From: David Daney <david.daney@xxxxxxxxxx>
SRIOV BARs can be specified via EA entries. Extend the EA parser to
extract the SRIOV BAR resources, and modify sriov_init() to use
resources previously obtained via EA.
Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
---
drivers/pci/iov.c | 11 +++++++++--
drivers/pci/pci.c | 7 +++++++
2 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index ee0ebff..c789e68 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -436,8 +436,15 @@ found:
nres = 0;
for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
res = &dev->resource[i + PCI_IOV_RESOURCES];
- bar64 = __pci_read_base(dev, pci_bar_unknown, res,
- pos + PCI_SRIOV_BAR + i * 4);
+ /*
+ * If it is already FIXED, don't change it, something
+ * (perhaps EA or header fixups) wants it this way.
+ */
+ if (res->flags & IORESOURCE_PCI_FIXED)
+ bar64 = (res->flags & IORESOURCE_MEM_64) ? 1 : 0;
+ else
+ bar64 = __pci_read_base(dev, pci_bar_unknown, res,
+ pos + PCI_SRIOV_BAR + i * 4);
if (!res->flags)
continue;
if (resource_size(res) & (PAGE_SIZE - 1)) {
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 30a90d1..6c41585 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -2176,6 +2176,13 @@ static struct resource *pci_ea_get_resource(struct pci_dev *dev, u8 bei,
{
if (bei <= PCI_EA_BEI_BAR5 && prop <= PCI_EA_P_IO)
return &dev->resource[bei];
+#ifdef CONFIG_PCI_IOV
+ else if (bei >= PCI_EA_BEI_VF_BAR0 && bei <= PCI_EA_BEI_VF_BAR5 &&
+ (prop == PCI_EA_P_VIRT_MEM ||
+ prop == PCI_EA_P_VIRT_MEM_PREFETCH))
+ return &dev->resource[PCI_IOV_RESOURCES +
+ bei - PCI_EA_BEI_VF_BAR0];
+#endif
else if (bei == PCI_EA_BEI_ROM)
return &dev->resource[PCI_ROM_RESOURCE];
else
--
1.9.1
--
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