-/* (c) 2008, Peter Dinda <pdinda@northwestern.edu> */
-/* (c) 2008, The V3VEE Project <http://www.v3vee.org> */
+/*
+ * 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, Peter Dinda <pdinda@northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Peter Dinda <pdinda@northwestern.edu>
+ * Contributor: 2008, 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".
+ */
-
-
-
-#include <devices/generic.h>
#include <palacios/vmm.h>
#include <palacios/vmm_types.h>
#include <palacios/vmm_list.h>
+#include <palacios/vmm_io.h>
+#include <palacios/vmm_dev_mgr.h>
+#include <palacios/vm_guest_mem.h>
+#ifdef V3_CONFIG_HOST_DEVICE
+#include <interfaces/vmm_host_dev.h>
+#endif
-
-#ifndef DEBUG_GENERIC
+#ifndef V3_CONFIG_DEBUG_GENERIC
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
+#define MAX_NAME 32
+#define MAX_MEM_HOOKS 16
-#define PORT_HOOKS 1
-#define MEM_HOOKS 0 // not yet implmented in device model
-#define IRQ_HOOKS 0 // not yet implemented in device model
-
+typedef enum {GENERIC_IGNORE,
+ GENERIC_PASSTHROUGH,
+ GENERIC_PRINT_AND_PASSTHROUGH,
+ GENERIC_PRINT_AND_IGNORE} generic_mode_t;
struct generic_internal {
- struct list_head port_list;
- uint_t num_port_ranges;
- struct list_head mem_list;
- uint_t num_mem_ranges;
- struct list_head irq_list;
- uint_t num_irq_ranges;
-};
-
-
-struct port_range {
- uint_t start;
- uint_t end;
- uint_t type;
- struct list_head range_link;
-};
+ enum {GENERIC_PHYSICAL, GENERIC_HOST} forward_type;
+#ifdef V3_CONFIG_HOST_DEVICE
+ v3_host_dev_t host_dev;
+#endif
+ struct vm_device *dev; // me
-struct mem_range {
- void * start;
- void * end;
- uint_t type;
- struct list_head range_link;
+ char name[MAX_NAME];
+
+ uint32_t num_mem_hooks;
+ addr_t mem_hook[MAX_MEM_HOOKS];
};
-struct irq_range {
- uint_t start;
- uint_t end;
- uint_t type;
- struct list_head range_link;
-};
-int generic_reset_device(struct vm_device * dev)
+static int generic_write_port_passthrough(struct guest_info * core,
+ uint16_t port,
+ void * src,
+ uint_t length,
+ void * priv_data)
{
- PrintDebug("generic: reset device\n");
-
- return 0;
-
+ struct generic_internal *state = (struct generic_internal *) priv_data;
+ uint_t i;
+
+ switch (state->forward_type) {
+ case GENERIC_PHYSICAL:
+ switch (length) {
+ case 1:
+ v3_outb(port, ((uint8_t *)src)[0]);
+ break;
+ case 2:
+ v3_outw(port, ((uint16_t *)src)[0]);
+ break;
+ case 4:
+ v3_outdw(port, ((uint32_t *)src)[0]);
+ break;
+ default:
+ for (i = 0; i < length; i++) {
+ v3_outb(port, ((uint8_t *)src)[i]);
+ }
+ break;
+ }
+ return length;
+ break;
+#ifdef V3_CONFIG_HOST_DEVICE
+ case GENERIC_HOST:
+ if (state->host_dev) {
+ return v3_host_dev_write_io(state->host_dev,port,src,length);
+ } else {
+ return -1;
+ }
+ break;
+#endif
+ default:
+ PrintError(core->vm_info, core, "generic (%s): unknown forwarding type\n", state->name);
+ return -1;
+ break;
+ }
}
+static int generic_write_port_print_and_passthrough(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
+ uint_t i;
+ int rc;
+#ifdef V3_CONFIG_DEBUG_GENERIC
+ struct generic_internal *state = (struct generic_internal *) priv_data;
+#endif
+ PrintDebug(core->vm_info, core, "generic (%s): writing 0x%x bytes to port 0x%x using %s ...", state->name,
+ length, port,
+ state->forward_type == GENERIC_PHYSICAL ? "physical" :
+ state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN");
+ PrintDebug(core->vm_info, core, "generic (%s): writing 0x", state->name);
-int generic_start_device(struct vm_device * dev)
-{
- PrintDebug("generic: start device\n");
- return 0;
-}
+ for (i = 0; i < length; i++) {
+ PrintDebug(core->vm_info, core, "%x", ((uint8_t *)src)[i]);
+ }
+
+ PrintDebug(core->vm_info, core, " to port 0x%x ... ", port);
+ rc=generic_write_port_passthrough(core,port,src,length,priv_data);
+
+ PrintDebug(core->vm_info, core, " done\n");
+
+ return rc;
+}
-int generic_stop_device(struct vm_device * dev)
+static int generic_read_port_passthrough(struct guest_info * core,
+ uint16_t port,
+ void * dst,
+ uint_t length,
+ void * priv_data)
{
- PrintDebug("generic: stop device\n");
