--- /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".
+ */
+
+#ifndef __DEVICES_BLOCK_DEV_H__
+#define __DEVICES_BLOCK_DEV_H__
+
+#ifdef __V3VEE__
+
+
+
+#define ATAPI_BLOCK_SIZE 2048
+#define HD_SECTOR_SIZE 512
+
+
+struct v3_hd_ops {
+ uint64_t (*get_capacity)(void * private_data);
+ // Reads always operate on 2048 byte blocks
+ int (*read)(uint8_t * buf, int sector_count, uint64_t lba, void * private_data);
+ int (*write)(uint8_t * buf, int sector_count, uint64_t lba, void * private_data);
+};
+
+
+
+struct v3_cd_ops {
+ uint32_t (*get_capacity)(void * private_data);
+ // Reads always operate on 2048 byte blocks
+ int (*read)(uint8_t * buf, int block_count, uint64_t lba, void * private_data);
+};
+
+
+typedef enum {BLOCK_NONE, BLOCK_DISK, BLOCK_CDROM} v3_block_type_t;
+
+
+
+static const char * block_dev_type_strs[] = {"NONE", "HARDDISK", "CDROM" };
+
+static inline const char * v3_block_type_to_str(v3_block_type_t type) {
+ if (type > BLOCK_CDROM) {
+ return NULL;
+ }
+ return block_dev_type_strs[type];
+}
+
+
+
+#endif
+
+
+#endif
#ifdef __V3VEE__
+#include <devices/block_dev.h>
struct ide_cfg {
char pci[32];
};
-#define ATAPI_BLOCK_SIZE 2048
-#define IDE_SECTOR_SIZE 512
-
-typedef enum {IDE_NONE, IDE_DISK, IDE_CDROM} v3_ide_dev_type_t;
-
-struct v3_ide_cd_ops {
- uint32_t (*get_capacity)(void * private_data);
- // Reads always operate on 2048 byte blocks
- int (*read)(uint8_t * buf, int block_count, uint64_t lba, void * private_data);
-};
-
-
-struct v3_ide_hd_ops {
- uint64_t (*get_capacity)(void * private_data);
- // Reads always operate on 2048 byte blocks
- int (*read)(uint8_t * buf, int sector_count, uint64_t lba, void * private_data);
- int (*write)(uint8_t * buf, int sector_count, uint64_t lba, void * private_data);
-};
-
-
int v3_ide_register_cdrom(struct vm_device * ide,
uint_t bus_num,
uint_t drive_num,
char * drive_name,
- struct v3_ide_cd_ops * ops,
+ struct v3_cd_ops * ops,
void * private_data);
int v3_ide_register_harddisk(struct vm_device * ide,
uint_t bus_num,
uint_t drive_num,
char * drive_name,
- struct v3_ide_hd_ops * ops,
+ struct v3_hd_ops * ops,
void * private_data);
--- /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".
+ */
+
+#ifndef __DEVICES_LNX_VIRTIO_BLK_H__
+#define __DEVICES_LNX_VIRTIO_BLK_H__
+
+#ifdef __V3VEE__
+
+#include <devices/block_dev.h>
+
+int v3_virtio_register_cdrom(struct vm_device * dev,
+ struct v3_cd_ops * ops,
+ void * private_data);
+
+
+int v3_virtio_register_harddisk(struct vm_device * dev,
+ struct v3_hd_ops * ops,
+ void * private_data);
+
+
+#endif
+
+
+#endif
#define VIRTIO_STATUS_PORT 18
#define VIRTIO_ISR_PORT 19
+#define VIRTIO_PAGE_SHIFT 12
+/* Descriptor flags */
+/* This marks a buffer as continuing via the next field. */
+#define VIRTIO_NEXT_FLAG 0x1
+/* This marks a buffer as write-only (otherwise read-only). */
+#define VIRTIO_WR_ONLY_FLAG 0x2
+
+
+/* Used Flags */
+/* This means don't notify other side when buffer added. */
+#define VRING_NO_NOTIFY_FLAG 0x1
+
+
+/* Avail Flags */
+/* This means don't interrupt guest when buffer consumed. */
+#define VIRTIO_NO_IRQ_FLAG 0x1
+
/* The virtio configuration space is a hybrid io/memory mapped model
* All IO is done via IO port accesses
* The IO ports access fields in a virtio data structure, and the base io port
+struct virtio_queue {
+ uint16_t queue_size;
+
+ uint16_t cur_avail_idx;
+
+ addr_t ring_desc_addr;
+ addr_t ring_avail_addr;
+ addr_t ring_used_addr;
+
+
+ struct vring_desc * desc; // We can treat this as an array...
