X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fgeneric.c;h=8fd525cf4e1e83758702c0b095cc80e05e96558b;hb=e1736715107efcc3afbdd93347bd8a7d86d995b9;hp=508128e7e562cbbdab7c86b3cd97b90007bae8ec;hpb=1610994b51177352af2e8f7c326d968d8974632a;p=palacios.git diff --git a/palacios/src/devices/generic.c b/palacios/src/devices/generic.c index 508128e..8fd525c 100644 --- a/palacios/src/devices/generic.c +++ b/palacios/src/devices/generic.c @@ -1,282 +1,768 @@ -#include -#include +/* + * 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 +#include +#include +#ifdef V3_CONFIG_HOST_DEVICE +#include +#endif +#ifndef V3_CONFIG_DEBUG_GENERIC +#undef PrintDebug +#define PrintDebug(fmt, args...) +#endif -#define GENERIC_DEBUG 1 +#define MAX_NAME 32 +#define MAX_MEM_HOOKS 16 -#if GENERIC_DEBUG -#define GENERIC_DEBUG_PRINT(first, rest...) do { SerialPrint(first, ## rest ); } while (0) -#else -#define GENERIC_DEBUG_PRINT(first, rest...) +typedef enum {GENERIC_IGNORE, + GENERIC_PASSTHROUGH, + GENERIC_PRINT_AND_PASSTHROUGH, + GENERIC_PRINT_AND_IGNORE} generic_mode_t; + +struct generic_internal { + enum {GENERIC_PHYSICAL, GENERIC_HOST} forward_type; +#ifdef V3_CONFIG_HOST_DEVICE + v3_host_dev_t host_dev; #endif + struct vm_device *dev; // me + char name[MAX_NAME]; + + uint32_t num_mem_hooks; + addr_t mem_hook[MAX_MEM_HOOKS]; +}; -#define PORT_HOOKS 1 -#define MEM_HOOKS 0 // not yet implmented in device model -#define IRQ_HOOKS 0 // not yet implemented in device model -extern struct vmm_os_hooks *os_hooks; -extern void SerialPrint(const char *format, ...); +static int generic_write_port_passthrough(struct guest_info * core, + uint16_t port, + void * src, + uint_t length, + void * priv_data) +{ + struct generic_internal *state = (struct generic_internal *) priv_data; + uint_t i; + + switch (state->forward_type) { + case GENERIC_PHYSICAL: + 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]); + } + break; + } + return length; + break; +#ifdef V3_CONFIG_HOST_DEVICE + case GENERIC_HOST: + if (state->host_dev) { + return v3_host_dev_write_io(state->host_dev,port,src,length); + } else { + return -1; + } + break; +#endif + default: + PrintError("generic (%s): unknown forwarding type\n", state->name); + return -1; + break; + } +} +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; -struct generic_internal { - generic_port_range_type *port_ranges; - uint_t num_port_ranges; - generic_address_range_type *address_ranges; - uint_t num_address_ranges; - generic_irq_range_type *irq_ranges; - uint_t num_irq_ranges; -}; +#ifdef V3_CONFIG_DEBUG_GENERIC + struct generic_internal *state = (struct generic_internal *) priv_data; +#endif + PrintDebug("generic (%s): writing 0x%x bytes to port 0x%x using %s ...", state->name, + length, port, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); - - + PrintDebug("generic (%s): writing 0x", state->name); + for (i = 0; i < length; 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; +} -int generic_reset_device(struct vm_device * dev) +static int generic_read_port_passthrough(struct guest_info * core, + uint16_t port, + void * dst, + uint_t length, + void * priv_data) { - GENERIC_DEBUG_PRINT("generic: reset device\n"); - - return 0; + struct generic_internal *state = (struct generic_internal *) priv_data; + + uint_t i; + + switch (state->forward_type) { + case GENERIC_PHYSICAL: + switch (length) { + case 1: + ((uint8_t *)dst)[0] = v3_inb(port); + break; + case 2: + ((uint16_t *)dst)[0] = v3_inw(port); + break; + case 4: + ((uint32_t *)dst)[0] = v3_indw(port); + break; + default: + for (i = 0; i < length; i++) { + ((uint8_t *)dst)[i] = v3_inb(port); + } + } + return length; + break; +#ifdef V3_CONFIG_HOST_DEVICE + case GENERIC_HOST: + if (state->host_dev) { + return