+/*
+ * 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, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: 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 <palacios/vmm_intr.h>
#include <palacios/vmm.h>
#define PrintDebug(fmt, args...)
#endif
-#ifdef DEBUG_RAMDISK
-#define Ramdisk_Print_Intr(_f, _a...) PrintTrace("\nvmm_intr.c(%d) "_f, __LINE__, ## _a)
-#else
-#define Ramdisk_Print_Intr(_f, _a...)
-#endif
-/*Zheng 07/30/2008*/
-void init_interrupt_state(struct guest_info * info) {
+
+
+void v3_init_interrupt_state(struct guest_info * info) {
info->intr_state.excp_pending = 0;
info->intr_state.excp_num = 0;
info->intr_state.excp_error_code = 0;
+ memset((uchar_t *)(info->intr_state.hooks), 0, sizeof(struct v3_irq_hook *) * 256);
+
info->vm_ops.raise_irq = &v3_raise_irq;
- info->vm_ops.lower_irq = &v3_lower_irq; //Zheng added
+ info->vm_ops.lower_irq = &v3_lower_irq;
}
-void set_intr_controller(struct guest_info * info, struct intr_ctrl_ops * ops, void * state) {
+void v3_set_intr_controller(struct guest_info * info, struct intr_ctrl_ops * ops, void * state) {
info->intr_state.controller = ops;
info->intr_state.controller_state = state;
}
-// This structure is used to dispatch
-// interrupts delivered to vmm via deliver interrupt to vmm
-// it is what we put into the opaque field given to
-// the host os when we install the handler
-struct vmm_intr_decode {
- void (*handler)(struct vmm_intr_state *state);
- // This opaque is user supplied by the caller
- // of hook_irq_new
- void *opaque;
-};
-int v3_hook_irq(uint_t irq,
- void (*handler)(struct vmm_intr_state *state),
- void *opaque)
+static inline struct v3_irq_hook * get_irq_hook(struct guest_info * info, uint_t irq) {
+ V3_ASSERT(irq <= 256);
+ return info->intr_state.hooks[irq];
+}
+
+
+int v3_hook_irq(struct guest_info * info,
+ uint_t irq,
+ int (*handler)(struct guest_info * info, struct v3_interrupt * intr, void * priv_data),
+ void * priv_data)
{
- struct vmm_intr_decode *d = (struct vmm_intr_decode *)V3_Malloc(sizeof(struct vmm_intr_decode));
+ struct v3_irq_hook * hook = (struct v3_irq_hook *)V3_Malloc(sizeof(struct v3_irq_hook));
- if (!d) { return -1; }
+ if (hook == NULL) {
+ return -1;
+ }
- d->handler = handler;
- d->opaque = opaque;
+ if (get_irq_hook(info, irq) != NULL) {
+ PrintError("IRQ %d already hooked\n", irq);
+ return -1;
+ }
+
+ hook->handler = handler;
+ hook->priv_data = priv_data;
- if (V3_Hook_Interrupt(irq,d)) {
- PrintError("hook_irq: failed to hook irq 0x%x to decode 0x%x\n", irq,d);
+ info->intr_state.hooks[irq] = hook;
+
+ if (V3_Hook_Interrupt(info, irq)) {
+ PrintError("hook_irq: failed to hook irq %d\n", irq);
return -1;
} else {
- PrintDebug("hook_irq: hooked irq 0x%x to decode 0x%x\n", irq,d);
+ PrintDebug("hook_irq: hooked irq %d\n", irq);
return 0;
}
}
-void deliver_interrupt_to_vmm(struct vmm_intr_state *state)
-{
- PrintDebug("deliver_interrupt_to_vmm: state=0x%x\n",state);
+static int passthrough_irq_handler(struct guest_info * info, struct v3_interrupt * intr, void * priv_data)
+{
- struct vmm_intr_decode *d = (struct vmm_intr_decode *)(state->opaque);
-
- void *temp = state->opaque;
- state->opaque = d->opaque;
+ PrintDebug("[passthrough_irq_handler] raise_irq=%d (guest=0x%x)\n", intr->irq, info);
+ return v3_raise_irq(info, intr->irq);
- d->handler(state);
-
- state->opaque=temp;
}
-
-static void guest_injection_irq_handler(struct vmm_intr_state *state)