+ struct vring_avail * avail;
+ struct vring_used * used;
+
+ uint32_t pfn;
+};
+
#endif
// Make it the simplest drive possible (1 head, 1 cyl, 1 sect/track)
drive_id->num_cylinders = drive->num_cylinders;
drive_id->num_heads = drive->num_heads;
- drive_id->bytes_per_track = drive->num_sectors * IDE_SECTOR_SIZE;
- drive_id->bytes_per_sector = IDE_SECTOR_SIZE;
+ drive_id->bytes_per_track = drive->num_sectors * HD_SECTOR_SIZE;
+ drive_id->bytes_per_sector = HD_SECTOR_SIZE;
drive_id->sectors_per_track = drive->num_sectors;
drive->hd_ops->get_capacity(drive->private_data)) {
PrintError("IDE: request size exceeds disk capacity (lba=%d) (sect_cnt=%d) (ReadEnd=%d) (capacity=%p)\n",
lba_addr.addr, sect_cnt,
- lba_addr.addr + (sect_cnt * IDE_SECTOR_SIZE),
+ lba_addr.addr + (sect_cnt * HD_SECTOR_SIZE),
(void *)(addr_t)(drive->hd_ops->get_capacity(drive->private_data)));
return -1;
}
return -1;
}
- drive->transfer_length = sect_cnt * IDE_SECTOR_SIZE;
+ drive->transfer_length = sect_cnt * HD_SECTOR_SIZE;
drive->transfer_index = 0;
channel->status.busy = 0;
#include <devices/ide.h>
#include <devices/pci.h>
#include <devices/southbridge.h>
+#include <devices/block_dev.h>
#include "ide-types.h"
#include "atapi-types.h"
}
-static const char * ide_dev_type_strs[] = {"NONE", "HARDDISK", "CDROM" };
-
-
-static inline const char * device_type_to_str(v3_ide_dev_type_t type) {
- if (type > 2) {
- return NULL;
- }
-
- return ide_dev_type_strs[type];
-}
-
-
struct ide_cd_state {
struct atapi_sense_data sense;
struct ide_drive {
// Command Registers
- v3_ide_dev_type_t drive_type;
+ v3_block_type_t drive_type;
union {
- struct v3_ide_cd_ops * cd_ops;
- struct v3_ide_hd_ops * hd_ops;
+ struct v3_cd_ops * cd_ops;
+ struct v3_hd_ops * hd_ops;
};
PrintDebug("Resetting drive %s\n", drive->model);
- if (drive->drive_type == IDE_CDROM) {
+ if (drive->drive_type == BLOCK_CDROM) {
drive->cylinder = 0xeb14;
} else {
drive->cylinder = 0x0000;
while (prd_bytes_left > 0) {
uint_t bytes_to_write = 0;
- if (drive->drive_type == IDE_DISK) {
- bytes_to_write = (prd_bytes_left > IDE_SECTOR_SIZE) ? IDE_SECTOR_SIZE : prd_bytes_left;
+ if (drive->drive_type == BLOCK_DISK) {
+ bytes_to_write = (prd_bytes_left > HD_SECTOR_SIZE) ? HD_SECTOR_SIZE : prd_bytes_left;
if (ata_read(dev, channel, drive->data_buf, 1) == -1) {
PrintError("Failed to read next disk sector\n");
return -1;
}
- } else if (drive->drive_type == IDE_CDROM) {
+ } else if (drive->drive_type == BLOCK_CDROM) {
if (atapi_cmd_is_data_op(drive->cd_state.atapi_cmd)) {
bytes_to_write = (prd_bytes_left > ATAPI_BLOCK_SIZE) ? ATAPI_BLOCK_SIZE : prd_bytes_left;
channel->dma_tbl_index++;
- if (drive->drive_type == IDE_DISK) {
- if (drive->transfer_index % IDE_SECTOR_SIZE) {
+ if (drive->drive_type == BLOCK_DISK) {
+ if (drive->transfer_index % HD_SECTOR_SIZE) {
PrintError("We currently don't handle sectors that span PRD descriptors\n");
return -1;
}
- } else if (drive->drive_type == IDE_CDROM) {
+ } else if (drive->drive_type == BLOCK_CDROM) {
if (atapi_cmd_is_data_op(drive->cd_state.atapi_cmd)) {
if (drive->transfer_index % ATAPI_BLOCK_SIZE) {
PrintError("We currently don't handle ATAPI BLOCKS that span PRD descriptors\n");
uint_t bytes_to_write = 0;
- bytes_to_write = (prd_bytes_left > IDE_SECTOR_SIZE) ? IDE_SECTOR_SIZE : prd_bytes_left;
+ bytes_to_write = (prd_bytes_left > HD_SECTOR_SIZE) ? HD_SECTOR_SIZE : prd_bytes_left;
ret = read_guest_pa_memory(dev->vm, prd_entry.base_addr + prd_offset, bytes_to_write, drive->data_buf);
channel->dma_tbl_index++;
- if (drive->transfer_index % IDE_SECTOR_SIZE) {
+ if (drive->transfer_index % HD_SECTOR_SIZE) {
PrintError("We currently don't handle sectors that span PRD descriptors\n");
return -1;
}
switch (channel->cmd_reg) {
case 0xa1: // ATAPI Identify Device Packet
- if (drive->drive_type != IDE_CDROM) {
+ if (drive->drive_type != BLOCK_CDROM) {
drive_reset(drive);
// JRL: Should we abort here?