- return 0;
+ struct generic_internal *state = (struct generic_internal *) priv_data;
+
+ uint_t i;
+
+ switch (state->forward_type) {
+ case GENERIC_PHYSICAL:
+ switch (length) {
+ case 1:
+ ((uint8_t *)dst)[0] = v3_inb(port);
+ break;
+ case 2:
+ ((uint16_t *)dst)[0] = v3_inw(port);
+ break;
+ case 4:
+ ((uint32_t *)dst)[0] = v3_indw(port);
+ break;
+ default:
+ for (i = 0; i < length; i++) {
+ ((uint8_t *)dst)[i] = v3_inb(port);
+ }
+ }
+ return length;
+ break;
+#ifdef V3_CONFIG_HOST_DEVICE
+ case GENERIC_HOST:
+ if (state->host_dev) {
+ return v3_host_dev_read_io(state->host_dev,port,dst,length);
+ }
+ break;
+#endif
+ default:
+ PrintError(core->vm_info, core, "generic (%s): unknown forwarding type\n", state->name);
+ return -1;
+ break;
+ }
+
+ return -1;
}
+static int generic_read_port_print_and_passthrough(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
+ uint_t i;
+ int rc;
+#ifdef V3_CONFIG_DEBUG_GENERIC
+ struct generic_internal *state = (struct generic_internal *) priv_data;
+#endif
+ PrintDebug(core->vm_info, core, "generic (%s): reading 0x%x bytes from port 0x%x using %s ...", state->name, length, port,
+ state->forward_type == GENERIC_PHYSICAL ? "physical" :
+ state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN");
-int generic_write_port_passthrough(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev)
-{
- uint_t i;
- PrintDebug("generic: writing 0x");
+ rc=generic_read_port_passthrough(core,port,src,length,priv_data);
- for (i = 0; i < length; i++) {
- PrintDebug("%x", ((uchar_t*)src)[i]);
- }
-
- PrintDebug(" to port 0x%x ... ", port);
-
-
- switch (length) {
- case 1:
- v3_outb(port,((uchar_t*)src)[0]);
- break;
- case 2:
- v3_outw(port,((ushort_t*)src)[0]);
- break;
- case 4:
- v3_outdw(port,((uint_t*)src)[0]);
- break;
- default:
- for (i = 0; i < length; i++) {
- v3_outb(port, ((uchar_t*)src)[i]);
+ if (rc<0) {
+ PrintError(core->vm_info, core, "FAILED\n");
+ return rc;
+ } else {
+ PrintDebug(core->vm_info, core, " done ... read 0x");
+
+ for (i = 0; i < rc; i++) {
+ PrintDebug(core->vm_info, core, "%x", ((uint8_t *)src)[i]);
+ }
+
+ PrintDebug(core->vm_info, core, "\n");
}
- } //switch length
+
+ return rc;
+}
- PrintDebug(" done\n");
-
- return length;
-}
+static int generic_read_port_ignore(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
-int generic_read_port_passthrough(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev)
-{
- uint_t i;
+ memset((uint8_t *)src, 0, length);
- PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port);
+ return length;
+}
+static int generic_read_port_print_and_ignore(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
+
+#ifdef V3_CONFIG_DEBUG_GENERIC
+ struct generic_internal *state = (struct generic_internal *) priv_data;
+#endif
- switch (length) {
- case 1:
- ((uchar_t*)src)[0] = v3_inb(port);
- break;
- case 2:
- ((ushort_t*)src)[0] = v3_inw(port);
- break;
- case 4:
- ((uint_t*)src)[0] = v3_indw(port);
- break;
- default:
- for (i = 0; i < length; i++) {
- ((uchar_t*)src)[i] = v3_inb(port);
- }
- }//switch length
+ PrintDebug(core->vm_info, core, "generic (%s): reading 0x%x bytes from port 0x%x using %s ...", state->name, length, port,
+ state->forward_type == GENERIC_PHYSICAL ? "physical" :
+ state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN");
- PrintDebug(" done ... read 0x");
- for (i = 0; i < length; i++) {
- PrintDebug("%x", ((uchar_t*)src)[i]);
- }
+ memset((uint8_t *)src, 0, length);
+ PrintDebug(core->vm_info, core, " ignored (return zeroed buffer)\n");
+
+ return length;
+}
- PrintDebug("\n");
+static int generic_write_port_ignore(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
- return length;
+ return length;
}
-int generic_write_port_ignore(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev)
-{
- uint_t i;
+static int generic_write_port_print_and_ignore(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
+ int i;
- PrintDebug("generic: writing 0x");
+#ifdef V3_CONFIG_DEBUG_GENERIC
+ struct generic_internal *state = (struct generic_internal *) priv_data;
+#endif
