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x86/PCI: VMD: Attach VMD resources to parent domain's resource tree

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Attach the new VMD domain's resources to the VMD device's resources.  This
allows /proc/iomem to display a more complete picture.

Before:
  c0000000-c1ffffff : 0000:5d:05.5
  c2000000-c3ffffff : 0000:5d:05.5
    c2010000-c2013fff : nvme
  c4000000-c40fffff : 0000:5d:05.5

After:
  c0000000-c1ffffff : 0000:5d:05.5
  c2000000-c3ffffff : 0000:5d:05.5
    c2000000-c3ffffff : VMD MEMBAR1
      c2000000-c22fffff : PCI Bus 10000:01
        c2000000-c200ffff : 10000:01:00.0
        c2010000-c2013fff : 10000:01:00.0
          c2010000-c2013fff : nvme
      c2300000-c24fffff : PCI Bus 10000:01
  c4000000-c40fffff : 0000:5d:05.5
    c4002000-c40fffff : VMD MEMBAR2

Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
This commit is contained in:
Jon Derrick 2016-02-24 10:06:37 -07:00 • committed by Bjorn Helgaas
parent d068c350c0
commit 2c2c5c5cd2
1 changed files with 16 additions and 0 deletions
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16
arch/x86/pci/vmd.c
View file

@ -503,6 +503,18 @@ static struct pci_ops vmd_ops = {
.write = vmd_pci_write, .write = vmd_pci_write,
}; };
static void vmd_attach_resources(struct vmd_dev *vmd)
{
vmd->dev->resource[VMD_MEMBAR1].child = &vmd->resources[1];
vmd->dev->resource[VMD_MEMBAR2].child = &vmd->resources[2];
}
static void vmd_detach_resources(struct vmd_dev *vmd)
{
vmd->dev->resource[VMD_MEMBAR1].child = NULL;
vmd->dev->resource[VMD_MEMBAR2].child = NULL;
}
/* /*
* VMD domains start at 0x1000 to not clash with ACPI _SEG domains. * VMD domains start at 0x1000 to not clash with ACPI _SEG domains.
*/ */
@ -559,6 +571,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd)
.start = res->start, .start = res->start,
.end = res->end, .end = res->end,
.flags = flags, .flags = flags,
.parent = res,
}; };
res = &vmd->dev->resource[VMD_MEMBAR2]; res = &vmd->dev->resource[VMD_MEMBAR2];
@ -571,6 +584,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd)
.start = res->start + 0x2000, .start = res->start + 0x2000,
.end = res->end, .end = res->end,
.flags = flags, .flags = flags,
.parent = res,
}; };
sd->domain = vmd_find_free_domain(); sd->domain = vmd_find_free_domain();
@ -595,6 +609,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd)
return -ENODEV; return -ENODEV;
} }
vmd_attach_resources(vmd);
vmd_setup_dma_ops(vmd); vmd_setup_dma_ops(vmd);
dev_set_msi_domain(&vmd->bus->dev, vmd->irq_domain); dev_set_msi_domain(&vmd->bus->dev, vmd->irq_domain);
pci_rescan_bus(vmd->bus); pci_rescan_bus(vmd->bus);
@ -691,6 +706,7 @@ static void vmd_remove(struct pci_dev *dev)
{ {
struct vmd_dev *vmd = pci_get_drvdata(dev); struct vmd_dev *vmd = pci_get_drvdata(dev);
vmd_detach_resources(vmd);
pci_set_drvdata(dev, NULL); pci_set_drvdata(dev, NULL);
sysfs_remove_link(&vmd->dev->dev.kobj, "domain"); sysfs_remove_link(&vmd->dev->dev.kobj, "domain");
pci_stop_root_bus(vmd->bus); pci_stop_root_bus(vmd->bus);