[PATCH 6/9] kvm tools: Use dynamic IO port allocation in 9p driver

[Sasha Levin]

Signed-off-by: Sasha Levin <levinsasha...@gmail.com>
---
 tools/kvm/virtio/9p.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/tools/kvm/virtio/9p.c b/tools/kvm/virtio/9p.c
index e307592..f8cb96d 100644
--- a/tools/kvm/virtio/9p.c
+++ b/tools/kvm/virtio/9p.c
@@ -50,7 +50,6 @@ static struct pci_device_header virtio_p9_pci_device = {
        .class                  = 0x010000,
        .subsys_vendor_id       = PCI_SUBSYSTEM_VENDOR_ID_REDHAT_QUMRANET,
        .subsys_id              = VIRTIO_ID_9P,
-       .bar[0]                 = IOPORT_VIRTIO_P9 | PCI_BASE_ADDRESS_SPACE_IO,
 };
 
 struct p9_dev {
@@ -59,6 +58,7 @@ struct p9_dev {
        u16                     config_vector;
        u32                     features;
        struct virtio_9p_config *config;
+       u16                     base_addr;
 
        /* virtio queue */
        u16                     queue_selector;
@@ -96,7 +96,7 @@ static bool virtio_p9_pci_io_in(struct kvm *kvm, u16 port, 
void *data, int size,
        unsigned long offset;
        bool ret = true;
 
-       offset = port - IOPORT_VIRTIO_P9;
+       offset = port - p9dev.base_addr;
 
        switch (offset) {
        case VIRTIO_PCI_HOST_FEATURES:
@@ -584,7 +584,7 @@ static bool virtio_p9_pci_io_out(struct kvm *kvm, u16 port, 
void *data, int size
        unsigned long offset;
        bool ret = true;
 
-       offset          = port - IOPORT_VIRTIO_P9;
+       offset = port - p9dev.base_addr;
 
        switch (offset) {
        case VIRTIO_MSI_QUEUE_VECTOR:
@@ -636,6 +636,7 @@ void virtio_9p__init(struct kvm *kvm, const char *root)
 {
        u8 pin, line, dev;
        u32 i, root_len;
+       u16 p9_base_addr;
 
        p9dev.config = calloc(1, sizeof(*p9dev.config) + sizeof(VIRTIO_P9_TAG));
        if (p9dev.config == NULL)
@@ -662,7 +663,10 @@ void virtio_9p__init(struct kvm *kvm, const char *root)
 
        virtio_p9_pci_device.irq_pin    = pin;
        virtio_p9_pci_device.irq_line   = line;
+       p9_base_addr                    = ioport__find_free_range();
+       virtio_p9_pci_device.bar[0]     = p9_base_addr | 
PCI_BASE_ADDRESS_SPACE_IO;
+       p9dev.base_addr                 = p9_base_addr;
        pci__register(&virtio_p9_pci_device, dev);
 
-       ioport__register(IOPORT_VIRTIO_P9, &virtio_p9_io_ops, 
IOPORT_VIRTIO_P9_SIZE);
+       ioport__register(p9_base_addr, &virtio_p9_io_ops, IOPORT_SIZE);
 }
-- 
1.7.5.rc3

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