Implement and use shared memory framebuffer device rendering reoutine.

Use DMA mapping API. Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6965 c046a42c-6fe2-441c-8c8c-71466251a162

Implement and use shared memory framebuffer device rendering reoutine.
Use DMA mapping API. Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6965 c046a42c-6fe2-441c-8c8c-71466251a162
pbrook
1 parent 602dafcf
Showing 10 changed files with 253 additions and 231 deletions
Makefile.target
hw/framebuffer.c
hw/framebuffer.h
hw/omap.h
hw/omap_lcd_template.h
hw/omap_lcdc.c
hw/pl110.c
hw/pl110_template.h
hw/pxa2xx_lcd.c
hw/pxa2xx_template.h
@@ -672,6 +672,7 @@ OBJS+= nseries.o blizzard.o onenand.o vga.o cbus.o tusb6010.o usb-musb.o
 OBJS+= tsc2005.o bt-hci-csr.o
 OBJS+= mst_fpga.o mainstone.o
 OBJS+= musicpal.o pflash_cfi02.o
+OBJS+= framebuffer.o
 CPPFLAGS += -DHAS_AUDIO
 endif
 ifeq ($(TARGET_BASE_ARCH), sh4)
+/*
+ * Framebuffer device helper routines
+ *
+ * Copyright (c) 2009 CodeSourcery
+ * Written by Paul Brook <paul@codesourcery.com>
+ *
+ * This code is licensed under the GNU GPLv2.
+ */
+
+/* TODO:
+   - Do something similar for framebuffers with local ram
+   - Handle rotation here instead of hacking dest_pitch
+   - Use common pixel conversion routines instead of per-device drawfn
+   - Remove all DisplayState knowledge from devices.
+ */
+
+#include "hw.h"
+#include "console.h"
+#include "framebuffer.h"
+#include "kvm.h"
+
+/* Render an image from a shared memory framebuffer.  */
+   
+void framebuffer_update_display(
+    DisplayState *ds,
+    target_phys_addr_t base,
+    int cols, /* Width in pixels.  */
+    int rows, /* Leight in pixels.  */
+    int src_width, /* Length of source line, in bytes.  */
+    int dest_row_pitch, /* Bytes between adjacent horizontal output pixels.  */
+    int dest_col_pitch, /* Bytes between adjacent vertical output pixels.  */
+    int invalidate, /* nonzero to redraw the whole image.  */
+    drawfn fn,
+    void *opaque,
+    int *first_row, /* Input and output.  */
+    int *last_row /* Output only */)
+{
+    target_phys_addr_t src_len;
+    uint8_t *dest;
+    uint8_t *src;
+    uint8_t *src_base;
+    int first, last = 0;
+    int dirty;
+    int i;
+    ram_addr_t addr;
+    ram_addr_t pd;
+    ram_addr_t pd2;
+
+    i = *first_row;
+    *first_row = -1;
+    src_len = src_width * rows;
+
+    if (kvm_enabled()) {
+        kvm_physical_sync_dirty_bitmap(base, src_len);
+    }
+    pd = cpu_get_physical_page_desc(base);
+    pd2 = cpu_get_physical_page_desc(base + src_len - 1);
+    /* We should reall check that this is a continuous ram region.
