mirror of https://gitee.com/openkylin/qemu.git
hw/vfio/pci: split vfio_get_device
vfio_get_device now takes a VFIODevice as argument. The function is split into 2 parts: vfio_get_device which is generic and vfio_populate_device which is bus specific. 3 new fields are introduced in VFIODevice to store dev_info. vfio_put_base_device is created. Signed-off-by: Eric Auger <eric.auger@linaro.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Eric Auger
Alex Williamson
parent
a664477db8
commit
d13dd2d7a9
130
hw/vfio/pci.c
130
hw/vfio/pci.c
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@ -204,12 +204,16 @@ typedef struct VFIODevice {
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bool reset_works;
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bool needs_reset;
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VFIODeviceOps *ops;
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unsigned int num_irqs;
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unsigned int num_regions;
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unsigned int flags;
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} VFIODevice;
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struct VFIODeviceOps {
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void (*vfio_compute_needs_reset)(VFIODevice *vdev);
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int (*vfio_hot_reset_multi)(VFIODevice *vdev);
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void (*vfio_eoi)(VFIODevice *vdev);
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int (*vfio_populate_device)(VFIODevice *vdev);
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};
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typedef struct VFIOPCIDevice {
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@ -296,6 +300,8 @@ static uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32_t addr, int len);
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static void vfio_pci_write_config(PCIDevice *pdev, uint32_t addr,
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uint32_t val, int len);
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static void vfio_mmap_set_enabled(VFIOPCIDevice *vdev, bool enabled);
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static void vfio_put_base_device(VFIODevice *vbasedev);
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static int vfio_populate_device(VFIODevice *vbasedev);
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/*
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* Common VFIO interrupt disable
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@ -3610,6 +3616,7 @@ static VFIODeviceOps vfio_pci_ops = {
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.vfio_compute_needs_reset = vfio_pci_compute_needs_reset,
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.vfio_hot_reset_multi = vfio_pci_hot_reset_multi,
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.vfio_eoi = vfio_eoi,
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.vfio_populate_device = vfio_populate_device,
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};
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static void vfio_reset_handler(void *opaque)
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@ -3951,70 +3958,45 @@ static void vfio_put_group(VFIOGroup *group)
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}
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}
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static int vfio_get_device(VFIOGroup *group, const char *name,
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VFIOPCIDevice *vdev)
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static int vfio_populate_device(VFIODevice *vbasedev)
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{
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struct vfio_device_info dev_info = { .argsz = sizeof(dev_info) };
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VFIOPCIDevice *vdev = container_of(vbasedev, VFIOPCIDevice, vbasedev);
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struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
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struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) };
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int ret, i;
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ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, name);
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if (ret < 0) {
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error_report("vfio: error getting device %s from group %d: %m",
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name, group->groupid);
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error_printf("Verify all devices in group %d are bound to vfio-pci "
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"or pci-stub and not already in use\n", group->groupid);
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return ret;
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}
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vdev->vbasedev.fd = ret;
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vdev->vbasedev.group = group;
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QLIST_INSERT_HEAD(&group->device_list, &vdev->vbasedev, next);
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int i, ret = -1;
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/* Sanity check device */
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ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_INFO, &dev_info);
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if (ret) {
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error_report("vfio: error getting device info: %m");
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goto error;
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}
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trace_vfio_get_device_irq(name, dev_info.flags,
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dev_info.num_regions, dev_info.num_irqs);
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if (!(dev_info.flags & VFIO_DEVICE_FLAGS_PCI)) {
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if (!(vbasedev->flags & VFIO_DEVICE_FLAGS_PCI)) {
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error_report("vfio: Um, this isn't a PCI device");
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goto error;
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}
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vdev->vbasedev.reset_works = !!(dev_info.flags & VFIO_DEVICE_FLAGS_RESET);
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if (dev_info.num_regions < VFIO_PCI_CONFIG_REGION_INDEX + 1) {
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if (vbasedev->num_regions < VFIO_PCI_CONFIG_REGION_INDEX + 1) {
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error_report("vfio: unexpected number of io regions %u",
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dev_info.num_regions);
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vbasedev->num_regions);
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goto error;
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}
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if (dev_info.num_irqs < VFIO_PCI_MSIX_IRQ_INDEX + 1) {