- for (i = 0; i < length; i++) {
- PrintDebug("%x", ((uchar_t*)src)[i]);
- }
-
- PrintDebug(" to port 0x%x ... ignored\n", port);
-
- return length;
+ PrintDebug(core->vm_info, core, "generic (%s): writing 0x%x bytes to port 0x%x using %s ", state->name, length, port,
+ state->forward_type == GENERIC_PHYSICAL ? "physical" :
+ state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN");
+
+ memset((uint8_t *)src, 0, length);
+ PrintDebug(core->vm_info, core, " ignored - data was: 0x");
+
+ for (i = 0; i < length; i++) {
+ PrintDebug(core->vm_info, core, "%x", ((uint8_t *)src)[i]);
+ }
+
+ PrintDebug(core->vm_info, core, "\n");
+
+ return length;
}
-int generic_read_port_ignore(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev)
+
+
+static int generic_write_mem_passthrough(struct guest_info * core,
+ addr_t gpa,
+ void * src,
+ uint_t len,
+ void * priv)
{
+ struct vm_device *dev = (struct vm_device *) priv;
+ struct generic_internal *state = (struct generic_internal *) dev->private_data;
+
+ switch (state->forward_type) {
+ case GENERIC_PHYSICAL:
+ memcpy(V3_VAddr((void*)gpa),src,len);
+ return len;
+ break;
+#ifdef V3_CONFIG_HOST_DEVICE
+ case GENERIC_HOST:
+ if (state->host_dev) {
+ return v3_host_dev_write_mem(state->host_dev,gpa,src,len);
+ } else {
+ return -1;
+ }
+ break;
+#endif
+ default:
+ PrintError(core->vm_info, core, "generic (%s): unknown forwarding type\n", state->name);
+ return -1;
+ break;
+ }
+}
- PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port);
+static int generic_write_mem_print_and_passthrough(struct guest_info * core,
+ addr_t gpa,
+ void * src,
+ uint_t len,
+ void * priv)
+{
+#ifdef V3_CONFIG_DEBUG_GENERIC
+ struct vm_device *dev = (struct vm_device *) priv;
+ struct generic_internal *state = (struct generic_internal *) dev->private_data;
+#endif
- memset((char*)src, 0, length);
- PrintDebug(" ignored (return zeroed buffer)\n");
+ PrintDebug(core->vm_info, core, "generic (%s): writing %u bytes to GPA 0x%p via %s ... ", state->name,
+ len,(void*)gpa,
+ state->forward_type == GENERIC_PHYSICAL ? "physical" :
+ state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN");
+
+ int rc = generic_write_mem_passthrough(core,gpa,src,len,priv);
- return length;
+ PrintDebug(core->vm_info, core, "done\n");
+
+ return rc;
}
+static int generic_write_mem_ignore(struct guest_info * core,
+ addr_t gpa,
+ void * src,
+ uint_t len,
+ void * priv)
+{
+ return len;
+}
+static int generic_write_mem_print_and_ignore(struct guest_info * core,
+ addr_t gpa,
+ void * src,
+ uint_t len,
+ void * priv)
+{
+#ifdef V3_CONFIG_DEBUG_GENERIC
+ struct vm_device *dev = (struct vm_device *) priv;
+ struct generic_internal *state = (struct generic_internal *) dev->private_data;
+#endif
-int generic_interrupt(uint_t irq, struct vm_device * dev) {
- PrintDebug("generic: interrupt 0x%x - injecting into VM\n", irq);
-
- dev->vm->vm_ops.raise_irq(dev->vm, irq);
+ PrintDebug(core->vm_info, core, "generic (%s): ignoring write of %u bytes to GPA 0x%p via %s", state->name,
+ len,(void*)gpa,
+ state->forward_type == GENERIC_PHYSICAL ? "physical" :
+ state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN");
+
+ return len;
+}
- return 0;
+static int generic_read_mem_passthrough(struct guest_info * core,
+ addr_t gpa,
+ void * dst,
+ uint_t len,
+ void * priv)
+{
+ struct vm_device *dev = (struct vm_device *) priv;
+ struct generic_internal *state = (struct generic_internal *) dev->private_data;
+
+ switch (state->forward_type) {
+ case GENERIC_PHYSICAL:
+ memcpy(dst,V3_VAddr((void*)gpa),len);
+ return len;
+ break;
+#ifdef V3_CONFIG_HOST_DEVICE
+ case GENERIC_HOST:
+ if (state->host_dev) {
+ return v3_host_dev_read_mem(state->host_dev,gpa,dst,len);
+ } else {
+ return -1;
+ }
+ break;
+#endif
+ default:
+ PrintError(core->vm_info, core, "generic (%s): unknown forwarding type\n", state->name);
+ break;
+ }
+
+ return -1;
}
+static int generic_read_mem_print_and_passthrough(struct guest_info * core,
+ addr_t gpa,
+ void * dst,
+ uint_t len,
+ void * priv)
+{
+#ifdef V3_CONFIG_DEBUG_GENERIC
