1 /* (c) 2008, Peter Dinda <pdinda@northwestern.edu> */
2 /* (c) 2008, The V3VEE Project <http://www.v3vee.org> */
5 #include <devices/generic.h>
6 #include <palacios/vmm.h>
7 #include <palacios/vmm_types.h>
14 #define PrintDebug(fmt, args...)
19 #define MEM_HOOKS 0 // not yet implmented in device model
20 #define IRQ_HOOKS 0 // not yet implemented in device model
22 struct generic_internal {
23 generic_port_range_type * port_ranges;
24 uint_t num_port_ranges;
25 generic_address_range_type * address_ranges;
26 uint_t num_address_ranges;
27 generic_irq_range_type * irq_ranges;
28 uint_t num_irq_ranges;
33 int generic_reset_device(struct vm_device * dev)
35 PrintDebug("generic: reset device\n");
45 int generic_start_device(struct vm_device * dev)
47 PrintDebug("generic: start device\n");
52 int generic_stop_device(struct vm_device * dev)
54 PrintDebug("generic: stop device\n");
61 int generic_write_port_passthrough(ushort_t port,
64 struct vm_device * dev)
68 PrintDebug("generic: writing 0x");
70 for (i = 0; i < length; i++) {
71 PrintDebug("%x", ((uchar_t*)src)[i]);
74 PrintDebug(" to port 0x%x ... ", port);
79 Out_Byte(port, ((uchar_t*)src)[0]);
82 Out_Word(port, ((ushort_t*)src)[0]);
85 Out_DWord(port, ((uint_t*)src)[0]);
88 for (i = 0; i < length; i++) {
89 Out_Byte(port, ((uchar_t*)src)[i]);
94 PrintDebug(" done\n");
99 int generic_read_port_passthrough(ushort_t port,
102 struct vm_device * dev)
106 PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port);
111 ((uchar_t*)src)[0] = In_Byte(port);
114 ((ushort_t*)src)[0] = In_Word(port);
117 ((uint_t*)src)[0] = In_DWord(port);
120 for (i = 0; i < length; i++) {
121 ((uchar_t*)src)[i] = In_Byte(port);
125 PrintDebug(" done ... read 0x");
127 for (i = 0; i < length; i++) {
128 PrintDebug("%x", ((uchar_t*)src)[i]);
136 int generic_write_port_ignore(ushort_t port,
139 struct vm_device * dev)
143 PrintDebug("generic: writing 0x");
145 for (i = 0; i < length; i++) {
146 PrintDebug("%x", ((uchar_t*)src)[i]);
149 PrintDebug(" to port 0x%x ... ", port);
151 PrintDebug(" ignored\n");
156 int generic_read_port_ignore(ushort_t port,
159 struct vm_device * dev)
162 PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port);
164 memset((char*)src, 0, length);
165 PrintDebug(" ignored (return zeroed buffer)\n");
172 int generic_interrupt(uint_t irq, struct vm_device * dev) {
173 PrintDebug("generic: interrupt 0x%x - injecting into VM\n", irq);
175 dev->vm->vm_ops.raise_irq(dev->vm, irq);
181 int generic_init_device(struct vm_device * dev) {
182 struct generic_internal * state = (struct generic_internal *)(dev->private_data);
185 PrintDebug("generic: init_device\n");
187 // Would read state here
189 generic_reset_device(dev);
191 for (i = 0; i < state->num_port_ranges; i++) {
193 PrintDebug("generic: hooking ports 0x%x to 0x%x as %x\n",
194 state->port_ranges[i][0], state->port_ranges[i][1],
195 (state->port_ranges[i][2] == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : "print-and-ignore");
197 if (PORT_HOOKS) { // This is a runtime conditional on a #define
198 for (j = state->port_ranges[i][0]; j <= state->port_ranges[i][1]; j++) {
199 if (state->port_ranges[i][2] == GENERIC_PRINT_AND_PASSTHROUGH) {
201 if (dev_hook_io(dev, j, &generic_read_port_passthrough, &generic_write_port_passthrough)) {
202 PrintDebug("generic: can't hook port 0x%x (already hooked?)\n", j);
205 } else if (state->port_ranges[i][2] == GENERIC_PRINT_AND_IGNORE) {
207 if (dev_hook_io(dev, j, &generic_read_port_ignore, &generic_write_port_ignore)) {
208 PrintDebug("generic: can't hook port 0x%x (already hooked?)\n", j);
214 PrintDebug("generic: hooking ports not supported\n");
219 for (i = 0; i < state->num_address_ranges; i++) {
221 PrintDebug("generic: hooking addresses 0x%x to 0x%x\n",
222 state->address_ranges[i][0], state->address_ranges[i][1]);
224 if (MEM_HOOKS) { // This is a runtime conditional on a #define
225 if (dev_hook_mem(dev, state->address_ranges[i][0], state->address_ranges[i][1])) {
226 PrintDebug("generic: Can't hook addresses 0x%x to 0x%x (already hooked?)\n",
227 state->address_ranges[i][0], state->address_ranges[i][1]);
230 PrintDebug("generic: hooking addresses not supported\n");
234 for (i = 0; i < state->num_irq_ranges; i++) {
