X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Fgeneric.c;h=b7d1a181001368de960bf16ee7e17a680bb2341a;hb=0a7690f54cb5bda83780dac26ce433ad24b1d766;hp=269840e1e5529b39d72dfe84a5001fab99626133;hpb=028d9b71d4a4e6d49a22ad5904b6dd2f8c596a26;p=palacios.git diff --git a/palacios/src/devices/generic.c b/palacios/src/devices/generic.c index 269840e..b7d1a18 100644 --- a/palacios/src/devices/generic.c +++ b/palacios/src/devices/generic.c @@ -1,282 +1,302 @@ -#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 - - -#define GENERIC_DEBUG 1 - -#if GENERIC_DEBUG -#define GENERIC_DEBUG_PRINT(first, rest...) do { SerialPrint(first, ## rest ); } while (0) -#else -#define GENERIC_DEBUG_PRINT(first, rest...) +#ifndef CONFIG_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 - -extern struct vmm_os_hooks *os_hooks; - -extern void SerialPrint(const char *format, ...); - - +typedef enum {GENERIC_IGNORE, + GENERIC_PASSTHROUGH, + GENERIC_PRINT_AND_PASSTHROUGH, + GENERIC_PRINT_AND_IGNORE} generic_mode_t; 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; }; - - - +static int generic_write_port_passthrough(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + uint_t i; -int generic_reset_device(struct vm_device * dev) -{ - GENERIC_DEBUG_PRINT("generic: reset device\n"); - - return 0; + 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]); + } + } + return length; } +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; + PrintDebug("generic: writing 0x"); + 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); -int generic_start_device(struct vm_device *dev) -{ - GENERIC_DEBUG_PRINT("generic: start device\n"); - return 0; + PrintDebug(" done\n"); + + return rc; } +static int generic_read_port_passthrough(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + uint_t i; + + switch (length) { + case 1: + ((uint8_t *)src)[0] = v3_inb(port); + break; + case 2: + ((uint16_t *)src)[0] = v3_inw(port); + break; + case 4: + ((uint32_t *)src)[0] = v3_indw(port); + break; + default: + for (i = 0; i < length; i++) { + ((uint8_t *)src)[i] = v3_inb(port); + } + } -int generic_stop_device(struct vm_device *dev) -{ - GENERIC_DEBUG_PRINT("generic: stop device\n"); - return 0; + return length; } +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; + + PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port); + rc=generic_read_port_passthrough(core,port,src,length,priv_data); -int generic_write_port(ushort_t port, - void * src, - uint_t length, - struct vm_device * dev) -{ - uint_t i; + PrintDebug(" done ... read 0x"); - GENERIC_DEBUG_PRINT("generic: writing 0x"); - for (i=0;ivm->vm_ops.raise_irq(dev->vm,irq,0); +static int generic_read_port_print_and_ignore(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { + + PrintDebug("generic: reading 0x%x bytes from port 0x%x ...", length, port); - return 0; + memset((uint8_t *)src, 0, length); + PrintDebug(" ignored (return zeroed buffer)\n"); + return length; } +static int generic_write_port_ignore(struct guest_info * core, uint16_t port, void * src, + uint_t length, void * priv_data) { -int generic_init_device(struct vm_device * dev) -{ - struct generic_internal *state = (struct generic_internal *) dev->private_data; - uint_t i,j; + return length; +} - GENERIC_DEBUG_PRINT("generic: init_device\n"); +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; - // Would read state here + PrintDebug("generic: writing 0x%x bytes to port 0x%x ", length, port); - generic_reset_device(dev); + memset((uint8_t *)src, 0, length); + PrintDebug(" ignored - data was: 0x"); - 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); - } + for (i = 0; i < length; i++) { + PrintDebug("%x", ((uint8_t *)src)[i]); } -#else - GENERIC_DEBUG_PRINT("generic: hooking ports not supported\n"); -#endif + + PrintDebug("\n"); - } + return length; +} - 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"); -#endif - } - 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); - } - } -#else - GENERIC_DEBUG_PRINT("generic: hooking irqs not supported\n"); -#endif - } - return 0; +static int generic_free(struct generic_internal * state) { + PrintDebug("generic: deinit_device\n"); + + V3_Free(state); + return 0; } -int generic_deinit_device(struct vm_device *dev) -{ - 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"); -#endif - } - 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]); - } -#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); - } - } -#else - GENERIC_DEBUG_PRINT("generic: unhooking ports not supported\n"); -#endif +static struct v3_device_ops dev_ops = { + .free = (int (*)(void *))generic_free, +}; - } - generic_reset_device(dev); - return 0; -} +static int add_port_range(struct vm_device * dev, uint_t start, uint_t end, generic_mode_t mode) { + uint_t i = 0; + PrintDebug("generic: Adding Port Range: 0x%x to 0x%x as %s\n", + start, end, + (mode == GENERIC_PRINT_AND_PASSTHROUGH) ? "print-and-passthrough" : "print-and-ignore"); + + for (i = start; i <= end; i++) { + if (mode == 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: can't hook port 0x%x (already hooked?)\n", i); + return -1; + } + } else if (mode == 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: can't hook port 0x%x (already hooked?)\n", i); + return -1; + } + } else if (mode == GENERIC_PASSTHROUGH) { + if (v3_dev_hook_io(dev, i, + &generic_read_port_passthrough, + &generic_write_port_passthrough) == -1) { + PrintError("generic: can't hook port 0x%x (already hooked?)\n", i); + return -1; + } + } else if (mode == GENERIC_IGNORE) { + if (v3_dev_hook_io(dev, i, + &generic_read_port_ignore, + &generic_write_port_ignore) == -1) { + PrintError("generic: can't hook port 0x%x (already hooked?)\n", i); + return -1; + } + } + } + + 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, -}; +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"); + v3_cfg_tree_t * port_cfg = v3_cfg_subtree(cfg, "ports"); -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)); + state = (struct generic_internal *)V3_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; - } + if (state == NULL) { + PrintError("Could not allocate generic state\n"); + return -1; + } + + memset(state, 0, sizeof(struct generic_internal)); + + struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, state); - 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; - } + if (dev == NULL) { + PrintError("Could not attach device %s\n", dev_id); + V3_Free(state); + return -1; + } + PrintDebug("generic: init_device\n"); + + // 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("Invalid Mode %s\n", mode_str); + v3_remove_device(dev); + return -1; + } + + if (add_port_range(dev, start, end, mode) == -1) { + PrintError("Could not add port range %d-%d\n", start, end); + v3_remove_device(dev); + return -1; + } + + port_cfg = v3_cfg_next_branch(port_cfg); + } - struct vm_device *device = create_device("GENERIC", &dev_ops, generic_state); - return device; + return 0; } + +device_register("GENERIC", generic_init)