+ struct vm_device *dev = (struct vm_device *) priv;
+ struct generic_internal *state = (struct generic_internal *) dev->private_data;
+#endif
-int generic_init_device(struct vm_device * dev) {
- struct generic_internal * state = (struct generic_internal *)(dev->private_data);
-
- PrintDebug("generic: init_device\n");
- generic_reset_device(dev);
-
-
- if (PORT_HOOKS) { // This is a runtime conditional on a #define
- struct port_range * tmp = NULL;
-
- list_for_each_entry(tmp, &(state->port_list), range_link) {
- uint_t i = 0;
-
- PrintDebug("generic: hooking ports 0x%x to 0x%x as %x\n",
- tmp->start, tmp->end,
- (tmp->type == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : "print-and-ignore");
-
- for (i = tmp->start; i <= tmp->end; i++) {
- if (tmp->type == GENERIC_PRINT_AND_PASSTHROUGH) {
-
- if (dev_hook_io(dev, i, &generic_read_port_passthrough, &generic_write_port_passthrough)) {
- PrintDebug("generic: can't hook port 0x%x (already hooked?)\n", i);
- }
-
- } else if (tmp->type == GENERIC_PRINT_AND_IGNORE) {
-
- if (dev_hook_io(dev, i, &generic_read_port_ignore, &generic_write_port_ignore)) {
- PrintDebug("generic: can't hook port 0x%x (already hooked?)\n", i);
- }
- }
- }
+ PrintDebug(core->vm_info, core, "generic (%s): attempting to read %u bytes from GPA 0x%p via %s ... ", state->name,
+ len,(void*)gpa,
+ state->forward_type == GENERIC_PHYSICAL ? "physical" :
+ state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN");
+
+ int rc = generic_read_mem_passthrough(core,gpa,dst,len,priv);
- }
- } else {
- PrintDebug("generic: hooking ports not supported\n");
- }
+ PrintDebug(core->vm_info, core, "done - read %d bytes\n", rc);
+
+ return rc;
+}
+static int generic_read_mem_ignore(struct guest_info * core,
+ addr_t gpa,
+ void * dst,
+ uint_t len,
+ void * priv)
+{
+#ifdef V3_CONFIG_DEBUG_GENERIC
+ struct vm_device *dev = (struct vm_device *) priv;
+ struct generic_internal *state = (struct generic_internal *) dev->private_data;
+#endif
+ PrintDebug(core->vm_info, core, "generic (%s): ignoring attempt to read %u bytes from GPA 0x%p via %s ... ", state->name,
+ len,(void*)gpa,
+ state->forward_type == GENERIC_PHYSICAL ? "physical" :
+ state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN");
- if (MEM_HOOKS) { // This is a runtime conditional on a #define
- struct mem_range * tmp;
+ memset((uint8_t *)dst, 0, len);
- list_for_each_entry(tmp, &(state->mem_list), range_link) {
+ PrintDebug(core->vm_info, core, "returning zeros\n");
- PrintDebug("generic: hooking addresses 0x%x to 0x%x\n",
- tmp->start, tmp->end);
-
-
- if (dev_hook_mem(dev, tmp->start, tmp->end)) {
- PrintDebug("generic: Can't hook addresses 0x%x to 0x%x (already hooked?)\n",
- tmp->start, tmp->end);
- }
- }
- } else {
- PrintDebug("generic: hooking addresses not supported\n");
- }
+ return len;
+}
+static int generic_read_mem_print_and_ignore(struct guest_info * core,
+ addr_t gpa,
+ void * dst,
+ uint_t len,
+ void * priv)
+{
+ memset((uint8_t *)dst, 0, len);
+ return len;
+}
- if (IRQ_HOOKS) { // This is a runtime conditional on a #define
- struct irq_range * tmp;
+static int generic_free(struct generic_internal * state) {
+ int i;
+
+ PrintDebug(VM_NONE,VCORE_NONE, "generic (%s): deinit_device\n", state->name);
+
+#ifdef V3_CONFIG_HOST_DEVICE
+ if (state->host_dev) {
+ v3_host_dev_close(state->host_dev);
+ state->host_dev=0;
+ }
+#endif
- list_for_each_entry(tmp, &(state->irq_list), range_link) {
- uint_t i;
-
- PrintDebug("generic: hooking irqs 0x%x to 0x%x\n",
- tmp->start, tmp->end);
-
- for (i = tmp->start; i <= tmp->end; i++) {
- if (dev_hook_irq(dev, i, &generic_interrupt)) {
- PrintDebug("generic: can't hook irq 0x%x (already hooked?)\n", i);
+ // Note that the device manager handles unhooking the I/O ports
+ // We need to handle unhooking memory regions
+ for (i=0;i<state->num_mem_hooks;i++) {
+ if (v3_unhook_mem(state->dev->vm,V3_MEM_CORE_ANY,state->mem_hook[i])<0) {
+ PrintError(VM_NONE,VCORE_NONE , "generic (%s): unable to unhook memory starting at 0x%p\n", state->name,(void*)(state->mem_hook[i]));
+ return -1;
}
- }
-
}
- } else {
