Hi Sven,
On 10/22/19 10:59 PM, Sven Schnelle wrote:
This adds emulation of Artist graphics good enough
to get a Text console on both Linux and HP-UX. The
X11 server from HP-UX also works.
Signed-off-by: Sven Schnelle <sv...@stackframe.org>
---
hw/display/Kconfig | 3 +
hw/display/Makefile.objs | 1 +
hw/display/artist.c | 1336 ++++++++++++++++++++++++++++++++++++++
hw/display/trace-events | 9 +
hw/hppa/Kconfig | 1 +
hw/hppa/hppa_hardware.h | 1 +
hw/hppa/machine.c | 10 +
7 files changed, 1361 insertions(+)
create mode 100644 hw/display/artist.c
[...]
+static void fill_window(ARTISTState *s, int startx, int starty,
+ int width, int height)
+{
+ uint32_t offset;
+ uint8_t color = artist_get_color(s);
+ uint8_t *buf;
+ int x, y;
+
+ trace_artist_fill_window(startx, starty, width, height,
+ s->image_bitmap_op, s->control_plane);
+
+ if (s->control_plane != 0) {
+ qemu_log_mask(LOG_UNIMP, "%s: CONTROL_PLANE: %08x\n", __func__,
+ s->control_plane);
+ return;
+ }
+
+ if (s->reg_100080 == 0x7d) {
What is checked here? Can you add a comment about it?
+ height = artist_get_y(s->blockmove_size);
+ s->vram_start += height;
+ }
+
+ buf = s->vram_buffer[ARTIST_BUFFER_AP].data;
+
+ for (y = starty; y < starty + height; y++) {
+ offset = y * s->width;
+
+ for (x = startx; x < startx + width; x++) {
+ artist_rop8(s, buf + offset + x, color);
+ }
+ }
+}
+
[...]
+static void artist_initfn(Object *obj)
+{
+ SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
+ ARTISTState *s = ARTIST(obj);
+
+ memory_region_init_io(&s->reg, obj, &artist_reg_ops, s, "artist.reg",
+ 0x400000);
Easier to read as: 4 * MiB
+ memory_region_init_io(&s->vram_mem, obj, &artist_vram_ops, s,
"artist.vram",
+ 0x800000);
And 8 * MiB.
+ sysbus_init_mmio(sbd, &s->reg);
+ sysbus_init_mmio(sbd, &s->vram_mem);
+}
+
+static void artist_set_buffer(ARTISTState *s, uint8_t **vram, unsigned int idx,
+ int width, int height)
+{
+ struct vram_buffer *buf = s->vram_buffer + idx;
+
+ buf->data = *vram;
+ buf->size = height * width;
+ buf->width = width;
+ buf->height = height;
+ *vram = *vram + buf->size;
+}
+
+static void artist_realizefn(DeviceState *dev, Error **errp)
+{
+ uint8_t *vram;
+
+ ARTISTState *s = ARTIST(dev);
+
+ vram = g_malloc0(4 * 1048576);
Here you can simply use g_malloc(4 * MiB). If you really need
to bzero the VRAM, that should be done in the reset() handler.
+ s->vram = vram;
+ artist_set_buffer(s, &vram, ARTIST_BUFFER_CMAP, 2048, 4);
+ artist_set_buffer(s, &vram, ARTIST_BUFFER_AP, s->width, s->height);
+ artist_set_buffer(s, &vram, ARTIST_BUFFER_CURSOR1, 64, 64);
+ artist_set_buffer(s, &vram, ARTIST_BUFFER_CURSOR2, 64, 64);
+ artist_set_buffer(s, &vram, ARTIST_BUFFER_ATTRIBUTE, 64, 64);
Shouldn't this be done by firmware code? If no firmware, this seems to
belong to reset() too, isn't it?
+
+ /*
+ * no idea whether the cursor is fixed size or not, so assume 32x32 which
+ * seems sufficient for HP-UX X11.
+ */
+ s->cursor_height = 32;
+ s->cursor_width = 32;
+
+ s->con = graphic_console_init(DEVICE(dev), 0, &artist_ops, s);
+ qemu_console_resize(s->con, s->width, s->height);
+}
[...]
