Revision 53c25cea
| b/Makefile.target | ||
|---|---|---|
| 489 | 489 |
gdbstub.o gdbstub-xml.o sysbus.o |
| 490 | 490 |
# virtio has to be here due to weird dependency between PCI and virtio-net. |
| 491 | 491 |
# need to fix this properly |
| 492 |
OBJS+=virtio.o virtio-blk.o virtio-balloon.o virtio-net.o virtio-console.o |
|
| 492 |
OBJS+=virtio.o virtio-pci.o |
|
| 493 |
OBJS+=virtio-blk.o virtio-balloon.o virtio-net.o virtio-console.o |
|
| 493 | 494 |
OBJS+=fw_cfg.o |
| 494 | 495 |
ifdef CONFIG_KVM |
| 495 | 496 |
OBJS+=kvm.o kvm-all.o |
| b/hw/pc.c | ||
|---|---|---|
| 1137 | 1137 |
int unit_id = 0; |
| 1138 | 1138 |
|
| 1139 | 1139 |
while ((index = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
|
| 1140 |
pci_create_simple(pci_bus, -1, "virtio-blk"); |
|
| 1140 |
pci_create_simple(pci_bus, -1, "virtio-blk-pci");
|
|
| 1141 | 1141 |
unit_id++; |
| 1142 | 1142 |
} |
| 1143 | 1143 |
} |
| 1144 | 1144 |
|
| 1145 | 1145 |
/* Add virtio balloon device */ |
| 1146 | 1146 |
if (pci_enabled) {
|
| 1147 |
pci_create_simple(pci_bus, -1, "virtio-balloon"); |
|
| 1147 |
pci_create_simple(pci_bus, -1, "virtio-balloon-pci");
|
|
| 1148 | 1148 |
} |
| 1149 | 1149 |
|
| 1150 | 1150 |
/* Add virtio console devices */ |
| 1151 | 1151 |
if (pci_enabled) {
|
| 1152 | 1152 |
for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
|
| 1153 | 1153 |
if (virtcon_hds[i]) {
|
| 1154 |
pci_create_simple(pci_bus, -1, "virtio-console"); |
|
| 1154 |
pci_create_simple(pci_bus, -1, "virtio-console-pci");
|
|
| 1155 | 1155 |
} |
| 1156 | 1156 |
} |
| 1157 | 1157 |
} |
| b/hw/pci-hotplug.c | ||
|---|---|---|
| 120 | 120 |
opaque = pci_create_simple(pci_bus, -1, "lsi53c895a"); |
| 121 | 121 |
break; |
| 122 | 122 |
case IF_VIRTIO: |
| 123 |
opaque = pci_create_simple(pci_bus, -1, "virtio-blk"); |
|
| 123 |
opaque = pci_create_simple(pci_bus, -1, "virtio-blk-pci");
|
|
| 124 | 124 |
qdev_init(opaque); |
| 125 | 125 |
break; |
| 126 | 126 |
} |
| b/hw/pci.c | ||
|---|---|---|
| 806 | 806 |
"rtl8139", |
| 807 | 807 |
"e1000", |
| 808 | 808 |
"pcnet", |
| 809 |
"virtio_net",
|
|
| 809 |
"virtio-net-pci",
|
|
| 810 | 810 |
NULL |
| 811 | 811 |
}; |
| 812 | 812 |
|
| b/hw/ppc440_bamboo.c | ||
|---|---|---|
| 111 | 111 |
|
| 112 | 112 |
/* Add virtio block devices. */ |
| 113 | 113 |
while ((i = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
|
| 114 |
pci_create_simple(pcibus, -1, "virtio-blk"); |
|
| 114 |
pci_create_simple(pcibus, -1, "virtio-blk-pci");
|
|
| 115 | 115 |
unit_id++; |
| 116 | 116 |
} |
| 117 | 117 |
|
| 118 | 118 |
/* Add virtio console devices */ |
| 119 | 119 |
for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
|
| 120 | 120 |
if (virtcon_hds[i]) {
|
| 121 |
pci_create_simple(pcibus, -1, "virtio-console"); |
|
| 121 |
pci_create_simple(pcibus, -1, "virtio-console-pci");
|
|
| 122 | 122 |
} |
| 123 | 123 |
} |
| 124 | 124 |
|
| b/hw/ppce500_mpc8544ds.c | ||
|---|---|---|
| 220 | 220 |
|
| 221 | 221 |
/* Add virtio block devices. */ |
| 222 | 222 |
while ((i = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
|
| 223 |
pci_create_simple(pci_bus, -1, "virtio-blk"); |
|
| 223 |
pci_create_simple(pci_bus, -1, "virtio-blk-pci");
|
|
| 224 | 224 |
unit_id++; |
| 225 | 225 |
} |
| 226 | 226 |
|
| b/hw/virtio-balloon.c | ||
|---|---|---|
| 169 | 169 |
return 0; |
| 170 | 170 |
} |
| 171 | 171 |
|
| 172 |
static void virtio_balloon_init(PCIDevice *pci_dev)
|
|
| 172 |
VirtIODevice *virtio_balloon_init(DeviceState *dev)
|
|
| 173 | 173 |
{
|
| 174 | 174 |
VirtIOBalloon *s; |
| 175 | 175 |
|
| 176 |
s = (VirtIOBalloon *)virtio_init_pci(pci_dev, "virtio-balloon", |
|
| 177 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 178 |
PCI_DEVICE_ID_VIRTIO_BALLOON, |
|
| 179 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 180 |
VIRTIO_ID_BALLOON, |
|
| 181 |
PCI_CLASS_MEMORY_RAM, 0x00, |
|
| 182 |
8); |
|
| 176 |
s = (VirtIOBalloon *)virtio_common_init("virtio-balloon",
|
|
| 177 |
VIRTIO_ID_BALLOON, |
|
| 178 |
8, sizeof(VirtIOBalloon)); |
|
| 183 | 179 |
|
| 184 | 180 |
s->vdev.get_config = virtio_balloon_get_config; |
| 185 | 181 |
s->vdev.set_config = virtio_balloon_set_config; |
| ... | ... | |
| 191 | 187 |
qemu_add_balloon_handler(virtio_balloon_to_target, s); |
| 192 | 188 |
|
| 193 | 189 |
register_savevm("virtio-balloon", -1, 1, virtio_balloon_save, virtio_balloon_load, s);
|
| 194 |
} |
|
| 195 | 190 |
|
| 196 |
static void virtio_balloon_register_devices(void) |
|
| 197 |
{
|
|
| 198 |
pci_qdev_register("virtio-balloon", sizeof(VirtIOBalloon),
|
|
| 199 |
virtio_balloon_init); |
|
| 191 |
return &s->vdev; |
|
| 200 | 192 |
} |
| 201 |
|
|
| 202 |
device_init(virtio_balloon_register_devices) |
|
| b/hw/virtio-blk.c | ||
|---|---|---|
| 348 | 348 |
return 0; |
| 349 | 349 |
} |
| 350 | 350 |
|
| 351 |
static void virtio_blk_init(PCIDevice *pci_dev)
|
|
| 351 |
VirtIODevice *virtio_blk_init(DeviceState *dev)
|
|
| 352 | 352 |
{
|
| 353 | 353 |
VirtIOBlock *s; |
| 354 | 354 |
int cylinders, heads, secs; |
| 355 | 355 |
static int virtio_blk_id; |
| 356 | 356 |
BlockDriverState *bs; |
| 357 | 357 |
|
| 358 |
s = (VirtIOBlock *)virtio_init_pci(pci_dev, "virtio-blk", |
|
| 359 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 360 |
PCI_DEVICE_ID_VIRTIO_BLOCK, |
|
| 361 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 362 |
VIRTIO_ID_BLOCK, |