}
break;
case 0xec: // Identify Device
- if (drive->drive_type != IDE_DISK) {
+ if (drive->drive_type != BLOCK_DISK) {
drive_reset(drive);
// JRL: Should we abort here?
break;
case 0xa0: // ATAPI Command Packet
- if (drive->drive_type != IDE_CDROM) {
+ if (drive->drive_type != BLOCK_CDROM) {
ide_abort_command(dev, channel);
}
drive->hd_state.cur_sector_num = 1;
- drive->transfer_length = sect_cnt * IDE_SECTOR_SIZE;
+ drive->transfer_length = sect_cnt * HD_SECTOR_SIZE;
drive->transfer_index = 0;
if (channel->dma_status.active == 1) {
drive->hd_state.cur_sector_num = 1;
- drive->transfer_length = sect_cnt * IDE_SECTOR_SIZE;
+ drive->transfer_length = sect_cnt * HD_SECTOR_SIZE;
drive->transfer_index = 0;
if (channel->dma_status.active == 1) {
static int read_hd_data(uint8_t * dst, uint_t length, struct vm_device * dev, struct ide_channel * channel) {
struct ide_drive * drive = get_selected_drive(channel);
- int data_offset = drive->transfer_index % IDE_SECTOR_SIZE;
+ int data_offset = drive->transfer_index % HD_SECTOR_SIZE;
* cur_sector_num is configured depending on the operation we are currently running
* We also trigger an interrupt if this is the last byte to transfer, regardless of sector count
*/
- if (((drive->transfer_index % (IDE_SECTOR_SIZE * drive->hd_state.cur_sector_num)) == 0) ||
+ if (((drive->transfer_index % (HD_SECTOR_SIZE * drive->hd_state.cur_sector_num)) == 0) ||
(drive->transfer_index == drive->transfer_length)) {
if (drive->transfer_index < drive->transfer_length) {
// An increment is complete, but there is still more data to be transferred...
return read_drive_id((uint8_t *)dst, length, dev, channel);
}
- if (drive->drive_type == IDE_CDROM) {
+ if (drive->drive_type == BLOCK_CDROM) {
if (read_cd_data((uint8_t *)dst, length, dev, channel) == -1) {
PrintError("IDE: Could not read CD Data\n");
return -1;
}
- } else if (drive->drive_type == IDE_DISK) {
+ } else if (drive->drive_type == BLOCK_DISK) {
if (read_hd_data((uint8_t *)dst, length, dev, channel) == -1) {
PrintError("IDE: Could not read HD Data\n");
return -1;
drive = get_selected_drive(channel);
// Selecting a non-present device is a no-no
- if (drive->drive_type == IDE_NONE) {
+ if (drive->drive_type == BLOCK_NONE) {
PrintDebug("Attempting to select a non-present drive\n");
channel->error_reg.abort = 1;
channel->status.error = 1;
// if no drive is present just return 0 + reserved bits
- if (drive->drive_type == IDE_NONE) {
+ if (drive->drive_type == BLOCK_NONE) {
if ((port == PRI_DRV_SEL_PORT) ||
(port == SEC_DRV_SEL_PORT)) {
*(uint8_t *)dst = 0xa0;
drive->sector_num = 0x01;
drive->cylinder = 0x0000;
- drive->drive_type = IDE_NONE;
+ drive->drive_type = BLOCK_NONE;
memset(drive->model, 0, sizeof(drive->model));
struct ide_channel * channel = &(ide->channels[channel_num]);
struct ide_drive * drive = &(channel->drives[drive_num]);
- if (drive->drive_type == IDE_NONE) {
+ if (drive->drive_type == BLOCK_NONE) {
return -1;
}
uint_t bus_num,
uint_t drive_num,
char * dev_name,
- struct v3_ide_cd_ops * ops,
+ struct v3_cd_ops * ops,
void * private_data) {
struct ide_internal * ide = (struct ide_internal *)(ide_dev->private_data);
channel = &(ide->channels[bus_num]);
drive = &(channel->drives[drive_num]);
- if (drive->drive_type != IDE_NONE) {
+ if (drive->drive_type != BLOCK_NONE) {
PrintError("Device slot (bus=%d, drive=%d) already occupied\n", bus_num, drive_num);
return -1;
