2009-05-18 15:51:59 +02:00
|
|
|
/*
|
|
|
|
* Virtio PCI Bindings
|
|
|
|
*
|
|
|
|
* Copyright IBM, Corp. 2007
|
|
|
|
* Copyright (c) 2009 CodeSourcery
|
|
|
|
*
|
|
|
|
* Authors:
|
|
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
|
|
* Paul Brook <paul@codesourcery.com>
|
|
|
|
*
|
|
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
|
|
* the COPYING file in the top-level directory.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <inttypes.h>
|
|
|
|
|
|
|
|
#include "virtio.h"
|
|
|
|
#include "pci.h"
|
qdev-ify virtio-blk.
First user of the new drive property. With this patch applied host
and guest config can be specified separately, like this:
-drive if=none,id=disk1,file=/path/to/disk.img
-device virtio-blk-pci,drive=disk1
You can set any property for virtio-blk-pci now. You can set the pci
address via addr=. You can switch the device into 0.10 compat mode
using class=0x0180. As this is per device you can have one 0.10 and one
0.11 virtio block device in a single virtual machine.
Old syntax continues to work. Internally it does the same as the two
lines above though. One side effect this has is a different
initialization order, which might result in a different pci address
being assigned by default.
Long term plan here is to have this working for all block devices, i.e.
once all scsi is properly qdev-ified you will be able to do something
like this:
-drive if=none,id=sda,file=/path/to/disk.img
-device lsi,id=lsi,addr=<pciaddr>
-device scsi-disk,drive=sda,bus=lsi.0,lun=<n>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Message-Id:
2009-07-31 12:25:41 +02:00
|
|
|
#include "sysemu.h"
|
2009-06-21 18:50:26 +02:00
|
|
|
#include "msix.h"
|
2009-07-15 13:48:25 +02:00
|
|
|
#include "net.h"
|
2009-10-21 15:25:35 +02:00
|
|
|
#include "loader.h"
|
2009-05-18 15:51:59 +02:00
|
|
|
|
|
|
|
/* from Linux's linux/virtio_pci.h */
|
|
|
|
|
|
|
|
/* A 32-bit r/o bitmask of the features supported by the host */
|
|
|
|
#define VIRTIO_PCI_HOST_FEATURES 0
|
|
|
|
|
|
|
|
/* A 32-bit r/w bitmask of features activated by the guest */
|
|
|
|
#define VIRTIO_PCI_GUEST_FEATURES 4
|
|
|
|
|
|
|
|
/* A 32-bit r/w PFN for the currently selected queue */
|
|
|
|
#define VIRTIO_PCI_QUEUE_PFN 8
|
|
|
|
|
|
|
|
/* A 16-bit r/o queue size for the currently selected queue */
|
|
|
|
#define VIRTIO_PCI_QUEUE_NUM 12
|
|
|
|
|
|
|
|
/* A 16-bit r/w queue selector */
|
|
|
|
#define VIRTIO_PCI_QUEUE_SEL 14
|
|
|
|
|
|
|
|
/* A 16-bit r/w queue notifier */
|
|
|
|
#define VIRTIO_PCI_QUEUE_NOTIFY 16
|
|
|
|
|
|
|
|
/* An 8-bit device status register. */
|
|
|
|
#define VIRTIO_PCI_STATUS 18
|
|
|
|
|
|
|
|
/* An 8-bit r/o interrupt status register. Reading the value will return the
|
|
|
|
* current contents of the ISR and will also clear it. This is effectively
|
|
|
|
* a read-and-acknowledge. */
|
|
|
|
#define VIRTIO_PCI_ISR 19
|
|
|
|
|
2009-06-21 18:50:26 +02:00
|
|
|
/* MSI-X registers: only enabled if MSI-X is enabled. */
|
|
|
|
/* A 16-bit vector for configuration changes. */
|
|
|
|
#define VIRTIO_MSI_CONFIG_VECTOR 20
|
|
|
|
/* A 16-bit vector for selected queue notifications. */
|
|
|
|
#define VIRTIO_MSI_QUEUE_VECTOR 22
|
|
|
|
|
|
|
|
/* Config space size */
|
|
|
|
#define VIRTIO_PCI_CONFIG_NOMSI 20
|
|
|
|
#define VIRTIO_PCI_CONFIG_MSI 24
|
|
|
|
#define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \
|
|
|
|
VIRTIO_PCI_CONFIG_MSI : \
|
|
|
|
VIRTIO_PCI_CONFIG_NOMSI)
|
|
|
|
|
|
|
|
/* The remaining space is defined by each driver as the per-driver
|
|
|
|
* configuration space */
|
|
|
|
#define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \
|
|
|
|
VIRTIO_PCI_CONFIG_MSI : \
|
|
|
|
VIRTIO_PCI_CONFIG_NOMSI)
|
2009-05-18 15:51:59 +02:00
|
|
|
|
|
|
|
/* Virtio ABI version, if we increment this, we break the guest driver. */
|
|
|
|
#define VIRTIO_PCI_ABI_VERSION 0
|
|
|
|
|
|
|
|
/* How many bits to shift physical queue address written to QUEUE_PFN.