v3_host_dev_read_io(state->host_dev,port,dst,length); + } + break; +#endif + default: + PrintError("generic (%s): unknown forwarding type\n", state->name); + return -1; + break; + } + return -1; } +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; +#ifdef V3_CONFIG_DEBUG_GENERIC + struct generic_internal *state = (struct generic_internal *) priv_data; +#endif + PrintDebug("generic (%s): reading 0x%x bytes from port 0x%x using %s ...", state->name, length, port, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); -int generic_start_device(struct vm_device *dev) -{ - GENERIC_DEBUG_PRINT("generic: start device\n"); - return 0; -} + rc=generic_read_port_passthrough(core,port,src,length,priv_data); + PrintDebug(" done ... read 0x"); -int generic_stop_device(struct vm_device *dev) -{ - GENERIC_DEBUG_PRINT("generic: stop device\n"); - return 0; + for (i = 0; i < rc; i++) { + PrintDebug("%x", ((uint8_t *)src)[i]); + } + + PrintDebug("\n"); + + return rc; } +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); -int generic_write_port(ushort_t port, - void * src, - uint_t length, - struct vm_device * dev) -{ - uint_t i; - - GENERIC_DEBUG_PRINT("generic: writing 0x"); - for (i=0;iname, length, port, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); -int generic_interrupt(uint_t irq, - struct vm_device * dev) -{ - PrintDebug("generic: interrupt 0x%x - injecting into VM\n",irq); + memset((uint8_t *)src, 0, length); + PrintDebug(" ignored (return zeroed buffer)\n"); - dev->vm->vm_ops.raise_irq(dev->vm,irq); + return length; +} - return 0; +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; -int generic_init_device(struct vm_device * dev) -{ - struct generic_internal *state = (struct generic_internal *) dev->private_data; - uint_t i,j; +#ifdef V3_CONFIG_DEBUG_GENERIC + struct generic_internal *state = (struct generic_internal *) priv_data; +#endif - GENERIC_DEBUG_PRINT("generic: init_device\n"); + PrintDebug("generic (%s): writing 0x%x bytes to port 0x%x using %s ", state->name, length, port, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + memset((uint8_t *)src, 0, length); + PrintDebug(" ignored - data was: 0x"); - // Would read state here + for (i = 0; i < length; i++) { + PrintDebug("%x", ((uint8_t *)src)[i]); + } + + PrintDebug("\n"); + + return length; +} - generic_reset_device(dev); - for (i=0;inum_port_ranges;i++) { - GENERIC_DEBUG_PRINT("generic: hooking ports 0x%x to 0x%x\n",state->port_ranges[i][0],state->port_ranges[i][1]); -#if PORT_HOOKS - for (j=state->port_ranges[i][0]; j<=state->port_ranges[i][1];j++) { - if (dev_hook_io(dev, j, &generic_read_port, &generic_write_port)) { - GENERIC_DEBUG_PRINT("generic: can't hook port 0x%x (already hooked?)\n",j); - } + +static int generic_write_mem_passthrough(struct guest_info * core, + addr_t gpa, + void * src, + uint_t len, + void * priv) +{ + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; + + switch (state->forward_type) { + case GENERIC_PHYSICAL: + memcpy(V3_VAddr((void*)gpa),src,len); + return len; + break; +#ifdef V3_CONFIG_HOST_DEVICE + case GENERIC_HOST: + if (state->host_dev) { + return v3_host_dev_write_mem(state->host_dev,gpa,src,len); + } else { + return -1; + } + break; +#endif + default: + PrintError("generic (%s): unknown forwarding type\n", state->name); + return -1; + break; } -#else - GENERIC_DEBUG_PRINT("generic: hooking ports not supported\n"); +} + +static int generic_write_mem_print_and_passthrough(struct guest_info * core, + addr_t gpa, + void * src, + uint_t len, + void * priv) +{ +#ifdef V3_CONFIG_DEBUG_GENERIC + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; #endif - } + PrintDebug("generic (%s): writing %u bytes to GPA 0x%p via %s ... ", state->name, + len,(void*)gpa, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + int rc = generic_write_mem_passthrough(core,gpa,src,len,priv); - for (i=0;inum_address_ranges;i++) { - GENERIC_DEBUG_PRINT("generic: hooking addresses 0x%x to 0x%x\n",state->address_ranges[i][0],state->address_ranges[i][1]); -#if MEM_HOOKS - if (dev_hook_mem(dev, state->address_ranges[i][0],state->address_ranges[i][1])) { - GENERIC_DEBUG_PRINT("generic: Can't hook addresses 0x%x to 0x%x (already hooked?)