236 PrintDebug("generic: hooking irqs 0x%x to 0x%x\n",
237 state->irq_ranges[i][0], state->irq_ranges[i][1]);
239 if (IRQ_HOOKS) { // This is a runtime conditional on a #define
240 for (j = state->irq_ranges[i][0]; j <= state->irq_ranges[i][1]; j++) {
241 if (dev_hook_irq(dev, j, &generic_interrupt)) {
242 PrintDebug("generic: can't hook irq 0x%x (already hooked?)\n", j);
246 PrintDebug("generic: hooking irqs not supported\n");
254 int generic_deinit_device(struct vm_device * dev) {
255 struct generic_internal *state = (struct generic_internal *)(dev->private_data);
258 PrintDebug("generic: deinit_device\n");
261 for (i = 0; i < state->num_irq_ranges; i++) {
263 PrintDebug("generic: unhooking irqs 0x%x to 0x%x\n",
264 state->irq_ranges[i][0], state->irq_ranges[i][1]);
266 if (IRQ_HOOKS) { // This is a runtime conditional on a #define
267 for (j = state->irq_ranges[i][0]; j <= state->irq_ranges[i][1]; j++) {
269 if (dev_unhook_irq(dev, j)) {
270 PrintDebug("generic: can't unhook irq 0x%x (already unhooked?)\n",j);
275 PrintDebug("generic: unhooking irqs not supported\n");
279 for (i = 0; i < state->num_address_ranges; i++) {
281 PrintDebug("generic: unhooking addresses 0x%x to 0x%x\n",
282 state->address_ranges[i][0], state->address_ranges[i][1]);
285 if (dev_unhook_mem(dev, state->address_ranges[i][0], state->address_ranges[i][1])) {
287 PrintDebug("generic: Can't unhook addresses 0x%x to 0x%x (already unhooked?)\n",
288 state->address_ranges[i][0], state->address_ranges[i][1]);
292 PrintDebug("generic: unhooking addresses not supported\n");
296 for (i = 0; i < state->num_port_ranges; i++) {
297 PrintDebug("generic: unhooking ports 0x%x to 0x%x\n",
298 state->port_ranges[i][0], state->port_ranges[i][1]);
301 for (j = state->port_ranges[i][0]; j <= state->port_ranges[i][1]; j++) {
302 if (dev_unhook_io(dev, j)) {
303 PrintDebug("generic: can't unhook port 0x%x (already unhooked?)\n", j);
307 PrintDebug("generic: unhooking ports not supported\n");
312 generic_reset_device(dev);
320 static struct vm_device_ops dev_ops = {
321 .init = generic_init_device,
322 .deinit = generic_deinit_device,
323 .reset = generic_reset_device,
324 .start = generic_start_device,
325 .stop = generic_stop_device,
331 struct vm_device *create_generic(generic_port_range_type port_ranges[],
332 generic_address_range_type address_ranges[],
333 generic_irq_range_type irq_ranges[])
335 struct generic_internal * generic_state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal));
337 uint_t num_port_ranges;
338 uint_t num_address_ranges;
339 uint_t num_irq_ranges;
344 if (port_ranges != NULL) {
347 while ((port_ranges[i] != NULL) &&
348 ( !( (port_ranges[i][0] == 0) &&
349 (port_ranges[i][1] == 0) &&
350 (port_ranges[i][2] == 0)) ) )
358 num_address_ranges = 0;
360 if (address_ranges != NULL) {
363 while ((address_ranges[i] != NULL) &&
364 ( !( (address_ranges[i][0] == 0) &&
365 (address_ranges[i][1] == 0) &&
366 (address_ranges[i][2] == 0)) ) )
368 num_address_ranges++;
375 if (irq_ranges != NULL) {
378 while ((irq_ranges[i] != NULL) &&
379 ( !( (irq_ranges[i][0] == 0) &&
380 (irq_ranges[i][1] == 0) &&
381 (irq_ranges[i][2] == 0)) ) )
389 generic_state->num_port_ranges = num_port_ranges;
391 if (num_port_ranges > 0) {
393 generic_state->port_ranges = V3_Malloc(sizeof(generic_address_range_type) * num_port_ranges);
394 memcpy(generic_state->port_ranges, port_ranges,
395 (sizeof(generic_port_range_type) * num_port_ranges));
398 generic_state->port_ranges = NULL;
402 generic_state->num_address_ranges = num_address_ranges;
404 if (num_address_ranges > 0) {
406 generic_state->address_ranges = V3_Malloc(sizeof(generic_address_range_type) * num_address_ranges);
407 memcpy(generic_state->address_ranges, address_ranges,
408 (sizeof(generic_address_range_type) * num_address_ranges));
411 generic_state->address_ranges = NULL;
415 generic_state->num_irq_ranges = num_irq_ranges;
417 if (num_irq_ranges > 0) {
419 generic_state->irq_ranges = V3_Malloc(sizeof(generic_address_range_type) * num_irq_ranges);
420 memcpy(generic_state->irq_ranges, irq_ranges,
421 (sizeof(generic_irq_range_type) * num_port_ranges));
424 generic_state->irq_ranges = NULL;
427 struct vm_device *device = create_device("GENERIC", &dev_ops, generic_state);