+       Instead we just check that the first and last pages are
+       both ram, and the right distance apart.  */
+    if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM
+        || (pd2 & ~TARGET_PAGE_MASK) > IO_MEM_ROM) {
+        return;
+    }
+    pd = (pd & TARGET_PAGE_MASK) + (base & ~TARGET_PAGE_MASK);
+    if (((pd + src_len - 1) & TARGET_PAGE_MASK) != (pd2 & TARGET_PAGE_MASK)) {
+        return;
+    }
+
+    src_base = cpu_physical_memory_map(base, &src_len, 0);
+    /* If we can't map the framebuffer then bail.  We could try harder,
+       but it's not really worth it as dirty flag tracking will probably
+       already have failed above.  */
+    if (!src_base)
+        return;
+    if (src_len != src_width * rows) {
+        cpu_physical_memory_unmap(src_base, src_len, 0, 0);
+        return;
+    }
+    src = src_base;
+    dest = ds_get_data(ds);
+    if (dest_col_pitch < 0)
+        dest -= dest_col_pitch * (cols - 1);
+    first = -1;
+    addr = pd;
+
+    addr += i * src_width;
+    src += i * src_width;
+    dest += i * dest_row_pitch;
+
+    for (; i < rows; i++) {
+        target_phys_addr_t dirty_offset;
+        dirty = 0;
+        dirty_offset = 0;
+        while (addr + dirty_offset < TARGET_PAGE_ALIGN(addr + src_width)) {
+            dirty |= cpu_physical_memory_get_dirty(addr + dirty_offset,
+                                                   VGA_DIRTY_FLAG);
+            dirty_offset += TARGET_PAGE_SIZE;
+        }
+
+        if (dirty || invalidate) {
+            fn(opaque, dest, src, cols, dest_col_pitch);
+            if (first == -1)
+                first = i;
+            last = i;
+        }
+        addr += src_width;
+        src += src_width;
+        dest += dest_row_pitch;
+    }
+    cpu_physical_memory_unmap(src_base, src_len, 0, 0);
+    if (first < 0) {
+        return;
+    }
+    cpu_physical_memory_reset_dirty(pd, pd + src_len, VGA_DIRTY_FLAG);
+    *first_row = first;
+    *last_row = last;
+    return;
+}
+#ifndef QEMU_FRAMEBUFFER_H
+#define QEMU_FRAMEBUFFER_H
+
+/* Framebuffer device helper routines.  */
+
+typedef void (*drawfn)(void *, uint8_t *, const uint8_t *, int, int);
+
+void framebuffer_update_display(
+    DisplayState *ds,
+    target_phys_addr_t base,
+    int cols,
+    int rows,
+    int src_width,
+    int dest_row_pitch,
+    int dest_col_pitch,
+    int invalidate,
+    drawfn fn,
+    void *opaque,
+    int *first_row,
+    int *last_row);
+
+#endif
@@ -490,7 +490,7 @@ struct omap_dma_lcd_channel_s {
     int dual;
     int current_frame;
-    ram_addr_t phys_framebuffer[2];
+    target_phys_addr_t phys_framebuffer[2];
     qemu_irq irq;
     struct omap_mpu_state_s *mpu;
 } *omap_dma_get_lcdch(struct soc_dma_s *s);
@@ -43,9 +43,10 @@
 /*
  * 2-bit colour
  */
-static void glue(draw_line2_, DEPTH)(
-                uint8_t *d, const uint8_t *s, int width, const uint16_t *pal)
+static void glue(draw_line2_, DEPTH)(void *opaque,
+                uint8_t *d, const uint8_t *s, int width, int deststep)
 {
+    uint16_t *pal = opaque;
     uint8_t v, r, g, b;
     do {
@@ -81,9 +82,10 @@ static void glue(draw_line2_, DEPTH)(
 /*
  * 4-bit colour
  */
-static void glue(draw_line4_, DEPTH)(
-                uint8_t *d, const uint8_t *s, int width, const uint16_t *pal)
+static void glue(draw_line4_, DEPTH)(void *opaque,
+                uint8_t *d, const uint8_t *s, int width, int deststep)
 {
+    uint16_t *pal = opaque;
     uint8_t v, r, g, b;
     do {
@@ -107,9 +109,10 @@ static void glue(draw_line4_, DEPTH)(
 /*
  * 8-bit colour
  */
-static void glue(draw_line8_, DEPTH)(
-                uint8_t *d, const uint8_t *s, int width, const uint16_t *pal)
+static void glue(draw_line8_, DEPTH)(void *opaque,
+                uint8_t *d, const uint8_t *s, int width, int deststep)
 {
+    uint16_t *pal = opaque;
