2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2010, Peter Dinda <pdinda@northwestern.edu>
11 * Copyright (c) 2010, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Peter Dinda <pdinda@northwestern.edu>
16 * This is free software. You are permitted to use,
17 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
20 #include <palacios/vmm.h>
21 #include <palacios/vmm_stream.h>
22 #include <palacios/vmm_dev_mgr.h>
23 #include <palacios/vmm_sprintf.h>
24 #include <palacios/vmm_host_events.h>
25 #include <palacios/vmm_lock.h>
26 #include <palacios/vmm_string.h>
31 struct vm_device *frontend_dev;
35 static int stream_read(char *buf, uint_t length, void *private_data)
37 struct vm_device *dev = (struct vm_device *) private_data;
38 struct stream_state *state = (struct stream_state *) dev->private_data;
40 return V3_StreamRead(state->stream,buf,length);
43 static int stream_write(char *buf, uint_t length, void *private_data)
45 struct vm_device *dev = (struct vm_device *) private_data;
46 struct stream_state *state = (struct stream_state *) dev->private_data;
48 return V3_StreamWrite(state->stream,buf,length);
53 static struct v3_stream_ops stream_ops = {
54 .write = stream_write,
58 static struct v3_device_ops dev_ops = {
65 static int stream_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg)
67 v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
68 const char * frontend_tag = v3_cfg_val(frontend_cfg, "tag");
69 struct vm_device * frontend = v3_find_dev(vm, frontend_tag);
70 char * dev_id = v3_cfg_val(cfg, "ID");
71 char * path = v3_cfg_val(cfg, "localname");
73 /* read configuration */
74 V3_ASSERT(frontend_cfg);
75 V3_ASSERT(frontend_tag);
80 state = (struct cons_state *)V3_Malloc(sizeof(struct stream_state));
82 state->frontend_dev = frontend;
85 /* The system is responsible for interpreting the localname of the stream */
86 state->stream = V3_StreamOpen(ttypath, STREAM_OPEN_MODE_READ | STREAM_OPEN_MODE_WRITE);
88 PrintError("Could not open localname %s\n", path);
94 struct vm_device *dev = v3_allocate_device(dev_id, &dev_ops, state);
97 /* attach device to virtual machine */
98 if (v3_attach_device(vm, dev) == -1) {
99 PrintError("Could not attach device %s\n", dev_id);
104 /* attach to front-end display adapter */
105 v3_console_register_cga(frontend, &cons_ops, dev);
110 device_register("CURSES_CONSOLE", cons_init)