- PrintDebug("generic: hooking irqs not supported\n");
- }
+
+ V3_Free(state);
+ return 0;
+}
+
- return 0;
-}
-int generic_deinit_device(struct vm_device * dev) {
- struct generic_internal * state = (struct generic_internal *)(dev->private_data);
+static struct v3_device_ops dev_ops = {
+ .free = (int (*)(void *))generic_free,
+};
- PrintDebug("generic: deinit_device\n");
- if (IRQ_HOOKS) { // This is a runtime conditional on a #define
- struct irq_range * tmp;
- struct irq_range * cur;
-
- list_for_each_entry_safe(cur, tmp, &(state->irq_list), range_link) {
- uint_t i;
+static int add_port_range(struct vm_device * dev, uint_t start, uint_t end, generic_mode_t mode) {
+ uint_t i = 0;
- PrintDebug("generic: unhooking irqs 0x%x to 0x%x\n",
- cur->start, cur->end);
-
+ struct generic_internal *state = (struct generic_internal *) dev->private_data;
- for (i = cur->start; i <= cur->end; i++) {
- if (dev_unhook_irq(dev, i)) {
- PrintDebug("generic: can't unhook irq 0x%x (already unhooked?)\n", i);
+ PrintDebug(VM_NONE, VCORE_NONE, "generic (%s): adding port range 0x%x to 0x%x as %s\n", state->name,
+ start, end,
+ (mode == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" :
+ (mode == GENERIC_PRINT_AND_IGNORE) ? "print-and-ignore" :
+ (mode == GENERIC_PASSTHROUGH) ? "passthrough" :
+ (mode == GENERIC_IGNORE) ? "ignore" : "UNKNOWN");
+
+ for (i = start; i <= end; i++) {
+ switch (mode) {
+ case GENERIC_PRINT_AND_PASSTHROUGH:
+ if (v3_dev_hook_io(dev, i,
+ &generic_read_port_print_and_passthrough,
+ &generic_write_port_print_and_passthrough) == -1) {
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i);
+ return -1;
+ }
+ break;
+
+ case GENERIC_PRINT_AND_IGNORE:
+ if (v3_dev_hook_io(dev, i,
+ &generic_read_port_print_and_ignore,
+ &generic_write_port_print_and_ignore) == -1) {
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i);
+ return -1;
+ }
+ break;
+ case GENERIC_PASSTHROUGH:
+ if (v3_dev_hook_io(dev, i,
+ &generic_read_port_passthrough,
+ &generic_write_port_passthrough) == -1) {
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i);
+ return -1;
+ }
+ break;
+ case GENERIC_IGNORE:
+ if (v3_dev_hook_io(dev, i,
+ &generic_read_port_ignore,
+ &generic_write_port_ignore) == -1) {
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i);
+ return -1;
+ }
+ break;
+ default:
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): huh?\n", state->name);
+ break;
}
- }
-
- list_del(&(cur->range_link));
- state->num_irq_ranges--;
- V3_Free(cur);
}
- } else {
- PrintDebug("generic: unhooking irqs not supported\n");
- }
+
+ return 0;
+}
- if (MEM_HOOKS) {
- struct mem_range * tmp;
- struct mem_range * cur;
+static int add_mem_range(struct vm_device * dev, addr_t start, addr_t end, generic_mode_t mode) {
+
+ struct generic_internal *state = (struct generic_internal *) dev->private_data;
+
+ PrintDebug(VM_NONE, VCORE_NONE, "generic (%s): adding memory range 0x%p to 0x%p as %s\n", state->name,
+ (void*)start, (void*)end,
+ (mode == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" :
+ (mode == GENERIC_PRINT_AND_IGNORE) ? "print-and-ignore" :
+ (mode == GENERIC_PASSTHROUGH) ? "passthrough" :
+ (mode == GENERIC_IGNORE) ? "ignore" : "UNKNOWN");
+
+ switch (mode) {
+ case GENERIC_PRINT_AND_PASSTHROUGH:
+ if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1,
+ &generic_read_mem_print_and_passthrough,
+ &generic_write_mem_print_and_passthrough, dev) == -1) {
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end);
+ return -1;
+ }
+ break;
+
+ case GENERIC_PRINT_AND_IGNORE:
+ if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1,
+ &generic_read_mem_print_and_ignore,
+ &generic_write_mem_print_and_ignore, dev) == -1) {
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end);
+ return -1;
+ }
+ break;
+
+ case GENERIC_PASSTHROUGH:
+ if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1,
+ &generic_read_mem_passthrough,
+ &generic_write_mem_passthrough, dev) == -1) {
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end);
+ return -1;
+ }
+ break;
+
+ case GENERIC_IGNORE:
