aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorBALATON Zoltan <balaton@eik.bme.hu>2018-07-04 11:40:58 +0200
committerDavid Gibson <david@gibson.dropbear.id.au>2018-07-07 12:12:27 +1000
commit33159dd7ce2ccd14ab31062d80632297e04e46cf (patch)
tree42464ca40ada6a48dd62305070e63eb9322b2d8a
parent06cb926aaa51970fc009245bb5e15700c19a56f8 (diff)
downloadqemu-arm-33159dd7ce2ccd14ab31062d80632297e04e46cf.tar.gz
sm501: Fix support for non-zero frame buffer start address
Display updates and drawing hardware cursor did not work when frame buffer address was non-zero. Fix this by taking the frame buffer address into account in these cases. This fixes screen dragging on AmigaOS. Based on patch by Sebastian Bauer. Signed-off-by: Sebastian Bauer <mail@sebastianbauer.info> Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
-rw-r--r--hw/display/sm501.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/hw/display/sm501.c b/hw/display/sm501.c
index ebd139006e..10ee008eb2 100644
--- a/hw/display/sm501.c
+++ b/hw/display/sm501.c
@@ -586,6 +586,11 @@ static uint32_t get_local_mem_size_index(uint32_t size)
return index;
}
+static ram_addr_t get_fb_addr(SM501State *s, int crt)
+{
+ return (crt ? s->dc_crt_fb_addr : s->dc_panel_fb_addr) & 0x3FFFFF0;
+}
+
static inline int get_width(SM501State *s, int crt)
{
int width = crt ? s->dc_crt_h_total : s->dc_panel_h_total;
@@ -688,7 +693,8 @@ static inline void hwc_invalidate(SM501State *s, int crt)
start *= w * bpp;
end *= w * bpp;
- memory_region_set_dirty(&s->local_mem_region, start, end - start);
+ memory_region_set_dirty(&s->local_mem_region,
+ get_fb_addr(s, crt) + start, end - start);
}
static void sm501_2d_operation(SM501State *s)
@@ -1213,6 +1219,9 @@ static void sm501_disp_ctrl_write(void *opaque, hwaddr addr,
break;
case SM501_DC_PANEL_FB_ADDR:
s->dc_panel_fb_addr = value & 0x8FFFFFF0;
+ if (value & 0x8000000) {
+ qemu_log_mask(LOG_UNIMP, "Panel external memory not supported\n");
+ }
break;
case SM501_DC_PANEL_FB_OFFSET:
s->dc_panel_fb_offset = value & 0x3FF03FF0;
@@ -1273,6 +1282,9 @@ static void sm501_disp_ctrl_write(void *opaque, hwaddr addr,
break;
case SM501_DC_CRT_FB_ADDR:
s->dc_crt_fb_addr = value & 0x8FFFFFF0;
+ if (value & 0x8000000) {
+ qemu_log_mask(LOG_UNIMP, "CRT external memory not supported\n");
+ }
break;
case SM501_DC_CRT_FB_OFFSET:
s->dc_crt_fb_offset = value & 0x3FF03FF0;
@@ -1615,7 +1627,7 @@ static void sm501_update_display(void *opaque)
draw_hwc_line_func *draw_hwc_line = NULL;
int full_update = 0;
int y_start = -1;
- ram_addr_t offset = 0;
+ ram_addr_t offset;
uint32_t *palette;
uint8_t hwc_palette[3 * 3];
uint8_t *hwc_src = NULL;
@@ -1672,9 +1684,10 @@ static void sm501_update_display(void *opaque)
}
/* draw each line according to conditions */
+ offset = get_fb_addr(s, crt);
snap = memory_region_snapshot_and_clear_dirty(&s->local_mem_region,
offset, width * height * src_bpp, DIRTY_MEMORY_VGA);
- for (y = 0, offset = 0; y < height; y++, offset += width * src_bpp) {
+ for (y = 0; y < height; y++, offset += width * src_bpp) {
int update, update_hwc;
/* check if hardware cursor is enabled and we're within its range */