\n", - state->address_ranges[i][0],state->address_ranges[i][1]); - } -#else - GENERIC_DEBUG_PRINT("generic: hooking addresses not supported\n"); + PrintDebug("done\n"); + + return rc; +} + +static int generic_write_mem_ignore(struct guest_info * core, + addr_t gpa, + void * src, + uint_t len, + void * priv) +{ + return len; +} + +static int generic_write_mem_print_and_ignore(struct guest_info * core, + addr_t gpa, + void * src, + uint_t len, + void * priv) +{ +#ifdef V3_CONFIG_DEBUG_GENERIC + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; #endif - } + PrintDebug("generic (%s): ignoring write of %u bytes to GPA 0x%p via %s", state->name, + len,(void*)gpa, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + return len; +} - for (i=0;inum_irq_ranges;i++) { - GENERIC_DEBUG_PRINT("generic: hooking irqs 0x%x to 0x%x\n",state->irq_ranges[i][0],state->irq_ranges[i][1]); -#if IRQ_HOOKS - for (j=state->irq_ranges[i][0]; j<=state->irq_ranges[i][1];j++) { - if (dev_hook_irq(dev, j, &generic_interrupt)) { - GENERIC_DEBUG_PRINT("generic: can't hook irq 0x%x (already hooked?)\n",j); - } +static int generic_read_mem_passthrough(struct guest_info * core, + addr_t gpa, + void * dst, + uint_t len, + void * priv) +{ + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; + + switch (state->forward_type) { + case GENERIC_PHYSICAL: + memcpy(dst,V3_VAddr((void*)gpa),len); + return len; + break; +#ifdef V3_CONFIG_HOST_DEVICE + case GENERIC_HOST: + if (state->host_dev) { + return v3_host_dev_read_mem(state->host_dev,gpa,dst,len); + } else { + return -1; + } + break; +#endif + default: + PrintError("generic (%s): unknown forwarding type\n", state->name); + break; } -#else - GENERIC_DEBUG_PRINT("generic: hooking irqs not supported\n"); + + return -1; +} + +static int generic_read_mem_print_and_passthrough(struct guest_info * core, + addr_t gpa, + void * dst, + uint_t len, + void * priv) +{ +#ifdef V3_CONFIG_DEBUG_GENERIC + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; #endif - } - return 0; + PrintDebug("generic (%s): attempting to read %u bytes from GPA 0x%p via %s ... ", state->name, + len,(void*)gpa, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + int rc = generic_read_mem_passthrough(core,gpa,dst,len,priv); + + PrintDebug("done - read %d bytes\n", rc); + + return rc; } -int generic_deinit_device(struct vm_device *dev) +static int generic_read_mem_ignore(struct guest_info * core, + addr_t gpa, + void * dst, + uint_t len, + void * priv) { - struct generic_internal *state = (struct generic_internal *) dev->private_data; - uint_t i,j; - - GENERIC_DEBUG_PRINT("generic: deinit_device\n"); - - for (i=0;inum_irq_ranges;i++) { - GENERIC_DEBUG_PRINT("generic: unhooking irqs 0x%x to 0x%x\n",state->irq_ranges[i][0],state->irq_ranges[i][1]); -#if IRQ_HOOKS - for (j=state->irq_ranges[i][0]; j<=state->irq_ranges[i][1];j++) { - if (dev_unhook_irq(dev, j)) { - GENERIC_DEBUG_PRINT("generic: can't unhook irq 0x%x (already unhooked?)