+ if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1,
+ &generic_read_mem_ignore,
+ &generic_write_mem_ignore, dev) == -1) {
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end);
+ return -1;
+ }
+ break;
+ default:
+ PrintError(VM_NONE, VCORE_NONE, "generic (%s): huh?\n",state->name);
+ break;
+ }
- list_for_each_entry_safe(cur, tmp, &(state->mem_list), range_link) {
+ return 0;
+}
- PrintDebug("generic: unhooking addresses 0x%x to 0x%x\n",
- cur->start, cur->end);
- if (dev_unhook_mem(dev, cur->start, cur->end)) {
- PrintDebug("generic: Can't unhook addresses 0x%x to 0x%x (already unhooked?)\n",
- cur->start, cur->end);
- }
+#if 1
- list_del(&(cur->range_link));
- state->num_mem_ranges--;
- V3_Free(cur);
- }
- } else {
- PrintDebug("generic: unhooking addresses not supported\n");
- }
-
+//This is a hack for host device testing and will be removed
- if (PORT_HOOKS) {
- struct port_range * tmp;
- struct port_range * cur;
-
- list_for_each_entry_safe(cur, tmp, &(state->port_list), range_link) {
- uint_t i;
-
- PrintDebug("generic: unhooking ports 0x%x to 0x%x\n",
- cur->start, cur->end);
-
- for (i = cur->start; i <= cur->end; i++) {
- if (dev_unhook_io(dev, i)) {
- PrintDebug("generic: can't unhook port 0x%x (already unhooked?)\n", i);
+static int osdebug_hcall(struct guest_info *core, uint_t hcall_id, void * priv_data)
+{
+ struct generic_internal * state = (struct generic_internal *)priv_data;
+
+ int msg_len = core->vm_regs.rcx;
+ addr_t msg_gpa = core->vm_regs.rbx;
+ int buf_is_va = core->vm_regs.rdx;
+ int i;
+ uint8_t c;
+ PrintDebug(core->vm_info, core, "generic (%s): handling hypercall (len=%d) as sequence of port writes\n",
+ state->name, msg_len);
+
+
+ for (i=0;i<msg_len;i++) {
+ if (buf_is_va == 1) {
+ if (v3_read_gva_memory(core, msg_gpa+i, 1, &c) != 1) {
+ PrintError(core->vm_info, core, "generic (%s): could not read debug message\n",state->name);
+ return -1;
+ }
+ } else {
+ if (v3_read_gpa_memory(core, msg_gpa+i, 1, &c) != 1) {
+ PrintError(core->vm_info, core, "generic (%s): Could not read debug message\n",state->name);
+ return -1;
+ }
}
- }
-
- list_del(&(cur->range_link));
- state->num_port_ranges--;
- V3_Free(cur);
- }
- } else {
- PrintDebug("generic: unhooking ports not supported\n");
- }
+ if (generic_write_port_print_and_passthrough(core,0xc0c0,&c,1,priv_data)!=1) {
+ PrintError(core->vm_info, core, "generic (%s): write port passthrough failed\n",state->name);
+ return -1;
+ }
+ }
+ return 0;
+}
+#endif
- generic_reset_device(dev);
- return 0;
+#ifdef V3_CONFIG_HOST_DEVICE
+static void generic_intr_update_callback(v3_host_dev_t hdev, v3_guest_dev_t gdev, uint8_t irq, int raise)
+{
+ if (gdev) {
+ struct vm_device *dev = (struct vm_device *) gdev;
+ if (raise) {
+ v3_raise_irq(dev->vm,irq);
+ } else {
+ v3_lower_irq(dev->vm,irq);
+ }
+ }
}
+#endif
+/*
+ The device can be used to forward to the underlying physical device
+ or to a host device that has a given url. Both memory and ports can be forwarded as
+ GENERIC_PASSTHROUGH => send writes and reads to physical device or host
+ GENERIC_PRINT_AND_PASSTHROUGH => also print what it's doing
+ GENERIC_IGNORE => ignore writes and reads
+ GENERIC_PRINT_AND_PASSTHROUGH => also print what it's doing
-static struct vm_device_ops dev_ops = {
- .init = generic_init_device,
- .deinit = generic_deinit_device,
- .reset = generic_reset_device,
- .start = generic_start_device,
- .stop = generic_stop_device,
-};
+ The purpose of the "PRINT" variants is to make it easy to spy on
+ device interactions (although you will not see DMA or interrupts)
+ <device class="generic" id="my_id"
+ empty | forward="physical_device" or forward="host_device" hostdev="url">
+ (empty implies physical_dev)
-int v3_generic_add_port_range(struct vm_device * dev, uint_t start, uint_t end, uint_t type) {
+ <ports>
+ <start>portno1</start>
+ <end>portno2</end> => portno1 through portno2 (inclusive)
+ <mode>PRINT_AND_PASSTHROUGH</mode> (as above)
+ </ports>
- if (PORT_HOOKS) {
- struct generic_internal * state = (struct generic_internal *)(dev->private_data);
+ <memory>