|
| 363 |
PCI_CLASS_STORAGE_OTHER, 0x00, |
|
| 364 |
sizeof(struct virtio_blk_config)); |
|
| 358 |
s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
|
|
| 359 |
sizeof(struct virtio_blk_config), |
|
| 360 |
sizeof(VirtIOBlock)); |
|
| 365 | 361 |
|
| 366 |
bs = qdev_init_bdrv(&pci_dev->qdev, IF_VIRTIO);
|
|
| 362 |
bs = qdev_init_bdrv(dev, IF_VIRTIO); |
|
| 367 | 363 |
s->vdev.get_config = virtio_blk_update_config; |
| 368 | 364 |
s->vdev.get_features = virtio_blk_get_features; |
| 369 | 365 |
s->vdev.reset = virtio_blk_reset; |
| 370 | 366 |
s->bs = bs; |
| 371 | 367 |
s->rq = NULL; |
| 372 |
bs->private = &s->vdev.pci_dev;
|
|
| 368 |
bs->private = dev; |
|
| 373 | 369 |
bdrv_guess_geometry(s->bs, &cylinders, &heads, &secs); |
| 374 | 370 |
bdrv_set_geometry_hint(s->bs, cylinders, heads, secs); |
| 375 | 371 |
|
| ... | ... | |
| 378 | 374 |
qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s); |
| 379 | 375 |
register_savevm("virtio-blk", virtio_blk_id++, 2,
|
| 380 | 376 |
virtio_blk_save, virtio_blk_load, s); |
| 381 |
} |
|
| 382 | 377 |
|
| 383 |
static void virtio_blk_register_devices(void) |
|
| 384 |
{
|
|
| 385 |
pci_qdev_register("virtio-blk", sizeof(VirtIOBlock), virtio_blk_init);
|
|
| 378 |
return &s->vdev; |
|
| 386 | 379 |
} |
| 387 |
|
|
| 388 |
device_init(virtio_blk_register_devices) |
|
| b/hw/virtio-blk.h | ||
|---|---|---|
| 16 | 16 |
|
| 17 | 17 |
#include "virtio.h" |
| 18 | 18 |
#include "block.h" |
| 19 |
#include "pci.h" |
|
| 20 | 19 |
|
| 21 | 20 |
/* from Linux's linux/virtio_blk.h */ |
| 22 | 21 |
|
| b/hw/virtio-console.c | ||
|---|---|---|
| 123 | 123 |
return 0; |
| 124 | 124 |
} |
| 125 | 125 |
|
| 126 |
static void virtio_console_init(PCIDevice *pci_dev)
|
|
| 126 |
VirtIODevice *virtio_console_init(DeviceState *dev)
|
|
| 127 | 127 |
{
|
| 128 | 128 |
VirtIOConsole *s; |
| 129 |
s = (VirtIOConsole *)virtio_init_pci(pci_dev, "virtio-console", |
|
| 130 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 131 |
PCI_DEVICE_ID_VIRTIO_CONSOLE, |
|
| 132 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 133 |
VIRTIO_ID_CONSOLE, |
|
| 134 |
PCI_CLASS_DISPLAY_OTHER, 0x00, |
|
| 135 |
0); |
|
| 129 |
s = (VirtIOConsole *)virtio_common_init("virtio-console",
|
|
| 130 |
VIRTIO_ID_CONSOLE, |
|
| 131 |
0, sizeof(VirtIOConsole)); |
|
| 136 | 132 |
s->vdev.get_features = virtio_console_get_features; |
| 137 | 133 |
|
| 138 | 134 |
s->ivq = virtio_add_queue(&s->vdev, 128, virtio_console_handle_input); |
| 139 | 135 |
s->dvq = virtio_add_queue(&s->vdev, 128, virtio_console_handle_output); |
| 140 | 136 |
|
| 141 |
s->chr = qdev_init_chardev(&pci_dev->qdev);
|
|
| 137 |
s->chr = qdev_init_chardev(dev); |
|
| 142 | 138 |
qemu_chr_add_handlers(s->chr, vcon_can_read, vcon_read, vcon_event, s); |
| 143 | 139 |
|
| 144 | 140 |
register_savevm("virtio-console", -1, 1, virtio_console_save, virtio_console_load, s);
|
| 145 |
} |
|
| 146 | 141 |
|
| 147 |
static void virtio_console_register_devices(void) |
|
| 148 |
{
|
|
| 149 |
pci_qdev_register("virtio-console", sizeof(VirtIOConsole),
|
|
| 150 |
virtio_console_init); |
|
| 142 |
return &s->vdev; |
|
| 151 | 143 |
} |
| 152 |
|
|
| 153 |
device_init(virtio_console_register_devices) |
|
| b/hw/virtio-net.c | ||
|---|---|---|
| 585 | 585 |
virtio_cleanup(&n->vdev); |
| 586 | 586 |
} |
| 587 | 587 |
|
| 588 |
static void virtio_net_init(PCIDevice *pci_dev)
|
|
| 588 |
VirtIODevice *virtio_net_init(DeviceState *dev)
|
|
| 589 | 589 |
{
|
| 590 | 590 |
VirtIONet *n; |
| 591 | 591 |
static int virtio_net_id; |
| 592 | 592 |
|
| 593 |
n = (VirtIONet *)virtio_init_pci(pci_dev, "virtio-net", |
|
| 594 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 595 |
PCI_DEVICE_ID_VIRTIO_NET, |
|
| 596 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 597 |
VIRTIO_ID_NET, |
|
| 598 |
PCI_CLASS_NETWORK_ETHERNET, 0x00, |
|
| 599 |
sizeof(struct virtio_net_config)); |
|
| 593 |
n = (VirtIONet *)virtio_common_init("virtio-net", VIRTIO_ID_NET,
|
|
| 594 |
sizeof(struct virtio_net_config), |
|
| 595 |
sizeof(VirtIONet)); |
|
| 600 | 596 |
|
| 601 | 597 |
n->vdev.get_config = virtio_net_get_config; |
| 602 | 598 |
n->vdev.set_config = virtio_net_set_config; |
| ... | ... | |
| 607 | 603 |
n->rx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_rx); |
| 608 | 604 |
n->tx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_tx); |
| 609 | 605 |
n->ctrl_vq = virtio_add_queue(&n->vdev, 16, virtio_net_handle_ctrl); |
| 610 |
qdev_get_macaddr(&pci_dev->qdev, n->mac);
|
|
| 606 |
qdev_get_macaddr(dev, n->mac); |
|
| 611 | 607 |
n->status = VIRTIO_NET_S_LINK_UP; |
| 612 |
n->vc = qdev_get_vlan_client(&pci_dev->qdev,
|
|
| 608 |
n->vc = qdev_get_vlan_client(dev, |
|
| 613 | 609 |
virtio_net_receive, |
| 614 | 610 |
virtio_net_can_receive, |
| 615 | 611 |
virtio_net_cleanup, n); |
| ... | ... | |
| 628 | 624 |
|
| 629 | 625 |
register_savevm("virtio-net", virtio_net_id++, VIRTIO_NET_VM_VERSION,
|
| 630 | 626 |
virtio_net_save, virtio_net_load, n); |
| 631 |
} |
|
| 632 | 627 |
|
| 633 |
static void virtio_net_register_devices(void) |
|
| 634 |
{
|
|
| 635 |
pci_qdev_register("virtio_net", sizeof(VirtIONet), virtio_net_init);
|
|
| 628 |
return &n->vdev; |
|
| 636 | 629 |
} |
| 637 |
|
|
| 638 |
device_init(virtio_net_register_devices) |
|
| b/hw/virtio-pci.c | ||
|---|---|---|
| 1 |
/* |
|
