#include <palacios/vmm.h>
#include <palacios/vm_guest.h>
+#include <palacios/vmm_ctrl_regs.h>
-#ifndef DEBUG_INTERRUPTS
+#include <palacios/vmm_lock.h>
+
+#ifndef CONFIG_DEBUG_INTERRUPTS
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
struct intr_controller {
struct intr_ctrl_ops * ctrl_ops;
-
+
void * priv_data;
struct list_head ctrl_node;
};
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;
info->intr_state.irq_pending = 0;
+ info->intr_state.irq_started = 0;
info->intr_state.irq_vector = 0;
-
INIT_LIST_HEAD(&(info->intr_state.controller_list));
+ v3_lock_init(&(info->intr_state.irq_lock));
+
memset((uchar_t *)(info->intr_state.hooks), 0, sizeof(struct v3_irq_hook *) * 256);
}
-
-
-
-int v3_raise_exception_with_error(struct guest_info * info, uint_t excp, uint_t error_code) {
+int v3_raise_virq(struct guest_info * info, int irq) {
struct v3_intr_state * intr_state = &(info->intr_state);
+ int major = irq / 8;
+ int minor = irq % 8;
- 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("[v3_raise_exception_with_error] error code: %x\n", error_code);
- } else {
- PrintError("exception already pending, currently not implemented\n");
- return -1;
- }
-
+ intr_state->virq_map[major] |= (1 << minor);
+
return 0;
}
-int v3_raise_exception(struct guest_info * info, uint_t excp) {
+int v3_lower_virq(struct guest_info * info, int irq) {
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;
- intr_state->excp_error_code = 0;
- intr_state->excp_error_code_valid = 0;
- } else {
- PrintError("exception already pending, currently not implemented\n");
- return -1;
- }
+ int major = irq / 8;
+ int minor = irq % 8;
+
+ intr_state->virq_map[major] &= ~(1 << minor);
return 0;
}
struct intr_controller * ctrl = NULL;
struct v3_intr_state * intr_state = &(info->intr_state);
- PrintDebug("[v3_lower_irq]\n");
+ // PrintDebug("[v3_lower_irq]\n");
+ addr_t irq_state = v3_lock_irqsave(intr_state->irq_lock);
list_for_each_entry(ctrl, &(intr_state->controller_list), ctrl_node) {
- ctrl->ctrl_ops->lower_intr(ctrl->priv_data, irq);
+ ctrl->ctrl_ops->lower_intr(info, ctrl->priv_data, irq);
}
+ v3_unlock_irqrestore(intr_state->irq_lock, irq_state);
+
return 0;
}
struct intr_controller * ctrl = NULL;
struct v3_intr_state * intr_state = &(info->intr_state);
- PrintDebug("[v3_raise_irq (%d)]\n", irq);
+ // PrintDebug("[v3_raise_irq (%d)]\n", irq);
+ addr_t irq_state = v3_lock_irqsave(intr_state->irq_lock);
list_for_each_entry(ctrl, &(intr_state->controller_list), ctrl_node) {
- ctrl->ctrl_ops->raise_intr(ctrl->priv_data, irq);
+ ctrl->ctrl_ops->raise_intr(info, ctrl->priv_data, irq);
}
+ v3_unlock_irqrestore(intr_state->irq_lock, irq_state);
+
return 0;
}
+void v3_clear_pending_intr(struct guest_info * core) {
+ struct v3_intr_state * intr_state = &(core->intr_state);
+
+ intr_state->irq_pending = 0;
+
+}
+
-int v3_intr_pending(struct guest_info * info) {
+v3_intr_type_t v3_intr_pending(struct guest_info * info) {
struct v3_intr_state * intr_state = &(info->intr_state);
+ struct intr_controller * ctrl = NULL;
+ int ret = V3_INVALID_INTR;
+ int i = 0;
// PrintDebug("[intr_pending]\n");
- if (intr_state->excp_pending == 1) {
- return 1;
- } else {
- struct intr_controller * ctrl = NULL;
+ addr_t irq_state = v3_lock_irqsave(intr_state->irq_lock);
+
+ // VIRQs have priority
+ for (i = 0; i < MAX_IRQ / 8; i++) {
+ if (intr_state->virq_map[i] != 0) {
+ ret = V3_VIRTUAL_IRQ;
+ break;
+ }
+ }
+ if (ret == V3_INVALID_INTR) {
list_for_each_entry(ctrl, &(intr_state->controller_list), ctrl_node) {
