[Qemu-devel] [PATCH 2/2] sun4m: Add Sun CG3 framebuffer initialisation function

[Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>]

In order to allow the user to choose the framebuffer for sparc-softmmu, add
-vga tcx and -vga cg3 options to the QEMU command line. If no option is
specified, the default TCX framebuffer is used.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
CC: Blue Swirl <blauwirbel@gmail.com>
CC: Anthony Liguori <aliguori@amazon.com>
CC: Bob Breuer <breuerr@mc.net>
CC: Artyom Tarasenko <atar4qemu@gmail.com>
---
 hw/sparc/sun4m.c        |   60 +++++++++++++++++++++++++++++++++++++++++++++--
 include/sysemu/sysemu.h |    1 +
 vl.c                    |   24 +++++++++++++++++++
 3 files changed, 83 insertions(+), 2 deletions(-)

diff --git a/hw/sparc/sun4m.c b/hw/sparc/sun4m.c
index 94f7950..4c6c450 100644
--- a/hw/sparc/sun4m.c
+++ b/hw/sparc/sun4m.c
@@ -561,6 +561,31 @@ static void tcx_init(hwaddr addr, int vram_size, int width,
     }
 }
 
+static void cg3_init(hwaddr addr, qemu_irq irq, int vram_size, int width,
+                        int height, int depth)
+{
+    DeviceState *dev;
+    SysBusDevice *s;
+
+    dev = qdev_create(NULL, "SUNW,cgthree");
+    qdev_prop_set_uint32(dev, "vram_size", vram_size);
+    qdev_prop_set_uint16(dev, "width", width);
+    qdev_prop_set_uint16(dev, "height", height);
+    qdev_prop_set_uint16(dev, "depth", depth);
+    qdev_prop_set_uint64(dev, "prom_addr", addr);
+    qdev_init_nofail(dev);
+    s = SYS_BUS_DEVICE(dev);
+
+    /* FCode ROM */
+    sysbus_mmio_map(s, 0, addr);
+    /* DAC */
+    sysbus_mmio_map(s, 1, addr + 0x400000ULL);
+    /* 8-bit plane */
+    sysbus_mmio_map(s, 2, addr + 0x800000ULL);
+
+    sysbus_connect_irq(s, 0, irq);
+}
+
 /* NCR89C100/MACIO Internal ID register */
 
 #define TYPE_MACIO_ID_REGISTER "macio_idreg"
@@ -918,8 +943,39 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
     }
     num_vsimms = 0;
     if (num_vsimms == 0) {
-        tcx_init(hwdef->tcx_base, 0x00100000, graphic_width, graphic_height,
-                 graphic_depth);
+        if (vga_interface_type == VGA_CG3) {
+            if (graphic_depth != 8) {
+                fprintf(stderr, "qemu: Unsupported depth: %d\n", graphic_depth);
+                exit(1);
+            }
+
+            if (!(graphic_width == 1024 && graphic_height == 768) &&
+                !(graphic_width == 1152 && graphic_height == 900)) {
+                fprintf(stderr, "qemu: Unsupported resolution: %d x %d\n",
+                        graphic_width, graphic_height);
+                exit(1);
+            }
+
+            /* sbus irq 5 */
+            cg3_init(hwdef->tcx_base, slavio_irq[11], 0x00100000,
+                     graphic_width, graphic_height, graphic_depth);
+        } else {
+            /* If no display specified, default to TCX */
+            if (graphic_depth != 8 && graphic_depth != 24) {
+                fprintf(stderr, "qemu: Unsupported depth: %d\n",
+                        graphic_depth);
+                exit(1);
+            }
+
+            if (!(graphic_width == 1024 && graphic_height == 768)) {
+                fprintf(stderr, "qemu: Unsupported resolution: %d x %d\n",
+                        graphic_width, graphic_height);
+                exit(1);
+            }
+
+            tcx_init(hwdef->tcx_base, 0x00100000, graphic_width, graphic_height,
+                     graphic_depth);
+        }
     }
 
     for (i = num_vsimms; i < MAX_VSIMMS; i++) {
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 495dae8..b90df9a 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -104,6 +104,7 @@ extern int autostart;
 
 typedef enum {
     VGA_NONE, VGA_STD, VGA_CIRRUS, VGA_VMWARE, VGA_XENFB, VGA_QXL,
+    VGA_TCX, VGA_CG3,
 } VGAInterfaceType;
 
 extern int vga_interface_type;
diff --git a/vl.c b/vl.c
index b0399de..f57b4c8 100644
--- a/vl.c
+++ b/vl.c
@@ -2082,6 +2082,16 @@ static bool qxl_vga_available(void)
     return object_class_by_name("qxl-vga");
 }
 
+static bool tcx_vga_available(void)
+{
+    return object_class_by_name("SUNW,tcx");
+}
+
+static bool cg3_vga_available(void)
+{
+    return object_class_by_name("SUNW,cgthree");
+}
+
 static void select_vgahw (const char *p)
 {
     const char *opts;
@@ -2117,6 +2127,20 @@ static void select_vgahw (const char *p)
             fprintf(stderr, "Error: QXL VGA not available\n");
             exit(0);
         }
+    } else if (strstart(p, "tcx", &opts)) {
+        if (tcx_vga_available()) {
+            vga_interface_type = VGA_TCX;
+        } else {
+            fprintf(stderr, "Error: TCX framebuffer not available\n");
+            exit(0);
+        }
+    } else if (strstart(p, "cg3", &opts)) {
+        if (cg3_vga_available()) {
+            vga_interface_type = VGA_CG3;
+        } else {
+            fprintf(stderr, "Error: CG3 framebuffer not available\n");
+            exit(0);
+        }
     } else if (!strstart(p, "none", &opts)) {
     invalid_vga:
         fprintf(stderr, "Unknown vga type: %s\n", p);
-- 
1.7.10.4