updated the block device interfaces to be more generic, and have the virtio block...

[palacios.git] / palacios / include / devices / block_dev.h

diff --git a/palacios/include/devices/block_dev.h b/palacios/include/devices/block_dev.h
new file mode 100644 (file)
index 0000000..574c5af
--- /dev/null
+++ b/palacios/include/devices/block_dev.h
@@ -0,0 +1,66 @@
+
+/* 
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National 
+ * Science Foundation and the Department of Energy.  
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico.  You can find out more at 
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> 
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org> 
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software.  You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
+#ifndef __DEVICES_BLOCK_DEV_H__
+#define __DEVICES_BLOCK_DEV_H__
+
+#ifdef __V3VEE__
+
+
+
+#define ATAPI_BLOCK_SIZE 2048
+#define HD_SECTOR_SIZE 512
+
+
+struct v3_hd_ops {
+    uint64_t (*get_capacity)(void * private_data);
+    // Reads always operate on 2048 byte blocks
+    int (*read)(uint8_t * buf, int sector_count, uint64_t lba, void * private_data);
+    int (*write)(uint8_t * buf, int sector_count, uint64_t lba, void * private_data);
+};
+
+
+
+struct v3_cd_ops {
+    uint32_t (*get_capacity)(void * private_data);
+    // Reads always operate on 2048 byte blocks
+    int (*read)(uint8_t * buf, int block_count, uint64_t lba, void * private_data);
+};
+
+
+typedef enum {BLOCK_NONE, BLOCK_DISK, BLOCK_CDROM} v3_block_type_t;
+
+
+
+static const char * block_dev_type_strs[] = {"NONE", "HARDDISK", "CDROM" };
+
+static inline const char * v3_block_type_to_str(v3_block_type_t type) {
+    if (type > BLOCK_CDROM) {
+       return NULL;
+    }
+    return block_dev_type_strs[type];
+}
+
+
+
+#endif
+
+
+#endif