| 2 |
* Virtio PCI Bindings |
|
| 3 |
* |
|
| 4 |
* Copyright IBM, Corp. 2007 |
|
| 5 |
* Copyright (c) 2009 CodeSourcery |
|
| 6 |
* |
|
| 7 |
* Authors: |
|
| 8 |
* Anthony Liguori <aliguori@us.ibm.com> |
|
| 9 |
* Paul Brook <paul@codesourcery.com> |
|
| 10 |
* |
|
| 11 |
* This work is licensed under the terms of the GNU GPL, version 2. See |
|
| 12 |
* the COPYING file in the top-level directory. |
|
| 13 |
* |
|
| 14 |
*/ |
|
| 15 |
|
|
| 16 |
#include <inttypes.h> |
|
| 17 |
|
|
| 18 |
#include "virtio.h" |
|
| 19 |
#include "pci.h" |
|
| 20 |
#include "sysemu.h" |
|
| 21 |
|
|
| 22 |
/* from Linux's linux/virtio_pci.h */ |
|
| 23 |
|
|
| 24 |
/* A 32-bit r/o bitmask of the features supported by the host */ |
|
| 25 |
#define VIRTIO_PCI_HOST_FEATURES 0 |
|
| 26 |
|
|
| 27 |
/* A 32-bit r/w bitmask of features activated by the guest */ |
|
| 28 |
#define VIRTIO_PCI_GUEST_FEATURES 4 |
|
| 29 |
|
|
| 30 |
/* A 32-bit r/w PFN for the currently selected queue */ |
|
| 31 |
#define VIRTIO_PCI_QUEUE_PFN 8 |
|
| 32 |
|
|
| 33 |
/* A 16-bit r/o queue size for the currently selected queue */ |
|
| 34 |
#define VIRTIO_PCI_QUEUE_NUM 12 |
|
| 35 |
|
|
| 36 |
/* A 16-bit r/w queue selector */ |
|
| 37 |
#define VIRTIO_PCI_QUEUE_SEL 14 |
|
| 38 |
|
|
| 39 |
/* A 16-bit r/w queue notifier */ |
|
| 40 |
#define VIRTIO_PCI_QUEUE_NOTIFY 16 |
|
| 41 |
|
|
| 42 |
/* An 8-bit device status register. */ |
|
| 43 |
#define VIRTIO_PCI_STATUS 18 |
|
| 44 |
|
|
| 45 |
/* An 8-bit r/o interrupt status register. Reading the value will return the |
|
| 46 |
* current contents of the ISR and will also clear it. This is effectively |
|
| 47 |
* a read-and-acknowledge. */ |
|
| 48 |
#define VIRTIO_PCI_ISR 19 |
|
| 49 |
|
|
| 50 |
#define VIRTIO_PCI_CONFIG 20 |
|
| 51 |
|
|
| 52 |
/* Virtio ABI version, if we increment this, we break the guest driver. */ |
|
| 53 |
#define VIRTIO_PCI_ABI_VERSION 0 |
|
| 54 |
|
|
| 55 |
/* How many bits to shift physical queue address written to QUEUE_PFN. |
|
| 56 |
* 12 is historical, and due to x86 page size. */ |
|
| 57 |
#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 |
|
| 58 |
|
|
| 59 |
/* QEMU doesn't strictly need write barriers since everything runs in |
|
| 60 |
* lock-step. We'll leave the calls to wmb() in though to make it obvious for |
|
| 61 |
* KVM or if kqemu gets SMP support. |
|
| 62 |
*/ |
|
| 63 |
#define wmb() do { } while (0)
|
|
| 64 |
|
|
| 65 |
/* PCI bindings. */ |
|
| 66 |
|
|
| 67 |
typedef struct {
|
|
| 68 |
PCIDevice pci_dev; |
|
| 69 |
VirtIODevice *vdev; |
|
| 70 |
uint32_t addr; |
|
| 71 |
|
|
| 72 |
uint16_t vendor; |
|
| 73 |
uint16_t device; |
|
| 74 |
uint16_t subvendor; |
|
| 75 |
uint16_t class_code; |
|
| 76 |
uint8_t pif; |
|
| 77 |
} VirtIOPCIProxy; |
|
| 78 |
|
|
| 79 |
/* virtio device */ |
|
| 80 |
|
|
| 81 |
static void virtio_pci_update_irq(void *opaque) |
|
| 82 |
{
|
|
| 83 |
VirtIOPCIProxy *proxy = opaque; |
|
| 84 |
|
|
| 85 |
qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); |
|
| 86 |
} |
|
| 87 |
|
|
| 88 |
static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
|
| 89 |
{
|
|
| 90 |
VirtIOPCIProxy *proxy = opaque; |
|
| 91 |
VirtIODevice *vdev = proxy->vdev; |
|
| 92 |
target_phys_addr_t pa; |
|
| 93 |
|
|
| 94 |
addr -= proxy->addr; |
|
| 95 |
|
|
| 96 |
switch (addr) {
|
|
| 97 |
case VIRTIO_PCI_GUEST_FEATURES: |
|
| 98 |
/* Guest does not negotiate properly? We have to assume nothing. */ |
|
| 99 |
if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
|
|
| 100 |
if (vdev->bad_features) |
|
| 101 |
val = vdev->bad_features(vdev); |
|
| 102 |
else |
|
| 103 |
val = 0; |
|
| 104 |
} |
|
| 105 |
if (vdev->set_features) |
|
| 106 |
vdev->set_features(vdev, val); |
|
| 107 |
vdev->features = val; |
|
| 108 |
break; |
|
| 109 |
case VIRTIO_PCI_QUEUE_PFN: |
|
| 110 |
pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
|
| 111 |
virtio_queue_set_addr(vdev, vdev->queue_sel, pa); |
|
| 112 |
break; |
|
| 113 |
case VIRTIO_PCI_QUEUE_SEL: |
|
| 114 |
if (val < VIRTIO_PCI_QUEUE_MAX) |
|
| 115 |
vdev->queue_sel = val; |
|
| 116 |
break; |
|
| 117 |
case VIRTIO_PCI_QUEUE_NOTIFY: |
|
| 118 |
virtio_queue_notify(vdev, val); |
|
| 119 |
break; |
|
| 120 |
case VIRTIO_PCI_STATUS: |
|
| 121 |
vdev->status = val & 0xFF; |
|
| 122 |
if (vdev->status == 0) |
|
| 123 |
virtio_reset(vdev); |
|
| 124 |
break; |
|
| 125 |
} |
|
| 126 |
} |
|
| 127 |
|
|
| 128 |
static uint32_t virtio_ioport_read(void *opaque, uint32_t addr) |
|
| 129 |
{
|
|
| 130 |
VirtIOPCIProxy *proxy = opaque; |
|
| 131 |
VirtIODevice *vdev = proxy->vdev; |
|
| 132 |
uint32_t ret = 0xFFFFFFFF; |
|
| 133 |
|
|
| 134 |
addr -= proxy->addr; |
|
| 135 |
|
|
| 136 |
switch (addr) {
|
|
| 137 |
case VIRTIO_PCI_HOST_FEATURES: |
|
| 138 |
ret = vdev->get_features(vdev); |
|
| 139 |
ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY) | (1 << VIRTIO_F_BAD_FEATURE); |
|
| 140 |
break; |
|
| 141 |
case VIRTIO_PCI_GUEST_FEATURES: |
|
| 142 |
ret = vdev->features; |
|
| 143 |
break; |
|
| 144 |
case VIRTIO_PCI_QUEUE_PFN: |
|
| 145 |
ret = virtio_queue_get_addr(vdev, vdev->queue_sel) |
|
| 146 |
>> VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
|
| 147 |
break; |
|
| 148 |
case VIRTIO_PCI_QUEUE_NUM: |
|
| 149 |
ret = virtio_queue_get_num(vdev, vdev->queue_sel); |
|
| 150 |
break; |
|
| 151 |
case VIRTIO_PCI_QUEUE_SEL: |
