* 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>
-
-
-#ifndef DEBUG_GENERIC
+#ifndef CONFIG_DEBUG_GENERIC
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
-#define PORT_HOOKS 1
-
+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 port_range {
- uint_t start;
- uint_t end;
- uint_t type;
- struct list_head range_link;
};
-static int generic_reset_device(struct vm_device * dev) {
- PrintDebug("generic: reset device\n");
- return 0;
-}
-
-
-
-
-
-static int generic_start_device(struct vm_device * dev) {
- PrintDebug("generic: start device\n");
- return 0;
-}
+static int generic_write_port_passthrough(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
+ uint_t i;
+ 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]);
+ }
+ }
-static int generic_stop_device(struct vm_device * dev) {
- PrintDebug("generic: stop device\n");
- return 0;
+ return length;
}
-
-
-
-static int generic_write_port_passthrough(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev) {
+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;
PrintDebug("generic: writing 0x");
for (i = 0; i < length; i++) {
- PrintDebug("%x", ((uchar_t*)src)[i]);
+ PrintDebug("%x", ((uint8_t *)src)[i]);
}
PrintDebug(" to port 0x%x ... ", port);
+ rc=generic_write_port_passthrough(core,port,src,length,priv_data);
+
+ PrintDebug(" done\n");
+
+ return rc;
+}
+
+static int generic_read_port_passthrough(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
+ uint_t i;
switch (length) {
case 1:
- v3_outb(port,((uchar_t*)src)[0]);
+ ((uint8_t *)src)[0] = v3_inb(port);
break;
case 2:
- v3_outw(port,((ushort_t*)src)[0]);
+ ((uint16_t *)src)[0] = v3_inw(port);
break;
case 4:
- v3_outdw(port,((uint_t*)src)[0]);
+ ((uint32_t *)src)[0] = v3_indw(port);
break;
default:
for (i = 0; i < length; i++) {
- v3_outb(port, ((uchar_t*)src)[i]);
+ ((uint8_t *)src)[i] = v3_inb(port);
}
- } //switch length
-
+ }
- PrintDebug(" done\n");
-
return length;
}
-static int generic_read_port_passthrough(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev) {
+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;
+
PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port);
- 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
+ rc=generic_read_port_passthrough(core,port,src,length,priv_data);
PrintDebug(" done ... read 0x");
- for (i = 0; i < length; i++) {
- PrintDebug("%x", ((uchar_t*)src)[i]);
+ for (i = 0; i < rc; i++) {
+ PrintDebug("%x", ((uint8_t *)src)[i]);
}
PrintDebug("\n");
- return length;
+ return rc;
}
-static int generic_write_port_ignore(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev) {
- uint_t i;
- PrintDebug("generic: writing 0x");
+static int generic_read_port_ignore(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
+
+ memset((uint8_t *)src, 0, length);
- for (i = 0; i < length; i++) {
- PrintDebug("%x", ((uchar_t*)src)[i]);
- }
-
- PrintDebug(" to port 0x%x ... ignored\n", port);
-
return length;
}
-static int generic_read_port_ignore(ushort_t port,
- void * src,
- uint_t length,
- struct vm_device * dev) {
-
+static int generic_read_port_print_and_ignore(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
+
PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port);
- memset((char*)src, 0, length);
+ memset((uint8_t *)src, 0, length);
PrintDebug(" ignored (return zeroed buffer)\n");
return length;
}
+static int generic_write_port_ignore(struct guest_info * core, uint16_t port, void * src,
+ uint_t length, void * priv_data) {
+ return length;
+}
+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;
-static int generic_init_device(struct vm_device * dev) {
- struct generic_internal * state = (struct generic_internal *)(dev->private_data);
+ PrintDebug("generic: writing 0x%x bytes to port 0x%x ", length, port);
- 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 %s\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 (v3_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 (v3_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);
- }
- }
- }
+ memset((uint8_t *)src, 0, length);
