3 * This file is part of the Palacios Virtual Machine Monitor developed
4 * by the V3VEE Project with funding from the United States National
5 * Science Foundation and the Department of Energy.
7 * The V3VEE Project is a joint project between Northwestern University
8 * and the University of New Mexico. You can find out more at
11 * Copyright (c) 2008, Peter Dinda <pdinda@northwestern.edu>
12 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
13 * All rights reserved.
15 * Author: Peter Dinda <pdinda@northwestern.edu>
16 * Contributor: 2008, Jack Lange <jarusl@cs.northwestern.edu>
19 * This is free software. You are permitted to use,
20 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
24 #include <devices/generic.h>
25 #include <palacios/vmm.h>
26 #include <palacios/vmm_types.h>
27 #include <geekos/io.h>
33 #define PrintDebug(fmt, args...)
38 #define MEM_HOOKS 0 // not yet implmented in device model
39 #define IRQ_HOOKS 0 // not yet implemented in device model
41 struct generic_internal {
42 generic_port_range_type *port_ranges;
43 uint_t num_port_ranges;
44 generic_address_range_type *address_ranges;
45 uint_t num_address_ranges;
46 generic_irq_range_type *irq_ranges;
47 uint_t num_irq_ranges;
53 #include <devices/ramdisk.h>
55 static struct ramdisk_t *ramdisk_state;
61 int generic_reset_device(struct vm_device * dev)
63 PrintDebug("generic: reset device\n");
73 int generic_start_device(struct vm_device *dev)
75 PrintDebug("generic: start device\n");
80 int generic_stop_device(struct vm_device *dev)
82 PrintDebug("generic: stop device\n");
89 int generic_write_port_passthrough(ushort_t port,
92 struct vm_device * dev)
96 PrintDebug("generic: writing 0x");
98 for (i = 0; i < length; i++) {
99 PrintDebug("%x", ((uchar_t*)src)[i]);
102 PrintDebug(" to port 0x%x ... ", port);
108 if (((port >= 0x170 && port <= 0x177) || port == 0x376 || port == 0x377)
109 && (dev->vm->cpu_mode == REAL)) {
112 err = ramdisk_state->eops.write_port(port, src, length, dev);
119 Out_Byte(port,((uchar_t*)src)[0]);
122 Out_Word(port,((ushort_t*)src)[0]);
125 Out_DWord(port,((uint_t*)src)[0]);
128 for (i = 0; i < length; i++) {
129 Out_Byte(port, ((uchar_t*)src)[i]);
135 PrintDebug(" done\n");
140 int generic_read_port_passthrough(ushort_t port,
143 struct vm_device * dev)
147 PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port);
153 if (((port >= 0x170 && port <= 0x177) || port == 0x376 || port == 0x377)
154 && (dev->vm->cpu_mode == REAL)) {
156 err = ramdisk_state->eops.read_port(port, src, length, dev);
163 ((uchar_t*)src)[0] = In_Byte(port);
166 ((ushort_t*)src)[0] = In_Word(port);
169 ((uint_t*)src)[0] = In_DWord(port);
172 for (i = 0; i < length; i++) {
173 ((uchar_t*)src)[i] = In_Byte(port);
180 PrintDebug(" done ... read 0x");
182 for (i = 0; i < length; i++) {
183 PrintDebug("%x", ((uchar_t*)src)[i]);
191 int generic_write_port_ignore(ushort_t port,
194 struct vm_device * dev)
198 PrintDebug("generic: writing 0x");
200 for (i = 0; i < length; i++) {
201 PrintDebug("%x", ((uchar_t*)src)[i]);
204 PrintDebug(" to port 0x%x ... ", port);
206 PrintDebug(" ignored\n");
212 if (((port >= 0x3e8 && port <= 0x3ef) ||
213 (port >= 0x2e8 && port <= 0x2ef))
214 && (dev->vm->cpu_mode == REAL)) {