     uint8_t v, r, g, b;
     do {
@@ -126,8 +129,8 @@ static void glue(draw_line8_, DEPTH)(
 /*
  * 12-bit colour
  */
-static void glue(draw_line12_, DEPTH)(
-                uint8_t *d, const uint8_t *s, int width, const uint16_t *pal)
+static void glue(draw_line12_, DEPTH)(void *opaque,
+                uint8_t *d, const uint8_t *s, int width, int deststep)
 {
     uint16_t v;
     uint8_t r, g, b;
@@ -146,8 +149,8 @@ static void glue(draw_line12_, DEPTH)(
 /*
  * 16-bit colour
  */
-static void glue(draw_line16_, DEPTH)(
-                uint8_t *d, const uint8_t *s, int width, const uint16_t *pal)
+static void glue(draw_line16_, DEPTH)(void *opaque,
+                uint8_t *d, const uint8_t *s, int width, int deststep)
 {
 #if DEPTH == 16 && defined(WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
     memcpy(d, s, width * 2);
@@ -20,6 +20,7 @@
 #include "hw.h"
 #include "console.h"
 #include "omap.h"
+#include "framebuffer.h"
 struct omap_lcd_panel_s {
     qemu_irq irq;
@@ -68,8 +69,7 @@ static void omap_lcd_interrupts(struct omap_lcd_panel_s *s)
 #include "pixel_ops.h"
-typedef void draw_line_func(
-                uint8_t *d, const uint8_t *s, int width, const uint16_t *pal);
+#define draw_line_func drawfn
 #define DEPTH 8
 #include "omap_lcd_template.h"
@@ -80,31 +80,31 @@ typedef void draw_line_func(
 #define DEPTH 32
 #include "omap_lcd_template.h"
-static draw_line_func *draw_line_table2[33] = {
+static draw_line_func draw_line_table2[33] = {
     [0 ... 32]	= 0,
     [8]		= draw_line2_8,
     [15]	= draw_line2_15,
     [16]	= draw_line2_16,
     [32]	= draw_line2_32,
-}, *draw_line_table4[33] = {
+}, draw_line_table4[33] = {
     [0 ... 32]	= 0,
     [8]		= draw_line4_8,
     [15]	= draw_line4_15,
     [16]	= draw_line4_16,
     [32]	= draw_line4_32,
-}, *draw_line_table8[33] = {
+}, draw_line_table8[33] = {
     [0 ... 32]	= 0,
     [8]		= draw_line8_8,
     [15]	= draw_line8_15,
     [16]	= draw_line8_16,
     [32]	= draw_line8_32,
-}, *draw_line_table12[33] = {
+}, draw_line_table12[33] = {
     [0 ... 32]	= 0,
     [8]		= draw_line12_8,
     [15]	= draw_line12_15,
     [16]	= draw_line12_16,
     [32]	= draw_line12_32,
-}, *draw_line_table16[33] = {
+}, draw_line_table16[33] = {
     [0 ... 32]	= 0,
     [8]		= draw_line16_8,
     [15]	= draw_line16_15,
@@ -115,11 +115,10 @@ static draw_line_func *draw_line_table2[33] = {
 static void omap_update_display(void *opaque)
 {
     struct omap_lcd_panel_s *omap_lcd = (struct omap_lcd_panel_s *) opaque;
-    draw_line_func *draw_line;
-    int size, dirty[2], minline, maxline, height;
-    int line, width, linesize, step, bpp, frame_offset;
-    ram_addr_t frame_base, scanline, newline, x;
-    uint8_t *s, *d;
+    draw_line_func draw_line;
+    int size, height, first, last;
+    int width, linesize, step, bpp, frame_offset;
+    target_phys_addr_t frame_base;
     if (!omap_lcd || omap_lcd->plm == 1 ||
                     !omap_lcd->enable || !ds_get_bits_per_pixel(omap_lcd->state))
@@ -127,9 +126,9 @@ static void omap_update_display(void *opaque)
     frame_offset = 0;
     if (omap_lcd->plm != 2) {
-        memcpy(omap_lcd->palette, phys_ram_base +
-                        omap_lcd->dma->phys_framebuffer[
-                        omap_lcd->dma->current_frame], 0x200);
+        cpu_physical_memory_read(omap_lcd->dma->phys_framebuffer[
+                                  omap_lcd->dma->current_frame],
+                                 (void *)omap_lcd->palette, 0x200);
         switch (omap_lcd->palette[0] >> 12 & 7) {
         case 3 ... 7:
             frame_offset += 0x200;
@@ -202,49 +201,28 @@ static void omap_update_display(void *opaque)
     if (!ds_get_bits_per_pixel(omap_lcd->state))
         return;
-    line = 0;
+    first = 0;
     height = omap_lcd->height;
     if (omap_lcd->subpanel & (1 << 31)) {