- if (ctrl->ctrl_ops->intr_pending(ctrl->priv_data) == 1) {
- return 1;
+ if (ctrl->ctrl_ops->intr_pending(info, ctrl->priv_data) == 1) {
+ ret = V3_EXTERNAL_IRQ;
+ break;
}
}
}
- return 0;
+ v3_unlock_irqrestore(intr_state->irq_lock, irq_state);
+
+ return ret;
}
-uint_t v3_get_intr_number(struct guest_info * info) {
+uint32_t v3_get_intr(struct guest_info * info) {
struct v3_intr_state * intr_state = &(info->intr_state);
+ struct intr_controller * ctrl = NULL;
+ uint_t ret = 0;
+ int i = 0;
+ int j = 0;
+
+ addr_t irq_state = v3_lock_irqsave(intr_state->irq_lock);
+
+ // virqs have priority
+ for (i = 0; i < MAX_IRQ / 8; i++) {
+ if (intr_state->virq_map[i] != 0) {
+ for (j = 0; j < 8; j++) {
+ if (intr_state->virq_map[i] & (1 << j)) {
+ ret = (i * 8) + j;
+ break;
+ }
+ }
+ break;
+ }
+ }
- if (intr_state->excp_pending == 1) {
- return intr_state->excp_num;
- } else {
- struct intr_controller * ctrl = NULL;
-
+ if (!ret) {
list_for_each_entry(ctrl, &(intr_state->controller_list), ctrl_node) {
- if (ctrl->ctrl_ops->intr_pending(ctrl->priv_data)) {
- uint_t intr_num = ctrl->ctrl_ops->get_intr_number(ctrl->priv_data);
-
- PrintDebug("[get_intr_number] intr_number = %d\n", intr_num);
-
- return intr_num;
+ if (ctrl->ctrl_ops->intr_pending(info, ctrl->priv_data)) {
+ uint_t intr_num = ctrl->ctrl_ops->get_intr_number(info, ctrl->priv_data);
+
+ // PrintDebug("[get_intr_number] intr_number = %d\n", intr_num);
+ ret = intr_num;
+ break;
}
}
}
- return 0;
-}
+ v3_unlock_irqrestore(intr_state->irq_lock, irq_state);
+ return ret;
+}
+/*
intr_type_t v3_get_intr_type(struct guest_info * info) {
struct v3_intr_state * intr_state = &(info->intr_state);
+ struct intr_controller * ctrl = NULL;
+ intr_type_t type = V3_INVALID_INTR;
- if (intr_state->excp_pending) {
- PrintDebug("[get_intr_type] Exception\n");
- return EXCEPTION;
- } else {
- struct intr_controller * ctrl = NULL;
+ addr_t irq_state = v3_lock_irqsave(intr_state->irq_lock);
- list_for_each_entry(ctrl, &(intr_state->controller_list), ctrl_node) {
- if (ctrl->ctrl_ops->intr_pending(ctrl->priv_data) == 1) {
- PrintDebug("[get_intr_type] External_irq\n");
- return EXTERNAL_IRQ;
- }
+ list_for_each_entry(ctrl, &(intr_state->controller_list), ctrl_node) {
+ if (ctrl->ctrl_ops->intr_pending(ctrl->priv_data) == 1) {
+ //PrintDebug("[get_intr_type] External_irq\n");
+ type = V3_EXTERNAL_IRQ;
+ break;
}
}
- PrintDebug("[get_intr_type] Invalid_Intr\n");
- return INVALID_INTR;
-}
+#ifdef CONFIG_DEBUG_INTERRUPTS
+ if (type == V3_INVALID_INTR) {
+ PrintError("[get_intr_type] Invalid_Intr\n");
+ }
+#endif
+ v3_unlock_irqrestore(intr_state->irq_lock, irq_state);
+
+ return type;
+}
+*/
-int v3_injecting_intr(struct guest_info * info, uint_t intr_num, intr_type_t type) {
+int v3_injecting_intr(struct guest_info * info, uint_t intr_num, v3_intr_type_t type) {
struct v3_intr_state * intr_state = &(info->intr_state);
- if (type == EXCEPTION) {
- 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) {
+ if (type == V3_EXTERNAL_IRQ) {
struct intr_controller * ctrl = NULL;
- PrintDebug("[injecting_intr] External_Irq with intr_num = %x\n", intr_num);
+ addr_t irq_state = v3_lock_irqsave(intr_state->irq_lock);
+
+ // PrintDebug("[injecting_intr] External_Irq with intr_num = %x\n", intr_num);
list_for_each_entry(ctrl, &(intr_state->controller_list), ctrl_node) {
- ctrl->ctrl_ops->begin_irq(ctrl->priv_data, intr_num);
+ ctrl->ctrl_ops->begin_irq(info, ctrl->priv_data, intr_num);
}
+
+ v3_unlock_irqrestore(intr_state->irq_lock, irq_state);
}
return 0;