216 err = ramdisk_state->eops.write_port_ignore(port, src, length, dev);
223 int generic_read_port_ignore(ushort_t port,
226 struct vm_device * dev)
229 PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port);
231 memset((char*)src,0,length);
232 PrintDebug(" ignored (return zeroed buffer)\n");
238 if (((port >= 0x3e8 && port <= 0x3ef) ||
239 (port >= 0x2e8 && port <= 0x2ef))
240 && (dev->vm->cpu_mode == REAL)) {
242 err = ramdisk_state->eops.read_port_ignore(port, src, length, dev);
251 int generic_interrupt(uint_t irq,
252 struct vm_device * dev)
254 PrintDebug("generic: interrupt 0x%x - injecting into VM\n", irq);
256 dev->vm->vm_ops.raise_irq(dev->vm, irq);
263 int generic_init_device(struct vm_device * dev)
265 struct generic_internal *state = (struct generic_internal *)(dev->private_data);
268 PrintDebug("generic: init_device\n");
270 // Would read state here
272 generic_reset_device(dev);
274 for (i = 0; i < state->num_port_ranges; i++) {
275 PrintDebug("generic: hooking ports 0x%x to 0x%x as %x\n", state->port_ranges[i][0], state->port_ranges[i][1], state->port_ranges[i][2]==GENERIC_PRINT_AND_PASSTHROUGH ? "print-and-passthrough" : "print-and-ignore");
278 for (j = state->port_ranges[i][0]; j <= state->port_ranges[i][1]; j++) {
279 if (state->port_ranges[i][2]==GENERIC_PRINT_AND_PASSTHROUGH) {
280 if (dev_hook_io(dev, j, &generic_read_port_passthrough, &generic_write_port_passthrough)) {
281 PrintDebug("generic: can't hook port 0x%x (already hooked?)\n", j);
283 } else if (state->port_ranges[i][2]==GENERIC_PRINT_AND_IGNORE) {
284 if (dev_hook_io(dev, j, &generic_read_port_ignore, &generic_write_port_ignore)) {
285 PrintDebug("generic: can't hook port 0x%x (already hooked?)\n", j);
290 PrintDebug("generic: hooking ports not supported\n");
295 for (i = 0; i < state->num_address_ranges; i++) {
296 PrintDebug("generic: hooking addresses 0x%x to 0x%x\n",state->address_ranges[i][0],state->address_ranges[i][1]);
299 if (dev_hook_mem(dev, state->address_ranges[i][0], state->address_ranges[i][1])) {
300 PrintDebug("generic: Can't hook addresses 0x%x to 0x%x (already hooked?)\n",
301 state->address_ranges[i][0], state->address_ranges[i][1]);
304 PrintDebug("generic: hooking addresses not supported\n");
309 for (i = 0; i < state->num_irq_ranges; i++) {
310 PrintDebug("generic: hooking irqs 0x%x to 0x%x\n",state->irq_ranges[i][0],state->irq_ranges[i][1]);
313 for (j = state->irq_ranges[i][0]; j <= state->irq_ranges[i][1]; j++) {
314 if (dev_hook_irq(dev, j, &generic_interrupt)) {
315 PrintDebug("generic: can't hook irq 0x%x (already hooked?)\n", j);
319 PrintDebug("generic: hooking irqs not supported\n");
326 ramdisk_state->cops.init(ramdisk_state, dev);
333 int generic_deinit_device(struct vm_device *dev)
335 struct generic_internal *state = (struct generic_internal *)(dev->private_data);
338 PrintDebug("generic: deinit_device\n");
342 ramdisk_state->cops.close(ramdisk_state);
346 for (i = 0; i < state->num_irq_ranges; i++) {
347 PrintDebug("generic: unhooking irqs 0x%x to 0x%x\n", state->irq_ranges[i][0], state->irq_ranges[i][1]);
350 for (j = state->irq_ranges[i][0]; j <= state->irq_ranges[i][1]; j++) {
351 if (dev_unhook_irq(dev, j)) {
352 PrintDebug("generic: can't unhook irq 0x%x (already unhooked?)\n",j);