|
|
|
|
* 12 is historical, and due to x86 page size. */
|
|
|
|
#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12
|
|
|
|
|
|
|
|
/* QEMU doesn't strictly need write barriers since everything runs in
|
|
|
|
* lock-step. We'll leave the calls to wmb() in though to make it obvious for
|
|
|
|
* KVM or if kqemu gets SMP support.
|
|
|
|
*/
|
|
|
|
#define wmb() do { } while (0)
|
|
|
|
|
|
|
|
/* PCI bindings. */
|
|
|
|
|
|
|
|
typedef struct {
|
|
|
|
PCIDevice pci_dev;
|
|
|
|
VirtIODevice *vdev;
|
|
|
|
uint32_t addr;
|
2009-07-15 13:48:23 +02:00
|
|
|
uint32_t class_code;
|
2009-07-15 13:48:25 +02:00
|
|
|
uint32_t nvectors;
|
qdev-ify virtio-blk.
First user of the new drive property. With this patch applied host
and guest config can be specified separately, like this:
-drive if=none,id=disk1,file=/path/to/disk.img
-device virtio-blk-pci,drive=disk1
You can set any property for virtio-blk-pci now. You can set the pci
address via addr=. You can switch the device into 0.10 compat mode
using class=0x0180. As this is per device you can have one 0.10 and one
0.11 virtio block device in a single virtual machine.
Old syntax continues to work. Internally it does the same as the two
lines above though. One side effect this has is a different
initialization order, which might result in a different pci address
being assigned by default.
Long term plan here is to have this working for all block devices, i.e.
once all scsi is properly qdev-ified you will be able to do something
like this:
-drive if=none,id=sda,file=/path/to/disk.img
-device lsi,id=lsi,addr=<pciaddr>
-device scsi-disk,drive=sda,bus=lsi.0,lun=<n>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Message-Id:
2009-07-31 12:25:41 +02:00
|
|
|
DriveInfo *dinfo;
|
2009-10-21 15:25:35 +02:00
|
|
|
NICConf nic;
|
2009-05-18 15:51:59 +02:00
|
|
|
} VirtIOPCIProxy;
|
|
|
|
|
|
|
|
/* virtio device */
|
|
|
|
|
2009-06-21 18:50:13 +02:00
|
|
|
static void virtio_pci_notify(void *opaque, uint16_t vector)
|
2009-05-18 15:51:59 +02:00
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
2009-06-21 18:50:26 +02:00
|
|
|
if (msix_enabled(&proxy->pci_dev))
|
|
|
|
msix_notify(&proxy->pci_dev, vector);
|
|
|
|
else
|
|
|
|
qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1);
|
2009-05-18 15:51:59 +02:00
|
|
|
}
|
|
|
|
|
2009-06-21 18:50:40 +02:00
|
|
|
static void virtio_pci_save_config(void * opaque, QEMUFile *f)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
|
|
|
pci_device_save(&proxy->pci_dev, f);
|
|
|
|
msix_save(&proxy->pci_dev, f);
|
|
|
|
if (msix_present(&proxy->pci_dev))
|
|
|
|
qemu_put_be16(f, proxy->vdev->config_vector);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
|
|
|
if (msix_present(&proxy->pci_dev))
|
|
|
|
qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n));
|
|
|
|
}
|
|
|
|
|
|
|
|
static int virtio_pci_load_config(void * opaque, QEMUFile *f)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
|
|
|
int ret;
|
|
|
|
ret = pci_device_load(&proxy->pci_dev, f);
|
2009-07-05 15:02:34 +02:00
|
|
|
if (ret) {
|
2009-06-21 18:50:40 +02:00
|
|
|
return ret;
|
2009-07-05 15:02:34 +02:00
|
|
|
}
|
2009-06-21 18:50:40 +02:00
|
|
|
msix_load(&proxy->pci_dev, f);
|
2009-07-05 15:02:34 +02:00
|
|
|
if (msix_present(&proxy->pci_dev)) {
|
2009-06-21 18:50:40 +02:00
|
|
|
qemu_get_be16s(f, &proxy->vdev->config_vector);
|
2009-07-05 15:02:34 +02:00
|
|
|
} else {
|
|
|
|
proxy->vdev->config_vector = VIRTIO_NO_VECTOR;
|
|
|
|
}
|
|
|
|
if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) {