         if (omap_lcd->subpanel & (1 << 29))
-            line = (omap_lcd->subpanel >> 16) & 0x3ff;
+            first = (omap_lcd->subpanel >> 16) & 0x3ff;
         else
             height = (omap_lcd->subpanel >> 16) & 0x3ff;
         /* TODO: fill the rest of the panel with DPD */
     }
+
     step = width * bpp >> 3;
-    scanline = frame_base + step * line;
-    s = (uint8_t *) (phys_ram_base + scanline);
-    d = ds_get_data(omap_lcd->state);
     linesize = ds_get_linesize(omap_lcd->state);
-
-    dirty[0] = dirty[1] =
-            cpu_physical_memory_get_dirty(scanline, VGA_DIRTY_FLAG);
-    minline = height;
-    maxline = line;
-    for (; line < height; line ++) {
-        newline = scanline + step;
-        for (x = scanline + TARGET_PAGE_SIZE; x < newline;
-                        x += TARGET_PAGE_SIZE) {
-            dirty[1] = cpu_physical_memory_get_dirty(x, VGA_DIRTY_FLAG);
-            dirty[0] |= dirty[1];
-        }
-        if (dirty[0] || omap_lcd->invalidate) {
-            draw_line(d, s, width, omap_lcd->palette);
-            if (line < minline)
-                minline = line;
-            maxline = line + 1;
-        }
-        scanline = newline;
-        dirty[0] = dirty[1];
-        s += step;
-        d += linesize;
-    }
-
-    if (maxline >= minline) {
-        dpy_update(omap_lcd->state, 0, minline, width, maxline);
-        cpu_physical_memory_reset_dirty(frame_base + step * minline,
-                        frame_base + step * maxline, VGA_DIRTY_FLAG);
+    framebuffer_update_display(omap_lcd->state,
+                               frame_base, width, height,
+                               step, linesize, 0,
+                               omap_lcd->invalidate,
+                               draw_line, omap_lcd->palette,
+                               &first, &last);
+    if (first >= 0) {
+        dpy_update(omap_lcd->state, 0, first, width, last - first + 1);
     }
+    omap_lcd->invalidate = 0;
 }
 static int ppm_save(const char *filename, uint8_t *data,
@@ -336,25 +314,13 @@ static void omap_lcd_update(struct omap_lcd_panel_s *s) {
         return;
     }
-     if (s->dma->src == imif) {
-        /* Framebuffers are in SRAM */
-        s->dma->phys_framebuffer[0] = s->imif_base +
-                s->dma->src_f1_top - OMAP_IMIF_BASE;
-
-        s->dma->phys_framebuffer[1] = s->imif_base +
-                s->dma->src_f2_top - OMAP_IMIF_BASE;
-    } else {
-        /* Framebuffers are in RAM */
-        s->dma->phys_framebuffer[0] = s->emiff_base +
-                s->dma->src_f1_top - OMAP_EMIFF_BASE;
-
-        s->dma->phys_framebuffer[1] = s->emiff_base +
-                s->dma->src_f2_top - OMAP_EMIFF_BASE;
-    }
+    s->dma->phys_framebuffer[0] = s->dma->src_f1_top;
+    s->dma->phys_framebuffer[1] = s->dma->src_f2_top;
     if (s->plm != 2 && !s->palette_done) {
-        memcpy(s->palette, phys_ram_base +
-                s->dma->phys_framebuffer[s->dma->current_frame], 0x200);
+        cpu_physical_memory_read(
+            s->dma->phys_framebuffer[s->dma->current_frame],
+            (void *)s->palette, 0x200);
         s->palette_done = 1;
         omap_lcd_interrupts(s);
     }
@@ -10,6 +10,7 @@
 #include "hw.h"
 #include "primecell.h"
 #include "console.h"
+#include "framebuffer.h"
 #define PL110_CR_EN   0x001
 #define PL110_CR_BGR  0x100
@@ -61,8 +62,6 @@ static const unsigned char pl110_versatile_id[] =
 #include "pixel_ops.h"
-typedef void (*drawfn)(uint32_t *, uint8_t *, const uint8_t *, int);
-
 #define BITS 8
 #include "pl110_template.h"
 #define BITS 15
@@ -84,17 +83,11 @@ static void pl110_update_display(void *opaque)
     pl110_state *s = (pl110_state *)opaque;
     drawfn* fntable;
     drawfn fn;
-    uint32_t *pallette;
-    uint32_t addr;
-    uint32_t base;
     int dest_width;
     int src_width;