}
}
- drive->drive_type = IDE_CDROM;
+ drive->drive_type = BLOCK_CDROM;
drive->cd_ops = ops;
uint_t bus_num,
uint_t drive_num,
char * dev_name,
- struct v3_ide_hd_ops * ops,
+ struct v3_hd_ops * ops,
void * private_data) {
struct ide_internal * ide = (struct ide_internal *)(ide_dev->private_data);
channel = &(ide->channels[bus_num]);
drive = &(channel->drives[drive_num]);
- if (drive->drive_type != IDE_NONE) {
+ if (drive->drive_type != BLOCK_NONE) {
PrintError("Device slot (bus=%d, drive=%d) already occupied\n", bus_num, drive_num);
return -1;
}
strncpy(drive->model, dev_name, sizeof(drive->model) - 1);
- drive->drive_type = IDE_DISK;
+ drive->drive_type = BLOCK_DISK;
drive->hd_state.accessed = 0;
drive->hd_state.mult_sector_num = 1;
#include <palacios/vmm.h>
#include <palacios/vmm_dev_mgr.h>
#include <devices/lnx_virtio_pci.h>
-
+#include <devices/lnx_virtio_blk.h>
+#include <devices/block_dev.h>
+#include <palacios/vm_guest_mem.h>
#include <devices/pci.h>
+#define BLK_CAPACITY_PORT 20
+#define BLK_MAX_SIZE_PORT 28
+#define BLK_MAX_SEG_PORT 32
+#define BLK_CYLINDERS_PORT 36
+#define BLK_HEADS_PORT 38
+#define BLK_SECTS_PORT 39
+
+#define BLK_IN_REQ 0
+#define BLK_OUT_REQ 1
+#define BLK_SCSI_CMD 2
+
+#define BLK_BARRIER_FLAG 0x80000000
+
+#define BLK_STATUS_OK 0
+#define BLK_STATUS_ERR 1
+#define BLK_STATUS_NOT_SUPPORTED 2
+
+
struct blk_config {
uint64_t capacity;
uint32_t max_size;
+struct blk_op_hdr {
+ uint32_t type;
+ uint32_t prior;
+ uint64_t sector;
+} __attribute__((packed));
+
+#define QUEUE_SIZE 128
/* Host Feature flags */
#define VIRTIO_BARRIER 0x01 /* Does host support barriers? */
+
struct virtio_blk_state {
struct blk_config block_cfg;
struct virtio_config virtio_cfg;
struct vm_device * pci_bus;
struct pci_device * pci_dev;
-
- struct virtio_device * virtio_dev; // the virtio device struction for _this_ device
+ struct virtio_queue queue;
+
+ union {
+ struct v3_cd_ops * cd_ops;
+ struct v3_hd_ops * hd_ops;
+ };
+
+ v3_block_type_t block_type;
+ void * backend_data;
int io_range_size;
};
+static int virtio_free(struct vm_device * dev) {
+ return -1;
+}
+
+static int virtio_reset(struct vm_device * dev) {
+ struct virtio_blk_state * virtio = (struct virtio_blk_state *)dev->private_data;
+
+ virtio->queue.ring_desc_addr = 0;
+ virtio->queue.ring_avail_addr = 0;
+ virtio->queue.ring_used_addr = 0;
+ virtio->queue.pfn = 0;
+ virtio->queue.cur_avail_idx = 0;
+
+ virtio->virtio_cfg.status = 0;
+ virtio->virtio_cfg.pci_isr = 0;
+
+ return 0;
+}
+
+static int handle_read_op(struct vm_device * dev, uint8_t * buf, uint64_t sector, uint32_t len) {
+ struct virtio_blk_state * virtio = (struct virtio_blk_state *)dev->private_data;
+
+ if (virtio->block_type == BLOCK_DISK) {
+ if (len % HD_SECTOR_SIZE) {
+ PrintError("Write of something that is not a sector len %d, mod=%d\n", len, len % HD_SECTOR_SIZE);
+ return -1;
+ }
+
+
+ PrintDebug("Reading Disk\n");
+
+ return virtio->hd_ops->read(buf, len / HD_SECTOR_SIZE, sector * HD_SECTOR_SIZE, virtio->backend_data);
+ } else if (virtio->block_type == BLOCK_CDROM) {
+ if (len % ATAPI_BLOCK_SIZE) {
+ PrintError("Write of something that is not an ATAPI block len %d, mod=%d\n", len, len % ATAPI_BLOCK_SIZE);
+ return -1;
+ }
+
+ return virtio->cd_ops->read(buf, len / ATAPI_BLOCK_SIZE, sector * ATAPI_BLOCK_SIZE, virtio->backend_data);
+
+ }
+
+ return -1;
+}
+
+