+ <start>gpa1</start>
+ <end>gpa2</end> => memory addreses gpa1 through gpa2 (inclusive); page granularity
+ <mode> ... as above </mode>
+ </memory>
- struct port_range * range = (struct port_range *)V3_Malloc(sizeof(struct port_range));
- range->start = start;
- range->end = end;
- range->type = type;
-
-
- PrintDebug("generic: Adding Port Range: 0x%x to 0x%x as %x\n",
- range->start, range->end,
- (range->type == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : "print-and-ignore");
-
- list_add(&(range->range_link), &(state->port_list));
- state->num_port_ranges++;
- } else {
- PrintDebug("generic: hooking IO ports not supported\n");
- return -1;
- }
+*/
- return 0;
-}
+static int generic_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
+ struct generic_internal * state = NULL;
+ char * dev_id = v3_cfg_val(cfg, "ID");
+ char * forward = v3_cfg_val(cfg, "forward");
+#ifdef V3_CONFIG_HOST_DEVICE
+ char * host_dev = v3_cfg_val(cfg, "hostdev");
+#endif
+ v3_cfg_tree_t * port_cfg = v3_cfg_subtree(cfg, "ports");
+ v3_cfg_tree_t * mem_cfg = v3_cfg_subtree(cfg, "memory");
-int v3_generic_add_mem_range(struct vm_device * dev, void * start, void * end, uint_t type) {
- if (MEM_HOOKS) {
- struct generic_internal * state = (struct generic_internal *)(dev->private_data);
+ state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal));
+
+ if (state == NULL) {
+ PrintError(vm, VCORE_NONE, "generic (%s): could not allocate generic state\n",dev_id);
+ return -1;
+ }
- struct mem_range * range = (struct mem_range *)V3_Malloc(sizeof(struct mem_range));
- range->start = start;
- range->end = end;
- range->type = type;
+ memset(state, 0, sizeof(struct generic_internal));
+ strncpy(state->name,dev_id,MAX_NAME);
+ state->name[MAX_NAME-1] = 0;
+
+ if (!forward) {
+ state->forward_type=GENERIC_PHYSICAL;
+ } else {
+ if (!strcasecmp(forward,"physical_device")) {
+ state->forward_type=GENERIC_PHYSICAL;
+ } else if (!strcasecmp(forward,"host_device")) {
+#ifdef V3_CONFIG_HOST_DEVICE
+ state->forward_type=GENERIC_HOST;
+#else
+ PrintError(vm, VCORE_NONE, "generic (%s): cannot configure host device since host device support is not built in\n", state->name);
+ V3_Free(state);
+ return -1;
+#endif
+ } else {
+ PrintError(vm, VCORE_NONE, "generic (%s): unknown forwarding type \"%s\"\n", state->name, forward);
+ V3_Free(state);
+ return -1;
+ }
+ }
- list_add(&(range->range_link), &(state->port_list));
- state->num_mem_ranges++;
- } else {
- PrintDebug("generic: hooking memory not supported\n");
- return -1;
- }
+ struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, state);
- return 0;
-}
+ if (dev == NULL) {
+ PrintError(vm, VCORE_NONE, "generic: could not attach device %s\n", state->name);
+ V3_Free(state);
+ return -1;
+ }
+ state->dev=dev;
+
+
+#ifdef V3_CONFIG_HOST_DEVICE
+ if (state->forward_type==GENERIC_HOST) {
+ if (!host_dev) {
+ PrintError(vm, VCORE_NONE, "generic (%s): host forwarding requested, but no host device given\n", state->name);
+ v3_remove_device(dev);
+ return -1;
+ } else {
+ state->host_dev = v3_host_dev_open(host_dev,V3_BUS_CLASS_DIRECT,dev,generic_intr_update_callback,vm);
+ if (!(state->host_dev)) {
+ PrintError(vm, VCORE_NONE, "generic (%s): unable to open host device \"%s\"\n", state->name,host_dev);
+ v3_remove_device(dev);
+ return -1;
+ } else {
+ PrintDebug(vm, VCORE_NONE, "generic (%s): successfully attached host device \"%s\"\n", state->name,host_dev);
+ }
+ }
+ }
+#endif
-int v3_generic_add_irq_range(struct vm_device * dev, uint_t start, uint_t end, uint_t type) {
+ PrintDebug(vm, VCORE_NONE, "generic (%s): init_device\n", state->name);
- if (IRQ_HOOKS) {
- struct generic_internal * state = (struct generic_internal *)(dev->private_data);
-
- struct irq_range * range = (struct irq_range *)V3_Malloc(sizeof(struct irq_range));
- range->start = start;
- range->end = end;
- range->type = type;
-
- list_add(&(range->range_link), &(state->port_list));
- state->num_irq_ranges++;
- } else {
- PrintDebug("generic: hooking IRQs not supported\n");
- return -1;
- }
+ // scan port list....