|
|
|
|
return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector);
|
|
|
|
}
|
2009-06-21 18:50:40 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
|
|
|
uint16_t vector;
|
2009-07-05 15:02:34 +02:00
|
|
|
if (msix_present(&proxy->pci_dev)) {
|
|
|
|
qemu_get_be16s(f, &vector);
|
|
|
|
} else {
|
|
|
|
vector = VIRTIO_NO_VECTOR;
|
|
|
|
}
|
2009-06-21 18:50:40 +02:00
|
|
|
virtio_queue_set_vector(proxy->vdev, n, vector);
|
2009-07-05 15:02:34 +02:00
|
|
|
if (vector != VIRTIO_NO_VECTOR) {
|
|
|
|
return msix_vector_use(&proxy->pci_dev, vector);
|
|
|
|
}
|
2009-06-21 18:50:40 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-09-16 12:40:37 +02:00
|
|
|
static void virtio_pci_reset(DeviceState *d)
|
2009-06-21 18:50:13 +02:00
|
|
|
{
|
2009-09-16 12:40:37 +02:00
|
|
|
VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev);
|
2009-06-21 18:50:13 +02:00
|
|
|
virtio_reset(proxy->vdev);
|
2009-06-21 18:50:26 +02:00
|
|
|
msix_reset(&proxy->pci_dev);
|
2009-06-21 18:50:13 +02:00
|
|
|
}
|
|
|
|
|
2009-05-18 15:51:59 +02:00
|
|
|
static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
|
|
|
VirtIODevice *vdev = proxy->vdev;
|
2009-10-01 23:12:16 +02:00
|
|
|
target_phys_addr_t pa;
|
2009-05-18 15:51:59 +02:00
|
|
|
|
|
|
|
switch (addr) {
|
|
|
|
case VIRTIO_PCI_GUEST_FEATURES:
|
|
|
|
/* Guest does not negotiate properly? We have to assume nothing. */
|
|
|
|
if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
|
|
|
|
if (vdev->bad_features)
|
|
|
|
val = vdev->bad_features(vdev);
|
|
|
|
else
|
|
|
|
val = 0;
|
|
|
|
}
|
|
|
|
if (vdev->set_features)
|
|
|
|
vdev->set_features(vdev, val);
|
|
|
|
vdev->features = val;
|
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_QUEUE_PFN:
|
2009-10-01 23:12:16 +02:00
|
|
|
pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
|
2009-11-24 15:45:35 +01:00
|
|
|
if (pa == 0) {
|
|
|
|
virtio_reset(proxy->vdev);
|
|
|
|
msix_unuse_all_vectors(&proxy->pci_dev);
|
|
|
|
}
|
2009-06-21 18:50:13 +02:00
|
|
|
else
|
|
|
|
virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
|
2009-05-18 15:51:59 +02:00
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_QUEUE_SEL:
|
|
|
|
if (val < VIRTIO_PCI_QUEUE_MAX)
|
|
|
|
vdev->queue_sel = val;
|
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_QUEUE_NOTIFY:
|
|
|
|
virtio_queue_notify(vdev, val);
|
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_STATUS:
|
|
|
|
vdev->status = val & 0xFF;
|
2009-11-24 15:45:35 +01:00
|
|
|
if (vdev->status == 0) {
|
|
|
|
virtio_reset(proxy->vdev);
|
|
|
|
msix_unuse_all_vectors(&proxy->pci_dev);
|
|
|
|
}
|
2009-05-18 15:51:59 +02:00
|
|
|
break;
|
2009-06-21 18:50:26 +02:00
|
|
|
case VIRTIO_MSI_CONFIG_VECTOR:
|
|
|
|
msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
|
|
|
|
/* Make it possible for guest to discover an error took place. */
|
|
|
|
if (msix_vector_use(&proxy->pci_dev, val) < 0)
|
|
|
|
val = VIRTIO_NO_VECTOR;
|
|
|
|
vdev->config_vector = val;
|
|
|
|
break;
|
|
|
|
case VIRTIO_MSI_QUEUE_VECTOR:
|
|
|
|
msix_vector_unuse(&proxy->pci_dev,
|
|
|
|
virtio_queue_vector(vdev, vdev->queue_sel));
|
|
|
|
/* Make it possible for guest to discover an error took place. */
|
|
|
|
if (msix_vector_use(&proxy->pci_dev, val) < 0)
|
|
|
|
val = VIRTIO_NO_VECTOR;
|
|
|
|
virtio_queue_set_vector(vdev, vdev->queue_sel, val);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
fprintf(stderr, "%s: unexpected address 0x%x value 0x%x\n",
|
|
|
|
__func__, addr, val);
|
|
|
|
break;
|