+static int handle_write_op(struct vm_device * dev, uint8_t * buf, uint64_t sector, uint32_t len) {
+ struct virtio_blk_state * virtio = (struct virtio_blk_state *)dev->private_data;
+
+
+ if (virtio->block_type == BLOCK_DISK) {
+ if (len % HD_SECTOR_SIZE) {
+ PrintError("Write of something that is not a sector len %d, mod=%d\n", len, len % HD_SECTOR_SIZE);
+ return -1;
+ }
+
+ PrintDebug("Writing Disk\n");
+
+ return virtio->hd_ops->write(buf, len / HD_SECTOR_SIZE, sector * HD_SECTOR_SIZE, virtio->backend_data);
+ }
+
+ return -1;
+}
+
+
+static int handle_block_op(struct vm_device * dev, struct vring_desc * hdr_desc,
+ struct vring_desc * buf_desc, struct vring_desc * status_desc) {
+ struct virtio_blk_state * virtio = (struct virtio_blk_state *)dev->private_data;
+ struct blk_op_hdr * hdr = NULL;
+ uint8_t * buf = NULL;
+ uint8_t * status = NULL;
+
+
+ PrintDebug("Handling Block op\n");
+
+ if (guest_pa_to_host_va(dev->vm, hdr_desc->addr_gpa, (addr_t *)&(hdr)) == -1) {
+ PrintError("Could not translate block header address\n");
+ return -1;
+ }
+
+
+ if (guest_pa_to_host_va(dev->vm, buf_desc->addr_gpa, (addr_t *)&(buf)) == -1) {
+ PrintError("Could not translate buffer address\n");
+ return -1;
+ }
+
+ if (guest_pa_to_host_va(dev->vm, status_desc->addr_gpa, (addr_t *)&(status)) == -1) {
+ PrintError("Could not translate status address\n");
+ return -1;
+ }
+
+ if (hdr->type == BLK_IN_REQ) {
+ if (virtio->block_type != BLOCK_NONE) {
+ if (handle_read_op(dev, buf, hdr->sector, buf_desc->length) == -1) {
+ *status = BLK_STATUS_ERR;
+ } else {
+ *status = BLK_STATUS_OK;
+ }
+ } else {
+ *status = BLK_STATUS_NOT_SUPPORTED;
+ }
+
+ } else if (hdr->type == BLK_OUT_REQ) {
+ if (virtio->block_type == BLOCK_DISK) {
+ if (handle_write_op(dev, buf, hdr->sector, buf_desc->length) == -1) {
+ *status = BLK_STATUS_ERR;
+ } else {
+ *status = BLK_STATUS_OK;
+ }
+ } else {
+ *status = BLK_STATUS_NOT_SUPPORTED;
+ }
+ } else if (hdr->type == BLK_SCSI_CMD) {
+ *status = BLK_STATUS_NOT_SUPPORTED;
+ }
+
+
+
+
+ return 0;
+}
+
+
+
+static int handle_kick(struct vm_device * dev) {
+ struct virtio_blk_state * virtio = (struct virtio_blk_state *)dev->private_data;
+ struct virtio_queue * q = &(virtio->queue);
+
+
+ PrintDebug("VIRTIO KICK: cur_index=%d, avail_index=%d\n", q->cur_avail_idx, q->avail->index);
+
+ while (q->cur_avail_idx < q->avail->index) {
+ struct vring_desc * hdr_desc = NULL;
+ struct vring_desc * buf_desc = NULL;
+ struct vring_desc * status_desc = NULL;
+ uint16_t chain_idx = q->avail->ring[q->cur_avail_idx];
+ uint32_t req_len = 0;
+ int chained = 1;
+
+ PrintDebug("chained=%d, Chain Index=%d\n", chained, chain_idx);
+
+ while (chained) {
+ hdr_desc = &(q->desc[chain_idx]);
+
+ PrintDebug("Header Descriptor gpa=%p, len=%d, flags=%x, next=%d\n",
+ (void *)(hdr_desc->addr_gpa), hdr_desc->length, hdr_desc->flags, hdr_desc->next);
+
+
+ if (!(hdr_desc->flags & VIRTIO_NEXT_FLAG)) {
+ PrintError("Block operations must chain a buffer descriptor\n");
+ return -1;
+ }
+
+ buf_desc = &(q->desc[hdr_desc->next]);
+
+
+ PrintDebug("Buffer Descriptor gpa=%p, len=%d, flags=%x, next=%d\n",
+ (void *)(buf_desc->addr_gpa), buf_desc->length, buf_desc->flags, buf_desc->next);
+
+
+ if (!(buf_desc->flags & VIRTIO_NEXT_FLAG)) {
+ PrintError("Block operatoins must chain a status descriptor\n");
+ return -1;
+ }
+
+ status_desc = &(q->desc[buf_desc->next]);
+
+ // We detect whether we are chained here...
