X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/b0ad00b8c9f81874df93d2b41e911c260e91a100..64552b6be4758d3a774f7787b294543ccebd5358:/hw/display/milkymist-tmu2.c

diff --git a/hw/display/milkymist-tmu2.c b/hw/display/milkymist-tmu2.c
index 356483fb21..3f92378410 100644
--- a/hw/display/milkymist-tmu2.c
+++ b/hw/display/milkymist-tmu2.c
@@ -26,9 +26,14 @@
 
 #include "qemu/osdep.h"
 #include "hw/hw.h"
+#include "hw/irq.h"
 #include "hw/sysbus.h"
 #include "trace.h"
+#include "qapi/error.h"
 #include "qemu/error-report.h"
+#include "qemu/module.h"
+#include "qapi/error.h"
+#include "hw/display/milkymist_tmu2.h"
 
 #include <X11/Xlib.h>
 #include <epoxy/gl.h>
@@ -84,7 +89,7 @@ struct MilkymistTMU2State {
     SysBusDevice parent_obj;
 
     MemoryRegion regs_region;
-    CharDriverState *chr;
+    Chardev *chr;
     qemu_irq irq;
 
     uint32_t regs[R_MAX];
@@ -212,7 +217,7 @@ static void tmu2_start(MilkymistTMU2State *s)
     /* Read the QEMU source framebuffer into an OpenGL texture */
     glGenTextures(1, &texture);
     glBindTexture(GL_TEXTURE_2D, texture);
-    fb_len = 2*s->regs[R_TEXHRES]*s->regs[R_TEXVRES];
+    fb_len = 2ULL * s->regs[R_TEXHRES] * s->regs[R_TEXVRES];
     fb = cpu_physical_memory_map(s->regs[R_TEXFBUF], &fb_len, 0);
     if (fb == NULL) {
         glDeleteTextures(1, &texture);
@@ -256,7 +261,7 @@ static void tmu2_start(MilkymistTMU2State *s)
     glColor4f(m, m, m, (float)(s->regs[R_ALPHA] + 1) / 64.0f);
 
     /* Read the QEMU dest. framebuffer into the OpenGL framebuffer */
-    fb_len = 2 * s->regs[R_DSTHRES] * s->regs[R_DSTVRES];
+    fb_len = 2ULL * s->regs[R_DSTHRES] * s->regs[R_DSTVRES];
     fb = cpu_physical_memory_map(s->regs[R_DSTFBUF], &fb_len, 0);
     if (fb == NULL) {
         glDeleteTextures(1, &texture);
@@ -292,7 +297,7 @@ static void tmu2_start(MilkymistTMU2State *s)
     cpu_physical_memory_unmap(mesh, mesh_len, 0, mesh_len);
 
     /* Write back the OpenGL framebuffer to the QEMU framebuffer */
-    fb_len = 2 * s->regs[R_DSTHRES] * s->regs[R_DSTVRES];
+    fb_len = 2ULL * s->regs[R_DSTHRES] * s->regs[R_DSTVRES];
     fb = cpu_physical_memory_map(s->regs[R_DSTFBUF], &fb_len, 1);
     if (fb == NULL) {
         glDeleteTextures(1, &texture);
@@ -497,3 +502,51 @@ static void milkymist_tmu2_register_types(void)
 }
 
 type_init(milkymist_tmu2_register_types)
+
+DeviceState *milkymist_tmu2_create(hwaddr base, qemu_irq irq)
+{
+    DeviceState *dev;
+    Display *d;
+    GLXFBConfig *configs;
+    int nelements;
+    int ver_major, ver_minor;
+
+    /* check that GLX will work */
+    d = XOpenDisplay(NULL);
+    if (d == NULL) {
+        return NULL;
+    }
+
+    if (!glXQueryVersion(d, &ver_major, &ver_minor)) {
+        /*
+         * Yeah, sometimes getting the GLX version can fail.
+         * Isn't X beautiful?
+         */
+        XCloseDisplay(d);
+        return NULL;
+    }
+
+    if ((ver_major < 1) || ((ver_major == 1) && (ver_minor < 3))) {
+        printf("Your GLX version is %d.%d,"
+          "but TMU emulation needs at least 1.3. TMU disabled.\n",
+          ver_major, ver_minor);
+        XCloseDisplay(d);
+        return NULL;
+    }
+
+    configs = glXChooseFBConfig(d, 0, glx_fbconfig_attr, &nelements);
+    if (configs == NULL) {
+        XCloseDisplay(d);
+        return NULL;
+    }
+
+    XFree(configs);
+    XCloseDisplay(d);
+
+    dev = qdev_create(NULL, TYPE_MILKYMIST_TMU2);
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
+    sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq);
+
+    return dev;
+}