+ while (port_cfg) {
+ uint16_t start = atox(v3_cfg_val(port_cfg, "start"));
+ uint16_t end = atox(v3_cfg_val(port_cfg, "end"));
+ char * mode_str = v3_cfg_val(port_cfg, "mode");
+ if (!mode_str) {
+ PrintError(vm, VCORE_NONE, "generic (%s): error getting port mode\n", state->name);
+ return -1;
+ }
+ generic_mode_t mode = GENERIC_IGNORE;
+ if (strcasecmp(mode_str, "print_and_ignore") == 0) {
+ mode = GENERIC_PRINT_AND_IGNORE;
+ } else if (strcasecmp(mode_str, "print_and_passthrough") == 0) {
+ mode = GENERIC_PRINT_AND_PASSTHROUGH;
+ } else if (strcasecmp(mode_str, "passthrough") == 0) {
+ mode = GENERIC_PASSTHROUGH;
+ } else if (strcasecmp(mode_str, "ignore") == 0) {
+ mode = GENERIC_IGNORE;
+ } else {
+ PrintError(vm, VCORE_NONE, "generic (%s): invalid mode %s in adding ports\n", state->name, mode_str);
+ v3_remove_device(dev);
+ return -1;
+ }
+
+
+ if (add_port_range(dev, start, end, mode) == -1) {
+ PrintError(vm, VCORE_NONE, "generic (%s): could not add port range 0x%x to 0x%x\n", state->name, start, end);
+ v3_remove_device(dev);
+ return -1;
+ }
- return 0;
-}
+ port_cfg = v3_cfg_next_branch(port_cfg);
+ }
+ // scan memory list....
+ while (mem_cfg) {
+ addr_t start = atox(v3_cfg_val(mem_cfg, "start"));
+ addr_t end = atox(v3_cfg_val(mem_cfg, "end"));
+ char * mode_str = v3_cfg_val(mem_cfg, "mode");
+ generic_mode_t mode = GENERIC_IGNORE;
+
+ if (strcasecmp(mode_str, "print_and_ignore") == 0) {
+ mode = GENERIC_PRINT_AND_IGNORE;
+ } else if (strcasecmp(mode_str, "print_and_passthrough") == 0) {
+ mode = GENERIC_PRINT_AND_PASSTHROUGH;
+ } else if (strcasecmp(mode_str, "passthrough") == 0) {
+ mode = GENERIC_PASSTHROUGH;
+ } else if (strcasecmp(mode_str, "ignore") == 0) {
+ mode = GENERIC_IGNORE;
+ } else {
+ PrintError(vm, VCORE_NONE, "generic (%s): invalid mode %s for adding memory\n", state->name, mode_str);
+ v3_remove_device(dev);
+ return -1;
+ }
+ if (state->num_mem_hooks>=MAX_MEM_HOOKS) {
+ PrintError(vm, VCORE_NONE, "generic (%s): cannot add another memory hook (increase MAX_MEM_HOOKS)\n", state->name);
+ v3_remove_device(dev);
+ return -1;
+ }
+
+ if (add_mem_range(dev, start, end, mode) == -1) {
+ PrintError(vm, VCORE_NONE, "generic (%s): could not add memory range 0x%p to 0x%p\n", state->name, (void*)start, (void*)end);
+ v3_remove_device(dev);
+ return -1;
+ }
+
+ state->mem_hook[state->num_mem_hooks] = start;
+ state->num_mem_hooks++;
-struct vm_device * create_generic() {
- struct generic_internal * generic_state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal));
-
- generic_state->num_port_ranges = 0;
- generic_state->num_mem_ranges = 0;
- generic_state->num_irq_ranges = 0;
+ mem_cfg = v3_cfg_next_branch(port_cfg);
+ }
- INIT_LIST_HEAD(&(generic_state->port_list));
- INIT_LIST_HEAD(&(generic_state->mem_list));
- INIT_LIST_HEAD(&(generic_state->irq_list));
+#if 1
+ // hack for os debug testing
+ if (strcasecmp(state->name,"os debug")==0) {
+ PrintDebug(vm, VCORE_NONE, "generic (%s): adding hypercall for os debug device\n", state->name);
+ v3_register_hypercall(vm,0xc0c0,osdebug_hcall,state);
+ }
+#endif
- struct vm_device * device = create_device("GENERIC", &dev_ops, generic_state);
+ PrintDebug(vm, VCORE_NONE, "generic (%s): initialization complete\n", state->name);
- return device;
+ return 0;
}
+
+device_register("GENERIC", generic_init)