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error_report("vfio: unexpected number of irqs %u", dev_info.num_irqs);
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if (vbasedev->num_irqs < VFIO_PCI_MSIX_IRQ_INDEX + 1) {
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error_report("vfio: unexpected number of irqs %u", vbasedev->num_irqs);
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goto error;
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}
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for (i = VFIO_PCI_BAR0_REGION_INDEX; i < VFIO_PCI_ROM_REGION_INDEX; i++) {
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reg_info.index = i;
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ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
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ret = ioctl(vbasedev->fd, VFIO_DEVICE_GET_REGION_INFO, ®_info);
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if (ret) {
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error_report("vfio: Error getting region %d info: %m", i);
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goto error;
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}
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trace_vfio_get_device_region(name, i,
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(unsigned long)reg_info.size,
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(unsigned long)reg_info.offset,
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(unsigned long)reg_info.flags);
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trace_vfio_populate_device_region(vbasedev->name, i,
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(unsigned long)reg_info.size,
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(unsigned long)reg_info.offset,
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(unsigned long)reg_info.flags);
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vdev->bars[i].region.vbasedev = &vdev->vbasedev;
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vdev->bars[i].region.vbasedev = vbasedev;
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vdev->bars[i].region.flags = reg_info.flags;
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vdev->bars[i].region.size = reg_info.size;
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vdev->bars[i].region.fd_offset = reg_info.offset;
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@ -4030,9 +4012,10 @@ static int vfio_get_device(VFIOGroup *group, const char *name,
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goto error;
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}
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trace_vfio_get_device_config(name, (unsigned long)reg_info.size,
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(unsigned long)reg_info.offset,
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(unsigned long)reg_info.flags);
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trace_vfio_populate_device_config(vdev->vbasedev.name,
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(unsigned long)reg_info.size,
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(unsigned long)reg_info.offset,
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(unsigned long)reg_info.flags);
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vdev->config_size = reg_info.size;
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if (vdev->config_size == PCI_CONFIG_SPACE_SIZE) {
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@ -4041,7 +4024,7 @@ static int vfio_get_device(VFIOGroup *group, const char *name,
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vdev->config_offset = reg_info.offset;
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if ((vdev->features & VFIO_FEATURE_ENABLE_VGA) &&
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dev_info.num_regions > VFIO_PCI_VGA_REGION_INDEX) {
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vbasedev->num_regions > VFIO_PCI_VGA_REGION_INDEX) {
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struct vfio_region_info vga_info = {
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.argsz = sizeof(vga_info),
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.index = VFIO_PCI_VGA_REGION_INDEX,
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@ -4085,7 +4068,7 @@ static int vfio_get_device(VFIOGroup *group, const char *name,
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ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info);
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if (ret) {
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/* This can fail for an old kernel or legacy PCI dev */
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trace_vfio_get_device_get_irq_info_failure();
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trace_vfio_populate_device_get_irq_info_failure();
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ret = 0;
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} else if (irq_info.count == 1) {
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vdev->pci_aer = true;
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@ -4097,25 +4080,68 @@ static int vfio_get_device(VFIOGroup *group, const char *name,
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}
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error:
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return ret;
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}
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static int vfio_get_device(VFIOGroup *group, const char *name,
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VFIODevice *vbasedev)
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{
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struct vfio_device_info dev_info = { .argsz = sizeof(dev_info) };
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int ret;
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ret = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, name);
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if (ret < 0) {
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error_report("vfio: error getting device %s from group %d: %m",
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name, group->groupid);
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error_printf("Verify all devices in group %d are bound to vfio-<bus> "
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"or pci-stub and not already in use\n", group->groupid);
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return ret;
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}
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vbasedev->fd = ret;
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vbasedev->group = group;
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QLIST_INSERT_HEAD(&group->device_list, vbasedev, next);
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ret = ioctl(vbasedev->fd, VFIO_DEVICE_GET_INFO, &dev_info);
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if (ret) {
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QLIST_REMOVE(&vdev->vbasedev, next);
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vdev->vbasedev.group = NULL;
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close(vdev->vbasedev.fd);