|
| 152 |
ret = vdev->queue_sel; |
|
| 153 |
break; |
|
| 154 |
case VIRTIO_PCI_STATUS: |
|
| 155 |
ret = vdev->status; |
|
| 156 |
break; |
|
| 157 |
case VIRTIO_PCI_ISR: |
|
| 158 |
/* reading from the ISR also clears it. */ |
|
| 159 |
ret = vdev->isr; |
|
| 160 |
vdev->isr = 0; |
|
| 161 |
virtio_update_irq(vdev); |
|
| 162 |
break; |
|
| 163 |
default: |
|
| 164 |
break; |
|
| 165 |
} |
|
| 166 |
|
|
| 167 |
return ret; |
|
| 168 |
} |
|
| 169 |
|
|
| 170 |
static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr) |
|
| 171 |
{
|
|
| 172 |
VirtIOPCIProxy *proxy = opaque; |
|
| 173 |
addr -= proxy->addr + VIRTIO_PCI_CONFIG; |
|
| 174 |
return virtio_config_readb(proxy->vdev, addr); |
|
| 175 |
} |
|
| 176 |
|
|
| 177 |
static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr) |
|
| 178 |
{
|
|
| 179 |
VirtIOPCIProxy *proxy = opaque; |
|
| 180 |
addr -= proxy->addr + VIRTIO_PCI_CONFIG; |
|
| 181 |
return virtio_config_readw(proxy->vdev, addr); |
|
| 182 |
} |
|
| 183 |
|
|
| 184 |
static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr) |
|
| 185 |
{
|
|
| 186 |
VirtIOPCIProxy *proxy = opaque; |
|
| 187 |
addr -= proxy->addr + VIRTIO_PCI_CONFIG; |
|
| 188 |
return virtio_config_readl(proxy->vdev, addr); |
|
| 189 |
} |
|
| 190 |
|
|
| 191 |
static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val) |
|
| 192 |
{
|
|
| 193 |
VirtIOPCIProxy *proxy = opaque; |
|
| 194 |
addr -= proxy->addr + VIRTIO_PCI_CONFIG; |
|
| 195 |
virtio_config_writeb(proxy->vdev, addr, val); |
|
| 196 |
} |
|
| 197 |
|
|
| 198 |
static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val) |
|
| 199 |
{
|
|
| 200 |
VirtIOPCIProxy *proxy = opaque; |
|
| 201 |
addr -= proxy->addr + VIRTIO_PCI_CONFIG; |
|
| 202 |
virtio_config_writew(proxy->vdev, addr, val); |
|
| 203 |
} |
|
| 204 |
|
|
| 205 |
static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val) |
|
| 206 |
{
|
|
| 207 |
VirtIOPCIProxy *proxy = opaque; |
|
| 208 |
addr -= proxy->addr + VIRTIO_PCI_CONFIG; |
|
| 209 |
virtio_config_writel(proxy->vdev, addr, val); |
|
| 210 |
} |
|
| 211 |
|
|
| 212 |
static void virtio_map(PCIDevice *pci_dev, int region_num, |
|
| 213 |
uint32_t addr, uint32_t size, int type) |
|
| 214 |
{
|
|
| 215 |
VirtIOPCIProxy *proxy = container_of(pci_dev, VirtIOPCIProxy, pci_dev); |
|
| 216 |
VirtIODevice *vdev = proxy->vdev; |
|
| 217 |
int i; |
|
| 218 |
|
|
| 219 |
proxy->addr = addr; |
|
| 220 |
for (i = 0; i < 3; i++) {
|
|
| 221 |
register_ioport_write(addr, VIRTIO_PCI_CONFIG, 1 << i, |
|
| 222 |
virtio_ioport_write, proxy); |
|
| 223 |
register_ioport_read(addr, VIRTIO_PCI_CONFIG, 1 << i, |
|
| 224 |
virtio_ioport_read, proxy); |
|
| 225 |
} |
|
| 226 |
|
|
| 227 |
if (vdev->config_len) {
|
|
| 228 |
register_ioport_write(addr + VIRTIO_PCI_CONFIG, vdev->config_len, 1, |
|
| 229 |
virtio_pci_config_writeb, proxy); |
|
| 230 |
register_ioport_write(addr + VIRTIO_PCI_CONFIG, vdev->config_len, 2, |
|
| 231 |
virtio_pci_config_writew, proxy); |
|
| 232 |
register_ioport_write(addr + VIRTIO_PCI_CONFIG, vdev->config_len, 4, |
|
| 233 |
virtio_pci_config_writel, proxy); |
|
| 234 |
register_ioport_read(addr + VIRTIO_PCI_CONFIG, vdev->config_len, 1, |
|
| 235 |
virtio_pci_config_readb, proxy); |
|
| 236 |
register_ioport_read(addr + VIRTIO_PCI_CONFIG, vdev->config_len, 2, |
|
| 237 |
virtio_pci_config_readw, proxy); |
|
| 238 |
register_ioport_read(addr + VIRTIO_PCI_CONFIG, vdev->config_len, 4, |
|
| 239 |
virtio_pci_config_readl, proxy); |
|
| 240 |
|
|
| 241 |
vdev->get_config(vdev, vdev->config); |
|
| 242 |
} |
|
| 243 |
} |
|
| 244 |
|
|
| 245 |
static const VirtIOBindings virtio_pci_bindings = {
|
|
| 246 |
.update_irq = virtio_pci_update_irq |
|
| 247 |
}; |
|
| 248 |
|
|
| 249 |
static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev, |
|
| 250 |
uint16_t vendor, uint16_t device, |
|
| 251 |
uint16_t class_code, uint8_t pif) |
|
| 252 |
{
|
|
| 253 |
uint8_t *config; |
|
| 254 |
uint32_t size; |
|
| 255 |
|
|
| 256 |
proxy->vdev = vdev; |
|
| 257 |
|
|
| 258 |
config = proxy->pci_dev.config; |
|
| 259 |
pci_config_set_vendor_id(config, vendor); |
|
| 260 |
pci_config_set_device_id(config, device); |
|
| 261 |
|
|
| 262 |
config[0x08] = VIRTIO_PCI_ABI_VERSION; |
|
| 263 |
|
|
| 264 |
config[0x09] = pif; |
|
| 265 |
pci_config_set_class(config, class_code); |
|
| 266 |
config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; |
|
| 267 |
|
|
| 268 |
config[0x2c] = vendor & 0xFF; |
|
| 269 |
config[0x2d] = (vendor >> 8) & 0xFF; |
|
| 270 |
config[0x2e] = vdev->device_id & 0xFF; |
|
| 271 |
config[0x2f] = (vdev->device_id >> 8) & 0xFF; |
|
| 272 |
|
|
| 273 |
config[0x3d] = 1; |
|
| 274 |
|
|
| 275 |
size = 20 + vdev->config_len; |
|
| 276 |
if (size & (size-1)) |
|
| 277 |
size = 1 << qemu_fls(size); |
|
| 278 |
|
|
| 279 |
pci_register_io_region(&proxy->pci_dev, 0, size, PCI_ADDRESS_SPACE_IO, |
|
| 280 |
virtio_map); |
|
| 281 |
|
|
| 282 |
virtio_bind_device(vdev, &virtio_pci_bindings, proxy); |
|
| 283 |
} |
|
| 284 |
|
|
| 285 |
static void virtio_blk_init_pci(PCIDevice *pci_dev) |
|
| 286 |
{
|
|
| 287 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
|
| 288 |
VirtIODevice *vdev; |
|
| 289 |
|
|
| 290 |
vdev = virtio_blk_init(&pci_dev->qdev); |
|
| 291 |
virtio_init_pci(proxy, vdev, |
|
| 292 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 293 |
