[Qemu-devel] [PATCH 04/23] framebuffer: drop use of cpu_get_physical_page_desc()

[Avi Kivity]

cpu_get_physical_page_desc() is tied into the memory core's
innards, replace it with uses of the API.

Signed-off-by: Avi Kivity <address@hidden>
---
 hw/framebuffer.c     |   30 +++++++++++++-----------------
 hw/framebuffer.h     |    3 +++
 hw/milkymist-vgafb.c |    2 +-
 hw/omap_lcdc.c       |    4 +++-
 hw/pl110.c           |    2 +-
 hw/pxa2xx_lcd.c      |   10 ++++++----
 6 files changed, 27 insertions(+), 24 deletions(-)

diff --git a/hw/framebuffer.c b/hw/framebuffer.c
index 56cf16e..3f4e773 100644
--- a/hw/framebuffer.c
+++ b/hw/framebuffer.c
@@ -22,6 +22,7 @@
    
 void framebuffer_update_display(
     DisplayState *ds,
+    MemoryRegion *address_space,
     target_phys_addr_t base,
     int cols, /* Width in pixels.  */
     int rows, /* Leight in pixels.  */
@@ -42,27 +43,21 @@ void framebuffer_update_display(
     int dirty;
     int i;
     ram_addr_t addr;
-    ram_addr_t pd;
-    ram_addr_t pd2;
+    MemoryRegionSection mem_section;
+    MemoryRegion *mem;
 
     i = *first_row;
     *first_row = -1;
     src_len = src_width * rows;
 
     cpu_physical_sync_dirty_bitmap(base, 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)) {
+    mem_section = memory_region_find(address_space, base, src_len);
+    if (mem_section.size != src_len || !memory_region_is_ram(mem_section.mr)) {
         return;
     }
+    mem = mem_section.mr;
+    assert(mem);
+    assert(mem_section.offset_within_address_space == base);
 
     src_base = cpu_physical_memory_map(base, &src_len, 0);
     /* If we can't map the framebuffer then bail.  We could try harder,
@@ -82,7 +77,7 @@ void framebuffer_update_display(
         dest -= dest_row_pitch * (rows - 1);
     }
     first = -1;
-    addr = pd;
+    addr = mem_section.offset_within_region;
 
     addr += i * src_width;
     src += i * src_width;
@@ -93,8 +88,8 @@ void framebuffer_update_display(
         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 |= memory_region_get_dirty(mem, addr + dirty_offset,
+                                             DIRTY_MEMORY_VGA);
             dirty_offset += TARGET_PAGE_SIZE;
         }
 
@@ -112,7 +107,8 @@ void framebuffer_update_display(
     if (first < 0) {
         return;
     }
-    cpu_physical_memory_reset_dirty(pd, pd + src_len, VGA_DIRTY_FLAG);
+    memory_region_reset_dirty(mem, mem_section.offset_within_region, src_len,
+                              DIRTY_MEMORY_VGA);
     *first_row = first;
     *last_row = last;
     return;
diff --git a/hw/framebuffer.h b/hw/framebuffer.h
index a3a2146..527a6b8 100644
--- a/hw/framebuffer.h
+++ b/hw/framebuffer.h
@@ -1,12 +1,15 @@
 #ifndef QEMU_FRAMEBUFFER_H
 #define QEMU_FRAMEBUFFER_H
 
+#include "memory.h"
+
 /* Framebuffer device helper routines.  */
 
 typedef void (*drawfn)(void *, uint8_t *, const uint8_t *, int, int);
 
 void framebuffer_update_display(
     DisplayState *ds,
+    MemoryRegion *address_space,
     target_phys_addr_t base,
     int cols,
     int rows,
diff --git a/hw/milkymist-vgafb.c b/hw/milkymist-vgafb.c
index 01cd309..108115e 100644
--- a/hw/milkymist-vgafb.c
+++ b/hw/milkymist-vgafb.c
@@ -120,7 +120,7 @@ static void vgafb_update_display(void *opaque)
         break;
     }
 