-    uint8_t *dest;
-    uint8_t *src;
-    int first, last = 0;
-    int dirty, new_dirty;
-    int i;
     int bpp_offset;
+    int first;
+    int last;
     if (!pl110_enabled(s))
         return;
@@ -159,47 +152,17 @@ static void pl110_update_display(void *opaque)
         break;
     }
     dest_width *= s->cols;
-    pallette = s->pallette;
-    base = s->upbase;
-    /* HACK: Arm aliases physical memory at 0x80000000.  */
-    if (base > 0x80000000)
-        base -= 0x80000000;
-    src = phys_ram_base + base;
-    dest = ds_get_data(s->ds);
-    first = -1;
-    addr = base;
-
-    dirty = cpu_physical_memory_get_dirty(addr, VGA_DIRTY_FLAG);
-    new_dirty = dirty;
-    for (i = 0; i < s->rows; i++) {
-        if ((addr & ~TARGET_PAGE_MASK) + src_width >= TARGET_PAGE_SIZE) {
-            uint32_t tmp;
-            new_dirty = 0;
-            for (tmp = 0; tmp < src_width; tmp += TARGET_PAGE_SIZE) {
-                new_dirty |= cpu_physical_memory_get_dirty(addr + tmp,
-                                                           VGA_DIRTY_FLAG);
-            }
-        }
-
-        if (dirty || new_dirty || s->invalidate) {
-            fn(pallette, dest, src, s->cols);
-            if (first == -1)
-                first = i;
-            last = i;
-        }
-        dirty = new_dirty;
-        addr += src_width;
-        dest += dest_width;
-        src += src_width;
+    first = 0;
+    framebuffer_update_display(s->ds,
+                               s->upbase, s->cols, s->rows,
+                               src_width, dest_width, 0,
+                               s->invalidate,
+                               fn, s->pallette,
+                               &first, &last);
+    if (first >= 0) {
+        dpy_update(s->ds, 0, first, s->cols, last - first + 1);
     }
-    if (first < 0)
-      return;
-
     s->invalidate = 0;
-    cpu_physical_memory_reset_dirty(base + first * src_width,
-                                    base + (last + 1) * src_width,
-                                    VGA_DIRTY_FLAG);
-    dpy_update(s->ds, 0, first, s->cols, last - first + 1);
 }
 static void pl110_invalidate_display(void * opaque)
@@ -115,8 +115,9 @@ static drawfn glue(pl110_draw_fn_,BITS)[36] =
 #define FN_4(x, y) FN_2(x, y) FN_2(x+2, y)
 #define FN_8(y) FN_4(0, y) FN_4(4, y)
-static void glue(pl110_draw_line1_,NAME)(uint32_t *pallette, uint8_t *d, const uint8_t *src, int width)
+static void glue(pl110_draw_line1_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 {
+    uint32_t *pallette = opaque;
     uint32_t data;
     while (width > 0) {
         data = *(uint32_t *)src;
@@ -142,8 +143,9 @@ static void glue(pl110_draw_line1_,NAME)(uint32_t *pallette, uint8_t *d, const u
     }
 }
-static void glue(pl110_draw_line2_,NAME)(uint32_t *pallette, uint8_t *d, const uint8_t *src, int width)
+static void glue(pl110_draw_line2_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 {
+    uint32_t *pallette = opaque;
     uint32_t data;
     while (width > 0) {
         data = *(uint32_t *)src;
@@ -169,8 +171,9 @@ static void glue(pl110_draw_line2_,NAME)(uint32_t *pallette, uint8_t *d, const u
     }
 }
-static void glue(pl110_draw_line4_,NAME)(uint32_t *pallette, uint8_t *d, const uint8_t *src, int width)
+static void glue(pl110_draw_line4_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 {
+    uint32_t *pallette = opaque;
     uint32_t data;
     while (width > 0) {
         data = *(uint32_t *)src;
@@ -196,8 +199,9 @@ static void glue(pl110_draw_line4_,NAME)(uint32_t *pallette, uint8_t *d, const u
     }
 }
-static void glue(pl110_draw_line8_,NAME)(uint32_t *pallette, uint8_t *d, const uint8_t *src, int width)
+static void glue(pl110_draw_line8_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 {
+    uint32_t *pallette = opaque;
     uint32_t data;
     while (width > 0) {