356 PrintDebug("generic: unhooking irqs not supported\n");
361 for (i = 0; i < state->num_address_ranges; i++) {
362 PrintDebug("generic: unhooking addresses 0x%x to 0x%x\n",state->address_ranges[i][0],state->address_ranges[i][1]);
365 if (dev_unhook_mem(dev, state->address_ranges[i][0], state->address_ranges[i][1])) {
366 PrintDebug("generic: Can't unhook addresses 0x%x to 0x%x (already unhooked?)\n",
367 state->address_ranges[i][0], state->address_ranges[i][1]);
370 PrintDebug("generic: unhooking addresses not supported\n");
375 for (i = 0; i < state->num_port_ranges; i++) {
376 PrintDebug("generic: unhooking ports 0x%x to 0x%x\n",state->port_ranges[i][0],state->port_ranges[i][1]);
379 for (j = state->port_ranges[i][0]; j <= state->port_ranges[i][1]; j++) {
380 if (dev_unhook_io(dev, j)) {
381 PrintDebug("generic: can't unhook port 0x%x (already unhooked?)\n", j);
385 PrintDebug("generic: unhooking ports not supported\n");
390 generic_reset_device(dev);
398 static struct vm_device_ops dev_ops = {
399 .init = generic_init_device,
400 .deinit = generic_deinit_device,
401 .reset = generic_reset_device,
402 .start = generic_start_device,
403 .stop = generic_stop_device,
409 struct vm_device *create_generic(generic_port_range_type port_ranges[],
410 generic_address_range_type address_ranges[],
411 generic_irq_range_type irq_ranges[])
413 struct generic_internal * generic_state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal));
415 uint_t num_port_ranges, num_address_ranges, num_irq_ranges;
418 if (port_ranges!=NULL) {
420 while (port_ranges[i]!=NULL &&
421 !(port_ranges[i][0]==0 && port_ranges[i][1]==0 && port_ranges[i][2]==0))
422 { num_port_ranges++; i++; }
426 num_address_ranges=0;
427 if (address_ranges!=NULL) {
429 while (address_ranges[i]!=NULL &&
430 !(address_ranges[i][0]==0 && address_ranges[i][1]==0 && address_ranges[i][2]==0))
431 { num_address_ranges++; i++; }
435 if (irq_ranges!=NULL) {
437 while (irq_ranges[i]!=NULL &&
438 !(irq_ranges[i][0]==0 && irq_ranges[i][1]==0 && irq_ranges[i][2]==0) )
439 { num_irq_ranges++; i++; }
443 generic_state->num_port_ranges = num_port_ranges;
445 if (num_port_ranges > 0) {
446 generic_state->port_ranges = V3_Malloc(sizeof(generic_address_range_type) * num_port_ranges);
447 memcpy(generic_state->port_ranges, port_ranges, sizeof(generic_port_range_type) * num_port_ranges);
449 generic_state->port_ranges = NULL;
453 generic_state->num_address_ranges = num_address_ranges;
455 if (num_address_ranges > 0) {
456 generic_state->address_ranges = V3_Malloc(sizeof(generic_address_range_type) * num_address_ranges);
457 memcpy(generic_state->address_ranges, address_ranges, sizeof(generic_address_range_type) * num_address_ranges);
459 generic_state->address_ranges = NULL;
463 generic_state->num_irq_ranges = num_irq_ranges;
465 if (num_irq_ranges > 0) {
466 generic_state->irq_ranges = V3_Malloc(sizeof(generic_address_range_type) * num_irq_ranges);
467 memcpy(generic_state->irq_ranges, irq_ranges, sizeof(generic_irq_range_type) * num_port_ranges);
469 generic_state->irq_ranges = NULL;
474 ramdisk_state = create_ramdisk();
475 V3_ASSERT(ramdisk_state != NULL);
479 struct vm_device *device = create_device("GENERIC", &dev_ops, generic_state);