+int v3_hook_passthrough_irq(struct guest_info * info, uint_t irq)
{
- PrintDebug("guest_irq_injection: state=0x%x\n",state);
- struct guest_info *guest = (struct guest_info *)(state->opaque);
+ int rc = v3_hook_irq(info,
+ irq,
+ passthrough_irq_handler,
+ NULL);
- PrintDebug("guest_irq_injection: injecting irq 0x%x into guest 0x%x\n",state->irq,guest);
- Ramdisk_Print_Intr("[guest_injection_irq_handler] raise_irq = %x\n", state->irq);
- guest->vm_ops.raise_irq(guest,state->irq);
+ if (rc) {
+ PrintError("guest_irq_injection: failed to hook irq 0x%x (guest=0x%x)\n", irq, info);
+ return -1;
+ } else {
+ PrintDebug("guest_irq_injection: hooked irq 0x%x (guest=0x%x)\n", irq, info);
+ return 0;
+ }
}
-int v3_hook_irq_for_guest_injection(struct guest_info *info, int irq)
-{
- int rc = v3_hook_irq(irq,
- guest_injection_irq_handler,
- info);
- if (rc) {
- PrintError("guest_irq_injection: failed to hook irq 0x%x for guest 0x%x\n", irq,info);
+
+int v3_deliver_irq(struct guest_info * info, struct v3_interrupt * intr) {
+ PrintDebug("v3_deliver_irq: irq=%d state=0x%x, \n", intr->irq, intr);
+
+ struct v3_irq_hook * hook = get_irq_hook(info, intr->irq);
+
+ if (hook == NULL) {
+ PrintError("Attempting to deliver interrupt to non registered hook(irq=%d)\n", intr->irq);
return -1;
- } else {
- PrintDebug("guest_irq_injection: hooked irq 0x%x for guest 0x%x\n", irq,info);
- return 0;
}
+
+ return hook->handler(info, intr, hook->priv_data);
}
+
+
+
+
int v3_raise_exception_with_error(struct guest_info * info, uint_t excp, uint_t error_code) {
- struct vm_intr * intr_state = &(info->intr_state);
+ struct v3_intr_state * intr_state = &(info->intr_state);
if (intr_state->excp_pending == 0) {
intr_state->excp_pending = 1;
intr_state->excp_num = excp;
intr_state->excp_error_code = error_code;
intr_state->excp_error_code_valid = 1;
- PrintDebug("Raising exception with error code: %x\n", error_code);
- Ramdisk_Print_Intr("[v3_raise_exception_with_error] error code: %x\n", error_code);
+ PrintDebug("[v3_raise_exception_with_error] error code: %x\n", error_code);
} else {
PrintError("exception already pending, currently not implemented\n");
- Ramdisk_Print_Intr("[v3_raise_exception_with_error] not implemented\n");
return -1;
}
}
int v3_raise_exception(struct guest_info * info, uint_t excp) {
- struct vm_intr * intr_state = &(info->intr_state);
- Ramdisk_Print_Intr("[v3_raise_exception]\n");
+ struct v3_intr_state * intr_state = &(info->intr_state);
+ PrintDebug("[v3_raise_exception]\n");
if (intr_state->excp_pending == 0) {
intr_state->excp_pending = 1;
intr_state->excp_num = excp;
return 0;
}
-/*Zheng 07/30/2008*/
int v3_lower_irq(struct guest_info * info, int irq) {
// Look up PIC and resend
V3_ASSERT(info);
V3_ASSERT(info->intr_state.controller);
- V3_ASSERT(info->intr_state.controller->raise_intr);
+ V3_ASSERT(info->intr_state.controller->lower_intr);
- Ramdisk_Print_Intr("[v3_lower_irq]\n");
+ PrintDebug("[v3_lower_irq]\n");
- // if ((info->intr_state.controller) &&
- // (info->intr_state.controller->raise_intr)) {
+ if ((info->intr_state.controller) &&
+ (info->intr_state.controller->lower_intr)) {
info->intr_state.controller->lower_intr(info->intr_state.controller_state, irq);
- //} else {
- // PrintDebug("There is no registered Interrupt Controller... (NULL POINTER)\n");
- // return -1;
- //}
+ } else {