PCI_DEVICE_ID_VIRTIO_BLOCK, |
|
| 294 |
PCI_CLASS_STORAGE_OTHER, |
|
| 295 |
0x00); |
|
| 296 |
} |
|
| 297 |
|
|
| 298 |
static void virtio_console_init_pci(PCIDevice *pci_dev) |
|
| 299 |
{
|
|
| 300 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
|
| 301 |
VirtIODevice *vdev; |
|
| 302 |
|
|
| 303 |
vdev = virtio_console_init(&pci_dev->qdev); |
|
| 304 |
virtio_init_pci(proxy, vdev, |
|
| 305 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 306 |
PCI_DEVICE_ID_VIRTIO_CONSOLE, |
|
| 307 |
PCI_CLASS_DISPLAY_OTHER, |
|
| 308 |
0x00); |
|
| 309 |
} |
|
| 310 |
|
|
| 311 |
static void virtio_net_init_pci(PCIDevice *pci_dev) |
|
| 312 |
{
|
|
| 313 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
|
| 314 |
VirtIODevice *vdev; |
|
| 315 |
|
|
| 316 |
vdev = virtio_net_init(&pci_dev->qdev); |
|
| 317 |
virtio_init_pci(proxy, vdev, |
|
| 318 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 319 |
PCI_DEVICE_ID_VIRTIO_NET, |
|
| 320 |
PCI_CLASS_NETWORK_ETHERNET, |
|
| 321 |
0x00); |
|
| 322 |
} |
|
| 323 |
|
|
| 324 |
static void virtio_balloon_init_pci(PCIDevice *pci_dev) |
|
| 325 |
{
|
|
| 326 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
|
| 327 |
VirtIODevice *vdev; |
|
| 328 |
|
|
| 329 |
vdev = virtio_balloon_init(&pci_dev->qdev); |
|
| 330 |
virtio_init_pci(proxy, vdev, |
|
| 331 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
|
| 332 |
PCI_DEVICE_ID_VIRTIO_BALLOON, |
|
| 333 |
PCI_CLASS_MEMORY_RAM, |
|
| 334 |
0x00); |
|
| 335 |
} |
|
| 336 |
|
|
| 337 |
static void virtio_pci_register_devices(void) |
|
| 338 |
{
|
|
| 339 |
pci_qdev_register("virtio-blk-pci", sizeof(VirtIOPCIProxy),
|
|
| 340 |
virtio_blk_init_pci); |
|
| 341 |
pci_qdev_register("virtio-net-pci", sizeof(VirtIOPCIProxy),
|
|
| 342 |
virtio_net_init_pci); |
|
| 343 |
pci_qdev_register("virtio-console-pci", sizeof(VirtIOPCIProxy),
|
|
| 344 |
virtio_console_init_pci); |
|
| 345 |
pci_qdev_register("virtio-balloon-pci", sizeof(VirtIOPCIProxy),
|
|
| 346 |
virtio_balloon_init_pci); |
|
| 347 |
} |
|
| 348 |
|
|
| 349 |
device_init(virtio_pci_register_devices) |
|
| b/hw/virtio.c | ||
|---|---|---|
| 16 | 16 |
#include "virtio.h" |
| 17 | 17 |
#include "sysemu.h" |
| 18 | 18 |
|
| 19 |
/* from Linux's linux/virtio_pci.h */ |
|
| 20 |
|
|
| 21 |
/* A 32-bit r/o bitmask of the features supported by the host */ |
|
| 22 |
#define VIRTIO_PCI_HOST_FEATURES 0 |
|
| 23 |
|
|
| 24 |
/* A 32-bit r/w bitmask of features activated by the guest */ |
|
| 25 |
#define VIRTIO_PCI_GUEST_FEATURES 4 |
|
| 26 |
|
|
| 27 |
/* A 32-bit r/w PFN for the currently selected queue */ |
|
| 28 |
#define VIRTIO_PCI_QUEUE_PFN 8 |
|
| 29 |
|
|
| 30 |
/* A 16-bit r/o queue size for the currently selected queue */ |
|
| 31 |
#define VIRTIO_PCI_QUEUE_NUM 12 |
|
| 32 |
|
|
| 33 |
/* A 16-bit r/w queue selector */ |
|
| 34 |
#define VIRTIO_PCI_QUEUE_SEL 14 |
|
| 35 |
|
|
| 36 |
/* A 16-bit r/w queue notifier */ |
|
| 37 |
#define VIRTIO_PCI_QUEUE_NOTIFY 16 |
|
| 38 |
|
|
| 39 |
/* An 8-bit device status register. */ |
|
| 40 |
#define VIRTIO_PCI_STATUS 18 |
|
| 41 |
|
|
| 42 |
/* An 8-bit r/o interrupt status register. Reading the value will return the |
|
| 43 |
* current contents of the ISR and will also clear it. This is effectively |
|
| 44 |
* a read-and-acknowledge. */ |
|
| 45 |
#define VIRTIO_PCI_ISR 19 |
|
| 46 |
|
|
| 47 |
#define VIRTIO_PCI_CONFIG 20 |
|
| 48 |
|
|
| 49 |
/* Virtio ABI version, if we increment this, we break the guest driver. */ |
|
| 50 |
#define VIRTIO_PCI_ABI_VERSION 0 |
|
| 51 |
|
|
| 52 |
/* How many bits to shift physical queue address written to QUEUE_PFN. |
|
| 53 |
* 12 is historical, and due to x86 page size. */ |
|
| 54 |
#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 |
|
| 55 |
|
|
| 56 | 19 |
/* The alignment to use between consumer and producer parts of vring. |
| 57 | 20 |
* x86 pagesize again. */ |
| 58 | 21 |
#define VIRTIO_PCI_VRING_ALIGN 4096 |
| ... | ... | |
| 102 | 65 |
struct VirtQueue |
| 103 | 66 |
{
|
| 104 | 67 |
VRing vring; |
| 105 |
uint32_t pfn;
|
|
| 68 |
target_phys_addr_t pa;
|
|
| 106 | 69 |
uint16_t last_avail_idx; |
| 107 | 70 |
int inuse; |
| 108 | 71 |
void (*handle_output)(VirtIODevice *vdev, VirtQueue *vq); |
| ... | ... | |
| 111 | 74 |
#define VIRTIO_PCI_QUEUE_MAX 16 |
| 112 | 75 |
|
| 113 | 76 |
/* virt queue functions */ |
| 114 |
static void virtqueue_init(VirtQueue *vq, target_phys_addr_t pa)
|
|
| 77 |
static void virtqueue_init(VirtQueue *vq) |
|
| 115 | 78 |
{
|
| 79 |
target_phys_addr_t pa = vq->pa; |
|
| 80 |
|
|
| 116 | 81 |
vq->vring.desc = pa; |
| 117 | 82 |
vq->vring.avail = pa + vq->vring.num * sizeof(VRingDesc); |
| 118 | 83 |
vq->vring.used = vring_align(vq->vring.avail + |
| ... | ... | |
| 409 | 374 |
|
| 410 | 375 |
/* virtio device */ |
| 411 | 376 |
|
| 412 |
static VirtIODevice *to_virtio_device(PCIDevice *pci_dev)
|
|
| 377 |
void virtio_update_irq(VirtIODevice *vdev)
|
|
| 413 | 378 |
{
|
| 414 |
return (VirtIODevice *)pci_dev; |
|
| 415 |
} |
|
| 416 |
|
|
| 417 |
static void virtio_update_irq(VirtIODevice *vdev) |
|
| 418 |
{
|
|
| 419 |
qemu_set_irq(vdev->pci_dev.irq[0], vdev->isr & 1); |
|
| 379 |
if (vdev->binding->update_irq) {
|
|
| 380 |
vdev->binding->update_irq(vdev->binding_opaque); |
|
| 381 |
} |
|
| 420 | 382 |
} |
| 421 | 383 |
|
| 422 |
static void virtio_reset(void *opaque)