\n",j); - } - } -#else - GENERIC_DEBUG_PRINT("generic: unhooking irqs not supported\n"); +#ifdef V3_CONFIG_DEBUG_GENERIC + struct vm_device *dev = (struct vm_device *) priv; + struct generic_internal *state = (struct generic_internal *) dev->private_data; #endif - } + PrintDebug("generic (%s): ignoring attempt to read %u bytes from GPA 0x%p via %s ... ", state->name, + len,(void*)gpa, + state->forward_type == GENERIC_PHYSICAL ? "physical" : + state->forward_type == GENERIC_HOST ? "host" : "UNKNOWN"); + + memset((uint8_t *)dst, 0, len); + + PrintDebug("returning zeros\n"); + + return len; +} + + +static int generic_read_mem_print_and_ignore(struct guest_info * core, + addr_t gpa, + void * dst, + uint_t len, + void * priv) +{ + memset((uint8_t *)dst, 0, len); + return len; +} + - for (i=0;inum_address_ranges;i++) { - GENERIC_DEBUG_PRINT("generic: unhooking addresses 0x%x to 0x%x\n",state->address_ranges[i][0],state->address_ranges[i][1]); -#if MEM_HOOKS - if (dev_unhook_mem(dev, state->address_ranges[i][0],state->address_ranges[i][1])) { - GENERIC_DEBUG_PRINT("generic: Can't unhook addresses 0x%x to 0x%x (already unhooked?)\n", - state->address_ranges[i][0],state->address_ranges[i][1]); +static int generic_free(struct generic_internal * state) { + int i; + + PrintDebug("generic (%s): deinit_device\n", state->name); + +#ifdef V3_CONFIG_HOST_DEVICE + if (state->host_dev) { + v3_host_dev_close(state->host_dev); + state->host_dev=0; } -#else - GENERIC_DEBUG_PRINT("generic: unhooking addresses not supported\n"); #endif - } - - for (i=0;inum_port_ranges;i++) { - GENERIC_DEBUG_PRINT("generic: unhooking ports 0x%x to 0x%x\n",state->port_ranges[i][0],state->port_ranges[i][1]); -#if PORT_HOOKS - for (j=state->port_ranges[i][0]; j<=state->port_ranges[i][1];j++) { - if (dev_unhook_io(dev, j)) { - GENERIC_DEBUG_PRINT("generic: can't unhook port 0x%x (already unhooked?)\n",j); - } + + // Note that the device manager handles unhooking the I/O ports + // We need to handle unhooking memory regions + for (i=0;inum_mem_hooks;i++) { + if (v3_unhook_mem(state->dev->vm,V3_MEM_CORE_ANY,state->mem_hook[i])<0) { + PrintError("generic (%s): unable to unhook memory starting at 0x%p\n", state->name,(void*)(state->mem_hook[i])); + return -1; + } } -#else - GENERIC_DEBUG_PRINT("generic: unhooking ports not supported\n"); -#endif + + V3_Free(state); + return 0; +} + + + + + +static struct v3_device_ops dev_ops = { + .free = (int (*)(void *))generic_free, +}; + + + + +static int add_port_range(struct vm_device * dev, uint_t start, uint_t end, generic_mode_t mode) { + uint_t i = 0; + + struct generic_internal *state = (struct generic_internal *) dev->private_data; + + PrintDebug("generic (%s): adding port range 0x%x to 0x%x as %s\n", state->name, + start, end, + (mode == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : + (mode == GENERIC_PRINT_AND_IGNORE) ? "print-and-ignore" : + (mode == GENERIC_PASSTHROUGH) ? "passthrough" : + (mode == GENERIC_IGNORE) ? "ignore" : "UNKNOWN"); + + for (i = start; i <= end; i++) { + switch (mode) { + case 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 (%s): can't hook port 0x%x (already hooked?)\n", state->name, i); + return -1; + } + break; + + case 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 (%s): can't hook port 0x%x (already hooked?)\n", state->name, i); + return -1; + } + break; + case GENERIC_PASSTHROUGH: + if (v3_dev_hook_io(dev, i, + &generic_read_port_passthrough, + &generic_write_port_passthrough) == -1) { + PrintError("generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i); + return -1; + } + break; + case GENERIC_IGNORE: + if (v3_dev_hook_io(dev, i, + &generic_read_port_ignore, + &generic_write_port_ignore) == -1) { + PrintError("generic (%s): can't hook port 0x%x (already hooked?)\n", state->name, i); + return -1; + } + break; + default: + PrintError("generic (%s): huh?