vga: introduce VGADisplayParams

The next patches will introduce more parameters that cause a full
refresh.  Instead of adding arguments to get_offsets and lines to
update_basic_params, do everything through a struct.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 8 insertions, 7 deletions

diff --git a/hw/display/vga_int.h b/hw/display/vga_int.h
index 7cf0d11201..6be61e0428 100644
--- a/hw/display/vga_int.h
+++ b/hw/display/vga_int.h
@@ -56,6 +56,12 @@ struct VGACommonState;
 typedef uint8_t (* vga_retrace_fn)(struct VGACommonState *s);
 typedef void (* vga_update_retrace_info_fn)(struct VGACommonState *s);
 
+typedef struct VGADisplayParams {
+    uint32_t line_offset;
+    uint32_t start_addr;
+    uint32_t line_compare;
+} VGADisplayParams;
+
 typedef struct VGACommonState {
     MemoryRegion *legacy_address_space;
     uint8_t *vram_ptr;
@@ -90,10 +96,7 @@ typedef struct VGACommonState {
     uint8_t palette[768];
     int32_t bank_offset;
     int (*get_bpp)(struct VGACommonState *s);
-    void (*get_offsets)(struct VGACommonState *s,
-                        uint32_t *pline_offset,
-                        uint32_t *pstart_addr,
-                        uint32_t *pline_compare);
+    void (*get_params)(struct VGACommonState *s, VGADisplayParams *params);
     void (*get_resolution)(struct VGACommonState *s,
                         int *pwidth,
                         int *pheight);
@@ -111,9 +114,7 @@ typedef struct VGACommonState {
     int graphic_mode;
     uint8_t shift_control;
     uint8_t double_scan;
-    uint32_t line_offset;
-    uint32_t line_compare;
-    uint32_t start_addr;
+    VGADisplayParams params;
     uint32_t plane_updated;
     uint32_t last_line_offset;
     uint8_t last_cw, last_ch;