2009-05-18 15:51:59 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-06-21 18:50:26 +02:00
|
|
|
static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
|
2009-05-18 15:51:59 +02:00
|
|
|
{
|
|
|
|
VirtIODevice *vdev = proxy->vdev;
|
|
|
|
uint32_t ret = 0xFFFFFFFF;
|
|
|
|
|
|
|
|
switch (addr) {
|
|
|
|
case VIRTIO_PCI_HOST_FEATURES:
|
|
|
|
ret = vdev->get_features(vdev);
|
2009-12-08 19:07:48 +01:00
|
|
|
ret |= vdev->binding->get_features(proxy);
|
2009-05-18 15:51:59 +02:00
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_GUEST_FEATURES:
|
|
|
|
ret = vdev->features;
|
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_QUEUE_PFN:
|
|
|
|
ret = virtio_queue_get_addr(vdev, vdev->queue_sel)
|
|
|
|
>> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
|
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_QUEUE_NUM:
|
|
|
|
ret = virtio_queue_get_num(vdev, vdev->queue_sel);
|
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_QUEUE_SEL:
|
|
|
|
ret = vdev->queue_sel;
|
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_STATUS:
|
|
|
|
ret = vdev->status;
|
|
|
|
break;
|
|
|
|
case VIRTIO_PCI_ISR:
|
|
|
|
/* reading from the ISR also clears it. */
|
|
|
|
ret = vdev->isr;
|
|
|
|
vdev->isr = 0;
|
2009-06-21 18:50:13 +02:00
|
|
|
qemu_set_irq(proxy->pci_dev.irq[0], 0);
|
2009-05-18 15:51:59 +02:00
|
|
|
break;
|
2009-06-21 18:50:26 +02:00
|
|
|
case VIRTIO_MSI_CONFIG_VECTOR:
|
|
|
|
ret = vdev->config_vector;
|
|
|
|
break;
|
|
|
|
case VIRTIO_MSI_QUEUE_VECTOR:
|
|
|
|
ret = virtio_queue_vector(vdev, vdev->queue_sel);
|
|
|
|
break;
|
2009-05-18 15:51:59 +02:00
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
2009-06-21 18:50:26 +02:00
|
|
|
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
|
|
|
|
addr -= proxy->addr;
|
|
|
|
if (addr < config)
|
|
|
|
return virtio_ioport_read(proxy, addr);
|
|
|
|
addr -= config;
|
2009-05-18 15:51:59 +02:00
|
|
|
return virtio_config_readb(proxy->vdev, addr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
2009-06-21 18:50:26 +02:00
|
|
|
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
|
|
|
|
addr -= proxy->addr;
|
|
|
|
if (addr < config)
|
|
|
|
return virtio_ioport_read(proxy, addr);
|
|
|
|
addr -= config;
|
2009-05-18 15:51:59 +02:00
|
|
|
return virtio_config_readw(proxy->vdev, addr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
2009-06-21 18:50:26 +02:00
|
|
|
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
|
|
|
|
addr -= proxy->addr;
|
|
|
|
if (addr < config)
|
|
|
|
return virtio_ioport_read(proxy, addr);
|
|
|
|
addr -= config;
|
2009-05-18 15:51:59 +02:00
|
|
|
return virtio_config_readl(proxy->vdev, addr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
2009-06-21 18:50:26 +02:00
|
|
|
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
|
|
|
|
addr -= proxy->addr;
|
|
|
|
if (addr < config) {
|
|
|
|
virtio_ioport_write(proxy, addr, val);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
addr -= config;
|
2009-05-18 15:51:59 +02:00
|
|
|
virtio_config_writeb(proxy->vdev, addr, val);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
2009-06-21 18:50:26 +02:00
|
|
|
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
|
|
|
|
addr -= proxy->addr;
|
|
|
|
if (addr < config) {
|
|
|
|
virtio_ioport_write(proxy, addr, val);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
addr -= config;
|
2009-05-18 15:51:59 +02:00
|
|
|
virtio_config_writew(proxy->vdev, addr, val);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = opaque;
|
2009-06-21 18:50:26 +02:00
|
|
|
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