|
|
| 384 |
void virtio_reset(void *opaque) |
|
| 423 | 385 |
{
|
| 424 | 386 |
VirtIODevice *vdev = opaque; |
| 425 | 387 |
int i; |
| ... | ... | |
| 438 | 400 |
vdev->vq[i].vring.avail = 0; |
| 439 | 401 |
vdev->vq[i].vring.used = 0; |
| 440 | 402 |
vdev->vq[i].last_avail_idx = 0; |
| 441 |
vdev->vq[i].pfn = 0;
|
|
| 403 |
vdev->vq[i].pa = 0;
|
|
| 442 | 404 |
} |
| 443 | 405 |
} |
| 444 | 406 |
|
| 445 |
static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
|
| 446 |
{
|
|
| 447 |
VirtIODevice *vdev = to_virtio_device(opaque); |
|
| 448 |
ram_addr_t pa; |
|
| 449 |
|
|
| 450 |
addr -= vdev->addr; |
|
| 451 |
|
|
| 452 |
switch (addr) {
|
|
| 453 |
case VIRTIO_PCI_GUEST_FEATURES: |
|
| 454 |
/* Guest does not negotiate properly? We have to assume nothing. */ |
|
| 455 |
if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
|
|
| 456 |
if (vdev->bad_features) |
|
| 457 |
val = vdev->bad_features(vdev); |
|
| 458 |
else |
|
| 459 |
val = 0; |
|
| 460 |
} |
|
| 461 |
if (vdev->set_features) |
|
| 462 |
vdev->set_features(vdev, val); |
|
| 463 |
vdev->features = val; |
|
| 464 |
break; |
|
| 465 |
case VIRTIO_PCI_QUEUE_PFN: |
|
| 466 |
pa = (ram_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
|
| 467 |
vdev->vq[vdev->queue_sel].pfn = val; |
|
| 468 |
if (pa == 0) {
|
|
| 469 |
virtio_reset(vdev); |
|
| 470 |
} else {
|
|
| 471 |
virtqueue_init(&vdev->vq[vdev->queue_sel], pa); |
|
| 472 |
} |
|
| 473 |
break; |
|
| 474 |
case VIRTIO_PCI_QUEUE_SEL: |
|
| 475 |
if (val < VIRTIO_PCI_QUEUE_MAX) |
|
| 476 |
vdev->queue_sel = val; |
|
| 477 |
break; |
|
| 478 |
case VIRTIO_PCI_QUEUE_NOTIFY: |
|
| 479 |
if (val < VIRTIO_PCI_QUEUE_MAX && vdev->vq[val].vring.desc) |
|
| 480 |
vdev->vq[val].handle_output(vdev, &vdev->vq[val]); |
|
| 481 |
break; |
|
| 482 |
case VIRTIO_PCI_STATUS: |
|
| 483 |
vdev->status = val & 0xFF; |
|
| 484 |
if (vdev->status == 0) |
|
| 485 |
virtio_reset(vdev); |
|
| 486 |
break; |
|
| 487 |
} |
|
| 488 |
} |
|
| 489 |
|
|
| 490 |
static uint32_t virtio_ioport_read(void *opaque, uint32_t addr) |
|
| 491 |
{
|
|
| 492 |
VirtIODevice *vdev = to_virtio_device(opaque); |
|
| 493 |
uint32_t ret = 0xFFFFFFFF; |
|
| 494 |
|
|
| 495 |
addr -= vdev->addr; |
|
| 496 |
|
|
| 497 |
switch (addr) {
|
|
| 498 |
case VIRTIO_PCI_HOST_FEATURES: |
|
| 499 |
ret = vdev->get_features(vdev); |
|
| 500 |
ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY) | (1 << VIRTIO_F_BAD_FEATURE); |
|
| 501 |
break; |
|
| 502 |
case VIRTIO_PCI_GUEST_FEATURES: |
|
| 503 |
ret = vdev->features; |
|
| 504 |
break; |
|
| 505 |
case VIRTIO_PCI_QUEUE_PFN: |
|
| 506 |
ret = vdev->vq[vdev->queue_sel].pfn; |
|
| 507 |
break; |
|
| 508 |
case VIRTIO_PCI_QUEUE_NUM: |
|
| 509 |
ret = vdev->vq[vdev->queue_sel].vring.num; |
|
| 510 |
break; |
|
| 511 |
case VIRTIO_PCI_QUEUE_SEL: |
|
| 512 |
ret = vdev->queue_sel; |
|
| 513 |
break; |
|
| 514 |
case VIRTIO_PCI_STATUS: |
|
| 515 |
ret = vdev->status; |
|
| 516 |
break; |
|
| 517 |
case VIRTIO_PCI_ISR: |
|
| 518 |
/* reading from the ISR also clears it. */ |
|
| 519 |
ret = vdev->isr; |
|
| 520 |
vdev->isr = 0; |
|
| 521 |
virtio_update_irq(vdev); |
|
| 522 |
break; |
|
| 523 |
default: |
|
| 524 |
break; |
|
| 525 |
} |
|
| 526 |
|
|
| 527 |
return ret; |
|
| 528 |
} |
|
| 529 |
|
|
| 530 |
static uint32_t virtio_config_readb(void *opaque, uint32_t addr) |
|
| 407 |
uint32_t virtio_config_readb(VirtIODevice *vdev, uint32_t addr) |
|
| 531 | 408 |
{
|
| 532 |
VirtIODevice *vdev = opaque; |
|
| 533 | 409 |
uint8_t val; |
| 534 | 410 |
|
| 535 | 411 |
vdev->get_config(vdev, vdev->config); |
| 536 | 412 |
|
| 537 |
addr -= vdev->addr + VIRTIO_PCI_CONFIG; |
|
| 538 | 413 |
if (addr > (vdev->config_len - sizeof(val))) |
| 539 | 414 |
return (uint32_t)-1; |
| 540 | 415 |
|
| ... | ... | |
| 542 | 417 |
return val; |
| 543 | 418 |
} |
| 544 | 419 |
|
| 545 |
static uint32_t virtio_config_readw(void *opaque, uint32_t addr)
|
|
| 420 |
uint32_t virtio_config_readw(VirtIODevice *vdev, uint32_t addr)
|
|
| 546 | 421 |
{
|
| 547 |
VirtIODevice *vdev = opaque; |
|
| 548 | 422 |
uint16_t val; |
| 549 | 423 |
|
| 550 | 424 |
vdev->get_config(vdev, vdev->config); |
| 551 | 425 |
|
| 552 |
addr -= vdev->addr + VIRTIO_PCI_CONFIG; |
|
| 553 | 426 |
if (addr > (vdev->config_len - sizeof(val))) |
| 554 | 427 |
return (uint32_t)-1; |
| 555 | 428 |
|
| ... | ... | |
| 557 | 430 |
return val; |
| 558 | 431 |
} |
| 559 | 432 |
|
| 560 |
static uint32_t virtio_config_readl(void *opaque, uint32_t addr)
|
|
| 433 |
uint32_t virtio_config_readl(VirtIODevice *vdev, uint32_t addr)
|
|
| 561 | 434 |
{
|
| 562 |
VirtIODevice *vdev = opaque; |
|
| 563 | 435 |
uint32_t val; |
| 564 | 436 |
|
| 565 | 437 |
vdev->get_config(vdev, vdev->config); |
| 566 | 438 |
|
| 567 |
addr -= vdev->addr + VIRTIO_PCI_CONFIG; |
|
| 568 | 439 |
if (addr > (vdev->config_len - sizeof(val))) |
| 569 | 440 |
return (uint32_t)-1; |
| 570 | 441 |
|
| ... | ... | |
| 572 | 443 |
return val; |
| 573 | 444 |
} |
| 574 | 445 |
|
| 575 |
static void virtio_config_writeb(void *opaque, uint32_t addr, uint32_t data)
|
|
| 446 |
void virtio_config_writeb(VirtIODevice *vdev, uint32_t addr, uint32_t data)
|
|
| 576 | 447 |
{
|
| 577 |
VirtIODevice *vdev = opaque; |
|
| 578 | 448 |
uint8_t val = data; |
| 579 | 449 |
|
| 580 |
addr -= vdev->addr + VIRTIO_PCI_CONFIG; |
|
| 581 | 450 |
