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      1 
      2 #ifdef HAVE_CONFIG_H
      3 #include "config.h"
      4 #endif
      5 
      6 /* Driver data structures */
      7 #include "radeon.h"
      8 
      9 /* Allocates memory, either by resizing the allocation pointed to by mem_struct,
     10  * or by freeing mem_struct (if non-NULL) and allocating a new space.  The size
     11  * is measured in bytes, and the offset from the beginning of card space is
     12  * returned.
     13  */
     14 uint32_t
     15 radeon_legacy_allocate_memory(ScrnInfoPtr pScrn,
     16 		       void **mem_struct,
     17 		       int size,
     18 		       int align,
     19 		       int domain)
     20 {
     21     ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
     22     RADEONInfoPtr info = RADEONPTR(pScrn);
     23     uint32_t offset = 0;
     24 
     25 #ifdef XF86DRM_MODE
     26     if (info->cs) {
     27 	struct radeon_bo *video_bo;
     28 
     29 	if (*mem_struct)
     30 		radeon_legacy_free_memory(pScrn, *mem_struct);
     31 
     32 	video_bo = radeon_bo_open(info->bufmgr, 0, size, align, domain, 0);
     33 
     34 	*mem_struct = video_bo;
     35 
     36 	if (!video_bo)
     37 	    return 0;
     38 
     39 	return (uint32_t)-1;
     40     }
     41 #endif
     42 #ifdef USE_EXA
     43     if (info->useEXA) {
     44 	ExaOffscreenArea *area = *mem_struct;
     45 
     46 	if (area != NULL) {
     47 	    if (area->size >= size)
     48 		return area->offset;
     49 
     50 	    exaOffscreenFree(pScreen, area);
     51 	}
     52 
     53 	area = exaOffscreenAlloc(pScreen, size, align, TRUE,
     54 				 NULL, NULL);
     55 
     56 	*mem_struct = area;
     57 	if (area == NULL)
     58 	    return 0;
     59 	offset = area->offset;
     60     }
     61 #endif /* USE_EXA */
     62 #ifdef USE_XAA
     63     if (!info->useEXA) {
     64 	FBLinearPtr linear = *mem_struct;
     65 	int cpp = info->CurrentLayout.bitsPerPixel / 8;
     66 
     67 	/* XAA allocates in units of pixels at the screen bpp, so adjust size
     68 	 * appropriately.
     69 	 */
     70 	size = (size + cpp - 1) / cpp;
     71 	align = (align + cpp - 1) / cpp;
     72 
     73 	if (linear) {
     74 	    if(linear->size >= size)
     75 		return linear->offset * cpp;
     76 
     77 	    if(xf86ResizeOffscreenLinear(linear, size))
     78 		return linear->offset * cpp;
     79 
     80 	    xf86FreeOffscreenLinear(linear);
     81 	}
     82 
     83 	linear = xf86AllocateOffscreenLinear(pScreen, size, align,
     84 					     NULL, NULL, NULL);
     85 	*mem_struct = linear;
     86 
     87 	if (!linear) {
     88 	    int max_size;
     89 
     90 	    xf86QueryLargestOffscreenLinear(pScreen, &max_size, align,
     91 					    PRIORITY_EXTREME);
     92 
     93 	    if (max_size < size)
     94 		return 0;
     95 
     96 	    xf86PurgeUnlockedOffscreenAreas(pScreen);
     97 	    linear = xf86AllocateOffscreenLinear(pScreen, size, align,
     98 						 NULL, NULL, NULL);
     99 	    *mem_struct = linear;
    100 	    if (!linear)
    101 		return 0;
    102 	}
    103 	offset = linear->offset * cpp;
    104     }
    105 #endif /* USE_XAA */
    106 
    107     return offset;
    108 }
    109 
    110 void
    111 radeon_legacy_free_memory(ScrnInfoPtr pScrn,
    112 		   void *mem_struct)
    113 {
    114     RADEONInfoPtr info = RADEONPTR(pScrn);
    115 
    116 #ifdef XF86DRM_MODE
    117     if (info->cs) {
    118         struct radeon_bo *bo = mem_struct;
    119 	radeon_bo_unref(bo);
    120 	return;
    121     }
    122 #endif
    123 #ifdef USE_EXA
    124     ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
    125 
    126     if (info->useEXA) {
    127 	ExaOffscreenArea *area = mem_struct;
    128 
    129 	if (area != NULL)
    130 	    exaOffscreenFree(pScreen, area);
    131 	area = NULL;
    132     }
    133 #endif /* USE_EXA */
    134 #ifdef USE_XAA
    135     if (!info->useEXA) {
    136 	FBLinearPtr linear = mem_struct;
    137 
    138 	if (linear != NULL)
    139 	    xf86FreeOffscreenLinear(linear);
    140 	linear = NULL;
    141     }
    142 #endif /* USE_XAA */
    143 }
    144