|
|
|
|
addr -= proxy->addr;
|
|
|
|
if (addr < config) {
|
|
|
|
virtio_ioport_write(proxy, addr, val);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
addr -= config;
|
2009-05-18 15:51:59 +02:00
|
|
|
virtio_config_writel(proxy->vdev, addr, val);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_map(PCIDevice *pci_dev, int region_num,
|
2009-10-30 13:21:08 +01:00
|
|
|
pcibus_t addr, pcibus_t size, int type)
|
2009-05-18 15:51:59 +02:00
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = container_of(pci_dev, VirtIOPCIProxy, pci_dev);
|
|
|
|
VirtIODevice *vdev = proxy->vdev;
|
2009-06-21 18:50:26 +02:00
|
|
|
unsigned config_len = VIRTIO_PCI_REGION_SIZE(pci_dev) + vdev->config_len;
|
2009-05-18 15:51:59 +02:00
|
|
|
|
|
|
|
proxy->addr = addr;
|
|
|
|
|
2009-06-21 18:50:26 +02:00
|
|
|
register_ioport_write(addr, config_len, 1, virtio_pci_config_writeb, proxy);
|
|
|
|
register_ioport_write(addr, config_len, 2, virtio_pci_config_writew, proxy);
|
|
|
|
register_ioport_write(addr, config_len, 4, virtio_pci_config_writel, proxy);
|
|
|
|
register_ioport_read(addr, config_len, 1, virtio_pci_config_readb, proxy);
|
|
|
|
register_ioport_read(addr, config_len, 2, virtio_pci_config_readw, proxy);
|
|
|
|
register_ioport_read(addr, config_len, 4, virtio_pci_config_readl, proxy);
|
2009-05-18 15:51:59 +02:00
|
|
|
|
2009-06-21 18:50:26 +02:00
|
|
|
if (vdev->config_len)
|
2009-05-18 15:51:59 +02:00
|
|
|
vdev->get_config(vdev, vdev->config);
|
2009-06-21 18:50:26 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
|
|
|
|
uint32_t val, int len)
|
|
|
|
{
|
2009-09-08 16:49:41 +02:00
|
|
|
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
|
|
|
|
|
|
|
|
if (PCI_COMMAND == address) {
|
|
|
|
if (!(val & PCI_COMMAND_MASTER)) {
|
|
|
|
proxy->vdev->status &= !VIRTIO_CONFIG_S_DRIVER_OK;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-06-21 18:50:26 +02:00
|
|
|
pci_default_write_config(pci_dev, address, val, len);
|
2009-09-22 12:35:28 +02:00
|
|
|
msix_write_config(pci_dev, address, val, len);
|
2009-05-18 15:51:59 +02:00
|
|
|
}
|
|
|
|
|
2009-12-08 19:07:48 +01:00
|
|
|
static unsigned virtio_pci_get_features(void *opaque)
|
|
|
|
{
|
|
|
|
unsigned ret = 0;
|
|
|
|
ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY);
|
|
|
|
ret |= (1 << VIRTIO_RING_F_INDIRECT_DESC);
|
|
|
|
ret |= (1 << VIRTIO_F_BAD_FEATURE);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2009-05-18 15:51:59 +02:00
|
|
|
static const VirtIOBindings virtio_pci_bindings = {
|
2009-06-21 18:50:40 +02:00
|
|
|
.notify = virtio_pci_notify,
|
|
|
|
.save_config = virtio_pci_save_config,
|
|
|
|
.load_config = virtio_pci_load_config,
|
|
|
|
.save_queue = virtio_pci_save_queue,
|
|
|
|
.load_queue = virtio_pci_load_queue,
|
2009-12-08 19:07:48 +01:00
|
|
|
.get_features = virtio_pci_get_features,
|
2009-05-18 15:51:59 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
|
|
|
|
uint16_t vendor, uint16_t device,
|
|
|
|
uint16_t class_code, uint8_t pif)
|
|
|
|
{
|
|
|
|
uint8_t *config;
|
|
|
|
uint32_t size;
|
|
|
|
|
|
|
|
proxy->vdev = vdev;
|
|
|
|
|
|
|
|
config = proxy->pci_dev.config;
|
|
|
|
pci_config_set_vendor_id(config, vendor);
|
|
|
|
pci_config_set_device_id(config, device);
|
|
|
|
|
|
|
|
config[0x08] = VIRTIO_PCI_ABI_VERSION;
|
|
|
|
|
|
|
|
config[0x09] = pif;
|
|
|
|
pci_config_set_class(config, class_code);
|
|
|
|
config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL;
|
|
|
|
|
|
|
|
config[0x2c] = vendor & 0xFF;
|
|
|
|