if (addr > (vdev->config_len - sizeof(val))) |
| 582 | 451 |
return; |
| 583 | 452 |
|
| ... | ... | |
| 587 | 456 |
vdev->set_config(vdev, vdev->config); |
| 588 | 457 |
} |
| 589 | 458 |
|
| 590 |
static void virtio_config_writew(void *opaque, uint32_t addr, uint32_t data)
|
|
| 459 |
void virtio_config_writew(VirtIODevice *vdev, uint32_t addr, uint32_t data)
|
|
| 591 | 460 |
{
|
| 592 |
VirtIODevice *vdev = opaque; |
|
| 593 | 461 |
uint16_t val = data; |
| 594 | 462 |
|
| 595 |
addr -= vdev->addr + VIRTIO_PCI_CONFIG; |
|
| 596 | 463 |
if (addr > (vdev->config_len - sizeof(val))) |
| 597 | 464 |
return; |
| 598 | 465 |
|
| ... | ... | |
| 602 | 469 |
vdev->set_config(vdev, vdev->config); |
| 603 | 470 |
} |
| 604 | 471 |
|
| 605 |
static void virtio_config_writel(void *opaque, uint32_t addr, uint32_t data)
|
|
| 472 |
void virtio_config_writel(VirtIODevice *vdev, uint32_t addr, uint32_t data)
|
|
| 606 | 473 |
{
|
| 607 |
VirtIODevice *vdev = opaque; |
|
| 608 | 474 |
uint32_t val = data; |
| 609 | 475 |
|
| 610 |
addr -= vdev->addr + VIRTIO_PCI_CONFIG; |
|
| 611 | 476 |
if (addr > (vdev->config_len - sizeof(val))) |
| 612 | 477 |
return; |
| 613 | 478 |
|
| ... | ... | |
| 617 | 482 |
vdev->set_config(vdev, vdev->config); |
| 618 | 483 |
} |
| 619 | 484 |
|
| 620 |
static void virtio_map(PCIDevice *pci_dev, int region_num, |
|
| 621 |
uint32_t addr, uint32_t size, int type) |
|
| 485 |
void virtio_queue_set_addr(VirtIODevice *vdev, int n, target_phys_addr_t addr) |
|
| 622 | 486 |
{
|
| 623 |
VirtIODevice *vdev = to_virtio_device(pci_dev); |
|
| 624 |
int i; |
|
| 625 |
|
|
| 626 |
vdev->addr = addr; |
|
| 627 |
for (i = 0; i < 3; i++) {
|
|
| 628 |
register_ioport_write(addr, 20, 1 << i, virtio_ioport_write, vdev); |
|
| 629 |
register_ioport_read(addr, 20, 1 << i, virtio_ioport_read, vdev); |
|
| 487 |
if (addr == 0) {
|
|
| 488 |
virtio_reset(vdev); |
|
| 489 |
} else {
|
|
| 490 |
vdev->vq[n].pa = addr; |
|
| 491 |
virtqueue_init(&vdev->vq[n]); |
|
| 630 | 492 |
} |
| 493 |
} |
|
| 494 |
|
|
| 495 |
target_phys_addr_t virtio_queue_get_addr(VirtIODevice *vdev, int n) |
|
| 496 |
{
|
|
| 497 |
return vdev->vq[n].pa; |
|
| 498 |
} |
|
| 499 |
|
|
| 500 |
int virtio_queue_get_num(VirtIODevice *vdev, int n) |
|
| 501 |
{
|
|
| 502 |
return vdev->vq[n].vring.num; |
|
| 503 |
} |
|
| 631 | 504 |
|
| 632 |
if (vdev->config_len) {
|
|
| 633 |
register_ioport_write(addr + 20, vdev->config_len, 1, |
|
| 634 |
virtio_config_writeb, vdev); |
|
| 635 |
register_ioport_write(addr + 20, vdev->config_len, 2, |
|
| 636 |
virtio_config_writew, vdev); |
|
| 637 |
register_ioport_write(addr + 20, vdev->config_len, 4, |
|
| 638 |
virtio_config_writel, vdev); |
|
| 639 |
register_ioport_read(addr + 20, vdev->config_len, 1, |
|
| 640 |
virtio_config_readb, vdev); |
|
| 641 |
register_ioport_read(addr + 20, vdev->config_len, 2, |
|
| 642 |
virtio_config_readw, vdev); |
|
| 643 |
register_ioport_read(addr + 20, vdev->config_len, 4, |
|
| 644 |
virtio_config_readl, vdev); |
|
| 645 |
|
|
| 646 |
vdev->get_config(vdev, vdev->config); |
|
| 505 |
void virtio_queue_notify(VirtIODevice *vdev, int n) |
|
| 506 |
{
|
|
| 507 |
if (n < VIRTIO_PCI_QUEUE_MAX && vdev->vq[n].vring.desc) {
|
|
| 508 |
vdev->vq[n].handle_output(vdev, &vdev->vq[n]); |
|
| 647 | 509 |
} |
| 648 | 510 |
} |
| 649 | 511 |
|
| ... | ... | |
| 691 | 553 |
{
|
| 692 | 554 |
int i; |
| 693 | 555 |
|
| 694 |
pci_device_save(&vdev->pci_dev, f); |
|
| 556 |
/* FIXME: load/save binding. */ |
|
| 557 |
//pci_device_save(&vdev->pci_dev, f); |
|
| 695 | 558 |
|
| 696 |
qemu_put_be32s(f, &vdev->addr); |
|
| 697 | 559 |
qemu_put_8s(f, &vdev->status); |
| 698 | 560 |
qemu_put_8s(f, &vdev->isr); |
| 699 | 561 |
qemu_put_be16s(f, &vdev->queue_sel); |
| ... | ... | |
| 713 | 575 |
break; |
| 714 | 576 |
|
| 715 | 577 |
qemu_put_be32(f, vdev->vq[i].vring.num); |
| 716 |
qemu_put_be32s(f, &vdev->vq[i].pfn);
|
|
| 578 |
qemu_put_be64(f, vdev->vq[i].pa);
|
|
| 717 | 579 |
qemu_put_be16s(f, &vdev->vq[i].last_avail_idx); |
| 718 | 580 |
} |
| 719 | 581 |
} |
| ... | ... | |
| 722 | 584 |
{
|
| 723 | 585 |
int num, i; |
| 724 | 586 |
|
| 725 |
pci_device_load(&vdev->pci_dev, f); |
|
| 587 |
/* FIXME: load/save binding. */ |
|
| 588 |
//pci_device_load(&vdev->pci_dev, f); |
|
| 726 | 589 |
|
| 727 |
qemu_get_be32s(f, &vdev->addr); |
|
| 728 | 590 |
qemu_get_8s(f, &vdev->status); |
| 729 | 591 |
qemu_get_8s(f, &vdev->isr); |
| 730 | 592 |
qemu_get_be16s(f, &vdev->queue_sel); |
| ... | ... | |
| 736 | 598 |
|
| 737 | 599 |
for (i = 0; i < num; i++) {
|
| 738 | 600 |
vdev->vq[i].vring.num = qemu_get_be32(f); |
| 739 |
qemu_get_be32s(f, &vdev->vq[i].pfn);
|
|
| 601 |
vdev->vq[i].pa = qemu_get_be64(f);
|
|
| 740 | 602 |
qemu_get_be16s(f, &vdev->vq[i].last_avail_idx); |
| 741 | 603 |
|
| 742 |
if (vdev->vq[i].pfn) {
|
|
| 743 |
target_phys_addr_t pa; |
|
| 744 |
|
|
| 745 |
pa = (ram_addr_t)vdev->vq[i].pfn << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
|
| 746 |
virtqueue_init(&vdev->vq[i], pa); |
|
| 604 |
if (vdev->vq[i].pa) {
|
|
| 605 |
virtqueue_init(&vdev->vq[i]); |
|
| 747 | 606 |
} |
| 748 | 607 |
} |
| 749 | 608 |
|
| ... | ... | |
| 757 | 616 |
qemu_free(vdev->vq); |
| 758 | 617 |
} |
| 759 | 618 |
|
| 760 |
VirtIODevice *virtio_init_pci(PCIDevice *pci_dev, const char *name, |
|
| 761 |
uint16_t vendor, uint16_t device, |