+ if (status_desc->flags & VIRTIO_NEXT_FLAG) {
+ chained = 1;
+ chain_idx = status_desc->next;
+ } else {
+ chained = 0;
+ }
+
+ PrintDebug("Status Descriptor gpa=%p, len=%d, flags=%x, next=%d\n",
+ (void *)(status_desc->addr_gpa), status_desc->length, status_desc->flags, status_desc->next);
+
+
+ if (handle_block_op(dev, hdr_desc, buf_desc, status_desc) == -1) {
+ PrintError("Error handling block operation\n");
+ return -1;
+ }
+
+ req_len += (buf_desc->length + status_desc->length);
+
+ }
+
+ q->used->ring[q->used->index].id = q->cur_avail_idx;
+ q->used->ring[q->used->index].length = req_len; // What do we set this to????
+
+ q->used->index = (q->used->index + 1) % (QUEUE_SIZE * sizeof(struct vring_desc));;
+ q->cur_avail_idx = (q->cur_avail_idx + 1) % (QUEUE_SIZE * sizeof(struct vring_desc));
+ }
+
+ if (!(q->avail->flags & VIRTIO_NO_IRQ_FLAG)) {
+ PrintDebug("Raising IRQ %d\n", virtio->pci_dev->config_header.intr_line);
+ v3_pci_raise_irq(virtio->pci_bus, 0, virtio->pci_dev);
+ }
+
+ return 0;
+}
+
static int virtio_io_write(uint16_t port, void * src, uint_t length, struct vm_device * dev) {
struct virtio_blk_state * virtio = (struct virtio_blk_state *)dev->private_data;
int port_idx = port % virtio->io_range_size;
switch (port_idx) {
+ case GUEST_FEATURES_PORT:
+ if (length != 4) {
+ PrintError("Illegal write length for guest features\n");
+ return -1;
+ }
+
+ virtio->virtio_cfg.guest_features = *(uint32_t *)src;
+
+ break;
+ case VRING_PG_NUM_PORT:
+ if (length == 4) {
+ addr_t pfn = *(uint32_t *)src;
+ addr_t page_addr = (pfn << VIRTIO_PAGE_SHIFT);
+
+
+ virtio->queue.pfn = pfn;
+
+ virtio->queue.ring_desc_addr = page_addr ;
+ virtio->queue.ring_avail_addr = page_addr + (QUEUE_SIZE * sizeof(struct vring_desc));
+ virtio->queue.ring_used_addr = ( virtio->queue.ring_avail_addr + \
+ sizeof(struct vring_avail) + \
+ (QUEUE_SIZE * sizeof(uint16_t)));
+
+ // round up to next page boundary.
+ virtio->queue.ring_used_addr = (virtio->queue.ring_used_addr + 0xfff) & ~0xfff;
+
+ if (guest_pa_to_host_va(dev->vm, virtio->queue.ring_desc_addr, (addr_t *)&(virtio->queue.desc)) == -1) {
+ PrintError("Could not translate ring descriptor address\n");
+ return -1;
+ }
+
+
+ if (guest_pa_to_host_va(dev->vm, virtio->queue.ring_avail_addr, (addr_t *)&(virtio->queue.avail)) == -1) {
+ PrintError("Could not translate ring available address\n");
+ return -1;
+ }
+
+
+ if (guest_pa_to_host_va(dev->vm, virtio->queue.ring_used_addr, (addr_t *)&(virtio->queue.used)) == -1) {
+ PrintError("Could not translate ring used address\n");
+ return -1;
+ }
+
+ PrintDebug("RingDesc=%p, Avail=%p, Used=%p\n",
+ (void *)(virtio->queue.ring_desc_addr),
+ (void *)(virtio->queue.ring_avail_addr),
+ (void *)(virtio->queue.ring_used_addr));
+
+ } else {
+ PrintError("Illegal write length for page frame number\n");
+ return -1;
+ }
+ break;
+ case VRING_Q_SEL_PORT:
+ virtio->virtio_cfg.vring_queue_selector = *(uint16_t *)src;
+
+ if (virtio->virtio_cfg.vring_queue_selector != 0) {
+ PrintError("Virtio Block device only uses 1 queue, selected %d\n",
+ virtio->virtio_cfg.vring_queue_selector);
+ return -1;
+ }
+
+ break;
case VRING_Q_NOTIFY_PORT:
- // handle output
- PrintError("Notification\n");
- return -1;
+ PrintDebug("Handling Kick\n");
+ if (handle_kick(dev) == -1) {
+ PrintError("Could not handle Block Notification\n");
+ return -1;
+ }
break;
case VIRTIO_STATUS_PORT:
+ virtio->virtio_cfg.status = *(uint8_t *)src;
+
if (virtio->virtio_cfg.status == 0) {
PrintDebug("Resetting device\n");
- return -1;
- //reset
+ virtio_reset(dev);
}
+
break;
default:
return -1;
port, port_idx, length);
switch (port_idx) {
- // search for device....