config[0x2d] = (vendor >> 8) & 0xFF;
|
|
|
|
config[0x2e] = vdev->device_id & 0xFF;
|
|
|
|
config[0x2f] = (vdev->device_id >> 8) & 0xFF;
|
|
|
|
|
|
|
|
config[0x3d] = 1;
|
|
|
|
|
2009-09-29 18:53:26 +02:00
|
|
|
if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, 1, 0)) {
|
2009-06-21 18:50:26 +02:00
|
|
|
pci_register_bar(&proxy->pci_dev, 1,
|
|
|
|
msix_bar_size(&proxy->pci_dev),
|
2009-10-30 13:21:03 +01:00
|
|
|
PCI_BASE_ADDRESS_SPACE_MEMORY,
|
2009-06-21 18:50:26 +02:00
|
|
|
msix_mmio_map);
|
|
|
|
} else
|
|
|
|
vdev->nvectors = 0;
|
|
|
|
|
2009-09-08 16:49:41 +02:00
|
|
|
proxy->pci_dev.config_write = virtio_write_config;
|
|
|
|
|
2009-06-21 18:50:26 +02:00
|
|
|
size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len;
|
2009-05-18 15:51:59 +02:00
|
|
|
if (size & (size-1))
|
|
|
|
size = 1 << qemu_fls(size);
|
|
|
|
|
2009-10-30 13:21:03 +01:00
|
|
|
pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO,
|
2009-05-18 15:51:59 +02:00
|
|
|
virtio_map);
|
|
|
|
|
|
|
|
virtio_bind_device(vdev, &virtio_pci_bindings, proxy);
|
|
|
|
}
|
|
|
|
|
2009-08-14 10:36:05 +02:00
|
|
|
static int virtio_blk_init_pci(PCIDevice *pci_dev)
|
2009-05-18 15:51:59 +02:00
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
|
|
|
|
VirtIODevice *vdev;
|
|
|
|
|
2009-07-15 13:48:23 +02:00
|
|
|
if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
|
|
|
|
proxy->class_code != PCI_CLASS_STORAGE_OTHER)
|
|
|
|
proxy->class_code = PCI_CLASS_STORAGE_SCSI;
|
2009-05-18 15:51:59 +02:00
|
|
|
|
qdev-ify virtio-blk.
First user of the new drive property. With this patch applied host
and guest config can be specified separately, like this:
-drive if=none,id=disk1,file=/path/to/disk.img
-device virtio-blk-pci,drive=disk1
You can set any property for virtio-blk-pci now. You can set the pci
address via addr=. You can switch the device into 0.10 compat mode
using class=0x0180. As this is per device you can have one 0.10 and one
0.11 virtio block device in a single virtual machine.
Old syntax continues to work. Internally it does the same as the two
lines above though. One side effect this has is a different
initialization order, which might result in a different pci address
being assigned by default.
Long term plan here is to have this working for all block devices, i.e.
once all scsi is properly qdev-ified you will be able to do something
like this:
-drive if=none,id=sda,file=/path/to/disk.img
-device lsi,id=lsi,addr=<pciaddr>
-device scsi-disk,drive=sda,bus=lsi.0,lun=<n>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Message-Id:
2009-07-31 12:25:41 +02:00
|
|
|
if (!proxy->dinfo) {
|
2009-08-14 10:36:07 +02:00
|
|
|
qemu_error("virtio-blk-pci: drive property not set\n");
|
2009-08-14 10:36:05 +02:00
|
|
|
return -1;
|
qdev-ify virtio-blk.
First user of the new drive property. With this patch applied host
and guest config can be specified separately, like this:
-drive if=none,id=disk1,file=/path/to/disk.img
-device virtio-blk-pci,drive=disk1
You can set any property for virtio-blk-pci now. You can set the pci
address via addr=. You can switch the device into 0.10 compat mode
using class=0x0180. As this is per device you can have one 0.10 and one
0.11 virtio block device in a single virtual machine.
Old syntax continues to work. Internally it does the same as the two
lines above though. One side effect this has is a different
initialization order, which might result in a different pci address
being assigned by default.
Long term plan here is to have this working for all block devices, i.e.