|
| 762 |
uint16_t subvendor, uint16_t subdevice, |
|
| 763 |
uint16_t class_code, uint8_t pif, |
|
| 764 |
size_t config_size) |
|
| 619 |
VirtIODevice *virtio_common_init(const char *name, uint16_t device_id, |
|
| 620 |
size_t config_size, size_t struct_size) |
|
| 765 | 621 |
{
|
| 766 | 622 |
VirtIODevice *vdev; |
| 767 |
uint8_t *config; |
|
| 768 |
uint32_t size; |
|
| 769 | 623 |
|
| 770 |
vdev = to_virtio_device(pci_dev);
|
|
| 624 |
vdev = qemu_mallocz(struct_size);
|
|
| 771 | 625 |
|
| 626 |
vdev->device_id = device_id; |
|
| 772 | 627 |
vdev->status = 0; |
| 773 | 628 |
vdev->isr = 0; |
| 774 | 629 |
vdev->queue_sel = 0; |
| 775 | 630 |
vdev->vq = qemu_mallocz(sizeof(VirtQueue) * VIRTIO_PCI_QUEUE_MAX); |
| 776 | 631 |
|
| 777 |
config = pci_dev->config; |
|
| 778 |
pci_config_set_vendor_id(config, vendor); |
|
| 779 |
pci_config_set_device_id(config, device); |
|
| 780 |
|
|
| 781 |
config[0x08] = VIRTIO_PCI_ABI_VERSION; |
|
| 782 |
|
|
| 783 |
config[0x09] = pif; |
|
| 784 |
pci_config_set_class(config, class_code); |
|
| 785 |
config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; |
|
| 786 |
|
|
| 787 |
config[0x2c] = subvendor & 0xFF; |
|
| 788 |
config[0x2d] = (subvendor >> 8) & 0xFF; |
|
| 789 |
config[0x2e] = subdevice & 0xFF; |
|
| 790 |
config[0x2f] = (subdevice >> 8) & 0xFF; |
|
| 791 |
|
|
| 792 |
config[0x3d] = 1; |
|
| 793 |
|
|
| 794 | 632 |
vdev->name = name; |
| 795 | 633 |
vdev->config_len = config_size; |
| 796 | 634 |
if (vdev->config_len) |
| ... | ... | |
| 798 | 636 |
else |
| 799 | 637 |
vdev->config = NULL; |
| 800 | 638 |
|
| 801 |
size = 20 + config_size; |
|
| 802 |
if (size & (size-1)) |
|
| 803 |
size = 1 << qemu_fls(size); |
|
| 804 |
|
|
| 805 |
pci_register_io_region(pci_dev, 0, size, PCI_ADDRESS_SPACE_IO, |
|
| 806 |
virtio_map); |
|
| 807 | 639 |
qemu_register_reset(virtio_reset, vdev); |
| 808 |
|
|
| 809 | 640 |
return vdev; |
| 810 | 641 |
} |
| 642 |
|
|
| 643 |
void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding, |
|
| 644 |
void *opaque) |
|
| 645 |
{
|
|
| 646 |
vdev->binding = binding; |
|
| 647 |
vdev->binding_opaque = opaque; |
|
| 648 |
} |
|
| b/hw/virtio.h | ||
|---|---|---|
| 15 | 15 |
#define _QEMU_VIRTIO_H |
| 16 | 16 |
|
| 17 | 17 |
#include "hw.h" |
| 18 |
#include "pci.h"
|
|
| 18 |
#include "qdev.h"
|
|
| 19 | 19 |
|
| 20 | 20 |
/* from Linux's linux/virtio_config.h */ |
| 21 | 21 |
|
| ... | ... | |
| 70 | 70 |
struct iovec out_sg[VIRTQUEUE_MAX_SIZE]; |
| 71 | 71 |
} VirtQueueElement; |
| 72 | 72 |
|
| 73 |
typedef struct {
|
|
| 74 |
void (*update_irq)(void * opaque); |
|
| 75 |
} VirtIOBindings; |
|
| 76 |
|
|
| 73 | 77 |
#define VIRTIO_PCI_QUEUE_MAX 16 |
| 74 | 78 |
|
| 75 | 79 |
struct VirtIODevice |
| 76 | 80 |
{
|
| 77 |
PCIDevice pci_dev; |
|
| 78 | 81 |
const char *name; |
| 79 |
uint32_t addr; |
|
| 80 | 82 |
uint8_t status; |
| 81 | 83 |
uint8_t isr; |
| 82 | 84 |
uint16_t queue_sel; |
| ... | ... | |
| 90 | 92 |
void (*set_config)(VirtIODevice *vdev, const uint8_t *config); |
| 91 | 93 |
void (*reset)(VirtIODevice *vdev); |
| 92 | 94 |
VirtQueue *vq; |
| 95 |
const VirtIOBindings *binding; |
|
| 96 |
void *binding_opaque; |
|
| 97 |
uint16_t device_id; |
|
| 93 | 98 |
}; |
| 94 | 99 |
|
| 95 |
VirtIODevice *virtio_init_pci(PCIDevice *pci_dev, const char *name, |
|
| 96 |
uint16_t vendor, uint16_t device, |
|
| 97 |
uint16_t subvendor, uint16_t subdevice, |
|
| 98 |
uint16_t class_code, uint8_t pif, |
|
| 99 |
size_t config_size); |
|
| 100 |
|
|
| 101 | 100 |
VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, |
| 102 | 101 |
void (*handle_output)(VirtIODevice *, |
| 103 | 102 |
VirtQueue *)); |
| ... | ... | |
| 127 | 126 |
|
| 128 | 127 |
int virtio_queue_empty(VirtQueue *vq); |
| 129 | 128 |
|
| 129 |
/* Host binding interface. */ |
|
| 130 |
|
|
| 131 |
VirtIODevice *virtio_common_init(const char *name, uint16_t device_id, |
|
| 132 |
size_t config_size, size_t struct_size); |
|
| 133 |
uint32_t virtio_config_readb(VirtIODevice *vdev, uint32_t addr); |
|
| 134 |
uint32_t virtio_config_readw(VirtIODevice *vdev, uint32_t addr); |
|
| 135 |
uint32_t virtio_config_readl(VirtIODevice *vdev, uint32_t addr); |
|
| 136 |
void virtio_config_writeb(VirtIODevice *vdev, uint32_t addr, uint32_t data); |
|
| 137 |
void virtio_config_writew(VirtIODevice *vdev, uint32_t addr, uint32_t data); |
|
| 138 |
void virtio_config_writel(VirtIODevice *vdev, uint32_t addr, uint32_t data); |
|
| 139 |
void virtio_queue_set_addr(VirtIODevice *vdev, int n, target_phys_addr_t addr); |
|
| 140 |
target_phys_addr_t virtio_queue_get_addr(VirtIODevice *vdev, int n); |
|
| 141 |
int virtio_queue_get_num(VirtIODevice *vdev, int n); |
|
| 142 |
void virtio_queue_notify(VirtIODevice *vdev, int n); |
|
| 143 |
void virtio_reset(void *opaque); |
|
| 144 |
void virtio_update_irq(VirtIODevice *vdev); |
|
| 145 |
|
|
| 146 |
void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding, |
|
| 147 |
void *opaque); |
|
| 148 |
|
|
| 149 |
/* Base devices. */ |
|
| 150 |
VirtIODevice *virtio_blk_init(DeviceState *dev); |
|
| 151 |
VirtIODevice *virtio_net_init(DeviceState *dev); |
|
| 152 |
VirtIODevice *virtio_console_init(DeviceState *dev); |
|
| 153 |
VirtIODevice *virtio_balloon_init(DeviceState *dev); |
|
| 154 |
|
|
| 130 | 155 |
#endif |
Also available in: Unified diff