* [Qemu-devel] [PATCH 1/2] cg3: make display updates thread safe
2017-05-10 20:52 [Qemu-devel] [PATCH 0/2] cg3/tcx: make display updates thread safe Mark Cave-Ayland
@ 2017-05-10 20:52 ` Mark Cave-Ayland
2017-05-10 20:52 ` [Qemu-devel] [PATCH 2/2] tcx: " Mark Cave-Ayland
2017-05-11 7:39 ` [Qemu-devel] [PATCH 0/2] cg3/tcx: " Gerd Hoffmann
2 siblings, 0 replies; 4+ messages in thread
From: Mark Cave-Ayland @ 2017-05-10 20:52 UTC (permalink / raw)
To: qemu-devel, kraxel
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
hw/display/cg3.c | 41 +++++++++++++++++++++--------------------
1 file changed, 21 insertions(+), 20 deletions(-)
diff --git a/hw/display/cg3.c b/hw/display/cg3.c
index 7ef8a96..1de15a1 100644
--- a/hw/display/cg3.c
+++ b/hw/display/cg3.c
@@ -94,7 +94,8 @@ static void cg3_update_display(void *opaque)
uint32_t dval;
int x, y, y_start;
unsigned int width, height;
- ram_addr_t page, page_min, page_max;
+ ram_addr_t page;
+ DirtyBitmapSnapshot *snap = NULL;
if (surface_bits_per_pixel(surface) != 32) {
return;
@@ -103,29 +104,32 @@ static void cg3_update_display(void *opaque)
height = s->height;
y_start = -1;
- page_min = -1;
- page_max = 0;
- page = 0;
pix = memory_region_get_ram_ptr(&s->vram_mem);
data = (uint32_t *)surface_data(surface);
- memory_region_sync_dirty_bitmap(&s->vram_mem);
+ if (!s->full_update) {
+ memory_region_sync_dirty_bitmap(&s->vram_mem);
+ snap = memory_region_snapshot_and_clear_dirty(&s->vram_mem, 0x0,
+ memory_region_size(&s->vram_mem),
+ DIRTY_MEMORY_VGA);
+ }
+
for (y = 0; y < height; y++) {
- int update = s->full_update;
+ int update;
page = (ram_addr_t)y * width;
- update |= memory_region_get_dirty(&s->vram_mem, page, width,
- DIRTY_MEMORY_VGA);
+
+ if (s->full_update) {
+ update = 1;
+ } else {
+ update = memory_region_snapshot_get_dirty(&s->vram_mem, snap, page,
+ width);
+ }
+
if (update) {
if (y_start < 0) {
y_start = y;
}
- if (page < page_min) {
- page_min = page;
- }
- if (page > page_max) {
- page_max = page;
- }
for (x = 0; x < width; x++) {
dval = *pix++;
@@ -134,7 +138,7 @@ static void cg3_update_display(void *opaque)
}
} else {
if (y_start >= 0) {
- dpy_gfx_update(s->con, 0, y_start, s->width, y - y_start);
+ dpy_gfx_update(s->con, 0, y_start, width, y - y_start);
y_start = -1;
}
pix += width;
@@ -143,17 +147,14 @@ static void cg3_update_display(void *opaque)
}
s->full_update = 0;
if (y_start >= 0) {
- dpy_gfx_update(s->con, 0, y_start, s->width, y - y_start);
- }
- if (page_max >= page_min) {
- memory_region_reset_dirty(&s->vram_mem,
- page_min, page_max - page_min, DIRTY_MEMORY_VGA);
+ dpy_gfx_update(s->con, 0, y_start, width, y - y_start);
}
/* vsync interrupt? */
if (s->regs[0] & CG3_CR_ENABLE_INTS) {
s->regs[1] |= CG3_SR_PENDING_INT;
qemu_irq_raise(s->irq);
}
+ g_free(snap);
}
static void cg3_invalidate_display(void *opaque)
--
1.7.10.4
^ permalink raw reply related [flat|nested] 4+ messages in thread* [Qemu-devel] [PATCH 2/2] tcx: make display updates thread safe
2017-05-10 20:52 [Qemu-devel] [PATCH 0/2] cg3/tcx: make display updates thread safe Mark Cave-Ayland
2017-05-10 20:52 ` [Qemu-devel] [PATCH 1/2] cg3: " Mark Cave-Ayland
@ 2017-05-10 20:52 ` Mark Cave-Ayland
2017-05-11 7:39 ` [Qemu-devel] [PATCH 0/2] cg3/tcx: " Gerd Hoffmann
2 siblings, 0 replies; 4+ messages in thread
From: Mark Cave-Ayland @ 2017-05-10 20:52 UTC (permalink / raw)
To: qemu-devel, kraxel
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
hw/display/tcx.c | 68 +++++++++++++++++++-----------------------------------
1 file changed, 24 insertions(+), 44 deletions(-)
diff --git a/hw/display/tcx.c b/hw/display/tcx.c
index 0e66dcd..6593c1d 100644
--- a/hw/display/tcx.c
+++ b/hw/display/tcx.c
@@ -104,36 +104,23 @@ static void tcx_set_dirty(TCXState *s, ram_addr_t addr, int len)
}
}
-static int tcx_check_dirty(TCXState *s, ram_addr_t addr, int len)
+static int tcx_check_dirty(TCXState *s, DirtyBitmapSnapshot *snap,
+ ram_addr_t addr, int len)