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error_report("vfio: error getting device info: %m");
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goto error;
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}
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vbasedev->num_irqs = dev_info.num_irqs;
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vbasedev->num_regions = dev_info.num_regions;
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vbasedev->flags = dev_info.flags;
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trace_vfio_get_device(name, dev_info.flags,
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dev_info.num_regions, dev_info.num_irqs);
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vbasedev->reset_works = !!(dev_info.flags & VFIO_DEVICE_FLAGS_RESET);
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ret = vbasedev->ops->vfio_populate_device(vbasedev);
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error:
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if (ret) {
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vfio_put_base_device(vbasedev);
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}
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return ret;
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}
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void vfio_put_base_device(VFIODevice *vbasedev)
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{
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QLIST_REMOVE(vbasedev, next);
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vbasedev->group = NULL;
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trace_vfio_put_base_device(vbasedev->fd);
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close(vbasedev->fd);
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}
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static void vfio_put_device(VFIOPCIDevice *vdev)
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{
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QLIST_REMOVE(&vdev->vbasedev, next);
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vdev->vbasedev.group = NULL;
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trace_vfio_put_device(vdev->vbasedev.fd);
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close(vdev->vbasedev.fd);
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g_free(vdev->vbasedev.name);
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if (vdev->msix) {
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g_free(vdev->msix);
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vdev->msix = NULL;
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}
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vfio_put_base_device(&vdev->vbasedev);
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}
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static void vfio_err_notifier_handler(void *opaque)
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@ -4288,7 +4314,7 @@ static int vfio_initfn(PCIDevice *pdev)
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}
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}
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ret = vfio_get_device(group, path, vdev);
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ret = vfio_get_device(group, path, &vdev->vbasedev);
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if (ret) {
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error_report("vfio: failed to get device %s", path);
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vfio_put_group(group);
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10
trace-events
10
trace-events
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@ -1403,10 +1403,10 @@ vfio_pci_hot_reset(int domain, int bus, int slot, int fn, const char *type) " (%
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vfio_pci_hot_reset_has_dep_devices(int domain, int bus, int slot, int fn) "%04x:%02x:%02x.%x: hot reset dependent devices:"
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vfio_pci_hot_reset_dep_devices(int domain, int bus, int slot, int function, int group_id) "\t%04x:%02x:%02x.%x group %d"
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vfio_pci_hot_reset_result(int domain, int bus, int slot, int fn, const char *result) "%04x:%02x:%02x.%x hot reset: %s"
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vfio_get_device_region(const char *region_name, int index, unsigned long size, unsigned long offset, unsigned long flags) "Device %s region %d:\n size: 0x%lx, offset: 0x%lx, flags: 0x%lx"
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vfio_get_device_config(const char *name, unsigned long size, unsigned long offset, unsigned long flags) "Device %s config:\n size: 0x%lx, offset: 0x%lx, flags: 0x%lx"
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vfio_get_device_get_irq_info_failure(void) "VFIO_DEVICE_GET_IRQ_INFO failure: %m"
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vfio_get_device_irq(const char *name, unsigned flags, unsigned num_regions, unsigned num_irqs) "Device %s flags: %u, regions: %u, irgs: %u"
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vfio_populate_device_region(const char *region_name, int index, unsigned long size, unsigned long offset, unsigned long flags) "Device %s region %d:\n size: 0x%lx, offset: 0x%lx, flags: 0x%lx"
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vfio_populate_device_config(const char *name, unsigned long size, unsigned long offset, unsigned long flags) "Device %s config:\n size: 0x%lx, offset: 0x%lx, flags: 0x%lx"
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vfio_populate_device_get_irq_info_failure(void) "VFIO_DEVICE_GET_IRQ_INFO failure: %m"
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vfio_get_device(const char *name, unsigned flags, unsigned num_regions, unsigned num_irqs) "Device %s flags: %u, regions: %u, irgs: %u"
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vfio_initfn(int domain, int bus, int slot, int fn, int group_id) " (%04x:%02x:%02x.%x) group %d"
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vfio_pci_reset(int domain, int bus, int slot, int fn) " (%04x:%02x:%02x.%x)"
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vfio_pci_reset_flr(int domain, int bus, int slot, int fn) "%04x:%02x:%02x.%x FLR/VFIO_DEVICE_RESET"
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@ -1422,7 +1422,7 @@ vfio_listener_region_del_skip(uint64_t start, uint64_t end) "SKIPPING region_del
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vfio_listener_region_del(uint64_t start, uint64_t end) "region_del %"PRIx64" - %"PRIx64
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vfio_disconnect_container(int fd) "close container->fd=%d"
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vfio_put_group(int fd) "close group->fd=%d"
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vfio_put_device(int fd) "close vdev->fd=%d"
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vfio_put_base_device(int fd) "close vdev->fd=%d"
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#hw/acpi/memory_hotplug.c
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mhp_acpi_invalid_slot_selected(uint32_t slot) "0x%"PRIx32
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