X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_intr.c;h=7e1527c96f14a92a1f9d4bc39e79c5e7af4193a5;hb=0899a5c74318e582f3d6ebec52cc744cdb727734;hp=801e4147f0a8812a064cbee2de562317442a8bce;hpb=c34c7a69079dd6165db965454104f20c7d873c20;p=palacios.git diff --git a/palacios/src/palacios/vmm_intr.c b/palacios/src/palacios/vmm_intr.c index 801e414..7e1527c 100644 --- a/palacios/src/palacios/vmm_intr.c +++ b/palacios/src/palacios/vmm_intr.c @@ -1,32 +1,166 @@ +/* + * 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 + * Copyright (c) 2008, The V3VEE Project + * All rights reserved. + * + * Author: Jack Lange + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ + + #include #include #include +#ifndef DEBUG_INTERRUPTS +#undef PrintDebug +#define PrintDebug(fmt, args...) +#endif + -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; - info->vm_ops.raise_irq = &raise_irq; + memset((uchar_t *)(info->intr_state.hooks), 0, sizeof(struct v3_irq_hook *) * 256); } -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; } -int raise_exception(struct guest_info * info, uint_t excp) { - /* We can't stack exceptions, - but do we need to have some sort of priority? - */ - if (info->intr_state.excp_pending) { - info->intr_state.excp_pending = 1; - info->intr_state.excp_num = excp; + +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 v3_irq_hook * hook = (struct v3_irq_hook *)V3_Malloc(sizeof(struct v3_irq_hook)); + + if (hook == NULL) { + return -1; + } + + if (get_irq_hook(info, irq) != NULL) { + PrintError("IRQ %d already hooked\n", irq); + return -1; + } + + hook->handler = handler; + hook->priv_data = priv_data; + + 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 %d\n", irq); + return 0; + } +} + + + +static int passthrough_irq_handler(struct guest_info * info, struct v3_interrupt * intr, void * priv_data) +{ + + PrintDebug("[passthrough_irq_handler] raise_irq=%d (guest=0x%x)\n", intr->irq, info); + return v3_raise_irq(info, intr->irq); + +} + +int v3_hook_passthrough_irq(struct guest_info * info, uint_t irq) +{ + + int rc = v3_hook_irq(info, + irq, + passthrough_irq_handler, + NULL); + + 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_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; + } + + 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 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("[v3_raise_exception_with_error] error code: %x\n", error_code); + } else { + PrintError("exception already pending, currently not implemented\n"); + return -1; + } + + return 0; +} + +int v3_raise_exception(struct guest_info * info, uint_t excp) { + 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; } @@ -34,27 +168,53 @@ int raise_exception(struct guest_info * info, uint_t excp) { } -int raise_irq(struct guest_info * info, int irq, int error_code) { +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->lower_intr); + + PrintDebug("[v3_lower_irq]\n"); + + if ((info->intr_state.controller) && + (info->intr_state.controller->lower_intr)) { + info->intr_state.controller->lower_intr(info->intr_state.controller_state, irq); + } else { + PrintError("There is no registered Interrupt Controller... (NULL POINTER)\n"); + return -1; + } + + return 0; +} + +int v3_raise_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); - // if ((info->intr_state.controller) && - // (info->intr_state.controller->raise_intr)) { - info->intr_state.controller->raise_intr(info->intr_state.controller_state, irq, error_code); - //} else { - // PrintDebug("There is no registered Interrupt Controller... (NULL POINTER)\n"); - // return -1; - //} + PrintDebug("[v3_raise_irq]\n"); + + if ((info->intr_state.controller) && + (info->intr_state.controller->raise_intr)) { + info->intr_state.controller->raise_intr(info->intr_state.controller_state, irq); + } else { + PrintError("There is no registered Interrupt Controller... (NULL POINTER)\n"); + return -1; + } + return 0; } -int intr_pending(struct vm_intr * intr) { - if (intr->excp_pending) { + +int v3_intr_pending(struct guest_info * info) { + struct v3_intr_state * intr_state = &(info->intr_state); + + // PrintDebug("[intr_pending]\n"); + if (intr_state->excp_pending == 1) { return 1; - } else if (intr->controller->intr_pending(intr->controller_state)) { + } else if (intr_state->controller->intr_pending(intr_state->controller_state) == 1) { return 1; } @@ -64,11 +224,14 @@ int intr_pending(struct vm_intr * intr) { } -uint_t get_intr_number(struct vm_intr * intr) { - if (intr->excp_pending) { - return intr->excp_num; - } else if (intr->controller->intr_pending(intr->controller_state)) { - return intr->controller->get_intr_number(intr->controller_state) + 32; +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)) { + 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); } /* someway to get the [A]PIC intr */ @@ -77,18 +240,39 @@ uint_t get_intr_number(struct vm_intr * intr) { } -uint_t get_intr_type(struct vm_intr * intr) { - if (intr->excp_pending) { +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) { + PrintDebug("[get_intr_type] Exception\n"); return EXCEPTION; - } else if (intr->controller->intr_pending(intr->controller_state)) { + } else if (intr_state->controller->intr_pending(intr_state->controller_state)) { + PrintDebug("[get_intr_type] External_irq\n"); return EXTERNAL_IRQ; } - + PrintDebug("[get_intr_type] Invalid_Intr\n"); return INVALID_INTR; } -int hook_irq(struct guest_info * info, int irq) { - extern struct vmm_os_hooks * os_hooks; - return os_hooks->hook_interrupt(info, irq); + + + + +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) { + 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) { + PrintDebug("[injecting_intr] External_Irq with intr_num = %x\n", intr_num); + return intr_state->controller->begin_irq(intr_state->controller_state, intr_num); + } + + return 0; }