mode = display_mode->next;
  57         if (display_mode == scrn->modes)
  58             break;
  59     }
  60
  61     if (!num)
  62         return FALSE;
  63
  64     modes = xalloc(num * sizeof(DGAModeRec));
  65     if (!modes)
  66         return FALSE;
  67
  68     num = 0;
  69     display_mode = scrn->modes;
  70     while (display_mode)
  71     {
  72         mode = modes + num++;
  73
  74         mode->mode = display_mode;
  75         mode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
  76         mode->flags |= DGA_FILL_RECT | DGA_BLIT_RECT;
  77         if (display_mode->Flags & V_DBLSCAN)
  78             mode->flags |= DGA_DOUBLESCAN;
  79         if (display_mode->Flags & V_INTERLACE)
  80             mode->flags |= DGA_INTERLACED;
  81         mode->byteOrder = scrn->imageByteOrder;
  82         mode->depth = scrn->depth;
  83         mode->bitsPerPixel = scrn->bitsPerPixel;
  84         mode->red_mask = scrn->mask.red;
  85         mode->green_mask = scrn->mask.green;
  86         mode->blue_mask = scrn->mask.blue;
  87         mode->visualClass = (bpp == 1) ? PseudoColor : TrueColor;
  88         mode->viewportWidth = display_mode->HDisplay;
  89         mode->viewportHeight = display_mode->VDisplay;
  90         mode->xViewportStep = (bpp == 3) ? 2 : 1;
  91         mode->yViewportStep = 1;
  92         mode->viewportFlags = DGA_FLIP_RETRACE;
  93         mode->offset = 0;
  94         mode->address = (unsigned char *) xf86_config->dga_address;
  95         mode->bytesPerScanline = xf86_config->dga_stride;
  96         mode->imageWidth = xf86_config->dga_width;
  97         mode->imageHeight = xf86_config->dga_height;
  98         mode->pixmapWidth = mode->imageWidth;
  99         mode->pixmapHeight = mode->imageHeight;
 100         mode->maxViewportX = mode->imageWidth - mode->viewportWidth;
 101         mode->maxViewportY = mode->imageHeight - mode->viewportHeight;
 102
 103         display_mode = display_mode->next;
 104         if (display_mode == scrn->modes)
 105             break;
 106     }
 107     if (xf86_config->dga_modes)
 108         xfree (xf86_config->dga_modes);
 109     xf86_config->dga_nmode = num;
 110     xf86_config->dga_modes = modes;
 111     return TRUE;
 112 }
 113
 114 static Bool
 115 xf86_dga_set_mode(ScrnInfoPtr scrn, DGAModePtr display_mode)
 116 {
 117     ScreenPtr           pScreen = scrn->pScreen;
 118     xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
 119
 120     if (!display_mode)
 121     {
 122         if (xf86_config->dga_save_mode)
 123         {
 124             xf86SwitchMode(pScreen, xf86_config->dga_save_mode);
 125             xf86_config->dga_save_mode = NULL;
 126         }
 127     }
 128     else
 129     {
 130         if (!xf86_config->dga_save_mode)
 131         {
 132             xf86_config->dga_save_mode = scrn->currentMode;
 133             xf86SwitchMode(pScreen, display_mode->mode);
 134         }
 135     }
 136     return TRUE;
 137 }
 138
 139 static int
 140 xf86_dga_get_viewport(ScrnInfoPtr scrn)
 141 {
 142     return 0;
 143 }
 144
 145 static void
 146 xf86_dga_set_viewport(ScrnInfoPtr scrn, int x, int y, int flags)
 147 {
 148    scrn->AdjustFrame(scrn->pScreen->myNum, x, y, flags);
 149 }
 150
 151 static Bool
 152 xf86_dga_get_drawable_and_gc (ScrnInfoPtr scrn, DrawablePtr *ppDrawable, GCPtr *ppGC)
 153 {
 154     ScreenPtr           pScreen = scrn->pScreen;
 155     xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
 156     PixmapPtr           pPixmap;
 157     GCPtr               pGC;
 158
 159     pPixmap = GetScratchPixmapHeader (pScreen, xf86_config->dga_width, xf86_config->dga_height,
 160                                       scrn->depth, scrn->bitsPerPixel, xf86_config->dga_stride,
 161                                       (char *) scrn->memPhysBase + scrn->fbOffset);
 162     if (!pPixmap)
 163         return FALSE;