once all scsi is properly qdev-ified you will be able to do something
like this:
-drive if=none,id=sda,file=/path/to/disk.img
-device lsi,id=lsi,addr=<pciaddr>
-device scsi-disk,drive=sda,bus=lsi.0,lun=<n>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Message-Id:
2009-07-31 12:25:41 +02:00
|
|
|
}
|
|
|
|
vdev = virtio_blk_init(&pci_dev->qdev, proxy->dinfo);
|
2009-08-12 12:47:24 +02:00
|
|
|
vdev->nvectors = proxy->nvectors;
|
2009-05-18 15:51:59 +02:00
|
|
|
virtio_init_pci(proxy, vdev,
|
|
|
|
PCI_VENDOR_ID_REDHAT_QUMRANET,
|
2009-07-30 12:29:13 +02:00
|
|
|
PCI_DEVICE_ID_VIRTIO_BLOCK,
|
|
|
|
proxy->class_code, 0x00);
|
2009-08-12 12:47:24 +02:00
|
|
|
/* make the actual value visible */
|
|
|
|
proxy->nvectors = vdev->nvectors;
|
2009-08-14 10:36:05 +02:00
|
|
|
return 0;
|
2009-07-07 13:09:58 +02:00
|
|
|
}
|
|
|
|
|
2009-10-05 23:02:20 +02:00
|
|
|
static int virtio_exit_pci(PCIDevice *pci_dev)
|
|
|
|
{
|
|
|
|
return msix_uninit(pci_dev);
|
|
|
|
}
|
|
|
|
|
2009-09-25 21:42:46 +02:00
|
|
|
static int virtio_blk_exit_pci(PCIDevice *pci_dev)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
|
|
|
|
|
|
|
|
drive_uninit(proxy->dinfo);
|
2009-10-05 23:02:20 +02:00
|
|
|
return virtio_exit_pci(pci_dev);
|
2009-09-25 21:42:46 +02:00
|
|
|
}
|
|
|
|
|
2009-08-14 10:36:05 +02:00
|
|
|
static int virtio_console_init_pci(PCIDevice *pci_dev)
|
2009-07-07 13:09:58 +02:00
|
|
|
{
|
2009-07-15 13:48:24 +02:00
|
|
|
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
|
2009-07-30 12:29:13 +02:00
|
|
|
VirtIODevice *vdev;
|
|
|
|
|
2009-07-15 13:48:24 +02:00
|
|
|
if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
|
|
|
|
proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
|
|
|
|
proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */
|
|
|
|
proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER;
|
|
|
|
|
2009-07-30 12:29:13 +02:00
|
|
|
vdev = virtio_console_init(&pci_dev->qdev);
|
2009-09-29 12:21:04 +02:00
|
|
|
if (!vdev) {
|
|
|
|
return -1;
|
|
|
|
}
|
2009-07-30 12:29:13 +02:00
|
|
|
virtio_init_pci(proxy, vdev,
|
|
|
|
PCI_VENDOR_ID_REDHAT_QUMRANET,
|
|
|
|
PCI_DEVICE_ID_VIRTIO_CONSOLE,
|
|
|
|
proxy->class_code, 0x00);
|
2009-08-14 10:36:05 +02:00
|
|
|
return 0;
|
2009-05-18 15:51:59 +02:00
|
|
|
}
|
|
|
|
|
2009-08-14 10:36:05 +02:00
|
|
|
static int virtio_net_init_pci(PCIDevice *pci_dev)
|
2009-05-18 15:51:59 +02:00
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
|
|
|
|
VirtIODevice *vdev;
|
|
|
|
|
2009-10-21 15:25:35 +02:00
|
|
|
vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic);
|
2009-07-15 13:48:25 +02:00
|
|
|
|
2009-10-21 15:25:35 +02:00
|
|
|
vdev->nvectors = proxy->nvectors;
|
2009-05-18 15:51:59 +02:00
|
|
|
virtio_init_pci(proxy, vdev,
|
|
|
|
PCI_VENDOR_ID_REDHAT_QUMRANET,
|
|
|
|
PCI_DEVICE_ID_VIRTIO_NET,
|
|
|
|
PCI_CLASS_NETWORK_ETHERNET,
|
|
|
|
0x00);
|
2009-07-15 13:48:25 +02:00
|
|
|
|
|
|
|
/* make the actual value visible */
|
|
|
|
proxy->nvectors = vdev->nvectors;
|
2009-10-21 15:25:35 +02:00
|
|
|
|
|
|
|
if (!pci_dev->qdev.hotplugged) {
|
|
|
|
static int loaded = 0;
|
|
|
|
if (!loaded) {
|
|
|
|
rom_add_option("pxe-virtio.bin");
|
|
|
|
loaded = 1;
|
|
|
|
}
|
|
|
|
}
|
2009-08-14 10:36:05 +02:00
|
|
|
return 0;
|
2009-05-18 15:51:59 +02:00
|
|
|
}
|
|
|
|
|
2009-10-21 15:25:35 +02:00
|
|