         data = *(uint32_t *)src;
@@ -219,7 +223,7 @@ static void glue(pl110_draw_line8_,NAME)(uint32_t *pallette, uint8_t *d, const u
     }
 }
-static void glue(pl110_draw_line16_,NAME)(uint32_t *pallette, uint8_t *d, const uint8_t *src, int width)
+static void glue(pl110_draw_line16_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 {
     uint32_t data;
     unsigned int r, g, b;
@@ -265,7 +269,7 @@ static void glue(pl110_draw_line16_,NAME)(uint32_t *pallette, uint8_t *d, const 
     }
 }
-static void glue(pl110_draw_line32_,NAME)(uint32_t *pallette, uint8_t *d, const uint8_t *src, int width)
+static void glue(pl110_draw_line32_,NAME)(void *opaque, uint8_t *d, const uint8_t *src, int width, int deststep)
 {
     uint32_t data;
     unsigned int r, g, b;
@@ -13,8 +13,7 @@
 #include "pixel_ops.h"
 /* FIXME: For graphic_rotate. Should probably be done in common code.  */
 #include "sysemu.h"
-
-typedef void (*drawfn)(uint32_t *, uint8_t *, const uint8_t *, int, int);
+#include "framebuffer.h"
 struct pxa2xx_lcdc_s {
     qemu_irq irq;
@@ -56,7 +55,7 @@ struct pxa2xx_lcdc_s {
         int up;
         uint8_t palette[1024];
         uint8_t pbuffer[1024];
-        void (*redraw)(struct pxa2xx_lcdc_s *s, uint8_t *fb,
+        void (*redraw)(struct pxa2xx_lcdc_s *s, target_phys_addr_t addr,
                         int *miny, int *maxy);
         target_phys_addr_t descriptor;
@@ -669,18 +668,15 @@ static void pxa2xx_palette_parse(struct pxa2xx_lcdc_s *s, int ch, int bpp)
 }
 static void pxa2xx_lcdc_dma0_redraw_horiz(struct pxa2xx_lcdc_s *s,
-                uint8_t *fb, int *miny, int *maxy)
+                target_phys_addr_t addr, int *miny, int *maxy)
 {
-    int y, src_width, dest_width, dirty[2];
-    uint8_t *src, *dest;
-    ram_addr_t x, addr, new_addr, start, end;
+    int src_width, dest_width;
     drawfn fn = 0;
     if (s->dest_width)
         fn = s->line_fn[s->transp][s->bpp];
     if (!fn)
         return;
-    src = fb;
     src_width = (s->xres + 3) & ~3;     /* Pad to a 4 pixels multiple */
     if (s->bpp == pxa_lcdc_19pbpp || s->bpp == pxa_lcdc_18pbpp)
         src_width *= 3;
@@ -689,54 +685,25 @@ static void pxa2xx_lcdc_dma0_redraw_horiz(struct pxa2xx_lcdc_s *s,
     else if (s->bpp > pxa_lcdc_8bpp)
         src_width *= 2;
-    dest = ds_get_data(s->ds);
     dest_width = s->xres * s->dest_width;
-
-    addr = (ram_addr_t) (fb - phys_ram_base);
-    start = addr + s->yres * src_width;
-    end = addr;
-    dirty[0] = dirty[1] = cpu_physical_memory_get_dirty(addr, VGA_DIRTY_FLAG);
-    for (y = 0; y < s->yres; y ++) {
-        new_addr = addr + src_width;
-        for (x = addr + TARGET_PAGE_SIZE; x < new_addr;
-                        x += TARGET_PAGE_SIZE) {
-            dirty[1] = cpu_physical_memory_get_dirty(x, VGA_DIRTY_FLAG);
-            dirty[0] |= dirty[1];
-        }
-        if (dirty[0] || s->invalidated) {
-            fn((uint32_t *) s->dma_ch[0].palette,
-                            dest, src, s->xres, s->dest_width);
-            if (addr < start)
-                start = addr;
-            end = new_addr;
-            if (y < *miny)
-                *miny = y;
-            if (y >= *maxy)
-                *maxy = y + 1;
-        }
-        addr = new_addr;
-        dirty[0] = dirty[1];
-        src += src_width;
-        dest += dest_width;
-    }
-
-    if (end > start)
-        cpu_physical_memory_reset_dirty(start, end, VGA_DIRTY_FLAG);
+    *miny = 0;
+    framebuffer_update_display(s->ds,
+                               addr, s->xres, s->yres,
+                               src_width, dest_width, s->dest_width,
+                               s->invalidated,
+                               fn, s->dma_ch[0].palette, miny, maxy);
 }
 static void pxa2xx_lcdc_dma0_redraw_vert(struct pxa2xx_lcdc_s *s,
-                uint8_t *fb, int *miny, int *maxy)