- // call and return dev config read
+ case HOST_FEATURES_PORT:
+ if (length != 4) {
+ PrintError("Illegal read length for host features\n");
+ return -1;
+ }
+
+ *(uint32_t *)dst = virtio->virtio_cfg.host_features;
+
+ break;
+ case VRING_PG_NUM_PORT:
+ if (length != 4) {
+ PrintError("Illegal read length for page frame number\n");
+ return -1;
+ }
+
+ *(uint32_t *)dst = virtio->queue.pfn;
+
+ break;
+ case VRING_SIZE_PORT:
+ if (length != 2) {
+ PrintError("Illegal read length for vring size\n");
+ return -1;
+ }
+
+ *(uint16_t *)dst = virtio->queue.queue_size;
+
+ break;
+
+ case VIRTIO_STATUS_PORT:
+ if (length != 1) {
+ PrintError("Illegal read length for status\n");
+ return -1;
+ }
+
+ *(uint8_t *)dst = virtio->virtio_cfg.status;
+ break;
+
default:
- return -1;
+ if ( (port_idx >= sizeof(struct virtio_config)) &&
+ (port_idx < (sizeof(struct virtio_config) + sizeof(struct blk_config))) ) {
+
+ uint8_t * cfg_ptr = (uint8_t *)&(virtio->block_cfg);
+ memcpy(dst, cfg_ptr, length);
+
+ } else {
+ PrintError("Read of Unhandled Virtio Read\n");
+ return -1;
+ }
+
+ break;
}
- return length;
-}
-static int virtio_free(struct vm_device * dev) {
- return -1;
+ return length;
}
+int v3_virtio_register_cdrom(struct vm_device * dev, struct v3_cd_ops * ops, void * private_data) {
+ struct virtio_blk_state * virtio = (struct virtio_blk_state *)dev->private_data;
+
+ virtio->block_type = BLOCK_CDROM;
+ virtio->cd_ops = ops;
+ virtio->backend_data = private_data;
+
+ virtio->block_cfg.capacity = ops->get_capacity(private_data);
+
+ return 0;
+}
+
+
+int v3_virtio_register_harddisk(struct vm_device * dev, struct v3_hd_ops * ops, void * private_data) {
+ struct virtio_blk_state * virtio = (struct virtio_blk_state *)dev->private_data;
+
+ virtio->block_type = BLOCK_DISK;
+ virtio->hd_ops = ops;
+ virtio->backend_data = private_data;
+
+ virtio->block_cfg.capacity = ops->get_capacity(private_data);
+
+ return 0;
+}
+
static int virtio_init(struct guest_info * vm, void * cfg_data) {
virtio_state->pci_dev = pci_dev;
virtio_state->pci_bus = pci_bus;
-
- /* Block configuration */
}
-
+
+ /* Block configuration */
+ virtio_state->virtio_cfg.host_features = VIRTIO_SEG_MAX;
+
+ // Virtio Block only uses one queue
+ virtio_state->queue.queue_size = QUEUE_SIZE;
+
+ virtio_reset(dev);
+
+ virtio_state->backend_data = NULL;
+ virtio_state->block_type = BLOCK_NONE;
+ virtio_state->hd_ops = NULL;
+
return 0;
}
return cd->capacity / ATAPI_BLOCK_SIZE;
}
-static struct v3_ide_cd_ops cd_ops = {
+static struct v3_cd_ops cd_ops = {
.read = cd_read,
.get_capacity = cd_get_capacity,
};
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 * IDE_SECTOR_SIZE;
- int length = sector_count * IDE_SECTOR_SIZE;
+ int offset = lba * HD_SECTOR_SIZE;
+ int length = sector_count * HD_SECTOR_SIZE;
uint8_t status;
uint32_t ret_len = 0;
char nbd_cmd[4] = {0,0,0,0};
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 * IDE_SECTOR_SIZE;
- int length = sector_count * IDE_SECTOR_SIZE;
+ int offset = lba * HD_SECTOR_SIZE;
+ int length = sector_count * HD_SECTOR_SIZE;
uint8_t status;
char nbd_cmd[4] = {0,0,0,0};
struct vm_device * hd_dev = (struct vm_device *)private_data;
struct hd_state * hd = (struct hd_state *)(hd_dev->private_data);
- return hd->capacity / IDE_SECTOR_SIZE;
+ return hd->capacity / HD_SECTOR_SIZE;
}
-static struct v3_ide_hd_ops hd_ops = {
+static struct v3_hd_ops hd_ops = {
.read = hd_read,
.write = hd_write,
.get_capacity = hd_get_capacity,
