X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fgeneric.c;fp=palacios%2Fsrc%2Fdevices%2Fgeneric.c;h=130c7081d66be8184e194201af201eedfcae23d3;hp=0000000000000000000000000000000000000000;hb=ddc16b0737cf58f7aa90a69c6652cdf4090aec51;hpb=626595465a2c6987606a6bc697df65130ad8c2d3 diff --git a/palacios/src/devices/generic.c b/palacios/src/devices/generic.c new file mode 100644 index 0000000..130c708 --- /dev/null +++ b/palacios/src/devices/generic.c @@ -0,0 +1,478 @@ +/* + * 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 + * Copyright (c) 2008, The V3VEE Project + * All rights reserved. + * + * Author: Peter Dinda + * Contributor: 2008, 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 +#include + + + +#ifndef DEBUG_GENERIC +#undef PrintDebug +#define PrintDebug(fmt, args...) +#endif + + +#define PORT_HOOKS 1 +#define MEM_HOOKS 0 // not yet implmented in device model +#define IRQ_HOOKS 0 // not yet implemented in device model + + +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; +}; + +struct mem_range { + void * start; + void * end; + uint_t type; + struct list_head range_link; +}; + +struct irq_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_stop_device(struct vm_device * dev) { + PrintDebug("generic: stop device\n"); + return 0; +} + + + + +static int generic_write_port_passthrough(ushort_t port, + void * src, + uint_t length, + struct vm_device * dev) { + uint_t i; + + PrintDebug("generic: writing 0x"); + + 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]); + } + } //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) { + uint_t i; + + 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 + + PrintDebug(" done ... read 0x"); + + for (i = 0; i < length; i++) { + PrintDebug("%x", ((uchar_t*)src)[i]); + } + + PrintDebug("\n"); + + return length; +} + +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"); + + 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) { + + PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port); + + memset((char*)src, 0, length); + PrintDebug(" ignored (return zeroed buffer)\n"); + + return length; +} + + + +static int generic_interrupt(uint_t irq, struct vm_device * dev) { + PrintDebug("generic: interrupt 0x%x - injecting into VM\n", irq); + + v3_raise_irq(dev->vm, irq); + + return 0; +} + + +static 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 (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); + } + } + } + + } + } else { + PrintDebug("generic: hooking ports not supported\n"); + } + + + + if (MEM_HOOKS) { // This is a runtime conditional on a #define + struct mem_range * tmp; + + list_for_each_entry(tmp, &(state->mem_list), range_link) { + + PrintDebug("generic: hooking addresses 0x%x to 0x%x\n", + tmp->start, tmp->end); + + + if (v3_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"); + } + + + + + if (IRQ_HOOKS) { // This is a runtime conditional on a #define + struct irq_range * tmp; + + 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 (v3_dev_hook_irq(dev, i, &generic_interrupt)) { + PrintDebug("generic: can't hook irq 0x%x (already hooked?)\n", i); + } + } + + } + } else { + PrintDebug("generic: hooking irqs not supported\n"); + } + + + + return 0; +} + +static int generic_deinit_device(struct vm_device * dev) { + struct generic_internal * state = (struct generic_internal *)(dev->private_data); + + + 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; + + PrintDebug("generic: unhooking irqs 0x%x to 0x%x\n", + cur->start, cur->end); + + + for (i = cur->start; i <= cur->end; i++) { + if (v3_dev_unhook_irq(dev, i)) { + PrintDebug("generic: can't unhook irq 0x%x (already unhooked?)\n", i); + } + } + + list_del(&(cur->range_link)); + state->num_irq_ranges--; + V3_Free(cur); + } + } else { + PrintDebug("generic: unhooking irqs not supported\n"); + } + + + if (MEM_HOOKS) { + struct mem_range * tmp; + struct mem_range * cur; + + list_for_each_entry_safe(cur, tmp, &(state->mem_list), range_link) { + + PrintDebug("generic: unhooking addresses 0x%x to 0x%x\n", + cur->start, cur->end); + + if (v3_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); + } + + list_del(&(cur->range_link)); + state->num_mem_ranges--; + V3_Free(cur); + } + } else { + PrintDebug("generic: unhooking addresses not supported\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); + } + } + + 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 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, +}; + + + + +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); + + 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; +} + +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); + + struct mem_range * range = (struct mem_range *)V3_Malloc(sizeof(struct mem_range)); + range->start = start; + range->end = end; + range->type = type; + + list_add(&(range->range_link), &(state->port_list)); + state->num_mem_ranges++; + } else { + PrintDebug("generic: hooking memory not supported\n"); + return -1; + } + + return 0; +} + + +int v3_generic_add_irq_range(struct vm_device * dev, uint_t start, uint_t end, uint_t type) { + + 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; + } + + return 0; +} + + + +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; + generic_state->num_mem_ranges = 0; + generic_state->num_irq_ranges = 0; + + INIT_LIST_HEAD(&(generic_state->port_list)); + INIT_LIST_HEAD(&(generic_state->mem_list)); + INIT_LIST_HEAD(&(generic_state->irq_list)); + + struct vm_device * device = v3_create_device("GENERIC", &dev_ops, generic_state); + + return device; +}