+               target_phys_addr_t addr, int *miny, int *maxy)
 {
-    int y, src_width, dest_width, dirty[2];
-    uint8_t *src, *dest;
-    ram_addr_t x, addr, new_addr, start, end;
+    int src_width, dest_width;
     drawfn fn = 0;
     if (s->dest_width)
         fn = s->line_fn[s->transp][s->bpp];
     if (!fn)
         return;
-    src = fb;
     src_width = (s->xres + 3) & ~3;     /* Pad to a 4 pixels multiple */
     if (s->bpp == pxa_lcdc_19pbpp || s->bpp == pxa_lcdc_18pbpp)
         src_width *= 3;
@@ -746,38 +713,13 @@ static void pxa2xx_lcdc_dma0_redraw_vert(struct pxa2xx_lcdc_s *s,
         src_width *= 2;
     dest_width = s->yres * s->dest_width;
-    dest = ds_get_data(s->ds) + dest_width * (s->xres - 1);
-
-    addr = (ram_addr_t) (fb - phys_ram_base);
-    start = addr + s->yres * src_width;
-    end = addr;
-    x = addr + TARGET_PAGE_SIZE;
-    dirty[0] = dirty[1] = cpu_physical_memory_get_dirty(start, VGA_DIRTY_FLAG);
-    for (y = 0; y < s->yres; y ++) {
-        new_addr = addr + src_width;
-        for (; x < new_addr; x += TARGET_PAGE_SIZE) {
-            dirty[1] = cpu_physical_memory_get_dirty(x, VGA_DIRTY_FLAG);
-            dirty[0] |= dirty[1];
-        }
-        if (dirty[0] || s->invalidated) {
-            fn((uint32_t *) s->dma_ch[0].palette,
-                            dest, src, s->xres, -dest_width);
-            if (addr < start)
-                start = addr;
-            end = new_addr;
-            if (y < *miny)
-                *miny = y;
-            if (y >= *maxy)
-                *maxy = y + 1;
-        }
-        addr = new_addr;
-        dirty[0] = dirty[1];
-        src += src_width;
-        dest += s->dest_width;
-    }
-
-    if (end > start)
-        cpu_physical_memory_reset_dirty(start, end, VGA_DIRTY_FLAG);
+    *miny = 0;
+    framebuffer_update_display(s->ds,
+                               addr, s->xres, s->yres,
+                               src_width, s->dest_width, -dest_width,
+                               s->invalidated,
+                               fn, s->dma_ch[0].palette,
+                               miny, maxy);
 }
 static void pxa2xx_lcdc_resize(struct pxa2xx_lcdc_s *s)
@@ -803,7 +745,6 @@ static void pxa2xx_lcdc_resize(struct pxa2xx_lcdc_s *s)
 static void pxa2xx_update_display(void *opaque)
 {
     struct pxa2xx_lcdc_s *s = (struct pxa2xx_lcdc_s *) opaque;
-    uint8_t *fb;
     target_phys_addr_t fbptr;
     int miny, maxy;
     int ch;
@@ -829,13 +770,11 @@ static void pxa2xx_update_display(void *opaque)
                 pxa2xx_dma_ber_set(s, ch);
                 continue;
             }
-            fbptr -= PXA2XX_SDRAM_BASE;
-            fb = phys_ram_base + fbptr;
             if (s->dma_ch[ch].command & LDCMD_PAL) {
-                memcpy(s->dma_ch[ch].pbuffer, fb,
-                                MAX(LDCMD_LENGTH(s->dma_ch[ch].command),
-                                sizeof(s->dma_ch[ch].pbuffer)));
+                cpu_physical_memory_read(fbptr, s->dma_ch[ch].pbuffer,
+                    MAX(LDCMD_LENGTH(s->dma_ch[ch].command),
+                        sizeof(s->dma_ch[ch].pbuffer)));
                 pxa2xx_palette_parse(s, ch, s->bpp);
             } else {
                 /* Do we need to reparse palette */
@@ -845,7 +784,7 @@ static void pxa2xx_update_display(void *opaque)
                 /* ACK frame start */
                 pxa2xx_dma_sof_set(s, ch);
-                s->dma_ch[ch].redraw(s, fb, &miny, &maxy);
+                s->dma_ch[ch].redraw(s, fbptr, &miny, &maxy);
                 s->invalidated = 0;
                 /* ACK frame completed */
@@ -859,10 +798,12 @@ static void pxa2xx_update_display(void *opaque)
         s->status[0] |= LCSR0_LDD;
     }
-    if (s->orientation)
-        dpy_update(s->ds, miny, 0, maxy, s->xres);
-    else