\n", state->name); + break; + } + } + + return 0; +} - } - generic_reset_device(dev); - return 0; +static int add_mem_range(struct vm_device * dev, addr_t start, addr_t end, generic_mode_t mode) { + + struct generic_internal *state = (struct generic_internal *) dev->private_data; + + PrintDebug("generic (%s): adding memory range 0x%p to 0x%p as %s\n", state->name, + (void*)start, (void*)end, + (mode == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : + (mode == GENERIC_PRINT_AND_IGNORE) ? "print-and-ignore" : + (mode == GENERIC_PASSTHROUGH) ? "passthrough" : + (mode == GENERIC_IGNORE) ? "ignore" : "UNKNOWN"); + + switch (mode) { + case GENERIC_PRINT_AND_PASSTHROUGH: + if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1, + &generic_read_mem_print_and_passthrough, + &generic_write_mem_print_and_passthrough, dev) == -1) { + PrintError("generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end); + return -1; + } + break; + + case GENERIC_PRINT_AND_IGNORE: + if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1, + &generic_read_mem_print_and_ignore, + &generic_write_mem_print_and_ignore, dev) == -1) { + PrintError("generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end); + return -1; + } + break; + + case GENERIC_PASSTHROUGH: + if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1, + &generic_read_mem_passthrough, + &generic_write_mem_passthrough, dev) == -1) { + PrintError("generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end); + return -1; + } + break; + + case GENERIC_IGNORE: + if (v3_hook_full_mem(dev->vm, V3_MEM_CORE_ANY, start, end+1, + &generic_read_mem_ignore, + &generic_write_mem_ignore, dev) == -1) { + PrintError("generic (%s): can't hook memory region 0x%p to 0x%p\n", state->name,(void*)start,(void*)end); + return -1; + } + break; + default: + PrintError("generic (%s): huh?\n",state->name); + break; + } + + return 0; } +/* + The device can be used to forward to the underlying physical device + or to a host device that has a given url. Both memory and ports can be forwarded as + GENERIC_PASSTHROUGH => send writes and reads to physical device or host + GENERIC_PRINT_AND_PASSTHROUGH => also print what it's doing -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, -}; + GENERIC_IGNORE => ignore writes and reads + GENERIC_PRINT_AND_PASSTHROUGH => also print what it's doing + The purpose of the "PRINT" variants is to make it easy to spy on + device interactions (although you will not see DMA or interrupts) -struct vm_device *create_generic(generic_port_range_type port_ranges[], - uint_t num_port_ranges, - generic_address_range_type address_ranges[], - uint_t num_address_ranges, - generic_irq_range_type irq_ranges[], - uint_t num_irq_ranges) -{ - struct generic_internal * generic_state = os_hooks->malloc(sizeof(struct generic_internal)); - - - generic_state->num_port_ranges=num_port_ranges; - if (num_port_ranges>0) { - generic_state->port_ranges = os_hooks->malloc(sizeof(generic_address_range_type)*num_port_ranges); - memcpy(generic_state->port_ranges,port_ranges,sizeof(generic_port_range_type)*num_port_ranges); - } else { - generic_state->port_ranges=NULL; - } - - generic_state->num_address_ranges=num_address_ranges; - if (num_address_ranges>0) { - generic_state->address_ranges = os_hooks->malloc(sizeof(generic_address_range_type)*num_address_ranges); - memcpy(generic_state->address_ranges,address_ranges,sizeof(generic_address_range_type)*num_address_ranges); - } else { - generic_state->address_ranges=NULL; - } - generic_state->num_irq_ranges=num_irq_ranges; - if (num_irq_ranges>0) { - generic_state->irq_ranges = os_hooks->malloc(sizeof(generic_address_range_type)*num_irq_ranges); - memcpy(generic_state->irq_ranges,irq_ranges,sizeof(generic_irq_range_type)*num_port_ranges); - } else { - generic_state->irq_ranges=NULL; - } - - - struct vm_device *device = create_device("GENERIC", &dev_ops, generic_state); - - return