+ PrintError("There is no registered Interrupt Controller... (NULL POINTER)\n");
+ return -1;
+ }
+
return 0;
}
V3_ASSERT(info->intr_state.controller);
V3_ASSERT(info->intr_state.controller->raise_intr);
- Ramdisk_Print_Intr("[v3_raise_irq]\n");
+ PrintDebug("[v3_raise_irq]\n");
- // if ((info->intr_state.controller) &&
- // (info->intr_state.controller->raise_intr)) {
+ if ((info->intr_state.controller) &&
+ (info->intr_state.controller->raise_intr)) {
info->intr_state.controller->raise_intr(info->intr_state.controller_state, irq);
- //} else {
- // PrintDebug("There is no registered Interrupt Controller... (NULL POINTER)\n");
- // return -1;
- //}
+ } else {
+ PrintError("There is no registered Interrupt Controller... (NULL POINTER)\n");
+ return -1;
+ }
+
return 0;
}
-int intr_pending(struct guest_info * info) {
- struct vm_intr * intr_state = &(info->intr_state);
+int v3_intr_pending(struct guest_info * info) {
+ struct v3_intr_state * intr_state = &(info->intr_state);
- // Ramdisk_Print_Intr("[intr_pending]\n");
+ // PrintDebug("[intr_pending]\n");
if (intr_state->excp_pending == 1) {
return 1;
} else if (intr_state->controller->intr_pending(intr_state->controller_state) == 1) {
}
-uint_t get_intr_number(struct guest_info * info) {
- struct vm_intr * intr_state = &(info->intr_state);
+uint_t v3_get_intr_number(struct guest_info * info) {
+ struct v3_intr_state * intr_state = &(info->intr_state);
if (intr_state->excp_pending == 1) {
return intr_state->excp_num;
} else if (intr_state->controller->intr_pending(intr_state->controller_state)) {
- Ramdisk_Print_Intr("[get_intr_number] intr_number = %d\n", intr_state->controller->get_intr_number(intr_state->controller_state));
+ PrintDebug("[get_intr_number] intr_number = %d\n", intr_state->controller->get_intr_number(intr_state->controller_state));
return intr_state->controller->get_intr_number(intr_state->controller_state);
}
}
-intr_type_t get_intr_type(struct guest_info * info) {
- struct vm_intr * intr_state = &(info->intr_state);
+intr_type_t v3_get_intr_type(struct guest_info * info) {
+ struct v3_intr_state * intr_state = &(info->intr_state);
if (intr_state->excp_pending) {
- Ramdisk_Print_Intr("[get_intr_type] Exception\n");
+ PrintDebug("[get_intr_type] Exception\n");
return EXCEPTION;
} else if (intr_state->controller->intr_pending(intr_state->controller_state)) {
- Ramdisk_Print_Intr("[get_intr_type] External_irq\n");
+ PrintDebug("[get_intr_type] External_irq\n");
return EXTERNAL_IRQ;
}
- Ramdisk_Print_Intr("[get_intr_type] Invalid_Intr\n");
+ PrintDebug("[get_intr_type] Invalid_Intr\n");
return INVALID_INTR;
}
-int injecting_intr(struct guest_info * info, uint_t intr_num, intr_type_t type) {
- struct vm_intr * intr_state = &(info->intr_state);
+int v3_injecting_intr(struct guest_info * info, uint_t intr_num, intr_type_t type) {
+ struct v3_intr_state * intr_state = &(info->intr_state);
if (type == EXCEPTION) {
- Ramdisk_Print_Intr("[injecting_intr] Exception\n");
+ PrintDebug("[injecting_intr] Exception\n");
intr_state->excp_pending = 0;
intr_state->excp_num = 0;
intr_state->excp_error_code = 0;
intr_state->excp_error_code_valid = 0;
} else if (type == EXTERNAL_IRQ) {
- Ramdisk_Print_Intr("[injecting_intr] External_Irq with intr_num = %x\n", intr_num);
+ PrintDebug("[injecting_intr] External_Irq with intr_num = %x\n", intr_num);
return intr_state->controller->begin_irq(intr_state->controller_state, intr_num);
}