+ PrintDebug(" ignored - data was: 0x");
- }
- } else {
- PrintDebug("generic: hooking ports not supported\n");
+ for (i = 0; i < length; i++) {
+ PrintDebug("%x", ((uint8_t *)src)[i]);
}
+
+ PrintDebug("\n");
-
- return 0;
+ return length;
}
-static int generic_deinit_device(struct vm_device * dev) {
- struct generic_internal * state = (struct generic_internal *)(dev->private_data);
+
+static int generic_free(struct generic_internal * state) {
PrintDebug("generic: deinit_device\n");
- 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 (v3_dev_unhook_io(dev, i)) {
- PrintDebug("generic: can't unhook port 0x%x (already unhooked?)\n", i);
- }
- }
+ V3_Free(state);
+ return 0;
+}
- list_del(&(cur->range_link));
- state->num_port_ranges--;
- V3_Free(cur);
- }
- } else {
- PrintDebug("generic: unhooking ports not supported\n");
- }
- generic_reset_device(dev);
- return 0;
-}
+static struct v3_device_ops dev_ops = {
+ .free = (int (*)(void *))generic_free,
+};
-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,
-};
+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: Adding Port Range: 0x%x to 0x%x as %s\n",
+ start, end,
+ (mode == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : "print-and-ignore");
+
+ for (i = start; i <= end; i++) {
+ if (mode == 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("generic: can't hook port 0x%x (already hooked?)\n", i);
+ return -1;
+ }
+ } else if (mode == 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("generic: can't hook port 0x%x (already hooked?)\n", i);
+ return -1;
+ }
+ } else if (mode == GENERIC_PASSTHROUGH) {
+ if (v3_dev_hook_io(dev, i,
+ &generic_read_port_passthrough,
+ &generic_write_port_passthrough) == -1) {
+ PrintError("generic: can't hook port 0x%x (already hooked?)\n", i);
+ return -1;
+ }
+ } else if (mode == GENERIC_IGNORE) {
+ if (v3_dev_hook_io(dev, i,
+ &generic_read_port_ignore,
+ &generic_write_port_ignore) == -1) {
+ PrintError("generic: can't hook port 0x%x (already hooked?)\n", i);
+ 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");
+ v3_cfg_tree_t * port_cfg = v3_cfg_subtree(cfg, "ports");
-int v3_generic_add_port_range(struct vm_device * dev, uint_t start, uint_t end, uint_t type) {
- if (PORT_HOOKS) {
- struct generic_internal * state = (struct generic_internal *)(dev->private_data);
+ state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal));
- struct port_range * range = (struct port_range *)V3_Malloc(sizeof(struct port_range));
- range->start = start;
- range->end = end;
- range->type = type;
+ if (state == NULL) {
+ PrintError("Could not allocate generic state\n");
+ return -1;
+ }
-
- PrintDebug("generic: Adding Port Range: 0x%x to 0x%x as %s\n",
- range->start, range->end,
- (range->type == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : "print-and-ignore");
+ memset(state, 0, sizeof(struct generic_internal));
- list_add(&(range->range_link), &(state->port_list));
- state->num_port_ranges++;
- } else {
- PrintDebug("generic: hooking IO ports not supported\n");
+ struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, state);
+
+ if (dev == NULL) {
+ PrintError("Could not attach device %s\n", dev_id);
+ V3_Free(state);
return -1;
}
- return 0;
-}
+ PrintDebug("generic: init_device\n");
-struct vm_device * v3_create_generic() {
- struct generic_internal * generic_state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal));
-
- generic_state->num_port_ranges = 0;
+ // 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");
+ 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("Invalid Mode %s\n", mode_str);
+ v3_remove_device(dev);
+ return -1;
+ }
+
+ if (add_port_range(dev, start, end, mode) == -1) {
+ PrintError("Could not add port range %d-%d\n", start, end);
+ v3_remove_device(dev);
+ return -1;
+ }
- INIT_LIST_HEAD(&(generic_state->port_list));
-
- struct vm_device * device = v3_create_device("GENERIC", &dev_ops, generic_state);
+ port_cfg = v3_cfg_next_branch(port_cfg);
+ }
- return device;
+
+ return 0;
}
+
+device_register("GENERIC", generic_init)
