[PATCH v6 09/30] PCI: Include fixed and immovable BARs into the bus size calculating
From: Sergey Miroshnichenko <hidden>
Date: 2019-10-24 17:36:09
Also in:
linux-pci
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
The only difference between the fixed/immovable and movable BARs is a size and offset preservation after they are released (the corresponding struct resource* detached from a bridge window for a while during a bus rescan). Include fixed/immovable BARs into result of pbus_size_mem() and prohibit assigning them to non-direct parents. Signed-off-by: Sergey Miroshnichenko <redacted> --- drivers/pci/setup-bus.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 4b538d132958..ff33b47b1bb7 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c@@ -1011,12 +1011,20 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, struct resource *r = &dev->resource[i]; resource_size_t r_size; - if (r->parent || (r->flags & IORESOURCE_PCI_FIXED) || + if (r->parent || ((r->flags & mask) != type && (r->flags & mask) != type2 && (r->flags & mask) != type3)) continue; r_size = resource_size(r); + + if (!pci_dev_bar_movable(dev, r)) { + if (pci_can_move_bars) + size += r_size; + + continue; + } + #ifdef CONFIG_PCI_IOV /* Put SRIOV requested res to the optional list */ if (realloc_head && i >= PCI_IOV_RESOURCES &&
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2.23.0