1 files changed, 108 insertions, 0 deletions
diff --git a/dev/simple_disk.cc b/dev/simple_disk.cc
new file mode 100644
index 000000000..25645db5f
--- /dev/null
+++ b/dev/simple_disk.cc
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2003 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* @file
+ * Simple disk interface for the system console
+ */
+
+#include <string>
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "disk_image.hh"
+#include "misc.hh"
+#include "physical_memory.hh"
+#include "simple_disk.hh"
+#include "trace.hh"
+
+using namespace std;
+
+SimpleDisk::SimpleDisk(const string &name, PhysicalMemory *pmem,
+                       DiskImage *img)
+    : SimObject(name), physmem(pmem), image(img)
+{}
+
+SimpleDisk::~SimpleDisk()
+{}
+
+
+void
+SimpleDisk::read(Addr addr, baddr_t block, int count) const
+{
+    uint8_t *data = physmem->dma_addr(addr, count);
+    if (!data)
+        panic("dma out of range! read addr=%#x count=%d\n", addr, count);
+
+    if (count & (SectorSize - 1))
+        panic("Not reading a multiple of a sector (count = %d)", count);
+
+    for (int i = 0, j = 0; i < count; i += SectorSize, j++)
+        image->read(data + i, block + j);
+
+    DPRINTF(SimpleDisk, "read  block=%#x len=%d\n", (uint64_t)block, count);
+    DDUMP(SimpleDiskData, data, count);
+}
+
+void
+SimpleDisk::write(Addr addr, baddr_t block, int count)
+{
+    panic("unimplemented!\n");
+
+#if 0
+    uint8_t *data = physmem->dma_addr(addr, count);
+    if (!data)
+        panic("dma out of range! write addr=%#x count=%d\n", addr, count);
+
+    image->write(data, block, count);
+#endif
+}
+
+BEGIN_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk)
+
+    SimObjectParam<PhysicalMemory *> physmem;
+    SimObjectParam<DiskImage *> disk;
+
+END_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk)
+
+BEGIN_INIT_SIM_OBJECT_PARAMS(SimpleDisk)
+
+    INIT_PARAM(physmem, "Physical Memory"),
+    INIT_PARAM(disk, "Disk Image")
+
+END_INIT_SIM_OBJECT_PARAMS(SimpleDisk)
+
+CREATE_SIM_OBJECT(SimpleDisk)
+{
+    return new SimpleDisk(getInstanceName(), physmem, disk);
+}
+
+REGISTER_SIM_OBJECT("SimpleDisk", SimpleDisk)