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Diffstat (limited to 'hw/virtio-pci.c')
-rw-r--r--hw/virtio-pci.c70
1 files changed, 26 insertions, 44 deletions
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index f3b3293db0..86c3229b56 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -162,7 +162,8 @@ static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy,
{
VirtQueue *vq = virtio_get_queue(proxy->vdev, n);
EventNotifier *notifier = virtio_queue_get_host_notifier(vq);
- int r;
+ int r = 0;
+
if (assign) {
r = event_notifier_init(notifier, 1);
if (r < 0) {
@@ -170,24 +171,11 @@ static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy,
__func__, r);
return r;
}
- r = kvm_set_ioeventfd_pio_word(event_notifier_get_fd(notifier),
- proxy->addr + VIRTIO_PCI_QUEUE_NOTIFY,
- n, assign);
- if (r < 0) {
- error_report("%s: unable to map ioeventfd: %d",
- __func__, r);
- event_notifier_cleanup(notifier);
- }
+ memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
+ true, n, event_notifier_get_fd(notifier));
} else {
- r = kvm_set_ioeventfd_pio_word(event_notifier_get_fd(notifier),
- proxy->addr + VIRTIO_PCI_QUEUE_NOTIFY,
- n, assign);
- if (r < 0) {
- error_report("%s: unable to unmap ioeventfd: %d",
- __func__, r);
- return r;
- }
-
+ memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
+ true, n, event_notifier_get_fd(notifier));
/* Handle the race condition where the guest kicked and we deassigned
* before we got around to handling the kick.
*/
@@ -424,7 +412,6 @@ static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr)
{
VirtIOPCIProxy *proxy = opaque;
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- addr -= proxy->addr;
if (addr < config)
return virtio_ioport_read(proxy, addr);
addr -= config;
@@ -435,7 +422,6 @@ static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr)
{
VirtIOPCIProxy *proxy = opaque;
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- addr -= proxy->addr;
if (addr < config)
return virtio_ioport_read(proxy, addr);
addr -= config;
@@ -446,7 +432,6 @@ static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr)
{
VirtIOPCIProxy *proxy = opaque;
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- addr -= proxy->addr;
if (addr < config)
return virtio_ioport_read(proxy, addr);
addr -= config;
@@ -457,7 +442,6 @@ static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val)
{
VirtIOPCIProxy *proxy = opaque;
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- addr -= proxy->addr;
if (addr < config) {
virtio_ioport_write(proxy, addr, val);
return;
@@ -470,7 +454,6 @@ static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val)
{
VirtIOPCIProxy *proxy = opaque;
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- addr -= proxy->addr;
if (addr < config) {
virtio_ioport_write(proxy, addr, val);
return;
@@ -483,7 +466,6 @@ static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val)
{
VirtIOPCIProxy *proxy = opaque;
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
- addr -= proxy->addr;
if (addr < config) {
virtio_ioport_write(proxy, addr, val);
return;
@@ -492,25 +474,20 @@ static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val)
virtio_config_writel(proxy->vdev, addr, val);
}
-static void virtio_map(PCIDevice *pci_dev, int region_num,
- pcibus_t addr, pcibus_t size, int type)
-{
- VirtIOPCIProxy *proxy = container_of(pci_dev, VirtIOPCIProxy, pci_dev);
- VirtIODevice *vdev = proxy->vdev;
- unsigned config_len = VIRTIO_PCI_REGION_SIZE(pci_dev) + vdev->config_len;
-
- proxy->addr = addr;
-
- 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);
+const MemoryRegionPortio virtio_portio[] = {
+ { 0, 0x10000, 1, .write = virtio_pci_config_writeb, },
+ { 0, 0x10000, 2, .write = virtio_pci_config_writew, },
+ { 0, 0x10000, 4, .write = virtio_pci_config_writel, },
+ { 0, 0x10000, 1, .read = virtio_pci_config_readb, },
+ { 0, 0x10000, 2, .read = virtio_pci_config_readw, },
+ { 0, 0x10000, 4, .read = virtio_pci_config_readl, },
+ PORTIO_END_OF_LIST()
+};
- if (vdev->config_len)
- vdev->get_config(vdev, vdev->config);
-}
+static const MemoryRegionOps virtio_pci_config_ops = {
+ .old_portio = virtio_portio,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+};
static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
uint32_t val, int len)
@@ -678,8 +655,10 @@ void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev)
if (size & (size-1))
size = 1 << qemu_fls(size);
- pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO,
- virtio_map);
+ memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy,
+ "virtio-pci", size);
+ pci_register_bar_region(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO,
+ &proxy->bar);
if (!kvm_has_many_ioeventfds()) {
proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
@@ -714,6 +693,9 @@ static int virtio_blk_init_pci(PCIDevice *pci_dev)
static int virtio_exit_pci(PCIDevice *pci_dev)
{
+ VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
+
+ memory_region_destroy(&proxy->bar);
return msix_uninit(pci_dev);
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-16 11:06:03 +0000