-    framebuffer_update_display(s->ds,
+    framebuffer_update_display(s->ds, sysbus_address_space(&s->busdev),
                                s->regs[R_BASEADDRESS] + s->fb_offset,
                                s->regs[R_HRES],
                                s->regs[R_VRES],
diff --git a/hw/omap_lcdc.c b/hw/omap_lcdc.c
index 8484f70..f265306 100644
--- a/hw/omap_lcdc.c
+++ b/hw/omap_lcdc.c
@@ -22,6 +22,7 @@
 #include "framebuffer.h"
 
 struct omap_lcd_panel_s {
+    MemoryRegion *sysmem;
     MemoryRegion iomem;
     qemu_irq irq;
     DisplayState *state;
@@ -211,7 +212,7 @@ static void omap_update_display(void *opaque)
 
     step = width * bpp >> 3;
     linesize = ds_get_linesize(omap_lcd->state);
-    framebuffer_update_display(omap_lcd->state,
+    framebuffer_update_display(omap_lcd->state, omap_lcd->sysmem,
                                frame_base, width, height,
                                step, linesize, 0,
                                omap_lcd->invalidate,
@@ -440,6 +441,7 @@ struct omap_lcd_panel_s *omap_lcdc_init(MemoryRegion 
*sysmem,
 
     s->irq = irq;
     s->dma = dma;
+    s->sysmem = sysmem;
     omap_lcdc_reset(s);
 
     memory_region_init_io(&s->iomem, &omap_lcdc_ops, s, "omap.lcdc", 0x100);
diff --git a/hw/pl110.c b/hw/pl110.c
index cc1eb6d..303a9bc 100644
--- a/hw/pl110.c
+++ b/hw/pl110.c
@@ -229,7 +229,7 @@ static void pl110_update_display(void *opaque)
     }
     dest_width *= s->cols;
     first = 0;
-    framebuffer_update_display(s->ds,
+    framebuffer_update_display(s->ds, sysbus_address_space(&s->busdev),
                                s->upbase, s->cols, s->rows,
                                src_width, dest_width, 0,
                                s->invalidate,
diff --git a/hw/pxa2xx_lcd.c b/hw/pxa2xx_lcd.c
index fd23d63..5dd4ef0 100644
--- a/hw/pxa2xx_lcd.c
+++ b/hw/pxa2xx_lcd.c
@@ -30,6 +30,7 @@ struct DMAChannel {
 };
 
 struct PXA2xxLCDState {
+    MemoryRegion *sysmem;
     MemoryRegion iomem;
     qemu_irq irq;
     int irqlevel;
@@ -681,7 +682,7 @@ static void pxa2xx_lcdc_dma0_redraw_rot0(PXA2xxLCDState *s,
 
     dest_width = s->xres * s->dest_width;
     *miny = 0;
-    framebuffer_update_display(s->ds,
+    framebuffer_update_display(s->ds, s->sysmem,
                                addr, s->xres, s->yres,
                                src_width, dest_width, s->dest_width,
                                s->invalidated,
@@ -708,7 +709,7 @@ static void pxa2xx_lcdc_dma0_redraw_rot90(PXA2xxLCDState *s,
 
     dest_width = s->yres * s->dest_width;
     *miny = 0;
-    framebuffer_update_display(s->ds,
+    framebuffer_update_display(s->ds, s->sysmem,
                                addr, s->xres, s->yres,
                                src_width, s->dest_width, -dest_width,
                                s->invalidated,
@@ -739,7 +740,7 @@ static void pxa2xx_lcdc_dma0_redraw_rot180(PXA2xxLCDState 
*s,
 
     dest_width = s->xres * s->dest_width;
     *miny = 0;
-    framebuffer_update_display(s->ds,
+    framebuffer_update_display(s->ds, s->sysmem,
                                addr, s->xres, s->yres,
                                src_width, -dest_width, -s->dest_width,
                                s->invalidated,
@@ -769,7 +770,7 @@ static void pxa2xx_lcdc_dma0_redraw_rot270(PXA2xxLCDState 
*s,
 
     dest_width = s->yres * s->dest_width;
     *miny = 0;
-    framebuffer_update_display(s->ds,
+    framebuffer_update_display(s->ds, s->sysmem,
                                addr, s->xres, s->yres,
                                src_width, -s->dest_width, dest_width,
                                s->invalidated,
@@ -985,6 +986,7 @@ static int pxa2xx_lcdc_post_load(void *opaque, int 
version_id)
     s = (PXA2xxLCDState *) g_malloc0(sizeof(PXA2xxLCDState));
     s->invalidated = 1;
     s->irq = irq;
+    s->sysmem = sysmem;
 
     pxa2xx_lcdc_orientation(s, graphic_rotate);
 
-- 
1.7.7.1