return cd->capacity / ATAPI_BLOCK_SIZE;
}
-static struct v3_ide_cd_ops cd_ops = {
+static struct v3_cd_ops cd_ops = {
.read = cd_read,
.get_capacity = cd_get_capacity,
};
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 * IDE_SECTOR_SIZE;
- int length = sector_count * IDE_SECTOR_SIZE;
+ 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);
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 * IDE_SECTOR_SIZE;
- int length = sector_count * IDE_SECTOR_SIZE;
+ int offset = lba * HD_SECTOR_SIZE;
+ int length = sector_count * HD_SECTOR_SIZE;
memcpy((uint8_t *)(hd->disk_image + offset), buf, length);
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 / IDE_SECTOR_SIZE);
- return hd->capacity / IDE_SECTOR_SIZE;
+ hd->capacity, hd->capacity / HD_SECTOR_SIZE);
+ return hd->capacity / HD_SECTOR_SIZE;
}
-static struct v3_ide_hd_ops hd_ops = {
+static struct v3_hd_ops hd_ops = {
.read = hd_read,
.write = hd_write,
.get_capacity = hd_get_capacity,
struct hd_state * hd = NULL;
struct ram_hd_cfg * cfg = (struct ram_hd_cfg *)cfg_data;
- if (cfg->size % IDE_SECTOR_SIZE) {
- PrintError("HD image must be an integral of sector size (IDE_SECTOR_SIZE=%d)\n", IDE_SECTOR_SIZE);
+ 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;
}
#include <palacios/vmm.h>
#include <palacios/vmm_dev_mgr.h>
+#include <devices/lnx_virtio_blk.h>
-
-
+#define SWAP_CAPACITY (4096 * HD_SECTOR_SIZE)
struct swap_state {
struct vm_device * blk_dev;
+ uint64_t capacity;
+ uint8_t * swap_space;
+ addr_t swap_base_addr;
+
};
+static uint64_t swap_get_capacity(void * private_data) {
+ struct vm_device * dev = (struct vm_device *)private_data;
+ struct swap_state * swap = (struct swap_state *)(dev->private_data);
+
+ return swap->capacity / HD_SECTOR_SIZE;
+}
+
+static int swap_read(uint8_t * buf, int sector_count, uint64_t lba, void * private_data) {
+ struct vm_device * dev = (struct vm_device *)private_data;
+ struct swap_state * swap = (struct swap_state *)(dev->private_data);
+ int offset = lba * HD_SECTOR_SIZE;
+ int length = sector_count * HD_SECTOR_SIZE;
+
+ PrintDebug("SymSwap: Reading %d bytes\n", length);
+
+ memcpy(buf, swap->swap_space + offset, length);
+
+ return 0;
+}
+
+static int swap_write(uint8_t * buf, int sector_count, uint64_t lba, void * private_data) {
+ struct vm_device * dev = (struct vm_device *)private_data;
+ struct swap_state * swap = (struct swap_state *)(dev->private_data);
+ int offset = lba * HD_SECTOR_SIZE;
+ int length = sector_count * HD_SECTOR_SIZE;
+
+ PrintDebug("SymSwap: Writing %d bytes\n", length);
+
+ memcpy(swap->swap_space + offset, buf, length);
+
+ return 0;
+}
+
static int swap_free(struct vm_device * dev) {
return -1;
}
+static struct v3_hd_ops hd_ops = {
+ .read = swap_read,
+ .write = swap_write,
+ .get_capacity = swap_get_capacity,
+};
+
+
static struct v3_device_ops dev_ops = {
.free = swap_free,
swap = (struct swap_state *)V3_Malloc(sizeof(struct swap_state));
swap->blk_dev = virtio_blk;
+ swap->capacity = SWAP_CAPACITY;
+
+ swap->swap_base_addr = (addr_t)V3_AllocPages(swap->capacity / 4096);
+ swap->swap_space = (uint8_t *)V3_VAddr((void *)(swap->swap_base_addr));
struct vm_device * dev = v3_allocate_device("SYM_SWAP", &dev_ops, swap);
return -1;
}
+
+ v3_virtio_register_harddisk(virtio_blk, &hd_ops, dev);
+
return 0;
}
v3_create_device(info, "LNX_VIRTIO_BLK", "PCI");
+ v3_create_device(info, "SYM_SWAP", "LNX_VIRTIO_BLK");
+
v3_create_device(info, "IDE", &ide_config);
} else {
v3_create_device(info, "IDE", NULL);
