memory: change dirty getting API to take a size

Instead of each device knowing or guessing the guest page size,
just pass the desired size of dirtied memory area.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

5 files changed, 21 insertions, 38 deletions

diff --git a/hw/framebuffer.c b/hw/framebuffer.c
index 6bf48dc046..ea122fb266 100644
--- a/hw/framebuffer.c
+++ b/hw/framebuffer.c
@@ -87,15 +87,8 @@ void framebuffer_update_display(
     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 |= memory_region_get_dirty(mem, addr + dirty_offset,
+        dirty = memory_region_get_dirty(mem, addr, addr + src_width,
                                              DIRTY_MEMORY_VGA);
-            dirty_offset += TARGET_PAGE_SIZE;
-        }
-
         if (dirty || invalidate) {
             fn(opaque, dest, src, cols, dest_col_pitch);
             if (first == -1)
diff --git a/hw/g364fb.c b/hw/g364fb.c
index f47acc51c2..66d0044c06 100644
--- a/hw/g364fb.c
+++ b/hw/g364fb.c
@@ -62,7 +62,8 @@ typedef struct G364State {
 
 static inline int check_dirty(G364State *s, ram_addr_t page)
 {
-    return memory_region_get_dirty(&s->mem_vram, page, DIRTY_MEMORY_VGA);
+    return memory_region_get_dirty(&s->mem_vram, page, G364_PAGE_SIZE,
+                                   DIRTY_MEMORY_VGA);
 }
 
 static inline void reset_dirty(G364State *s,
diff --git a/hw/sm501.c b/hw/sm501.c
index 09c5894cf9..94c0abf4cb 100644
--- a/hw/sm501.c
+++ b/hw/sm501.c
@@ -1323,15 +1323,12 @@ static void sm501_draw_crt(SM501State * s)
     for (y = 0; y < height; y++) {
 	int update_hwc = draw_hwc_line ? within_hwc_y_range(s, y, 1) : 0;
 	int update = full_update || update_hwc;
-	ram_addr_t page0 = offset & TARGET_PAGE_MASK;
-	ram_addr_t page1 = (offset + width * src_bpp - 1) & TARGET_PAGE_MASK;
-	ram_addr_t page;
+        ram_addr_t page0 = offset;
+        ram_addr_t page1 = offset + width * src_bpp - 1;
 
 	/* check dirty flags for each line */
-	for (page = page0; page <= page1; page += TARGET_PAGE_SIZE)
-            if (memory_region_get_dirty(&s->local_mem_region, page,
-                                        DIRTY_MEMORY_VGA))
-		update = 1;
+        update = memory_region_get_dirty(&s->local_mem_region, page0, page1,
+                                         DIRTY_MEMORY_VGA);
 
 	/* draw line and change status */
 	if (update) {
diff --git a/hw/tcx.c b/hw/tcx.c
index f400f92307..ceb94c74a7 100644
--- a/hw/tcx.c
+++ b/hw/tcx.c
@@ -178,15 +178,13 @@ static inline int check_dirty(TCXState *s, ram_addr_t page, ram_addr_t page24,
                               ram_addr_t cpage)
 {
     int ret;
-    unsigned int off;
-
-    ret = memory_region_get_dirty(&s->vram_mem, page, DIRTY_MEMORY_VGA);
-    for (off = 0; off < TARGET_PAGE_SIZE * 4; off += TARGET_PAGE_SIZE) {
-        ret |= memory_region_get_dirty(&s->vram_mem, page24 + off,
-                                       DIRTY_MEMORY_VGA);
-        ret |= memory_region_get_dirty(&s->vram_mem, cpage + off,
-                                       DIRTY_MEMORY_VGA);
-    }
+
+    ret = memory_region_get_dirty(&s->vram_mem, page, TARGET_PAGE_SIZE,
+                                  DIRTY_MEMORY_VGA);
+    ret |= memory_region_get_dirty(&s->vram_mem, page24, TARGET_PAGE_SIZE * 4,
+                                   DIRTY_MEMORY_VGA);
+    ret |= memory_region_get_dirty(&s->vram_mem, cpage, TARGET_PAGE_SIZE * 4,
+                                   DIRTY_MEMORY_VGA);
     return ret;
 }
 
@@ -245,7 +243,8 @@ static void tcx_update_display(void *opaque)
     }
 
     for(y = 0; y < ts->height; y += 4, page += TARGET_PAGE_SIZE) {
-        if (memory_region_get_dirty(&ts->vram_mem, page, DIRTY_MEMORY_VGA)) {
+        if (memory_region_get_dirty(&ts->vram_mem, page, TARGET_PAGE_SIZE,
+                                    DIRTY_MEMORY_VGA)) {
             if (y_start < 0)
                 y_start = y;
             if (page < page_min)
diff --git a/hw/vga.c b/hw/vga.c
index 4dc2610314..cf9b39ffe6 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -1742,17 +1742,10 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
         if (!(s->cr[0x17] & 2)) {
             addr = (addr & ~0x8000) | ((y1 & 2) << 14);
         }
-        page0 = addr & TARGET_PAGE_MASK;
-        page1 = (addr + bwidth - 1) & TARGET_PAGE_MASK;
-        update = full_update |
-            memory_region_get_dirty(&s->vram, page0, DIRTY_MEMORY_VGA) |
-            memory_region_get_dirty(&s->vram, page1, DIRTY_MEMORY_VGA);
-        if ((page1 - page0) > TARGET_PAGE_SIZE) {
-            /* if wide line, can use another page */
-            update |= memory_region_get_dirty(&s->vram,
-                                              page0 + TARGET_PAGE_SIZE,
-                                              DIRTY_MEMORY_VGA);
-        }
+        page0 = addr;
+        page1 = addr + bwidth - 1;
+        update = memory_region_get_dirty(&s->vram, page0, page1,
+                                         DIRTY_MEMORY_VGA);
         /* explicit invalidation for the hardware cursor */
         update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1;
         if (update) {
@@ -1798,7 +1791,7 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
     if (page_max >= page_min) {
         memory_region_reset_dirty(&s->vram,
                                   page_min,
-                                  page_max + TARGET_PAGE_SIZE - page_min,
+                                  page_max - page_min,
                                   DIRTY_MEMORY_VGA);
     }
     memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4);