|
static int virtio_net_exit_pci(PCIDevice *pci_dev)
|
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
|
|
|
|
|
|
|
|
virtio_net_exit(proxy->vdev);
|
|
|
|
return virtio_exit_pci(pci_dev);
|
|
|
|
}
|
|
|
|
|
2009-08-14 10:36:05 +02:00
|
|
|
static int virtio_balloon_init_pci(PCIDevice *pci_dev)
|
2009-05-18 15:51:59 +02:00
|
|
|
{
|
|
|
|
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
|
|
|
|
VirtIODevice *vdev;
|
|
|
|
|
|
|
|
vdev = virtio_balloon_init(&pci_dev->qdev);
|
|
|
|
virtio_init_pci(proxy, vdev,
|
|
|
|
PCI_VENDOR_ID_REDHAT_QUMRANET,
|
|
|
|
PCI_DEVICE_ID_VIRTIO_BALLOON,
|
|
|
|
PCI_CLASS_MEMORY_RAM,
|
|
|
|
0x00);
|
2009-08-14 10:36:05 +02:00
|
|
|
return 0;
|
2009-05-18 15:51:59 +02:00
|
|
|
}
|
|
|
|
|
2009-06-30 14:12:07 +02:00
|
|
|
static PCIDeviceInfo virtio_info[] = {
|
|
|
|
{
|
|
|
|
.qdev.name = "virtio-blk-pci",
|
|
|
|
.qdev.size = sizeof(VirtIOPCIProxy),
|
|
|
|
.init = virtio_blk_init_pci,
|
2009-09-25 21:42:46 +02:00
|
|
|
.exit = virtio_blk_exit_pci,
|
2009-07-15 13:48:23 +02:00
|
|
|
.qdev.props = (Property[]) {
|
2009-08-03 17:35:45 +02:00
|
|
|
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
|
|
|
|
DEFINE_PROP_DRIVE("drive", VirtIOPCIProxy, dinfo),
|
2009-08-12 12:47:24 +02:00
|
|
|
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
|
2009-08-03 17:35:45 +02:00
|
|
|
DEFINE_PROP_END_OF_LIST(),
|
2009-07-15 13:48:23 +02:00
|
|
|
},
|
2009-09-16 12:40:37 +02:00
|
|
|
.qdev.reset = virtio_pci_reset,
|
2009-06-30 14:12:07 +02:00
|
|
|
},{
|
2009-07-15 13:48:25 +02:00
|
|
|
.qdev.name = "virtio-net-pci",
|
|
|
|
.qdev.size = sizeof(VirtIOPCIProxy),
|
|
|
|
.init = virtio_net_init_pci,
|
2009-10-21 15:25:35 +02:00
|
|
|
.exit = virtio_net_exit_pci,
|
2009-07-15 13:48:25 +02:00
|
|
|
.qdev.props = (Property[]) {
|
2009-10-21 15:25:35 +02:00
|
|
|
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
|
|
|
|
DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic),
|
2009-08-03 17:35:45 +02:00
|
|
|
DEFINE_PROP_END_OF_LIST(),
|
2009-07-15 13:48:25 +02:00
|
|
|
},
|
2009-09-16 12:40:37 +02:00
|
|
|
.qdev.reset = virtio_pci_reset,
|
2009-06-30 14:12:07 +02:00
|
|
|
},{
|
|
|
|
.qdev.name = "virtio-console-pci",
|
|
|
|
.qdev.size = sizeof(VirtIOPCIProxy),
|
|
|
|
.init = virtio_console_init_pci,
|
2009-10-05 23:02:20 +02:00
|
|
|
.exit = virtio_exit_pci,
|
2009-07-15 13:48:24 +02:00
|
|
|
.qdev.props = (Property[]) {
|
2009-08-03 17:35:45 +02:00
|
|
|
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
|
|
|
|
DEFINE_PROP_END_OF_LIST(),
|
2009-07-15 13:48:24 +02:00
|
|
|
},
|
2009-09-16 12:40:37 +02:00
|
|
|
.qdev.reset = virtio_pci_reset,
|
2009-06-30 14:12:07 +02:00
|
|
|
},{
|
|
|
|
.qdev.name = "virtio-balloon-pci",
|
|
|
|
.qdev.size = sizeof(VirtIOPCIProxy),
|
|
|
|
.init = virtio_balloon_init_pci,
|
2009-10-05 23:02:20 +02:00
|
|
|
.exit = virtio_exit_pci,
|
2009-09-16 12:40:37 +02:00
|
|
|
.qdev.reset = virtio_pci_reset,
|
2009-06-30 14:12:07 +02:00
|
|
|
},{
|
|
|
|
/* end of list */
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2009-05-18 15:51:59 +02:00
|
|
|
static void virtio_pci_register_devices(void)
|
|
|
|
{
|
2009-06-30 14:12:07 +02:00
|
|
|
pci_qdev_register_many(virtio_info);
|
2009-05-18 15:51:59 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
device_init(virtio_pci_register_devices)
|