+++ /dev/null
-/*
- * 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 <jarusl@cs.northwestern.edu>
- * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
- * All rights reserved.
- *
- * Author: Jack Lange <jarusl@cs.northwestern.edu>
- *
- * This is free software. You are permitted to use,
- * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
- */
-
-#include <palacios/vmm.h>
-#include <devices/ram_hd.h>
-#include <devices/ide.h>
-
-
-
-#ifndef CONFIG_DEBUG_IDE
-#undef PrintDebug
-#define PrintDebug(fmt, args...)
-#endif
-
-struct hd_state {
- addr_t disk_image;
- uint32_t capacity; // in bytes
-
- struct vm_device * ide;
-
- uint_t bus;
- uint_t drive;
-};
-
-
-// HDs always read 512 byte blocks... ?
-static int hd_read(uint8_t * buf, int sector_count, uint64_t lba, void * private_data) {
- struct vm_device * hd_dev = (struct vm_device *)private_data;
- struct hd_state * hd = (struct hd_state *)(hd_dev->private_data);
- int offset = lba * HD_SECTOR_SIZE;
- int length = sector_count * HD_SECTOR_SIZE;
-
- // PrintDebug("Reading RAM HD at (LBA=%d) offset %d (length=%d)\n", (uint32_t)lba, offset, length);
-
- memcpy(buf, (uint8_t *)(hd->disk_image + offset), length);
-
- return 0;
-}
-
-
-static int hd_write(uint8_t * buf, int sector_count, uint64_t lba, void * private_data) {
- struct vm_device * hd_dev = (struct vm_device *)private_data;
- struct hd_state * hd = (struct hd_state *)(hd_dev->private_data);
- int offset = lba * HD_SECTOR_SIZE;
- int length = sector_count * HD_SECTOR_SIZE;
-
- memcpy((uint8_t *)(hd->disk_image + offset), buf, length);
-
- return 0;
-}
-
-
-static uint64_t hd_get_capacity(void * private_data) {
- struct vm_device * hd_dev = (struct vm_device *)private_data;
- struct hd_state * hd = (struct hd_state *)(hd_dev->private_data);
- PrintDebug("Querying RAM HD capacity (bytes=%d) (ret = %d)\n",
- hd->capacity, hd->capacity / HD_SECTOR_SIZE);
- return hd->capacity / HD_SECTOR_SIZE;
-}
-
-static struct v3_hd_ops hd_ops = {
- .read = hd_read,
- .write = hd_write,
- .get_capacity = hd_get_capacity,
-};
-
-
-
-
-static int hd_free(struct vm_device * dev) {
- return 0;
-}
-
-static struct v3_device_ops dev_ops = {
- .free = hd_free,
- .reset = NULL,
- .start = NULL,
- .stop = NULL,
-};
-
-
-
-
-static int hd_init(struct guest_info * vm, void * cfg_data) {
- struct hd_state * hd = NULL;
- struct ram_hd_cfg * cfg = (struct ram_hd_cfg *)cfg_data;
-
- if (cfg->size % HD_SECTOR_SIZE) {
- PrintError("HD image must be an integral of sector size (HD_SECTOR_SIZE=%d)\n", HD_SECTOR_SIZE);
- return -1;
- }
-
- hd = (struct hd_state *)V3_Malloc(sizeof(struct hd_state));
-
- PrintDebug("Registering Ram HDD at %p (size=%d)\n", (void *)cfg->ramdisk, cfg->size);
-
- hd->disk_image = cfg->ramdisk;
- hd->capacity = cfg->size;
-
- hd->ide = v3_find_dev(vm, cfg->ide);
-
- if (hd->ide == 0) {
- PrintError("Could not find backend %s\n", cfg->ide);
- return -1;
- }
-
- hd->bus = cfg->bus;
- hd->drive = cfg->drive;
-
- struct vm_device * dev = v3_allocate_device("RAM-HD", &dev_ops, hd);
-
- if (v3_attach_device(vm, dev) == -1) {
- PrintError("Could not attach device %s\n", "RAM-HD");
- return -1;
- }
-
-
- if (v3_ide_register_harddisk(hd->ide, hd->bus, hd->drive, "RAM-HD", &hd_ops, dev) == -1) {
- return -1;
- }
-
- return 0;
-}
-
-
-device_register("RAM-HD", hd_init)