{
int ret;
- ret = memory_region_get_dirty(&s->vram_mem, addr, len, DIRTY_MEMORY_VGA);
+ ret = memory_region_snapshot_get_dirty(&s->vram_mem, snap, addr, len);
if (s->depth == 24) {
- ret |= memory_region_get_dirty(&s->vram_mem,
- s->vram24_offset + addr * 4, len * 4,
- DIRTY_MEMORY_VGA);
- ret |= memory_region_get_dirty(&s->vram_mem,
- s->cplane_offset + addr * 4, len * 4,
- DIRTY_MEMORY_VGA);
+ ret |= memory_region_snapshot_get_dirty(&s->vram_mem, snap,
+ s->vram24_offset + addr * 4, len * 4);
+ ret |= memory_region_snapshot_get_dirty(&s->vram_mem, snap,
+ s->cplane_offset + addr * 4, len * 4);
}
return ret;
}
-static void tcx_reset_dirty(TCXState *s, ram_addr_t addr, int len)
-{
- memory_region_reset_dirty(&s->vram_mem, addr, len, DIRTY_MEMORY_VGA);
-
- if (s->depth == 24) {
- memory_region_reset_dirty(&s->vram_mem, s->vram24_offset + addr * 4,
- len * 4, DIRTY_MEMORY_VGA);
- memory_region_reset_dirty(&s->vram_mem, s->cplane_offset + addr * 4,
- len * 4, DIRTY_MEMORY_VGA);
- }
-}
-
static void update_palette_entries(TCXState *s, int start, int end)
{
DisplaySurface *surface = qemu_console_surface(s->con);
@@ -233,7 +220,8 @@ static void tcx_update_display(void *opaque)
{
TCXState *ts = opaque;
DisplaySurface *surface = qemu_console_surface(ts->con);
- ram_addr_t page, page_min, page_max;
+ ram_addr_t page;
+ DirtyBitmapSnapshot *snap = NULL;
int y, y_start, dd, ds;
uint8_t *d, *s;
@@ -243,22 +231,20 @@ static void tcx_update_display(void *opaque)
page = 0;
y_start = -1;
- page_min = -1;
- page_max = 0;
d = surface_data(surface);
s = ts->vram;
dd = surface_stride(surface);
ds = 1024;
memory_region_sync_dirty_bitmap(&ts->vram_mem);
+ snap = memory_region_snapshot_and_clear_dirty(&ts->vram_mem, 0x0,
+ memory_region_size(&ts->vram_mem),
+ DIRTY_MEMORY_VGA);
+
for (y = 0; y < ts->height; y++, page += ds) {
- if (tcx_check_dirty(ts, page, ds)) {
+ if (tcx_check_dirty(ts, snap, page, ds)) {
if (y_start < 0)
y_start = y;
- if (page < page_min)
- page_min = page;
- if (page > page_max)
- page_max = page;
tcx_draw_line32(ts, d, s, ts->width);
if (y >= ts->cursy && y < ts->cursy + 32 && ts->cursx < ts->width) {
@@ -280,17 +266,15 @@ static void tcx_update_display(void *opaque)
dpy_gfx_update(ts->con, 0, y_start,
ts->width, y - y_start);
}
- /* reset modified pages */
- if (page_max >= page_min) {
- tcx_reset_dirty(ts, page_min, page_max - page_min);
- }
+ g_free(snap);
}
static void tcx24_update_display(void *opaque)
{
TCXState *ts = opaque;
DisplaySurface *surface = qemu_console_surface(ts->con);
- ram_addr_t page, page_min, page_max;
+ ram_addr_t page;
+ DirtyBitmapSnapshot *snap = NULL;
int y, y_start, dd, ds;
uint8_t *d, *s;
uint32_t *cptr, *s24;
@@ -301,8 +285,6 @@ static void tcx24_update_display(void *opaque)
page = 0;
y_start = -1;
- page_min = -1;
- page_max = 0;
d = surface_data(surface);
s = ts->vram;
s24 = ts->vram24;
@@ -311,14 +293,15 @@ static void tcx24_update_display(void *opaque)
ds = 1024;
memory_region_sync_dirty_bitmap(&ts->vram_mem);
+ snap = memory_region_snapshot_and_clear_dirty(&ts->vram_mem, 0x0,
+ memory_region_size(&ts->vram_mem),
+ DIRTY_MEMORY_VGA);
+
for (y = 0; y < ts->height; y++, page += ds) {
- if (tcx_check_dirty(ts, page, ds)) {
+ if (tcx_check_dirty(ts, snap, page, ds)) {
if (y_start < 0)
y_start = y;
- if (page < page_min)
- page_min = page;
- if (page > page_max)
- page_max = page;
+
tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
if (y >= ts->cursy && y < ts->cursy+32 && ts->cursx < ts->width) {
tcx_draw_cursor32(ts, d, y, ts->width);
@@ -341,10 +324,7 @@ static void tcx24_update_display(void *opaque)
dpy_gfx_update(ts->con, 0, y_start,
ts->width, y - y_start);
}
- /* reset modified pages */
- if (page_max >= page_min) {
- tcx_reset_dirty(ts, page_min, page_max - page_min);
- }
+ g_free(snap);
}
static void tcx_invalidate_display(void *opaque)
--
1.7.10.4
^ permalink raw reply related [flat|nested] 4+ messages in thread