* Initial Device Support

*
*Modified Files:
*    .Sanitize ChangeLog
*Added Files:
*    Makefile.in README.Cygnus config.in configure configure.in
*    device.c device.h dma.c dma.h engine-sky.c gencode.c gpuif.c
*    gpuif.h hardware.c hardware.h interp.c m16.igen mdmx.igen
*    mips.dc mips.igen pke0.c pke0.h pke1.c pke1.h r5900.igen
*    sim-main.h tconfig.in vr5400.igen vu0.c vu0.h vu1.c vu1.h

1 files changed, 70 insertions, 0 deletions

diff --git a/sim/txvu/dma.c b/sim/txvu/dma.c
new file mode 100644
index 0000000..7f178aa
--- /dev/null
+++ b/sim/txvu/dma.c
@@ -0,0 +1,70 @@
+/*  Copyright (C) 1998, Cygnus Solutions
+
+    */
+
+#include "sim-main.h"
+
+#include "device.h"
+#include "dma.h"
+
+int
+dma_io_read_buffer(device *me,
+                   void *dest,
+                   int space,
+                   address_word addr,
+                   unsigned nr_bytes,
+                   sim_cpu *processor,
+                   sim_cia cia)
+{
+	printf("%s: Read!\n", me->name);
+	return nr_bytes;
+}
+
+static sim_event_handler do_the_dma_thing_handler;
+
+int
+dma_io_write_buffer(device *me,
+                    const void *source,
+                    int space,
+                    address_word addr,
+                    unsigned nr_bytes,
+                    sim_cpu *processor,
+                    sim_cia cia)
+{
+	printf("%s: Write!\n", me->name);
+
+	/* Do an event before the next instruction! */
+	sim_events_schedule (CPU_STATE(processor), 
+			     0 /*time*/, 
+			     do_the_dma_thing_handler,
+			     CPU_STATE(processor) /*data*/);
+	return nr_bytes;
+}
+
+device dma_device = 
+  { 
+    "Dma Controller", 
+    &dma_io_read_buffer,
+    &dma_io_write_buffer 
+  };
+
+void 
+dma_attach(SIM_DESC sd) 
+{
+  sim_core_attach (sd,
+		   NULL,
+                   0 /*level*/,
+                   access_read_write,
+                   0 /*space ???*/,
+                   DMA_REGISTER_WINDOW_START,
+                   DMA_REGISTER_WINDOW_SIZE /*nr_bytes*/,
+                   0 /*modulo*/,
+                   &dma_device,
+                   NULL /*buffer*/);
+}
+
+static void
+do_the_dma_thing_handler(SIM_DESC sd, void *data)
+{
+  printf("Dma Event!!!\n");
+}