 164     pGC  = GetScratchGC (scrn->depth, pScreen);
 165     if (!pGC)
 166     {
 167         FreeScratchPixmapHeader (pPixmap);
 168         return FALSE;
 169     }
 170     *ppDrawable = &pPixmap->drawable;
 171     *ppGC = pGC;
 172     return TRUE;
 173 }
 174
 175 static void
 176 xf86_dga_release_drawable_and_gc (ScrnInfoPtr scrn, DrawablePtr pDrawable, GCPtr pGC)
 177 {
 178     FreeScratchGC (pGC);
 179     FreeScratchPixmapHeader ((PixmapPtr) pDrawable);
 180 }
 181
 182 static void
 183 xf86_dga_fill_rect(ScrnInfoPtr scrn, int x, int y, int w, int h, unsigned long color)
 184 {
 185     GCPtr               pGC;
 186     DrawablePtr         pDrawable;
 187     XID                 vals[1];
 188     xRectangle          r;
 189
 190     if (!xf86_dga_get_drawable_and_gc (scrn, &pDrawable, &pGC))
 191         return;
 192     vals[0] = color;
 193     ChangeGC (pGC, GCForeground, vals);
 194     ValidateGC (pDrawable, pGC);
 195     r.x = x;
 196     r.y = y;
 197     r.width = w;
 198     r.height = h;
 199     pGC->ops->PolyFillRect (pDrawable, pGC, 1, &r);
 200     xf86_dga_release_drawable_and_gc (scrn, pDrawable, pGC);
 201 }
 202
 203 static void
 204 xf86_dga_sync(ScrnInfoPtr scrn)
 205 {
 206     ScreenPtr   pScreen = scrn->pScreen;
 207     WindowPtr   pRoot = WindowTable [pScreen->myNum];
 208     char        buffer[4];
 209
 210     pScreen->GetImage (&pRoot->drawable, 0, 0, 1, 1, ZPixmap, ~0L, buffer);
 211 }
 212
 213 static void
 214 xf86_dga_blit_rect(ScrnInfoPtr scrn, int srcx, int srcy, int w, int h, int dstx, int dsty)
 215 {
 216     DrawablePtr pDrawable;
 217     GCPtr       pGC;
 218
 219     if (!xf86_dga_get_drawable_and_gc (scrn, &pDrawable, &pGC))
 220         return;
 221     ValidateGC (pDrawable, pGC);
 222     pGC->ops->CopyArea (pDrawable, pDrawable, pGC, srcx, srcy, w, h, dstx, dsty);
 223     xf86_dga_release_drawable_and_gc (scrn, pDrawable, pGC);
 224 }
 225
 226 static Bool
 227 xf86_dga_open_framebuffer(ScrnInfoPtr scrn,
 228                           char **name,
 229                           unsigned char **mem, int *size, int *offset, int *flags)
 230 {
 231     xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
 232
 233     *size = xf86_config->dga_stride * xf86_config->dga_height;
 234     *mem = (unsigned char *) (xf86_config->dga_address);
 235     *offset = 0;
 236     *flags = DGA_NEED_ROOT;
 237
 238     return TRUE;
 239 }
 240
 241 static void
 242 xf86_dga_close_framebuffer(ScrnInfoPtr scrn)
 243 {
 244 }
 245
 246 static DGAFunctionRec xf86_dga_funcs = {
 247    xf86_dga_open_framebuffer,
 248    xf86_dga_close_framebuffer,
 249    xf86_dga_set_mode,
 250    xf86_dga_set_viewport,
 251    xf86_dga_get_viewport,
 252    xf86_dga_sync,
 253    xf86_dga_fill_rect,
 254    xf86_dga_blit_rect,
 255    NULL
 256 };
 257
 258 _X_EXPORT Bool
 259 xf86DiDGAReInit (ScreenPtr pScreen)
 260 {
 261     ScrnInfoPtr         scrn = xf86Screens[pScreen->myNum];
 262     xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
 263
 264     if (!xf86_dga_get_modes (pScreen))
 265         return FALSE;
 266
 267     return DGAReInitModes (pScreen, xf86_config->dga_modes, xf86_config->dga_nmode);
 268 }
 269
 270 _X_EXPORT Bool
 271 xf86DiDGAInit (ScreenPtr pScreen, unsigned long dga_address)
 272 {
 273     ScrnInfoPtr         scrn = xf86Screens[pScreen->myNum];
 274     xf86CrtcConfigPtr   xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
 275
 276     xf86_config->dga_flags = 0;
 277     xf86_config->dga_address = dga_address;
 278     xf86_config->dga_width = scrn->virtualX;
 279     xf86_config->dga_height = scrn->virtualY;
 280     xf86_config->dga_stride = scrn->displayWidth * scrn->bitsPerPixel >> 3;
 281
 282     if (!xf86_dga_get_modes (pScreen))
 283         return FALSE;
 284
 285     return DGAInit(pScreen, &xf86_dga_funcs, xf86_config->dga_modes, xf86_config->dga_nmode);
 286 }