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framebuffer: set DIRTY_MEMORY_VGA on RAM that is used for the framebuffer

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The MemoryRegionSection contains enough information to access the
RAM region underlying the framebuffer, and can be cached inside the
display device.

By doing this, the new framebuffer_update_memory_section function can
enable dirty memory logging on the relevant RAM region.  The function
must be called whenever the stride or base of the framebuffer changes;
a simple way to cover these cases is to call it on every full frame
invalidation, which is a rare case.

framebuffer_update_display now works entirely on a MemoryRegionSection,
without going through cpu_physical_memory_map/unmap.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2015-07-13 12:00:29 +02:00
parent deb809edb8
commit c1076c3e13
6 changed files with 137 additions and 51 deletions
Download patch file Download diff file Expand all files Collapse all files

29
hw/display/pxa2xx_lcd.c
View file

@ -35,6 +35,7 @@ struct DMAChannel {
struct PXA2xxLCDState {
MemoryRegion *sysmem;
MemoryRegion iomem;
MemoryRegionSection fbsection;
qemu_irq irq;
int irqlevel;
@ -687,8 +688,11 @@ static void pxa2xx_lcdc_dma0_redraw_rot0(PXA2xxLCDState *s,
dest_width = s->xres * s->dest_width;
*miny = 0;
framebuffer_update_display(surface, s->sysmem,
addr, s->xres, s->yres,
if (s->invalidated) {
framebuffer_update_memory_section(&s->fbsection, s->sysmem,
addr, s->yres, src_width);
}
framebuffer_update_display(surface, &s->fbsection, s->xres, s->yres,
src_width, dest_width, s->dest_width,
s->invalidated,
fn, s->dma_ch[0].palette, miny, maxy);
@ -715,8 +719,11 @@ static void pxa2xx_lcdc_dma0_redraw_rot90(PXA2xxLCDState *s,
dest_width = s->yres * s->dest_width;
*miny = 0;
framebuffer_update_display(surface, s->sysmem,
addr, s->xres, s->yres,
if (s->invalidated) {
framebuffer_update_memory_section(&s->fbsection, s->sysmem,
addr, s->yres, src_width);
}
framebuffer_update_display(surface, &s->fbsection, s->xres, s->yres,
src_width, s->dest_width, -dest_width,
s->invalidated,
fn, s->dma_ch[0].palette,
@ -747,8 +754,11 @@ static void pxa2xx_lcdc_dma0_redraw_rot180(PXA2xxLCDState *s,
dest_width = s->xres * s->dest_width;
*miny = 0;
framebuffer_update_display(surface, s->sysmem,
addr, s->xres, s->yres,
if (s->invalidated) {
framebuffer_update_memory_section(&s->fbsection, s->sysmem,
addr, s->yres, src_width);
}
framebuffer_update_display(surface, &s->fbsection, s->xres, s->yres,
src_width, -dest_width, -s->dest_width,
s->invalidated,
fn, s->dma_ch[0].palette, miny, maxy);
@ -778,8 +788,11 @@ static void pxa2xx_lcdc_dma0_redraw_rot270(PXA2xxLCDState *s,
dest_width = s->yres * s->dest_width;
*miny = 0;
framebuffer_update_display(surface, s->sysmem,
addr, s->xres, s->yres,
if (s->invalidated) {
framebuffer_update_memory_section(&s->fbsection, s->sysmem,
addr, s->yres, src_width);
}
framebuffer_update_display(surface, &s->fbsection, s->xres, s->yres,
src_width, -s->dest_width, dest_width,
s->invalidated,
fn, s->dma_ch[0].palette,