device; + + + (empty implies physical_dev) + + + portno1 + portno2 => portno1 through portno2 (inclusive) + PRINT_AND_PASSTHROUGH (as above) + + + + gpa1 + gpa2 => memory addreses gpa1 through gpa2 (inclusive); page granularity + ... as above + + +*/ + +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"); + char * forward = v3_cfg_val(cfg, "forward"); +#ifdef V3_CONFIG_HOST_DEVICE + char * host_dev = v3_cfg_val(cfg, "hostdev"); +#endif + v3_cfg_tree_t * port_cfg = v3_cfg_subtree(cfg, "ports"); + v3_cfg_tree_t * mem_cfg = v3_cfg_subtree(cfg, "memory"); + + + state = (struct generic_internal *)V3_Malloc(sizeof(struct generic_internal)); + + if (state == NULL) { + PrintError("generic (%s): could not allocate generic state\n",dev_id); + return -1; + } + + memset(state, 0, sizeof(struct generic_internal)); + strncpy(state->name,dev_id,MAX_NAME); + + if (!forward) { + state->forward_type=GENERIC_PHYSICAL; + } else { + if (!strcasecmp(forward,"physical_device")) { + state->forward_type=GENERIC_PHYSICAL; + } else if (!strcasecmp(forward,"host_device")) { +#ifdef V3_CONFIG_HOST_DEVICE + state->forward_type=GENERIC_HOST; +#else + PrintError("generic (%s): cannot configure host device since host device support is not built in\n", state->name); + V3_Free(state); + return -1; +#endif + } else { + PrintError("generic (%s): unknown forwarding type \"%s\"\n", state->name, forward); + V3_Free(state); + return -1; + } + } + + struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, state); + + if (dev == NULL) { + PrintError("generic: could not attach device %s\n", state->name); + V3_Free(state); + return -1; + } + + state->dev=dev; + + +#ifdef V3_CONFIG_HOST_DEVICE + if (state->forward_type==GENERIC_HOST) { + if (!host_dev) { + PrintError("generic (%s): host forwarding requested, but no host device given\n", state->name); + v3_remove_device(dev); + return -1; + } else { + state->host_dev = v3_host_dev_open(host_dev,V3_BUS_CLASS_DIRECT,dev,vm); + if (!(state->host_dev)) { + PrintError("generic (%s): unable to open host device \"%s\"\n", state->name,host_dev); + v3_remove_device(dev); + return -1; + } else { + PrintDebug("generic (%s): successfully attached host device \"%s\"\n", state->name,host_dev); + } + } + } +#endif + + PrintDebug("generic (%s): init_device\n", state->name); + + // 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("generic (%s): invalid mode %s in adding ports\n", state->name, mode_str); + v3_remove_device(dev); + return -1; + } + + + if (add_port_range(dev, start, end, mode) == -1) { + PrintError("generic (%s): could not add port range 0x%x to 0x%x\n", state->name, start, end); + v3_remove_device(dev); + return -1; + } + + port_cfg = v3_cfg_next_branch(port_cfg); + } + + // scan memory list.... + while (mem_cfg) { + addr_t start = atox(v3_cfg_val(mem_cfg, "start")); + addr_t end = atox(v3_cfg_val(mem_cfg, "end")); + char * mode_str = v3_cfg_val(mem_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("generic (%s): invalid mode %s for adding memory\n", state->name, mode_str); + v3_remove_device(dev); + return -1; + } + + if (state->num_mem_hooks>=MAX_MEM_HOOKS) { + PrintError("generic (%s): cannot add another memory hook (increase MAX_MEM_HOOKS)\n", state->name); + v3_remove_device(dev); + return -1; + } + + if (add_mem_range(dev, start, end, mode) == -1) { + PrintError("generic (%s): could not add memory range 0x%p to 0x%p\n", state->name, (void*)start, (void*)end); + v3_remove_device(dev); + return -1; + } + + state->mem_hook[state->num_mem_hooks] = start; + state->num_mem_hooks++; + + mem_cfg = v3_cfg_next_branch(port_cfg); + } + + PrintDebug("generic (%s): initialization complete\n", state->name); + + return 0; } + +device_register("GENERIC", generic_init)