-        dpy_update(s->ds, 0, miny, s->xres, maxy);
+    if (miny >= 0) {
+        if (s->orientation)
+            dpy_update(s->ds, miny, 0, maxy, s->xres);
+        else
+            dpy_update(s->ds, 0, miny, s->xres, maxy);
+    }
     pxa2xx_lcdc_int_update(s);
     qemu_irq_raise(s->vsync_cb);
@@ -30,9 +30,10 @@
 #define FN_2(x)		FN(x + 1) FN(x)
 #define FN_4(x)		FN_2(x + 2) FN_2(x)
-static void glue(pxa2xx_draw_line2_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line2_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
+    uint32_t *palette = opaque;
     uint32_t data;
     while (width > 0) {
         data = *(uint32_t *) src;
@@ -54,9 +55,10 @@ static void glue(pxa2xx_draw_line2_, BITS)(uint32_t *palette,
     }
 }
-static void glue(pxa2xx_draw_line4_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line4_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
+    uint32_t *palette = opaque;
     uint32_t data;
     while (width > 0) {
         data = *(uint32_t *) src;
@@ -78,9 +80,10 @@ static void glue(pxa2xx_draw_line4_, BITS)(uint32_t *palette,
     }
 }
-static void glue(pxa2xx_draw_line8_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line8_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
+    uint32_t *palette = opaque;
     uint32_t data;
     while (width > 0) {
         data = *(uint32_t *) src;
@@ -102,7 +105,7 @@ static void glue(pxa2xx_draw_line8_, BITS)(uint32_t *palette,
     }
 }
-static void glue(pxa2xx_draw_line16_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line16_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
     uint32_t data;
@@ -130,7 +133,7 @@ static void glue(pxa2xx_draw_line16_, BITS)(uint32_t *palette,
     }
 }
-static void glue(pxa2xx_draw_line16t_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line16t_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
     uint32_t data;
@@ -166,7 +169,7 @@ static void glue(pxa2xx_draw_line16t_, BITS)(uint32_t *palette,
     }
 }
-static void glue(pxa2xx_draw_line18_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line18_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
     uint32_t data;
@@ -188,7 +191,7 @@ static void glue(pxa2xx_draw_line18_, BITS)(uint32_t *palette,
 }
 /* The wicked packed format */
-static void glue(pxa2xx_draw_line18p_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line18p_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
     uint32_t data[3];
@@ -236,7 +239,7 @@ static void glue(pxa2xx_draw_line18p_, BITS)(uint32_t *palette,
     }
 }
-static void glue(pxa2xx_draw_line19_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line19_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
     uint32_t data;
@@ -262,7 +265,7 @@ static void glue(pxa2xx_draw_line19_, BITS)(uint32_t *palette,
 }
 /* The wicked packed format */
-static void glue(pxa2xx_draw_line19p_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line19p_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
     uint32_t data[3];
@@ -326,7 +329,7 @@ static void glue(pxa2xx_draw_line19p_, BITS)(uint32_t *palette,
     }
 }
-static void glue(pxa2xx_draw_line24_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line24_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
     uint32_t data;
@@ -347,7 +350,7 @@ static void glue(pxa2xx_draw_line24_, BITS)(uint32_t *palette,
     }
 }
-static void glue(pxa2xx_draw_line24t_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line24t_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
     uint32_t data;
@@ -372,7 +375,7 @@ static void glue(pxa2xx_draw_line24t_, BITS)(uint32_t *palette,
     }
 }
-static void glue(pxa2xx_draw_line25_, BITS)(uint32_t *palette,
+static void glue(pxa2xx_draw_line25_, BITS)(void *opaque,
                 uint8_t *dest, const uint8_t *src, int width, int deststep)
 {
     uint32_t data;